CN103312444A - Method and device for sending and receiving instruction information - Google Patents

Abstract

The invention discloses a method and a device for sending and receiving instruction information; and the method comprises the steps: configuring the instruction information by a base station, wherein the instruction information is used for indicating whether a user terminal sends an aperiodic sounding reference signal (SRS) into the base station for a plurality of times; and sending the instruction information into the user terminal by the base station. According to the technical scheme, the user terminal can more effectively send the aperiodic SRS, thus saving the physical downlink control channel (PDCCH) resource, and improving the timeliness and the accuracy of channel measurement of the base station.

Description

Method and device for sending and receiving indication information

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting and receiving indication information.

Background

Uplink Physical channels of a Long Term Evolution (LTE) system include a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH). In LTE, a Physical Downlink Control Channel (PDCCH) is used to carry uplink and downlink scheduling information and uplink power control information. A base station (e-Node-B, abbreviated as eNB) may configure a User Equipment (User Equipment, abbreviated as UE) through downlink control information, or the terminal Equipment receives configuration of higher layers (higherlayers), which is also called to configure the UE through higher layer signaling. A Downlink Control Information (DCI) format (format) may be divided intoDCI formats 0, 1A, 1B, 1C, 1D, 2A, 2B, 3A, 4, and the like, wherein,

theDCI format 0 is used to indicate scheduling of a Physical Uplink Shared Channel (PUSCH) in a single antenna;

theDCI format 1, 1A, 1B, 1C, 1D is used for different transmission modes of a Physical Downlink Shared Channel (PDSCH) of a single transport block;

the DCI format 2, 2A, 2B is used for different transmission modes of downlink PDSCH space division multiplexing;

the DCI format 3, 3A is used for transmission of a Physical Uplink Control Channel (PUCCH) and a power control command of the PUSCH.

The DCI format 4 is used to indicate scheduling of a Physical Uplink Shared Channel (PUSCH) in a multi-antenna process;

the transmission block sizes of theDCI formats 0, 1A, 3, and 3A are the same, where 1 bit is used for format differentiation in theDCI formats 0 and 1A.

A Sounding Reference Signal (SRS) is a Signal between a terminal device and a base station for measuring wireless Channel Information (CSI). In a long term evolution system, a UE (user equipment) transmits an uplink SRS (sounding reference signal) on the last data symbol of a transmission subframe at regular time according to parameters such as bandwidth, frequency domain position, sequence cyclic shift, period and subframe offset indicated by an eNB (evolved node B). And the eNB judges the uplink CSI of the UE according to the received SRS, and performs operations such as frequency domain selection scheduling, closed-loop power control and the like according to the obtained CSI.

In the LTE system, the SRS sequence transmitted by the UE is a root sequenceAnd performing cyclic shift alpha in a time domain. Different SRS sequences can be obtained by performing different cyclic shifts alpha on the same root sequence, and the obtained SRS sequences are mutually orthogonal, so that the SRS sequences can be allocated to different UEs for use, and the code division multiple access between the UEs can be realized. In the LTE system, the SRS sequence defines 8 cyclic shifts α, which is given by the following formula (1):

$\mathrm{\α}=2\mathrm{\π}\frac{n_{\mathrm{SRS}}^{\mathrm{cs}}}{8}$.... formula (1)

Wherein,

indicated by 3bit signaling, 0, 1, 2, 3, 4, 5, 6 and 7, respectively. That is, under the same time-frequency resource, the UE in the cell has 8 available code resources, and the eNB may configure at most 8 UEs to simultaneously transmit the SRS on the same time-frequency resource. Equation (1) can be regarded as dividing the SRS sequence into 8 parts at equal intervals in the time domain, but since the SRS sequence length is a multiple of 12, the minimum length of the SRS sequence is 24.

In the LTE system, the frequency domain bandwidth of the SRS is configured in a tree structure. Each SRS Bandwidth configuration (SRSbandwidth configuration) corresponds to a tree structure, and the SRS Bandwidth (SRS-Bandwidth) of the highest layer (or called as the first layer) corresponds to the maximum SRS Bandwidth of the SRS Bandwidth configurationOr SRS bandwidth range. The UE calculates the SRS bandwidth according to the signaling indication of the base station, and then calculates the SRS bandwidth according to the upper layer signaling frequency domain position n sent by the eNB_RRCTo determine the initial position of the frequency domain where the SRS is transmitted. FIG. 1 is a related art allocation of different n_RRCThe UE sends SRS with a frequency domain initial position diagram, as shown in fig. 1, different n are allocated_RRCWill transmit SRS in different regions of the cell SRS bandwidth, where the UE1 is a function of n_RRCDetermining the initial position of the frequency at which the SRS is transmitted, from n, the UE2_RRCDetermining the initial position of the frequency at which the SRS is transmitted, based on n, the UE3_RRCDetermining the initial position of the frequency at which the SRS is transmitted, based on n, for the UE4_RRCThe initial position of the frequency at which the SRS is transmitted is determined 6.

The sequence used for SRS is selected from the group of demodulation pilot sequences, and when the SRS bandwidth of the UE is 4 Resource Blocks (RBs), a Computer Generated (CG) sequence with a length of 2 RBs is used; when the SRS bandwidth of the UE is greater than 4 RBs, a Zadoff-Chu sequence of a corresponding length is used.

In addition, within the same SRS bandwidth, subcarriers (sub-carriers) of the SRS are spaced apart, that is, the SRS is transmitted in a comb structure, the number of frequency combs (frequency combs) in the LTE system is 2, and a Repetition Factor (RPF) corresponding to a time domain is 2. Fig. 2 is a schematic diagram of a comb structure of an SRS in the related art, and as shown in fig. 2, when each UE transmits the SRS, only one of two frequency combs is used, and comb is 0 or comb is 1. In this way, the UE transmits the SRS using only subcarriers with even or odd frequency domain indices according to the frequency comb position indication of 1-bit upper layer signaling. This comb structure allows more UEs to transmit SRS within the same SRS bandwidth.

In the same SRS bandwidth, multiple UEs may use different cyclic shifts on the same frequency comb and then transmit SRS through code division multiplexing, or two UEs may transmit SRS through frequency division multiplexing on different frequency combs. For example, in the LTE system, a UE transmitting an SRS in a certain SRS bandwidth (4 RBs) may use 8 cyclic shifts and 2 frequency combs, so the UE has 16 resources available for transmitting the SRS in total, that is, at most 16 SRS may be transmitted simultaneously in the SRS bandwidth. Since uplink Single user Multiple Input Multiple Output (SU-MIMO) is not supported in the LTE system, the UE can only have one antenna to transmit the SRS at each time, and thus only one SRS resource is needed for one UE, and the system can multiplex 16 UEs at most simultaneously within the SRS bandwidth.

An LTE-Advanced (LTE-Advanced, abbreviated as LTE-a) system is a next-generation evolution system of the LTE system, supports SU-MIMO in uplink, and can use 4 antennas at most as uplink transmission antennas. That is, the UE may simultaneously transmit SRS on multiple antennas at the same time, and the eNB needs to estimate the state on each channel according to the SRS received on each antenna. On the basis of the original LTE format, the downlink control information format is added with format 4 for uplink MIMO transmission, and format 2C for downlink 8-antenna MIMO transmission.

In a study of the existing LTE-a Release10 (LTE-a Release 10) it was proposed: in uplink communication, non-precoded (i.e., antenna-specific) SRS should be used, while DMRS for PUSCH should be precoded. The base station can estimate the original CSI of the uplink by receiving the non-precoded SRS, but the base station cannot estimate the original CSI of the uplink by the precoded DMRS. At this time, when the UE transmits the non-precoded SRS using multiple antennas, SRS resources required by each UE are increased, which results in a decrease in the number of UEs that can be simultaneously multiplexed in the system. The UE can send the SRS by two triggering modes, namely a high-layer signaling (also called triggering through trigger type 0) or downlink control information (also called triggering through trigger type 1), the periodic SRS is triggered based on the high-layer signaling, the aperiodic SRS is triggered based on the downlink control information, although the mode of sending the SRS in an aperiodic way is added in LTE-A Release10, the utilization rate of SRS resources is improved to a certain extent, and the flexibility of resource scheduling is improved, in the future research of LTE-A Release 11(LTE-A Release 11), for users with limited power, in order to ensure the channel measurement quality, the users can only send narrowband SRS to measure a broadband channel for multiple times.

According to the current standard protocol, the downlink control information can only trigger the aperiodic SRS once, so the base station needs to send the downlink control information to the user for multiple times to enable the user to send the aperiodic SRS for multiple times, and the base station can obtain the uplink channel information by measuring the SRS. However, this method increases signaling overhead of downlink control information, and when the number of cell users is large, there may be insufficient user multiplexing capacity of the PDCCH, so that the base station cannot trigger an aperiodic SRS to the user in time, thereby affecting the overall transmission performance of the system. How the base station more effectively triggers the aperiodic SRS to the user, and the timeliness and the accuracy of channel measurement are improved is the problem to be solved.

Disclosure of Invention

The invention provides a method and a device for transmitting and receiving indication information, which are used for at least solving the problem that a user terminal cannot effectively transmit an aperiodic SRS (sounding reference signal) due to insufficient multiplexing capacity of the user terminal of a PDCCH (physical downlink control channel) in the related art.

According to an aspect of the present invention, there is provided a method of transmitting indication information.

The method for sending the indication information comprises the following steps: the base station configures indication information, wherein the indication information is used for indicating whether the user terminal sends the aperiodic SRS to the base station for multiple times; and the base station transmits the indication information to the user terminal.

Preferably, when the base station issues the indication information to the user terminal, the method further includes: and the base station triggers the user terminal to send the SRS through the downlink control information.

Preferably, the indication information is carried in downlink control information or higher layer signaling.

Preferably, the indication information includes at least one of: the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not; indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal; indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

Preferably, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS is a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS; or the times of the multiple aperiodic SRS are the times pre-configured by the high-layer signaling.

According to another aspect of the present invention, there is provided a receiving method of indication information.

The method for receiving the indication information comprises the following steps: the method comprises the steps that a user terminal receives indication information from a base station, wherein the indication information is used for indicating whether the user terminal sends multiple non-periodic measurement reference signals (SRS) to the base station or not; and the user terminal determines whether to transmit the aperiodic SRS to the base station for multiple times according to the indication information.

Preferably, when the user terminal determines whether to transmit the aperiodic SRS to the base station multiple times according to the indication information, the method further includes: and the user terminal receives downlink control information from the base station, wherein the downlink control information is used for triggering the user terminal to send the SRS.

Preferably, the indication information is carried in downlink control information or higher layer signaling.

Preferably, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS is a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS; or the times of the multiple aperiodic SRS are the times pre-configured by the high-layer signaling.

Preferably, the indication information includes at least one of: the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not; indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal; indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

Preferably, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information includes: and when the indication information for indicating whether the user terminal transmits the multiple-time aperiodic SRS is enabled indicates that the indication information is enabled, the user terminal transmits the multiple-time aperiodic SRS to the base station.

Preferably, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information includes: and when the bandwidth indicated by the indication information of the frequency hopping bandwidth is greater than the sending bandwidth of the SRS, the user terminal sends the aperiodic SRS to the base station for a plurality of times.

Preferably, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information includes: and when the indication information of the duration is a preset value, the user terminal sends the aperiodic SRS to the base station for many times.

According to still another aspect of the present invention, there is provided a transmission apparatus of indication information.

The transmission device of the indication information according to the present invention includes: a configuration module, configured to configure indication information, where the indication information is used to indicate whether a user terminal sends an aperiodic SRS to a base station multiple times; and the issuing module is used for issuing the indication information to the user terminal.

Preferably, the above apparatus further comprises: and the triggering module is used for triggering the user terminal to send the SRS through the downlink control information.

According to still another aspect of the present invention, there is provided a receiving apparatus of indication information.

The receiving device of the indication information according to the invention comprises: a first receiving module, configured to receive indication information from a base station, where the indication information is used to indicate whether a user terminal sends an aperiodic SRS to the base station multiple times; and the determining module is used for determining whether to transmit the aperiodic SRS to the base station for multiple times according to the indication information.

Preferably, the above apparatus further comprises: and a second receiving module, configured to receive downlink control information from the base station, where the downlink control information is used to trigger the ue to send an SRS.

Preferably, the determining module is configured to send the multiple aperiodic SRS to the base station when indication information indicating whether the multiple aperiodic SRS is sent by the user terminal is enabled; when the bandwidth indicated by the indication information of the frequency hopping bandwidth is larger than the sending bandwidth of the SRS, sending the aperiodic SRS to the base station for multiple times; and when the indication information of the duration is a preset value, transmitting the aperiodic SRS to the base station for multiple times.

According to the invention, the base station is adopted to issue the indication information for indicating whether the user terminal sends the aperiodic sounding reference signal SRS to the base station for a plurality of times to the user terminal, and the user terminal sends the aperiodic SRS to the base station for a plurality of times according to the indication information issued by the base station, so that the problem that the user terminal cannot effectively send the aperiodic SRS due to insufficient multiplexing capacity of the user terminal of the PDCCH in the related technology is solved, and the effects of more effectively sending the aperiodic SRS by the user terminal, saving PDCCH resources and improving the timeliness and accuracy of the base station measuring channel are achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a diagram for allocating different n according to the related art_RRCThe frequency domain initial position schematic diagram of the SRS sent by the UE;

fig. 2 is a schematic diagram of a comb structure of an SRS according to the related art;

fig. 3 is a flowchart of a method of transmitting indication information according to an embodiment of the present invention;

fig. 4 is a flowchart of a receiving method of indication information according to an embodiment of the present invention;

fig. 5 is a block diagram of a transmitting apparatus of indication information according to an embodiment of the present invention;

fig. 6 is a block diagram of a transmitting apparatus of indication information according to a preferred embodiment of the present invention;

fig. 7 is a block diagram of a configuration of a receiving apparatus of indication information according to an embodiment of the present invention; and

fig. 8 is a block diagram of a receiving apparatus of indication information according to a preferred embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 3 is a flowchart of a method for transmitting indication information according to an embodiment of the present invention. As shown in fig. 3, the method mainly includes the following processes:

step S302: the base station configures indication information, wherein the indication information is used for indicating whether the user terminal sends the aperiodic SRS to the base station for multiple times;

step S304: and the base station transmits the indication information to the user terminal.

In the related art, the user terminal cannot effectively transmit the aperiodic SRS due to insufficient user terminal multiplexing capacity of the PDCCH. By adopting the method shown in fig. 3, the base station is adopted to send the indication information for indicating whether the user terminal sends the aperiodic sounding reference signal SRS to the base station for many times to solve the problem that the user terminal cannot effectively send the aperiodic SRS due to insufficient user terminal multiplexing capacity of the PDCCH in the related technology, thereby achieving the effects of more effectively sending the aperiodic SRS by the user terminal, saving PDCCH resources and improving the timeliness and accuracy of the base station measuring channel.

Preferably, when the base station issues the indication information to the user terminal in step S304, the method may further include: and the base station triggers the user terminal to send the SRS through the downlink control information.

In a preferred implementation process, the indication information may be carried in downlink control information or higher layer signaling.

In a preferred embodiment, the indication information may be configured in downlink control information that is sent by the base station to the user terminal and used for triggering the user terminal to send the aperiodic SRS to the base station, or may be configured in the higher layer signaling alone, or may be configured in other information besides the downlink control information or the higher layer signaling.

Preferably, the indication information may include, but is not limited to, at least one of the following:

(1) the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

in the preferred embodiment, when the indication of the multiple aperiodic SRS enable indication information indicates enable, the user terminal may send multiple aperiodic SRS to the base station every time it receives a trigger signaling from the base station; when the indication of sending the multiple times of aperiodic SRS enabling indication information indicates that the aperiodic SRS is not enabled, the user terminal only sends the aperiodic SRS to the base station once every time the user terminal receives the triggering signaling from the base station.

(2) Indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal;

in the preferred embodiment, when the bandwidth indicated by the frequency hopping bandwidth indication information for indicating the user terminal to transmit the aperiodic SRS for multiple times is greater than the transmission bandwidth of the SRS, the user terminal may transmit the aperiodic SRS to the base station for multiple times every time it receives the trigger signaling from the base station; and when the bandwidth indicated by the frequency hopping bandwidth indication information for indicating the user terminal to transmit the multiple aperiodic SRS is smaller than the transmission bandwidth of the SRS, the aperiodic SRS is transmitted to the base station only once.

(3) Indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

In a preferred embodiment, when the indication information for indicating the duration of the user terminal sending the multiple aperiodic SRS is a first preset value, the user terminal can send the multiple aperiodic SRS to the base station every time the user terminal receives a trigger signaling from the base station; and when the indication information for indicating the duration of the multiple times of sending of the aperiodic SRS by the user terminal is a second preset value, the aperiodic SRS is sent to the base station only once.

It should be noted that the setting of the first preset value and the second preset value needs to be determined according to the preset number of bits. For example: if only 1 bit is used to represent the indication information of the duration, when the first preset value is 1 (or 0), the user terminal can send the aperiodic SRS to the base station for many times every time the user terminal receives the trigger signaling from the base station; and when the second preset value is 0 (or 1), transmitting the aperiodic SRS to the base station only once. Of course, 2 bits and 3 bits may also be used to represent the indication information of the duration, and the processing method is the same and will not be described herein again.

Preferably, when the user terminal transmits the aperiodic SRS to the base station multiple times, the number of times of transmitting the SRS may be determined by, but is not limited to, the following two determination methods:

in a first mode, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS can be a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS;

in the second mode, the number of times of the multiple aperiodic SRS may be a number of times preconfigured by the higher layer signaling.

Fig. 4 is a flowchart of a method of receiving indication information according to an embodiment of the present invention. As shown in fig. 4, the method mainly includes the following processes:

step S402: the method comprises the steps that a user terminal receives indication information from a base station, wherein the indication information is used for indicating whether the user terminal sends multiple non-periodic measurement reference signals (SRS) to the base station or not;

step S404: and the user terminal determines whether to transmit the aperiodic SRS to the base station for multiple times according to the indication information.

By adopting the method shown in fig. 4, the problem that the user terminal cannot effectively transmit the aperiodic SRS due to insufficient multiplexing capacity of the user terminal of the PDCCH in the related art is solved, and the effects that the user terminal more effectively transmits the aperiodic SRS, PDCCH resources are saved, and the timeliness and accuracy of the base station measurement channel are improved are achieved.

Preferably, in step S404, when the user terminal determines whether to transmit the aperiodic SRS to the base station multiple times according to the indication information, the method may further include: the user terminal receives downlink control information from the base station, wherein the downlink control information is used for triggering the user terminal to send the SRS.

In a preferred implementation process, the indication information may be carried in downlink control information or higher layer signaling.

Preferably, when the user terminal transmits the aperiodic SRS to the base station multiple times, the number of times of transmitting the SRS may be determined by, but is not limited to, the following two determination methods:

in a first mode, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS can be a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS;

in the second mode, the number of times of the multiple aperiodic SRS may be a number of times preconfigured by the higher layer signaling.

Preferably, the indication information may include, but is not limited to, at least one of the following:

(1) the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

(2) indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal;

(3) indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

Preferably, in step S404, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information may include the following operations: and when the indication information for indicating whether the user terminal transmits the multiple-time aperiodic SRS is enabled indicates that the indication information is enabled, the user terminal transmits the multiple-time aperiodic SRS to the base station.

In a preferred embodiment, the base station may trigger the ue to send the SRS through the downlink control information, and send configuration information of the SRS to the ue, where the configuration information may include: and the instruction information is used for instructing the user terminal to transmit the instruction information whether the aperiodic SRS is enabled or not for a plurality of times and the number N of times of transmitting the SRS. When the indication enabling of the multiple-time aperiodic SRS enabling indication information is sent, the user terminal can send the multiple-time aperiodic SRS to the base station every time the user terminal receives the triggering signaling from the base station once, the number of times of sending the SRS is N, and the SRS can be sent on a fixed initial frequency domain position or an initial frequency domain which is changed continuously, so that the accuracy of channel measurement is improved, and the purpose of measuring broadband channel information is realized. When the indication information of sending the multiple aperiodic SRS enabling indicates that the SRS is not enabled, the user terminal only sends the SRS once to the base station every time the user terminal receives the triggering signaling from the base station.

Preferably, in step S404, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information may include the following operations: and when the bandwidth indicated by the indication information of the frequency hopping bandwidth is greater than the sending bandwidth of the SRS, the user terminal sends the aperiodic SRS to the base station for a plurality of times.

In a preferred embodiment, the base station may trigger the ue to send the SRS through the downlink control information, and send configuration information of the SRS to the ue, where the configuration information may include: and the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling indication information and the frequency hopping bandwidth indication information. When the multiple aperiodic SRS enable indication information indicates enable, the user terminal may send multiple aperiodic SRS to the base station every time it receives a trigger signaling from the base station, and the number of sending the aperiodic SRS may be: the ratio of the frequency hopping bandwidth to the SRS transmission bandwidth or the SRS transmission times are preconfigured by high-layer signaling. When the indication information of sending the multiple aperiodic SRS enabling indicates that the aperiodic SRS is not enabled, the user terminal only sends the aperiodic SRS to the base station once every time the user terminal receives the triggering signaling from the base station.

In a preferred embodiment, the base station may trigger the ue to send the SRS through the downlink control information, and send configuration information of the SRS to the ue, where the configuration information may include: indication of frequency hopping bandwidth. When the bandwidth indicated by the hopping bandwidth indication information is greater than the SRS transmission bandwidth, the user terminal may transmit the SRS to the base station multiple times and the number of SRS transmissions may be: the ratio of the frequency hopping bandwidth to the SRS transmission bandwidth or the SRS transmission times are preconfigured by high-layer signaling. And when the bandwidth indicated by the frequency hopping bandwidth indication information is less than the SRS transmission bandwidth, the SRS is transmitted to the base station only once.

Preferably, in step S404, the determining, by the user terminal, whether to transmit the aperiodic SRS to the base station multiple times according to the indication information may include the following operations: and when the indication information of the duration is a preset value, the user terminal sends the aperiodic SRS to the base station for many times.

In a preferred embodiment, the base station may trigger the ue to send the SRS through the downlink control information, and send configuration information of the SRS to the ue, where the configuration information may include: indication of frequency hopping bandwidth and indication of duration. When the indication information of the duration is 1 (or 0), the user terminal may transmit the SRS to the base station multiple times and the number of times of transmitting the SRS may be: the ratio of the frequency hopping bandwidth to the SRS transmission bandwidth or the SRS transmission times are preconfigured by high-layer signaling. When the indication information of the duration is 0 (or 1), the SRS is transmitted to the base station only once.

Fig. 5 is a block diagram of a transmitting apparatus of indication information according to an embodiment of the present invention. As shown in fig. 5, the apparatus for transmitting the instruction information mainly includes: a configuration module 10, configured to configure indication information, where the indication information is used to indicate whether a user terminal sends an aperiodic SRS to a base station multiple times; and the issuing module 20 is configured to issue the indication information to the user terminal.

By adopting the device shown in fig. 5, the user terminal can more effectively send the non-periodic SRS, thereby saving PDCCH resources and improving the timeliness and accuracy of the base station measuring channel.

Preferably, as shown in fig. 6, the apparatus may further include: and a triggering module 30, configured to trigger the ue to send the SRS through the downlink control information.

In a preferred implementation process, the indication information may be carried in downlink control information or higher layer signaling.

Preferably, the indication information may include, but is not limited to, at least one of the following:

(1) the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

(2) indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal;

(3) indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

Preferably, when the user terminal transmits the aperiodic SRS to the base station multiple times, the number of times of transmitting the SRS may be determined by, but is not limited to, the following two determination methods:

in a first mode, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS can be a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS;

in the second mode, the number of times of the multiple aperiodic SRS may be a number of times preconfigured by the higher layer signaling.

Fig. 7 is a block diagram of a receiving apparatus of indication information according to an embodiment of the present invention. As shown in fig. 7, the receiving apparatus of the indication information mainly includes: a first receiving module 40, configured to receive indication information from a base station, where the indication information is used to indicate whether a user terminal sends an aperiodic SRS to the base station multiple times; and a determining module 50, configured to determine whether to transmit the aperiodic SRS to the base station multiple times according to the indication information.

By adopting the device shown in fig. 7, the user terminal can more effectively send the non-periodic SRS, thereby saving PDCCH resources and improving the timeliness and accuracy of the base station measuring channel.

Preferably, as shown in fig. 8, the apparatus may further include: a second receiving module 60, configured to receive downlink control information from the base station, where the downlink control information is used to trigger the ue to send an SRS.

In a preferred implementation process, the indication information may be carried in downlink control information or higher layer signaling.

Preferably, when the user terminal transmits the aperiodic SRS to the base station multiple times, the number of times of transmitting the SRS may be determined by, but is not limited to, the following two determination methods:

in a first mode, when the indication information carries indication information of a frequency hopping bandwidth, the number of times of the multiple aperiodic SRS can be a ratio of the frequency hopping bandwidth to a sending bandwidth of the SRS;

in the second mode, the number of times of the multiple aperiodic SRS may be a number of times preconfigured by the higher layer signaling.

Preferably, the indication information may include, but is not limited to, at least one of the following:

(1) the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

(2) indicating information for indicating the frequency hopping bandwidth of the non-periodic SRS sent by the user terminal;

(3) indication information for indicating a duration for which the user terminal transmits the aperiodic SRS.

Preferably, the determining module 50 is configured to send the multiple aperiodic SRS to the base station when the indication information indicating whether the multiple aperiodic SRS is sent by the user terminal is enabled; when the bandwidth indicated by the indication information for indicating the frequency hopping bandwidth of the user terminal to transmit the multiple aperiodic SRS is larger than the SRS transmission bandwidth, transmitting the multiple aperiodic SRS to the base station; and when the indication information for indicating the duration of the multiple-time aperiodic SRS transmission of the user terminal is a preset value, transmitting the multiple-time aperiodic SRS to the base station.

It should be noted that, in fig. 5 to fig. 8, a preferred working manner of combining the modules may refer to the preferred embodiment shown in fig. 3 to fig. 4, and details are not described herein again.

From the above description, it can be seen that the above embodiments achieve the following technical effects (it is to be noted that these effects are those that certain preferred embodiments can achieve): the user terminal can more effectively send the non-periodic SRS, saves PDCCH resources and improves the timeliness and the accuracy of the base station measuring channel.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (18)

1. A method for sending indication information, comprising:

the method comprises the steps that a base station configures indication information, wherein the indication information is used for indicating whether a user terminal sends multiple aperiodic Sounding Reference Signals (SRS) to the base station;

and the base station transmits the indication information to the user terminal.

2. The method of claim 1, wherein when the base station transmits the indication information to the user terminal, the method further comprises:

and the base station triggers the user terminal to send the SRS through the downlink control information.

3. The method of claim 1, wherein the indication information is carried in downlink control information or higher layer signaling.

4. The method according to any one of claims 1 to 3, wherein the indication information comprises at least one of:

the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

indication information for indicating the frequency hopping bandwidth of the user terminal to transmit the aperiodic SRS;

and the indication information is used for indicating the duration of the non-periodic SRS sent by the user terminal.

5. The method according to any one of claims 1 to 3,

when the indication information carries indication information of frequency hopping bandwidth, the frequency of the multiple aperiodic SRS is the ratio of the frequency hopping bandwidth to the sending bandwidth of the SRS; or

The times of the multiple aperiodic SRS are times of high-level signaling pre-configuration.

6. A method for receiving indication information, comprising:

a user terminal receives indication information from a base station, wherein the indication information is used for indicating whether the user terminal sends multiple aperiodic measurement reference signals (SRS) to the base station;

and the user terminal determines whether to send the multiple aperiodic SRS to the base station according to the indication information.

7. The method of claim 6, wherein when the user terminal determines whether to transmit the plurality of aperiodic SRS to the base station according to the indication information, the method further comprises:

and the user terminal receives downlink control information from the base station, wherein the downlink control information is used for triggering the user terminal to send the SRS.

8. The method of claim 6, wherein the indication information is carried in downlink control information or higher layer signaling.

9. The method according to any one of claims 6 to 8,

when the indication information carries indication information of frequency hopping bandwidth, the frequency of the multiple aperiodic SRS is the ratio of the frequency hopping bandwidth to the sending bandwidth of the SRS; or

The times of the multiple aperiodic SRS are times of high-level signaling pre-configuration.

10. The method according to any one of claims 6 to 8, wherein the indication information comprises at least one of:

the indication information is used for indicating whether the user terminal transmits the multiple aperiodic SRS enabling or not;

indication information for indicating the frequency hopping bandwidth of the user terminal to transmit the aperiodic SRS;

and the indication information is used for indicating the duration of the non-periodic SRS sent by the user terminal.

11. The method of claim 10, wherein the determining, by the ue, whether to transmit the multiple aperiodic SRS to the base station according to the indication information comprises:

and when the indication information for indicating whether the user terminal sends the multiple aperiodic SRS is enabled indicates that the multiple aperiodic SRS is enabled, the user terminal sends the multiple aperiodic SRS to the base station.

12. The method of claim 10, wherein the determining, by the ue, whether to transmit the multiple aperiodic SRS to the base station according to the indication information comprises:

and when the bandwidth indicated by the indication information of the frequency hopping bandwidth is greater than the sending bandwidth of the SRS, the user terminal sends the multiple aperiodic SRS to the base station.

13. The method of claim 10, wherein the determining, by the ue, whether to transmit the multiple aperiodic SRS to the base station according to the indication information comprises:

and when the indication information of the duration is a preset value, the user terminal sends the multiple aperiodic SRS to the base station.

14. An apparatus for transmitting indication information, comprising:

a configuration module, configured to configure indication information, where the indication information is used to indicate whether a user equipment sends multiple aperiodic sounding reference signals SRS to the base station;

and the issuing module is used for issuing the indication information to the user terminal.

15. The apparatus of claim 14, further comprising:

and the triggering module is used for triggering the user terminal to send the SRS through the downlink control information.

16. An apparatus for receiving indication information, comprising:

a first receiving module, configured to receive indication information from a base station, where the indication information is used to indicate whether a user equipment transmits multiple aperiodic sounding reference signals SRS to the base station;

a determining module, configured to determine whether to send the multiple aperiodic SRS to the base station according to the indication information.

17. The apparatus of claim 16, further comprising:

a second receiving module, configured to receive downlink control information from the base station, where the downlink control information is used to trigger the ue to send an SRS.

18. The apparatus of claim 16,

the determining module is configured to send the multiple aperiodic SRS to the base station when the indication information indicating whether the multiple aperiodic SRS is sent by the user equipment is enabled; when the bandwidth indicated by the indication information of the frequency hopping bandwidth is greater than the sending bandwidth of the SRS, sending the multiple aperiodic SRS to the base station; and when the indication information of the duration is a preset value, transmitting the multiple aperiodic SRS to the base station.

Images