CN115085879A - Wireless communication method, terminal equipment and network equipment - Google Patents
Wireless communication method, terminal equipment and network equipment Download PDFInfo
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Abstract
The application provides a wireless communication method, terminal equipment and network equipment, wherein the terminal equipment supports at least one SRS resource used for at least two purposes, so that time-frequency resource overhead corresponding to the SRS resource is reduced. The method of wireless communication comprises: the terminal device sends terminal capability information, which is used to indicate that the terminal device supports at least one SRS resource for at least two purposes.
Description
Technical Field
The present application relates to the field of communications, and more particularly, to a method, a terminal device, and a network device for wireless communication.
Background
In a New Radio (NR) system, a network device may configure one or more Sounding Reference Signal (SRS) Resource sets (Resource sets) for a terminal device, and each SRS Resource set may configure 1 or more SRS resources. For different purposes (e.g., Antenna switching (Antenna switching), uplink transmission (UL transmission), etc.), the network device configures different SRS resource sets, which increases the resource overhead of the SRS resources.
Disclosure of Invention
The application provides a wireless communication method, terminal equipment and network equipment, wherein the terminal equipment supports at least one SRS resource used for at least two purposes, so that time-frequency resource overhead corresponding to the SRS resource is reduced.
In a first aspect, a method of wireless communication is provided, including:
the terminal device sends terminal capability information, which is used to indicate that the terminal device supports at least one SRS resource for at least two purposes.
In a second aspect, a method of wireless communication is provided, including:
the network device receives terminal capability information sent by the terminal device, wherein the terminal capability information is used for indicating that the terminal device supports at least one SRS resource used for at least two purposes.
In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.
Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.
In a fourth aspect, a network device is provided for performing the method of the second aspect or its implementation manners.
In particular, the network device comprises functional modules for performing the methods of the second aspect or its implementations described above.
In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.
In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.
In a seventh aspect, an apparatus is provided for implementing the method in any one of the first to second aspects or implementations thereof.
Specifically, the apparatus includes: a processor configured to call and run the computer program from the memory, so that the apparatus on which the apparatus is installed performs the method according to any one of the first aspect to the second aspect or the implementation manner thereof.
In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.
In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.
A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.
By the technical scheme, the terminal equipment supports at least one SRS resource for at least two purposes, so that the time-frequency resource overhead corresponding to the SRS resource is reduced.
Drawings
Fig. 1 is a schematic diagram of a communication system architecture to which an embodiment of the present application is applied.
Fig. 2 is a schematic diagram of a terminal antenna and a base station antenna provided in the present application.
Fig. 3 is a schematic diagram of a codebook-based PUSCH transmission provided herein.
Fig. 4 is a schematic diagram of a non-codebook based PUSCH transmission provided by the present application.
Fig. 5 is a schematic flow chart of a method of wireless communication provided according to an embodiment of the application.
Fig. 6 is a schematic diagram of a 4-transmit-antenna terminal provided according to an embodiment of the present application.
Fig. 7 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
Fig. 8 is a schematic block diagram of a network device provided according to an embodiment of the present application.
Fig. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
Fig. 10 is a schematic block diagram of an apparatus provided in accordance with an embodiment of the present application.
Fig. 11 is a schematic block diagram of a communication system provided in accordance with an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without making any creative effort with respect to the embodiments in the present application belong to the protection scope of the present application.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: global System for Mobile communications (GSM) System, Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS), Long Term Evolution (Long Term Evolution, LTE) System, Advanced Long Term Evolution (LTE-a) System, New Radio, NR) System, Evolution System of NR System, LTE (LTE-based Access to unlicensed spectrum, LTE-U) System on unlicensed spectrum, NR (NR-based Access to unlicensed spectrum, Non-Terrestrial communication network, UMTS (UMTS) System, UMTS-based Mobile telecommunications System, Wireless Local area network (UMTS) System, Wireless Local Area Network (WLAN) System, General Packet Radio Service (GPRS), GPRS System, LTE-a) System, NR System, Evolution System of NR System, LTE-based Access to unlicensed spectrum, LTE-U) System on unlicensed spectrum, and UMTS-based Wireless Local area network (UMTS) System, Wireless Fidelity (WiFi), fifth Generation communication (5th-Generation, 5G) systems, or other communication systems, etc.
Generally, the conventional Communication system supports a limited number of connections and is easy to implement, however, with the development of Communication technology, the mobile Communication system will support not only conventional Communication but also, for example, Device-to-Device (D2D) Communication, Machine-to-Machine (M2M) Communication, Machine Type Communication (MTC), Vehicle-to-Vehicle (V2V) Communication, or Vehicle networking (V2X) Communication, and the embodiments of the present application can also be applied to these Communication systems.
Optionally, the communication system in the embodiment of the present application may be applied to a Carrier Aggregation (CA) scenario, may also be applied to a Dual Connectivity (DC) scenario, and may also be applied to an independent (SA) networking scenario.
Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; alternatively, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where the licensed spectrum may also be regarded as an unshared spectrum.
Various embodiments are described in conjunction with network Equipment and terminal Equipment, where the terminal Equipment may also be referred to as User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User device.
The terminal device may be a Station (ST) in a WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next generation communication system such as an NR Network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.
In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.).
In this embodiment, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in city (smart city), a wireless terminal device in smart home (smart home), or the like.
By way of example and not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.
In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an Access Point (AP) in a WLAN, a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Node B (eNB or eNodeB) in LTE, a relay Station or an Access Point, a vehicle-mounted device, a wearable device, and a network device (gNB) in an NR network, or a network device in a PLMN network for future evolution, or a network device in an NTN network.
By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a geosynchronous Orbit (GEO) satellite, a High Elliptic Orbit (HEO) satellite, and the like. Alternatively, the network device may be a base station installed on land, water, or the like.
In this embodiment of the present application, a network device may provide a service for a cell, and a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services.
Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.
Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.
Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which are not limited in this embodiment.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may indicate that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, for example, a indicates C, and B may be obtained by C; it can also mean that there is an association between a and B.
In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and is indicated, configure and is configured, and the like.
In the embodiment of the present application, "predefining" may be implemented by saving a corresponding code, table, or other manners that may be used to indicate related information in advance in a device (for example, including a terminal device and a network device), and the present application is not limited to a specific implementation manner thereof. Such as predefined, may refer to what is defined in the protocol.
In the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and for example, may include an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.
In order to better understand the embodiments of the present application, the SRS related to the present application is explained.
The SRS signal is an important reference signal in the 5G/NR system, is widely used in various functions in the NR system,
for example:
1. obtaining (UE sounding procedure for dl CSI acquisition) of downlink Channel State Information (CSI);
2. frequency domain scheduling and precoding determination for uplink transmission;
3. for Antenna Switching (Antenna Switching) functions;
4. for Carrier Switching (Carrier Switching) functions;
5. for positioning functions;
6. cooperating with codebook-based uplink transmission (codebook-based UL transmission);
7. with Non-Codebook based uplink transmission (Non-Codebook based UL transmission).
The network device may configure one terminal device with one or more SRS Resource sets (Resource sets), and each SRS Resource may configure 1 or more SRS resources (SRS resources).
The transmission of SRS can be classified into Periodic (Periodic), Semi-persistent (Semi-persistent), and Aperiodic (Aperiodic), and the details are as follows:
the periodic SRS refers to an SRS transmitted periodically, a period and a slot offset of the SRS are configured by Radio Resource Control (RRC) signaling, and once a terminal receives a corresponding configuration parameter, the terminal transmits the SRS according to a certain period until the RRC configuration fails. Spatial correlation information (Spatial correlation Info) of the periodic SRS is also configured by RRC signaling. The spatial correlation Information may indicate a Channel State Information reference Signal (CSI-RS), a Synchronization Signal Block (SSB), or a reference SRS, and the terminal determines a transmission beam of the third SRS resource according to the indicated reception beam of the CSI-RS/SSB, or determines a transmission beam of the third SRS resource according to the transmission beam of the reference SRS resource.
The semi-persistent SRS is also a periodically transmitted SRS, and a period and a slot offset (slot offset) are configured by RRC signaling, but activation and deactivation signaling thereof is carried through a Media Access Control Element (MAC CE). And the terminal starts to periodically transmit the SRS after receiving the activation signaling until receiving the deactivation signaling. The spatial related information (transmission beam) of the semi-persistent SRS is carried together by the MAC CE activating the SRS.
After receiving the RRC configured period and slot offset, the terminal determines a slot that can be used for transmitting the SRS according to the following formula 1:
wherein, T SRS And T offset For configured period and offset, n f And
respectively numbering radio frames and time slots.
In the NR system, aperiodic SRS transmission is introduced, and a base station may trigger SRS transmission of a terminal through uplink or Downlink Control Information (DCI). The trigger signaling for triggering the aperiodic SRS transmission may be carried by DCI for scheduling Physical Uplink Shared Channel (PUSCH)/Physical Downlink Shared Channel (PDSCH) in the terminal device specific search space, or may be carried by DCI format 2_3 in the common search space. The DCI format 2_3 may be used to trigger aperiodic SRS Transmission, and may also be used to configure a Transmission Power Control (TPC) command of an SRS on a group of terminals or a group of carriers.
After receiving the aperiodic SRS trigger signaling (e.g., DCI), the terminal performs SRS transmission on the set of SRS resources indicated by the trigger signaling. Wherein a slot offset (slot offset) between the trigger signaling and the SRS transmission is configured by a higher layer signaling (RRC). The network side indicates the configuration parameters of each SRS resource set of the terminal in advance through high-level signaling, wherein the configuration parameters comprise time-frequency resources, sequence parameters, power control parameters and the like. In addition, for each SRS resource in the triggered SRS resource set, the terminal may further determine, through spatial correlation information of the resource, a transmission beam used for transmitting the SRS on the resource, where the information is configured to each SRS resource through RRC.
For better understanding of the embodiments of the present application, the antenna switching related to the present application is explained.
Multiple-Input Multiple-Output (MIMO) has been widely used in wireless communication systems, such as 3G, 4G (lte), 5G (nr), WiFi.
With MIMO technology, various forms of gain can be achieved:
spatial diversity gain, beamforming gain (precoding gain), spatial multiplexing gain.
In order to obtain beamforming gain (also called precoding gain) or spatial multiplexing gain, the transmitting end needs to determine a beamforming matrix (or precoding matrix) for signal transmission. For simplicity of description, the following "precoding" and "beamforming" will be mixed and will not be distinguished, and even if any one of the terms is used, the description can be applied to "precoding" and also to "beamforming".
The determination of the precoding matrix often needs to be based on the corresponding transmission channel information. Optionally, on this basis, the determination of the precoding matrix may also be based on channel information, interference information, and the like corresponding to the multi-user MIMO paired users. Therefore, for determining the precoding matrix of terminal a, a basic requirement is to obtain some form of channel information of the transmission channel corresponding to terminal a.
In an actual system, in order to obtain channel information of a transmission channel corresponding to a terminal a, there may be two main methods:
1. the feedback method comprises the following steps: the base station B sends reference information X (e.g., a Channel State information reference Signal (CSI-RS)) and the terminal a measures and obtains information of a corresponding downlink Channel according to the reference information X and then determines corresponding Channel feedback information, where the Channel feedback information may include some of the following forms (which may be a part or all of the following forms). The base station B determines a corresponding Precoding Matrix according to the information fed back by the terminal a, and sends a Physical Downlink Shared Channel (PDSCH) or a Physical Downlink Control Channel (PDCCH) or other Downlink channels or Downlink reference signals, such as Rank Indication (RI) (which indicates the Rank information and the number of transmission streams suggested by the corresponding terminal), Channel Quality Indication (CQI) (which indicates the information related to a Modulation and Coding Scheme (MCS)), and Precoding Matrix Indication (PMI) (which indicates the codebook information) to the terminal a.
2. The method based on channel reciprocity: the terminal A sends SRS information according to the configuration information of the base station B, the base station B obtains a corresponding uplink channel according to the received SRS information, and the base station B can determine a precoding matrix corresponding to the terminal A to be used for sending a PDSCH or a PDCCH or other downlink channels or downlink reference signals according to the reciprocity of the uplink channel and the downlink channel.
The feedback method can be used for a Time Division Duplex (TDD) system and a Frequency Division Duplex (FDD) system; the method based on channel reciprocity is mainly used for TDD system in general, and can also be used for FDD system with partial reciprocity (protocol is not limited).
In order to better understand the embodiments of the present application, the antenna switching related to the present application is described.
As can be seen from the above description for MIMO transmission, the method based on channel reciprocity requires terminal a to transmit an SRS signal. In NR, such SRS signals correspond to SRS resource sets (SRS resource sets) configured as follows:
the usage (usage) of SRS resource sets (SRS-resources set) is "antenna switching" (where one SRS resource set (SRS-resources set) contains 1 or more SRS resources (SRS resources).
The process of sounding (sounding) the SRS signal is also referred to as a terminal sounding process (UE sounding procedure for DL CSI) for acquiring downlink Channel State Information (CSI), and may also be referred to as SRS transmission port switching (SRS Tx port switching).
For a typical smart phone, the number of receive antennas will often be greater than the number of transmit antennas, e.g., terminal a has two receive antennas, but only 1 transmit antenna (single instant of time), as shown in fig. 2. Therefore, if terminal a sends SRS once (when there is a single antenna, the corresponding SRS resource is 1 SRS port (port)), base station B can only obtain 8 × 1 channels, that is, half of the channels have unknown channel information, which may affect obtaining better precoding performance.
To solve the above problem, the network may configure 2 1-port SRS resources, and the two SRS resources are transmitted from 2 antennas at different times, for example, at time T0, an SRS signal corresponding to SRS resource 0 is transmitted from antenna 0, and at time T1, an SRS signal corresponding to SRS resource 1 is transmitted from antenna 1. Thus, through 2SRS transmissions, base station B can obtain 8 × 2 channel information. The 2SRS resources are configured in the same SRS resource set, wherein the corresponding usage is also set as "antennaSwitching".
The number of transmit antennas, the number of receive antennas, and whether "antenna switching" is supported (equivalently, whether SRS Tx port switching is supported) for terminal a may be implemented differently. Reporting may be performed by UE capability (UE capability). The UE capability corresponding to NR of release15 (release15, Rel-15) is reported as follows: T1R2, T1R4, T2R4, T1R4-T2R4, T1R1, T2R2, T4R4, do not support (notSupported), wherein T1R2 corresponds to 1T2R, T2R4 corresponds to 2T4R, T1R4 corresponds to 1T4R, T1R4-T2R4 corresponds to 1T4R or 2T4R, T1R1 corresponds to 1T ═ 1R, T2R2 corresponds to 2T ═ 2R, and T4R4 corresponds to 4T ═ 4R.
For 1T 2R: 0 or 1 or 2SRS resource sets can be configured, and different values can be configured for resource types (resourceType) corresponding to the two resource sets, and the values can be aperiodic (aperiodic), semi-persistent (semi persistent), and periodic (period). When 2SRS resource sets are subsequently configured, the explanation is not repeated. Each resource set contains 2 single-port (1-port) SRS resources, the two SRS resources are transmitted from different symbols (symbols), and the two SRS resources in the same resource correspond to different terminal antenna ports (UE antenna ports).
For 2T 4R: 0 or 1 or 2SRS resource sets may be configured. Each resource set contains 2 srsresources, each SRS resource is a 2SRS port, two SRS resources are transmitted from different symbols (symbols), and a UE antiport pair corresponding to an SRS port pair (SRS port pair) of a second SRS resource in the same resource set is different from an SRS port pair of a first SRS resource.
For 1T 4R: 0 or 1 SRS resource set (which may be periodic or semi-persistent) may be configured. Each resource contains 4 single-port (1-port) SRS resources, each SRS resource is transmitted from a different symbol, and different SRS resources correspond to different UE antenna ports.
For 1T 4R: either 0 or 2SRS resource sets (all configured as aperiodic) may be configured. A total of 4 single-port (1-port) SRS resources in the 2 resource sets are transmitted from different symbols in two different slots. The 4 SRS resources correspond to different UE antenna ports. The 4 SRS resources may have 2SRS resources per resource set, or may have 1 resource set with 3 SRS resources and another resource set with 1 SRS resource. The Radio Resource Control (RRC) configured power parameters corresponding to the two Resource sets are the same, and meanwhile, the aperiodic SRS Resource trigger condition (aperiodicSRS-Resource trigger) of the higher layer parameter is the same, but the slot offset (slotOffset) of the parameter is different.
For 1T ═ 1R, or 2T ═ 2R, or 4T ═ 4R: 0 or 1 or 2SRS resource sets can be configured, each resource set contains 1 SRS resource, and SRS ports corresponding to the SRS resources are 1, 2 or 4 respectively.
If the terminal device reports support "t 1r4-t2r 4", all SRS resources in SRS resource set must be configured with the same SRS port (1 or 2SRS ports).
It should be noted that, different antenna switching configurations are described, and an "xTyR" (usually, an xTyR description method is used in a physical layer protocol, and if x and y are equal, it is often expressed as xT ═ yR) or "txry" (UE capability signaling) is generally described in a higher layer protocol), where x and y represent positive integers greater than 0. The two descriptions are corresponding, or equivalent. In order to simplify identification, the embodiments of the present application use xTyR to denote corresponding antenna switching (antenna switching) collectively, and when x is y, it is denoted as xT is yR.
In order to better understand the embodiments of the present application, the antenna switching intervals related to the present application are described.
In antenna switching, a switching time is required. That is, the interval between SRS resources transmitted in the same slot in the same resource set is Y symbols, where the value of Y is shown in table 1 below.
TABLE 1
| μ | Δf＝2 μ ·15[kHz] | Y [ symbol] |
| 0 | 15 | 1 |
| 1 | 30 | 1 |
| 2 | 60 | 1 |
| 3 | 120 | 2 |
Where different μ corresponds to different Subcarrier spacing (SCS), and Δ f is the Subcarrier spacing (in kHz).
For better understanding of the embodiments of the present application, codebook-based uplink transmission and non-codebook-based uplink transmission related to the present application are described.
When a terminal sends uplink data (PUSCH), precoding processing needs to be performed on the uplink data to obtain an uplink precoding gain. The precoding process is generally divided into two parts: analog domain processing and digital domain processing. The analog domain processing generally uses beamforming to map the rf signal to the physical antenna for the transmitted analog signal. The digital domain processing is performed on digital signals, generally at a baseband, and the digital signals are precoded by using a precoding matrix, and data of a transmission layer is mapped to a radio frequency port. Because the number of radio frequency channels of the terminal is limited, two processing modes are generally adopted at the same time, namely precoding digital signals and then shaping analog signals by adopting beams. The PUSCH transmission is classified into codebook-based transmission and non-codebook-based transmission according to the difference of precoding modes.
In the precoding mode based on the codebook in the uplink, the network side configures an SRS resource set dedicated to codebook transmission for the terminal. The terminal may send SRS on multiple SRS resources in the set, for example, the SRS on each SRS resource uses different beams or precoding, and the network side selects the best SRS resource from the SRS resources to obtain uplink CSI, and simultaneously indicates a resource index to the terminal through an SRS Resource Indication (SRI) so that the terminal performs analog beamforming on data using a beam corresponding to the SRS resource. Meanwhile, the network side may indicate RI and PMI through DCI, and the terminal determines an uplink precoding matrix corresponding to the PMI from a codebook according to the RI and PMI, as shown in fig. 3.
For some terminals supporting the reciprocity of uplink and downlink channels, a precoding mode based on a non-codebook can be supported. The terminal can obtain the uplink channel information by utilizing the downlink channel information, so as to perform uplink analog beamforming and/or digital precoding, and at the moment, the network side does not need to indicate the relevant information of the precoding matrix, so that the DCI overhead can be reduced. Specifically, the network side sends the CSI-RS first, and the terminal determines beams and precoding matrixes of the N layers based on the CSI-RS. The terminal uses the beams and precoding matrices of the N layers to transmit SRS resources of N single ports (i.e., N SRS ports), where the N SRS resources are configured as one SRS resource set for non-codebook transmission. And the network side receives the SRS resources and then measures, selects the best K SRS resources and indicates the corresponding SRI to the terminal, and the terminal determines the adopted transmission layer number, the precoding matrix and the analog beam according to the SRI. The number of the indicated SRS resources is the number of transmission layers, and the precoding matrix and the analog beam adopted by the corresponding SRS resource are the precoding matrix and the beam adopted by the corresponding layer of the data. In this case, the indication of RI and PMI is not required in DCI, as shown in fig. 4.
For different purposes (e.g., Antenna switching (Antenna switching), uplink transmission (UL transmission), etc.), the network configures different SRS resource sets (resource sets), and indicates the SRS resource sets by using corresponding use parameters, where the use parameters may take the following values: beam management (beamManagement), codebook (codebook), non-codebook (non-codebook), antenna switching (antenna switching).
In order to reduce the resource overhead of SRS resource, the system is expected to use the same SRS resource or SRS resources for multiple purposes, and the resource overhead is reduced by sharing the resource. On the other hand, when the terminal of the SRS with different purposes is implemented, the terminal may select an optimized mapping mode of SRS resources and physical antennas for different purposes, thereby achieving the best effect. This may lead to different consequences for the terminal implementation if the network configures the way the shared SRS resources are configured, e.g. performance for different purposes may be degraded. The network may face a dilemma that it cannot be so configured. To solve this problem, we propose a corresponding capability reporting and configuration mode, so as to eliminate the inconsistency of understanding between the network and the terminal.
The technical solution of the present application is detailed below by specific examples.
Fig. 5 is a schematic flow chart of a method 200 of wireless communication according to an embodiment of the present application, and as shown in fig. 5, the method 200 may include, but is not limited to, the following:
s210, a terminal device sends terminal capability information to a network device, wherein the terminal capability information is used for indicating that the terminal device supports at least one SRS resource for at least two purposes;
s220, the network device receives the terminal capability information sent by the terminal device.
In this embodiment, the network device may configure SRS resources for the terminal device based on the terminal capability information. Thereby reducing the time-frequency resource overhead corresponding to the SRS resource.
In the embodiment of the application, each terminal can independently report the own capability, so that the network can perform different configurations aiming at different terminals, and the time-frequency resource overhead corresponding to SRS resources is reduced. Otherwise, the network cannot configure SRS resource sharing for all terminals, that is, different SRS resources must be configured for different purposes for each terminal.
In some embodiments, the terminal capability information is transmitted via terminal capability signaling (UE capability signaling).
In some embodiments, the terminal capability information is transmitted through RRC signaling or MAC CE signaling. Under the condition, the reporting time delay of the terminal capability information is smaller, and the reporting time is more flexible.
In some embodiments, the at least two uses include codebook based uplink transmission (codebook based UL transmission) and antenna switching (antenna switching). In this case, the usage of SRS resource sharing is limited, and the protocol complexity and the network and terminal product implementation complexity can be reduced.
For example, the usage values corresponding to the at least two usages are codebook (codebook) and antenna switching (antennaSwitching), respectively. Of course, a new value may also be introduced, which is similar to codebook, andontunnaswitching or antennaSwitching and dcodeblook, or codebook-antennaSwitching or antennaSwitching-codebook, and this is not limited in the embodiment of the present application.
In some embodiments, the at least two uses include at least two of beam management, non-codebook based uplink transmission, antenna switching. Under the condition, the usage of SRS resource sharing is not limited, more optimization spaces are supported at the cost of protocol complexity, network and terminal product realization complexity, and the time-frequency resource overhead corresponding to the SRS resource can be further reduced.
In some embodiments, the terminal capability information is also used to indicate the at least two uses. That is, a specific use may also be indicated in the terminal capability information. In this case, the terminal can realize a larger degree of freedom, because SRS resource multiplexing under the condition of supporting different purposes can be selected, so that more terminals can support the new function.
In some embodiments, the reporting granularity of the terminal capability information includes one of:
frequency bands, combinations of frequency bands, and frequency bands in combinations of frequency bands.
For example, the terminal capability information is reported according to a frequency band (band) (that is, different frequency bands can independently report corresponding capabilities), that is, the terminal capability information is reported in a band. In this case, the different frequency bands are reported independently, so that the terminal can achieve a greater degree of freedom, for example, the terminal can support on a certain band or certain bands, and the other bands do not support the function, so that more terminals can support the new function.
For another example, the terminal capability information is reported independently according to band combination (band combination), i.e., per band combination. In this case, different frequency band combinations are reported independently, so that the terminal can realize a greater degree of freedom, for example, the terminal may not support the function in a certain frequency band combination, but support the function in another frequency band combination, so that more terminals can support the new function.
For another example, the terminal capability information is reported independently according to each frequency band in a band combination (i.e., the frequency bands in different frequency band combinations can be reported independently), i.e., a band combination. In this case, different frequency band combinations are reported independently, so that the terminal can achieve greater freedom, for example, the terminal may not support the function under a certain Carrier Aggregation (CA), but some bands support the function under another CA combination, so that more terminals can support the new function.
In some embodiments, the at least one SRS resource includes a first SRS resource, wherein the first SRS resource is an SRS resource for an arbitrary number of SRS ports. In this case, SRS resources with different port numbers do not need to be distinguished, and signaling overhead reported by the terminal capability can be reduced.
In some embodiments, an SRS resource of the at least one SRS resource is an SRS resource for a target number of SRS ports. In this case, the SRS resources with different port numbers are distinguished, and terminals implemented by different hardware can support the function as much as possible, that is, the function can be supported by SRS of some ports, and the function is not supported by SRS resources of some ports, so that the terminal implementation has greater flexibility, and more terminals can support the characteristic.
In some embodiments, the target number of SRS ports includes one SRS port and/or a plurality of SRS ports. For example, the terminal capability information includes a first information field for indicating the target SRS port number, as in signaling example 1 in embodiment 1.
In some embodiments, the terminal capability information indicates that SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number are available for at least two purposes, respectively.
In some embodiments, the terminal capability information indicates whether SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number are available for at least two purposes, respectively.
In some embodiments, the target SRS port number is less than or equal to the SRS port number corresponding to the antenna switching supported by the terminal device. Under the condition, the related configuration or capability is limited, so that the complexity of terminal realization can be effectively reduced, and the understanding deviation of different part contents of the protocol can be avoided.
In some embodiments, the target number of SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device. In this case, the related configuration or capability is limited, so that the complexity of terminal implementation can be effectively reduced, and the understanding deviation of different parts of the contents of the protocol can be avoided.
In some embodiments, the maximum number of SRS ports is 4, or the maximum number of SRS ports is 8.
Example 1, the terminal device supporting at least one SRS resource for at least two uses, comprising:
the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource. In this case, multiple uses are supported by one SRS resource set, and signaling overhead is reduced.
In some implementations of example 1, the usage (usage) parameter corresponding to the first set of SRS resources indicates the at least two usages.
For example, the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages. Under the condition, the method can be realized by utilizing the existing value, a new value is not required to be introduced, and the complexity of protocol design is reduced.
For example, the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used to indicate the at least two usages. If the first value is codebook Andandennas switching or antennaSwitchingAndCodeebook. Under the condition, new values are introduced to realize the method, so that the signaling overhead can be reduced.
Example 2, the terminal device supporting at least one SRS resource for at least two uses, comprising:
the terminal device supports multiple groups of SRS resources for at least two purposes, wherein each group of SRS resources in the multiple groups of SRS resources at least comprises the at least one SRS resource.
In some implementations of example 2, the terminal device supports a plurality of first sets of SRS resources, wherein each first set of SRS resources includes the at least one SRS resource included in one of the plurality of sets of SRS resources, and each first set of SRS resources corresponds to the at least two usages. In this case, more usage scenarios, such as a transmit-receive point (TRP) transmission scenario, may be supported.
Example 3, the terminal device supporting at least one SRS resource for at least two uses, comprising:
the terminal device supports a second set of SRS resources and a third set of SRS resources,
the second SRS resource set at least includes the at least one SRS resource, the second SRS resource set corresponds to a first usage, the third SRS resource set at least includes the at least one SRS resource, the third SRS resource set corresponds to a second usage, the first usage and the second usage are different usages, and the second SRS resource set and the third SRS resource set include at least one same SRS resource. It should be noted that the method can be extended to more usage cases, and more SRS resource sets are needed above, and some common functions are included in these sets.
Under the condition, the new function is supported through the existing signaling flow, so that the protocol design complexity can be effectively reduced, and the terminal and network implementation complexity can be reduced.
In some implementations of example 3, the second set of SRS resources and the third set of SRS resources include the same SRS resources. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some implementations of example 3, the second set of SRS resources and the third set of SRS resources further include different SRS resources. In this case, the relevant configuration is not limited, and a larger network configuration optimization space can be provided at the cost of the complexity of terminal implementation.
In some implementations of example 3, the second set of SRS resources includes all SRS resources included in the third set of SRS resources. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some implementations of example 3, the first purpose is antenna switching and the second purpose is codebook-based uplink transmission.
In some embodiments, the terminal device receives first configuration information sent by the network device, where the first configuration information is at least used to indicate a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes.
Specifically, the terminal device may perform corresponding SRS transmission according to the first configuration information.
In some embodiments, the resource type (resourceType) in the SRS resource set (SRS-ResourceSet) corresponding to the fourth SRS resource set may be configured as one of the following: aperiodic, semi-persistent, periodic.
In some embodiments, a usage (usage) parameter corresponding to the fourth set of SRS resources indicates the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used to indicate the at least two usages. For example, the second value may be codebook Andantennaswitching, antennaSwitching AndCodebook, codebook-antennaSwitching, antennaSwitching-codebook, and the like.
In some embodiments, the fourth set of SRS resources corresponds to at least two uses including at least Codebook-based uplink transmission (Codebook-based UL transmission) and antenna switching.
In some embodiments, the terminal device receives second configuration information sent by the network device, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to a third usage and the sixth SRS resource set corresponds to a fourth usage, the third usage and the fourth usage are different usages, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
Specifically, the terminal device may perform corresponding SRS transmission according to the second configuration information.
In some embodiments, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same. The power-related parameters include a reference signal used for path loss calculation, coefficients of path loss calculation, desired received power, and the like. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some embodiments, the resource types (resourceType) corresponding to the fifth SRS resource set and the sixth SRS resource set are the same. Wherein the resource type may be used to indicate the time domain transmission characteristics.
For example, the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set have the same configuration value. For example, the resourceType configuration value is one of the following: aperiodic, semi-persistent, periodic. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some embodiments, the fifth set of SRS resources and the sixth set of SRS resources comprise the same SRS resources. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some embodiments, the fifth set of SRS resources and the sixth set of SRS resources further include different SRS resources. In this case, the relevant configuration is not limited, and a larger network configuration optimization space can be provided at the cost of the complexity of terminal implementation.
In some embodiments, the fifth set of SRS resources includes all SRS resources included in the sixth set of SRS resources. In this case, the related configuration is limited, and the complexity of terminal implementation can be effectively reduced.
In some embodiments, the third purpose is antenna switching and the fourth purpose is codebook-based uplink transmission.
In some embodiments, the RRC information domain corresponding to the fifth SRS resource set is used for antenna switching, and the RRC information domain corresponding to the sixth SRS resource set is used for codebook.
In some embodiments, the terminal device receives third configuration information sent by the network device, where the third configuration information is used to indicate that the terminal device supports the configuration of the fifth SRS resource set and the sixth SRS resource set.
The protocol of the present application is detailed below with examples 1 to 3.
In embodiment 1 (taking 4 transmitting antenna terminals as an example, the method can be generalized to other transmitting antenna terminals), the power class corresponding to the first terminal device supports the transmission with the maximum power of 26dBm, and has 4 transmitting antennas, and each transmitting antenna is for a Power Amplifier (PA) with the maximum transmitting power of 23dB, as shown in fig. 6.
If the network configures PUSCH transmission with 4 antenna ports, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna. This configuration mapping is also applicable to 4-port SRS in antenna switching of 4T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
If the network configures 2-antenna port PUSCH transmission, the total power corresponding to two physical antennas is also 26dBm, and multiple physical antennas do not need to be virtualized into one antenna port. Therefore, a typical mapping relationship between the antenna ports and the physical antennas is as follows: one antenna port directly corresponds to one physical antenna. This configuration mapping is also applicable to 2-port SRS in antenna switching of 2T2R or 2T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
If the network configures the PUSCH transmission of a single antenna port, because the maximum transmission power of the PA corresponding to each physical antenna is only 23dB, a single physical antenna cannot meet the requirement of 26dBm, and thus at least 2 or more physical antennas need to be virtualized into one antenna port. This configuration mapping is not applicable to the 1-port SRS in antenna switching of 1T1R or 1T2R or 1T 4R. Therefore, in this case, it is feasible that the coded base UL transmission and the antenna switching cannot share one SRS resource, otherwise, the downlink performance is lost, because the downlink status information obtained by the base station according to the antenna switching does not match the actual SRS resource.
In some implementations of embodiment 1, to assist the network to perform the relevant configuration better, the first terminal device sends, to the network device, first terminal capability information indicating that the first terminal device supports at least 1 srsrsresource of the following configuration for at least 2 purposes:
SRS resource contains 4 ports;
SRS resource contains 2 ports.
In some implementations of embodiment 1, the network knows that the first terminal device cannot support SRS resource of 1 port for at least 2 uses.
In some implementations of embodiment 1, the first terminal capability information is transmitted via terminal capability signaling (UE capability signaling).
In some implementations of embodiment 1, the at least 2 uses are referred to as codebook based UL transmission and antenna switching.
In some implementations of embodiment 1, signaling example 1:
the first terminal capability information contains one field indicating the number of 1 or more ports, for example,
multi-use SEQUENCE (SIZE (1.. max.)) OF type OPTIONAL
Where Multi-use is an example of the one domain (field), other names may be possible. This is an optional field. The maximum number may be 3, or 4, or a larger number. The type corresponds to the number of ports (e.g., number of SRS ports).
For signaling example 1, indications 2 and 4 in Multi-purpose (Multi-use) reported by the first terminal device.
In some implementations of embodiment 1, signaling example 2:
indicating for 1 or more port numbers respectively whether the first terminal device can, or can support, the corresponding SRS resource for at least 2 uses, e.g.
Where Multi-use is an example of the one domain, other names may be possible. This may be an optional field. The Port1, Port2, and Port4 correspond to the cases of 1 Port, 2 ports, and 4 ports, respectively, and the names are only for example and may be others. They may be optional fields.
For signaling example 2, Port2 and Port4 in Multi-purpose (Multi-use) reported by the first terminal device are supported (supported) and supported (supported).
In some implementations of embodiment 1, signaling example 3:
indicating for 1 or more port numbers respectively whether the first terminal device can, or can support, the corresponding SRS resource for at least 2 uses, e.g.
Where Multi-use is an example of the one domain, other names may be possible. This may be an optional field. The Port1, Port2, and Port4 correspond to the cases of 1 Port, 2 ports, and 4 ports, respectively, and the names are only for example and may be others. They may be optional fields.
For signaling example 3, Port2 and Port4 are reported in the Multi-usage reported by the first terminal device.
In some implementations of embodiment 1, signaling example 4:
indicating for 1 or more port numbers respectively whether the first terminal device can, or can support, the corresponding SRS resource for at least 2 uses, e.g.
Where Multi-use is an example of the one domain, other names may be possible. This may be an optional field. The Port1, Port2, and Port4 correspond to the cases of 1 Port, 2 ports, and 4 ports, respectively, and the names are only for example and may be others. They may be optional fields. supported, notSupported indicate supported, or unsupported, respectively, their specific names may be in other forms.
For signaling example 4, Port2 and Port4 in Multi-use reported by the first terminal device are supported. Or the Port2, the Port4 and the Port1 in the Multi-use reported by the first terminal device are supported, supported and notSupported respectively.
In some implementations, the first terminal capability is reported according to a frequency band (band) (i.e., different frequency bands can independently report corresponding capabilities, per band).
In some implementations, the first terminal capabilities are independently reported in terms of band combination (band combination).
In some implementations, the first terminal capability is reported independently per frequency band in a band combination (i.e., the frequency bands in different band combinations may be reported independently).
In some implementation manners of embodiment 1, a first terminal device receives first configuration information sent by a network device, where the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least 2 uses.
In some implementations, the fourth SRS resource set includes at least SRS resource of 2 ports, and/or includes at least SRS resource of 4 ports.
In some implementations, the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set can be configured as one of the following: aperiodic, semi-persistent, periodic.
In some implementations, the fourth SRS resource set corresponds to at least 2 uses.
In some implementations, the usage parameter indicates at least 2 values, each value indicating 1 different purpose.
In some implementations, the usage parameter indicates 1 value, the 1 indicating the at least 2 uses, e.g., the 1 value is introducing a new value, e.g., like the names codewood and dantennaswitch, antennaSwitching and codewood, codewood-antennaSwitching-codewood.
In some implementations, at least 2 uses correspond to codebook-based UL transmission and antenna switching.
In some implementation manners of embodiment 1, a first terminal device receives second configuration information sent by a network device, where the second configuration information at least indicates a fifth SRS resource set and a sixth SRS resource set.
In some implementations, the fifth SRS resource set corresponds to a third use, the sixth SRS resource set corresponds to a fourth use, and the third use and the fourth use are different uses, the fifth SRS resource set and the sixth SRS resource set containing at least 1 identical SRS resource.
In some implementations, the at least 2 uses (third and fourth uses) correspond to codebook-based UL transmission and antenna switching.
In some implementations, the configuration values of the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
In some implementations, the resourceType configuration value is one of the following: aperiodic, semi-persistent, periodic.
In some implementations, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some implementations, the at least 1 same SRS resource is a 2-port SRS resource, and/or a 4-port SRS resource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set contain the same SRSresource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set may also contain other different SRS resources.
In some implementations, the fifth SRS resource set contains all srsrsresources in the sixth SRS resource set.
In some implementations, the fifth SRS resource set is used for antenna switching, and the sixth SRS resource set is used for coded-based UL transmission.
In some implementations, the usage of the RRC IE field corresponding to the fifth SRS resource set is set to 'antennaSwitching', and the usage of the RRC IE field corresponding to the sixth SRS resource set is set to 'codebook'.
In some implementations of embodiment 1, the first terminal device performs corresponding SRS transmission according to the above configuration (the first configuration information or the second configuration information).
In embodiment 2 (taking 4 transmit antenna terminals as an example, the method may be generalized to other transmit antenna terminals), the power class corresponding to the first terminal device supports transmission with maximum power of 26dBm, and has 4 transmit antennas, and each transmit antenna is for a Power Amplifier (PA) with maximum transmit power of 20dB, as shown in fig. 6.
If the network configures PUSCH transmission with 4 antenna ports, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna. This configuration mapping is also applicable to 4-port SRS in antenna switching of 4T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
If the network configures PUSCH transmission of 2 antenna ports, the total power corresponding to two physical antennas is also 23dBm, which cannot meet the requirement of 26dBm, so at least 2 or more physical antennas need to be virtualized into one antenna port, that is, 4 physical antennas need to be virtualized into 2 antenna ports. This configuration mapping is not applicable to 2-port SRS in antenna switching of 2T2R or 2T 4R. Therefore, in this case, it is feasible that the coded base UL transmission and the antenna switching cannot share one SRS resource, otherwise, the downlink performance is lost, because the downlink status information obtained by the base station according to the antenna switching does not match the actual SRS resource.
If the network configures PUSCH transmission of a single antenna port, because the maximum transmission power of the PA corresponding to each physical antenna is only 20dB, a single or 2 physical antennas cannot meet the requirement of 26dBm, and therefore 4 physical antennas need to be virtualized into one antenna port. This configuration mapping relationship is not applicable to the 1-port SRS in the antenna switching of 1T1R or 1T2R or 1T 4R. Therefore, in this case, it is feasible that the coded base UL transmission and the antenna switching cannot share one SRS resource, otherwise, the downlink performance is lost, because the downlink status information obtained by the base station according to the antenna switching does not match the actual SRS resource.
In some implementations of embodiment 2, in order to assist the network to perform the relevant configuration better, the first terminal device sends, to the network device, first terminal capability information indicating that the first terminal device supports at least 1 srsrsresource of the following configuration for at least 2 purposes:
SRS resource contains 4 ports.
In some implementations of embodiment 2, the network knows that the first terminal device cannot support SRS resource of 1 port for at least 2 uses, and cannot support SRS resource of 2 ports for at least 2 uses.
In some implementations of embodiment 2, the first terminal capability information is transmitted via terminal capability signaling (UE capability signaling).
In some implementations of embodiment 2, the at least 2 uses are referred to as codebook based UL transmission and antenna switching.
It should be noted that the specific forms of signaling examples 1, 2, 3, and 4 may be as described in embodiment 1, and are not repeated.
In embodiment 2, for signaling example 1, 2 is indicated in Multi-use reported by the first terminal device.
In embodiment 2, for signaling example 2, a Port4 in Multi-use reported by a first terminal device is supported.
In embodiment 2, for signaling example 3, a Port4 is reported in Multi-use reported by a first terminal device.
In embodiment 2, for signaling example 4, a Port4 in Multi-use reported by a first terminal device is supported. Or in the Multi-use reported by the first terminal device, Port4 is supported, Port1 is notSupported, and Port2 is notSupported.
In some implementations of embodiment 2, the first terminal capability is reported according to a frequency band (band) (that is, different frequency bands may independently report corresponding capabilities, per band).
In some implementations of embodiment 2, the first terminal capability is reported independently according to a band combination (per band combination).
In some implementations of embodiment 2, the first terminal capability is reported independently according to each frequency band in a band combination (i.e., the frequency bands in different band combinations can be reported independently).
In some implementation manners of embodiment 2, a first terminal device receives first configuration information sent by a network device, where the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least 2 uses.
In some implementations, the fourth SRS resource set contains at least 4-port SRS resource.
In some implementations, the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set can be configured as one of the following: aperiodic, semi-persistent, periodic.
In some implementations, the fourth SRS resource set corresponds to at least 2 usages.
In some implementations, the usage parameter indicates at least 2 values, each value indicating 1 different purpose.
In some implementations, the usage parameter indicates 1 value, the 1 indicates the at least 2 uses, e.g., the 1 value is introducing a new value, e.g., like the names codewood and dantennaswitch, antennaSwitching and codewood, codewood-antennaSwitching-codewood.
In some implementations, the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
In some implementation manners of embodiment 2, a first terminal device receives second configuration information sent by a network device, where the second configuration information at least indicates a fifth SRS resource set and a sixth SRS resource set, the fifth SRS resource set corresponds to a third use, the sixth SRS resource set corresponds to a fourth use, the third use and the fourth use are different uses, and the fifth SRS resource set and the sixth SRS resource set contain at least 1 identical SRS resource.
In some implementations, the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
In some implementations, the configuration values of the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
In some implementations, the resourceType configuration value is one of the following: aperiodic, semi-persistent, periodic.
In some implementations, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some implementations, the at least 1 same SRS resource is a 4-port SRS resource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set contain the same SRSresource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set may further include other different SRS resources.
In some implementations, the fifth SRS resource set contains all srsrsresources in the sixth SRS resource set.
In some implementations, the fifth SRS resource set is used for antenna switching, and the sixth SRS resource set is used for coded-based UL transmission.
In some implementations, the usage of the RRC IE field corresponding to the fifth SRS resource set is set to 'antennaSwitching', and the usage of the RRC IE field corresponding to the sixth SRS resource set is set to 'codebook'.
In some implementation manners of embodiment 2, the first terminal device performs corresponding SRS transmission according to the configuration (the first configuration information or the second configuration information).
Embodiment 3 (taking 4 transmitting antenna terminals as an example, the method can be generalized to other terminals with the number of transmitting antennas), where the power class corresponding to the first terminal device supports the transmission of the maximum 26dBm power, and there are 4 transmitting antennas, and each transmitting antenna is for a Power Amplifier (PA) with the maximum transmitting power of 26dB, as shown in fig. 6.
If the network configures PUSCH transmission with 4 antenna ports, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna. This configuration mapping is also applicable to 4-port SRS in antenna switching of 4T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
If the network configures PUSCH transmission with 2 antenna ports, the total power corresponding to two physical antennas is also 26dBm, and it is not necessary to virtualize multiple physical antennas into one antenna port. Therefore, a typical mapping relationship between antenna ports and physical antennas is as follows: one antenna port directly corresponds to one physical antenna. This configuration mapping is also applicable to 2-port SRS in antenna switching of 2T2R or 2T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
If the network configures PUSCH transmission with 1 antenna port, the maximum transmit power of the PA corresponding to each physical antenna meets the requirement of 26dBm, so a typical mapping relationship between the antenna ports and the physical antennas is as follows: one antenna port directly corresponds to one physical antenna. This configuration mapping relationship is also applicable to the 1-port SRS in antenna switching of 1T1R or 1T2R or 1T 4R. Therefore, in this case, it is feasible that the coded based UL transmission and the antenna switching share one SRS resource, and the time-frequency resource overhead of the SRS resource in the network can be reduced.
In some implementations of embodiment 3, to assist the network to perform relevant configuration better, the first terminal device sends, to the network device, first terminal capability information indicating that the first terminal device supports at least 1 SRSresource configured as follows for at least 2 uses:
SRS resource contains 4 ports;
SRS resource contains 2 ports;
SRS resource contains 1 port.
In some implementations of embodiment 3, the first terminal capability information is transmitted via terminal capability signaling (UE capability signaling).
In some implementations of embodiment 3, the at least 2 uses are referred to as codebook based UL transmission and antenna switching.
It should be noted that the specific forms of signaling examples 1, 2, 3, and 4 may be as described in embodiment 1, and are not repeated.
In embodiment 3, for signaling example 1, the indication 1, 2, and 4 in the Multi-use reported by the first terminal device.
In embodiment 3, for signaling example 2, in Multi-use reported by the first terminal device, Port1, Port2, and Port4 are supported.
In embodiment 3, for signaling example 3, Port1, Port2, and Port4 are reported in the Multi-use reported by the first terminal device.
In embodiment 3, for signaling example 4, in Multi-use reported by the first terminal device, Port1, Port2, and Port4 are supported.
In some implementations of embodiment 3, the first terminal capability is reported according to a frequency band (band) (that is, different frequency bands may independently report corresponding capabilities, per band).
In some implementations of embodiment 3, the first terminal capability is reported independently according to a band combination (per band combination).
In some implementations of embodiment 3, the first terminal capability is reported independently according to each frequency band in a band combination (i.e., the frequency bands in different band combinations can be reported independently).
In some implementation manners of embodiment 3, a first terminal device receives first configuration information sent by a network device, where the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least 2 uses.
In some implementations, the fourth SRS resource set includes at least SRS resource of 1 port (single port), SRS resource of 2 ports, and SRS resource of 4 ports.
In some implementations, the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set can be configured as one of the following: aperiodic, semi-persistent, periodic.
In some implementations, the fourth SRS resource set corresponds to at least 2 usages.
In some implementations, the usage parameter indicates at least 2 values, each value indicating 1 different purpose.
In some implementations, the usage parameter indicates 1 value, the 1 indicates the at least 2 uses, e.g., the 1 value is introducing a new value, e.g., like the names codewood and dantennaswitch, antennaSwitching and codewood, codewood-antennaSwitching-codewood.
In some implementations, the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
In some implementation manners of embodiment 3, a first terminal device receives second configuration information sent by a network device, where the second configuration information at least indicates a fifth SRS resource set and a sixth SRS resource set, the fifth SRS resource set corresponds to a third use, the sixth SRS resource set corresponds to a fourth use, the third use and the fourth use are different uses, and the fifth SRS resource set and the sixth SRS resource set contain at least 1 identical SRS resource.
In some implementations, the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
In some implementations, the configuration values of the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
In some implementations, the resourceType configuration value is one of the following: aperiodic, semi-persistent, periodic.
In some implementations, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some implementations, the at least 1 same SRS resource is a 1-port SRS resource, and/or a 2-port SRS resource, and/or a 4-port SRS resource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set contain the same SRSresource.
In some implementations, the fifth SRS resource set and the sixth SRS resource set may also contain other different SRS resources.
In some implementations, the fifth SRS resource set contains all srsrsresources in the sixth SRS resource set.
In some implementations, the corresponding use of the fifth SRS resource set is antenna switching, and the corresponding use of the sixth SRS resource set is codebook-based UL transmission.
In some implementations, the usage of the RRC IE field corresponding to the fifth SRS resource set is set to 'antennaSwitching', and the usage of the RRC IE field corresponding to the sixth SRS resource set is set to 'codebook'.
And the first terminal equipment performs corresponding SRS transmission according to the configuration.
Therefore, in the embodiment of the present application, the terminal device supports at least one SRS resource for at least two purposes, thereby reducing the time-frequency resource overhead corresponding to the SRS resource.
While method embodiments of the present application are described in detail above with reference to fig. 5 and 6, apparatus embodiments of the present application are described in detail below with reference to fig. 7-11, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.
Fig. 7 shows a schematic block diagram of a terminal device 300 according to an embodiment of the application. As shown in fig. 7, the terminal device 300 includes:
a communication unit 310, configured to transmit terminal capability information, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal, SRS, resource for at least two purposes.
In some embodiments, the at least two uses include codebook-based uplink transmission and antenna switching.
In some embodiments, the usage values corresponding to the at least two usages are a codebook and an antenna switch, respectively.
In some embodiments, the at least two uses include at least two of beam management, non-codebook based uplink transmission, antenna switching.
In some embodiments, the terminal capability information is also used to indicate the at least two uses.
In some embodiments, the reporting granularity of the terminal capability information includes one of:
frequency bands, combinations of frequency bands, and combinations of frequency bands.
In some embodiments, the at least one SRS resource includes a first SRS resource, wherein the first SRS resource is an SRS resource for an arbitrary number of SRS ports.
In some embodiments, an SRS resource of the at least one SRS resource is an SRS resource for a target number of SRS ports.
In some embodiments, the target number of SRS ports includes one SRS port and/or a plurality of SRS ports.
In some embodiments, the terminal capability information includes a first information field indicating the target SRS port number.
In some embodiments, the terminal capability information indicates that SRS resources corresponding to a plurality of SRS ports including the target SRS port number are available for at least two purposes, respectively; alternatively, the first and second electrodes may be,
the terminal capability information indicates whether SRS resources corresponding to a plurality of SRS ports including the target SRS port number are available for at least two purposes, respectively.
In some embodiments, the target SRS port number is less than or equal to the SRS port number corresponding to antenna switching supported by the terminal device, or the target SRS port number is less than or equal to the SRS port number corresponding to codebook-based uplink transmission supported by the terminal device.
In some embodiments, the maximum number of SRS ports is 4, or the maximum number of SRS ports is 8.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
In some embodiments, the usage parameter corresponding to the first set of SRS resources indicates the at least two usages.
In some embodiments, the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
In some embodiments, the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used to indicate the at least two usages.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports multiple sets of SRS resources for at least two purposes, wherein each set of SRS resources in the multiple sets of SRS resources at least comprises the at least one SRS resource.
In some embodiments, the terminal device supports a plurality of first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in one of the plurality of SRS resources, and each first SRS resource set corresponds to the at least two usages.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports a second set of SRS resources and a third set of SRS resources,
the second SRS resource set at least includes the at least one SRS resource, the second SRS resource set corresponds to a first usage, the third SRS resource set at least includes the at least one SRS resource, the third SRS resource set corresponds to a second usage, the first usage and the second usage are different usages, and the second SRS resource set and the third SRS resource set include at least one same SRS resource.
In some embodiments, the second set of SRS resources and the third set of SRS resources comprise the same SRS resources; and/or the presence of a gas in the gas,
the second set of SRS resources and the third set of SRS resources further include different SRS resources.
In some embodiments, the second set of SRS resources includes all SRS resources included in the third set of SRS resources.
In some embodiments, the first purpose is antenna switching and the second purpose is codebook-based uplink transmission.
In some embodiments, the communication unit 310 is further configured to receive first configuration information at least indicating a fourth set of SRS resources corresponding to at least two purposes.
In some embodiments, the usage parameter corresponding to the fourth set of SRS resources indicates the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used to indicate the at least two usages.
In some embodiments, the fourth set of SRS resources for at least two uses includes at least codebook-based uplink transmission and antenna switching.
In some embodiments, the resource type corresponding to the fourth SRS resource set includes one of:
periodic, aperiodic, and semi-persistent.
In some embodiments, the communication unit 310 is further configured to receive second configuration information, where the second configuration information is at least used for indicating a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to a third usage and the sixth SRS resource set corresponds to a fourth usage, the third usage and the fourth usage are different usages, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
In some embodiments, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some embodiments, the resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some embodiments, the fifth set of SRS resources and the sixth set of SRS resources comprise the same SRS resources; and/or the presence of a gas in the gas,
the fifth set of SRS resources and the sixth set of SRS resources further include different SRS resources.
In some embodiments, the fifth set of SRS resources includes all SRS resources included in the sixth set of SRS resources.
In some embodiments, the third purpose is antenna switching and the fourth purpose is codebook-based uplink transmission.
In some embodiments, the usage in the RRC information domain corresponding to the fifth SRS resource set is set to antenna switching, and the usage in the RRC information domain corresponding to the sixth SRS resource set is set to codebook.
In some embodiments, the terminal capability information is transmitted by terminal capability signaling.
In some embodiments, the terminal capability information is transmitted by RRC signaling or medium access control element, MAC CE, signaling.
In some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip.
It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the terminal device in the method 200 shown in fig. 5, and are not described herein again for brevity.
Fig. 8 shows a schematic block diagram of a network device 400 according to an embodiment of the application. As shown in fig. 8, the network device 400 includes:
a communication unit 410, configured to receive terminal capability information sent by a terminal device, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal, SRS, resource for at least two purposes.
In some embodiments, the at least two uses include codebook-based uplink transmission and antenna switching.
In some embodiments, the usage values corresponding to the at least two usages are a codebook and an antenna switch, respectively.
In some embodiments, the at least two uses include at least two of beam management, non-codebook based uplink transmission, antenna switching.
In some embodiments, the terminal capability information is also used to indicate the at least two uses.
In some embodiments, the reporting granularity of the terminal capability information includes one of:
frequency bands, combinations of frequency bands, and combinations of frequency bands.
In some embodiments, the at least one SRS resource includes a first SRS resource, wherein the first SRS resource is an SRS resource for an arbitrary number of SRS ports.
In some embodiments, an SRS resource of the at least one SRS resource is an SRS resource for a target number of SRS ports.
In some embodiments, the target number of SRS ports includes one SRS port and/or a plurality of SRS ports.
In some embodiments, the terminal capability information includes a first information field indicating the target SRS port number.
In some embodiments, the terminal capability information indicates that SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number are available for at least two purposes, respectively; alternatively, the first and second electrodes may be,
the terminal capability information indicates whether SRS resources corresponding to a plurality of SRS ports including the target SRS port number are available for at least two purposes, respectively.
In some embodiments, the target SRS port number is less than or equal to the SRS port number corresponding to antenna switching supported by the terminal device, or the target SRS port number is less than or equal to the SRS port number corresponding to codebook-based uplink transmission supported by the terminal device.
In some embodiments, the maximum number of SRS ports is 4, or the maximum number of SRS ports is 8.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
In some embodiments, the usage parameter corresponding to the first set of SRS resources indicates the at least two usages.
In some embodiments, the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
In some embodiments, the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used to indicate the at least two usages.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports multiple groups of SRS resources for at least two purposes, wherein each group of SRS resources in the multiple groups of SRS resources at least comprises the at least one SRS resource.
In some embodiments, the terminal device supports a plurality of first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in one of the plurality of SRS resources, and each first SRS resource set corresponds to the at least two usages.
In some embodiments, the terminal device supports at least one SRS resource for at least two purposes, including:
the terminal device supports a second set of SRS resources and a third set of SRS resources,
the second SRS resource set at least includes the at least one SRS resource, the second SRS resource set corresponds to a first usage, the third SRS resource set at least includes the at least one SRS resource, the third SRS resource set corresponds to a second usage, the first usage and the second usage are different usages, and the second SRS resource set and the third SRS resource set include at least one same SRS resource.
In some embodiments, the second set of SRS resources and the third set of SRS resources comprise the same SRS resources; and/or the presence of a gas in the gas,
the second set of SRS resources and the third set of SRS resources also include different SRS resources.
In some embodiments, the second set of SRS resources includes all SRS resources included in the third set of SRS resources.
In some embodiments, the first purpose is antenna switching and the second purpose is codebook-based uplink transmission.
In some embodiments, the communication unit 410 is further configured to transmit first configuration information to the terminal device, where the first configuration information is at least used for indicating a fourth set of SRS resources, and the fourth set of SRS resources corresponds to at least two purposes.
In some embodiments, the usage parameter corresponding to the fourth set of SRS resources indicates the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
In some embodiments, the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used to indicate the at least two usages.
In some embodiments, the fourth set of SRS resources corresponds to at least two uses including at least codebook-based uplink transmission and antenna switching.
In some embodiments, the resource type corresponding to the fourth SRS resource set includes one of:
periodic, aperiodic, and semi-persistent.
In some embodiments, the communication unit 410 is further configured to transmit second configuration information to the terminal device, where the second configuration information is at least used for indicating a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to a third usage and the sixth SRS resource set corresponds to a fourth usage, the third usage and the fourth usage are different usages, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
In some embodiments, some or all of the power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some embodiments, the resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
In some embodiments, the fifth set of SRS resources and the sixth set of SRS resources comprise the same SRS resources; and/or the presence of a gas in the gas,
the fifth set of SRS resources and the sixth set of SRS resources further include different SRS resources.
In some embodiments, the fifth set of SRS resources includes all SRS resources included in the sixth set of SRS resources.
In some embodiments, the third purpose is antenna switching and the fourth purpose is codebook-based uplink transmission.
In some embodiments, the usage in the RRC information domain corresponding to the fifth SRS resource set is set to antenna switching, and the usage in the RRC information domain corresponding to the sixth SRS resource set is set to codebook.
In some embodiments, the terminal capability information is transmitted by terminal capability signaling.
In some embodiments, the terminal capability information is transmitted by RRC signaling or medium access control element, MAC CE, signaling.
In some embodiments, the communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system on a chip.
It should be understood that the network device 400 according to the embodiment of the present application may correspond to a network device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 400 are respectively for implementing corresponding flows of the network device in the method 200 shown in fig. 5, and are not described herein again for brevity.
Fig. 9 is a schematic structural diagram of a communication device 500 according to an embodiment of the present application. The communication device 500 shown in fig. 9 comprises a processor 510, and the processor 510 may call and run a computer program from a memory to implement the method in the embodiment of the present application.
In some embodiments, as shown in fig. 9, the communication device 500 may also include a memory 520. From the memory 520, the processor 510 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 520 may be a separate device from the processor 510, or may be integrated into the processor 510.
In some embodiments, as shown in fig. 9, the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, and in particular, may transmit information or data to other devices or receive information or data transmitted by other devices.
The transceiver 530 may include a transmitter and a receiver, among others. The transceiver 530 may further include one or more antennas.
In some embodiments, the communication device 500 may specifically be a network device in the embodiment of the present application, and the communication device 500 may implement a corresponding procedure implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
In some embodiments, the communication device 500 may specifically be a terminal device in the embodiment of the present application, and the communication device 500 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.
Fig. 10 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 600 shown in fig. 10 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
In some embodiments, as shown in fig. 10, the apparatus 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.
The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.
In some embodiments, the apparatus 600 may also include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
In some embodiments, the apparatus 600 may also include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
In some embodiments, the apparatus may be applied to the network device in the embodiments of the present application, and the apparatus may implement the corresponding flow implemented by the network device in each method in the embodiments of the present application, and for brevity, details are not described here again.
In some embodiments, the apparatus may be applied to the terminal device in the embodiments of the present application, and the apparatus may implement the corresponding process implemented by the terminal device in each method in the embodiments of the present application, and for brevity, details are not described here again.
In some embodiments, the apparatuses mentioned in the embodiments of the present application may also be chips. For example, it may be a system-on-chip, a system-on-chip or a system-on-chip, etc.
Fig. 11 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in fig. 11, the communication system 700 includes a terminal device 710 and a network device 720.
The terminal device 710 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 720 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.
It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), direct bus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing the computer program.
In some embodiments, the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program enables a computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein again for brevity.
In some embodiments, the computer-readable storage medium may be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein again for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
In some embodiments, the computer program product may be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which are not described herein again for brevity.
In some embodiments, the computer program product may be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, which are not described herein again for brevity.
The embodiment of the application also provides a computer program.
In some embodiments, the computer program may be applied to the network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the network device in the methods in the embodiments of the present application, which is not described herein again for brevity.
In some embodiments, the computer program may be applied to the terminal device in the embodiments of the present application, and when the computer program runs on a computer, the computer is enabled to execute corresponding processes implemented by the terminal device in the methods in the embodiments of the present application, and for brevity, details are not described here again.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. With regard to such understanding, the technical solutions of the present application may be essentially implemented or contributed to by the prior art, or may be implemented in a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (88)
1. A method of wireless communication, comprising:
the method comprises the steps that terminal equipment sends terminal capability information, and the terminal capability information is used for indicating that the terminal equipment supports at least one Sounding Reference Signal (SRS) resource for at least two purposes.
2. The method of claim 1, wherein the at least two uses comprise codebook-based uplink transmission and antenna switching.
3. The method of claim 2, wherein the usage values corresponding to the at least two usages are codebook and antenna switching, respectively.
4. The method of claim 1, wherein the at least two uses comprise at least two of beam management, non-codebook based uplink transmission, and antenna switching.
5. The method according to any of claims 1 to 4, wherein said terminal capability information is further used for indicating said at least two uses.
6. The method according to any one of claims 1 to 5, wherein the reporting granularity of the terminal capability information includes one of:
frequency bands, combinations of frequency bands, and combinations of frequency bands.
7. The method according to any of claims 1-6, wherein the at least one SRS resource comprises a first SRS resource, wherein the first SRS resource is an SRS resource for an arbitrary number of SRS ports.
8. The method according to any of claims 1 to 6, wherein an SRS resource of the at least one SRS resource is an SRS resource for a target number of SRS ports.
9. The method of claim 8, wherein the target number of SRS ports comprises one SRS port and/or a plurality of SRS ports.
10. The method of claim 9, wherein the terminal capability information comprises a first information field indicating the target SRS port number.
11. The method of claim 9,
the terminal capability information respectively indicates that SRS resources corresponding to a plurality of SRS ports including the target SRS port number can be used for at least two purposes; alternatively, the first and second electrodes may be,
the terminal capability information indicates whether the SRS resources corresponding to the number of the plurality of SRS ports including the number of the target SRS ports are available for at least two purposes.
12. The method according to any one of claims 8 to 11,
the number of target SRS ports is less than or equal to the number of SRS ports corresponding to antenna switching supported by the terminal device, or the number of target SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device.
13. The method according to any one of claims 7 to 12,
the maximum number of SRS ports is 4, or the maximum number of SRS ports is 8.
14. The method according to any of claims 1 to 13, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
15. The method of claim 14, wherein a usage parameter corresponding to the first set of SRS resources indicates the at least two usages.
16. The method of claim 15, wherein the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
17. The method of claim 15, wherein the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used for indicating the at least two usages.
18. The method according to any of claims 1 to 13, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports multiple groups of SRS resources for at least two purposes, wherein each group of SRS resources in the multiple groups of SRS resources at least comprises the at least one SRS resource.
19. The method of claim 18, wherein the terminal device supports a plurality of first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in one of the SRS resources, and wherein each first SRS resource set corresponds to the at least two uses.
20. The method according to any of claims 1 to 13, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports a second set of SRS resources and a third set of SRS resources,
wherein the second set of SRS resources includes at least the at least one SRS resource, and the second set of SRS resources corresponds to a first use, the third set of SRS resources includes at least the at least one SRS resource, and the third set of SRS resources corresponds to a second use, the first use and the second use are different uses, and the second set of SRS resources and the third set of SRS resources include at least one same SRS resource.
21. The method of claim 20,
the second set of SRS resources and the third set of SRS resources include the same SRS resources; and/or the presence of a gas in the gas,
the second set of SRS resources and the third set of SRS resources also include different SRS resources.
22. The method of claim 20, wherein the second set of SRS resources comprises all SRS resources included in the third set of SRS resources.
23. The method of claim 22, wherein the first purpose is antenna switching and the second purpose is codebook-based uplink transmission.
24. The method according to any one of claims 1 to 23, further comprising:
the terminal equipment receives first configuration information, wherein the first configuration information is at least used for indicating a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes.
25. The method of claim 24, wherein a usage parameter corresponding to the fourth set of SRS resources indicates the at least two usages.
26. The method of claim 25, wherein the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
27. The method of claim 25, wherein the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used for indicating the at least two usages.
28. The method according to any of claims 24-27, wherein the fourth set of SRS resources for at least two uses comprises at least codebook based uplink transmission and antenna switching.
29. The method according to any of claims 24-28, wherein the resource type for the fourth set of SRS resources comprises one of:
periodic, aperiodic, and semi-persistent.
30. The method according to any one of claims 1 to 23, further comprising:
the terminal device receives second configuration information, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to a third usage, the sixth SRS resource set corresponds to a fourth usage, the third usage and the fourth usage are different usages, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
31. The method of claim 30, wherein some or all of the power-related parameters corresponding to the fifth set of SRS resources and the sixth set of SRS resources are the same.
32. The method of claim 30 or 31, wherein the resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
33. The method of any one of claims 30 to 32,
the fifth set of SRS resources and the sixth set of SRS resources include the same SRS resources; and/or the presence of a gas in the gas,
the fifth set of SRS resources and the sixth set of SRS resources also include different SRS resources.
34. The method according to any of claims 30-32, wherein the fifth set of SRS resources comprises all SRS resources comprised by the sixth set of SRS resources.
35. The method according to any of claims 30-34, wherein said third purpose is antenna switching and said fourth purpose is codebook based uplink transmission.
36. The method of claim 35, wherein the Radio Resource Control (RRC) information domain corresponding to the fifth set of SRS resources is configured for antenna switching, and wherein the RRC information domain corresponding to the sixth set of SRS resources is configured for codebook.
37. The method according to any of claims 1 to 36, wherein the terminal capability information is transmitted by terminal capability signaling.
38. The method according to any of claims 1 to 36, wherein the terminal capability information is transmitted by RRC signaling or medium access control element, MAC CE, signaling.
39. A method of wireless communication, comprising:
the method comprises the steps that network equipment receives terminal capability information sent by terminal equipment, wherein the terminal capability information is used for indicating that the terminal equipment supports at least one Sounding Reference Signal (SRS) resource used for at least two purposes.
40. The method of claim 39, wherein the at least two uses comprise codebook-based uplink transmission and antenna switching.
41. The method of claim 40, wherein the usage values corresponding to the at least two usages are codebook and antenna switching, respectively.
42. The method of claim 39, wherein the at least two uses comprise at least two of beam management, non-codebook based uplink transmission, and antenna switching.
43. The method according to any of claims 39 to 42, wherein said terminal capability information is further used for indicating said at least two uses.
44. The method according to any of claims 39 to 43, wherein the reporting granularity of the terminal capability information comprises one of:
frequency bands, combinations of frequency bands, and combinations of frequency bands.
45. The method of any one of claims 39-44, wherein the at least one SRS resource comprises a first SRS resource, and wherein the first SRS resource is an SRS resource for any number of SRS ports.
46. The method according to any of claims 39-44, wherein SRS resources in the at least one SRS resource are SRS resources for a target number of SRS ports.
47. The method of claim 46, wherein the target number of SRS ports comprises one SRS port and/or a plurality of SRS ports.
48. The method of claim 47, wherein the terminal capability information comprises a first information field indicating the target SRS port number.
49. The method of claim 47,
the terminal capability information respectively indicates that SRS resources corresponding to a plurality of SRS ports including the target SRS port number can be used for at least two purposes; alternatively, the first and second electrodes may be,
the terminal capability information indicates whether SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number are available for at least two purposes, respectively.
50. The method of any one of claims 46 to 49,
the number of target SRS ports is less than or equal to the number of SRS ports corresponding to antenna switching supported by the terminal device, or the number of target SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device.
51. The method of any one of claims 45 to 50,
the maximum number of SRS ports is 4, or the maximum number of SRS ports is 8.
52. A method according to any of claims 39-51, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
53. The method of claim 52, wherein a usage parameter corresponding to the first set of SRS resources indicates the at least two usages.
54. The method of claim 53, wherein the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
55. The method of claim 53, wherein a usage parameter corresponding to the first SRS resource set includes a first value, and wherein the first value is used for indicating the at least two usages.
56. The method according to any of claims 39-51, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports multiple groups of SRS resources for at least two purposes, wherein each group of SRS resources in the multiple groups of SRS resources at least comprises the at least one SRS resource.
57. The method of claim 56, wherein the terminal device supports a plurality of first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in one of the plurality of SRS resources, and wherein each first SRS resource set corresponds to the at least two uses.
58. The method according to any of claims 39-51, wherein the terminal device supports at least one SRS resource for at least two purposes, comprising:
the terminal device supports a second set of SRS resources and a third set of SRS resources,
wherein the second set of SRS resources includes at least the at least one SRS resource, and the second set of SRS resources corresponds to a first use, the third set of SRS resources includes at least the at least one SRS resource, and the third set of SRS resources corresponds to a second use, the first use and the second use are different uses, and the second set of SRS resources and the third set of SRS resources include at least one same SRS resource.
59. The method of claim 58,
the second set of SRS resources and the third set of SRS resources include the same SRS resources; and/or the presence of a gas in the gas,
the second set of SRS resources and the third set of SRS resources further include different SRS resources.
60. The method of claim 58, wherein the second set of SRS resources comprises all SRS resources included in the third set of SRS resources.
61. The method of claim 60, wherein the first purpose is antenna switching and the second purpose is codebook-based uplink transmission.
62. The method of any one of claims 39 to 61, further comprising:
the network equipment sends first configuration information to the terminal equipment, wherein the first configuration information is at least used for indicating a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes.
63. The method of claim 62, wherein a usage parameter corresponding to the fourth set of SRS resources indicates the at least two usages.
64. The method of claim 63, wherein the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used for indicating the at least two usages.
65. The method of claim 63, wherein a usage parameter corresponding to the fourth SRS resource set includes a second value, and wherein the second value is used for indicating the at least two usages.
66. The method according to any of claims 62-65, wherein the fourth set of SRS resources correspond to at least two uses including at least codebook based uplink transmission and antenna switching.
67. The method according to any of claims 62-66, wherein the resource type corresponding to the fourth set of SRS resources comprises one of:
periodic, non-periodic, semi-continuous.
68. The method of any one of claims 39 to 61, further comprising:
the network device sends second configuration information to the terminal device, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to a third usage, the sixth SRS resource set corresponds to a fourth usage, the third usage and the fourth usage are different usages, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
69. The method of claim 68, wherein some or all of the power-related parameters corresponding to the fifth set of SRS resources and the sixth set of SRS resources are the same.
70. The method of claim 68 or 69, wherein the resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
71. The method of any one of claims 68 to 70,
the fifth set of SRS resources and the sixth set of SRS resources include the same SRS resources; and/or the presence of a gas in the gas,
the fifth set of SRS resources and the sixth set of SRS resources also include different SRS resources.
72. The method according to any of claims 68-70, wherein the fifth set of SRS resources comprises all SRS resources comprised by the sixth set of SRS resources.
73. The method of any of claims 68-72, wherein the third purpose is antenna switching, and wherein the fourth purpose is codebook-based uplink transmission.
74. The method of claim 73, wherein a Radio Resource Control (RRC) information field corresponding to the fifth set of SRS resources is configured for antenna switching and a RRC information field corresponding to the sixth set of SRS resources is configured for codebook.
75. A method according to any one of claims 39 to 74, wherein said terminal capability information is transmitted by terminal capability signalling.
76. The method according to any of claims 39 to 74, wherein the terminal capability information is transmitted by RRC signaling or media Access control element, MAC CE, signaling.
77. A terminal device, comprising:
a communication unit, configured to send terminal capability information, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal, SRS, resource for at least two purposes.
78. A network device, comprising:
a communication unit, configured to receive terminal capability information sent by a terminal device, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal SRS resource for at least two purposes.
79. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 38.
80. A network device, comprising: a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 39 to 76.
81. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 38.
82. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 39 to 76.
83. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 38.
84. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 39 to 76.
85. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 38.
86. A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 39 to 76.
87. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 38.
88. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 39 to 76.
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| CN202110269847.XA CN115085879A (en) | 2021-03-12 | 2021-03-12 | Wireless communication method, terminal equipment and network equipment |
| PCT/CN2021/091393 WO2022188253A1 (en) | 2021-03-12 | 2021-04-30 | Wireless communication method, terminal device and network device |
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| WO2024060142A1 (en) * | 2022-09-22 | 2024-03-28 | 北京小米移动软件有限公司 | Codebook determination method for multi-antenna panel with eight antenna ports for uplink mimo transmission, and apparatus therefor |
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| CN111769919A (en) * | 2019-04-01 | 2020-10-13 | 华为技术有限公司 | Sounding Reference Signal (SRS) transmission method and communication device |
| KR20210090420A (en) * | 2020-01-10 | 2021-07-20 | 삼성전자주식회사 | Method and apparatus for reference signal transmission and reception in wireless communication systems |
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