Wireless communication method and related device

Abstract

This application provides a wireless communication method and related apparatus. In scenarios where the transmission reliability of different TAG-related information is difficult to distinguish, the associated information of TAG1 and TAG2 is transmitted sequentially in overlapping time slots. A guard interval mechanism is introduced to insert a guard interval between two consecutive transmissions of the same TAG-related information. The guard interval is the length of time required to transmit the TAG1 and TAG2 associated information respectively, thereby ensuring that each transmission of different TAG-related information in the overlapping time slot does not overlap. This solution solves the problem of PUSCH Type-B retransmission conflicts of different TAG-related information at the symbol resource level, while achieving dual optimization of resource utilization and transmission reliability.

Description

Technical Field

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

[0002] In multi-transmission reception point (TRP) transmission, an asymmetric multi-TRP deployment architecture with a single downlink transmission reception point (sTRP) and multiple uplink transmission reception points (mTRP) can be used to enhance uplink transmission and improve communication performance.

[0003] In a multi-TRP system, due to the varying uplink propagation delays between a terminal device and different TRPs (i.e., the time it takes for a terminal device to transmit uplink signals to different TRPs may differ), a single TA configuration cannot meet the synchronization requirements of multiple TRPs. This necessitates a dual-TA configuration, in which two TA values ​​are configured for each terminal device, with different TA values ​​used to transmit uplink signals to different TRPs. However, with a dual-TA configuration, if repeated transmissions of the Physical Uplink Shared Channel (PUSCH) Type B using time division multiplexing (TDM) are performed within the same time slot, with the time domain resources associated with two different TA groups (TAGs) for the repeated transmissions, the current time domain resource scheduling mechanism may cause symbol allocation to overlap. This means that the same symbol resource may be configured to transmit information associated with different TAGs. This overlap can cause signal conflicts and negatively impact system stability and transmission efficiency. Summary of the Invention

[0004] In view of this, the present application provides a wireless communication method and related apparatus to solve at least some of the above problems. The disclosed technical solutions are as follows:

[0005] In the first aspect, the present application provides a wireless communication method, which is applied to a terminal device, and the method includes: receiving TAG configuration information sent by a network device, the TAG configuration information includes the TRP included in the first TAG and the corresponding first TA value, and the TRP included in the second TAG and the corresponding second TA value; receiving PUSCH resource information sent by the network device, the resource information includes information on the first time domain resource for transmitting the first TAG associated information and information on the second time domain resource for transmitting the second TAG associated information; after determining that there is an overlapping time slot between the first time domain resource and the second time domain resource, and determining that the reliability of the first TAG associated information and the second TAG associated information cannot be distinguished, the first TAG associated information and the second TAG associated information are transmitted in sequence within the overlapping time slot, and a protection interval is set between two consecutive transmissions of the same TAG associated information, the protection interval being greater than or equal to the time required to complete the transmission of the first TAG associated information and the second TAG associated information in sequence; after determining that the overlapping time slot transmission is completed, the first TAG associated information or the second TAG associated information is sent based on the non-overlapping time slot resource after the overlapping time slot. As can be seen, this solution transmits TAG1 and TAG2 associated information sequentially within overlapping time slots and introduces a guard interval mechanism, inserting a guard interval between two consecutive transmissions of the same TAG associated information. This guard interval is the length of time required to transmit TAG1 and TAG2 associated information respectively, ensuring that each transmission of different TAG associated information within the overlapping time slot does not overlap. At the symbol resource level, it solves the problem of conflicting retransmissions of different TAG associated information on PUSCH Type-B, while achieving dual optimization of resource utilization and transmission reliability.

[0006] In a possible implementation of the first aspect, the first TAG-associated information and the second TAG-associated information are transmitted in sequence in the overlapping time slot, and a protection interval is set between two consecutive transmissions of the same TAG-associated information, including: updating the third time domain resource for the first transmission of the first TAG-associated information in the overlapping time slot according to the information of the first time domain resource, and using the third time domain resource to send the first TAG-associated information; updating the fourth time domain resource for the first transmission of the second TAG-associated information in the overlapping time slot according to the information of the third time domain resource and the information of the second time domain resource, and using the fourth time domain resource to send the second TAG-associated information; updating the first retransmission time domain resource for the non-first retransmission of the first TAG-associated information in the overlapping time slot according to the information of the third time domain resource and the protection interval, and using the first retransmission time domain resource to send the first TAG-associated information; updating the second retransmission time domain resource for the non-first retransmission of the second TAG-associated information in the overlapping time slot according to the information of the fourth time domain resource and the protection interval, and using the second retransmission time domain resource to send the second TAG-associated information. It can be seen that this scheme updates the time domain resource positions corresponding to the first retransmission of the first TAG associated information and the second TAG associated information in the overlapping time slot, and further updates the time domain resource positions of the non-first retransmission of the first TAG associated information and the second TAG associated information in the overlapping time slot, and finally realizes the transmission of the first and second TAG associated information in sequence in the overlapping time slot, and each transmission of the first and second TAG associated information will not overlap.

[0007] In a possible implementation of the first aspect, updating, according to information of the first time domain resource, a third time domain resource for first transmitting first TAG-associated information in an overlapping time slot includes:

[0008] The starting position of the third time slot of the third time domain resource is obtained according to the following formula:

[0009]

[0010] The starting position of the third symbol of the third time domain resource is obtained according to the following formula:

[0011]

[0012] Among them, K_S_1_new represents the starting position of the third time slot, K_S_1 represents the starting position of the first time slot of the first time domain resource, S_1_new represents the starting position of the third symbol, S_1 represents the starting position of the first symbol of the first time domain resource, L_1 represents the continuous symbol length of the first time domain resource, n represents the number of retransmissions of the first TAG associated information before the overlapping time slot occurs, n≥0 and is an integer, each time slot contains 14 symbol resources, floor() represents rounding down, and mod() represents the remainder operation.

[0013] In a possible implementation of the first aspect, updating, according to information of the third time domain resource and information of the second time domain resource, a fourth time domain resource for first transmitting second TAG-associated information in an overlapping time slot includes:

[0014] A starting position of the fourth time slot of the fourth time domain resource is the same as a starting position of the third time slot of the third time domain resource;

[0015] The starting position of the fourth symbol of the fourth time domain resource is obtained according to the following formula:

[0016] S_2_new=S_1_new+L_1+GP_1

[0017] Wherein, S_2_new represents the starting position of the fourth symbol, GP_1 represents the buffer position after the retransmission of the first TAG associated information is completed, and GP_1 ≥ 0 and is an integer.

[0018] In a possible implementation manner of the first aspect, updating, in sequence according to information of the third time domain resource and the guard interval, a first retransmission time domain resource for non-first retransmission of first TAG-associated information in an overlapping time slot includes:

[0019] The time slot starting position of the first retransmission time domain resource is obtained according to the following formula:

[0020]

[0021] GI=L_1+L_2+GP_1+GP_2

[0022] The symbol starting position of the first retransmission time domain resource is obtained according to the following formula:

[0023]

[0024] Among them, K_S_1_new,m represents the time slot starting position corresponding to the mth retransmission of the first TAG-associated information in the overlapping time slot, K_S_1_new represents the time slot starting position of the first transmission of the first TAG-associated information in the overlapping time slot, S_1_new represents the symbol starting position of the first transmission of the first TAG-associated information in the overlapping time slot, m represents the number of retransmissions of the first TAG-associated information in the overlapping time slot, m≥0 and is an integer, wherein m=0 represents the first retransmission; GI represents the guard interval, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, GP_1 represents the buffer position after the retransmission of the first TAG-associated information is completed, GP_2 represents the buffer position after the retransmission of the second TAG-associated information is completed, GP_1, GP_2 ≥0 and are integers; each time slot includes 14 symbols.

[0025] In a possible implementation manner of the first aspect, updating, in sequence according to information of the fourth time domain resource and the guard interval, the second retransmission time domain resource for non-first retransmission of the second TAG-associated information in the overlapping time slot includes:

[0026] The time slot starting position of the second retransmission time domain resource is obtained according to the following formula:

[0027]

[0028] GI=L_1+L_2+GP_1+GP_2

[0029] The symbol starting position of the second retransmission time domain resource is obtained according to the following formula:

[0030]

[0031] Among them, K_S_2_new,m represents the time slot starting position corresponding to the mth retransmission of the second TAG associated information in the overlapping time slot, K_S_2_new represents the time slot starting position of the first transmission of the second TAG associated information in the overlapping time slot, S_2_new represents the symbol starting position of the first transmission of the second TAG associated information in the overlapping time slot, m represents the number of retransmissions of the second TAG associated information in the overlapping time slot, m≥0 and is an integer, wherein m=0 represents the first retransmission; GI represents the guard interval, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, GP_1 represents the buffer position after the retransmission of the first TAG associated information is completed, GP_2 represents the buffer position after the retransmission of the second TAG associated information is completed, GP_1, GP_2≥0 and are integers; each time slot includes 14 symbols.

[0032] In a possible implementation of the first aspect, determining that the reliability of the first tag association information and the second tag association information cannot be distinguished includes:

[0033] In the case where L_1>L_th and L_2>L_th, or L_1≤L_th and L_2≤L_th, it is determined that the reliability of the first TAG associated information and the second TAG associated information cannot be distinguished;

[0034] Wherein, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

[0035] In a possible implementation of the first aspect, the method further includes: when it is determined that the first time domain resource and the second time domain resource have overlapping time slots, and when it is determined that the transmission reliability of the first TAG-associated information is higher than the transmission reliability of the second TAG-associated information, transmitting the first TAG-associated information in the overlapping time slot, and discarding the second TAG-associated information in a portion of the second time domain resource that overlaps with a valid retransmission symbol of the first TAG-associated information. In this way, when it is determined that the transmission reliability of the first TAG-associated information is higher, the first TAG-associated information is preferentially ensured to be effectively transmitted in the overlapping time slot, thereby improving the reliability of transmitting the first TAG-associated information.

[0036] In a possible implementation of the first aspect, determining that the transmission reliability of the first TAG-associated information is higher than the transmission reliability of the second TAG-associated information includes: when L_1>L_th and L_2≤L_th, determining that the transmission reliability of the first TAG-associated information is higher than the transmission reliability of the second TAG-associated information; wherein L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

[0037] In a possible implementation manner of the first aspect, the valid retransmission symbols of the first TAG-associated information include actual repeated symbols and invalid symbols in the first time domain resources.

[0038] In a possible implementation of the first aspect, the method further includes: when it is determined that the first time domain resource and the second time domain resource have overlapping time slots, and when it is determined that the transmission reliability of the second TAG-associated information is higher than the transmission reliability of the first TAG-associated information, transmitting the second TAG-associated information in the overlapping time slot, and discarding a portion of the first TAG-associated information that overlaps with a valid retransmitted symbol of the second TAG-associated information in the overlapping time slot. In this way, when it is determined that the reliability of the second TAG-associated information is higher, priority is given to ensuring the effective transmission of the second TAG-associated information in the overlapping time slot, thereby improving the reliability of sending the second TAG-associated information.

[0039] In a possible implementation of the first aspect, determining that the transmission reliability of the second TAG-associated information is higher than the transmission reliability of the first TAG-associated information includes: when L_2>L_th and L_1≤L_th, determining that the transmission reliability of the second TAG-associated information is higher than the transmission reliability of the first TAG-associated information; wherein L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

[0040] In a possible implementation manner of the first aspect, the valid retransmission symbols of the second TAG-associated information include actual repeated symbols and invalid symbols in the second time domain resources.

[0041] In a possible implementation of the first aspect, receiving TAG configuration information sent by a network device includes: receiving RRC signaling sent by the network device, the RRC signaling including TAG configuration information; the TAG configuration information includes a mapping relationship between a first TAG and an included TRP, and a mapping relationship between a second TAG and an included TRP; receiving a MACCE sent by the network device, the MAC CE including a new TA value corresponding to the first TAG and / or a new TA value corresponding to the second TAG.

[0042] In the second aspect, the present application also provides a wireless communication method, which is applied to a network device, and the method includes: sending TAG configuration information to a terminal device, the TAG configuration information includes a first TAG and a corresponding first TA value, and a second TAG and a corresponding second TA value; sending resource information for repeated transmission of PUSCH Type-B to the terminal device, the resource information includes information on the first time domain resources for transmitting the first TAG associated information and information on the second time domain resources for transmitting the second TAG associated information, so that the terminal device determines that the first time domain resources and the second time domain resources overlap, and cannot distinguish the reliability of the first TAG associated information and the second TAG associated information, and then transmits the first TAG associated information and the second TAG associated information in sequence within the overlapping time slot, and sets a protection interval between two consecutive transmissions of the same TAG associated information, and after determining that the overlapping time slot transmission is completed, sends the first TAG associated information or the second TAG associated information based on the non-overlapping time slot resources after the overlapping time slot; wherein the protection interval is greater than or equal to the time required to complete the transmission of the TAG associated information and the second TAG associated information in sequence.

[0043] In a possible implementation manner of the second aspect, sending TAG configuration information to the terminal device includes: sending RRC signaling to the terminal device, where the RRC signaling includes the TAG configuration information.

[0044] In a third aspect, the present application also provides an electronic device, which includes: one or more processors, a memory, and a touch screen; the memory is used to store program code; and the processor is used to run the program code, so that the electronic device implements a wireless communication method as any possible implementation method of the first aspect or the second aspect.

[0045] In a fourth aspect, the present application also provides a computer-readable storage medium having instructions stored thereon. When the instructions are executed on an electronic device, the electronic device executes the wireless communication method as described in any one of the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

[0047] Figure 2 This is a schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0048] Figure 3 Schematic diagram of an asymmetric downlink sTRP / uplink mTRP deployment architecture provided in an embodiment of the present application;

[0049] Figure 4 This is a flow chart of a wireless communication method provided by an embodiment of the present application;

[0050] Figure 5 This is a schematic diagram of an embodiment of the present application in which TAG1-related information transmission resources and TAG2-related information transmission resources overlap;

[0051] Figure 6 is a flowchart of another wireless communication method provided by an embodiment of the present application;

[0052] Figure 7 yes Figure 6 Schematic diagram of the corresponding sending conflict avoidance strategy;

[0053] Figure 8 This is a flowchart of another wireless communication method provided by an embodiment of the present application;

[0054] Figure 9 yes Figure 8 Schematic diagram of the corresponding sending conflict avoidance strategy;

[0055] Figure 10 is a flowchart of another wireless communication method provided by an embodiment of the present application;

[0056] Figure 11 yes Figure 10 Schematic diagram of the corresponding sending conflict avoidance strategy;

[0057] Figure 12 This is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0058] Figure 13 This is a structural diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0059] The terms "first", "second" and "third" in the specification, claims and drawings of this application are used to distinguish different objects rather than to limit a specific order.

[0060] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0061] For ease of understanding, the concepts involved in this application are first explained:

[0062] Timing advance (TA) is the amount of time in advance that the base station requires the terminal device to send a signal. It is used to compensate for signal propagation delay so that the uplink signals of all terminal devices can reach the base station synchronously.

[0063] A timing advance group (TAG) groups multiple TRPs together to share the same TA value, simplifying time synchronization management, reducing signaling overhead, and improving network efficiency. In the dual-TA mechanism, a user equipment (UE) supports two TAGs, each associated with a TAG ID. Each TAG has a corresponding TA value, which is obtained through a timing advance command (TAC) sent by the network.

[0064] PUSCH Type-B retransmission: A flexible symbol-level scheduling method that allows data transmission to be retransmitted across time slots starting from any symbol position with a fixed symbol length. This is suitable for low-latency and high-reliability scenarios. PUSCH Type-B retransmission reduces latency and improves signal reliability by repeatedly transmitting the same data packet. This mechanism is primarily used in uplink shared channels, especially in scenarios requiring high reliability, such as the transmission of control channel information.

[0065] The technical solutions provided in the embodiments of the present application can be applied to communication systems, which may include but are not limited to the following systems, such as: second-generation (2G) communication systems, third-generation (3G) communication systems, long-term evolution (LTE) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, fifth-generation (5G) systems or new radio (NR), 5.5G systems or sixth-generation (6G) systems and future mobile communication systems, vehicle to other devices (V2X); V2X may include vehicle to network (V2N), vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to pedestrian (V2P), etc., long-term evolution-vehicle (LTE-V), Internet of Vehicles, machine type communication (MTC), etc. communication (MTC), internet of things (IOT), ambient internet of things (AIOT), long term evolution-machine (LTE-M), machine to machine (M2M), etc.

[0066] The communication system is applicable to scenarios including terrestrial cellular communication, non-terrestrial network (NTN), satellite communication, high altitude platform station (HAPS) communication, vehicle-to-everything (V2X) communication, integrated access and backhaul (IAB) communication, and reconfigurable intelligent surface (RIS) communication.

[0067] In 5G communication systems, communication between network devices and terminal devices includes uplink and downlink communications. Uplink communication refers to signal transmission from terminal devices to network devices via uplink physical channels. Downlink communication refers to signal transmission from network devices to other devices via downlink physical channels. Signals in uplink and downlink communications can carry control information, service data, reference signals, sounding signals, and more. At the physical layer, uplink physical channels include the random access channel (PRACH), the physical uplink control channel (PUCCH), and the physical uplink shared channel (PUSCH). Downlink physical channels include the physical broadcast channel (PBCH), the physical downlink control channel (PDCCH), and the physical downlink shared channel (PDSCH).

[0068] Configuration and pre-configuration: Configuration refers to the network device sending certain parameter configuration information or parameter values ​​to the terminal via messages or signaling, so that the terminal device can determine the communication parameters or transmission resources based on these values ​​or information. Pre-configuration is similar to configuration and can be parameter information or parameter values ​​pre-negotiated between the network and the terminal device, parameter information or parameter values ​​used by the network device or terminal device as specified by the standard protocol, or parameter information or parameter values ​​pre-stored in the network device or terminal device. This application does not limit this. In addition, these values ​​and parameters can be changed or updated.

[0069] In this application, "indication" may include explicit indication and implicit indication. When describing that a certain indication information is used to indicate A, it can be understood that the indication information carries A, explicitly indicates A, or implicitly indicates A.

[0070] The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC. And, unless otherwise specified, the ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects.

[0071] For example, Figure 1 FIG. 1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present application. Figure 1 As shown, the communication system includes a network device 101 and a terminal device 102 .

[0072] The terminal device 102 can communicate with one or more core networks or the Internet via a radio access network (RAN). The terminal device can be a mobile terminal device, such as a mobile phone (also known as a "cellular" phone, mobile phone), a computer, and a data card. For example, it can be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges voice and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablet computers, computers with wireless transceiver capabilities, and other devices. A wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point (AP), a remote terminal, an access terminal, a user terminal, a user agent, a subscriber station (SS), a customer premises equipment (CPE), a terminal, a user equipment (UE), a mobile terminal (MT), etc. A terminal device may also be a wearable device or a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved communication system.

[0073] The network device 101 is a device on the network side used to provide network communication functions, and may also be referred to as a network element. The network device may typically be a base station (including functional units of a base station, or a combination of functional units of a base station) or a core network unit, wherein the core network unit may be a functional unit in the core network, including but not limited to an access and mobility management function (AMF) unit or a session management function (SMF) unit.

[0074] In an embodiment of the present application, a base station may be any device with wireless transceiver functions, including but not limited to: an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in long term evolution (LTE), a base station (gNodeB or gNB) or a transmission point (transmission receiving point / transmission reception point, TRP) in new radio (NR), a base station of subsequent evolution of 3GPP, an access node in a Wi-Fi system, a wireless relay node, a wireless backhaul node, etc. The base station may be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. The base station may include one or more co-sited or non-co-sited TRPs. The base station may also be a wireless controller, a centralized unit (CU), and / or a distributed unit (DU) in a cloud radio access network (CRAN) scenario. The base station may communicate with a terminal device, or communicate with the terminal device through a relay station. The terminal device can communicate with multiple base stations supporting different technologies. For example, the terminal device can communicate with a base station supporting the LTE network, and can also communicate with a base station supporting the 5G network. It can also establish dual connections with a base station supporting the LTE network and a base station supporting the 5G network.

[0075] In practical applications, when network equipment functions as access network equipment, multiple network devices can collaborate to assist terminal devices in achieving wireless access, with different network devices each implementing portions of a base station's functionality. For example, a network device can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be separate or included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0076] In different systems, the CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meanings. For example, in the ORAN system, the CU may also be called an O-CU (Open CU), the DU may also be called an O-DU, the CU-CP may also be called an O-CU-CP, the CU-UP may also be called an O-CU-UP, and the RU may also be called an O-RU. Any of the CU (or CU-CP, CU-UP), DU, and RU in this application may be implemented as a software module, a hardware module, or a combination of software and hardware modules. The CU (or CU-CP and CU-UP), DU, and RU can implement different protocol layer functions.

[0077] Figure 2 This is a schematic diagram of the structure of an access network device. As an implementation example, Figure 2 As shown, the access network device may include at least one CU and at least one DU. This design can be referred to as CU-DU separation. A CU can be connected to one or more DUs. The CU and DU can be divided based on the protocol layers of the wireless network: for example, the functions of the PDCP layer and above (such as the RRC layer and SDAP layer) are located in the CU, while the functions of the protocol layers below the PDCP layer (such as the RLC layer, media access control (MAC) layer, and PHY layer) are located in the DU. Another example is that the functions of the protocol layers above the PDCP layer are located in the CU, while the functions of the protocol layers below the PDCP layer are located in the DU, without limitation. When a CU includes a CU-CP and a CU-UP, the CU-CP implements the control plane functions of the CU, and the CU-UP implements the user plane functions of the CU. For example, when the CU is configured to implement the functions of the PDCP layer, RRC layer, and SDAP layer, the CU-CP implements the RRC layer functions and the control plane functions of the PDCP layer, and the CU-UP implements the SDAP layer functions and the user plane functions of the PDCP layer. This application does not limit the names of the CU and DU. The above division of the processing functions of CU and DU according to the protocol layer is only an example, and they can also be divided in other ways.

[0078] The CU can be connected to the core network. Optionally, the CU can have some of the functions of the core network.

[0079] Furthermore, some functions of DU can be separated and set up. Figure 2As shown, these functions can be implemented by a radio unit (RU). The RU can have radio frequency functions. This application does not limit the name of the RU. The DU and RU can be split or separated at the PHY layer. For example, the DU can implement high-level functions in the PHY layer, and the RU can implement low-level functions in the PHY layer, or implement these low-level functions and radio frequency functions. High-level functions in the PHY layer include functions closer to the MAC layer, and low-level functions in the PHY layer include functions closer to the radio frequency. For example, high-level functions in the PHY layer include one or more of the following: forward error correction (FEC) encoding / decoding, scrambling, or modulation / demodulation. Low-level functions in the PHY layer include one or more of the following: fast Fourier transform (FFT) / inverse fast Fourier transform (IFFT), beamforming, or physical random access channel (PRACH) extraction and filtering. The RU can communicate radio frequency signals with terminal devices over the air interface. The PHY layer code precoding function can be located in the DU or the RU. The DU and RU can be split in various ways, without limitation. An interface exists between the DU and RU. For example, depending on the split method, the interface between the DU and RU can be a common public radio interface (CPRI) or an enhanced common public radio interface (eCPRI).

[0080] Optionally, any one of the above-mentioned CU, CU-CP, CU-UP, DU and RU can be a software module, a hardware structure, or a software module plus a hardware structure, without limitation. The existence forms of different entities can be the same or different. For example, CU, CU-CP, CU-UP and DU are software modules, and RU is a hardware structure. For the sake of brevity, all possible combinations are not listed here one by one. These modules and their execution methods are also within the scope of protection of the embodiments of the present application. For example, when the method of the embodiment of the present application is executed by an access network device, it can be specifically executed by at least one of CU, CU-CP, CU-UP, DU, or RU.

[0081] Figure 3A schematic diagram shows a multi-TRP system architecture with an asymmetric downlink sTRP / uplink mTRP. The system includes an anchor TRP and multiple uplink TRPs. This system uses a single TRP for downlink and multiple TRPs for uplink, significantly improving uplink communication performance.

[0082] For example, the anchor-TRP and UL-TRP1 through UL-TRP3 in this example can correspond to different base stations. For example, the anchor-TRP is a macro base station, and the UL-TRP is a micro base station (or micro node). Macro base stations have a larger coverage area and are typically used to provide wide-area coverage. Micro nodes have a smaller coverage area and are typically used to provide localized coverage, such as in high-density user areas like commercial areas and indoor locations. Due to the limited downlink coverage of micro nodes, downlink reception on micro nodes can be reduced or even disabled to reduce network energy consumption. Therefore, micro nodes can serve as uplink-only TRPs.

[0083] The anchor-TRP in this example can communicate with the terminal devices (UE1, UE2, and UE3 in the figure) for both uplink and downlink, while the UL-TRP (UL-TRP1 to UL-TRP3 in the figure) can only receive uplink signals sent by the terminal devices. That is, the UL-TRP is an uplink-only TRP, that is, the downlink TRP in the system is the anchor-TRP, and the uplink TRP includes the anchor-TRP and UL-TRP1 to UL-TRP3. In other words, the terminal device can receive downlink signals from the anchor-TRP and send uplink signals to the anchor-TRP or UL-TRP. In addition, the anchor-TRP and UL-TRP can communicate with each other.

[0084] In this example, UE1 can receive downlink information from anchor-TRP and send uplink information to UL-TRP1 and UL-TRP2. In this scenario, UL-TRP1 and UL-TRP2 may belong to the same TAG or different TAGs. Whether they belong to the same TAG depends on whether the transmission delay of the uplink signal sent by the UE to the two TRPs is the same. If they are the same, the two TRPs belong to the same TAG. If they are different, the two TRPs belong to different TAGs. UE2 can receive downlink information from anchor-TRP and send uplink information to UL-TRP3; UE3 can receive downlink information from anchor-TRP and send uplink information to anchor-TRP and UL-TRP3. In this scenario, anchor-TRP and UL-TRP3 belong to different TAGs, and different TAGs correspond to different TA values.

[0085] In related technologies, under a dual-TA configuration mechanism, time domain resources of information associated with different TAGs may overlap, causing a conflict in transmitted signals.

[0086] In order to solve the above problems, an embodiment of the present application provides a wireless communication method, which provides a time slot resource conflict avoidance solution based on PUSCH Type-B repeated transmission. When the time slot resources used by the terminal device to send uplink information associated with different TAGs overlap, different conflict avoidance strategies can be adopted according to different resource configuration methods to adapt to complex network environments and changing transmission requirements.

[0087] See Figure 4 , shows a flow chart of a wireless communication method provided by an embodiment of the present application, which can be applied to Figure 1 In the scenario of multi-TRP deployment architecture shown in Figure 4 As shown, the method may include the following steps:

[0088] S101, UE performs a random access procedure.

[0089] S102: The network device sends a timing advance command TAC to the UE.

[0090] This step is the process of the network device configuring the initial TA value for the UE. Specifically, during the random access process, the UE sends a random access request to the network device (such as a base station). The random access request message contains a preamble sequence. After the base station (i.e., TRP) detects the preamble sequence, it measures the time difference between the preamble transmission time and the base station reception time, thereby calculating the initial TA value. Among them, each TRP (i.e., anchor-TRP and each UL-TRP) calculates the corresponding TA value respectively, and the UL-TRP sends the obtained TA value to the anchor-TRP through collaboration between TRPs. For example, the UL-TRP transmits the measured TA report to the anchor-TRP through an interface between TRPs (such as an Xn interface) or a centralized architecture using a reporting mechanism.

[0091] Furthermore, the anchor-TRP may deliver a TAC to the UE via a random access response (RAR) message. The TAC includes the TA value corresponding to TAG1 (referred to as the TA1 value) and the TA value corresponding to TAG2 (referred to as the TA2 value). For example, the TAC includes the ID of TAG1 and the corresponding TA1 value, as well as the ID of TAG2 and the corresponding TA2 value.

[0092] S103: The network device configures TAG1 and TAG2 for the UE and sends TAG configuration information to the UE.

[0093] For example, a network device (such as an anchor-TRP) may formally configure a TAG for the UE through a Connection Reconfiguration message of the radio resource control (RRC) layer, and send the TAG configuration information to the UE through a physical downlink shared channel (PDSCH) so that the UE can perform subsequent communications based on the TAG configuration information.

[0094] The anchor-TRP evaluates the corresponding TA value based on the timestamp difference of each UL-TRP receiving the UE uplink signal, and divides UL-TRPs with approximately the same TA value (for example, when the difference between two TA values ​​is less than the TA threshold, the two TA values ​​are considered to be approximately the same) into the same TAG.

[0095] For example, Figure 3 In the multi-TRP system shown, for UE1, the anchor-TRP is a TAG (such as TAG1), and UL-TRP1 and UL-TRP2 are a TAG (such as TAG2). For UE2, the anchor-TRP is TAG1, and UL-TRP3 is TAG2. For UE3, there is only one TAG.

[0096] The TAG configuration information may include the TAG ID and the mapping relationship between the TAG and each TRP, and may also include the activation status of the TRP, etc.

[0097] In addition, during the communication process, the base station (such as the anchor-TRP) can also dynamically adjust the TA value corresponding to the TAG configured for the UE through MAC Control Elements (CE) (i.e., MAC CE) to adapt to changes in channel conditions. For example, the anchor-TRP can send information containing the TAG ID and the corresponding TA value to the UE through the MAC CE, thereby dynamically adjusting the TA value corresponding to the TAG configured for the UE.

[0098] S104: The network device sends allocated PUSCH Type-B repeated transmission resource information to the UE.

[0099] Based on channel conditions and service requirements, the network device allocates PUSCH Type-B repeated transmission resources associated with two tags to the UE, that is, allocates PUSCH Type-B repeated transmission resources for the UE to send uplink information to the TRP belonging to TAG1 and the TRP belonging to TAG2 respectively. In this application, the uplink information sent to the TRP belonging to TAG1 can be referred to as TAG1-associated information. Similarly, the uplink information sent to the TRP belonging to TAG2 can be referred to as TAG2-associated information.

[0100] In an exemplary embodiment, resource information may include the starting time domain resource location (e.g., the slot start location and symbol start location) and the consecutive symbol length specified for each tag-associated information. For example, resource information corresponding to tag 1 includes: slot start location K_S_1, symbol start location S_1, and consecutive symbol length L_1; resource information corresponding to tag 2 includes: slot start location K_S_2, symbol start location S_2, and consecutive symbol length L_2.

[0101] The continuous symbol length here refers to the nominal repetition symbol length, where the nominal repetition may include actual repetition symbols, invalid symbols (similar to control symbols), and reusable discarded symbols.

[0102] S105 , after determining that the time domain resources of the TAG1 and TAG2 association information overlap, the UE adopts different conflict avoidance strategies according to different resource configurations.

[0103] After receiving the resource information of PUSCH Type-B repeated transmission corresponding to the association information of TAG1 and TAG2, the UE can calculate whether the time domain resources corresponding to TAG1 and TAG2 have overlapping time slots according to the starting resource position and continuous symbol length corresponding to each TAG. Figure 5 As shown, the transmission resources of TAG1 associated information allocated by the network device to the UE are time slots 1 to 8, and the transmission resources of TAG2 associated information are time slots 5 to 12, among which time slots 5 to 8 overlap, that is, time slots 5 to 8 are both transmission resources of TAG1 associated information and transmission resources of TAG2 associated information.

[0104] When it is determined that the time domain resources corresponding to TAG1 and TAG2 have overlapping time slots, a corresponding conflict avoidance strategy is determined according to different resource configurations.

[0105] For PUSCH Type-B repeated transmissions, when the actual repetition (Actual Repetition) transmission symbol length in its resource is 1, the Actual Repetition symbol is ignored. When the consecutive symbol length is too short, the Actual Repetition symbol length of 1 will frequently occur. In this case, the repeated transmission is considered unreliable and the resource utilization is low. That is, the reliability of the repeated transmission can be determined by the consecutive symbol length of the PUSCH Type-B repeated transmission resource.

[0106] In one exemplary embodiment, the present invention sets a consecutive symbol length threshold, L_th. When the consecutive symbol length of a PUSCH Type-B retransmission resource exceeds L_th, the retransmission is determined to be reliable. When the consecutive symbol length of a PUSCH Type-B retransmission resource is not greater than L_th, the retransmission is determined to be unreliable and resource utilization is low. L_th can be a positive integer greater than 1. This application uses L_th = 3 as an example for illustration.

[0107] This application provides the following three conflict avoidance strategies based on whether repeated transmission of TAG1 and TAG2 association information is reliable:

[0108] (1) If L_1>L_th and L_2≤L_th, it is determined that the repeated transmission of TAG1-related information is more reliable. In this scenario, priority is given to ensuring the effective transmission of TAG1-related information, and discarding the part of TAG2-related information that overlaps with the valid retransmission symbols of TAG1-related information to reduce resource waste and interference.

[0109] (2) If L_1≤L_th and L_2>L_th, it is determined that the retransmission of TAG2-related information is more reliable. In this scenario, priority is given to ensuring the effective transmission of TAG2-related information, and the part of TAG1-related information that overlaps with the valid retransmission symbols of TAG2-related information is discarded.

[0110] (3) If the relationship between L_1, L_2, and L_th cannot determine which repeated transmission is more reliable, for example, L_1>L_th and L_2>L_th, or L_1≤L_th and L_2≤L_th, in this scenario, the information associated with TAG1 and TAG2 is transmitted sequentially in the overlapping time slot, and a guard interval is inserted to avoid transmission conflicts, thereby ensuring that both sets of data can be fully transmitted. This strategy is suitable for scenarios where it is necessary to ensure that both sets of data can be effectively transmitted.

[0111] For TAG1-related information, the guard interval is the time interval between two consecutive retransmissions of TAG1-related information. Similarly, for TAG2-related information, the guard interval is the time interval between two consecutive retransmissions of TAG2-related information. The guard interval is the total time required to complete a single transmission of TAG1-related information and a single transmission of TAG2-related information.

[0112] In the wireless communication method provided by this embodiment, in the downlink sTRP / uplink mTRP scenario, the network device can configure two TA groups, TAG1 and TAG2, for the UE. The TA values ​​corresponding to the two TAGs are different, thereby ensuring that the uplink signals sent by the UE to different TRPs can be received synchronously. When PUSCH Type-B repeated transmission is adopted under the dual-TA mechanism, when the UE determines that the time domain resources corresponding to the TAG1 and TAG2 associated information have overlapping time slots, different conflict avoidance strategies are adopted according to different resource configuration methods. For example, when it is determined that the retransmission of one of the TAG1 and TAG2 associated information is more reliable, priority is given to ensuring the effective transmission of the more reliable retransmission information, and the information associated with the other TAG is discarded; when it is impossible to determine which of the TAG1 and TAG2 associated information is more reliable, the TAG1 associated information and the TAG2 associated information are retransmitted in sequence in the overlapping time slot to avoid transmission conflicts. It can be seen that the adoption of this solution can effectively avoid transmission conflicts under the dual-TA mechanism, improve the reliability of PUSCH Type-B retransmission, and improve resource utilization.

[0113] See Figure 6 , shows a flowchart of another wireless communication method provided by an embodiment of the present application, which is applicable to scenarios where TAG1 associated information retransmission is more reliable, such as Figure 6 As shown, the method may include the following steps:

[0114] S201: UE performs a random access procedure.

[0115] S202, Anchor-TRP sends a TAC to the UE.

[0116] S203, Anchor-TRP sends TAG configuration information to the UE.

[0117] The TAG configuration information includes the configuration information of TAG1 and TAG2, that is, each TAG and the TRP it contains.

[0118] S204, Anchor-TRP sends resource information of PUSCH Type-B repeated transmission to the UE.

[0119] The resource information may include the starting position of the transmission resource corresponding to the TAG1 and TAG2 association information (such as the time slot starting positions K_S_1 and K_S_2, the symbol starting positions S_1 and S_2), and the continuous symbol lengths L_1 and L_2.

[0120] The implementation process of S201 to S204 in this embodiment is similar to Figure 4 S101 to S104 in the illustrated embodiment are the same and will not be described again here.

[0121] S205 , after determining that the transmission resources of the TAG1 and TAG2 associated information have overlapping time slots, the UE determines the retransmission reliability of the TAG1 and TAG2 associated information based on the continuous symbol lengths of the TAG1 and TAG2 associated resources.

[0122] The UE determines the reliability of retransmission of TAG1 and TAG2 associated information by comparing the magnitude relationship between L_1, L_2 and L_th. In this embodiment, L_1>L_th, L_2≤L_th, where L_th can take a value of 3.

[0123] L_2≤L_th indicates that the Actual Repetition symbol length of 1 in the resources associated with TAG2 will frequently occur, and retransmission in this scenario is unreliable. However, L_1>L_th indicates that retransmission of information associated with TAG1 is more reliable.

[0124] S206 , the UE normally sends the TAG1 associated information based on the resources corresponding to the TAG1 associated information, and simultaneously discards the portion of the transmission resources of the TAG2 associated information that overlaps with the valid retransmission symbol resources of the TAG1 associated information.

[0125] The effective retransmission symbol resources of the TAG1 associated information include Actual Repetition symbols and invalid symbols, that is, the information required to be transmitted by discarding the transmission resources in the TAG2 associated information that overlap with the Actual Repetition symbols and invalid symbols of the TAG1 associated information transmission resources.

[0126] For example, Figure 7 As shown, time slots 5 to 8 in the transmission resources of TAG1 associated information overlap with the transmission resources of TAG2 associated information. When it is determined that the retransmission of TAG1 associated information is more reliable, the information required to be sent in the overlapping part of the Actual Repetition symbol and the invalid symbol in the transmission resources corresponding to TAG1 in the transmission resources of TAG2 associated information is discarded.

[0127] S207, after the UE determines that the overlapping timeslot transmission is completed, it sends TAG2 association information to the UL-TRP normally.

[0128] The UE calculates the end position of the overlapping time slot based on the resource information associated with TAG1 and TAG2. After the overlapping time slot transmission ends, it uses the resources allocated to the UE for transmitting TAG2 associated information to send TAG2 associated information to the TRP of TAG2 (i.e., UL-TRP in this embodiment).

[0129] See Figure 8 , shows a flowchart of another wireless communication method according to an embodiment of the present application. This embodiment is applicable to scenarios where TAG2 associated information retransmission is more reliable, such as Figure 8 As shown, the method may include the following steps:

[0130] S301: UE performs a random access procedure.

[0131] S302, Anchor-TRP sends a TAC to the UE.

[0132] S303, Anchor-TRP sends TAG configuration information to the UE.

[0133] S304, Anchor-TRP sends resource information of PUSCH Type-B repeated transmission to the UE.

[0134] The resource information may include the starting position of the transmission resource corresponding to the TAG1 and TAG2 association information (such as the time slot starting positions K_S_1 and K_S_2, the symbol starting positions S_1 and S_2), and the continuous symbol lengths L_1 and L_2.

[0135] The implementation process of S301 to S304 in this embodiment is similar to Figure 4 S101 to S104 in the illustrated embodiment are the same and will not be described again here.

[0136] S305 , after determining that the transmission resources of the TAG1 and TAG2 associated information have overlapping time slots, the UE determines the retransmission reliability of the TAG1 and TAG2 associated information based on the continuous symbol lengths of the TAG1 and TAG2 associated resources.

[0137] In this embodiment, L_1≤L_th and L_2>L_th, which determines that the retransmission of TAG2 associated information is more reliable.

[0138] S306 , the UE uses the time domain resources of the TAG2 associated information to normally send the TAG2 associated information, and discards the information transmitted by the symbols in the TAG1 associated information that overlap with the valid retransmission symbol resources of the TAG2 associated information.

[0139] Valid retransmission symbols for TAG2-related information include Actual Repetition symbols and invalid symbols. In scenarios where TAG2-related information transmission is more reliable, priority is given to ensuring the valid transmission of TAG2-related information, and information transmitted in symbol resources in TAG1-related information that overlap with Actual Repetition symbols and invalid symbols in the transmission resources of TAG2-related information is discarded.

[0140] For example, Figure 9 As shown, time slots 5 to 8 in the transmission resources of TAG1 associated information overlap with the transmission resources of TAG2 associated information. In the scenario where the transmission of TAG2 associated information is more reliable, some symbol resources in the transmission resources of TAG1 associated information that overlap with the valid retransmission symbol resources of TAG1 associated information are discarded.

[0141] S307, after the UE determines that the overlapping time slot transmission is completed, it sends TAG1 association information to the TRP of TAG1.

[0142] The UE calculates the end position of the overlapping time slot based on the resource information associated with TAG1 and TAG2. After the overlapping time slot transmission ends, it uses the resources allocated to the UE for transmitting TAG1 associated information to send TAG1 associated information to the TRP of TAG1 (i.e., Anchor-TRP in this embodiment).

[0143] See Figure 10 , shows a flow chart of another wireless communication method according to an embodiment of the present application. This embodiment is applicable to scenarios where the reliability of retransmission of TAG1 and TAG2 associated information is uncertain, or scenarios where the reliability requirement is high. Figure 10 As shown, the method may include the following steps:

[0144] S401: UE performs a random access procedure.

[0145] S402, Anchor-TRP sends a TAC to the UE.

[0146] S403, Anchor-TRP sends TAG configuration information to the UE.

[0147] The TAG configuration information includes configuration information of TAG1 and configuration information of TAG2, wherein TAG1 includes Anchor-TRP and TAG2 includes UL-TRP.

[0148] S404, Anchor-TRP sends resource information of PUSCH Type-B repeated transmission to the UE.

[0149] The implementation process of S401 to S404 in this embodiment is similar to Figure 4S101 to S104 in the illustrated embodiment are the same and will not be described again here.

[0150] S405 , after the UE determines that the transmission resources of the TAG1 and TAG2 associated information have overlapping time slots, it is unable to determine a TAG with more reliable transmission.

[0151] For example, if L_1>L_th and L_2>L_th, or if L_1≤L_th and L_2≤L_th, it is impossible to determine which transmission of TAG1 associated information and TAG2 associated information is more reliable.

[0152] S406: The UE updates the starting time domain resource position for the first retransmission of the TAG1 associated information in the overlapping time slot.

[0153] In the scenario where it is not possible to determine which TAG-related information is more reliable, a collision avoidance strategy (3) can be adopted, that is, retransmitting TAG1 and TAG2-related information in sequence in overlapping time slots, and setting a protection interval to ensure that TAG1 and TAG2-related information do not conflict.

[0154] When retransmitting TAG1 and TAG2 associated information in overlapping time slots, it is necessary to re-determine the starting resource location for the first transmission of TAG1 and TAG associated information in the overlapping time slot. For example, in the overlapping time slot, TAG1 associated information can be transmitted first, followed by TAG2 associated information; of course, in the overlapping time slot, TAG2 associated information can also be transmitted first, followed by TAG1 associated information.

[0155] This embodiment is explained by taking the example of transmitting TAG1 associated information first and then transmitting TAG2 associated information in overlapping time slots. In this scenario, it is necessary to first determine the starting resource position of TAG1 associated information in the overlapping time slot, including the new time slot starting position K_S_1_new and the new symbol starting position S_1_new.

[0156] Exemplarily, the updating formula for the time slot starting position of the TAG1 associated information transmission resource is as follows:

[0157] (1)

[0158] K_S_1_new represents the time slot start position corresponding to the first transmission of TAG1-related information in the overlapping time slot, K_S_1 represents the original time slot start position corresponding to the TAG1-related information, floor() represents rounding down, S_1 represents the original symbol start position corresponding to the TAG1-related information, L_1 represents the continuous symbol length of the TAG1-related information transmission resource, each Orthogonal Frequency Division Multiplexing (OFDM) time slot contains 14 symbols, n represents the number of times the TAG1-related information is last retransmitted before the time slot overlap occurs, and n = 0, 1, 2, etc.

[0159] The above formula 1 indicates that the new time slot starting position is the next time slot after the number of time slots required to retransmit the TAG1 associated information n times is postponed from the original time slot starting position.

[0160] The update formula for the new symbol starting position of the TAG1 associated information transmission resource is as follows:

[0161] (2)

[0162] Where S_1_new represents the symbol starting position corresponding to the first transmission of TAG1-related information in an overlapping time slot, S_1 represents the original symbol starting position of the TAG1-related information, L_1 represents the continuous symbol length of the TAG1-related information transmission resource, and n represents the number of TAG1-related information retransmissions before the time slot overlap occurs, with n = 0, 1, 2, etc. Each OFDM time slot contains 14 symbols. mod() represents the remainder operation. In this example, it calculates the remainder after dividing [S_1 + (n + 1) (L_1)] by 14.

[0163] The above formula 2 indicates that the symbol starting position of the first transmission of TAG1 associated information in the overlapping time slot is the remainder after the total symbol length after transmitting TAG1 associated information n times starting from the original symbol starting position S_1 is divided by the number of symbols contained in a time slot. Because the value of n starts from 0, after n transmissions, symbol resources with a length of (n+1) consecutive symbols are actually utilized, that is, (n+1)(L_1) symbol resources.

[0164] S407, the UE uses the time domain resources determined based on K_S_1_new, S_1_new and L_1 to send TAG1 associated information to the Anchor-TRP, and discards the TAG2 associated information corresponding to this part of the symbol resources.

[0165] S408: The UE updates the starting position of the symbol for firstly transmitting TAG2 associated information in the overlapping time slot.

[0166] The time slot starting position of the first transmission of TAG2 associated information in the overlapping time slot is the same as the time slot starting position K_S_1_new of the first transmission of TAG1 associated information, that is, K_S_2_new=K_S_1_new. It is only necessary to determine the new symbol starting position of the TAG2 associated information.

[0167] The updating formula for the symbol starting position of the first transmission of TAG2 associated information in the overlapping time slot is as follows:

[0168] S_2_new=S_1_new+L_1+GP_1 (3)

[0169] Among them, S_2_new represents the symbol starting position of the first transmission of TAG2 associated information in the overlapping time slot, S_1_new represents the symbol starting position of the first transmission of TAG1 associated information in the overlapping time slot, L_1 represents the continuous symbol length of the resource corresponding to the TAG1 associated information, GP_1 represents the buffer bit reserved at the end of the retransmission of TAG1 associated information, and GP_1 ≥ 0 symbols.

[0170] S409, the UE uses the symbol resources determined based on K_S_2_new, S_2_new and L_2 to send TAG2 association information to the UL-TRP, and at the same time discards the TAG1 association information corresponding to this part of the symbol resources.

[0171] S410, the UE sequentially updates the starting resource position of the mth retransmission of TAG1 associated information in the overlapping time slot.

[0172] For example, the time slot starting position K_S_1_new,m of the mth retransmission of the TAG1 associated information in the overlapping time slot may be updated according to the following formula:

[0173] (4)

[0174] GI=L_1+L_2+GP_1+GP_2 (5)

[0175] Where GI represents the guard interval, which is the time interval between two consecutive retransmissions of TAG1-related information. GP_2 represents the buffer bits reserved at the end of retransmission of TAG2-related information. GP_2 is ≥ 0 symbols, and m = 0, 1, 2, etc. When m = 0, it indicates the first retransmission of TAG1-related information in the overlapping time slot.

[0176] For example, the symbol starting position S_1_new,m of the mth retransmission of the TAG1 associated information in the overlapping time slot may be updated according to the following formula:

[0177] (6)

[0178] S411, the UE uses the symbol resources determined based on the starting resource position of the mth retransmission of the TAG1 association information to send the TAG1 association information to the Anchor-TRP, and discards the TAG2 association information corresponding to this part of the symbol resources.

[0179] S412, the UE sequentially updates the starting resource position of the mth retransmission of the TAG2 associated information in the overlapping time slot.

[0180] For example, the time slot starting position K_S_2_new,m of the mth retransmission of the TAG2 associated information in the overlapping time slot may be updated according to the following formula:

[0181] (7)

[0182] For example, the symbol starting position S_2_new,m corresponding to the mth retransmission of TAG2 associated information in the overlapping time slot may be updated according to the following formula:

[0183] (8)

[0184] S413, the UE uses the symbol resources determined based on the starting resource position of the mth retransmission of the TAG2 association information to send the TAG2 association information to the UL-TRP, and at the same time discards the TAG1 association information corresponding to this part of the symbol resources.

[0185] S414: After the UE determines that the overlapping timeslot transmission is completed, it sends the TAG2 associated information normally.

[0186] The following combination Figure 11 The schematic diagram of PUSCH Type-B repeated transmission resources shown in FIG. 1 illustrates this embodiment:

[0187] like Figure 11 As shown, the PUSCH Type-B repetitive transmission resources allocated for TAG1-associated information are time slots 1 to 4, and the PUSCH Type-B repetitive transmission resources allocated for TAG2-associated information are time slots 3 to 6. Each time slot contains 14 symbols. Time slots 3 and 4 are overlapping time slots, i.e., overlapping time slots.

[0188] The time slot starting position of the resource corresponding to the TAG1 association information is K_S_1, that is, time slot 1, and the symbol starting position S_1 is the first symbol of time slot 1 (wherein, the symbols of the time slot are numbered starting from 0, so the first symbol is the symbol with i=0 in the time slot, and i is the symbol number), and the continuous symbol length L_1=4.

[0189] The time slot starting position of the resource corresponding to the TAG2 association information is K_S_2, that is, time slot 3, the symbol starting position S_2 is the second symbol of time slot 3 (the symbol with i=1 in time slot 3), and the continuous symbol length L_1=6.

[0190] For example, if TAG1-related information is transmitted first and then TAG2-related information is transmitted in overlapping time slots (i.e., time slots 3 and 4), before the transmission resources of TAG1-related information overlap with the transmission resources of TAG2-related information (i.e., time slots 1 and 2), the total number of transmissions of TAG1-related information is 2×14 / 4=7. The first retransmission is recorded as n 0, so after 7 retransmissions, n=6. That is, the resource-related information of TAG1-related information K_S_1=1, S_1=1, L_1=4, n=6,

[0191] According to Formula 1, the time slot starting position for the first retransmission of TAG1-associated information in an overlapping time slot is K_S_1_new = 1+1+1 = 3, which is slot 3. According to Formula 2, the symbol starting position for the first retransmission of TAG1-associated information in an overlapping time slot is S_1_new = mod ((1+7×4), 14) = 1. This means that the starting resource position for the first retransmission of TAG1-associated information in an overlapping time slot is the first symbol position in slot 3.

[0192] It has been calculated that K_S_1_new=3, S_1_new=1, and it is known that L_1=4, GP_1=1, then according to Formula 3, the symbol starting position corresponding to the first retransmission of TAG2-related information in the overlapping time slot is S_2_new=S_1_new+L_1+GP_1=1+4+1=6. The time slot starting position corresponding to the first transmission of TAG2-related information in the overlapping time slot is the same as K_S_1_new, that is, K_S_2_new=K_S_1_new=3, that is, the starting resource position of the first retransmission of TAG2-related information in the overlapping time slot is the 6th symbol position of time slot 3.

[0193] It is known that L_1=4, L_2=6, GP_1=1, GP_2=1, therefore, the guard interval GI=4+6+1+1=12.

[0194] like Figure 11 As shown in the diagram of actual transmission resources, in the overlapping time slot 3, the first four symbols in time slot 3 are used to transmit tag 1-related information, the fifth symbol is used as a buffer, and symbols 6 to 11 are used to transmit tag 2-related information, with the 12th symbol also used as a buffer. This completes the first retransmission of tag 1 and tag 2-related information in the overlapping time slot. Next, tag 1-related information is retransmitted, and after the retransmission of tag 1-related information is completed, tag 2-related information is retransmitted. This cycle of transmitting tag 1 and tag 2-related information repeats until the end of the overlapping time slot.

[0195] When TAG1-related information is transmitted for the second time in an overlapping time slot, m=1. Formulas 4 and 5 yield the corresponding time slot starting position, K_S_1_new,1=3+0=3, which is slot 3. Formula 6 yields the corresponding symbol starting position, S_1_new,1=13, meaning the starting position for the second transmission of TAG1-related information in the overlapping time slot is the 13th symbol resource in slot 3. Similarly, when TAG2-related information is retransmitted for the second time in an overlapping time slot, m=1, and the initial transmission of TAG2-related information yields K_S_2_new=3 and S_2_new=6. Therefore, Formula 7 yields K_S_2_new,1=4 and S_2_new,1=4, meaning the starting position for the second transmission of TAG2-related information in the overlapping time slot is the 4th symbol resource in slot 4.

[0196] Similarly, when TAG1-related information is transmitted for the third time in the overlapping time slot, m = 2. According to Formulas 4 and 5, the time slot starting position for this transmission, K_S_1_new,2, is 4, and according to Formula 6, the symbol starting position, S_1_new,2, is 11. Therefore, the 11th to 14th symbols of time slot 4 are used for the third transmission of TAG1-related information.

[0197] like Figure 11 As shown, the overlapping time slots are time slots 3 and 4. After the TAG1 associated information is transmitted for the third time, the transmission of the overlapping time slot phase ends, and the TAG2 associated information is transmitted normally in the subsequent time slots 5 and 6.

[0198] The wireless communication method provided in this embodiment, in a scenario where the transmission reliability of different TAG-associated information is difficult to distinguish, sequentially transmits the associated information of TAG1 and TAG2 in overlapping time slots, and introduces a protection interval mechanism to insert a protection interval between two consecutive transmissions of the same TAG-associated information. The protection interval is the length of time required to transmit the TAG1 and TAG2 associated information respectively, thereby ensuring that each transmission of different TAG-associated information in the overlapping time slot does not overlap. This solution solves the problem of PUSCH Type-B retransmission conflicts of different TAG-associated information at the symbol resource level, while achieving dual optimization of resource utilization and transmission reliability. In addition, this solution allows different TAG-associated information to be simultaneously and repeatedly transmitted on different symbol resources in the overlapping time slot portion, further enhancing signal reliability.

[0199] Figure 12This is a structural diagram of a communication device provided in an embodiment of the present application. The communication device can be a terminal device, a device in a terminal device (such as a chip), or a device that can be used in combination with a terminal device; or the communication device can be a network device, a device in a network device (such as a chip), or a device that can be used in combination with a network device.

[0200] like Figure 12 As shown, the communication device may include a transceiver module 201 and a processing module 202. Specifically, the processing module 202 is used to process data, which may be data received by the transceiver module 201, and the processed data may also be sent by the transceiver module 201.

[0201] The processing module 202 is used to execute the data processing function of the terminal device or network device in the above-mentioned communication method embodiment. For other possible implementations of the communication device, please refer to the relevant description of the terminal device or network device functions mentioned above, which will not be repeated here.

[0202] Figure 13 This is a structural diagram of a terminal device provided in an embodiment of the present application.

[0203] like Figure 13 As shown, the terminal device may include a processor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a first antenna, a second antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module, a button, a motor, an indicator, a camera, a display, and a subscriber identification module (SIM) card interface. The sensor module may include a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, and the like.

[0204] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the terminal device. In other embodiments, the terminal device may include more or fewer components than shown, or may combine or separate certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0205] A processor may include one or more processing units, for example, an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors.

[0206] The wireless communication function of the terminal device can be implemented through the first antenna, the second antenna, the mobile communication module, the wireless communication module, the modem processor and the baseband processor.

[0207] The first antenna and the second antenna are used to transmit and receive electromagnetic wave signals. Each antenna in the terminal device can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, the first antenna can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antenna can be used in conjunction with a tuning switch.

[0208] The mobile communication module can provide wireless communication solutions including 2G / 3G / 4G / 5G / 6G applied in terminal devices.

[0209] The modem processor may include a modulator and a demodulator. The modulator is used to modulate the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After being processed by the baseband processor, the low-frequency baseband signal is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker, a receiver, etc.) or displays an image or video through a display screen. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor and be set in the same device as the mobile communication module or other functional modules.

[0210] In an embodiment of the present application, the baseband processor may execute the process steps performed on the terminal device side in the above-mentioned wireless communication method embodiment.

[0211] The wireless communication module can provide wireless communication solutions applied to terminal devices, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc.

[0212] In some embodiments, the first antenna of the terminal device is coupled to the mobile communication module, and the second antenna is coupled to the wireless communication module, so that the terminal device can communicate with the network and other devices through wireless communication technology.

[0213] If the integrated unit is implemented as a software functional unit and sold or used as a standalone product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment, or the portion that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes instructions for causing a computer device (such as a personal computer, server, or network device) or processor to execute all or part of the steps of the method described in each embodiment. The aforementioned storage medium includes various media capable of storing program code, such as flash memory, mobile hard disks, read-only memory, random access memory, magnetic disks, or optical disks.

[0214] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: Applied to a terminal device, the method includes: Receiving TAG configuration information sent by a network device, the TAG configuration information including a TRP included in a first TAG and a corresponding first TA value, and a TRP included in a second TAG and a corresponding second TA value; receiving PUSCH resource information sent by a network device, where the resource information includes information about a first time domain resource for transmitting first TAG associated information and information about a second time domain resource for transmitting second TAG associated information; After determining that the first time domain resource and the second time domain resource have overlapping time slots, and determining that the reliability of the first TAG associated information and the second TAG associated information cannot be distinguished, sequentially transmitting the first TAG associated information and the second TAG associated information within the overlapping time slot, and setting a guard interval between two consecutive transmissions of the same TAG associated information, where the guard interval is greater than or equal to a time required to sequentially complete the transmission of the first TAG associated information and the second TAG associated information; After determining that the overlapping time slot transmission is completed, the first TAG association information or the second TAG association information is sent based on a non-overlapping time slot resource after the overlapping time slot.

2. The method according to claim 1, characterized in that The sequentially transmitting the first TAG association information and the second TAG association information in the overlapping time slot, and setting a protection interval between two consecutive transmissions of the same TAG association information, includes: Update the third time domain resource for first transmitting the first TAG associated information in the overlapping time slot according to the information of the first time domain resource, and use the third time domain resource to send the first TAG associated information; updating, according to the information of the third time domain resource and the information of the second time domain resource, a fourth time domain resource for first transmitting the second TAG associated information in the overlapping time slot, and sending the second TAG associated information by using the fourth time domain resource; Update, in sequence, the first retransmission time domain resource for retransmitting the first TAG associated information in the overlapping time slot that is not the first time according to the information of the third time domain resource and the guard interval, and send the first TAG associated information by using the first retransmission time domain resource; The second retransmission time domain resources for non-first retransmission of the second TAG associated information in the overlapping time slot are updated in sequence according to the information of the fourth time domain resources and the protection interval, and the second TAG associated information is sent using the second retransmission time domain resources.

3. The method according to claim 2, characterized in that The updating, according to the information of the first time domain resource, of the third time domain resource for firstly transmitting the first TAG associated information in the overlapping time slot includes: The starting position of the third time slot of the third time domain resource is obtained according to the following formula: The starting position of the third symbol of the third time domain resource is obtained according to the following formula: Among them, K_S_1_new represents the starting position of the third time slot, K_S_1 represents the starting position of the first time slot of the first time domain resource, S_1_new represents the starting position of the third symbol, S_1 represents the starting position of the first symbol of the first time domain resource, L_1 represents the continuous symbol length of the first time domain resource, n represents the number of retransmissions of the first TAG associated information before the overlapping time slot occurs, n≥0 and is an integer, each time slot contains 14 symbol resources, floor() represents rounding down, and mod() represents remainder operation.

4. The method according to claim 3, characterized in that The updating, according to the information of the third time domain resource and the information of the second time domain resource, of the fourth time domain resource for firstly transmitting the second TAG associated information in the overlapping time slot includes: The starting position of the fourth time slot of the fourth time domain resource is the same as the starting position of the third time slot of the third time domain resource; The starting position of the fourth symbol of the fourth time domain resource is obtained according to the following formula: S_2_new=S_1_new+L_1+GP_1 Wherein, S_2_new represents the starting position of the fourth symbol, GP_1 represents the buffer position after the retransmission of the first TAG associated information is completed, and GP_1≥0 and is an integer.

5. The method according to claim 3, characterized in that The updating, in sequence according to the information of the third time domain resource and the guard interval, of the first retransmission time domain resource for a non-first retransmission of the first TAG-associated information in the overlapping time slot includes: The time slot starting position of the first retransmission time domain resource is obtained according to the following formula: GI=L_1+L_2+GP_1+GP_2 The symbol starting position of the first retransmission time domain resource is obtained according to the following formula: Among them, K_S_1_new,m represents the time slot starting position corresponding to the mth retransmission of the first TAG associated information in the overlapping time slot, K_S_1_new represents the time slot starting position of the first transmission of the first TAG associated information in the overlapping time slot, S_1_new represents the symbol starting position of the first transmission of the first TAG associated information in the overlapping time slot, m represents the number of times the first TAG associated information is retransmitted in the overlapping time slot, m≥0 and is an integer, wherein m=0 represents the first retransmission; GI represents the guard interval, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, GP_1 represents the buffer position after the retransmission of the first TAG associated information is completed, GP_2 represents the buffer position after the retransmission of the second TAG associated information is completed, GP_1, GP_2≥0 and are integers; each time slot includes 14 symbols.

6. The method according to claim 3, characterized in that The updating, in sequence according to the information of the fourth time domain resource and the guard interval, of the second retransmission time domain resource for a non-first retransmission of the second TAG-associated information in the overlapping time slot includes: The time slot starting position of the second retransmission time domain resource is obtained according to the following formula: GI=L_1+L_2+GP_1+GP_2 The symbol starting position of the second retransmission time domain resource is obtained according to the following formula: Among them, K_S_2_new,m represents the time slot starting position corresponding to the mth retransmission of the second TAG associated information in the overlapping time slot, K_S_2_new represents the time slot starting position of the first transmission of the second TAG associated information in the overlapping time slot, S_2_new represents the symbol starting position of the first transmission of the second TAG associated information in the overlapping time slot, m represents the number of times the second TAG associated information is retransmitted in the overlapping time slot, m≥0 and is an integer, wherein m=0 represents the first retransmission; GI represents the guard interval, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, GP_1 represents the buffer position after the retransmission of the first TAG associated information is completed, GP_2 represents the buffer position after the retransmission of the second TAG associated information is completed, GP_1, GP_2≥0 and are integers; each time slot includes 14 symbols.

7. The method according to any one of claims 1 to 6, characterized in that The determining that the reliability of the first TAG association information and the second TAG association information cannot be distinguished includes: In a case where L_1>L_th and L_2>L_th, or L_1≤L_th and L_2≤L_th, determining that the reliability of the first TAG associated information and the second TAG associated information cannot be distinguished; Among them, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

8. The method according to any one of claims 1 to 6, characterized in that The method further comprises: When it is determined that there is an overlapping time slot between the first time domain resource and the second time domain resource, and when it is determined that the transmission reliability of the first TAG associated information is higher than the transmission reliability of the second TAG associated information, the first TAG associated information is transmitted within the overlapping time slot, and the second TAG associated information of the second time domain resource that overlaps with the valid retransmission symbol of the first TAG associated information is discarded.

9. The method according to claim 8, characterized in that The determining that the transmission reliability of the first TAG associated information is higher than the transmission reliability of the second TAG associated information includes: In the case where L_1>L_th and L_2≤L_th, determining that the transmission reliability of the first TAG associated information is higher than the transmission reliability of the second TAG associated information; Among them, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

10. The method according to claim 8, characterized in that The valid retransmission symbols of the first TAG associated information include actual repeated symbols and invalid symbols in the first time domain resources.

11. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: When it is determined that there is an overlapping time slot between the first time domain resource and the second time domain resource, and when it is determined that the transmission reliability of the second TAG associated information is higher than the transmission reliability of the first TAG associated information, the second TAG associated information is transmitted in the overlapping time slot, and the first TAG associated information in the overlapping time slot that overlaps with the valid retransmission symbols of the second TAG associated information is discarded.

12. The method according to claim 11, characterized in that The determining that the transmission reliability of the second TAG associated information is higher than the transmission reliability of the first TAG associated information includes: In the case where L_2>L_th and L_1≤L_th, determining that the transmission reliability of the second TAG associated information is higher than the transmission reliability of the first TAG associated information; Among them, L_1 represents the continuous symbol length of the first time domain resource, L_2 represents the continuous symbol length of the second time domain resource, and L_th represents the continuous symbol length threshold.

13. The method according to claim 11, characterized in that The valid retransmission symbols of the second TAG associated information include actual repeated symbols and invalid symbols in the second time domain resources.

14. The method according to claim 1, wherein The receiving TAG configuration information sent by the network device includes: Receiving RRC signaling sent by the network device, the RRC signaling including configuration information of the TAG; the TAG configuration information including a mapping relationship between a first TAG and a TRP included therein, and a mapping relationship between a second TAG and a TRP included therein; Receive a MAC CE sent by the network device, where the MAC CE includes a new TA value corresponding to the first TAG and / or a new TA value corresponding to the second TAG.

15. A wireless communication method, characterized in that: Applied to a network device, the method includes: Sending TAG configuration information to the terminal device, where the TAG configuration information includes the TRP included in the first TAG and the corresponding first TA value, and the TRP included in the second TAG and the corresponding second TA value; Send resource information for repeated transmission of PUSCH Type-B to the terminal device, where the resource information includes information of a first time domain resource for transmitting first TAG associated information and information of a second time domain resource for transmitting second TAG associated information, so that the terminal device determines that there is an overlapping time slot between the first time domain resource and the second time domain resource and that the reliability of the first TAG associated information and the second TAG associated information cannot be distinguished. Then, the terminal device sequentially transmits the first TAG associated information and the second TAG associated information within the overlapping time slot, sets a protection interval between two consecutive transmissions of the same TAG associated information, and after determining that the overlapping time slot transmission ends, sends the first TAG associated information or the second TAG associated information based on a non-overlapping time slot resource after the overlapping time slot; The protection interval is greater than or equal to the time required to sequentially complete the transmission of the TAG associated information and the second TAG associated information.

16. The method according to claim 15, characterized in that The sending of TAG configuration information to the terminal device includes: Send RRC signaling to the terminal device, where the RRC signaling includes the TAG configuration information.

17. An electronic device, characterized in that: The electronic device includes: one or more processors, a memory and a touch screen; the memory is used to store program code; the processor is used to run the program code, so that the electronic device implements the wireless communication method according to any one of claims 1 to 16.

18. A computer-readable storage medium, characterized in that Instructions are stored thereon, and when the instructions are executed on an electronic device, the electronic device executes the wireless communication method according to any one of claims 1 to 16.

Images