Wireless communication method, apparatus and device

Abstract

The present application belongs to the field of communications. Disclosed are a wireless communication method, apparatus and device. The wireless communication method in the embodiments of the present application comprises: when a first uplink transmission fails, a terminal executing a first operation. In the embodiments of the present application, in an enhanced duplex mode, when a first uplink transmission fails, a terminal can execute a first operation, such that the reliability of uplink transmission can be improved, the delay of uplink transmission is reduced, and the problem of the type of an uplink transmission resource initially selected in the enhanced duplex mode being poor can be solved.

Description

Wireless communication method, device and equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 28, 2023, with application number 202311844812.X and invention name “Wireless Communication Methods, Devices and Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of communications, and more specifically, to a wireless communication method, apparatus, and device. Background Art

[0004] In cellular networks, half-duplex mode and full-duplex mode are introduced to more flexibly utilize limited spectrum resources. In half-duplex mode, only uplink or downlink transmission can be performed at the same time, but not both. In full-duplex mode, uplink and downlink transmission can be performed simultaneously at different frequency domain locations at the same time.

[0005] For networks supporting enhanced duplex mode, the network may configure different uplink resource types, such as uplink resources in uplink time units and uplink resources in uplink subbands. During random access or when a terminal is transmitting data in idle or inactive states, the resource type initially selected by the terminal may not be optimal, resulting in a failure to receive the corresponding signal on the network side. In this case, optimizing resource selection to improve data transmission reliability is a problem that needs to be addressed. Summary of the Invention

[0006] The embodiments of the present application provide a wireless communication method, apparatus, and device. In enhanced duplex mode, after uplink transmission fails, the resource type of uplink transmission can be switched or the uplink resource can be reselected, thereby improving the reliability of uplink transmission and reducing the latency of uplink transmission, and solving the problem of poor uplink transmission resource type initially selected in enhanced duplex mode.

[0007] In a first aspect, a wireless communication method is provided, comprising:

[0008] When the first uplink transmission fails, the terminal performs a first operation;

[0009] The first operation includes at least one of the following:

[0010] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0011] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0012] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0013] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0014] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0015] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0016] In a second aspect, a wireless communication method is provided, including:

[0017] The network side device sends first information to the terminal, wherein the first information is used by the terminal to perform a first operation when the first uplink transmission fails;

[0018] The first operation includes at least one of the following:

[0019] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0020] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0021] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0022] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0023] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0024] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0025] According to a third aspect, a wireless communication device is provided, comprising: a processing unit;

[0026] In the event that the first uplink transmission fails, the processing unit is configured to perform a first operation;

[0027] The first operation includes at least one of the following:

[0028] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0029] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0030] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0031] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0032] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0033] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0034] According to a fourth aspect, a wireless communication device is provided, including:

[0035] a transceiver unit, configured to send first information to a terminal, wherein the first information is used by the terminal to perform a first operation when a first uplink transmission fails;

[0036] The first operation includes at least one of the following:

[0037] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0038] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0039] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0040] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0041] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0042] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0043] In a fifth aspect, a terminal is provided, comprising a transceiver, a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0044] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface;

[0045] In the case where the first uplink transmission fails, the processor is configured to perform a first operation;

[0046] The first operation includes at least one of the following:

[0047] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0048] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0049] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0050] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0051] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0052] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0053] In the seventh aspect, a network side device is provided, which includes a transceiver, a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0054] In an eighth aspect, a network-side device is provided, including a processor and a communication interface;

[0055] The communication interface is used to send first information to the terminal, wherein the first information is used by the terminal to perform a first operation when the first uplink transmission fails;

[0056] The first operation includes at least one of the following:

[0057] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0058] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0059] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0060] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0061] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0062] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0063] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0064] In the tenth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0065] In the eleventh aspect, a chip is provided, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method as described in the first aspect, or to implement the method as described in the second aspect.

[0066] In the twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the wireless communication method as described in the first aspect or the second aspect.

[0067] In an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and can solve the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

[0069] FIG2 is a schematic diagram of a full-duplex system provided by the present application;

[0070] FIG3 is a schematic diagram of another full-duplex system provided by the present application;

[0071] FIG4 is a schematic diagram of a gNB full-duplex and UE full-duplex provided in this application;

[0072] FIG5 is a schematic diagram of full-duplex and guard interval (GB) provided by the present application;

[0073] FIG6 is a schematic diagram of an SSB to RO mapping provided by the present application;

[0074] FIG7 is a schematic diagram of another SSB to RO mapping provided by the present application;

[0075] FIG8 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application;

[0076] FIG9 is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application;

[0077] FIG10 is a schematic block diagram of a wireless communication device according to an embodiment of the present application;

[0078] FIG11 is a schematic block diagram of another wireless communication device provided according to an embodiment of the present application;

[0079] FIG12 is a schematic block diagram of a communication device provided according to an embodiment of the present application;

[0080] FIG13 is a schematic diagram of the hardware structure of a terminal provided according to an embodiment of the present application;

[0081] FIG14 is a schematic block diagram of a network-side device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0082] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0083] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0084] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0085] It is worth noting that the technology described in the embodiments of the present application is not limited to the Internet of Things (IoT) system, but can also be used in other wireless communication systems, such as Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Bluetooth systems, or other systems. In the embodiments of the present application, the terms "system" and "network" are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied to systems other than NR systems, such as 6G (6 th Generation, 6G) communication system.

[0086] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.

[0087] The network side device 12 may include an access network device or a core network device.

[0088] Access network equipment may also be referred to as radio access network (RAN) equipment, radio access network functions, or radio access network units. Access network equipment may include base stations, wireless local area network (WLAN) access points (APs), or wireless fidelity (WiFi) nodes. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0089] Among them, the core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (MME), access mobility management function (AMF), session management function (SMF), user plane function (UPF), policy control function (PCF), policy and charging rules function unit (PCRF), edge application service discovery function (EASDF), unified data management (UDM), unified data repository (UDR), home user server (HSS), centralized network configuration (CNC), network storage function (NRF), network exposure function (NEF), local NEF (L-NEF), binding support function (BSF), application function ( Function, AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0090] To facilitate a better understanding of the embodiments of the present application, the enhanced duplex mode related to the present application is described.

[0091] In 5G mobile communication systems, full-duplex technology has been enhanced to accommodate diverse scenarios and service requirements. Key 5G scenarios include enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), and massive machine-type communication (mMTC). These scenarios place high demands on the system for reliability, low latency, high bandwidth, and wide coverage.

[0092] In NR, configuring full-duplex operation can significantly improve the latency and coverage performance of time division duplex (TDD) systems. For example, subband non-overlapping full duplex reduces self-interference due to the non-overlapping uplink and downlink subbands, thus reducing transmission latency and enhancing coverage.

[0093] For a downlink time slot (DL slot) (configured by TDD uplink and downlink common configuration (TDD-UL-DL-ConfigurationCommon) or TDD uplink and downlink dedicated configuration (TDD-UL-DL-ConfigurationDedicated)), the network configures the downlink bandwidth part (BWP) for the UE, such as time slot 1 in Figure 2.

[0094] For an uplink (UL) timeslot (configured by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated), the network configures a UL BWP for the UE, such as timeslot 4 in FIG3 .

[0095] For a downlink timeslot (DL slot) (configured by TDD-UL-DL-ConfigurationCommon or TDD-UL-DL-ConfigurationDedicated), in a full duplex scenario, as shown in Figure 2, there are the following cases:

[0096] Case 1: Configure DL BWP, such as slot 1;

[0097] Case 2: Configure DL BWP and uplink sub-band (UL sub-band, UL SB), such as slot 2.

[0098] For an uplink timeslot (UL slot), in a full duplex scenario, as shown in Figure 3, there are the following cases:

[0099] Case 3: Configure UL BWP, such as slot 4;

[0100] Case 4: Configure UL BWP and downlink sub-band (DL sub-band, DL SB), such as slot 5.

[0101] For sub-band full duplex (SBFD) operation, one SBFD sub-band consists of one resource block (RB) or a set of consecutive RBs with the same transmission direction.

[0102] The time unit (e.g., time slot or symbol) in which the gNB operates using SBFD may be referred to as an SBFD time unit.

[0103] An exemplary duplex mode is: full-duplex on the network side, where uplink and downlink transmissions can occur simultaneously at different frequency domain locations at the same time. To prevent interference between uplink and downlink, a guard band (Guard Band) can be reserved between the frequency domain locations corresponding to different transmission directions (corresponding to duplex subbands); half-duplex on the terminal side, consistent with TDD, where only uplink or downlink transmissions can occur at the same time, not both. It is understood that in this duplex mode, uplink and downlink transmissions on the network side can only be directed to different terminals at the same time.

[0104] Another exemplary duplex mode is: both the terminal side and the network side are full-duplex, as shown in Figure 4, that is, both the terminal side and the network side work in duplex mode. Specifically, for the terminal side and the network side, at the same time, UL transmission and DL transmission can be carried out simultaneously at different frequency domain positions.

[0105] For full-duplex operation at the UE side, a larger guard band (GB) (larger than the GB required for full-duplex (FD) operation at the base station) may be required to suppress self-interference, as shown in FIG5 .

[0106] For a communication device, simultaneous UL and DL transmissions can cause self-interference. To ensure transmission in the interfered direction, the communication device needs to have self-interference cancellation capabilities, such as reserving a guard band between the receive and transmit bands. However, this reduces UE throughput.

[0107] In 5G and future 6G systems, both base stations and terminals may adopt full-duplex mode.

[0108] To facilitate a better understanding of the embodiments of the present application, the random access process related to the present application is described.

[0109] The random access procedure may be a contention-based random access procedure or a non-contention-based random access procedure. The random access procedure may be a four-step random access procedure (also known as a Type-1 random access procedure) or a two-step random access procedure (also known as a Type-2 random access procedure).

[0110] In four-step random access (4-step RACH), the UE first sends message 1 (Msg1) to the network, which contains a preamble. After the network detects the preamble, it sends message 2 (Msg2) or a random access response (RAR) message, which contains the preamble number detected by the network and the uplink radio resources allocated to the UE for sending message 3 (Msg3). After receiving Msg2, the UE confirms that at least one of the preamble numbers carried in Msg2 matches the number of the preamble it sent. Then, based on the resources indicated by the RAR, it sends Msg3 containing contention resolution information. After receiving Msg3, the network sends message 4 (Msg4) containing contention resolution information. Upon receiving Msg4, the UE confirms that the resolution information is consistent with the contention resolution information sent in Msg3, thus completing four-step random access.

[0111] The network includes uplink grant (UL grant) information in the RAR to indicate the scheduling information of the Msg3 Physical Uplink Shared Channel (PUSCH), and includes information such as the Random Access Preamble ID (RAPID), the Temporary Cell Radio Network Temporary Identity (TC-RNTI), and the Timing Advance (TA). If the network does not receive the Msg3 PUSCH, it can schedule the retransmission of the Msg3 PUSCH in the Physical Downlink Control Channel (PDCCH) scrambled by the TC-RNTI.

[0112] For the contention-based random access process, different UEs randomly select preambles for transmission. In this way, different UEs may select the same preamble to send on the same time-frequency radio resources (RACH Occasion (RO) resources). This situation can be understood as a UE preamble conflict. In this case, different UEs will receive the same RAR. At this time, different UEs will transmit Msg3 PUSCH according to the scheduling information in the RAR UL grant. The network decodes the PUSCH (including contention resolution information) sent by the UE on the Msg3 PUSCH scheduling resources, so the network will include the contention resolution information received in Msg3 in Msg4. If the contention resolution information in Msg4 received by the UE matches the contention resolution information sent by the UE in Msg3 PUSCH, the UE considers that the contention resolution is successful. If they do not match, the contention resolution is considered unsuccessful.

[0113] If the contention resolution is unsuccessful, the UE reselects RACH resources, performs physical random access channel (PRACH) transmission, and makes the next random access attempt.

[0114] In two-step random access (2-step RACH), the first step is for the UE to send message A (MsgA) to the network. After receiving MsgA, the network sends message B (MsgB) to the UE. If the UE does not receive MsgB within a certain period of time, it increments the counter that counts the number of times MsgA has been sent and resends MsgA. If the counter counts the number of times MsgA has been sent, the UE switches from the 2-step random access process to the 4-step random access process.

[0115] MsgA consists of the MsgA preamble and MsgA PUSCH parts. The preamble part is sent on the Ro used for 2-step RACH, and the PUSCH part is sent on the MsgA PUSCH resources associated with the MsgA preamble and Ro. MsgA PUSCH resources are a set of PUSCH resources configured for each PRACH time slot, including time-frequency resources and demodulation reference signal (DMRS) resources, and are associated with the PRACH resources within the PRACH slot.

[0116] To facilitate a better understanding of the embodiments of the present application, the mapping of the synchronization signal block (SSB) to the RO in 5G NR is described.

[0117] The configuration parameters for PRACH resources and SSB-RO are configured in System Information Block 1 (SIB1). In NR, the network can configure multiple frequency-division multiplexing (FDM) PRACH transmission opportunities (also called PRACH Occasions, or ROs) at a time domain location for PRACH transmission. The number of ROs that can be FDMed at a time can be: {1, 2, 4, 8}, which is configured and determined by the higher-layer parameter msg1-FDM.

[0118] The random access preamble can only be transmitted on the time domain resources configured by the parameter PRACHConfigurationIndex and the frequency domain resources configured by the parameter msg1-FDM. RA∈{0,1,…,M-1}, where M is equal to the high-level parameter msg1-FDM. At the time of initial access, the PRACH frequency domain resource n RA The PRACH frequency domain resource n is numbered in ascending order starting from the lowest frequency RO resource in the initial active uplink bandwidth part. Otherwise, the PRACH frequency domain resource n is RA The RO resources are numbered in ascending order, starting from the lowest frequency RO resource within the active uplink bandwidth part. For example, in Figure 6, the number of FDM ROs at a time is 8 (msg1-FDM=8), and the RO resources are numbered from RO#0 to RO#7 in ascending order of frequency.

[0119] In NR, there is an association between RO and the SSB actually sent. RO is associated to SSB in the order of frequency domain (from low frequency to high frequency) and then time domain. One SSB may be associated with multiple consecutive ROs, or multiple SSBs may be associated with one RO (in this case, different SSBs correspond to different Preambles), which is configured by the network through the parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB. For example, oneEighth means that one SSB is associated with 8 consecutive ROs, eight means that 8 SSBs are associated with one RO, and {n4,n8,n12,…} represents the number of Preambles associated with each SSB on an RO. For example, the value n4 means that the number of Preambles associated with each SSB on an RO is 4, and n8 means that the number of Preambles associated with each SSB on an RO is 4.

[0120] Among them, ssb-perRACH-OccasionAndCB-PreamblesPerSSB can be as follows:

[0121] After all SSBs have completed one round of association with the RO, an SSB-RO mapping cycle is formed. An SSB-RO association period may include one or more SSB-RO mapping cycles. An SSB-RO association pattern period may include one or more SSB-RO association periods. The SSB-RO mapping is repeated based on the association pattern period, and the maximum association pattern period is 160ms.

[0122] Typically, a base station can use different beams to transmit different SSBs. The number of SSBs is configured using the ssb-PositionsInBurst parameter. For FR2, the maximum number of SSBs is 64. Based on the strength of the received downlink beam or SSB, the UE selects the RO or "RO and preamble combination" associated with the SSB with a good signal to send Msg1. In this way, the network can determine the SSB selected by the UE based on the RO or "RO and preamble combination" of the received preamble. Msg2 is then sent on the downlink beam corresponding to the SSB to ensure the reception quality of the downlink signal.

[0123] Taking Figure 6 as an example, the number of FDM ROs at a given moment is eight, and the number of SSBs actually transmitted is four, namely SSB#0, SSB#1, SSB#2, and SSB#3. Each SSB is associated with two ROs. If the UE determines to send PRACH or Msg1 on the RO corresponding to SSB#0, the UE selects one RO between RO#0 and RO#1 to send the PRACH.

[0124] Taking Figure 7 below as an example, the number of FDM ROs at a given moment is 2, and the number of SSBs actually transmitted is 8, namely SSB#0, SSB#1, ..., SSB#7, with one RO associated with every two SSBs. When multiple SSBs share a RO, the preamble sets associated with these multiple SSBs are different, that is, the same preamble cannot belong to the preamble sets associated with different SSBs at the same time: Taking RO#0 in Figure 7 as an example, RO#0 has a total of 60 preambles, of which preambles with indexes 0 to 29 are associated with SSB#0, and preambles with indexes 30 to 59 are associated with SSB#1.

[0125] Before sending PRACH, the UE first selects an SSB with RSRP higher than the threshold based on the Reference Signal Received Power (RSRP) of the received beam (or SSB). If the RSRP of multiple SSBs is higher than the threshold, the terminal can select any SSB with RSRP higher than the threshold. If there is no SSB with RSRP higher than the threshold, the UE selects an SSB based on the implementation.

[0126] Based on the network configuration, the UE obtains the correspondence between the SSB and the RO. After selecting the SSB, the RO corresponding to the selected SSB is used as the RO for transmitting the PRACH, Preamble, or Msg1. If the selected SSB is associated with multiple ROs, the terminal can select one of the ROs for transmitting the PRACH, Preamble, or Msg1.

[0127] For example: In the example shown in Figure 6, assuming that the UE selects SSB#1, the UE can select one from RO#2 and RO#3 to send PRACH or Msg1; in the example shown in Figure 7, if the UE selects SSB#1, the UE can select the available RO closest to the current time in the RO (RO#0 or 4) associated with SSB#1 to send PRACH or Msg1. In the selected RO, the UE selects a preamble from the preamble set associated with the selected SSB to send PRACH. As shown in Figure 7, one RO is associated with two SSBs, so in the available preamble set associated with the SSB in one RO, the preamble will be divided into two subsets, each subset corresponding to one SSB. The UE will select a preamble sequence in the preamble subset corresponding to the selected SSB for sending PRACH or Msg1.

[0128] The SSB described in the embodiments of the present application can be used interchangeably with the synchronization signal / physical broadcast channel block (SS / PBCH block), and can also be called any information block or resource block that contains at least one of a synchronization signal, a broadcast signal, a broadcast channel (PBCH), other system messages, and a downlink broadcast channel.

[0129] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0130] FIG8 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG8 , the wireless communication method 200 may include at least part of the following contents:

[0131] S210: When the first uplink transmission fails, the terminal performs a first operation.

[0132] The first operation includes at least one of the following:

[0133] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0134] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0135] Performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0136] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0137] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource designated by the network side;

[0138] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or, the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or, the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0139] It should be understood that FIG8 shows the steps or operations of the wireless communication method 200, but these steps or operations are merely examples, and the embodiments of the present application may also perform other operations or variations of the operations in FIG8.

[0140] The "uplink transmission failure" described in the embodiments of the present application can be understood as: the failure of the network to receive the uplink transmission, or the failure of the network to receive the uplink transmission. In other words, although the terminal sent an uplink transmission, the terminal did not receive feedback from the network, or the network feedback received by the terminal indicated that the uplink transmission failed to be received, or the terminal indirectly learned of the uplink transmission failure through specific information or specific operations.

[0141] The enhanced duplexing described in the embodiments of the present application may also be referred to as: enhanced duplex mode, cross duplexing (XDD), enhanced full duplex, enhanced full duplex mode, etc., and the embodiments of the present application are not limited thereto. The enhanced duplexing described in the embodiments of the present application may be expressed as: supporting an uplink subband on a downlink time unit, or supporting a downlink subband on an uplink time unit, or supporting at least one of an uplink subband and a downlink subband on a flexible time unit, or uplink or downlink resource transmission on a set of at least two of the above three time units.

[0142] The uplink resources for enhanced duplexing described in the embodiments of the present application may include, but are not limited to, at least one of the following:

[0143] Uplink subband resources supported in downlink time units;

[0144] Uplink remaining subband resources when supporting downlink subbands in uplink time units;

[0145] Uplink subband resources supported on flexible time units;

[0146] Uplink remaining sub-band resources when supporting downlink sub-band transmission in flexible time units.

[0147] The uplink resources of the non-enhanced duplex mode described in the embodiments of the present application may include, but are not limited to, at least one of the following:

[0148] Uplink resources on uplink time units, uplink resources on flexible time units.

[0149] It should be noted that the uplink transmission performance of the enhanced duplex uplink resources may be different from that of the non-enhanced duplex uplink resources. For example, the uplink transmission on the enhanced duplex uplink resources may be more affected by interference from other signals. Therefore, the uplink transmission performance on the enhanced duplex uplink resources is worse than the uplink transmission performance on the non-enhanced duplex uplink resources.

[0150] In an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and can solve the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode.

[0151] Illustratively, when the first uplink transmission fails, the terminal switches the retransmission resources of the first uplink transmission from the enhanced duplex uplink resources to the non-enhanced duplex uplink resources, thereby improving the retransmission reliability of the first uplink transmission.

[0152] Illustratively, in the case where the first uplink transmission fails, the terminal selects the retransmission resource of the first uplink transmission as a non-enhanced duplex uplink resource, thereby improving the retransmission reliability of the first uplink transmission.

[0153] Illustratively, in the event that the first uplink transmission fails, the terminal selects the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side, thereby improving the retransmission reliability of the first uplink transmission.

[0154] Exemplarily, when the first uplink transmission fails, the terminal performs a second uplink transmission and switches the transmission resources of the second uplink transmission from enhanced duplex uplink resources to non-enhanced duplex uplink resources, thereby improving the transmission reliability of the second uplink transmission.

[0155] Exemplarily, when the first uplink transmission fails, the terminal performs a second uplink transmission and selects the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, thereby improving the transmission reliability of the second uplink transmission.

[0156] Illustratively, when the first uplink transmission fails, the terminal performs a second uplink transmission and selects the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side, thereby improving the transmission reliability of the second uplink transmission.

[0157] Exemplarily, when the first uplink transmission fails, the terminal performs a second uplink transmission, and after the second uplink transmission fails, switches the retransmission resources of the second uplink transmission from the enhanced duplex uplink resources to the non-enhanced duplex uplink resources, thereby improving the retransmission reliability of the second uplink transmission.

[0158] Exemplarily, when the first uplink transmission fails, the terminal performs a second uplink transmission, and after the second uplink transmission fails, selects the retransmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, thereby improving the retransmission reliability of the second uplink transmission.

[0159] Exemplarily, when the first uplink transmission fails, the terminal performs a second uplink transmission, and after the second uplink transmission fails, selects the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side, thereby improving the retransmission reliability of the second uplink transmission.

[0160] The random access response message described in the embodiment of the present application includes a feedback signal for an uplink signal during a random access channel (RACH), such as Msg2, MsgB, and Msg4 sent by the network, and a feedback signal for a PUSCH in a RACH-less handover.

[0161] In the embodiments of the present application, RACH opportunity (RO) and PRACH opportunity both refer to the time-frequency resources required for transmitting a PRACH sequence. Random access (RA) may refer to a random access procedure.

[0162] In the embodiment of the present application, the RO type can also be expressed as: RO group, RO category, PRACH resource type, PRACH resource group, RACH type, RACH category, etc.

[0163] The PRACH or MsgA PRACH or MsgA PUSCH reception failure described in the embodiments of the present application may mean that the terminal does not receive corresponding feedback information or does not receive feedback information within a certain period of time (for example, within a random access response window).

[0164] In some embodiments, the time unit described in the embodiments of the present application includes but is not limited to at least one of the following:

[0165] OFDM symbol, time slot, subframe, frame, microsecond, millisecond, second, minute, hour, day.

[0166] In an embodiment of the present application, the terminal supports full-duplex and the network-side device supports full-duplex; or, the terminal supports half-duplex and the network-side device supports full-duplex.

[0167] Exemplarily, the terminal supporting half-duplex may mean that the terminal can only perform downlink reception (eg, receiving a DL signal or a DL channel) or uplink transmission (eg, transmitting a UL signal or a UL channel) in one time unit.

[0168] Exemplarily, the terminal side supports full-duplex, which may mean that uplink transmission (eg, transmission of a UL signal or a UL channel) and downlink reception (eg, reception of a DL signal or a DL channel) can be performed simultaneously in one time unit.

[0169] In the embodiment of the present application, the network side device adopts full-duplex mode to achieve the purpose of enhancing coverage, reducing transmission delay, and improving resource utilization efficiency. The terminal adopts full-duplex mode to achieve the above gains while also improving DL or UL throughput.

[0170] In some embodiments, when using full-duplex mode, a guard band (GB) is reserved between UL and DL transmissions to achieve frequency isolation and reduce self-interference. Because the terminal's self-interference cancellation capability is weaker than that of the network-side equipment, the GBs reserved by the terminal when using forward duplex mode are larger than those reserved by the network-side equipment. This means that the terminal requires more reserved physical resource blocks (PRBs) as guard bands.

[0171] Optionally, the first threshold may be agreed upon by a protocol, or the first threshold may be configured by the network side.

[0172] Optionally, the second threshold may be agreed upon by a protocol, or the second threshold may be configured by the network side.

[0173] Optionally, the third threshold may be agreed upon by a protocol, or the third threshold may be configured by the network side.

[0174] In some embodiments, before the terminal performs the first operation (i.e., before S210), the wireless communication method 200 further includes:

[0175] The terminal receives first information from a network-side device, wherein the first information includes at least one of the following: first indication information, second indication information, and third indication information;

[0176] The first indication information is used to instruct the retransmission resource of the first uplink transmission to be switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or the first indication information is used to instruct the retransmission resource of the first uplink transmission to be selected as the non-enhanced duplex uplink resource, or the first indication information is used to instruct the retransmission resource of the first uplink transmission to be selected as the first target uplink resource;

[0177] The second indication information is used to instruct that the transmission resource of the second uplink transmission be switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the second target uplink resource;

[0178] Among them, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the non-enhanced duplex uplink resource, or, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the third target uplink resource.

[0179] Exemplarily, when the first indication information is used to instruct to switch the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplexing to the uplink resource of non-enhanced duplexing, the first indication information may be a resource switching indication.

[0180] Exemplarily, in the case where the first indication information is used to indicate that the retransmission resource of the first uplink transmission is selected as a non-enhanced duplex uplink resource, or in the case where the first indication information is used to indicate that the retransmission resource of the first uplink transmission is selected as a first target uplink resource, the first indication information may be a resource type indication.

[0181] Exemplarily, when the second indication information is used to instruct to switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, the second indication information may be a resource switching indication.

[0182] Exemplarily, in the case where the second indication information is used to indicate that the transmission resource of the second uplink transmission is selected as a non-enhanced duplex uplink resource, or in the case where the second indication information is used to indicate that the transmission resource of the second uplink transmission is selected as a second target uplink resource, the second indication information may be a resource type indication.

[0183] Exemplarily, when the third indication information is used to instruct to switch the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplexing to the uplink resource of non-enhanced duplexing, the third indication information may be a resource switching indication.

[0184] Exemplarily, in the case where the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as a non-enhanced duplex uplink resource, or, in the case where the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as a third target uplink resource, the third indication information may be a resource type indication.

[0185] In some embodiments, the first information is carried by at least one of the following:

[0186] RAR used to indicate fallback or switching from a first RACH type to a second RACH type;

[0187] Downlink Control Information (DCI) for scheduling the RAR corresponding to the RAR indicating fallback or switching from the first RACH type to the second RACH type;

[0188] A specific RAR used to indicate resource switching;

[0189] A specific scheduling DCI corresponding to the RAR used to indicate resource switching;

[0190] A specific RAR that indicates the resource type;

[0191] A specific scheduling DCI corresponding to the RAR indicating the resource type;

[0192] A specific RAR used to indicate random access fallback;

[0193] A specific scheduling DCI corresponding to the RAR for indicating random access fallback;

[0194] The first uplink transmission is an uplink transmission in the first RACH type, and the second uplink transmission is an uplink transmission in the second RACH type.

[0195] In some embodiments, the RAR associated with the first information includes but is not limited to at least one of the following:

[0196] RAR type information, timing advance (TA) information, random access code identifier (Preamble ID) information detected by the network side, reference signal information associated with the PRACH in the first RACH type (such as SSB, sounding reference signal (SRS)), indicating the random access code identifier (Preamble ID) to be used for retransmission of the random access code (preamble) in the first RACH type.

[0197] In some embodiments, the first RACH type is 2-step random access (2-step RACH), and the second RACH type is 4-step random access (4-step RACH).

[0198] In some embodiments, the first uplink transmission is a MsgA PUSCH in a two-step random access, and the second uplink transmission is a Msg3 PUSCH in a four-step random access.

[0199] Exemplarily, the first uplink transmission is the MsgA PUSCH in the two-step random access, and the second uplink transmission is the Msg3 PUSCH in the four-step random access. Specifically, for the 2-step RACH process, the MsgA transmission includes the preamble part and the MsgA PUSCH part. When the network side supports enhanced duplex mode, the MsgA PUSCH may be on the uplink resources of enhanced duplex or on the uplink resources of non-enhanced duplex. The transmission performance of the MsgA PUSCH on the uplink resources of enhanced duplex may be different from the transmission performance of the MsgA PUSCH on the uplink resources of non-enhanced duplex. For example, the MsgA PUSCH on the uplink subband of the downlink slot may be more interfered with by other signals. In this case, it is necessary to switch to the MsgA PUSCH on the uplink slot for retransmission.

[0200] Exemplarily, the first uplink transmission is MsgA PUSCH in two-step random access, and the second uplink transmission is Msg3 PUSCH in four-step random access. In this case, resource switching or resource fallback or resource indication of the first uplink transmission (MsgA PUSCH) or the second uplink transmission (Msg3 PUSCH) in one or more of the following cases may be supported:

[0201] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. The terminal repeats the Msg APUSCH transmission. At this time, the MsgA PUSCH resource is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource.

[0202] The network successfully receives the MsgA preamble, but fails to receive the MsgA PUSCH. The terminal then repeats the Msg APUSCH. After a certain number of retransmissions, the MsgA PUSCH resource switches from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource.

[0203] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. The terminal repeats the Msg APUSCH transmission. When the number of repeated transmissions reaches a certain number, it falls back to Msg3 PUSCH transmission, that is, falls back to 4-step RACH. At this time, the Msg3 PUSCH resource is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource.

[0204] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. The terminal then repeats the Msg APUSCH transmission. After a certain number of repeated transmissions, it falls back to the Msg3 PUSCH transmission, that is, falls back to the 4-step RACH. If the Msg3 PUSCH still fails and the Msg3 PUSCH repeated transmission reaches a certain number of times, the resource for the Msg3 PUSCH repeated transmission is switched to the uplink resource of non-enhanced duplex.

[0205] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. When the network side indicates a resource switching indication, it instructs the resource for repeated transmission of MsgA PUSCH to switch to the uplink resource of non-enhanced duplex;

[0206] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. When the network side indicates a resource type indication, it instructs the repeated transmission of MsgA PUSCH to use the specified uplink resources for repeated transmission;

[0207] The network successfully receives the MsgA preamble but fails to receive the MsgA PUSCH. When the network issues a resource switching instruction and indicates a fallback from 2-step RACH to 4-step RACH (i.e., using fallback RAR), the resources for repeated Msg3 PUSCH transmissions are switched to non-enhanced duplex uplink resources.

[0208] The network side successfully receives the MsgA preamble part, but fails to receive the MsgA PUSCH part. When the network side indicates a resource type indication and falls back from 2-step RACH to 4-step RACH indication (i.e., using fallback RAR), the repeated transmission of Msg3 PUSCH uses the specified uplink resources for repeated transmission.

[0209] Exemplarily, the first uplink transmission is MsgA PUSCH in two-step random access, and the second uplink transmission is Msg3 PUSCH in four-step random access. In this case, at least one of the resource switching indication, the resource fallback indication, and the resource type indication is carried by one or more of the following bearers:

[0210] A random access response message indicating 2-step RACH fallback to 4-step RACH;

[0211] Scheduling DCI of the random access response message indicating 2-step RACH fallback to 4-step RACH;

[0212] Specific random access response message for resource switching / fallback / type indication;

[0213] Specific scheduling DCI for random access response message used for resource switching / fallback / type indication.

[0214] In some implementations, the random access response message for resource switching / fallback / type indication includes at least one of the following:

[0215] RAR type information, such as whether it is an RAR that falls back to Msg3 PUSCH or an RAR that falls back to MsgA retransmission using different or specific resource types;

[0216] TA information;

[0217] Preamble ID information detected by the network side;

[0218] Reference signal information associated with PRACH (such as SSB, SRS, etc.), such as the network side instructing the terminal to use the beam associated with the reference signal and PRACH resources for uplink transmission in subsequent uplink preamble transmission;

[0219] Indicates the preamble ID information to be used for MsgA preamble retransmission.

[0220] In this embodiment, during the 2-step RACH process, MsgA PUSCH reception fails on uplink resources configured with enhanced duplex, but the MsgA preamble is successfully received. In this case, the retransmission resource for the MsgA PUSCH is switched from an uplink resource with enhanced duplex to an uplink resource with non-enhanced duplex, or the retransmission resource for the MsgA PUSCH is selected as an uplink resource with non-enhanced duplex, or the retransmission resource for the MsgA PUSCH is selected as an uplink resource designated by the network side. This improves the retransmission reliability of the MsgA PUSCH and reduces the transmission delay of the MsgA PUSCH. Alternatively, the transmission resources of the Msg3 PUSCH may be switched from uplink resources with enhanced duplexing to uplink resources with non-enhanced duplexing, or the transmission resources of the Msg3 PUSCH may be selected as uplink resources with non-enhanced duplexing, or the transmission resources of the Msg3 PUSCH may be selected as uplink resources designated by the network side, thereby improving the transmission reliability of the Msg3 PUSCH and reducing the transmission delay of the Msg3 PUSCH. Alternatively, the retransmission resources of the Msg3 PUSCH may be switched from uplink resources with enhanced duplexing to uplink resources with non-enhanced duplexing, or the retransmission resources of the Msg3 PUSCH may be selected as uplink resources with non-enhanced duplexing, or the retransmission resources of the Msg3 PUSCH may be selected as uplink resources designated by the network side, thereby improving the retransmission reliability of the Msg3 PUSCH and reducing the transmission delay of the Msg3 PUSCH.

[0221] In some embodiments, the first information is carried by at least one of the following:

[0222] A response message for indicating a fallback from a first cell handover type or a switch to a second cell handover type;

[0223] A scheduling DCI corresponding to a response message indicating fallback from a first cell handover type or handover to a second cell handover type;

[0224] A specific response message for indicating resource switching;

[0225] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0226] A specific response message indicating the resource type;

[0227] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0228] A specific response message for indicating cell handover fallback;

[0229] A specific scheduling DCI corresponding to a response message indicating cell handover fallback;

[0230] A specific response message for scheduling uplink retransmission in the first cell handover type;

[0231] A specific scheduling DCI corresponding to a response message for scheduling uplink retransmission in the first cell handover type;

[0232] The first uplink transmission is an uplink transmission in the first cell handover type, and the second uplink transmission is an uplink transmission in the second cell handover type.

[0233] In some embodiments, the response message associated with the first information includes but is not limited to at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the first cell switching type.

[0234] In some embodiments, the first cell handover type is a RACH-less handover, and the second cell handover type is a RACH-based handover.

[0235] In some embodiments, the first uplink transmission is a PUSCH in a cell handover without random access;

[0236] The second uplink transmission is at least one of the following: Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, and MsgA PUSCH in two-step random access.

[0237] Exemplarily, the first uplink transmission is the PUSCH in RACH less handover (also referred to as RACH less PUSCH); the second uplink transmission is at least one of the following: Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, MsgA PUSCH in two-step random access. Specifically, for the RACH less handover process, the RACH less PUSCH transmission can be a dynamically scheduled PUSCH or a semi-statically scheduled PUSCH. When the network side supports enhanced duplex mode, RACH less PUSCH may be on the uplink resources of enhanced duplex or on the uplink resources of non-enhanced duplex. The transmission performance of RACH less PUSCH on the uplink resources of enhanced duplex may be different from the transmission performance of RACH less PUSCH on the uplink resources of non-enhanced duplex. For example, the RACH less PUSCH on the uplink subband of the downlink slot may be subject to greater interference from other signals. In this case, it is necessary to switch to the uplink slot for RACH less PUSCH retransmission. For dynamic RACH less PUSCH, network-based implementation can ensure that the corresponding PUSCH is on a specific resource type. For semi-statically configured RACH less PUSCH, sometimes it is necessary to switch to non-enhanced duplex uplink resources.

[0238] Exemplarily, the first uplink transmission is a PUSCH in a RACH less handover (also referred to as a RACH less PUSCH); the second uplink transmission is at least one of the following: Msg1 PRACH in a four-step random access, MsgA PRACH in a two-step random access, or MsgA PUSCH in a two-step random access. In this case, resource switching, resource fallback, or resource indication for the first uplink transmission (RACH less PUSCH) or the second uplink transmission (Msg1 PRACH, MsgA PRACH, or MsgA PUSCH) in one or more of the following situations may be supported:

[0239] If RACH less PUSCH reception fails, RACH less PUSCH is repeated and the RACH less PUSCH resource is switched from enhanced duplex uplink resource to non-enhanced duplex uplink resource.

[0240] If RACH less PUSCH reception fails, RACH less PUSCH is repeatedly transmitted. When the number of RACH less PUSCH retransmissions reaches a certain number, the RACH less PUSCH resource is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource.

[0241] If RACH less PUSCH reception fails, RACH less PUSCH is repeated. After a certain number of repeated transmissions, it falls back to RACH based handover, that is, it falls back to 4-step RACH or 2-step RACH for handover. At this time, Msg1 PRACH resources, MsgA PRACH resources, or MsgA PUSCH resources use non-enhanced duplex uplink resources.

[0242] If RACH less PUSCH reception fails, RACH less PUSCH is repeatedly transmitted. After a certain number of repeated transmissions, it falls back to RACH based handover, that is, it falls back to 4-step RACH or 2-step RACH for handover. If Msg1 PRACH, MsgA PRACH, or MsgA PUSCH still fails and repeated transmissions reach a certain number of times, the resources for the repeated Msg1 PRACH, MsgA PRACH, or MsgA PUSCH transmissions are switched to non-enhanced duplex uplink resources.

[0243] If RACH less PUSCH reception fails, the network side indicates a resource switching indication, instructing the resource of repeated transmission of RACH less PUSCH to switch to the uplink resource of non-enhanced duplex;

[0244] If RACH less PUSCH reception fails, the network side indicates a resource type indication, indicating that the repeated transmission of RACH less PUSCH uses the specified uplink resources for repeated transmission;

[0245] RACH less PUSCH reception fails. When the network indicates a resource switching indication and indicates fallback to the cell switching process of 4-step RACH or 2-step RACH, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH are switched to the uplink resources of non-enhanced duplex.

[0246] RACH less PUSCH reception fails. When the network indicates a resource type indication and indicates fallback to 4-step RACH or 2-step RACH during the cell handover process, the transmission of Msg1 PRACH or MsgA PRACH or MsgA PUSCH is repeated using the uplink resources specified by the network.

[0247] Exemplarily, the first uplink transmission is a PUSCH in RACH less handover; the second uplink transmission is at least one of the following: Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, and MsgA PUSCH in two-step random access. In this case, at least one of the resource switching indication, resource fallback indication, and resource type indication is carried by one or more of the following bearers:

[0248] A random access response message indicating a change from RACH less handover to RACH based handover (such as 2-step RACH or 4-step RACH based handover);

[0249] The scheduling DCI of the random access response message indicating the transition from RACH less handover to RACH based handover (such as 2-step RACH or 4-step RACH based handover);

[0250] In a specific response message for resource switching / fallback / type indication;

[0251] Scheduling DCI for a specific response message for resource switching / fallback / type indication;

[0252] Schedule RACH less PUSCH retransmission messages, such as DCI.

[0253] In some implementations, the response message for resource switching / fallback / type indication includes one or more of the following information:

[0254] The type of the response message, such as whether it indicates a switch from RACH less handover to RACH based handover, or whether it indicates that subsequent RACH less PUSCH transmissions use different or specific resource types;

[0255] Timing advance information;

[0256] Reference signal (such as SSB, SRS, etc.) information associated with RACH less PUSCH, such as the network instructing the terminal to use the beam associated with the reference signal and RACH less PUSCH resources for uplink transmission in subsequent uplink RACH less PUSCH transmission.

[0257] In this embodiment, during RACH less handover, RACH less PUSCH reception fails on uplink resources configured with enhanced duplexing. In this case, the retransmission resource of the RACH less PUSCH is switched from an uplink resource with enhanced duplexing to an uplink resource with non-enhanced duplexing, or the retransmission resource of the RACH less PUSCH is selected as an uplink resource with non-enhanced duplexing, or the retransmission resource of the RACH less PUSCH is selected as an uplink resource designated by the network side. This improves the retransmission reliability of the RACH less PUSCH and reduces the transmission delay of the RACH less PUSCH. Or, the transmission resources of Msg1PRACH or MsgA PRACH or MsgA PUSCH are switched from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH are selected as non-enhanced duplex uplink resources, or, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH are selected as uplink resources specified by the network side, thereby improving the transmission reliability of Msg1 PRACH or MsgA PRACH or MsgA PUSCH and reducing the transmission delay of Msg1 PRACH or MsgA PRACH or MsgA PUSCH. Or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH is switched from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH is selected as the uplink resource of non-enhanced duplex, or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH is selected as the uplink resource specified by the network side, thereby improving the retransmission reliability of Msg1 PRACH or MsgA PRACH or MsgA PUSCH and reducing the transmission delay of Msg1 PRACH or MsgA PRACH or MsgA PUSCH.

[0258] In some embodiments, the first information is carried by at least one of the following:

[0259] A response message for indicating a fallback from the third RACH type or a switch to the fourth RACH type;

[0260] A scheduling DCI corresponding to a response message indicating fallback or switching from the third RACH type to the fourth RACH type;

[0261] A specific response message for indicating resource switching;

[0262] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0263] A specific response message indicating the resource type;

[0264] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0265] A specific response message for indicating random access fallback;

[0266] A specific scheduling DCI corresponding to a response message indicating random access fallback;

[0267] The first uplink transmission is an uplink transmission of the third RACH type, and the second uplink transmission is an uplink transmission of the fourth RACH type.

[0268] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the third RACH type.

[0269] In some embodiments, the third RACH type is contention-free random access (CFRA), and the fourth RACH type is contention-based random access (CBRA).

[0270] In some embodiments, the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA;

[0271] The second uplink transmission is at least one of the following: Msg1PRACH in CBRA, MsgA PRACH in CBRA, and MsgA PUSCH in CBRA.

[0272] Exemplarily, the first uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA; the second uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA. Specifically, for CFRA, whether based on 4-step RACH or 2-step RACH, if Msg1 PRACH, MsgA PRACH, or MsgA PUSCH is sent on enhanced duplex resources and reception fails, it can be switched to non-enhanced duplex uplink resources for transmission, thereby improving the reliability of uplink transmission.

[0273] Exemplarily, the first uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA; the second uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA. Specifically, one or more of the following first uplink transmission (Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA) or second uplink transmission (Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA) resource switching, resource fallback, or resource indication may be supported:

[0274] If the reception of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA fails, the Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA is repeated. At this time, the Msg1 PRACH, MsgA PRACH, or MsgA PUSCH resource in CFRA is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource.

[0275] If the reception of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA fails, Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA is repeated. When the number of repeated transmissions reaches a certain number, the Msg1 PRACH, MsgA PRACH, or MsgA PUSCH resources in CFRA are switched from enhanced duplex uplink resources to non-enhanced duplex uplink resources.

[0276] If the reception of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA fails, the Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA is repeated. When the number of repeated transmissions reaches a certain number, it falls back to CBRA. At this time, the Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA uses the uplink resources of non-enhanced duplex.

[0277] If the reception of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CFRA fails, the Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CFRA is repeated. When the repeated transmission reaches a certain number of times, it falls back to CBRA. If the Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CBRA still fails and the repeated transmission reaches a certain number of times, the resource for the repeated transmission of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CBRA is switched to the uplink resource of non-enhanced duplex.

[0278] If the reception of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CFRA fails, the network side indicates a resource switching indication, indicating that the resource for repeated transmission of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CFRA is switched to the uplink resource of non-enhanced duplex;

[0279] Reception of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA fails, and the network side indicates a resource type indication, indicating that repeated transmission of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA is to be repeated using uplink resources specified by the network side;

[0280] If the reception of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA fails, the network side indicates a resource switching indication and indicates fallback to the CBRA process. The transmission resources of Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA are switched to non-enhanced duplex uplink resources.

[0281] If the reception of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CFRA fails, the network side indicates a resource type indication and indicates fallback to the CBRA process. At this time, the transmission of Msg1 PRACH, MsgA PRACH or MsgA PUSCH in CBRA is repeated using the uplink resources specified by the network side.

[0282] Exemplarily, the first uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CFRA; the second uplink transmission is Msg1 PRACH, MsgA PRACH, or MsgA PUSCH in CBRA. In this case, at least one of the resource switching indication, resource fallback indication, and resource type indication is carried by one or more of the following bearers:

[0283] A response message indicating switching from CFRA to CBRA;

[0284] The scheduling DCI of the response message indicating the switch from CFRA to CBRA;

[0285] Specific response messages for resource switching / fallback / type indication;

[0286] Specific scheduling DCI for response messages for resource switching / fallback / type indication;

[0287] Indicates the response message of the CFRA resource.

[0288] For example, the corresponding Msg1 PRACH or MsgA PRACH or MsgA PUSCH uplink resource type is indicated in the response message indicating the CFRA resource.

[0289] In some implementations, the response message for resource switching / fallback / type indication includes one or more of the following information:

[0290] Type information of the response message;

[0291] Timing advance information;

[0292] Reference signal (such as SSB, SRS, etc.) information associated with Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA, such as the network side instructing the terminal to use the beam associated with the reference signal and Msg1 PRACH or MsgA PRACH or MsgA PUSCH resources for uplink transmission in subsequent Msg1 PRACH or MsgA PRACH or MsgA PUSCH transmissions in CFRA.

[0293] In this embodiment, in CFRA, Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA fails to be received on uplink resources configured with enhanced duplexing. In this case, the retransmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA are switched from the uplink resources of enhanced duplex to the uplink resources of non-enhanced duplex, or the retransmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA are selected as the uplink resources of non-enhanced duplex, or the retransmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA are selected as the uplink resources specified by the network side, thereby improving the retransmission reliability of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA and reducing the transmission delay of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CFRA. Or, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA are switched from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA are selected as non-enhanced duplex uplink resources, or, the transmission resources of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA are selected as uplink resources specified by the network side, thereby improving the transmission reliability of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA and reducing the transmission delay of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA. Or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA is switched from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA is selected as the uplink resource of non-enhanced duplex, or, the retransmission resource of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA is selected as the uplink resource specified by the network side, thereby improving the retransmission reliability of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA and reducing the transmission delay of Msg1 PRACH or MsgA PRACH or MsgA PUSCH in CBRA.

[0294] Therefore, in an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and solving the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode.

[0295] The above, in conjunction with Figure 8, describes in detail the terminal side embodiment of the present application. The following, in conjunction with Figure 9, describes in detail the network side embodiment of the present application. It should be understood that the network side embodiment and the terminal side embodiment correspond to each other, and similar descriptions can refer to the terminal side embodiment.

[0296] FIG9 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in FIG9 , the wireless communication method 300 may include at least part of the following contents:

[0297] S310: The network-side device sends first information to the terminal, where the first information is used by the terminal to perform a first operation when a first uplink transmission fails.

[0298] The first operation includes at least one of the following:

[0299] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0300] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0301] Performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0302] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0303] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource designated by the network side;

[0304] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or, the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or, the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0305] It should be understood that FIG9 shows the steps or operations of the wireless communication method 300, but these steps are merely examples, and the embodiments of the present application may also perform other operations or variations of the operations in FIG9.

[0306] The "uplink transmission failure" described in the embodiments of the present application can be understood as: the failure of the network to receive the uplink transmission, or the failure of the network to receive the uplink transmission. In other words, although the terminal sent an uplink transmission, the terminal did not receive feedback from the network, or the network feedback received by the terminal indicated that the uplink transmission failed to be received, or the terminal indirectly learned of the uplink transmission failure through specific information or specific operations.

[0307] The enhanced duplexing described in the embodiments of the present application may also be referred to as: enhanced duplex mode, cross duplexing (XDD), enhanced full duplex, enhanced full duplex mode, etc., and the embodiments of the present application are not limited thereto. The enhanced duplexing described in the embodiments of the present application may be expressed as: supporting an uplink subband on a downlink time unit, or supporting a downlink subband on an uplink time unit, or supporting at least one of an uplink subband and a downlink subband on a flexible time unit, or uplink or downlink resource transmission on a set of at least two of the above three time units.

[0308] The uplink resources for enhanced duplexing described in the embodiments of the present application may include, but are not limited to, at least one of the following:

[0309] Uplink subband resources supported in downlink time units;

[0310] Uplink remaining subband resources when supporting downlink subbands in uplink time units;

[0311] Uplink subband resources supported on flexible time units;

[0312] Uplink remaining sub-band resources when supporting downlink sub-band transmission in flexible time units.

[0313] The uplink resources of the non-enhanced duplex mode described in the embodiments of the present application may include, but are not limited to, at least one of the following:

[0314] Uplink resources on uplink time units, uplink resources on flexible time units.

[0315] In some embodiments, the time unit described in the embodiments of the present application includes but is not limited to at least one of the following:

[0316] OFDM symbol, time slot, subframe, frame, microsecond, millisecond, second, minute, hour, day.

[0317] In an embodiment of the present application, the terminal supports full-duplex and the network-side device supports full-duplex; or, the terminal supports half-duplex and the network-side device supports full-duplex.

[0318] Exemplarily, the terminal supporting half-duplex may mean that the terminal can only perform downlink reception (eg, receiving a DL signal or a DL channel) or uplink transmission (eg, transmitting a UL signal or a UL channel) in one time unit.

[0319] Exemplarily, the terminal side supports full-duplex, which may mean that uplink transmission (eg, transmission of a UL signal or a UL channel) and downlink reception (eg, reception of a DL signal or a DL channel) can be performed simultaneously in one time unit.

[0320] In the embodiment of the present application, the network side device adopts full-duplex mode to achieve the purpose of enhancing coverage, reducing transmission delay, and improving resource utilization efficiency. The terminal adopts full-duplex mode to achieve the above gains while also improving DL or UL throughput.

[0321] In some embodiments, when using full-duplex mode, a guard band (PRB) is reserved between UL and DL transmissions to achieve frequency isolation and reduce self-interference. Because the terminal's self-interference cancellation capability is weaker than that of network-side equipment, the number of GBs reserved by the terminal when using forward duplex mode is larger than that of the network-side equipment. This means that the terminal requires more reserved PRBs as guard bands.

[0322] Optionally, the first threshold may be agreed upon by a protocol, or the first threshold may be configured by the network side.

[0323] Optionally, the second threshold may be agreed upon by a protocol, or the second threshold may be configured by the network side.

[0324] Optionally, the third threshold may be agreed upon by a protocol, or the third threshold may be configured by the network side.

[0325] In some embodiments, the first information includes at least one of the following: first indication information, second indication information, and third indication information;

[0326] The first indication information is used to instruct the retransmission resource of the first uplink transmission to be switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or the first indication information is used to instruct the retransmission resource of the first uplink transmission to be selected as the non-enhanced duplex uplink resource, or the first indication information is used to instruct the retransmission resource of the first uplink transmission to be selected as the first target uplink resource;

[0327] The second indication information is used to instruct that the transmission resource of the second uplink transmission be switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the second target uplink resource;

[0328] Among them, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is switched from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the non-enhanced duplex uplink resource, or, the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the third target uplink resource.

[0329] Exemplarily, when the first indication information is used to instruct to switch the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplexing to the uplink resource of non-enhanced duplexing, the first indication information may be a resource switching indication.

[0330] Exemplarily, in the case where the first indication information is used to indicate that the retransmission resource of the first uplink transmission is selected as a non-enhanced duplex uplink resource, or in the case where the first indication information is used to indicate that the retransmission resource of the first uplink transmission is selected as a first target uplink resource, the first indication information may be a resource type indication.

[0331] Exemplarily, when the second indication information is used to instruct to switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, the second indication information may be a resource switching indication.

[0332] Exemplarily, in the case where the second indication information is used to indicate that the transmission resource of the second uplink transmission is selected as a non-enhanced duplex uplink resource, or in the case where the second indication information is used to indicate that the transmission resource of the second uplink transmission is selected as a second target uplink resource, the second indication information may be a resource type indication.

[0333] Exemplarily, when the third indication information is used to instruct to switch the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplexing to the uplink resource of non-enhanced duplexing, the third indication information may be a resource switching indication.

[0334] Exemplarily, in the case where the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as a non-enhanced duplex uplink resource, or, in the case where the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as a third target uplink resource, the third indication information may be a resource type indication.

[0335] In some embodiments, the first information is carried by at least one of the following:

[0336] RAR used to indicate fallback or switching from a first RACH type to a second RACH type;

[0337] A scheduling DCI corresponding to the RAR indicating fallback or switching from the first RACH type to the second RACH type;

[0338] A specific RAR used to indicate resource switching;

[0339] A specific scheduling DCI corresponding to the RAR used to indicate resource switching;

[0340] A specific RAR that indicates the resource type;

[0341] A specific scheduling DCI corresponding to the RAR indicating the resource type;

[0342] A specific RAR used to indicate random access fallback;

[0343] A specific scheduling DCI corresponding to the RAR for indicating random access fallback;

[0344] The first uplink transmission is an uplink transmission in the first RACH type, and the second uplink transmission is an uplink transmission in the second RACH type.

[0345] In some embodiments, the RAR associated with the first information includes but is not limited to at least one of the following:

[0346] RAR type information, timing advance (TA) information, random access code identifier (Preamble ID) information detected by the network side, reference signal information associated with the PRACH in the first RACH type (such as SSB, SRS), indicating the random access code identifier (Preamble ID) to be used for retransmission of the random access code (preamble) in the first RACH type.

[0347] In some embodiments, the first RACH type is 2-step random access (2-step RACH), and the second RACH type is 4-step random access (4-step RACH).

[0348] In some embodiments, the first uplink transmission is a MsgA PUSCH in a two-step random access, and the second uplink transmission is a Msg3 PUSCH in a four-step random access.

[0349] In some embodiments, the first information is carried by at least one of the following:

[0350] A response message for indicating a fallback from a first cell handover type or a switch to a second cell handover type;

[0351] A scheduling DCI corresponding to a response message indicating fallback from a first cell handover type or handover to a second cell handover type;

[0352] A specific response message for indicating resource switching;

[0353] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0354] A specific response message indicating the resource type;

[0355] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0356] A specific response message for indicating cell handover fallback;

[0357] A specific scheduling DCI corresponding to a response message indicating cell handover fallback;

[0358] A specific response message for scheduling uplink retransmission in the first cell handover type;

[0359] A specific scheduling DCI corresponding to a response message for scheduling uplink retransmission in the first cell handover type;

[0360] The first uplink transmission is an uplink transmission in the first cell handover type, and the second uplink transmission is an uplink transmission in the second cell handover type.

[0361] In some embodiments, the response message associated with the first information includes but is not limited to at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the first cell switching type.

[0362] In some embodiments, the first cell handover type is a RACH-less handover, and the second cell handover type is a RACH-based handover.

[0363] In some embodiments, the first uplink transmission is a PUSCH in a cell handover without random access;

[0364] The second uplink transmission is at least one of the following: Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, and MsgA PUSCH in two-step random access.

[0365] In some embodiments, the first information is carried by at least one of the following:

[0366] A response message for indicating a fallback from the third RACH type or a switch to the fourth RACH type;

[0367] A scheduling DCI corresponding to a response message indicating fallback or switching from the third RACH type to the fourth RACH type;

[0368] A specific response message for indicating resource switching;

[0369] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0370] A specific response message indicating the resource type;

[0371] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0372] A specific response message for indicating random access fallback;

[0373] A specific scheduling DCI corresponding to a response message indicating random access fallback;

[0374] The first uplink transmission is an uplink transmission of the third RACH type, and the second uplink transmission is an uplink transmission of the fourth RACH type.

[0375] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the third RACH type.

[0376] In some embodiments, the third RACH type is contention-free random access (CFRA), and the fourth RACH type is contention-based random access (CBRA).

[0377] In some embodiments, the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA;

[0378] The second uplink transmission is at least one of the following: Msg1PRACH in CBRA, MsgA PRACH in CBRA, and MsgA PUSCH in CBRA.

[0379] Therefore, in an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and solving the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode.

[0380] The wireless communication method provided in the embodiments of the present application may be performed by a wireless communication device or a processing unit in the wireless communication device for performing the wireless communication method. The embodiments of the present application take the wireless communication device performing the wireless communication method as an example to illustrate the wireless communication device provided in the embodiments of the present application.

[0381] Figure 10 shows a schematic block diagram of a wireless communication device 400 according to an embodiment of the present application. As shown in Figure 10, the wireless communication device 400 includes: a processing unit 410;

[0382] In the case where the first uplink transmission fails, the processing unit 410 is configured to perform a first operation;

[0383] The first operation includes at least one of the following:

[0384] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0385] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0386] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0387] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0388] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0389] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0390] In some embodiments, before the wireless communication device 400 performs the first operation, the wireless communication device 400 further includes:

[0391] The transceiver unit 420 is configured to receive first information from a network-side device, wherein the first information includes at least one of the following: first indication information, second indication information, and third indication information;

[0392] The first indication information is used to instruct that the retransmission resource of the first uplink transmission be switched from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or the first indication information is used to instruct that the retransmission resource of the first uplink transmission be selected as a non-enhanced duplex uplink resource, or the first indication information is used to instruct that the retransmission resource of the first uplink transmission be selected as the first target uplink resource;

[0393] The second indication information is used to instruct that the transmission resource of the second uplink transmission be switched from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as a non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the second target uplink resource;

[0394] The third indication information is used to indicate that the retransmission resource of the second uplink transmission is switched from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the uplink resource of non-enhanced duplex, or the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the third target uplink resource.

[0395] In some embodiments, the first information is carried by at least one of the following:

[0396] A random access response RAR used to indicate a fallback or switch from a first random access channel RACH type to a second RACH type;

[0397] Downlink control information DCI corresponding to the RAR indicating fallback or switching from the first RACH type to the second RACH type;

[0398] A specific RAR used to indicate resource switching;

[0399] A specific scheduling DCI corresponding to the RAR used to indicate resource switching;

[0400] A specific RAR that indicates the resource type;

[0401] A specific scheduling DCI corresponding to the RAR indicating the resource type;

[0402] A specific RAR used to indicate random access fallback;

[0403] A specific scheduling DCI corresponding to the RAR for indicating random access fallback;

[0404] The first uplink transmission is an uplink transmission in the first RACH type, and the second uplink transmission is an uplink transmission in the second RACH type.

[0405] In some embodiments, the RAR associated with the first information includes at least one of the following: RAR type information, timing advance TA information, identification information of the random access code detected by the network side, reference signal information associated with the physical random access channel PRACH in the first RACH type, and a random access code identifier indicating that the random access code in the first RACH type needs to be used for retransmission.

[0406] In some embodiments, the first RACH type is two-step random access, and the second RACH type is four-step random access.

[0407] In some embodiments, the first uplink transmission is a message A MsgA physical uplink shared channel PUSCH in a two-step random access;

[0408] The second uplink transmission is message 3Msg3 PUSCH in four-step random access.

[0409] In some embodiments, the first information is carried by at least one of the following:

[0410] A response message for indicating a fallback from a first cell handover type or a switch to a second cell handover type;

[0411] A scheduling DCI corresponding to a response message indicating fallback from a first cell handover type or handover to a second cell handover type;

[0412] A specific response message for indicating resource switching;

[0413] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0414] A specific response message indicating the resource type;

[0415] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0416] A specific response message for indicating cell handover fallback;

[0417] A specific scheduling DCI corresponding to a response message indicating cell handover fallback;

[0418] A specific response message for scheduling uplink retransmission in the first cell handover type;

[0419] A specific scheduling DCI corresponding to a response message for scheduling uplink retransmission in the first cell handover type;

[0420] The first uplink transmission is an uplink transmission in the first cell handover type, and the second uplink transmission is an uplink transmission in the second cell handover type.

[0421] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the first cell switching type.

[0422] In some embodiments, the first cell handover type is a cell handover without random access, and the second cell handover type is a cell handover based on random access.

[0423] In some embodiments, the first uplink transmission is a PUSCH in a cell handover without random access;

[0424] The second uplink transmission is at least one of the following: message 1 Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, and MsgA PUSCH in two-step random access.

[0425] In some embodiments, the first information is carried by at least one of the following:

[0426] A response message for indicating a fallback from the third RACH type or a switch to the fourth RACH type;

[0427] A scheduling DCI corresponding to a response message indicating fallback or switching from the third RACH type to the fourth RACH type;

[0428] A specific response message for indicating resource switching;

[0429] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0430] A specific response message indicating the resource type;

[0431] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0432] A specific response message for indicating random access fallback;

[0433] A specific scheduling DCI corresponding to a response message indicating random access fallback;

[0434] The first uplink transmission is an uplink transmission in the third RACH type, and the second uplink transmission is an uplink transmission in the fourth RACH type.

[0435] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the third RACH type.

[0436] In some embodiments, the third RACH type is contention-free random access (CFRA), and the fourth RACH type is contention-based random access (CBRA).

[0437] In some embodiments, the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA;

[0438] The second uplink transmission is at least one of the following: Msg1 PRACH in CBRA, MsgA PRACH in CBRA, and MsgA PUSCH in CBRA.

[0439] In some embodiments, the transceiver unit 420 may be a communication interface or transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit 410 may be embedded in or independent of a processor of the terminal in the form of hardware.

[0440] It should be understood that the wireless communication device 400 according to the embodiment of the present application may correspond to the terminal in the method embodiment of the present application, and the various units in the wireless communication device 400 are respectively for implementing the corresponding processes of the terminal in the method 200 shown in Figure 8. For the sake of brevity, they will not be repeated here.

[0441] Therefore, in an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and solving the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode.

[0442] FIG11 shows a schematic block diagram of a wireless communication device 500 according to an embodiment of the present application. As shown in FIG11 , the wireless communication device 500 includes:

[0443] The transceiver unit 510 is configured to send first information to the terminal, wherein the first information is used by the terminal to perform a first operation when a first uplink transmission fails;

[0444] The first operation includes at least one of the following:

[0445] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0446] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0447] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0448] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0449] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0450] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0451] In some embodiments, the first information includes at least one of the following: first indication information, second indication information, and third indication information;

[0452] The first indication information is used to instruct that the retransmission resource of the first uplink transmission be switched from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or the first indication information is used to instruct that the retransmission resource of the first uplink transmission be selected as a non-enhanced duplex uplink resource, or the first indication information is used to instruct that the retransmission resource of the first uplink transmission be selected as the first target uplink resource;

[0453] The second indication information is used to instruct that the transmission resource of the second uplink transmission be switched from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as a non-enhanced duplex uplink resource, or the second indication information is used to instruct that the transmission resource of the second uplink transmission be selected as the second target uplink resource;

[0454] The third indication information is used to indicate that the retransmission resource of the second uplink transmission is switched from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the uplink resource of non-enhanced duplex, or the third indication information is used to indicate that the retransmission resource of the second uplink transmission is selected as the third target uplink resource.

[0455] In some embodiments, the first information is carried by at least one of the following:

[0456] A random access response RAR used to indicate a fallback or switch from a first random access channel RACH type to a second RACH type;

[0457] Downlink control information DCI corresponding to the RAR indicating fallback or switching from the first RACH type to the second RACH type;

[0458] A specific RAR used to indicate resource switching;

[0459] A specific scheduling DCI corresponding to the RAR used to indicate resource switching;

[0460] A specific RAR that indicates the resource type;

[0461] A specific scheduling DCI corresponding to the RAR indicating the resource type;

[0462] A specific RAR used to indicate random access fallback;

[0463] A specific scheduling DCI corresponding to the RAR for indicating random access fallback;

[0464] The first uplink transmission is an uplink transmission in the first RACH type, and the second uplink transmission is an uplink transmission in the second RACH type.

[0465] In some embodiments, the RAR associated with the first information includes at least one of the following: RAR type information, timing advance TA information, identification information of the random access code detected by the network side, reference signal information associated with the physical random access channel PRACH in the first RACH type, and a random access code identifier indicating that the random access code in the first RACH type needs to be used for retransmission.

[0466] In some embodiments, the first RACH type is two-step random access, and the second RACH type is four-step random access.

[0467] In some embodiments, the first uplink transmission is a message A MsgA physical uplink shared channel PUSCH in a two-step random access;

[0468] The second uplink transmission is message 3Msg3 PUSCH in four-step random access.

[0469] In some embodiments, the first information is carried by at least one of the following:

[0470] A response message for indicating a fallback from a first cell handover type or a switch to a second cell handover type;

[0471] A scheduling DCI corresponding to a response message indicating fallback from a first cell handover type or handover to a second cell handover type;

[0472] A specific response message for indicating resource switching;

[0473] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0474] A specific response message indicating the resource type;

[0475] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0476] A specific response message for indicating cell handover fallback;

[0477] A specific scheduling DCI corresponding to a response message indicating cell handover fallback;

[0478] A specific response message for scheduling uplink retransmission in the first cell handover type;

[0479] A specific scheduling DCI corresponding to a response message for scheduling uplink retransmission in the first cell handover type;

[0480] The first uplink transmission is an uplink transmission in the first cell handover type, and the second uplink transmission is an uplink transmission in the second cell handover type.

[0481] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the first cell switching type.

[0482] In some embodiments, the first cell handover type is a cell handover without random access, and the second cell handover type is a cell handover based on random access.

[0483] In some embodiments, the first uplink transmission is a PUSCH in a cell handover without random access;

[0484] The second uplink transmission is at least one of the following: message 1 Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, and MsgA PUSCH in two-step random access.

[0485] In some embodiments, the first information is carried by at least one of the following:

[0486] A response message for indicating a fallback from the third RACH type or a switch to the fourth RACH type;

[0487] A scheduling DCI corresponding to a response message indicating fallback or switching from the third RACH type to the fourth RACH type;

[0488] A specific response message for indicating resource switching;

[0489] A specific scheduling DCI corresponding to a response message indicating resource switching;

[0490] A specific response message indicating the resource type;

[0491] A specific scheduling DCI corresponding to the response message indicating the resource type;

[0492] A specific response message for indicating random access fallback;

[0493] A specific scheduling DCI corresponding to a response message indicating random access fallback;

[0494] The first uplink transmission is an uplink transmission in the third RACH type, and the second uplink transmission is an uplink transmission in the fourth RACH type.

[0495] In some embodiments, the response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with uplink transmission in the third RACH type.

[0496] In some embodiments, the third RACH type is contention-free random access (CFRA), and the fourth RACH type is contention-based random access (CBRA).

[0497] In some embodiments, the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA;

[0498] The second uplink transmission is at least one of the following: Msg1 PRACH in CBRA, MsgA PRACH in CBRA, and MsgA PUSCH in CBRA.

[0499] In some embodiments, the transceiver unit 510 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip.

[0500] It should be understood that the wireless communication device 500 according to the embodiment of the present application may correspond to the network side device in the method embodiment of the present application, and the various units in the wireless communication device 500 are respectively for implementing the corresponding processes of the network side device in the method 300 shown in Figure 9. For the sake of brevity, they will not be repeated here.

[0501] Therefore, in an embodiment of the present application, in the enhanced duplex mode, when the first uplink transmission fails, the terminal can perform the first operation, thereby improving the reliability of the uplink transmission and reducing the delay of the uplink transmission, and solving the problem of poor uplink transmission resource type initially selected in the enhanced duplex mode.

[0502] The wireless communication device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal or a network-side device, or can be a device other than a terminal or a network-side device. For example, the terminal can include but is not limited to the types of terminals 11 listed above, the network-side device can include but is not limited to the types of network-side devices 12 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0503] The wireless communication device provided in the embodiment of the present application can implement the various processes implemented in the method embodiment of Figure 8 or Figure 9 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0504] As shown in FIG12 , an embodiment of the present application further provides a communication device 600 , including a processor 601 and a memory 602 , where the memory 602 stores programs or instructions that can be run on the processor 601 .

[0505] For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps performed by the terminal in the above-mentioned wireless communication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0506] For another example, when the communication device 600 is a network side device, the program or instruction is executed by the processor 601 to implement the various steps performed by the network side device in the above-mentioned wireless communication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0507] The present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the terminal in the method embodiment shown in FIG8 . This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, FIG13 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0508] The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of the processor 710.

[0509] Those skilled in the art will appreciate that the terminal 700 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 710 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 13 does not constitute a limitation of the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.

[0510] It should be understood that in an embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0511] In the embodiment of the present application, after receiving downlink data from a network-side device, the radio frequency unit 701 may transmit the data to the processor 710 for processing. Furthermore, the radio frequency unit 701 may send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0512] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0513] Processor 710 may include at least one processing unit. Optionally, processor 710 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 710.

[0514] Wherein, in the case where the first uplink transmission fails, the processor 710 is configured to perform a first operation;

[0515] The first operation includes at least one of the following:

[0516] Switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0517] After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource designated by the network side;

[0518] Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side;

[0519] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching a transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource designated by the network side;

[0520] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side;

[0521] After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the failure of the second uplink transmission is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from the uplink resources of the enhanced duplex to the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the uplink resources of the non-enhanced duplex, or the retransmission resources of the second uplink transmission are selected as the third target uplink resources specified by the network side.

[0522] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described here.

[0523] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps performed by the network-side device in the method embodiment shown in FIG9 . This network-side device embodiment corresponds to the aforementioned network-side device method embodiment, and each implementation process and implementation method of the aforementioned method embodiment are applicable to this network-side device embodiment and can achieve the same technical effects. For the sake of brevity, they are not further described here.

[0524] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 14, the network-side device 800 includes an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. Antenna 81 is connected to radio frequency device 82. In the uplink direction, radio frequency device 82 receives information via antenna 81 and sends the received information to baseband device 83 for processing. In the downlink direction, baseband device 83 processes the information to be transmitted and sends it to radio frequency device 82. Radio frequency device 82 processes the received information and then sends it through antenna 81.

[0525] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83 , which includes a baseband processor.

[0526] The baseband device 83 may include, for example, at least one baseband board, on which at least two chips are arranged, as shown in Figure 20, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the program in the memory 85 to execute the network device operations shown in the above method embodiment.

[0527] The network side device may further include a network interface 86, which is, for example, a Common Public Radio Interface (CPRI).

[0528] Specifically, the network side device 800 of the embodiment of the present application also includes: instructions or programs stored in the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the method executed by each unit shown in FIG11 and achieve the same technical effect. To avoid repetition, it will not be described here.

[0529] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned wireless communication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0530] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0531] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned wireless communication method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0532] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0533] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned wireless communication method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0534] An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps performed by the terminal in the wireless communication method as described above, and the network side device can be used to execute the steps performed by the network side device in the wireless communication method as described above.

[0535] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0536] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0537] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A wireless communication method, wherein, Including: When a first uplink transmission fails, the terminal performs a first operation; Wherein, the first operation includes at least one of the following: Switching the retransmission resource of the first uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; Performing a second uplink transmission, and switching the transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching the transmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as a second target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the second uplink transmission fails, switching the retransmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as a third target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and after the number of retransmissions after the second uplink transmission fails is greater than or equal to a third threshold, switching the retransmission resource of the second uplink transmission from an enhanced duplex uplink resource to a non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as a non-enhanced duplex uplink resource, or selecting the retransmission resource of the second uplink transmission as a third target uplink resource specified by the network side.

2. The method according to claim 1, wherein, Before the terminal performs the first operation, the method further includes: The terminal receives first information from a network side device, wherein the first information includes at least one of the following: first indication information, second indication information, third indication information; Wherein, the first indication information is used to indicate switching the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or, the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as the uplink resource of non-enhanced duplex, or, the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as the first target uplink resource; Wherein, the second indication information is used to indicate switching the transmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or, the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or, the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as the second target uplink resource; Wherein, the third indication information is used to indicate switching the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or, the third indication information is used to indicate selecting the retransmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or, the third indication information is used to indicate selecting the retransmission resource of the second uplink transmission as the third target uplink resource.

3. The method according to claim 2, wherein, The first information is carried by at least one of the following: A random access response (RAR) for indicating fallback or switching from a first random access channel (RACH) type to a second RACH type; The scheduling downlink control information (DCI) corresponding to the RAR for indicating fallback or switching from a first RACH type to a second RACH type; A specific RAR for indicating resource switching; The scheduling DCI corresponding to the specific RAR for indicating resource switching; A specific RAR for indicating resource type; The scheduling DCI corresponding to the specific RAR for indicating resource type; A specific RAR for indicating random access fallback; The scheduling DCI corresponding to the specific RAR for indicating random access fallback; Wherein, the first uplink transmission is the uplink transmission in the first RACH type, and the second uplink transmission is the uplink transmission in the second RACH type.

4. The method according to claim 3, wherein, The RAR associated with the first information includes at least one of the following: the type information of the RAR, the timing advance (TA) information, the identification information of the random access code detected by the network side, the reference signal information associated with the physical random access channel (PRACH) in the first RACH type, the random access code identification indicating the random access code retransmission required in the first RACH type.

5. The method according to claim 3 or 4, wherein, The first RACH type is two-step random access, and the second RACH type is four-step random access.

6. The method according to any one of claims 1 to 5, wherein, The first uplink transmission is the message A (MsgA) physical uplink shared channel (PUSCH) in two-step random access; The second uplink transmission is Message 3 Msg3 PUSCH in the four-step random access.

7. According to the method of claim 2, wherein, The first information is carried by at least one of the following: A response message for indicating fallback from the first cell handover type or handover to the second cell handover type; The scheduling DCI corresponding to the response message for indicating fallback from the first cell handover type or handover to the second cell handover type; A specific response message for indicating resource handover; The scheduling DCI corresponding to the specific response message for indicating resource handover; A specific response message for indicating resource type; The scheduling DCI corresponding to the specific response message for indicating resource type; A specific response message for indicating cell handover fallback; The scheduling DCI corresponding to the specific response message for indicating cell handover fallback; A specific response message for scheduling uplink retransmission in the first cell handover type; The scheduling DCI corresponding to the specific response message for scheduling uplink retransmission in the first cell handover type; Wherein, the first uplink transmission is the uplink transmission in the first cell handover type, and the second uplink transmission is the uplink transmission in the second cell handover type.

8. According to the method of claim 7, wherein, The response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with the uplink transmission in the first cell handover type.

9. According to the method of claim 7 or 8, wherein, The first cell handover type is cell handover without random access, and the second cell handover type is cell handover based on random access.

10. According to the method of claim 1, 2, 7, 8 or 9, wherein, The first uplink transmission is PUSCH in cell handover without random access; The second uplink transmission is at least one of the following: Message 1 Msg1 PRACH in the four-step random access, MsgA PRACH in the two-step random access, MsgA PUSCH in the two-step random access.

11. According to the method of claim 2, wherein, The first information is carried by at least one of the following: A response message for indicating fallback from the third RACH type or handover to the fourth RACH type; The scheduling DCI corresponding to the response message for indicating fallback from the third RACH type or handover to the fourth RACH type; A specific response message for indicating resource handover; The scheduling DCI corresponding to the specific response message for indicating resource handover; A specific response message for indicating resource type; The scheduling DCI corresponding to the specific response message for indicating resource type; A specific response message for indicating random access fallback; The scheduling DCI corresponding to the specific response message for indicating random access fallback; Wherein, the first uplink transmission is the uplink transmission in the third RACH type, and the second uplink transmission is the uplink transmission in the fourth RACH type.

12. According to the method of claim 11, wherein, The response message associated with the first information includes at least one of the following: type information of the response message, TA information, and reference signal information associated with the uplink transmission in the third RACH type.

13. The method according to claim 11 or 12, wherein the third RACH type is contention-free random access CFRA, and the fourth RACH type is contention-based random access CBRA.

14. The method according to claim 1, 2, 11, 12 or 13, wherein the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA; the second uplink transmission is at least one of the following: Msg1 PRACH in CBRA, MsgA PRACH in CBRA, MsgA PUSCH in CBRA.

15. A wireless communication method, wherein, including: The network side device sends first information to the terminal, where the first information is used for the terminal to perform a first operation in case of a failure of the first uplink transmission; wherein the first operation includes at least one of the following: switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource specified by the network side; after the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the non-enhanced duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as the first target uplink resource specified by the network side; performing a second uplink transmission, and switching the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side; after the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, performing a second uplink transmission, and switching the transmission resource of the second uplink transmission from the enhanced duplex uplink resource to the non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as the non-enhanced duplex uplink resource, or selecting the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the second uplink transmission fails, the retransmission resources of the second uplink transmission are switched from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or the retransmission resources of the second uplink transmission are selected as non-enhanced duplex uplink resources, or the retransmission resources of the second uplink transmission are selected as a third target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, a second uplink transmission is performed, and after the number of retransmissions after the second uplink transmission fails is greater than or equal to a third threshold, the retransmission resources of the second uplink transmission are switched from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or the retransmission resources of the second uplink transmission are selected as non-enhanced duplex uplink resources, or the retransmission resources of the second uplink transmission are selected as a third target uplink resource specified by the network side.

16. The method according to claim 15, wherein The first information includes at least one of the following: first indication information, second indication information, third indication information; Wherein, the first indication information is used to indicate switching the retransmission resources of the first uplink transmission from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or the first indication information is used to indicate selecting the retransmission resources of the first uplink transmission as non-enhanced duplex uplink resources, or the first indication information is used to indicate selecting the retransmission resources of the first uplink transmission as the first target uplink resource; Wherein, the second indication information is used to indicate switching the transmission resources of the second uplink transmission from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or the second indication information is used to indicate selecting the transmission resources of the second uplink transmission as non-enhanced duplex uplink resources, or the second indication information is used to indicate selecting the transmission resources of the second uplink transmission as the second target uplink resource; Wherein, the third indication information is used to indicate switching the retransmission resources of the second uplink transmission from enhanced duplex uplink resources to non-enhanced duplex uplink resources, or the third indication information is used to indicate selecting the retransmission resources of the second uplink transmission as non-enhanced duplex uplink resources, or the third indication information is used to indicate selecting the retransmission resources of the second uplink transmission as the third target uplink resource.

17. The method according to claim 16, wherein The first information is carried by at least one of the following: A random access response (RAR) for indicating fallback or switching from a first random access channel (RACH) type to a second RACH type; A scheduling downlink control information (DCI) corresponding to the RAR for indicating fallback or switching from a first RACH type to a second RACH type; A specific RAR for indicating resource switching; A scheduling DCI corresponding to the specific RAR for indicating resource switching; A specific RAR for indicating resource type; A scheduling DCI corresponding to the specific RAR for indicating resource type; A specific RAR for indicating random access backoff; The scheduling DCI corresponding to the specific RAR for indicating random access backoff; Wherein, the first uplink transmission is the uplink transmission in the first RACH type, and the second uplink transmission is the uplink transmission in the second RACH type.

18. The method according to claim 17, wherein, The RAR associated with the first information includes at least one of the following: the type information of the RAR, the timing advance TA information, the identification information of the random access code detected by the network side, the reference signal information associated with the physical random access channel PRACH in the first RACH type, and the random access code identification indicating the random access code retransmission required in the first RACH type.

19. The method according to claim 17 or 18, wherein, The first RACH type is two-step random access, and the second RACH type is four-step random access.

20. The method according to any one of claims 15 to 19, wherein, The first uplink transmission is the message A MsgA physical uplink shared channel PUSCH in two-step random access; The second uplink transmission is the message 3 Msg3 PUSCH in four-step random access.

21. The method according to claim 16, wherein, The first information is carried by at least one of the following: A response message for indicating fallback from the first cell handover type or handover to the second cell handover type; The scheduling DCI corresponding to the response message for indicating fallback from the first cell handover type or handover to the second cell handover type; A specific response message for indicating resource handover; The scheduling DCI corresponding to the specific response message for indicating resource handover; A specific response message for indicating resource type; The scheduling DCI corresponding to the specific response message for indicating resource type; A specific response message for indicating cell handover fallback; The scheduling DCI corresponding to the specific response message for indicating cell handover fallback; A specific response message for scheduling uplink retransmission in the first cell handover type; The scheduling DCI corresponding to the specific response message for scheduling uplink retransmission in the first cell handover type; Wherein, the first uplink transmission is the uplink transmission in the first cell handover type, and the second uplink transmission is the uplink transmission in the second cell handover type.

22. The method according to claim 21, wherein, The response message associated with the first information includes at least one of the following: the type information of the response message, the TA information, and the reference signal information associated with the uplink transmission in the first cell handover type.

23. The method according to claim 21 or 22, wherein, The first cell handover type is cell handover without random access, and the second cell handover type is cell handover based on random access.

24. The method according to claims 15, 16, 21, 22 or 23, wherein, The first uplink transmission is the PUSCH in cell handover without random access; The second uplink transmission is at least one of the following: Msg1 PRACH in four-step random access, MsgA PRACH in two-step random access, MsgA PUSCH in two-step random access.

25. The method according to claim 16, wherein the first information is carried by at least one of the following: a response message for indicating fallback or handover from a third RACH type to a fourth RACH type; a scheduling DCI corresponding to the response message for indicating fallback or handover from a third RACH type to a fourth RACH type; a specific response message for indicating resource handover; a scheduling DCI corresponding to the specific response message for indicating resource handover; a specific response message for indicating resource type; a scheduling DCI corresponding to the specific response message for indicating resource type; a specific response message for indicating random access fallback; a scheduling DCI corresponding to the specific response message for indicating random access fallback; wherein the first uplink transmission is an uplink transmission in the third RACH type, and the second uplink transmission is an uplink transmission in the fourth RACH type.

26. The method according to claim 25, wherein the response message associated with the first information includes at least one of the following: type information of the response message, TA information, reference signal information associated with the uplink transmission in the third RACH type.

27. The method according to claim 25 or 26, wherein the third RACH type is contention-free random access (CFRA), and the fourth RACH type is contention-based random access (CBRA).

28. The method according to claim 15, 16, 25, 26 or 27, wherein the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA; the second uplink transmission is at least one of the following: Msg1 PRACH in CBRA, MsgA PRACH in CBRA, MsgA PUSCH in CBRA.

29. A wireless communication device, wherein, comprising: a processing unit; in the case of failure of the first uplink transmission, the processing unit is configured to perform a first operation; wherein the first operation includes at least one of the following: switching the retransmission resource of the first uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a non-enhanced-duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; after the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a non-enhanced-duplex uplink resource, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; Perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or select the transmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side; After the retransmission times of the first uplink transmission are greater than or equal to a second threshold, perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or select the transmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or select the transmission resource of the second uplink transmission as the second target uplink resource specified by the network side; After the retransmission times of the first uplink transmission are greater than or equal to a second threshold, perform a second uplink transmission, and after the second uplink transmission fails, switch the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or select the retransmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or select the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side; After the retransmission times of the first uplink transmission are greater than or equal to a second threshold, perform a second uplink transmission, and after the retransmission times after the second uplink transmission fails are greater than or equal to a third threshold, switch the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or select the retransmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or select the retransmission resource of the second uplink transmission as the third target uplink resource specified by the network side.

30. The apparatus according to claim 29, wherein, Before the wireless communication device performs the first operation, the wireless communication device further includes: A transceiver unit, configured to receive first information from a network side device, where the first information includes at least one of the following: first indication information, second indication information, and third indication information; Wherein, the first indication information is used to indicate switching the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as the uplink resource of non-enhanced duplex, or the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as the first target uplink resource; Wherein, the second indication information is used to indicate switching the transmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as the second target uplink resource; Wherein, the third indication information is used to indicate to switch the retransmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or the third indication information is used to indicate to select the retransmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or the third indication information is used to indicate to select the retransmission resource of the second uplink transmission as the third target uplink resource.

31. The apparatus according to claim 29 or 30, wherein the first uplink transmission is a Message A (MsgA) Physical Uplink Shared Channel (PUSCH) in a two-step random access; the second uplink transmission is a Message 3 (Msg3) PUSCH in a four-step random access.

32. The apparatus according to claim 29 or 30, wherein the first uplink transmission is a PUSCH in a cell handover without random access; the second uplink transmission is at least one of the following: a Message 1 (Msg1) Physical Random Access Channel (PRACH) in a four-step random access, a MsgA PRACH in a two-step random access, and a MsgA PUSCH in a two-step random access.

33. The apparatus according to claim 29 or 30, wherein the first uplink transmission is at least one of the following: a Msg1 PRACH in a CFRA, a MsgA PRACH in a CFRA, and a MsgA PUSCH in a CFRA; the second uplink transmission is at least one of the following: a Msg1 PRACH in a CBRA, a MsgA PRACH in a CBRA, and a MsgA PUSCH in a CBRA.

34. A wireless communication device, wherein, Comprising: a transceiver unit, configured to send first information to a terminal, wherein the first information is used for the terminal to perform a first operation when a first uplink transmission fails; wherein the first operation comprises at least one of the following: switching the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or selecting the retransmission resource of the first uplink transmission as the uplink resource of non-enhanced duplex, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; after the number of retransmissions of the first uplink transmission is greater than or equal to a first threshold, switching the retransmission resource of the first uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or selecting the retransmission resource of the first uplink transmission as the uplink resource of non-enhanced duplex, or selecting the retransmission resource of the first uplink transmission as a first target uplink resource specified by the network side; performing a second uplink transmission, and switching the transmission resource of the second uplink transmission from the uplink resource of enhanced duplex to the uplink resource of non-enhanced duplex, or selecting the transmission resource of the second uplink transmission as the uplink resource of non-enhanced duplex, or selecting the transmission resource of the second uplink transmission as a second target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, perform a second uplink transmission, and switch the transmission resource of the second uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or select the transmission resource of the second uplink transmission as a non-enhanced-duplex uplink resource, or select the transmission resource of the second uplink transmission as a second target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, perform a second uplink transmission, and after the second uplink transmission fails, switch the retransmission resource of the second uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or select the retransmission resource of the second uplink transmission as a non-enhanced-duplex uplink resource, or select the retransmission resource of the second uplink transmission as a third target uplink resource specified by the network side; After the number of retransmissions of the first uplink transmission is greater than or equal to a second threshold, perform a second uplink transmission, and after the number of retransmissions after the second uplink transmission fails is greater than or equal to a third threshold, switch the retransmission resource of the second uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or select the retransmission resource of the second uplink transmission as a non-enhanced-duplex uplink resource, or select the retransmission resource of the second uplink transmission as a third target uplink resource specified by the network side.

35. The apparatus according to claim 34, wherein, The first information includes at least one of the following: first indication information, second indication information, third indication information; Wherein, the first indication information is used to indicate switching the retransmission resource of the first uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as a non-enhanced-duplex uplink resource, or the first indication information is used to indicate selecting the retransmission resource of the first uplink transmission as the first target uplink resource; Wherein, the second indication information is used to indicate switching the transmission resource of the second uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as a non-enhanced-duplex uplink resource, or the second indication information is used to indicate selecting the transmission resource of the second uplink transmission as the second target uplink resource; Wherein, the third indication information is used to indicate switching the retransmission resource of the second uplink transmission from an enhanced-duplex uplink resource to a non-enhanced-duplex uplink resource, or the third indication information is used to indicate selecting the retransmission resource of the second uplink transmission as a non-enhanced-duplex uplink resource, or the third indication information is used to indicate selecting the retransmission resource of the second uplink transmission as the third target uplink resource.

36. The apparatus according to claim 34 or 35, wherein, The first uplink transmission is a Physical Uplink Shared Channel (PUSCH) of Message A (MsgA) in two-step random access; The second uplink transmission is Message 3 Msg3 PUSCH in a four-step random access.

37. The apparatus according to claim 34 or 35, wherein the first uplink transmission is PUSCH in a cell handover without random access; the second uplink transmission is at least one of the following: Message 1 Msg1 PRACH in a four-step random access, MsgA PRACH in a two-step random access, MsgA PUSCH in a two-step random access.

38. The apparatus according to claim 34 or 35, wherein the first uplink transmission is at least one of the following: Msg1 PRACH in CFRA, MsgA PRACH in CFRA, MsgA PUSCH in CFRA; the second uplink transmission is at least one of the following: Msg1 PRACH in CBRA, MsgA PRACH in CBRA, MsgA PUSCH in CBRA.

39. A terminal, wherein, Comprising a transceiver, a processor and a memory, the memory stores a program or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the wireless communication method according to any one of claims 1 to 14 are implemented.

40. A network-side device, wherein, Comprising a transceiver, a processor and a memory, the memory stores a program or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the wireless communication method according to any one of claims 15 to 28 are implemented.

41. A readable storage medium, wherein, A program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the steps of the wireless communication method according to any one of claims 1-14 are implemented, or the steps of the wireless communication method according to any one of claims 15 to 28 are implemented.

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