WO2022166622A1

WO2022166622A1 - Srs resource configuration method and apparatus, device and readable storage medium

Info

Publication number: WO2022166622A1
Application number: PCT/CN2022/073266
Authority: WO
Inventors: 曹昱华; 李岩; 王飞; 郑毅
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团有限公司
Priority date: 2021-02-02
Filing date: 2022-01-21
Publication date: 2022-08-11
Also published as: CN114844605A

Abstract

Provided in the present application are a sounding reference signal (SRS) resource configuration method and apparatus, a device and a readable storage medium. The method comprises: receiving downlink control information (DCI); and according to one or more bits in the DCI, indicating one or more target SRS resource sets, wherein the target SRS resource sets are subsets of a plurality of SRS resource sets configured for uplink transmission by a base station. In the embodiments of the present application, by means of providing SRS resource sets with a plurality of time domain behaviors to a terminal, the flexibility of the SRS resource sets is improved.

Description

SRS resource configuration method, apparatus, device and readable storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with the application number of 202110143726.0 and the filing date of February 2, 2021, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application in its entirety. .

technical field

Embodiments of the present application relate to the field of communications technologies, and in particular, to a sounding reference signal (Sounding Reference Signal, SRS) resource configuration method, apparatus, device, and readable storage medium.

Background technique

Referring to FIG. 1, the figure illustrates a codebook-based uplink transmission process. When the Physical Uplink Shared Channel (PUSCH) is configured as a codebook-based transmission mode, the terminal first needs to send a codebook-based uplink transmission. The usage of the SRS, that is, the sounding reference signal set (SRS resource set), is configured as a codebook. Among them, for the codebook-based uplink transmission scheme, the new radio interface (New Radio, NR) allows the base station to configure at most one SRS resource set for the UE for uplink channel estimation, and the SRS resource set can be configured with a maximum of two sounding reference signal resources ( SRS resources). The base station performs uplink channel detection according to the SRS sent by the UE, and determines the SRS resource indicator (SRS resource indicator, SRI), the number of uplink transmission layers (rank indication (RI)), and the transmission precoding matrix indicator (transmission) corresponding to the uplink transmission. precoding matrix indicator, TPMI), modulation and coding strategy (Modulation and Coding Scheme, MCS), etc., and notify the terminal of these information in downlink control information (Downlink Control Information, DCI).

Table 1: SRI indication for codebook based PUSCH transmission

Referring to FIG. 2, the figure illustrates a non-codebook-based uplink transmission process. The main difference between the non-codebook-based uplink transmission scheme and the codebook-based uplink transmission scheme is that its precoding is no longer limited to a limited set of candidates based on a fixed codebook. . And the terminal can use the SRI to determine the precoding and the number of transmission layers of the data.

In a communication system, when the PUSCH is configured as a non-codebook-based transmission mode, the terminal first needs to send an SRS for non-codebook-based uplink transmission, that is, the usage of the SRS resource set is configured as a non-codebook (non-codebook) . For the non-codebook uplink transmission scheme, the base station can configure a maximum of one SRS resource set for the terminal, including 1 to 4 SRS resources, and each SRS resource is a single port. The terminal determines the precoding of the SRS based on the downlink channel estimation, and sends the precoded SRS.

The base station indicates the SRI through the DCI, where the SRI may indicate one or more SRS resources. The number of SRS resources indicated in the SRI is the RI for PUSCH transmission, the precoding used for the SRS resources indicated in the SRI is the TPMI for PUSCH transmission, and the transmission layer of the PUSCH corresponds to the SRS resources indicated by the SRI.

Table 2: SRI indication for non-codebook PUSCH transmission, L _max =2

In the existing communication system, the base station can only configure at most one SRS resource set for the terminal for uplink transmission, which greatly limits the flexibility of the SRS resource set.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an SRS resource configuration method, apparatus, device, and readable storage medium, so as to solve the problem of poor flexibility of the SRS resource set.

A first aspect provides an SRS resource configuration method, executed by a terminal, including:

receive DCI;

According to one or more bits in the DCI, one or more target SRS resource sets are indicated, and the target SRS resource sets are a subset of multiple SRS resource sets configured by the base station for uplink transmission.

Optionally, the target SRS resource set is an SRS resource set in a subset of a set composed of multiple SRS resource sets configured by the base station for uplink transmission.

Optionally, the method further includes:

Sending the multiple SRS resource sets configured by the base station for uplink transmission.

Optionally, the method further includes:

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all periodic SRS resource sets, the SRS resource associated with the SRI in the DCI is the SRI before the receiving time of the DCI the most recent periodic SRS resource indicated;

or,

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all aperiodic SRS resource sets, the SRS resource associated with the SRI in the DCI is the closest SRI indicated by the SRI before the reference point aperiodic SRS resources, wherein the reference point is located before the DCI reception time;

or,

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all semi-persistent periodic SRS resource sets, the SRS resource associated with the SRI in the DCI is before the receiving time of the DCI The most recent semi-persistent periodic SRS resource indicated by the SRI of the SRI, the semi-persistent periodic SRS resource is not sent for the first time after the MAC CE is activated.

In a second aspect, a method for configuring SRS resources is provided, executed by a base station, including:

Sending DCI, where one or more bits in the DCI are used to indicate one or more target SRS resource sets to the terminal, where the target SRS resource set is a subset of multiple SRS resource sets configured by the base station for uplink transmission .

Optionally, the method further includes: configuring multiple SRS resource sets for uplink transmission.

In a third aspect, an apparatus for configuring SRS resources is provided, including:

a first receiving module for receiving DCI;

A determination module, configured to indicate one or more target SRS resource sets according to one or more bits in the DCI, where the target SRS resource set is a subset of multiple SRS resource sets configured by the base station for uplink transmission set.

In a fourth aspect, an apparatus for configuring SRS resources is provided, including:

The second sending module is configured to send DCI, where one or more bits in the DCI are used to indicate to the terminal one or more target SRS resource sets, where the target SRS resource sets are multiple configured by the base station for uplink transmission A subset of the SRS resource set.

In a fifth aspect, a terminal is provided, including: a processor, a memory, and a program stored on the memory and executable on the processor, the program being executed by the processor as described in the first aspect steps of the method described.

According to a sixth aspect, a base station is provided, comprising: a processor, a memory, and a program stored on the memory and executable on the processor, the program being executed by the processor to implement the second aspect steps of the method described.

In a seventh aspect, a readable storage medium is provided, and a program is stored on the readable storage medium, and when the program is executed by a processor, the steps including the method according to the first aspect or the second aspect are implemented.

In the embodiment of the present application, the flexibility of the SRS resource set is improved by configuring multiple SRS resource sets with different time domain behaviors for the terminal.

Description of drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for purposes of illustrating preferred embodiments only and are not to be considered limiting of the application. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

1 is a schematic diagram of codebook-based uplink transmission;

Fig. 2 is a schematic diagram of uplink transmission based on non-codebook;

3 is a schematic diagram of a wireless communication system to which an embodiment of the present application can be applied;

4 is one of the flowcharts of the SRS resource configuration method according to the embodiment of the present application;

FIG. 5 is the second flowchart of the SRS resource configuration method according to the embodiment of the present application;

6 is one of the schematic diagrams of the SRS resource configuration apparatus according to the embodiment of the present application;

7 is the second schematic diagram of the SRS resource configuration apparatus according to the embodiment of the present application;

8 is a schematic diagram of a terminal according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a base station according to an embodiment of the present application;

10 is one of the schematic diagrams of determining target SRS resources based on DCI according to an embodiment of the present application;

FIG. 11 is the second schematic diagram of determining target SRS resources based on DCI according to an embodiment of the present application

FIG. 12 is a third schematic diagram of determining target SRS resources based on DCI according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The term "comprising" and any variations thereof in the description and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to the explicit Those steps or units are explicitly listed, but may include other steps or units not expressly listed or inherent to the process, method, product or apparatus. In addition, the use of "and/or" in the description and the claims indicates at least one of the connected objects, such as A and/or B, indicating that there are three cases including A alone, B alone, and both A and B.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

It is worth noting that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Division Multiple Access (Code Division Multiple Access, CDMA), Time Division Multiple Access (Time Division Multiple Access, TDMA), Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6th Generation, 6G) communication system.

FIG. 3 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 31 and a network-side device 32 . The terminal 31 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 31 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), PDA, Netbook, Ultra-mobile Personal Computer (UMPC), Mobile Internet Device (MID), Wearable Device (Wearable Device) or vehicle-mounted device (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 31 . The network side device 32 may be a base station or a core network side device, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node , Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to the specified technical vocabulary. It should be noted that in the embodiments of this application Only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The embodiment of the present application provides an SRS resource configuration method, which can be applied to a single TRP scenario or a multi-TRP scenario. In a multi-TRP scenario, one TRP corresponds to one base station. Taking the Multi-TRP PUSCH repetition transmission scenario as an example, multiple base stations jointly configure multiple SRS resource sets for uplink transmission for the terminal through high-level signaling, and each base station sends the configuration of its own SRS resource set to the terminal. . After receiving the configuration of the SRS resource set sent by each base station, the terminal sends the corresponding SRS resource set to each base station respectively. Each base station negotiates to determine the base station that delivers the DCI to the terminal. After the base station that delivers the DCI to the terminal is determined, other base stations send the information of the SRS resource set configured by themselves through high-level signaling to the base station. The base station sends DCI to the terminal; one or more bits in the DCI are used to indicate one or more target SRS resource sets; the target SRS resource set is a set of multiple SRS resource sets jointly configured by multiple base stations through high-level signaling. A set of SRS resources in a subset of the constituted set. The terminal receives the DCI, and uses one or more bits in the DCI to select one or more target SRS resource sets from multiple SRS resource sets jointly configured by multiple base stations through high-layer signaling for uplink transmission.

For example, in the Multi-TRP PUSCH repetition transmission scenario, including base station 1 and base station 2, base station 1 and base station 2 jointly configure two SRS resource sets for the terminal through high-level signaling for uplink transmission, that is, Base station 1 configures set#1 for the terminal through high-layer signaling and base station 2 configures set#2 for the terminal through high-layer signaling. Base station 1 sends the configuration of set#1 to the terminal, and base station 2 sends the configuration of set#2 to the terminal. The terminal sends corresponding SRS resource sets to base station 1 and base station 2 respectively. If the base station 1 and the base station 2 negotiate for the base station 1 to deliver the DCI to the terminal, the base station 2 can send the information of set#2 configured by itself through high-layer signaling to the base station 1. Base station 1 can indicate the SRS resource set to the terminal through DCI, which may include the following situations:

In the first case, base station 1 sets 1 bit in the DCI to indicate the SRS resource set to the terminal. details as follows:

"0" indicates one target SRS resource set, that is, set#1 configured by base station 1.

"1" indicates one target SRS resource set, that is, set#2 configured by base station 2.

or,

"0" indicates one target SRS resource set, that is, set#2 configured by base station 2.

"1" indicates one target SRS resource set, that is, set#1 configured by base station 1.

In this way, the terminal performs PUSCH transmission according to the target SRS resource set indicated by the DCI.

In the second case, base station 1 sets 2 bits in the DCI to indicate the SRS resource set to the terminal. details as follows:

"00", indicating two target SRS resource sets, namely set#1 configured by base station 1 and set#2 configured by base station 2;

"01", indicating two target SRS resource sets, namely set#2 configured by base station 2 and set#1 configured by base station 1;

"10", indicating 1 target SRS resource set, that is, set#2 configured by base station 2;

"11" indicates one target SRS resource set, that is, set#1 configured by base station 1.

In the third case, assuming that the PUSCH is transmitted on K (K>1) consecutive time slots (slots), base station 1 sets 2 bits in the DCI to indicate the SRS resource set to the terminal. details as follows:

"00", indicating that the first SRS resource set in the two SRS resource sets is associated with all K consecutive slots; the first SRS resource set refers to set#1 configured by base station 1;

"01", indicating that the second SRS resource set in the two SRS resource sets is associated with all K consecutive slots; the second SRS resource set refers to set#2 configured by base station 2;

"10" indicates that both SRS resource sets are associated with K consecutive slots, as follows:

(1) If K=2, the first SRS resource set is associated with the first slot, and the second SRS resource set is associated with the second slot;

(2) If K>2 and the high-level signaling is configured with mapping pattern 1 (Mapping pattern 1), the first SRS resource set is associated with the first slot, and the second SRS resource set is associated with the second slot , the same mapping pattern continues to be applied to the remaining slots in the K consecutive slots,

(3) If K>2 and the high-level signaling is configured with mapping pattern 2 (Mapping pattern 2), the first SRS resource set is associated with the first and second slots, and the second SRS resource set is associated with the third and second slots. The fourth slot is associated, and the same mapping pattern continues to be applied to the remaining slots in the K consecutive slots;

"11" indicates that both SRS resource sets are associated with K consecutive slots, as follows:

(1) If K=2, the second SRS resource set is associated with the first slot, and the first SRS resource set is associated with the second slot,

(2) If K>2 and the high-level signaling is configured with Mapping pattern 1, the second SRS resource set is associated with the first slot, the first SRS resource set is associated with the second slot, and the same mapping pattern Continue to apply to the remaining slots in K consecutive slots,

(3) If K>2 and the high-level signaling is configured with Mapping pattern 2, the second SRS resource set is associated with the first and second slots, and the first SRS resource set is associated with the third and fourth slots The same mapping pattern continues to be applied to the remaining slots in the K consecutive slots.

In this way, the terminal performs PUSCH transmission on K consecutive slots according to the SRS resource set associated with the slot indicated by the DCI.

It should be noted that, when the terminal performs PUSCH transmission according to the SRS resource set indicated by the DCI, it needs to determine the SRS resource corresponding to the selected SRS resource set according to the SRI in the DCI.

For example, it is assumed that multiple base stations jointly configure two SRS resource sets (set#1, set#2) for the terminal through high-layer signaling for uplink transmission, wherein set#1 is configured with four resources (resource#1, resource#2, resource#3, resource#4), set#2 configures 4 resources (resource#5, resource#6, resource#7, resource#8). If the terminal selects two target SRS resource sets, namely set#1 and set#2 according to one or more bits of the DCI, the terminal further determines corresponding to the two target SRS resource sets respectively according to the two SRIs included in the DCI The SRS resource of the Indicate the SRS resources in set#2, namely {resource#7, resource#8}, in this way, the terminal uses the determined SRS resources to perform PUSCH transmission.

Referring to FIG. 4 , an embodiment of the present application provides an SRS resource configuration method, which is executed by a terminal and includes: step 401 and step 402 .

Step 401: receive DCI;

Step 402: Indicate one or more target SRS resource sets according to one or more bits in the DCI, where the target SRS resource set is a subset of multiple SRS resource sets configured by the base station for uplink transmission.

The target SRS resource set is an SRS resource set in a subset of a set composed of multiple SRS resource sets configured by the base station for uplink transmission.

The base station can configure N SRS resource sets for uplink transmission, and set n bits in the DCI to indicate a certain subset of the N SRS resource sets to the terminal.

For example, the base station can configure 2 SRS resource sets for the UE in the upper layer for uplink transmission: set#1 is periodic and set#2 is aperiodic. Then the terminal sends SRS resource set#1 and SRS resource set#2 to the base station. After receiving the SRS signal, the base station sets 1 bit in the DCI to indicate the SRS resource set to the UE.

For another example, the base station configures three SRS resource sets for the UE for uplink transmission: set#1 is periodic, set#2 and set#3 are both aperiodic, after the terminal sends SRS and the base station receives these SRS, The base station sets 2 bits in the DCI to indicate the SRS resource set to the terminal, for example, "00" means set#1, "01" means set#2, "11" means set#3; or set 1 bit , indicating periodic (set#1) or aperiodic (set#2, #3), for example, "0" means periodic (set#1), "1" means aperiodic (set#2, # 3) Alternatively, "1" indicates periodicity (set#1), and "0" indicates aperiodicity (set#2, #3).

In the embodiment of the present application, the method further includes: sending the multiple SRS resource sets (resource sets) configured by the base station for uplink transmission.

For example, the base station may configure two SRS resource sets for the UE in RRC for uplink transmission: set#1 is periodic, and set#2 is aperiodic. Then the UE sends SRS resource set#1 and SRS resource set#2 to the base station. After receiving the SRS signal, the base station sets 1 bit in the DCI to indicate the SRS resource set to the UE. In this embodiment of the present application, the method further includes one of the following:

(1) If one or more target SRS resource sets corresponding to one or more bits in the DCI are all periodic SRS resource sets, the SRS resource associated with the SRI in the DCI is the receiving time of the DCI The latest periodic SRS resource indicated by the previous SRI;

(2) If one or more target SRS resource sets corresponding to one or more bits in the DCI are all aperiodic SRS resource sets, the SRS resource associated with the SRI in the DCI is a reference point (reference point) The most recent aperiodic SRS resource indicated by the previous SRI, wherein the reference point is located before the DCI reception time, and the reference point may also be called an effective time or a processing time;

(3) If one or more target SRS resource sets corresponding to one or more bits in the DCI are all semi-persistent periodic SRS resource sets, the SRS resource associated with the SRI in the DCI is the SRS resource of the DCI The most recent semi-persistent periodic SRS resource indicated by the SRI before the reception time, the semi-persistent periodic SRS resource is not sent for the first time after the medium access control element (MAC CE) is activated.

In this embodiment of the present application, the network side device may configure two or more SRS resource sets for the terminal for codebook-based or non-codebook-based uplink transmission.

For example, a network-side equipment terminal sends a P-SRS resource set. As the channel quality changes, the base station finds that the beam channel quality corresponding to the P-SRS resource set is not good, and temporarily triggers an AP-SRS resource set for the terminal. For example, the SRS resource pointed to by the SRI in the DCI is the latest SRS resource before the terminal receives the SRI.

Referring to Figure 10, there are two possibilities as follows: at this time, whether the SRS corresponding to the SRI in the subsequent DCI is a P-SRS resource set or an AP-SRS resource set.

The first possibility: the channel quality of the beam corresponding to the AP-SRS resource set triggered by the base station is worse than that of the P-SRS. The base station hopes to continue to schedule the PUSCH according to the beam direction of the P-SRS. At this time, the SRI corresponds to the P-SRS.

The second possibility: the channel quality of the beam corresponding to the AP-SRS resource set triggered by the base station is better than that of the P-SRS. The base station hopes to schedule the PUSCH according to the beam direction of the AP-SRS. At this time, the SRI corresponds to the AP-SRS.

The base station can configure N SRS resource sets for uplink transmission, and set n bits (bits) in the DCI to indicate a certain subset of the N SRS resource sets to the terminal.

For example, the base station may configure 2 SRS resource sets for the terminal in radio resource control (Radio Resource Control, RRC) for uplink transmission: set#1 is periodic and set#2 is aperiodic. Then the terminal sends SRS resource set#1 and SRS resource set#2 to the base station. After receiving the SRS signal, the base station sets 1 bit in the DCI to indicate the SRS resource set to the terminal.

table 3:


00	set#1 set#1
11	set#2 set#2

Another example: the base station configures the terminal with 3 SRS resource sets for uplink transmission: set#1 is periodic, set#2 and set#3 are both aperiodic, after the terminal sends SRS and the base station receives these SRS, The base station sets 2 bits in the DCI to indicate the SRS resource set to the terminal.

For another example, the base station configures the terminal to send 1 P-SRS resource set. As the channel quality changes, the base station finds that the beam channel quality corresponding to the P-SRS resource set is not good, and temporarily triggers an AP-SRS resource set 1 and 1 for the terminal. AP-SRS resource set 2.

In the existing communication system, the SRS resource pointed to by the SRI is the latest SRS resource before the terminal receives the SRI. According to the received SRI, the terminal finds the nearest SRS resource as AP-SRS resource set 2.

It can be understood that the SRS resources are generally sent on the last six symbols (symbols) of the uplink time slot (UL slot), while the DCI can only be sent on the first three symbols of the downlink time slot (DL slot).

Assume that AP-SRS resource set 2 is sent in the last symbol of the UL slot, and the DCI where the SRI is located is sent in the first symbol of the next slot. Considering the time of the base station channel estimation, the SRI in the DCI cannot be determined by the base station based on the channel estimation result of AP-SRS resource set 2 at this time, see Figure 11.

Considering the channel estimation and demodulation time of the base station, define a reference point for the terminal (the reference point should be earlier than the DCI reception time), so that the terminal can find the correct SRS resource set corresponding to this SRI, see Figure 12.

If the DCI corresponds to the periodic SRS resource set, then the terminal starts from the moment of receiving the DCI, and looks forward to the nearest periodic SRS resource corresponding to the DCI as the target resource;

If the DCI corresponds to the aperiodic SRS resource set, the terminal starts from the reference point and searches forward to the nearest aperiodic SRS resource corresponding to the DCI as the target resource;

If the DCI corresponds to the semi-persistent periodic SRS resource set, the terminal starts from the moment of receiving the DCI, and searches for the nearest semi-persistent periodic SRS resource#1 corresponding to the DCI. If the SRS resource#1 is activated on the MAC CE If the SRS resource#1 is sent for the first time after the MAC CE is activated, skip this resource#1 and continue to search for the resource that meets the conditions.

In the embodiment of the present application, by configuring the terminal with multiple SRS resource sets with different time domain behaviors, the communication system can obtain better flexibility and delay, and achieve a better balance between system performance and overhead.

Referring to FIG. 5 , an embodiment of the present application provides an SRS resource configuration method, which is executed by a base station and includes: step 501 .

Step 501: Send DCI, where one or more bits in the DCI are used to indicate one or more target SRS resource sets to the terminal, where the target SRS resource sets are multiple SRS resource sets configured by the base station for uplink transmission subset of .

In the embodiment of the present application, the method further includes: configuring multiple SRS resource sets for uplink transmission.

In the embodiments of the present application, by configuring the terminal with multiple SRS resource sets with different time domain behaviors, the communication system can obtain better flexibility and delay, and achieve a better balance between system performance and overhead.

Referring to FIG. 6 , an embodiment of the present application provides an apparatus for configuring SRS resources, and the apparatus 600 includes:

a first receiving module 601, configured to receive DCI;

A determination module 602, configured to indicate one or more target SRS resource sets according to one or more bits in the DCI, where the target SRS resource set is a set of multiple SRS resource sets configured by the base station for uplink transmission Subset.

In this embodiment of the present application, the device further includes:

The first sending module is configured to send multiple SRS resource sets configured by the base station for uplink transmission.

In this embodiment of the present application, the determining module 602 is further configured to: if one or more target SRS resource sets corresponding to one or more bits in the DCI are all periodic SRS resource sets, then the SRI in the DCI is The associated SRS resource is the latest periodic SRS resource indicated by the SRI before the receiving time of the DCI; or, if one or more target SRS resource sets corresponding to one or more bits in the DCI are all aperiodic SRS resource set, the SRS resource associated with the SRI in the DCI is the latest aperiodic SRS resource indicated by the SRI before the reference point, where the reference point is located before the DCI reception time; or, if the One or more target SRS resource sets corresponding to one or more bits in the DCI are all semi-persistent periodic SRS resource sets, then the SRS resource associated with the SRI in the DCI is the SRI indication before the receiving time of the DCI The most recent semi-persistent periodic SRS resource, the semi-persistent periodic SRS resource set is not sent for the first time after the MAC CE is activated.

The apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 4 , and achieve the same technical effect. To avoid repetition, details are not repeated here.

Referring to FIG. 7 , an embodiment of the present application provides an apparatus for configuring SRS resources, and the apparatus 700 includes:

The second sending module 701 is configured to send DCI, where one or more bits in the DCI are used to indicate one or more target SRS resource sets to the terminal, where the target SRS resource sets are multiple configured by the base station for uplink A subset of the transmitted SRS resource set.

In this embodiment of the present application, the apparatus 700 further includes: a configuration module configured to configure multiple SRS resource sets for uplink transmission.

The apparatus provided in this embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 5 , and achieve the same technical effect. To avoid repetition, details are not described here.

FIG. 8 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application.

The terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810 and other components .

Those skilled in the art can understand that the terminal 800 may also include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 810 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions. The terminal structure shown in FIG. 8 does not constitute a limitation on the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in this embodiment of the present application, the input unit 804 may include a graphics processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042. Such as camera) to obtain still pictures or video image data for processing. The display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072 . The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 14072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described herein again.

In the embodiment of the present application, after receiving the downlink data from the base station, the radio frequency unit 801 processes it to the processor 810; in addition, it sends the uplink data to the base station. Generally, the radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 809 may be used to store software programs or instructions as well as various data. The memory 809 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 809 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

The processor 810 may include one or more processing units; optionally, the processor 810 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 810.

The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 4 , and achieve the same technical effect. To avoid repetition, details are not repeated here.

The embodiment of the present application also provides a base station. As shown in FIG. 9 , the base station 900 includes: an antenna 901 , a radio frequency device 902 , and a baseband device 903 . The antenna 901 is connected to the radio frequency device 902 . In the uplink direction, the radio frequency device 902 receives information through the antenna 901, and sends the received information to the baseband device 903 for processing. In the downlink direction, the baseband device 903 processes the information to be sent and sends it to the radio frequency device 902 , and the radio frequency device 902 processes the received information and sends it out through the antenna 901 .

The above-mentioned frequency band processing apparatus may be located in the baseband apparatus 903 , and the method performed by the base station in the above embodiments may be implemented in the baseband apparatus 903 . The baseband apparatus 903 includes a processor 904 and a memory 905 .

The baseband device 903 may include, for example, at least one baseband board on which a plurality of chips are arranged. As shown in FIG. 9 , one of the chips is, for example, the processor 904 and is connected to the memory 905 to call the program in the memory 905 to execute The base stations shown in the above method embodiments operate.

The baseband device 903 may further include a network interface 906 for exchanging information with the radio frequency device 902, and the interface is, for example, a common public radio interface (CPRI for short).

Specifically, the base station in the embodiment of the present invention further includes: instructions or programs stored in the memory 905 and executable on the processor 904, and the processor 904 invokes the instructions or programs in the memory 905 to execute the instructions or programs executed by the modules shown in FIG. 7 . method, and achieve the same technical effect, in order to avoid repetition, it is not repeated here.

The base station provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in FIG. 5 , and achieve the same technical effect. To avoid repetition, details are not repeated here.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the method embodiment shown in FIG. 4 or FIG. 5 is implemented. , and can achieve the same technical effect, in order to avoid repetition, it is not repeated here.

Wherein, the processor is the processor in the terminal described in the foregoing embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The steps of the method or algorithm described in conjunction with the disclosure of the present application may be implemented in a hardware manner, or may be implemented in a manner of executing software instructions on a processor. The software instructions may be composed of corresponding software modules, and the software modules may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may be carried in an ASIC. Alternatively, the ASIC may be carried in the core network interface device. Of course, the processor and the storage medium may also exist in the core network interface device as discrete components.

Those skilled in the art should appreciate that, in one or more of the above examples, the functions described in this application may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above descriptions are only specific embodiments of the present application, and are not intended to limit the The protection scope, any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present application shall be included within the protection scope of the present application.

Those skilled in the art should understand that the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The embodiments of the present application are described with reference to flowcharts and/or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

A sounding reference signal SRS resource configuration method, executed by a terminal, includes:

receiving downlink control information DCI;

According to one or more bits in the DCI, one or more target SRS resource sets are indicated, and the target SRS resource sets are a subset of multiple SRS resource sets configured by the base station for uplink transmission.
The method of claim 1, wherein,

The target SRS resource set is an SRS resource set in a subset of a set composed of multiple SRS resource sets configured by the base station for uplink transmission.
The method of claim 1, wherein the method further comprises:

Send the multiple SRS resource sets configured by the base station for uplink transmission.
The method of claim 1, wherein the method further comprises:

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all periodic SRS resource sets, the SRS resource in the DCI indicates that the SRS resource associated with the SRI is the receiving time of the DCI The latest periodic SRS resource indicated by the previous SRI;

or,

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all aperiodic SRS resource sets, the SRS resource associated with the SRI in the DCI is the closest SRI indicated by the SRI before the reference point aperiodic SRS resources, wherein the reference point is located before the DCI reception time;

or,

If one or more target SRS resource sets corresponding to one or more bits in the DCI are all semi-persistent periodic SRS resource sets, the SRS resource associated with the SRI in the DCI is before the receiving time of the DCI The most recent semi-persistent periodic SRS resource indicated by the SRI, the semi-persistent periodic SRS resource is not sent for the first time after activation.
A method for configuring SRS resources, performed by a base station, including:

Sending DCI, where one or more bits in the DCI are used to indicate one or more target SRS resource sets to the terminal, where the target SRS resource set is a subset of multiple SRS resource sets configured by the base station for uplink transmission .
The method of claim 5, wherein,

The target SRS resource set is an SRS resource set in a subset of a set composed of multiple SRS resource sets configured by the base station for uplink transmission.
The method of claim 5, wherein the method further comprises:

Configure multiple SRS resource sets for uplink transmission.
An SRS resource configuration device, comprising:

a first receiving module for receiving DCI;

A determination module, configured to indicate one or more target SRS resource sets according to one or more bits in the DCI, where the target SRS resource set is a subset of multiple SRS resource sets configured by the base station for uplink transmission set.
An SRS resource configuration device, comprising:

The second sending module is configured to send DCI, where one or more bits in the DCI are used to indicate to the terminal one or more target SRS resource sets, where the target SRS resource sets are multiple configured by the base station for uplink transmission A subset of the SRS resource set.
A terminal, comprising: a processor, a memory, and a program stored on the memory and executable on the processor, the program being executed by the processor to implement any one of claims 1 to 4 the steps of the method.
A base station, comprising: a processor, a memory, and a program stored on the memory and executable on the processor, the program being executed by the processor to implement any one of claims 5 to 7 the steps of the method.
A readable storage medium having a program stored on the readable storage medium, when the program is executed by a processor, the steps including the method according to any one of claims 1 to 7 are implemented.