WO2024093840A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

Info

Publication number
WO2024093840A1
WO2024093840A1 PCT/CN2023/127223 CN2023127223W WO2024093840A1 WO 2024093840 A1 WO2024093840 A1 WO 2024093840A1 CN 2023127223 W CN2023127223 W CN 2023127223W WO 2024093840 A1 WO2024093840 A1 WO 2024093840A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
terminal device
cell
configuration information
public configuration
Prior art date
Application number
PCT/CN2023/127223
Other languages
English (en)
French (fr)
Inventor
仲亚萍
胡星星
Original Assignee
华为技术有限公司
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2024093840A1 publication Critical patent/WO2024093840A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • the present application relates to the field of communications, and in particular to a communication method and a communication device.
  • Satellite communications also known as non-terrestrial networks (NTN) have the advantages of wide coverage, long communication distance, high reliability, high flexibility, and high throughput.
  • NTN non-terrestrial networks
  • 5G fifth-generation mobile network
  • 5G can provide communication services for areas that are difficult to cover by terrestrial networks, such as oceans and forests. It can also enhance the reliability of 5G communications, such as providing more stable and high-quality communication services for trains, airplanes, and users on these vehicles, and can also provide more data transmission resources and support a larger number of connections.
  • NTN due to the large coverage area of NTN cells, the number of users that can access a cell is huge.
  • the high-speed movement of satellites will cause a large number of user equipment (UE) to switch cells at the same time, triggering a signaling storm.
  • UE user equipment
  • the public configuration information of the target cell can be sent to the UE by multicast or broadcast. Since the public configuration information can be sent to multiple UEs through one physical resource, it can be considered as a way to save signaling overhead.
  • the solution of sending the public configuration information of the target cell to the UE by multicast or broadcast to achieve cell switching has the problem of low switching success rate. Therefore, it is necessary to study how to improve the success rate of cell switching.
  • the embodiments of the present application disclose a communication method and a communication device, which can improve the success rate of cell switching.
  • an embodiment of the present application provides a communication method, the method comprising: a terminal device receives first information, the first information comprising public configuration information of at least one cell, the first information being carried via a multicast message or a broadcast message; the terminal device sends second information, the second information being used to indicate part or all of the public configuration information of the at least one cell received by the terminal device.
  • a terminal device sends a second information, which is used to indicate part or all of the public configuration information of at least one cell received by the terminal device, so that the network device decides whether to send a switching command carrying the configuration information of the cell to the terminal device based on the second information, or to send a switching command carrying the configuration information specific to the terminal device.
  • the method is applied in a satellite communication scenario.
  • the terminal device can save signaling overhead by receiving the first information carried by a multicast message or a broadcast message, that is, avoiding a signaling storm.
  • the terminal device sends the second information so that the network device can decide whether to send a switching command carrying the cell configuration information or a switching command carrying the terminal device's exclusive configuration information to the terminal device based on the second information, which can reduce the cell switching failure caused by the terminal device's lack of the cell's public configuration information, thereby improving the success rate of the cell switching.
  • the public configuration information of some or all of the at least one cell received by the terminal device includes public configuration information of a first cell
  • the second information includes one or more of the following: an identifier of the public configuration information of the first cell, an index of the public configuration information of the first cell, an identifier of the first cell, or an index of the first cell.
  • the first cell may be a neighboring cell of a cell currently accessed by the terminal device.
  • the second information can accurately indicate the received common configuration information, and the signaling overhead is small.
  • the first information further includes first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell.
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, so that the terminal device feeds back the received public configuration information.
  • the method further includes: the terminal device receiving third information, the third information including the first indicator
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell; the first information is carried by a multicast message, and the third information is carried by a system message; or, the first information is carried by a multicast message, and the third information includes a group identifier corresponding to the terminal device and the first indication information, and the group identifier is used by the terminal device to monitor the physical downlink control channel (PDCCH).
  • the group identifier can be a group-radio network temporary identifier (G-RNTI).
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, so that the terminal device feeds back the received public configuration information.
  • the first indication information is also used to indicate the format of the public configuration information received by the terminal device, that is, the format of the second information.
  • the first indication information is also used to indicate the format of the public configuration information received by the terminal device, which can be understood as: the first indication information is also used to indicate the content through which the terminal device indicates the received public configuration information.
  • the first indication information is used to indicate that the terminal device only feeds back the public configuration information of the cell received, but does not feed back the information of the specific cell received; it may also indicate that the terminal device needs to feed back the public configuration information of which specific cells has been received, and so on.
  • the first indication information is also used to indicate the format of the received public configuration information fed back by the terminal device, so that the terminal device feeds back the received public configuration information in a specific format, so that the network device can accurately learn the public configuration information received by the terminal device.
  • the first indication information is used to instruct the terminal device to feed back the received public configuration information, or the first indication information is used to instruct the terminal device to feed back the cell to which the received public configuration information belongs, or the first indication information is used to instruct the terminal device to feed back the received public configuration information and the cell to which the received public configuration information belongs.
  • the network device can accurately learn the public configuration information received by the terminal device, and the signaling overhead is small.
  • the method further includes: the terminal device receives fourth information, the fourth information is used to instruct the terminal device to switch to a target cell; the fourth information includes the dedicated configuration information of the terminal device in the target cell, and the public configuration information received by the terminal device includes the public configuration information of the target cell.
  • the fourth information may not include the public configuration information of the target cell.
  • part or all of the public configuration information of the at least one cell received by the terminal device includes the public configuration information of the target cell.
  • the terminal device receives the fourth information, and the public configuration information received by the terminal device includes the public configuration information of the target cell.
  • the fourth information does not need to include the public configuration information of the target cell, which can save signaling overhead.
  • the fourth information includes second indication information, and the second indication information is used to indicate that the fourth information does not carry public configuration information of the target cell, or the second indication information is used to indicate that the terminal device accesses the target cell based on the public configuration information in the system message of the target cell.
  • the fourth information includes second indication information, which indicates that the fourth information does not carry the public configuration information of the target cell or that the terminal device accesses the target cell based on the public configuration information in the system message of the target cell, thereby avoiding the terminal device from parsing the exclusive configuration information of the terminal device in the target cell in the fourth information as the configuration information of the cell.
  • the method also includes: the terminal device receives fifth information, the fifth information is used for the terminal device to switch to the target cell, the fifth information includes the terminal device's exclusive configuration information in the target cell, and the public configuration information received by the terminal device does not include the public configuration information of the target cell; the terminal device obtains the first public configuration information in the system information block (SIB) of the target cell according to the fifth information; the terminal device accesses the target cell using the first public configuration information and the terminal device's exclusive configuration information in the target cell.
  • SIB system information block
  • the terminal device uses the first public configuration information and the terminal device's exclusive configuration information in the target cell to access the target cell; the success rate of cell switching can be improved.
  • the terminal device acquires the first public configuration information in the SIB of the target cell according to the fifth information, including: the terminal device performs downlink synchronization with the target cell according to the physical cell identifier (PCI) and frequency of the target cell in the fifth information; the terminal device reads the first public configuration information in the SIB of the target cell through the G-RNTI corresponding to the target cell.
  • the G-RNTI may be agreed upon between the terminal device and the network device, or may be sent to the terminal device in the fifth information.
  • the terminal device reads the first common configuration information in the SIB of the target cell through the G-RNTI corresponding to the target cell; this can prevent other terminal devices that are not in the group corresponding to the target cell from accessing the target cell.
  • the method further includes: the terminal device sending third indication information, where the third indication information is used to indicate that the terminal device has not received public configuration information of the target cell before switching to the target cell.
  • the terminal device sends the third indication information, so that the network device can learn that the terminal device has not received the public configuration information of the target cell.
  • the third indication information is carried by a third message (ie, Msg3) in the random access process.
  • the third indication information is carried by the third message in the random access process, which can save signaling overhead.
  • the method further includes: the terminal device receiving sixth information, where the sixth information is used by the terminal device to acquire public configuration information of the target cell.
  • the terminal device receives the sixth information so as to acquire the public configuration information of the target cell according to the sixth information.
  • the sixth information includes the public configuration information of the target cell or the incremental configuration information of the public configuration information of the target cell relative to the public configuration information of the source cell of the terminal device.
  • the terminal device can obtain the public configuration information of the target cell according to the sixth information.
  • the method further includes: the terminal device switches to the target cell; and sends a fourth indication message to the target network device providing services for the target cell, the fourth indication message being used to indicate the public configuration information of the second cell received by the terminal device, the second cell being included in the at least one cell, and the second cell belonging to a neighboring cell of the target cell.
  • the source cell of the terminal device broadcasts the public configuration information of its neighboring cells 2, 3, 4, and 5, and the terminal device switches from the source cell to neighboring cell 2 (i.e., the target cell); if the neighboring cells of neighboring cell 2 include neighboring cells 3, 4, and 5, the terminal device sends a fourth indication message to the target network device, the fourth indication message being used to indicate that the terminal device has received the public configuration information of neighboring cells 3, 4, and 5.
  • the terminal device sends the fourth indication information to the target network device that provides services for the target cell, so that the target network device learns the public configuration information of the cell received by the terminal device.
  • the target network device sends a handover command to the terminal device, it can decide whether to carry the configuration information of the cell or the exclusive configuration information of the terminal device in the new target cell in the handover command according to the fourth indication information.
  • the fourth indication information includes one or more of the following: an identifier of the public configuration information of the second cell, an index of the public configuration information of the second cell, an identifier of the second cell, or an index of the second cell.
  • the method further includes: the terminal device deleting public configuration information of a third cell in the at least one cell, the third cell not being a neighboring cell of the target cell.
  • the terminal device Since the third cell is not a neighboring cell of the target cell, the terminal device cannot directly switch from the target cell to the third cell, that is, the terminal device basically does not use the public configuration information of the third cell.
  • the terminal device can save storage overhead by deleting the public configuration information of the third cell.
  • an embodiment of the present application provides another communication method, which includes: a source network device sends first information, the first information includes public configuration information of at least one cell, and the first information is carried through a multicast message or a broadcast message; the source network device receives second information, and the second information is used to indicate part or all of the public configuration information of the at least one cell received by the terminal device.
  • the source network device receives the second information, and the second information is used to indicate part or all of the public configuration information of at least one cell received by the terminal device.
  • the network device can decide whether to send a handover command carrying the configuration information of the cell to the terminal device or send a handover command carrying the configuration information specific to the terminal device according to the second information, which can reduce the cell handover failure caused by the terminal device lacking the public configuration information of the cell, thereby improving the success rate of the cell handover.
  • the method is applied in a satellite communication scenario.
  • the method provided in the second aspect is applied to satellite communication scenarios, which can avoid signaling storms caused by UEs performing cell switching at the same time and improve the success rate of cell switching.
  • the public configuration information of some or all of the at least one cell received by the terminal device includes public configuration information of a first cell
  • the second information includes one or more of the following: an identifier of the public configuration information of the first cell, an index of the public configuration information of the first cell, an identifier of the first cell, or an index of the first cell.
  • the first cell may be a neighboring cell of a cell currently accessed by the terminal device.
  • the second information can accurately indicate the received common configuration information, and the signaling overhead is small.
  • the first information further includes first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell.
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, so that the terminal device feeds back the received public configuration information.
  • the method further includes: the source network device sends third information, the third information includes first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell; the first information is carried by a multicast message, and the third information is carried by a system message; or, the first information is carried by a multicast message, and the third information includes a group identifier corresponding to the terminal device and the first indication information, and the group identifier is used for the terminal device to monitor Listen to PDCCH.
  • the group identifier may be a G-RNTI.
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, so that the terminal device feeds back the received public configuration information.
  • the first indication information is further used to indicate a format of the public configuration information received by the terminal device for feedback.
  • the first indication information is also used to indicate the format of the received public configuration information fed back by the terminal device, so that the terminal device feeds back the received public configuration information in a specific format, so that the network device can accurately learn the public configuration information received by the terminal device.
  • the first indication information is used to instruct the terminal device to feed back the received public configuration information, or the first indication information is used to instruct the terminal device to feed back the cell to which the received public configuration information belongs, or the first indication information is used to instruct the terminal device to feed back the received public configuration information and the cell to which the received public configuration information belongs.
  • the network device can accurately learn the public configuration information received by the terminal device, and the signaling overhead is small.
  • the method further includes: the source network device determines to switch the terminal device to a target cell; when the public configuration information of some or all of the at least one cell received by the terminal device includes the public configuration information of the target cell, the source network device sends fourth information to the terminal device, the fourth information is used for the terminal device to switch to the target cell, and the fourth information includes configuration information specific to the terminal device.
  • the fourth information may not include the public configuration information of the target cell.
  • the source network device sends the fourth information to the terminal device.
  • the fourth information does not need to include the public configuration information of the target cell, which can save signaling overhead.
  • the method further includes: the source network device determines to switch the terminal device to a target cell; when the public configuration information of part or all of the at least one cell received by the terminal device does not include the public configuration information of the target cell, the source network device sends seventh information to the terminal device, the seventh information is used for the terminal device to switch to the target cell, and the seventh information includes the exclusive configuration information of the terminal device in the target cell and the public configuration information of the target cell. In other words, the seventh information includes the cell configuration information of the target cell.
  • the terminal device obtains the exclusive configuration information of the terminal device in the target cell and the public configuration information of the target cell.
  • the fourth information includes second indication information, and the second indication information is used to indicate that the fourth information does not carry public configuration information of the target cell, or the second indication information is used to indicate that the terminal device accesses the target cell based on the public configuration information in the system message of the target cell.
  • the fourth information includes second indication information, which indicates that the fourth information does not carry the public configuration information of the target cell or that the terminal device accesses the target cell based on the public configuration information in the system message of the target cell, thereby avoiding the terminal device from parsing the exclusive configuration information of the terminal device in the target cell in the fourth information as the configuration information of the cell.
  • the method also includes: the source network device sends fifth information, the fifth information is used for the terminal device to switch to the target cell, the fifth information includes the exclusive configuration information of the terminal device in the target cell, and does not include the public configuration information of the target cell.
  • the fifth information does not include the public configuration information of the target cell, which can save signaling overhead.
  • an embodiment of the present application provides another communication method, which includes: a target network device receives third indication information, wherein the third indication information is used to indicate that the terminal device has not received public configuration information of the target cell before switching to the target cell, and the target cell is served by the target network device; the target network device sends sixth information, and the sixth information is used by the terminal device to obtain the public configuration information of the target cell.
  • the target network device sends sixth information so that the terminal device obtains public configuration information of the target cell.
  • the sixth information includes the public configuration information of the target cell or the incremental configuration information of the public configuration information of the target cell relative to the public configuration information of the source cell of the terminal device.
  • the third indication information is carried by a third message in a random access process.
  • the third indication information is carried by the third message in the random access process, which can save signaling overhead.
  • the method further includes: the target network device receives fourth indication information from the terminal device, the fourth indication information is used to indicate the public configuration information of the second cell received by the terminal device, and the second cell belongs to the neighboring cell of the target cell.
  • the source cell of the terminal device broadcasts the public configuration information of its neighboring cells 2, 3, 4, and 5, and the terminal device switches from the source cell to neighboring cell 2 (i.e., the target cell); if the neighboring cells of neighboring cell 2 include neighboring cells 3, 4, and 5, the terminal device
  • the fourth indication information is sent to the target network, where the fourth indication information is used to indicate that the terminal device has received the public configuration information of neighboring area 3, neighboring area 4, and neighboring area 5.
  • the target network device receives the fourth indication information from the terminal device and can obtain the public configuration information of the cell received by the terminal device. In this way, when the target network device sends a handover command to the terminal device, it can decide whether to carry the configuration information of the cell or the exclusive configuration information of the terminal device in the new target cell in the handover command according to the fourth indication information.
  • the fourth indication information includes one or more of the following: an identifier of the public configuration information of the second cell, an index of the public configuration information of the second cell, an identifier of the second cell, or an index of the second cell.
  • an embodiment of the present application provides a terminal device, which has the function of implementing the behavior in the method embodiment of the first aspect above.
  • the terminal device can be a complete terminal device, or a component of a terminal device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the terminal device.
  • the functions of the terminal device can be implemented by hardware, or by hardware executing corresponding software implementations, and the hardware or software includes one or more modules or units corresponding to the above functions.
  • the terminal device includes a transceiver module and a processing module, wherein: the transceiver module is used to receive first information, the first information includes public configuration information of at least one cell, and the first information is carried by a multicast message or a broadcast message; the processing module is used to generate second information; the transceiver module is also used to send the second information, and the second information is used to indicate part or all of the public configuration information of the at least one cell received by the terminal device.
  • the transceiver module is also used to receive third information, and the third information includes first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell; the first information is carried through a multicast message, and the third information is carried through a system message; or, the first information is carried through a multicast message, and the third information includes a group identifier corresponding to the terminal device and the first indication information, and the group identifier is used by the terminal device to monitor PDCCH.
  • the transceiver module is also used to receive fourth information, and the fourth information is used to instruct the terminal device to switch to the target cell; the fourth information includes the exclusive configuration information of the terminal device in the target cell, and the public configuration information received by the terminal device includes the public configuration information of the target cell.
  • the transceiver module is further used to receive fifth information, and the fifth information is used for the terminal device to switch to the target cell.
  • the fifth information includes the terminal device's exclusive configuration information in the target cell, and the public configuration information received by the terminal device does not include the public configuration information of the target cell;
  • the processing module is further used to obtain the first public configuration information in the SIB of the target cell based on the fifth information; the terminal device accesses the target cell using the first public configuration information and the terminal device's exclusive configuration information in the target cell.
  • the processing module is specifically used to perform downlink synchronization with the target cell according to the PCI and frequency of the target cell in the fifth information; and read the first public configuration information in the SIB of the target cell through the G-RNTI corresponding to the target cell.
  • the transceiver module is further used to send third indication information, where the third indication information is used to indicate that the terminal device has not received the public configuration information of the target cell before switching to the target cell.
  • the transceiver module is further used to receive sixth information, and the sixth information is used by the terminal device to obtain public configuration information of the target cell.
  • the processing module is also used to switch the terminal device to the target cell; the transceiver module is also used to send a fourth indication message to a target network device providing services for the target cell, wherein the fourth indication message is used to indicate public configuration information of a second cell received by the terminal device, wherein the second cell is included in the at least one cell, and the second cell belongs to a neighboring cell of the target cell.
  • the processing module is further configured to delete public configuration information of a third cell among the at least one cell, where the third cell does not belong to a neighboring cell of the target cell.
  • Possible implementations of the terminal device of the fourth aspect may refer to various possible implementations of the first aspect.
  • an embodiment of the present application provides a communication device, which has the function of implementing the behavior in the method embodiment of the second aspect above.
  • the communication device can be a network device, or a component of a network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the network device.
  • the functions of the communication device can be implemented by hardware, or by hardware executing corresponding software implementations, and the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device includes a transceiver module and a processing module, wherein: the processing module is used to generate first information; the transceiver module is used to send the first information, and the first information includes public configuration information of at least one cell, and the first information Carried by multicast message or broadcast message; the transceiver module is also used to receive second information, and the second information is used to indicate part or all of the public configuration information of at least one cell received by the terminal device.
  • the transceiver module is also used to send third information, and the third information includes first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell; the first information is carried through a multicast message, and the third information is carried through a system message; or, the first information is carried through a multicast message, and the third information includes a group identifier corresponding to the terminal device and the first indication information, and the group identifier is used by the terminal device to monitor PDCCH.
  • the processing module is further used to determine to switch the terminal device to a target cell; when the public configuration information of some or all of the at least one cell received by the terminal device includes the public configuration information of the target cell, fourth information is sent to the terminal device through the transceiver module, the fourth information is used for the terminal device to switch to the target cell, and the fourth information includes the configuration information specific to the terminal device.
  • the fourth information may not include the public configuration information of the target cell.
  • the processing module is also used to determine whether to switch the terminal device to the target cell; when the public configuration information of part or all of the at least one cell received by the terminal device does not include the public configuration information of the target cell, seventh information is sent to the terminal device through the transceiver module, and the seventh information is used for the terminal device to switch to the target cell, and the seventh information includes the terminal device's exclusive configuration information in the target cell and the public configuration information of the target cell.
  • the processing module is also used to send fifth information, and the fifth information is used for the terminal device to switch to the target cell.
  • the fifth information includes the exclusive configuration information of the terminal device in the target cell, and does not include the public configuration information of the target cell.
  • Possible implementations of the communication device of the fifth aspect may refer to various possible implementations of the second aspect.
  • an embodiment of the present application provides a communication device, which has the function of implementing the behavior in the method embodiment of the third aspect above.
  • the communication device may be a network device, or a component of a network device (such as a processor, a chip, or a chip system, etc.), or a logic module or software that can implement all or part of the functions of the network device.
  • the function of the communication device may be implemented by hardware, or may be implemented by hardware executing corresponding software, and the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device includes a transceiver module and a processing module, wherein: the transceiver module is used to receive a third indication information, and the third indication information is used to indicate that the terminal device has not received the public configuration information of the target cell before switching to the target cell, and the target cell is served by the target network device; the processing module is used to generate the sixth information; the transceiver module is also used to send the sixth information, and the sixth information is used for the terminal device to obtain the public configuration information of the target cell.
  • the transceiver module is further used to receive fourth indication information from the terminal device, and the fourth indication information is used to indicate public configuration information of a second cell received by the terminal device, and the second cell belongs to a neighboring cell of the target cell.
  • Possible implementations of the communication device of the sixth aspect may refer to various possible implementations of the third aspect.
  • an embodiment of the present application provides another communication device, which includes a processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the communication device executes the method shown in any one of the first to third aspects above.
  • the process of sending information (or signal) in the above method can be understood as the process of outputting information based on the instructions of the processor.
  • the processor When outputting information, the processor outputs the information to the transceiver so that it can be transmitted by the transceiver. After the information is output by the processor, it may also need to be processed in other ways before it reaches the transceiver.
  • the processor receives input information
  • the transceiver receives the information and inputs it into the processor.
  • the information may need to be processed in other ways before it is input into the processor.
  • the processor may be a processor specifically used to execute these methods, or may be a processor that executes computer instructions in a memory to execute these methods, such as a general-purpose processor, etc.
  • the processor may also be used to execute a program stored in the memory, and when the program is executed, the communication device executes the method as shown in the first aspect or any possible implementation of the first aspect.
  • the memory is located outside the communication device. In a possible implementation, the memory is located inside the communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the communication device further includes a transceiver, and the transceiver is used to receive a signal or send a signal.
  • the present application provides another communication device, which includes a processing circuit and an interface circuit, wherein the interface circuit is used to acquire or output data; the processing circuit is used to execute the method shown in any one of the first to third aspects above.
  • the present application provides a computer-readable storage medium, in which a computer program is stored.
  • the computer program includes program instructions, which, when executed, enable the computer to execute the method shown in any one of the first to third aspects above.
  • the present application provides a computer program product, which includes a computer program, and the computer program includes program instructions, which, when executed, enable a computer to execute a method as shown in any one of the first to third aspects above.
  • the present application provides a communication system, including the terminal device described in the fourth aspect or any possible implementation of the fourth aspect, and the communication device described in the fifth aspect or any possible implementation of the fifth aspect.
  • the communication system may also include the communication device described in the sixth aspect or any possible implementation of the sixth aspect.
  • the present application provides a chip, comprising a processor and a communication interface, wherein the processor reads instructions stored in a memory through the communication interface and executes a method as shown in any one of the first to third aspects above.
  • FIG1 is a schematic diagram showing a mapping method of a ground stationary cell
  • FIG2 is a schematic diagram showing a mapping method of a terrestrial mobile cell
  • FIG3 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application.
  • FIG4 shows a schematic diagram of a CU-DU separation architecture
  • FIG5 is an interactive flow chart of a communication method provided in an embodiment of the present application.
  • FIG6 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • FIG7 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • FIG8 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • FIG9 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of the present application.
  • FIG11 is a schematic diagram of the structure of another communication device 110 provided in an embodiment of the present application.
  • FIG. 12 is a schematic diagram of the structure of another communication device 120 provided in an embodiment of the present application.
  • a process, method, system, product or equipment, etc., comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, etc., or optionally also includes other steps or units inherent to these processes, methods, products or equipment, etc.
  • a corresponds to B means that there is a corresponding relationship between A and B, and B can be determined according to A.
  • determining (or generating) B according to (or based on) A does not mean that B is determined (or generated) only according to (or based on) A, and B can also be determined (or generated) according to (or based on) A and/or other information.
  • the satellite's orbit can be divided into low orbit, the orbital altitude of the earth orbit is 160 to 2,000 km; medium orbit, the orbital altitude of the medium orbit is 2,000 to 35,786 km; geostationary orbit, the orbital altitude of the geostationary orbit is 35,786 km, and the relative position of the satellite running in this orbit to the earth is not affected by the earth's rotation.
  • Figures 1 and 2 illustrate the cell mapping method by taking the satellite implementing part or all of the functions of the evolved Node B (gNB) as an example.
  • the mapping method of ground stationary cells means that the location of the cells is stationary on the ground, and the moving satellites form these cells by adjusting their beams.
  • Figure 1 shows a schematic diagram of a mapping method for ground stationary cells.
  • gNB1 and gNB2 can be regarded as base stations on the satellite, and gNB1 and gNB2 move from right to left.
  • T1 Cell 1 and Cell 2 are covered by the beam of gNB1
  • Cell 3 and Cell 4 are covered by the beam of gNB2.
  • gNB1 and gNB2 can still adjust their beams to ensure coverage of Cell 1, Cell 2, Cell 3, and Cell 4.
  • T3 compared with time T1, gNB1 and gNB2 have moved a sufficient distance.
  • gNB1 can no longer provide coverage for Cell 2 by adjusting its beam, and gNB2 can no longer provide coverage for Cell 4 by adjusting its beam.
  • gNB2 can provide coverage for Cell 2, and gNB3 can provide coverage for Cell 4.
  • the mapping method of ground mobile cells means that the moving satellite does not dynamically adjust its beam direction, and the beam generated by the satellite moves on the ground as the satellite moves.
  • Figure 2 shows a schematic diagram of a mapping method of ground mobile cells.
  • gNB1 and gNB2 can be regarded as base stations on the satellite, and gNB1 and gNB2 move from right to left.
  • this area is covered by cells 1, 2, 3, and 4 of gNB1 and gNB2, and at time T3, this area is covered by cells 2, 3, 4, and 5 of gNB1, gNB2, and gNB3.
  • at time T1 gNB1 covers cell 1 and cell 2
  • gNB2 covers cell 3 and cell 4
  • at time T3 gNB1 covers cell 2
  • gNB2 covers cell 2 and cell 3, and gNB3 covers cell 5.
  • NTN due to the large coverage area of NTN cells, the number of users that can be accessed by a cell is huge. In some scenarios, the network needs to switch a large number of terminal devices from the serving cell to the target cell in a short time, such as the following scenarios 1 and 2.
  • Scenario 1 In a quasi-stationary cell, a satellite can provide coverage for a fixed geographical area for a period of time. Considering that the coverage area of NTN is large, there may be a large number of terminal devices in the cell. When the service satellite stops providing services to the service cell and another target satellite provides services to the area, all terminal devices in the service cell need to switch to the new cell in a short period of time, which will cause a large number of signaling storms.
  • Scenario 2 Regardless of whether it is a quasi-stationary cell or a mobile cell, when the feeder link is switched, for example, the satellite switches from gNB1 to gNB2, all terminal devices in gNB1 must be switched to gNB2 at the same time, which will also cause a signaling storm.
  • the public configuration information of the cell and the dedicated configuration information of the terminal device in the cell are the public configuration information of the cell and the dedicated configuration information of the terminal device in the cell
  • the switching signaling (a command used to implement cell switching of a terminal device) includes the public configuration information of the target cell and the exclusive configuration information of the terminal device in the target cell.
  • the target cell refers to the cell to which the terminal device is to be switched.
  • the terminal device can switch from the currently connected source cell to the target cell according to the switching signaling.
  • the public configuration information of the target cell is for all terminal devices that need to access the target cell.
  • the public configuration information of the target cell in different switching commands is the same. For example, switching signaling 1 is used for terminal device 1 to switch from source cell 1 to the target cell, and switching signaling 2 is used for terminal device 2 to switch from source cell 1 to the target cell.
  • the public configuration information of the target cell in switching signaling 1 is the same as the public configuration information of the target cell in switching signaling 2.
  • the exclusive configuration information of the terminal device in the target cell is the exclusive configuration information of the terminal device. In other words, the exclusive configuration information of any two terminal devices in the target cell is different, and is the configuration information individually allocated by the target cell to each terminal device.
  • the terminal device uses the public configuration information of the target cell and the exclusive configuration information of the terminal device in the target cell. Only then can you switch from the currently connected source cell to the target cell.
  • the existing solution of sending the public configuration information of the target cell to the UE by multicast or broadcasting to achieve cell switching has the problem of low switching success rate. Therefore, it is necessary to study how to improve the success rate of cell switching.
  • the embodiment of the present application provides a communication solution that can improve the success rate of cell switching while saving signaling overhead.
  • the embodiment of the present application also provides a communication solution for switching to the target cell using a switching command that does not carry the public configuration information of the target cell.
  • the following introduces the system architecture applicable to the communication solution provided by the embodiment of the present application.
  • FIG3 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application.
  • the network elements involved in the system architecture mainly include: a terminal device, a core network device, and one or more access network devices (only two are shown).
  • the wireless communication system may be composed of multiple cells, each of which includes one or more access network devices, and the access network device provides communication services to multiple terminal devices.
  • multiple terminal devices can communicate with each other.
  • the terminal device is located within the coverage of one or more cells (carriers) provided by the access network device, that is, there may be one or more cells serving the terminal device.
  • the terminal device in the wireless communication system can perform cell switching, that is, switching from the currently accessed cell to other cells, for example, switching to a cell that can provide better services for the terminal device.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • terminal equipment is a handheld device or vehicle-mounted device with wireless connection function.
  • some examples of terminal devices are: mobile phones, tablet computers, laptops, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, subscriber units, cellular phones, wireless data cards, personal digital assistants (PDA), laptop computers, machine type communication (MTC) terminals, drones, etc.
  • the terminal device can be any form of terminal in the communication system of 5G and its evolution after 5G, etc., and this application does not limit this.
  • Access network equipment refers to the radio access network (RAN) node (or device) that connects the terminal device to the wireless network, which can also be called a base station.
  • RAN nodes are: evolved Node B (gNB), transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wifi) access point (AP), satellite, integrated access and backhaul (IAB), etc.
  • gNB evolved Node B
  • TRP transmission reception point
  • eNB evolved Node B
  • RNC radio network controller
  • NB Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station e.g., home evolved Node B, or home Node B, HNB
  • BBU base band unit
  • Wi-Fi wireless
  • the access network device may be a RAN device including a centralized unit (CU) node or a distributed unit (DU) node, or may be a RAN device including a CU node and a DU node.
  • the RAN device including the CU node and the DU node splits the protocol layer of the gNB in the new radio (NR) system, places the functions of some protocol layers under the centralized control of the CU, and distributes the functions of the remaining part or all of the protocol layers in the DU, which is centrally controlled by the CU.
  • the CU may be divided into a control plane (CU-CP) and a user plane (CU-UP).
  • CU-CP control plane
  • CU-UP user plane
  • FIG. 4 shows a schematic diagram of a CU-DU separation architecture.
  • Each DU is connected to the CU through the F1 logical interface.
  • the radio link control (RLC) layer, media access control (MAC) layer and physical layer (PHY) related operations are handled by the DU.
  • the service data adaptation protocol (SDAP) layer, radio resource control (RRC) layer and packet data convergence protocol (PDCP) layer related operations are handled by the CU.
  • the CU-CP is responsible for the control plane function, mainly including RRC and the PDCP corresponding to the control plane, namely PDCP-C.
  • PDCP-C is mainly responsible for the encryption and decryption, integrity protection, data transmission, etc. of the control plane data.
  • CU-UP is responsible for the user plane function, mainly including SDAP and the PDCP corresponding to the user plane, namely PDCP-U.
  • SDAP is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • PDCP-U is mainly responsible for encryption and decryption, integrity protection, header compression, sequence number maintenance, data transmission, etc. of the data plane.
  • CU-CP and CU-UP are connected through the E1 interface.
  • CU-CP represents the connection between CU and the core network through the Ng interface.
  • CU-CP is connected to DU through the F1 interface control plane (i.e. F1-C).
  • CU-UP is connected to DU through the F1 interface user plane (i.e. F1-U).
  • F1 interface control plane i.e. F1-C
  • CU-UP is connected to DU through the F1 interface user plane (i.e. F1-U).
  • F1-U F1 interface user plane
  • Core network equipment refers to equipment in the core network (CN) that provides service support for terminal equipment.
  • core network equipment include: access and mobility management function (AMF) entity, session management function (SMF) entity, user plane function (UPF) entity, etc. They are not listed one by one.
  • AMF access and mobility management function
  • SMF session management function
  • UPF user plane function
  • the above-mentioned AMF entity can be responsible for the access management and mobility management of the terminal;
  • the above-mentioned SMF entity can be responsible for session management, such as user session establishment, etc.;
  • the above-mentioned UPF entity can be a functional entity of the user plane, mainly responsible for connecting to the external network.
  • the entity in this application can also be referred to as a network element or a functional entity.
  • the AMF entity can also be referred to as an AMF network element or an AMF functional entity.
  • the SMF entity can also be referred to as an SMF network element or an SMF functional entity, etc.
  • the communication scheme provided in the embodiment of the present application is also applicable to other communication systems.
  • satellite communication systems Internet of Things (IoT) networks or Vehicle to X (V2X) wireless local area network systems, universal mobile telecommunication systems (UMTS), wireless local area networks (WLAN), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD), fifth generation (5G) communication systems, and future sixth generation (6G) communication systems.
  • IoT Internet of Things
  • V2X Vehicle to X
  • UMTS universal mobile telecommunication systems
  • WLAN wireless local area networks
  • LTE long term evolution
  • FDD LTE time division duplex
  • 5G fifth generation
  • 6G future sixth generation
  • the communication scheme provided in the embodiment of the present application is also applicable to other communication systems that need to switch a large number of terminal devices from a serving cell to a target cell in a short time.
  • FIG5 is an interactive flow chart of a communication method provided in an embodiment of the present application. As shown in FIG5 , the method includes:
  • a source network device sends first information.
  • the terminal device receives the first information.
  • the source network device is an access network device that provides services for the cell currently accessed by the terminal device, that is, an access network device that manages the cell currently accessed by the terminal device.
  • the cell currently accessed by the terminal device is a cell managed by the source network device.
  • the first information includes public configuration information of at least one cell.
  • the at least one cell is adjacent to the source cell currently accessed by the terminal device.
  • at least one cell is a cell adjacent to the source cell currently accessed by the terminal device.
  • the first information includes public configuration information of cell 1, public configuration information of cell 2, and public configuration information of cell 3, and cell 1, cell 2, and cell 3 are all adjacent to the cell currently accessed by the terminal device.
  • the above-mentioned first information is carried by a multicast message or a broadcast message.
  • the source network device sends the first information may be: the source network device sends a multicast message or a broadcast message carrying the first information.
  • the terminal device receives a multicast message or a broadcast message carrying the first information.
  • the broadcast message is a system message of the cell currently accessed by the terminal device.
  • the public configuration of the cell in the first information (corresponding to the public configuration information) has two possible forms. One is to directly send the configuration of the cell, which is an absolute configuration; the other is a differential configuration relative to the public configuration of the source cell, which can also be called an incremental configuration, also known as a delta configuration.
  • the terminal device After the terminal device receives the differential configuration, it needs to convert it to the configuration of the target cell based on the public configuration of the source cell.
  • the source network device sending the incremental configuration may reduce the overhead relative to sending the cell configuration, but the premise is that the public configuration of the source cell, that is, the public configuration information of the source cell, needs to be sent.
  • the first information further includes first indication information, and the first indication information is used to indicate that the terminal device sends the second information after receiving the public configuration information of the cell, that is, feedback the received public configuration information.
  • the first indication information may be included in the public configuration information of the cell, or may not be included in the public configuration information of the cell.
  • the embodiment of the present application does not limit the format of the first indication information.
  • a possible format of the first indication information is as follows: the first indication information includes a Boolean value, when the Boolean value is true (true), the terminal device feedbacks the received public configuration information, for example, sends the second information; when the Boolean value is false (false), the terminal device does not feedback the received public configuration information.
  • the first indication information includes one or more bits, when the first information carries the one or more bits, the terminal device feedbacks the received public configuration information; when the first information does not carry the one or more bits, the terminal device feedbacks the received public configuration information.
  • the terminal device when the first information carries the first indication information, the terminal device feedbacks the received public configuration information based on the first information; when the first information does not carry the first indication information, the terminal device does not feedback the received public configuration information based on the first information.
  • the first indication information includes one or more bits, and when the value represented by the one or more bits is 1, the terminal device feeds back the received public configuration information based on the first information; when the value represented by the one or more bits is 2, the terminal device does not feed back the received public configuration information based on the first information, and the value 1 is different from the value 2.
  • the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, so that the terminal device feeds back the received public configuration information.
  • the first indication information is also used to indicate the format of the public configuration information received by the terminal device, that is, the format of the second information.
  • the first indication information is also used to indicate the format of the public configuration information received by the terminal device, which can be understood as follows: the first indication information is also used to indicate the terminal device through which content to indicate the received public configuration information, or to indicate the terminal device to feedback which content of the received public configuration information to the source cell.
  • the first indication information is used to indicate that the terminal device only feeds back the public configuration information of the received cell, but does not feed back the specific information of the received cell; it may also indicate that the terminal device needs to feed back which specific cells’ public configuration information is received, etc.
  • the first indication information is used to indicate that the terminal device only feeds back the received public configuration information of the cell.
  • the first indication information indicates that the terminal device feeds back the received public configuration information, that is, does not feed back the information of the cell corresponding to the received public configuration information; the terminal device can only feed back the index and/or identifier of the received public configuration information according to the first indication information.
  • the first indication information is used to instruct the terminal device to feed back the cell to which the received public configuration information belongs, and the terminal device can only feed back the index and/or identifier of the cell to which the received public configuration information belongs according to the first indication information.
  • the first indication information is used to instruct the terminal device to feed back the received public configuration information and the cell to which the received public configuration information belongs, and the terminal device can feed back the index and/or identifier of the cell to which the received public configuration information belongs, and the index or identifier of the received public configuration information according to the first indication information.
  • a possible format of the first indication information is as follows: the first indication information includes one or more bits, and if the one or more bits represent a value of 3, the first indication information is used to instruct the terminal device to feed back only the received public configuration information; if the one or more bits represent a value of 4, the first indication information is used to instruct the terminal device to feed back only the cell to which the received public configuration information belongs; if the one or more bits represent a value of 5, the first indication information is used to instruct the terminal device to feed back the received public configuration information and the cell to which the received public configuration information belongs.
  • the terminal device and the source network device agree on the format of the public configuration information received by the terminal device; the first indication information includes a Boolean value, when the Boolean value is true (true), the terminal device feeds back the received public configuration information; when the Boolean value is false (false), the terminal device does not feed back the received public configuration information.
  • the embodiment of the present application does not limit the format of the first indication information.
  • the first indication information is also used to indicate the format of the public configuration information received by the terminal device, so that the terminal device feeds back the received public configuration information in a specific format. In this way, the network device can accurately know the public configuration information received by the terminal device.
  • the source network device (e.g., a base station) does not send the first indication information to the terminal device, but stipulates that the terminal device needs to provide feedback when it receives the public configuration of the cell.
  • the feedback rule can also be agreed upon, that is, the format of the public configuration information received by the terminal device.
  • the source network device stipulates that the terminal device needs to provide feedback when it receives the public configuration of the cell, which can save signaling overhead.
  • the terminal device sends second information to the source network device.
  • the source network device receives the second information from the terminal device.
  • the second information is used to indicate the public configuration information of some or all of the at least one cell received by the terminal device.
  • the second information can be carried by an RRC message, a MAC control element (MAC CE), or other messages.
  • the second information can be carried by one or more messages.
  • a possible implementation of step 502 is as follows: the terminal device sends an RRC message carrying the second information to the source network device.
  • a possible implementation of step 502 is as follows: the terminal device sends a MAC CE carrying the second information to the source network device.
  • the source network device can carry the public configuration information of multiple cells through one message, that is, the source network device only sends one multicast message or broadcast message carrying the first information; the terminal device only sends the second information to the source network device for the multicast message or broadcast message carrying the first information.
  • the source network device carries the public configuration information of multiple cells through multiple messages, and each message carries the public configuration information of one or more cells, that is, the source network device sends multiple multicast messages or broadcast messages carrying similar first information; the terminal device sends information similar to the second information to the source network device for each message.
  • the source network device sends multicast message 1 and multicast message 2 to the terminal device, multicast message 1 includes the common configuration information of cell 1 and cell 2, and multicast message 2 includes the common configuration information of cell 3 and cell 4;
  • the terminal device sends message 1 to the source network device in response to multicast message 1, and message 1 indicates that the terminal device has received the common configuration information of cell 1 and cell 2;
  • the terminal device sends message 2 to the source network device in response to multicast message 2, and message 2 indicates that the terminal device has received the common configuration information of cell 3 and cell 4.
  • the terminal successfully parses part of the first information, and fails to parse part of the first information, then the terminal device feedback is the cell in the received first information.
  • the terminal cannot feedback the first information that was not successfully parsed or not received.
  • the source network device sends multicast message 1 and multicast message 2 to the terminal device, multicast message 1 includes the common configuration information of cell 1 and cell 2, and multicast message 2 includes the common configuration information of cell 3 and cell 4; the terminal device sends message 1 to the source network device in response to multicast message 1, and message 1 indicates that the terminal device has received the common configuration information of cell 1 and cell 2; the terminal device does not receive or parse multicast message 2 successfully, and the terminal device does not provide feedback for multicast message 2, that is, does not reply to message 2.
  • the purpose of the terminal device sending the second information to the source network device is to feed back the public configuration information received by the terminal device to the source network device.
  • Part or all of the public configuration information of the at least one cell received by the terminal device refers to part or all of the public configuration information of the at least one cell received by the terminal device.
  • the at least one cell may be K cells, and part of the public configuration information of the K cells refers to the public configuration information of F cells among the K cells, where K is an integer greater than 1, and F is an integer less than K and greater than 0.
  • the first information includes the public configuration information of K cells, and the second information is used to indicate the public configuration information of some or all of the K cells received by the terminal device, where K is an integer greater than 1.
  • the first information includes the public configuration information of cell 1, cell 2, and cell 3, and the second information is used to indicate that the terminal device has received the public configuration information of cell 1, cell 2, and cell 3.
  • the first information includes the public configuration information of cell 1, cell 2, and cell 3, and the second information is used to indicate that the terminal device has received the public configuration information of cell 1 and cell 2.
  • the common configuration information of some or all of the at least one cell received by the terminal device includes the public configuration information of the first cell, and the second information includes one or more of the following: the identifier (ID) of the public configuration information of the first cell, the index (index) of the public configuration information of the first cell, the identifier (ID) of the first cell, or the index of the first cell.
  • the first cell is only an example. Some or all of the at least one cell received by the terminal device may also include other cells.
  • the index of the public configuration information may be referred to as the serial number of the public configuration information.
  • the index of the first cell may be referred to as the serial number of the cell.
  • Both the index of the public configuration information and the identifier of the public configuration information may indicate which public configuration information the terminal device has received.
  • the first information includes the public configuration information of cell A, cell B, and cell C, see Table 1. If 1, 2, and 3 in Table 1 represent the public configuration, then 1, 2, and 3 are the indexes of the public configuration. If 1, 2, and 3 in Table 1 represent the cell, then 1, 2, and 3 are the indexes of the cell. A, B, and C in Table 1 are the identifiers of the cell.
  • the identifier of a cell is used to identify the identity of the cell.
  • the identifier of the first cell is used to identify the identity of the first cell.
  • the identifier of the cell may be a global cell identifier (cell global identifier, CGI), or a physical cell identifier (physical cell identifier, PCI), or other identifiers.
  • the index of the cell may indicate which cells' public configuration information has been received by the terminal device.
  • the embodiment of the present application does not limit the specific content included in the second information, as long as the second information can indicate the public configuration information received by the terminal device.
  • the source network device may implicitly or indirectly indicate the identifier or index of the public configuration.
  • the order of the public configuration information is the identifier or index of the public configuration information.
  • the second information includes the identifier or index of the public configuration information of the first cell.
  • the second information includes the index or identifier of the first cell.
  • the second information includes the identifier of the public configuration information of the first cell and the identifier of the first cell.
  • the second information includes the index of the first cell and the identifier of the first cell. It should be understood that the above examples are only illustrative of some examples and are not exhaustive here.
  • the public configuration information of some or all of the above-mentioned at least one cell received by the terminal device may also include the public configuration information of other cells, and the first cell is only an example.
  • the terminal device after receiving the first indication information, the terminal device sends the second information to the source network device according to the public configuration information of the received cell, that is, feedbacks the received public configuration information.
  • the public configuration information of some or all of the cells of at least one cell received by the terminal device includes the public configuration information of cell 1 (i.e., the first cell) and cell 2, and the second information includes the index of cell 1 and the index of cell 2.
  • the public configuration information of some or all of the cells of at least one cell received by the terminal device includes the public configuration information of cell 1 (i.e., the first cell) and cell 2, and the second information includes the index of the public configuration information of cell 1 and the public configuration information of cell 2.
  • the second information can accurately indicate the received public configuration information, and the signaling overhead is small.
  • a terminal device sends a second information, which is used to indicate part or all of the public configuration information of at least one cell received by the terminal device, so that the network device decides whether to send a switching command carrying the configuration information of the cell to the terminal device based on the second information, or to send a switching command carrying the configuration information specific to the terminal device.
  • FIG6 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • the method flow in FIG6 is a possible implementation of the method described in FIG5.
  • different messages are used to carry the common configuration information and the first indication information of the cell; signaling overhead can be saved and the success rate of cell switching can be improved.
  • the method includes:
  • a source network device sends first information.
  • Step 601 can refer to step 501.
  • the source network device can obtain the public configuration information of the cells of the network devices in the surrounding neighboring areas through any of the following methods.
  • Method 1 The public configuration information of the cell is exchanged through the interface message between the network devices, such as through XN establishment request, XN establishment response, configuration update message (NG-RAN NODE CONFIGURATION UPDATE), and configuration update confirmation message (NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE).
  • the public configuration information of one or more cells on the interactive network device When the public configuration information of the cell is updated, it needs to be updated through the interface message.
  • Method 2 Obtain the public configuration information of the neighboring area through operation and maintenance (O&M), which can be that the source network device sends a request message to O&M, and the request message carries the requested cell list.
  • O&M sends the public configuration information of the target cell to the source network device, where O&M is responsible for monitoring and managing the network devices in the communication network.
  • the network manager has a neighbor relationship list of network devices (such as base stations), and sends the neighbor configuration to the network device according to the neighbor relationship list. Accordingly, all network devices connected to the network manager send the public configuration information of the cells in the network devices to the network manager.
  • the source network device sends third information.
  • the terminal device receives the first information.
  • the order of step 601 and step 602 is not limited.
  • the third information includes the first indication information, and the first indication information is used to instruct the terminal device to send the second information after receiving the public configuration information of the cell, that is, to feed back the received public configuration information.
  • the possible implementation methods of the first indication information can be found in the above description, which will not be repeated here.
  • the first information is carried by a multicast message
  • the third information is carried by a system message, for example, the third information
  • the information is carried by the system information of the cell to which the terminal device is currently connected.
  • the first information is carried by a multicast message
  • the third information includes a group identifier (e.g., G-RNTI) corresponding to the terminal device and the first indication information.
  • G-RNTI group identifier
  • the first indication information is configured to the terminal device when the GRNTI is configured for the terminal device.
  • the first information and the third information are carried by different multicast messages.
  • the terminal device sends second information to the source network device.
  • the source network device receives the second information from the terminal device.
  • Step 603 may refer to step 502 .
  • the source network device determines to switch the terminal device to the target cell.
  • the target cell may be a cell adjacent to the source cell currently accessed by the terminal device.
  • Step 604 is optional.
  • the target network device is an access network device that provides services for the target cell, that is, an access network device that manages the target cell.
  • the source network device sends fourth information to the terminal device.
  • the fourth information is used for the terminal device to switch to the target cell.
  • the fourth information may include an identifier or index of the target cell.
  • the fourth information may be carried by a switching command.
  • the fourth information includes the exclusive configuration information of the terminal device in the target cell.
  • the fourth information may not include the public configuration information of the target cell.
  • the public configuration information of part or all of the cells of at least one cell received by the terminal device can be understood as: the public configuration information of the cell received by the terminal device determined by the source network device according to the second information.
  • Step 605 can be replaced by: in the case of determining that the public configuration information of the cell already owned by the terminal device includes the public configuration information of the target cell, the source network device sends the fourth information to the terminal device.
  • the source network device sends the fourth information to the terminal device.
  • the source network device may determine the public configuration information of the cell already owned by the terminal device based on information from the terminal device (e.g., the second information).
  • the source network device may also determine the public configuration information of the cell already owned by the terminal device in other ways, which is not limited in the embodiments of the present application.
  • Step 605 may be replaced by: in the case where the public configuration information of part or all of the cells of at least one cell received by the terminal device does not include the public configuration information of the target cell, the source network device sends the seventh information to the terminal device.
  • the above-mentioned seventh information is used for the above-mentioned terminal device to switch to the above-mentioned target cell.
  • the seventh information may be carried by a switching command.
  • the above-mentioned seventh information includes the proprietary configuration information required by the above-mentioned terminal device to access the above-mentioned target cell and the public configuration information of the above-mentioned target cell.
  • the seventh information includes all the configuration information required for the above-mentioned terminal device to access the above-mentioned target cell.
  • step 605 may be replaced by: in the case of determining that the public configuration information of the cell already held by the terminal device does not include the public configuration information of the target cell, the source network device sends the seventh information to the terminal device.
  • the fourth information includes second indication information, and the second indication information is used to indicate that the fourth information does not carry the public configuration information of the target cell.
  • the second indication information is used to indicate that the terminal device accesses the target cell based on the public configuration information in the system message of the target cell.
  • a possible format of the second indication information is as follows: the second indication information includes a Boolean value, and when the Boolean value is true (true), the second indication information is used to indicate that the fourth information does not carry the public configuration information of the target cell; when the Boolean value is false (false), the second indication information is used to indicate that the fourth information carries the public configuration information of the target cell.
  • the second indication information includes one or more bits, and if the fourth information does not carry the public configuration information of the target cell, the fourth information carries the one or more bits, that is, the second indication information; if the fourth information carries the public configuration information of the target cell, the fourth information does not carry the one or more bits, that is, the second indication information.
  • the second indication information includes one or more bits, and when the value represented by the one or more bits is 5, the second indication information is used to indicate that the fourth information does not carry the public configuration information of the target cell; when the value represented by the one or more bits is 6, the second indication information is used to indicate that the fourth information carries the public configuration information of the target cell, and the values 5 and 6 are different.
  • the fourth information includes the second indication information
  • the second indication information indicates that the fourth information does not carry the public configuration information of the target cell or the terminal device accesses the target cell based on the public configuration information in the system message of the target cell, which can prevent the terminal device from parsing the exclusive configuration information of the terminal device in the target cell in the fourth information as the configuration information of the cell.
  • the terminal device accesses the target cell using the public configuration information of the target cell and the dedicated configuration information of the terminal device in the target cell.
  • the terminal device Before executing step 606, the terminal device may obtain the public configuration information of the target cell from storage or cache, and obtain the terminal device's dedicated configuration information in the target cell according to the fourth information to access the target cell. Steps 605 and 606 are optional and not necessary.
  • different messages carry the common configuration information of the cell and the first indication information
  • the terminal device sends the second information according to the first indication information.
  • the network device decides whether to send a handover command carrying the configuration information of the cell to the terminal device or a handover command carrying the configuration information specific to the terminal device according to the second information, which can reduce the failure of cell handover caused by the lack of common configuration information of the cell in the terminal device, thereby improving the success rate of cell handover.
  • FIG7 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • the method flow in FIG7 is a possible implementation of the method described in FIG5. As shown in FIG7, the method includes:
  • the source network device sends a multicast message carrying a G-RNTI.
  • the source network device may first group multiple terminal devices (for example, multiple terminal devices within the cell of the source network device) and assign different group identifiers, i.e., G-RNTIs, to terminal devices in different groups. Specifically, the G-RNTI in each group is the same, and the G-RNTIs between different groups are different.
  • the terminal device can monitor the public configuration information of the candidate cell sent on the PDCCH through the G-RNTI.
  • Step 701 can be understood as: the source network device assigns different group identifiers to terminal devices in different groups.
  • terminal device 1, terminal device 2, and terminal device 3 are taken as examples to describe the operations that the terminal device may perform. It should be understood that in actual applications, the number of terminal devices in the cell of the source network device may be more or less.
  • Figure 7 is only an example. Terminal device 1, terminal device 2, and terminal device 3 are in the same group.
  • Step 701 is optional. Step 701 can be replaced by: each terminal device generates a G-RNTI according to a certain rule.
  • the source network device sends the specification of the G-RNTI in the system message, such as the GRNTI in area A is GRNTI-1, and the GRNTI in area B is GRNTI-2, and the UE determines the G-RNTI based on its own location information.
  • the terminal device can also determine the G-RNTI in other ways, which is not limited to the embodiments of the present application.
  • the source network device sends a multicast message carrying common configuration information of cell 1, cell 2, and cell 3.
  • the source network device can indicate the location of the physical downlink shared channel (PDSCH) through the PDCCH scrambled by G-RNTI, and send a multicast message carrying the public configuration information of one or more cells on the PDSCH.
  • the terminal device e.g., terminal device 1, terminal device 2, terminal device 3 obtains the time-frequency domain position of the PDSCH after monitoring the PDCCH according to the G-RNTI, and the terminal receives the multicast message from the source network device at the time-frequency domain position of the PDSCH.
  • the source network device can send the public configuration information of cell 1, cell 2, and cell 3 in a multicast manner.
  • a multicast message may include the public configuration information of one or more cells.
  • the source network device may also send multiple multicast messages, each of which includes the public configuration information of one or more cells.
  • the source network device sends one multicast message, which carries the common configuration information of cells 1, 2, and 3.
  • the source network device sends two multicast messages, message 1 carries the common configuration information of cells 1 and 2, and message 2 carries the common configuration information of cell 3.
  • Step 701 and step 702 may be replaced by: the source network device sends a system message carrying common configuration information of cell 1 , cell 2 , and cell 3 .
  • Terminal device 1 sends feedback information 1 to the source network device.
  • Feedback information 1 is used to indicate that terminal device 1 has received the common configuration information of cell 1, cell 2, and cell 3.
  • Feedback information 1 can be carried in one or more messages.
  • the source network device sends a multicast message carrying the common configuration information of cell 1, cell 2, and cell 3, and terminal device 1 sends a message carrying feedback information 1 to the source network device.
  • the source network device sends 2 multicast messages, message 1 carries the common configuration information of cell 1 and cell 2; message 2 carries the common configuration information of cell 3; the terminal device sends 2 messages to the source network device, the feedback information carried in one message indicates that the common configuration information of cell 1 and cell 2 has been received, and the feedback information carried in the other message indicates that the common configuration information of cell 3 has been received.
  • the source network device sends a switching command 1 to the terminal device 1 according to the feedback information 1.
  • the handover command 1 is used for the terminal device 1 to switch to the target cell.
  • the target cell is cell 3.
  • the handover command 1 includes the exclusive configuration information of the terminal device 1 in the target cell, and does not include the public configuration information of the target cell.
  • the source network device may determine to switch the terminal device 1 to the target cell 3.
  • a possible implementation of step 704 is as follows: the source network device determines, based on the feedback information 1, that the terminal device 1 receives the public configuration information of the target cell; and sends the handover command 1 to the terminal device 1.
  • Terminal device 1 accesses the target cell according to the exclusive configuration information of terminal device 1 in the target cell and the public configuration information of the target cell.
  • Terminal device 2 sends feedback information 2 to the source network device.
  • Feedback information 2 is used to indicate that terminal device 1 has received common configuration information of cell 1 and cell 2.
  • the source network device sends a switching command 2 to the terminal device 1 according to the feedback information 2 .
  • the switching command 2 is used for the terminal device 2 to switch to the target cell.
  • the target cell is cell 3.
  • the switching command 2 includes the exclusive configuration information of the terminal device 2 in the target cell, and the public configuration information of the target cell.
  • the switching command 2 includes the configuration information required for the terminal device to access the target cell 3, including the cell public configuration and the terminal device exclusive configuration.
  • the source network device may determine to switch the terminal device 1 to the target cell.
  • a possible implementation of step 707 is as follows: the source network device determines, based on feedback information 2, that the terminal device 2 has not received the public configuration information of the target cell; and sends a switching command 2 to the terminal device 2.
  • Terminal device 2 accesses the target cell according to the proprietary configuration information of terminal device 2 in the target cell and the public configuration information of the target cell.
  • the source network device can determine whether the terminal device has received the public configuration information of the target cell according to the feedback information of the terminal device, and then respond according to whether the terminal device has received the public configuration information of the target cell. For example, if terminal device 1 receives the public configuration information of the target cell, the source network device sends a switching command that does not carry the public configuration information of the target cell to terminal device 1. For another example, if terminal device 2 does not receive the public configuration information of the target cell, the source network device sends a switching command that carries the public configuration information of the target cell to terminal device 2. Steps 703 to 705 can be regarded as the switching process of terminal device 1, and steps 706 to 708 can be regarded as the switching process of terminal device 2. The order of these two switching processes is not limited.
  • the source network device sends a switching command 3 to the terminal device 3.
  • the handover command 3 is used for the terminal device 3 to handover to the target cell.
  • the target cell is cell 3.
  • the handover command 3 includes the dedicated configuration information of the terminal device 3 in the target cell, but does not include the public configuration information of the target cell.
  • Terminal device 3 obtains the first public configuration information in the SIB of the target cell according to switching command 3.
  • the public configuration information received by the terminal device 3 does not include the public configuration information of the above-mentioned target cell.
  • the public configuration information of the cell already held by the terminal device 3 does not include the public configuration information of the above-mentioned target cell.
  • a possible implementation of step 710 is as follows: in the case where the public configuration information received by the terminal device 3 does not include the public configuration information of the target cell, the terminal device 3 obtains the first public configuration information in the SIB of the target cell according to the switching command 3. It should be noted that the public configuration information in one or more SIBs in the system message of the target cell, i.e., the first public configuration information, is similar to the public configuration information of the target cell.
  • Terminal device 3 accesses the target cell using the first public configuration information and the dedicated configuration information of terminal device 3 in the target cell.
  • Steps 709 to 711 are optional. Steps 709 to 711 illustrate a process in which a terminal device that has not received the public configuration information of the target cell accesses the target cell after receiving a handover command that does not carry the public configuration information of the target cell.
  • the method flow in Figure 7 is applied to satellite communication scenarios, such as the above-mentioned scenarios 1 and 2.
  • the method flow in Figure 7 is applicable.
  • the cell switching process executed by terminal device 1, terminal device 2, and terminal device 3 can be understood as an example of a terminal device in a cell of a source network device switching to a target cell of a target network device in a short period of time.
  • the cell in the embodiment of the present application can be a quasi-stationary cell or a mobile cell.
  • the terminal device sends feedback information to the source network device to feed back the public configuration information of the cell received by each terminal device.
  • the network device decides whether to send a handover command carrying the configuration information of the cell to the terminal device or a handover command carrying the configuration information specific to the terminal device according to the feedback information of each terminal device, which can reduce the cell handover failure caused by the terminal device lacking the public configuration information of the cell, thereby improving the success rate of the cell handover.
  • Figure 8 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • the method flow in Figure 8 can be an independent method flow, or it can be combined with the method flow in Figure 5.
  • the terminal device and the source network device execute the method flow in Figure 8.
  • the method flow in Figure 8 is a possible implementation of the method described in Figure 5.
  • the terminal device uses the public configuration information in the system message of the target cell and the terminal device's proprietary configuration information in the target cell to access the target cell; the success rate of cell switching can be improved.
  • the method includes:
  • the source network device determines to switch the terminal device to the target cell.
  • the target cell may be a cell adjacent to the source cell currently accessed by the terminal device.
  • Step 801 may refer to step 604. Step 801 is optional.
  • the source network device sends fifth information to the terminal device.
  • the terminal device receives the fifth information from the source network device.
  • the fifth information is used for the terminal device to switch to the target cell.
  • the fifth information can be carried by the switching command.
  • the fifth information includes the exclusive configuration information of the terminal device in the target cell, and does not include the public configuration information of the target cell.
  • the terminal device obtains the first public configuration information in the SIB of the target cell according to the fifth information.
  • the public configuration information received by the terminal device does not include the public configuration information of the target cell mentioned above.
  • the public configuration information of the cell already owned by the terminal device does not include the public configuration information of the target cell mentioned above.
  • a possible implementation method of step 803 is as follows: in the case where the public configuration information received by the terminal device does not include the public configuration information of the target cell, the terminal device obtains the first public configuration information in the SIB of the target cell according to the fifth information. It should be noted that the public configuration information in one or more SIBs in the system message of the target cell, that is, the first public configuration information, is similar to the public configuration information of the target cell.
  • the terminal device can access the target cell based on the public configuration information in one or more SIBs in the system message of the target cell and the terminal device's proprietary configuration information in the target cell.
  • the embodiments of the present application do not limit the specific content of the first public configuration information.
  • the first public configuration information is the configuration information in the system message used for terminal device access.
  • the first public configuration information may be the same as the public configuration information of the target cell, or the first public configuration information may be different from the public configuration information of the target cell.
  • the terminal device can initiate access to the target cell through the first public configuration information in the system message of the target cell, This may include random access. Since the terminal device needs to read the system message, this will increase the switching delay of switching to the target cell.
  • the first public configuration information includes part of the public configuration information of the target cell, and other information that can be used to access the target cell.
  • the fifth information may include the PCI and frequency of the target cell; the terminal device may obtain the first public configuration information in the SIB of the target cell according to the fifth information by: performing downlink synchronization with the target cell according to the PCI and frequency of the target cell in the fifth information, and reading the master information block (MIB) of the target cell; reading SIB1 according to the information provided by the MIB, and then reading the first public configuration information in SIB1 and/or other system messages, such as SIB19, through SIB1.
  • MIB master information block
  • the target network device periodically broadcasts in the SIB relevant information of the public configuration information of the cell during switching, such as the location of the PDCCH, which is used to indicate the time-frequency domain information of the PDSCH, and the PDSCH contains the public configuration information of the target cell during switching.
  • the terminal device reads the first public configuration information in the SIB according to a G-RNTI.
  • the G-RNTI may be agreed upon in advance by the terminal device and the source network device, for example, the generation rule of the G-RNTI may be sent in a system message, such as indicating the correspondence between the location area and the GRNTI, and the terminal device obtains the GRNTI corresponding to the location area according to the location area to which the terminal device belongs; it may also be sent to the terminal device in a switching signaling carrying the fifth information.
  • the generation rule of the G-RNTI may be sent in a system message, such as indicating the correspondence between the location area and the GRNTI, and the terminal device obtains the GRNTI corresponding to the location area according to the location area to which the terminal device belongs; it may also be sent to the terminal device in a switching signaling carrying the fifth information.
  • the terminal device initiates random access to the target cell using the first public configuration information and the dedicated configuration information of the terminal device in the target cell.
  • the terminal device sends third indication information to the target network device.
  • the target network device receives the third indication information from the terminal device.
  • the target network device may be an access network device that provides services for the target cell.
  • the target network device manages the target cell.
  • the third indication information is used to indicate that the above-mentioned terminal device has not received the public configuration information of the above-mentioned target cell before switching to the above-mentioned target cell.
  • the above-mentioned third indication information is carried by the third message (i.e., Msg3) in the random access process.
  • Step 805 is optional.
  • a possible implementation of step 805 is as follows: the terminal device initiates random access to the target cell and carries the third indication information in Msg3.
  • the target network device sends sixth information to the terminal device according to the third indication information.
  • the terminal device receives the sixth information from the target network device.
  • the sixth information is used by the terminal device to obtain the public configuration information of the target cell.
  • the sixth information may include the public configuration information of the target cell.
  • the sixth information may include the public configuration information of the target cell.
  • the sixth information may include the incremental configuration information of the public configuration information of the target cell relative to the first public configuration information.
  • the sixth information may be carried by RRC reconfiguration information.
  • Step 806 is optional.
  • the target network device may send the sixth information to the terminal device according to the third indication information, or may not send a message carrying the public configuration information of the target cell, that is, may not send a message carrying the sixth information. It should be understood that the target network device may decide to send the public configuration information of the target cell according to the third indication information, or may decide not to send the public configuration information of the target cell. In one possible implementation, the target network device determines whether to resend the public configuration information of the target cell to the terminal device according to the first public configuration information in one or more system messages and the public configuration information of the target cell configured by the target cell for the terminal device in the handover request confirmation message.
  • the target network device determines that the first public configuration information is the same as the public configuration information in the handover request confirmation message, the target network does not send the sixth information to the terminal device; when the target network device confirms that the first public configuration information can replace the public configuration information in the handover request confirmation message, the target network does not send the sixth information to the terminal device.
  • the terminal device sends fourth indication information to the target network device.
  • the fourth indication information is used to indicate the public configuration information of the second cell received by the terminal device.
  • the second cell is included in the at least one cell, and the second cell belongs to the neighboring cell of the target cell. That is, the fourth indication information is used to indicate the public configuration information of the cell that the terminal device already has and is adjacent to the target cell.
  • the fourth indication information includes one or more of the following: the identifier of the public configuration information of the second cell, the index of the public configuration information of the second cell, the identifier of the second cell, or the index of the second cell.
  • the source cell of the terminal device broadcasts the public configuration information of its neighboring cells 2, 3, 4, and 5, and the terminal device switches from the source cell to neighboring cell 2 (i.e., the target cell); if the neighboring cells of neighboring cell 2 include neighboring cells 3, 4, and 5, the terminal device sends the fourth indication information to the target network, and the fourth indication information is used to indicate that the terminal device receives the public configuration information of neighboring cells 3, 4, and 5.
  • Step 807 is optional.
  • the terminal device sends the fourth indication information to the target network device so that the target network device can learn the public configuration information of the cell received by the terminal device. In this way, when the target network device sends a switching command to the terminal device, it can decide whether to carry the configuration information of the cell or the exclusive configuration information of the terminal device in the new target cell in the switching command according to the fourth indication information.
  • the terminal device deletes the public configuration information of the third cell in the at least one cell.
  • Step 808 is optional.
  • the purpose of step 808 is to delete the public configuration information of the cell that is not adjacent to the target cell. Since the third cell is not a neighboring cell of the target cell, it is impossible for the terminal device to directly switch from the target cell to the third cell, that is, the terminal device will basically not use the public configuration information of the third cell.
  • the terminal device deletes the public configuration information of the third cell.
  • the configuration information can save storage overhead.
  • the terminal device when the public configuration information received by the terminal device does not include the public configuration information of the target cell (i.e., the public configuration information of the target cell is not received), the terminal device uses the public configuration information in the system message of the target cell and the terminal device's proprietary configuration information in the target cell to access the target cell; the success rate of cell switching can be improved.
  • Figure 9 is an interactive flow chart of another communication method provided in an embodiment of the present application.
  • the method flow in Figure 9 is a possible implementation of the method described in Figure 7.
  • the method flow in Figure 9 can be an independent method flow, or it can be combined with the method flow in Figure 5.
  • the terminal device and the source network device execute the method flow in Figure 9.
  • the terminal device uses the public configuration information in the system message of the target cell and the terminal device's proprietary configuration information in the target cell to access the target cell; the success rate of cell switching can be improved.
  • the method includes:
  • the source network device sends a switching command to the terminal device.
  • the terminal device receives a handover command from the source network device.
  • the handover command may include the fifth information.
  • the handover command is used for the terminal device to switch to the target cell.
  • the handover command includes the exclusive configuration information of the terminal device in the target cell, and does not include the public configuration information of the target cell.
  • the exclusive configuration information of the terminal device in the target cell needs to include at least the PCI and frequency of the target cell.
  • the terminal device performs downlink synchronization with the target cell according to the PCI and frequency of the target cell in the switching command, and reads the MIB of the target cell.
  • the UE reads the first public configuration information included in the SIB according to the MIB.
  • the terminal device searches for the primary synchronization signal (PSS)/secondary synchronization signal (SSS) of the target cell according to the information of the target cell in the handover command, decodes the physical broadcast channel (PBCH) to obtain the master information block (MIB), decodes SIB1 and other SI. From the system message, the first public configuration information is obtained. For example, the first public configuration information obtained through MIB or SIB1 or SIB19. In the terrestrial network, MIB and SIB1 are sufficient. In the NTN network, SIB19 may be additionally required.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • the terminal device accesses the target cell using the first public configuration information and the dedicated configuration information of the terminal device in the target cell.
  • the terminal device sends third indication information to the target network device.
  • the target network device receives the third indication information from the terminal device.
  • Step 905 may refer to step 805 .
  • the target network device sends sixth information to the terminal device according to the third indication information.
  • the terminal device receives the sixth information from the target network device.
  • Step 906 may refer to step 806.
  • the terminal device when the public configuration information received by the terminal device does not include the public configuration information of the target cell (i.e., the public configuration information of the target cell is not received), the terminal device uses the public configuration information in the system message of the target cell and the terminal device's proprietary configuration information in the target cell to access the target cell; the success rate of cell switching can be improved.
  • FIG10 is a schematic diagram of the structure of a communication device 1000 provided in an embodiment of the present application.
  • the communication device 1000 may correspond to the functions or steps implemented by the transmitting end in the above-mentioned various method embodiments, and may also correspond to the functions or steps implemented by the receiving end in the above-mentioned various method embodiments.
  • the communication device may include a processing module 1010 and a transceiver module 1020.
  • a storage unit may also be included, which may be used to store instructions (codes or programs) and/or data.
  • the processing module 1010 and the transceiver module 1020 may be coupled to the storage unit, for example, the processing module 1010 may read the instructions (codes or programs) and/or data in the storage unit to implement the corresponding method.
  • the transceiver module 1020 may include a sending module and a receiving module.
  • the sending module may be a transmitter
  • the receiving module may be a receiver.
  • the entity corresponding to the transceiver module 1020 may be a transceiver or a communication interface.
  • the communication device 1000 can correspond to the behavior and function of the terminal device in the above method embodiment.
  • the communication device 1000 can be a terminal device, or a component (such as a chip or circuit) applied to the terminal device.
  • the transceiver module 1020 can be used to perform all receiving or sending operations performed by the terminal device in the embodiments of Figures 5 to 9, such as steps 501 and 502 in the embodiment shown in Figure 5, steps 601, 602, 603, and 605 in the embodiment shown in Figure 6, and steps 701, 702, 703, and 704 in the embodiment shown in Figure 7, and/or other processes for supporting the technology described herein.
  • the processing module 1010 is used to perform all operations except the transceiver operation performed by the terminal device in the embodiments of Figures 5 to 9, such as step 606 in the embodiment shown in Figure 6.
  • the communication device 1000 can correspondingly implement the behaviors and functions of the source network device in the above method embodiments.
  • the communication device 1000 can be a source network device, or a component (such as a chip or circuit) used in the source network device.
  • the transceiver module 1020 can be used to perform all receiving or sending operations performed by the source network device in the embodiments of Figures 5 to 9, such as steps 501 and 502 in the embodiment shown in Figure 5, steps 601, 602, 603, and 605 in the embodiment shown in Figure 6, and steps 701, 702, 703, 704, 706, 707, 709, and 710 in the embodiment shown in Figure 7, and/or other processes for supporting the technology described herein.
  • the processing module 1010 is used to perform all operations except the transceiver operation performed by the source network device, such as step 604 in the embodiment shown in Figure 6, and step 801 in the embodiment shown in Figure 8.
  • the communication device 1000 can implement the behaviors and functions of the target network device in the above method embodiments.
  • the communication device 1000 can be a target network device, or a component (such as a chip or circuit) applied to the target network device.
  • the transceiver module 1020 can be used to perform all receiving or sending operations performed by the target network device in the embodiments of Figures 6 to 9.
  • the processing module 1010 is used to perform all operations performed by the target network device except the transceiver operation.
  • Fig. 11 is a schematic diagram of the structure of another communication device 110 provided in an embodiment of the present application.
  • the communication device in Fig. 11 can be the above-mentioned terminal device, or the above-mentioned source network device, or the above-mentioned target network device.
  • the communication device 110 includes at least one processor 1110 and a transceiver 1120 .
  • the processor 1110 and the transceiver 1120 may be used to execute functions or operations performed by the terminal device.
  • the transceiver 1120 for example, executes all receiving or sending operations performed by the terminal device in the embodiments of Figures 5 to 9.
  • the processor 1110 for example, is used to execute all operations except the receiving and sending operations performed by the terminal device in the embodiments of Figures 5 to 9.
  • the processor 1110 and the transceiver 1120 may be used to execute functions or operations performed by the source network device.
  • the transceiver 1120 for example, executes all receiving or sending operations performed by the source network device in the embodiments of Figures 5 to 9.
  • the processor 1110 is used to execute all operations performed by the source network device except the receiving and sending operations.
  • the processor 1110 and the transceiver 1120 may be used to execute functions or operations performed by the target network device.
  • the transceiver 1120 for example, executes all receiving or sending operations performed by the target network device in the embodiments of Figures 6 to 9.
  • the processor 1110 is used to execute all operations performed by the target network device except the receiving and sending operations.
  • the transceiver 1120 is used to communicate with other devices/apparatuses via a transmission medium.
  • the processor 1110 uses the transceiver 1120 to send and receive data and/or signaling, and is used to implement the method in the above method embodiment.
  • the processor 1110 can implement the function of the processing module 1010, and the transceiver 1120 can implement the function of the transceiver module 1020.
  • the transceiver 1120 may include a radio frequency circuit and an antenna.
  • the radio frequency circuit is mainly used for converting baseband signals into radio frequency signals and processing radio frequency signals.
  • the antenna is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as a touch screen, a display screen, a keyboard, etc., are mainly used for receiving data input by a user and outputting data to the user.
  • the communication device 110 may also include at least one memory 1130 for storing program instructions and/or data.
  • the memory 1130 is coupled to the processor 1110.
  • the coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 1110 may operate in conjunction with the memory 1130.
  • the processor 1110 may execute program instructions stored in the memory 1130. At least one of the at least one memory may be included in the processor.
  • the processor 1110 can read the software program in the memory 1130, interpret and execute the instructions of the software program, and process the data of the software program.
  • the processor 1110 performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit.
  • the RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 1110.
  • the processor 1110 converts the baseband signal into data and processes the data.
  • the above-mentioned RF circuit and antenna can be arranged independently of the processor performing baseband processing.
  • the RF circuit and antenna can be arranged independently of the communication device in a remote manner.
  • connection medium between the above-mentioned transceiver 1120, processor 1110 and memory 1130 is not limited in the embodiment of the present application.
  • the embodiment of the present application is connected by bus 1140 between memory 1130, processor 1110 and transceiver 1120.
  • the bus is represented by a bold line in FIG. 11.
  • the connection mode between other components is only for schematic illustration and is not limited thereto.
  • the bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in FIG. 11, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.
  • a general-purpose processor may be a microprocessor or any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. Execution completed.
  • FIG12 is a schematic diagram of the structure of another communication device 120 provided in an embodiment of the present application.
  • the communication device shown in FIG12 includes a logic circuit 1201 and an interface 1202.
  • the processing module 1010 in FIG10 can be implemented with a logic circuit 1201, and the transceiver module 1020 in FIG10 can be implemented with an interface 1202.
  • the logic circuit 1201 can be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc.
  • the interface 1202 can be a communication interface, an input and output interface, etc.
  • the logic circuit and the interface can also be coupled to each other.
  • the embodiment of the present application does not limit the specific connection method of the logic circuit and the interface.
  • the logic circuit and interface may be used to execute the functions or operations performed by the above-mentioned terminal device, etc.
  • the logic circuit and interface may be used to execute the functions or operations performed by the above-mentioned source network device.
  • the present application also provides a computer-readable storage medium, in which a computer program or instruction is stored.
  • a computer program or instruction is stored.
  • the computer program or instruction is executed on a computer, the computer executes the method of the above embodiment.
  • Computer-readable storage media include read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electronically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.
  • ROM read-only memory
  • RAM random access memory
  • PROM programmable read-only memory
  • EPROM erasable programmable read-only memory
  • OTPROM one-time programmable read-only memory
  • EEPROM electronically erasable programmable read-only memory
  • CD-ROM compact disc read-only memory
  • CD-ROM compact disc read-only memory
  • the present application also provides a computer program product, which includes instructions or a computer program.
  • a computer program product which includes instructions or a computer program.
  • the present application also provides a communication system, including the above terminal device and the above source network device.
  • the communication system may also include the above target network device.
  • the present application also provides a chip, which includes: a communication interface and a processor; the communication interface is used for sending and receiving signals of the above-mentioned chip; the processor is used for executing computer program instructions so that a communication device including the above-mentioned chip executes the method in the above-mentioned embodiment.
  • the above embodiments it can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the above computer program product includes one or more computer programs or instructions.
  • the above computer program or instruction is loaded and executed on a computer, the above process or function of the embodiment of the present application is executed in whole or in part.
  • the above computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device or other programmable device.
  • the above computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the above computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media.
  • the above available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a tape; it may also be an optical medium, such as a digital video disc; it may also be a semiconductor medium, such as a solid-state hard disk.
  • the computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请公开了一种通信方法和通信装置，本申请可以应用于无线通信系统，例如卫星通信系统。该方法包括：接收第一信息，该第一信息包括至少一个小区的公共配置信息，该第一信息通过组播消息或广播消息携带；终端设备发送第二信息，该第二信息用于指示终端设备接收到的该至少一个小区的部分或全部公共配置信息。网络设备根据第二信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，能够减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。

Description

通信方法和通信装置
本申请要求在2022年11月03日提交中国国家知识产权局、申请号为202211380339.X的中国专利申请的优先权，发明名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及通信方法和通信装置。
背景技术
卫星通信，即非地面通信(non-terrestrial networks，NTN)，具有覆盖范围广、通信距离远、可靠性高、灵活性大、吞吐高等优点。将卫星引入到第五代移动网络(5th-Generation，5G)中，可以为地面网络难以覆盖的区域，如海洋、森林等提供通信服务，还可以增强5G通信的可靠性，如为火车、飞机以及这些交通工具上的用户提供更稳定更优质的通信服务，还可以提供更多的数据传输资源，以及支持更多数量的连接。
通常来说，卫星的轨道越高其覆盖面积越大，但是通信的时延也越长。在NTN中，由于NTN小区的覆盖面积大，一个小区可接入的用户数量是巨大的。卫星的高速移动，会导致大量用户设备(user equipment，UE)同时进行小区切换而引发信令风暴。为减少信令开销，可以通过组播或广播的方式向UE发送目标小区的公共配置信息。由于公共配置信息可以通过一份物理资源发送给多个UE，可以认为是节约信令开销的一种办法。目前，通过组播或广播的方式向UE发送目标小区的公共配置信息来实现小区切换的方案存在切换成功率较低的问题。因此需要研究如何提高小区切换的成功率的方案。
发明内容
本申请实施例公开了一种通信方法和通信装置，能够提高小区切换的成功率。
第一方面，本申请实施例提供一种通信方法，该方法包括：终端设备接收第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息通过组播消息或广播消息携带；所述终端设备发送第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
本申请实施例中，终端设备发送第二信息，该第二信息用于指示该终端设备接收到的至少一个小区的部分或全部公共配置信息，以便网络设备根据第二信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，能够减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
在一种可能的实现方式中，所述方法应用于卫星通信场景。
卫星通信场景中，由于卫星的高速移动，会导致UE同时进行小区切换而引发信令风暴。终端设备接收通过组播消息或广播消息携带的第一信息可节约信令开销，即避免信令风暴。终端设备发送第二信息，以便网络设备根据第二信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，能够减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
在一种可能的实现方式中，所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括第一小区的公共配置信息，所述第二信息包括以下一项或多项：所述第一小区的公共配置信息的标识、所述第一小区的公共配置信息的索引、所述第一小区的标识、或者所述第一小区的索引。所述第一小区可以是所述终端设备当前接入小区的邻区。
在该实现方式中，第二信息可以准确地指示接收到的公共配置信息，信令开销少。
在一种可能的实现方式中，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息。
在该实现方式中，第一指示信息用于指示终端设备在接收到小区的公共配置信息后发送第二信息，以便终端设备反馈接收到的公共配置信息。
在一种可能的实现方式中，所述方法还包括：所述终端设备接收第三信息，所述第三信息包括第一指 示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监听物理下行控制信道(physical downlink control channel，PDCCH)。本申请实施例中，组标识可以是组无线网络临时标识(group-radio network temporary identifier，G-RNTI)。
在该实现方式中，第一指示信息用于指示终端设备在接收到小区的公共配置信息后发送第二信息，以便终端设备反馈接收到的公共配置信息。
在一种可能的实现方式中，所述第一指示信息还用于指示所述终端设备反馈接收到的公共配置信息的格式，即所述第二信息的格式。所述第一指示信息还用于指示所述终端设备反馈接收到的公共配置信息的格式可理解为：所述第一指示信息还用于指示所述终端设备通过哪些内容指示接收到的公共配置信息。例如，第一指示信息用于指示终端设备只反馈收到了小区的公共配置信息，但是不反馈具体收到的小区的信息；也可能指示终端设备需要反馈具体收到了哪些小区的公共配置信息等等。
在该实现方式中，第一指示信息还用于指示终端设备反馈接收到的公共配置信息的格式，以便该终端设备按照特定的格式反馈接收到的公共配置信息。这样可以使得网络设备准确地获知终端设备接收到的公共配置信息。
在一种可能的实现方式中，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息所属的小区，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区。
在该实现方式中，可以使得网络设备准确地获知终端设备接收到的公共配置信息，信令开销少。
在一种可能的实现方式中，所述方法还包括：所述终端设备接收第四信息，所述第四信息用于指示所述终端设备切换至目标小区；所述第四信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息包括所述目标小区的公共配置信息。所述第四信息可不包括所述目标小区的公共配置信息。可选的，所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息包括所述目标小区的公共配置信息。
在该实现方式中，终端设备接收第四信息，终端设备接收到的公共配置信息包括目标小区的公共配置信息。第四信息不必包括目标小区的公共配置信息，可以节约信令开销。
在一种可能的实现方式中，所述第四信息包括第二指示信息，所述第二指示信息用于指示所述第四信息未携带所述目标小区的公共配置信息，或者，所述第二指示信息用于指示所述终端设备基于所述目标小区的系统消息中的公共配置信息接入所述目标小区。
在该实现方式中，第四信息包括第二指示信息，该第二指示信息指示第四信息未携带所述目标小区的公共配置信息或终端设备基于目标小区的系统消息中的公共配置信息接入目标小区，可以避免终端设备将第四信息中的终端设备在目标小区的专有的配置信息解析为小区的配置信息。
在一种可能的实现方式中，所述方法还包括：所述终端设备接收第五信息，所述第五信息用于所述终端设备切换至目标小区，所述第五信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息未包括所述目标小区的公共配置信息；所述终端设备根据所述第五信息，获取所述目标小区的系统信息块(system information block，SIB)中的第一公共配置信息；所述终端设备利用所述第一公共配置信息和所述终端设备在所述目标小区的专有的配置信息接入所述目标小区。
在该实现方式中，终端设备在接收到的公共配置信息未包括目标小区的公共配置信息(即未接收到目标小区的公共配置信息)的情况下，终端设备利用第一公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区；可以提高小区切换的成功率。
在一种可能的实现方式中，所述终端设备根据所述第五信息，获取所述目标小区的SIB中的第一公共配置信息包括：所述终端设备根据所述第五信息中的所述目标小区的物理小区标识(physical cell identifier，PCI)和频点与所述目标小区进行下行同步；所述终端设备通过所述目标小区对应的G-RNTI，读取所述目标小区的SIB中的所述第一公共配置信息。G-RNTI可以是终端设备与网络设备约定好的，也可以是在第五信息中下发给终端设备的。
在该实现方式中，终端设备通过目标小区对应的G-RNTI，读取目标小区的SIB中的第一公共配置信息；可以避免未处于该目标小区对应的分组中的其他终端设备接入目标小区。
在一种可能的实现方式中，所述方法还包括：所述终端设备发送第三指示信息，所述第三指示信息用于指示所述终端设备在向所述目标小区切换前，未接收到所述目标小区的公共配置信息。
在该实现方式中，终端设备发送第三指示信息，可以网络设备获知终端设备未接收到目标小区的公共配置信息。
在一种可能的实现方式中，所述第三指示信息通过随机接入过程中的第三条消息(即Msg3)携带。
在该实现方式中，第三指示信息通过随机接入过程中的第三条消息携带，可节约信令开销。
在一种可能的实现方式中，所述方法还包括：所述终端设备接收第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
在该实现方式中，终端设备接收第六信息，以便根据该第六信息获取目标小区的公共配置信息。
在一种可能的实现方式中，所述第六信息包括所述目标小区的公共配置信息或者所述目标小区的公共配置信息相对于所述终端设备的源小区的公共配置信息的增量配置信息。
在该实现方式中，终端设备根据第六信息可获取目标小区的公共配置信息。
在一种可能的实现方式中，所述方法还包括：所述终端设备切换至所述目标小区；向为所述目标小区提供服务的目标网络设备发送第四指示信息，所述第四指示信息用于指示所述终端设备接收到的第二小区的公共配置信息，所述第二小区包含于所述至少一个小区，所述第二小区属于所述目标小区的邻区。例如，终端设备的源小区广播其邻区2、邻区3、邻区4、邻区5的公共配置信息，该终端设备从源小区切换到邻区2(即目标小区)；若邻区2的邻区包括邻区3、邻区4、邻区5，该终端设备向目标网络网络发送第四指示信息，该第四指示信息用于指示终端设备接收到邻区3、邻区4、邻区5的公共配置信息。
在该实现方式中，终端设备向为目标小区提供服务的目标网络设备发送第四指示信息，以便目标网络设备获知终端设备接收到的小区的公共配置信息。这样目标网络设备在向终端设备发送切换命令时，可以根据第四指示信息决定在该切换命令中是携带小区的配置信息，还是携带终端设备在新的目标小区的专有的配置信息。
在一种可能的实现方式中，所述第四指示信息包括以下一项或多项：所述第二小区的公共配置信息的标识、所述第二小区的公共配置信息的索引、所述第二小区的标识、或者所述第二小区的索引。
在一种可能的实现方式中，在所述终端设备切换至所述目标小区之后，所述方法还包括：所述终端设备删除所述至少一个小区中的第三小区的公共配置信息，所述第三小区不属于所述目标小区的邻区。
由于第三小区不属于目标小区的邻区，因此终端设备不可能直接从目标小区切换至该第三小区，即终端设备基本不会用到第三小区的公共配置信息。终端设备删除第三小区的公共配置信息可以节省存储开销。
第二方面，本申请实施例提供另一种通信方法，该方法包括：源网络设备发送第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息通过组播消息或广播消息携带；所述源网络设备接收第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
本申请实施例中，源网络设备接收第二信息，该第二信息用于指示该终端设备接收到的至少一个小区的部分或全部公共配置信息。网络设备根据第二信息可决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，能够减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
在一种可能的实现方式中，所述方法应用于卫星通信场景。
第二方面提供的方法应用于卫星通信场景，可避免UE同时进行小区切换而引发信令风暴，并提供小区切换的成功率。
在一种可能的实现方式中，所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括第一小区的公共配置信息，所述第二信息包括以下一项或多项：所述第一小区的公共配置信息的标识、所述第一小区的公共配置信息的索引、所述第一小区的标识、或者所述第一小区的索引。所述第一小区可以是所述终端设备当前接入小区的邻区。
在该实现方式中，第二信息可以准确地指示接收到的公共配置信息，信令开销少。
在一种可能的实现方式中，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息。
在该实现方式中，第一指示信息用于指示终端设备在接收到小区的公共配置信息后发送第二信息，以便终端设备反馈接收到的公共配置信息。
在一种可能的实现方式中，所述方法还包括：所述源网络设备发送第三信息，所述第三信息包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监 听PDCCH。本申请实施例中，组标识可以是G-RNTI。
在该实现方式中，第一指示信息用于指示终端设备在接收到小区的公共配置信息后发送第二信息，以便终端设备反馈接收到的公共配置信息。
在一种可能的实现方式中，所述第一指示信息还用于指示所述终端设备反馈接收到的公共配置信息的格式。
在该实现方式中，第一指示信息还用于指示终端设备反馈接收到的公共配置信息的格式，以便该终端设备按照特定的格式反馈接收到的公共配置信息。这样可以使得网络设备准确地获知终端设备接收到的公共配置信息。
在一种可能的实现方式中，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息所属的小区，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区。
在该实现方式中，可以使得网络设备准确地获知终端设备接收到的公共配置信息，信令开销少。
在一种可能的实现方式中，所述方法还包括：所述源网络设备确定将所述终端设备切换至目标小区；在所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括所述目标小区的公共配置信息的情况下，所述源网络设备向所述终端设备发送第四信息，所述第四信息用于所述终端设备切换至所述目标小区，所述第四信息包括所述终端设备专有的配置信息。所述第四信息可不包括所述目标小区的公共配置信息。
在该实现方式中，源网络设备向终端设备发送第四信息，该第四信息不必包括目标小区的公共配置信息，可以节约信令开销。
在一种可能的实现方式中，所述方法还包括：所述源网络设备确定将所述终端设备切换至目标小区；在所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息未包括所述目标小区的公共配置信息的情况下，所述源网络设备向所述终端设备发送第七信息，所述第七信息用于所述终端设备切换至所述目标小区，所述第七信息包括所述终端设备在所述目标小区的专有的配置信息和所述目标小区的公共配置信息。或者说，第七信息包括所述目标小区的小区的配置信息。
在该实现方式中，可以保证使得终端设备获得终端设备在目标小区的专有的配置信息和目标小区的公共配置信息。
在一种可能的实现方式中，所述第四信息包括第二指示信息，所述第二指示信息用于指示所述第四信息未携带所述目标小区的公共配置信息，或者，所述第二指示信息用于指示所述终端设备基于所述目标小区的系统消息中的公共配置信息接入所述目标小区。
在该实现方式中，第四信息包括第二指示信息，该第二指示信息指示第四信息未携带所述目标小区的公共配置信息或终端设备基于目标小区的系统消息中的公共配置信息接入目标小区，可以避免终端设备将第四信息中的终端设备在目标小区的专有的配置信息解析为小区的配置信息。
在一种可能的实现方式中，所述方法还包括：所述源网络设备发送第五信息，所述第五信息用于所述终端设备切换至目标小区，所述第五信息包括所述终端设备在所述目标小区的专有的配置信息，且未包括所述目标小区的公共配置信息。
在该实现方式中，第五信息未包括目标小区的公共配置信息，可节约信令开销。
第三方面，本申请实施例提供另一种通信方法，该方法包括：目标网络设备接收第三指示信息，所述第三指示信息用于指示终端设备在向目标小区切换前，未接收到所述目标小区的公共配置信息，所述目标小区由所述目标网络设备提供服务；所述目标网络设备发送第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
本申请实施例中，目标网络设备发送第六信息，以便终端设备获取目标小区的公共配置信息。
在一种可能的实现方式中，所述第六信息包括所述目标小区的公共配置信息或者所述目标小区的公共配置信息相对于所述终端设备的源小区的公共配置信息的增量配置信息。
在一种可能的实现方式中，所述第三指示信息通过随机接入过程中的第三条消息携带。
在该实现方式中，第三指示信息通过随机接入过程中的第三条消息携带，可以节约信令开销。
在一种可能的实现方式中，所述方法还包括：所述目标网络设备接收来自所述终端设备的第四指示信息，所述第四指示信息用于指示所述终端设备接收到的第二小区的公共配置信息，所述第二小区属于所述目标小区的邻区。例如，终端设备的源小区广播其邻区2、邻区3、邻区4、邻区5的公共配置信息，该终端设备从源小区切换到邻区2(即目标小区)；若邻区2的邻区包括邻区3、邻区4、邻区5，该终端设备 向目标网络网络发送第四指示信息，该第四指示信息用于指示终端设备接收到邻区3、邻区4、邻区5的公共配置信息。
在该实现方式中，目标网络设备接收来自所述终端设备的第四指示信息，可以获知终端设备接收到的小区的公共配置信息。这样目标网络设备在向终端设备发送切换命令时，可以根据第四指示信息决定在该切换命令中是携带小区的配置信息，还是携带终端设备在新的目标小区的专有的配置信息。
在一种可能的实现方式中，所述第四指示信息包括以下一项或多项：所述第二小区的公共配置信息的标识、所述第二小区的公共配置信息的索引、所述第二小区的标识、或者所述第二小区的索引。
第四方面，本申请实施例提供一种终端设备，该终端设备具有实现上述第一方面方法实施例中的行为的功能。该终端设备可以是一个完整的终端设备，也可以是终端设备的部件(例如处理器、芯片、或芯片系统等)，还可以是能实现全部或部分该终端设备的功能的逻辑模块或软件。该终端设备的功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，该硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，该终端设备包括收发模块和处理模块，其中：所述收发模块，用于接收第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息通过组播消息或广播消息携带；所述处理模块，用于生成第二信息；所述收发模块，还用于发送所述第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于接收第三信息，所述第三信息包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监听PDCCH。
在一种可能的实现方式中，所述收发模块，还用于接收第四信息，所述第四信息用于指示所述终端设备切换至目标小区；所述第四信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息包括所述目标小区的公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于接收第五信息，所述第五信息用于所述终端设备切换至目标小区，所述第五信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息未包括所述目标小区的公共配置信息；所述处理模块，还用于根据所述第五信息，获取所述目标小区的SIB中的第一公共配置信息；所述终端设备利用所述第一公共配置信息和所述终端设备在所述目标小区的专有的配置信息接入所述目标小区。
在一种可能的实现方式中，所述处理模块，具体用于根据所述第五信息中的所述目标小区的PCI和频点与所述目标小区进行下行同步；通过所述目标小区对应的G-RNTI，读取所述目标小区的SIB中的所述第一公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于发送第三指示信息，所述第三指示信息用于指示所述终端设备在向所述目标小区切换前，未接收到所述目标小区的公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于接收第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
在一种可能的实现方式中，所述处理模块，还用于将所述终端设备切换至所述目标小区；所述收发模块，还用于向为所述目标小区提供服务的目标网络设备发送第四指示信息，所述第四指示信息用于指示所述终端设备接收到的第二小区的公共配置信息，所述第二小区包含于所述至少一个小区，所述第二小区属于所述目标小区的邻区。
在一种可能的实现方式中，所述处理模块，还用于删除所述至少一个小区中的第三小区的公共配置信息，所述第三小区不属于所述目标小区的邻区。
第四方面的终端设备可能的实现方式可参见第一方面的各种可能的实现方式。
关于第四方面的各种可能的实现方式所带来的技术效果，可参考对于第一方面或第一方面的各种可能的实现方式的技术效果的介绍。
第五方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第二方面方法实施例中的行为的功能。该通信装置可以是网络设备，也可以是网络设备的部件(例如处理器、芯片、或芯片系统等)，还可以是能实现全部或部分该网络设备的功能的逻辑模块或软件。该通信装置的功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，该硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，该通信装置包括收发模块和处理模块，其中：所述处理模块，用于生成第一信息；所述收发模块，用于发送所述第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息 通过组播消息或广播消息携带；所述收发模块，还用于接收第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于发送第三信息，所述第三信息包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监听PDCCH。
在一种可能的实现方式中，所述处理模块，还用于确定将所述终端设备切换至目标小区；在所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括所述目标小区的公共配置信息的情况下，通过所述收发模块向所述终端设备发送第四信息，所述第四信息用于所述终端设备切换至所述目标小区，所述第四信息包括所述终端设备专有的配置信息。所述第四信息可不包括所述目标小区的公共配置信息。
在一种可能的实现方式中，所述处理模块，还用于确定将所述终端设备切换至目标小区；在所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息未包括所述目标小区的公共配置信息的情况下，通过所述收发模块向所述终端设备发送第七信息，所述第七信息用于所述终端设备切换至所述目标小区，所述第七信息包括所述终端设备在所述目标小区的专有的配置信息和所述目标小区的公共配置信息。
在一种可能的实现方式中，所述处理模块，还用于发送第五信息，所述第五信息用于所述终端设备切换至目标小区，所述第五信息包括所述终端设备在所述目标小区的专有的配置信息，且未包括所述目标小区的公共配置信息。
第五方面的通信装置可能的实现方式可参见第二方面的各种可能的实现方式。
关于第五方面的各种可能的实现方式所带来的技术效果，可参考对于第二方面或第二方面的各种可能的实现方式的技术效果的介绍。
第六方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第三方面方法实施例中的行为的功能。该通信装置可以是网络设备，也可以是网络设备的部件(例如处理器、芯片、或芯片系统等)，还可以是能实现全部或部分该网络设备的功能的逻辑模块或软件。该通信装置的功能可以通过硬件实现，也可以通过硬件执行相应的软件实现，该硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，该通信装置包括收发模块和处理模块，其中：所述收发模块，用于接收第三指示信息，所述第三指示信息用于指示终端设备在向目标小区切换前，未接收到所述目标小区的公共配置信息，所述目标小区由所述目标网络设备提供服务；所述处理模块，用于生成第六信息；所述收发模块，还用于发送所述第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
在一种可能的实现方式中，所述收发模块，还用于接收来自所述终端设备的第四指示信息，所述第四指示信息用于指示所述终端设备接收到的第二小区的公共配置信息，所述第二小区属于所述目标小区的邻区。
第六方面的通信装置可能的实现方式可参见第三方面的各种可能的实现方式。
关于第六方面的各种可能的实现方式所带来的技术效果，可参考对于第三方面或第三方面的各种可能的实现方式的技术效果的介绍。
第七方面，本申请实施例提供另一种通信装置，该通信装置包括处理器，该处理器与存储器耦合，该存储器用于存储程序或指令，当该程序或指令被该处理器执行时，使得该通信装置执行上述第一方面至上述第三方面中的任一方面所示的方法。
本申请实施例中，在执行上述方法的过程中，上述方法中有关发送信息(或信号)的过程，可以理解为基于处理器的指令进行输出信息的过程。在输出信息时，处理器将信息输出给收发器，以便由收发器进行发射。该信息在由处理器输出之后，还可能需要进行其他的处理，然后到达收发器。类似的，处理器接收输入的信息时，收发器接收该信息，并将其输入处理器。更进一步的，在收发器收到该信息之后，该信息可能需要进行其他的处理，然后才输入处理器。
对于处理器所涉及的发送和/或接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以一般性的理解为基于处理器的指令输出。
在实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器等。例如，处理器还可以用于执行存储器中存储的程序，当该程序被执行时，使得该通信装置执行如上述第一方面或第一方面的任意可能的实现方式所示的方法。
在一种可能的实现方式中，存储器位于上述通信装置之外。在一种可能的实现方式中，存储器位于上述通信装置之内。
在一种可能的实现方式中，处理器和存储器还可能集成于一个器件中，即处理器和存储器还可能被集成于一起。
在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收信号或发送信号等。
第八方面，本申请提供另一种通信装置，该通信装置包括处理电路和接口电路，该接口电路用于获取数据或输出数据；处理电路用于执行如上述第一方面至上述第三方面中的任一方面所示的方法。
第九方面，本申请提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序，该计算机程序包括程序指令，该程序指令被执行时使得计算机执行如上述第一方面至上述第三方面中的任一方面所示的方法。
第十方面，本申请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，该计算机程序包括程序指令，该程序指令被执行时使得计算机执行如上述第一方面至上述第三方面中的任一方面所示的方法。
第十一方面，本申请提供一种通信系统，包括上述第四方面或第四方面的任意可能的实现方式所述的终端设备、上述第五方面或第五方面的任意可能的实现方式所述的通信装置。该通信系统还可包括上述第六方面或第六方面的任意可能的实现方式所述的通信装置。
第十二方面，本申请提供一种芯片，包括处理器与通信接口，所述处理器通过所述通信接口读取存储器上存储的指令，执行如上述第一方面至上述第三方面中的任一方面所示的方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1示出了一种地面静止小区的映射方式的示意图；
图2示出了一种地面移动小区的映射方式的示意图；
图3为本申请实施例提供的一种无线通信系统的架构示意图；
图4示出了一种CU-DU分离架构的示意图；
图5为本申请实施例提供的一种通信方法交互流程图；
图6为本申请实施例提供的另一种通信方法交互流程图；
图7为本申请实施例提供的另一种通信方法交互流程图；
图8为本申请实施例提供的另一种通信方法交互流程图；
图9为本申请实施例提供的另一种通信方法交互流程图；
图10为本申请实施例提供的一种通信装置1000的结构示意图；
图11为本申请实施例提供的另一种通信装置110的结构示意图；
图12为本申请实施例提供的另一种通信装置120的结构示意图。
具体实施方式
本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等仅用于区别不同对象，而不是用于描述特定顺序。可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程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。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备等，没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元等，或可选地还包括对于这些过程、方法、产品或设备等固有的其它步骤或单元。
在本文中提及的“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员可以显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、 “该”和“这一”旨在也包括复数表达形式，除非其上下文中明确地有相反指示。还应当理解，本申请中使用的术语“和/或”是指并包含一个或多个所列出项目的任何或所有可能组合。例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。本申请中使用的术语“多个”是指两个或两个以上。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系。本申请中使用的术语“至少一个”是指一个或多个。
可以理解，在本申请各实施例中，“A对应的B”表示A与B存在对应关系，根据A可以确定B。但还应理解，根据(或基于)A确定(或生成)B并不意味着仅仅根据(或基于)A确定(或生成)B，还可以根据(或基于)A和/或其它信息确定(或生成)B。
为了便于理解本申请的方案，下面首先介绍本申请实施例中所涉及的术语和技术方案。
低轨卫星和中轨卫星分为两种地面映射方式：地面静止小区(quasi-earth-fixed cell)的映射方式和地面移动小区(earth-moving cell)的映射方式。
通常来说，卫星的轨道越高其覆盖面积越大，但是通信的时延也越长。一般说来，卫星的运行轨道根据高度可以分为：低轨道，地轨道的轨道高度为160～2 000km；中轨道，中轨道的轨道高度为2 000～35 786km；静止轨道，静止轨道的轨道高度为35 786km，运行在此轨道上的卫星与地球的相对位置不受地球自转的影响。
图1和图2以卫星实现继续演进的节点B(gNB)的部分或全部功能为例，对小区映射方式进行说明，本申请并不限于图1和图2所描述的方式。地面静止小区的映射方式是指小区(cell)的位置在地面是不动的，移动的卫星通过调整自己的波束形成这些小区。图1示出了一种地面静止小区的映射方式的示意图。图1中，gNB1和gNB2可视为卫星上的基站，gNB1和gNB2从右向左移动。参阅图1，T1时刻：小区1和小区2有gNB1的波束覆盖，小区3和小区4由gNB2的波束覆盖；T2时刻：虽然gNB1和gNB2都向左移动，但是gNB1和gNB2依然可以调整自己的波束，保证小区1、小区2、小区3、小区4的覆盖；T3时刻：相比T1时刻，gNB1和gNB2已经移动了足够的距离，gNB1无法通过调整波束再为小区2提供覆盖，gNB2无法通过调整波束为小区4提供覆盖，此时，gNB2可以为小区2提供覆盖，而gNB3可以为小区4提供覆盖。
地面移动小区的映射方式是指移动的卫星并不动态调整它的波束方向，卫星生成的波束随着卫星的移动而在地面上移动。图2示出了一种地面移动小区的映射方式的示意图。图2中，gNB1和gNB2可视为卫星上的基站，gNB1和gNB2从右向左移动。参阅图2，T1时刻：这块区域由gNB1和gNB2的小区1、小区2、小区3、小区4进行覆盖，而在T3时候，这块区域由gNB1、gNB2以及gNB3的小区2、小区3、小区4、小区5进行覆盖。或者说，T1时刻：gNB1覆盖小区1和小区2，gNB2覆盖小区3和小区4；T3时刻：gNB1覆盖小区2，gNB2覆盖小区2和小区3，gNB3覆盖小区5。
在NTN中，由于NTN小区的覆盖面积大，一个小区可接入的用户数量是巨大的。在一些场景下，网络需要在短时间内将大量的终端设备从服务小区切换到目标小区，例如下文的场景1和场景2。
场景1：在准静止小区，卫星可以在一段时间内给固定的地理区域提供覆盖。考虑到NTN的覆盖面积很大，小区里可能会有很大数量的终端设备。当服务卫星停止为服务小区提供服务，由另一个目标卫星来为该区域提供服务时，服务小区内的所有终端设备都需要在短时间内切换到新的小区，这将导致大量的信令风暴。
场景2：不管是在准静止小区还是移动小区，当馈电链路切换时，例如卫星从gNB1切换到gNB2，所有在gNB1里的终端设备都要在同时被切换到gNB2，这也会导致信令风暴。
小区的公共配置信息和终端设备在小区的专有的配置信息
切换信令(用于实现终端设备的小区切换的命令)中包括目标小区的公共配置信息和终端设备在该目标小区的专有的配置信息。目标小区是指终端设备待切换至的小区。终端设备根据切换信令可从当前接入的源小区切换至目标小区。目标小区的公共配置信息是针对所有需要接入目标小区的终端设备。不同切换命令中的目标小区的公共配置信息是相同。例如，切换信令1用于终端设备1从源小区1切换至目标小区，切换信令2用于终端设备2从源小区1切换至目标小区，切换信令1中的目标小区的公共配置信息与切换信令2中的目标小区的公共配置信息相同。终端设备在目标小区的专有的配置信息是终端设备专有的配置信息。也就是说，任意两个终端设备在目标小区的专有的配置信息都不相同，是目标小区为每个终端设备单独分配的配置信息。终端设备根据目标小区的公共配置信息和终端设备在该目标小区的专有的配置信息， 才能从当前接入的源小区切换至目标小区。
如背景技术部分所述，已有的通过组播或广播的方式向UE发送目标小区的公共配置信息来实现小区切换的方案存在切换成功率较低的问题。因此需要研究如何提高小区切换的成功率的方案。本申请实施例提供了能够在节约信令开销的同时提高小区切换的成功率的通信方案。另外，本申请实施例还提供了利用未携带目标小区的公共配置信息的切换命令，切换至目标小区的通信方案。下面介绍本申请实施例提供的通信方案适用的系统架构。
图3为本申请实施例提供的一种无线通信系统的架构示意图。参阅图3，该系统架构涉及的网元主要包括：终端设备、核心网设备以及一个或多个接入网设备(仅示出2个)。在一些实施例中，无线通信系统可以由多个小区组成，每个小区内包含一个或多个接入网设备，接入网设备向多个终端设备提供通信服务。无线通信系统中，多个终端设备之间可互相通信。终端设备位于接入网设备提供的一个或多个小区(载波)的覆盖范围内，即为终端设备服务的小区可以为一个或多个。无线通信系统中的终端设备可进行小区切换，即从当前接入的小区切换至其他小区，例如切换至可为终端设备提供更好服务的小区。
终端设备，又称之为用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等，是指向用户提供语音和/或数据连通性的设备。例如，终端设备为具有无线连接功能的手持式设备、车载设备等。目前，一些终端设备的举例为：手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device，MID)、可穿戴设备，虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)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、远程手术(remote medical surgery)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、用户单元(subscriber unit)、蜂窝电话(cellular phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、膝上型电脑(laptop computer)、机器类型通信(machine type communication,MTC)终端、无人机等。终端设备可以是5G以及5G之后演进的通信系统中的任意形态的终端等，本申请对此并不限定。
接入网设备是指将终端设备接入到无线网络的无线接入网(radio access network，RAN)节点(或设备)，又可以称为基站。目前，一些RAN节点的举例为：继续演进的节点B(gNB)、传输接收点(transmission reception point，TRP)、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 NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)，或无线保真(wireless fidelity，Wifi)接入点(access point，AP)、卫星、接入回传一体化(integrated access and backhaul，IAB)等。另外，在一种网络结构中，接入网设备可以为包括集中式单元(centralized unit，CU)节点或分布式单元(distributed unit，DU)节点的RAN设备，也可以为包括CU节点和DU节点的RAN设备。其中包括CU节点和DU节点的RAN设备将新无线(new radio，NR)系统中gNB的协议层拆分开，部分协议层的功能放在CU集中控制，剩下部分或全部协议层的功能分布在DU中，由CU集中控制DU。更进一步，CU还可以划分为控制面(CU-CP)和用户面(CU-UP)。图4示出了一种CU-DU分离架构的示意图。参阅图4，每个DU通过F1逻辑接口与CU连接；无线链路控制(radio link control，RLC)层，介质接入控制(media access control，MAC)层以及物理层(physical layer，PHY)相关的操作由DU处理；服务数据适配协议(service data adaptation protocol，SDAP)层，无线资源控制(radio resource control，RRC)层和分组数据汇聚协议(packet data convergence protocol，PDCP)层相关的操作由CU处理。其中，CU-CP负责控制面(control plane)功能，主要包含RRC和控制面对应的PDCP，即PDCP-C。PDCP-C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负责用户面(user plane)功能，主要包含SDAP和用户面对应的PDCP，即PDCP-U。其中SDAP主要负责将核心网的数据进行处理并将流(flow)映射到承载。PDCP-U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。其中CU-CP和CU-UP通过E1接口连接。CU-CP代表CU通过Ng接口和核心网连接。CU-CP通过F1接口控制面(即F1-C)和DU连接。CU-UP通过F1接口用户面(即F1-U)和DU连接。当然还有一种可能的实现是PDCP-C也在CU-UP。
核心网设备是指为终端设备提供业务支持的核心网(core network，CN)中的设备。目前，一些核心网设备的举例为：接入和移动性管理功能(access and mobility management function，AMF)实体、会话管理功能(session management function，SMF)实体、用户面功能(user plane function，UPF)实体等等，此 处不一一列举。其中，上述AMF实体可以负责终端的接入管理和移动性管理；上述SMF实体可以负责会话管理，如用户的会话建立等；上述UPF实体可以是用户面的功能实体，主要负责连接外部网络。需要说明的是，本申请中实体也可以称为网元或功能实体。例如，AMF实体也可以称为AMF网元或AMF功能实体。又例如，SMF实体也可以称为SMF网元或SMF功能实体等。
本申请实施例提供的通信方案也适用于其他通信系统。例如，卫星通信系统、物联网(internet of things，IoT)网络或车联网(Vehicle to X，V2X)等无线局域网系统、通用移动通信系统(universal mobile telecommunication system，UMTS)、无线局域网(wireless local area network，WLAN)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、第五代(5th generation，5G)通信系统,以及未来的第六代(6th generation，6G)通信系统等。本申请实施例提供的通信方案也适用于其他需要在短时间内将大量的终端设备从服务小区切换到目标小区的通信系统。
上述适用本申请实施例提供的通信方案的通信系统仅是举例说明，适用本申请的通信系统不限于此，在此统一说明，以下不再赘述。
下面结合附图介绍本申请实施例提供的通信方案。
图5为本申请实施例提供的一种通信方法交互流程图。如图5所示，该方法包括：
501、源网络设备发送第一信息。
相应的，终端设备接收第一信息。源网络设备是为终端设备当前接入的小区提供服务的接入网设备，即管理终端设备当前接入的小区的接入网设备。或者说，终端设备当前接入的小区是源网络设备管理的小区。第一信息包括至少一个小区的公共配置信息。在一种可能的实现方式中，该至少一个小区与终端设备当前接入的源小区相邻。或者说，至少一个小区为与终端设备当前接入的源小区相邻的小区。例如，第一信息包括小区1的公共配置信息、小区2的公共配置信息以及小区3的公共配置信息，小区1、小区2以及小区3均与终端设备当前接入的小区相邻。上述第一信息通过组播消息或广播消息携带。源网络设备发送第一信息可以是：源网络设备发送携带第一信息的组播消息或广播消息。相应的，终端设备接收携带第一信息的组播消息或广播消息。例如，广播消息为终端设备当前接入的小区的系统消息。第一信息中的小区的公共配置(对应于公共配置信息)有两种可能的形式，一种是直接下发小区的配置，是一个绝对配置；另一种是相对于源小区的公共配置的差异配置，也可以成为增量配置，也称为delta配置，相对应的，终端设备收到差异配置后，需要基于源小区的公共配置来转换为目标小区的配置。源网络设备下发增量配置相对下发小区的配置可能会减少开销，但是前提是需要下发源小区的公共配置，即下发源小区的公共配置信息。
在一种可能的实现方式中，上述第一信息还包括第一指示信息，上述第一指示信息用于指示上述终端设备在接收到小区的公共配置信息后发送上述第二信息，即反馈接收到的公共配置信息。第一指示信息可包含在小区的公共配置信息中，也可以不包含在小区公共配置信息中。本申请实施例不限定第一指示信息的格式。第一指示信息一种可能的格式如下：第一指示信息包括一个布尔值，当该布尔值为真(true)时，终端设备反馈接收到的公共配置信息，例如发送第二信息；当该布尔值为假(false)时，终端设备不反馈接收到的公共配置信息。第一指示信息另一种可能的格式如下：第一指示信息包括一个或多个比特位，当第一信息携带该一个或多个比特位时，终端设备反馈接收到的公共配置信息；当该第一信息未携带该一个或多个比特位时，终端设备反馈接收到的公共配置信息。或者说，当第一信息携带第一指示信息时，终端设备基于第一信息反馈接收到的公共配置信息；当第一信息未携带第一指示信息时，终端设备基于第一信息不反馈接收到的公共配置信息。第一指示信息另一种可能的格式如下：第一指示信息包括一个或多个比特位，当该一个或多个比特位表示的数值为数值1时，终端设备基于第一信息反馈接收到的公共配置信息；当该一个或多个比特位表示的数值为数值2时，终端设备基于第一信息不反馈接收到的公共配置信息，数值1和数值2不同。在该实现方式中，第一指示信息用于指示终端设备在接收到小区的公共配置信息后发送第二信息，以便终端设备反馈接收到的公共配置信息。
在一种可能的实现方式中，上述第一指示信息还用于指示上述终端设备反馈接收到的公共配置信息的格式，即上述第二信息的格式。上述第一指示信息还用于指示上述终端设备反馈接收到的公共配置信息的格式可理解为：上述第一指示信息还用于指示上述终端设备通过哪些内容指示接收到的公共配置信息，或者，指示上述终端设备向源小区反馈关于接收到的公共配置信息的哪些内容。例如，第一指示信息用于指示终端设备只反馈收到了小区的公共配置信息，但是不反馈具体收到的小区的信息；也可能指示终端设备需要反馈具体收到了哪些小区的公共配置信息等等。例如，第一指示信息用于指示终端设备仅反馈接收到 的公共配置信息，即不反馈接收到的公共配置信息对应的小区的信息；终端设备根据该第一指示信息可仅反馈接收到的公共配置信息的索引和/或标识。又例如，第一指示信息用于指示终端设备反馈接收到的公共配置信息所属的小区，终端设备根据该第一指示信息可仅反馈接收到的公共配置信息所属的小区的索引和/或标识。又例如，第一指示信息用于指示终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区，终端设备根据该第一指示信息可反馈接收到的公共配置信息所属的小区的索引和/或标识，以及接收到的公共配置信息的索引或标识。第一指示信息一种可能的格式如下：第一指示信息包括一个或多个比特位，若该一个或多个比特位表示数值3，则第一指示信息用于指示终端设备仅反馈接收到的公共配置信息；若该一个或多个比特位表示数值4，则第一指示信息用于指示终端设备仅反馈接收到的公共配置信息所属的小区；若该一个或多个比特位表示数值5，则第一指示信息用于指示终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区。第一指示信息另一种可能的格式如下：终端设备和源网络设备约定好终端设备反馈接收到的公共配置信息的格式；第一指示信息包括一个布尔值，当该布尔值为真(true)时，终端设备反馈接收到的公共配置信息；当该布尔值为假(false)时，终端设备不反馈接收到的公共配置信息。本申请实施例不限定第一指示信息的格式。在该实现方式中，第一指示信息还用于指示终端设备反馈接收到的公共配置信息的格式，以便该终端设备按照特定的格式反馈接收到的公共配置信息。这样可以使得网络设备准确地获知终端设备接收到的公共配置信息。
在一种可能的实现方式中，源网络设备(例如基站)不向终端设备发送第一指示信息，而是约定终端设备接收到小区的公共配置就需要进行反馈。进一步的，还可以约定好反馈的规则，即终端设备反馈接收到的公共配置信息的格式。在该实现方式中，源网络设备约定终端设备接收到小区的公共配置就需要进行反馈，可节约信令开销。
502、终端设备向源网络设备发送第二信息。
相应的，源网络设备接收来自终端设备的第二信息。上述第二信息用于指示上述终端设备接收到的上述至少一个小区的部分或全部小区的公共配置信息。第二信息可通过RRC消息、MAC控制元素(MAC control element，MAC CE)、或者其他消息携带。第二信息可以通过一条或多条消息携带。步骤502一种可能的实现方式如下：终端设备向源网络设备发送携带第二信息的RRC消息。步骤502一种可能的实现方式如下：终端设备向源网络设备发送携带第二信息的MAC CE。在一些实施例中，源网络设备可通过一条消息承载多个小区的公共配置信息，即源网络设备仅发送一条携带第一信息的组播消息或广播消息；终端设备仅针对这一条携带第一信息的组播消息或广播消息，向源网络设备发送第二信息。在一些实施例中，源网络设备通过多条消息承载多个小区的公共配置信息，每条消息承载一个或多个小区的公共配置信息，即源网络设备发送多条携带类似于第一信息的组播消息或广播消息；终端设备分别针对每条消息，向源网络设备发送类似于第二信息的信息。例如，源网络设备向终端设备发送的组播消息1和组播消息2，组播消息1包括小区1和小区2的公共配置信息，组播消息2包括小区3和小区4的公共配置信息；终端设备针对该组播消息1，向源网络设备发送消息1，消息1指示终端设备接收到小区1和小区2的公共配置信息；终端设备针对该组播消息2，向源网络设备发送消息2，消息2指示终端设备接收到小区3和小区4的公共配置信息。一种可能的方式中，终端解析成功部分第一信息，部分第一信息解析失败，则终端设备反馈的就是接收到的第一信息里的小区。终端无法反馈没有解析成功的或者没有接收到的第一信息。例如，源网络设备向终端设备发送的组播消息1和组播消息2，组播消息1包括小区1和小区2的公共配置信息，组播消息2包括小区3和小区4的公共配置信息；终端设备针对该组播消息1，向源网络设备发送消息1，消息1指示终端设备接收到小区1和小区2的公共配置信息；终端设备未收到或未解析成功组播消息2，终端设备不针对组播消息2进行反馈，即不回复消息2。
终端设备向源网络设备发送第二信息的目的是向该源网络设备反馈该终端设备接收到的公共配置信息。上述终端设备接收到的上述至少一个小区的部分或全部公共配置信息是指上述终端设备接收到的上述至少一个小区的公共配置信息中的部分或全部公共配置信息。上述至少一个小区可以为K个小区，K个小区的部分公共配置信息是指该K个小区中的F个小区的公共配置信息，K为大于1的整数，F为小于K且大于0的整数。例如，第一信息包括K个小区的公共配置信息，第二信息用于指示终端设备接收到的该K个小区的部分小区或全部小区的公共配置信息，K为大于1的整数。又例如，第一信息包括小区1、小区2、以及小区3的公共配置信息，第二信息用于指示终端设备接收到小区1、小区2、以及小区3的公共配置信息。又例如，第一信息包括小区1、小区2、以及小区3的公共配置信息，第二信息用于指示终端设备接收到小区1和小区2的公共配置信息。
在一种可能的实现方式中，上述终端设备接收到的上述至少一个小区的部分或全部小区的公共配置信 息包括第一小区的公共配置信息，上述第二信息包括以下一项或多项：上述第一小区的公共配置信息的标识(ID)、上述第一小区的公共配置信息的索引(index)、上述第一小区的标识(ID)、或者上述第一小区的索引。需要注意，第一小区仅为一个举例。终端设备接收到的上述至少一个小区的部分或全部小区还可包括其他小区。公共配置信息的索引可称为公共配置信息的序号。第一小区的索引可称为小区的序号。公共配置信息的索引和公共配置信息的标识均可表示终端设备收到了哪些公共配置信息。例如，第一信息中包括小区(cell)A、小区B、小区C的公共配置信息，参阅表1。假如表1中的1，2，3表示的是公共配置，则1,2,3为公共配置的索引。假如表1中的1，2，3表示的是小区，那个1,2,3就是小区的索引。表1中的A，B，C为小区的标识。
表1
小区的标识是用来标识小区的身份的。例如，第一小区的标识用来标识第一小区的身份。小区的标识可以是全球小区标识(cell global identifier，CGI)，也可以是物理小区标识(physical cell identifier，PCI)，还可以其他标识。小区的索引可表示终端设备收到了哪些小区的公共配置信息。本申请实施例不限定第二信息中具体包括的内容，只要第二信息能够指示终端设备接收到的公共配置信息即可。示例性的，源网络设备可隐性或者间接指示公共配置的标识或者索引。例如，公共配置信息的顺序就是公共配置信息的标识或者索引。例如，第二信息包括第一小区的公共配置信息的标识或索引。又例如，第二信息包括第一小区的索引或标识。又例如，第二信息包括第一小区的公共配置信息的标识和第一小区的标识。又例如，第二信息包括第一小区的索引和第一小区的标识。应理解，上述例子仅为部分举例的示意，这里不穷举。可理解，终端设备接收到的上述至少一个小区的部分或全部小区的公共配置信息还可包括其他小区的公共配置信息，第一小区仅为一个举例。示例性的，终端设备收到第一指示信息后，根据收到的小区的公共配置信息向源网络设备发送第二信息，即反馈收到的公共配置信息。例如，终端设备接收到的至少一个小区的部分或全部小区的公共配置信息包括小区1(即第一小区)和小区2的公共配置信息，第二信息包括小区1的索引和小区2的索引。又例如，例如，终端设备接收到的至少一个小区的部分或全部小区的公共配置信息包括小区1(即第一小区)和小区2的公共配置信息，第二信息包括小区1的公共配置信息的索引和小区2的公共配置信息的。在该实现方式中，第二信息可以准确地指示接收到的公共配置信息，信令开销少。
本申请实施例中，终端设备发送第二信息，该第二信息用于指示该终端设备接收到的至少一个小区的部分或全部公共配置信息，以便网络设备根据第二信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，能够减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
图6为本申请实施例提供的另一种通信方法交互流程图。图6中的方法流程是图5描述的方法的一种可能的实现方式。在该实现方式中，通过不同的消息携带小区的公共配置信息和第一指示信息；可以节省信令开销，并提高小区切换的成功率。如图6所示，该方法包括：
601、源网络设备发送第一信息。
相应的，终端设备接收第一信息。步骤601可参阅步骤501。源网络设备可通过以下任一种方式获取周边邻区的网络设备的小区的公共配置信息。方式一：通过网络设备间的接口消息交互小区的公共配置消息，例如通过XN建立请求，XN建立响应，配置更新消息(NG-RAN NODE CONFIGURATION UPDATE)，配置更新确认消息(NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE)。交互网络设备上的一个或者多个小区的公共配置信息。当小区的公共配置信息有更新时，需要通过接口消息进行更新。方式二：通过运营和维护(operation and maintenance，O&M)获得邻区的公共配置信息，可以是源网络设备向O&M发请求信息，请求信息里携带所请求的小区列表，O&M下发目标小区的公共配置信息给源网络设备，其中O&M负责监控，管理通信网络中的网络设备。另一种可能的方式是网管有网络设备(例如基站)的邻区关系列表，根据邻区关系列表，向网络设备发送邻区的配置。相应的，所有与网管相连的网络设备向网管发送网络设备里小区的公共配置信息。
602、源网络设备发送第三信息。
相应的，终端设备接收第一信息。步骤601和步骤602的先后顺序不作限定。第三信息包括第一指示信息，上述第一指示信息用于指示上述终端设备在接收到小区的公共配置信息后发送上述第二信息，即反馈接收到的公共配置信息。第一指示信息可能的实现方式可参阅上文的描述，这里不再赘述。
在一种可能的实现方式中，第一信息通过组播消息携带，上述第三信息通过系统消息携带，例如第三 信息通过终端设备当前接入的小区的系统信息携带。在另一种可能的实现方式中，第一信息通过组播消息携带，第三信息包括终端设备对应的组标识(例如G-RNTI)和第一指示信息。或者说，第一指示信息在给终端设备配置GRNTI时配置给终端设备。在另一种可能的实现方式中，第一信息和第三信息通过不同的组播消息携带。
603、终端设备向源网络设备发送第二信息。
相应的，源网络设备接收来自终端设备的第二信息。步骤603可参阅步骤502。
604、源网络设备确定将终端设备切换至目标小区。
目标小区可以是与终端设备当前接入的源小区相邻的小区。步骤604是可选的。目标网络设备是为目标小区提供服务的接入网设备，即管理目标小区的接入网设备。
605、在终端设备接收到的至少一个小区的部分或全部小区的公共配置信息包括目标小区的公共配置信息的情况下，源网络设备向终端设备发送第四信息。
上述第四信息用于上述终端设备切换至上述目标小区。第四信息可包括目标小区的标识或索引。第四信息可通过切换命令携带。上述第四信息包括上述终端设备在目标小区的专有的配置信息。上述第四信息可不包括上述目标小区的公共配置信息。终端设备接收到的至少一个小区的部分或全部小区的公共配置信息可理解为：源网络设备根据第二信息，确定的终端设备接收到的小区的公共配置信息。步骤605可替换为：在确定终端设备已有的小区的公共配置信息包括目标小区的公共配置信息的情况下，源网络设备向终端设备发送第四信息。或者说，在确定终端设备已有目标小区的公共配置信息的情况下，源网络设备向终端设备发送第四信息。源网络设备可根据来自终端设备的信息(例如第二信息)确定终端设备已有的小区的公共配置信息。源网络设备也可通过其他方式确定终端设备已有的小区的公共配置信息，本申请实施例不作限定。
步骤605可替换为：在终端设备接收到的至少一个小区的部分或全部小区的公共配置信息未包括目标小区的公共配置信息的情况下，源网络设备向终端设备发送第七信息。上述第七信息用于上述终端设备切换至上述目标小区。第七信息可通过切换命令携带。上述第七信息包括上述终端设备在接入上述目标小区所需要的专有的配置信息和上述目标小区的公共配置信息。或者说，第七信息包括上述终端设备接入上述目标小区所需的全部的配置信息。或者，步骤605可替换为：在确定终端设备已有的小区的公共配置信息未包括目标小区的公共配置信息的情况下，源网络设备向终端设备发送第七信息。
在一种可能的实现方式中，上述第四信息包括第二指示信息，上述第二指示信息用于指示上述第四信息未携带上述目标小区的公共配置信息。或者，上述第二指示信息用于指示上述终端设备基于上述目标小区的系统消息中的公共配置信息接入上述目标小区。第二指示信息一种可能的格式如下：第二指示信息包括一个布尔值，当该布尔值为真(true)时，第二指示信息用于指示第四信息未携带目标小区的公共配置信息；当该布尔值为假(false)时，第二指示信息用于指示第四信息携带目标小区的公共配置信息。第二指示信息另一种可能的格式如下：第二指示信息包括一个或多个比特位，若第四信息未携带目标小区的公共配置信息，第四信息携带该一个或多个比特位，即第二指示信息；若第四信息携带目标小区的公共配置信息，该第四信息不携带该一个或多个比特位，即第二指示信息。第二指示信息另一种可能的格式如下：第二指示信息包括一个或多个比特位，当该一个或多个比特位表示的数值为数值5时，第二指示信息用于指示第四信息未携带目标小区的公共配置信息；当该一个或多个比特位表示的数值为数值6时，第二指示信息用于指示第四信息携带目标小区的公共配置信息，数值5和数值6不同。在该实现方式中，第四信息包括第二指示信息，该第二指示信息指示第四信息未携带上述目标小区的公共配置信息或终端设备基于目标小区的系统消息中的公共配置信息接入目标小区，可以避免终端设备将第四信息中的终端设备在目标小区的专有的配置信息解析为小区的配置信息。
606、终端设备利用目标小区的公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区。
终端设备在执行步骤606之前，可从存储或缓存中获取目标小区的公共配置信息，并根据第四信息获取终端设备在目标小区的专有的配置信息接入目标小区。步骤605和步骤606是可选的，而非必要的。
本申请实施例中，通过不同的消息携带小区的公共配置信息和第一指示信息，终端设备根据第一指示信息发送第二信息。网络设备根据第二信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，可减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
图7为本申请实施例提供的另一种通信方法交互流程图。图7中的方法流程是图5描述的方法的一种可能的实现方式。如图7所示，该方法包括：
701、源网络设备发送携带G-RNTI的组播消息。
源网络设备在发送携带G-RNTI的组播消息之前，可先将多个终端设备(例如源网络设备的小区内的多个终端设备)进行分组，并为不同组的终端设备分配不同的组标识，即G-RNTI。具体的，每个组内的G-RNTI相同，不同组之间的G-RNTI不同。终端设备可通过G-RNTI监听PDCCH上发送的候选小区的公共配置信息。步骤701可理解为：源网络设备为不同组的终端设备分配不同的组标识。图7中，以终端设备1、终端设备2、终端设备3为例，描述终端设备可能的执行的操作。应理解，在实际应用中，源网络设备的小区内的终端设备的个数可能更多或更少，图7仅为一种示例，终端设备1、终端设备2、终端设备3位于同一分组内。
步骤701是可选的。步骤701可替换为：每个终端设备按照某种规则，生成G-RNTI。例如，源网络设备在系统消息中下发G-RNTI的规格，如区域A内的GRNTI为GRNTI-1，区域B内的GRNTI为GRNTI-2，UE根据自己的位置信息确定G-RNTI。终端设备还可通过其他方式，确定G-RNTI，本申请实施例不作限定。
702、源网络设备发送携带小区1、小区2以及小区3的公共配置信息的组播消息。
源网络设备可通过G-RNTI加扰的PDCCH指示物理下行共享信道(physical downlink shared channel，PDSCH)的位置，并在PDSCH上发送携带一个或多个小区的公共配置信息的组播消息。相应的，终端设备(例如终端设备1、终端设备2、终端设备3)根据G-RNTI监听PDCCH后得到PDSCH的时频域位置，终端在PDSCH的时频域位置上接收来自源网络设备的组播消息。也就是说，源网络设备可通过组播的方式发送小区1、小区2、以及小区3的公共配置信息。一条组播消息中可包括一个或者多个小区的公共配置信息。源网络设备也可以发送多条组播消息，每条组播消息中包括一个或多个小区的公共配置信息。
源网络设备发送1条组播消息，携带小区1，小区2，小区3的公共配置信息。源网络设备发送2条组播消息，消息1中携带小区1，小区2的公共配置信息；消息2中携带小区3的公共配置信息。
步骤701和步骤702可替换为：源网络设备发送携带小区1、小区2以及小区3的公共配置信息的系统消息。
703、终端设备1向源网络设备发送反馈信息1。
反馈信息1用于指示终端设备1接收到小区1、小区2、小区3的公共配置信息。反馈信息1可承载于一条或多条消息。例如，源网络设备发送1条组播消息，携带小区1，小区2，小区3的公共配置信息，终端设备1向源网络设备发送一条携带反馈信息1的消息。例如，源网络设备发送2条组播消息，消息1中携带小区1和小区2的公共配置信息；消息2中携带小区3的公共配置信息；终端设备向源网络设备发送2条消息，一条消息中携带的反馈信息指示接收到小区1和小区2的公共配置信息，另一条消息中携带的反馈信息指示接收到小区3的公共配置信息。
704、源网络设备根据反馈信息1，向终端设备1发送切换命令1。
切换命令1用于终端设备1切换至目标小区。目标小区为小区3。切换命令1包括终端设备1在目标小区的专有的配置信息，且不包括目标小区的公共配置信息。源网络设备在执行步骤704之前，可确定将终端设备1切换至目标小区3。步骤704一种可能的实现方式如下：源网络设备根据反馈信息1，确定终端设备1接收到目标小区的公共配置信息；向终端设备1发送切换命令1。
705、终端设备1根据终端设备1在目标小区的专有的配置信息和目标小区的公共配置信息，接入目标小区。
706、终端设备2向源网络设备发送反馈信息2。
反馈信息2用于指示终端设备1接收到小区1、小区2的公共配置信息。
707、源网络设备根据反馈信息2，向终端设备1发送切换命令2。
切换命令2用于终端设备2切换至目标小区。目标小区为小区3。切换命令2包括终端设备2在目标小区的专有的配置信息，以及目标小区的公共配置信息。或者说，切换命令2包括终端设备在目标小区3接入所需要的配置信息，包含小区公共配置和终端设备专有配置。源网络设备在执行步骤707之前，可确定将终端设备1切换至目标小区。步骤707一种可能的实现方式如下：源网络设备根据反馈信息2，确定终端设备2未接收到目标小区的公共配置信息；向终端设备2发送切换命令2。
708、终端设备2根据终端设备2在目标小区的专有的配置信息和目标小区的公共配置信息，接入目标小区。
结合步骤703至步骤705，以及步骤706至步骤708可知，源网络设备可根据终端设备的反馈信息确定终端设备是否收到目标小区的公共配置信息，进而根据终端设备是否收到目标小区的公共配置信息相应 的发送切换命令。例如，终端设备1收到了目标小区的公共配置信息，则源网络设备向终端设备1发送不携带目标小区的公共配置信息的切换命令。又例如，终端设备2未收到了目标小区的公共配置信息，则源网络设备向终端设备2发送携带目标小区的公共配置信息的切换命令。步骤703至步骤705可视为终端设备1的切换流程，步骤706至步骤708可视为终端设备2的切换流程，这两个切换流程的先后顺序不作限定。
709、源网络设备向终端设备3发送切换命令3。
切换命令3用于终端设备3切换至目标小区。目标小区为小区3。切换命令3包括终端设备3在目标小区的专有的配置信息，未包括目标小区的公共配置信息。
710、终端设备3根据切换命令3，获取目标小区的SIB中的第一公共配置信息。
终端设备3接收到的公共配置信息未包括上述目标小区的公共配置信息。或者说，终端设备3已有的小区的公共配置信息未包括上述目标小区的公共配置信息。步骤710一种可能的实现方式如下：在终端设备3接收到的公共配置信息未包括目标小区的公共配置信息的情况下，终端设备3根据切换命令3，获取目标小区的SIB中的第一公共配置信息。需要注意，目标小区的系统消息中的一或多个SIB中的公共配置信息，即第一公共配置信息，类似于目标小区的公共配置信息。
711、终端设备3利用第一公共配置信息和终端设备3在目标小区的专有的配置信息接入目标小区。
步骤709至步骤711是可选的。步骤709至步骤711示出了未收到目标小区的公共配置信息的终端设备，在收到未携带目标小区的公共配置信息的切换命令之后，接入目标小区的过程。
在一些实施例中，图7中的方法流程应用于卫星通信场景，例如上述场景1和场景2。在任何需要在短时间内将大量的终端设备从服务小区切换到目标小区的场景，例如上述场景1和场景2，图7中的方法流程均适用。图7中的，终端设备1、终端设备2、终端设备3执行的小区切换流程可理解为源网络设备的小区内的终端设备在短时间内切换至目标网络设备的目标小区的示例。本申请实施例中的小区可以是准静止小区，也可以是移动小区。
本申请实施例中，终端设备向源网络设备发送反馈信息来反馈各自接收到的小区的公共配置信息。网络设备根据每个终端设备的反馈信息决定是给终端设备下发携带小区的配置信息的切换命令，还是下发携带该终端设备专有的配置信息的切换命令，可减少由于终端设备缺少小区的公共配置信息而导致的小区切换失败，从而提高小区切换的成功率。
图8为本申请实施例提供的另一种通信方法交互流程图。图8中的方法流程可以是一个独立的方法流程，也可以与图5中的方法流程相结合。例如，终端设备和源网络设备在执行图5中的方法流程之后，执行图8中的方法流程。图8中的方法流程是图5描述的方法的一种可能的实现方式。在该实现方式中，终端设备在接收到的公共配置信息未包括目标小区的公共配置信息(即未接收到目标小区的公共配置信息)的情况下，终端设备利用目标小区的系统消息中的公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区；可以提高小区切换的成功率。如图8所示，该方法包括：
801、源网络设备确定将终端设备切换至目标小区。
目标小区可以是与终端设备当前接入的源小区相邻的小区。步骤801可参阅步骤604。步骤801是可选的。
802、源网络设备向终端设备发送第五信息。
相应的，终端设备接收来自源网络设备的第五信息。第五信息用于上述终端设备切换至目标小区。第五信息可通过切换命令携带。上述第五信息包括上述终端设备在上述目标小区的专有的配置信息，且未包括目标小区的公共配置信息。
803、终端设备根据第五信息，获取目标小区的SIB中的第一公共配置信息。
终端设备接收到的公共配置信息未包括上述目标小区的公共配置信息。或者说，终端设备已有的小区的公共配置信息未包括上述目标小区的公共配置信息。步骤803一种可能的实现方式如下：在终端设备接收到的公共配置信息未包括目标小区的公共配置信息的情况下，终端设备根据第五信息，获取目标小区的SIB中的第一公共配置信息。需要注意，目标小区的系统消息中的一或多个SIB中的公共配置信息，即第一公共配置信息，类似于目标小区的公共配置信息。终端设备根据目标小区的系统消息中的一或多个SIB中的公共配置信息和终端设备在目标小区的专有的配置信息可接入目标小区。本申请实施例不限定第一公共配置信息中的具体内容。第一公共配置信息是系统消息中用于终端设备接入的配置信息。例如，第一公共配置信息可能与目标小区的公共配置信息相同，第一公共配置信息也可能与目标小区的公共配置信息不同。可以理解的是，终端设备可以通过目标小区的系统消息中的第一公共配置信息向目标小区发起接入， 其中可能包括随机接入接入。由于终端设备需要读取系统消息，所以这样会增加切换入目标小区的切换时延。又例如，第一公共配置信息包括目标小区的公共配置信息中的一部分信息，以及其他可用于接入目标小区的信息。
在一种可能的实现方式中，第五信息可包括目标小区的PCI和频点；终端设备根据第五信息，获取目标小区的SIB中的第一公共配置信息可以是：根据第五信息中的目标小区的PCI和频点，与目标小区进行下行同步，并读取目标小区的主信息块(master information block，MIB)；根据MIB提供的信息读取SIB1，再通过SIB1读取SIB1中和/或其他系统消息中的,例如SIB19，第一公共配置信息。可选的，目标网络设备在SIB中周期广播切换时小区的公共配置信息的相关信息，例如包含PDCCH位置，PDCCH用于指示PDSCH的时频域信息，PDSCH中包含了切换时目标小区的公共配置信息。可选的，终端设备根据一个G-RNTI去读取SIB中的第一公共配置信息。G-RNTI可以是终端设备和源网络设备事先约定好的，例如在系统消息中下发G-RNTI的生成规则，例如指示位置区域对GRNTI的对应关系，终端设备根据所处的地理位置属于哪个位置区域来获得与该位置区域对应的GRNTI；也可以是在携带第五信息的切换信令中下发给终端设备的。
804、终端设备利用第一公共配置信息和终端设备在目标小区的专有的配置信息向目标小区发起随机接入。
805、终端设备向目标网络设备发送第三指示信息。
相应的，目标网络设备接收来自终端设备的第三指示信息。目标网络设备可以是为目标小区提供服务的接入网设备。或者说，目标网络设备管理目标小区。第三指示信息用于指示上述终端设备在向上述目标小区切换前，未接收到上述目标小区的公共配置信息。在一种可能的实现方式中，上述第三指示信息通过随机接入过程中的第三条消息(即Msg3)携带。步骤805是可选的。步骤805一种可能的实现方式如下：终端设备向目标小区发起随机接入，并在Msg3中携带第三指示信息。
806、目标网络设备根据第三指示信息，向终端设备发送第六信息。
相应的，终端设备接收来自目标网络设备的第六信息。第六信息用于上述终端设备获取上述目标小区的公共配置信息。上述第六信息可包括上述目标小区的公共配置信息。上述第六信息可包括上述目标小区的公共配置信息。或者，上述第六信息可包括上述目标小区的公共配置信息相对于第一公共配置信息的增量配置信息。第六信息可通过RRC重配置信息承载。
步骤806是可选的。目标网络设备根据第三指示信息，可向终端设备发送第六信息，也可以不发送携带目标小区的公共配置信息的消息，即不发送携带第六信息的消息。应理解，目标网络设备根据第三指示信息，可以决定下发目标小区的公共配置信息，也可以决定不下发目标小区的公共配置信息。在一种可能的实现方式中，目标网络设备根据一个或者多个系统消息中的第一公共配置信息和在切换请求确认消息中目标小区为终端设备配置的目标小区的公共配置信息，来确定是否要给终端设备补发目标小区的公共配置信息。例如，当目标网络设备确定第一公共配置信息和切换请求确认消息中的公共配置信息相同时，目标网络不向终端设备发送第六信息；当目标网络设备确认第一公共配置信息可以替代切换请求确认消息中的公共配置信息时，目标网络网络不向终端设备发送第六信息。
807、终端设备向目标网络设备发送第四指示信息。
上述第四指示信息用于指示上述终端设备接收到的第二小区的公共配置信息。上述第二小区包含于上述至少一个小区，上述第二小区属于上述目标小区的邻区。也就是说，第四指示信息用于指示终端设备已有的且与目标小区相邻的小区的公共配置信息。第四指示信息包括以下一项或多项：上述第二小区的公共配置信息的标识、上述第二小区的公共配置信息的索引、上述第二小区的标识、或者上述第二小区的索引。例如，终端设备的源小区广播其邻区2、邻区3、邻区4、邻区5的公共配置信息，该终端设备从源小区切换到邻区2(即目标小区)；若邻区2的邻区包括邻区3、邻区4、邻区5，该终端设备向目标网络网络发送第四指示信息，该第四指示信息用于指示终端设备接收到邻区3、邻区4、邻区5的公共配置信息。步骤807是可选的。终端设备向目标网络设备发送第四指示信息，以便目标网络设备获知终端设备接收到的小区的公共配置信息。这样目标网络设备在向终端设备发送切换命令时，可以根据第四指示信息决定在该切换命令中是携带小区的配置信息，还是携带终端设备在新的目标小区的专有的配置信息。
808、终端设备删除至少一个小区中的第三小区的公共配置信息。
上述第三小区不属于上述目标小区的邻区。步骤808是可选的。步骤808的目的是删除与目标小区不相邻的小区的公共配置信息。由于第三小区不属于目标小区的邻区，因此终端设备不可能直接从目标小区切换至该第三小区，即终端设备基本不会用到第三小区的公共配置信息。终端设备删除第三小区的公共配 置信息可以节省存储开销。
本申请实施例中，终端设备在接收到的公共配置信息未包括目标小区的公共配置信息(即未接收到目标小区的公共配置信息)的情况下，终端设备利用目标小区的系统消息中的公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区；可以提高小区切换的成功率。
图9为本申请实施例提供的另一种通信方法交互流程图。图9中的方法流程是图7描述的方法的一种可能的实现方式。图9中的方法流程可以是一个独立的方法流程，也可以与图5中的方法流程相结合。例如，终端设备和源网络设备在执行图5中的方法流程之后，执行图9中的方法流程。在该实现方式中，终端设备在接收到的公共配置信息未包括目标小区的公共配置信息(即未接收到目标小区的公共配置信息)的情况下，终端设备利用目标小区的系统消息中的公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区；可以提高小区切换的成功率。如图9所示，该方法包括：
901、源网络设备向终端设备发送切换命令。
相应的，终端设备接收来自源网络设备的切换命令。切换命令可包括上述第五信息。切换命令用于上述终端设备切换至目标小区。切换命令包括上述终端设备在目标小区的专有的配置信息，且未包括目标小区的公共配置信息。终端设备在目标小区的专有的配置信息中至少需要包含目标小区的PCI和频点。
902、终端设备根据切换命令中的目标小区的PCI和频点，与目标小区进行下行同步，并读取目标小区的MIB。
903、UE根据MIB读取SIB中包含的第一公共配置信息。
终端设备根据切换命令中目标小区的信息搜索目标小区的主同步信号(primary synchronization signal，PSS)/辅同步信号(secondary synchronization signal，SSS)，解码物理广播信道(physical broadcast channel，PBCH)获得主信息块(master information block，MIB),解码SIB1和其他SI。从系统消息中，获得第一公共配置信息。如通过MIB或者SIB1或者SIB19获得的第一公共配置信息。其中地面网络中，MIB和SIB1就可以。在NTN网络中，可能额外需要SIB19.
904、终端设备利用第一公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区。
905、终端设备向目标网络设备发送第三指示信息。
相应的，目标网络设备接收来自终端设备的第三指示信息。步骤905可参阅步骤805。
906、目标网络设备根据第三指示信息，向终端设备发送第六信息。
相应的，终端设备接收来自目标网络设备的第六信息。步骤906可参阅步骤806。
本申请实施例中，终端设备在接收到的公共配置信息未包括目标小区的公共配置信息(即未接收到目标小区的公共配置信息)的情况下，终端设备利用目标小区的系统消息中的公共配置信息和终端设备在目标小区的专有的配置信息接入目标小区；可以提高小区切换的成功率。
下面结合附图介绍可实施本申请实施例提供的调度方法的通信装置的结构。下文仅对通信装置进行了简要说明，对于方案实现细节，可以参考前文方法实施例的描述，下文不再赘述。
图10为本申请实施例提供的一种通信装置1000的结构示意图。该通信装置1000可以对应实现上述各个方法实施例中发送端实现的功能或者步骤，也可以对应实现上述各个方法实施例中接收端实现的功能或者步骤。该通信装置可以包括处理模块1010和收发模块1020。在一种可能的实现方式中，还可以包括存储单元，该存储单元可以用于存储指令(代码或者程序)和/或数据。处理模块1010和收发模块1020可以与该存储单元耦合，例如，处理模块1010可以读取存储单元中的指令(代码或者程序)和/或数据，以实现相应的方法。上述各个单元可以独立设置，也可以部分或者全部集成。例如，收发模块1020可包括发送模块和接收模块。发送模块可以是发射机，接收模块可以是接收机。收发模块1020对应的实体可以是收发器，也可以是通信接口。
在一些可能的实施方式中，通信装置1000能够对应实现上述方法实施例中终端设备的行为和功能。例如通信装置1000可以为终端设备，也可以为应用于终端设备中的部件(例如芯片或者电路)。收发模块1020例如可以用于执行图5至图9的实施例中由终端设备所执行的全部接收或发送操作，例如图5所示的实施例中的步骤501、步骤502，图6所示的实施例中的步骤601、步骤602、步骤603、步骤605，图7所示的实施例中的步骤701、步骤702、步骤703、步骤704，和/或用于支持本文所描述的技术的其它过程。处理模块1010用于执行图5至图9的实施例中由终端设备所执行的除了收发操作之外的全部操作，例如图6所示的实施例中的步骤606。
在一些可能的实施方式中，通信装置1000能够对应实现上述方法实施例中源网络设备的行为和功能。 例如通信装置1000可以为源网络设备，也可以为应用于源网络设备中的部件(例如芯片或者电路)。收发模块1020例如可以用于执行图5至图9的实施例中由源网络设备所执行的全部接收或发送操作，例如图5所示的实施例中的步骤501、步骤502，图6所示的实施例中的步骤601、步骤602、步骤603、步骤605，图7所示的实施例中的步骤701、步骤702、步骤703、步骤704、步骤706、步骤707、步骤709、步骤710，和/或用于支持本文所描述的技术的其它过程。处理模块1010用于执行由源网络设备所执行的除了收发操作之外的全部操作，例如图6所示的实施例中的步骤604，图8所示的实施例中的步骤801。
在一些可能的实施方式中，通信装置1000能够对应实现上述方法实施例中目标网络设备的行为和功能。例如通信装置1000可以为目标网络设备，也可以为应用于目标网络设备中的部件(例如芯片或者电路)。收发模块1020例如可以用于执行图6至图9的实施例中由目标网络设备所执行的全部接收或发送操作。处理模块1010用于执行由目标网络设备所执行的除了收发操作之外的全部操作。
图11为本申请实施例提供的另一种通信装置110的结构示意图。图11中的通信装置可以是上述终端设备，也可以是上述源网络设备，还可以是上述目标网络设备。
如图11所示，该通信装置110包括至少一个处理器1110和收发器1120。
在本申请的一些实施例中，处理器1110和收发器1120可以用于执行终端设备执行的功能或操作等。收发器1120例如执行图5至图9的实施例中由终端设备所执行的全部接收或发送操作。处理器1110例如用于执行图5至图9的实施例中由终端设备所执行的除了收发操作之外的全部操作。
在本申请的一些实施例中，处理器1110和收发器1120可以用于执行源网络设备执行的功能或操作等。收发器1120例如执行图5至图9的实施例中由源网络设备所执行的全部接收或发送操作。处理器1110用于执行由源网络设备所执行的除了收发操作之外的全部操作。
在本申请的一些实施例中，处理器1110和收发器1120可以用于执行目标网络设备执行的功能或操作等。收发器1120例如执行图6至图9的实施例中由目标网络设备所执行的全部接收或发送操作。处理器1110用于执行由目标网络设备所执行的除了收发操作之外的全部操作。
收发器1120用于通过传输介质和其他设备/装置进行通信。处理器1110利用收发器1120收发数据和/或信令，并用于实现上述方法实施例中的方法。处理器1110可实现处理模块1010的功能，收发器1120可实现收发模块1020的功能。
例如：收发器1120可以包括射频电路和天线，射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。
例如：通信装置110还可以包括至少一个存储器1130，用于存储程序指令和/或数据。存储器1130和处理器1110耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1110可能和存储器1130协同操作。处理器1110可能执行存储器1130中存储的程序指令。该至少一个存储器中的至少一个可以包括于处理器中。
处理器1110可以读取存储器1130中的软件程序，解释并执行软件程序的指令，处理软件程序的数据。当需要通过无线发送数据时，处理器1110对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到通信装置时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器1110，处理器1110将基带信号转换为数据并对该数据进行处理。
在另一种实现中，上述的射频电路和天线可以独立于进行基带处理的处理器而设置，例如在分布式场景中，射频电路和天线可以与独立于通信装置，呈拉远式的布置。
本申请实施例中不限定上述收发器1120、处理器1110以及存储器1130之间的具体连接介质。本申请实施例在图11中以存储器1130、处理器1110以及收发器1120之间通过总线1140连接，总线在图11中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图11中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列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，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤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。
图12为本申请实施例提供的另一种通信装置120的结构示意图。如图12所示，图12所示的通信装置包括逻辑电路1201和接口1202。图10中的处理模块1010可以用逻辑电路1201实现，图10中的收发模块1020可以用接口1202实现。其中，该逻辑电路1201可以为芯片、处理电路、集成电路或片上系统(system on chip，SoC)芯片等，接口1202可以为通信接口、输入输出接口等。本申请实施例中，逻辑电路和接口还可以相互耦合。对于逻辑电路和接口的具体连接方式，本申请实施例不作限定。
在本申请的一些实施例中，该逻辑电路和接口可用于执行上述终端设备端执行的功能或操作等。
在本申请的一些实施例中，该逻辑电路和接口可用于执行上述源网络设备执行的功能或操作等。
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中存储有计算机程序或指令，当计算机程序或指令在计算机上运行时，使得计算机执行上述实施例的方法。
需要说明的是，本领域普通技术人员可以看到上述实施例的各种方法中的全部或部分步骤是可以通过程序来指示相关的硬件来完成，该程序可以存储于计算机可读存储介质中。计算机可读存储介质包括只读存储器(read-only memory，ROM)、随机存储器(random access memory，RAM)、可编程只读存储器(programmable read-only memory，PROM)、可擦除可编程只读存储器(erasable programmable read only memory，EPROM)、一次可编程只读存储器(one-time programmable read-only memory，OTPROM)、电子抹除式可复写只读存储(Electrically-Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc read-only memory，CD-ROM)或其他光盘存储器、磁盘存储器、磁带存储器、或者能够用于携带或存储数据的计算机可读的任何其他介质。
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指令或计算机程序，当该指令或计算机程序在计算机上运行时，使得上述实施例中的方法被执行。
本申请还提供一种通信系统，包括上述终端设备和上述源网络设备。该通信系统还可包括上述目标网络设备。
本申请还提供一种芯片，该芯片包括：通信接口和处理器；该通信接口，用于上述芯片的信号收发；该处理器，用于执行计算机程序指令，使得包括上述芯片的通信装置执行如上述实施例中的方法。
在上述实施例中，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。上述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行上述计算机程序或指令时，全部或部分地执行本申请实施例上述的流程或功能。上述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。上述计算机程序或指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，上述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。上述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。上述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，数字视频光盘；还可以是半导体介质，例如，固态硬盘。该计算机可读存储介质可以是易失性或非易失性存储介质，或可包括易失性和非易失性两种类型的存储介质。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。

Claims (30)

  1. 一种通信方法，其特征在于，所述方法包括：
    终端设备接收第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息通过组播消息或广播消息携带；
    所述终端设备发送第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括第一小区的公共配置信息，所述第二信息包括以下一项或多项：所述第一小区的公共配置信息的标识、所述第一小区的公共配置信息的索引、所述第一小区的标识、或者所述第一小区的索引。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息。
  4. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第三信息，所述第三信息包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；
    所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；
    或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监听物理下行控制信道PDCCH。
  5. 根据权利要求3或4所述的方法，其特征在于，所述第一指示信息还用于指示所述终端设备反馈接收到的公共配置信息的格式。
  6. 根据权利要求5所述的方法，其特征在于，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息所属的小区，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第四信息，所述第四信息用于指示所述终端设备切换至目标小区；
    所述第四信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息包括所述目标小区的公共配置信息。
  8. 根据权利要求7所述的方法，其特征在于，所述第四信息包括第二指示信息，所述第二指示信息用于指示所述第四信息未携带所述目标小区的公共配置信息，或者，所述第二指示信息用于指示所述终端设备基于所述目标小区的系统消息中的公共配置信息接入所述目标小区。
  9. 根据权利要求1至6任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第五信息，所述第五信息用于所述终端设备切换至目标小区，所述第五信息包括所述终端设备在所述目标小区的专有的配置信息，所述终端设备接收到的公共配置信息未包括所述目标小区的公共配置信息；
    所述终端设备根据所述第五信息，获取所述目标小区的系统信息块SIB中的第一公共配置信息；
    所述终端设备利用所述第一公共配置信息和所述终端设备在所述目标小区的专有的配置信息接入所述目标小区。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    所述终端设备发送第三指示信息，所述第三指示信息用于指示所述终端设备在向所述目标小区切换前，未接收到所述目标小区的公共配置信息。
  11. 根据权利要求10所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
  12. 根据权利要求11所述的方法，其特征在于，所述第六信息包括所述目标小区的公共配置信息或者所述目标小区的公共配置信息相对于所述终端设备的源小区的公共配置信息的增量配置信息。
  13. 一种通信方法，其特征在于，所述方法包括：
    源网络设备发送第一信息，所述第一信息包括至少一个小区的公共配置信息，所述第一信息通过组播消息或广播消息携带；
    所述源网络设备接收第二信息，所述第二信息用于指示所述终端设备接收到的所述至少一个小区的部分或全部公共配置信息。
  14. 根据权利要求13所述的方法，其特征在于，所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括第一小区的公共配置信息，所述第二信息包括以下一项或多项：所述第一小区的公共配置信息的标识、所述第一小区的公共配置信息的索引、所述第一小区的标识、或者所述第一小区的索引。
  15. 根据权利要求13或14所述的方法，其特征在于，所述第一信息还包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息。
  16. 根据权利要求13或14所述的方法，其特征在于，所述方法还包括：
    所述源网络设备发送第三信息，所述第三信息包括第一指示信息，所述第一指示信息用于指示所述终端设备在接收到小区的公共配置信息后发送所述第二信息；
    所述第一信息通过组播消息携带，所述第三信息通过系统消息携带；
    或者，所述第一信息通过组播消息携带，所述第三信息包括所述终端设备对应的组标识和所述第一指示信息，所述组标识用于所述终端设备监听物理下行控制信道PDCCH。
  17. 根据权利要求15或16所述的方法，其特征在于，所述第一指示信息还用于指示所述终端设备反馈接收到的公共配置信息的格式。
  18. 根据权利要求17所述的方法，其特征在于，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息所属的小区，或者，所述第一指示信息用于指示所述终端设备反馈接收到的公共配置信息以及接收到的公共配置信息所属的小区。
  19. 根据权利要求13至18任一项所述的方法，其特征在于，所述方法还包括：
    所述源网络设备确定将所述终端设备切换至目标小区；
    在所述终端设备接收到的所述至少一个小区的部分或全部小区的公共配置信息包括所述目标小区的公共配置信息的情况下，所述源网络设备向所述终端设备发送第四信息，所述第四信息用于所述终端设备切换至所述目标小区，所述第四信息包括所述终端设备专有的配置信息。
  20. 根据权利要求19所述的方法，其特征在于，所述第四信息包括第二指示信息，所述第二指示信息用于指示所述第四信息未携带所述目标小区的公共配置信息，或者，所述第二指示信息用于指示所述终端设备基于所述目标小区的系统消息中的公共配置信息接入所述目标小区。
  21. 一种通信方法，其特征在于，所述方法包括：
    目标网络设备接收第三指示信息，所述第三指示信息用于指示终端设备在向目标小区切换前，未接收到所述目标小区的公共配置信息，所述目标小区由所述目标网络设备提供服务；
    所述目标网络设备发送第六信息，所述第六信息用于所述终端设备获取所述目标小区的公共配置信息。
  22. 根据权利要求21所述的方法，其特征在于，所述第六信息包括所述目标小区的公共配置信息或者所述目标小区的公共配置信息相对于所述终端设备的源小区的公共配置信息的增量配置信息。
  23. 根据权利要求21或22所述的方法，其特征在于，所述第三指示信息通过随机接入过程中的第三条消息携带。
  24. 一种通信装置，其特征在于，包括用于实现权利要求1至12中任一项所述的方法的模块或单元。
  25. 一种通信装置，其特征在于，包括用于实现权利要求13至20中任一项所述的方法的模块或单元。
  26. 一种通信装置，其特征在于，包括用于实现权利要求21至23中任一项所述的方法的模块或单元。
  27. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，所述计算机程序包括程序指令，所述程序指令被执行时使得计算机执行如权利要求1至23中任一项所述的方法。
  28. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合，所述存储器存储计算机程序指令，所述处理器用于执行所述计算机程序指令，使得所述通信装置执行如权利要求1至23任一项所述的方法。
  29. 一种芯片，其特征在于，包括：
    通信接口，用于所述芯片的信号收发；以及
    处理器，用于执行计算机程序指令，使得包括所述芯片的通信装置执行如权利要求1至23任一项所述的方法。
  30. 一种通信系统，其特征在于，包括如权利要求24所述的通信装置，以及如权利要求25所述的通信装置。
PCT/CN2023/127223 2022-11-03 2023-10-27 通信方法和通信装置 WO2024093840A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211380339.XA CN117998493A (zh) 2022-11-03 2022-11-03 通信方法和通信装置
CN202211380339.X 2022-11-03

Publications (1)

Publication Number Publication Date
WO2024093840A1 true WO2024093840A1 (zh) 2024-05-10

Family

ID=90896191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/127223 WO2024093840A1 (zh) 2022-11-03 2023-10-27 通信方法和通信装置

Country Status (2)

Country Link
CN (1) CN117998493A (zh)
WO (1) WO2024093840A1 (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021092860A1 (zh) * 2019-11-14 2021-05-20 Oppo广东移动通信有限公司 一种小区配置方法及装置、终端设备、网络设备
WO2021219322A1 (en) * 2020-04-30 2021-11-04 Panasonic Intellectual Property Corporation Of America User equipment and base station
US20220070740A1 (en) * 2019-01-11 2022-03-03 Nec Corporation Radio access network node, radio terminal, and method therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220070740A1 (en) * 2019-01-11 2022-03-03 Nec Corporation Radio access network node, radio terminal, and method therefor
WO2021092860A1 (zh) * 2019-11-14 2021-05-20 Oppo广东移动通信有限公司 一种小区配置方法及装置、终端设备、网络设备
WO2021219322A1 (en) * 2020-04-30 2021-11-04 Panasonic Intellectual Property Corporation Of America User equipment and base station

Also Published As

Publication number Publication date
CN117998493A (zh) 2024-05-07

Similar Documents

Publication Publication Date Title
EP3570574B1 (en) Method and device for node addition
WO2022073501A1 (zh) 切换方法、终端、网络设备及中继
KR101299146B1 (ko) 기지국 사이의 핸드오버 방법
US20200022104A1 (en) Method For Sending Paging Message And Related Device
WO2021160091A1 (zh) 一种用于组切换的方法和装置
US11337124B2 (en) First base station, second base station, terminal apparatus, method, program, and recording medium
EP3457722B1 (en) Radio communication system
US20240334269A1 (en) Configuration enhancements for an intra-gnb-du intra-frequency l1/l2 inter cell change
US20220394562A1 (en) Device and Method of Configuring a Group Handover/Cell Reselection
US20220394604A1 (en) Method for providing network slice, and communication apparatus
WO2023061255A1 (zh) 一种通信方法
US20230199709A1 (en) Information processing method, terminal device, and network device
WO2021204022A1 (zh) 一种测量方法和装置
WO2022233545A1 (en) Physical cell identity collision resolution for wireless networks
WO2018171451A1 (zh) 一种系统信息的传输方法及装置
CN118077248A (zh) 用于无线网络的pscell的有条件重新配置期间的测量配置更新
WO2024093840A1 (zh) 通信方法和通信装置
CN103702421A (zh) 一种本地公共资源管理方法及设备
EP4319458A2 (en) Improving cell access procedure
JP7394856B2 (ja) 端末装置、基地局装置、及び無線通信方法
WO2024140216A1 (zh) 通信方法和通信装置
WO2024207978A1 (zh) 通信方法和通信装置
US20240224191A1 (en) Methods of controlling charging for user equipment, and communication device
EP4366329A1 (en) Network node and communication method
US20230247389A1 (en) Method, device and computer storage medium of communication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23884772

Country of ref document: EP

Kind code of ref document: A1