CN109121210B

Movatterモバイル変換

Info

Publication number: CN109121210B
Application number: CN201710487513.3A
Authority: CN
Inventors: 李俊超; 贾瓦德·阿布多利; 唐臻飞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-06-23
Filing date: 2017-06-23
Publication date: 2021-01-29
Anticipated expiration: 2037-06-23
Also published as: CN109121210A; WO2018233697A1

Abstract

Translated fromChinese

一种检测下行控制信道的方法及设备，用于提供一种确定PDCCH候选总数的方法。该方法包括：移动设备确定激活的带宽部分BP；所述激活的BP属于一个载波；所述移动设备根据激活的BP或激活的BP对应的系统参数确定所述移动设备可检测的下行控制信道候选总数；其中，所述下行控制信道候选总数大于或等于预设阈值；所述移动设备根据所述下行控制信道候选总数检测下行控制信道。

A method and device for detecting a downlink control channel are used to provide a method for determining the total number of PDCCH candidates. The method includes: a mobile device determines an activated bandwidth part BP; the activated BP belongs to a carrier; the mobile device determines a downlink control channel candidate detectable by the mobile device according to the activated BP or a system parameter corresponding to the activated BP The total number of downlink control channel candidates is greater than or equal to a preset threshold; the mobile device detects the downlink control channel according to the total number of downlink control channel candidates.

Description

Method and equipment for detecting downlink control channel

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to a method and equipment for detecting a downlink control channel.

Background

Downlink Control Information (DCI) has multiple formats, but a mobile device does not know in advance which format of DCI is carried by a received Physical Downlink Control Channel (PDCCH), and does not know which PDCCH candidate is used for transmission of the DCI, so the mobile device needs to perform PDCCH blind detection on all PDCCH candidates to receive corresponding DCI.

However, the way of determining the total number of PDCCH candidates in the Long Term Evolution (LTE) system is not suitable for the New Radio (NR) system of the fifth Generation (5th Generation, 5G).

Disclosure of Invention

The application provides a method and equipment for detecting a downlink control channel, which are used for providing a method for detecting the downlink control channel according to the total number of downlink control channel candidates.

In a first aspect, a method for detecting a downlink control channel is provided, which may be performed by a mobile device. The method comprises the following steps: the mobile device determines an activated BP, which belongs to one carrier. The mobile equipment determines the total number of the downlink control channel candidates detectable by the mobile equipment according to the activated BP or the system parameter corresponding to the activated BP, wherein the total number of the downlink control channel candidates is greater than or equal to a preset threshold value. And the mobile equipment detects the downlink control channel according to the total number of the downlink control channel candidates.

It should be understood that the mobile device may determine the total number of downlink control channel candidates of the mobile device according to the activated BP or the system parameter set corresponding to the activated BP, and which BPs are activated, or which system parameter set the activated BP corresponds to, the mobile device may know, that is, the mobile device only needs to determine the total number of downlink control channel candidates according to known information, which is simple in manner and easy to implement, and solves the problem that the mobile device in the 5G NR system cannot determine the total number of downlink control channel candidates, thereby further solving the problem that the mobile device detects the downlink control channel in the 5G NR system.

In one possible design, the determining, by the mobile device, the total number of downlink control channel candidates detectable by the mobile device according to the activated BP or the system parameter corresponding to the activated BP includes: the mobile equipment determines the total number of the downlink control channel candidates of the mobile equipment according to the BP set corresponding to the activated BP; wherein each BP set comprises at least one BP; or, the mobile device determines the total number of the downlink control channel candidates according to the system parameter set to which the system parameter corresponding to the activated BP belongs; wherein each system parameter set comprises at least one system parameter.

The method redefines the number of the downlink control channel candidates of the mobile equipment, and ensures that the number of the downlink control channel candidates of different service types corresponding to different BP sets or different system parameter sets is unchanged as much as possible, so that the PDCCH collision probability cannot be increased.

In one possible design, the determining, by the mobile device, the total number of downlink control channel candidates according to the BP set corresponding to the activated BP includes: when the activated BP corresponds to a BP set, the mobile device determines that the total number of the downlink control channel candidates is M, where M is a preset threshold and is an integer greater than zero; or, when the activated BPs correspond to a plurality of BP sets, the mobile device determines that the total number of downlink control channel candidates of the mobile device is less than or equal to K × M, where M is a preset threshold, K is the number of BP sets, M is an integer greater than zero, and K is an integer greater than zero.

If the activated BP corresponds to a BP set, the BP set may be used for transmitting only one service, and the requirement can be met without additionally increasing the number of downlink control channel candidates; or the BP set corresponds to the transmission of a plurality of services, but the requirement can be met under the condition that the number of downlink control channel candidates is not additionally increased, for example, the collision probability of the downlink control channels is within an acceptable range. So in this case, the total number of downlink control channel candidates detectable by the mobile device is M. The preset threshold may be the total number of PDCCH candidates detectable when the mobile device blindly detects scheduling information of one service transmission.

However, if the activated BP corresponds to a plurality of BP sets, different BP sets are used to transmit different services, and the service types of the services may be different or the service types of the services may be the same, which is not limited in the embodiment of the present invention. Obviously, the number of required downlink control channel candidates also increases. If the requirement of the mobile device may not be met without additionally increasing the number of downlink control channel candidates, it is likely that the number of downlink control channel candidates available for scheduling control information of each service is reduced, thereby increasing the probability of downlink control channel collision. In this case, therefore, the number of downlink control channel candidates may be increased, i.e. the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M and greater than M. By the method, the detectable number of the downlink control channel candidates of the mobile equipment is increased, so that the mobile equipment has enough downlink control channel candidates as much as possible, and the collision probability of the downlink control channel is reduced.

In one possible design, when the activated BPs correspond to the plurality of BP sets, the mobile device determines that a total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M, including: when the activated BPs correspond to a plurality of BP sets and the attribute information of the BP sets corresponding to the activated BPs are the same, the mobile device determines that the total number of downlink control channel candidates is equal to K × M; or, when the activated BPs correspond to a plurality of BP sets and the attribute information of the BP sets corresponding to the activated BPs are different, the mobile device determines that the total number of downlink control channel candidates is less than K × M.

For example, although the activated BPs belong to different BP sets, the attribute information of the different BP sets is the same, and the requirement of the activated BPs on the number of downlink control channel candidates may be almost the same, at this time, the number of more downlink control channel candidates needs to be increased, that is, the total number of downlink control channel candidates is equal to K × M, so as to meet the requirement of the mobile device.

Or, although the activated BPs belong to different BP sets, the attribute information of the different BP sets is different, and the requirements of the activated BPs on the number of downlink control channel candidates may be different, for example, there are more users of BP services or the bit overhead of the scheduling signaling is large, so that the number of required downlink control channel candidates is large, and there are fewer users of BP services or the bit overhead of the scheduling signaling is small, so that the number of required downlink control channel candidates is small. In this case, the requirement can be satisfied without increasing too many downlink control channel candidates, i.e., making the total number of downlink control channel candidates less than K × M. By the method, the requirements of the mobile equipment can be met, and system resources can be saved.

In one possible design, the number of downlink control channel candidates for each BP set corresponding to the activated BP includes at least one of: the detectable downlink control channel candidate quantity corresponding to each BP set corresponding to the activated BP is the same; or, the detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of control resource sets corresponding to each BP set; or, the detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of control channel elements included in the control resource set corresponding to each BP set or the number of resource blocks or resource block groups corresponding to the frequency domain of the control resource set; or, the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the attribute information of each BP set.

For example, if one BP set corresponds to one service, and the service types of the services corresponding to the BP sets are the same, the number of detectable downlink control channel candidates corresponding to each BP set corresponding to an activated BP may be the same. Because the requirement of each service for the candidate number of the downlink control channel may be almost, the fairness of scheduling resource allocation among the services can be ensured by adopting the average allocation principle.

Or, for BP sets corresponding to more control resource sets, where the number of services to be transmitted may be more, and therefore more scheduling resources are needed, the number of detectable downlink control channel candidates corresponding to each BP set corresponding to an activated BP may be determined according to the number of control resource sets corresponding to each BP set. For example, two services in the first BP set need to be transmitted, and only one service in the second BP set needs to be transmitted, the number of downlink control channel candidates corresponding to the first BP set may be greater than the number of downlink control channel candidates corresponding to the second BP set.

Or, the detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined according to the number of CCEs, RBs, RBGs, or REG bundles included in the control resource set corresponding to each BP set. Under the method, the BP set corresponding to more CCEs/RBs/RBGs/REG bundles can better ensure that resource collision does not occur between the downlink control channel candidates, so more downlink control channel candidates can be allocated.

Or, the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined according to the attribute information of each BP set. For example, the attribute information of the BP set includes a service type corresponding to the BP set, and the number of detectable downlink control channel candidates corresponding to the BP set of the URLLC service may be smaller than the number of detectable downlink control channel candidates corresponding to the BP set of the eMBB service. The former has fewer users or the bit overhead of the scheduling signaling is smaller, so the required candidate quantity of the downlink control channel is fewer; the latter has a large number of users or a large bit overhead of scheduling signaling, and thus requires a large number of downlink control channel candidates.

The above several ways of determining the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP may be selected according to actual conditions, and certainly, other ways may also be selected to determine the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP, for example, the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined directly according to the indication information sent by the network device, which is not limited in the embodiment of the present invention.

In one possible design, the determining, by the mobile device, the total number of downlink control channel candidates according to the system parameter set to which the system parameter corresponding to the activated BP belongs includes: when the system parameter corresponding to the activated BP belongs to a system parameter set, the mobile equipment determines that the total number of the downlink control channel candidates is M, wherein M is a preset threshold value, and M is an integer greater than zero; or, when the system parameter corresponding to the activated BP belongs to a plurality of system parameter sets, the mobile device determines that the total number of downlink control channel candidates is less than or equal to K × M, where M is a preset threshold, K is the number of the system parameter sets, M is an integer greater than zero, and K is an integer greater than zero.

If the numerology corresponding to the active BP of the mobile device belongs to a numerology set, then a numerology set may only correspond to the transmission of one service, and the requirement can be satisfied without additionally increasing the number of downlink control channel candidates; or the system parameter set corresponds to the transmission of multiple services, but the requirement can be met under the condition that the number of downlink control channel candidates is not additionally increased, for example, the collision probability of the downlink control channels is within an acceptable range. So in this case, the total number of downlink control channel candidates detectable by the mobile device is M. The preset threshold may be the total number of PDCCH candidates detectable when the mobile device blindly detects scheduling information of one service transmission. Under the condition, the use requirement can be met without additionally increasing the number of the downlink control channel candidates on the basis of the total number of the existing PDCCH candidates of the current mobile equipment, and the PDCCH collision probability cannot be increased, so that the system resource can be saved while the requirement is met, and the expense of blind detection of the control channel by the mobile equipment cannot be increased.

And if the numerology corresponding to the active BP of the mobile device belongs to multiple numerology sets, different numerology sets correspond to the transmission of different services, and the traffic types of these services may be different. Obviously, the number of required downlink control channel candidates also increases. If the requirement of the mobile device may not be met without additionally increasing the number of downlink control channel candidates, it is likely that the number of downlink control channel candidates available for scheduling control information of each service is reduced, thereby increasing the probability of downlink control channel collision. In this case, therefore, the number of downlink control channel candidates may be increased, i.e. the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M and greater than M. By the method, the detectable downlink control channel candidate number of the mobile equipment is increased, so that the mobile equipment has enough downlink control channel candidate number as possible, and the collision probability of the downlink control channel is reduced.

In one possible design, when the system parameter corresponding to the activated BP belongs to a plurality of system parameter sets, the determining, by the mobile device, that the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M includes: when the system parameters corresponding to the activated BPs belong to a plurality of system parameter sets and the attribute information of the system parameter sets to which the system parameters corresponding to the activated BPs belong is the same, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is equal to K × M; or, when the system parameters corresponding to the activated BPs belong to multiple system parameter sets and the attribute information of the system parameter sets to which the system parameters corresponding to the activated BPs belong is different, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is less than K × M.

If the activated BP belongs to different numerology sets but the attribute information of the different numerology sets is the same, the requirement of the activated BP for the number of the downlink control channel candidates may be almost the same, and at this time, the number of the downlink control channel candidates is required to be increased more than necessary, that is, the total number of the downlink control channel candidates is equal to K × M, so as to meet the requirement of the mobile device.

Or, although the activated BPs belong to different numerology sets, but the attribute information of the different numerology sets is different, the requirements of the activated BPs on the number of downlink control channel candidates may be different, for example, there is a larger number of users of the BP service, or the bit overhead of the scheduling signaling is larger, so that the number of required downlink control channel candidates is larger, while there is a smaller number of users of the BP service, or the bit overhead of the scheduling signaling is smaller, so that the number of required downlink control channel candidates is smaller. In this case, the requirement can be satisfied without increasing too many downlink control channel candidates, i.e., making the total number of downlink control channel candidates less than K × M. By the method, the requirements of the mobile equipment can be met, and system resources can be saved.

In one possible design, the number of downlink control channel candidates corresponding to each system parameter set corresponding to the activated BP includes at least one of: the detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is the same; or, the detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the number of control resource sets corresponding to each system parameter set; or, the detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the number of control channel elements included in the control resource set corresponding to each system parameter set or the number of resource blocks or resource block groups corresponding to the control resource set frequency domain corresponding to each system parameter set; or, the detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the attribute information of each system parameter set.

In a second aspect, a mobile device is provided. The mobile device has the function of realizing the mobile device designed by the method. These functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more units corresponding to the above functions.

In one possible design, the specific structure of the mobile device may include a processing unit and a transceiver unit. The processing unit and the transceiver unit may perform the corresponding functions in the method provided in the first aspect or any one of the possible designs of the first aspect.

In a third aspect, a mobile device is provided. The mobile device may be the mobile device designed by the above method, or a functional module such as a chip provided in the mobile device. The mobile device includes: a memory for storing computer executable program code; a transceiver, and a processor coupled to the memory and the transceiver. Wherein the program code stored by the memory comprises instructions which, when executed by the processor, cause the mobile device to perform the method performed by the mobile device of the first aspect or any one of the possible designs of the first aspect.

A fourth aspect provides a computer storage medium storing computer software instructions for a mobile device as described in the second aspect or a mobile device as described in the third aspect and comprising a program designed for a mobile device to perform the first aspect or any one of the possible designs of the first aspect.

In a fifth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the program of the first aspect, or any one of the possible designs of the first aspect, as designed for a mobile device.

The mobile device can determine the total number of the downlink control channel candidates of the mobile device according to the activated BP or the system parameter set corresponding to the activated BP, and the problem that the mobile device in the 5G NR system cannot determine the total number of the downlink control channel candidates is solved, so that the problem that the mobile device in the 5G NR system detects the downlink control channel is further solved.

Drawings

Fig. 1 is a schematic view of an application scenario according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a method for detecting a downlink control channel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a mobile device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another mobile device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another mobile device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present invention are explained to facilitate understanding by those skilled in the art.

1) Mobile devices, including devices that provide voice and/or data connectivity to users, may include, for example, handheld devices having wireless connection capabilities or processing devices connected to wireless modems. The mobile device may communicate with a core Network via a Radio Access Network (RAN), exchanging voice and/or data with the RAN. The Mobile Device may include a User Equipment (UE), a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (AP), a Remote Mobile Device (Remote Terminal), an Access Mobile Device (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), or a User Equipment (User Device), etc. For example, mobile phones (or so-called "cellular" phones), computers with mobile devices, portable, pocket, hand-held, computer-included or vehicle-mounted mobile devices, smart wearable devices, and the like may be included. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), smartwatches, smarthelmets, smartglasses, smartbands, and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Examples of the information sensing device include a barcode, a Radio Frequency Identification (RFID), a sensor, a Global Positioning System (GPS), and a laser scanner.

2) A network device, e.g., including a base station (e.g., access point), can refer to a device in an access network that communicates over the air-interface, through one or more cells, with wireless mobile devices. The base station may be configured to translate received air frames and Internet Protocol (IP) packets to and from each other as a router between the mobile device and the rest of the access network, which may include an IP network. The base station may also coordinate management of attributes for the air interface. For example, a base station may include a next generation node B (gNB) in a 5G NR system; or the base station may also include an evolved Node B (NodeB or eNB or e-NodeB) in an LTE system or an evolved LTE system (LTE-Advanced, LTE-a), and the embodiment of the present invention is not limited.

3) And the downlink control channel is used for bearing control information. It is not limited herein which channels the downlink control Channel includes, for example, a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH), and may also include other downlink control channels for transmitting control information.

4) The Bandwidth Part (BP) refers to a part of a channel Bandwidth, and may also be called an "operating Bandwidth (operating Bandwidth)" or a transmission Bandwidth, and the mini BP (mini BP), a BP Unit (BP Unit), a BP sub-band, and the like, may be abbreviated as BP or BWP. BP may be a contiguous segment of resources in the frequency domain. For example, one bandwidth part contains K (K >0) subcarriers that are contiguous or non-contiguous; or, one bandwidth part is a frequency domain Resource where N (N >0) non-overlapping continuous or discontinuous Resource Blocks (RBs) are located; or, a bandwidth part is a frequency domain Resource where M (M >0) non-overlapping continuous or discontinuous Resource Block Groups (RBGs) are located, where a RBG includes P (P >0) continuous RBs. One bandwidth part is associated with one specific system parameter (numerology) including at least one of a subcarrier spacing and a Cyclic Prefix (CP).

5) The "numerology" in the embodiment of the present invention refers to a series of physical layer parameters in an air interface (air interface), and in a specific implementation, optionally, one BP may correspond to one numerology. numerology includes subcarrier spacing, type of time unit or Cyclic Prefix (CP) type, etc. Taking the subcarrier spacing as an example, if the mobile device supports subcarrier spacing of 15kHz and 30kHz, the base station may allocate a BP with subcarrier spacing of 15kHz and a BP with subcarrier spacing of 30kHz to the mobile device, and the mobile device may switch to different BPs or transmit data on two or more BPs simultaneously according to different scenes and service requirements. When the mobile device supports multiple BPs, the numerology corresponding to each BP may be the same or different.

Where the NR system supports a variety of different numerologies, users in the NR system may need to support services corresponding to a variety of different system parameters. Thus, multiple BPs configured for a user may correspond to different numerologies.

6) The terms "system" and "network" in embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified.

Unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing between a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

Having described some of the concepts related to embodiments of the present invention, the following presents a general background of embodiments of the present invention.

The mobile device does not know which format of DCI is carried by a received PDCCH in advance, nor does it know which PDCCH candidate is used for transmission of the DCI, so the mobile device must perform PDCCH blind detection to receive the corresponding DCI.

Although the mobile device does not know in advance which format of DCI is carried by the PDCCH to be received, nor which PDCCH candidate the DCI uses for transmission, the mobile device knows in which state it is and in which state it expects the received DCI. For example, the mobile device expects to receive a page while in an IDLE state (IDLE); what the mobile device expects to receive after initiating Random Access is a Random Access Response (RAR); what the mobile device expects to receive when there is uplink data to be sent is uplink scheduling, etc.

Meanwhile, the mobile device knows its search space and therefore knows which Control Channel Elements (CCEs) the DCI may be distributed over. For different desired information, the mobile device may attempt to use a corresponding Radio Network Temporary Identity (RNTI), a possible DCI format, and a possible Aggregation Level (AL) to perform a Cyclic Redundancy Check (CRC) with the CCEs in the search space belonging to the mobile device. If the CRC check is successful, the mobile device knows that the DCI is required by itself, and also knows the corresponding DCI format, thereby further decoding the DCI content.

In an LTE system, the mobile device may determine the total number of PDCCH candidates. However, the way of determining the total number of PDCCH candidates in the LTE system is not applicable to the 5GNR system. The technical problem can be solved by the technical scheme provided by the embodiment of the invention.

The application scenario of the embodiment of the present invention is described below. Please refer to fig. 1, which is a schematic view of an application scenario of the embodiment of the present invention and is an architecture diagram of an LTE system. The network elements referred to in fig. 1 include a Mobility Management Entity (MME), a Serving GateWay (S-GW), a base station, and a mobile device.

MME/S-GW: the MME is a key control node in a 3rd Generation Partnership Project (3 GPP) LTE system, belongs to a core network element, and is mainly responsible for a signaling processing part, i.e., a control plane function, including functions of access control, mobility management, attach and detach, session management, and gateway selection. The S-GW is an important network element of a core network in a 3gpp lte system, and is mainly responsible for a user plane function of user data forwarding, that is, routing and forwarding of a data packet are performed under the control of an MME.

The main network elements related to the embodiment of the present invention include a base station and a mobile device, where the base station configures a BP for the mobile device, and the mobile device can operate in the BP configured by the base station. For some descriptions of the base station and the mobile device, reference is made to the foregoing description and the description is omitted.

The technical solution provided herein can be applied to a 5G NR system (hereinafter, abbreviated as NR system), and can also be applied to a next generation mobile communication system or other similar mobile communication systems.

The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.

Referring to fig. 2, an embodiment of the present invention provides a method for detecting a downlink control channel, and in the following description, the method provided in the embodiment of the present invention is applied to the application scenario shown in fig. 1 as an example.

S21, the mobile device determines the activated BP. Wherein the activated BPs belong to the same carrier.

In the embodiment of the present invention, a network device may configure a plurality of BPs for a mobile device. Wherein BP of one configuration corresponds to one numerology. An active BP corresponds to one or more sets of control resources (CORESET), including the scheduling of data transmissions within the BP by control channels located within the BP, and/or the scheduling of data transmissions within the BP by control channels located within another BP.

The network device may configure the mobile device with multiple BPs simultaneously, for example, configure the mobile device with a first BP and a second BP simultaneously, and the network device may also activate the first BP and the second BP simultaneously. Alternatively, the network device may configure different BPs for the mobile device at different times, for example, configure and activate a first BP for the mobile device at a first time, configure and activate a second BP for the mobile device at a second time, where the first time may be before the second time, or the first time may be after the second time.

For example, a network device configures a mobile device with a first BP and a second BP. The first BP is a BP configured for the mobile equipment by the network equipment when the mobile equipment is initially accessed. Then, the network device may send a Master Information Block (MIB) to the mobile device, and after receiving the MIB, the mobile device may determine, according to the MIB, a first BP configured for the mobile device by the network device. Or, the mobile device may know the first BP configured for the mobile device by the network device according to the predefined information, for example, the mobile device determines the frequency domain resource of the synchronization signal by blind-detecting the synchronization signal, and then determines the frequency domain resource of the first BP according to the predefined relationship. Wherein the first BP may be activated by default if the first BP is a BP that the network device configures for the mobile device at the time of initial access by the mobile device.

The second BP may be a BP that the network device configures for the mobile device after the mobile device accesses the network. For example, the network device may send a System Information Block (SIB) to the mobile device, and after receiving the SIB, the mobile device may determine, according to the SIB, a second BP configured for the mobile device by the network device. Or, the network device may send a Radio Resource Control (RRC) signaling to the mobile device, and after receiving the RRC signaling, the mobile device may know, according to the RRC signaling, the second BP configured for the mobile device by the network device. Alternatively, the network device may notify the second BP allocated to the mobile device through other signaling, for example, notify the second BP configured for the mobile device through common DCI or specific DCI of the mobile device, or the network device may configure the second BP for the mobile device through a predefined manner, and the mobile device can determine the second BP configured for the mobile device by the network device according to the predefined information. The embodiment of the present invention does not limit how the network device notifies the configured second BP. In this case, the network device may activate the first BP configured for the mobile device through common DCI, specific DCI for the mobile device, or higher layer signaling. The higher layer signaling is, for example, SIB, RRC signaling, or Media Access Control (MAC) Control Element (CE).

In fact, the BPs configured by the network device for the mobile device may belong to the same carrier or may belong to different carriers. Similarly, the activated BPs of the mobile device may belong to the same carrier or belong to different carriers, which is not limited in the embodiment of the present invention.

S22, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to the activated BP or numerology corresponding to the activated BP. Wherein the total number of the downlink control channel candidates is greater than or equal to a preset threshold.

Where "detectable" refers to being detectable by the mobile device, where the action of "detecting" may not have been performed, the mobile device simply determines which downlink control channels can be used to transmit downlink control information, i.e., on which downlink control channels DCI needs to be detected. In addition, the "detection" described in the embodiments of the present invention may be understood as blind detection; the "total number of downlink control channel candidates" in the embodiment of the present invention may be understood as a theoretical maximum value specified by a protocol, and in practice, in order to reduce the blind detection overhead of the mobile device, the network device may configure that the number of PDCCH candidates of the mobile device is smaller than the maximum value.

In the embodiment of the present invention, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to the activated BP, which may be implemented in the following manner: the mobile equipment determines the total number of downlink control channel candidates detectable by the mobile equipment according to the BP set corresponding to the activated BP, wherein each BP set comprises at least one BP. Here, the "set" simply describes a part of BPs or all BPs in a plurality of active BPs, and the attributes of the part of BPs or all BPs have certain similarity or correlation, without emphasizing the action of dividing the set by the network device and/or the mobile device.

The mobile device is configured by the network device with a plurality of BPs, the plurality of BPs are divided into a plurality of BP sets in a predetermined manner or on a configuration basis, and each BP set comprises a number of BPs greater than or equal to 1. The "being divided into a plurality of sets in a predetermined manner" may be division according to system parameters corresponding to BPs, for example, the BPs corresponding to the 15kHz and 30kHz subcarrier intervals are divided into one BP set, the BPs corresponding to the 60kHz subcarrier intervals are divided into another BP set, or the BPs corresponding to the 15kHz, 30kHz and 60kHz subcarrier intervals are respectively divided into one BP set. Or grouping according to the traffic performed in the BP, for example, grouping BPs with the same traffic type as the performed traffic into a BP set. How to divide the BP set specifically may be predefined by a protocol, followed by the mobile device and the network device. Or may also be a network device to partition the BP set, which is not limited in the embodiment of the present invention.

In the embodiment of the present invention, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to the BP set corresponding to the activated BP, which includes, but is not limited to, the following modes:

1. when the activated BP of the mobile equipment corresponds to a BP set, the mobile equipment determines that the total number of the downlink control channel candidates detectable by the mobile equipment is M, wherein M is a preset threshold value, and M is an integer greater than 0;

2. when the activated BPs of the mobile device correspond to the plurality of BP sets, the mobile device determines that a total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M, where M is a preset threshold, K is the number of BP sets, and M and K are both integers greater than 0.

If the activated BP of the mobile device corresponds to a BP set, and if the system parameters corresponding to the BPs included in the BP set are the same, the BP set may only correspond to transmission of one service, and the requirement can be met without additionally increasing the number of downlink control channel candidates; or the BP set corresponds to the transmission of a plurality of services, but the requirement can be met under the condition that the number of downlink control channel candidates is not additionally increased, for example, the collision probability of the downlink control channels is within an acceptable range. So in this case, the total number of downlink control channel candidates detectable by the mobile device is M. The preset threshold may be the total number of PDCCH candidates detectable when the mobile device blindly detects scheduling information of one service transmission, for example, according to a calculation method of the LTE system, and is 16. Of course, the preset threshold may take other values, and the embodiment of the present invention is not limited. It is to be emphasized here that, in the method 1, the usage requirement can be met without additionally increasing the number of downlink control channel candidates on the basis of the total number of PDCCH candidates existing in the current mobile device, and the PDCCH collision probability is not increased, so that the system resources can be saved while the requirement is met, and the overhead of blind detection of the control channel by the mobile device can not be increased.

If the active BPs of the mobile device correspond to multiple BP sets, different BP sets are used to transmit different services, and the service types of the services may be different or the service types of the services may be the same, which is not limited in the embodiments of the present invention. Obviously, the number of required downlink control channel candidates also increases. If the requirement of the mobile device may not be met without additionally increasing the number of downlink control channel candidates, it is likely that the number of downlink control channel candidates available for scheduling control information of each service is reduced, thereby increasing the probability of downlink control channel collision. In this case, therefore, the number of downlink control channel candidates may be increased, i.e. the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M and greater than M. By the method, the detectable downlink control channel candidate number of the mobile equipment is increased, so that the mobile equipment has enough downlink control channel candidate number as possible, and the collision probability of the downlink control channel is reduced.

Taking the total number of downlink control channel candidates equal to K × M as an example, another possible expression of the above-mentioned partition set is: the mobile equipment determines the number of the downlink control channel candidates corresponding to each BP, and the number of the downlink control channel candidates corresponding to the BPs meets the following requirements: n is a radical of₁The sum of the candidate numbers of the downlink control channels corresponding to the BP is M, N₂The sum of the candidate numbers of the downlink control channels corresponding to the BP is M, … …, N_KThe sum of the candidate numbers of the downlink control channels corresponding to the BP is M; wherein N is₁、N₂、……、N_KAre all integers greater than or equal to 1, and N is₁、N₂、……、N_KThe BPs are different from each other.

Further, the above description in the 2 nd mode only describes that when the active BPs of the mobile device correspond to the plurality of BP sets, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M, and then the following description further describes that the mobile device determines when the total number of downlink control channel candidates detectable by the mobile device is less than K × M and equal to K × M.

As an example, the total number of downlink control channel candidates detectable by the mobile device increases linearly. For example, when the activated BPs of the mobile device correspond to the plurality of BP sets and the attribute information of the BP sets corresponding to the activated BPs of the mobile device are the same, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is equal to K × M.

It should be clear that in the embodiments of the present invention, M is for a specific scheduling of a mobile device, and if it is common scheduling information in a Common Search Space (CSS), it is calculated additionally and does not increase with the number of BP sets. One example is that M is for slot-based scheduled Enhanced Mobile broadband (eMBB) traffic.

In this embodiment of the present invention, the attribute information of the BP set may include any one or more of a numerology set (numerology) corresponding to the BP set, a scheduling time granularity, a DCI format type, and a service type of a service to be performed. The scheduling time granularity may be slot-based or symbol-based, or may be based on other time units.

That is, although the activated BPs belong to different BP sets, the attribute information of the different BP sets is the same, and the activated BPs may have a similar requirement on the number of downlink control channel candidates, at this time, the number of more downlink control channel candidates needs to be increased, that is, the total number of downlink control channel candidates is equal to K × M, so as to meet the requirement of the mobile device.

As another example, the total number of downlink control channel candidates detectable by the mobile device increases non-linearly. For example, when the activated BPs of the mobile device correspond to the plurality of BP sets and the attribute information of the BP sets corresponding to the activated BPs of the mobile device are different, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is less than K × M.

That is, although the activated BPs belong to different BP sets, the attribute information of the different BP sets is different, and the requirements of the activated BPs on the number of downlink control channel candidates may be different, for example, there are many users of BP services or the bit overhead of scheduling signaling is large, so the number of required downlink control channel candidates is large, while there are few users of BP services or the bit overhead of scheduling signaling is small, so the number of required downlink control channel candidates is small. In this case, the requirement can be satisfied without increasing too many downlink control channel candidates, i.e., making the total number of downlink control channel candidates less than K × M. By the method, the requirements of the mobile equipment can be met, and system resources can be saved.

In addition, since BP sets are involved, each BP set may also correspond to the number of downlink control channel candidates that can be detected, and may also be interpreted as: and the number of detectable downlink control channel candidates in the control resource set corresponding to each BP set. In the embodiment of the present invention, the mobile device may determine the number of detectable downlink control channel candidates corresponding to each BP set according to predefined information, or may determine the number of detectable downlink control channel candidates corresponding to each BP set according to information sent by the network device.

In the embodiment of the present invention, the predefined information includes, but is not limited to, the following:

first predefined information: the detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP are the same in number. I.e. the average allocation principle, so that each BP set corresponds to the same number of downlink control channels. The method is applicable to a scenario where one BP set corresponds to one service and the service types of a plurality of services corresponding to a plurality of BP sets are the same, for example, a plurality of BP sets of a mobile device all correspond to an eMBB service. Because the requirement of each service for the candidate number of the downlink control channel may be almost, the fairness of scheduling resource allocation among the services can be ensured by adopting the average allocation principle.

Second type of predefined information: the detectable number of downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of control resource sets corresponding to each BP set. Under the method, for the BP set corresponding to more control resource sets, the number of services to be transmitted may be more, and therefore, more scheduling resources are required. For example, two services in the first BP set need to be transmitted, and only one service in the second BP set needs to be transmitted, the number of downlink control channel candidates corresponding to the first BP set may be greater than the number of downlink control channel candidates corresponding to the second BP set.

Third predefined information: the detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of CCEs, Resource Blocks (RBs), Resource Block Groups (RBGs), or resource element group bundles (REG bundles) included in the control resource set corresponding to each BP set. Under the method, the BP sets corresponding to more CCEs/RBs/RBGs/REG bundles can better ensure that resource conflicts among the downlink control channels are not generated, so more downlink control channels can be allocated.

Fourth predefined information: the number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the attribute information of each BP set. The attribute information of the BP set is introduced above. For example, if the attribute information of the BP set includes a service type corresponding to the BP set, the number of detectable downlink control channel candidates corresponding to the BP set of an Ultra Reliable Low Latency Communication (URLLC) service may be smaller than the number of detectable downlink control channel candidates corresponding to the BP set of an eMBB service. The former has fewer users or the bit overhead of the scheduling signaling is smaller, so the required candidate quantity of the downlink control channel is fewer; the latter has a large number of users or a large bit overhead of scheduling signaling, and thus requires a large number of downlink control channel candidates.

If the mobile device determines the number of detectable downlink control channel candidates corresponding to each BP set according to the information sent by the network device, the network device may send indication information to the mobile device, where the indication information may be used to indicate the number of detectable downlink control channel candidates corresponding to the BP set corresponding to the activated BP of the mobile device. In this case, the indication result may be the same as that of any one of the predefined information as described above, or may be different from that of any one of the predefined information. In some possible implementations, the sending, by the network device, the indication information may include: the network equipment sends dynamic signaling, that is, the network equipment sends physical layer signaling, the physical layer signaling carries the indication information, and the physical layer signaling can be common downlink control information or UE specific downlink control information; or, the network device sends a semi-static signaling, that is, the network device sends a high-level signaling, where the high-level signaling carries the indication information, and the high-level signaling may be a broadcast signaling, a system message, a Radio Resource Control (RRC) signaling or a Media Access Control (MAC) level signaling, or the like.

As described above, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to the activated BP, and the embodiment of the present invention further provides another way, that is, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to numerology corresponding to the activated BP, which is described below.

In this embodiment of the present invention, determining, by the mobile device, the total number of downlink control channel candidates detectable by the mobile device according to numerology corresponding to the activated BP may be implemented in the following manner: and the mobile equipment determines the total number of the downlink control channel candidates detectable by the mobile equipment according to the numerology set which the numerology corresponding to the activated BP belongs to. Wherein each numerology set comprises at least one numerology. Likewise, the "set" herein merely describes a part of or all of the numerologies corresponding to the plurality of activated BPs, and the attributes of the BPs corresponding to the part of or all of the numerologies have certain similarity or correlation, without emphasizing that the network device and/or the mobile device has an action of dividing the set.

For example, the plurality of numerologies are divided into a plurality of sets, either predefined or based on configuration, each numerology set including a numerology number greater than or equal to 1. For example, numerology with corresponding subcarrier spacing of 15kHz, 30kHz is divided into one numerology set, numerology with corresponding subcarrier spacing of 60kHz is divided into another numerology set, or numerology with corresponding subcarrier spacing of 15kHz, 30kHz, and 60kHz is each divided into one numerology set.

In the embodiment of the present invention, the mobile device determines the total number of downlink control channel candidates detectable by the mobile device according to the numerology set to which the numerology corresponding to the activated BP belongs, including but not limited to the following ways:

a. when the numerology corresponding to the activated BP of the mobile device belongs to a numerology set, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is M, wherein M is a preset threshold; wherein M is an integer greater than 0;

b. when the numerology corresponding to the activated BP of the mobile device belongs to a plurality of numerology sets, the mobile device determines that a total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M, where M is a preset threshold and K is a number of numerology sets. Wherein M and K are both integers greater than 0.

If the numerology corresponding to the active BP of the mobile device belongs to a numerology set, then a numerology set may only correspond to the transmission of one service, and the requirement can be satisfied without additionally increasing the number of downlink control channel candidates; or the numerology set corresponds to the transmission of multiple services, but the requirement can be satisfied without additionally increasing the number of downlink control channel candidates, for example, the downlink control channel collision probability is within an acceptable range. So in this case, the total number of downlink control channel candidates detectable by the mobile device is M. The preset threshold may be the total number of PDCCH candidates detectable when the mobile device blindly detects scheduling information of one service transmission, for example, according to a calculation method of the LTE system, the preset threshold is 16. Of course, the preset threshold may take other values, and the embodiment of the present invention is not limited. It is to be emphasized that, in the a-th mode, the usage requirement can be met without additionally increasing the number of downlink control channel candidates on the basis of the total number of PDCCH candidates existing in the current mobile device, and the PDCCH collision probability is not increased, so that the system resources can be saved while the requirement is met, and the overhead of blind detection of the control channel by the mobile device can not be increased.

Taking the total number of downlink control channel candidates equal to K × M as an example, another possible expression of the above-mentioned partition set is: the mobile equipment determines the number of the downlink control channel candidates corresponding to each BP, and the number of the downlink control channel candidates corresponding to the BPs meets the following requirements: n is a radical of₁The sum of the candidate numbers of the downlink control channels corresponding to the BPs with the same numerology is M, N₂The sum of the candidate numbers of the downlink control channels corresponding to the BPs with the same numerology is M, … …, N_KThe sum of the candidate numbers of the downlink control channels corresponding to the BPs with the same numerology is M; wherein N is₁、N₂、……、N_KAre all integers greater than or equal to 1, and N is₁、N₂、……、N_KThe BPs are different from each other.

Further, the foregoing description in the second mode only describes that, when the numerology corresponding to the active BP of the mobile device belongs to the plurality of numerologies sets, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is less than or equal to K × M, and then further describes below for determining when the total number of downlink control channel candidates detectable by the mobile device is less than K × M and equal to K × M.

As an example, the total number of downlink control channel candidates detectable by the mobile device increases linearly. For example, when the numerology corresponding to the active BPs of the mobile device belongs to the plurality of numerology sets and the attribute information of the numerology set corresponding to the active BPs of the mobile device are all the same, the mobile device determines that the total number of downlink control channel candidates detectable by the mobile device is equal to K × M.

It should be clear that in the embodiments of the present invention, M is for a specific scheduling of a mobile device, and if it is common scheduling information in a common search space, it is calculated additionally and does not increase with the number of numerology sets. One example is that M is for slot-based scheduled eMBB traffic.

In this embodiment of the present invention, the attribute information of the numerology set may include any one or more of a traffic type, a scheduling time granularity, and a DCI format type corresponding to the numerology set. The scheduling time granularity may be slot-based or symbol-based, or may be based on other time units.

That is, although the active BPs belong to different numerology sets, the attribute information of the different numerology sets is the same, e.g., multiple BP sets of a mobile device each correspond to eMBB traffic. Since the number of the activated BPs may be almost the same as the number of the downlink control channel candidates, the number of the downlink control channel candidates is increased more, that is, the total number of the downlink control channel candidates is equal to K × M, so as to meet the requirement of the mobile device.

As another example, the total number of downlink control channel candidates detectable by the mobile device increases non-linearly. For example, when numerology corresponding to the active BPs of the mobile device belongs to a plurality of numerology sets and attribute information of numerology sets corresponding to the active BPs of the mobile device are different, the mobile device determines that a total number of downlink control channel candidates detectable by the mobile device is less than K × M.

That is, although the activated BPs belong to different numerology sets, but the attribute information of different numerology sets is different, the requirements of the activated BPs on the number of downlink control channel candidates may be different, for example, there is a larger number of users of the BP service, or the bit overhead of the scheduling signaling is larger, so that the number of required downlink control channel candidates is larger, while there is a smaller number of users of the BP service, or the bit overhead of the scheduling signaling is smaller, so that the number of required downlink control channel candidates is smaller. In this case, the requirement can be satisfied without increasing too many downlink control channel candidates, i.e., making the total number of downlink control channel candidates less than K × M. By the method, the requirements of the mobile equipment can be met, and system resources can be saved.

Take the downlink control channel as PDCCH as an example. There is only one numerology in LTE systems, namely 15 kHz. However, multiple numerologies are supported in a 5G NR system, and the same mobile device may need to detect data and scheduling information for multiple different numerologies simultaneously. Then, in the case that the total number of PDCCH candidates is unchanged with respect to the LTE system, the number of PDCCH candidates allocated to each numerology is reduced, and the probability of different mobile devices selecting the same PDCCH candidate is increased, thereby increasing the PDCCH collision probability. After the technical solution provided by the embodiment of the present invention is adopted, the total number of PDCCH candidates may be increased, so that the number of PDCCH candidates allocated to each numerology is correspondingly increased, or in other words, the embodiment of the present invention does not reduce the number of PDCCH candidates allocated to each numerology as much as possible, thereby reducing the PDCCH collision probability.

In addition, since numerology sets are involved, each numerology set may also correspond to a detectable number of downlink control channel candidates, which may also be interpreted as: and the number of detectable downlink control channel candidates in the control resource set corresponding to each numerology set. In the embodiment of the present invention, the mobile device may determine the number of detectable downlink control channel candidates corresponding to each numerology set according to predefined information, or may determine the number of detectable downlink control channel candidates corresponding to each numerology set according to information sent by the network device.

first predefined information: the detectable number of downlink control channel candidates corresponding to each numerology set to which the numerology corresponding to the activated BP belongs is the same. I.e., the average allocation principle, such that each numerology set corresponds to the same number of downlink control channels. The method is applicable to a scenario where one BP set corresponds to one service and the service types of a plurality of services corresponding to a plurality of BP sets are the same, for example, both BP sets of a mobile device correspond to an eMBB service. Because the requirement of each service for the candidate number of the downlink control channel may be almost, the fairness of scheduling resource allocation among the services can be ensured by adopting the average allocation principle.

Second type of predefined information: the detectable number of downlink control channel candidates corresponding to each numerology set to which the numerology set corresponding to the activated BP belongs is determined by the mobile device according to the number of the control resource sets corresponding to each numerology set. Under the method, for the BP set corresponding to more control resource sets, the number of services to be transmitted may be more, and therefore, more scheduling resources are required. For example, two services in the first numerology set need to be transmitted, and only one service in the second numerology set needs to be transmitted, the number of downlink control channel candidates corresponding to the first numerology set may be greater than the number of downlink control channel candidates corresponding to the second numerology set.

Third predefined information: the detectable number of downlink control channel candidates corresponding to each numerology set to which the numerology corresponding to the activated BP belongs is determined by the mobile device according to the number of CCEs, RBs, RBGs, or REG bundles included in the control resource set corresponding to each numerology set. Under the method, the BP sets corresponding to more CCEs/RBs/RBGs/REG bundles can better ensure that resource conflicts among the downlink control channels are not generated, so more downlink control channels can be allocated.

Fourth predefined information: the number of detectable downlink control channel candidates for each numerology set to which numerology corresponding to the activated BP belongs is determined by the mobile device according to the attribute information of each numerology set. The attribute information of the numerology set is introduced above. For example, the attribute information of the numerology set includes a traffic type corresponding to the numerology set, the number of detectable downlink control channel candidates corresponding to the numerology set corresponding to the URLLC traffic may be less than the number of detectable downlink control channel candidates corresponding to the numerology set corresponding to the eMBB traffic. Some numerology aggregation services have a larger number of users or a larger bit overhead of the scheduling signaling, and thus require a larger number of downlink control channel candidates, while some numerology aggregation services have a smaller number of users or a smaller bit overhead of the scheduling signaling, and thus require a smaller number of downlink control channel candidates.

If the mobile device determines the detectable number of downlink control channel candidates corresponding to each numerology set according to the information sent by the network device, the network device may send indication information to the mobile device, where the indication information may be used to indicate the detectable number of downlink control channel candidates corresponding to the numerology set to which the numerology corresponding to the activated BP of the mobile device belongs. In this case, the indication result may be the same as that of any one of the predefined information as described above, or may be different from that of any one of the predefined information. In some possible implementations, the sending, by the network device, the indication information may include: the network equipment sends dynamic signaling, that is, the network equipment sends physical layer signaling, the physical layer signaling carries the indication information, and the physical layer signaling can be common downlink control information or UE specific downlink control information; or, the network device sends a semi-static signaling, that is, the network device sends a high-level signaling, where the high-level signaling carries the indication information, and the high-level signaling may be a broadcast signaling, a system message, an RRC signaling, or an MAC layer signaling.

And S23, the mobile device detects the downlink control channel according to the determined total number of the downlink control channel candidates.

It is noted that the mobile device can detect the downlink control channel directly according to the determined total number of downlink control channel candidates. Or, because the total number of downlink control channel candidates determined in the embodiment of the present invention is the maximum value of the theoretical number of downlink control channel candidates, in practical applications, the network device may also configure that the number of downlink control channel candidates of the mobile device is less than or equal to the maximum value, and if the network device configures this, the mobile device may also detect the downlink control channel according to the number of downlink control channel candidates configured by the network device.

After determining the total number of downlink control channel candidates, the mobile device may detect the downlink control channel, thereby completing the detection of the DCI. It can be seen that the mobile device detecting the downlink control channel may be understood as detecting DCI, or may be understood as receiving DCI, so at S23 in fig. 2, the network device transmits DCI, so that the mobile device may receive DCI (or the downlink control channel), where the network device is the DCI transmitted through the downlink control channel, and the mobile device obtains DCI by detecting the downlink control channel.

The embodiment of the invention redefines a method for determining the number of downlink control channel candidates of the mobile equipment aiming at a scene where multiple numerology sets coexist in a 5G NR system, and by taking the downlink control channel as a PDCCH as an example, namely redefining the number of PDCCH blind tests, ensures that the number of PDCCH candidates of different service types corresponding to different numerology sets is unchanged as much as possible, and further does not cause the increase of PDCCH collision probability.

The following describes an apparatus corresponding to each of the above-described method embodiments with reference to the drawings.

Fig. 3 is a schematic diagram of a mobile device 300 according to an embodiment of the present invention. The mobile device 300 may be applied in the scenario shown in fig. 1 for executing the method provided by the embodiment shown in fig. 2. As shown in fig. 4, the mobile device 300 includes aprocessing unit 301 and atransceiving unit 302. Theprocessing unit 301 and thetransceiver unit 302 are specifically configured to perform other processing except for information transceiving of the mobile device in the embodiment shown in fig. 2, and thetransceiver unit 302 is specifically configured to perform transceiving processing of the mobile device in the embodiment shown in fig. 2.

For example, aprocessing unit 301 for determining an activated BP; wherein the activated BP belongs to one carrier.Processing unit 301 is further configured to determine a total number of downlink control channel candidates detectable by the mobile device according to the activated BP or the numerology set corresponding to the activated BP, where the total number of downlink control channel candidates detectable by the mobile device is greater than or equal to a preset threshold. Atransceiving unit 302, configured to detect a downlink control channel according to the determined total number of downlink control channel candidates.

For details, refer to the detailed description of the embodiment shown in fig. 2, and are not repeated herein.

It should be understood that the above division of the units is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. In the embodiment of the present invention, the transceiving function of the mobile device 300 may be implemented by a transceiver, theprocessing unit 301 may be implemented by a processor, and thetransceiving unit 302 may be implemented by a transceiver. As shown in fig. 4,mobile device 400 may include aprocessor 401, atransceiver 402, and amemory 403. Thememory 403 may be used to store a program/code preinstalled at the factory of themobile device 400, or may store a code or the like used when theprocessor 401 executes.

It is to be understood that themobile device 400 according to the embodiment of the present invention may correspond to the mobile device in the embodiment shown in fig. 2 according to the embodiment of the present invention, wherein thetransceiver 402 is configured to perform various information transceiving in the embodiment shown in fig. 2, for example, detecting a downlink control channel, and theprocessor 401 is configured to perform other processing besides the information transceiving by the mobile device in the embodiment shown in fig. 2. And will not be described in detail herein.

Fig. 5 provides a schematic structural diagram of a mobile device. The mobile device may be used in the scenario shown in fig. 1 to perform the method provided by the embodiment shown in fig. 2. For ease of illustration, fig. 5 shows only the major components of the mobile device. As shown in fig. 5, themobile device 50 includes a processor, a memory, a control circuit, an antenna, and an input-output means. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves, receiving signaling indication and/or reference signals transmitted by a base station, and performing various transceiving of information performed by the mobile device in the embodiment shown in fig. 2, which is described above, and may be referred to in the description of the related parts above. The processor is mainly used for processing a communication protocol and communication data, controlling the entire mobile device, executing a software program, and processing data of the software program, for example, to support the mobile device to perform actions other than information transmission and reception in the embodiment shown in fig. 2. The memory is used primarily for storing software programs and data. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the mobile device is powered on, the processor can read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the mobile equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 5 shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this respect in the embodiment of the present invention.

As an alternative implementation, the processor may include a baseband processor and a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the entire mobile device, execute the software program, and process the data of the software program. The processor in fig. 5 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that a mobile device may include multiple baseband processors to accommodate different network formats, multiple central processors to enhance its processing capabilities, and various components of the mobile device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present invention, the antenna and the transceiver circuit with transceiver function may be regarded as thetransceiver unit 501 of themobile device 50, and the processor with processing function may be regarded as theprocessing unit 502 of themobile device 50. As shown in fig. 5, themobile device 50 includes atransceiving unit 501 and aprocessing unit 502. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Alternatively, a device for implementing a receiving function in thetransceiving unit 501 may be regarded as a receiving unit, and a device for implementing a sending function in thetransceiving unit 501 may be regarded as a sending unit, that is, thetransceiving unit 501 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.

In embodiments of the present invention, the transceiver may be a wired transceiver, a wireless transceiver, or a combination thereof. The wired transceiver may be, for example, an ethernet interface. The ethernet interface may be an optical interface, an electrical interface, or a combination thereof. The wireless transceiver may be, for example, a wireless local area network transceiver, a cellular network transceiver, or a combination thereof. The processor may be a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processor may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof. The memory may include volatile memory (volatile memory), such as random-access memory (RAM); the memory may also include a non-volatile memory (english: non-volatile memory), such as a read-only memory (ROM), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD); the memory may also comprise a combination of memories of the kind described above.

Also included in fig. 4 is a bus interface, which may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by a processor, and memory, represented by a memory, linked together. The bus interface may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver provides a means for communicating with various other apparatus over a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory may store data used by the processor in performing operations.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in embodiments of the present invention may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.

The various illustrative logical units and circuits described in connection with the embodiments disclosed herein may be implemented or operated through the design of a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software cells may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be located in a mobile device. In the alternative, the processor and the storage medium may reside as discrete components in a mobile device.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

All parts of the specification are described in a progressive mode, the same and similar parts of all embodiments can be referred to each other, and each embodiment is mainly introduced to be different from other embodiments. In particular, as to the apparatus and system embodiments, since they are substantially similar to the method embodiments, the description is relatively simple and reference may be made to the description of the method embodiments in relevant places.

The foregoing description of the specification may enable any person skilled in the art to make or use the teachings of the present application, and any modifications based on the disclosed teachings should be considered as obvious in the art, and the general principles described herein may be applied to other variations without departing from the spirit or scope of the present application. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for detecting a downlink control channel, comprising:

the mobile equipment determines an activated bandwidth part BP; the activated BP belongs to one carrier;

the mobile equipment determines the total number of the downlink control channel candidates which can be detected by the mobile equipment according to the activated BP or the system parameters corresponding to the activated BP; wherein the total number of the downlink control channel candidates is greater than or equal to a preset threshold;

the mobile equipment detects a downlink control channel according to the total number of the downlink control channel candidates;

the determining, by the mobile device, the total number of downlink control channel candidates detectable by the mobile device according to the activated BP or the system parameter corresponding to the activated BP includes: the mobile equipment determines the total number of the downlink control channel candidates according to a system parameter set to which the system parameter corresponding to the activated BP belongs; each system parameter set comprises at least one system parameter;

the determining, by the mobile device, the total number of downlink control channel candidates according to the system parameter set to which the system parameter corresponding to the activated BP belongs includes: when the system parameters corresponding to the activated BP belong to a plurality of system parameter sets, the mobile device determines that the total number of downlink control channel candidates is less than or equal to K × M, where M is the preset threshold, K is the number of the system parameter sets, M is an integer greater than zero, and K is an integer greater than zero;

when the system parameter corresponding to the activated BP belongs to a plurality of system parameter sets, the determining, by the mobile device, that the total number of downlink control channel candidates is less than or equal to K × M includes:

when the system parameters corresponding to the activated BPs belong to a plurality of system parameter sets and the attribute information of the system parameter sets to which the system parameters corresponding to the activated BPs belong is the same, the mobile device determines that the total number of downlink control channel candidates is equal to K × M; or

When the system parameters corresponding to the activated BPs belong to a plurality of system parameter sets and the attribute information of the system parameter sets to which the system parameters corresponding to the activated BPs belong is different, the mobile device determines that the total number of the downlink control channel candidates is less than K × M.

2. The method of claim 1, wherein the determining, by the mobile device, the total number of downlink control channel candidates detectable by the mobile device according to the activated BP or the system parameter corresponding to the activated BP, further comprises:

the mobile equipment determines the total number of the downlink control channel candidates according to the BP set corresponding to the activated BP; wherein each BP set comprises at least one BP.

3. The method of claim 2, wherein the determining, by the mobile device, the total number of downlink control channel candidates according to the BP set corresponding to the activated BP comprises:

when the activated BP corresponds to a BP set, the mobile device determines that the total number of downlink control channel candidates is M, where M is the preset threshold and is an integer greater than zero; or

When the activated BPs correspond to a plurality of BP sets, the mobile device determines that the total number of downlink control channel candidates is less than or equal to K × M, where M is the preset threshold, K is the number of BP sets, M is an integer greater than zero, and K is an integer greater than zero.

4. The method of claim 3, wherein when the activated BPs correspond to a plurality of BP sets, then the mobile device determining that the total number of downlink control channel candidates is less than or equal to K x M, comprises:

when the activated BPs correspond to a plurality of BP sets and the attribute information of the BP sets corresponding to the activated BPs are the same, the mobile device determines that the total number of downlink control channel candidates is equal to K × M; or

When the activated BPs correspond to a plurality of BP sets and attribute information of the BP sets corresponding to the activated BPs are different, the mobile device determines that the total number of downlink control channel candidates is less than K × M.

5. The method of any of claims 2-4, wherein the number of downlink control channel candidates for each set of BPs corresponding to the activated BPs comprises at least one of:

the detectable downlink control channel candidate quantity corresponding to each BP set corresponding to the activated BP is the same; or

The detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of control resource sets corresponding to each BP set; or

The detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the number of control channel elements included in the control resource set corresponding to each BP set or the number of corresponding resource blocks or resource block groups on a control resource set frequency domain; or

The number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined by the mobile device according to the attribute information of each BP set.

6. The method of claim 2, wherein the determining, by the mobile device, the total number of downlink control channel candidates according to a system parameter set to which a system parameter corresponding to the activated BP belongs further comprises:

and when the system parameter corresponding to the activated BP belongs to one system parameter set, the mobile device determines that the total number of the downlink control channel candidates is M, wherein M is the preset threshold value, and M is an integer greater than zero.

7. The method of any of claims 2-4, wherein the number of downlink control channel candidates for each system parameter set corresponding to the activated BP comprises at least one of:

the detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is the same; or

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the number of control resource sets corresponding to each system parameter set; or

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the number of control channel elements included in the control resource set corresponding to each system parameter set or the number of corresponding resource blocks or resource block groups on the frequency domain of the control resource set corresponding to each system parameter set; or

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the mobile device according to the attribute information of each system parameter set.

8. A mobile device, comprising:

a processor for determining an active bandwidth portion, BP; the activated BP belongs to one carrier;

the processor is further configured to determine a total number of downlink control channel candidates detectable by the mobile device according to the activated BP or a system parameter corresponding to the activated BP; wherein the total number of the downlink control channel candidates is greater than or equal to a preset threshold;

a transceiver for detecting a downlink control channel according to the total number of the downlink control channel candidates;

wherein the processor is configured to determine the total number of downlink control channel candidates according to the activated BP or the system parameter corresponding to the activated BP, and the determining includes: the processor is configured to determine the total number of downlink control channel candidates according to a system parameter set to which a system parameter corresponding to the activated BP belongs; each system parameter set comprises at least one system parameter;

the processor is configured to determine the total number of downlink control channel candidates according to a system parameter set to which a system parameter corresponding to the activated BP belongs, and includes: the processor is configured to determine that the total number of downlink control channel candidates of the mobile device is less than or equal to K × M when a system parameter corresponding to an activated BP of the mobile device belongs to a plurality of system parameter sets, where M is the preset threshold, K is the number of the system parameter sets, M is an integer greater than zero, and K is an integer greater than zero;

the processor is configured to determine that the total number of downlink control channel candidates of the mobile device is less than or equal to K × M when the system parameter corresponding to the activated BP belongs to a plurality of system parameter sets, and the method includes:

the processor is configured to determine that the total number of downlink control channel candidates is equal to K × M when the system parameters corresponding to the activated BPs belong to a plurality of system parameter sets and the attribute information of the system parameter sets to which the system parameters corresponding to the activated BPs belong is the same; or

The processor is configured to determine that the total number of downlink control channel candidates is less than K × M when the system parameter corresponding to the activated BP belongs to multiple system parameter sets and the attribute information of the system parameter sets to which the system parameter corresponding to the activated BP belongs is different.

9. The mobile device of claim 8, wherein the processor is configured to determine the total number of downlink control channel candidates according to the activated BP or a system parameter corresponding to the activated BP, further comprising:

the processor is configured to determine the total number of downlink control channel candidates according to the BP set corresponding to the activated BP; wherein each BP set comprises at least one BP.

10. The mobile device of claim 9, wherein the processor is configured to determine the total number of downlink control channel candidates according to the BP set corresponding to the activated BP, and comprises:

the processor is configured to determine that the total number of downlink control channel candidates is M when the activated BP corresponds to a BP set, where M is the preset threshold and is an integer greater than zero; or

The processor is configured to determine that the total number of downlink control channel candidates is less than or equal to K × M when the activated BPs correspond to a plurality of BP sets, where M is the preset threshold, K is the number of BP sets, M is an integer greater than zero, and K is an integer greater than zero.

11. The mobile device of claim 10, wherein the processor is configured to determine that the total number of downlink control channel candidates is less than or equal to K x M when the activated BPs correspond to a plurality of BP sets, comprising:

the processor is configured to determine that the total number of downlink control channel candidates is equal to K × M when the activated BPs correspond to a plurality of BP sets and attribute information of the BP sets corresponding to the activated BPs are the same; or

The processor is configured to determine that the total number of downlink control channel candidates is less than K × M when the activated BPs correspond to multiple BP sets and attribute information of the BP sets corresponding to the activated BPs are different.

12. The mobile device of any of claims 9-11, wherein the number of detectable downlink control channel candidates for each BP set corresponding to the activated BP comprises at least one of:

The detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the processor according to the number of control resource sets corresponding to each BP set; or

The detectable downlink control channel candidate number corresponding to each BP set corresponding to the activated BP is determined by the processor according to the number of control channel elements included in the control resource set corresponding to each BP set or the number of corresponding resource blocks or resource block groups on a control resource set frequency domain; or

The number of detectable downlink control channel candidates corresponding to each BP set corresponding to the activated BP is determined by the processor according to the attribute information of each BP set.

13. The mobile device of claim 9, wherein the processor is configured to determine the total number of downlink control channel candidates according to a system parameter set to which a system parameter corresponding to the activated BP belongs, further comprising:

the processor is configured to determine that the total number of downlink control channel candidates of the mobile device is M when the system parameter corresponding to the activated BP belongs to one system parameter set, where M is the preset threshold and M is an integer greater than zero.

14. The mobile device of any of claims 9-11, wherein the number of detectable downlink control channel candidates for each set of system parameters for the activated BP comprises at least one of:

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the processor according to the number of the control resource sets corresponding to each system parameter set; or

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the processor according to the number of control channel elements included in the control resource set corresponding to each system parameter set or the number of corresponding resource blocks or resource block groups on the frequency domain of the control resource set corresponding to each system parameter set; or

The detectable downlink control channel candidate number corresponding to each system parameter set to which the system parameter corresponding to the activated BP belongs is determined by the processor according to the attribute information of each system parameter set.

15. A computer-readable storage medium comprising instructions that, when executed on a mobile device, cause the mobile device to perform the method of any of claims 1-7.