WO2021164705A1 - Srs transmission method, codebook transmission method, device, terminal, and medium - Google Patents

Abstract

Disclosed in embodiments of the present disclosure are an SRS transmission method, a codebook transmission method, a device, a terminal, and a medium. The SRS transmission method comprises: acquiring a first SRS resource set for a first use and a second SRS resource set for a second use; and transmitting, to a network apparatus, a first SRS on a first target SRS resource in the first SRS resource set, and transmitting, to the network apparatus, a second SRS on an SRS source in the second SRS resource set, wherein an antenna port used to transmit the first SRS is different from an antenna port used to transmit the second SRS, such that the network apparatus acquires channel information according to the first SRS and the second SRS.

Description

SRS transmission method, codebook transmission method, device, terminal and medium

Cross-references to related applications

This disclosure claims the priority of Chinese Patent Application No. 202010109137.6 filed in China on February 21, 2020, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of communications, and in particular to an SRS transmission method, codebook transmission method, device, terminal, and medium.

Background technique

In current mobile communication systems, such as the fifth-generation (5th-generation, 5G) communication system, the configuration of Sounding Reference Signal (SRS) resources is more flexible, and one or more SRS resource sets ( SRS resource set), each SRS resource set includes at least one SRS resource.

Currently, SRS resources for antenna switching and SRS resources for codebook transmission need to be separately configured, resulting in a relatively low utilization rate of SRS resources.

Summary of the invention

The embodiments of the present disclosure provide an SRS transmission method, codebook transmission method, device, terminal, and medium to solve the problem of low SRS resource utilization.

In order to solve the above technical problems, the present disclosure is implemented as follows:

In the first aspect, embodiments of the present disclosure provide a sounding reference signal SRS transmission method, which is applied to a terminal, and the method includes:

Acquiring a first SRS resource set for the first purpose and a second SRS resource set for the second purpose;

The first SRS is sent to the network device on the first target SRS resource in the first SRS resource set, and the second SRS is sent to the network device on the SRS resource in the second SRS resource set, where The antenna port used by the first SRS is different from the antenna port used for transmitting the second SRS, so that the network device obtains channel information according to the first SRS and the second SRS.

In the second aspect, the embodiments of the present disclosure provide a method for acquiring channel information, which is applied to a network device, and the method includes:

Sending second indication information and third indication information to the terminal, the second indication information indicating a first SRS resource set used for the first purpose, and the third indication information indicating a second SRS resource set used for the second purpose ；

Receiving the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the second SRS sent on the SRS resource in the second SRS resource set, wherein the terminal The antenna port used for transmitting the first SRS is different from the antenna port used by the terminal for transmitting the second SRS;

Acquire channel information according to the first SRS and the second SRS.

In a third aspect, the embodiments of the present disclosure provide a codebook transmission method, which is applied to a terminal, and the method includes:

Send the SRS to the network device on the SRS resource in the SRS resource set used for antenna switching, so that the network device obtains the transmission precoding matrix indication TPMI and transmission precoding matrix corresponding to each SRS resource in the SRS resource set Indicate at least one of the layers corresponding to TPMI;

Receive an SRS resource indication sent by a network device, where the SRS resource indication is used to indicate a target SRS resource in the SRS resource set, a target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and the target transmission precoding matrix Indicate at least one of the layers corresponding to TPMI;

Perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI.

In a fourth aspect, the embodiments of the present disclosure provide a codebook transmission method, which is applied to a network device, and the method includes:

Receiving the SRS sent by the terminal on the SRS resource in the SRS resource set, where the SRS resource set is an SRS resource set used for antenna switching;

According to the SRS sent on the SRS resources in the SRS resource set, obtain at least one of the transmission precoding matrix indicator TPMI corresponding to each SRS resource in the SRS resource set and the number of layers corresponding to the transmission precoding matrix indicator TPMI. item:

Selecting a target SRS resource from the SRS resources in the SRS resource set;

Send an SRS resource indication to the terminal, where the SRS resource indication is used to indicate the target SRS resource, the target transmission precoding matrix indicator TPMI corresponding to the target SRS resource, and the target transmission precoding matrix indicator TPMI corresponding layer At least one of the number, so that the terminal performs coding according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers The transmission.

In a fifth aspect, the embodiments of the present disclosure provide a sounding reference signal SRS transmission device, which is applied to a terminal, and the device includes:

A resource set acquisition module, configured to acquire a first SRS resource set for the first purpose and a second SRS resource set for the second purpose;

The SRS sending module is configured to send the first SRS to the network device on the first target SRS resource in the first SRS resource set, and send the first SRS to the network device on the SRS resource in the second SRS resource set. Two SRS, wherein the antenna port used to transmit the first SRS is different from the antenna port used to transmit the second SRS, so that the network device obtains a channel according to the first SRS and the second SRS information.

In a sixth aspect, embodiments of the present disclosure provide a channel information acquisition device, which is applied to a network device, and the device includes:

The first information sending module is configured to send second indication information and third indication information to the terminal, the second indication information indicating the first SRS resource set used for the first purpose, and the third indication information indicating the first SRS resource set used for the first purpose. Second SRS resource set for two purposes;

The SRS receiving module is configured to receive the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the second SRS sent on the SRS resource in the second SRS resource set , Wherein the antenna port used by the terminal to transmit the first SRS is different from the antenna port used by the terminal to transmit the second SRS;

The channel information acquisition module is configured to acquire channel information according to the first SRS and the second SRS.

In a seventh aspect, embodiments of the present disclosure provide a codebook transmission device, which is applied to a terminal, and the device includes:

The SRS sending module is used to send SRS to the network device on the SRS resource in the SRS resource set used for antenna switching, so that the network device can obtain the transmission precoding matrix indication corresponding to each SRS resource in the SRS resource set The TPMI and the transmission precoding matrix indicate at least one of the number of layers corresponding to the TPMI;

The resource indication receiving module is configured to receive an SRS resource indication sent by a network device, where the SRS resource indication is used to indicate a target SRS resource in the SRS resource set, a target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and The target transmission precoding matrix indicates at least one of the number of layers corresponding to the TPMI;

The codebook transmission module is configured to perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI.

In an eighth aspect, embodiments of the present disclosure provide a codebook transmission device, which is applied to network equipment, and the device includes:

The SRS receiving module is configured to receive the SRS sent by the terminal on the SRS resources in the SRS resource set, where the SRS resource set is an SRS resource set used for antenna switching;

The information acquisition module is configured to acquire the transmission precoding matrix indicator TPMI corresponding to each SRS resource in the SRS resource set and the transmission precoding matrix indicator TPMI corresponding to the SRS resource in the SRS resource set according to the SRS sent on the SRS resource in the SRS resource set. At least one of the layers:

A resource selection module, configured to select a target SRS resource from the SRS resources in the SRS resource set;

The resource indication sending module is configured to send an SRS resource indication to the terminal, where the SRS resource indication is used to indicate the target SRS resource, the target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and the target transmission precoding The coding matrix indicates at least one of the number of layers corresponding to the TPMI, so that the terminal determines the number of layers corresponding to the target SRS resource, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI. At least one item of the codebook transmission.

In a ninth aspect, the embodiments of the present disclosure provide an electronic device, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps of the sounding reference signal SRS transmission method, the steps of the channel information acquisition method, or the steps of the codebook transmission method.

In a tenth aspect, the embodiments of the present disclosure provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for transmitting the sounding reference signal SRS are realized, The steps of the channel information acquisition method or the codebook transmission method.

In the embodiment of the present disclosure, the SRS resource of the first purpose can be used for the second purpose, which realizes the multiplexing of the SRS resource, saves a part of the SRS resource, and improves the utilization rate of the SRS resource.

Description of the drawings

FIG. 1 shows a schematic diagram of an embodiment of interaction between a terminal and a network device provided by the present disclosure;

FIG. 2 shows a schematic diagram of an embodiment of the relationship between the antenna port and the antenna provided by the present disclosure;

FIG. 3 shows a schematic diagram of an embodiment of antenna switching provided by the present disclosure;

FIG. 4 shows a schematic diagram of an embodiment of antenna virtualization provided by the present disclosure;

FIG. 5 shows a schematic diagram of an embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 6 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 7 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 8 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 9 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

Fig. 10 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 11 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 12 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 13 shows a schematic diagram of another embodiment in which resources transmitted by codebooks provided by the present disclosure are used for antenna switching;

FIG. 14 shows a schematic diagram of another embodiment in which resources transmitted by codebooks provided by the present disclosure are used for antenna switching;

FIG. 15 shows a schematic diagram of another embodiment in which resources transmitted by codebooks provided by the present disclosure are used for antenna switching;

FIG. 16 shows a schematic diagram of another embodiment in which resources transmitted by codebooks provided by the present disclosure are used for antenna switching;

FIG. 17 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 18 shows a schematic diagram of another embodiment in which codebook transmission resources provided by the present disclosure are used for antenna switching;

FIG. 19 shows a schematic diagram of an embodiment of interaction between a terminal and a network device provided by the present disclosure;

FIG. 20 shows a schematic structural diagram of an embodiment of an apparatus for transmitting a sounding reference signal SRS provided by the present disclosure;

FIG. 21 shows a schematic structural diagram of an embodiment of a channel information acquisition device provided by the present disclosure;

FIG. 22 shows a schematic structural diagram of an embodiment of a codebook transmission apparatus provided in the seventh aspect of the present disclosure;

FIG. 23 shows a schematic structural diagram of an embodiment of a codebook transmission device provided in the eighth aspect of the present disclosure;

FIG. 24 shows a schematic diagram of the hardware structure of an embodiment of the electronic device provided by the present disclosure.

Detailed ways

The following describes the embodiments of the present disclosure clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In related technologies, the Sounding Reference Signal (SRS) resource set supports only one usage. For example, the SRS Resource Set (SRS Resource Set) can be used for beam management, codebook transmission, and non-codebook (noncodebook) transmission or antenna switching (antenna switching). The usage of codebook, noncodebook and antenna switching will be explained separately below.

1. How to use codebook

1. A network device (such as a base station) obtains an uplink transmission precoding matrix indicator (Transmit Precoding Matrix Indicator, TPMI) by measuring the uplink SRS, and instructs it to the terminal. Make the terminal perform uplink physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) precoding (precodering) transmission.

2. If the SRS resource indicator (SRI) in the physical downlink control channel (PDCCH) is on the time slot (slot) n, then the SRS resource indicated by the SRI refers to the one that carries the SRI The most recently transmitted SRS resource before the PDCCH.

3. When the terminal is performing codebook, the terminal has the following limitations:

1) If the SRS resource set is used in the codebook, the terminal (such as user equipment, UE) is configured with at least one SRS resource;

2) The terminal capability report supports partial coherent and non-coherent (partialAndNonCoherent), and the codebook subset (codebookSubset) cannot be configured as fully coherent, partially coherent and non-coherent (fullyAndPartialAndNonCoherent).

3) The terminal capability report supports non-coherent (nonCoherent), and the codebook Subset cannot be configured as fully coherent, partially coherent and non-coherent (fullyAndPartialAndNonCoherent).

4) If the SRS resource set is used for codebook transmission, and the parameter nrofSRS-Ports in the SRS resource set indicates 2 ports, the codebook subset (codebookSubset) should not be configured as partially coherent and non-coherent (partialAndNonCoherent); this is because of the two The port is either coherent or noncoherent.

5) The network device can configure the terminal with at most one SRS resource set (SRS resource set) acquired based on uplink transmission channel state information (CSI), and each SRS resource set contains at most two SRS resources. The number of ports included in the two SRS resources is the same, which are the same as 1, 2, and 4 ports; the SRI indicates to select one of the SRS resources.

4. The resource type (resourceType) in the SRS resource set must be consistent with the resource type (resourceType) in the SRS resource.

Among them, Table 1 shows that the SRI indication is used for codebook-based PUSCH transmission (SRI indication for codebook based PUSCH transmission):

Table 1

2. How to use noncodebook

1. The network equipment is not based on a fixed set of codebooks, but the terminal determines the uplink precoding matrix based on the channel reciprocity;

2. The network equipment can most configure each SRS resource set to include y resources, and y needs to be less than or equal to the terminal's reporting capability;

3. If the SRI in the PDCCH is on time slot n, the SRS resource indicated by the SRI refers to the most recently transmitted SRS resource before the PDCCH carrying the SRI.

4. When the terminal performs noncodebook transmission, the terminal has the following limitations:

1) During DCI 0-1 scheduling, configure at least one SRS resource in the SRS resource set;

2) Only supports a single port for each SRS resource;

3) In the case that the codebook Subset is a non-codebook (noncodebook), only one SRS resource set is supported;

4) In the case that the codebook Subset is a non-codebook (noncodebook), a maximum of one SRS resource set including 4 SRS resources is supported;

5) Multiple SRS resources in one SRS resource set occupy the same RB (Resource Block, RB);

6) It does not support the simultaneous configuration of SRS resource spatial related information (spatialRelationInfo) and the configuration of associated CSI reference signals (CSI Reference Signal, CSI-RS) in the SRS resource set. Among them, the associated CSI-RS only refers to periodic and semi-persistent; the purpose is to prevent having two spatial related information (spatialRelationInfo) in one SRS resource set. If this happens during network scheduling, it belongs to the terminal implementation, and no operation is performed or one is selected.

3. The following describes the associated CSI-RS resources based on the non-codebook SRS resource set:

1. The terminal obtains uplink precoding information according to the downlink reference signal based on the channel reciprocity

1) Allow the network device to configure an associated non-zero power CSI-RS (Non-Zero Power CSI-RS, NZP CSI-RS) resource for channel measurement for the SRS resource set used for the non-codebook uplink transmission scheme.

2) Only one associated NZP CSI-RS resource is supported in the SRS resource set. Among them, a terminal can be configured with multiple CSI-RSs for different purposes, including beam management (BM), channel state information (CSI), channel measurement (CM), etc. , CM reference signal is used here. And the resource type of the associated CSI-RS is not limited, that is, the terminal obtains the precoding of the SRS signal transmission for the SRS resource set of the non-codebook uplink transmission scheme based on the associated NZP CSI-RS resource.

2. SRS resource set is associated with aperiodic NZP CSI-RS

1) The associated NZP CSI-RS resource ID is indicated by the high-level parameter CSI-RS;

2) In order to ensure that the terminal uses the associated NZP-CSI-RS resources to determine the processing time required for the transmitted precoding, it is used to calculate the associated NZP of the SRS precoding, the last symbol of the CSI-RS transmission and the first symbol of the SRS transmission. The time interval between symbols should not be less than 42 Orthogonal Frequency Division Multiplexing (OFDM) symbols;

3) In order to avoid the complexity of terminal storage and processing, and minimize the delay between SRS transmission and SRS triggering, it is stipulated that the associated aperiodic NZP CSI-RS is sent on the time slot that triggers the SRS resource set;

4) Only when the scheduled DCI is not used for cross-carrier or cross-bandwidth part (Bandwidth Part, BWP) scheduling (cross carrier or cross bandwidth part).

3. The SRS resource set is periodic or semi-continuous

The associated NZP CSI-RS resource ID is indicated by the high-level parameter association CSI-RS.

4. Antenna switching method (used for TDD reciprocity, downlink channel acquisition)

1. The network equipment obtains downlink channel information by measuring the uplink SRS sent on the SRS resource for downlink PDSCH precodering transmission; wherein the number of ports in the SRS resource is consistent with the number of terminal antenna ports (tx).

2. The purpose of the SRS resource set is antenna switching (usage=antennaSwitching)

3. The network equipment reports according to the capabilities of the terminal, and configures a type of antenna switching for the terminal. Specifically, there are the following types of antenna switching:

't1r2'for 1T2R,'t2r4'for 2T4R,'t1r4'for 1T4R,'t1r4-t2r4'for 1T4R/2T4R,'t1r1'for 1T=1R,'t2r2'for 2T=2R, or't4r4'for 2R = 4R. Among them, xTyR means that the terminal supports x antenna ports for uplink transmission and y antenna ports for downlink reception.

Among them, the method of capability reporting also increases the capability of the terminal. And support the reduction of terminal capabilities.

The configuration of SRS resource sets for several terminal capabilities will be described in detail below:

1) The terminal supports 1T2R

The network device configures a maximum of 2 SRS resource sets for terminals that support 1T2R, and each SRS resource set has a different resource type (resourceType), that is, a different period; the combination is periodic/semi-persistent + aperiodic.

Among them, each SRS resource set is configured with 2 SRS resources, and each SRS resource includes 1 port. In an SRS resource set, each SRS resource needs to be transmitted on a different symbol. In an SRS resource set, the terminal uses different antenna ports (physical antennas) to transmit different SRS resources; that is, each port in the SRS resource corresponds to a different physical antenna (the physical antenna can be a virtual physical antenna, such as A panel in FR2).

2) The terminal supports 2T4R

The network device configures a maximum of 2 SRS resource sets for terminals that support 2T4R, and each SRS resource set has a different resource type (resourceType), that is, the period is different, and the combination is periodic/semi-persistent + aperiodic.

Two SRS resources are configured in each SRS resource set. Among them, in an SRS resource set, each SRS resource contains 2 ports; in an SRS resource set, each SRS resource needs to be transmitted on a different symbol; in an SRS resource set, one resource consists of two terminal antenna ports ( The physical antenna is transmitted, and the other resource is transmitted from the other two terminal antenna ports (physical antennas); each SRS resource corresponds to two different physical antennas; each port in the SRS resource corresponds to a different physical antenna.

3) The terminal supports 1T4R

The network device configures 0 or 1 SRS resource set for the terminal that supports 1T4R, and the resource type only supports periodic or semi-persistent. Configuring 0 SRS resource sets means that the network device does not instruct the terminal to enable the configuration.

For 1T2R and 2T4R, a maximum of 2 SRS resource sets are configured, including 0 SRS resource sets, but the combination of periodic/semi-persistent/aperiodic SRS resource sets is not limited.

For 1T4R, only one SRS resource set can be configured for periodic/semi-continuous mandatory. Configure 4 SRS resources, each SRS resource contains 1 port; each SRS resource needs to be transmitted on a different symbol; the terminal uses different antenna ports (physical antennas) to transmit different SRS resources; that is, each SRS resource The port corresponds to a different physical antenna.

4) The terminal supports 1T4R

The network equipment configures 0 or 2 SRS resource sets for terminals that support 1T4R. Among them, the resource type (resourceType) only supports aperiodic; either it does not support or it is mandatory to configure 2 aperiodic SRS resource sets, that is, at this time, no Support 1 aperiodic SRS resource set.

Two SRS resource sets are configured with a total of 4 SRS resources, of which, each SRS resource contains 1 port; the SRS resources configured in the two SRS resource sets are 2+2 or 1+3 or 3+1; two SRS resources The values of alpha, p0, pathloss reference signal (pathlossReferenceRS) and SRS power control adjustment state (srs-PowerControlAdjustmentStates) of the resource set are consistent.

Among them, two SRS resource sets are triggered by one DCI at the same time. Each SRS resource set needs to be transmitted on two different time slots.

The aperiodic explanation is as follows: currently only supports SRS transmission on the last 6 symbols; if it supports transmission on 14 symbols, the restriction on this different time slot can be removed; all SRS in the aperiodic SRS resource set The time slot offset of the resource is configured at the level of the SRS resource set, that is, the SRS resources in the SRS resource set are all in the same time slot; therefore, it is necessary to ensure the GP for antenna switching, and 6 symbols cannot be put down at once. There are two SRS resources, so it is necessary to force two SRS resource sets, and the two SRS resource sets are on different time slots.

The following is an explanation of periodicity and semi-continuous: there is no such requirement because the offset of resources in the SRS resource set at this time is configured by the resource level, that is, each SRS resource in the SRS resource set is different, even if An SRS resource set contains 4 SRS resources, and all of them can meet the GP requirement by considering the slot offset of the SRS resource level. Among them, the SRS resources in one SRS resource set need to be transmitted on two different symbols. Each SRS resource in the two SRS resource sets is associated with an antenna port of a different terminal.

5) Terminals that support 1T1R/2T2R/4T4R

The network device is configured with 2 SRS resource sets at most, usually the combination is periodic/semi-continuous + aperiodic. In fact, in this case, the antenna is not switched, but the transmission is normal, but this part is added for completeness.

Each SRS resource set is configured with one SRS resource, and the number of SRS ports in each SRS resource is equal to 1/2/4, which is equal to the number of transmitting antennas.

4. Guard period of Y symbols (guard period of Y symbols)

The guard period (GP) refers to the time between SRS resources in an SRS resource set. For the configured GP, the terminal only transmits SRS, that is, no other signals are allowed to be transmitted between the two resources. At this time, the SRS resources in one SRS resource set are transmitted in the same time slot. The rules between different time slots are determined by ran4.

5. Terminal capability report t1r4-t2r4

The terminal expects that the number of ports of all SRS resources in the SRS resource set is the same as 1 for t1r4, and the same is 2 for t2r4. For the sake of completeness, the rule defined in the previous terminal capability report is under t1r4 or t2r4 to further clarify the situation of t1r4-t2r4 to prevent one SRS resource from configuring 1 port and the other SRS resource from configuring 2 ports.

6. Terminal capabilities report't1r2','t2r4','t1r4','t1r4-t2r4'

When the usage of the SRS resource set is antenna switching, the terminal does not expect to be configured or activated for more than one SRS resource set in the same time slot. Configured refers to periodic or semi-continuous; activated refers to non-periodic; when the protocol describes t12r, etc., only the SRS resource set supports a maximum of two, but some do not clearly specify the combination of time domain behavior. Through this sentence, the collocation of time domain behavior is described. That is, in the same time slot, there are at most 1 periodic/semi-continuous + 1 non-periodic.

Among them, 1t4r non-periodically supports two SRS resource sets. However, the two SRS resource sets are not in the same time slot, so this condition is also satisfied.

7. The terminal capability reports't1r1' or't2r2' or't4r4'

When the usage of the SRS resource set is antenna switching, the terminal does not expect to be configured or activated with more than one SRS resource set on the same symbol. Being configured refers to periodic or semi-continuous; being activated refers to non-periodic.

Among them, here is the same symbol, because 1t, 2t, and 4t correspond to supporting only 1 SRS resource, and the SRS resource includes 1 port, 2 port, and 4 port, respectively. That is, the SRS resource set is just one symbol.

Under the above background, the present disclosure provides a schematic diagram of interaction between a terminal and a network device used in an SRS transmission method and channel information acquisition method according to an embodiment. As shown in Figure 1, the interaction between the terminal and the network device includes:

S101. The terminal acquires a first SRS resource set used for a first purpose and a second SRS resource set used for a second purpose.

Wherein, the number of the first SRS resource set may be one. The number of the second SRS resource set may be one or more. For example, the terminal supports 1T4R, and the network device configures aperiodic two second SRS resource sets for antenna switching for the terminal. The two second SRS resource sets are used for one antenna switching at the same time.

Optionally, referring to Figure 1, the interaction between the terminal and the network device may also include:

S102. The terminal sends a first SRS to the network device on the first target SRS resource in the first SRS resource set, and sends a second SRS to the network device on the SRS resource in the second SRS resource set, where the first SRS is sent The antenna port used is different from the antenna port used to transmit the second SRS.

Correspondingly, the network device receives the first SRS sent by the terminal on the first target SRS resource, and the second SRS sent on the SRS resource in the second SRS resource set.

Optionally, referring to Figure 1, the interaction between the terminal and the network device may also include:

S103: The network device obtains channel information according to the first SRS and the second SRS.

In the embodiment of the present disclosure, the SRS resource of the first purpose can be used for the second purpose, which realizes the multiplexing of the SRS resource, saves a part of the SRS resource, and improves the utilization rate of the SRS resource.

The antenna port in the embodiments of the present disclosure may be understood as a transmitting antenna, a receiving antenna, a physical antenna, or an antenna after virtualization. The antenna after the antenna switch is understood as a different transmitting or receiving antenna.

Referring to Figure 2, the terminal capability supports 2t2r, and the two antennas can be used as receiving antennas or transmitting antennas, and they are different physical antennas.

2t4r only supports two antennas that can be used as receiving antennas or transmitting antennas, and the remaining antennas can only be used as receiving antennas. As shown in Figure 3, before antenna switching, antenna 0 and antenna 1 can be used for reception or transmission, and antenna 2 and antenna 3 can only be used for reception. After antenna switching, antenna 0 and antenna 1 can only receive, and antenna 2 and antenna 3 can receive or transmit. That is, for transmission, it is also understood as having 4 antenna ports.

For antenna virtualization, as shown in Figure 4, physical antennas 0 and 1 are virtualized into antenna port 0, and physical antennas 2 and 3 are virtualized into antenna port 1.

In one or more embodiments of the present disclosure, the first use may include at least one of codebook transmission, non-codebook transmission, and beam management.

In one or more embodiments of the present disclosure, the second use may include antenna switching; the acquisition of channel information in S103 includes acquisition of downlink channel information.

In S103, the network device may obtain downlink channel information through the reciprocity of the uplink and downlink channels according to the first SRS and the second SRS. The downlink channel information can be used to estimate the codebook index (Precodering matrix index, TMI).

In the embodiment of the present disclosure, for the SRS resource used for at least one of codebook transmission, non-codebook transmission, and beam management, the SRS resource can be used for antenna switching, which realizes the multiplexing of the SRS resource and saves a part The SRS resource for antenna switching improves the utilization rate of the SRS resource.

In one or more embodiments of the present disclosure, the first target SRS resource may be: the Mth SRS resource used for the first purpose from the second target SRS resource onwards, where the second target SRS resource is For one SRS resource in a second SRS resource set, M is less than or equal to the first predetermined value, and M is a positive integer.

In one or more embodiments of the present disclosure, the first target SRS resource may be: an SRS resource that is closest to the second target SRS resource and used for the first purpose. That is, M=1.

For example, the first target SRS resource is the first SRS resource used for at least one of codebook transmission, non-codebook transmission, and beam management starting from the second target SRS resource.

In one or more embodiments of the present disclosure, the second target SRS resource may be the first SRS resource in the first second SRS resource set in the time domain.

The following describes the embodiments of the present disclosure through specific examples.

Assuming that the first SRS resource set is an SRS resource set used for codebook transmission, the terminal can use the first target SRS resource in the SRS resource set used for codebook transmission to perform antenna switching, so that the network device can obtain downlink channel information .

Based on the above assumption, in an example, the terminal's capability is to support 1t2r, that is, the terminal includes one antenna port for uplink transmission and two antenna ports for downlink reception. x=1, y=2, z=y/x=2.

The network device is configured with an SRS resource set periodically used for codebook transmission, and the SRS resource in the SRS resource set includes one SRS port.

The aperiodic SRS resource configured by the network device for antenna switching includes one SRS resource, and the SRS resource includes one SRS port. a=1<z.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 5, the terminal sends the SRS to the network device on the SRS resource 201 in the SRS resource set used for codebook transmission, and sends the SRS to the network device on the SRS resource 202 in the SRS resource set used for antenna switching.

The antenna port used by the terminal to send the SRS on the SRS resource 201 (that is, antenna port 0) is different from the antenna port used for sending the SRS on the SRS resource 202 (that is, antenna port 1). The SRS resource 201 and the SRS resource 202 are a complete antenna switching resource. The terminal does not expect to be configured with SRS resources for other purposes in a complete antenna switching resource. The SRS resource 201 is not only used for codebook transmission, but also used for antenna switching. Therefore, the SRS resource 201 is a resource for resource multiplexing.

The SRS resource 201 is the SRS resource that precedes the SRS resource 202 and is closest to the SRS resource 202 in the SRS resource set used for codebook transmission.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 201 and the SRS resource 202, and obtains downlink channel information based on the SRS respectively sent on the SRS resource 201 and the SRS resource 202 through the reciprocity of the uplink and downlink channels.

In another example, the capability of the terminal is to support 1t4r, that is, the terminal includes 1 antenna port for uplink transmission and 4 antenna ports for downlink reception. x=1, y=4, z=y/x=4.

The network device is configured with an SRS resource set periodically used for codebook transmission, and the SRS resource in the SRS resource set includes one SRS port.

One SRS resource set configured aperiodicly by the network device for antenna switching includes 3 SRS resources, and one SRS resource includes 1 SRS port. a=3<z.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 6, the terminal sends the SRS to the network device on the SRS resource 203 in the SRS resource set used for codebook transmission, and the SRS resource 204, SRS resource 205, and SRS resource 206 in the SRS resource set used for antenna switching. The SRS is sent to the network device.

Wherein, the antenna port used by the terminal to send the SRS on the SRS resource 203 is different from the antenna port used for sending the SRS on any SRS resource switched by the antenna. That is, the antenna port used by the terminal to send SRS on the SRS resource 203 (that is, antenna port 0) is different from the following ports: the antenna port used for sending SRS on the SRS resource 204 (that is, antenna port 1), The antenna port used for sending the SRS on the 205 (that is, antenna port 2), and the antenna port used for sending the SRS on the SRS resource 206 (that is, the antenna port 3). SRS resource 203 to SRS resource 206 are a complete antenna switching resource.

The SRS resource 203 is the SRS resource that precedes the SRS resource 204 and is closest to the SRS resource 204 in the SRS resource set used for codebook transmission. The SRS resource 204 is the first SRS resource in the SRS resource set used for antenna switching.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 203 to the SRS resource 206, and obtains the downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS respectively sent on the SRS resource 203 to the SRS resource 206.

In another example, the capability of the terminal is to support 1t4r, that is, the terminal includes 1 antenna port for uplink transmission and 4 antenna ports for downlink reception. x=1, y=4, z=y/x=4.

The network device is configured with an SRS resource set periodically used for codebook transmission, and the SRS resource in the SRS resource set includes one SRS port.

The network device configures two SRS resource sets aperiodicly used for antenna switching. The two SRS resource sets include a total of 3 SRS resources, and one SRS resource includes 1 SRS port. a=3<z. Among them, there are two ways to allocate three SRS resources in two SRS resource sets. Manner 1: The first SRS resource set includes 1 SRS resource, and the second SRS resource set includes 2 SRS resources. Manner 2: The first SRS resource set includes two SRS resources, and the second SRS resource set includes one SRS resource, that is, the two SRS resource sets used for antenna switching shown in FIG. 7.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 7, the terminal sends the SRS to the network device on the SRS resource 207 in the SRS resource set used for codebook transmission, and the SRS resource 208, SRS resource 209, and SRS resource 210 in the SRS resource set used for antenna switching. The SRS is sent to the network device.

Wherein, the antenna port used by the terminal to send the SRS on the SRS resource 207 (that is, antenna port 0) is different from the antenna port used for sending the SRS on any SRS resource switched by the antenna. That is, the antenna port used by the terminal to send SRS on the SRS resource 207 (that is, antenna port 0) is different from the following ports: the antenna port used for sending SRS on the SRS resource 208 (that is, antenna port 1), The antenna port used for sending the SRS on the 209 (that is, antenna port 2), and the antenna port used for sending the SRS on the SRS resource 210 (that is, the antenna port 3). SRS resource 207 to SRS resource 210 are a complete antenna switching resource.

The SRS resource 207 is the SRS resource that precedes the SRS resource 208 and is closest to the SRS resource 208 in the SRS resource set used for codebook transmission. The SRS resource 208 is the first SRS resource in the first SRS resource set used for antenna switching.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 207 to the SRS resource 210, and obtains the downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS respectively sent on the SRS resource 207 to the SRS resource 210.

In another example, the capability of the terminal is to support 2t4r, that is, the terminal includes 2 antenna ports for uplink transmission and 4 antenna ports for downlink reception. x=2, y=4, z=y/x=2.

The network device configures a periodic SRS resource set used for codebook transmission, and the SRS resource in the SRS resource set includes 2 SRS ports, namely 2t2r.

The network device configures an SRS resource set used for antenna switching. The SRS resource set includes one SRS resource, and one SRS resource includes two SRS ports.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 8, the terminal sends the SRS to the network device on the SRS resource 211 in the SRS resource set used for codebook transmission and sends the SRS to the network device on the SRS resource 212 in the SRS resource set used for antenna switching.

Among them, the antenna ports used by the terminal to send SRS on the SRS resource 211 (that is, antenna port 0 and antenna port 1) are different from the antenna ports used for sending SRS on the SRS resource 212 (that is, antenna port 2 and antenna port 3). .

The SRS resource 211 is the SRS resource that precedes the SRS resource 212 and is closest to the SRS resource 212 in the SRS resource set used for codebook transmission.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 211 and the SRS resource 212, and obtains downlink channel information based on the SRS respectively sent on the SRS resource 211 and the SRS resource 212 through the reciprocity of the uplink and downlink channels.

In one or more embodiments of the present disclosure, the first target SRS resource may be: the Nth SRS resource used for the first purpose from the third target SRS resource backward, where the third target SRS resource is For one SRS resource in a second SRS resource set, N is less than or equal to a second predetermined value, and N is a positive integer.

In an example, the first target SRS resource may be: an SRS resource used for the first purpose that is closest to the third target SRS resource. That is, N=1.

For example, the first target SRS resource is the first SRS resource used for at least one of codebook transmission, non-codebook transmission, and beam management starting from the third target SRS resource.

In an example, the third target SRS resource may be the last SRS resource in the last second SRS resource set in the time domain.

The following describes the embodiments of the present disclosure through specific examples.

Assuming that the first SRS resource set is an SRS resource set used for codebook transmission, the terminal can use the first target SRS resource in the SRS resource set used for codebook transmission to perform antenna switching, so that the network device can obtain downlink channel information .

The capability of the terminal is to support 1t2r, that is, the terminal includes one antenna port for uplink transmission and two antenna ports for downlink reception. x=1, y=2, z=y/x=2.

The network device configures a periodic SRS resource set used for codebook transmission, and the SRS resource in the SRS resource set includes one SRS port.

The network equipment configures an aperiodic SRS resource set for antenna switching. The SRS resource set includes one SRS resource, and one SRS resource includes one SRS port. a=1<z.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 9, the terminal sends the SRS to the network device on the SRS resource 214 in the SRS resource set used for codebook transmission and sends the SRS to the network device on the SRS resource 213 in the SRS resource set used for antenna switching.

The antenna port used by the terminal to send the SRS on the SRS resource 213 (that is, antenna port 1) is different from the antenna port used for sending the SRS on the SRS resource 214 (that is, antenna port 0).

The SRS resource 214 is the SRS resource behind the SRS resource 213 and closest to the SRS resource 213 in the SRS resource set used for codebook transmission.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 213 and the SRS resource 214, and obtains the downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS respectively sent on the SRS resource 213 and the SRS resource 214.

In one or more embodiments of the present disclosure, when the number of SRS resources in the first SRS resource set is multiple, the first target SRS resource may be the SRS resource for distance antenna switching in the first SRS resource set Recent SRS resources.

The solutions of the embodiments of the present disclosure are described below through specific examples. Assume that the first SRS resource set is an SRS resource set used for codebook transmission. The terminal may use the first target SRS resource in the SRS resource set used for codebook transmission to perform antenna switching, so that the network device obtains downlink channel information.

Based on the above assumption, in an example, as shown in FIG. 10, there are two SRS resources in the SRS resource set used for codebook transmission. There are two SRS resource sets used for antenna switching (ie, the second SRS resource set). The first SRS resource set used for antenna switching includes SRS resources 216, and the second SRS resource set used for antenna switching includes SRS resources. 217 and SRS Resources 218.

The SRS resources transmitted by the two codebooks that are relatively close to the resources for antenna switching are the SRS resource 215 and the SRS resource 219. Among them, the SRS resource 215 is closer to the antenna switching resource 216, and the SRS resource 219 is closer to the antenna switching resource 218, but in comparison, the SRS resource 215 is the closest to the antenna switching resource. Therefore, the first target SRS resource is the SRS resource 215. The terminal sends SRS to the network device on the SRS resource 215, the SRS resource 216, the SRS resource 217, and the SRS resource 218, respectively. The network device obtains downlink channel information according to the SRS sent by the terminal.

In another example, as shown in FIG. 11, there are two SRS resources in the SRS resource set used for codebook transmission, namely, SRS resource 221 and SRS resource 222. There are two SRS resource sets used for antenna switching (ie, the second SRS resource set). The first SRS resource set used for antenna switching includes SRS resources 220, and the second SRS resource set used for antenna switching includes SRS resources. 223 and SRS Resources 224.

The SRS resources transmitted by the two codebooks that are relatively close to the resources for antenna switching are the SRS resource 221 and the SRS resource 222. Among them, the SRS resource 221 is closer to the antenna switching resource 220, and the SRS resource 222 is closer to the antenna switching resource 223, but in comparison, the SRS resource 221 is closest to the antenna switching resource. Therefore, the first target SRS resource is the SRS resource 221. The terminal sends SRS to the network device on the SRS resource 220, the SRS resource 221, the SRS resource 223, and the SRS resource 224, respectively. The network device obtains downlink channel information according to the SRS sent by the terminal.

In yet another example, referring to FIG. 12, the difference between FIG. 12 and FIG. 11 is that, in FIG. 12, the SRS resource 222 is closest to the resource for antenna switching. Therefore, the first target SRS resource is the SRS resource 222. The terminal sends SRS to the network device on the SRS resource 220, the SRS resource 222, the SRS resource 223, and the SRS resource 224, respectively. The network device obtains downlink channel information according to the SRS sent by the terminal.

In addition, if the number of SRS resources closest to the SRS resource for antenna switching in the first SRS resource set is multiple, the first target SRS resource is the first SRS among the multiple SRS resources closest to the SRS resource for antenna switching. Resource, last SRS resource or scheduled SRS resource.

For example, as shown in FIG. 13, for two distances: the distance between the SRS resource 221 and the resource 220 for antenna switching, and the distance between the SRS resource 222 and the resource 223 for antenna switching, these two distances are the same. Then, the first resource, the last resource, or the predetermined resource in the SRS resource 221 and the SRS resource 222 is used as the first target SRS resource.

In one or more embodiments of the present disclosure, the number of first target SRS resources may be one or more. For example, in the case that the first SRS resource set is an SRS resource set used for non-codebook transmission, when the non-codebook transmission SRS resource set is used for antenna switching, it is equivalent to the SRS resource used for non-codebook transmission The two first target SRS resources in the set are put together for antenna switching.

In one or more embodiments of the present disclosure, in at least one first position and at least one second position arranged in the time domain, the time interval between two adjacent positions is less than a predetermined time length (for example, the predetermined time length is 14 Symbol or 1 time slot); where one of the two adjacent positions is the first position, and the other is the second position; at least one of the first positions is the fourth target SRS resource in the second SRS resource set At least one second position is a position on the fifth target SRS resource in the first SRS resource set. The predetermined length of time can be agreed by the agreement, network configuration or terminal report.

Wherein, the two adjacent positions in the foregoing may be two positions across the SRS resource set.

In one or more embodiments of the present disclosure, the fourth target SRS resource may include at least one of the following: the first SRS resource in the second SRS resource set, the last SRS resource in the second SRS resource set, and the first SRS resource in the second SRS resource set. 2. The predetermined SRS resource in the SRS resource set.

The order of the SRS resources in the second SRS resource set may be the order of the SRS resource ID or the time domain order.

In one or more embodiments of the present disclosure, the fifth target SRS resource may include at least one of the following: the first SRS resource in the first SRS resource set, the last SRS resource in the first SRS resource set, and the first SRS resource in the first SRS resource set. The SRS resource in an SRS resource set that is closest to the SRS resource used for the second purpose.

In one or more embodiments of the present disclosure, if the number of SRS resources closest to the SRS resource used for the second purpose is multiple, the fifth target SRS resource may be included in the SRS resource closest to the SRS resource used for the second purpose. The first SRS resource, the last SRS resource, or the predetermined SRS resource among the multiple SRS resources.

The order of the SRS resources in the first SRS resource set may be the order of the SRS resource ID or the time domain order.

In one or more embodiments of the present disclosure, the first position may be the start position of the first symbol of the fourth target SRS resource, the end position of the last symbol, or the first symbol of the fourth target SRS resource and The predetermined position of a symbol between the last symbol;

The second position may be the start position of the first symbol of the fifth target SRS resource, the end position of the last symbol of the fifth target SRS resource, or a predetermined position of a symbol between the first symbol and the last symbol of the fifth target SRS resource.

In one or more embodiments of the present disclosure, the first position may be the start position of the first time slot of the fourth target SRS resource, the end position of the last time slot, or the first position of the fourth target SRS resource. The predetermined position of a time slot between the time slot and the last time slot;

The second position may be the start position of the first time slot of the fifth target SRS resource, the end position of the last time slot, or a time between the first time slot and the last time slot of the fifth target SRS resource. The predetermined position of the gap.

The solutions of the embodiments of the present disclosure are described below through specific examples. Assuming that the first SRS resource set is an SRS resource set used for codebook transmission, the terminal can use the first target SRS resource in the SRS resource set used for codebook transmission to perform antenna switching, so that the network device can obtain downlink channel information .

Based on the above assumptions, in an example, the capability of the terminal is to support 2t8r, that is, the terminal includes 2 antenna ports for uplink transmission and 8 antenna ports for downlink reception. x=2, y=8, z=y/x=4.

The network device configures a periodic SRS resource set for codebook transmission, and the SRS resource in the SRS resource set includes 2 SRS ports.

The network equipment configures an aperiodic SRS resource set for antenna switching. The SRS resource set includes 3 SRS resources, and one SRS resource includes 2 SRS ports. a=3<z.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 14, the terminal sends SRS to the network device on the SRS resource 225 in the SRS resource set used for codebook transmission, and sends the SRS to the network device on the SRS resource 226, SRS resource 227, and SRS resource 228 used for antenna switching. Send SRS.

Among them, the antenna ports used by the terminal to send SRS on the SRS resource 225 (that is, antenna port 2 and antenna port 3) are different from the following antenna ports: the antenna port used for sending SRS on the SRS resource 226 (that is, antenna port 0) And antenna port 1), the antenna ports used to transmit SRS on SRS resource 227 (i.e. antenna port 4 and antenna port 5), and the antenna ports used to transmit SRS on SRS resource 228 (i.e. antenna port 6 and antenna port 7) ).

The SRS resource 225 is an SRS resource for resource multiplexing. The SRS resource 225 is not only used for codebook transmission, but also used for antenna switching. The interval between the initial position (that is, the second position) of the SRS resource 225 for resource multiplexing and the predetermined position (that is, the first position) of the first SRS resource 226 in the SRS resource set used for antenna switching is less than a predetermined number symbol.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 225 to the SRS resource 228, and obtains the downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS respectively sent on the SRS resource 225 to the SRS resource 228.

In another example, the capability of the terminal is to support 2t8r, that is, the terminal includes 2 antenna ports for uplink transmission and 8 antenna ports for downlink reception. x=2, y=8, z=y/x=4.

The network device configures a periodic SRS resource set for codebook transmission, and the SRS resource in the SRS resource set includes 2 SRS ports.

The network device is configured with two SRS resource sets aperiodicly used for antenna switching. The two SRS resource sets include 3 SRS resources, and one SRS resource includes 2 SRS ports. a=3<z. As shown in FIG. 15, the first SRS resource set includes one SRS resource (ie, SRS resource 229), and the second SRS resource set includes two SRS resources (ie, SRS resource 231 and SRS resource 232).

The terminal triggers antenna switching according to the SRS resource used for antenna switching. Continuing to refer to FIG. 15, the terminal sends SRS to the network device on the SRS resource 230 in the SRS resource set used for codebook transmission, and sends to the network device on the SRS resource 229, SRS resource 231, and SRS resource 232 used for antenna switching. SRS.

Among them, the antenna ports used by the terminal to send SRS on the SRS resource 230 (that is, antenna port 2 and antenna port 3) are different from the following antenna ports: the antenna port used for sending SRS on the SRS resource 220 (that is, antenna port 0) And antenna port 1), the antenna ports used to transmit SRS on SRS resource 231 (i.e. antenna port 4 and antenna port 5), and the antenna ports used to transmit SRS on SRS resource 232 (i.e. antenna port 6 and antenna port 7) ).

The SRS resource 230 is an SRS resource for resource multiplexing. The SRS resource 230 is not only used for codebook transmission, but also used for antenna switching. The interval between the predetermined position (i.e., the second position) of the SRS resource 230 for resource multiplexing and the predetermined position (i.e., the first position) of the previous SRS resource 229 used for antenna switching is less than a predetermined number of symbols. In addition, the interval between the predetermined position (ie, the second position) of the SRS resource 230 for resource multiplexing and the next predetermined position (ie, the first position) of the SRS resource 231 used for antenna switching is less than a predetermined number of symbols.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 229 to the SRS resource 232, and obtains the downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS respectively sent on the SRS resource 229 to the SRS resource 232.

In yet another example, the solution in FIG. 16 is similar to the solution in FIG. 15, and the difference between FIG. 16 and FIG. 15 is that the first position and the second position are different. In FIG. 16, the numbers of the first position and the second position are both two.

The second position 1 is the start position of the first symbol of the SRS resource 230 used for codebook transmission, and the second position 2 is the end position of the last symbol of the SRS resource 230 used for codebook transmission.

The resources corresponding to the first position are the two antenna switching resources that are closest to the second position 1 and the second position 2 respectively, that is, the SRS resource 229 and the SRS resource 231. The first position 1 is a predetermined position on the SRS resource 229. The first position 2 is a predetermined position on the SRS resource 231. The interval between the first position 1 and its adjacent second position 1 is less than a predetermined number of symbols. The interval between the first position 2 and its adjacent second position 2 is less than a predetermined number of symbols.

In one or more embodiments of the present disclosure, the antenna port used for sending the SRS on the sixth target SRS resource may be the same as the antenna port used for sending the SRS on the seventh target SRS resource, where the sixth target SRS The resource is an SRS resource before the second SRS resource set and used only for the first purpose, and the seventh target SRS resource is an SRS resource after the second SRS resource set and only used for the first purpose.

For example, the first SRS resource set is a resource set used for codebook transmission, and the second SRS resource set is a resource set used for antenna switching. Through the embodiments of the present disclosure, the terminal needs to quickly switch back to the original antenna port after antenna switching, so as to maintain the integrity of the codebook transmission.

In one or more embodiments of the present disclosure, the antenna port used to transmit the second SRS on the last SRS resource in the last second SRS resource set in the time domain may be the same as that on the seventh target SRS resource. The antenna ports used by the SRS are the same; wherein, the seventh target SRS resource is the SRS resource after the second SRS resource set and used only for the first purpose.

For example, the first SRS resource set is a resource set used for codebook transmission, and the second SRS resource set is a resource set used for antenna switching. Through the embodiments of the present disclosure, the terminal will not switch back to the original antenna port for codebook transmission after antenna switching.

A specific example is used to illustrate the solution of the foregoing embodiment. Assuming that the first SRS resource set is an SRS resource set used for codebook transmission, the terminal can use the first target SRS resource in the SRS resource set used for codebook transmission to perform antenna switching, so that the network device can obtain downlink channel information .

Based on the above assumption, in an example, the terminal's capability is to support 1t2r, that is, the terminal includes one antenna port for uplink transmission and two antenna ports for downlink reception. x=1, y=2, z=y/x=2.

The network device configures a periodic SRS resource set for codebook transmission, and the SRS resource in the SRS resource set includes one SRS port.

The network equipment configures an aperiodic SRS resource set for antenna switching. The SRS resource set includes one SRS resource, and one SRS resource includes one SRS port. a=1<z.

The terminal triggers antenna switching according to the SRS resource used for antenna switching. As shown in FIG. 17, the terminal sends the SRS to the network device on the SRS resource 233 in the SRS resource set used for codebook transmission and sends the SRS to the network device on the SRS resource 234 in the SRS resource set used for antenna switching.

The antenna port used by the terminal to send the SRS on the SRS resource 233 (that is, antenna port 0) is different from the antenna port used for sending the SRS on the SRS resource 234 (that is, the antenna port 1). Since the SRS resource 233 is used not only for codebook transmission but also for antenna switching, the SRS resource 233 implements resource reuse.

The SRS resource 233 is the SRS resource that precedes the SRS resource 234 and is closest to the SRS resource 234 in the SRS resource set used for codebook transmission.

In addition, the network device receives the SRS respectively sent by the terminal on the SRS resource 233 and the SRS resource 234, and obtains downlink channel information based on the SRS respectively sent on the SRS resource 233 and the SRS resource 234 through the reciprocity of the uplink and downlink channels.

In addition, between the last SRS resource used for antenna switching and the subsequent SRS resource only used for codebook transmission, the antenna port used for transmitting the SRS is inconsistent. In FIG. 17, the antenna port used for sending SRS on the SRS resource 234 (that is, antenna port 1) is different from the antenna port used for sending the SRS on the SRS resource 235 (that is, antenna port 0).

In another example, the scheme in Fig. 18 is similar to the scheme in Fig. 17, the difference between the two is: in Fig. 18, the last SRS resource used for antenna switching and the following SRS resource only used for codebook transmission , The antenna ports used to send SRS are the same. That is, the antenna port used for sending the SRS on the SRS resource 234 (that is, antenna port 1) is the same as the antenna port used for sending the SRS on the SRS resource 235 (that is, the antenna port 1).

In one or more embodiments of the present disclosure, the second SRS resource set may be an aperiodic SRS resource set.

In one or more embodiments of the present disclosure, the second SRS resource set and the first SRS resource set may both be aperiodic SRS resource sets; the second SRS resource set and the first SRS resource set are under the same downlink control information (Downlink Control Information, DCI) is activated.

In one or more embodiments of the present disclosure, at least one parameter value of the first SRS resource set and the second SRS resource set may be the same. For example, the first SRS resource set and the second SRS resource set have the same alpha, p0, pathlossReferenceRS, and srs-PowerControlAdjustmentStates.

In one or more embodiments of the present disclosure, the terminal may include x antenna ports for uplink transmission and y antenna ports for downlink reception; that is, the terminal capability supports xTyR.

All second SRS resource sets used for the second purpose include a total of SRS resources, a<z, z=y/x, x can be divisible by y, and x, y, z, and a are positive integers.

For example, the second purpose is antenna switching, and all second SRS resource sets used for antenna switching include a SRS resources in total, a<z, z represents the number of SRS resources required for a complete antenna switching. Among them, the SRS resource required for a complete antenna switching refers to the antenna switching resource required to obtain a complete downlink channel information.

In one or more embodiments of the present disclosure, a<z indicates that the first SRS resource set is also used for the second purpose.

For example, the network device implicitly instructs the terminal to also use the first SRS resource set for antenna switching through a<z, so as to instruct the terminal to use a resource multiplexing solution to perform antenna switching.

In one or more embodiments of the present disclosure, S103 may include:

In the case of a<z, the network device obtains channel information according to the first SRS and the second SRS. For example, in the case of a<z, the network device obtains downlink channel information according to the first SRS and the second SRS.

In one or more embodiments of the present disclosure, a and z may satisfy: a+1=z.

In one or more embodiments of the present disclosure, among the SRS resources in the first target SRS resource and the second SRS resource set arranged in the time domain, the time interval between any two adjacent SRS resources is sufficient for The minimum time interval range for the second purpose. For example, the minimum time interval range is the minimum time interval range used for antenna switching.

In one or more embodiments of the present disclosure, the priority of the first target SRS resource and the SRS resource in the second SRS resource set for the second use may be higher than the priority for the use other than the second use class. For example, the priority of the first target SRS resource and the SRS resource in the second SRS resource set used for antenna switching is higher than the priority used for purposes other than antenna switching.

In one or more embodiments of the present disclosure, S102 may include:

Upon receiving the first indication information sent by the network device, the terminal sends the first SRS to the network device on the first target SRS resource in the first SRS resource set, and sends the first SRS to the network device on the SRS resource in the second SRS resource set. The network device sends the second SRS;

Wherein, the first indication information indicates that the first SRS resource set is also used for the second purpose.

Correspondingly, before the network device receives the first SRS and the second SRS, the method for acquiring downlink channel information may further include the network device sending the aforementioned first indication information to the terminal.

In the embodiment of the present disclosure, when the network device instructs the terminal to perform resource multiplexing by sending the first indication information, the terminal performs resource multiplexing.

In one or more embodiments of the present disclosure, before S101, the network device sends second indication information and third indication information to the terminal, the second indication information indicates the first SRS resource set used for the first purpose, and the third indication The information indicates the second SRS resource set used for the second purpose.

Correspondingly, S101 may include: the terminal receives the second instruction information and the third instruction information sent by the network device.

In one or more embodiments of the present disclosure, S103 may include:

Acquiring channel information according to the second SRS and the first SRS sent on multiple first target SRS resources;

or,

Acquire channel information according to the second SRS and the first SRS sent on one of the first target SRS resources.

The foregoing uses various examples to describe in detail that the codebook transmission resources are used for antenna switching. The following uses an example to illustrate the use of non-codebook transmission resources for antenna switching.

The terminal capability supports 2T4R, and the network equipment is configured with an SRS resource set for noncodebook transmission. The SRS resource set includes two SRS resources of 1 port, and the two SRS resources have the same comb value and comb offset, distinguish these two SRS resources by the cyclic shift of the SRS sequence. That is, different cs (cycle shift) values are used. At this time, the SRS resources used for non-codebook transmission are not digital beamforming.

The network device configures an SRS resource set used for antenna switching, where one SRS resource is configured in the SRS resource set.

The terminal sends the first SRS to the network device on the first target SRS resource in the SRS resource set used for non-codebook transmission, and sends the second SRS to the network device on the SRS resource in the SRS resource set used for antenna switching. The network device obtains downlink channel information according to the first SRS and the second SRS.

FIG. 19 shows a schematic diagram of interaction between a terminal and a network device used in a codebook transmission method provided by the present disclosure. As shown in Figure 19, the interaction between the terminal and the network device includes:

S301: The terminal sends an SRS to a network device on the SRS resource in the SRS resource set used for antenna switching. Correspondingly, the network device receives the SRS sent by the terminal on the SRS resource in the SRS resource set used for antenna switching;

S302: The network device obtains the transmission precoding matrix indicator (TPMI, Transmit Precoding Matrix Indicator) corresponding to each SRS resource in the SRS resource set and the number of layers corresponding to the TPMI according to the SRS sent on the SRS resource in the SRS resource set. At least one

S303: The network device selects the target SRS resource from the SRS resources in the SRS resource set.

S304: The network device sends an SRS resource indication to the terminal, where the SRS resource indication is used to indicate at least one of the target SRS resource, the target TPMI corresponding to the target SRS resource, and the number of layers corresponding to the target TPMI. Correspondingly, the terminal receives the SRS resource indication sent by the network device;

S305: The terminal performs codebook transmission according to at least one of the target SRS resource, the target TPMI, and the number of layers corresponding to the target TPMI.

In S305, the terminal may perform codebook transmission on the antenna port of the target SRS resource according to at least one of the target SRS resource, the target TPMI, and the number of layers corresponding to the target TPMI.

In the embodiment of the present disclosure, the terminal performs codebook transmission according to at least one of the target SRS resource in the SRS resource set for antenna switching, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers. . The SRS resources for antenna switching are used for codebook transmission, which realizes the multiplexing of SRS resources for antenna switching, saves codebook transmission resources, and improves the utilization rate of SRS resources.

The following uses an example to illustrate that the SRS resource for antenna switching is used for codebook transmission.

It is assumed that the terminal capability supports the antenna configuration of xTyR.

The network device configures at least one SRS resource set for antenna switching, at least one SRS resource set includes y/x SRS resources in total, that is, y/x antenna switching is performed, and each SRS resource includes x SRS ports. That is, the SRS resource at each antenna switching time includes x SRS ports.

The terminal sends the SRS to the network device on the SRS resource of the antenna switching. The network device obtains y/x TPMIs and the number of layers corresponding to each TPMI according to the SRS sent by the terminal on the SRS resource of the antenna switching. The network device sends an SRS resource indication to the terminal, where the SRS resource indication is used to indicate at least one of a target SRS resource used for antenna switching, a target TPMI corresponding to the target SRS resource, and a number of layers corresponding to the target TPMI. The terminal performs codebook transmission on the target SRS resource according to at least one of the target SRS resource, the target TPMI, and the number of layers corresponding to the target TPMI.

FIG. 20 shows a schematic structural diagram of an embodiment of an apparatus for transmitting a sounding reference signal SRS provided in the present disclosure. As shown in FIG. 20, a sounding reference signal SRS transmission device 400 includes:

The resource set acquiring module 401 is configured to acquire a first SRS resource set for a first purpose and a second SRS resource set for a second purpose;

The SRS sending module 402 is configured to send a first SRS to a network device on the first target SRS resource in the first SRS resource set, and send a second SRS to the network device on the SRS resource in the second SRS resource set, where: The antenna port used for transmitting the first SRS is different from the antenna port used for transmitting the second SRS, so that the network device obtains channel information according to the first SRS and the second SRS.

In the embodiment of the present disclosure, the terminal can use the SRS resource of the first purpose for the second purpose, which realizes the multiplexing of the SRS resource, saves a part of the SRS resource, and improves the utilization rate of the SRS resource.

In one or more embodiments of the present disclosure, the first use may include at least one of codebook transmission, non-codebook transmission, and beam management; and/or, the second use includes antenna switching; acquiring channel information includes acquiring Downlink channel information.

In one or more embodiments of the present disclosure, the first target SRS resource may be: the Mth SRS resource used for the first purpose from the second target SRS resource onwards, where the second target SRS resource is For one SRS resource in a second SRS resource set, M is less than or equal to the first predetermined value, and M is a positive integer;

or,

The first target SRS resource may be: the Nth SRS resource used for the first purpose from the third target SRS resource to the back, where the third target SRS resource is a second SRS resource set For an SRS resource, N is less than or equal to a second predetermined value, and N is a positive integer.

In one or more embodiments of the present disclosure, the second target SRS resource may be the first SRS resource in the first second SRS resource set in the time domain;

or,

The third target SRS resource may be the last SRS resource in the last second SRS resource set in the time domain.

In one or more embodiments of the present disclosure, in at least one first position and at least one second position arranged in a time domain, the time interval between two adjacent positions may be less than a predetermined time length;

Wherein, one of the two adjacent positions is the first position, and the other position is the second position;

At least one first position is a position on the fourth target SRS resource in the second SRS resource set, and at least one second position is a position on the fifth target SRS resource in the first SRS resource set.

In one or more embodiments of the present disclosure, the fourth target SRS resource may include at least one of the following: the first SRS resource in the second SRS resource set, the last SRS resource in the second SRS resource set, and the first SRS resource in the second SRS resource set. 2. The predetermined SRS resource in the SRS resource set;

and / or,

The fifth target SRS resource may include at least one of the following: the first SRS resource in the first SRS resource set, the last SRS resource in the first SRS resource set, and the SRS resource in the first SRS resource set and used for the second purpose The SRS resource is the nearest SRS resource.

In one or more embodiments of the present disclosure, if the number of SRS resources closest to the SRS resource used for the second purpose is multiple, the fifth target SRS resource may be included in the SRS resource closest to the SRS resource used for the second purpose. The first SRS resource, the last SRS resource, or the predetermined SRS resource among the multiple SRS resources.

In one or more embodiments of the present disclosure, the first position may be the start position of the first symbol of the fourth target SRS resource, the end position of the last symbol, or the first symbol of the fourth target SRS resource and The predetermined position of a symbol between the last symbol;

and / or,

The second position may be the start position of the first symbol of the fifth target SRS resource, the end position of the last symbol of the fifth target SRS resource, or a predetermined position of a symbol between the first symbol and the last symbol of the fifth target SRS resource.

In one or more embodiments of the present disclosure, the first position may be the start position of the first time slot of the fourth target SRS resource, the end position of the last time slot, or the first position of the fourth target SRS resource. The predetermined position of a time slot between the time slot and the last time slot;

and / or,

The second position may be the start position of the first time slot of the fifth target SRS resource, the end position of the last time slot, or a time between the first time slot and the last time slot of the fifth target SRS resource. The predetermined position of the gap.

In one or more embodiments of the present disclosure, the antenna port used for sending the SRS on the sixth target SRS resource may be the same as the antenna port used for sending the SRS on the seventh target SRS resource, where the sixth target SRS The resource is an SRS resource before the second SRS resource set and used only for the first purpose, and the seventh target SRS resource is an SRS resource after the second SRS resource set and only used for the first purpose;

or,

The antenna port used to transmit the second SRS on the last SRS resource in the last second SRS resource set in the time domain may be the same as the antenna port used to transmit SRS on the seventh target SRS resource; where, the seventh The target SRS resource is at least one SRS resource after the second SRS resource set and used only for the first purpose.

In one or more embodiments of the present disclosure, the second SRS resource set may be an aperiodic SRS resource set.

In one or more embodiments of the present disclosure, the second SRS resource set and the first SRS resource set may both be aperiodic SRS resource sets;

The second SRS resource set and the first SRS resource set may be activated by the same downlink control information DCI.

In one or more embodiments of the present disclosure, at least one parameter value of the first SRS resource set and the second SRS resource set may be the same.

In one or more embodiments of the present disclosure, the terminal may include x antenna ports for uplink transmission and y antenna ports for downlink reception;

All second SRS resource sets used for the second purpose include a total of SRS resources, a<z, z=y/x, x can be divisible by y, and x, y, z, and a are positive integers.

In one or more embodiments of the present disclosure, a<z indicates that the first SRS resource set is also used for the second purpose.

In one or more embodiments of the present disclosure, a and z may satisfy: a+1=z.

In one or more embodiments of the present disclosure, among the SRS resources in the first target SRS resource and the second SRS resource set arranged in the time domain, the time interval between any two adjacent SRS resources is sufficient for The minimum time interval range for the second purpose.

In one or more embodiments of the present disclosure, the priority of the first target SRS resource and the SRS resource in the second SRS resource set for the second use is higher than the priority for the use other than the second use .

In one or more embodiments of the present disclosure, the SRS sending module 402 can be used to:

In the case of receiving the first indication information sent by the network device, send the first SRS to the network device on the first target SRS resource in the first SRS resource set, and send the first SRS to the network on the SRS resource in the second SRS resource set. The device sends the second SRS;

Wherein, the first indication information indicates that the first SRS resource set is also used for the second purpose.

Fig. 21 shows a schematic structural diagram of an embodiment of a channel information acquiring apparatus provided by the present disclosure. As shown in FIG. 21, the channel information acquiring device 500 includes:

The first information sending module 501 is configured to send second indication information and third indication information to the terminal, the second indication information indicates the first SRS resource set used for the first purpose, and the third indication information indicates the second indication information used for the second purpose. The second SRS resource set;

The SRS receiving module 502 is configured to receive the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the second SRS sent on the SRS resource in the second SRS resource set, where the terminal sends The antenna port used by the first SRS is different from the antenna port used by the terminal to transmit the second SRS;

The channel information acquisition module 503 is configured to acquire channel information according to the first SRS and the second SRS.

In the embodiment of the present disclosure, the SRS resource of the first purpose is used for the second purpose, so that the network device obtains channel information, realizes the multiplexing of the SRS resource, saves a part of the SRS resource, and improves the utilization rate of the SRS resource.

In one or more embodiments of the present disclosure, the first use may include at least one of codebook transmission, non-codebook transmission, and beam management;

and / or,

The second use may include antenna switching; acquiring channel information includes acquiring downlink channel information.

In one or more embodiments of the present disclosure, the terminal may include x antenna ports for uplink transmission and y antenna ports for downlink reception, x can be divisible by y, z=y/x, used for the first All the second SRS resource sets for the second purpose include a SRS resources; x, y, z and a are positive integers;

The channel information acquisition module 503 can be used to:

In the case of a<z, the channel information is acquired according to the first SRS and the second SRS.

In one or more embodiments of the present disclosure, a and z may satisfy: a+1=z.

In one or more embodiments of the present disclosure, when the number of first target SRS resources is multiple,

The channel information acquisition module 503 may include:

The first information acquisition module is configured to acquire channel information according to the first SRS and the second SRS sent on a plurality of first target SRS resources;

or,

The second information acquisition module is configured to acquire channel information according to the first SRS and the second SRS sent on one of the first target SRS resources.

In one or more embodiments of the present disclosure, the channel information acquiring apparatus 500 may further include:

The indication information sending module is configured to send first indication information to the terminal, where the first indication information indicates that the first SRS resource set is also used for a second purpose.

FIG. 22 shows a schematic structural diagram of an embodiment of the codebook transmission apparatus provided in the seventh aspect of the present disclosure. As shown in FIG. 22, the codebook transmission device 600 includes:

The SRS sending module 601 is used to send SRS to the network device on the SRS resource in the SRS resource set used for antenna switching, so that the network device obtains the transmission precoding matrix indication TPMI and transmission corresponding to each SRS resource in the SRS resource set The precoding matrix indicates at least one of the number of layers corresponding to the TPMI;

The resource indication receiving module 602 is configured to receive the SRS resource indication sent by the network device, the SRS resource indication is used to indicate the target SRS resource in the SRS resource set, the target transmission precoding matrix indicator TPMI and the target transmission precoding matrix corresponding to the target SRS resource Indicate at least one of the layers corresponding to TPMI;

The codebook transmission module 603 is configured to perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI.

In the embodiment of the present disclosure, the terminal performs codebook transmission according to at least one of the target SRS resource in the SRS resource set for antenna switching, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers. . The SRS resources for antenna switching are used for codebook transmission, which realizes the multiplexing of SRS resources for antenna switching, saves codebook transmission resources, and improves the utilization rate of SRS resources.

In an embodiment of the present disclosure, the codebook transmission module 603 may be used to:

According to at least one of the target transmission precoding matrix indication TPMI and the number of layers corresponding to the target transmission precoding matrix indication TPMI, codebook transmission is performed on the antenna port of the target SRS resource.

FIG. 23 shows a schematic structural diagram of an embodiment of a codebook transmission device provided in the eighth aspect of the present disclosure. As shown in FIG. 23, the codebook transmission device 700 includes:

The SRS receiving module 701 is configured to receive the SRS sent by the terminal on the SRS resources in the SRS resource set, where the SRS resource set is an SRS resource set used for antenna switching;

The information obtaining module 702 is configured to obtain the transmission precoding matrix indicator TPMI corresponding to each SRS resource in the SRS resource set and the number of layers corresponding to the transmission precoding matrix indicator TPMI according to the SRS sent on the SRS resource in the SRS resource set At least one of:

The resource selection module 703 is used to select the target SRS resource from the SRS resources in the SRS resource set;

The resource indication sending module 704 is configured to send an SRS resource indication to the terminal. The SRS resource indication is used to indicate the target SRS resource, the target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and the target transmission precoding matrix indication TPMI corresponding to the number of layers At least one item of, so that the terminal performs codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI.

In the embodiment of the present disclosure, the terminal performs codebook transmission according to at least one of the target SRS resource in the SRS resource set for antenna switching, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers. . The SRS resources for antenna switching are used for codebook transmission, which realizes the multiplexing of SRS resources for antenna switching, saves codebook transmission resources, and improves the utilization rate of SRS resources.

FIG. 24 shows a schematic diagram of the hardware structure of an embodiment of the electronic device provided by the present disclosure. The electronic device 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, user input unit 807, interface unit 808, memory 809, processor 810, power supply 811 and other components. Those skilled in the art can understand that the structure of the electronic device shown in FIG. 24 does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than those shown in the figure, or a combination of certain components, or different components. Layout. In the embodiments of the present disclosure, electronic devices include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, in-vehicle terminals, wearable devices, and pedometers.

Among them, in one embodiment, the radio frequency unit 801 or the processor 810 is configured to obtain a first SRS resource set for a first purpose and a second SRS resource set for a second purpose. For example, the radio frequency unit 801 receives a first SRS resource set used for a first purpose and a second SRS resource set used for a second purpose from the network device. Alternatively, the processor 810 acquires the first SRS resource set for the first purpose and the second SRS resource set for the second purpose according to the provisions of the agreement.

The radio frequency unit 801 is further configured to send a first SRS to a network device on the first target SRS resource in the first SRS resource set, and send a second SRS to the network device on the SRS resource in the second SRS resource set, where: The antenna port used for transmitting the first SRS is different from the antenna port used for transmitting the second SRS, so that the network device obtains channel information according to the first SRS and the second SRS.

In the embodiment of the present disclosure, the SRS resource of the first purpose can be used for the second purpose, which realizes the multiplexing of the SRS resource, saves a part of the SRS resource, and improves the utilization rate of the SRS resource.

In another embodiment, the radio frequency unit 801 is configured to send SRS to the network device on the SRS resource in the SRS resource set used for antenna switching, so that the network device obtains the transmission schedule corresponding to each SRS resource in the SRS resource set. At least one of the coding matrix indicating the TPMI and the transmission precoding matrix indicating the number of layers corresponding to the TPMI;

The radio frequency unit 801 is also used to receive an SRS resource indication sent by a network device. The SRS resource indication is used to indicate the target SRS resource in the SRS resource set, the target transmission precoding matrix indicator TPMI corresponding to the target SRS resource, and the target transmission precoding matrix indicator At least one of the layers corresponding to TPMI;

The radio frequency unit 801 is further configured to perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI.

In the embodiment of the present disclosure, the terminal performs codebook transmission according to at least one of the target SRS resource in the SRS resource set for antenna switching, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers. . The SRS resources for antenna switching are used for codebook transmission, which realizes the multiplexing of SRS resources for antenna switching, saves codebook transmission resources, and improves the utilization rate of SRS resources.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 801 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving the downlink data from the base station, it is processed by the processor 810; Uplink data is sent 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. In addition, the radio frequency unit 801 can also communicate with the network and other devices through a wireless communication system.

Electronic devices provide users with wireless broadband Internet access through the network module 802, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 803 can convert the audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into audio signals and output them as sounds. Moreover, the audio output unit 803 may also provide audio output related to a specific function performed by the electronic device 800 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.

The input unit 804 is used to receive audio or video signals. The input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042, and the graphics processor 8041 is used to capture images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed. The processed image frame may be displayed on the display unit 806. The image frame processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or sent via the radio frequency unit 801 or the network module 802. The microphone 8042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication base station via the radio frequency unit 801 for output in the case of a telephone call mode.

The electronic device 800 further includes at least one sensor 805, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 8061 according to the brightness of the ambient light. The proximity sensor can close the display panel 8061 and the display panel 8061 when the electronic device 800 is moved to the ear. / Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of electronic devices (such as horizontal and vertical screen switching, related games) , Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc.; sensor 805 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.

The display unit 806 is used to display information input by the user or information provided to the user. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

The user input unit 807 can be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the electronic device. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 8071 or near the touch panel 8071. operate). The touch panel 8071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 810, the command sent by the processor 810 is received and executed. In addition, the touch panel 8071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 may also include other input devices 8072. Specifically, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 8071 can be overlaid on the display panel 8061. When the touch panel 8071 detects a touch operation on or near it, it transmits it to the processor 810 to determine the type of the touch event, and then the processor 810 determines the type of touch event according to the touch. The type of event provides corresponding visual output on the display panel 8061. Although in FIG. 24, the touch panel 8071 and the display panel 8061 are used as two independent components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 8071 and the display panel 8061 can be integrated The implementation of the input and output functions of the electronic device is not specifically limited here.

The interface unit 808 is an interface for connecting an external device and the electronic device 800. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc. The interface unit 808 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the electronic device 800 or can be used to connect the electronic device 800 to an external device. Transfer data between devices.

The memory 809 can be used to store software programs and various data. The memory 809 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc. In addition, the memory 809 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 810 is the control center of the electronic device. It uses various interfaces and lines to connect the various parts of the entire electronic device, runs or executes the software programs and/or modules stored in the memory 809, and calls the data stored in the memory 809. , Perform various functions of electronic equipment and process data, so as to monitor the electronic equipment as a whole. The processor 810 may include one or more processing units; in some embodiments, the processor 810 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, and application programs, etc. The modem processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 810.

The electronic device 800 may also include a power source 811 (such as a battery) for supplying power to various components. In some embodiments, the power source 811 may be logically connected to the processor 810 through a power management system, so that the power management system can manage charging, discharging, and Functions such as power management.

In addition, the electronic device 800 includes some functional modules not shown, which will not be repeated here.

An embodiment of the present disclosure also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and running on the processor. When the computer program is executed by the processor, the transmission of the aforementioned sounding reference signal SRS is realized. Each process of the method, the channel information acquisition method, or the codebook transmission method embodiment can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.

The embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned sounding reference signal SRS transmission method, channel information acquisition method or codebook is realized Each process of the embodiment of the transmission method can achieve the same technical effect. In order to avoid repetition, it will not be repeated here. Wherein, examples of the computer-readable storage medium include non-transitory computer-readable storage media, such as read-only memory (Read-Only Memory, ROM for short), Random Access Memory (RAM for short), and magnetic CD or CD, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or device that includes the element.

Through the description of the above implementation manners, those skilled in the art can clearly understand that the above-mentioned embodiment method can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the present disclosure essentially or the part that contributes to the prior art can be embodied in the form of a software product, the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) , Including several instructions to make a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.

It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present disclosure is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be different from the order in the embodiments, or several steps may be performed at the same time.

The various aspects of the present disclosure have been described above with reference to the flowcharts and/or block diagrams of the method, apparatus (system) and computer storage medium according to the embodiments of the present disclosure. It should be understood that each block in the flowcharts and/or block diagrams and combinations of blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine that enables the execution of these instructions via the processor of the computer or other programmable data processing device Implementation of the functions/actions specified in one or more blocks of the flowcharts and/or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a dedicated processor, a special application processor, or a field programmable logic circuit. It can also be understood that each block in the block diagram and/or flowchart and the combination of the blocks in the block diagram and/or flowchart can also be implemented by dedicated hardware that performs specified functions or actions, or can be implemented by dedicated hardware and A combination of computer instructions.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims (34)

A transmission method of sounding reference signal SRS, applied to a terminal, and the method includes: Acquiring a first SRS resource set for the first purpose and a second SRS resource set for the second purpose; The first SRS is sent to the network device on the first target SRS resource in the first SRS resource set, and the second SRS is sent to the network device on the SRS resource in the second SRS resource set, where The antenna port used by the first SRS is different from the antenna port used for transmitting the second SRS, so that the network device obtains channel information according to the first SRS and the second SRS. The method of claim 1, wherein: The first use includes at least one of codebook transmission, non-codebook transmission, and beam management; and / or, The second use includes antenna switching; and the acquiring channel information includes acquiring downlink channel information. The method of claim 1, wherein: The first target SRS resource is: the M th SRS resource used for the first purpose from the second target SRS resource onwards, where the second target SRS resource is one of the second SRS resources For one SRS resource in the set, M is less than or equal to the first predetermined value, and M is a positive integer; or, The first target SRS resource is: the Nth SRS resource used for at least one item of the first purpose from the third target SRS resource and backward, wherein the third target SRS resource is one SRS resource For one SRS resource in the second SRS resource set, N is less than or equal to a second predetermined value, and N is a positive integer. The method of claim 3, wherein: The second target SRS resource is the first SRS resource in the first second SRS resource set in the time domain; or, The third target SRS resource is the last SRS resource in the last second SRS resource set in the time domain. The method of claim 1, wherein: In the at least one first position and at least one second position arranged in the time domain, the time interval between two adjacent positions is less than a predetermined length of time; Wherein, one of the two adjacent positions is the first position, and the other position is the second position; The at least one first position is a position on a fourth target SRS resource in the second SRS resource set, and the at least one second position is a position on a fifth target SRS resource in the first SRS resource set Location. The method of claim 5, wherein: The fourth target SRS resource includes at least one of the following: the first SRS resource in the second SRS resource set, the last SRS resource in the second SRS resource set, and the second SRS resource set The scheduled SRS resources; and / or, The fifth target SRS resource includes at least one of the following: the first SRS resource in the first SRS resource set, the last SRS resource in the first SRS resource set, and the first SRS resource in the first SRS resource set The SRS resource closest to the SRS resource used for the second purpose. The method according to claim 6, wherein, if the number of SRS resources closest to the SRS resource used for the second purpose is multiple, the fifth target SRS resource is included in and used for the second purpose. The first SRS resource, the last SRS resource, or the predetermined SRS resource among the most recent SRS resources. The method of claim 5, wherein: The first position is the start position of the first symbol of the fourth target SRS resource, the end position of the last symbol of the fourth target SRS resource, or one between the first symbol and the last symbol of the fourth target SRS resource The predetermined position of the symbol; and / or, The second position is the start position of the first symbol of the fifth target SRS resource, the end position of the last symbol, or one between the first symbol and the last symbol of the fifth target SRS resource The predetermined position of the symbol. The method of claim 5, wherein: The first position is the start position of the first time slot, the end position of the last time slot of the fourth target SRS resource, or the first time slot and the last time slot of the fourth target SRS resource The predetermined position of a time slot in between; and / or, The second position is the start position of the first time slot, the end position of the last time slot of the fifth target SRS resource, or the first time slot and the last time slot of the fifth target SRS resource A predetermined position in between. The method according to any one of claims 1 to 9, wherein: The antenna port used for sending SRS on the sixth target SRS resource is the same as the antenna port used for sending SRS on the seventh target SRS resource, where the sixth target SRS resource is before the second SRS resource set SRS resources that are only used for the first purpose, and the seventh target SRS resources are SRS resources that are after the second SRS resource set and are only used for the first purpose; or, The antenna port used for transmitting the second SRS on the last SRS resource in the last second SRS resource set in the time domain is the same as the antenna port used for transmitting the SRS on the seventh target SRS resource; where The seventh target SRS resource is an SRS resource that is after the second SRS resource set and is only used for at least one item of the first purpose. The method according to any one of claims 1 to 9, wherein the second SRS resource set is an aperiodic SRS resource set. The method according to any one of claims 1 to 9, wherein the second SRS resource set and the first SRS resource set are both aperiodic SRS resource sets; The second SRS resource set and the first SRS resource set are activated by the same downlink control information DCI. The method according to any one of claims 1 to 9, wherein: At least one parameter value of the first SRS resource set and the second SRS resource set are the same. The method according to any one of claims 1 to 9, wherein: The terminal includes x antenna ports for uplink transmission and y antenna ports for downlink reception; All the second SRS resource sets used for the second purpose include a total of SRS resources, a<z, z=y/x, x can be divisible by y, and x, y, z, and a are positive integers. The method according to claim 14, wherein a<z indicates that the first SRS resource set is also used for the second purpose. The method according to claim 14, wherein a and z satisfy: a+1=z. The method according to any one of claims 1 to 9, wherein: Among the SRS resources in the first target SRS resource and the second SRS resource set arranged in the time domain, the time interval between any two adjacent SRS resources meets the minimum time for the second purpose Interval range. The method according to any one of claims 1 to 9, wherein: The priority of the SRS resource in the first target SRS resource and the SRS resource in the second SRS resource set for the second use is higher than the priority for the use other than the second use. The method according to any one of claims 1 to 9, wherein the first SRS is sent to the network device on the first target SRS resource in the first SRS resource set, and the second SRS resource is Sending the second SRS to the network device on the SRS resources in the set includes: In the case of receiving the first indication information sent by the network device, the first SRS is sent to the network device on the first target SRS resource in the first SRS resource set, and the second SRS resource is Sending a second SRS to the network device on the SRS resources in the set; Wherein, the first indication information indicates that the first SRS resource set is also used for the second purpose. A method for acquiring channel information is applied to a network device, and the method includes: Sending second indication information and third indication information to the terminal, the second indication information indicating a first SRS resource set used for the first purpose, and the third indication information indicating a second SRS resource set used for the second purpose ； Receiving the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the second SRS sent on the SRS resource in the second SRS resource set, wherein the terminal The antenna port used for transmitting the first SRS is different from the antenna port used by the terminal for transmitting the second SRS; Acquire channel information according to the first SRS and the second SRS. The method of claim 20, wherein: The first use includes at least one of codebook transmission, non-codebook transmission, and beam management; and / or, The second use includes antenna switching; and the acquiring channel information includes acquiring downlink channel information. The method according to claim 20, wherein the terminal includes x antenna ports for uplink transmission and y antenna ports for downlink reception, x can be divisible by y, z=y/x; All the second SRS resource sets for the second purpose include a total of SRS resources; x, y, z, and a are positive integers; The acquiring channel information according to the first SRS and the second SRS includes: In the case of a<z, acquire channel information according to the first SRS and the second SRS. The method according to claim 22, wherein a and z satisfy: a+1=z. The method according to claim 20, wherein, when the number of the first target SRS resources is multiple, The acquiring channel information according to the first SRS and the second SRS includes: Acquiring channel information according to the first SRS and the second SRS sent on a plurality of the first target SRS resources; or, Acquire channel information according to the first SRS and the second SRS sent on one of the first target SRS resources. The method according to claim 20, wherein the receiving the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the SRS in the second SRS resource set Before the second SRS is sent on the resource, the method further includes: Sending first indication information to the terminal, where the first indication information indicates that the first SRS resource set is also used for the second purpose. A codebook transmission method, applied to a terminal, and the method includes: Send the SRS to the network device on the SRS resources in the SRS resource set used for antenna switching, so that the network device obtains the transmission precoding matrix indication TPMI and the transmission precoding matrix corresponding to each SRS resource in the SRS resource set Indicate at least one of the layers corresponding to TPMI; Receive an SRS resource indication sent by a network device, where the SRS resource indication is used to indicate a target SRS resource in the SRS resource set, a target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and the target transmission precoding matrix Indicate at least one of the layers corresponding to TPMI; Perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI. The method according to claim 26, wherein the performing codebook transmission according to at least one of the target transmission precoding matrix indication TPMI and the number of layers corresponding to the target transmission precoding matrix indication TPMI comprises: According to at least one of the target transmission precoding matrix indication TPMI and the number of layers corresponding to the target transmission precoding matrix indication TPMI, codebook transmission is performed on the antenna port of the target SRS resource. A codebook transmission method, applied to a network device, and the method includes: Receiving the SRS sent by the terminal on the SRS resource in the SRS resource set, where the SRS resource set is an SRS resource set used for antenna switching; According to the SRS sent on the SRS resources in the SRS resource set, obtain at least one of the transmission precoding matrix indicator TPMI corresponding to each SRS resource in the SRS resource set and the number of layers corresponding to the transmission precoding matrix indicator TPMI. item: Selecting a target SRS resource from the SRS resources in the SRS resource set; Send an SRS resource indication to the terminal, where the SRS resource indication is used to indicate the target SRS resource, the target transmission precoding matrix indicator TPMI corresponding to the target SRS resource, and the target transmission precoding matrix indicator TPMI corresponding layer At least one of the number, so that the terminal performs coding according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI corresponding to the number of layers The transmission. A sounding reference signal SRS transmission device, applied to a terminal, and the device includes: A resource set acquisition module, configured to acquire a first SRS resource set for the first purpose and a second SRS resource set for the second purpose; The SRS sending module is configured to send the first SRS to the network device on the first target SRS resource in the first SRS resource set, and send the first SRS to the network device on the SRS resource in the second SRS resource set. Two SRS, wherein the antenna port used to transmit the first SRS is different from the antenna port used to transmit the second SRS, so that the network device obtains a channel according to the first SRS and the second SRS information. A channel information acquisition device, which is applied to network equipment, and the device includes: The first information sending module is configured to send second indication information and third indication information to the terminal, the second indication information indicating the first SRS resource set used for the first purpose, and the third indication information indicating the first SRS resource set used for the first purpose. Second SRS resource set for two purposes; The SRS receiving module is configured to receive the first SRS sent by the terminal on the first target SRS resource in the first SRS resource set and the second SRS sent on the SRS resource in the second SRS resource set , Wherein the antenna port used by the terminal to transmit the first SRS is different from the antenna port used by the terminal to transmit the second SRS; The channel information acquisition module is configured to acquire channel information according to the first SRS and the second SRS. A codebook transmission device applied to a terminal, the device comprising: The SRS sending module is used to send SRS to the network device on the SRS resource in the SRS resource set used for antenna switching, so that the network device can obtain the transmission precoding matrix indication corresponding to each SRS resource in the SRS resource set The TPMI and the transmission precoding matrix indicate at least one of the number of layers corresponding to the TPMI; The resource indication receiving module is configured to receive an SRS resource indication sent by a network device, where the SRS resource indication is used to indicate a target SRS resource in the SRS resource set, a target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and The target transmission precoding matrix indicates at least one of the number of layers corresponding to the TPMI; The codebook transmission module is configured to perform codebook transmission according to at least one of the target SRS resource, the target transmission precoding matrix indicator TPMI, and the number of layers corresponding to the target transmission precoding matrix indicator TPMI. A codebook transmission device, applied to network equipment, and the device includes: The SRS receiving module is configured to receive the SRS sent by the terminal on the SRS resources in the SRS resource set, where the SRS resource set is an SRS resource set used for antenna switching; The information acquisition module is configured to acquire the transmission precoding matrix indicator TPMI corresponding to each SRS resource in the SRS resource set and the transmission precoding matrix indicator TPMI corresponding to the SRS resource in the SRS resource set according to the SRS sent on the SRS resource in the SRS resource set. At least one of the layers: A resource selection module, configured to select a target SRS resource from the SRS resources in the SRS resource set; The resource indication sending module is configured to send an SRS resource indication to the terminal, where the SRS resource indication is used to indicate the target SRS resource, the target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and the target transmission precoding The coding matrix indicates at least one of the number of layers corresponding to the TPMI, so that the terminal determines the number of layers corresponding to the target SRS resource, the target transmission precoding matrix indicator TPMI, and the target transmission precoding matrix indicator TPMI. At least one item of the codebook transmission. An electronic device, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor, the computer program being executed by the processor to implement any of claims 1 to 19 One of the steps of the sounding reference signal SRS transmission method, the steps of the channel information acquisition method according to any one of claims 20 to 25, or the codebook according to any one of claims 26 to 28 The steps of the transmission method. A computer-readable storage medium storing a computer program on the computer-readable storage medium, and when the computer program is executed by a processor, the method for transmitting the sounding reference signal SRS according to any one of claims 1 to 19 is realized The steps of the method for acquiring channel information according to any one of claims 20 to 25, or the steps of the method for transmitting a codebook according to any one of claims 26 to 28.

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