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WO2023050181A1 - 无线通信方法及无线通信装置 - Google Patents

无线通信方法及无线通信装置 Download PDF

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Publication number
WO2023050181A1
WO2023050181A1 PCT/CN2021/121791 CN2021121791W WO2023050181A1 WO 2023050181 A1 WO2023050181 A1 WO 2023050181A1 CN 2021121791 W CN2021121791 W CN 2021121791W WO 2023050181 A1 WO2023050181 A1 WO 2023050181A1
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WIPO (PCT)
Prior art keywords
configuration
terminal device
access capability
wireless access
resources
Prior art date
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Ceased
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PCT/CN2021/121791
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English (en)
French (fr)
Inventor
王玲萍
戴振华
徐恒书
张亮亮
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2021/121791 priority Critical patent/WO2023050181A1/zh
Priority to CN202180101149.7A priority patent/CN117751623A/zh
Publication of WO2023050181A1 publication Critical patent/WO2023050181A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present application relates to the field of wireless communication, and more specifically, to a wireless communication method and a wireless communication device.
  • the terminal device has data transmission with the source network device (or source cell) and the target network device (or target cell) within a period of time.
  • the terminal device and the source network device perform data transmission based on the configuration of the source cell
  • the terminal device and the target network device perform data transmission based on the configuration of the target cell.
  • the configuration of the target cell is carried in a radio resource control (radio resource control, RRC) reconfiguration message sent by the source network device to the terminal device.
  • RRC radio resource control
  • the terminal device works based on the configuration of the source cell and the configuration of the target cell at the same time, the wireless access capability of the terminal device may be exceeded, thereby triggering RRC re-establishment, resulting in service interruption of the terminal device.
  • the present application provides a wireless communication method in order to avoid service interruption caused by the sum of the configuration of the source cell and the configuration of the target cell exceeding the wireless access capability of the terminal device.
  • a wireless communication method may include: receiving a first radio resource control (radio resource control, RRC) reconfiguration message from a network device to which the source cell belongs, the first RRC reconfiguration message includes Dual active protocol stack (dual active protocol stack, DAPS) switching command, the DAPS switching command is used to indicate switching from the source cell to the target cell, the DAPS switching command includes the first configuration used in the target cell, the first configuration does not exceed the wireless access capability; when the sum of the first configuration and the second configuration exceeds the wireless access capability, communicate with the network device to which the source cell belongs through the third configuration, or release the second configuration; the second configuration The second configuration is the configuration used in the source cell before handover, and the sum of the third configuration and the first configuration does not exceed the wireless access capability; after successfully accessing the target cell through the first configuration, the target cell The network device to which it belongs sends an RRC reconfiguration complete message.
  • the wireless access capability refers to the wireless access capability of the terminal device.
  • the terminal equipment after the terminal equipment receives the DAPS switching command included in the first RRC reconfiguration message, if it is determined that the sum of the configuration of the source cell (ie, the second configuration) and the configuration of the target cell (ie, the first configuration) exceeds the terminal equipment radio access capability, then during the handover process of the terminal device from the source cell to the target cell, the terminal device reduces the configuration of the source cell, so that the sum of the reduced configuration of the source cell (that is, the third configuration) and the configuration of the target cell is equal to The wireless access capability of the terminal equipment is exceeded, so that the terminal equipment can continue to perform DAPS handover instead of initiating RRC re-establishment, which is conducive to ensuring service continuity.
  • the terminal device after the terminal device receives the DAPS handover command included in the first RRC reconfiguration message, if it is determined that the sum of the configuration of the source cell (that is, the second configuration) and the configuration of the target cell (that is, the first configuration) exceeds the After the terminal device releases the configuration of the source cell, it will switch from the source cell to the target cell according to the configuration of the target cell, thereby avoiding service interruption caused by the terminal device initiating RRC re-establishment and ensuring service continuity.
  • the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device, which means that the sum of the configurations related to the wireless access capability of the terminal device in the first configuration and the second configuration exceeds the terminal device's wireless access capability.
  • the wireless access capability of the device includes the number of uplink radio frequency transmission channels used by the terminal device in the target cell, and the second configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the source cell.
  • the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device may mean that the sum of the number of uplink radio frequency transmission channels used by the terminal device in the target cell and the number of uplink radio frequency transmission channels used by the terminal device in the source cell exceeds that of the terminal device
  • the wireless access capability (that is, the maximum number of supported uplink radio frequency transmission channels).
  • the above-mentioned sum of the first configuration and the third configuration does not exceed the wireless access capability of the terminal device, which means that the sum of configurations related to the wireless access capability of the terminal device in the first configuration and the third configuration does not exceed the terminal device's wireless access capability.
  • the wireless access capability of the device includes the number of uplink radio frequency transmission channels used by the terminal device in the target cell, and the third configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the source cell. The sum of the first configuration and the third configuration does not exceed the wireless access capability of the terminal device.
  • the sum of the number of uplink radio frequency transmission channels used by the terminal device in the target cell and the number of uplink radio frequency transmission channels used by the terminal device in the source cell does not exceed The wireless access capability of the terminal device (that is, the maximum number of supported uplink radio frequency transmission channels).
  • the first configuration includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of sounding reference signal (sounding reference signal, SRS) resources, the number of ports of SRS resources, the number of channels The number of state information reference signal (channel state information reference signal, CSI-RS) resources and the number of ports of CSI-RS resources.
  • the second configuration includes one or more of the following: number of uplink radio frequency transmission channels, number of downlink radio frequency reception channels, number of SRS resources, number of ports of SRS resources, number of CSI-RS resources, number of ports of CSI-RS resources .
  • the third configuration includes one or more of the following: number of uplink radio frequency transmission channels, number of downlink radio frequency reception channels, number of SRS resources, number of ports of SRS resources, number of CSI-RS resources, number of ports of CSI-RS resources .
  • the method further includes: receiving a second RRC reconfiguration message, the second RRC The reconfiguration message is used to indicate to release the third configuration.
  • the second RRC reconfiguration message is sent by the network device to which the target cell belongs to the terminal device.
  • the network device to which the source cell belongs when the sum of the first configuration and the second configuration exceeds the wireless access capability, communicate with the network device to which the source cell belongs through a third configuration, or , releasing the second configuration, including: when the sum of the first configuration and the second configuration exceeds the wireless access capability, and the first configuration is lower than the wireless access capability, through the third configuration and the source The network equipment to which the cell belongs communicates.
  • a wireless communication device in a second aspect, may be a terminal device, or a component in the terminal device.
  • the wireless communication device may include various modules or units configured to execute the first aspect and the method in any possible implementation manner of the first aspect.
  • a wireless communication device including a processor.
  • the processor is coupled with the memory, and can be used to execute instructions in the memory, so as to implement the method in the above first aspect and any possible implementation manner of the first aspect.
  • the wireless communication device further includes a memory.
  • the wireless communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the wireless communication device is a terminal device.
  • the communication interface may be a transceiver, or an input/output interface.
  • the wireless communication device is a chip configured in a terminal device.
  • the communication interface may be an input/output interface.
  • the transceiver may be a transceiver circuit.
  • the input/output interface may be an input/output circuit.
  • a wireless communication device including a processing circuit and an interface circuit.
  • the interface circuit is used to couple with the memory outside the wireless communication device, and provides a communication interface for the processing circuit to access the memory; the processing circuit is used to execute the program instructions in the memory, so as to realize the above-mentioned first aspect and the first aspect A method in any of the possible implementations.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation manner of the first aspect.
  • the above-mentioned processor can be one or more chips
  • the input circuit can be an input pin
  • the output circuit can be an output pin
  • the processing circuit can be a transistor, a gate circuit, a flip-flop and various logic circuits, etc. .
  • the input signal received by the input circuit may be received and input by, for example but not limited to, the receiver
  • the output signal of the output circuit may be, for example but not limited to, output to the transmitter and transmitted by the transmitter
  • the circuit may be the same circuit, which is used as an input circuit and an output circuit respectively at different times.
  • the embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and may receive signals through the receiver and transmit signals through the transmitter, so as to execute the method in any possible implementation manner of the first aspect.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory may be set separately from the processor.
  • the memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be respectively arranged in different On the chip, the embodiment of the present application does not limit the type of the memory and the configuration of the memory and the processor.
  • a non-transitory memory such as a read-only memory (read only memory, ROM)
  • ROM read only memory
  • a related data interaction process such as sending indication information may be a process of outputting indication information from a processor
  • receiving capability information may be a process of receiving input capability information from a processor.
  • the data output by the processor may be output to the transmitter, and the input data received by the processor may be from the receiver.
  • the transmitter and the receiver may be collectively referred to as a transceiver.
  • the processing device in the sixth aspect above may be one or more chips.
  • the processor in the processing device may be implemented by hardware or by software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in a memory, which can Integrated in a processor, it can exist independently of that processor.
  • a computer program product includes: a computer program (also referred to as code, or an instruction), which, when the computer program is executed, causes the computer to perform any of the above-mentioned first aspects.
  • a computer program also referred to as code, or an instruction
  • a computer-readable storage medium stores a computer program (also referred to as code, or instruction) when it is run on a computer, so that any of the above-mentioned first aspects A method in one possible implementation is executed.
  • FIG. 1 is a schematic diagram of a communication system applicable to the wireless communication method provided by the embodiment of the present application;
  • FIG. 2 shows a schematic flowchart of a wireless communication method provided by an embodiment of the present application
  • FIG. 3 shows a schematic flowchart of a wireless communication method provided by an embodiment of the present application
  • FIG. 4 shows a schematic diagram of a wireless communication device provided by an embodiment of the present application
  • Fig. 5 shows a schematic block diagram of a wireless communication device provided by another embodiment of the present application.
  • FIG. 6 shows a schematic diagram of a chip system provided by an embodiment of the present application.
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • 5G Fifth Generation
  • NR New Wireless Access Technology
  • V2X can include vehicle to Internet (vehicle to network, V2N), vehicle to vehicle (vehicle to vehicle, V2V), vehicle to basic Facilities (vehicle to infrastructure, V2I), vehicle to pedestrian (vehicle to pedestrian, V2P), etc.
  • long term evolution-vehicle (LTE-V) vehicle networking, machine type communication (MTC) ), Internet of things (IoT), long term evolution-machine (LTE-M), machine to machine (
  • the network device may be any device with a wireless transceiver function.
  • the equipment includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC) , base transceiver station (base transceiver station, BTS), home base station (for example, home evolved Node B, or home Node B, HNB), baseband unit (baseband unit, BBU), access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or transmission and reception point (transmission and reception, TRP), etc.
  • 5G such as gNB in NR system, or, transmission Point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of a base station in a 5G system, or, it can also be a network node that constitutes a gNode B, eNB),
  • a gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include an active antenna unit (AAU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB.
  • CU is responsible for processing non-real-time protocols and services, realizing radio resource control (radio resource control, RRC), service data adaptation protocol stack (service data adaptation protocol, SDAP) ) protocol layer, the function of packet data convergence protocol (PDCP) layer.
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, medium access control (medium access control, MAC) layer and physical (physical, PHY) layer.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services, realizing the functions of the radio link control (radio link control, RLC) layer, medium access control (medi
  • the AAU implements some physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , or, sent by DU+AAU.
  • the network device may be a device including one or more of a CU node, a DU node, and an AAU node.
  • the CU can be divided into network devices in an access network (radio access network, RAN), and the CU can also be divided into network devices in a core network (core network, CN), which is not limited in this application.
  • the functions of the CU entity can be implemented by one or more entities.
  • the functions of the CU entity can be further divided, for example, the functions of the control plane (control plane, CP) and the functions of the user plane (user plane, UP) can be separated, that is, the CU entity includes the control plane of the CU (CU- CP) entity and CU user plane (CU-UP) entity, the CU-CP entity and CU-UP entity can be coupled with the DU entity to jointly complete the functions of the network device.
  • the CU-CP entity is responsible for the control plane function, mainly including the RRC protocol layer and the PDCP control plane (PDCP control plane, PDCP-C) protocol layer.
  • the PDCP-C protocol layer is mainly responsible for encryption and decryption of data on the control plane, integrity protection, and data transmission.
  • the CU-UP entity is responsible for user plane functions, mainly including SDAP protocol layer and PDCP user plane (PDCP user plane, PDCP-U) protocol layer.
  • the SDAP protocol layer is mainly responsible for mapping the data flow (flow) of the core network to the bearer.
  • the PDCP-U protocol layer is mainly responsible for encryption and decryption of the data plane, integrity protection, header compression, serial number maintenance, data transmission, etc.
  • the network device provides services for the cell, and the terminal device communicates with the cell through transmission resources (eg, frequency domain resources, or spectrum resources) allocated by the network device.
  • the cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: a metro cell, a micro cell , pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the terminal equipment includes user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile terminal, user terminal, terminal, wireless Communication Device, User Agent, or User Device.
  • the terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal device , wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security safety), wireless terminals in smart city, wireless terminals in smart home, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop Road (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, 5G network
  • wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories.
  • Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smartphones, such as: smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the terminal device may also be a terminal device in an Internet of Things (Internet of things, IoT) system.
  • IoT Internet of things
  • Its main technical feature is to connect objects with the network through communication technology, so as to realize the intelligent network of man-machine interconnection and object interconnection.
  • This application does not limit the specific form of the terminal device.
  • Fig. 1 shows a schematic diagram of a communication system applicable to a wireless communication method and a wireless communication device according to an embodiment of the present application.
  • the communication system 100 may include at least two network devices, such as the network device 110 and the network device 120 shown in Figure 1; the communication system 100 may also include at least one terminal device, such as the terminal device shown in Figure 1 130. Wherein, the terminal device 130 may be mobile or fixed.
  • Both the network device 110 and the network device 120 are devices capable of communicating with the terminal device 130 through a wireless link, such as a base station or a base station controller.
  • Each network device can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area (cell).
  • Figure 1 exemplarily shows two network devices and one terminal device.
  • the communication system 100 may include at least one network device and other numbers of terminal devices may be included within the coverage of each network device. Examples are not limited to this.
  • Each of the aforementioned communication devices may be configured with multiple antennas.
  • the plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals.
  • each communication device additionally includes a transmitter chain and a receiver chain, and those of ordinary skill in the art can understand that they all include a plurality of components related to signal transmission and reception (such as processors, modulators, multiplexers, etc.) , demodulator, demultiplexer or antenna, etc.). Therefore, the network device and the terminal device can communicate through the multi-antenna technology.
  • the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, to which this embodiment of the present application is not limited.
  • network entities such as a network controller and a mobility management entity, to which this embodiment of the present application is not limited.
  • RRC re-establishment When handover failure, reconfiguration failure, integrity detection failure, radio link failure (radio link failure, RLF) and other situations occur in the terminal device, the terminal device can initiate the RRC re-establishment process.
  • RLF radio link failure
  • the RRC re-establishment process may include the following steps:
  • Step 1 The terminal device sends an RRC re-establishment request message to the re-established cell (or the network device to which the re-established cell belongs).
  • Step 2 Re-establishing the cell allows the request of the terminal equipment, and then sends an RRC re-establishment message to the terminal equipment.
  • Step 3 The terminal device sends an RRC re-establishment complete message to the re-established cell.
  • the re-established cell here may be a cell determined by the terminal device through cell search or detection.
  • a re-established cell may be a cell that satisfies predetermined criteria.
  • predetermined criteria such as the cell selection S criterion in NR protocol technical specification (technical specification, TS) 38.304-f30.
  • the source cell means the cell that provides service for the terminal device before the handover
  • the target cell means the cell that provides service for the terminal device after the handover.
  • the relevant information of the target cell (such as the physical cell identifier (PCI) of the target cell, frequency information, random access resource information required for handover to the target cell, etc.) can be indicated through the RRC reconfiguration message, and the RRC reconfiguration message
  • the configuration message is sent by the network device to which the source cell belongs (ie, the source network device) to the terminal device.
  • Handover can be intra-station handover or inter-station handover.
  • Intra-site handover means that the source cell and the target cell belong to the same network device (such as a base station), where the source cell and the target cell can be the same cell or different cells;
  • inter-site handover means that the source cell and the target cell belong to different Network equipment (such as base stations). This application does not limit this.
  • a cell is a coverage area of a network device
  • a source cell corresponds to a source network device (such as a source base station)
  • a target cell corresponds to a target network device (such as a target base station).
  • DAPS handover In order to ensure zero interruption during the handover process of terminal equipment, DAPS handover is introduced in the communication industry standard.
  • the terminal device disconnects from the source cell after receiving the DAPS handover command from the source network device, and accesses the target cell.
  • the terminal device receives the DAPS handover command sent by the source network device, and then accesses the target cell.
  • the terminal device still maintains communication with the source cell link until the target
  • the network device notifies the terminal device to completely release the configuration of the source cell, and the terminal device stops communication with the source cell and releases the communication link with the source cell.
  • the DAPS switching command is carried in the RRC reconfiguration message sent by the source network device to the terminal device.
  • the handover process of DAPS is similar to the traditional handover process.
  • the source network device decides to perform the handover, and then the source network device sends a handover request to the target network device. Further, the target network device replies a handover confirmation message to the source network device, indicating to accept the handover of the terminal device to the target cell. Further, the source network device sends a DAPS switching command to the terminal device, instructing the terminal device to switch to the target cell. Then, the terminal device maintains the connection of the source cell and the target cell at the same time.
  • the core network After the terminal device successfully accesses the target cell and establishes a new connection with the core network, the core network will switch the downlink data flow to the target network device, and at the same time send an end marker data packet to the source network device. Then, the source network device forwards the data to the target network device. After the target network device receives the end marker message, the target network device can notify the terminal device to release the source cell connection, thereby completing the DAPS handover process.
  • the terminal device will stop sending new uplink data to the source network device.
  • the terminal device After the terminal device successfully releases the connection with the source cell, the terminal device stops all communications with the source network device.
  • the source network device receives a handover success indication message sent by the target network device, and thus the source network device stops sending new downlink data to the terminal device.
  • the source network device Before the terminal device successfully releases the connection with the source cell, the source network device will not send new downlink data to the terminal device, but will send retransmitted downlink data.
  • the terminal device has data transmission with the source network device (or source cell) and the target network device (or target cell) within a period of time.
  • the terminal device and the source network device perform data transmission based on the configuration of the source cell (that is, the second configuration in the following embodiments), and the terminal device and the target network device perform data transmission based on the configuration of the target cell (that is, the first configuration in the following embodiments). transmission.
  • the configuration of the target cell is carried in the RRC reconfiguration message sent by the source network device to the terminal device.
  • the terminal device works based on the configuration of the source cell and the target cell at the same time, it may exceed the radio access capability of the UE, thereby triggering RRC re-establishment, resulting in service interruption of the terminal device.
  • the present application provides a wireless communication method in order to avoid service interruption caused by the sum of the configuration of the source cell and the configuration of the target cell exceeding the wireless access capability of the UE.
  • the terminal device shown in the following embodiments may be replaced with components (such as chips or circuits) configured in the terminal device.
  • the network devices shown in the following embodiments may also be replaced with components (such as chips or circuits) configured in the network devices.
  • the embodiments shown below do not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be executed according to the method provided by the embodiment of the present application method to communicate.
  • the subject of execution of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call a program and execute the program.
  • FIG. 2 is a schematic flowchart of a method 200 provided by an embodiment of the present application from the perspective of device interaction. As shown in FIG. 2, the method 200 may include S210 to S240, each step will be described in detail below.
  • network device #1 sends a first RRC reconfiguration message.
  • the terminal device receives a first RRC reconfiguration message.
  • the network device #1 is the network device to which the source cell belongs.
  • the first RRC reconfiguration message includes a DAPS handover command, and the DAPS handover command is used to instruct the terminal equipment to handover from the source cell to the target cell.
  • the DAPS switching command is the "daps-Config-r16" information element carried in the first RRC reconfiguration (RRC reconfiguration) message.
  • the DAPS switching command includes first configuration information, where the first configuration information is used to indicate the first configuration.
  • the first configuration is the configuration used by the terminal device in the target cell, or the first configuration is the configuration used by the terminal device to communicate in the target cell, or the first configuration is the configuration provided by network device #2 for the terminal device in the target cell The configuration used for communication.
  • the network device #2 is the network device to which the target cell belongs, and the first configuration information is received by the network device #1 from the network device #2. It should be understood that the first configuration does not exceed the wireless access capability of the terminal device.
  • the first configuration information includes one or more of the following: information on the target cell (such as the PCI of the target cell and frequency information corresponding to the target cell, the cell-radio network temporary identity (cell-radio network) provided by the network device #2 for the terminal device temporary identifier, C-RNTI)), random access channel (random access channel, RACH) resource information required to access the target cell (for example, dedicated RACH resources and/or public RACH resources).
  • information on the target cell such as the PCI of the target cell and frequency information corresponding to the target cell, the cell-radio network temporary identity (cell-radio network) provided by the network device #2 for the terminal device temporary identifier, C-RNTI)
  • random access channel random access channel, RACH resource information required to access the target cell (for example, dedicated RACH resources and/or public RACH resources).
  • the first configuration information may also include more parameters, which is not limited in this embodiment of the present application.
  • the terminal device communicates with the network device #1 through the third configuration.
  • the terminal device when the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device, the terminal device communicates with the network device #1 through the third configuration. Wherein, the sum of the first configuration and the third configuration does not exceed the wireless access capability of the terminal device.
  • the terminal device communicates with the network through the third configuration Device #1 communicates. While the terminal device communicates with the network device #1 through the third configuration, after the terminal device successfully accesses the target cell, it communicates with the network device #2 through the first configuration.
  • the terminal device after the terminal device successfully accesses the target cell and before the terminal device receives the message of releasing the source cell, the terminal device has data transmission and reception between the source cell and the target cell, and the data transmission and reception are between the terminal device and the network device# 1 or non-signaling interaction of network device #2, and the user plane data sent and received by the terminal device in the source cell and the target cell are the same.
  • the sum of the first configuration and the second configuration described in this embodiment exceeds the wireless access capability of the terminal device, and refers to the configuration related to the wireless access capability of the terminal device in the first configuration and the second configuration The sum exceeds the wireless access capability of the terminal device.
  • the first configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the target cell
  • the second configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the source cell
  • the sum of the first configuration and the second configuration exceeds the radio frequency of the terminal device.
  • Access capability can mean that the sum of the number of uplink radio frequency transmission channels used by the terminal device in the target cell and the number of uplink radio frequency transmission channels used by the terminal device in the source cell exceeds the wireless access capability of the terminal device (that is, the maximum supported uplink radio frequency transmission channel number).
  • the sum of the first configuration and the third configuration described in the embodiment of this application does not exceed the wireless access capability of the terminal device, which means that the first configuration and the third configuration are related to the wireless access capability of the terminal device.
  • the sum of the configurations does not exceed the wireless access capability of the terminal device.
  • the first configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the target cell
  • the third configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the source cell
  • the sum of the first configuration and the third configuration does not exceed the number of uplink radio frequency transmission channels of the terminal device.
  • the wireless access capability can mean that the sum of the number of uplink radio frequency transmission channels used by the terminal device in the target cell and the number of uplink radio frequency transmission channels used by the terminal device in the source cell does not exceed the wireless access capability of the terminal device (that is, the maximum supported uplink radio frequency number of transmit channels).
  • the first configuration related to the wireless access capability of the terminal device includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of sounding reference signal (sounding reference signal, SRS) resources The number of ports of SRS resources, the number of channel state information reference signal (channel state information reference signal, CSI-RS) resources, and the number of ports of CSI-RS resources.
  • SRS sounding reference signal
  • the second configuration related to the wireless access capability of the terminal device includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of SRS resources, the number of ports of SRS resources, the number of CSI-RS resources number, and the number of ports of the CSI-RS resource.
  • the third configuration related to the wireless access capability of the terminal device includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of SRS resources, the number of SRS resource ports, and the number of CSI-RS resources. number, and the number of ports of the CSI-RS resource.
  • the second configuration is the configuration used by the terminal device in the source cell before the handover occurs, or the second configuration is the configuration used by the terminal device for communication in the source cell before the handover occurs.
  • the second configuration includes one or more of the following: PCI of the source cell, measurement configuration, mobile control (mobile control) configuration, radio resource configuration, access stratum (access stratum, AS) security configuration, network device #1 is a terminal device Assigned C-RNTI.
  • the radio resource configuration may be radio bearer (radio bearer, RB) configuration or medium access control (medium access control, MAC) main configuration, physical channel configuration, and the like.
  • the third configuration is the configuration used in the source cell when the terminal device performs DAPS handover. Since the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device, the sum of the first configuration and the third configuration does not exceed the wireless access capability of the terminal device. Therefore, compared with the second configuration, the configuration related to the wireless access capability of the terminal device has changed in the third configuration. Specifically, compared with the second configuration, the specification of the configuration related to the wireless access capability of the terminal device is lower in the third configuration.
  • both the third configuration and the second configuration include the number of uplink radio frequency transmission channels used by the terminal device in the source cell, and the number of uplink radio frequency channels used by the terminal device in the source cell included in the third configuration is larger than that of the terminal device included in the second configuration.
  • the number of uplink radio frequency channels used by the source cell is small.
  • the terminal device when the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device, the terminal device reduces the configuration used in the source cell from the second configuration to the third configuration, and the terminal device During the handover process from the source cell to the target cell, communicate with network device #1 through the third configuration.
  • the embodiment of the present application does not limit the timing for the terminal device to determine whether the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device.
  • the terminal device first determines whether the second configuration has fully occupied the wireless access capability of the terminal device, and if the second configuration has fully occupied the wireless access capability of the terminal device, the terminal device receives the first RRC After the DAPS switching command included in the reconfiguration message, it can be directly determined that the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device; if the second configuration does not fully occupy the wireless access capability of the terminal device, the terminal After receiving the DAPS switching command included in the first RRC reconfiguration message, the device determines whether the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device.
  • the second configuration occupies the wireless access capability of the terminal device means that when the terminal device communicates with network device #1 through the second configuration, the terminal device has no ability to support communication with other cells or network devices (such as terminal device There is no capability to support communication with network device #2 in the target cell). Conversely, the fact that the second configuration does not fully occupy the wireless access capability of the terminal device means that when the terminal device communicates with network device #1 through the second configuration, the terminal device still has the ability to support communication with other cells or network devices.
  • the terminal device supports a multi-input multi-output (MIMO) capability of three uplink radio frequency transmission channels (3T for short).
  • MIMO multi-input multi-output
  • the terminal device determines that the second configuration occupies the wireless access capability of the terminal device, and then, after receiving the DAPS switching command included in the first RRC reconfiguration message, the terminal device can directly determine the first configuration The sum of the second configuration and the second configuration exceeds the wireless access capability of the terminal device.
  • the terminal device includes two uplink radio frequency transmission channels (2T for short)
  • the terminal device determines that the second configuration does not fully occupy the wireless access capability of the terminal device.
  • the terminal device After the terminal device receives the DAPS switching command included in the first RRC reconfiguration message, it knows that the first configuration includes 2T, and the terminal device can further determine that the sum of the first configuration and the second configuration is uplink 4 radio frequency transmission channels (referred to as 4T), It exceeds the wireless access capability of the terminal device.
  • the terminal device After the terminal device receives the DAPS switching command included in the first RRC reconfiguration message, it knows that the first configuration includes 2T, and the terminal device can further determine that the sum of the first configuration and the second configuration is uplink 4 radio frequency transmission channels (referred to as 4T), It exceeds the wireless access capability of the terminal device.
  • 4T uplink 4 radio frequency transmission channels
  • the terminal device first determines whether the first configuration has fully occupied the wireless access capability of the terminal device, and if the first configuration does not fully occupy the wireless access capability of the terminal device, the terminal device then determines the first configuration and whether the sum of the second configuration exceeds the wireless access capability of the terminal device.
  • the first configuration does not fully occupy the wireless access capability of the terminal device means that when the terminal device communicates with network device #2 through the first configuration, the terminal device still has the ability to support communication with other cells or network devices.
  • the terminal equipment supports the MIMO capability of 3T.
  • the terminal device determines that the first configuration does not fully occupy the wireless access capability of the terminal device.
  • the terminal device may determine that the sum of the first configuration and the second configuration is 4T, which exceeds the wireless access capability of the terminal device.
  • the terminal device determines whether the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device.
  • the terminal device when the sum of the first specification included in the first configuration and the first specification included in the second configuration exceeds the wireless access capability of the terminal device, in the process of switching the terminal device from the source cell to the target cell , the terminal device communicates with network device #1 through the third configuration. Wherein, the sum of the first specification included in the third configuration and the first specification included in the first configuration does not exceed the wireless access capability of the terminal device.
  • the terminal device changes the first specification used in the source cell from the second configuration included
  • the first specification included in the third configuration is reduced to the first specification included in the third configuration, and during the handover process of the terminal device from the source cell to the target cell, the first specification included in the third configuration communicates with the network device #1.
  • the first specification includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of SRS resources, the number of ports of SRS resources, the number of CSI-RS resources, the number of CSI-RS The port number for the resource.
  • the first configuration includes 2T
  • the second configuration includes 2T.
  • the sum of the first configuration and the second configuration is 4T, which exceeds the wireless access capability of the terminal device, and the terminal device can reduce the number of uplink radio frequency transmission channels used in the source cell to one, that is, the third configuration includes uplink 1 radio frequency transmission channel (referred to as 1T).
  • the third configuration includes 1T
  • the sum of the first configuration and the third configuration is 3T, which does not exceed the wireless access capability of the terminal device.
  • the first configuration when the sum of the first configuration and the third configuration does not exceed the wireless access capability of the terminal device, the first configuration is lower than the wireless access capability of the terminal device. That is to say, the first configuration does not fully occupy the wireless access capability of the terminal device, so that the terminal device is still capable of supporting communication with network device #1 through the third configuration. Therefore, in S220, when the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device and the first configuration is lower than the wireless access capability of the terminal device, when the terminal device switches from the source cell to the target cell In the process, the terminal device communicates with the network device #1 through the third configuration.
  • the terminal device sends an RRC reconfiguration complete (RRC reconfiguration complete) message.
  • RRC reconfiguration complete RRC reconfiguration complete
  • network device #2 receives the RRC reconfiguration complete message.
  • the terminal device after the terminal device successfully accesses the target cell, the terminal device sends an RRC reconfiguration complete message to network device #2.
  • the terminal device receives a second RRC reconfiguration message.
  • network device #2 sends a second RRC reconfiguration message.
  • network device #2 sends a second RRC reconfiguration message to the terminal device, and the second RRC reconfiguration message is used to indicate the release of the source cell, that is, to indicate the release of the first Three configurations.
  • the terminal device after the terminal device receives the DAPS handover command included in the first RRC reconfiguration message, if it is determined that the sum of the configuration of the source cell and the configuration of the target cell exceeds the wireless access capability of the terminal device, the terminal device During the handover process from the source cell to the target cell, the terminal device reduces the configuration of the source cell so that the sum of the reduced configuration of the source cell and the configuration of the target cell does not exceed the wireless access capability of the terminal device, thereby preventing the terminal device from initiating an RRC resumption.
  • the business interruption caused by the establishment is conducive to ensuring the continuity of the business.
  • FIG. 3 is a schematic flowchart of a method 300 provided by an embodiment of the present application from the perspective of device interaction. As shown in FIG. 3, the method 300 may include S310 to S330, each step will be described in detail below.
  • network device #1 sends a first RRC reconfiguration message.
  • the terminal device receives a first RRC reconfiguration message.
  • S310 is the same as S210 in the method 200, and for the sake of brevity, this embodiment of the present application will not describe it in detail.
  • the terminal device releases the second configuration.
  • the release of the second configuration by the terminal device may be understood as the terminal device deleting the stored second configuration, or the terminal device releasing the link between the terminal device and the source cell, or the terminal device releasing the connection with the network device #1. It can be understood that after the terminal device releases the second configuration, the terminal device will not have data interaction with the network device #1 until the connection between the terminal device and the network device #1 is re-established.
  • the sum of the first configuration and the second configuration described in this embodiment exceeds the wireless access capability of the terminal device, and refers to the configuration related to the wireless access capability of the terminal device in the first configuration and the second configuration The sum exceeds the wireless access capability of the terminal device.
  • the first configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the target cell
  • the second configuration includes the number of uplink radio frequency transmission channels used by the terminal device in the source cell.
  • the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device may mean that the sum of the number of uplink radio frequency transmission channels used by the terminal device in the target cell and the number of uplink radio frequency transmission channels used by the terminal device in the source cell exceeds that of the terminal device
  • the wireless access capability (that is, the maximum number of supported uplink radio frequency transmission channels).
  • the embodiment of the present application does not limit the timing for the terminal device to determine whether the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device.
  • the terminal device first determines whether the second configuration has fully occupied the wireless access capability of the terminal device, and if the second configuration has fully occupied the wireless access capability of the terminal device, the terminal device receives the first RRC After the DAPS switching command included in the reconfiguration message, it can be directly determined that the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device; if the second configuration does not fully occupy the wireless access capability of the terminal device, the terminal After receiving the DAPS switching command included in the first RRC reconfiguration message, the device determines whether the sum of the first configuration and the second configuration exceeds the wireless access capability of the terminal device. For more related descriptions, refer to S220 above.
  • the terminal device first determines whether the first configuration has fully occupied the wireless access capability of the terminal device.
  • the sum of the configuration and the second configuration exceeds the wireless access capability of the terminal device; if the first configuration does not fully occupy the wireless access capability of the terminal device, the terminal device then determines whether the sum of the first configuration and the second configuration exceeds The wireless access capability of terminal equipment.
  • the first configuration occupies the wireless access capability of the terminal device means that when the terminal device communicates with network device #2 through the first configuration, the terminal device has no ability to support communication with other cells or network devices (such as terminal device There is no capability to support communication with network device #1 in the source cell).
  • the terminal device has no ability to support communication with other cells or network devices (such as terminal device There is no capability to support communication with network device #1 in the source cell).
  • the terminal device determines whether the sum of the first configuration and the second configuration exceeds the radio access capability of the terminal device.
  • the first specification includes one or more of the following: the number of uplink radio frequency transmission channels, the number of downlink radio frequency reception channels, the number of SRS resources, the number of ports of SRS resources, the number of CSI-RS resources, the number of CSI-RS The port number for the resource.
  • the first specification including the number of downlink radio frequency receiving channels as an example.
  • the terminal device supports the MIMO capability of 4 downlink radio frequency receiving channels (abbreviated as 4R)
  • the first configuration includes 4R
  • the second configuration includes downlink 2 radio frequency receiving channels (abbreviated as 2R).
  • the sum of the first configuration and the second configuration is 6 downlink radio frequency receiving channels (abbreviated as 6R), which exceeds the wireless access capability of the terminal device, and the terminal device releases the second configuration.
  • the terminal device sends an RRC reconfiguration complete message.
  • network device #2 receives the RRC reconfiguration complete message.
  • the terminal device After releasing the second configuration, the terminal device continues to switch from the source cell to the target cell according to the first configuration. Further, in S330, after the terminal device successfully accesses the target cell, it sends an RRC reconfiguration complete message to network device #2, and network device #2 is the network device to which the target cell belongs.
  • the terminal device after the terminal device receives the DAPS handover command included in the first RRC reconfiguration message, if it is determined that the sum of the configuration of the source cell and the configuration of the target cell exceeds the radio access capability of the terminal device, the terminal device releases the After the configuration of the source cell, switch from the source cell to the target cell according to the configuration of the target cell, so as to prevent the terminal device from initiating RRC resumption when the sum of the configuration of the source cell and the configuration of the target cell exceeds the wireless access capability of the terminal device.
  • the business interruption caused by the establishment is conducive to ensuring the continuity of the business.
  • the terminal device and/or the network device may perform some or all of the steps in the embodiments. These steps or operations are merely examples, and other operations or modifications of various operations may also be performed in the embodiment of the present application. In addition, each step may be performed in a different order presented in each embodiment, and it may not be necessary to perform all operations in the embodiment of the present application. Moreover, the sequence numbers of the steps do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.
  • the wireless communication method provided by the embodiment of the present application is described in detail with reference to FIG. 2 to FIG. 3 .
  • the wireless communication device provided by the embodiment of the present application will be described in detail with reference to FIG. 4 to FIG. 6 .
  • Fig. 4 is a schematic block diagram of a wireless communication device provided by an embodiment of the present application.
  • the communication device 1000 may include a processing unit 1100 and a transceiver unit 1200 .
  • the communication apparatus 1000 may correspond to the terminal device in the above method embodiment, for example, may be a terminal device, or a component (such as a chip or a chip system, etc.) configured in the terminal device.
  • the communication device 1000 may correspond to the terminal device in the methods 200 to 300 according to the embodiment of the present application, and the communication device 1000 may include a terminal device for performing the method 200 in FIG. 2 or the method 300 in FIG. 3 The unit of method to execute. Moreover, each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding flow of the method 200 in FIG. 2 or the method 300 in FIG. 3 . It should be understood that the specific process for each unit to perform the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, details are not repeated here.
  • the transceiver unit 1200 in the communication device 1000 can be implemented through an input/output interface, and the processing unit 1100 in the communication device 1000 can be implemented through the chip or chip Implementations such as processors, microprocessors, or integrated circuits integrated on a system.
  • the communication apparatus 1000 may correspond to the network device in the above method embodiment, for example, may be a network device, or a component (such as a chip or a chip system, etc.) configured in the network device.
  • the communication device 1000 may correspond to network device #1 in the methods 200 to 300 according to the embodiments of the present application, and the communication device 1000 may include a Elements of the method performed by network device #1.
  • each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding flow of the method 200 in FIG. 2 or the method 300 in FIG. 3 . It should be understood that the specific process for each unit to perform the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, details are not repeated here.
  • the communication device 1000 may correspond to the network device #2 in the methods 200 to 300 according to the embodiment of the present application, and the communication device 1000 may include a method for executing the method 200 in FIG. 2 or the method 300 in FIG. Elements of the method performed by network device #2.
  • each unit in the communication device 1000 and the above-mentioned other operations and/or functions are respectively intended to implement the corresponding flow of the method 200 in FIG. 2 or the method 300 in FIG. 3 . It should be understood that the specific process for each unit to perform the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, details are not repeated here.
  • the transceiver unit 1200 in the communication device 1000 can be implemented through an input/output interface, and the processing unit 1100 in the communication device 1000 can be implemented through the chip or chip Implementations such as processors, microprocessors, or integrated circuits integrated on a system.
  • Fig. 5 is a schematic block diagram of a wireless communication device according to another embodiment of the present application.
  • the communication device 2000 shown in FIG. 5 may include: a memory 2100 , a processor 2200 , and a communication interface 2300 .
  • the memory 2100, the processor 2200, and the communication interface 2300 are connected through an internal connection path, the memory 2100 is used to store instructions, and the processor 2200 is used to execute the instructions stored in the memory 2100 to control the input/output interface to receive/send messages arts.
  • the memory 2100 may be coupled to the processor 2200 through an interface, or may be integrated with the processor 2200 .
  • the above-mentioned communication interface 2300 uses a transceiver device such as but not limited to a transceiver to implement communication between the communication device 2000 and other devices or communication networks.
  • the above-mentioned communication interface 2300 may also include an input/output interface (input/output interface).
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 2200 or instructions in the form of software.
  • the methods disclosed in the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory 2100, and the processor 2200 reads the information in the memory 2100, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.
  • the processor may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP), dedicated integrated Circuit (application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory may include a read-only memory and a random access memory, and provide instructions and data to the processor.
  • a portion of the processor may also include non-volatile random access memory.
  • the processor may also store device type information.
  • FIG. 6 is a schematic diagram of a chip system according to an embodiment of the present application.
  • the chip system here may also be a system composed of circuits.
  • the chip system 3000 shown in FIG. 6 includes: a logic circuit 3100 and an input/output interface (input/output interface) 3200, the logic circuit is used to couple with the input interface, and transmit data through the input/output interface (for example, DAPS switching command) to execute the methods described in Figures 2 to 3.
  • the embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the method in any one of the above method embodiments.
  • the above processing device may be one or more chips.
  • the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated circuit (ASIC), or a system chip (system on chip, SoC). It can be a central processor unit (CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller unit) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • CPU central processor unit
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller unit
  • PLD programmable logic device
  • the present application also provides a computer program product, the computer program product including: computer program code, when the computer program code is run on the computer, the computer is made to execute the computer program described in Fig. 2 to Fig. 3 .
  • the method executed by the terminal device in the embodiment is illustrated.
  • the present application also provides a computer-readable storage medium, the computer-readable storage medium stores program codes, and when the program codes are run on a computer, the computer is made to execute The method executed by the terminal device in the embodiment shown in 3.
  • the present application also provides a system, which includes the foregoing one or more terminal devices and/or network devices (network device #1 and network device #2).
  • the terminal equipment in the above-mentioned various device embodiments corresponds completely to the terminal equipment in the method embodiments, and the corresponding steps are performed by corresponding modules or units, for example, the transceiver unit (transceiver) performs the steps of receiving or sending in the method embodiments, except for sending , receiving and other steps may be performed by a processing unit (processor).
  • a processing unit for the functions of the specific units, reference may be made to the corresponding method embodiments.
  • a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be components.
  • One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between two or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more packets of data (e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems). Communicate through local and/or remote processes.
  • packets of data e.g., data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet via a signal interacting with other systems.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • each functional unit may be fully or partially implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product comprises one or more computer instructions (programs).
  • program instructions program instructions
  • the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请提供了一种无线通信方法及无线通信装置，该方法包括：接收来自源小区所属的网络设备的第一RRC重配置消息，第一RRC重配置消息包括DAPS切换命令，DAPS切换命令用于指示从源小区切换到目标小区，DAPS切换命令包括在目标小区使用的第一配置；当第一配置和第二配置之和超过无线接入能力时，通过第三配置与源小区所属的网络设备通信，或者，释放第二配置；第二配置是切换之前在源小区使用的配置，第三配置与第一配置之和不超过无线接入能力；通过第一配置接入目标小区成功之后，向目标小区所属的网络设备发送RRC重配置完成消息。根据本申请，可以避免源小区的配置和目标小区的配置之和超过无线接入能力导致的业务中断。

Description

无线通信方法及无线通信装置 技术领域
本申请涉及无线通信领域，并且更具体地，涉及一种无线通信方法及无线通信装置。
背景技术
在双激活协议栈切换(dual active protocol stack handover，DAPS HO)过程中，终端设备在一段时间内与源网络设备(或源小区)和目标网络设备(或目标小区)都有数据传输。终端设备与源网络设备基于源小区的配置进行数据传输，终端设备与目标网络设备基于目标小区的配置进行数据传输。其中，目标小区的配置携带在源网络设备向终端设备发送的无线资源控制(radio resource control，RRC)重配置消息中。
然而，若终端设备同时基于源小区的配置和目标小区的配置工作，可能会超过终端设备的无线接入能力，从而触发RRC重建立，导致终端设备的业务中断。
发明内容
本申请提供一种无线通信方法，以期避免源小区的配置和目标小区的配置之和超过终端设备的无线接入能力导致的业务中断。
第一方面，提供了一种无线通信方法，该方法可以包括：接收来自源小区所属的网络设备的第一无线资源控制(radio resource control，RRC)重配置消息，该第一RRC重配置消息包括双激活协议栈(dual active protocol stack，DAPS)切换命令，该DAPS切换命令用于指示从该源小区切换到目标小区，该DAPS切换命令包括在该目标小区使用的第一配置，该第一配置不超过无线接入能力；当该第一配置和第二配置之和超过该无线接入能力时，通过第三配置与该源小区所属的网络设备通信，或者，释放该第二配置；该第二配置是切换之前在该源小区使用的配置，该第三配置与该第一配置之和不超过该无线接入能力；当通过该第一配置接入该目标小区成功之后，向该目标小区所属的网络设备发送RRC重配置完成消息。其中，无线接入能力指的是终端设备的无线接入能力。
基于上述技术方案，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，若确定源小区的配置(即第二配置)和目标小区的配置(即第一配置)之和超过终端设备的无线接入能力，则在终端设备从源小区切换至目标小区的过程中，终端设备降低源小区的配置，使得降低之后的源小区配置(即第三配置)和目标小区的配置之和不超过终端设备的无线接入能力，从而使得终端设备可以继续执行DAPS切换，而不是发起RRC重建立，有利于保证业务的连续性。
或者，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，若确定源小区的配置(即第二配置)和目标小区的配置(即第一配置)之和超过终端设备的无线接入能力，则终端设备释放源小区的配置之后，根据目标小区的配置从源小区切换至目标小区，从而避免终端设备发起RRC重建立而导致的业务中断，有利于保证业务的连续性。
需要说明的是，上述第一配置和第二配置之和超过终端设备的无线接入能力，指的是第一配置和第二配置中与终端设备的无线接入能力相关的配置之和超过终端设备的无线接入能力。例如，第一配置包括终端设备在目标小区使用的上行射频发射通道数，第二配置包括终端设备在源小区使用的上行射频发射通道数。第一配置和第二配置之和超过终端设备的无线接入能力可以指，终端设备在目标小区使用的上行射频发射通道数与终端设备在源小区使用的上行射频发射通道数之和超过终端设备的无线接入能力(即最大支持的上行射频发射通道数)。
类似地，上述第一配置和第三配置之和不超过终端设备的无线接入能力，指的是第一配置和第三配置中与终端设备的无线接入能力相关的配置之和不超过终端设备的无线接入能力。例如，第一配置包括终端设备在目标小区使用的上行射频发射通道数，第三配置包括终端设备在源小区使用的上行射频发射通道数。第一配置和第三配置之和不超过终端设备的无线接入能力可以指，终端设备在目标小区使用的上行射频发射通道数与终端设备在源小区使用的上行射频发射通道数之和不超过终端设备的无线接入能力(即最大支持的上行射频发射通道数)。
示例性地，该第一配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、探测参考信号(sounding reference signal，SRS)资源的个数、SRS资源的端口数、信道状态信息参考信号(channel state information reference signal，CSI-RS)资源的个数、CSI-RS资源的端口数。
第二配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
第三配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
结合第一方面，在第一方面的某些实现方式中，若通过该第三配置与该源小区所属的网络设备通信，则该方法还包括：接收第二RRC重配置消息，该第二RRC重配置消息用于指示释放该第三配置。
其中，该第二RRC重配置消息是目标小区所属的网络设备向终端设备发送的。
结合第一方面，在第一方面的某些实现方式中，该当该第一配置和第二配置之和超过该无线接入能力时，通过第三配置与该源小区所属的网络设备通信，或者，释放该第二配置，包括：当该第一配置和该第二配置之和超过该无线接入能力，且该第一配置低于该无线接入能力时，通过该第三配置与该源小区所属的网络设备通信。
第二方面，提供了一种无线通信装置，该无线通信装置可以是终端设备，或终端设备中的部件。该无线通信装置可以包括用于执行第一方面以及第一方面中任一种可能实现方式中的方法的各个模块或单元。
第三方面，提供了一种无线通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面及第一方面中任一种可能实现方式中的方法。可选地，该无线通信装置还包括存储器。可选地，该无线通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该无线通信装置为终端设备。当该无线通信装置为终端设备时，该通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该无线通信装置为配置于终端设备中的芯片。当该无线通信装置为配置于终端设备中的芯片时，该通信接口可以是输入/输出接口。
可选地，该收发器可以为收发电路。可选地，该输入/输出接口可以为输入/输出电路。
第四方面，提供了一种无线通信装置，包括处理电路和接口电路。该接口电路用于与该无线通信装置外部的存储器耦合，并为该处理电路访问该存储器提供通信接口；该处理电路用于执行该存储器中的程序指令，以实现上述第一方面及第一方面中任一种可能实现方式中的方法。
第五方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。所述处理电路用于通过所述输入电路接收信号，并通过所述输出电路发射信号，使得所述处理器执行第一方面中任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为一个或多个芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第六方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面中任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第六方面中的处理装置可以是一个或多个芯片。该处理装置中的处理器可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面中任一种可能实现方式中的方法。
第八方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得上述第一方面中任一种可 能实现方式中的方法被执行。
附图说明
图1是适用于本申请实施例提供的无线通信的方法的通信系统的示意图；
图2示出了本申请实施例提供的无线通信方法的示意性流程图；
图3示出了本申请实施例提供的无线通信方法的示意性流程图；
图4示出了本申请实施例提供的无线通信装置的示意图；
图5示出了本申请另一实施例提供的无线通信装置的示意性框图；
图6示出了本申请实施例提供的一种芯片系统的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如，长期演进(long term evolution，LTE)系统、频分双工(frequency division duplex，FDD)系统、时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)通信系统或新无线接入技术(new radio access technology，NR)，车到其它设备(vehicle-to-X V2X)，其中V2X可以包括车到互联网(vehicle to network，V2N)、车到车(vehicle to vehicle，V2V)、车到基础设施(vehicle to infrastructure，V2I)、车到行人(vehicle to pedestrian，V2P)等、车间通信长期演进技术(long term evolution-vehicle，LTE-V)、车联网、机器类通信(machine type communication，MTC)、物联网(Internet of things，IoT)、机器间通信长期演进技术(long term evolution-machine，LTE-M)、机器到机器(machine to machine，M2M)等。
本申请实施例中，网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved Node B，或home Node B，HNB)、基带单元(baseband unit，BBU)，WiFi系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception，TRP)等，还可以为5G，如，NR系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括有源天线单元(active antenna unit，AAU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU负责处理非实时协议和服务，实现无线资源控制(radio resource control，RRC)，业务数据适配协议栈(service data adaptation protocol，SDAP)协议层，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能。DU负责处理物理层协议和实时服务，实现无线链路控制(radio link control，RLC)层、媒体接入控制(medium access control，MAC)层和物理(physical，PHY)层的功能。AAU实现部分物 理层处理功能、射频处理及有源天线的相关功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+AAU发送的。可以理解的是，网络设备可以为包括CU节点、DU节点、AAU节点中的一项或多项的设备。此外，可以将CU划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
CU实体的功能可以由一个或多个实体实现。例如，可以对CU实体的功能进行进一步切分，例如，控制面(control plane，CP)的功能和用户面(user plane，UP)的功能可以分离，即CU实体包括CU的控制面(CU-CP)实体和CU用户面(CU-UP)实体，该CU-CP实体和CU-UP实体可以与DU实体相耦合，共同完成网络设备的功能。一种可能的方式中，CU-CP实体负责控制面功能，主要包含RRC协议层和PDCP控制面(PDCP control plane，PDCP-C)协议层。PDCP-C协议层主要负责控制面数据的加解密，完整性保护，数据传输等。CU-UP实体负责用户面功能，主要包含SDAP协议层和PDCP用户面(PDCP user plane，PDCP-U)协议层。其中，SDAP协议层主要负责将核心网的数据流(flow)映射到承载。PDCP-U协议层主要负责数据面的加解密，完整性保护，头压缩，序列号维护，数据传输等。
网络设备为小区提供服务，终端设备通过网络设备分配的传输资源(例如，频域资源，或者说，频谱资源)与小区进行通信。该小区可以属于宏基站(例如，宏eNB或宏gNB等)，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(metro cell)、微小区(micro cell)、微微小区(pico cell)、毫微微小区(femto cell)等，这些小小区具有覆盖范围小、发射功率低的特点，适用于提供高速率的数据传输服务。
在本申请实施例中，终端设备包括用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动终端、用户终端、终端、无线通信设备、用户代理或用户装置。本申请实施例中的终端设备可以是手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如： 智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(Internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分。其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。
本申请对于终端设备的具体形式不做限定。
为便于理解本申请实施例，首先结合图1详细说明适用于本申请实施例的通信系统。图1示出了适用于本申请实施例的无线通信方法和无线通信装置的通信系统的示意图。如图1所示，通信系统100可以包括至少两个网络设备，例如图1所示的网络设备110和网络设备120；通信系统100还可以包括至少一个终端设备，例如图1所示的终端设备130。其中，终端设备130可以是移动的或固定的。网络设备110和网络设备120均为可以通过无线链路与终端设备130通信的设备，如基站或基站控制器等。每个网络设备可以为特定的地理区域提供通信覆盖，并且可以与位于覆盖区域(小区)内的终端设备进行通信。
图1示例性地示出了两个网络设备和一个终端设备，可选地，通信系统100可以包括至少一个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
上述各个通信设备，如图1中的网络设备110、网络设备120或终端设备130，可以配置多个天线。多个天线可以包括至少一个用于发送信号的发射天线和至少一个用于接收信号的接收天线。另外，各通信设备还附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。因此，网络设备与终端设备之间可通过多天线技术通信。
可选地，无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体，本申请实施例不限于此。
为便于理解本申请实施例，首先对本申请中涉及到的术语作简单说明。
1、RRC重建立：当终端设备发生切换失败、重配置失败、完整性检测失败、无线链路失败(radio link failure，RLF)等情况时，终端设备可以发起RRC重建立流程。
例如，RRC重建立流程可以包括以下几个步骤：
步骤1、终端设备向重建立小区(或者重建立小区所属的网络设备)发送RRC重建立请求消息。
步骤2、重建立小区允许终端设备的请求，则向终端设备发送RRC重建立消息。
步骤3、终端设备向重建立小区发送RRC重建立完成消息。
这里的重建立小区可以是终端设备经过小区搜索或检测所确定的小区。重建立小区可以是满足预定准则的小区。如NR协议技术规范(technical specification，TS)38.304-f30中的小区选择S准则。为了简洁，这里不作详细说明，也不做限制。
2、切换：在无线通信系统中，当终端设备从一个小区向另一个小区移动/靠近时，为了保证终端设备的通信不中断，需要进行切换。在本申请实施例中，源小区表示切换前为终端设备提供服务的小区，目标小区表示切换后为终端设备提供服务的小区。目标小区的相关信息(如目标小区的物理小区标识(physical cell identifier，PCI)、频率信息、切换 至目标小区所需的随机接入资源信息等)，可以通过RRC重配置消息来指示，RRC重配置消息是源小区所属的网络设备(即源网络设备)向终端设备发送的。
切换可以是站内切换或站间切换。站内切换，可以指源小区与目标小区属于同一个网络设备(如基站)，其中，源小区、目标小区可以是同一个小区或者不同的小区；站间切换，指源小区与目标小区属于不同的网络设备(如基站)。本申请对此不做限定。
应理解，小区即为网络设备的覆盖区域，源小区对应源网络设备(例如源基站)，目标小区对应目标网络设备(如目标基站)。
3、双激活协议栈切换(dual active protocol stack handover，DAPS HO)：为了保证终端设备切换过程中的零中断，通信行业标准中引入了DAPS切换。
在传统的切换过程中，终端设备接收到源网络设备的DAPS切换命令后断开与源小区的连接，接入到目标小区。与传统切换不同的是，DAPS切换过程中，终端设备接收到源网络设备发送的DAPS切换命令后，接入到目标小区，与此同时，终端设备还保持与源小区链路的通信，直到目标网络设备通知终端设备完全释放源小区配置，终端设备才停止与源小区的通信，释放与源小区之间的通信链路。其中，DAPS切换命令携带在源网络设备向终端设备发送的RRC重配置消息中。
DAPS的切换流程与传统切换流程类似，由源网络设备决定要执行切换，然后，源网络设备向目标网络设备发送切换请求。进一步地，目标网络设备向源网络设备回复切换确认消息，指示接受终端设备切换到目标小区。进一步地，源网络设备向终端设备发送DAPS切换命令，指示终端设备切换到目标小区。然后，终端设备同时保持源小区和目标小区的连接。当终端设备成功接入到目标小区并与核心网建立新的连接之后，核心网将转换下行数据流切换到目标网络设备，并同时下发结束标记(end marker)数据包给源网络设备。然后，源网络设备转发数据给目标网络设备。当目标网络设备收到end marker报文后，目标网络设备可以通知终端设备释放源小区连接，从而完成DAPS切换过程。
在DAPS切换过程中，终端设备成功接入到目标网络设备之后，终端设备会停止向源网络设备发送新的上行数据。当终端设备成功释放与源小区的连接之后，终端设备停止与源网络设备的所有通信。当终端设备成功接入到目标网络设备后，源网络设备收到目标网络设备发送的切换成功指示消息，由此源网络设备停止向终端设备发送新的下行数据。终端设备成功释放与源小区的连接之前，源网络设备不会向终端设备发送新的下行数据，但会发送重传的下行数据。
如上所述，在DAPS切换的过程中，终端设备在一段时间内与源网络设备(或源小区)和目标网络设备(或目标小区)都有数据传输。终端设备与源网络设备基于源小区的配置(即下文实施例中的第二配置)进行数据传输，终端设备与目标网络设备基于目标小区的配置(即下文实施例中的第一配置)进行数据传输。其中，目标小区的配置携带在源网络设备向终端设备发送的RRC重配置消息中。
然而，若终端设备同时基于源小区的配置和目标小区的配置工作，则可能会超过UE的无线接入能力，从而触发RRC重建立，导致终端设备的业务中断。
有鉴于此，本申请提供一种无线通信方法，以期避免源小区的配置和目标小区的配置之和超过UE的无线接入能力导致的业务中断。
下面结合附图详细说明本申请实施例提供的方法。
应理解，下文仅为便于理解和说明，以终端设备和网络设备之间的交互为例详细说明本申请实施例提供的方法。但这不应对本申请提供的方法的执行主体构成任何限定。例如，下文实施例示出的终端设备可以替换为配置于终端设备中的部件(如芯片或电路)等。下文实施例示出的网络设备也可以替换为配置于网络设备中的部件(如芯片或电路)等。
下文示出的实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可。例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
图2是从设备交互的角度示出的本申请实施例提供的方法200的示意性流程图。如图2所示，该方法200可以包括S210至S240，下面详细说明各个步骤。
S210，网络设备#1发送第一RRC重配置消息。相应地，在S210中，终端设备接收第一RRC重配置消息。
其中，网络设备#1是源小区所属的网络设备。第一RRC重配置消息包括DAPS切换命令，DAPS切换命令用于指示终端设备从源小区切换到目标小区。示例性地，DAPS切换命令是第一RRC重配置(RRC reconfiguration)消息携带的“daps-Config-r16”信元。
DAPS切换命令中包括第一配置信息，第一配置信息用于指示第一配置。第一配置是终端设备在目标小区所使用的配置，或者，第一配置是终端设备在目标小区进行通信所使用的配置，或者，第一配置是网络设备#2为终端设备提供的在目标小区进行通信所使用的配置。其中，网络设备#2是目标小区所属的网络设备，第一配置信息是网络设备#1从网络设备#2接收的。应理解，第一配置不超过终端设备的无线接入能力。
第一配置信息包括以下一项或多项：目标小区的信息(如，目标小区的PCI以及目标小区对应的频率信息、网络设备#2为终端设备提供的小区无线网络临时标识(cell-radio network temporary identifier，C-RNTI))、接入目标小区所需的随机接入信道(random access channel，RACH)资源信息(如，专用RACH资源和/或公共RACH资源)。
当然，第一配置信息还可以包括更多的参数，本申请实施例对此不作限定。
S220，终端设备通过第三配置与网络设备#1通信。
具体地，在S220中，当第一配置和第二配置之和超过终端设备的无线接入能力时，终端设备通过第三配置与网络设备#1通信。其中，第一配置和第三配置之和不超过终端设备的无线接入能力。
需要说明的是，在S220中，在终端设备从源小区切换至目标小区的过程中，且终端设备没有接收到来自网络设备#2的释放源小区的消息之前，终端设备通过第三配置与网络设备#1通信。终端设备通过第三配置与网络设备#1通信的同时，终端设备接入目标小区成功之后，通过第一配置与网络设备#2通信。也就是说，在终端设备接入目标小区成功之后，且终端设备没有收到释放源小区的消息之前，终端设备在源小区和目标小区都有数据收发，该数据收发是终端设备与网络设备#1或网络设备#2的非信令的交互，且终端设备在源小区和目标小区收发的用户面数据相同。
应理解，本申请实施例所描述的第一配置和第二配置之和超过终端设备的无线接入能力，指的是第一配置和第二配置中与终端设备的无线接入能力相关的配置之和超过终端设备的无线接入能力。例如，第一配置包括终端设备在目标小区使用的上行射频发射通道数， 第二配置包括终端设备在源小区使用的上行射频发射通道数，第一配置和第二配置之和超过终端设备的无线接入能力可以指，终端设备在目标小区使用的上行射频发射通道数与终端设备在源小区使用的上行射频发射通道数之和超过终端设备的无线接入能力(即最大支持的上行射频发射通道数)。
类似地，本申请实施例所描述的第一配置和第三配置之和不超过终端设备的无线接入能力，指的是第一配置和第三配置中与终端设备的无线接入能力相关的配置之和不超过终端设备的无线接入能力。例如，第一配置包括终端设备在目标小区使用的上行射频发射通道数，第三配置包括终端设备在源小区使用的上行射频发射通道数，第一配置和第三配置之和不超过终端设备的无线接入能力可以指，终端设备在目标小区使用的上行射频发射通道数与终端设备在源小区使用的上行射频发射通道数之和不超过终端设备的无线接入能力(即最大支持的上行射频发射通道数)。
示例性地，与终端设备的无线接入能力相关的第一配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、探测参考信号(sounding reference signal，SRS)资源的个数、SRS资源的端口数、信道状态信息参考信号(channel state information reference signal，CSI-RS)资源的个数、CSI-RS资源的端口数。
与终端设备的无线接入能力相关的第二配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
与终端设备的无线接入能力相关的第三配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
第二配置是终端设备发生切换之前在源小区使用的配置，或者，第二配置是终端设备发生切换之前在源小区进行通信所使用的配置。第二配置包括以下一项或多项：源小区的PCI、测量配置、移动控制(mobile control)配置、无线资源配置、接入层(access stratum，AS)安全配置、网络设备#1为终端设备分配的C-RNTI。无线资源配置可以是无线承载(radio bearer，RB)的配置或者是媒体接入控制(medium access control，MAC)主要配置、物理信道配置等。
如上所述，第三配置是终端设备进行DAPS切换的过程中在源小区使用的配置。由于第一配置和第二配置之和超过终端设备的无线接入能力，而第一配置和第三配置之和不超过终端设备的无线接入能力。所以，第三配置与第二配置相比，与终端设备的无线接入能力相关的配置发生了变化。具体地，第三配置与第二配置相比，与终端设备的无线接入能力相关的配置的规格更低。例如，第三配置和第二配置都包括终端设备在源小区使用的上行射频发射通道数，并且第三配置包括的终端设备在源小区使用的上行射频通道数比第二配置包括的终端设备在源小区使用的上行射频通道数少。
综上，在S220中，当第一配置和第二配置之和超过终端设备的无线接入能力时，终端设备将在源小区使用的配置从第二配置降低至第三配置，并在终端设备从源小区切换至目标小区的过程中，通过第三配置与网络设备#1通信。
本申请实施例不限定终端设备确定第一配置和第二配置之和是否超过终端设备的无线接入能力的时机。
作为一个示例，终端设备首先确定第二配置是否已经占满了终端设备的无线接入能力，在第二配置已经占满了终端设备的无线接入能力的情况下，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，可以直接确定第一配置和第二配置之和超过终端设备的无线接入能力；在第二配置没有占满终端设备的无线接入能力的情况下，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，再确定第一配置和第二配置之和是否超过终端设备的无线接入能力。其中，第二配置占满了终端设备的无线接入能力指的是，当终端设备通过第二配置与网络设备#1通信时，终端设备没有能力支持与其他小区或网络设备通信(例如终端设备没有能力支持在目标小区中与网络设备#2通信)。反之，第二配置没有占满终端设备的无线接入能力指的是，当终端设备通过第二配置与网络设备#1通信时，终端设备还有能力支持与其他小区或网络设备通信。
例如，终端设备支持上行3个射频发射通道(简称3T)的多输入多输出(multi input multi output，MIMO)能力。当第二配置包括3T时，终端设备确定第二配置占满了终端设备的无线接入能力，进而，终端设备收到第一RRC重配置消息包括的DAPS切换命令之后，可以直接确定第一配置和第二配置之和超过了终端设备的无线接入能力。当第二配置包括上行2个射频发射通道(简称2T)时，终端设备确定第二配置没有占满终端设备的无线接入能力。终端设备收到第一RRC重配置消息包括的DAPS切换命令之后，可知第一配置包括2T，进一步终端设备可以确定第一配置和第二配置之和为上行4个射频发射通道(简称4T)，超过了终端设备的无线接入能力。
作为另一个示例，终端设备首先确定第一配置是否已经占满了终端设备的无线接入能力，在第一配置没有占满终端设备的无线接入能力的情况下，终端设备再确定第一配置和第二配置之和是否超过终端设备的无线接入能力。其中，第一配置没有占满终端设备的无线接入能力指的是，当终端设备通过第一配置与网络设备#2通信时，终端设备还有能力支持与其他小区或网络设备通信。
例如，终端设备支持3T的MIMO能力。当第一配置包括2T时，终端设备确定第一配置没有占满终端设备的无线接入能力。进一步地，当第二配置包括2T时，终端设备可以确定第一配置和第二配置之和为4T，超过了终端设备的无线接入能力。
作为又一个示例，终端设备收到第一RRC重配置消息包括的DAPS切换命令之后，确定第一配置和第二配置之和是否超过终端设备的无线接入能力。
示例性地，在S220中，当第一配置包括的第一规格和第二配置包括的第一规格之和超过终端设备的无线接入能力时，在终端设备从源小区切换至目标小区的过程中，终端设备通过第三配置与网络设备#1通信。其中，第三配置包括的第一规格和第一配置包括的第一规格之和不超过终端设备的无线接入能力。也就是说，当第一配置包括的第一规格和第二配置包括的第一规格之和超过终端设备的无线接入能力时，终端设备将在源小区使用的第一规格从第二配置包括的第一规格降低至第三配置包括的第一规格，并在终端设备从源小区切换至目标小区的过程中，通过第三配置包括的第一规格与网络设备#1通信。
示例性地，第一规格包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
以第一规格包括上行射频发射通道数为例。假设终端设备支持3T的MIMO能力，第一配置包括2T，第二配置包括2T。可知，第一配置和第二配置之和为4T，超过了终端设 备的无线接入能力，则终端设备可以将在源小区使用的上行射频发射通道数降为1个，即第三配置包括上行1个射频发射通道(简称1T)。当第三配置包括1T时，第一配置和第三配置之和为3T，没有超过终端设备的无线接入能力。
可以理解，在第一配置与第三配置之和不超过终端设备的无线接入能力的情况下，第一配置低于终端设备的无线接入能力。也就是说，第一配置没有占满终端设备的无线接入能力，从而使得终端设备还有能力支持通过第三配置与网络设备#1通信。因此，在S220中，当第一配置和第二配置之和超过终端设备的无线接入能力且第一配置低于终端设备的无线接入能力时，在终端设备从源小区切换至目标小区的过程中，终端设备通过第三配置与网络设备#1通信。
S230，终端设备发送RRC重配置完成(RRC reconfiguration complete)消息。相应地，在S230中，网络设备#2接收RRC重配置完成消息。
具体地，在S230中，终端设备接入目标小区成功之后，终端设备向网络设备#2发送RRC重配置完成消息。
S240，终端设备接收第二RRC重配置消息。相应地，在S240中，网络设备#2发送第二RRC重配置消息。
具体地，在S240中，终端设备成功切换到目标小区之后，网络设备#2向终端设备发送第二RRC重配置消息，第二RRC重配置消息用于指示释放源小区，即用于指示释放第三配置。
在本申请实施例中，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，若确定源小区的配置和目标小区的配置之和超过终端设备的无线接入能力，则在终端设备从源小区切换至目标小区的过程中，终端设备降低源小区的配置，使得降低之后的源小区配置和目标小区的配置之和不超过终端设备的无线接入能力，从而避免终端设备发起RRC重建立而导致的业务中断，有利于保证业务的连续性。
图3是从设备交互的角度示出的本申请实施例提供的方法300的示意性流程图。如图3所示，该方法300可以包括S310至S330，下面详细说明各个步骤。
S310，网络设备#1发送第一RRC重配置消息。相应地，在S310中，终端设备接收第一RRC重配置消息。
具体地，S310与方法200中的S210相同，为了简洁，本申请实施例不再详述。
S320，终端设备释放第二配置。
关于第二配置的描述可以参考上文S220，为了简洁，此处不再详述。
具体地，在S320中，当第一配置和第二配置之和超过终端设备的无线接入能力时，终端设备释放第二配置。
终端设备释放第二配置可以理解为终端设备删除存储的第二配置，或者终端设备释放终端设备与源小区之间的链路，或者终端设备释放与网络设备#1之间的连接。可以理解，终端设备释放第二配置之后，在终端设备与网络设备#1重新建立连接之前，终端设备将不会与网络设备#1有数据交互。
应理解，本申请实施例所描述的第一配置和第二配置之和超过终端设备的无线接入能力，指的是第一配置和第二配置中与终端设备的无线接入能力相关的配置之和超过终端设备的无线接入能力。例如，第一配置包括终端设备在目标小区使用的上行射频发射通道数， 第二配置包括终端设备在源小区使用的上行射频发射通道数。第一配置和第二配置之和超过终端设备的无线接入能力可以指，终端设备在目标小区使用的上行射频发射通道数与终端设备在源小区使用的上行射频发射通道数之和超过终端设备的无线接入能力(即最大支持的上行射频发射通道数)。
本申请实施例不限定终端设备确定第一配置和第二配置之和是否超过终端设备的无线接入能力的时机。
作为一个示例，终端设备首先确定第二配置是否已经占满了终端设备的无线接入能力，在第二配置已经占满了终端设备的无线接入能力的情况下，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，可以直接确定第一配置和第二配置之和超过终端设备的无线接入能力；在第二配置没有占满终端设备的无线接入能力的情况下，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，再确定第一配置和第二配置之和是否超过终端设备的无线接入能力。更多相关描述可以参考上文S220。
作为另一个示例，终端设备首先确定第一配置是否已经占满了终端设备的无线接入能力，在第一配置已经占满了终端设备的无线接入能力的情况下，终端设备可以确定第一配置和第二配置之和超过了终端设备的无线接入能力；在第一配置没有占满终端设备的无线接入能力的情况下，终端设备再确定第一配置和第二配置之和是否超过终端设备的无线接入能力。其中，第一配置占满了终端设备的无线接入能力指的是，当终端设备通过第一配置与网络设备#2通信时，终端设备没有能力支持与其他小区或网络设备通信(例如终端设备没有能力支持在源小区中与网络设备#1通信)。更多相关描述可以参考上文S220。
作为又一个示例，终端设备收到第一RRC重配置消息包括的DAPS切换命令之后，确定第一配置和第二配置之和是否超过终端设备的无线接入能力。
示例性地，在S320中，当第一配置包括的第一规格和第二配置包括的第一规格之和超过终端设备的无线接入能力时，终端设备释放第二配置。
示例性地，第一规格包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
以第一规格包括下行射频接收通道数为例。假设终端设备支持下行4个射频接收通道(简称4R)的MIMO能力，第一配置包括4R，第二配置包括下行2个射频接收通道(简称2R)。可知，第一配置和第二配置之和为下行6个射频接收通道(简称6R)，超过了终端设备的无线接入能力，则终端设备释放第二配置。
S330，终端设备发送RRC重配置完成消息。相应地，在S330中，网络设备#2接收RRC重配置完成消息。
在S320中，终端设备释放第二配置之后，继续根据第一配置从源小区切换至目标小区。进一步地，在S330中，终端设备在目标小区接入成功之后，则向网络设备#2发送RRC重配置完成消息，网络设备#2是目标小区所属的网络设备。
在本申请实施例中，终端设备接收到第一RRC重配置消息包括的DAPS切换命令之后，若确定源小区的配置和目标小区的配置之和超过终端设备的无线接入能力，则终端设备释放源小区的配置之后，根据目标小区的配置从源小区切换至目标小区，从而避免在源小区的配置和目标小区的配置之和超过终端设备的无线接入能力的情况下，终端设备发起RRC重建立而导致的业务中断，有利于保证业务的连续性。
应理解，在上文各实施例中，终端设备和/或网络设备可以执行各实施例中的部分或全部步骤。这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照各实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。且，各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
以上，结合图2至图3详细说明了本申请实施例提供的无线通信的方法。以下，结合图4至图6详细说明本申请实施例提供的无线通信装置。
图4是本申请实施例提供的无线通信装置的示意性框图。如图4所示，该通信装置1000可以包括处理单元1100和收发单元1200。
在一种可能的设计中，该通信装置1000可对应于上文方法实施例中的终端设备，例如，可以为终端设备，或者配置于终端设备中的部件(如芯片或芯片系统等)。
应理解，该通信装置1000可对应于根据本申请实施例的方法200至300中的终端设备，该通信装置1000可以包括用于执行图2中的方法200或图3中的方法300中终端设备执行的方法的单元。并且，该通信装置1000中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200或图3中的方法300的相应流程。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1000为配置于终端设备中的芯片时，该通信装置1000中的收发单元1200可以通过输入/输出接口实现，该通信装置1000中的处理单元1100可以通过该芯片或芯片系统上集成的处理器、微处理器或集成电路等实现。
在另一种可能的设计中，该通信装置1000可对应于上文方法实施例中的网络设备，例如，可以为网络设备，或者配置于网络设备中的部件(如芯片或芯片系统等)。
应理解，该通信装置1000可对应于根据本申请实施例的方法200至300中的网络设备#1，该通信装置1000可以包括用于执行图2中的方法200或图3中的方法300中网络设备#1执行的方法的单元。并且，该通信装置1000中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200或图3中的方法300的相应流程。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
应理解，该通信装置1000可对应于根据本申请实施例的方法200至300中的网络设备#2，该通信装置1000可以包括用于执行图2中的方法200或图3中的方法300中网络设备#2执行的方法的单元。并且，该通信装置1000中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200或图3中的方法300的相应流程。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1000为配置于网络设备中的芯片时，该通信装置1000中的收发单元1200可以通过输入/输出接口实现，该通信装置1000中的处理单元1100可以通过该芯片或芯片系统上集成的处理器、微处理器或集成电路等实现。
图5是本申请另一实施例的无线通信装置的示意性框图。图5所示的通信装置2000可以包括：存储器2100、处理器2200、以及通信接口2300。其中，存储器2100、处理器2200，通信接口2300通过内部连接通路相连，该存储器2100用于存储指令，该处理器2200用于执行该存储器2100存储的指令，以控制输入/输出接口接收/发送报文。可选地， 存储器2100既可以和处理器2200通过接口耦合，也可以和处理器2200集成在一起。
需要说明的是，上述通信接口2300使用例如但不限于收发器一类的收发装置，来实现通信装置2000与其他设备或通信网络之间的通信。上述通信接口2300还可以包括输入/输出接口(input/output interface)。
在实现过程中，上述方法的各步骤可以通过处理器2200中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器2100，处理器2200读取存储器2100中的信息，结合其硬件完成上述方法的步骤。为避免重复，这里不再详细描述。
应理解，本申请实施例中，该处理器可以为中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中，该存储器可以包括只读存储器和随机存取存储器，并向处理器提供指令和数据。处理器的一部分还可以包括非易失性随机存取存储器。例如，处理器还可以存储设备类型的信息。
图6是本申请实施例的一种芯片系统的示意图。这里的芯片系统也可为电路组成的系统。图6所示的芯片系统3000包括：逻辑电路3100以及输入/输出接口(input/output interface)3200，所述逻辑电路用于与输入接口耦合，通过所述输入/输出接口传输数据(例如DAPS切换命令)，以执行图2至图3所述的方法。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器用于执行上述任一方法实施例中的方法。
应理解，上述处理装置可以是一个或多个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2至图3所示实施例中终端设备执行的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读存储介质，该计算机可读存储介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2至图3所示实施例中终端设备执行的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终 端设备和/或网络设备(网络设备#1和网络设备#2)。
上述各个装置实施例中终端设备和方法实施例中的终端设备完全对应，由相应的模块或单元执行相应的步骤，例如收发单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照本申请实施例所述的流程或功能。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一 个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (12)

  1. 一种无线通信方法，其特征在于，包括：
    接收来自源小区所属的网络设备的第一无线资源控制RRC重配置消息，所述第一RRC重配置消息包括双激活协议栈DAPS切换命令，所述DAPS切换命令用于指示从所述源小区切换到目标小区，所述DAPS切换命令包括在所述目标小区使用的第一配置，所述第一配置不超过无线接入能力；
    当所述第一配置和第二配置之和超过所述无线接入能力时，通过第三配置与所述源小区所属的网络设备通信，或者，释放所述第二配置；所述第二配置是切换之前在所述源小区使用的配置，所述第三配置与所述第一配置之和不超过所述无线接入能力；
    当通过所述第一配置接入所述目标小区成功之后，向所述目标小区所属的网络设备发送RRC重配置完成消息。
  2. 根据权利要求1所述的方法，其特征在于，若通过所述第三配置与所述源小区所属的网络设备通信，则所述方法还包括：
    接收第二RRC重配置消息，所述第二RRC重配置消息用于指示释放所述第三配置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述当所述第一配置和第二配置之和超过所述无线接入能力时，通过第三配置与所述源小区所属的网络设备通信，或者，释放所述第二配置，包括：
    当所述第一配置和所述第二配置之和超过所述无线接入能力，且所述第一配置低于所述无线接入能力时，通过所述第三配置与所述源小区所属的网络设备通信。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于：
    所述第一配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、探测参考信号SRS资源的个数、SRS资源的端口数、信道状态信息参考信号CSI-RS资源的个数、CSI-RS资源的端口数；
    所述第二配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数；
    所述第三配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
  5. 一种无线通信装置，其特征在于，包括收发单元和处理单元，
    所述收发单元用于接收来自源小区所属的网络设备的第一无线资源控制RRC重配置消息，所述第一RRC重配置消息包括双激活协议栈DAPS切换命令，所述DAPS切换命令用于指示从所述源小区切换到目标小区，所述DAPS切换命令包括在所述目标小区使用的第一配置，所述第一配置不超过无线接入能力；
    当所述第一配置和第二配置之和超过所述无线接入能力时，所述收发单元用于通过第三配置与所述源小区所属的网络设备通信，或者，所述处理单元用于释放所述第二配置；所述第二配置是切换之前在所述源小区使用的配置，所述第三配置与所述第一配置之和不超过所述无线接入能力；
    当通过所述第一配置接入所述目标小区成功之后，所述收发单元还用于向所述目标小 区所属的网络设备发送RRC重配置完成消息。
  6. 根据权利要求5所述的装置，其特征在于，所述收发单元还用于接收第二RRC重配置消息，所述第二RRC重配置消息用于指示释放所述第三配置。
  7. 根据权利要求5或6所述的装置，其特征在于，当所述第一配置和所述第二配置之和超过所述无线接入能力，且所述第一配置低于所述无线接入能力时，所述收发单元用于通过所述第三配置与所述源小区所属的网络设备通信。
  8. 根据权利要求5至7中任一项所述的装置，其特征在于：
    所述第一配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、探测参考信号SRS资源的个数、SRS资源的端口数、信道状态信息参考信号CSI-RS资源的个数、CSI-RS资源的端口数；
    所述第二配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数；
    所述第三配置包括以下一项或多项：上行射频发射通道数、下行射频接收通道数、SRS资源的个数、SRS资源的端口数、CSI-RS资源的个数、CSI-RS资源的端口数。
  9. 一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述计算机程序被执行时，以使得执行如权利要求1至4中任一项所述的方法。
  10. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行如权利要求1至4中任一项所述的方法。
  11. 一种无线通信装置，其特征在于，包括：
    处理器和存储器，其中，所述存储器用于存储程序指令，所述处理器用于执行所述存储器中的程序指令，以实现如权利要求1至4中的任一所述方法。
  12. 一种无线通信装置，其特征在于，包括：
    处理电路和接口电路；其中，
    所述接口电路用于与所述无线通信装置外部的存储器耦合，并为所述处理电路访问所述存储器提供通信接口；
    所述处理电路用于执行所述存储器中的程序指令，以实现如权利要求1至4中的任一所述方法。
PCT/CN2021/121791 2021-09-29 2021-09-29 无线通信方法及无线通信装置 Ceased WO2023050181A1 (zh)

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CN110958653A (zh) * 2018-09-27 2020-04-03 维沃移动通信有限公司 一种双连接切换方法、终端及网络设备
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