CN111130742B - Uplink SRS transmission method, device and storage medium - Google Patents

Uplink SRS transmission method, device and storage medium Download PDF

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Publication number
CN111130742B
CN111130742B CN201911377487.4A CN201911377487A CN111130742B CN 111130742 B CN111130742 B CN 111130742B CN 201911377487 A CN201911377487 A CN 201911377487A CN 111130742 B CN111130742 B CN 111130742B
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usage
configuration information
srs
network configuration
uplink
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CN111130742A (en
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王化磊
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Priority to CN201911377487.4A priority Critical patent/CN111130742B/en
Publication of CN111130742A publication Critical patent/CN111130742A/en
Priority to PCT/CN2020/113306 priority patent/WO2021128932A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Abstract

The present disclosure relates to the field of communications technologies, and in particular, to an uplink SRS transmission method, apparatus, and storage medium. The method comprises the following steps: receiving network configuration information, the network configuration information including information indicating usage of a set of SRS resources; and sending the uplink SRS according to the network configuration information. The method includes the steps that network configuration information is received through user equipment, wherein the network configuration information comprises information used for indicating usage of an SRS resource set; sending an uplink SRS according to the network configuration information; the condition that the network configuration information only indicates one usage of the SRS resource set in the related technology to cause that resource multiplexing of different usages cannot be supported is avoided, the flexible multiplexing of the SRS resource is realized, and the system overhead is reduced.

Description

Uplink SRS transmission method, device and storage medium
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a Sounding Reference Signal (SRS), and a storage medium.
Background
In The fifth Generation Mobile Communication technology (5G) system, when a network configures a usage (use) of an SRS Resource set (SRS-Resource set) in a Radio Resource Control (RRC) layer, The usage of The SRS Resource set may be set as a codebook (codebook), a non-codebook (non-codebook), an antenna switching (antenna switching), or a beam management (beamManagement). And the user equipment transmits the uplink SRS based on the usage of the configured SRS resource set.
However, in New Radio (NR) Rel-15 and Rel-16, 1 SRS resource set is configured to be 1 usage only, and resource multiplexing of different usages is not supported, thereby causing additional overhead.
Disclosure of Invention
In view of this, the present disclosure provides an uplink SRS transmission method, an uplink SRS transmission device, and a storage medium. The technical scheme comprises the following steps:
according to an aspect of the present disclosure, an uplink SRS transmission method is provided, which is used in a user equipment, and the method includes:
receiving network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
and sending the uplink SRS according to the network configuration information.
In a possible implementation manner, the transmitting an uplink SRS according to the network configuration information includes:
and transmitting the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
In another possible implementation manner, the transmitting the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set includes:
determining at least one of the plurality of usages as the target usage;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
In another possible implementation manner, the transmitting the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set includes:
receiving Media Access Control (MAC) Control Element (CE) signaling, wherein the MAC CE signaling is used for indicating at least one usage of the SRS resource set;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
In another possible implementation manner, the transmitting the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set includes:
receiving Downlink Control Information (DCI), wherein the DCI is used for indicating at least one usage of the SRS resource set;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
According to another aspect of the present disclosure, an uplink SRS transmission method is provided, and is used in a network side device, the method includes:
transmitting network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
and receiving an uplink SRS according to the network configuration information.
In a possible implementation manner, the receiving an uplink SRS according to the network configuration information includes:
and receiving the uplink SRS according to a sending method corresponding to a target usage in the multiple usages of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
In another possible implementation manner, before sending the network configuration information, the method further includes:
and when the network configuration information is configured, setting the usage of the SRS resource set to be a plurality of usages.
In another possible implementation manner, the receiving an uplink SRS according to the network configuration information includes:
transmitting MAC CE signaling indicating at least one usage of the set of SRS resources;
and receiving the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
In another possible implementation manner, the receiving an uplink SRS according to the network configuration information includes:
transmitting DCI indicating at least one usage of the set of SRS resources;
and receiving the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
According to another aspect of the present disclosure, an uplink SRS transmission apparatus is provided, which is used in a user equipment, and the apparatus includes:
a receiving module, configured to receive network configuration information, where the network configuration information includes information indicating usage of a set of SRS resources;
and the sending module is used for sending the uplink SRS according to the network configuration information.
In a possible implementation manner, the transmitting module is further configured to transmit the uplink SRS according to a transmission method corresponding to a target usage method of the multiple usage methods of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
In another possible implementation manner, the sending module is further configured to determine that at least one of the multiple usages is the target usage; and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
In another possible implementation manner, the receiving module is further configured to receive MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set;
the sending module is further configured to send the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
In another possible implementation, the receiving module is further configured to receive DCI, where the DCI is used to indicate at least one usage of the set of SRS resources;
the sending module is further configured to send the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
According to another aspect of the present disclosure, an uplink SRS transmission apparatus is provided, and is used in a network side device, the apparatus includes:
a sending module, configured to send network configuration information, where the network configuration information includes information indicating usage of SRS resource sets;
and the receiving module is used for receiving the uplink SRS according to the network configuration information.
In a possible implementation manner, the receiving module is further configured to receive the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
In another possible implementation manner, the apparatus further includes: and a processing module. The processing module is configured to set the usage of the SRS resource set as multiple usage when the network configuration information is configured.
In another possible implementation manner, the sending module is further configured to send MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set;
the receiving module is further configured to receive the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
In another possible implementation manner, the transmitting module is further configured to transmit DCI, where the DCI is used to indicate at least one usage of the SRS resource set;
the receiving module is further configured to receive the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
According to another aspect of the present disclosure, there is provided a user equipment including: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
and sending the uplink SRS according to the network configuration information.
According to another aspect of the present disclosure, there is provided a network side device, including: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to:
transmitting network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
and receiving an uplink SRS according to the network configuration information.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the above-described method.
The method comprises the steps that network configuration information is received through user equipment, wherein the network configuration information comprises a usage method used for indicating an SRS resource set; sending an uplink SRS according to the network configuration information; the condition that the network configuration information only indicates one usage of the SRS resource set in the related technology to cause that resource multiplexing of different usages cannot be supported is avoided, the flexible multiplexing of the SRS resource is realized, and the system overhead is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a mobile communication system provided in an exemplary embodiment of the present disclosure;
fig. 2 shows a flowchart of an uplink SRS transmission method according to an exemplary embodiment of the present disclosure;
fig. 3 shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure;
fig. 4 shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure;
fig. 5 shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an uplink SRS transmission apparatus according to an exemplary embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an uplink SRS transmission apparatus according to another exemplary embodiment of the present disclosure;
fig. 8 shows a schematic structural diagram of a user equipment provided in an exemplary embodiment of the present disclosure;
fig. 9 shows a schematic structural diagram of a network-side device according to an exemplary embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
In NR Rel-15 or Rel-16, the network may set the usage as one of codebook, non-codebook, antenna switching and beam management when configuring the usage of SRS resource set at RRC layer. I.e. not supporting the same set of SRS resources available for multiple uses.
Further, for the SRS resource set with the usage set as antenna switching, the protocol further specifies: when the SRS resources in the SRS resource set need to be transmitted in the same slot, the SRS resources are configured to be a guard interval of a Y symbol, and in the guard interval, the user equipment does not transmit any other signal, where the guard interval refers to an interval between two adjacent SRS resources in the SRS resource set.
And when the usage is set as codebook or non-codebook or beam management, the protocol further specifies: the user equipment can be configured by high-layer parameter resource mapping in SRS resource, wherein the SRS resource occupies the last 6 symbols of the time slotAdjacent NsE {1,2,4} symbols, where all antenna ports of the SRS resource are mapped to each symbol of the resource.
In summary, in the related art, when the usage of the SRS resource set is set to be different, the corresponding transmission manner of the user equipment is different, and the current Rel-15 or Rel-16 version does not support resource multiplexing with different usage, that is, the SRS resource set configured as a codebook cannot be used for antenna switching; the set of SRS resources used, configured as antenna switching, cannot be used in the codebook, resulting in additional overhead.
The embodiment of the disclosure provides an uplink SRS transmission method, device and storage medium, receiving network configuration information by user equipment, wherein the network configuration information comprises information for indicating the usage of an SRS resource set; sending an uplink SRS according to the network configuration information; the condition that the network configuration information only indicates one usage of the SRS resource set in the related technology to cause that resource multiplexing of different usages cannot be supported is avoided, the flexible multiplexing of the SRS resource is realized, and the system overhead is reduced.
Referring to fig. 1, a schematic structural diagram of a mobile communication system according to an exemplary embodiment of the present disclosure is shown. The mobile communication system may be a Long Term Evolution (LTE) system, or may be a 5G system, where the 5G system is also called a New Radio (NR) system, or may be a next generation mobile communication technology system of 5G, and this embodiment is not limited thereto.
Optionally, the mobile communication system is suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle to internet (V2X) architecture, and the like.
The mobile communication system includes: a network side device 120 and a user device 140.
The Network side device 120 may be a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (NodeB), the device providing the base station function in the 4G network includes an evolved node B (evolved NodeB, eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an Access Point (AP), the device providing the base station function in the 5G system is a gNB, and a node B (ng-eNB) that continues to evolve, the network side device 120 in the embodiment of the present disclosure further includes a device providing the base station function in a new communication system in the future, and the present disclosure does not limit a specific implementation manner of the network side device 120. The access network devices may also include Home base stations (Home enbs, henbs), relays (relays), Pico base stations Pico, etc.
The base station controller is a device for managing a base station, such as a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system.
The network side device 120 includes a base station of the radio access network, a base station controller of the radio access network, and a device on the core network side.
The Core Network may be an Evolved Packet Core (EPC), a 5G Core Network (5G Core Network), or a new Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, User Plane Functions (UPF) providing functions such as packet routing forwarding and Quality of Service (QoS) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.
The network side device 120 and the user equipment 140 establish a wireless connection over a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is NR; or, the wireless air interface may also be a wireless air interface based on a 5G next generation mobile communication network technology standard; alternatively, the wireless air interface may be a wireless air interface based on the 4G standard (LTE system). The network side device 120 may receive the uplink data sent by the user equipment 140 through the wireless connection.
The user equipment 140 may refer to a device in data communication with the network-side device 120. The user equipment 140 may communicate with one or more core networks via a radio access network. The user equipment 140 may be various forms of user equipment, access terminal equipment, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal equipment, mobile device, terminal equipment (terminal equipment), wireless communication device, user agent, or user equipment. The user equipment 140 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc. Fig. 1 is only illustrated by using the user equipment 140 shown as a mobile phone, and the present embodiment does not limit the type of the user equipment 140. The user equipment 140 may receive the downlink data sent by the network-side device 120 through a wireless connection with the network-side device 120.
It should be noted that, when the mobile communication system shown in fig. 1 adopts a 5G system or a 5G next generation mobile communication technology system, the above network elements may have different names in the 5G system or the 5G next generation mobile communication technology system, but have the same or similar functions, and the embodiment of the present disclosure is not limited thereto.
It should be noted that, in the mobile communication system shown in fig. 1, a plurality of network-side devices 120 and/or a plurality of user devices 140 may be included, and one network-side device 120 and one user device 140 are illustrated in fig. 1, but the embodiment of the present disclosure does not limit this.
Next, several exemplary embodiments are adopted to describe the uplink SRS transmission method provided in the embodiments of the present disclosure.
Please refer to fig. 2, which shows a flowchart of an uplink SRS transmission method according to an exemplary embodiment of the present disclosure, and this embodiment illustrates that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
In step 201, the ue receives network configuration information, where the network configuration information includes information indicating usage of SRS resource sets.
Optionally, the network side device sends the network configuration information to the user equipment. Correspondingly, the user equipment receives the network configuration information sent by the network side equipment.
Optionally, the network configuration information is used to display and indicate the usage of the SRS resource set, or the network configuration information is used to implicitly indicate the usage of the SRS resource set.
Optionally, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
Optionally, the user equipment receives the network configuration information sent by the network side equipment through a downlink channel. Illustratively, the Downlink Channel includes a Physical Downlink Control Channel (PDCCH). This embodiment is not limited thereto.
Step 202, the user equipment sends the uplink SRS according to the network configuration information.
And the user equipment sends the uplink SRS to the network side equipment according to the usage of the SRS resource set indicated by the network configuration information.
Optionally, the network side device receives the uplink SRS sent by the user equipment according to the network configuration information.
To sum up, the embodiment of the present disclosure receives, by a user equipment, network configuration information sent by a network side device, where the network configuration information includes information for indicating a usage of an SRS resource set; sending an uplink SRS according to the network configuration information; the condition that the network configuration information only indicates one usage of the SRS resource set in the related technology to cause that resource multiplexing of different usages cannot be supported is avoided, the flexible multiplexing of the SRS resource is realized, and the system overhead is reduced.
It should be noted that, the user equipment sends the uplink SRS according to the network configuration information, which includes but is not limited to several possible implementation manners: the user equipment displays the usage of the indicated SRS resource set according to the network configuration information and sends the uplink SRS; or the user equipment sends the uplink SRS according to the usage of the SRS resource set implicitly indicated by the network configuration information; or the user equipment transmits the uplink SRS according to at least one usage of the SRS resource set indicated by the MAC CE signaling or the DCI. This embodiment is not limited thereto. In the following, the three possible implementations described above are described separately using several exemplary embodiments.
Please refer to fig. 3, which shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure, and this embodiment illustrates that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
In step 301, a user equipment receives network configuration information, where the network configuration information includes information indicating multiple usages of SRS resource sets.
Optionally, the network side device sets the usage of the SRS resource set as multiple usage when configuring the network configuration information.
Optionally, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and a beam management. Alternatively, the usage of the SRS resource set includes at least two of codebook, non-codebook, antenna switching, and beam management.
Optionally, when the network side device configures the network configuration information, the network side device sets the usage of the SRS resource set to at least one of a codebook, a non-codebook, antenna switching, and beam management. I.e., the network configuration information is used to display usage indicating the set of SRS resources.
Optionally, the network side device sends network configuration information, where the network configuration information includes information for indicating usage of the SRS resource set. Correspondingly, the user equipment receives the network configuration information sent by the network side equipment. Wherein the network configuration information comprises information indicating a plurality of usages of the SRS resource sets.
Step 302, the ue transmits the uplink SRS according to the transmission method corresponding to the target usage of the multiple usages indicated by the network configuration information.
Optionally, the target usage is at least one usage among a codebook, a non-codebook, antenna switching, and beam management.
Optionally, the sending method corresponding to the target usage includes a guard interval of Y symbols or continuous symbol mapping. For example, when the target usage includes antenna switching, the corresponding transmission method includes a guard interval of Y symbols. For another example, when the target usage is codebook or non-codebook or beam management, the corresponding transmission method includes continuous symbol mapping.
Illustratively, the target usage includes a guard interval configured as a Y symbol when SRS resources in the SRS resource set need to be transmitted in the same slot during antenna switching, and in the guard interval, the user equipment does not transmit any other signal, where the guard interval is an interval between two adjacent SRS resources in the SRS resource set.
Illustratively, when the target usage is codebook or non-codebook or beam management, any SRS resource in the SRS resource set needs to be mapped on consecutive symbols of a slot. The user equipment transmits the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set, which includes but is not limited to several possible implementation manners:
in one possible implementation, the user equipment determines at least one of the plurality of usages as a target usage; and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
Optionally, the usage of the SRS resource set indicated by the network configuration information includes antenna switching and at least one other usage. After receiving the network configuration information, the user equipment determines that the target usage comprises antenna switching, and transmits the uplink SRS according to a transmission method corresponding to the antenna switching. For example, the transmission method corresponding to antenna switching includes: guard interval of Y symbol.
In another possible implementation manner, the network side device sends an MAC CE signaling to the user equipment, and correspondingly, the user equipment receives the MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set; and the user equipment transmits the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
Optionally, the MAC CE signaling is used to indicate at least one usage of the SRS resource set. The at least one usage indicated by the MAC CE signaling is at least one of a codebook, a non-codebook, antenna switching, and beam management.
Optionally, the target usage is a usage of at least one usage of the set of SRS resources indicated by the MAC CE signaling.
Optionally, the at least one usage of the set of SRS resources indicated by the MAC CE signaling includes: a first usage; alternatively, the second usage; alternatively, the first and second uses.
When the MAC CE signaling is used for indicating the first usage and the second usage, the user equipment transmits the uplink SRS according to the transmission method corresponding to the second usage; when the MAC CE signaling is used for indicating the first method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the first method; and when the MAC CE signaling is used for indicating the second method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the second method.
For example, the first usage is codebook and the second usage is antenna switching. This embodiment is not limited thereto.
In another possible implementation manner, the network side device transmits DCI, and the user equipment receives downlink control information DCI, where the DCI is used to indicate at least one usage of an SRS resource set; and the user equipment transmits the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
Optionally, the DCI is used to indicate at least one usage of SRS resource sets. At least one usage of the set of SRS resources indicated by the DCI is at least one of a codebook, a non-codebook, an antenna switching, and beam management.
Optionally, the at least one usage indicated by the DCI comprises: a first usage; alternatively, the second usage; alternatively, the first and second uses. When the DCI is used for indicating the first usage and the second usage, the user equipment transmits the uplink SRS according to a transmission method corresponding to the second usage; when the DCI is used for indicating the first method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the first method; and when the DCI is used for indicating the second method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the second method.
For example, the first usage is codebook and the second usage is antenna switching. This embodiment is not limited thereto.
Optionally, the network side device receives the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set. Namely, the network side equipment receives the uplink SRS sent by the user equipment according to the sending method corresponding to the target usage. The network side device receives the uplink SRS according to a sending method corresponding to a target usage in the multiple usages of the SRS resource set, which includes but is not limited to several possible implementation manners:
in a possible implementation manner, after the user equipment determines at least one of the multiple usage methods as a target usage method, and transmits the uplink SRS according to a transmission method corresponding to the target usage method, the network side equipment receives the uplink SRS.
In another possible implementation manner, after the network side device transmits a MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set, the network side device receives the uplink SRS according to a transmission method corresponding to a target usage in the at least one usage. Namely, the network side device receives the uplink SRS transmitted by the user equipment according to the transmission method corresponding to the target usage in the at least one usage.
In another possible implementation manner, after the network side device transmits DCI, where the DCI is used to indicate at least one usage of the SRS resource set, the network side device receives the uplink SRS according to a transmission method corresponding to a target usage in the at least one usage. Namely, the network side device receives the uplink SRS transmitted by the user equipment according to the transmission method corresponding to the target usage in the at least one usage.
To sum up, the embodiment of the present disclosure further sets the usage of the SRS resource set to multiple usages when configuring the network configuration information, where the network configuration information is used to display the usage of the SRS resource set, so that the user equipment sends the uplink SRS according to the target usage in the usage of the SRS resource set indicated by the network configuration information, and further ensures the flexibility of SRS resource multiplexing.
Please refer to fig. 4, which shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure, and this embodiment illustrates that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
In step 401, the ue receives network configuration information, where the network configuration information includes information indicating usage of SRS resource sets.
Optionally, when the network side device configures the usage of the SRS resource set, the specific usage of the SRS resource set is not set. It can be understood that the network configuration information at this time is used to implicitly indicate the usage of the SRS resource set.
Optionally, the user equipment receives network configuration information sent by the network side equipment.
Step 402, the user equipment transmits the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
Optionally, the target usage is at least one usage among a codebook, a non-codebook, antenna switching, and beam management.
The user equipment transmits the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set, which includes but is not limited to several possible implementation manners:
in one possible implementation, the user equipment determines at least one of usage of the SRS resource sets as a target usage; and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
Optionally, after receiving the network configuration information, the user equipment determines that the target usage includes antenna switching, and transmits the uplink SRS according to a transmission method corresponding to the antenna switching. For example, the transmission method corresponding to antenna switching includes: guard interval of Y symbol.
In another possible implementation manner, the network side device sends an MAC CE signaling to the user equipment, and correspondingly, the user equipment receives the MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set; and the user equipment transmits the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
Optionally, the at least one usage of the set of SRS resources indicated by the MAC CE signaling is at least one of a codebook, a non-codebook, an antenna switching, and a beam management.
Optionally, the target usage is a usage of at least one usage of the set of SRS resources indicated by the MAC CE signaling.
It should be noted that, for the ue to transmit the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage indicated by the MAC CE signaling, reference may be made to relevant details in the foregoing embodiment, which is not described herein again.
In another possible implementation manner, the network side device transmits DCI, and the user equipment receives downlink control information DCI, where the DCI is used to indicate at least one usage of an SRS resource set; and the user equipment transmits the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
Optionally, the at least one usage of the set of SRS resources indicated by the DCI is at least one of a codebook, a non-codebook, an antenna switching, and beam management.
It should be noted that, for the ue to transmit the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage indicated by the DCI, reference may be made to relevant details in the foregoing embodiment, and details are not repeated here.
The network side device may refer to the relevant details in the above embodiments for receiving the uplink SRS according to the sending method corresponding to the target usage in the multiple usages of the SRS resource set, and details are not described here.
To sum up, when configuring the usage of the SRS resource set, the embodiment of the present disclosure does not set a specific usage of the SRS resource set, that is, the network configuration information is used to implicitly indicate the usage of the SRS resource set, so that the user equipment sends the uplink SRS according to a target usage in the usage of the SRS resource set, thereby further ensuring flexibility of SRS resource multiplexing.
Please refer to fig. 5, which shows a flowchart of an uplink SRS transmission method according to another exemplary embodiment of the present disclosure, and this embodiment illustrates that the method is used in the user equipment shown in fig. 1. The method comprises the following steps.
Step 501, a user equipment receives network configuration information, where the network configuration information includes information indicating usage of SRS resource sets.
Optionally, the user equipment receives network configuration information sent by the network side equipment. In this embodiment, when configuring the network configuration information, the network side device sets the usage of the SRS resource set to 1 usage or multiple usages or does not set a specific usage of the SRS resource set.
Step 502, the user equipment transmits the uplink SRS according to at least one usage indicated by the MAC CE signaling or the DCI.
Optionally, the user equipment receives MAC CE signaling or DCI, where the MAC CE signaling or DCI is used to indicate at least one usage of the SRS resource set. And the user equipment transmits the uplink SRS based on the transmission method corresponding to the target usage in the at least one usage according to the at least one usage indicated by the MAC CE signaling or the DCI.
Optionally, the network side device sends MAC CE signaling or DCI to the user equipment, where the MAC CE signaling or DCI is used to indicate at least one usage of a codebook, a non-codebook, antenna switching, and beam management. Correspondingly, the user equipment receives the MAC CE signaling or the DCI transmitted by the network side equipment.
In this embodiment, if the network side device sets the usage of the SRS resource set to multiple usages when configuring the network configuration information, that is, the network configuration information is used to display the usage indicating the SRS resource set, at least one usage indicated by the MAC CE signaling or the DCI and the multiple usages indicated by the network configuration information have an intersection, or do not have an intersection. This embodiment does not limit this.
Optionally, the at least one usage indicated by the MAC CE signaling or the DCI includes: a first usage; alternatively, the second usage; alternatively, the first and second uses. When the MAC CE signaling or the DCI is used for indicating the first method and the second method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the second method; when the MAC CE signaling or the DCI is used for indicating the first method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the first method; and when the MAC CE signaling or the DCI is used for indicating the second method, the user equipment transmits the uplink SRS according to the transmission method corresponding to the second method.
For example, the first usage is codebook and the second usage is antenna switching. This embodiment is not limited thereto.
The user equipment may refer to relevant details in the above embodiments for transmitting the uplink SRS based on the transmission method corresponding to the target usage in the at least one usage, which is not described herein again.
Optionally, the network side device receives the uplink SRS according to at least one usage indicated by the MAC CE signaling or the DCI. And the network side equipment receives the uplink SRS according to at least one usage indicated by the MAC CE signaling or the DCI and based on a transmission method corresponding to a target usage in the at least one usage.
The network side device may refer to the relevant details in the above embodiments for receiving the uplink SRS based on the sending method corresponding to the target usage in the at least one usage, which is not described herein again.
To sum up, in the embodiment of the present disclosure, after the user equipment receives the MAC CE signaling or the DCI, the user equipment may ignore the network configuration information, and transmit the uplink SRS according to at least one usage indicated by the MAC CE signaling or the DCI and based on a transmission method corresponding to a target usage in the at least one usage, thereby further ensuring flexibility of SRS resource multiplexing.
The following are embodiments of the apparatus of the embodiments of the present disclosure, and for portions of the embodiments of the apparatus not described in detail, reference may be made to technical details disclosed in the above-mentioned method embodiments.
Please refer to fig. 6, which shows a schematic structural diagram of an uplink SRS transmission apparatus according to an exemplary embodiment of the present disclosure. The uplink SRS transmission apparatus may be implemented by software, hardware, or a combination of both, to become all or a part of the user equipment. The uplink SRS transmission device comprises: a receiving module 610 and a transmitting module 620.
A receiving module 610, configured to receive network configuration information, where the network configuration information includes information indicating usage of SRS resource sets;
a sending module 620, configured to send the uplink SRS according to the network configuration information.
In a possible implementation manner, the transmitting module 620 is further configured to transmit the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and beam management.
In another possible implementation manner, the sending module 620 is further configured to determine that at least one of the multiple usages is a target usage; and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
In another possible implementation manner, the receiving module 610 is further configured to receive MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set;
the sending module 620 is further configured to send the uplink SRS according to a sending method corresponding to the target usage in the at least one usage.
In another possible implementation manner, the receiving module 610 is further configured to receive downlink control information DCI, where the DCI is used to indicate at least one usage of SRS resource sets;
the sending module 620 is further configured to send the uplink SRS according to a sending method corresponding to the target usage in the at least one usage.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Please refer to fig. 7, which shows a schematic structural diagram of an uplink SRS transmission apparatus according to another exemplary embodiment of the present disclosure. The uplink SRS transmission apparatus may be implemented by software, hardware, or a combination of both, to become all or a part of the network side device. The uplink SRS transmission device comprises: a transmitting module 710 and a receiving module 720.
A sending module 710, configured to send network configuration information, where the network configuration information includes information indicating usage of SRS resource sets;
a receiving module 720, configured to receive the uplink SRS according to the network configuration information.
In a possible implementation manner, the receiving module 720 is further configured to receive the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
In another possible implementation, the usage of the SRS resource set includes at least one of a codebook, a non-codebook, an antenna switching, and beam management.
In another possible implementation manner, the apparatus further includes: and a processing module. And the processing module is used for setting the usage of the SRS resource set into a plurality of usages when the network configuration information is configured.
In another possible implementation manner, the sending module 710 is further configured to send MAC CE signaling, where the MAC CE signaling is used to indicate at least one usage of the SRS resource set;
the receiving module 720 is further configured to receive the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
In another possible implementation manner, the transmitting module 710 is further configured to transmit DCI, where the DCI is used to indicate at least one usage of SRS resource sets;
the receiving module 720 is further configured to receive the uplink SRS according to the sending method corresponding to the target usage in the at least one usage.
It should be noted that, when the apparatus provided in the foregoing embodiment implements the functions thereof, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Referring to fig. 8, a schematic structural diagram of a user equipment according to an exemplary embodiment of the present disclosure is shown, where the user equipment may be the user equipment 140 in the mobile communication system shown in fig. 1. In this embodiment, a user equipment is taken as an example of a UE in an LTE system or a 5G system for explanation, where the user equipment includes: a processor 81, a receiver 82, a transmitter 83, a memory 84, and a bus 85. The memory 84 is connected to the processor 81 via a bus 85.
The processor 81 includes one or more processing cores, and the processor 81 executes various functional applications and information processing by executing software programs and modules.
The receiver 82 and the transmitter 83 may be implemented as a communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modulation and demodulation module, and the like, for modulating and/or demodulating information and receiving or transmitting the information through a wireless signal.
Memory 84 may be used to store instructions executable by processor 81.
Memory 84 may store at least one application module 86 that functions as described. The application modules 86 may include: a receiving module 861 and a transmitting module 862.
The processor 81 is configured to execute the receiving module 861 to implement the functions related to the receiving step performed by the user equipment in the above-described method embodiments; the processor 81 is configured to execute the sending module 862 to implement the functions related to the sending step performed by the user equipment in the above-described various method embodiments.
Further, the memory 84 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
Referring to fig. 9, a schematic structural diagram of a network-side device according to an exemplary embodiment of the present disclosure is shown. In this embodiment, a network side device is an eNB in an LTE system, or a gNB in a 5G system, and the network side device includes: a processor 91, a receiver 92, a transmitter 93, a memory 94 and a bus 95. The memory 94 is connected to the processor 91 by a bus 95.
The processor 91 includes one or more processing cores, and the processor 91 executes various functional applications and information processing by executing software programs and modules.
The receiver 92 and the transmitter 93 may be implemented as a communication component, which may be a communication chip, and the communication chip may include a receiving module, a transmitting module, a modulation and demodulation module, and the like, for performing modulation and demodulation on information and receiving or transmitting the information through a wireless signal.
Memory 94 may be used to store processor 101 executable instructions.
Memory 94 may store at least one application module 96 that functions as described. The application modules 96 may include: a transmitting module 961 and a receiving module 962.
The processor 91 is configured to execute the sending module 961 to implement the functions of the sending step performed by the user equipment in the above-described embodiments of the method; the processor 91 is configured to execute the receiving module 962 to implement the functions related to the receiving step performed by the user equipment in the above-described method embodiments.
Further, the memory 94 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (15)

1. A method for transmitting an uplink Sounding Reference Signal (SRS), which is used in User Equipment (UE), comprises:
receiving network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
sending an uplink SRS according to the network configuration information;
wherein, the usage of the SRS resource set comprises at least two of codebook, non-codebook, antenna switching and beam management.
2. The method of claim 1, wherein the transmitting the uplink SRS according to the network configuration information comprises:
and transmitting the uplink SRS according to a transmission method corresponding to a target usage in the multiple usages of the SRS resource set.
3. The method according to claim 1 or 2, wherein the transmitting the uplink SRS according to the transmission method corresponding to the target usage among the multiple usages of the SRS resource set comprises:
determining at least one of the plurality of usages as the target usage;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage.
4. The method according to claim 1 or 2, wherein the transmitting the uplink SRS according to the transmission method corresponding to the target usage among the multiple usages of the SRS resource set comprises:
receiving media access control (MAC CE) signaling, wherein the MAC CE signaling is used for indicating at least one usage of the SRS resource set;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
5. The method according to claim 1 or 2, wherein the transmitting the uplink SRS according to the transmission method corresponding to the target usage among the multiple usages of the SRS resource set comprises:
receiving Downlink Control Information (DCI), wherein the DCI is used for indicating at least one usage of the SRS resource set;
and transmitting the uplink SRS according to the transmission method corresponding to the target usage in the at least one usage.
6. An uplink SRS transmission method, which is used in a network side device, is characterized in that the method comprises:
transmitting network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
receiving an uplink SRS according to the network configuration information;
the usage of the SRS resource set comprises at least two usages of a codebook, a non-codebook, antenna switching and beam management.
7. The method of claim 6, wherein the receiving an uplink SRS according to the network configuration information comprises:
and receiving the uplink SRS according to a sending method corresponding to a target usage in the multiple usages of the SRS resource set.
8. The method according to claim 6 or 7, wherein before sending the network configuration information, further comprising:
and when the network configuration information is configured, setting the usage of the SRS resource set to be a plurality of usages.
9. The method according to claim 6 or 7, wherein the receiving an uplink SRS according to the network configuration information comprises:
transmitting MAC CE signaling indicating at least one usage of the set of SRS resources;
and receiving the uplink SRS according to a sending method corresponding to a target usage in the at least one usage.
10. The method according to claim 6 or 7, wherein the receiving an uplink SRS according to the network configuration information comprises:
transmitting DCI indicating at least one usage of the set of SRS resources;
and receiving the uplink SRS according to a sending method corresponding to a target usage in the at least one usage.
11. An uplink SRS transmission device, for use in a user equipment, the device comprising:
a receiving module, configured to receive network configuration information, where the network configuration information includes information indicating usage of a set of SRS resources;
a sending module, configured to send an uplink SRS according to the network configuration information;
wherein, the usage of the SRS resource set comprises at least two of codebook, non-codebook, antenna switching and beam management.
12. An uplink SRS transmission apparatus, configured to be used in a network side device, the apparatus comprising:
a sending module, configured to send network configuration information, where the network configuration information includes information indicating usage of SRS resource sets;
a receiving module, configured to receive an uplink SRS according to the network configuration information;
wherein, the usage of the SRS resource set comprises at least two of codebook, non-codebook, antenna switching and beam management.
13. A user equipment, the user equipment comprising: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to:
receiving network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
sending an uplink SRS according to the network configuration information;
wherein, the usage of the SRS resource set comprises at least two of codebook, non-codebook, antenna switching and beam management.
14. A network side device, wherein the network side device comprises: a processor; a memory for storing processor-executable instructions;
wherein the processor is configured to:
transmitting network configuration information, the network configuration information including information indicating usage of a set of SRS resources;
receiving an uplink SRS according to the network configuration information;
wherein, the usage of the SRS resource set comprises at least two of codebook, non-codebook, antenna switching and beam management.
15. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 10.
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