CN110324122B

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Info

Publication number: CN110324122B
Application number: CN201810268062.9A
Authority: CN
Inventors: 蒋琦; 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2018-03-29
Filing date: 2018-03-29
Publication date: 2021-11-23
Anticipated expiration: 2038-03-29
Also published as: CN110324122A

Abstract

The application discloses a method and a device in a user equipment, a base station and the like used for wireless communication. The user equipment monitors first signaling on K1 candidate time frequency resources in a target time window and operates a first wireless signal; the target time window comprises K2 reference subframes; the first candidate time frequency resource is one of the K1 candidate time frequency resources; the first candidate time-frequency resource comprises a first RE set, and the first RE set occupies a TDD special subframe; the K2 is related to at least one of { the target mapping criterion, the number of RE sets included in the TDD special subframe }. According to the method and the device, the mapping rule of the NCCE transmitted on the TDD special subframe is linked with the K2, so that the performance of the TDD special subframe for transmitting the NPDCCH is improved, and the overall performance of the system is improved.

Description

Method and device used in user equipment and base station for wireless communication

Technical Field

The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a transmission method and apparatus in a narrowband internet of things system.

Background

In a conventional 3 GPP-3 rd Generation partnership Project (3 GPP-3 rd Generation Partner Project) Long Term Evolution (LTE-Long Term Evolution) system, a frame structure of a Time Division Duplex (TDD-Time Division Duplex) system is defined, some allocated subframes are used for Uplink transmission of an Uplink (Uplink, UL) link, other subframes are used for Downlink (DL) link transmission, and a Time switch between Downlink and Uplink occurs in a special subframe, which may be further divided into a DwPTS (Downlink Pilot Time Slot ), a GP (guard interval), and an UpPTS (Uplink Pilot Time Slot). Although the DwPTS is short in length relative to the normal subframe, it can be essentially transmitted as one downlink subframe.

The narrowband Internet of Things (NB-IoT-Narrow Band Internet of Things) is an emerging technology in the IoT field, wherein the NB-IoT is constructed in a cellular network, only the bandwidth of about 180KHz is consumed, and the NB-IoT can be directly deployed in a traditional network so as to reduce the deployment cost and realize smooth upgrade. NB-IoT was first introduced in 3GPP (3rd Generation Partner Project) Rel-13, where the NB-IoT system of Rel-13 was enhanced in 3GPP Rel-14. An important enhancement aspect in Rel-14 is to give more functions to non-anchor physical resource blocks, such as supporting transmission of paging channel, supporting transmission of random access channel, etc., and introduce functions of positioning and multicast. In 3GPP Rel-15, NB-IoT is further enhanced, including reducing power consumption, enhancing measurement accuracy, introducing special scheduling requests and the like. In particular, support for TDD is also introduced in Rel-15.

Disclosure of Invention

When NB-IOT communication is performed in a TDD scenario, a problem to be solved is whether DwPTS is used for downlink transmission. Considering the spectral efficiency and the insensitivity of NB-IOT to delay, it is clear that using DwPTS for downlink transmission will increase the spectral efficiency and throughput of the system. However, when the DwPTS is used for NPDCCH (Narrowband Physical Downlink Control Channel) transmission, how to map NCCE (Narrowband Control Channel Element) to an RE included in the DwPTS will be a problem to be discussed first. For this problem, a simple solution is to follow the mapping rule of FDD (FDD-Frequency Division Duplex), that is, dividing the RE (Resource Element) occupied by one NB-IOT downlink subframe into two parts according to the 6 subcarriers with lower Frequency domain positions and the 6 subcarriers with higher Frequency domain positions, where any one part is a RE set occupied by one NCCE, that is, one NB-IOT downlink subframe includes two NCCEs; and in one RE set, the NCCEs are mapped according to the second order of the first time domain of the frequency domain. The advantage of the FDD legacy scheme described above is that the NCCE to RE mapping criteria are simplified and NCCEs on different subframes can be received in combination to achieve the combining gain. However, if the mapping in DwPTS is in FDD mode, because the number of multicarrier symbols included in DwPTS is not fixed, the FDD mode may result in that the REs included in two NCCEs in one DwPTS are both punctured greatly when the DwPTS includes a small number of multicarrier symbols; which in turn may affect the decoding performance of NPDCCH.

Based on the above problems and analysis, the present application discloses a solution. Without conflict, embodiments and features in embodiments in the user equipment of the present application may be applied to the base station and vice versa. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

The application discloses a method used in a user equipment for wireless communication, characterized by comprising:

monitoring the first signaling on K1 candidate time-frequency resources in the target time window;

operating a first wireless signal if the first signaling is detected;

wherein the target time window comprises K2 reference subframes, a first candidate time-frequency resource is one of the K1 candidate time-frequency resources, and any one of the K1 candidate time-frequency resources comprises a positive integer number of RE sets; the first RE set is one RE set of positive integer RE sets included in the first candidate time frequency resource, a time domain resource occupied by the first RE set belongs to a first subframe, and the first subframe is a TDD special subframe; the first subframe comprises a downlink pilot slot comprising L1 multicarrier symbols, the L1 being a positive integer; the first set of REs comprises Q REs; a first modulation symbol sequence is used for carrying the first signaling, and the first modulation symbol sequence consists of Q modulation symbols in sequence; assuming that the first signaling is transmitted in the first candidate time-frequency resource, the Q modulation symbols are respectively mapped to the Q REs in the first subframe according to a target mapping criterion, at least one of { the target mapping criterion, the number of RE sets included in the first subframe } is related to the K2; the K2 reference subframes include all TDD normal subframes occupied by the K1 candidate time-frequency resources in a time domain, or the K2 reference subframes include all TDD subframes occupied by the K1 candidate time-frequency resources in a time domain; the first signaling is used for determining time-frequency resources occupied by the first wireless signal, and the operation is receiving or the operation is transmitting; the K1 and the K2 are both positive integers; and Q is a positive integer.

As an example, the above method has the benefits of: the first RE set is the NCCE transmitted on a DwPTS, the K2 is the Repetition Number (Repetition Number) of the NPDCCH configured by the high-level signaling, the target mapping criterion adopted by the first RE set is linked with the K2, the downlink resource of the DwPTS is fully utilized, the mapping criterion of the NCCE is optimized, and the performance loss caused by punching of excessive REs in each NCCE is avoided.

According to one aspect of the present application, the above method is characterized in that the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

According to an aspect of the present application, the above method is characterized in that the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

According to an aspect of the present application, the above method is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

As an example, the above method has the benefits of: when the K2 is smaller than a first threshold and the L1 is smaller than a second threshold, it indicates that the NPDCCH Configuration has a smaller number of repetitions and the number of multicarrier symbols included in the DwPTS corresponding to the TDD Configuration (Configuration) is smaller; in such a scenario, the performance of the NPDCCH depends on the performance of a single NCCE, and mapping is performed according to the first mapping criterion, so that the number of punctured REs of at least the first NCCE in the DwPTS can be ensured to be small, which is beneficial to improving the performance.

According to an aspect of the present application, the above method is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

As an example, the above method has the benefits of: the second mapping criterion may achieve frequency domain Diversity Gain (Diversity Gain) to further improve performance, in addition to the advantages of the first mapping criterion.

According to an aspect of the present application, the above method is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain and L2 multicarrier symbols in a time domain, the L2 is a positive integer greater than the L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

As an example, the above method has the benefits of: when the K2 is not less than a first threshold and the L1 is not less than a second threshold, it indicates that the NPDCCH configuration has a larger number of repetitions and the DwPTS corresponding to the TDD configuration has a larger number of multicarrier symbols; in this scenario, the performance of the NPDCCH is more dependent on the repeated transmission, and mapping is performed according to the third mapping criterion, although the puncturing sacrifices the performance of the NCCE in the DwPTS, all the NCCEs repeatedly transmitted may perform multi-carrier-level combining (Symbol-level combining), which simplifies the decoding complexity of the NPDCCH while ensuring the performance.

According to an aspect of the present application, the above method is characterized in that the number of RE sets included in the first subframe and the K2 are related to: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

As an example, the above method has the benefits of: when the K2 is smaller than a third threshold value, the number of repeated NPDCCH is smaller; in this scenario, the performance of NPDCCH is more dependent on the performance of a single NCCE, and the number of RE sets included in the first subframe is equal to 1, that is, the first subframe includes only one NCCE, thereby ensuring that the transmission performance of the NCCE can be guaranteed even if the NCCE is punctured.

As an example, another benefit of the above method is: when the K2 is not less than a third threshold, the repetition number of the NPDCCH is larger; in this scenario, the performance of NPDCCH depends on repeated transmission, the number of RE sets included in the first subframe is equal to 2, that is, the first subframe includes two NCCEs, and the FDD mapping criterion is used to ensure that more NCCEs are accommodated in a target time window, so that NPDCCHs of more user equipments can be accommodated.

According to an aspect of the application, the above method is characterized in that the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

According to one aspect of the application, the above method is characterized by comprising:

receiving first information;

wherein the first information is used to indicate the K2, the first information being transmitted over an air interface.

The application discloses a method in a base station used for wireless communication, characterized by comprising:

transmitting a first signaling in a target time window;

processing the first wireless signal;

sending first information;

The application discloses a user equipment used for wireless communication, characterized by comprising:

a first receiver module to monitor first signaling on K1 candidate time-frequency resources in a target time window;

a first transceiver module to operate a first wireless signal if the first signaling is detected;

As an embodiment, the user equipment used for wireless communication described above is characterized in that the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

As an embodiment, the above user equipment for wireless communication is characterized in that the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

As an embodiment, the above user equipment for wireless communication is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

As an embodiment, the above user equipment for wireless communication is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

As an embodiment, the above user equipment for wireless communication is characterized in that the first subframe comprises 12 consecutive subcarriers in frequency domain and L2 multicarrier symbols in time domain, the L2 is a positive integer greater than the L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

As an embodiment, the above user equipment used for wireless communication is characterized in that the number of RE sets included in the first subframe and the K2 are related to: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

As an embodiment, the above user equipment for wireless communication is characterized in that the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

As an embodiment, the user equipment used for wireless communication described above is characterized in that the first receiver module further receives first information; the first information is used to indicate the K2, the first information being transmitted over an air interface.

The application discloses a base station device used for wireless communication, characterized by comprising:

a first transmitter module that transmits a first signaling in a target time window;

a second transceiver module that processes the first wireless signal;

As an embodiment, the above base station apparatus for wireless communication is characterized in that the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first subframe includes 12 consecutive subcarriers in a frequency domain and L2 multicarrier symbols in a time domain, the L2 is a positive integer greater than the L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

As an embodiment, the above base station apparatus used for wireless communication is characterized in that the number of RE sets included in the first subframe and the K2 are related to: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

As an embodiment, the above base station apparatus for wireless communication is characterized in that the first transmitter module further transmits first information; the first information is used to indicate the K2, the first information being transmitted over an air interface.

As an example, compared with the conventional scheme, the method has the following advantages:

the first RE set is an NCCE transmitted on a DwPTS, the K2 is a Repetition Number (Repetition Number) of an NPDCCH configured by a higher layer signaling, a target mapping criterion adopted by the first RE set is linked with the K2, and the mapping criterion of the NCCE is optimized while downlink resources of the DwPTS are fully utilized, so that NPDCCH decoding performance loss caused by puncturing of excessive REs in each NCCE is avoided.

When the K2 is smaller than a first threshold and the L1 is smaller than a second threshold, it indicates that the NPDCCH Configuration has a smaller number of repetitions and the DwPTS corresponding to the TDD Configuration (Configuration) has a smaller number of multicarrier symbols; in such a scenario, the performance of the NPDCCH depends on the performance of a single NCCE, and mapping is performed according to the first mapping criterion, so that the number of the punctured REs of at least the first NCCE in the DwPTS can be ensured to be small, which is beneficial to improving the performance; and the second mapping criterion can obtain more frequency diversity gain besides the advantage of meeting the first mapping criterion. On the contrary, when the K2 is not less than the first threshold and the L1 is not less than the second threshold, it indicates that the NPDCCH configuration has a larger number of repetitions and the DwPTS corresponding to the TDD configuration has a larger number of multicarrier symbols; in this scenario, the performance of the NPDCCH is more dependent on the repeated transmission, and mapping is performed according to the third mapping criterion, although the performance of the NCCE in the DwPTS is sacrificed due to the puncturing, all the NCCEs repeatedly transmitted can be combined in a multi-carrier symbol level, thereby simplifying the decoding complexity of the NPDCCH while ensuring the performance.

When the K2 is less than a third threshold, it indicates that the number of repetitions of NPDCCH is small; in this scenario, the performance of NPDCCH is more dependent on the performance of a single NCCE, and the number of RE sets included in the first subframe is equal to 1, that is, the first subframe includes only one NCCE, thereby ensuring that the transmission performance of the NCCE can be guaranteed even if the NCCE is punctured. In contrast, when the K2 is not less than the third threshold, the NPDCCH repetition number is larger; in this scenario, the performance of NPDCCH depends on repeated transmission, the number of RE sets included in the first subframe is equal to 2, that is, the first subframe includes two NCCEs, and the mapping criterion of FDD is used to ensure that more NCCEs are accommodated in a target time window, thereby accommodating NPDCCHs of more user equipments.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof with reference to the accompanying drawings in which:

fig. 1 shows a flow diagram of first signaling according to an embodiment of the application;

FIG. 2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

figure 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to an embodiment of the present application;

figure 4 shows a schematic diagram of an evolved node and a UE according to an embodiment of the present application;

FIG. 5 shows a flow diagram of a first wireless signal according to an embodiment of the present application;

fig. 6 shows a flow chart of a first wireless signal according to another embodiment of the present application;

FIG. 7 shows a schematic diagram of a target time window according to the present application;

FIG. 8 is a diagram illustrating K1 candidate time-frequency resources according to the present application;

FIG. 9 shows a schematic diagram of a first sub-frame according to the present application;

FIG. 10 shows a schematic diagram of a first mapping criterion according to the present application;

FIG. 11 illustrates a schematic diagram of a second mapping criterion in accordance with the present application;

FIG. 12 illustrates a schematic diagram of a third mapping criterion in accordance with the present application;

fig. 13 shows a block diagram of a processing device for use in a user equipment according to an embodiment of the present application;

fig. 14 shows a block diagram of a processing device for use in a base station according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of first signaling, as shown in fig. 1.

As a sub-embodiment, the monitoring is blind detection.

As a sub-embodiment, the monitoring determines that the candidate time-frequency resource for transmitting the first signaling is selected from the K1 candidate time-frequency resources through a Cyclic Redundancy Check (CRC) Check.

As a sub-embodiment, the K2 refers to npdcch-NumRepetitions in TS 36.213.

As a sub-embodiment, the target time window includes K3 consecutive subframes, the K3 is a positive integer greater than K2, the K3 consecutive subframes include the K2 reference subframes, only the K2 of the K3 consecutive subframes are configured for transmitting NPDCCH.

As a sub-embodiment, the K2 reference subframes include TDD Special subframes (Special subframes).

As a sub-embodiment, the K2 reference subframes are all TDD downlink Normal subframes (Normal subframes).

As a sub-embodiment, all TDD normal subframes occupied by the K1 candidate time-frequency resources in the time domain refer to: and all TDD downlink normal subframes which are occupied by the K1 candidate time frequency resources in a time domain and can be used for NB-IOT transmission.

As a subsidiary embodiment of the sub-embodiment, all TDD downlink normal subframes that can be used for NB-IOT transmission are discontinuous in the time domain.

As a sub-embodiment, all TDD normal subframes occupied by the K1 candidate time-frequency resources in the time domain refer to: and all TDD downlink normal subframes occupied by the K1 candidate time frequency resources in the time domain.

As an auxiliary embodiment of the sub-embodiment, all TDD downlink normal subframes are discontinuous in the time domain.

As a sub-embodiment, the TDD subframe occupied by the K1 candidate time-frequency resources in the time domain refers to: and all TDD downlink subframes and all TDD special subframes occupied by the K1 candidate time frequency resources in a time domain.

As a sub-embodiment, the all TDD subframes occupied by the K1 candidate time-frequency resources in the time domain refer to: and all TDD downlink subframes and part of TDD special subframes occupied by the K1 candidate time frequency resources in a time domain.

As a sub-embodiment, the duration of the target time window in the time domain refers to T in section 16.6 in TS 36.213.

As an additional embodiment of this sub-embodiment, T is equal to the product of G, which refers to G in TS 36.213, and K2, which refers to Rmax in TS 36.213, and K2.

As a sub-embodiment, the target mapping criterion is further related to a first parameter, which is the number of REs in the downlink pilot time slot that can be used for downlink narrowband transmission.

As an auxiliary embodiment of the sub-embodiment, the value of the first parameter is related to whether a PDCCH (Physical Downlink Control Channel) exists in the Downlink pilot timeslot.

As an auxiliary embodiment of the sub-embodiment, the value of the first parameter is related to whether a CRS (Cell Reference Signal) exists in the downlink pilot time slot.

As an additional embodiment of this sub-embodiment, the first parameter is smaller than a third threshold, and the target mapping criterion is the first mapping criterion in the present application or the second mapping criterion in the present application.

As an additional embodiment of this sub-embodiment, the first parameter is not less than a third threshold, and the target mapping criterion is the third mapping criterion in the present application.

As an example of the two above-mentioned subsidiary embodiments, said third threshold value is equal to 36.

As an example of the two above-mentioned subsidiary embodiments, said third threshold value is equal to 72.

As an example of the two subsidiary embodiments described above, the third threshold is equal to 84.

As a sub-embodiment, the K1 Candidate time-frequency resources are K1 candidates for the first signaling, respectively.

As an additional embodiment of this sub-embodiment, the ue performs K1 times of blind detection on the K1 candidate time-frequency resources, respectively.

As a sub-embodiment, at least one given candidate time-frequency resource exists in the K1 candidate time-frequency resources, and the time-frequency resource occupied by the given candidate time-frequency resource is a given subframe set, and the given subframe set includes at least one TDD special subframe.

As an additional embodiment of this sub-embodiment, the given candidate time-frequency resource comprises the first set of REs.

As a subsidiary embodiment of this sub-embodiment, said given set of subframes comprises said first subframe.

As a sub-embodiment, the RE set in this application is an NCCE.

As a sub-embodiment, the first subframe is a TDD special subframe, and the downlink pilot timeslot is a DwPTS included in the first subframe.

As an embodiment, the first subframe is a subframe for narrowband communication, and the frequency domain resource occupied by the subframe for narrowband communication is 12 subcarriers.

As a sub-embodiment, the first sub-frame is a sub-frame for narrowband communication, and a frequency domain resource occupied by the sub-frame for narrowband communication is not greater than 180 KHz.

As a sub-embodiment, the time-frequency Resource occupied by the first sub-frame is equal to one PRB (Physical Resource Block) pair.

As a sub-embodiment, the first sub-frame occupies 14 consecutive multi-carrier symbols in the time domain and 12 consecutive sub-carriers in the frequency domain.

As a sub-embodiment, any one of the K2 reference subframes is a subframe for narrowband communication, and a frequency domain resource occupied by the subframe for narrowband communication is 12 subcarriers.

As a sub-embodiment, any one of the K2 reference subframes is a subframe for narrowband communication, and a frequency domain resource occupied by the subframe for narrowband communication is not greater than 180 KHz.

As a sub-embodiment, the time-frequency resource occupied by any one of the K2 reference subframes is equal to one PRB pair.

As a sub-embodiment, any one of the K2 reference subframes occupies 14 consecutive multicarrier symbols in the time domain and 12 consecutive subcarriers in the frequency domain.

As a sub-embodiment, any one of the K2 reference subframes is an NB-IOT downlink subframe.

As a sub-embodiment, the L1 is equal to one of {3,6,9,10,11,12 }.

As a sub-embodiment, the coding scheme adopted by the first modulation symbol sequence is a Polar Code (Polar Code).

As a sub-embodiment, the modulation scheme adopted by the first modulation symbol sequence is QPSK (Quadrature Phase Shift key).

As a sub-embodiment, the first modulation symbol sequence used for carrying the first signaling means: a first block of bits is used to generate first signaling, which is encoded and modulated to generate the first sequence of modulation symbols.

As an auxiliary embodiment of the sub-embodiment, the number of modulation symbols included in the first modulation symbol sequence is equal to the number of REs occupied by one NCCE in the present application.

As an auxiliary embodiment of the sub-embodiment, the first bit block includes a Payload (Payload) of DCI (Downlink Control Information).

As an additional embodiment of the sub-embodiment, the first bit block includes a Payload (Payload) of DCI (Downlink Control Information) and CRC bits.

As a sub-embodiment, the Q is equal to one of {84,168 }.

As a sub-embodiment, the Q is equal to one of {72,144 }.

As a sub-embodiment, the K2 is equal to one of {1,2,4,8,16,32,64,128,256,512,1024,2048 }.

As a sub-embodiment, the bandwidth of the frequency domain resource occupied by the first signaling is not greater than 180KHz (kilohertz).

As a sub-embodiment, the radio frequency bandwidth of the user equipment is not greater than 180KHz (kilohertz).

As a sub-embodiment, the ue is an NB-IOT (Narrowband Internet of Things) terminal.

As a sub-embodiment, the Multi-Carrier symbol in the present application is one of an OFDM (Orthogonal Frequency Division Multiplexing) symbol, an SC-Carrier Frequency Division Multiplexing Access (SC-FDMA) symbol, a Filter Bank Multi-Carrier (FBMC) symbol, an OFDM symbol including a Cyclic Prefix (CP), a DFT-s-OFDM (Discrete Fourier Transform Spreading Orthogonal Frequency Division Multiplexing) symbol including a CP.

As a sub-embodiment, the assumption that the first signaling is sent in the first candidate time-frequency resource means: it is assumed that the first signaling is sent by the base station in the present application in the first candidate time-frequency resource.

As a sub-embodiment, the first RE set occupies part or all of the REs in the downlink pilot timeslot.

Example 2

Embodiment 2 illustrates a schematic diagram of a network architecture, as shown in fig. 2.

Embodiment 2 illustrates a schematic diagram of a network architecture according to the present application, as shown in fig. 2. Fig. 2 is a diagram illustrating anetwork architecture 200 of NR5G, LTE (Long-Term Evolution) and LTE-a (Long-Term Evolution Advanced) systems. The NR5G orLTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable terminology. TheEPS 200 may include one or more UEs (User Equipment) 201, NG-RANs (next generation radio access networks) 202, 5G-CNs (5G-Core networks, 5G Core networks)/EPCs (Evolved Packet cores) 210, HSS (Home Subscriber Server) 220, andinternet services 230. The EPS may interconnect with other access networks, but these entities/interfaces are not shown for simplicity. As shown, the EPS provides packet-switched services, however those skilled in the art will readily appreciate that the various concepts presented throughout this application may be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node b (gNB)203 andother gnbs 204. The gNB203 provides user and control plane protocol termination towards theUE 201. Thegnbs 203 may be connected toother gnbs 204 via an Xn interface (e.g., backhaul). The gNB203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a TRP (point of transmission reception), or some other suitable terminology. The gNB203 provides the UE201 with an access point to the 5G-CN/EPC 210. Examples of the UE201 include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a Personal Digital Assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a drone, an aircraft, a narrowband physical network device, a machine-type communication device, a terrestrial vehicle, an automobile, a wearable device, or any other similar functioning device. Those skilled in the art may also refer to UE201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. The gNB203 is connected to the 5G-CN/EPC210 through an S1/NG interface. The 5G-CN/EPC210 includes MME/AMF/UPF211, other MME (Mobility Management Entity)/AMF (Authentication Management Field)/UPF (User Plane Function) 214, S-GW (Service Gateway) 212, and P-GW (Packet data Network Gateway) 213. MME/AMF/UPF211 is a control node that handles signaling between UE201 and 5G-CN/EPC 210. In general, the MME/AMF/UPF211 provides bearer and connection management. All user IP (Internet protocol) packets are transmitted through S-GW212, and S-GW212 itself is connected to P-GW 213. The P-GW213 provides UE IP address allocation as well as other functions. The P-GW213 is connected to theinternet service 230. Theinternet service 230 includes an operator-corresponding internet protocol service, and may specifically include the internet, an intranet, an IMS (IP Multimedia Subsystem), and a PS streaming service (PSs).

As a sub-embodiment, the UE201 corresponds to the UE in the present application.

As a sub-embodiment, the gNB203 corresponds to the base station in this application.

As a sub-embodiment, the UE201 is a terminal of NB-IOT.

As a sub-embodiment, the UE201 supports NB-IOT traffic.

As a sub-embodiment, thegbb 203 supports NB-IOT traffic.

Example 3

Embodiment 3 shows a schematic diagram of an embodiment of a radio protocol architecture for the user plane and the control plane according to the present application, as shown in fig. 3.

Fig. 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane and the control plane, fig. 3 showing the radio protocol architecture for the User Equipment (UE) and the base station equipment (gNB or eNB) in three layers:layer 1,layer 2 andlayer 3. Layer 1(L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein asPHY 301. Layer 2(L2 layer) 305 is above PHY301 and is responsible for the link between the UE and the gNB throughPHY 301. In the user plane, theL2 layer 305 includes a MAC (Medium Access Control)sublayer 302, an RLC (Radio Link Control)sublayer 303, and a PDCP (Packet Data Convergence Protocol)sublayer 304, which terminate at the gNB on the network side. Although not shown, the UE may have several upper layers above theL2 layer 305, including a network layer (e.g., IP layer) that terminates at the P-GW on the network side and an application layer that terminates at the other end of the connection (e.g., far end UE, server, etc.). ThePDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. ThePDCP sublayer 304 also provides header compression for upper layer data packets to reduce radio transmission overhead, security by ciphering the data packets, and handover support for UEs between gnbs. TheRLC sublayer 303 provides segmentation and reassembly of upper layer packets, retransmission of lost packets, and reordering of packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest). TheMAC sublayer 302 provides multiplexing between logical and transport channels. TheMAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in one cell among the UEs. TheMAC sublayer 302 is also responsible for HARQ operations. In the control plane, the radio protocol architecture for the UE and the gNB is substantially the same for thephysical layer 301 and theL2 layer 305, but without the header compression function for the control plane. The Control plane also includes an RRC (Radio Resource Control)sublayer 306 in layer 3 (layer L3). TheRRC sublayer 306 is responsible for obtaining radio resources (i.e., radio bearers) and configures the lower layers using RRC signaling between the gNB and the UE.

As a sub-embodiment, the radio protocol architecture in fig. 3 is applicable to the user equipment in the present application.

As a sub-embodiment, the radio protocol architecture of fig. 3 is applicable to the base station in the present application.

As a sub-embodiment, the first signaling in this application is generated in thePHY 301.

As a sub-embodiment, the first wireless signal in the present application is generated in thePHY 301.

As a sub-embodiment, the first wireless signal in the present application is generated in theMAC sublayer 302.

As a sub-embodiment, the first information in the present application is generated in theRRC sublayer 306.

Example 4

Embodiment 4 shows a schematic diagram of a base station device and a user equipment according to the present application, as shown in fig. 4. Fig. 4 is a block diagram of a gNB410 in communication with a UE450 in an access network.

The base station apparatus (410) includes a controller/processor 440,memory 430, receiveprocessor 412, transmitprocessor 415, transmitter/receiver 416, andantenna 420.

User equipment (450) includes controller/processor 490,memory 480,data source 467, transmitprocessor 455, receiveprocessor 452, transmitter/receiver 456, andantenna 460.

In UL (Uplink) transmission, processing related to a base station apparatus (410) includes:

areceiver 416 receiving the radio frequency signal through itscorresponding antenna 420, converting the received radio frequency signal to a baseband signal, and providing the baseband signal to the receiveprocessor 412;

a receiveprocessor 412 that performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, among others;

a receiveprocessor 412 that performs various signal receive processing functions for the L1 layer (i.e., the physical layer) including multi-antenna reception, Despreading (Despreading), code division multiplexing, precoding, etc.;

a controller/processor 440 implementing L2 layer functions and associatedmemory 430 storing program codes and data;

the controller/processor 440 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover upper layer packets from theUE 450; upper layer packets from controller/processor 440 may be provided to the core network;

in UL transmission, processing related to a user equipment (450) includes:

adata source 467 that provides upper layer data packets to the controller/processor 490.Data source 467 represents all protocol layers above the L2 layer;

atransmitter 456 for transmitting a radio frequency signal via itsrespective antenna 460, converting the baseband signal into a radio frequency signal and supplying the radio frequency signal to therespective antenna 460;

a transmitprocessor 455 implementing various signal reception processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, and physical layer signaling generation, etc.;

a transmitprocessor 455 implementing various signal reception processing functions for the L1 layer (i.e., physical layer) including multi-antenna transmission, Spreading, code division multiplexing, precoding, etc.;

controller/processor 490 performs header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation of the gNB410, performs L2 layer functions for the user plane and control plane;

the controller/processor 490 is also responsible for HARQ operations, retransmission of lost packets, and signaling to thegNB 410;

in DL (Downlink) transmission, processing related to a base station apparatus (410) includes:

a controller/processor 440, upper layer packet arrival, controller/processor 440 providing packet header compression, encryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the control plane; the upper layer packet may include data or control information, such as DL-SCH (Downlink Shared Channel);

a controller/processor 440 associated with amemory 430 that stores program codes and data, thememory 430 may be a computer-readable medium;

a controller/processor 440 comprising a scheduling unit to transmit the requirements, the scheduling unit being configured to schedule air interface resources corresponding to the transmission requirements;

a transmitprocessor 415 that receives the output bit stream of the controller/processor 440, performs various signal transmission processing functions for the L1 layer (i.e., physical layer) including coding, interleaving, scrambling, modulation, power control/allocation, and physical layer control signaling (including PBCH, PDCCH, PHICH, PCFICH, reference signal) generation, etc.;

a transmitprocessor 415, receiving the output bit stream of the controller/processor 440, implementing various signal transmit processing functions for the L1 layer (i.e., physical layer) including multi-antenna transmission, spreading, code division multiplexing, precoding, etc.;

atransmitter 416 for converting the baseband signal provided by the transmitprocessor 415 into a radio frequency signal and transmitting it via anantenna 420; eachtransmitter 416 samples a respective input symbol stream to obtain a respective sampled signal stream. Eachtransmitter 416 further processes (e.g., converts to analog, amplifies, filters, upconverts, etc.) the respective sample stream to obtain a downlink signal.

In DL transmission, the processing related to the user equipment (450) may include:

areceiver 456 for converting radio frequency signals received via anantenna 460 to baseband signals for provision to the receiveprocessor 452;

a receiveprocessor 452 that performs various signal receive processing functions for the L1 layer (i.e., physical layer) including decoding, deinterleaving, descrambling, demodulation, and physical layer control signaling extraction, etc.;

a receiveprocessor 452, which performs various signal receive processing functions for the L1 layer (i.e., physical layer) including multi-antenna reception, despreading, code division multiplexing, precoding, and the like;

a controller/processor 490 receiving the bit stream output by the receiveprocessor 452, providing packet header decompression, decryption, packet segmentation concatenation and reordering, and multiplexing and demultiplexing between logical and transport channels to implement L2 layer protocols for the user plane and the control plane;

the controller/processor 490 is associated with amemory 480 that stores program codes and data.Memory 480 may be a computer-readable medium.

As a sub-embodiment, the UE450 apparatus comprises: at least one processor and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, the UE450 apparatus at least: monitoring the first signaling on K1 candidate time-frequency resources in the target time window; operating a first wireless signal if the first signaling is detected; the target time window comprises K2 reference subframes, a first candidate time-frequency resource is one of the K1 candidate time-frequency resources, and any one of the K1 candidate time-frequency resources comprises a positive integer number of RE sets; the first RE set is one RE set of positive integer RE sets included in the first candidate time frequency resource, a time domain resource occupied by the first RE set belongs to a first subframe, and the first subframe is a TDD special subframe; the first subframe comprises a downlink pilot slot comprising L1 multicarrier symbols, the L1 being a positive integer; the first set of REs comprises Q REs; a first modulation symbol sequence is used for carrying the first signaling, and the first modulation symbol sequence consists of Q modulation symbols in sequence; assuming that the first signaling is transmitted in the first candidate time-frequency resource, the Q modulation symbols are respectively mapped to the Q REs in the first subframe according to a target mapping criterion, at least one of { the target mapping criterion, the number of RE sets included in the first subframe } is related to the K2; the K2 reference subframes include all TDD normal subframes occupied by the K1 candidate time-frequency resources in a time domain, or the K2 reference subframes include all TDD subframes occupied by the K1 candidate time-frequency resources in a time domain; the first signaling is used for determining time-frequency resources occupied by the first wireless signal, and the operation is receiving or the operation is transmitting; the K1 and the K2 are both positive integers; and Q is a positive integer.

As a sub-embodiment, the UE450 includes: a memory storing a program of computer readable instructions that when executed by at least one processor result in actions comprising: monitoring the first signaling on K1 candidate time-frequency resources in the target time window; operating a first wireless signal if the first signaling is detected; the target time window comprises K2 reference subframes, a first candidate time-frequency resource is one of the K1 candidate time-frequency resources, and any one of the K1 candidate time-frequency resources comprises a positive integer number of RE sets; the first RE set is one RE set of positive integer RE sets included in the first candidate time frequency resource, a time domain resource occupied by the first RE set belongs to a first subframe, and the first subframe is a TDD special subframe; the first subframe comprises a downlink pilot slot comprising L1 multicarrier symbols, the L1 being a positive integer; the first set of REs comprises Q REs; a first modulation symbol sequence is used for carrying the first signaling, and the first modulation symbol sequence consists of Q modulation symbols in sequence; assuming that the first signaling is transmitted in the first candidate time-frequency resource, the Q modulation symbols are respectively mapped to the Q REs in the first subframe according to a target mapping criterion, at least one of { the target mapping criterion, the number of RE sets included in the first subframe } is related to the K2; the K2 reference subframes include all TDD normal subframes occupied by the K1 candidate time-frequency resources in a time domain, or the K2 reference subframes include all TDD subframes occupied by the K1 candidate time-frequency resources in a time domain; the first signaling is used for determining time-frequency resources occupied by the first wireless signal, and the operation is receiving or the operation is transmitting; the K1 and the K2 are both positive integers; and Q is a positive integer.

As a sub-embodiment, the UE450 corresponds to a user equipment in the present application.

As a sub-embodiment, the gNB410 corresponds to a base station in the present application.

As a sub-embodiment, at least the first two of thereceiver 456, receiveprocessor 452, and controller/processor 490 are used to monitor the first signaling over K1 candidate time-frequency resources in the target time window.

As a sub-embodiment, at least the first two of thereceiver 456, the receiveprocessor 452, and the controller/processor 490 are used to receive the first wireless signal.

As a sub-embodiment, at least the first two of thetransmitter 456, the transmitprocessor 455, and the controller/processor 490 are used to transmit the first wireless signal.

As a sub-embodiment, at least the first two of thereceiver 456, the receiveprocessor 452, and the controller/processor 490 are used to receive the first information.

As a sub-embodiment, at least the first two of thetransmitter 416, the transmitprocessor 415, and the controller/processor 440 are used to send the first signaling in the target time window.

As a sub-embodiment, at least the first two of thetransmitter 416, the transmitprocessor 415, and the controller/processor 440 are used to transmit the first wireless signal.

As a sub-embodiment, at least the first two of thereceiver 416, the receiveprocessor 412, and the controller/processor 440 are used to receive the first wireless signal.

As a sub-embodiment, at least the first two of thetransmitter 416, the transmitprocessor 415, and the controller/processor 440 are used to transmit the first information.

Example 5

Embodiment 5 illustrates a flow chart of a first wireless signal, as shown in fig. 5. In fig. 5, base station N1 is the serving cell maintaining base station for user equipment U2. In the figure, steps S12 and S22 inembodiment 5 can be replaced with steps S30 and S40 inembodiment 6, respectively, without conflict.

For theBase station N1Transmitting the first information in step S10; transmitting a first signaling in the target time window in step S11; the first wireless signal is transmitted in step S12.

For theUser equipment U2In step S20Receiving first information; monitoring the first signaling on K1 candidate time-frequency resources in the target time window in step S21; the first wireless signal is received in step S22.

In embodiment 5, the target time window comprises K2 reference subframes, the first candidate time-frequency resource is one of the K1 candidate time-frequency resources, and any one of the K1 candidate time-frequency resources comprises a positive integer number of RE sets; the first RE set is one RE set of positive integer RE sets included in the first candidate time frequency resource, a time domain resource occupied by the first RE set belongs to a first subframe, and the first subframe is a TDD special subframe; the first subframe comprises a downlink pilot slot comprising L1 multicarrier symbols, the L1 being a positive integer; the first set of REs comprises Q REs; a first modulation symbol sequence is used for carrying the first signaling, and the first modulation symbol sequence consists of Q modulation symbols in sequence; assuming that the first signaling is transmitted by the base station N1 in the first candidate time-frequency resource, the Q modulation symbols are respectively mapped to the Q REs in the first subframe according to a target mapping criterion, at least one of { the target mapping criterion, the number of RE sets included in the first subframe } is related to the K2; the K2 reference subframes include all TDD normal subframes occupied by the K1 candidate time-frequency resources in a time domain, or the K2 reference subframes include all TDD subframes occupied by the K1 candidate time-frequency resources in a time domain; the first signaling is used for determining time-frequency resources occupied by the first wireless signal; the K1 and the K2 are both positive integers; q is a positive integer; the first set of REs occupies some or all of the REs in the given resource block; the first information is used to indicate the K2, the first information being transmitted over an air interface.

As a sub-embodiment, the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

As a subsidiary embodiment of this sub-embodiment, said first threshold is equal to one of {1,2,4,8 }.

As a subsidiary embodiment of this sub-embodiment, said second threshold is equal to one of {6,9,10 }.

As an additional embodiment of this sub-embodiment, the second threshold is a positive integer no greater than 12.

As a subsidiary embodiment of this sub-embodiment, said first sub-frame comprises 12 consecutive sub-carriers in the frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

As a subsidiary embodiment of this sub-embodiment, said first sub-frame comprises 12 consecutive sub-carriers in the frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

As a sub-embodiment, the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

As an auxiliary embodiment of this sub-embodiment, the first sub-frame includes 12 consecutive sub-carriers in the frequency domain and L2 multi-carrier symbols in the time domain, and the L2 is a positive integer greater than the L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

As a sub-embodiment, the number of RE sets included in the first subframe and the K2 relate to: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

As a subsidiary embodiment of the sub-embodiment, the K2 is smaller than a third threshold and the L1 is larger than a fourth threshold, and the number of RE sets included in the first subframe is equal to 1.

As a subsidiary embodiment of the sub-embodiment, the K2 is less than a third threshold and the L1 is not greater than a fourth threshold, and the number of RE sets included in the first subframe is equal to 0.

As a subsidiary embodiment of the sub-embodiment, the K2 is greater than a third threshold and the L1 is greater than a fifth threshold, and the number of RE sets included in the first subframe is equal to 2.

As an exemplary embodiment of the above three subsidiary embodiments, the third threshold is a positive integer.

As an exemplary embodiment of the above three subsidiary embodiments, the third threshold is equal to one of {2,4,8,16}

As an exemplary embodiment of the above three subsidiary embodiments, the fourth threshold value is a positive integer.

As an exemplary embodiment of the above three sub-embodiments, the fourth threshold is equal to one of {3,6,9 }.

As an exemplary embodiment of the above three subsidiary embodiments, the fifth threshold is equal to one of {11,12 }.

As a subsidiary embodiment of the sub-embodiment, the number of the RE sets included in the first subframe is further related to the number of REs that can be used for transmitting downlink narrowband wireless signals in the downlink pilot time slot.

As an example of this subsidiary embodiment, the number of REs in the downlink pilot time slot that can be used for transmitting downlink narrowband wireless signals is related to whether CRS is present in the downlink pilot time slot.

As an example of this subsidiary embodiment, the number of REs that can be used for transmitting a downlink narrowband wireless signal in the downlink pilot time slot is related to whether a PDCCH is present in the downlink pilot time slot.

As an example of this subsidiary embodiment, the number of REs that can be used for transmitting downlink narrowband wireless signals in the downlink pilot time slot is smaller than a sixth threshold, and the number of RE sets included in the first subframe is equal to 0.

As a special case of this example, the sixth threshold is equal to 36.

As a sub-embodiment, the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

As an additional embodiment of this sub-embodiment, the transmission period of the first signaling is T1 ms, and the user equipment performs at most the K1 blind detections for the first signaling every T1 ms; the T1 is a positive integer.

As a subsidiary embodiment of the sub-embodiment, the K2 reference subframes are discontinuous in the time domain, the start subframe of the K2 reference subframes in the time domain is a second subframe, the truncated subframe of the K2 reference subframes in the time domain is a third subframe, and the start time of the second subframe to the truncation time of the third subframe form the target time window.

As a sub-embodiment, the air interface in the present application corresponds to the interface between the UE201 and the NR node B203 inembodiment 2.

As a sub-embodiment, the first Information includes part or all of Information in NPDCCH-ConfigDedicated-NB IEs (Information Elements) in TS 36.331.

As a sub-embodiment, the first information is RRC (Radio Resource Control) signaling.

As a sub-embodiment, the first information is specific to the user equipment U2.

As a sub-embodiment, the first signaling is a Downlink Grant (Grant), and the first wireless signal is NPDSCH (Narrowband Physical Downlink Shared Channel).

Example 6

Embodiment 6 illustrates another flow chart of the first wireless signal, as shown in fig. 6. In fig. 6, base station N3 is the serving cell maintaining base station for user equipment U4.

For theBase station N3Receiving a first wireless signal in step S30;

for theUser equipment U4Transmitting a first wireless signal in step S40;

inembodiment 6, step S30 may replace step S12 inembodiment 5, and step S40 may replace step S22 inembodiment 5.

As a sub-embodiment, the first signaling is an Uplink grant, and the first wireless signal is a NPUSCH (Narrowband Physical Uplink Shared Channel).

Example 7

Example 7 illustrates a schematic diagram of a target time window, as shown in fig. 7. In fig. 7, the target time window consists of M1 subframes, the M1 subframes include the K2 reference subframes in this application; the M1 is a positive integer greater than the K2; the M1 subframes are consecutive in the time domain.

As a sub-embodiment, any one of the M1 subframes is a subframe for narrowband communication, and a frequency domain resource occupied by the subframe for narrowband communication is 12 subcarriers.

As a sub-embodiment, any one of the M1 subframes is a subframe for narrowband communication, and a frequency domain resource occupied by the subframe for narrowband communication is not greater than 180 KHz.

As a sub-embodiment, the time-frequency resource occupied by any one of the M1 subframes is equal to one PRB pair.

As a sub-embodiment, the M1 subframes include subframes for uplink NB-IOT transmission.

As a sub-embodiment, the M1 subframes occupy the same frequency domain resources in the frequency domain.

As a sub-embodiment, at least two sub-frames exist in the M1 sub-frames, and the two sub-frames respectively occupy different frequency domain resources.

Example 8

Embodiment 8 illustrates a schematic diagram of K1 candidate time-frequency resources, as shown in fig. 8. In fig. 8, the K1 Candidate time-frequency resources are respectively for K1 candidates of the first signaling in the present application; any candidate time frequency resource in the K1 candidate time frequency resources occupies a positive integer number of RE sets in the application; the rectangular box shown in the figure corresponds to one RE set.

As a sub-embodiment, a time domain resource occupied by one RE set belongs to one sub-frame in the present application.

As a sub-embodiment, the number of RE sets included in the subframe in the present application is equal to 2 or 1.

As a sub-embodiment, the RE set in this application is an NCCE.

As a sub-embodiment, a given candidate time-frequency resource is any one of the K1 candidate time-frequency resources, the given candidate time-frequency resource comprises P RE sets, the P is related to the K2 in this application.

As a sub-embodiment of this sub-embodiment, K2 is equal to 1 and P is equal to one of {1,2 }.

As a sub-embodiment of this sub-embodiment, K2 equals 2 and P equals one of {1,2,4 }.

As a sub-embodiment of this sub-embodiment, K2 equals 2 and P equals one of {2,4,8 }.

As an auxiliary example of this sub-embodiment, when K2 is equal to or greater than 8, P is equal to one of {0.25 × K2,0.5 × K2, K2,2 × K2 }.

As a sub-embodiment, the value of K1 is related to the value of K2.

Example 9

Embodiment 9 illustrates a schematic diagram of a first subframe. In fig. 9, the first subframe includes L2 multicarrier symbols, and L1 multicarrier symbols of the L2 multicarrier symbols are used for downlink transmission; and the frequency domain resource occupied by the first subframe is equal to 180 KHz.

As a sub-embodiment, the multicarrier symbols of the L1 multicarrier symbols and other than the L2 multicarrier symbols comprise GPs.

As a sub-embodiment, a multicarrier symbol of the L1 multicarrier symbols and other than the L2 multicarrier symbols comprises UpPTS.

Example 10

Embodiment 10 illustrates a schematic diagram of a first mapping criterion, as shown in fig. 10. In fig. 10; mapping the Q modulation symbols contained in the first modulation symbol sequence to Q REs contained in a first subframe according to the sequence shown in the figure; each square lattice in the figure represents an RE, and the numbers in the square lattices correspond to the serial numbers of the mapped modulation symbols in the Q modulation symbols; the first subframe comprises 12 subcarriers in a frequency domain and L1 multicarrier symbols for downlink transmission in a time domain, wherein L1 is a positive integer less than 14; said Q is greater than (6 x L1); all the small squares shown in the figure constitute one of the downlink pilot time slots in the present application.

Example 11

Example 11 illustrates a schematic diagram of a second mapping criterion, as shown in fig. 11. In fig. 11; mapping the Q modulation symbols contained in the first modulation symbol sequence to Q REs contained in a first subframe according to the sequence shown in the figure; each square lattice in the figure represents an RE, and the numbers in the square lattices correspond to the serial numbers of the mapped modulation symbols in the Q modulation symbols; the first subframe comprises 12 subcarriers in a frequency domain and L1 multicarrier symbols for downlink transmission in a time domain, wherein L1 is a positive integer less than 14; all the small squares shown in the figure constitute one of the downlink pilot time slots in the present application.

Example 12

Example 12 illustrates a schematic diagram of a third mapping criterion, as shown in fig. 12. In fig. 12; mapping the Q modulation symbols contained in the first modulation symbol sequence to Q REs contained in a first subframe according to the sequence shown in the figure; each square lattice in the figure represents an RE, and the numbers in the square lattices correspond to the serial numbers of the mapped modulation symbols in the Q modulation symbols; the first subframe comprises 12 subcarriers in a frequency domain and L1 multicarrier symbols for downlink transmission in a time domain, wherein L1 is a positive integer less than 14; said Q is greater than (6 x L1); all the small squares shown in the figure constitute the third RE group in the present application, or all the small squares shown in the figure constitute the fourth RE group in the present application; the small squares enclosed by the bold boxes in the figure identify punctured ones of the Q modulation symbols.

As a sub-embodiment, the L2 is equal to 14.

As a sub-embodiment, the L2 is equal to 12.

Example 13

Embodiment 13 is a block diagram illustrating a processing apparatus in a UE, as shown in fig. 13. In fig. 13, theUE processing apparatus 1300 mainly comprises a first receiver module 1301 and a first transceiver module 1302.

in embodiment 13, the target time window comprises K2 reference subframes, the first candidate time-frequency resource is one of the K1 candidate time-frequency resources, and any one of the K1 candidate time-frequency resources comprises a positive integer set of REs; the first RE set is one RE set of positive integer RE sets included in the first candidate time frequency resource, a time domain resource occupied by the first RE set belongs to a first subframe, and the first subframe is a TDD special subframe; the first subframe comprises a downlink pilot slot comprising L1 multicarrier symbols, the L1 being a positive integer; the first set of REs comprises Q REs; a first modulation symbol sequence is used for carrying the first signaling, and the first modulation symbol sequence consists of Q modulation symbols in sequence; assuming that the first signaling is transmitted in the first candidate time-frequency resource, the Q modulation symbols are respectively mapped to the Q REs in the first subframe according to a target mapping criterion, at least one of { the target mapping criterion, the number of RE sets included in the first subframe } is related to the K2; the K2 reference subframes include all TDD normal subframes occupied by the K1 candidate time-frequency resources in a time domain, or the K2 reference subframes include all TDD subframes occupied by the K1 candidate time-frequency resources in a time domain; the first signaling is used for determining time-frequency resources occupied by the first wireless signal, and the operation is receiving or the operation is transmitting; the K1 and the K2 are both positive integers; and Q is a positive integer.

As one sub-embodiment, the first sub-frame includes 12 consecutive sub-carriers in the frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

As one sub-embodiment, the first sub-frame includes 12 consecutive sub-carriers in the frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

As an embodiment, the first subframe includes 12 consecutive subcarriers in the frequency domain and L2 multicarrier symbols in the time domain, the L2 is a positive integer greater than the L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

As a sub-embodiment, the first receiver module 1301 also receives first information; the first information is used to indicate the K2, the first information being transmitted over an air interface.

As a sub-embodiment, the first receiver module 1301 includes at least two of thereceiver 456, the receiveprocessor 452, and the controller/processor 490 inembodiment 4.

As a sub-embodiment, the first transceiver module 1302 includes at least the first four of the transmitter/receiver 456, the transmitprocessor 455, the receiveprocessor 452, and the controller/processor 490 ofembodiment 4.

Example 14

Embodiment 14 is a block diagram illustrating a processing apparatus in a base station device, as shown in fig. 14. In fig. 14, the base stationdevice processing apparatus 1400 is mainly composed of afirst transmitter module 1401 and a second transceiver module 1402.

Afirst transmitter module 1401 for transmitting a first signaling in a target time window;

a second transceiver module 1402 that processes the first wireless signal;

As a sub-embodiment, thefirst transmitter module 1401 also transmits first information; the first information is used to indicate the K2, the first information being transmitted over an air interface.

As a sub-embodiment, thefirst transmitter module 1401 comprises at least the first two of thetransmitter 416, thetransmission processor 415, and the controller/processor 440 ofembodiment 4.

As a sub-embodiment, the second transceiver module 1402 includes at least the first four of the receiver/transmitter 416, the transmitprocessor 415, the receiveprocessor 412, and the controller/processor 440 ofembodiment 4.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. User equipment, terminal and UE in this application include but not limited to unmanned aerial vehicle, Communication module on the unmanned aerial vehicle, remote control plane, the aircraft, small aircraft, the cell-phone, the panel computer, the notebook, vehicle-mounted Communication equipment, wireless sensor, network card, thing networking terminal, the RFID terminal, NB-IOT terminal, Machine Type Communication (MTC) terminal, eMTC (enhanced MTC) terminal, the data card, network card, vehicle-mounted Communication equipment, low-cost cell-phone, equipment such as low-cost panel computer. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, a gNB (NR node B), a TRP (Transmitter Receiver Point), and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment used for wireless communication, comprising:

operating a first wireless signal if the first signaling is detected;

2. The method of claim 1, wherein the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

3. The method of claim 1, wherein the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

4. The method of claim 2, wherein the first subframe comprises 12 consecutive subcarriers in the frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

5. The method of claim 2, wherein the first subframe comprises 12 consecutive subcarriers in the frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

6. The method of claim 3, wherein the first subframe comprises 12 consecutive subcarriers in a frequency domain and L2 multicarrier symbols in a time domain, wherein L2 is a positive integer greater than L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

7. The method according to any of claims 1-6, wherein the number of RE sets included in the first subframe related to K2 is: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

8. The method according to claim 1 or 2, wherein the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

9. The method according to claim 1 or 2, comprising:

receiving first information;

10. A method in a base station used for wireless communication, comprising:

transmitting a first signaling in a target time window;

processing the first wireless signal;

11. The method of claim 10, wherein the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

12. The method of claim 10, wherein the K2 is not less than a first threshold, or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

13. The method of claim 11, wherein the first subframe comprises 12 consecutive subcarriers in frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

14. The method of claim 11, wherein the first subframe comprises 12 consecutive subcarriers in frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

15. The method of claim 12, wherein the first subframe comprises 12 consecutive subcarriers in a frequency domain and L2 multicarrier symbols in a time domain, wherein L2 is a positive integer greater than L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

16. The method according to any of claims 10-15, wherein the number of RE sets included in the first subframe related to K2 is: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

17. The method according to claim 10 or 11, wherein the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

18. The method according to claim 10 or 11, comprising:

sending first information;

19. A user device configured for wireless communication, comprising:

20. The user equipment of claim 19, wherein the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

21. The UE of claim 19, wherein the K2 is not less than a first threshold or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

22. The UE of claim 20, wherein the first subframe comprises 12 consecutive subcarriers in the frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

23. The UE of claim 20, wherein the first subframe comprises 12 consecutive subcarriers in the frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

24. The UE of claim 21, wherein the first subframe comprises 12 consecutive subcarriers in frequency domain and L2 multicarrier symbols in time domain, and wherein L2 is a positive integer greater than L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

25. The UE of any one of claims 19 to 24, wherein the number of RE sets included in the first subframe related to K2 is: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

26. The UE of claim 19 or 20, wherein the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

27. The user equipment as claimed in claim 19 or 20, wherein the first receiver module further receives first information; wherein the first information is used to indicate the K2, the first information being transmitted over an air interface.

28. A base station device used for wireless communication, comprising:

a second transceiver module that processes the first wireless signal;

29. The base station apparatus of claim 28, wherein the K2 is less than a first threshold and the L1 is less than a second threshold; the target mapping criterion is a first mapping criterion or a second mapping criterion.

30. The base station device of claim 28, wherein the K2 is not less than a first threshold or the L1 is not less than a second threshold; the target mapping criterion is a third mapping criterion.

31. The base station apparatus of claim 29, wherein the first subframe comprises 12 consecutive subcarriers in a frequency domain; the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L1 multicarrier symbols form a first RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L1 multicarrier symbols form a second RE group; the first mapping criterion is that: the Q modulation symbols are mapped into the first RE group according to a first frequency domain mode and a second time domain mode; and then mapping to the second RE group according to a frequency domain first mode and a time domain second mode.

32. The base station apparatus of claim 29, wherein the first subframe comprises 12 consecutive subcarriers in a frequency domain; the second mapping criterion is: and the Q modulation symbols are mapped to REs included in the downlink pilot time slot according to a first frequency domain mode and a second time domain mode.

33. The base station device of claim 30, wherein the first subframe comprises 12 consecutive subcarriers in frequency domain and L2 multicarrier symbols in time domain, wherein L2 is a positive integer greater than L1; the third mapping criterion is: the 6 subcarriers with smaller central frequency points in the 12 continuous subcarriers and the L2 multicarrier symbols form a third RE group; the 6 subcarriers with higher central frequency point in the 12 continuous subcarriers and the L2 multicarrier symbols form a fourth RE group; the third mapping criterion is: the Q modulation symbols are mapped into the third RE group according to a first frequency domain mode and a second time domain mode; then mapping to the fourth RE group according to a first frequency domain mode and a second time domain mode; finally, REs on multicarrier symbols other than the L1 multicarrier symbols are punctured.

34. The base station apparatus according to any of claims 28 to 33, wherein the number of RE sets included in the first subframe related to the K2 is: the K2 is less than a third threshold, the number of RE sets included in the first subframe is equal to 1; otherwise the number of the RE sets included in the first subframe is equal to 2.

35. The base station device of claim 28 or 29, wherein the target time window is a transmission period of the first signaling; or the target time window is a time window occupied by the K2 reference subframes.

36. The base station device of claim 28 or 29, wherein the first transmitter module further transmits first information; wherein the first information is used to indicate the K2, the first information being transmitted over an air interface.