Wireless communication method

Abstract

A wireless communication method, which is executed on a user terminal for communication, comprises: receiving configuration information used for reporting of scheduling information; receiving activation information from a first transmission-reception point, wherein the activation information is used for activating the reporting of the scheduling information; receiving the scheduling information from the first transmission-reception point; and reporting the received scheduling information to at least one second transmission-reception point.

Description

Wireless communication method Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a wireless communication method. Background Art

[0002] 3GPP's coherent joint transmission (CJT) is a coordinated multi-point transmission (CoMP) technology that can improve signal power and spatial diversity in the downlink, helping to combat fading and increase the signal-to-noise ratio. CJT improves the performance and reliability of data transmission. CJT uses multiple transmission-reception points (TRPs) to send the same information, allowing the signals at the receiver to be coherently superimposed. For CJT, the backhaul between multiple collaborative TRPs can be ideal or non-ideal. The 3rd Generation Partnership Project (3GPP) will study and develop CJT-related standards in Release 18 (Rel-18).

[0003] In the CJT architecture, the receiver uses advanced signal processing techniques such as Maximum Ratio Combining (MRC) or equalization to combine the received signals from different antennas to accurately extract the transmitted data.

[0004] CJT technology offers several advantages over traditional single-antenna transmission technologies. CJT improves the reliability and robustness of wireless communication systems by reducing the effects of fading and interference. Furthermore, this technology increases overall system capacity by enabling higher data rates and better spectral efficiency.

[0005] In 3GPP's Rel-18, the main discussion is on the coherent joint transmission of multiple TRPs in an ideal backhaul scenario. Assuming that there is an ideal backhaul between multiple TRPs, multiple TRPs occupy the same time-frequency resources to transmit the same data. In the ideal backhaul scenario, the scheduling information between multiple TRPs can be aligned through the backhaul link, and then one of the multiple TRPs sends downlink control information (DCI) to complete the indication of scheduling time-frequency domain resources. This method is also called single DCI scheduling of multiple TRPs. Technical issues:

[0006] However, existing operator network deployments mostly use the Internet Protocol (IP)-based Radio Access Network (RAN) architecture, also known as the IP-RAN. In this IP-RAN architecture, different Transmission Relays (TRPs) are connected via non-ideal backhaul, leading to significant latency in information exchange between them and making it difficult to ensure synchronous transmission of information between them. To enable coherent joint transmission of multiple TRPs in non-ideal backhaul scenarios, a method for aligning multi-TRP scheduling information is required.

[0007] Summary of the Invention

[0008] An object of the present disclosure is to provide a wireless communication method, a user equipment, and a base station.

[0009] In a first aspect, the present invention provides a wireless communication method, executed in a user terminal, comprising:

[0010] Receive configuration information used for scheduling information reporting;

[0011] receiving activation information from the first transmission reception point, wherein the activation information is used to activate scheduling information reporting;

[0012] receiving scheduling information from the first transmission reception point; and

[0013] Reporting the received scheduling information to at least one second transmission reception point.

[0014] In a second aspect, an embodiment of the present invention provides a user equipment, comprising a processor and a memory, wherein the processor is configured to call and execute a computer program stored in the memory so that the device equipped with the processor performs the disclosed method.

[0015] In a third aspect, an embodiment of the present invention provides a wireless communication method executed in a terminal device, characterized in that:

[0016] Receive configuration information used for scheduling information reporting;

[0017] Receiving scheduling information from the first transmission and reception point, wherein the symbol or time slot corresponding to the time of receiving the scheduling information and the symbol or time slot corresponding to the time of starting reporting of periodic channel state information (CSI) are offset by at least a first time offset (e.g., offset X in embodiment 3); and

[0018] Report the scheduling information to at least one second transmission receiving point.

[0019] In a fourth aspect, an embodiment of the present invention provides a user equipment, comprising a processor and a memory, wherein the processor is configured to call and execute a computer program stored in the memory so that the device equipped with the processor performs the disclosed method.

[0020] The disclosed method can be programmed as computer-executable instructions stored in a non-transitory computer-readable medium. The non-transitory computer-readable medium, when loaded into a computer, instructs the processor of the computer to execute the disclosed method.

[0021] The non-transitory computer-readable medium may include at least one of the group consisting of a hard disk, a CD-ROM, an optical storage device, a magnetic storage device, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), and a flash memory.

[0022] The disclosed method can be programmed as a computer program product, which causes a computer to perform the disclosed method.

[0023] The disclosed method may be programmed as a computer program, which causes a computer to perform the disclosed method.

[0024] Technical effects:

[0025] The present invention discloses an embodiment of the wireless communication method that requires activation information. After receiving the scheduling information from the first transmission and reception point, the user terminal reports the scheduling information to at least one second transmission and reception point.

[0026] The present invention discloses an embodiment of a method for aligning scheduling information at multiple transmission and reception points that does not require activation information. A user terminal receives scheduling information from a first transmission and reception point, wherein the time at which the scheduling information is received and the time at which periodic channel state information (CSI) reporting begins are offset by at least a first time offset (equivalent to offset X in Example 3). The user terminal reports the scheduling information to at least one second transmission and reception point. The time can be a symbol or a time slot.

[0027] The present invention uses user terminals to assist multiple transmission and reception points in exchanging scheduling information, thereby ensuring the alignment of scheduling information across multiple TRPs and reducing the overhead of scheduling information reporting. Even if multiple TRPs are connected via non-ideal backhaul links, the present invention's scheduling information alignment method can achieve synchronous coherent joint transmission (CJT). BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplified by the figures in the corresponding drawings. These exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined and referenced with each other under the premise of no contradiction. In particular, the user plane connection can also be a data transmission bearer.

[0029] FIG1 is a schematic diagram showing a communication system.

[0030] FIG. 2 is a schematic diagram showing an embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0031] FIG. 3 is a schematic diagram illustrating another embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0032] FIG. 4 is a schematic diagram showing a first embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0033] FIG5 is a schematic diagram showing RRC information including scheduling information reporting configuration.

[0034] FIG6 is a schematic diagram showing RRC information including scheduling information reporting configuration.

[0035] FIG. 7 is a schematic diagram showing a second embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0036] FIG8 is a schematic diagram showing RRC information including scheduling information reporting configuration.

[0037] FIG. 9 is a schematic diagram showing a third embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0038] FIG10 is a schematic diagram showing RRC information including scheduling information reporting configuration.

[0039] FIG11 is a schematic diagram showing RRC information including scheduling information reporting configuration.

[0040] FIG. 12 is a schematic diagram showing a fourth embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0041] FIG. 13 is a diagram showing DCI signaling as activation information and RRC information including activation configuration information.

[0042] FIG14 is a diagram illustrating a MAC CE for activating a semi-persistent CSI-RS.

[0043] FIG. 15 is a schematic diagram showing a fifth embodiment of a method for aligning scheduling information of multiple transmission reception points.

[0044] FIG16 is a schematic diagram showing a codebook-based transmission method supporting three antenna ports according to an embodiment of the present invention.

[0045] FIG17 is a schematic diagram showing an embodiment of a codebook-based transmission method supporting three antenna ports according to an embodiment of the present invention.

[0046] FIG18 schematically shows another embodiment of a codebook-based transmission method supporting three antenna ports according to an embodiment of the present invention.

[0047] FIG19 schematically shows another embodiment of a codebook-based transmission method supporting 3 antenna ports according to an embodiment of the present invention.

[0048] FIG20 is a schematic diagram showing a user equipment according to the present invention.

[0049] FIG21 is a schematic diagram showing a network node of the present invention.

[0050] FIG. 22 is a schematic diagram showing a chip of the present invention.

[0051] FIG. 23 is a schematic diagram showing a chip of the present invention. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of this application more clear, some embodiments of this application are further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain this application and are not used to limit this application.

[0053] In the Cell-free scenario, coherent joint transmission (CJT) can reduce interference between cells and improve system performance. The 18th release (Rel-18) of the Third Generation Partnership Project (3GPP) has begun to discuss the design of multi-TRP coherent joint transmission codebooks under an ideal backhaul architecture. Coherent joint transmission of multiple transmission-reception points (TRPs) requires multiple TRPs to transmit the same data simultaneously and at the same frequency. However, in the actual operating network, the backhaul between multiple TRPs is a non-ideal backhaul, and there is a delay in the interaction of information between multiple TRPs, which will cause scheduling information to be out of sync. To this end, the present invention proposes a method for aligning multi-TRP scheduling information with the assistance of user equipment (UE).

[0054] In order to enable coherent joint transmission of multiple TRPs in non-ideal backhaul scenarios, UE assistance is required to interact with some information, including scheduling information. The scheduling information is used to ensure that in the coherent joint transmission collaborative TRP, multiple TRPs call the same time-frequency resources to transmit the same service data for the same terminal. The existing standards for scheduling information do not support the interaction of scheduling information between multiple TRPs through UE assistance. The embodiment of the present invention proposes and improves the solution of UE-assisted interaction of scheduling information among multiple TRPs.

[0055] This method aggregates and forwards the scheduling information of multiple TRPs to all TRPs through the UE, thereby synchronizing the scheduling information of all TRPs. In this way, coherent joint transmission of multiple TRPs can be achieved in non-ideal backhaul scenarios, further improving network performance.

[0056] Terminal-assisted interactive scheduling information can ensure the alignment of scheduling information between multiple TRPs.

[0057] Terminal-assisted interactive scheduling information requires the terminal to forward the scheduling information issued by the master TRP to other TRPs participating in the coherent joint transmission. The master TRP can be any of the multiple TRPs participating in the coherent joint transmission, and there is no specific restriction here. The terminal forwarding the scheduling information to other TRPs participating in the coherent joint transmission can be called scheduling information reporting. Scheduling information reporting can also be called scheduling information forwarding. In the implementation process, the embodiments of the present invention solve the following technical problems:

[0058] (1) How does the terminal determine the scheduling information that needs to be forwarded and when to forward it?

[0059] (2) Scheduling information is mainly carried by DCI. Which fields and contents in DCI need to be forwarded by the terminal, and in what form?

[0060] (3) The forwarding of scheduling information can be regarded as a kind of UCI reporting. What is the reuse mechanism when the UCI forwarded by scheduling information conflicts with the existing UCI information?

[0061] The present invention proposes a method for UE-assisted exchange of multiple TRP scheduling information. The method proposes the following solutions:

[0062] (1) The present invention proposes a triggering mechanism and a reporting mechanism for terminal-assisted interaction of scheduling information between multiple TRPs. The present invention provides a UE-assisted mechanism for aligning scheduling information between multiple TRPs. Based on the indication of one TRP, the UE forwards scheduling information to the other TRPs on the indicated resources at the specified time.

[0063] (2) Furthermore, in the embodiment proposed by the present invention, after the UE receives scheduling information carried by different downlink control information (DCI) formats (DCI format), it determines the specific scheduling information that needs to be forwarded. The UE receives scheduling information from the main TRP. The so-called main TRP refers to the TRP that sends scheduling information to the UE and requires the UE to forward the scheduling information. The main TRP can send scheduling information through different DCI formats (DCI format), and each DCI format contains multiple fields. The secondary TRP is a TRP used to receive and forward the scheduling information. The present invention provides the DCI fields that the UE needs to interact with for different DCI formats.

[0064] (3) When scheduling information is carried by uplink control information (UCI), the present invention proposes a multiplexing scheme when different UCIs conflict, including a joint coding method and reporting priority for the UCI carrying scheduling information and UCIs with different contents. The UCIs with different contents include a joint coding method and reporting priority when multiplexing UCIs carrying hybrid automatic repeat request acknowledgement (HARQ-ACK), scheduling request (SR), or channel state information (CSI).

[0065] 1 , one or more core network devices (e.g., core network device 30) that run core network network functions connect to multiple transmission-reception points (TRPs), including TRPs 20a, 20b, ... 20m. TRPs 20a and 20b may be referred to as first and second TRPs. In some examples, TRP 20a may serve as a primary TRP (P-TRP), and TRP 20b may serve as a secondary TRP (S-TRP). The multiple TRPs connect to multiple terminals, including terminals 10a, 10b, ... 10n, via wireless channels. m and n may be positive integers.

[0066] First, when the terminal (for example, one of the terminals 10a-10n) forwards the scheduling information, the main TRP or the secondary TRP can trigger the forwarding of the scheduling information through the Radio Resource Control (RRC) information, DCI or the Medium Access Control (MAC) control element (CE). The forwarding method of the scheduling information can be to indicate whether the scheduling information carried by the current DCI needs to be forwarded by using 1 bit in the DCI carrying the scheduling information. Furthermore, the forwarding of the scheduling information can be activated and deactivated through the DCI, for example, by sending activation or deactivation information to the terminal (for example, one of the terminals 10a-10n) through the main TRP or the secondary TRP. After receiving the activation information, if there is no new activation information indication, the terminal needs to forward the scheduling information issued by the above-mentioned main TRP to the secondary TRP, and after receiving the deactivation information, if there is no new activation information indication, the terminal stops forwarding the scheduling information. The secondary TRP can be one or more secondary TRPs (for example, multiple of TRPs 20a-20m). For ease of explanation, in the following embodiments, the TRP 20a is used as the primary TRP, and the TRP 20b is used as the secondary TRP, and the forwarding is performed by UE 10 (e.g., terminal 10a) as an example. It should be understood that TRP 20b represents at least one secondary TRP and can actually be multiple secondary TRPs. The primary TRP can instruct another terminal 10a-10n to forward. In this article, sending means sending signaling, information or data in the downlink direction or downlink. Reporting means sending signaling, information or data in the uplink direction or uplink.

[0067] Secondly, regarding which of all the information carried by the DCI is the scheduling information that needs to be forwarded, the embodiment of the present invention determines the DCI format used to carry the scheduling information, obtains the information corresponding to the DCI field that needs to be forwarded based on the determined DCI format, and forwards it as the scheduling information.

[0068] In the solution provided by the embodiment of the present invention, for the scheduling information sent in different DCI formats, since the fields carried by different DCIs are quite different, the content related to the scheduling information that needs to be forwarded in different DCI formats is not exactly the same. This will result in different bit overheads for the terminal to forward the scheduling information, and will also cause certain differences in the resources reserved by the base station for forwarding to the terminal.

[0069] Therefore, the present invention proposes two solutions. One solution is to reserve bits for the reporting overhead corresponding to all DCI formats for uplink or downlink scheduling information, based on the maximum number of reporting overhead bits in different DCI formats. Specifically, this is achieved by adding new report quantity types to the reporting quantities configured by Radio Resource Control (RRC) for different DCI scheduling formats. These may include "SI_DL" and "SI_UL," representing the reporting quantity for downlink scheduling information and the reporting quantity for uplink scheduling information, respectively. Furthermore, the DCI format that carries scheduling information can be further subdivided. For example, the report quantity is subdivided based on the different DCI formats that carry downlink scheduling information. The report quantities for DCI format 1_0, DCI format 1_1, and DCI format 1_2 are expressed as "SI_10," "SI_11," and "SI_12," respectively. Meanwhile, the report quantities for DCI format 0_0, DCI format 0_1, and DCI format 0_2, which carry uplink scheduling information, are expressed as "SI_00," "SI_01," and "SI_02," respectively. It's important to note that scheduling information can be forwarded in either plaintext or encrypted form. Whether scheduling information is forwarded in plaintext or encrypted form has no direct bearing on the specific form of the reported quantity.

[0070] In addition, the present invention proposes a corresponding solution for the UCI multiplexing mechanism when the UCI carrying scheduling information conflicts with the UCI carrying other information. When the scheduling information is carried on the Physical Uplink Control Channel (PUCCH), if it coincides with the PUCCH carrying HARQ-ACK, the HARQ-ACK information can be cascaded after the scheduling information for transmission.

[0071] 2 , the user terminal performs a method for aligning scheduling information of multiple transmission reception points, as described below.

[0072] A first transmission and reception point transmits configuration information used for scheduling information reporting to the user terminal (S001). The user terminal receives the configuration information used for scheduling information reporting (S002).

[0073] The first transmission reception point transmits activation information to the user terminal (S003). The user terminal receives the activation information from the first transmission reception point, and the activation information is used to activate scheduling information reporting (S004).

[0074] The first transmission reception point transmits scheduling information to the user terminal (S005). The user terminal receives the scheduling information from the first transmission reception point (S006). The user terminal reports the scheduling information to at least one second transmission reception point (S007). The second transmission reception point receives the scheduling information from the user terminal and performs scheduling based on the scheduling information, thereby implementing coherent joint transmission (CJT) between multiple transmission reception points and the user terminal. The second transmission reception point can be one or more second transmission reception points.

[0075] In some embodiments, the activation information is carried in at least one of the following control signalings: radio resource control RRC, downlink control information DCI, and medium access control element MAC CE.

[0076] In some embodiments, the time when the scheduling information is reported and the time when the activation information is received are offset by at least a first time offset. In some embodiments, the granularity of the time can be in units of symbols or time slots.

[0077] In some embodiments, the scheduling information reporting configuration indicates at least one of the following information:

[0078] The first time offset (for example, the reportSlotConfig of the SI-ReportConfig in Example 1 indicates offset X);

[0079] Uplink control channel resource configuration, indicating uplink control channel resources used for scheduling information reporting (e.g., PUCCH-SI-ResourceList in Example 1);

[0080] Uplink shared channel resource configuration, indicating uplink shared channel resources used for scheduling information reporting (e.g., reportSlotOffsetList in Example 1); or

[0081] The amount of scheduling information reported.

[0082] In some embodiments, the activation information includes the scheduling information reporting configuration.

[0083] In some embodiments, the scheduling information reporting configuration is carried in radio resource control RRC information, or downlink control information DCI, or medium access control MAC control element CE.

[0084] The transmission receiving point may be a base station, or a different active antenna unit (AAU) or remote radio unit (RRU) corresponding to the same base station. In some embodiments, reporting the received scheduling information to at least one auxiliary transmission receiving point includes: reporting at least one scheduling information received from the first transmission receiving point, the at least one scheduling information includes all or part of the scheduling information received within a predefined time period, and the predefined time period starts at the symbol or time slot corresponding to the moment when the first time offset ends, and the predefined time period ends at the symbol or time slot corresponding to the moment when deactivation information is received, and the deactivation information is used to deactivate scheduling information reporting. In some embodiments, the granularity of the moment may be in units of symbols or time slots.

[0085] In some embodiments, the symbol or time slot corresponding to the time of reporting the scheduling information and the symbol or time slot corresponding to the time of receiving the activation information are offset by at least a second time offset (eg, offset Y in Example 2).

[0086] In some embodiments, the symbol or time slot corresponding to the time of receiving the scheduling information and the symbol or time slot corresponding to the time of reporting the scheduling information are offset by at least a third time offset (eg, offset Z in embodiment 2).

[0087] In some embodiments, the scheduling information reporting configuration associated with the activation information indicates at least one of the following information:

[0088] The second time offset (e.g., offset Y in Example 2);

[0089] The third time offset (e.g., offset Z in Example 2);

[0090] Uplink control channel resource configuration, indicating the uplink control channel resources used for scheduling information reporting (e.g., PUCCH-SI-ResourceList in Example 2);

[0091] Uplink shared channel resource configuration, indicating the physical uplink shared channel resources used for scheduling information reporting (e.g., reportSlotOffsetListForSI in Example 2); and

[0092] The amount of scheduling information reported.

[0093] In some embodiments, the method further comprises:

[0094] Reporting the received scheduling information to at least one auxiliary transmission reception point includes: reporting at least one scheduling information received from the first transmission reception point, the at least one scheduling information including all or part of the scheduling information received within a predefined time period, and the predefined time period starts at the symbol or time slot corresponding to the moment when the first time offset ends, and the predefined time period ends at the symbol or time slot corresponding to the moment when deactivation information is received, and the deactivation information is used to deactivate channel state information CSI reporting.

[0095] In some embodiments, the scheduling information reporting configuration is used to indicate uplink control channel resources, and the method further comprises:

[0096] Transmitting, on the uplink control channel resources, uplink shared channel resource configuration information used for scheduling information reporting (e.g., the “reporting activation configuration information” or “PUSCH resource configuration information for scheduling information reporting” in Embodiment 4) to the first transmission reception point and the at least one second transmission reception point; and

[0097] receiving configuration information for scheduling information reporting sent from the at least one second transmission reception point (e.g., the “configuration information for scheduling information reporting sent by the S-TRP” in embodiment 4), wherein the configuration information for scheduling information reporting indicates an uplink shared channel resource allocated by the second transmission reception point;

[0098] The uplink shared channel resource configuration information is used to determine the uplink shared channel resource;

[0099] The scheduling information is carried on the allocated uplink shared channel resources.

[0100] In some embodiments, the scheduling information reporting configuration includes at least one of the following information:

[0101] a fourth time offset (e.g., offset X in Embodiment 4), used to represent an offset between a symbol or time slot corresponding to a time instant of receiving the activation information and a symbol or time slot corresponding to a time instant of transmitting the uplink shared channel resource configuration information;

[0102] a fifth time offset (e.g., offset Y in Example 4), used to represent an offset between a symbol or time slot corresponding to a time instant of receiving the activation information and a symbol or time slot corresponding to a time instant of reporting the scheduling information;

[0103] a sixth time offset (e.g., offset Z in Example 4), used to represent the offset between the symbol or time slot corresponding to the moment of receiving the configuration information used for reporting the scheduling information and the symbol or time slot corresponding to the moment of reporting the scheduling information;

[0104] The first field is used to indicate the uplink control channel resource;

[0105] The second field is used to indicate the uplink shared channel resource; and

[0106] The amount of scheduling information reported.

[0107] In some embodiments, the scheduling information is carried in a first DCI format, and the scheduling information reported by the terminal includes at least one of the following: (corresponding to embodiment 7)

[0108] Frequency domain resource assignment;

[0109] Time domain resource assignment;

[0110] VRB to PRB mapping VRB-to-PRB mapping;

[0111] Modulation and coding scheme;

[0112] New data indicatorNew data indicator;

[0113] Redundancy version.

[0114] In some embodiments, the scheduling information is carried by the second DCI format, and the scheduling information reported by the terminal includes at least one of the following: (corresponding to embodiment 7)

[0115] Bandwidth part indicator;

[0116] Frequency domain resource assignment;

[0117] Time domain resource assignment;

[0118] VRB to PRB mapping VRB-to-PRB mapping;

[0119] PRB bundling size indicatorPRB bundling size indicator;

[0120] Rate matching indicator

[0121] Modulation and coding scheme;

[0122] New data indicatorNew data indicator;

[0123] Redundancy version.

[0124] In some embodiments, the scheduling information is carried by a third DCI format, and the scheduling information reported by the terminal includes at least one of the following: (corresponding to embodiment 7)

[0125] Bandwidth part indicator;

[0126] Frequency domain resource assignment;

[0127] Time domain resource assignment;

[0128] VRB to PRB mapping VRB-to-PRB mapping;

[0129] PRB bundling size indicatorPRB bundling size indicator;

[0130] Rate matching indicator

[0131] Modulation and coding scheme;

[0132] New data indicatorNew data indicator;

[0133] Redundancy version.

[0134] In different embodiments, existing information may be reused as activation information. For example, in an embodiment of periodic channel status information (CSI) reporting, the CSI reporting configuration may be reused as activation information.

[0135] 3 , the user terminal performs a method for aligning scheduling information of multiple transmission reception points, as described below.

[0136] The first transmission and reception point transmits configuration information used for scheduling information reporting to the user terminal (S011). The user terminal receives the configuration information used for scheduling information reporting (S012).

[0137] The first transmission reception point transmits scheduling information to the user terminal (S015). The user terminal receives the scheduling information from the first transmission reception point (S016), wherein the symbol or time slot corresponding to the time of receiving the scheduling information and the symbol or time slot corresponding to the time of starting to report the periodic channel state information (CSI) are offset by at least a first time offset (e.g., offset X in Example 3).

[0138] The user terminal reports the scheduling information to at least one second transmission reception point (S017). The second transmission reception point receives the scheduling information from the user terminal and performs coherent joint transmission (CJT) based on the scheduling information. The second transmission reception point may be one or more second transmission reception points.

[0139] In some embodiments, the symbol or time slot corresponding to the time of reporting the scheduling information and the symbol or time slot corresponding to the time of receiving the scheduling information are offset by at least a second time offset (eg, offset Z in embodiment 3).

[0140] In some embodiments, the scheduling information is carried in downlink control information DCI.

[0141] In some embodiments, the scheduling information reporting configuration indicates at least one of the following information:

[0142] Uplink control channel resource configuration, indicating the uplink control channel resources used for scheduling information reporting (e.g., PUCCH-SI-ResourceList in Example 1);

[0143] The first time offset (e.g., offset X in Example 3); and

[0144] The second time offset (eg, offset Z in embodiment 3).

[0145] Example 1:

[0146] In this embodiment, a TRP sends a MAC CE or DCI to activate scheduling information reporting. After receiving the MAC CE or DCI for activating scheduling information reporting, the terminal transmits scheduling information on the PUCCH / PUSCH. The scheduling information may be downlink scheduling information. The TRP that sends the MAC CE or DCI may be a P-TRP or an S-TRP, such as TRP 20a or TRP 20b.

[0147] The P-TRP or S-TRP may also issue a MAC CE or DCI to deactivate scheduling information reporting. Upon receiving the MAC CE or DCI for deactivating scheduling information reporting, the terminal stops forwarding scheduling information on the PUCCH. The information carried in the MAC CE or DCI for activating scheduling information reporting may include configuration information for scheduling information reporting, directly or indirectly indicating the scheduling information reporting configuration. The scheduling information reporting configuration is explained in detail in the following description.

[0148] As shown in Figure 4, the scheduling information reporting activation solution includes the following aspects:

[0149] Step A001: The TRP 20a sends a MAC CE M-01 or DCI for activating scheduling information reporting to the terminal (UE 10). The MAC CE M-01 or DCI for activating scheduling information reporting activates one or more scheduling information reports at a time. The MAC CE M-01 or DCI for activating scheduling information reporting can be called activation information.

[0150] Step A002: The TRP 20a sends scheduling information SI-01 to the terminal (UE 10).

[0151] Step A003: After receiving the scheduling information SI-01 from the TRP 20a, the terminal forwards the scheduling information SI-01 to the TRP 20b.

[0152] The terminal forwards all received scheduling information at the symbol or time slot corresponding to the moment at which the activation information M-01 is received, or at a symbol or time slot corresponding to a subsequent moment, if no new deactivation information is indicated. For example, the terminal receives the scheduling information SI-01, SI-02, and SI-03 from TRP 20a at the symbol or time slot corresponding to the moment at which the activation information M-01 is received, or at a symbol or time slot corresponding to a subsequent moment. The terminal then forwards the scheduling information SI-01, SI-02, and SI-03 to TRP 20b.

[0153] Step A006: The TRP 20a sends a MAC CE M-02 or DCI for deactivating the reporting of scheduling information to the terminal (UE10). The MAC CE M-02 or DCI for deactivating the reporting of scheduling information may be referred to as deactivation information M-02.

[0154] If the terminal does not indicate new activation information at the symbol or time slot corresponding to the moment at which the deactivation information M-02 is received, or if there is no new activation information at the symbol or time slot corresponding to the moment at which the deactivation information M-02 is received, then the terminal does not need to forward any scheduling information received from TRP 20a to TRP 20b. For example, if there is no new activation information at the symbol or time slot corresponding to the moment at which the deactivation information M-02 is received, or if there is no new activation information at the symbol or time slot corresponding to the moment at which the deactivation information M-02 is received, then any scheduling information received from TRP 20a does not need to be forwarded to TRP 20b.

[0155] The symbol or time slot corresponding to the moment when the terminal starts forwarding the scheduling information report is spaced apart by the first time offset offset X relative to the symbol or time slot corresponding to the moment when the scheduling trigger information is received. In other words, the symbol or time slot corresponding to the sending moment of the reported scheduling information (that is, the symbol or time slot corresponding to the forwarding moment of the scheduling information or the symbol or time slot corresponding to the reporting moment) and the symbol or time slot corresponding to the receiving moment of the received activation information are offset by at least the first time offset. X is a positive integer. The TRP 20a can statically configure the value of X through RRC information. In one example, the symbol or time slot corresponding to the reporting moment of the scheduling information after the trigger information is spaced apart by the first time offset offset X relative to the symbol or time slot corresponding to the moment when the scheduling information is sent.

[0156] The specific implementation process can be in the following forms:

[0157] Option 1.1: The TRP 20a sends an RRC message to the terminal (UE 10), and the RRC message includes a scheduling information reporting configuration. Referring to Figure 5, a new information element (IE) SI-ReportConfig is added to the RRC message, and the SI-ReportConfig includes at least one or more of the following fields:

[0158] The information carried by the activation information M-01 can be associated with SI-ReportConfig. In SI-ReportConfig, the reportSlotConfig field can configure the first time offset X of the symbol or time slot corresponding to the time when the scheduling information is reported relative to the symbol or time slot corresponding to the time when the activation information M-01 is located, or the first time offset X of the symbol or time slot corresponding to the time when the scheduling information is reported relative to the symbol or time slot corresponding to the time when the DCI of the scheduling information is issued. The PUCCH-SI-ResourceList field can configure the PUCCH resources corresponding to the scheduling information reporting.

[0159] The information carried in the deactivation information (the MAC CE M-02) sent by the P-TRP / S-TRP may also indicate reporting of deactivation scheduling information.

[0160] The SI-ReportOnPUSCH and SI-ReportOnPUCCH fields indicate whether scheduling information (SI) is reported on the PUSCH and PUCCH. The reportQuantity field is used to configure the reporting quantity of the scheduling information. The reportSlotOffsetList field is used to configure the symbol or time slot corresponding to the moment at which the PUSCH resource for reporting scheduling information begins, relative to the first time offset X of the symbol or time slot corresponding to the moment at which the activation information M-01 reported by the activation scheduling information is activated.

[0161] Option 1.2: Add a new IE SI-ReportConfigId to the RRC message, and the SI-ReportConfig includes at least one or more of the following fields:

[0162] Referring to Figure 6, the information carried by MAC CE or DCI can be associated with SI-ReportConfigId, where reportSlotConfig under SI-ReportOnPUSCH can configure the symbol or time slot corresponding to the moment at which the PUSCH resource for starting reporting scheduling information is located, and the first time offset offset X of the symbol or time slot corresponding to the moment of the activation information M-01 reported by the activation scheduling information. The configuration of the reporting resources can be configured through the existing IE ConfiguredGrantConfig in RRC, and the first type of configuration authorization (Configured grant Type1) or the second type of configuration authorization (Configured grant Type2) can be used. If the second type of configuration authorization (Configured grant Type2) is used, DCI is also required to indicate the specific PUSCH resource configuration. At the same time, the information carried in the MAC CE or DCI issued by P-TRP / S-TRP can also indicate the deactivation of scheduling information reporting.

[0163] Option 1.3: The activation and deactivation of scheduling information reporting can be indicated by MAC CE or DCI. The first time offset offset X can be directly indicated by a field in the MAC CE or DCI information. The configuration of scheduling information reporting resources can be configured through the existing IE ConfiguredGrantConfig in RRC, and the first type of configuration grant (Configured grant Type1) or the second type of configuration grant (Configured grant Type2) can be used. If the second type of configuration grant (Configured grant Type2) is used, DCI / MAC is also required to indicate the specific PUSCH resource configuration. The DCI used to activate scheduling information reporting and the DCI used to indicate the specific PUSCH resource configuration under the second type of configuration grant (Configured grant Type2) can be the same DCI or different DCIs.

[0164] It should be noted that in the above-mentioned several methods, the first time offset offset X can also be determined by a standard agreed method.

[0165] Example 2:

[0166] In this embodiment, MAC CE activation information reported by Channel State Information (CSI) is multiplexed to transmit downlink scheduling information on the PUCCH. The activation information is also triggering information for reporting the Channel State Information (CSI). The scheduling information may be downlink scheduling information.

[0167] With reference to FIG7 , the second embodiment will be described.

[0168] Step B001: The TRP 20a sends a MAC CE M-11 for activating CSI reporting to the terminal (UE 10). The MAC CE M-11 for activating CSI reporting activates semi-static CSI information reporting. The MAC CE M-11 for activating CSI reporting can be called activation information. The MAC CE M-11 activates one or more scheduling information reports at a time.

[0169] Step B002: The terminal (UE 10) starts reporting CSI M-12 to the TRP 20a.

[0170] The time slot at which the terminal (UE 10) starts reporting the CSI M-12 and the time slot at which the terminal receives the activation information M-11 are offset by at least a second time offset X.

[0171] Step B003: The terminal (UE 10) receives the scheduling information SI-13 from the TRP 20a.

[0172] Step B005: The terminal (UE 10) forwards the scheduling information SI-13 to TRP 20b.

[0173] The time slot in which the terminal receives the activation information M-11 and the time slot in which the terminal receives the plurality of scheduling information SI-13 are offset by at least a third time offset Y. The terminal receives the activation information M-11 in the time slot in which the third time offset Y is located or in a subsequent time slot, and all the received scheduling information is forwarded. For example, the terminal receives the scheduling information SI-13 to SI-15 from the TRP 20a in the time slot in which the third time offset Y is located or in a subsequent time slot after the activation information M-11 is received, and forwards the scheduling information SI-13 to SI-15 to the TRP 20b.

[0174] The time slot in which the terminal receives the scheduling information SI-13 is offset from the time slot in which the scheduling information SI-13 is forwarded by at least a fourth time offset Z. The fourth time offset Z represents the number of time slots offset between the scheduling information reporting and the issued scheduling information. The TRP 20a may configure the fourth time offset Z via RRC information. Z may be equal to YX. X represents the offset of the CSI reporting relative to the activation information M-11.

[0175] Step B006: The TRP 20a sends a MAC CE to deactivate CJT CSI reporting to the terminal (UE 10).

[0176] In this embodiment, the P-TRP or S-TRP sends a MAC CE to activate and deactivate CJT CSI reporting, and also sends RRC (Radio Resource Control) information. The RRC information indicates the time slot in which the CSI reporting activation information M-11 is sent, the offset Y relative to the time slot in which the starting or earliest DCI carrying the starting scheduling information to be reported is located, and the offset Z relative to the time slot in which the scheduling information reporting is sent, where offset X represents the number of time slots by which the CSI reporting is offset relative to the activation information M-11.

[0177] The MAC CE M-14 for deactivating CSI reporting can be called deactivation information M-14. If the terminal receives the deactivation information M-14 in the time slot or the subsequent time slot, if there is no new activation information indication, it is not necessary to forward the received scheduling information. For example, if there is no new activation information indication in the time slot (slot) or after the deactivation information M-14 is received, any scheduling information received from the TRP 20a does not need to be forwarded to the TRP 20b. Alternatively, the scheduling information after the YX time slot after the last CSI report after the deactivation information M-14 is issued does not need to be forwarded by the terminal.

[0178] The specific implementation process can be in the following forms:

[0179] Option 2.1: Referring to Figure 8, for example, add the reportSlotConfigForSI and PUCCH-SI-ResourceList fields in the RRC configuration signaling to indicate the configuration of scheduling information transmitted on the PUCCH. reportSlotConfigForSI configures offset Z, SlotConfigForSI is used to configure offset Y, and PUCCH-SI-ResourceList is used to configure the transmitted PUCCH resources.

[0180] Option 2.2: For example, add the reportSlotConfigForSI and PUCCH-SI-ResourceList fields in the RRC configuration signaling to indicate that the scheduling information is transmitted on the PUCCH, where reportSlotConfigForSI configures offset Z and SlotConfigForSI is used to configure offset Y. The configuration of the reported resources can be configured through the existing IE ConfiguredGrantConfig in the RRC, and either the first type of configuration grant (Configured grant Type 1) or the second type of configuration grant (Configured grant Type 2) can be used. If the second type of configuration grant (Configured grant Type 2) is used, the DCI is also required to indicate the specific PUSCH resource configuration.

[0181] It should be noted that the offset timeslots offset Y and offset Z in the above-mentioned methods can also be determined by standard agreement.

[0182] Example 3:

[0183] This embodiment describes an example of transmitting downlink scheduling information on the PUCCH / PUSCH in a scenario of periodic CSI reporting.

[0184] The TRP 20a sends RRC information to the terminal (UE 10), which includes the scheduling information reporting configuration. A new IE is added to the RRC information configuration to determine the starting or earliest time slot where the scheduling information DCI needs to be reported, and the offset Z of the scheduling information reporting relative to the time slot where the DCI carrying the scheduling information is located.

[0185] Embodiment 3 is described with reference to FIG. 9 .

[0186] Step C001: The terminal (UE 10) performs periodic CSI reporting.

[0187] Step C002: The TRP 20a sends scheduling information SI-21 to the terminal (UE 10).

[0188] Step C003: The TRP 20a sends scheduling information SI-25 to the terminal (UE 10).

[0189] Step C004: After receiving the scheduling information SI-21 from the TRP 20a, the terminal forwards the scheduling information SI-21 to the TRP 20b.

[0190] For periodic CSI reporting, the time slot and the subsequent time slots that are offset by X time slots relative to the starting CSI reporting time slot of the terminal (UE 10) shall be forwarded if there is no indication not to forward the scheduling information. The value of X depends on the minimum scheduling preparation time of the network side (TRP 20a). For example, the terminal receives the scheduling information SI-21 to SI-25 from the TRP 20a in the time slot or the subsequent time slot that is X time slots away from the reporting time slot of the CSI information CSI-01, and forwards the scheduling information SI-21 to SI-25 to TRP 20b. The forwarding time slot of the scheduling information SI-21 and the reporting time slot of the CSI information CSI-01 are offset by X time slots.

[0191] Offset Z is the time slot for reporting scheduling information, which is the offset time slot relative to the time slot of the DCI in which the scheduling information is delivered.

[0192] The specific implementation process can be in the following forms:

[0193] Option 3.1: The TRP 20a sends RRC information to the terminal (UE 10), and the RRC information includes the scheduling information reporting configuration. Referring to Figure 10, for example, the SiOffsetSlotConfig field is added under the periodic field of the CSI periodic report under the RRC configuration signaling CSI-ReportConfig. The SiOffsetSlotConfig field is used to configure the time slot where the DCI that carries the starting scheduling information to be reported (i.e., SI-21 in Figure 9) is located, relative to the time slot where the periodic CSI starts reporting (i.e., CSI-01 in Figure 9). It is assumed here that the offset is X time slots. After the terminal (UE 10) starts the CSI reporting time slot and offsets by X time slots, in the time slot and the subsequent time slots, if there is no indication of not forwarding the scheduling information, all the scheduling information sent must be forwarded, and the value of X depends on the minimum scheduling preparation time of the network side (TRP 20a).

[0194] At the same time, the SiReportSlotConfig field is added under the periodic field. This field is used to configure the offset of the time slot for reporting scheduling information (i.e., the time slot in step C004 of Figure 9) relative to the time slot where the DCI carrying the scheduling information is located (i.e., the time slot in step C002 of Figure 9). The offset value is Z. The configuration of reported resources can reuse the PUCCH-CSI-ResourceList field under periodic, or a new PUCCH-SI-ResourceList field can be added. This field will contain resource configuration information reported by PUCCH.

[0195] Option 3.2: Referring to Figure 11, for example, a new SI-ReportOnPUCCH field is added under the IE of the RRC configuration signaling PUCCH-Config. The SI-ReportOnPUCCH field includes reportSlotConfig, SiOffsetSlotConfig and PUCCH-SI-ResourceList fields. The SiOffsetSlotConfig is used to configure the offset X. The SiOffsetSlotConfig field is used to configure the offset offset of the time slot (slot) where the DCI that needs to report scheduling information is located relative to the time slot (slot) where the periodic CSI starts reporting. It is assumed here that the offset is X time slots (slots). After the terminal (UE 10) offsets X time slots after the starting CSI reporting time slot, in the time slot where it is located and the subsequent time slots, if there is no indication of not forwarding the scheduling information, all the scheduling information sent needs to be forwarded. The PUCCH-SI-ResourceList is used to configure the PUCCH resources for reporting scheduling information, and reportSlotConfig is used to configure the offset Z.

[0196] Option 3.3: For example, under the periodic field of the CSI periodic report under the RRC configuration signaling CSI-ReportConfig, add the SiOffsetSlotConfig field. The SiOffsetSlotConfig field is used to configure the offset of the time slot (slot) where the DCI carrying the start reporting scheduling information is located relative to the time slot (slot) where the periodic CSI starts reporting. It is assumed here that the offset is X time slots (slots). After the terminal (UE 10) offsets X time slots after the start CSI reporting time slot, in the time slot where it is located and the subsequent time slots, if there is no indication of not forwarding the scheduling information, all the scheduling information sent needs to be forwarded. At the same time, add the SiReportSlotConfig field under the periodic field. The SiReportSlotConfig field is used to configure the offset (offset) of the time slot (slot) corresponding to the first scheduling information report relative to the time slot (slot) where the DCI that needs to report scheduling information is located. The offset (offset) takes a value of Z. The configuration of reported resources can be configured through the existing IE ConfiguredGrantConfig in RRC, and can adopt the first type of configuration grant (Configured grant Type1) or the second type of configuration grant (Configured grant Type2). If the second type of configuration grant (Configured grant Type2) is adopted, DCI is also required to indicate the specific PUSCH resource configuration.

[0197] It should be noted that the above-mentioned offset timeslots offset Y and offset Z can also be determined by standard agreement. Furthermore, the reporting of scheduling information can be activated through MAC CE or DCI.

[0198] Example 4:

[0199] This embodiment illustrates that scheduling information is transmitted on the PUSCH and is triggered by the DCI.

[0200] The TRP 20a sends RRC information to the terminal (UE 10). The RRC information includes a scheduling information reporting configuration. The TRP 20a (as a P-TRP) sends DCI information to activate scheduling information reporting. The DCI information used to activate scheduling information reporting can be called activation information. The activation information can be associated with the scheduling information reporting configuration in the RRC information. The RRC information configures at least one of the following information:

[0201] (1) The offset X between the time slot where the activation configuration information (uplink shared channel resource configuration information) is reported and the time slot where the activation information (DCI) is reported; and

[0202] (2) The time slot where the initial scheduling information is reported is offset Y relative to the time slot where the activation scheduling information is reported. The method for aligning scheduling information of multiple transmission reception points in embodiment 4 is described with reference to FIG12.

[0203] Step D001: The TRP 20a sends a DCI M-32 for activating scheduling information reporting to the terminal (UE 10). The DCI M-32 for activating scheduling information reporting activates one or more scheduling information reports at a time. The DCI M-32 for activating scheduling information reporting can be called activation information.

[0204] Step D002: The terminal transmits the reporting activation configuration information (uplink shared channel resource configuration information) M-33 for scheduling information reporting to the TRP 20a and the TRP 20b on the uplink control channel resources (e.g., PUCCH resources).

[0205] Step D003: The TRP 20b sends the configuration information M-34 for scheduling information reporting to the terminal. The terminal receives the configuration information M-34 for scheduling information reporting sent from at least one of the TRPs 20a and 20b. The configuration information M-34 for scheduling information reporting indicates the uplink shared channel resources (e.g., PUSCH resources) allocated to at least one of the TRPs 20a and 20b. The allocated uplink shared channel resources are generated based on the reporting activation configuration information (uplink shared channel resource configuration information) M-33.

[0206] The scheduling information reporting is to report the received scheduling information to at least one second transmission reception point on the allocated uplink shared channel resources.

[0207] Step D004: The TRP 20a sends scheduling information SI-31 to the terminal (UE 10).

[0208] Step D005: After receiving the scheduling information SI-31 from the TRP 20a, the terminal forwards the scheduling information SI-31 to the TRP 20b.

[0209] The information carried by the DCI M-32 may be directly or indirectly related to offset X and offset Y. The values ​​of offset X and offset Y are configured by the RRC information. In addition, the information carried by the DCI may be directly or indirectly related to the scheduling information reporting configuration included in the RRC information.

[0210] X is the time slot where the activation configuration information (uplink shared channel resource configuration information) is reported, and is the offset relative to the time slot where the activation information (DCI) is located. The actual reported activation configuration information includes the uplink shared channel resource configuration used for scheduling information reporting. In other words, the offset between the time slot in which the terminal receives the activation information and the time slot in which the reported activation configuration information is transmitted is called the fifth offset X. The terminal only needs to report the reported activation configuration information (uplink shared channel resource configuration information) once. The terminal can report the reported activation configuration information (uplink shared channel resource configuration information) via PUCCH. The specific PUCCH reporting resources can be semi-statically configured through RRC signaling.

[0211] Y is the offset between the timeslot in which the start scheduling information is reported and the timeslot in which the activation scheduling information is reported. In other words, the offset between the timeslot in which the terminal receives the activation information and the timeslot in which the received scheduling information is reported is called the sixth offset Y. The terminal reports the scheduling information via the PUSCH.

[0212] Z is the offset between the time slot in which the TRP 20b (S-TRP) sends the configuration information for scheduling information reporting and the time slot in which the scheduling information is reported. In other words, the offset between the time slot in which the terminal receives the configuration information for scheduling information reporting and the time slot in which the received scheduling information is reported is called the seventh offset, Z. The TRP 20b (S-TRP) must send the configuration information for scheduling information reporting before YZ. The value of Z can be either explicitly or implicitly configured.

[0213] Scheduling information reporting time can be in the following two ways:

[0214] (1) In the time slot in which the activation information is sent and the time slots thereafter, if there is no instruction not to forward the scheduling information, the downlink scheduling information sent by the P-TRP must be forwarded;

[0215] (2) After the time slot with an offset of X time slots from the time slot in which the SI is activated, all downlink scheduling information sent in the time slot and the time slots thereafter shall be forwarded unless there is an instruction not to forward the scheduling information.

[0216] The specific implementation process can be in the following forms:

[0217] Option 4.1: Activate configuration information (e.g., M-33) and report it on the PUCCH. Reporting resources are semi-statically configured via RRC.

[0218] For example, SI-Request1 and SI-Request2 fields are added to the DCI signaling. The SI-Request1 field is used to indicate the resource configuration for PUCCH reporting. The PUCCH resource is used to report the reporting activation configuration information (uplink shared channel resource configuration information) M-33. It is ultimately associated with SI-ReportOnPUCCH. SI-Request2 is used to associate with the SI-ReportOnPUSCH field in the RRC. The SI-ReportOnPUSCH field is configured with the offset Y.

[0219] A new SI-ReportOnPUCCH field is added under the RRC configuration signaling IE PUCCH-Config. The SI-ReportOnPUCCH field includes the reportSlotConfig and PUCCH-SI-ResourceList fields. The reportSlotConfig is used to configure the time slot where the PUCCH resource for reporting the activation configuration information (uplink shared channel resource configuration information) M-33 is located, with an offset X relative to the time slot where the activation information (DCI) is located. The PUCCH-SI-ResourceList field is used to configure the PUCCH resource for reporting the activation configuration information (uplink shared channel resource configuration information) M-33.

[0220] In the RRC configuration signaling, a new SI-ReportOnPUSCH field is added under the IE PUSCH-Config, which includes a reportSlotOffsetList used to configure the offset Z.

[0221] It should be understood that reporting resources can be semi-statically configured through Configured Grant (CG).

[0222] Example 5:

[0223] Furthermore, according to the Rel-18 standard, for CJT scenarios, the CSI reference signal (CSI-RS) resources of multiple TRPs are distributed in adjacent time slots. However, for non-ideal backhaul scenarios, the real-time information exchange between different TRPs is poor. To ensure that the CSI-RS resources of different TRPs are sent in adjacent time slots, the UE needs to assist in exchanging some information. In addition, the CSI reporting of different TRPs is sometimes activated through MAC CE, while others are activated through DCI. To ensure that the CSI reported by different TRPs is not interfered with, it is necessary to ensure that different TRPs report CSI simultaneously, which also requires the UE to assist in exchanging some information.

[0224] For periodic CSI-RS delivery and CSI reporting, CSI-RS resources and CSI reporting can be statically configured via RRC. Different TRPs can exchange RRC information via the Xn interface. In this way, static configuration of CSI-RS resource delivery and CSI reporting via RRC can meet reporting constraints. Semi-persistent and aperiodic CSI-RS delivery is mainly activated through MAC CE or DCI. Therefore, some information needs to be exchanged with the UE. The following provides corresponding solutions to the above problems:

[0225] Referring to Figure 14, for semi-persistent CSI-RS, the CSI-RS is activated through MAC CE. The information carried by MAC CE is as follows:

[0226] To ensure that the CSI-RSs sent by different TRPs are adjacent in the time domain or in the same time slot, the CSI-RS resource configuration information for CSI-RS activation needs to be exchanged between different TRPs. The following methods can be used:

[0227] Different TRPs exchange semi-persistent (SP) CSI-RS activation information in advance through the Xn interface. The SP CSI-RS activation information includes one or more of the following information:

[0228] Time domain information when activation information is sent,

[0229] SP CSI-RS resource set identifier (SP CSI-RS resource set ID),

[0230] Serving Cell ID,

[0231] Bandwidth Part Identifier (BWP ID),

[0232] Transmission Configuration Indicator (TCI) state identifiers TCI State ID0 to TCI State IDN,

[0233] Semi-persistent CSI interference measurement resource set identifier (SP CSI-IM resource set ID).

[0234] The terminal (UE 10) assists in exchanging SP CSI-RS activation information. The terminal (UE 10) forwards the CSI-RS configuration information of TRP 20a (P-TRP) to TRP 20b (S-TRP). For example, after TRP 20a (P-TRP) activates semi-persistent CSI-RS via MAC CE, the terminal (UE 10) forwards the CSI-RS resource configuration information corresponding to the CSI-RS resource to TRP 20b (S-TRP). The specific forwarded information is as follows: The terminal (UE 10) forwards one or more of the following information:

[0235] SP CSI-RS resource set identifier (SP CSI-RS resource set ID),

[0236] Serving Cell ID,

[0237] Bandwidth Part Identifier (BWP ID),

[0238] Transmission Configuration Indicator (TCI) state identifiers TCI State ID0 to TCI State IDN,

[0239] Semi-persistent CSI interference measurement resource set identifier (SP CSI-IM resource set ID).

[0240] The relevant information carried by the MAC CE can be reported through the PUCCH or PUSCH, and the CSI-RS resource configuration information can be activated and reported through the MAC CE or DCI.

[0241] Embodiment 5 is described with reference to FIG. 15 .

[0242] Activation Option 1: MAC CE activation for PUCCH reporting scenario:

[0243] Step E001a: The TRP 20a sends a MAC CE M-41a for activating the SP CSI-RS to the terminal (UE10). The MAC CE M-41a for activating the SP CSI-RS may be referred to as activation information.

[0244] Step E002a: The TRP 20a sends a MAC CE M-42a for activating CSI-RS resource configuration information reporting to the terminal (UE 10).

[0245] Step E003a: After receiving the MAC CE M-42a, the terminal (UE 10) reports CSI-RS resource configuration information M-43a to the TRP 20b on the PUCCH to respond to the MAC CE M-42a.

[0246] Step E004a: After receiving the CSI-RS resource configuration information M-43a, the TRP 20b sends CSI-RS activation information M-44a in response to the CSI-RS resource configuration information M-43a.

[0247] Activation Option 2: DCI activation for PUSCH scenario:

[0248] Step E001b: The TRP 20a sends a MAC CE M-41a for activating the SP CSI-RS to the terminal (UE10). The MAC CE M-41b for activating the SP CSI-RS may be referred to as activation information.

[0249] Step E002b: The TRP 20a sends DCI M-42b for activating CSI-RS resource configuration information reporting to the terminal (UE 10).

[0250] Step E003b: After receiving the MAC CE M-42b, the terminal (UE 10) reports CSI-RS resource configuration information M-43b to the TRP 20b on the PUSCH to respond to the MAC CE M-42b.

[0251] Step E004b: After receiving the CSI-RS resource configuration information M-43b, the TRP 20b sends CSI-RS activation information M-44b in response to the CSI-RS resource configuration information M-43b.

[0252] The report quantity configuration at this time may indicate whether to include the configuration information of the CSI-RS resources and the resource configuration information of the PUSCH for CSI reporting.

[0253] Example 6:

[0254] In the aforementioned embodiment, in order to achieve the alignment of multiple TRP scheduling information in a non-ideal backhaul scenario, and to meet the Rel-18 ideal backhaul scenario for multiple TRPs to send CSI-RS resources in the same or adjacent time slots, the terminal needs to assist in the interaction of uplink and downlink scheduling information and semi-persistent CSI-RS activation configuration information. However, the forwarding of these information by the terminal needs to occupy a certain amount of uplink resources, and the size of the occupied resources depends on the size of the scheduling information that the terminal needs to forward. For different DCI formats (DCI format), the scheduling information carried may be very different, which leads to certain differences in the size of the uplink resources occupied by the terminals forwarding the scheduling information for different DCI formats (DCI format). In order to better allocate reasonable uplink resources for the terminal to forward scheduling information, the solution of the present invention indicates the reporting amount of the terminal through the report quantity parameter configured by RRC.

[0255] In some embodiments, the reported amount of scheduling information is used to indicate at least one of the following:

[0256] The same reporting amount is used for reporting downlink and uplink scheduling information;

[0257] The reporting of scheduling information corresponding to different DCI formats uses the same reporting amount;

[0258] The reporting of scheduling information corresponding to different DCI formats uses different reporting amounts; and

[0259] Different reporting amounts are used for reporting downlink and uplink scheduling information.

[0260] According to the aforementioned embodiment, the terminal needs to forward the scheduling information issued by the main TRP, and the configuration of the downlink scheduling information of the main TRP can be carried by DCI format 1_0, DCI format 1_1, and DCI format 1_2, while the uplink scheduling information is mainly carried by DCI format 0_0, DCI format 0_1, and DCI format 0_2. Therefore, for the forwarding of scheduling information carried by different DCI formats, in order to indicate the reporting amount of the terminal, the present invention provides the following solutions:

[0261] (1) There is no distinction between the reporting quantity and the DCI format for reporting downlink and uplink scheduling information. The "SI" field is used uniformly in the RRC parameter configuration to indicate the report quantity. When allocating resources for reporting scheduling information, the primary and secondary TRPs allocate reporting resources based on the maximum bit overhead required for the downlink and uplink scheduling information that may be reported.

[0262] (2) For the scheduling information that needs to be reported in DCI format 1_0, DCI format 1_1, and DCI format 1_2 that carry downlink scheduling information, the base station allocates resources for reporting the scheduling information based on the maximum bit overhead occupied by the scheduling information. For the scheduling information that needs to be reported in DCI format 0_0, DCI format 0_1, and DCI format 0_2 that carry uplink scheduling information, the base station allocates resources for reporting the scheduling information based on the DCI format with the maximum bit overhead occupied. Specifically, for reporting downlink and uplink scheduling information, a distinction is made between uplink scheduling information reporting and downlink scheduling information reporting. When downlink scheduling information needs to be reported, the "SI_DL" field is uniformly used in the configuration of report quantity in the RRC parameter configuration to indicate the value of report quantity. When uplink scheduling information needs to be reported, the "SI_UL" field is uniformly used in the configuration of report quantity in the RRC parameter configuration to indicate the value of report quantity. When allocating resources for reporting scheduling information, the primary TRP and the secondary TRP allocate resources for reporting scheduling information according to the DCI format with the largest bit overhead occupied among the multiple DCI formats for the scheduling information that needs to be reported in DCI format 1_0, DCI format 1_1, and DCI format 1_2 carrying downlink scheduling information. And for the scheduling information that needs to be reported in DCI format 0_0, DCI format 0_1, and DCI format 0_2 carrying uplink scheduling information, resources are allocated for reporting scheduling information according to the DCI format with the largest bit overhead occupied among the multiple DCI formats.

[0263] (3) For the scheduling information that needs to be reported in DCI format 1_0, DCI format 1_1, and DCI format 1_2 carrying downlink scheduling information, the first value, second value, and third value of the reporting quantity of the scheduling information are respectively allocated. For the scheduling information that needs to be reported in DCI format 0_0, DCI format 0_1, and DCI format 0_2 carrying uplink scheduling information, the fourth value, fifth value, and sixth value of the reporting quantity of the scheduling information are respectively allocated. Specifically, for the reporting of downlink and uplink scheduling information, the uplink scheduling information reporting and the downlink scheduling information reporting are distinguished, and different DCI format information is distinguished. When downlink scheduling information needs to be reported, the configuration of the report quantity in the RRC is determined according to the DCI format carrying the downlink scheduling information. For example, the values ​​of the report quantity configuration in the RRC corresponding to DCI format 1_0, DCI format 1_1, and DCI format 1_2 carrying downlink scheduling information are "SI_DL_10", "SI_DL_11", and "SI_DL_12", respectively. The report quantity values ​​configured in the RRC for DCI format 0_0, DCI format 0_1, and DCI format 0_2 carrying uplink scheduling information are "SI_UL_00," "SI_UL_01," and "SI_UL_02," respectively. This allows the primary and secondary TRPs to determine the resources to allocate for reporting scheduling information based on the type of scheduling information to be forwarded.

[0264] (4) Similar to solution (2), for the scheduling information that needs to be reported in DCI format 1_0, DCI format 1_1, and DCI format 1_2 that carry downlink scheduling information, the same seventh value of the reporting quantity of the scheduling information is allocated respectively, and for the scheduling information that needs to be reported in DCI format 0_0, DCI format 0_1, and DCI format 0_2 that carry uplink scheduling information, the same eighth value of the reporting quantity of the scheduling information is allocated respectively. Specifically, for the reporting of downlink and uplink scheduling information, uplink scheduling information reporting and downlink scheduling information reporting are distinguished. When downlink scheduling information needs to be reported, the configuration of report quantity in the RRC parameter configuration is uniformly represented by the "SI_DL" field. When uplink scheduling information needs to be reported, the configuration of report quantity in the RRC parameter configuration is uniformly represented by the "SI_UL" field. When the main TRP and auxiliary TRP allocate resources for reporting scheduling information, the main TRP uses a fixed format DCI format for scheduling. For example, the downlink can be DCI format 1_0, DCI format 1_1 or DCI format 1_2. Therefore, the reported scheduling information only needs to allocate resources for reporting scheduling information according to the DCI format.

[0265] (5) The DCI format that carries uplink or downlink scheduling information includes scheduling information that needs to be reported in ciphertext. For the reporting of downlink and uplink scheduling information, a distinction is made between uplink scheduling information reporting and downlink scheduling information reporting. When downlink scheduling information needs to be reported, the configuration of report quantity in the RRC parameter configuration is uniformly represented by the "SI_DL" field. When uplink scheduling information needs to be reported, the configuration of report quantity in the RRC parameter configuration is uniformly represented by the "SI_UL" field. At the same time, a new DCI format for uplink or downlink scheduling is added. The information carried by the new DCI format includes scheduling information that needs to be forwarded in ciphertext. Before forwarding the scheduling information, the primary TRP and the secondary TRP exchange key information through the X2 / Xn interface.

[0266] Example 7:

[0267] As can be seen from the above embodiments, the information that needs to be exchanged between multiple TRPs may also be different depending on the DCI format carrying the scheduling information. This embodiment determines which information in the DCI format needs to be forwarded based on the DCI format carried by the scheduling information to be forwarded.

[0268] For forwarding of downlink scheduling information, if the scheduling information is delivered via DCI format 1_0, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0269] Table 1

[0270] For forwarding of downlink scheduling information, if the scheduling information is delivered via DCI format 1_1, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0271] Table 2

[0272] For forwarding of downlink scheduling information, if the scheduling information is delivered via DCI format 1_2, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0273] Table 3

[0274] For forwarding of uplink scheduling information, if the scheduling information is delivered via DCI format 0_0, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0275] Table 4

[0276] For forwarding of uplink scheduling information, if the scheduling information is delivered via DCI format 0_1, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0277] Form 5

[0278] For forwarding of uplink scheduling information, if the scheduling information is delivered via DCI format 0_2, the scheduling information that the terminal needs to forward includes one or more items from the following table:

[0279] Form 6

[0280] For DCI formats that carry different scheduling information, based on Example 6, the scheduling information forwarding content corresponding to different DCI formats is not exactly the same, so the secondary TRP needs to determine which DCI format the primary TRP uses to send scheduling information. The secondary TRP can distinguish the DCI format used by the primary TRP to send scheduling information in the following ways:

[0281] According to the field information contained in the decoded scheduling information, for example,

[0282] Depending on the bit length corresponding to the forwarded scheduling information, for example, different DCI formats carrying scheduling information have different corresponding bit lengths to be forwarded.

[0283] Furthermore, TRP 20a can instruct the terminal via a bitmap which fields to report in different DCI formats.

[0284] Example 8:

[0285] In the limited uplink time domain resources of a single time slot, the time domain resources of various uplink control information (UCI) may overlap. When PUCCH transmission resources for different types of UCI overlap, combined UCI transmission is required to avoid parallel transmission of multiple PUCCHs on the same carrier. This embodiment primarily discusses the transmission strategy for when scheduling information reporting overlaps with other UCI time domain resources.

[0286] In 5G NR networks, the PUCCH (Physical Uplink Control Channel) is a physical channel used to send uplink control information (UCI). There are five PUCCH formats: 0, 1, 2, 3, and 4.

[0287] PUCCH format 0: PUCCH format 0 is the simplest format in PUCCH, occupying only one symbol and no more than 2 bits. It can be used to transmit HARQ ACK / NACK, SR, or HARQ ACK / NACK+SR information.

[0288] PUCCH format 1: PUCCH format 1 is an extended format of PUCCH and can be used to transmit HARQ feedback, SR and CSI reports. PUCCH format 1 occupies 4-14 symbols and is no more than 2 bits.

[0289] PUCCH format 2: PUCCH format 2 is an extended format of PUCCH and can be used to transmit HARQ ACK / NACK, SR, or HARQ ACK / NACK+SR information, as well as UE CSI information. PUCCH format 2 occupies 1-2 symbols and can be greater than 2 bits.

[0290] PUCCH format 3: PUCCH format 3 is another extended format of PUCCH and can be used to transmit HARQ ACK / NACK, SR or HARQ ACK / NACK+SR information, as well as UE CSI information. PUCCH format 3 occupies 4-14 symbols and can be larger than 2 bits.

[0291] PUCCH format 4: PUCCH format 4 is the highest-level PUCCH format and can be used to transmit HARQ ACK / NACK, SR, or HARQ ACK / NACK+SR information, as well as UE CSI information. PUCCH format 4 occupies 4-14 symbols, can be larger than 2 bits, and can support multiple UEs.

[0292] The selection of the PUCCH format by the terminal (UE 10) depends on the amount of UCI information that the UE needs to transmit and the utilization rate of network resources.

[0293] In some embodiments, when the scheduling information SI is carried on an uplink control channel (corresponding to PUCCH) for reporting, and the uplink control information UCI overlaps with the scheduling information SI in the time domain, uplink control information UCI multiplexing is performed.

[0294] In some embodiments, when the scheduling information SI is carried on the uplink control channel (corresponding to PUCCH) format 2 / 3 / 4 for reporting, when at least one of the following uplink control information UCI overlaps with the scheduling information SI in the time domain, the uplink control information UCI is multiplexed and carried together on the resources of the uplink control channel for transmission: scheduling request SR, HARQ-ACK, and channel state information CSI.

[0295] In some embodiments, when the scheduling information SI is carried on the uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 1), when multiplexed with the scheduling request SR, the bits of the scheduling request SR are concatenated after the bit sequence of the scheduling information SI and jointly coded;

[0296] When the scheduling information SI is carried on the uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 2), when multiplexed with HARQ-ACK, an uplink control channel (corresponding to PUCCH) resource is further determined in the resource set of the uplink control channel (corresponding to PUCCH) for simultaneously transmitting the HARQ-ACK, the bit scheduling request SR and the scheduling information SI;

[0297] When the scheduling information SI is carried on an uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 3), and is multiplexed with the channel state information CSI, an uplink control channel (corresponding to PUCCH) resource is further determined in the resource set of the uplink control channel (corresponding to PUCCH) for simultaneously transmitting the channel state information CSI and the scheduling information SI;

[0298] When the scheduling information SI is carried on the uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 4), when it is multiplexed with the HARQ ACK and the scheduling request SR, the scheduling information, HARQ ACK and the scheduling request SR are jointly encoded;

[0299] When the scheduling information SI is carried on an uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 5 (scenario 1)), and is multiplexed with HARQ ACK and channel state information CSI, an uplink control channel (corresponding to PUCCH) resource is further determined in the resource set of the uplink control channel (corresponding to PUCCH) for simultaneously transmitting the HARQ ACK and channel state information CSI and the scheduling information SI;

[0300] When the scheduling information (SI) is carried on the uplink control channel (corresponding to the PUCCH) for reporting (corresponding to UCI overlap situation 5 (scenario 2)), and is multiplexed with the HARQ ACK and channel state information (CSI), the second part of the channel state information (CSI) is independently encoded, and at least two of the following UCI information are jointly encoded: the scheduling information (SI), the HARQ ACK, and the first part of the channel state information (CSI);

[0301] When the scheduling information SI is carried on the uplink control channel (corresponding to PUCCH) for reporting (corresponding to UCI overlap situation 6), when multiplexed with the scheduling request SR and the channel state information CSI, the second part of the channel state information CSI is independently encoded, and the following UCI information is jointly encoded: the scheduling information SI, the scheduling request SR and the first part of the channel state information CSI.

[0302] The following describes UCI overlap situations 1-6.

[0303] UCI overlap case 1: When the time domain resources of the scheduling information SI and the scheduling request SR overlap (SI+SR)

[0304] Form 7

[0305] For scenario 0 / 1, since the PUCCH format used by the scheduling information SI can carry more than 2 bits of transmission, the scheduling request SR and the scheduling information SI can be carried simultaneously on the PUCCH resources corresponding to the scheduling information SI for transmission. The bits of the scheduling request SR are concatenated after the bit sequence of the scheduling information SI and jointly encoded. Since there may be multiple scheduling request SR configurations that overlap with the scheduling information SI at the same time, the number of bits of the scheduling request SR is X=log2(K+1) bits, which is used to express whether there is a positive scheduling request SR (Positive SR) and which scheduling request SR configuration has a positive scheduling request SR. K is the number of scheduling request SR configurations that overlap with the scheduling information SI. For example, when X=2 bits, "00" indicates that all scheduling request SR configurations are Negative, "01" indicates that the first scheduling request SR configuration is Positive, "10" indicates that the second scheduling request SR configuration is Positive, and so on.

[0306] UCI overlap case 2: When the time domain resources of scheduling information SI and HARQ-ACK overlap (SI+HARQ-ACK)

[0307] Form 8

[0308] Scenario 0 further includes two scenarios:

[0309] The first scenario is when HARQ-ACK is configured with only one PUCCH resource set. In this case, one PUCCH resource set can only provide PUCCH format 0 or 1 resources.

[0310] The second scenario is when the SPS HARQ-ACK collides with the scheduling information SI. In this case, the HARQ-ACK transmission resource of the SPS PDSCH is a PUCCH format 0 or 1 resource pre-configured by the higher layer signaling.

[0311] In the above scenarios 1 and 2, since the carrying capacity of PUCCH format 0 or 1 is only 1 to 2 bits, CSI cannot be simultaneously carried on the PUCCH resources corresponding to HARQ-ACK.

[0312] If there is SPS HARQ-ACK in the PUCCH resource transmission corresponding to the scheduling information SI, CSI and SPS HARQ-ACK are transmitted simultaneously on the PUCCH resource corresponding to the scheduling information SI.

[0313] Scenario 1:

[0314] For scenario 1, since both the HARQ-ACK and scheduling information SI resources carry more than 2 bits of UCI, CSI and HARQ-ACK can be transmitted simultaneously on the PUCCH resources corresponding to HARQ-ACK. The specific process is: based on the total number of bits of scheduling information SI and HARQ-ACK, a corresponding PUCCH resource set is selected from the PUCCH resource set, and based on the PUCCH resource indication field in the DCI corresponding to HARQ-ACK, a PUCCH resource is further determined in the selected PUCCH resource set for simultaneous transmission of HARQ-ACK, X-bit scheduling request SR (if any), and scheduling information SI.

[0315] UCI overlap case 3: When the time domain resources of scheduling information SI and CSI overlap (SI+CSI)

[0316] Form 9

[0317] For scenario 0, since the resources of scheduling information SI and CSI both carry more than 2 bits of UCI, CSI and scheduling information SI can be transmitted simultaneously on the PUCCH resources corresponding to CSI. The specific process is: based on the total number of bits of CSI and scheduling information SI, a corresponding PUCCH resource set is selected from the PUCCH resource set, and based on the PUCCH resource indication field in the MAC CE corresponding to the scheduling information SI or CSI, a PUCCH resource is further determined in the selected PUCCH resource set for simultaneous transmission of scheduling information SI and CSI. If CSI Part 1 and CSI Part 2 exist at the same time, CSI Part 1 is concatenated and jointly encoded after the scheduling information SI bits, and CSI Part 2 is independently encoded.

[0318] When SI+CSI Part 1 and Part 2 are transmitted simultaneously, further resource allocation is required for SI+CSI Part 1 and CSI Part 2 in the PUCCH resources to support independent encoding and decoding of SI+CSI Part 1 and CSI Part 2. The principle of resource allocation is to first allocate resources to SI+CSI Part 1. That is, the resource size required to transmit the number of bits of SI+CSI Part 1 at the target bit rate is calculated, and the remaining resources in the PUCCH are allocated to CSI Part 2.

[0319] UCI overlap case 4: When the time domain resources of HARQ-ACK, scheduling request SR, and scheduling information SI overlap (HARQ ACK+SR+SI)

[0320] Scenario 0: HARQ ACK uses PUCCH format 0 / 1, the scheduling request SR uses PUCCH format 0 / 1, and the scheduling information SI uses PUCCH format 2 / 3 / 4. Since the PUCCH format used by the scheduling information SI can carry more than 2 bits, the scheduling request SR, HARQ-ACK, and scheduling information SI can be transmitted simultaneously on the PUCCH resources corresponding to the scheduling information SI.

[0321] The HARQ-ACK and scheduling request SR are jointly encoded. If the HARQ-ACK is 1 bit, the combined state of the HARQ-ACK and scheduling request SR can be distinguished by 2 bits. The specific state corresponding to the 2 bits is not specifically restricted here. There can be different ways. For example, 00 and 01 correspond to the HARQ-ACK state when there is no scheduling request SR (Negative SR), and 10 and 11 correspond to the HARQ-ACK state when there is a scheduling request SR (Positive SR).

[0322] If HARQ-ACK is 2 bits, 3 bits can be used to distinguish the combined state of HARQ-ACK and scheduling request SR. 3 bits can represent 8 states, and the specific correspondence between these 8 states is not specifically restricted here. For example, 000, 001, 010, and 011 correspond to the HARQ-ACK states when there is no scheduling request SR (Negative SR); and 100, 101, 110, and 111 correspond to the HARQ-ACK states when there is a scheduling request SR (Positive SR).

[0323] Scenario 1: HARQ ACK uses PUCCH format 2 / 3 / 4, scheduling request SR uses PUCCH format 0 / 1, and scheduling information SI uses PUCCH format 2 / 3 / 4: Since the PUCCH format used by scheduling information SI can carry more than 2 bits of transmission, the scheduling request SR, HARQ-ACK, and scheduling information SI can be carried on the PUCCH resources corresponding to the scheduling information SI or HARQ ACK for transmission. For example, the scheduling request SR bit is concatenated after the HARQ-ACK bit sequence and jointly encoded. Since there may be multiple scheduling request SR configurations that overlap with HARQ-ACK at the same time, the number of bits of the scheduling request SR is bits, used to express whether there is a scheduling request SR (Positive SR) and which scheduling request SR configuration has the Positive scheduling request SR, where K is the number of scheduling request SR configurations overlapping with HARQ-ACK. For example, when X = 2 bits, "00" indicates that all scheduling request SR configurations are Negative, "01" indicates that the first scheduling request SR configuration is Positive, "10" indicates that the second scheduling request SR configuration is Positive, and so on. Then, the number of bits (bits) of the joint encoding of HARQ ACK and scheduling request SR and the scheduling information SI are combined to calculate the total number of bits, and a corresponding PUCCH resource set is selected from the PUCCH resource set corresponding to the scheduling information SI or HARQ ACK. According to the PUCCH resource indication field in the DCI corresponding to HARQ-ACK / SI, a PUCCH resource is further determined in the selected PUCCH resource set for simultaneous transmission of HARQ-ACK, X-bit scheduling request SR (if any) and scheduling information SI.

[0324] UCI overlap case 5: When the time domain resources of HARQ-ACK, CSI, and scheduling information SI overlap (HARQ ACK+CSI+SI)

[0325] Scenario 0: HARQ ACK uses PUCCH format 0 / 1, CSI uses PUCCH format 2 / 3 / 4, and scheduling information SI uses PUCCH format 2 / 3 / 4.

[0326] Scenario 0 further includes two scenarios:

[0327] Scenario 1 is when HARQ-ACK is configured with only one PUCCH resource set. In this case, one PUCCH resource set can only provide PUCCH format 0 or 1 resources.

[0328] Scenario 2 is the case where SPS HARQ-ACK collides with CSI and scheduling information SI. In this case, the HARQ-ACK transmission resource of the SPS PDSCH is a PUCCH format 0 or 1 resource pre-configured by high-layer signaling.

[0329] In the above scenarios 1 and 2, since the carrying capacity of PUCCH format 0 or 1 is only 1 to 2 bits (bit), CSI cannot be carried simultaneously on the PUCCH resources corresponding to HARQ-ACK. If the PUCCH resources corresponding to CSI or scheduling information SI transmit HARQ-ACK corresponding to the downlink transmission of DCI, considering the missed detection of DCI, the base station (such as TRP20a or TRP 20b) needs to blindly detect whether there is a HARQ-ACK bit on the PUCCH resources corresponding to CSI or scheduling information SI. Therefore, for scenario 1, the base station needs to avoid configuring the UE to transmit HARQ-ACK and CSI or scheduling information SI at the same time; for scenario 2, since the UE and the base station can always determine the presence of SPS HARQ-ACK, placing SPS HARQ-ACK on the PUCCH resources corresponding to CSI or scheduling information SI for transmission will not cause blind detection problems for the base station. Therefore, scenario 2 supports the simultaneous transmission of CSI, scheduling information SI and SPS HARQ-ACK on the PUCCH resources corresponding to CSI or scheduling information SI.

[0330] If both CSI Part 1 and CSI Part 2 exist, the possible encoding methods are as follows:

[0331] (1) HARQ-ACK concatenation is jointly coded after or before the CSI Part 1 bit, and the scheduling information SI and CSI Part 2 are coded independently;

[0332] (2) HARQ-ACK concatenation is jointly coded after or before the scheduling information SI bit, and CSI Part 1 and Part 2 are coded independently;

[0333] (3) HARQ-ACK is encoded together with CSI Part 1 and scheduling information SI. There is no restriction on the specific position of HARQ ACK. It can be cascaded after or before the CSI Part 1 bit, or after or before the scheduling information SI. CSI Part 2 is encoded independently.

[0334] Scenario 1: HARQ ACK uses PUCCH format 2 / 3 / 4, CSI uses PUCCH format 2 / 3 / 4, and scheduling information SI uses PUCCH format 2 / 3 / 4;

[0335] Since HARQ-ACK, scheduling information SI and CSI resources all carry more than 2 bits of UCI, the above information can be transmitted simultaneously on the PUCCH resources corresponding to HARQ-ACK. The specific process is as follows:

[0336] (1) Based on the total number of bits of CSI, scheduling information SI and HARQ-ACK, a corresponding PUCCH resource set is selected from the PUCCH resource set. Based on the PUCCH resource indication field in the DCI corresponding to HARQ-ACK, a PUCCH resource is further determined in the selected PUCCH resource set for simultaneous transmission of HARQ-ACK, scheduling information SI and CSI.

[0337] (2) If both CSI Part 1 and CSI Part 2 exist, CSI Part 1 is concatenated and jointly encoded after the HARQ-ACK bit, and the scheduling information SI and CSI Part 2 can be encoded independently, or HARQ-ACK, scheduling information SI and CSI Part 1 are jointly encoded, and CSI Part 2 is encoded independently. The order of HARQ-ACK, scheduling information SI and CSI Part 1 can be unrestricted.

[0338] UCI overlap case 6: When the time domain resources of CSI, scheduling request SR and scheduling information SI overlap (CSI+SR+SI)

[0339] When the scheduling request SR overlaps with the scheduling information SI and CSI, since the scheduling information SI and CSI use PUCCH format 2 / 3 / 4, the X-bit scheduling request SR and the CSI or scheduling information SI are transmitted simultaneously on the CSI or scheduling information SI resources.

[0340] The Scheduling Request (SR) bits are concatenated after the Scheduling Information (SI) bit sequence and jointly encoded. Since multiple Scheduling Request (SR) configurations may overlap with the Scheduling Information (SI), the number of Scheduling Request (SR) bits is X = log2(K+1) bits, which is used to express whether there is a Scheduling Request (SR) (Positive SR) and which Scheduling Request (SR) configuration is Positive, where K is the number of Scheduling Request (SR) configurations that overlap with the Scheduling Information (SI). For example, when X = 2 bits, "00" indicates that all Scheduling Request (SR) configurations are Negative, "01" indicates that the first Scheduling Request (SR) configuration is Positive, "10" indicates that the second Scheduling Request (SR) configuration is Positive, and so on.

[0341] Based on the total number of bits of CSI, scheduling information (SI), and scheduling request (SR), a corresponding PUCCH resource set is selected from the PUCCH resource sets. Based on the PUCCH resource indicator field in the MAC CE corresponding to the scheduling information (SI) or CSI, a PUCCH resource is further determined within the selected PUCCH resource set for simultaneous transmission of the scheduling information (SI), CSI, and scheduling request (SR). If both CSI Part 1 and CSI Part 2 are present, CSI Part 1, SI, and scheduling request (SR) are jointly coded, while CSI Part 2 is independently coded.

[0342] Example 9:

[0343] This embodiment illustrates that UCI is transmitted on the PUSCH.

[0344] In some embodiments, when the uplink shared channel (corresponding to PUSCH) and the uplink control channel (corresponding to PUCCH) multiplex uplink control information UCI, if the UCI contains scheduling information SI, the scheduling information SI is carried on the uplink shared channel (corresponding to PUSCH).

[0345] In some embodiments, when the channel state information CSI carried by the uplink shared channel includes two parts, CSI Part 1 (CSI Part 1) and CSI Part 2 (CSI Part 2), the CSI Part 1 (CSI Part 1) is jointly encoded with the scheduling information SI, and the CSI Part 2 (CSI Part 2) is independently encoded.

[0346] The following describes an example of transmitting UCI on the PUCCH / PUSCH.

[0347] When the PUSCH carries aperiodic channel state information (A-CSI) or semi-persistent CSI (SP-CSI), the scheduling information (SI) carried by the PUCCH is transferred to the PUSCH for transmission. When the CSI includes CSI Part 1 (CSI Part 1) and CSI Part 2 (CSI Part 2), CSI Part 1 can be jointly coded and mapped with the scheduling information (SI), while CSI Part 2 is independently coded.

[0348] When the PUSCH carries scheduling information SI, the P-CSI or SP-CSI carried by the PUCCH is transferred to the PUSCH for transmission. When the CSI consists of CSI Part 1 and CSI Part 2, CSI Part 1 can be jointly coded and mapped with the scheduling information SI, and CSI Part 2 is independently coded.

[0349] When the PUSCH carries the scheduling information SI, the HARQ-ACK carried by the PUCCH is transferred to the PUSCH for transmission, and the HARQ-ACK and the scheduling information SI are independently encoded and mapped.

[0350] When the PUSCH carries scheduling information SI, the HARQ-ACK and P-CSI or SP-CSI carried by the PUCCH are transferred to the PUSCH for transmission. At the same time, the HARQ-ACK is independently encoded and mapped, and the scheduling information SI can be jointly encoded and mapped with the first part of the CSI (CSI Part 1). The second part of the CSI (CSI Part 2) is independently encoded or directly discarded when PUSCH resources are limited.

[0351] When P-CSI or SP-CSI is carried on PUSCH, the HARQ-ACK and scheduling information SI carried by PUCCH are transferred to PUSCH for transmission. At the same time, HARQ-ACK is independently encoded and mapped, and the scheduling information SI can be jointly encoded and mapped with the first part of CSI (CSI Part 1). The second part of CSI (CSI Part 2) is independently encoded or directly discarded when PUSCH resources are limited.

[0352] Example of 3 antenna ports:

[0353] The following proposes a codebook enhancement scheme design for a Multiple Input Multiple Output (MIMO) communication system. The following embodiments support uplink 3Tx codebook design when existing Sounding Reference Signal (SRS) resources only support 1, 2, 4, and 8 antenna ports. The present invention primarily designs the scheme from aspects such as the configuration of SRS resources and the indication of the Transmit Precoding Matrix Indicator (TPMI) and Transmit Rank Indicator (TRI).

[0354] The solution provided by the present invention allows the terminal to support the uplink 3-transceiver (TRx) channel codebook solution, thereby improving uplink coverage and throughput. Furthermore, the solution of the present invention optimizes the indication values ​​of TRI and TPMI, which can reduce the overhead of base station indications.

[0355] NR systems are designed to provide diverse services to support a variety of businesses. However, the large uplink transmission requirements of some services are limited by the limited coverage and throughput of NR systems. Increasing uplink throughput is a challenge.

[0356] In practice, commercial handheld devices, such as current smartphones, are typically limited to using only two transmit chains. Consequently, their uplink throughput is limited. Although the NR specification supports up to four RF channels, various commercial factors, including power amplifier costs and the size limitations of commercial handsets, have made the use of four channels difficult to implement in commercial devices in the near future.

[0357] On the other hand, with the successful evolution of hardware, advanced smartphones are now capable of supporting three antenna ports and transmit chain RF channels within the same frequency band. This allows devices to improve uplink throughput by using one more RF channel than with only two. Compared to devices with only two RF channels, devices with three RF channels can achieve significant gains in uplink throughput, up to 50%. This provides a superior user experience for services with heavy uplink traffic.

[0358] In a codebook-based uplink transmission solution, the terminal first sends an SRS signal to the base station to obtain uplink CSI.

[0359] The base station performs uplink channel detection based on the SRS signal sent by the terminal, determines the SRS resource corresponding to the uplink transmission, the number of layers of the uplink transmission (the number of layers indicated by TRI) and the precoding matrix (Transmit Precoding Matrix), and further determines the modulation and coding scheme (MCS) level of the uplink transmission based on the precoding matrix and channel information. The base station then notifies the terminal of the resource allocation of the physical uplink shared channel (PUSCH) and the corresponding MCS, TPMI, rank (number of transmission layers) (the number of layers indicated by TRI) and the corresponding sounding reference signal resource indicator (SRI).

[0360] The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI and the number of transmission layers (the number of layers indicated by TRI) to determine the precoding matrix and the number of transmission layers used when sending the data, and then precodes the data and sends it to the base station.

[0361] In a non-codebook uplink transmission scheme, the terminal first measures the downlink reference signal to obtain a candidate uplink precoding matrix, and then precodes the SRS signal sent by the terminal based on the candidate precoding matrix. The terminal then sends the SRS signal to the base station.

[0362] The base station performs uplink channel detection based on the SRS signal sent by the terminal, determines the SRS resource corresponding to the uplink transmission and the MCS level for the uplink transmission, and notifies the terminal. The base station indicates the SRS resource through the SRI. The base station sends the SRI and MCS to the terminal.

[0363] The terminal modulates and encodes the data according to the MCS sent by the base station, determines the precoding and transmission layer of the data using the SRI, and precodes the data before sending it to the base station.

[0364] Unless the higher layer parameter ul-FullPowerTransmission is set to 'fullpowerMode2', when multiple SRS resources are configured in a codebook-based manner via an SRS resource set (SRS-ResourceSet), the terminal expects all these SRS resources (SRS-Resource) in the SRS-ResourceSet to be configured with the same number of SRS ports (configured by the value of the higher layer parameter nrofSRS-Ports).

[0365] One technical issue is that existing SRS resources support 1, 2, 4, or 8 antenna ports, but not 3. The design of a codebook solution for 3 antenna ports requires solving the following technical problems: how to configure SRS reference signal resources and how to design a codebook for 3 antenna ports?

[0366] Another technical issue is how to enhance the SRI indication and TPMI information based on different SRS resource configurations for the uplink 3-antenna port codebook?

[0367] The present invention aims to solve the above-mentioned technical problems and proposes a technical solution. First, the terminal needs to report the terminal capability for the 3-antenna port (3Tx) codebook.

[0368] Secondly, the present invention also enhances SRS resource configuration. For a three-antenna port (3Tx) codebook, due to the existing SRS resource port number limit, the base station needs to perform corresponding adaptation when configuring SRS resources. For example, SRS resource configuration for three antenna ports can be achieved using SRS resources for four antenna ports, or SRS resource configuration for three antenna ports can be achieved by configuring multiple SRS resources for one and / or two antenna ports.

[0369] Finally, the present invention also enhances the indication signaling of SRI, TRI and TPMI. When indicating SRI, TRI and TPMI, in order to reduce the indication overhead of the base station, the indication can be simplified by joint coding.

[0370] 16 , a codebook-based transmission method supporting 3 antenna ports according to an embodiment of the present invention is described below.

[0371] Step S201: The terminal 10a reports the capability of supporting a 3-antenna port codebook to the base station 20. The capability is used to indicate support for codebook-based transmission of 3 antenna ports.

[0372] Step S202: The base station 20 sends SRS resource configuration to the terminal 10a.

[0373] Step S203: the terminal 10a sends an SRS signal for uplink transmission based on a codebook on the SRS resource of the SRS resource configuration according to the SRS resource configuration.

[0374] Step S204: The base station 20 determines uplink grant information such as SRI, TRMI, MCS, and the number of transmission layers.

[0375] Step S205: The base station 20 sends the uplink grant information such as the SRI, TRMI, MCS, and the number of transmission layers to the terminal 10a.

[0376] Step S206: The terminal 10a performs codebook-based uplink transmission, such as PUSCH transmission, according to the uplink grant information such as the SRI, TRMI, MCS, and the number of transmission layers.

[0377] 17 , an embodiment of a codebook-based transmission method supporting 3 antenna ports according to an embodiment of the present invention is described below.

[0378] Step S211: The terminal 10a reports a capability indicating support for codebook-based transmission with three antenna ports. The base station 20 receives the reported capability.

[0379] Step S212: The base station 20 sends configuration information of a sounding reference signal resource set to the terminal 10a. The terminal 10a receives the configuration information of the sounding reference signal resource set, wherein the SRS resource set is used for uplink codebook design, and the SRS resource set includes at least one SRS resource group, wherein the SRS resource group consists of SRS resources of no more than three antenna ports.

[0380] Step S213: The terminal 10a performs SRS uplink transmission using at least one SRS resource group in the SRS resource set. The base station 20 receives the SRS uplink transmission and measures an uplink channel according to the SRS of the SRS uplink transmission.

[0381] Step S215: The base station 20 determines and sends SRS resource group indication information and a transmit precoding matrix indicator TPMI to the terminal 10a. The terminal 10a receives the SRS resource group indication information and the transmit precoding matrix indicator TPMI indicated by the base station.

[0382] Step S216: The terminal 10a performs codebook-based uplink transmission, such as PUSCH transmission, according to the uplink grant information such as the SRI and TRMI. The base station 20 receives the uplink transmission.

[0383] In some embodiments, the SRS resource group includes one SRS resource with one antenna port and one SRS resource with two antenna ports.

[0384] In some embodiments, the SRS resource group includes three SRS resources with one antenna port.

[0385] In some embodiments, the terminal receives downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS;

[0386] The number of bits of the SRI is where N SRS-group The number of the SRS resource groups configured in the SRS resource set.

[0387] In some embodiments, the TPMI is jointly encoded with the rank number.

[0388] In some embodiments, for different SRS resources in the SRS resource set, each antenna port occupies the same number of symbols in the time domain, or occupies the same symbols.

[0389] 18 , an embodiment of a codebook-based transmission method supporting 3 antenna ports according to an embodiment of the present invention is described below.

[0390] Step S221: The terminal 10a reports a capability indicating support for codebook-based transmission with three antenna ports. The base station 20 receives the reported capability.

[0391] Step S222-1: The base station 20 sends configuration information of a sounding reference signal resource set to the terminal 10a. The terminal 10a receives the configuration information of the sounding reference signal resource set, wherein the SRS resource set is used for uplink codebook design and includes at least one SRS resource for four antenna ports.

[0392] Step S222-2: The base station 20 sends an antenna port number indication or antenna port indication. The terminal 10a receives the antenna port number indication or antenna port indication, wherein the antenna port number indication is used to indicate the number of antenna ports used by the terminal, and the antenna port indication is used to indicate the antenna ports used by the terminal.

[0393] Step S223: The terminal 10a performs SRS uplink transmission using at least one SRS resource in the SRS resource set. The base station 20 receives the SRS uplink transmission and measures an uplink channel according to the SRS of the SRS uplink transmission.

[0394] Step S225: The base station 20 determines and sends SRS resource group indication information and a transmit precoding matrix indicator TPMI to the terminal 10a. The terminal 10a receives the SRS resource group indication information and the transmit precoding matrix indicator TPMI indicated by the base station.

[0395] Step S226: The terminal 10a performs codebook-based uplink transmission, such as PUSCH transmission, according to the uplink grant information such as the SRI and TRMI. The base station 20 receives the uplink transmission.

[0396] In some embodiments, the three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or downlink control information DCI.

[0397] In some embodiments, three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

[0398] In some embodiments, the three antenna ports in the SRS resource are indicated as antenna ports to be used by way of a combination number, and the bit overhead of the combination number is Where N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set (SRS-ResourceSet), and N s It indicates the number of antenna ports selected for use in the SRS resource.

[0399] In some embodiments, further comprising:

[0400] Receiving downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS;

[0401] The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

[0402] In some embodiments, the TPMI is jointly encoded with the rank number.

[0403] 19 , an embodiment of a codebook-based transmission method supporting 3 antenna ports according to an embodiment of the present invention is described below.

[0404] Step S231: The terminal 10a reports a capability indicating support for codebook-based transmission with three antenna ports. The base station 20 receives the reported capability.

[0405] Step S232-1: The base station 20 sends configuration information of a sounding reference signal resource set to the terminal 10a. The terminal 10a receives the configuration information of the sounding reference signal resource set, wherein the SRS resource set is used for uplink codebook design and includes at least one SRS resource for four antenna ports.

[0406] Step S232-2: The terminal 10a selects three of the four antenna ports as antenna ports used by the terminal and reports antenna port information, wherein the antenna port information is used to indicate the antenna ports used by the terminal. The base station 20 receives the antenna port information.

[0407] Step S233: The terminal 10a performs SRS uplink transmission using at least one SRS resource in the SRS resource set. The base station 20 receives the SRS uplink transmission and measures an uplink channel according to the SRS of the SRS uplink transmission.

[0408] Step S235: The base station 20 determines and sends SRS resource group indication information and a transmit precoding matrix indicator TPMI to the terminal 10a. The terminal 10a receives the SRS resource group indication information and the transmit precoding matrix indicator TPMI indicated by the base station.

[0409] Step S236: The terminal 10a performs codebook-based uplink transmission, such as PUSCH transmission, according to the uplink grant information such as the SRI and TRMI. The base station 20 receives the uplink transmission.

[0410] In some embodiments, the terminal reports selected antenna port information, wherein the antenna port information is used to indicate an antenna port used by the terminal, and the base station receives the antenna port information.

[0411] In some embodiments, in the antenna port information, the three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or uplink control information UCI.

[0412] In some embodiments, in the antenna port information, three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

[0413] In some embodiments, in the antenna port information, the three antenna ports in the SRS resource are indicated as antenna ports to be used by way of a combination number, and the bit overhead of the combination number is Where N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set (SRS-ResourceSet), and N s It indicates the number of antenna ports selected for use in the SRS resource.

[0414] In some embodiments, the base station sends downlink control information DCI, and the terminal receives downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS;

[0415] The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

[0416] In some embodiments, the TPMI is jointly encoded with the rank number.

[0417] Example B1

[0418] The existing SRS resources support 1 / 2 / 4 / 8 antenna ports, but do not support 3 antenna ports. When codebook-based uplink transmission is adopted, when the upper layer parameter uplink full power transmission 'FullPowerTransmission' in the Radio Resource Control (RRC) is configured as 'fullpower', the base station can configure 1 SRS resource with 1 antenna port and 1 SRS resource with 2 antenna ports in an SRS resource set (SRS-ResourceSet) to implement the SRS resource configuration of 3 antenna ports. The specific configuration method can be that an SRS resource set is configured with at least 1 SRS resource group, and each SRS resource group contains 1 SRS resource with 1 antenna port and 1 SRS resource with 2 antenna ports. For example, in an SRS resource set (SRS-ResourceSet), 2 SRS resource groups are configured, and each resource group contains 1 SRS resource with 1 antenna port and 1 SRS resource with 2 antenna ports. The above configuration can be indicated through RRC signaling. At the same time, for different SRS resources in the same SRS resource set, each antenna port occupies the same number of symbols in the time domain, or occupies the same symbols, which helps to ensure that the coverage of all antenna ports is basically consistent.

[0419] Based on the above configuration, when the terminal needs to validate codebook-based transmission of 3 antenna ports (3Tx), based on the non-coherent codebook information of the 3 antenna ports in embodiment B1, the following steps are mainly performed:

[0420] Step F1: The terminal reports its capability, indicating that it supports codebook-based transmission with three antenna ports (3Tx).

[0421] Step F2: The base station configures SRS resources for the terminal via RRC based on the capabilities reported by the terminal. For example, the base station configures one or two SRS resource sets for the terminal, where each resource set contains one or more SRS resource groups, and each resource group contains one SRS resource for one antenna port and one SRS resource for two antenna ports.

[0422] Step F3: The terminal sends an uplink SRS signal based on the SRS resource configuration sent by the base station.

[0423] Step F4: The base station determines information such as SRI, TPMI, MCS level and number of transmission layers based on the measurement result of the SRS signal, and indicates the SRI, TPMI, MCS and number of transmission layers to the terminal through DCI. In the DCI information, when uplink full power transmission 'FullPowerTransmission' is not configured, or is configured as 'fullpower', and transmission precoding is not effective, the maximum rank is 3, and the codebook type is "non-coherent codebook", the number of SRI indication bits is where N SRS-group The number of SRS resource groups configured in the SRS resource set (SRS-ResourceSet) used for codebook transmission. Precoding information and the number of layers are indicated by 3 bits. The meanings of the corresponding bit indications are shown in Table 10. In addition, this embodiment provides the non-coherent codebook representation corresponding to 3 antenna ports (3Tx) as shown in Table 11.

[0424] Step F5: The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI and number of transmission layers to determine the precoding matrix and number of transmission layers used when sending the data, and then precodes the data and sends it to the base station.

[0425] Table 10: Precoding information and number of layers for 3 antenna ports

[0426] Table 11: Non-coherent codebook for 3 antenna ports

[0427] The non-coherent codebook for 11 antenna ports in Table 10 above is applicable to all embodiments of the present invention.

[0428] Example B2

[0429] The existing SRS resources support 1 / 2 / 4 / 8 antenna ports, but do not support 3 antenna ports. When codebook-based uplink transmission is adopted, when the upper layer parameter uplink full power transmission 'FullPowerTransmission' in RRC is configured as 'fullpower', the base station can implement the SRS resource configuration of 3 antenna ports by configuring 3 SRS resources with 1 antenna port in an SRS resource set (SRS-ResourceSet). The specific configuration method can be that an SRS resource set is configured with at least 3 SRS resources with 1 antenna port, for example, 6 SRS resources with 1 antenna port are configured, where each group of three can be divided into 2 SRS resource groups, that is, each SRS resource group contains 3 SRS resources with 1 antenna port. The base station can indicate the above configuration through RRC signaling. At the same time, for different SRS resources in the same SRS resource set, each antenna port occupies the same number of symbols in the time domain, or occupies the same symbols, which helps to ensure that the coverage of all antenna ports is basically consistent.

[0430] Based on the above configuration, when the terminal needs to validate codebook-based transmission of 3 antenna ports (3Tx), based on the non-coherent codebook information of the 3 antenna ports in embodiment B1, the following steps are mainly performed:

[0431] Step G1: The terminal reports its capability, indicating that it supports codebook-based transmission with three antenna ports (3Tx).

[0432] Step G2: The base station configures SRS resources for the terminal via RRC based on the capabilities reported by the terminal. For example, the base station configures one or two SRS resource sets for the terminal, where each SRS resource set contains one or more SRS resource groups, and each resource group contains three SRS resources with one antenna port.

[0433] Step G3: The terminal sends an uplink SRS signal based on the SRS resource configuration sent by the base station.

[0434] Step G4: The base station determines information such as SRI, TPMI, MCS level and number of transmission layers based on the measurement results of the SRS signal, and indicates the SRI, TPMI, MCS and number of transmission layers to the terminal through DCI. In the DCI information, when the uplink full power transmission 'FullPowerTransmission' is not configured, or is configured as 'fullpower', and the transmission precoding is not effective, the maximum rank is 3, and the codebook type is "non-coherent codebook", TPMI is indicated by 3 bits. The meaning of the corresponding bit indication is shown in the following table. The number of SRI indication bits is where N SRS-groupThe number of SRS resource groups configured in the SRS resource set (SRS-ResourceSet).

[0435] Step G5: The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI and number of transmission layers to determine the precoding matrix and number of transmission layers used when sending the data, and then precodes the data and sends it to the base station.

[0436] Example B3

[0437] The existing SRS resources support 1 / 2 / 4 / 8 antenna ports, but do not support 3 antenna ports. When codebook-based uplink transmission is adopted, when the upper layer parameter uplink full power transmission 'FullPowerTransmission' in RRC is configured as 'fullpower', the base station can implement the SRS resource configuration of 3 antenna ports by selecting 3 antenna ports from the 4-antenna port SRS resources. The specific configuration method may be to configure at least one SRS resource set through RRC. The SRS resource set (SRS-ResourceSet) contains at least one SRS resource with 4 antenna ports. For example, in one SRS resource set (SRS-ResourceSet), 2 SRS resources with 4 antenna ports are configured, and the terminal is indicated by RRC signaling which antenna ports are actually effective, or which antenna ports are effective in a standard manner. For example, the three antenna ports with a smaller port count are indicated to be effective / used through RRC / DCI / MAC CE signaling, or the three antenna ports with a smaller port count are effective / used through standard agreement. In this way, the terminal may not map the data stream to the antenna port that is not indicated as valid / used during processing, and may not map the antenna port that is not indicated as valid / used to the corresponding physical antenna / RF channel during precoding. Based on the above configuration, when the terminal needs to enable 3-antenna-port (3Tx) codebook-based transmission, based on the non-coherent codebook information of the 3 antenna ports in embodiment B1, the following steps are mainly performed:

[0438] Step H1: The terminal reports its capability, indicating that it supports codebook-based transmission with three antenna ports (3Tx);

[0439] Step H2: The base station configures SRS resources for the terminal through RRC based on the capabilities reported by the terminal. For example, the base station configures 1 or 2 SRS resource sets for the terminal, where each SRS resource set contains at least 1 SRS resource with 4 antenna ports. At the same time, the base station will indicate which antenna ports are actually used / effective to the terminal. The base station can indicate the antenna ports to be used / effective through RRC / MAC CE / DCI signaling. For example, in RRC, the antenna ports to be used / not used are indicated by a bitmap, or the antenna ports to be used / not used are indicated by a combination number. The bit overhead of the indication is Where N represents the number of antenna ports corresponding to the SRS resources configured in the SRS-ResourceSet, and N s It indicates the number of antenna ports selected for use in the aforementioned SRS resources.

[0440] Step H3: The terminal sends an uplink SRS signal based on the SRS resource configuration sent by the base station.

[0441] Step H4: The base station determines information such as SRI, TPMI, MCS level and number of transmission layers based on the measurement result of the SRS signal, and indicates the SRI, TPMI, MCS level and number of transmission layers to the terminal through DCI. In the DCI information, when the uplink full power transmission 'FullPowerTransmission' is not configured, or is configured as

[0442] When 'fullpower' is used, and transmission precoding is not effective, the maximum rank is 3, and the codebook type is "non-coherent codebook", TPMI is indicated by 3 bits. The meaning of the corresponding bit indication is shown in the following table. The number of SRI indication bits is where N SRS It is the number of SRS resources configured in the SRS resource set (SRS-ResourceSet). Furthermore, for the non-coherent codebook of 3 antenna ports, the non-coherent codebook of 4 antenna ports in the standard can be reused. The specific correspondence can be related to which antenna ports are valid / used according to the RRC / DCI / MAC CE configuration mentioned above. For example, if the RRC / DCI / MAC CE indicates 3 antenna ports with a smaller valid antenna port count, then the corresponding non-coherent 3-antenna port (3Tx) codebook can take the first 3 non-coherent codebooks of 4 antenna ports, and the specific form is the same as the non-coherent codebook in Example B1.

[0443] Step H5: The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI and number of transmission layers to determine the precoding matrix and number of transmission layers used when sending the data, and then precodes the data and sends it to the base station.

[0444] Example B4

[0445] The existing SRS resources support 1 / 2 / 4 / 8 antenna ports, but not 3 antenna ports. When codebook-based uplink transmission is adopted, when the upper layer parameter uplink full power transmission 'FullPowerTransmission' in RRC is configured as 'fullpower', the base station can implement 3-antenna-port SRS resource configuration by selecting 3 antenna ports from the 4-antenna-port SRS resources. The specific configuration method can be to configure at least one SRS resource set through RRC, and the SRS resource set (SRS-ResourceSet) contains at least one SRS resource with 4 antenna ports. For example, in one SRS resource set (SRS-ResourceSet), 2 SRS resources with 4 antenna ports are configured, and the terminal is indicated by RRC signaling as to how many antenna ports are actually effective, or how many antenna ports are effective through standard agreement. For example, the activation / use of three antenna ports is indicated by RRC / DCI / MAC CE signaling, or by standard agreement, so that the terminal can select three of the antenna ports during processing, and when performing port mapping, the data stream is not mapped to the unselected antenna port, and when performing precoding, the unselected antenna port is not mapped to the corresponding physical antenna / RF channel, and the terminal can inform the base station of the selected antenna ports through MAC CE or UCI, or it may not inform the base station of the specific selected antenna ports. Based on the above configuration, when the terminal needs to activate the codebook-based transmission of 3 antenna ports (3Tx), based on the non-coherent codebook information of the 3 antenna ports in embodiment B1, the following steps are mainly performed:

[0446] Step K1: The terminal reports its capability, indicating that it supports codebook-based transmission with three antenna ports (3Tx);

[0447] Step K2: The base station configures SRS resources for the terminal via RRC based on the capabilities reported by the terminal. For example, the base station configures one or two SRS resource sets for the terminal, where each resource set contains at least one SRS resource for four antenna ports. At the same time, the base station indicates the number of antenna ports actually used / not used by the terminal. The indication method can be RRC / MAC CE / DCI. For example, in RRC, one bit is used to indicate the number of unused antenna ports, two bits are used to indicate the number of used antenna ports, or one bit is used to indicate whether all ports are used. 0 indicates that some antenna ports are used, and one of them can be defaulted to be unused.

[0448] Step K3: The terminal sends an uplink SRS signal based on the SRS resource configuration sent by the base station;

[0449] Step K4: The base station determines information such as SRI, TPMI, MCS level and number of transmission layers based on the measurement result of the SRS signal, and indicates the SRI, TPMI, MCS level and number of transmission layers to the terminal through DCI. In the DCI information, when uplink full power transmission 'FullPowerTransmission' is not configured, or is configured as 'fullpower', and transmission precoding is not effective, the maximum rank is 3, and the codebook type is "non-coherent codebook", the number of SRI indication bits is where N SRS The number of SRS resources configured in the SRS resource set (SRS-ResourceSet) is indicated by 3 bits in the TPMI. The meaning of the corresponding bit indication is shown in Table 1 in Example B1. Furthermore, for the non-coherent codebook of 3 antenna ports, the non-coherent codebook of 4 antenna ports in the standard can be reused. The specific correspondence can be configured according to the RRC / DCI / MAC CE signaling mentioned above to enable / use several antenna ports. For example, the effectiveness of 3 antenna ports is indicated by RRC / DCI / MAC CE signaling. The terminal can select three antenna ports for port mapping during implementation, and then determine the non-coherent 3-antenna port (3Tx) codebook based on the selected port combined with the non-coherent codebook of 4 antenna ports. The specific form is the same as the non-coherent codebook in Example B1.

[0450] Step K5: The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI and the number of transmission layers to determine the precoding matrix and the number of transmission layers used when sending the data, and then precodes the data and sends it to the base station.

[0451] Example B5

[0452] The existing SRS resources support 1 / 2 / 4 / 8 antenna ports, but do not support 3 antenna ports. When codebook-based uplink transmission is adopted, a new SRS resource configuration for 3 antenna ports can be added. When the terminal needs to validate the codebook-based transmission of 3 antenna ports (3Tx), the specific configuration method may be that an SRS resource set is configured with at least 1 SRS resource with 3 antenna ports, for example, in an SRS resource set (SRS-ResourceSet), 2 SRS resources with 3 antenna ports are configured; the base station may indicate the above configuration through RRC signaling. Based on the above configuration, when the terminal needs to validate the codebook-based transmission of 3 antenna ports (3Tx), based on the non-coherent codebook information of the 3 antenna ports in Example B1, the following steps are mainly performed:

[0453] Step M1: The terminal reports its capability, indicating that it supports codebook-based transmission with three antenna ports (3Tx).

[0454] Step M2: The base station configures SRS resources for the terminal via RRC based on the capabilities reported by the terminal. For example, the base station configures one or two SRS resource sets for the terminal, where each resource set contains one or more SRS resources for three antenna ports.

[0455] Step M3: The terminal sends an uplink SRS signal based on the SRS resource configuration sent by the base station. The configuration of the SRS signal meets the constraints of the above-mentioned SRS resource configuration.

[0456] Step M4: The base station determines information such as SRI, TPMI, MCS level and number of transmission layers based on the measurement results of the SRS signal, and indicates the SRI, TPMI, MCS level and number of transmission layers to the terminal through DCI. In the DCI information, when the uplink full power transmission 'FullPowerTransmission' is not configured, or is configured as 'fullpower', and the transmission precoding is not effective, the maximum rank is 3, and the codebook type is "non-coherent codebook", TPMI is indicated by 3 bits, and the meaning of the corresponding bit indication is shown in the following table. The number of SRI indication bits is where N SRS The number of SRS resources configured in the SRS resource set (SRS-ResourceSet).

[0457] Step M5: The terminal modulates and encodes the data according to the MCS sent by the base station, and uses the SRI, TPMI, and number of transmission layers to determine the precoding matrix and rank (number of transmission layers) used when sending the data. The terminal then precodes the data and sends it to the base station. When TPMI is indicated, the TRI information and TPMI information are indicated by joint coding. The specific indication method is shown in Table 12.

[0458] Method 1:

[0459] Table 12: Precoding information and number of layers for 3 antenna ports

[0460] The base station can determine, based on the configuration of the SRS resource signal, that "no indication by default" actually corresponds to layer 3: TPMI = 0. For example, the base station configures uplink full power transmission 'FullPowerTransmission' to 'fullpower' through RRC, the high-layer parameter configuration used in 'SRS-ResourceSet' is 'codebook', and the corresponding SRS resource set is configured in the form of the SRS resource group in Example B1, then layer 3: TPMI = 0 can be not indicated by default.

[0461] Method 2:

[0462] The TRI and TPMI information joint coding indication may also be in the form shown in Table 13:

[0463] Table 13: Precoding information and number of layers for 3 antenna ports

[0464] Based on the above approach, only when the maximum rank is 3 does the TRI+TPMI indication require a 3-bit indication, while in other cases a maximum of a 2-bit indication is required.

[0465] Method 3:

[0466] The TRI and TPMI information joint coding indication may also be in the form shown in Table 14:

[0467] Table 14: Precoding information and number of layers for 3 antenna ports

[0468] Based on the above approach, only when the maximum rank is 3 does the TRI+TPMI indication require 3 bits, while in other cases only a maximum of 2 bits is required.

[0469] Furthermore, the existing PUSCH does not support 3 antenna ports, so a new PUSCH with 3 antenna ports can be added, or a PUSCH with 4 antenna ports can be selected. 3 PUSCH antenna ports are selected to transmit uplink service data or UCI information. The specific selection of the 3 PUSCH antenna ports can be determined according to the SRS antenna port selection method in Example B3 and Example B4. It can be indicated by the base station to the terminal, or selected by the terminal and notified to the base station, or determined by the standard constraints mentioned in Example B3 and Example B4.

[0470] Referring to Figure 20, UE 100 may include a processor 11a, a memory 12a, and a transceiver 13a. The processor 11a is configured to invoke and execute a computer program stored in the memory 12a, so that the UE 100, in which the processor 11 is installed, performs the disclosed methods, steps, and / or UE functions. UE 100 is an example of a UE described herein (e.g., UE 10, UE 10a, or UE 10b). The transceiver 13a may include baseband circuitry and radio frequency (RF) circuitry.

[0471] Referring to Figure 21, network node 200 is a network device that may include a processor 21a, a memory 22a, and a transceiver 23a. The processor 21a is configured to invoke and execute a computer program stored in the memory 22a, causing the network node 200, in which the processor 21a is installed, to perform methods, steps, and / or functions of a network node. The network node 200 is an example of a CN network entity, a network node, a radio node, a TRP, a base station, or a gNB as described herein. The transceiver 23a may include baseband circuitry and radio frequency (RF) circuitry.

[0472] 22 , the present embodiment further provides a chip 70. This chip 70 may correspond to the terminal UE 10 in the present embodiment, and the chip 70 may implement the corresponding processes implemented by the terminal UE 10 in the various methods in the present embodiment. The chip 70 includes a processor 71, which may call and execute computer programs from memory to implement the methods in the present embodiment.

[0473] Optionally, the chip 70 may further include a memory 72. The processor 71 may call and execute a computer program from the memory 72 to implement the method in the embodiment of the present application.

[0474] The memory 72 may be a separate device independent of the processor 71 , or may be integrated into the processor 71 .

[0475] Optionally, the chip 70 may further include an input interface 73. The processor 71 may control the input interface 73 to communicate with other devices or chips, and specifically, may obtain messages or data sent by other devices or chips.

[0476] Optionally, the chip 70 may further include an output interface 74. The processor 71 may control the output interface 74 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0477] Referring to Figure 23 , another embodiment of the present application provides another chip 80. This chip 80 may correspond to the gNB 20 in the embodiments of the present application and may implement the corresponding processes implemented by the gNB 20 in the various methods of the embodiments of the present application. This chip 80 includes a processor 81, which may load and execute computer programs from a memory 82 to implement the methods of the embodiments of the present application.

[0478] Optionally, the chip 80 may further include a memory 82. The processor 81 may call and execute a computer program from the memory 82 to implement the method in the embodiment of the present application.

[0479] The memory 82 may be a separate device independent of the processor 81 , or may be integrated into the processor 81 .

[0480] Those skilled in the art will appreciate that the above-mentioned embodiments are specific embodiments for implementing the present application, and that in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A wireless communication method, executed in a user terminal, characterized in that: Include: Receive configuration information used for scheduling information reporting; receiving activation information from the first transmission reception point, wherein the activation information is used to activate scheduling information reporting; receiving scheduling information from the first transmission reception point; and Report the scheduling information to at least one second transmission receiving point.

2. The wireless communication method according to claim 1, wherein: The activation information is carried in at least one of the following control signalings: radio resource control RRC, downlink control information DCI, and medium access control element MAC CE.

3. The wireless communication method according to claim 1, wherein: The symbol or time slot corresponding to the time of reporting the scheduling information and the symbol or time slot corresponding to the time of receiving the activation information are offset by at least a first time offset.

4. The wireless communication method according to claim 1 or 3, wherein: The scheduling information reporting configuration indicates at least one of the following information: the first time offset; Uplink control channel resource configuration, indicating uplink control channel resources used for scheduling information reporting; Uplink shared channel resource configuration, indicating uplink shared channel resources used for scheduling information reporting; or The amount of scheduling information reported.

5. The wireless communication method according to claim 3, wherein: The activation information includes the scheduling information reporting configuration.

6. The wireless communication method according to claim 3, wherein: The scheduling information reporting configuration is carried in radio resource control RRC information, or downlink control information DCI, or medium access control MAC control element CE.

7. The wireless communication method according to claim 1, wherein: Reporting the received scheduling information to at least one secondary transmission reception point includes: reporting at least one scheduling information received from the first transmission reception point, the at least one scheduling information including all or part of the scheduling information received within a predefined time period, and the predefined time period starts at the symbol or time slot corresponding to the moment when the first time offset ends, and the predefined time period ends at the symbol or time slot corresponding to the moment when deactivation information is received, and the deactivation information is used to deactivate scheduling information reporting.

8. The wireless communication method according to claim 1, wherein: The symbol or time slot at which the scheduling information is reported and the symbol or time slot at which the activation information is received are offset by at least a second time offset.

9. The wireless communication method according to claim 1 or 8, wherein: The symbol or time slot corresponding to the time of receiving the scheduling information is offset from the symbol or time slot corresponding to the time of reporting the scheduling information by at least a third time offset.

10. The wireless communication method according to any one of claims 1 to 9, characterized in that: The scheduling information reporting configuration associated with the activation information indicates at least one of the following information: the second time offset; the third time offset; Uplink control channel resource configuration, indicating uplink control channel resources used for scheduling information reporting; Uplink shared channel resource configuration, indicating the physical uplink shared channel resources used for scheduling information reporting; and The amount of scheduling information reported.

11. The wireless communication method according to claim 1, wherein: The method further comprises: Reporting the received scheduling information to at least one auxiliary transmission reception point includes: reporting at least one scheduling information received from the first transmission reception point, the at least one scheduling information including all or part of the scheduling information received within a predefined time period, and the predefined time period starts at the symbol or time slot corresponding to the moment when the first time offset ends, and the predefined time period ends at the symbol or time slot corresponding to the moment when deactivation information is received, and the deactivation information is used to deactivate channel state information CSI reporting.

12. The wireless communication method according to claim 1, wherein: The scheduling information reporting configuration is used to indicate uplink control channel resources, and the method further includes: Transmitting, on the uplink control channel resources, uplink shared channel resource configuration information used for reporting scheduling information to the first transmission reception point and the at least one second transmission reception point; and receiving configuration information for scheduling information reporting sent from the at least one second transmission reception point, wherein the configuration information for scheduling information reporting indicates an uplink shared channel resource allocated by the second transmission reception point; The uplink shared channel resource configuration information is used to determine the uplink shared channel resource; The scheduling information is carried on the allocated uplink shared channel resources.

13. The wireless communication method according to claim 12, wherein: The scheduling information reporting configuration includes at least one of the following information: a fourth time offset, used to represent an offset between a symbol or a time slot corresponding to a moment of receiving the activation information and a symbol or a time slot corresponding to a moment of transmitting the uplink shared channel resource configuration information; a fifth time offset, used to represent an offset between a symbol or time slot corresponding to a moment of receiving the activation information and a symbol or time slot corresponding to a moment of reporting the scheduling information; a sixth time offset, used to represent an offset between a symbol or time slot corresponding to a moment of receiving the configuration information used for reporting the scheduling information and a symbol or time slot corresponding to a moment of reporting the scheduling information; The first field is used to indicate the uplink control channel resource; The second field is used to indicate the uplink shared channel resource; and The amount of scheduling information reported.

14. The wireless communication method according to claim 4, 11 or 14, characterized in that: The amount of scheduling information reported is used to indicate at least one of the following: The same reporting amount is used for reporting downlink and uplink scheduling information; The reporting of scheduling information corresponding to different DCI formats uses the same reporting amount; The reporting of scheduling information corresponding to different DCI formats uses different reporting amounts; and Different reporting amounts are used for reporting downlink and uplink scheduling information.

15. The wireless communication method according to claim 1, wherein: Also includes: When the scheduling information SI is carried on an uplink control channel for reporting, and the uplink control information UCI overlaps with the scheduling information SI in the time domain, uplink control information UCI multiplexing is performed.

16. The wireless communication method according to claim 15, wherein: When the scheduling information SI is carried on the uplink control channel format 2 / 3 / 4 for reporting, when at least one of the following uplink control information UCI overlaps with the scheduling information SI in the time domain, the uplink control information UCI is multiplexed and carried together on the resources of the uplink control channel for transmission: scheduling request SR, HARQ-ACK, and channel state information CSI.

17. The wireless communication method according to claim 1, wherein: Also includes: When the uplink shared channel and the uplink control channel multiplex uplink control information UCI, if the UCI includes scheduling information SI, the scheduling information SI is carried on the uplink shared channel.

18. The wireless communication method according to claim 17, wherein: When the channel state information CSI carried by the uplink shared channel includes a first CSI part and a second CSI part, the first CSI part is jointly encoded with scheduling information SI, and the second CSI part is independently encoded.

19. A wireless communication method, executed in a terminal device, characterized in that: Receive configuration information used for scheduling information reporting; Receiving scheduling information from a first transmission reception point, wherein a symbol or time slot corresponding to a moment of receiving the scheduling information and a symbol or time slot corresponding to a moment of starting reporting of periodic channel state information (CSI) are offset by at least a first time offset; and reporting the scheduling information to at least one second transmission reception point.

20. The wireless communication method according to claim 19, wherein: The symbol or time slot corresponding to the time of reporting the scheduling information and the symbol or time slot corresponding to the time of receiving the scheduling information are offset by at least a second time offset.

21. The wireless communication method according to claim 20, wherein: The scheduling information is carried in downlink control information DCI.

22. The wireless communication method according to claim 19 or 20, wherein: in, The scheduling information reporting configuration indicates at least one of the following information: Uplink control channel resource configuration, indicating the uplink control channel resources used for scheduling information reporting; the first time offset; and The second time offset.

23. A wireless communication method, characterized in that: Execution on the terminal includes: Reporting capability, used to indicate support for codebook-based transmission on three antenna ports; receiving configuration information of a sounding reference signal resource set, wherein the SRS resource set includes at least one SRS resource group, wherein the SRS resource group consists of SRS resources of no more than three antenna ports; Performing SRS uplink transmission using at least one SRS resource group in the SRS resource set; and Receive SRS resource group indication information and transmit precoding matrix indicator TPMI indicated by the base station.

24. The wireless communication method according to claim 23, wherein: The SRS resource group includes one SRS resource for one antenna port and one SRS resource for two antenna ports.

25. The wireless communication method according to claim 23, wherein: The SRS resource group includes three SRS resources with one antenna port.

26. The wireless communication method according to claim 24 or 25, characterized in that: Also includes: Receiving downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS; The number of bits of the SRI is where N SRS-group The number of the SRS resource groups configured in the SRS resource set.

27. The wireless communication method according to claim 26, wherein: The TPMI is jointly encoded with the rank number.

28. The wireless communication method according to claim 23, wherein: For different SRS resources in the SRS resource set, each antenna port occupies the same number of symbols in the time domain, or occupies the same symbols.

29. A wireless communication method, characterized in that: Execution on the terminal includes: Reporting capability, used to indicate support for codebook-based transmission on three antenna ports; receiving configuration information of a sounding reference signal resource set, wherein the SRS resource set includes at least one SRS resource of four antenna ports; receiving an indication of the number of antenna ports or an antenna port indication, wherein the indication of the number of antenna ports is used to indicate the number of antenna ports used by the terminal, and the antenna port indication is used to indicate the antenna port used by the terminal; Performing SRS uplink transmission using at least one SRS resource in the SRS resource set; and The SRS resource indication information, the transmit precoding matrix indicator TPMI and the modulation and coding scheme MCS indicated by the base station are received.

30. The wireless communication method according to claim 29, wherein: The three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or downlink control information DCI.

31. The wireless communication method according to claim 30, wherein: The three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

32. The wireless communication method according to claim 30, wherein: The three antenna ports in the SRS resource are indicated as used antenna ports by a combination number, and the bit overhead of the combination number is Wherein N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set, and N s It indicates the number of antenna ports selected for use in the SRS resource.

33. The wireless communication method according to claim 29, wherein: Also includes: Receiving downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS; The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

34. The wireless communication method according to claim 33, wherein: The TPMI is jointly encoded with the rank number.

35. A wireless communication method, characterized in that: Execution on the terminal includes: Reporting capability, used to indicate support for codebook-based transmission on three antenna ports; receiving configuration information of a sounding reference signal resource set, wherein the SRS resource set includes at least one SRS resource of four antenna ports; Selecting three antenna ports from the four antenna ports as antenna ports used by the terminal; Performing SRS uplink transmission using at least one SRS resource in the SRS resource set; and The SRS resource indication information, the transmit precoding matrix indicator TPMI and the modulation and coding scheme MCS indicated by the base station are received.

36. The wireless communication method according to claim 35, wherein: Also includes: Reporting the selected antenna port information, where the antenna port information is used to indicate the antenna port used by the terminal.

37. The wireless communication method according to claim 35, wherein: In the antenna port information, the three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or uplink control information UCI.

38. The wireless communication method according to claim 37, wherein: In the antenna port information, three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

39. The wireless communication method according to claim 37, wherein: In the antenna port information, the three antenna ports in the SRS resource are indicated as used antenna ports in the form of a combination number, and the bit overhead of the combination number is Wherein N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set, and N s It indicates the number of antenna ports selected for use in the SRS resource.

40. The wireless communication method according to claim 35, wherein: Also includes: Receiving downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS; The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

41. The wireless communication method according to claim 40, wherein: The TPMI is jointly encoded with the rank number.

42. A wireless communication method, executed at a first transmission receiving point, characterized in that: Include: Send configuration information used for scheduling information reporting; Sending activation information from the first transmission receiving point to the terminal, wherein the activation information is used to activate scheduling information reporting; Sending scheduling information to the terminal from the first transmission point; and The scheduling information is used to forward to at least one second transmission receiving point.

43. The wireless communication method according to claim 42, wherein: The activation information is carried in at least one of the following control signalings: radio resource control RRC, downlink control information DCI, and medium access control element MAC CE.

44. The wireless communication method according to claim 42, wherein: The symbol or time slot corresponding to the time when the scheduling information is reported and the symbol or time slot corresponding to the time when the terminal receives the activation information are offset by at least a first time offset.

45. The wireless communication method according to claim 42 or 44, characterized in that: The scheduling information reporting configuration indicates at least one of the following information: the first time offset; Uplink control channel resource configuration, indicating uplink control channel resources used for scheduling information reporting; Uplink shared channel resource configuration, indicating uplink shared channel resources used for scheduling information reporting; or The amount of scheduling information reported.

46. ​​The wireless communication method according to claim 44, wherein: The activation information includes the scheduling information reporting configuration.

47. The wireless communication method according to claim 44, wherein: The scheduling information reporting configuration is carried in radio resource control RRC information, or downlink control information DCI, or medium access control MAC control element CE.

48. The wireless communication method according to claim 42, wherein: The symbol or time slot at which the scheduling information is reported and the symbol or time slot at which the terminal receives the activation information are offset by at least a second time offset.

49. The wireless communication method according to claim 42 or 48, wherein: The symbol or time slot corresponding to the time when the terminal receives the scheduling information is offset from the symbol or time slot corresponding to the time when the terminal reports the scheduling information by at least a third time offset.

50. The wireless communication method according to any one of claims 42 to 49, characterized in that: The scheduling information reporting configuration associated with the activation information indicates at least one of the following information: the second time offset; the third time offset; Uplink control channel resource configuration, indicating uplink control channel resources used for scheduling information reporting; Uplink shared channel resource configuration, indicating the physical uplink shared channel resources used for scheduling information reporting; and The amount of scheduling information reported.

51. The wireless communication method according to claim 42, wherein: The scheduling information reporting configuration is used to indicate uplink control channel resources, and the method further includes: Transmitting, on the uplink control channel resources, uplink shared channel resource configuration information used for reporting scheduling information to the first transmission reception point and the at least one second transmission reception point; and Sending configuration information for scheduling information reporting sent from the at least one second transmission reception point, wherein the configuration information for scheduling information reporting indicates an uplink shared channel resource allocated by the second transmission reception point; The uplink shared channel resource configuration information is used to determine the uplink shared channel resource; The scheduling information is carried on the allocated uplink shared channel resources.

52. The wireless communication method according to claim 51, wherein: The scheduling information reporting configuration includes at least one of the following information: a fourth time offset, used to represent an offset between a symbol or a time slot corresponding to a moment when the terminal receives the activation information and a symbol or a time slot corresponding to a moment when the uplink shared channel resource configuration information is transmitted; a fifth time offset, used to represent an offset between a symbol or time slot corresponding to a moment when the terminal receives the activation information and a symbol or time slot corresponding to a moment when the terminal reports the scheduling information; a sixth time offset, used to represent an offset between a symbol or time slot corresponding to a moment when the terminal receives the configuration information used for reporting the scheduling information and a symbol or time slot corresponding to a moment when the terminal reports the scheduling information; The first field is used to indicate the uplink control channel resource; The second field is used to indicate the uplink shared channel resource; and The amount of scheduling information reported.

53. The wireless communication method according to claim 4, 11 or 14, wherein: The amount of scheduling information reported is used to indicate at least one of the following: The same reporting amount is used for reporting downlink and uplink scheduling information; The reporting of scheduling information corresponding to different DCI formats uses the same reporting amount; The reporting of scheduling information corresponding to different DCI formats uses different reporting amounts; and Different reporting amounts are used for reporting downlink and uplink scheduling information.

54. The wireless communication method according to claim 42, wherein: Also includes: When the scheduling information SI is carried on an uplink control channel for reporting, and the uplink control information UCI overlaps with the scheduling information SI in the time domain, uplink control information UCI multiplexing is performed.

55. The wireless communication method according to claim 54, wherein: When the scheduling information SI is carried on the uplink control channel format 2 / 3 / 4 for reporting, when at least one of the following uplink control information UCI overlaps with the scheduling information SI in the time domain, the uplink control information UCI is multiplexed and carried together on the resources of the uplink control channel for transmission: scheduling request SR, HARQ-ACK, and channel state information CSI.

56. The wireless communication method according to claim 42, wherein: Also includes: When the uplink shared channel and the uplink control channel multiplex uplink control information UCI, if the UCI includes scheduling information SI, the scheduling information SI is carried on the uplink shared channel.

57. The wireless communication method according to claim 56, wherein: When the channel state information CSI carried by the uplink shared channel includes a first CSI part and a second CSI part, the first CSI part is jointly encoded with scheduling information SI, and the second CSI part is independently encoded.

58. A wireless communication method, executed in a first transmission receiving point, characterized in that: Sending configuration information used for scheduling information reporting; and Sending scheduling information to a terminal from a first transmission and reception point, wherein a symbol or a time slot corresponding to a moment when the terminal receives the scheduling information and a symbol or a time slot corresponding to a moment when periodic channel state information CSI starts to be reported are offset by at least a first time offset; The scheduling information is used to forward to at least one second transmission receiving point.

59. The wireless communication method according to claim 60, wherein: The symbol or time slot corresponding to the time when the scheduling information is reported and the symbol or time slot corresponding to the time when the terminal receives the scheduling information are offset by at least a second time offset.

60. The wireless communication method according to claim 59, wherein: The scheduling information is carried in downlink control information DCI.

61. The wireless communication method according to claim 60 or 59, wherein: in, The scheduling information reporting configuration indicates at least one of the following information: Uplink control channel resource configuration, indicating the uplink control channel resources used for scheduling information reporting; the first time offset; and The second time offset.

62. A wireless communication method, characterized in that: Execution on the base station includes: The capability reported by the receiving terminal is used to indicate support for codebook-based transmission of three antenna ports; Sending configuration information of a sounding reference signal resource set to the terminal, wherein the SRS resource set includes at least one SRS resource group, wherein the SRS resource group consists of SRS resources of no more than three antenna ports; receiving an SRS uplink transmission on at least one SRS resource group in the SRS resource set; and Send SRS resource group indication information and transmit precoding matrix indicator TPMI.

63. The wireless communication method according to claim 62, wherein: The SRS resource group includes one SRS resource for one antenna port and one SRS resource for two antenna ports.

64. The wireless communication method according to claim 62, wherein: The SRS resource group includes three SRS resources with one antenna port.

65. The wireless communication method according to claim 63 or 64, wherein: Also includes: Send downlink control information DCI, the DCI indicates SRS resource indicator SRI, transmit precoding matrix indicator TPMI, Modulation and coding scheme MCS; The number of bits of the SRI is where N SRS-group The number of the SRS resource groups configured in the SRS resource set.

66. The wireless communication method according to claim 65, wherein: The TPMI is jointly encoded with the rank number.

67. The wireless communication method according to claim 62, wherein: For different SRS resources in the SRS resource set, each antenna port occupies the same number of symbols in the time domain, or occupies the same symbols.

68. A wireless communication method, characterized in that: Executed on the base station, including: The capability reported by the receiving terminal is used to indicate support for codebook-based transmission of three antenna ports; Sending configuration information of a sounding reference signal resource set to the terminal, wherein the SRS resource set includes at least one SRS resource of four antenna ports; Sending an indication of the number of antenna ports or an antenna port indication, wherein the indication of the number of antenna ports is used to indicate the number of antenna ports used by the terminal, and the antenna port indication is used to indicate the antenna port used by the terminal; receiving an SRS uplink transmission on at least one SRS resource in the SRS resource set; and Send SRS resource indication information and transmit precoding matrix indicator TPMI.

69. The wireless communication method according to claim 68, wherein: The three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or downlink control information DCI.

70. The wireless communication method according to claim 69, wherein: The three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

71. The wireless communication method according to claim 69, wherein: The three antenna ports in the SRS resource are indicated as used antenna ports by a combination number, and the bit overhead of the combination number is Wherein N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set, and N s It indicates the number of antenna ports selected for use in the SRS resource.

72. The wireless communication method according to claim 68, wherein: Also includes: Sending downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS; The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

73. The wireless communication method according to claim 72, wherein: The TPMI is jointly encoded with the rank number.

74. A wireless communication method, characterized in that: Executed on the base station, including: The capability reported by the receiving terminal is used to indicate support for codebook-based transmission of three antenna ports; Sending configuration information of a sounding reference signal resource set to the terminal, wherein the SRS resource set includes at least one SRS resource of four antenna ports; receiving an SRS uplink transmission on at least one SRS resource in the SRS resource set; and The SRS resource indication information, transmit precoding matrix indicator TPMI and modulation and coding scheme MCS indicated by the sending base station.

75. The wireless communication method according to claim 74, wherein: Also includes: Receive reported antenna port information, where the antenna port information is used to indicate that three antenna ports among the four antenna ports are used as antenna ports for the terminal.

76. The wireless communication method according to claim 74, wherein: In the antenna port information, the three antenna ports in the SRS resources are indicated as used antenna ports through radio resource control RRC, medium access control element MAC CE, or uplink control information UCI.

77. The wireless communication method according to claim 76, wherein: In the antenna port information, three antenna ports in the SRS resource are indicated as used antenna ports through a bitmap, and the bit overhead of the bitmap is the number of antenna ports corresponding to the SRS resource.

78. The wireless communication method according to claim 76, wherein: In the antenna port information, the three antenna ports in the SRS resource are indicated as used antenna ports in the form of a combination number, and the bit overhead of the combination number is Wherein N represents the number of antenna ports corresponding to the SRS resources configured in the configured SRS resource set, and N s It indicates the number of antenna ports selected for use in the SRS resource.

79. The wireless communication method according to claim 74, wherein: Also includes: Sending downlink control information DCI, where the DCI indicates an SRS resource indicator SRI, a transmit precoding matrix indicator TPMI, and a modulation and coding scheme MCS; The number of bits of the SRI is where N SRS The number of the SRS resources configured in the SRS resource set.

80. The wireless communication method according to claim 79, wherein: The TPMI is jointly encoded with the rank number.

81. A wireless communication device, characterized in that include: A processor configured to call and execute a computer program stored in a memory so that a device equipped with the processor executes the method of any one of claims 1 to 80.

82. A chip, characterized in that include: A processor configured to call and execute a computer program stored in a memory so that a device equipped with the processor executes the method of any one of claims 1 to 80.

83. A computer-readable storage medium, characterized in that A computer program is stored therein, wherein the computer program enables a computer to execute the method of any one of claims 1 to 80.

84. A computer program product, characterized in that Comprising a computer program, wherein the computer program causes a computer to execute the method of any one of claims 1 to 80.

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