CN113300823A

CN113300823A - SRS transmission method, codebook transmission method, device, terminal and medium

Info

Publication number: CN113300823A
Application number: CN202010109137.6A
Authority: CN
Inventors: 施源
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-08-24
Also published as: WO2021164705A1

Abstract

The embodiment of the invention discloses an SRS transmission method, a codebook transmission method, a device, a terminal and a medium, wherein the SRS transmission method comprises the following steps: obtaining a first set of SRS resources for a first purpose and a second set of SRS resources for a second purpose; and transmitting a first SRS to network equipment on a first target SRS resource in the first SRS resource set, and transmitting a second SRS to the network equipment on an SRS resource in the second SRS resource set, wherein an antenna port used for transmitting the first SRS is different from an antenna port used for transmitting the second SRS, so that the network equipment acquires channel information according to the first SRS and the second SRS. By utilizing the embodiment of the invention, the SRS resource with the first purpose can be used for the second purpose, thereby realizing the multiplexing of the SRS resource, saving a part of the SRS resource and improving the utilization rate of the SRS resource.

Description

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

Technical Field

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

Background

In current mobile communication systems, such as a 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 sets) may be configured, each SRS resource set including at least one SRS resource.

At present, SRS resources for antenna switching and SRS resources for codebook transmission need to be configured separately, resulting in a lower SRS resource utilization.

Disclosure of Invention

The embodiment of the invention provides an SRS transmission method, a codebook transmission device, a terminal and a medium, which aim to solve the problem of low SRS resource utilization rate.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a method for transmitting a sounding reference signal SRS, which is applied to a terminal, and the method includes:

obtaining a first set of SRS resources for a first purpose and a second set of SRS resources for a second purpose;

and transmitting a first SRS to network equipment on a first target SRS resource in the first SRS resource set, and transmitting a second SRS to the network equipment on an SRS resource in the second SRS resource set, wherein an antenna port used for transmitting the first SRS is different from an antenna port used for transmitting the second SRS, so that the network equipment acquires channel information according to the first SRS and the second SRS.

In a second aspect, an embodiment of the present invention provides a channel information obtaining method, which is applied to a network device, and the method includes:

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

receiving a first SRS sent by the terminal on a first target SRS resource in the first SRS resource set and a second SRS sent on an SRS resource in the second SRS resource set, wherein an antenna port used by the terminal to send the first SRS is different from an antenna port used by the terminal to send the second SRS;

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

In a third aspect, an embodiment of the present invention provides a codebook transmission method, which is applied to a terminal, and is characterized in that the method includes:

sending an SRS to network equipment on an SRS resource in an SRS resource set for antenna switching so that the network equipment acquires at least one of a Transmission Precoding Matrix Indication (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the TPMI;

receiving an SRS resource indication sent by network equipment, wherein the SRS resource indication is used for indicating at least one of a target SRS resource in the SRS resource set, a target Transmission Precoding Matrix Indication (TPMI) corresponding to the target SRS resource and the number of layers corresponding to the target Transmission Precoding Matrix Indication (TPMI);

and carrying out 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, an embodiment of the present invention provides a codebook transmission method, which is applied to a network device, and the method includes:

receiving an SRS sent by a terminal on an SRS resource in an SRS resource set, wherein the SRS resource set is used for antenna switching;

according to the SRS sent on the SRS resource in the SRS resource set, at least one of a Transmission Precoding Matrix Indication (TPMI) corresponding to each SRS resource in the SRS resource set and the number of layers corresponding to the TPMI is obtained:

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

and sending an SRS resource indication to the terminal, wherein the SRS resource indication is used for indicating the target SRS resource, a target Transmission Precoding Matrix Indication (TPMI) corresponding to the target SRS resource and at least one of the number of layers corresponding to the TPMI, so that the terminal can perform codebook transmission according to the target SRS resource, the target Transmission Precoding Matrix Indication (TPMI) and at least one of the number of layers corresponding to the target Transmission Precoding Matrix Indication (TPMI).

In a fifth aspect, an embodiment of the present invention provides an apparatus for transmitting a sounding reference signal SRS, which is applied to a terminal, and the apparatus includes:

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

an SRS transmission module, configured to transmit a first SRS to a network device on a first target SRS resource in the first SRS resource set, and transmit a second SRS to the network device on an SRS resource in the second SRS resource set, where an antenna port used for transmitting the first SRS is different from an 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 a sixth aspect, an embodiment of the present invention provides a channel information obtaining apparatus, which is applied to a network device, and the apparatus includes:

a first information sending module, configured to send second indication information and third indication information to a terminal, where the second indication information indicates a first SRS resource set for a first purpose, and the third indication information indicates a second SRS resource set for a second purpose;

an SRS receiving module, configured to receive a first SRS that is sent by the terminal on a first target SRS resource in the first SRS resource set and a second SRS that is sent on an SRS resource in the second SRS resource set, where an antenna port used by the terminal to send the first SRS is different from an antenna port used by the terminal to send the second SRS;

and the channel information acquisition module is used for acquiring channel information according to the first SRS and the second SRS.

In a seventh aspect, an embodiment of the present invention provides a codebook transmission apparatus, which is applied to a terminal, and the apparatus includes:

an SRS sending module, configured to send an SRS to a network device on an SRS resource in an SRS resource set for antenna switching, so that the network device obtains at least one of a Transmission Precoding Matrix Indicator (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the TPMI;

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

and the codebook transmission module is used for carrying out codebook transmission according to at least one of 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).

In an eighth aspect, an embodiment of the present invention provides a codebook transmission apparatus, which is applied to a network device, and the apparatus includes:

the terminal comprises an SRS receiving module, a switching module and a switching module, wherein the SRS receiving module is used for receiving an SRS sent by the terminal on an SRS resource in an SRS resource set, and the SRS resource set is used for antenna switching;

an information obtaining module, configured to obtain, according to an SRS sent on SRS resources in the SRS resource set, at least one of a Transmission Precoding Matrix Indicator (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the Transmission Precoding Matrix Indicator (TPMI):

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

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

In a ninth aspect, an embodiment of the present invention provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements 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, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps of the transmission method for sounding reference signals, SRS, the steps of the channel information acquisition method, or the steps of the codebook transmission method.

In the embodiment of the invention, the SRS resource with the first purpose can be used for the second purpose, so that the multiplexing of the SRS resource is realized, a part of the SRS resource is saved, and the utilization rate of the SRS resource is improved.

Drawings

FIG. 1 is a diagram illustrating terminal interaction with a network device according to one embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating the relationship between an antenna port and an antenna according to one embodiment of the present invention;

fig. 3 shows a schematic diagram of antenna switching for one embodiment provided by the present invention;

FIG. 4 is a schematic diagram illustrating antenna virtualization according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to the first embodiment of the present invention;

fig. 6 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a second embodiment of the present invention;

fig. 7 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a third embodiment of the present invention;

fig. 8 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a fourth embodiment of the present invention;

fig. 9 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a fifth embodiment of the present invention;

fig. 10 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a sixth embodiment of the present invention;

fig. 11 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a seventh embodiment of the present invention;

fig. 12 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to an eighth embodiment of the present invention;

fig. 13 is a schematic diagram illustrating resource of codebook transmission used for antenna switching according to the ninth embodiment of the present invention;

fig. 14 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a tenth embodiment of the present invention;

fig. 15 is a schematic diagram illustrating resource of codebook transmission used for antenna switching according to the eleventh embodiment of the present invention;

fig. 16 is a schematic diagram illustrating that the resource of codebook transmission is used for antenna switching according to the twelfth embodiment of the present invention;

fig. 17 is a diagram illustrating resource of codebook transmission for antenna switching according to the thirteenth embodiment of the present invention;

fig. 18 is a schematic diagram illustrating resource of codebook transmission for antenna switching according to a fourteenth embodiment of the present invention;

FIG. 19 is a schematic diagram illustrating terminal interaction with a network device according to another embodiment of the present invention;

fig. 20 is a schematic structural diagram illustrating a transmission apparatus for sounding reference signals SRS according to an embodiment of the present invention;

fig. 21 is a schematic structural diagram of a channel information acquiring apparatus according to an embodiment of the present invention;

fig. 22 is a schematic structural diagram of a codebook transmission apparatus according to an embodiment of the present invention;

fig. 23 is a schematic structural diagram of a codebook transmission apparatus according to another embodiment of the present invention;

fig. 24 is a schematic diagram illustrating a hardware structure of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the related art, the Sounding Reference Signal (SRS) Resource Set only supports one usage, for example, the SRS Resource Set (SRS Resource Set) may be used for beam management (beam management), codebook (codebook) transmission, non-codebook (non-codebook) transmission, or antenna switching (antenna switching). The following describes the usage of codebook, nocodewood and antenna switching, respectively.

Application method of codebook

1. A network device (e.g., a base station) obtains a Transmit Precoding Matrix Indicator (TPMI) by measuring an uplink SRS, and indicates the TPMI to a terminal. The terminal performs Physical Uplink Shared Channel (PUSCH) precoding transmission.

2. If an SRS Resource Indicator (SRI) in a Physical Downlink Control Channel (PDCCH) is in a slot (slot) n, the SRS resource indicated by the SRI is the SRS resource of the latest transmission before the PDCCH carrying the SRI.

3. When the terminal performs codebook, the terminal has the following limitations:

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

2) terminal capability reporting supports partial coherence and non-coherence (partial coherence agent), codebook subsets (codebook subsets) cannot be configured to be fully coherent, partially coherent and non-coherent (full coherence partial coherence agent).

3) The terminal capability reporting supports non-coherent (nonCoherent), codebook subsets (codebook subsets) cannot be configured to be fully coherent, partially coherent and non-coherent (fullyandpartialandnocoherenent).

4) If the SRS resource set is used for codebook transmission and the nrofSRS-Ports parameter in the SRS resource set indicates 2 Ports, the codebook subset (codebook subset) should not be configured to be partially coherent and non-coherent (partial anti dnoncoherent); this is because two ports are either coherent (coherent) or noncoherent (noncoherent).

5) The network device may configure, for the terminal, at most one SRS resource set (SRS resource set) for acquiring based on uplink Channel State Information (CSI), where each SRS resource set includes at most two SRS resources. The number of ports contained in the two SRS resources is the same, and the ports are 1, 2 and 4; the SRI indicates that one of the SRS resources is selected.

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

Wherein, table 1 shows SRI indication for codebook based PUSCH transmission (SRI indication for codebook based PUSCH transmission):

TABLE 1

Method for using noncodewood

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

2. the network equipment can configure each SRS resource set to comprise y resources, wherein y is less than or equal to the reporting capacity of the terminal;

3. if the SRI in the PDCCH is in slot n, the SRS resource indicated by the SRI is the SRS resource of the latest transmission before the PDCCH carrying the SRI.

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

1) when DCI 0-1 is scheduled, at least one SRS resource is configured in the SRS resource set;

2) only supporting a single port per SRS resource;

3) in the case that the codebook subset (codebook subset) is a non-codebook (noncodeblok), only one SRS resource set is supported;

4) in the case that the codebook subset (codebook subset) is a non-codebook (noncodeblok), maximally supporting one SRS resource set includes 4 SRS resources;

5) a plurality of SRS resources in one SRS Resource set occupy the same RB (Resource Block, RB);

6) spatial correlation information (spatial correlation info) for simultaneously configuring the SRS resources and configuration of a correlated CSI Reference Signal (CSI-RS) in the SRS resource set are not supported. Wherein, the associated CSI-RS only refers to periodicity and semi-persistence; the objective is to prevent having two pieces of spatial correlation information (spatialrelalationinfo) within one set of SRS resources. If the situation occurs during network scheduling, the method belongs to terminal implementation and does not perform any operation or select one.

Thirdly, the following describes the associated CSI-RS resource of the non-codebook based SRS resource set:

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

1) Allowing the network device to configure an associated Non-Zero Power CSI-RS (NZP CSI-RS) resource for channel measurement for the set of SRS resources for the Non-codebook uplink transmission scheme.

2) Configuring only one associated NZP CSI-RS resource is supported in the SRS resource set. Among them, one terminal may be configured with multiple CSI-RSs for different purposes, including beam signaling (BM), Channel State Information (CSI), Channel Measurement (CM), and the like, where a reference signal of the CM is used. And the resource type of the associated CSI-RS is not limited, that is, the terminal obtains precoding for SRS signal transmission of an SRS resource set for a non-codebook uplink transmission scheme based on the associated NZP CSI-RS resource.

2. SRS resource set associated non-periodic NZP CSI-RS

1) The associated NZP CSI-RS resource ID is indicated by a higher layer parameter CSI-RS;

2) in order to ensure that the terminal determines the processing time required for the transmitted precoding using the associated NZP-CSI-RS resources, the time interval between the last symbol of the associated NZP CSI-RS transmission used for calculating SRS precoding and the first symbol of the SRS transmission 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 reduce the delay between SRS transmission and SRS triggering as much as possible, the associated aperiodic NZP CSI-RS is regulated to be transmitted on a time slot for triggering an SRS resource set;

4) only when the scheduled DCI is not for cross-carrier or cross-Bandwidth Part (BWP) scheduling (cross carrier or cross Bandwidth Part).

3. Set of SRS resources as periodic or semi-persistent

The associated NZP CSI-RS resource ID is indicated by a higher layer parameter association CSI-RS.

Antenna switching using method (for TDD mutual opposite, downlink channel acquisition)

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

2. The SRS resource set is used for antenna switching (antenna switching)

3. The network device reports to the terminal according to the capability of the terminal, and configures an antenna switch for the terminal, specifically, the following antenna switches are provided:

'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 4T ═ 4R. Wherein, xTyR means that the terminal supports x antenna ports for uplink transmission and y antenna ports for downlink reception.

The method for reporting the capability also increases the capability of the terminal. And supports reduced terminal capabilities.

The following is a detailed description of the configuration of SRS resource sets for several terminal capabilities:

1) terminal support 1T2R

The network device configures at most 2 SRS resource sets for a terminal supporting 1T2R, where each SRS resource set has a different resource type (resourceType), that is, a different period; the collocation is periodic/semi-continuous + non-periodic.

Each SRS resource set is configured with 2 SRS resources, and each SRS resource includes 1 port. Within one set of SRS resources, each SRS resource needs to be transmitted on a different symbol. In one SRS resource set, a terminal uses different antenna ports (physical antennas) to transmit different SRS resources; i.e. 1 different physical antenna (which may be a virtual physical antenna, such as one panel in FR 2) for each port in the SRS resource.

2) Terminal support 2T4R

The network device configures at most 2 SRS resource sets for a terminal supporting 2T4R, where each SRS resource set has a different resource type (resourceType), that is, the period is different, and the collocation is periodic/semi-persistent + aperiodic.

Each SRS resource set is configured with 2 SRS resources. In one SRS resource set, each SRS resource comprises 2 ports; within a set of SRS resources, each SRS resource needs to be transmitted on a different symbol; in an SRS resource set, one resource is transmitted from two terminal antenna ports (physical antennas), and the other resource is transmitted from the other two terminal antenna ports (physical antennas); each SRS resource corresponds to 2 different physical antennas; the ports in each SRS resource correspond to 1 different physical antenna.

3) Terminal support 1T4R

The network device configures 0 or 1 SRS resource sets for the terminal supporting 1T4R, and the resource types only support 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, 2 SRS resource sets are configured at most, including 0 SRS resource sets, but the combination of periodic/semi-persistent/aperiodic SRS resource sets is not limited.

For 1T4R, the periodic/semi-persistent enforcement can only configure one SRS resource set. Configuring 4 SRS resources, wherein each SRS resource comprises 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; i.e. the ports in each SRS resource correspond to a different physical antenna.

4) Terminal support 1T4R

The network equipment configures 0 or 2 SRS resource sets for the terminal supporting 1T4R, wherein the resource type (resourceType) only supports aperiodic; either 2 aperiodic SRS resource sets are not supported or are mandatory to be configured, i.e. 1 aperiodic SRS resource set is not supported at this time.

4 SRS resources are configured in two SRS resource sets, wherein each SRS resource comprises 1 port; the SRS resources respectively configured in the two SRS resource sets are 2+2, 1+3 or 3+ 1; the values of alpha, p0, pathloss reference signals (pathlossReferenceRS) and SRS power control adjustment states (SRS-powercontrol adjustment states) for the two sets of SRS resources remain the same.

Wherein two SRS resource sets are triggered simultaneously by one DCI. Each set of SRS resources needs to be transmitted on two different slots.

The following explains the non-periodicity: only SRS transmission on the last 6 symbols is currently supported; if transmission over 14 symbols is supported, the restriction on this different slot can be removed; the slot offset (offset) of all SRS resources in the aperiodic SRS resource set is configured at the level of the SRS resource set, that is, the SRS resources in the SRS resource set are all on the same slot; therefore, it is required to ensure that GP of antenna switching, 6 symbols cannot put down 4 SRS resources at a time, so two sets of SRS resources need to be forced, and the two sets of SRS resources are on different slots.

The following is an explanation of the period and the semi-persistence: this requirement is not met because the offset (offset) of the resource 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, and even if 4 SRS resources are included in one SRS resource set, the slot offset (slotoffset) at the SRS resource level can be considered to satisfy the GP requirement. Wherein, the SRS resource in one SRS resource set needs to be transmitted on two different symbols. For each SRS resource within the two sets of SRS resources, a different terminal's antenna port is associated.

5) Terminal supporting 1T1R/2T2R/4T4R

The network device configures 2 SRS resource sets at most, and the collocation is periodic/semi-continuous + aperiodic. In this case, the antenna is not switched, or normally transmitted, but this part is added for completeness.

Each SRS resource set is configured with 1 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 transmit antennas.

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

Guard Period (GP) refers to the time between SRS resources within a set of SRS resources. For GP configured, a terminal transmits SRS only, i.e. between two resources, no other signals are allowed to be transmitted. At this time, the SRS resources in one SRS resource set are transmitted in the same slot. The rules for between different time slots are determined by ran 4.

5. Terminal capability report t1r4-t2r4

The terminal expects all SRS resources within the SRS resource set to have the same number of ports 1 for t1r4 and 2 for t2r 4. For completeness, the rule defined in the previous report of terminal capability is to clarify the situation of t1r4-t2r4 at t1r4 or t2r4, and prevent one SRS resource from configuring 1 port and another SRS resource from configuring 2 ports.

6. Terminal capability reports't 1r2','t2r4','t1r4','t1r4-t2r4'

When the usage of the SRS resource sets is antenna switching, the terminal is not expected to be configured or activated with more than 1 SRS resource set in the same slot. Configured refers to periodic or semi-continuous; the activated finger is non-periodic; in the protocol described in t12r, only the SRS resource set supports at most 2, but some do not explicitly specify the collocation of time domain behaviors. In this way, collocation of temporal behavior is described. That is, within the same slot, at most, 1 cycle/half duration +1 aperiodic 1.

Wherein 1t4r aperiodic supports two sets of SRS resources. However, the two SRS resource sets are not in the same slot, so the condition is satisfied.

7. Terminal capability report of't 1r1' or't 2r2' or't 4r4'

When the usage of SRS resource sets is antenna switching, the terminal is not expected to be on the same symbol and is configured or activated with more than 1 SRS resource set. Configured refers to periodic or semi-continuous; the activated finger is non-periodic.

Here, the symbol is the same, because 1t, 2t and 4t correspond to only supporting 1 SRS resource, and the SRS resource includes 1 port, 2 ports and 4 ports, respectively. I.e., the set of SRS resources is one symbol.

In the foregoing background, the present invention provides a schematic diagram of interaction between a terminal and a network device for an SRS transmission method and a channel information acquisition method according to an embodiment. As shown in fig. 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 the terminal with two second SRS resource sets for antenna switching that are aperiodic. The two second SRS resource sets are simultaneously used for one antenna switching.

And S102, the terminal transmits a first SRS to the network equipment on a first target SRS resource in a first SRS resource set, and transmits a second SRS to the network equipment on an SRS resource in a second SRS resource set, wherein an antenna port used for transmitting the first SRS is different from an antenna port used for transmitting the second SRS.

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

S103, the network equipment acquires channel information according to the first SRS and the second SRS.

The antenna port in the embodiment of the present invention may be understood as a transmitting antenna, a receiving antenna, a physical antenna, or an antenna after virtualization. Wherein the antennas after antenna switching are understood to be different transmit or receive antennas.

Referring to fig. 2, the terminal capability supports 2t2r, and the two antennas may be either receive antennas or transmit antennas and are different physical antennas.

2t4r supports that only two antennas can be used as receiving antennas or transmitting antennas, and the remaining antennas can only be used as receiving antennas. As shown in fig. 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. I.e. for transmission, also understood to have 4 antenna ports.

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

In one or more embodiments of the invention, the first use includes at least one of codebook transmission, non-codebook transmission, and beam management.

In one or more embodiments of the invention, the second use includes antenna switching; the acquiring of the channel information in S103 includes acquiring downlink channel information.

In S103, the network device obtains downlink channel information through the mutual difference between the uplink and downlink channels according to the first SRS and the second SRS. The downlink channel information may be used to estimate a codebook index (TMI).

In the embodiment of the invention, the SRS resource used for at least one of codebook transmission, non-codebook transmission and beam management can be used for antenna switching, so that the SRS resource can be multiplexed, a part of SRS resource for antenna switching is saved, and the utilization rate of the SRS resource is improved.

In one or more embodiments of the present invention, the first target SRS resource is: and starting from a second target SRS resource to a forward Mth SRS resource for the first purpose, wherein the second target SRS resource is one SRS resource in a second SRS resource set, M is smaller than or equal to a first preset value, and M is a positive integer.

Optionally, the first target SRS resource is: the SRS resource used for the first use that is closest to the second target SRS resource. I.e., M ═ 1.

For example, the first target SRS resource is the 1 st SRS resource used for at least one of codebook transmission, non-codebook transmission and beam management from the second target SRS resource onward.

Optionally, the second target SRS resource is a first SRS resource in a first second SRS resource set in the time domain.

The following describes aspects of embodiments of the present invention by way of specific examples. Assuming that the first SRS resource set is an SRS resource set used for codebook (codebook) transmission, the terminal may perform antenna switching by using a first target SRS resource in the SRS resource set used for codebook transmission, so that the network device obtains downlink channel information, which is as follows in specific examples:

example 1: the terminal has the capability of supporting 1t2r, that is, the terminal includes 1 antenna port for uplink transmission and 2 antenna ports for downlink reception. x is 1, y is 2, and z is y/x is 2.

The network equipment configures an SRS resource set periodically used for codebook transmission, and the SRS resource in the SRS resource set comprises 1 SRS port.

The SRS resource set configured by the network device and used for antenna switching aperiodically includes 1 SRS resource, and the SRS resource includes 1 SRS port. a 1< z.

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 5, the terminal transmits SRS to the network device on SRS resources 201 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resources 202 within the set of SRS resources for antenna switching.

Here, an antenna port (i.e., antenna port 0) used by the terminal to transmit the SRS on the SRS resource 201 is different from an antenna port (i.e., antenna port 1) used to transmit the SRS on the SRS resource 202. The SRS resource 201 and the SRS resource 202 are one complete antenna switching resource. The terminal does not desire to be configured with SRS resources for other purposes in one complete antenna switching resource. The SRS resource 201 is used not only for codebook transmission but also for antenna switching, and therefore, the SRS resource 201 is a resource for resource multiplexing.

The SRS resource 201 is an SRS resource that is within the set of SRS resources used for codebook transmission, is before the SRS resource 202, and is closest to the SRS resource 202.

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

Example 2: the terminal has the capability of supporting 1t4r, that is, the terminal includes 1 antenna port for uplink transmission and 4 antenna ports for downlink reception. x is 1, y is 4, and z is y/x is 4.

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

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 6, the terminal transmits SRS to the network device on SRS resource 203 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resource 204, SRS resource 205, and SRS resource 206 within the set of SRS resources for antenna switching.

The antenna port used by the terminal to transmit the SRS on the SRS resource 203 is different from the antenna port used by the terminal to transmit the SRS on the SRS resource switched by any one antenna. That is, the antenna port (i.e., antenna port 0) used by the terminal to transmit the SRS on the SRS resource 203 is different from each of the following ports: an antenna port used for transmitting the SRS on SRS resource 204 (i.e., antenna port 1), an antenna port used for transmitting the SRS on SRS resource 205 (i.e., antenna port 2), and an antenna port used for transmitting the SRS on SRS resource 206 (i.e., antenna port 3). SRS resource 203 to SRS resource 206 are one complete antenna switching resource.

SRS resource 203 is an SRS resource within the set of SRS resources used for codebook transmission, preceding SRS resource 204 and closest to SRS resource 204. SRS resource 204 is the first SRS resource within the set of SRS resources for antenna switching.

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

Example 3: the terminal has the capability of supporting 1t4r, that is, the terminal includes 1 antenna port for uplink transmission and 4 antenna ports for downlink reception. x is 1, y is 4, and z is y/x is 4.

The network equipment configures two SRS resource sets which are used for antenna switching in an aperiodic way, wherein the two SRS resource sets comprise 3 SRS resources in total, and one SRS resource comprises 1 SRS port. a 3< z. The allocation modes of the 3 SRS resources in the two SRS resource sets are two, namely: the first set of SRS resources includes 1 SRS resource and the second set of SRS resources includes 2 SRS resources. The second method comprises the following steps: the first set of SRS resources includes 2 SRS resources and the second set of SRS resources includes 1 SRS resource, i.e., two sets of SRS resources for antenna switching as shown in fig. 7.

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 7, the terminal transmits SRS to the network device on SRS resource 207 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resource 208, SRS resource 209 and SRS resource 210 within the set of SRS resources for antenna switching.

The antenna port (i.e., antenna port 0) used by the terminal to transmit the SRS on the SRS resource 207 is different from the antenna port used to transmit the SRS on the SRS resource switched by any one antenna. That is, the antenna port (i.e., antenna port 0) used by the terminal to transmit the SRS on the SRS resource 207 is different from each of the following ports: an antenna port used for transmitting the SRS on SRS resource 208 (i.e., antenna port 1), an antenna port used for transmitting the SRS on SRS resource 209 (i.e., antenna port 2), and an antenna port used for transmitting the SRS on SRS resource 210 (i.e., antenna port 3). SRS resource 207 to SRS resource 210 are one complete antenna switching resource.

SRS resource 207 is an SRS resource within the set of SRS resources for codebook transmission that is before SRS resource 208 and closest to SRS resource 208. SRS resource 208 is a first SRS resource within a first set of SRS resources for antenna switching.

In addition, the network device receives the SRS transmitted by the terminal from the SRS resource 207 to the SRS resource 210, and acquires downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS transmitted from the SRS resource 207 to the SRS resource 210.

Example 4: the terminal has the capability of supporting 2t4r, that is, the terminal includes 2 antenna ports for uplink transmission and 4 antenna ports for downlink reception. x is 2, y is 4, and z is y/x is 2.

The network device configures a periodic SRS resource set for codebook transmission, where an SRS resource in the SRS resource set includes 2 SRS ports, that is, 2t2 r.

The network device configures an SRS resource set for antenna switching, wherein the SRS resource set comprises 1 SRS resource, and one SRS resource comprises 2 SRS ports.

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 8, the terminal transmits SRS to the network device on SRS resources 211 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resources 212 within the set of SRS resources for antenna switching.

The antenna ports (i.e., antenna port 0 and antenna port 1) used by the terminal to transmit the SRS on SRS resource 211 are different from the antenna ports (i.e., antenna port 2 and antenna port 3) used by the terminal to transmit the SRS on SRS resource 212.

SRS resource 211 is an SRS resource within the set of SRS resources used for codebook transmission that is before SRS resource 212 and closest to SRS resource 212.

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

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

Optionally, the first target SRS resource is: the SRS resource closest to the third target SRS resource is used for the first use. I.e., N ═ 1.

For example, the first target SRS resource is the 1 st SRS resource for at least one of codebook transmission, non-codebook transmission and beam management from the third target SRS resource onward.

Optionally, the third target SRS resource is a last SRS resource in a last second SRS resource set in the time domain.

The following describes aspects of embodiments of the present invention by way of specific examples. Assuming that the first SRS resource set is an SRS resource set used for codebook (codebook) transmission, the terminal may perform antenna switching by using a first target SRS resource in the SRS resource set used for codebook transmission, so that the network device obtains downlink channel information, which is specifically exemplified as follows:

the terminal has the capability of supporting 1t2r, that is, the terminal includes 1 antenna port for uplink transmission and 2 antenna ports for downlink reception. x is 1, y is 2, and z is y/x is 2.

The network equipment configures a periodic SRS resource set for codebook transmission, wherein the SRS resource in the SRS resource set comprises 1 SRS port.

The network device configures an aperiodic SRS resource set for antenna switching, wherein the SRS resource set comprises 1 SRS resource, and one SRS resource comprises 1 SRS port. a 1< z.

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 9, the terminal transmits SRS to the network device on SRS resources 214 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resources 213 within the set of SRS resources for antenna switching.

Here, the antenna port (i.e., antenna port 1) used by the terminal to transmit the SRS on SRS resource 213 is different from the antenna port (i.e., antenna port 0) used to transmit the SRS on SRS resource 214.

SRS resource 214 is an SRS resource within the set of SRS resources used for codebook transmission, subsequent to SRS resource 213, and closest to SRS resource 213.

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

In one or more embodiments of the present invention, when the number of SRS resources in the first SRS resource set is multiple, the first target SRS resource is an SRS resource closest to an SRS resource for antenna switching in the first SRS resource set.

The following describes aspects of embodiments of the present invention by way of specific examples. Assume that the first set of SRS resources is a set of SRS resources for codebook (codebook) transmission. The terminal may perform antenna switching by using a first target SRS resource in an SRS resource set used for codebook transmission, so that the network device obtains downlink channel information, which includes the following specific examples:

example 1: as shown in fig. 10, there are two SRS resources within the set of SRS resources used for codebook transmission. There are two sets of SRS resources for antenna switching (i.e., a second set of SRS resources), the first set of SRS resources for antenna switching comprising SRS resources 216 and the second set of SRS resources for antenna switching comprising SRS resources 217 and SRS resources 218.

The SRS resources transmitted due to the two codebooks closer to the resource for antenna switching are SRS resource 215 and SRS resource 219. However, in comparison, although the SRS resource 215 is closer to the resource 216 for antenna switching and the SRS resource 219 is closer to the resource 218 for antenna switching, the SRS resource 215 is closer to the resource for antenna switching. Thus, the first target SRS resource is SRS resource 215. The terminal transmits SRS to the network device on SRS resource 215, SRS resource 216, SRS resource 217, and SRS resource 218, respectively. And the network equipment acquires the downlink channel information according to the SRS sent by the terminal.

Example 2: as shown in fig. 11, there are two SRS resources in the set of SRS resources used for codebook transmission, which are SRS resource 221 and SRS resource 222, respectively. There are two sets of SRS resources for antenna switching (i.e., a second set of SRS resources), the first set of SRS resources for antenna switching including SRS resource 220, and the second set of SRS resources for antenna switching including SRS resource 223 and SRS resource 224.

The SRS resources transmitted by the two codebooks closer to the resource for antenna switching are SRS resource 221 and SRS resource 222. However, in comparison, although the SRS resource 221 is closer to the resource 220 for antenna switching and the SRS resource 222 is closer to the resource 223 for antenna switching, the SRS resource 221 is closer to the resource for antenna switching. Thus, the first target SRS resource is SRS resource 221. The terminal transmits SRS to the network device on SRS resource 220, SRS resource 221, SRS resource 223, and SRS resource 224, respectively. And the network equipment acquires the downlink channel information according to the SRS sent by the terminal.

Example 3: referring to fig. 12, fig. 12 is different from fig. 11 in that, in fig. 12, an SRS resource 222 is closest to a resource for antenna switching. Thus, the first target SRS resource is SRS resource 222. The terminal transmits SRS to the network device on SRS resource 220, SRS resource 222, SRS resource 223 and SRS resource 224, respectively. And the network equipment acquires the downlink channel information according to the SRS sent by the terminal.

In addition, if the number of SRS resources closest to the antenna-switched SRS resource in the first set of SRS resources is multiple, the first target SRS resource is a first SRS resource, a last SRS resource, or a predetermined SRS resource among the multiple SRS resources closest to the antenna-switched SRS resource.

For example, as shown in fig. 13, for two distances: the distance between SRS resource 221 and resource 220 for antenna switching, and the distance between SRS resource 222 and resource 223 for antenna switching are the same. Then the first resource, the last resource or a predetermined resource of

SRS resources

221 and 222 is taken as the first target SRS resource.

In one or more embodiments of the invention, the number of first target SRS resources may be one or more. For example, when the first SRS resource set is an SRS resource set for non-codebook transmission, when the SRS resource set for non-codebook transmission is used for antenna switching, it is equivalent to antenna switching performed by putting together two first target SRS resources in the SRS resource set for non-codebook transmission.

In one or more embodiments of the present invention, in the at least one first location and the at least one second location arranged in the time domain, a time interval between two adjacent locations is less than a predetermined time length (for example, the predetermined time length is 14 symbols or 1 slot); wherein, one position of two adjacent positions is a first position, and the other position is a second position; the at least one first location is a location on a fourth target SRS resource within the second set of SRS resources and the at least one second location is a location on a fifth target SRS resource within the first set of SRS resources. The predetermined time length may be agreed by a protocol, network configuration, or reported by the terminal.

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

Optionally, the fourth target SRS resource comprises at least one of: a first SRS resource in the second SRS resource set, a last SRS resource in the second SRS resource set, a predetermined SRS resource in the second SRS resource set.

Wherein, the order of the SRS resources in the second SRS resource set may be according to the order of the SRS resource IDs or the time domain order.

Optionally, the fifth target SRS resource comprises at least one of: a first SRS resource within the first set of SRS resources, a last SRS resource within the first set of SRS resources, and an SRS resource within the first set of SRS resources that is closest to the SRS resource for the second use.

Alternatively, if the number of SRS resources closest to the SRS resource for the second use is plural, the fifth target SRS resource includes a first SRS resource, a last SRS resource, or a predetermined SRS resource among the plural SRS resources closest to the SRS resource for the second use.

Wherein, the order of the SRS resources in the first SRS resource set may be according to the order of the SRS resource IDs or the time domain order.

Optionally, the first position is a start position of a first symbol of the fourth target SRS resource, an end position of a last symbol of the fourth target SRS resource, or a predetermined position of a symbol between the first symbol and the last symbol of the fourth target SRS resource;

the second position is a start position of a first symbol of the fifth target SRS resource, an end position of a last symbol, or a predetermined position of one symbol between the first symbol and the last symbol of the fifth target SRS resource.

Optionally, the first position is a start position of a first slot of the fourth target SRS resource, an end position of a last slot of the fourth target SRS resource, or a predetermined position of a slot between the first slot and the last slot of the fourth target SRS resource;

the second position is a start position of a first slot of the fifth target SRS resource, an end position of a last slot of the fifth target SRS resource, or a predetermined position of a slot between the first slot and the last slot of the fifth target SRS resource.

The following describes aspects of embodiments of the present invention by way of specific examples. Assuming that the first SRS resource set is an SRS resource set used for codebook (codebook) transmission, the terminal may perform antenna switching by using a first target SRS resource in the SRS resource set used for codebook transmission, so that the network device obtains downlink channel information, which is specifically as follows:

example 1: the terminal has the capability of supporting 2t8r, that is, the terminal includes 2 antenna ports for uplink transmission and 8 antenna ports for downlink reception. x is 2, y is 8, and z is y/x is 4.

The network equipment configures a periodic SRS resource set for codebook transmission, wherein the SRS resource in the SRS resource set comprises 2 SRS ports.

The network device configures an aperiodic SRS resource set for antenna switching, wherein the SRS resource set comprises 3 SRS resources, and one SRS resource comprises 2 SRS ports. a 3< z.

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 14, the terminal transmits SRS to the network device on SRS resource 225 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resource 226, SRS resource 227, and SRS resource 228 for antenna switching, respectively.

The antenna ports (i.e., antenna port 2 and antenna port 3) used by the terminal to transmit the SRS on the SRS resource 225 are different from the following antenna ports: antenna ports employed for transmitting SRS on SRS resource 226 (i.e., antenna port 0 and antenna port 1), antenna ports employed for transmitting SRS on SRS resource 227 (i.e., antenna port 4 and antenna port 5), and antenna ports employed for transmitting SRS on SRS resource 228 (i.e., antenna port 6 and antenna port 7).

The SRS resource 225 is an SRS resource of resource multiplexing, and the SRS resource 225 is used not only for codebook transmission but also for antenna switching. The interval between the initial position (i.e., the second position) of the resource-multiplexed SRS resource 225 and the predetermined position (i.e., the first position) of the first SRS resource 226 within the set of SRS resources for antenna switching is less than a predetermined number of symbols.

In addition, the network device receives the SRS transmitted by the terminal from the SRS resource 225 to the SRS resource 228, and acquires downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS transmitted from the SRS resource 225 to the SRS resource 228.

Example 2: the terminal has the capability of supporting 2t8r, that is, the terminal includes 2 antenna ports for uplink transmission and 8 antenna ports for downlink reception. x is 2, y is 8, and z is y/x is 4.

The network device configures two aperiodic SRS resource sets for antenna switching, where 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 set of SRS resources includes 1 SRS resource (i.e., SRS resource 229), and the second set of SRS resources includes 2 SRS resources (i.e., SRS resource 231 and SRS resource 232).

And the terminal triggers antenna switching according to the SRS resource for antenna switching. With continued reference to fig. 15, the terminal transmits SRS to the network device on SRS resource 230 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resource 229, SRS resource 231, and SRS resource 232 for antenna switching, respectively.

The antenna ports (i.e., antenna port 2 and antenna port 3) used by the terminal to transmit the SRS on the SRS resource 230 are different from the following antenna ports: antenna ports employed for transmitting SRS on SRS resource 220 (i.e., antenna port 0 and antenna port 1), antenna ports employed for transmitting SRS on SRS resource 231 (i.e., antenna port 4 and antenna port 5), and antenna ports employed for transmitting SRS on SRS resource 232 (i.e., antenna port 6 and antenna port 7).

The SRS resource 230 is an SRS resource of resource multiplexing, and the SRS resource 230 is used not only for codebook transmission but also for antenna switching. The interval between the predetermined position (i.e., the second position) of the resource-multiplexed SRS resource 230 and the predetermined position (i.e., the first position) of the last SRS resource 229 before it for antenna switching is less than a predetermined number of symbols. In addition, the interval between the predetermined position (i.e., the second position) of the resource-multiplexed SRS resource 230 and the predetermined position (i.e., the first position) of the latest SRS resource 231 for antenna switching after it is smaller than the predetermined number of symbols.

In addition, the network device receives the SRS transmitted by the terminal from the SRS resource 229 to the SRS resource 232, and acquires downlink channel information through the reciprocity of the uplink and downlink channels according to the SRS transmitted from the SRS resource 229 to the SRS resource 232.

Example 3: the solution of fig. 16 is similar to the solution of fig. 15, and fig. 16 differs from fig. 15 in the first position and the second position. In fig. 16, the number of the first positions and the second positions is two.

Wherein, the second position 1 is the starting position of the first symbol of the SRS resource 230 for codebook transmission, and the second position 2 is the ending position of the last symbol of the SRS resource 230 for codebook transmission.

The resources corresponding to the first position are resources for antenna switching of two antennas closest to the second position 1 and the second position 2, that is, SRS resources 229 and SRS resources 231. The first location 1 is a predetermined location on the SRS resource 229. The first location 2 is a predetermined location on SRS resource 231. The first position 1 is spaced from its adjacent second position 1 by less than a predetermined number of symbols. The first position 2 is spaced from its adjacent second position 2 by less than a predetermined number of symbols.

In one or more embodiments of the present invention, an antenna port used for transmitting the SRS on a sixth target SRS resource is the same as an antenna port used for transmitting the SRS on a seventh target SRS resource, wherein the sixth target SRS resource is an SRS resource which is before the second SRS resource set and is only used for the first purpose, and the seventh target SRS resource is an SRS resource which is after the second SRS resource set and is only used for the first purpose.

For example, the first SRS resource set is a resource set for codebook transmission, and the second SRS resource set is a resource set for antenna switching. Through the embodiment of the invention, the terminal also needs to be quickly switched back to the original antenna port after the antenna switching is carried out, thereby keeping the integrity of codebook transmission.

In one or more embodiments of the present invention, an 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 an antenna port used for transmitting the SRS on the seventh target SRS resource; wherein the seventh target SRS resource is an SRS resource subsequent to the second set of SRS resources and used for only the first purpose.

For example, the first SRS resource set is a resource set for codebook transmission, and the second SRS resource set is a resource set for antenna switching. By the embodiment of the invention, the terminal can not be switched back to the original antenna port for codebook transmission after the antenna switching is carried out.

The scheme of the above embodiment is explained below by specific examples. Assuming that the first SRS resource set is an SRS resource set used for codebook (codebook) transmission, the terminal may perform antenna switching by using a first target SRS resource in the SRS resource set used for codebook transmission, so that the network device obtains downlink channel information, which is specifically as follows:

And the terminal triggers antenna switching according to the SRS resource for antenna switching. As shown in fig. 17, the terminal transmits SRS to the network device on SRS resources 233 within the set of SRS resources for codebook transmission and transmits SRS to the network device on SRS resources 234 within the set of SRS resources for antenna switching.

Here, an antenna port (i.e., antenna port 0) used by the terminal to transmit the SRS on SRS resource 233 is different from an antenna port (i.e., antenna port 1) used to transmit the SRS on SRS resource 234. Since the SRS resource 233 is used not only for codebook transmission but also for antenna switching, the SRS resource 233 realizes resource multiplexing.

SRS resource 233 is an SRS resource within the set of SRS resources for codebook transmission that is before SRS resource 234 and closest to SRS resource 234.

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

In addition, the antenna ports used for transmitting the SRS are not consistent between the last SRS resource used for antenna switching and the succeeding SRS resource used only for codebook transmission. In fig. 17, the antenna port used for transmitting the SRS on SRS resource 234 (i.e., antenna port 1) does not coincide with the antenna port used for transmitting the SRS on SRS resource 235 (i.e., antenna port 0).

Example 2: the solution of fig. 18 is similar to that of fig. 17, with the difference that: in fig. 18, the antenna ports used for transmitting SRS are consistent between the last SRS resource used for antenna switching and the succeeding SRS resource used only for codebook transmission. That is, the antenna port through which the SRS is transmitted on SRS resource 234 (i.e., antenna port 1) coincides with the antenna port through which the SRS is transmitted on SRS resource 235 (i.e., antenna port 1).

In one or more embodiments of the invention, the second set of SRS resources is an aperiodic set of SRS resources.

In one or more embodiments of the invention, the second set of SRS resources and the first set of SRS resources are both aperiodic sets of SRS resources; the second SRS resource set and the first SRS resource set are activated by the same Downlink Control Information (DCI).

In one or more embodiments of the invention, at least one parameter value of the first set of SRS resources and the second set of SRS resources is the same. For example, alpha, p0, pathlossreferences RS, and SRS-PowerControlAdjustemstats for the first and second SRS resource sets are the same.

In one or more embodiments of the present invention, a terminal includes x antenna ports for uplink transmission and y antenna ports for downlink reception; i.e. the terminal capabilities support xTyR.

All second SRS resource sets for the second use collectively include a SRS resources, a < z, z being y/x, x being divisible by y, x, y, z, and a being positive integers.

For example, the second purpose is antenna switching, all the second SRS resource sets for antenna switching include a SRS resources, and a < z, z represents the number of SRS resources required for one complete antenna switching. The SRS resource required for one complete antenna switching refers to an antenna switching resource required for obtaining one complete downlink channel information.

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

For example, the network device implicitly indicates, by a < z, that the first SRS resource set of the terminal is also used for antenna switching, so as to indicate that the terminal performs antenna switching by using a resource multiplexing scheme.

In one or more embodiments of the invention, S103 comprises:

and under the condition that a < z, the network equipment acquires the channel information according to the first SRS and the second SRS. For example, when a < z, the network device acquires downlink channel information according to the first SRS and the second SRS.

In one or more embodiments of the invention, a and z satisfy: and a +1 ═ z.

In one or more embodiments of the present invention, among the SRS resources within the first and second sets of SRS resources arranged in the time domain, a time interval between any two adjacent SRS resources satisfies a minimum time interval range for the second purpose. For example, the minimum time interval range is a minimum time interval range for antenna switching.

In one or more embodiments of the invention, SRS resources within the first set of target SRS resources and the second set of SRS resources have a higher priority for the second use than for uses other than the second use. For instance, SRS resources within the first and second sets of SRS resources have a higher priority for antenna switching than for purposes other than antenna switching.

In one or more embodiments of the invention, S102 comprises:

the method comprises the steps that a terminal sends a first SRS to network equipment on a first target SRS resource in a first SRS resource set and sends a second SRS to the network equipment on an SRS resource in a second SRS resource set under the condition that the terminal receives first indication information sent by the network equipment;

wherein the first indication information indicates that the first SRS resource set is also for a second purpose.

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

In the embodiment of the invention, the terminal carries out resource multiplexing only under the condition that the network equipment indicates the terminal to carry out resource multiplexing by sending the first indication information.

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

Correspondingly, S101 includes: and the terminal receives the second indication information and the third indication information sent by the network equipment.

In one or more embodiments of the invention, S103 comprises:

acquiring channel information according to the second SRS and the first SRS sent on the plurality of first target SRS resources;

alternatively, the first and second electrodes may be,

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

The above describes in detail the use of resources transmitted by a codebook for antenna switching by each example, and the following describes the use of resources transmitted by a non-codebook for antenna switching by one example.

The terminal capability supports 2T4R, and the network device configures an SRS resource set for non-codebook (noncodebore) transmission, where the SRS resource set includes two SRS resources of 1 port, and the two SRS resources have the same comb value and comb offset on one symbol, and the two SRS resources are distinguished by cyclic shift of an SRS sequence. That is, different cs (cycle shift) values are used, and at this time, the SRS resource for non-codebook transmission is not digitally beamformed.

The network device configures a set of SRS resources for antenna switching, wherein one SRS resource is configured within the set of SRS resources.

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

Fig. 19 shows an interaction diagram of a terminal and a network device for a codebook transmission method according to an embodiment of the present invention. As shown in fig. 19, the interaction of the terminal with the network device includes:

s301, the terminal transmits SRS to the network device on SRS resources in the SRS resource set for antenna switching. Correspondingly, the network device receives the SRS transmitted by the terminal on the SRS resource in the SRS resource set for antenna switching.

S302, the network device obtains at least one of a Transmission Precoding Matrix Indicator (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the TPMI according to the SRS transmitted on the SRS resource in the SRS resource set.

S303, the network device selects a target SRS resource from the SRS resources in the SRS resource set.

S304, the network equipment sends SRS resource indication to the terminal, and the SRS resource indication is used for indicating at least one of the target SRS resource, the target TPMI corresponding to the target SRS resource and the layer number corresponding to the target TPMI. Correspondingly, the terminal receives the SRS resource indication sent by the network equipment.

And S305, the terminal transmits the codebook according to at least one of the target SRS resource, the target TPMI and the layer number corresponding to the target TPMI.

In S305, codebook transmission is performed 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 invention, the terminal carries out codebook transmission according to at least one of the target SRS resource in the SRS resource set switched by the antenna, the target Transmission Precoding Matrix Indication (TPMI) and the number of layers corresponding to the target Transmission Precoding Matrix Indication (TPMI). The SRS resource switched by the antenna is used for codebook transmission, the multiplexing of the SRS resource switched by the antenna is realized, the resource transmitted by the codebook is saved, and the utilization rate of the SRS resource is improved.

The following describes an example of antenna-switched SRS resource for codebook transmission.

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

The network device configures at least one SRS resource set for antenna switching, wherein the at least one SRS resource set comprises y/x SRS resources in total, that is, y/x times of antenna switching are carried out, and each SRS resource comprises x SRS ports. That is, x SRS ports are included in the SRS resource at each antenna switching.

And the terminal transmits the SRS to the network equipment on the SRS resource switched by the antenna. And the network equipment obtains y/x TPMI and the number of layers corresponding to each TPMI according to the SRS sent by the terminal on the SRS resource switched by the antenna. The network equipment sends SRS resource indication to the terminal, wherein the SRS resource indication is used for indicating at least one of target SRS resources used for antenna switching, target TPMI corresponding to the target SRS resources and the number of layers corresponding to the target TPMI. And 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 layer number corresponding to the target TPMI.

Fig. 20 is a schematic structural diagram illustrating a transmission apparatus for a sounding reference signal SRS according to an embodiment of the present invention. As shown in fig. 20, a sounding reference signal SRS transmission apparatus 400 includes:

a resource set obtaining module 401, configured to obtain a first SRS resource set for a first purpose and a second SRS resource set for a second purpose;

an SRS transmitting module 402, configured to transmit a first SRS to a network device on a first target SRS resource in a first SRS resource set, and transmit a second SRS to the network device on an SRS resource in a second SRS resource set, where an antenna port used for transmitting the first SRS is different from an 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 invention, the terminal can use the SRS resource with the first purpose for the second purpose, thereby realizing the multiplexing of the SRS resource, saving a part of the SRS resource and improving the utilization rate of the SRS resource.

In one or more embodiments of the invention, the first use includes at least one of codebook transmission, non-codebook transmission, and beam management; and/or, the second use comprises antenna switching; acquiring the channel information includes acquiring downlink channel information.

In one or more embodiments of the present invention, the first target SRS resource is: starting from a second target SRS resource, a forward Mth SRS resource for the first purpose, wherein the second target SRS resource is one SRS resource in a second SRS resource set, M is smaller than or equal to a first preset value, and M is a positive integer;

alternatively, the first and second electrodes may be,

the first target SRS resource is: and an Nth SRS resource for at least one of the first uses from a third target SRS resource, wherein the third target SRS resource is 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 one or more embodiments of the present invention, the second target SRS resource is a first SRS resource in a first and second set of SRS resources in the time domain;

alternatively, the first and second electrodes may be,

the third target SRS resource is a last SRS resource in a last second set of SRS resources in the time domain.

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

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

the at least one first location is a location on a fourth target SRS resource within the second set of SRS resources and the at least one second location is a location on a fifth target SRS resource within the first set of SRS resources.

In one or more embodiments of the invention, the fourth target SRS resource includes at least one of: a first SRS resource in a second SRS resource set, a last SRS resource in the second SRS resource set, and a predetermined SRS resource in the second SRS resource set;

and/or the presence of a gas in the gas,

the fifth target SRS resource includes at least one of: a first SRS resource within the first set of SRS resources, a last SRS resource within the first set of SRS resources, and an SRS resource within the first set of SRS resources that is closest to the SRS resource for the second use.

In one or more embodiments of the present invention, if the number of SRS resources closest to the SRS resource for the second use is plural, the fifth target SRS resource includes a first SRS resource, a last SRS resource, or a predetermined SRS resource among the plural SRS resources closest to the SRS resource for the second use.

In one or more embodiments of the invention, the first position is a starting position of a first symbol of the fourth target SRS resource, an ending position of a last symbol, or a predetermined position of one symbol between the first symbol and the last symbol of the fourth target SRS resource;

and/or the presence of a gas in the gas,

In one or more embodiments of the present invention, the first position is a start position of a first slot of the fourth target SRS resource, an end position of a last slot, or a predetermined position of a slot between the first slot and the last slot of the fourth target SRS resource;

and/or the presence of a gas in the gas,

In one or more embodiments of the present invention, an antenna port used for transmitting the SRS on a sixth target SRS resource is the same as an antenna port used for transmitting the SRS on a seventh target SRS resource, where the sixth target SRS resource is an SRS resource which is before the second SRS resource set and is only used for the first purpose, and the seventh target SRS resource is an SRS resource which is after the second SRS resource set and is only used for the first purpose;

alternatively, the first and second electrodes may be,

an antenna port adopted 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 an antenna port adopted for transmitting the SRS on the seventh target SRS resource; wherein the seventh target SRS resource is an SRS resource that is subsequent to the second set of SRS resources and is only used for at least one item of the first purpose.

In one or more embodiments of the invention, the second set of SRS resources and the first set of SRS resources are both aperiodic sets of SRS resources;

the second SRS resource set and the first SRS resource set are activated by the same downlink control information DCI.

In one or more embodiments of the invention, at least one parameter value of the first set of SRS resources and the second set of SRS resources is the same.

In one or more embodiments of the present invention, a terminal includes x antenna ports for uplink transmission and y antenna ports for downlink reception;

In one or more embodiments of the invention, a and z satisfy: and a +1 ═ z.

In one or more embodiments of the present invention, among the SRS resources within the first and second sets of SRS resources arranged in the time domain, a time interval between any two adjacent SRS resources satisfies a minimum time interval range for the second purpose.

In one or more embodiments of the invention, SRS resources within the first set of target SRS resources and the second set of SRS resources have a higher priority for the second use than for uses other than the second use.

In one or more embodiments of the invention, SRS transmission module 402 is configured to,

under the condition of receiving first indication information sent by network equipment, sending a first SRS to the network equipment on a first target SRS resource in a first SRS resource set, and sending a second SRS to the network equipment on an SRS resource in a second SRS resource set;

Fig. 21 is a schematic structural diagram of a channel information acquiring apparatus according to an embodiment of the present invention. As shown in fig. 21, the channel information acquiring apparatus 500 includes:

a first information sending module 501, configured to send second indication information and third indication information to a terminal, where the second indication information indicates a first SRS resource set for a first purpose, and the third indication information indicates a second SRS resource set for a second purpose;

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

a channel information obtaining module 503, configured to obtain channel information according to the first SRS and the second SRS.

In the embodiment of the invention, the SRS resource with the first purpose is used for the second purpose, so that the network equipment acquires the channel information, the multiplexing of the SRS resource is realized, a part of the SRS resource is saved, and the utilization rate of the SRS resource is improved.

In one or more embodiments of the invention, the first use includes at least one of codebook transmission, non-codebook transmission, and beam management;

and/or the presence of a gas in the gas,

a second use includes antenna switching; acquiring the channel information includes acquiring downlink channel information.

In one or more embodiments of the present invention, a terminal includes x antenna ports for uplink transmission and y antenna ports for downlink reception, where x is divisible by y, and z is y/x, and all second SRS resource sets for a second purpose collectively include a SRS resources; x, y, z and a are positive integers;

the channel information obtaining module 503 is configured to:

and in the case of a < z, acquiring channel information according to the first SRS and the second SRS.

In one or more embodiments of the invention, a and z satisfy: and a +1 ═ z.

In one or more embodiments of the invention, where the number of first target SRS resources is plural,

the channel information acquisition module 503 includes:

a first information obtaining module, configured to obtain channel information according to a first SRS and a second SRS that are sent on a plurality of first target SRS resources;

alternatively, the first and second electrodes may be,

and a second information acquisition module, configured to acquire channel information according to the first SRS and the second SRS that are sent on one of the first target SRS resources.

In one or more embodiments of the present invention, the channel information acquiring apparatus 500 further includes:

and an indication information sending module, 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 the second purpose.

Fig. 22 is a schematic structural diagram of a codebook transmission apparatus according to an embodiment of the present invention. As shown in fig. 22, codebook transmission apparatus 600 includes:

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

a resource indication receiving module 602, 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 an SRS resource set, a target transmission precoding matrix indication TPMI corresponding to the target SRS resource, and at least one of the number of layers corresponding to the target transmission precoding matrix indication TPMI;

a codebook transmission module 603, configured to perform codebook transmission according to at least one of 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.

In one embodiment of the present invention, codebook transmission module 603 is configured to,

and performing codebook transmission on the antenna port of the target SRS resource 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.

Fig. 23 is a schematic structural diagram of a codebook transmission apparatus according to an embodiment of the present invention. As shown in fig. 23, codebook transmission apparatus 700 includes:

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

an information obtaining module 702, configured to obtain, according to an SRS sent on an SRS resource in an SRS resource set, at least one of a Transmission Precoding Matrix Indicator (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the Transmission Precoding Matrix Indicator (TPMI):

a resource selection module 703, configured to select a target SRS resource from SRS resources in the SRS resource set;

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

Fig. 24 is a schematic diagram illustrating a hardware structure of an electronic device 800 according to an embodiment of the present invention, where 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, a user input unit 807, an interface unit 808, a memory 809, a processor 810, and a power supply 811. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 24 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

In an 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 unit 801 receives a first set of SRS resources for a first purpose and a second set of SRS resources for a second purpose from the network device. Alternatively, processor 810 obtains a first set of SRS resources for a first purpose and a second set of SRS resources for a second purpose according to a protocol specification.

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

In another embodiment, the radio frequency unit 801 is configured to send an SRS to the network device on SRS resources in the SRS resource set for antenna switching, so that the network device obtains at least one of a Transmission Precoding Matrix Indicator (TPMI) corresponding to each SRS resource in the SRS resource set and a number of layers corresponding to the Transmission Precoding Matrix Indicator (TPMI);

a radio frequency unit 801, further configured to receive an SRS resource indication sent by the 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 at least one of the number of layers corresponding to the target transmission precoding matrix indication 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.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 801 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 810; in addition, the uplink data is transmitted to the base station. In general, 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. Further, the radio frequency unit 801 can also communicate with a network and other devices through a wireless communication system.

The electronic device provides wireless broadband internet access to the user via the network module 802, such as to assist the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 803 may convert audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output related to a specific function performed by the electronic apparatus 800 (e.g., a call signal reception sound, a 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 for receiving an audio or video signal. The input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics processor 8041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted 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 may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 801 in case of a phone call mode.

The electronic device 800 also includes at least one sensor 805, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 8061 according to the brightness of ambient light and a proximity sensor that can turn off the display panel 8061 and/or the backlight when the electronic device 800 is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of an electronic device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 805 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

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), or the like.

The user input unit 807 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic apparatus. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 8071 (e.g., operations by a user on or near the touch panel 8071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 8071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 810, receives a command from the processor 810, and executes the command. In addition, the touch panel 8071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 8071 can be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation on or near the touch panel 8071, the touch operation is transmitted to the processor 810 to determine the type of the touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of the touch event. Although the touch panel 8071 and the display panel 8061 are shown in fig. 24 as two separate components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the electronic device, and the implementation is not limited herein.

The interface unit 808 is an interface for connecting an external device to the electronic apparatus 800. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the electronic device 800 or may be used to transmit data between the electronic device 800 and external devices.

The memory 809 may be used to store software programs as well as various data. The memory 809 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 809 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 810 is a control center of the electronic device, connects various parts of the whole electronic device by using various interfaces and lines, performs various functions of the electronic device and processes data by running or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby monitoring the whole electronic device. Processor 810 may include one or more processing units; preferably, the processor 810 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.

The electronic device 800 may also include a power supply 811 (e.g., a battery) for powering the various components, and preferably, the power supply 811 may be logically coupled to the processor 810 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the electronic device 800 includes some functional modules that are not shown, and are not described in detail herein.

An embodiment of the present invention further provides an electronic device, which includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned SRS transmission method, channel information acquisition method, or codebook transmission method, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when executed by a processor, the computer program implements each process of the above-mentioned SRS transmission method, channel information acquisition method, or codebook transmission method, and can achieve the same technical effect, and in order to avoid repetition, the computer program is not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A transmission method of Sounding Reference Signals (SRS) is applied to a terminal, and is characterized in that the method comprises the following steps:

2. The method of claim 1,

the first use includes at least one of codebook transmission, non-codebook transmission, and beam management;

and/or the presence of a gas in the gas,

the second use includes antenna switching; the acquiring of the channel information includes acquiring downlink channel information.

3. The method of claim 1,

the first target SRS resource is: starting from a second target SRS resource to a forward Mth SRS resource for the first purpose, wherein the second target SRS resource is one SRS resource in one second SRS resource set, M is smaller than or equal to a first preset value, and M is a positive integer;

alternatively, the first and second electrodes may be,

the first target SRS resource is: an Nth SRS resource for at least one of the first uses starting from a third target SRS resource, wherein the third target SRS resource is one SRS resource in one of the second SRS resource sets, N is less than or equal to a second predetermined value, and N is a positive integer.

4. The method of claim 3,

the second target SRS resource is a first SRS resource in a first second SRS resource set in a time domain;

alternatively, the first and second electrodes may be,

the third target SRS resource is a last SRS resource in the last set of the second SRS resources in the time domain.

5. The method of claim 1,

in at least one first position and at least one second position which are arranged in time domain, the time interval between two adjacent positions is less than a preset time length;

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

the at least one first location is a location on a fourth target SRS resource within the second set of SRS resources, and the at least one second location is a location on a fifth target SRS resource within the first set of SRS resources.

6. The method of claim 5,

the fourth target SRS resource includes at least one of: a first SRS resource within the second SRS resource set, a last SRS resource within the second SRS resource set, a predetermined SRS resource within the second SRS resource set;

and/or the presence of a gas in the gas,

the fifth target SRS resource includes at least one of: a first SRS resource within the first set of SRS resources, a last SRS resource within the first set of SRS resources, an SRS resource within the first set of SRS resources that is closest to the SRS resource for the second use.

7. The method of claim 6, wherein if there are a plurality of SRS resources that are closest to the SRS resource for the second purpose, the fifth target SRS resource comprises a first SRS resource, a last SRS resource, or a predetermined SRS resource among the plurality of SRS resources that are closest to the SRS resource for the second purpose.

8. The method of claim 5,

the first position is a starting position of a first symbol of the fourth target SRS resource, an ending position of a last symbol, or a predetermined position of a symbol between the first symbol and the last symbol of the fourth target SRS resource;

and/or the presence of a gas in the gas,

the second position is a start position of a first symbol of the fifth target SRS resource, an end position of a 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.

9. The method of claim 5,

the first position is a starting position of a first slot of the fourth target SRS resource, an ending position of a last slot of the fourth target SRS resource, or a predetermined position of a slot between the first slot and the last slot of the fourth target SRS resource;

and/or the presence of a gas in the gas,

10. The method according to any one of claims 1 to 9,

transmitting an SRS on a sixth target SRS resource using the same antenna port as that used for transmitting an SRS on a seventh target SRS resource, wherein the sixth target SRS resource is an SRS resource that precedes the second SRS resource set and is only used for the first use, and the seventh target SRS resource is an SRS resource that follows the second SRS resource set and is only used for the first use;

alternatively, the first and second electrodes may be,

an antenna port adopted 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 an antenna port adopted for transmitting the SRS on a seventh target SRS resource; wherein the seventh target SRS resource is an SRS resource that is subsequent to the second set of SRS resources and that is only used for at least one item of the first use.

11. The method according to any of claims 1-9, wherein the second set of SRS resources is an aperiodic set of SRS resources.

12. The method according to any of claims 1 to 9, wherein the second set of SRS resources and the first set of SRS resources are both aperiodic sets of SRS resources;

13. The method according to any one of claims 1 to 9,

at least one parameter value of the first set of SRS resources and the second set of SRS resources is the same.

14. The method according to any one of claims 1 to 9,

the terminal comprises x antenna ports for uplink transmission and y antenna ports for downlink reception;

all of the second set of SRS resources for the second use collectively include a SRS resources, a < z, z being y/x, x being divisible by y, x, y, z, and a being positive integers.

15. The method of claim 14, wherein a < z indicates that the first set of SRS resources is also used for the second purpose.

16. The method of claim 14, wherein a and z satisfy: and a +1 ═ z.

17. The method according to any one of claims 1 to 9,

a time interval between any two adjacent SRS resources, among the SRS resources within the first and second sets of SRS resources arranged in time domain, satisfies a minimum time interval range for the second usage.

18. The method according to any one of claims 1 to 9,

SRS resources within the first and second sets of SRS resources have a higher priority for the second use than for uses other than the second use.

19. The method of any one of claims 1-9, wherein the transmitting a first SRS on a first target SRS resource within the first set of SRS resources to a network device and a second SRS on an SRS resource within the second set of SRS resources to the network device comprises:

under the condition of receiving first indication information sent by the network equipment, sending a first SRS to the network equipment on a first target SRS resource in the first SRS resource set, and sending a second SRS to the network equipment on an SRS resource in the second SRS resource set;

wherein the first indication information indicates that the first set of SRS resources is also for the second use.

20. A channel information acquisition method is applied to network equipment, and is characterized by comprising the following steps:

21. The method of claim 20,

and/or the presence of a gas in the gas,

22. The method of claim 20, wherein the terminal comprises x antenna ports for uplink transmission and y antenna ports for downlink reception, x is divisible by y, and z is y/x; all of the second set of SRS resources for the second use collectively include a SRS resources; x, y, z and a are positive integers;

the acquiring channel information according to the first SRS and the second SRS includes:

and acquiring channel information according to the first SRS and the second SRS under the condition that a < z.

23. The method of claim 22, wherein a and z satisfy: and a +1 ═ z.

24. The method of claim 20, wherein, in the case that the first target SRS resource number is plural,

acquiring channel information according to the first SRS and the second SRS transmitted on the plurality of first target SRS resources;

alternatively, the first and second electrodes may be,

and acquiring channel information according to the first SRS and the second SRS transmitted on one of the first target SRS resources.

25. The method of claim 20, wherein the receiving the terminal sends a first SRS over a first target SRS resource in the first set of SRS resources and a second SRS over an SRS resource in the second set of SRS resources is preceded by:

transmitting first indication information to the terminal, the first indication information indicating that the first SRS resource set is also used for the second purpose.

26. A codebook transmission method is applied to a terminal, and is characterized in that the method comprises the following steps:

27. The method of claim 26, wherein the performing codebook transmission according to at least one of the target Transmission Precoding Matrix Indicator (TPMI) and the number of layers corresponding to the target Transmission Precoding Matrix Indicator (TPMI) comprises:

28. A codebook transmission method is applied to network equipment, and is characterized in that the method comprises the following steps:

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

29. A transmission apparatus of Sounding Reference Signal (SRS) applied to a terminal, the apparatus comprising:

30. A channel information acquisition device applied to a network device is characterized by comprising:

31. A codebook transmission device applied to a terminal is characterized in that the device comprises:

32. A codebook transmission device applied to a network device, the device comprising:

33. An electronic device, comprising a processor, a memory and a computer program stored on the memory and being executable on the processor, the computer program, when executed by the processor, implementing the steps of the sounding reference signal, SRS, transmission method according to any one of claims 1 to 19, the steps of the channel information acquisition method according to any one of claims 20 to 25 or the steps of the codebook transmission method according to any one of claims 26 to 28.

34. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when being executed by a processor, carries out the steps of the method for transmission of sounding reference signals, SRS, according to one of claims 1 to 19, the steps of the method for channel information acquisition according to one of claims 20 to 25 or the steps of the method for transmission of codebooks according to one of claims 26 to 28.