WO2022011500A1 - Configuration method and apparatus - Google Patents

Abstract

Provided are a configuration method and apparatus. In the technical solution of the present application, a source access network device indicates, to a terminal device, information of a CA band combination and/or a DC band combination supported by at least one candidate cell; after determining a target primary cell and successfully accessing the target primary cell, the terminal device sends, to the target primary cell, information of a cell that can provide CA communication for the terminal device together with the target primary cell, and/or information of a cell that can provide DC communication for the terminal device together with the target primary cell, such that the target primary cell can decide whether to configure CA for the terminal device, which cells should be configured as secondary cells, whether to configure DC for the terminal device, and which cells should be added as primary and secondary cells. By means of the technical solution, CA and/or DC can be quickly configured during a CHO process, and the system throughput can be improved.

Description

Configuration method and device technical field

The present application relates to the field of communications, and more particularly, to configuration methods and apparatus.

Background technique

In the traditional cell handover scheme, the mobility management of the terminal equipment in the connected state is controlled by the access network equipment. The access network device instructs the terminal device to perform cell handover by sending a handover message; after receiving the handover message, the terminal device attempts to handover to the target cell according to the relevant information of the target cell contained in the handover message. Therefore, the successful sending of the handover message is a necessary condition to ensure that the traditional handover can be successfully performed. However, when the channel quality is rapidly attenuated, the terminal equipment moves rapidly, objects are occluded, and the duration of measurement or handover preparation is long, it is likely to cause the handover message to fail to be sent, which in turn causes the handover process to fail, reducing the probability of successful handover. . Therefore, the conditional handover (CHO) mechanism emerges as the times require.

However, through the current CHO mechanism for cell handover, the terminal device can only communicate with one cell or one access network device, which will affect the system throughput and reduce user experience satisfaction.

SUMMARY OF THE INVENTION

The present application provides a configuration method and apparatus, which can realize the configuration of carrier aggregation (CA) and/or dual connectivity (DC) in the CHO process, which helps to improve system throughput.

In a first aspect, the present application provides a configuration method, the method comprising: a terminal device receiving first information from a source access network device, the first information indicating CA bandwidth (band) combination information supported by at least one candidate cell and/or DC band combination information; the terminal device selects a target primary cell from the at least one candidate cell; the terminal device determines at least one candidate secondary cell and/or at least one candidate primary and secondary cell according to the first information cell, wherein the band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the CA band combination supported by the target primary cell, and the band composed of the at least one candidate primary secondary cell and the target primary cell The combination belongs to the DC band combination supported by the target primary cell; the terminal device sends the information of the at least one candidate secondary cell and/or the at least one candidate primary secondary cell to the access network device to which the target primary cell belongs Information.

The band combination formed by at least one candidate secondary cell and the target primary cell belongs to the CA band combination supported by the target primary cell. It can also be described as, at least one candidate secondary cell can form a CA with the target primary cell, or at least one candidate secondary cell can be combined with the target primary cell. The target primary cell together provides CA communication for the terminal device.

The band combination composed of at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell, which can also be described as, at least one candidate primary and secondary cell can form a DC with the target primary cell, or, at least one candidate primary and secondary cell The cell may provide DC communication for the terminal device together with the target primary cell.

In the above technical solution, the source access network device indicates the CA band combination information and/or DC band combination information supported by at least one candidate cell to the terminal device. After the terminal device determines the target primary cell and successfully accesses the target primary cell , the information of the cell that can provide the terminal equipment with CA communication together with the target primary cell and/or the information of the cell that can provide the terminal equipment with DC communication together with the target primary cell is sent to the target primary cell, and then, the target primary cell can be Decide whether to configure CA for terminal equipment, configure which cells as secondary cells, whether to configure DC for terminal equipment, and which cell to add as primary and secondary cells. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, and the system throughput can be improved.

In addition, compared to configuring the CA and/or DC after the CHO switching process is completed, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

With reference to the first aspect, in a possible implementation manner, the at least one candidate secondary cell includes at least one first candidate secondary cell and/or at least one second candidate secondary cell, and the at least one first candidate secondary cell is A cell that the terminal device is capable of detecting, the at least one second candidate secondary cell belongs to the at least one candidate cell; and/or, the at least one candidate primary and secondary cell includes at least one first candidate primary and secondary cell and /or at least one second candidate primary and secondary cell, the at least one first candidate primary and secondary cell is a cell that the terminal device is capable of detecting, and the at least one second candidate primary and secondary cell belongs to the at least one candidate cell .

The cell that the terminal device is capable of detecting can also be described as the cell that the terminal device can detect.

Optionally, the second candidate secondary cell satisfies the CHO execution condition.

Optionally, the second candidate primary and secondary cell satisfies the CHO execution condition.

In the above technical solution, the terminal device can determine at least one candidate secondary cell and/or at least one candidate primary secondary cell from the cells and/or at least one candidate cell that the terminal device is capable of detecting, which helps to successfully determine a suitable secondary cell. candidate secondary cells and candidate primary and secondary cells.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal device receiving second information from the source access network device, the second information indicating two or more Whether the candidate cells belong to the same access network device; the terminal device determining at least one candidate secondary cell and/or at least one candidate primary secondary cell according to the first information, including: the terminal device according to the first information information and the second information to determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell, wherein the band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the The CA band combination supported by the target primary cell, the band combination formed by the at least one candidate primary secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell, and the at least one second candidate secondary cell and the target primary cell are combined. The target primary cell belongs to the same access network device, and the at least one second candidate primary and secondary cell and the target primary cell belong to different access network devices.

Optionally, the second information may further indicate whether two or more candidate cells in the at least one candidate cell belong to different access network devices.

Generally, cells capable of providing CA communication for terminal devices belong to the same access network device, and cells capable of providing DC communication for terminal devices belong to different access network devices. In the above technical solution, the source access network device can indicate to the terminal device whether each candidate cell belongs to the same access network device, which helps to determine suitable candidate secondary cells and candidate primary and secondary cells.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal device receiving third information from the source access network device, where the third information indicates a first signal quality threshold value and/or a second signal quality threshold; the terminal device determining at least one candidate secondary cell and/or at least one candidate primary secondary cell according to the first information, including: the terminal device according to the first information and the third information, determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell, wherein the band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the target The CA band combination supported by the primary cell, and the signal quality of the at least one candidate secondary cell is greater than the first signal quality threshold, and the band combination composed of the at least one candidate primary secondary cell and the target primary cell belongs to the The DC band combination supported by the target primary cell, and the signal quality of the at least one candidate primary and secondary cell is greater than the second signal quality threshold.

In the above technical solution, the terminal equipment considers the signal quality of the cell when determining at least one candidate secondary cell and/or at least one candidate primary secondary cell. A cell with better signal quality is used as a candidate secondary cell, and a cell with better signal quality that can provide DC communication for terminal equipment together with the target primary cell is selected as a candidate primary and secondary cell, which helps to improve the reliability of subsequent data transmission.

With reference to the first aspect, in a possible implementation manner, the method further includes: the terminal device receiving second information and third information from the source access network device, the second information indicating two or Whether the two or more candidate cells belong to the same access network device, the third information indicates the first signal quality threshold value and/or the second signal quality threshold value; the terminal device according to the first signal quality threshold value information, and determining at least one candidate secondary cell and/or at least one candidate primary secondary cell, including: the terminal device determining the at least one candidate secondary cell and/or the at least one candidate secondary cell according to the first information, the second information and the third information /or the at least one candidate primary and secondary cell, wherein the band combination formed by the at least one candidate secondary cell and the target primary cell belongs to the CA band combination supported by the target primary cell, and the at least one candidate secondary cell The signal quality is greater than the first signal quality threshold, and the at least one candidate secondary cell and the target primary cell belong to the same access network device; the at least one candidate primary secondary cell and the target primary cell are composed of The band combination belonging to the DC band combination supported by the target primary cell, and the signal quality of the at least one candidate primary and secondary cell is greater than the second signal quality threshold, and the at least one candidate primary and secondary cell and the The target primary cells belong to different access network devices.

Optionally, the second information may further indicate whether two or more candidate cells in the at least one candidate cell belong to different access network devices.

In the above technical solution, when determining at least one candidate secondary cell and/or at least one candidate primary and secondary cell, the terminal equipment considers the signal quality of the cell and the co-site situation of the cell, which helps to successfully determine the appropriate candidate secondary cell and/or Candidate primary and secondary cells, and improve the reliability of subsequent data transmission.

With reference to the first aspect, in a possible implementation manner, the method further includes: receiving, by the terminal device, information of at least one secondary cell corresponding to the target primary cell sent by a target access network device and/or the Information about the primary and secondary cells corresponding to the target primary cell, where the target access network device is the access network device to which the target primary cell belongs.

With reference to the first aspect, in a possible implementation manner, the method further includes: receiving, by the terminal device, fourth information from the source access network device, where the fourth information indicates the location of the at least one candidate cell. cell information and CHO execution condition information of the at least one candidate cell; selecting, by the terminal device, a target primary cell from the at least one candidate cell includes: the terminal device selecting the target primary cell from the at least one candidate cell according to the fourth information The target primary cell is selected from the candidate cells, and the target primary cell is a cell that satisfies the CHO execution condition.

With reference to the first aspect, in a possible implementation manner, the cell information includes at least one of the following items: a cell radio network temporary identifier (cell radio network temporary identifier, C- RNTI), random access channel (RACH) resource information used to access the cell, index information corresponding to the cell, cell global identity (CGI) of the cell, physical cell identifier (physical cell identifier) of the cell , PCI), the frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control (MAC) layer-by-layer configuration parameters corresponding to the cell, and the radio link control (RLC) corresponding to the cell ) layer configuration parameters, the packet data convergence protocol (PDCP) layer configuration parameters corresponding to the cell, the service data adaptation protocol (SDAP) layer configuration parameters corresponding to the cell, and the radio resources corresponding to the cell Control (radio resource control, RRC) layer configuration parameters.

Optionally, the frequency information corresponding to the cell may include any one of the following items: frequency point, bandwidth, and subcarrier spacing corresponding to the cell.

With reference to the first aspect, in a possible implementation manner, the CHO execution condition information includes an event type and a threshold value corresponding to the event type.

In a second aspect, the present application provides a configuration method, the method comprising: a source access network device determining first information, where the first information indicates CA band combination information and/or DC band combination information supported by at least one candidate cell , the at least one candidate cell is used by the terminal device to select the target primary cell; the source access network device sends the first information to the terminal device.

In the above technical solution, the source access network device indicates the CA band combination information and/or DC band combination information supported by at least one candidate cell to the terminal device, so that the terminal device determines the target primary cell and successfully accesses the target primary cell. Then, the information of the cell that can provide the terminal device with CA communication together with the target primary cell and/or the information of the cell that can provide the terminal device with DC communication together with the target primary cell can be sent to the target primary cell, and then, the target primary cell is made. The cell can decide whether to configure CA for the terminal equipment, which cells to configure as secondary cells, whether to configure DC for the terminal equipment, and which cell to add as the primary and secondary cells. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, and the system throughput can be improved.

In addition, compared to configuring the CA and/or DC after the CHO switching process is completed, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

With reference to the second aspect, in a possible implementation manner, the CA band combination information is used by the terminal device to determine at least one candidate secondary cell, and the DC band combination information is used by the terminal device to determine at least one candidate primary secondary cell .

With reference to the second aspect, in a possible implementation manner, the method further includes: the source access network device sends second information to the terminal device, where the second information indicates two or more Whether the candidate cells belong to the same access network device.

Optionally, the second information may further indicate whether two or more candidate cells in the at least one candidate cell belong to different access network devices.

Generally, cells capable of providing CA communication for terminal devices belong to the same access network device, and cells capable of providing DC communication for terminal devices belong to different access network devices. In the above technical solution, the source access network device can indicate to the terminal device whether each candidate cell belongs to the same access network device, which helps the terminal device to determine suitable candidate secondary cells and candidate primary and secondary cells.

With reference to the second aspect, in a possible implementation manner, the method further includes: the source access network device sends third information to the terminal device, where the third information indicates a first signal quality threshold value and/or the second signal quality threshold value.

In the above technical solution, the source access network device may indicate to the terminal device the threshold value of the signal quality of the candidate secondary cell and the threshold value of the signal quality of the candidate primary secondary cell, so that the terminal device is determining at least one candidate secondary cell and/or When there is at least one candidate primary and secondary cell, the signal quality of the cell is considered. For example, the terminal device selects a cell that can provide CA communication for the terminal device together with the target primary cell and has better signal quality as a candidate secondary cell. A cell that provides DC communication for terminal equipment and has better signal quality is used as a candidate primary and secondary cell, which helps to improve the reliability of subsequent data transmission.

With reference to the second aspect, in a possible implementation manner, the method further includes: the source access network device sends fourth information to the terminal device, where the fourth information indicates the location of the at least one candidate cell Cell information and CHO execution condition information of the at least one candidate cell.

With reference to the second aspect, in a possible implementation manner, the cell information includes at least one of the following items: a cell radio network temporary identifier C-RNTI allocated by the cell to the terminal device, a C-RNTI used to access the cell Random access channel RACH resource information, index information corresponding to the cell, cell global identifier CGI of the cell, physical cell identifier PCI of the cell, frequency information corresponding to the cell, physical layer configuration parameters corresponding to the cell, and media access control MAC corresponding to the cell Layer configuration parameters, radio link control RLC layer configuration parameters corresponding to cells, packet data convergence protocol PDCP layer configuration parameters corresponding to cells, service data adaptation protocol SDAP layer configuration parameters corresponding to cells, and radio resource control RRC layer corresponding to cells Configuration parameters.

Optionally, the frequency information corresponding to the cell may include any one of the following items: frequency point, bandwidth, and subcarrier spacing corresponding to the cell.

With reference to the second aspect, in a possible implementation manner, the CHO execution condition information includes an event type and a threshold value corresponding to the event type.

In a third aspect, the present application provides a configuration method, the method comprising: a target access network device receiving information of at least one candidate secondary cell and/or information of at least one candidate primary and secondary cell sent by a terminal device, the target access network device receiving The network access device is the access network device to which the target primary cell that satisfies the CHO execution condition belongs; the target access network device, according to the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary and secondary cell, At least one secondary cell corresponding to the target primary cell and/or primary secondary cell corresponding to the target primary cell is determined.

In the above technical solution, the terminal device determines the candidate secondary cells and/or the candidate primary and secondary cells and reports them to the target access network device, so that the target primary cell can decide whether to configure CA for the terminal device, which cells to configure as secondary cells, Whether to configure DC for the terminal device and which cell to add as the primary and secondary cell. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, and the system throughput can be improved.

In addition, compared to configuring the CA and/or DC after the CHO switching process is completed, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

With reference to the third aspect, in a possible implementation manner, the method further includes: the target access network device sending the information of the at least one secondary cell and/or the information of the primary and secondary cells to the terminal device information.

With reference to the third aspect, in a possible implementation manner, when the target access network device determines the primary and secondary cells, the method further includes: the target access network device communicates with the primary and secondary cells. The access network device to which the secondary cell belongs performs the process of adding secondary nodes.

In a fourth aspect, the present application provides a configuration method, the method comprising:

The terminal device receives configuration information of at least one candidate cell from the source access network device, and receives configuration information of at least one third candidate secondary cell, configuration information of at least one third candidate primary secondary cell, and at least one fourth candidate secondary cell. At least one of the configuration information, wherein the at least one candidate cell is used by the terminal device to select a target primary cell, and at least one third candidate secondary cell corresponding to the first candidate cell is composed of the first candidate cell The bandwidth band combination of the first candidate cell belongs to the CA band combination supported by the first candidate cell, and the band combination composed of at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to the The DC band combination supported by the first candidate cell, the band combination formed by at least one of the fourth candidate secondary cell and the fifth candidate primary and secondary cell corresponding to the fifth candidate primary and secondary cell belongs to the fifth candidate primary and secondary cell A supported CA band combination, the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any one of the at least one third candidate primary and secondary cell; the The configuration information includes cell information and condition information, and the condition information indicates the CHO execution condition, the addition condition of the secondary cell or the addition condition of the primary and secondary cells;

selecting, by the terminal device, a target primary cell from the at least one candidate cell according to the configuration information of the at least one candidate cell;

The terminal device determines, according to the configuration information of the at least one third candidate secondary cell, a secondary cell corresponding to the target primary cell from at least one of the third candidate secondary cells corresponding to the target primary cell; and/or , the terminal device determines, according to the configuration information of the at least one third candidate primary and secondary cell, the primary and secondary cell corresponding to the target primary cell from at least one of the third candidate primary and secondary cells corresponding to the target primary cell and/or, the terminal device determines, according to the configuration information of the at least one fourth candidate secondary cell, the secondary cell corresponding to the primary secondary cell from at least one of the fourth candidate secondary cells corresponding to the primary secondary cell community.

The bandwidth band combination formed by at least one of the third candidate secondary cell corresponding to the first candidate cell and the first candidate cell belongs to the CA band combination supported by the first candidate cell, and can also be described as a combination with the first candidate cell. At least one of the third candidate secondary cells corresponding to a cell may form a CA with the first candidate cell, or at least one of the third candidate secondary cells corresponding to the first candidate cell may be combined with the first candidate cell Provides CA communication for end devices.

The bandwidth band combination formed by at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to the DC band combination supported by the first candidate cell, and can also be described as, the same as the first candidate cell. At least one of the third candidate primary and secondary cells corresponding to the candidate cell may form a DC with the first candidate cell, or at least one of the third candidate primary and secondary cells corresponding to the first candidate cell may be combined with the first candidate cell. The candidate cells together provide DC communication for the terminal device.

The band combination formed by at least one of the fourth candidate secondary cell and the fifth candidate primary and secondary cell corresponding to the fifth candidate primary and secondary cell belongs to the CA band combination supported by the fifth candidate primary and secondary cell, and can also be described as , at least one of the fourth candidate secondary cells corresponding to the fifth candidate primary and secondary cells may form a CA with the fifth candidate primary and secondary cells, or at least one of the fourth candidate secondary cells corresponding to the fifth candidate primary and secondary cells The secondary cell may provide CA communication for the terminal device together with the fifth candidate primary secondary cell.

In the above technical solution, the configuration information of at least one candidate cell is indicated to the terminal device by the source access network device, and the configuration information of at least one candidate secondary cell that can provide CA communication for the terminal device together with the cells in the at least one candidate cell is indicated information, configuration information of at least one candidate primary and secondary cell that can provide the terminal device with DC communication with the cell of the at least one candidate cell, and at least one candidate primary and secondary cell that can provide the terminal device with the cell of the at least one At least one of the configuration information of a candidate secondary cell, the terminal device can determine the target primary cell according to the received information, and optionally determine at least one of the following: the target secondary cell corresponding to the target primary cell, the target primary cell The corresponding target primary and secondary cells, and the target secondary cells corresponding to the target primary and secondary cells. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, which helps to improve the system throughput.

In addition, compared to configuring the CA and/or DC after the CHO switching process is completed, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

With reference to the fourth aspect, in a possible implementation manner, the method further includes: the terminal device sending the information of the secondary cell corresponding to the target primary cell and the information of the primary and secondary cells to the target access network device , and at least one of the information of the secondary cells corresponding to the primary and secondary cells, and the target access network device is the access network device to which the target primary cell belongs.

With reference to the fourth aspect, in a possible implementation manner, the cell information includes at least one of the following items: a cell radio network temporary identifier C-RNTI allocated by the cell to the terminal device, a C-RNTI used to access the cell Random access channel RACH resource information, index information corresponding to the cell, cell global identifier CGI of the cell, physical cell identifier PCI of the cell, frequency information corresponding to the cell, physical layer configuration parameters corresponding to the cell, and media access control MAC corresponding to the cell Layer configuration parameters, radio link control RLC layer configuration parameters corresponding to cells, packet data convergence protocol PDCP layer configuration parameters corresponding to cells, service data adaptation protocol SDAP layer configuration parameters corresponding to cells, and radio resource control RRC layer corresponding to cells Configuration parameters.

Optionally, the frequency information corresponding to the cell may include any one of the following items: frequency point, bandwidth, and subcarrier spacing corresponding to the cell.

With reference to the fourth aspect, in a possible implementation manner, the condition information includes an event type and a threshold value corresponding to the event type.

In a fifth aspect, the present application provides a configuration method, the method comprising:

The source access network device receives cell information of at least one candidate cell, and receives cell information of at least one third candidate secondary cell, cell information of at least one third candidate primary secondary cell, and cell information of at least one fourth candidate secondary cell At least one of the candidate cells, wherein the at least one candidate cell is used by the terminal equipment to select the target primary cell, and the bandwidth band combination composed of at least one of the third candidate secondary cell corresponding to the first candidate cell and the first candidate cell belongs to The CA band combination supported by the first candidate cell, the band combination formed by at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to the first candidate cell support DC band combination, the band combination formed by at least one of the fourth candidate secondary cell corresponding to the fifth candidate primary and secondary cell and the fifth candidate primary and secondary cell belongs to the CA band combination supported by the fifth candidate primary and secondary cell , the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any one of the at least one third candidate primary and secondary cell;

The source access network device sends the configuration information of the at least one candidate cell to the terminal device, and sends the configuration information of the at least one third candidate secondary cell, the configuration information of the at least one third candidate primary secondary cell, and At least one of the configuration information of the at least one fourth candidate secondary cell, the configuration information includes cell information and condition information, and the condition information indicates a CHO execution condition, an addition condition of a secondary cell, or an addition condition of the primary and secondary cells.

In the above technical solution, the configuration information of at least one candidate cell is indicated to the terminal device by the source access network device, and the configuration information of at least one candidate secondary cell that can provide CA communication for the terminal device together with the cells in the at least one candidate cell is indicated information, configuration information of at least one candidate primary and secondary cell that can provide the terminal device with DC communication with the cell of the at least one candidate cell, and at least one candidate primary and secondary cell that can provide the terminal device with the cell of the at least one At least one of the configuration information of a candidate secondary cell, so that the terminal device can determine the target primary cell according to the received information, and optionally determine at least one of the following: the target secondary cell corresponding to the target primary cell, the target primary cell The target primary and secondary cells corresponding to the cells, and the target secondary cells corresponding to the target primary and secondary cells. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, which helps to improve the system throughput.

In addition, compared to configuring the CA and/or DC after completing the CHO switching process, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

With reference to the fifth aspect, in a possible implementation manner, the cell information includes at least one of the following items: a cell radio network temporary identifier C-RNTI allocated by the cell to the terminal device, a C-RNTI used to access the cell Random access channel RACH resource information, index information corresponding to the cell, cell global identifier CGI of the cell, physical cell identifier PCI of the cell, frequency information corresponding to the cell, physical layer configuration parameters corresponding to the cell, and media access control MAC corresponding to the cell Layer configuration parameters, radio link control RLC layer configuration parameters corresponding to cells, packet data convergence protocol PDCP layer configuration parameters corresponding to cells, service data adaptation protocol SDAP layer configuration parameters corresponding to cells, and radio resource control RRC layer corresponding to cells Configuration parameters.

Optionally, the frequency information corresponding to the cell may include any one of the following items: frequency point, bandwidth, and subcarrier spacing corresponding to the cell.

With reference to the fifth aspect, in a possible implementation manner, the condition information includes an event type and a threshold value corresponding to the event type.

In a sixth aspect, the present application provides a configuration method, the method comprising: receiving, by a target access network device, information of a secondary cell corresponding to a target primary cell, information of a primary and secondary cell corresponding to the target primary cell and sent by a terminal device, and at least one of the information of the secondary cells corresponding to the primary and secondary cells, the target primary cell satisfies the CHO execution condition, and the target access network device is the access network device to which the target primary cell belongs; the target primary cell The access network device performs a secondary node addition process with the access network device to which the primary and secondary cells belong.

In the above technical solution, the secondary cell and/or the primary and secondary cells are determined by the terminal device and reported to the target access network device, so that the target can activate the secondary cell and perform the process of adding secondary nodes according to the information reported by the terminal. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, and the system throughput can be improved.

In addition, compared to configuring the CA and/or DC after the CHO switching process is completed, performing the CA and/or DC configuration while performing the CHO helps to reduce the CA and/or DC configuration delay.

In a seventh aspect, the present application provides a communication device, comprising a module for performing the first aspect or any implementation of the first aspect; or, including a module for performing the fourth aspect or any implementation of the fourth aspect modules in the way.

In a possible implementation manner, the communication device includes a processor, which is connected to a memory and configured to read and execute a software program stored in the memory, so as to implement the first aspect or any one of the first aspects The method described in the implementation manner, or the method described in the fourth aspect or any one of the implementation manners of the fourth aspect is implemented.

In a possible implementation, the communication device further includes a transceiver.

In a possible implementation manner, the communication device is a chip that can be applied to a terminal device.

In a possible implementation manner, the communication apparatus is a terminal device.

In an eighth aspect, the present application provides a communication device, comprising a module for performing the second aspect or any implementation of the second aspect; or, including a module for performing the fifth aspect or any implementation of the fifth aspect modules in the way.

In a possible implementation manner, the communication device includes a processor, which is connected to a memory and configured to read and execute a software program stored in the memory, so as to implement the second aspect or any one of the second aspects Implement the method described in the implementation manner, or implement the method described in the fifth aspect or any implementation manner of the fifth aspect.

In a possible implementation, the communication device further includes a transceiver.

In a possible implementation manner, the communication apparatus is a chip that can be applied to an access network device.

In a possible implementation manner, the communication apparatus is an access network device.

In a ninth aspect, the present application provides a communication device, comprising a module for performing the third aspect or any implementation manner of the third aspect; or, including a module for performing the sixth aspect or any implementation of the sixth aspect modules in the way.

In a possible implementation manner, the communication device includes a processor, which is connected to a memory and configured to read and execute a software program stored in the memory, so as to implement the third aspect or any one of the third aspects The method described in the implementation manner, or the method described in any implementation manner of the sixth aspect or the sixth aspect is implemented.

In a possible implementation, the communication device further includes a transceiver.

In a possible implementation manner, the communication apparatus is a chip that can be applied to an access network device.

In a possible implementation manner, the communication apparatus is an access network device.

In a tenth aspect, the present application provides a computer program product, the computer program product comprising computer instructions, when the computer instructions are executed, the method in the foregoing first aspect or any possible implementation manner of the first aspect is executed, or cause the method in the foregoing second aspect or any possible implementation of the second aspect to be performed, or cause the foregoing third aspect or any possible implementation of the third aspect to be performed, or cause the foregoing fourth aspect aspect or the method in any possible implementation of the fourth aspect is performed, or causes the method in any possible implementation of the fifth aspect or the fifth aspect to be performed, or causes the sixth aspect or the sixth aspect to be performed. The method in any possible implementation is executed.

In an eleventh aspect, the present application provides a computer-readable storage medium, the storage medium stores computer instructions, when the computer instructions are executed, the aforementioned first aspect or any possible implementation manner of the first aspect is The method of the preceding second aspect or any possible implementation of the second aspect is performed, or the method of the preceding third aspect or any possible implementation of the third aspect is performed, or causing the method of the foregoing fourth aspect or any possible implementation of the fourth aspect to be performed, such that the method of the foregoing fifth aspect or any possible implementation of the fifth aspect is performed, such that the foregoing sixth aspect or the sixth aspect is performed The methods of any possible implementation of an aspect are performed.

According to a twelfth aspect, the present application provides a communication system, where the communication system includes the communication device of the seventh aspect, the communication device of the eighth aspect, and the communication device of the ninth aspect.

Description of drawings

FIG. 1 is a schematic structural diagram of a dual-connection communication system to which the technical solutions of the present application can be applied.

FIG. 2 is another schematic structural diagram of a dual-connection communication system to which the technical solution of the present application can be applied.

FIG. 3 is another schematic structural diagram of a dual-connection communication system to which the technical solutions of the present application can be applied.

FIG. 4 is a schematic diagram of a specific architecture of the EN-DC communication system.

FIG. 5 is a schematic flowchart of the SN adding process.

FIG. 6 is a schematic flowchart of a CA configuration method provided by an embodiment of the present application.

FIG. 7 is a schematic flowchart of a DC configuration method provided by an embodiment of the present application.

FIG. 8 is a schematic flowchart of a CA and/or DC configuration method provided by another embodiment of the present application.

FIG. 9 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application.

FIG. 10 is another schematic structural diagram of a communication apparatus provided by an embodiment of the present application.

detailed description

In order to facilitate understanding of the embodiments of the present application, the following points are described.

1. In this embodiment of the present application, "indication" may include direct indication and indirect indication, and may also include explicit indication and implicit indication. The information indicated by a certain piece of information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated. For example, but not limited to, the information to be indicated can be directly indicated, such as the information to be indicated itself or the information to be indicated. The index of the information to be indicated, etc. The information to be indicated may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be indicated. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the information to be indicated can also be implemented by means of a pre-agreed agreement (for example, a protocol definition) whether there is a certain information element, so as to reduce the indication overhead to a certain extent.

2. In the embodiments shown below, the first, second, third, fourth, and various numeral numbers are only for the convenience of description, and are not used to limit the scope of the embodiments of the present application. For example, different configuration information or different messages can be distinguished.

3. In the embodiments shown below, "pre-acquisition" may include signaling by the network device or pre-definition, for example, protocol definition. Wherein, "pre-definition" can be realized by pre-saving corresponding codes, forms or other methods that can be used to indicate relevant information in the equipment (for example, including terminal equipment and access network equipment). Not limited.

4. The "protocol" involved in the embodiments of this application may refer to a standard protocol in the communication field, for example, it may include a long term evolution (long term evolution, LTE) protocol, a new radio (new radio, NR) protocol and applications in future communications. The relevant protocols in the system are not limited in this application.

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to a dual-connection communication system. Dual connectivity can also be called multi-radio dual connectivity (MR-DC), which supports two access network devices to provide data transmission services for one terminal device at the same time, so as to improve wireless resource utilization and reduce system switching. latency, improving user and system performance. The two access network devices include a primary access network device (eg, primary base station (eg, master gNB, MgNB)) and a secondary access network device (eg, secondary base station (eg, secondary gNB, SgNB)). Among them, the main access network equipment is the control plane anchor point, that is, the terminal equipment establishes an RRC connection with the main access network equipment, and establishes a control plane connection between the main access network equipment and the core network, and the main access network equipment and the terminal equipment. RRC messages are transmitted between the two devices; in the subsequent enhancement technology, some RRC messages (for example, measurement configuration information or measurement reports, etc.) may also be sent between the secondary access network device and the terminal device. The primary access network device may also be called a master node (MN), a master node or an anchor (anchor), etc., and the secondary access network device may also be called a secondary node (SN), a secondary node or a slave node. Nodes and the like are collectively referred to as primary access network equipment and secondary access network equipment in the examples of this application. It should be noted that the primary base station and the secondary base station may be 4G access network equipment connected to the fourth generation (the 4th generation, 4G) core network equipment, or connected to the fifth generation (the 5th generation, 5G) core network equipment. The 4G access network equipment, or the 5G access network equipment connected to the 5G core network equipment, or the 5G access network equipment connected to the 4G core network equipment, is not limited in this application.

The above two wireless access systems may be the same or different. For example, both the first radio access system and the second radio access system use the 4G mobile communication technology, or both use the 5G mobile communication technology. For another example, the first wireless access system adopts 4G mobile communication technology, and the second wireless access system adopts 5G mobile communication technology; or, the first wireless access system adopts 5G mobile communication technology, and the second wireless access system adopts 5G mobile communication technology. 4G mobile communication technology is adopted. This embodiment of the present application does not limit this.

The wireless access system in the above-mentioned dual-connection communication system can include but is not limited to the following systems: LTE system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), Universal Mobile Communication system (universal mobile telecommunication system, UMTS), 5G system or NR or other evolved communication systems, etc. For example, an LTE system and an NR system can be deployed simultaneously in a dual-connectivity communication system.

The terminal equipment in the embodiments of the present application may also be referred to as: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user equipment, etc. The terminal device may be a device that provides voice/data connectivity to the user, such as a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, cellular phone, cordless phone, session initiation protocol , SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, or other processing devices connected to wireless modems, 5G A terminal device in a network or a terminal device in a public land mobile network (public land mobile network, PLMN) that evolves in the future, etc., are not limited in this embodiment of the present application. The above-mentioned wearable device can also be called wearable smart device, which is a general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the terminal device may also be a terminal device in an Internet of Things (IoT) system. IoT is an important part of the future development of information technology. connection, so as to realize the intelligent network of human-machine interconnection and the interconnection of things. The terminal device of the present application may also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units. An on-board component, on-board chip or on-board unit may implement the method of the present application. Therefore, the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X), long term evolution-vehicle (LTE-V), vehicle-to-vehicle (V2X) , V2V) and so on.

The access network device in the embodiment of the present application may also be referred to as a wireless access network device, which is a device used to communicate with terminal devices, and may be a transmission reception point (TRP), or a LTE system. Evolved base station (evolved NodeB, eNB or eNodeB), can also be a home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU), and can also be a cloud radio access network A wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, an in-vehicle device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network etc., may be an access point (access point, AP) in a WLAN, or may be a gNB in a new radio system (new radio, NR) system, which is not limited in this embodiment of the present application.

In a network structure, an access network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node. Among them, the CU implements some functions of the access network equipment, and the DU implements some functions of the access network equipment. For example, the CU can be responsible for processing non-real-time protocols and services, and realizes the functions of the RRC and SDAP layers and the functions of the PDCP layer, and the DU is responsible for processing The physical layer protocol and real-time services implement the functions of the RLC layer, the MAC layer and the physical (PHY) layer. Alternatively, the access network device may be other devices with wireless transceiver functions. In this embodiment of the present application, an access network device provides services for a cell, and a terminal device communicates with the cell through transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the access network device, and the cell may belong to a macro base A base station (for example, a macro eNB or a macro gNB, etc.) may also belong to a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell, and a pico cell. cell), femto cell, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-speed data transmission services.

In order to facilitate understanding of the technical solutions of the present application, a communication system applicable to the embodiments of the present application is first described in detail with reference to FIG. 1 to FIG. 4 .

1 to 3 are schematic diagrams of the architecture of a dual-connection communication system to which the technical solutions of the present application can be applied.

Figure 1 shows the EN-DC (E-UTRA-NR dual connectivity) system architecture. EN-DC is also called Option3 series (Option3 series). As shown in FIG. 1, LTE access network equipment (eg, eNB) is used as primary access network equipment, NR access network equipment (eg, en-gNB) is used as secondary access network equipment for DC, and primary access network equipment and secondary access network equipment The access network equipment is connected to the fourth generation (4th generation, 4G) core network (evolved packet core, EPC), providing air interface transmission resources for data between the terminal equipment and the EPC, among which the main access network equipment and the EPC There is a control plane connection, and a data plane connection may exist between the primary access network device and the EPC; and a data plane connection may exist between the secondary access network device and the EPC.

Figure 2 shows the NE-DC (NR-E-UTRA Dual Connectivity) system architecture. NE-DC is also known as Option4 series (Option4 series). As shown in Figure 2, NR access network equipment (eg, gNB) is used as primary access network equipment, LTE access network equipment (eg, ng-eNB) is used as secondary access network equipment, and primary access network equipment and secondary access network equipment All network devices are connected to the 5G core network (5G core, 5GC) to provide air interface transmission resources for data between terminal devices and 5GC.

Figure 3 shows the NGEN-DC (NG-RAN E-UTRA-NR Dual Connectivity) system architecture. NGEN-DC is also known as Option7 series (Option7series). As shown in FIG. 3 , an LTE access network device (eg, ng-eNB) serves as a primary access network device, and an NR access network device (eg, gNB) performs DC as a secondary access network device. Different from EN-DC, both the primary access network device and the secondary access network device are connected to the 5GC to provide air interface transmission resources for data between the terminal device and the 5GC.

It should be understood that FIG. 1 to FIG. 3 are only examples, and the technical solutions of the embodiments of the present application may also be applied to other dual-connection communication systems. For example, in addition to the DC of LTE and NR as shown in Figures 1 to 3, 5G also supports the DC of NR and NR, that is, the primary access network device and the secondary access network device are both NR access network devices.

FIG. 4 is a schematic diagram of a specific architecture of the EN-DC communication system. As shown in FIG. 4 , the access network equipment includes an LTE base station eNB and an NR base station en-gNB, and the eNB and the en-gNB jointly provide air interface transmission resources for data between the terminal equipment and the EPC. As the main access network equipment, the eNB provides the termination point of the E-UTRAN user plane and control plane protocol stack. The en-gNB acts as a secondary access network device and provides the termination point for the NR user plane and control plane protocols. eNB and eNB, eNB and en-gNB, and en-gNB and en-gNB are connected through X2 interface, wherein en-gNB and en-gNB are connected through X2-U interface; eNB and en-gNB Connect with the EPC through the S1 interface, wherein the en-gNB connects with the EPC through the S1-U interface.

It should be understood that other dual-connectivity communication systems are similar to the EN-DC communication system shown in FIG. 4 , except that the access network equipment, core network equipment, and interfaces between the equipment are different, which will not be repeated here. For example, in NE-DC, the core network equipment is changed from 4G core network equipment to 5G core network equipment (for example, access and mobility management function (AMF) entities, session management function (session management function) , SMF) entity and user plane function (user plane function, UPF) entity, etc.), the interface has changed from S1/X2 to NG/Xn.

The terms involved in this application are introduced below.

1. Primary cell, secondary cell and primary and secondary cell

In a dual-connectivity communication system, a terminal device can accept services provided by two access network devices, and when the terminal device is under one access network device, it can simultaneously accept services from multiple cells of the access network device. The serving cell group provided by the primary access network equipment for the terminal equipment may be called a master cell group (MCG), and the serving cell group provided by the secondary access network equipment for the terminal equipment may be called a secondary cell group (secondary cell group). , SCG). The primary cell group and the secondary cell group respectively include at least one cell. There is one primary cell (primary cell, PCell) in the primary cell group, and one primary secondary cell (primary second cell, PSCell) in the secondary cell group. The primary cell and the primary and secondary cells may be collectively referred to as a special cell (special cell, SpCell). When there are multiple cells in the MCG or SCG, the cells other than the special cell may be referred to as a secondary cell (secondary cell, SCell). The secondary cells in each cell group perform carrier aggregation with the primary cell or the primary and secondary cells to jointly provide transmission resources for terminal equipment.

PCell is deployed at the main frequency point (or, in other words, works on the main carrier), and is the cell corresponding to the terminal equipment initiating the initial connection establishment process or the connection re-establishment process, that is, the terminal equipment initiates the initial connection establishment process or initiates the connection re-establishment process in a certain cell. process, the cell is called the primary cell. During the handover process, the cell to be handed over may be referred to as the target cell or the target primary cell.

The SCell works on the secondary carrier, and once the RRC connection is established, the secondary cell may be configured to provide additional radio resources.

PSCell is a terminal device that performs random access or initial physical uplink shared channel (PUSCH) transmission in the SCG (for example, in the process of changing the secondary access network device, the terminal device can skip the random access process and directly send data transmission), or a cell in the SCG belonging to the secondary access network device that initiates random access during the synchronization reconfiguration process.

2. Carrier aggregation

Carrier aggregation is a technology in which multiple cells (carriers) are configured for a single terminal device to jointly transmit data. Through carrier aggregation, terminal equipment can use multiple cells (carriers) for uplink and downlink communication at the same time, thereby supporting high-speed data transmission. Among the plurality of cells, one of them is a PCell, and the others are SCells.

3. Serving cell and candidate cell

Serving cell: a terminal device in the RRC connected state (RRC_CONNECTED), if carrier aggregation or dual connectivity is not configured, there is only one serving cell, namely PCell. If carrier aggregation or dual connectivity is configured, the serving cell of the terminal device is a cell set composed of PCell, PSCell and all SCells.

Candidate cell: With the movement of the terminal equipment, the signal quality of the channel of the serving cell of the terminal equipment gradually weakens, while the signal quality of some neighboring cells of the serving cell gradually increases. In order to ensure the communication quality of the terminal equipment, connect The network access device can configure at least one neighboring cell as a candidate cell to the terminal device, and the terminal device can determine the target cell to be handed over from the at least one candidate cell.

4. SN addition

SN addition is a process initiated by the primary access network device to add secondary access network devices to the terminal device. Through the SN adding process, two access network devices can be supported to provide data transmission services for one terminal device at the same time, that is, through the SN adding process, DC configuration can be performed for the terminal device. The SN adding process establishes the context of the terminal device in the SN for the terminal device, and provides the terminal device with the resources of the SN. The resources of the above-mentioned SN may include at least one of the following items: SCG radio bearer, PDCP configuration, RLC configuration, MAC configuration, and the like. Wherein, the SCG radio bearer may include SN terminated bearer or SCG bearer, etc.

FIG. 5 is a schematic flowchart of the SN adding process. It should be noted that FIG. 5 only takes the EN-DC architecture as an example. In the EN-DC architecture, the secondary access network device is an SgNB. In order not to be distinguished by a specific DC architecture, they are collectively referred to as secondary access network devices.

In 501, the primary access network device sends an SN addition request message to the secondary access network device, and accordingly, the secondary access network device receives the SN addition request message from the primary access network device. The SN addition request message is used to request the secondary access network device to allocate corresponding radio resources for the dual connection of the terminal device.

The SN addition request message may include a cell measurement result corresponding to the secondary access network device, which is used for the secondary access network device to configure the SCG (or configure the SCG cell(s)). The SN addition request message may also include necessary security information (eg, security keys, etc.) for the secondary access network device. The SN addition request message may be S-NODE ADDITION REQUEST, SN Addition Request or SgNB Addition Request, etc.

In 502, if the secondary access network device can accept the request of the primary access network device, the secondary access network device replies to the primary access network device with an SN add request confirmation message, and accordingly, the primary access network device receives the secondary access network device The SN addition request confirmation message sent by the network device. The SN addition request confirmation message is used to confirm the SN addition request to the primary access network device.

The SN addition request confirmation message includes the new SCG radio resource configuration replied to the primary access network device, so that the primary access network device sends it to the terminal device. The SN Addition Request Acknowledge message may be S-NODE ADDITION REQUEST ACKNOWLEDGE, SN Addition Request Acknowledge, or SgNB Addition Request Acknowledge, etc.

The secondary access network device may also reject the request of the primary access network device, and the secondary access network device replies to the primary access network device with a SN Addition Request Reject message.

In 503, after receiving the SN addition request confirmation message sent by the secondary access network device, the primary access network device sends an RRC reconfiguration message to the terminal device, and accordingly, the terminal device receives the RRC reconfiguration message from the primary access network device Configuration message, the RRC reconfiguration message is used to configure a new SCG configuration for the terminal device. That is to say, the primary access network device sends the SCG radio resource configuration received in 502 to the terminal device without modification.

The RRC reconfiguration message may be an RRCConnectionReconfiguration message or an RRCReconfiguration message or the like.

In 504, if the terminal device can comply with the configuration in the RRC reconfiguration message, the terminal device applies the received SCG radio resource configuration, and replies an RRC reconfiguration complete message to the primary access network device. The access network device receives the RRC reconfiguration complete message sent by the terminal device. The RRC reconfiguration complete message may carry an RRC response (RRC Response) message returned to the secondary access network device.

If the terminal device cannot follow all or part of the configuration of the RRC reconfiguration message, the terminal device may perform a reconfiguration failure procedure, for example, the terminal device initiates an RRC re-establishment procedure.

In 505, the primary access network device notifies the secondary access network device that the terminal device has completed the SN reconfiguration process by sending an SN reconfiguration complete message (for example, SgNB Reconfiguration Complete) to the secondary access network device, and reconfigures the RRC The RRC response message possibly carried in the completion message is forwarded to the secondary access network device.

In 506, the terminal device performs a synchronization process with the secondary access network device (or PSCell).

For example, the terminal device performs a random access procedure with the secondary access network device (or PSCell). After the terminal device completes the random access process, it can send an RRC reconfiguration complete message to the secondary access network device.

It should be noted that, this embodiment of the present application does not limit the execution order of step 504 and step 506 .

5. Condition switching

In the traditional cell handover scheme, the access network device sends a handover message to indicate the relevant information of the target cell to which the terminal device needs to be handed over, while in conditional handover (CHO), the access network device can configure one of the terminal devices. Or the CHO configuration information of the multiple candidate cells is sent to the terminal device, and the terminal device selects the target cell to be handed over from the one or more candidate cells. For a dual connectivity communication system, the target cell here may be referred to as a target primary cell.

In CHO, the source access network device may send the CHO configuration information corresponding to one or more candidate cells to the terminal device through an RRC message. For example, the source access network device sends an RRC message to the terminal device when the signal quality of the source link is good. The RRC message may include CHO configuration information corresponding to each candidate cell in the at least one candidate cell. The RRC message may be a newly defined message (for example, CondRRCReconfiguration or other naming/expression forms, which is not limited) or reuse an existing RRC message. It should be noted that when the source access network device configures multiple candidate cells for the terminal device, the source access network device may send the CHO configuration information corresponding to the multiple candidate cells to the terminal device through one or more RRC messages.

Specifically, the CHO configuration information may include: cell information of the candidate cell and condition information for CHO.

Wherein, the cell information of the candidate cell may include at least one of the following:

The candidate cell is the cell radio network temporary identifier (C-RNTI) allocated by the terminal equipment, the random access channel (RACH) resource information used to access the candidate cell, and the index information corresponding to the candidate cell (For example, the measurement identifier measID corresponding to the cell and/or the CHO-ConfigId corresponding to the cell), the cell global identity (CGI) of the candidate cell, the physical cell identifier (PCI) of the candidate cell, Frequency information corresponding to the candidate cell, physical layer configuration parameters corresponding to the candidate cell, MAC layer configuration parameters corresponding to the candidate cell, RLC layer configuration parameters corresponding to the candidate cell, PDCP layer configuration parameters corresponding to the candidate cell, SDAP layer configuration corresponding to the candidate cell parameters, and RRC layer configuration parameters corresponding to the candidate cell, etc.

The condition information may be CHO execution condition information, which may include: CHO execution event type and corresponding threshold value.

The CHO execution event type may include event A3, event A4, event A5, event B1, event B2, or other execution event types. A candidate cell may be configured with one or more CHO execution conditions. For example, a candidate cell may be configured with one execution event type, but with at least one threshold value and/or at most two different trigger qualities (trigger quantity), The trigger quality may include at least one of reference signal received power (RSRP), signal to interference plus noise ratio (SINR), and reference signal received quality (RSRQ). One. Alternatively, a candidate cell may be configured with at most two different execution event types, and threshold values corresponding to each execution event type. The CHO execution event types corresponding to different candidate cells and/or the threshold values corresponding to the execution event types may be the same or different, which are not limited.

After receiving the above RRC message, the terminal device determines whether the candidate cell satisfies the CHO execution condition according to the RRC message, and takes a candidate cell that satisfies the CHO execution condition as the target cell or the target primary cell. Specifically, the terminal device may judge whether the CHO execution condition is satisfied according to the CHO configuration information.

As an example, corresponding to candidate cell A, the configured CHO trigger event type is A3 event, and the configured corresponding threshold value is the first threshold value (it should be noted that, corresponding to different trigger qualities, the first threshold value may be the same or different ). When the terminal device determines that the cell signal quality of the candidate cell A is higher than that of the serving cell by the first threshold, the candidate cell A may be considered to satisfy the CHO execution condition, and the candidate cell A may be determined as the target cell. The signal quality may include at least one of RSRP, RSRQ and SINR, for example, the signal quality includes RSRP and RSRQ, or the signal quality includes RSRP and SINR, or others, which are not limited.

For example, for candidate cell A, configure event A3, and configure two trigger qualities, for example, RSRP and RSRQ, the configured first threshold corresponding to RSRP is E, and the configured first threshold corresponding to RSRQ is F, then when the candidate cell is When the RSRP of A is higher than the RSRP of the serving cell by E, and the RSRQ of the candidate cell A is higher than the RSRQ of the serving cell by F, the terminal device can consider that the candidate cell A satisfies the CHO execution condition, and the candidate cell A can be determined as the target cell .

As another example, corresponding to candidate cell B, the configured CHO trigger event type is A5 event, and the configured corresponding thresholds are the second threshold and the third threshold, then when the cell signal quality of candidate cell B is higher than the second threshold When the cell signal quality of the serving cell is lower than the third threshold, it can be considered that the candidate cell B satisfies the CHO triggering condition, and the candidate cell B can be determined as the target cell.

For example, for candidate cell B, an event A5 is configured, and two trigger qualities are configured, for example, RSRP and RSRQ, the configured second threshold corresponding to RSRP is W, the third threshold is S, and the configured second threshold corresponding to RSRQ is T, the third threshold is Y, then when the RSRP of the candidate cell B is higher than W, the RSRP of the serving cell is lower than S, and the RSRQ of the candidate cell B is higher than T, and the RSRQ of the serving cell is lower than Y, the terminal device can consider The candidate cell B satisfies the CHO execution condition, and the candidate cell B can be determined as the target cell or the target primary cell.

After the terminal device determines the target cell or the target primary cell, it may attempt to access the target cell or the target primary cell, for example, the terminal device performs a random access procedure with the target cell or the target primary cell. When the terminal device successfully accesses the target cell or the target primary cell, it can be considered that the CHO procedure is successful.

Through the above CHO process, the reliability and robustness of cell handover can be improved to a certain extent, but after the terminal device successfully completes the above CHO process, the terminal device can only communicate with one cell (for example, the terminal device determined by the terminal device that meets the CHO execution conditions) The target cell or the target primary cell) or an access network device (for example, the access network device to which the target cell belongs) to communicate, the CA mechanism and the dual-connection communication system cannot be adapted, which will affect the system throughput and reduce the user experience. satisfaction.

In view of the above problems, the present application provides a configuration method and device, which can quickly configure the CA and/or DC in the CHO process.

FIG. 6 is a schematic flowchart of a CA configuration method provided by an embodiment of the present application. The method shown in FIG. 6 includes at least part of the following.

The method shown in FIG. 6 may be performed by the terminal device and the access network device, or may be performed by a module or unit (eg, a circuit, a chip or a system on a chip (SOC), etc. in the terminal device and the access network device, etc. )implement. In FIG. 6 , the CA configuration method according to the embodiment of the present application is described by taking the terminal device and the access network device as the execution subjects as an example.

In step 601, the source access network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information from the source access network device. Wherein, the first information indicates CA bandwidth (band) combination information supported by at least one candidate cell.

In this embodiment of the present application, at least one candidate cell is used by the terminal device to select the target primary cell from it. That is, the terminal device can determine the target primary cell to be handed over to from at least one candidate cell.

In some embodiments, the first information may indicate CA band combination information supported by some or all of the candidate cells in the at least one candidate cell.

For example, at least one candidate cell configured by the access network device includes cell 1, cell 2, and cell 3, where the frequency point of cell 1 is f1, the CA band combinations supported by cell 1 are f1+f2 and f1+f3, and cell 2 The frequency of cell 2 is f5, the CA band combination supported by cell 2 is f5+f1, the frequency point of cell 3 is f2, and the CA band combination supported by cell 3 is f1+f2. In this case, the first information can indicate cell 1 The supported CA band combinations are f1+f2 and f1+f3, the CA band combination supported by cell 2 is f5+f1, and the CA band combination supported by cell 3 is f1+f2.

For another example, the at least one candidate cell configured by the access network device includes cell 1, cell 2, and cell 3, wherein the bandwidth of cell 1 is band1, the CA band combinations supported by cell 1 are band1+band2 and band1+band3, and cell 3 The bandwidth is band2, the CA band combination supported by cell 3 is band1+band2, in this case, the first information can indicate that the CA band combination supported by cell 1 is band1+band2 and band1+band3, and the CA band combination supported by cell 3 is band1+band2.

Optionally, the first information may be sent through an RRC message.

For example, the first information may be carried in an RRC reconfiguration message.

Optionally, the first information may be sent through one or more RRC messages.

For example, the source access network device can send multiple RRC messages, and each RRC message can carry the CA band combination information supported by a candidate cell.

For another example, the source access network device may send an RRC message, where the RRC message may carry CA band combination information supported by some or all of the candidate cells in the at least one candidate cell.

Optionally, after the terminal device receives the first information, the terminal device may send an RRC reconfiguration complete message to the source access network device, and correspondingly, the source network device receives the RRC reconfiguration complete message sent by the terminal device.

In step 602, the terminal device selects/determines a target primary cell from at least one candidate cell.

In some embodiments, the terminal device may select/determine the target primary cell according to the cell information of the at least one candidate cell from the source access network device and the CHO execution condition information of the at least one candidate cell. Specifically, step 604 may be performed, that is, the source access network device may send fourth information to the terminal device, and correspondingly, the terminal device receives fourth information from the source access network device, where the fourth information indicates the above at least one candidate The cell information of the cell and the CHO execution condition information of the above at least one candidate cell; the terminal device can select the target primary cell from the at least one candidate cell according to the fourth information. This will not be repeated here.

Optionally, the fourth information may be sent through an RRC message. For example, the fourth information may be carried in the RRC reconfiguration message.

Optionally, the fourth information may be sent through one or more RRC messages. The first information and the fourth information may be sent through the same message or different messages, which are not limited.

It should be noted that, the embodiment of the present application does not specifically limit the manner in which the source access network device obtains the fourth information. As an example, the source access network device may obtain the cell information of the at least one candidate cell according to the cell information received from the at least one candidate access network device, for example, the source access network device may obtain the above cell information through a handover confirmation message; further, the source access network device may The network access device can configure CHO execution condition information for at least one candidate cell respectively; after that, the source access network device can send the received cell information and CHO execution condition information of the at least one candidate cell to the terminal device through an RRC message, that is, to the terminal device. The terminal device sends fourth information. For the description of the cell information and the CHO execution condition information, reference may be made to the relevant description of the conditional handover above, which will not be repeated here.

In step 603, the terminal device determines at least one candidate secondary cell according to the first information.

In some embodiments, the terminal device determines at least one candidate secondary cell according to the determined target primary cell and the CA band combination supported by the target primary cell, wherein the band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the target primary cell The CA band combination supported by the cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, the terminal device selects cell 1 from the at least one candidate cell as the target primary cell, and the frequency point of cell 1 is f1, and the CA band combination supported by cell 1 For f1+f2 and f1+f3, the terminal device may determine the cell with the frequency point f2 or f3 as the candidate secondary cell.

For another example, the at least one candidate cell configured by the access network device includes cells 1-4, the terminal device selects cell 1 from the at least one candidate cell as the target primary cell, and the band of cell 1 is band1, and the CA band combination supported by cell 1 For band1+band2 and band1+band3, the terminal device may determine a cell with a bandwidth of band2 or band3 as a candidate secondary cell.

In an implementation manner, the terminal device can determine at least one candidate secondary cell from the cells that the terminal device can or is capable of detecting. For the convenience of subsequent descriptions, the at least one candidate secondary cell determined in this manner is recorded as at least one secondary cell. The first candidate secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, cell 1 satisfies the CHO execution condition, the terminal device selects cell 1 as the target primary cell, and the bandwidth of cell 1 is band1, and cell 1 indicated by the first information The supported CA band combinations are band1+band2 and band1+band3. The terminal device detects cell A, cell B, cell C, and cell D. The bandwidth of cell A and cell B is band2, the bandwidth of cell C is band3, and the bandwidth of cell C is band3. The bandwidth of D is band4. Since the band combination composed of cell A, cell B, and cell C and the target primary cell belongs to the CA band combination supported by the target primary cell, cell A, cell B, and cell C can be determined as the corresponding target primary cell. candidate secondary cells. Wherein, cell A, cell B, cell C, and cell D are different cells, cells 1-4 are different cells, and the cells in cells A-D and cells in cells 1-4 may be the same or different.

In another implementation manner, the terminal device may determine at least one candidate secondary cell from at least one candidate cell, and for the convenience of subsequent descriptions, the at least one candidate secondary cell determined in this manner is recorded as at least one second candidate secondary cell .

Optionally, if there are multiple candidate cells that satisfy the CHO execution condition, after determining the target primary cell from the multiple candidate cells, the UE may determine other candidate cells that satisfy the CHO execution condition except the target primary cell from the multiple candidate cells. Whether CA communication can be provided for the terminal device together with the target primary cell, the terminal device determines a cell in which CA communication can be provided for the terminal device together with the target primary cell as a candidate secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, wherein the bandwidth of cell 1 is band1, the bandwidth of cell 2 is band1, the bandwidth of cell 3 is band2, and the bandwidth of cell 4 is band3. According to the fourth information, the terminal device determines that the target primary cell is cell 1. The first information sent by the access network device to the terminal device may indicate CA band combination information supported by cells 1-4. For example, the first information indicates that the CA band combinations supported by cell 1 are band1+band2 and band1+band3. Since the target primary cell is cell 1, the terminal device can determine whether cell 2, cell 3, and cell 4 can provide CA communication for the terminal device together with cell 1. Since the band combination composed of cell 3 and the target primary cell belongs to the target primary cell The supported CA band combination, the band combination composed of cell 4 and the target primary cell belongs to the CA band combination supported by the target primary cell, so cell 3 and cell 4 can be determined as candidate secondary cells corresponding to the target primary cell.

In other embodiments, the terminal device may also consider the signal quality of the cell when determining at least one candidate secondary cell. For example, the terminal device selects a cell that can provide CA communication with the target primary cell and has better signal quality as the terminal device. candidate secondary cells. In an implementation manner, the source access network device can send the first signal quality threshold value to the terminal device, that is, step 605 is executed, so that the terminal device can choose to provide CA communication and signal quality for the terminal device together with the target primary cell. A cell higher than the first signal quality threshold value is used as a candidate secondary cell.

Optionally, the first signal quality threshold value may be sent through an RRC message.

For example, the first signal quality threshold value may be sent through an RRC reconfiguration message.

In other embodiments, when selecting the second candidate secondary cell from at least one candidate cell, the terminal device may also select the band combination formed with the target primary cell to belong to the target primary cell according to whether the candidate cell belongs to the same access network device The supported CA band combination, and the cell belonging to the same access network equipment as the target primary cell is used as the second candidate secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, where cells 1-3 belong to the first candidate access network device, cell 4 belongs to the second candidate access network device, and the bandwidth of cell 1 is band1 , the bandwidth of cell 2 is band1, the bandwidth of cell 3 is band2, and the frequency of cell 4 is band3. The terminal device determines, according to the fourth information, that cell 1, cell 3 and cell 4 all satisfy the CHO execution condition. In an example, the terminal device selects cell 1 as the target primary cell. The first information sent by the access network device to the terminal device may indicate the CA bandwidth band combination information supported by cells 1-4. For example, the first information indicates that the CA band combinations supported by cell 1 are band1+band2 and band1+band3. Then, the terminal device can determine that the band combination composed of cell 3 and cell 1 belongs to the CA band combination supported by cell 1, and the band combination composed of cell 4 and cell 1 belongs to the CA band combination supported by cell 1. They belong to the same access network device, and cell 4 and cell 1 belong to different access network devices. Therefore, the terminal device determines that cell 3 is the second candidate secondary cell.

In an implementation manner, the terminal device may obtain information on whether two or more candidate cells belong to the same access network device from the source access network device. Specifically, step 606 may be executed, that is, the source access network device sends the second information to the terminal device, and accordingly, the terminal device receives the second information sent by the source access network device, wherein the second information indicates at least one candidate cell in the whether two or more of the candidate cells belong to the same access network device, and/or the second information indicates whether two or more of the candidate cells in the at least one candidate cell belong to different access network devices .

For example, the at least one candidate cell configured by the access network device includes cells 1-4, the cells 1-3 belong to the same access network device, and the cells 1-3 and 4 do not belong to the same access network device. The second information may indicate that cell 1 and cell 2 belong to the same access network device, cell 1 and cell 3 belong to the same access network device, and cell 2 and cell 3 belong to the same access network device. Alternatively, the second indication information may indicate that cell 1, cell 2, and cell 3 belong to the same access network device. Alternatively, the second indication information may indicate that cell 1 and cell 4 do not belong to the same access network device, cell 2 and cell 4 do not belong to the same access network device, and cell 3 and cell 4 do not belong to the same access network device. Alternatively, the second information may indicate that cells 1-3 and cell 4 do not belong to the same access network device.

Optionally, the second information may be sent through an RRC message.

For example, the second information may be sent through an RRC reconfiguration message.

In step 607, the terminal device attempts to access/handover to the target primary cell. For example, the terminal device initiates a random access procedure to the target access network device, so that the terminal device switches/accesses the target access network device.

In step 608, after the terminal device accesses/handovers to the target primary cell, the terminal device sends information of at least one candidate secondary cell to the target access network device, and correspondingly, the target access network device receives the at least one candidate secondary cell sent by the terminal device. The information of the candidate secondary cell, wherein the target access network device is the access network device to which the target primary cell belongs, and FIG. 6 takes the first candidate access network device as the determined target access network device as an example. Optionally, the information of the at least one candidate secondary cell may include identification information of the at least one candidate secondary cell, a signal quality measurement result of the at least one candidate secondary cell, and the like.

Optionally, the above-mentioned identification information includes at least one of PCI, frequency information, CGI, cell index, measurement identification (measID) corresponding to the cell, and CHO-ConfigId corresponding to the cell.

Optionally, the information of at least one candidate secondary cell may be sent through an RRC message. For example, the information of at least one candidate secondary cell may be sent through the RRC reconfiguration complete message.

In some embodiments, the target access network device may determine at least one secondary cell according to the received information of at least one candidate secondary cell, that is, perform step 609 .

Optionally, the target access network device may configure some or all of the at least one candidate secondary cell reported by the terminal device as secondary cells and activate it. For example, the target access network device decides whether to configure CA and which cells can be finally determined as secondary cells according to the signal quality measurement result of at least one candidate secondary cell and whether it belongs to the same access network device as the target primary cell.

In some embodiments, step 610 may also be performed, that is, the target access network device may send the information of the finally determined at least one secondary cell to the terminal device. For example, the target access network device sends the determined cell information of at least one secondary cell and configuration information of at least one secondary cell (eg, information elements ServingCellConfig and ServingCellConfigCommon in TS38331-f70) to the terminal device. After receiving the above information, the terminal device may configure the secondary cell, and further, optionally, activate the secondary cell. That is, the terminal device can complete the CA configuration.

For example, the terminal device determines that cell 2 and cell 3 are the second candidate secondary cells. Then, the terminal device sends the information of the cell 2 and the cell 3 to the target access network device. Further, the target access network device can determine whether to configure CA and which cells are determined as secondary cells. In an example, the target access network device determines cell 2 as a secondary cell that can provide CA communication for the terminal device together with the target cell. , the target access network device sends the cell information and configuration information of cell 2 (for example, the information elements ServingCellConfig and ServingCellConfigCommon in TS38331-f70) to the terminal device, and then the terminal device configures cell 2 to be able to communicate with the target cell. (that is, cell 1) together provide the terminal equipment with a secondary cell for CA communication, further, optionally, the terminal equipment can activate cell 2, that is, the cell 1 and cell 2 under the jurisdiction of the target access network equipment can communicate with the terminal equipment at the same time, In other words, the band combination composed of cell 1 and cell 2 is the CA band combination supported by the terminal device/target access network device.

It should be noted that the secondary cell finally determined in the embodiment of the present application and the target primary cell belong to the same access network device.

It should also be noted that the first information, the second information, the third information and the fourth information shown in FIG. 6 may be sent through one message, or may be sent through different messages, which are not specifically limited in the embodiments of the present application. In addition, the embodiment of the present application does not specifically limit the execution sequence of steps 601 , 604 , 605 and 606 . It should also be noted that the above only describes the case where the RRC configuration complete message is a reply to the first message in step 601, if the first message, the second message, the third message and the fourth message pass through the same message message sending, the RRC configuration complete message is a reply to the RRC message containing the first information, the second information, the third information and the fourth information; if the second information, the third information and the fourth information are different from the first information through If the message is sent, there may be corresponding replies to the different messages.

In the above technical solution, the source access network device indicates to the terminal device the CA band combination information supported by at least one candidate cell, the information on whether the candidate cells belong to the same access network device, and the signal quality threshold value, etc., so that the terminal device After determining the target primary cell and successfully accessing the target primary cell, the device can send the information of the cell that can provide CA communication for the terminal device together with the target primary cell to the target primary cell, and then the target primary cell can decide whether it is the terminal The device configures CA and which cells are configured as secondary cells. Through this technical solution, the CA can be quickly configured in the CHO process, which helps to reduce the CA configuration delay and improve the system throughput.

FIG. 7 is a schematic flowchart of a DC configuration method provided by an embodiment of the present application. The method shown in FIG. 7 includes at least part of the following.

The method shown in FIG. 7 may be performed by the terminal device and the access network device, or may be performed by a module or unit (eg, circuit, chip, or SOC, etc.) in the terminal device and the access network device. In FIG. 7 , a DC configuration method according to an embodiment of the present application is described by taking a terminal device and an access network device as an execution subject as an example.

In step 701, the source access network device sends first information to the terminal device, and correspondingly, the terminal device receives the first information from the source access network device. Wherein, the first information indicates DC band combination information supported by at least one candidate cell.

In this embodiment of the present application, at least one candidate cell is used by the terminal device to select the target primary cell from it. That is, the terminal device can determine the target primary cell to be handed over to from at least one candidate cell.

In some embodiments, the first information may indicate DC band information supported by some or all of the candidate cells in the at least one candidate cell.

For example, at least one candidate cell configured by the access network device includes cell 1, cell 2, and cell 4. The frequency point of cell 1 is f1, the DC band combinations supported by cell 1 are f1+f2 and f1+f4, and the frequency point of cell 2 is f1+f2. The point is f5, the DC band combination supported by cell 2 is f5+f1, the frequency point of cell 4 is f2, and the DC band combination supported by cell 4 is f2+f3. The DC band combination is f1+f2 and f1+f4, the CA band combination supported by cell 2 is f5+f1, and the DC band combination supported by cell 4 is f2+f3.

For another example, at least one candidate cell configured by the access network device includes cell 1, cell 2, and cell 4. The bandwidth of cell 1 is band1, the DC band combinations supported by cell 1 are band1+band2 and band1+band4, and the bandwidth of cell 4 is band1+band2 and band1+band4. is band2, and the DC band combination supported by cell 4 is band2+band3. In this case, the first information can indicate that the DC band combination supported by cell 1 is band1+band2 and band1+band4, and the DC band combination supported by cell 4 is band2. +band3.

Optionally, the first information may be sent through an RRC message.

For example, the first information may be carried in an RRC reconfiguration message.

Optionally, the first information may be sent through one or more RRC messages.

For example, the source access network device can send multiple RRC messages, and each RRC message can carry the DC band combination information supported by a candidate cell.

For another example, the source access network device may send an RRC message, where the RRC message may carry DC band information supported by some or all of the candidate cells in the at least one candidate cell.

In step 702, the terminal device selects/determines a target primary cell from at least one candidate cell. The selection/determination method of the target cell in this embodiment of the present application is similar to the selection/determination method of the target cell in FIG. 6 . For example, step 702 may refer to the description of step 602, and step 704 may refer to the description of step 604, which will not be repeated here. .

In step 703, the terminal device determines at least one candidate primary and secondary cell according to the first information.

In some embodiments, the terminal device determines at least one candidate primary and secondary cell according to the determined target primary cell and the DC band combination supported by the target primary cell, wherein the band combination composed of the at least one candidate primary and secondary cell and the target primary cell belongs to DC band combination supported by the target primary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, the terminal device selects cell 1 from the at least one candidate cell as the target primary cell, and the frequency point of cell 1 is f1, and the DC band combination supported by cell 1 For f1+f2 and f1+f4, the terminal device may determine the cell with the frequency point f2 or f4 as the candidate primary and secondary cells.

For another example, the at least one candidate cell configured by the access network device includes cells 1-4, the terminal device selects cell 1 from the at least one candidate cell as the target primary cell, and the band of cell 1 is band1, and the DC band combination supported by cell 1 For band1+band2 and band1+band4, the terminal device may determine a cell with a bandwidth of band2 or band4 as a candidate primary and secondary cell.

In an implementation manner, the terminal device may determine at least one candidate primary and secondary cell from the cells that the terminal device can or is capable of detecting. For the convenience of the subsequent description, the at least one candidate primary and secondary cell determined in this manner is recorded as At least one first candidate primary and secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, cell 1 satisfies the CHO execution condition, the terminal device selects cell 1 as the target primary cell, and the bandwidth of cell 1 is band1, and cell 1 indicated by the first information The supported DC band combinations are band1+band2 and band1+band4. The terminal device detects cell A, cell B, cell C, and cell D. The bandwidth of cell A and cell B is band2, the bandwidth of cell C is band3, and the bandwidth of cell C is band3. The bandwidth of D is band4. Since the band combination composed of cell A, cell B, and cell D and the target primary cell belongs to the DC band combination supported by the target primary cell, the terminal device can determine that cell A, cell B, and cell D are the target primary cell. The corresponding candidate primary and secondary cells. Wherein, cell A, cell B, cell C, and cell D are different cells, cells 1-4 are different cells, and the cells in cells A-D and cells in cells 1-4 may be the same or different.

In another implementation manner, the terminal device may determine at least one candidate primary and secondary cell from at least one candidate cell, and for the convenience of subsequent description, the at least one candidate primary and secondary cell determined in this manner is recorded as at least one second candidate Primary and secondary districts.

Optionally, if there are multiple candidate cells that satisfy the CHO execution conditions, after determining the target primary cell from the multiple candidate cells, the terminal device can determine other candidates that satisfy the CHO execution conditions except the target primary cell from the multiple candidate cells. Whether the cell can provide DC communication for the terminal device together with the target primary cell, the terminal device determines the cell in which the DC communication can be provided for the terminal device together with the target primary cell as a candidate primary and secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, wherein the bandwidth of cell 1 is band1, the bandwidth of cell 2 is band2, the bandwidth of cell 3 is band2, and the bandwidth of cell 4 is band3. According to the fourth information, the terminal device determines that the target primary cell is cell 1. The first information sent by the access network device to the terminal device may indicate DC band combination information supported by cells 1-4. For example, the first information indicates that the DC band combinations supported by cell 1 are band1+band2 and band1+band4. Since the target primary cell is cell 1, the terminal equipment can determine whether cell 2, cell 3, and cell 4 can provide DC communication with cell 1 for the terminal equipment. DC band combination, the band combination composed of cell 3 and the target primary cell belongs to the DC band combination supported by the target primary cell, so the terminal device can determine cell 2 and cell 3 as candidate primary and secondary cells corresponding to the target primary cell.

In other embodiments, the terminal device may also consider the signal quality of the cell when determining at least one candidate primary and secondary cell. For example, the terminal device selects a cell that can provide DC communication with the target primary cell for the terminal device and has better signal quality as a candidate primary and secondary cell. In an implementation manner, the source access network device can send the second signal quality threshold value to the terminal device, that is, step 705 is executed, so that the terminal device can choose to provide DC communication and signal quality for the terminal device together with the target primary cell. A cell higher than the second signal quality threshold value is used as a candidate primary and secondary cell.

Optionally, the second signal quality threshold value may be sent through an RRC message.

For example, the second signal quality threshold value may be sent through an RRC reconfiguration message.

In other embodiments, when selecting the second candidate primary and secondary cells from at least one candidate cell, the terminal device may also select the band combination composed of the target primary cell and the target primary cell to belong to the target according to whether the candidate cells belong to the same access network device. The DC band combination supported by the primary cell and the cell belonging to a different access network device from the target primary cell is used as the second candidate primary and secondary cell.

For example, at least one candidate cell configured by the access network device includes cells 1-4, where cells 1-3 belong to the first candidate access network device, cell 4 belongs to the second candidate access network device, and the bandwidth of cell 1 is band1 , the bandwidth of cell 2 is band2, the bandwidth of cell 3 is band2, and the bandwidth of cell 4 is band4. The terminal device determines, according to the fourth information, that cell 1, cell 3 and cell 4 all satisfy the CHO execution condition. In an example, the terminal device selects cell 1 as the target primary cell. The first information sent by the access network device to the terminal device may indicate DC band combination information supported by cells 1-4. For example, the first information indicates that the DC band combinations supported by cell 1 are band1+band2 and band1+band4. Then, the terminal device determines that the band combinations composed of cell 2, cell 3 and cell 1 belong to the DC band combination supported by cell 1, but since cell 2, cell 3 and cell 1 belong to the same access network device, therefore, cell 2, cell 3 and cell 1 belong to the same access network device. Cell 3 cannot be a candidate primary and secondary cell of the target primary cell. In addition, the terminal device determines that the band combination composed of cell 4 and cell 1 belongs to the DC band combination supported by cell 1, and that cell 4 and cell 1 belong to different access network devices. Therefore, the terminal device can determine cell 4 as the target host. The second candidate primary and secondary cells of the cell.

In an implementation manner, the terminal device may obtain information on whether two or more candidate cells belong to the same access network device from the source access network device. Specifically, step 706 may be executed, that is, the source access network device sends the second information to the terminal device, and accordingly, the terminal device receives the second information sent by the source access network device, where the second information indicates at least one candidate cell in the whether two or more of the candidate cells belong to the same access network device, and/or the second information indicates whether two or more of the candidate cells in the at least one candidate cell belong to different access network devices .

Optionally, the second information may be sent through an RRC message.

For example, the second information may be sent through an RRC reconfiguration message.

In step 707, the terminal device attempts to access/handover to the target primary cell. For example, the terminal device initiates a random access procedure to the target access network device, so that the terminal device switches/accesses the target access network device.

In step 708, after the terminal device accesses/handovers to the target primary cell, the terminal device sends information of at least one candidate primary and secondary cell to the target access network device, and accordingly, the target access network device receives at least one information sent by the terminal device. Information of a candidate primary and secondary cell, wherein the target access network device is the access network device to which the target primary cell belongs. In FIG. 7 , the first candidate access network device is the determined target access network device as an example. Optionally, the information of the at least one candidate primary and secondary cell may include identification information of the at least one candidate primary and secondary cell, a signal quality measurement result of the at least one candidate primary and secondary cell, and the like.

Optionally, the above-mentioned identification information includes at least one of PCI, frequency information, CGI, cell index, measurement identification (measID) corresponding to the cell, and CHO-ConfigId corresponding to the cell.

Optionally, the information of at least one candidate primary and secondary cell may be sent through an RRC message.

For example, the information of at least one candidate secondary primary cell may be sent through the RRC reconfiguration complete message.

In some embodiments, the target access network device may determine the primary and secondary cells according to the received information of at least one candidate primary and secondary cell, and perform step 709 .

Optionally, the target access network device may determine one of the at least one candidate primary and secondary cells reported by the terminal device as the primary and secondary cell.

For example, the target access network device decides whether to configure DC and which cell to add as the primary and secondary cell according to the signal quality measurement result of at least one candidate primary and secondary cell and whether it belongs to the same access network device as the target primary cell.

Optionally, in step 710, after the target access network device determines the primary and secondary cells, it may perform a secondary node addition process with the access network device to which the primary and secondary cells belong. It is not repeated here.

In some embodiments, step 711 may also be performed, that is, the target access network device may send the configuration information of the SCG to the terminal device. For example, after the secondary node addition process is completed, the target access network device sends the cell information of the primary and secondary cells, the configuration information of the primary and secondary cells (for example, the information elements ServingCellConfig and ServingCellConfigCommon in TS38331-f70), and the information of the secondary cells of the primary and secondary cells. The cell information and the configuration information of the secondary cells of the primary and secondary cells (for example, the information elements ServingCellConfig and ServingCellConfigCommon in TS38331-f70) are sent to the terminal device. After receiving the configuration information of the SCG, the terminal device can configure the SCG. For example, the terminal equipment performs the configuration of the primary and secondary cells, and optionally performs the configuration of the secondary cells of the primary and secondary cells. That is, the terminal device can complete the DC configuration.

For example, at least one candidate cell configured by the access network device includes cells 1-4, where cell 1-2 belongs to the first candidate access network device, cell 3-4 belongs to the second candidate access network device, and the bandwidth of cell 1 is band1, the bandwidth of cell 2 is band2, the bandwidth of cell 3 is band2, and the frequency of cell 4 is band3. According to the fourth information, the terminal device determines that cell 1, cell 3, and cell 4 all meet the CHO execution conditions. In an example, the terminal device selects cell 1 as the target primary cell, and the target access network device is the first candidate access network equipment. The first information sent by the access network device to the terminal device may indicate carrier aggregation DC bandwidth band combination information supported by cells 1-4. For example, the first information indicates that the DC band combinations supported by cell 1 are band1+band2 and band1+band3. Then, the terminal device can determine that the band combinations composed of cell 2, cell 3, and cell 4 and cell 1 belong to the DC band combination supported by cell 1. Since cell 2 and cell 1 belong to the same access network device, cell 3, cell 4 and Cell 1 belongs to different access network devices. Therefore, the terminal device determines that cell 3 and cell 4 are the second candidate primary and secondary cells. Then, the terminal device sends the information of cell 3 and cell 4 to the target access network device. Further, the target access network device can determine whether to configure DC and which cell is determined as the primary and secondary cell. In an example, the target access network device determines cell 4 as a cell that can provide DC communication for the terminal device together with the target primary cell. primary and secondary cells, the target access network device sends the cell information and configuration information of cell 4 (for example, the information elements ServingCellConfig and ServingCellConfigCommon in TS38331-f70) to the terminal device, and then the terminal device configures cell 4 to enable Together with the target primary cell (that is, cell 1), the primary and secondary cells that provide the terminal equipment with DC communication, further, optionally, the terminal equipment can activate cell 4, that is, the cell 1 and the second candidate access under the jurisdiction of the target access network equipment The cell 4 governed by the network equipment can communicate with the terminal equipment at the same time. In other words, the band combination formed by the cell 1 and the cell 2 is the DC band combination supported by the terminal equipment/target access network equipment.

It should be noted that the target primary cell in the embodiment of the present application belongs to the primary access network device, and the finally determined primary and secondary cells belong to the secondary access network device, and the two belong to different access network devices.

It should also be noted that, for the description of some steps in FIG. 7 , reference may be made to steps having the same functions in FIG. 6 , and tedious descriptions are not repeated in FIG.

It should also be noted that, the first information, the second information, the third information and the fourth information shown in FIG. 7 may be sent through one message, or may be sent through different messages, which are not specifically limited in this embodiment of the present application. In addition, the embodiment of the present application does not specifically limit the execution sequence of steps 701 , 704 , 705 and 706 .

In the above technical solution, the source access network device indicates to the terminal device the DC band combination information supported by at least one candidate cell, the information on whether the candidate cells belong to the same access network device, and the signal quality threshold value, etc., so that the terminal device After the device determines the target primary cell and successfully accesses the target primary cell, it sends the information of the cell that can provide DC communication for the terminal device together with the target primary cell to the target primary cell, and then the target primary cell can decide whether it is a terminal device or not. Configure the DC and configure which cell is the primary and secondary cell. Through this technical solution, the DC can be quickly configured in the CHO process, so as to reduce the DC configuration delay and improve the system throughput.

It should be noted that, the embodiments shown in FIG. 6 and FIG. 7 may be implemented independently or in combination. When the embodiments shown in FIG. 6 and FIG. 7 are implemented together, the first information may indicate the CA band combination information and the DC band combination information supported by the at least one candidate cell; the second information may indicate two of the at least one candidate cell. Whether the one or more candidate cells belong to the same access network device, and/or indicates whether two or more candidate cells in at least one candidate cell do not belong to the same access network device; third information The first signal quality threshold value and the second signal quality threshold value may be indicated; the information of at least one secondary cell reported by the terminal equipment, wherein the cell in the at least one secondary cell may belong to the MCG or the SCG. The embodiments shown in Figure 6 and Figure 7 are implemented together, that is, the CA and DC are configured at the same time during the CHO process, which can quickly configure the CA and DC, which helps to reduce the configuration delay of the CA and DC and improve the system throughput. .

FIG. 8 is a schematic flowchart of a CA and/or DC configuration method provided by another embodiment of the present application. The method shown in FIG. 8 may be performed by the terminal device and the access network device, or may be performed by a module or unit (for example, a circuit, a chip or a system on a chip (SOC), etc. in the terminal device and the access network device, etc. )implement. In FIG. 8 , the CA and/or DC configuration method according to the embodiment of the present application is described by taking the terminal device and the access network device as the execution subjects as an example. The method shown in FIG. 8 includes at least part of the following.

In step 801, the source access network device may send fifth information to the terminal device. Correspondingly, the terminal device receives the fifth information sent by the source access network device.

The fifth information includes configuration information of at least one candidate cell, and the fifth information further includes configuration information of at least one third candidate secondary cell, configuration information of at least one third candidate primary secondary cell, and at least one fourth candidate secondary cell. At least one of the configuration information. Wherein, at least one third candidate secondary cell is a candidate secondary cell corresponding to at least one candidate cell, at least one third candidate primary secondary cell is a candidate primary secondary cell corresponding to at least one candidate cell, and at least one fourth candidate secondary cell is at least one candidate secondary cell Candidate secondary cells corresponding to the candidate primary and secondary cells. The band combination composed of the candidate cell and at least one third candidate secondary cell corresponding to the candidate cell belongs to the CA band combination supported by the candidate cell, and the band combination composed of the candidate cell and at least one third candidate primary and secondary cell corresponding to the candidate cell belongs to the CA band combination supported by the candidate cell. The DC band combination supported by the candidate cell, the band combination formed by the third candidate primary and secondary cell and at least one fourth candidate secondary cell corresponding to the third candidate primary and secondary cell belong to the CA band combination supported by the third candidate primary and secondary cell.

Optionally, the configuration information includes cell information and condition information. Specifically, the configuration information of the candidate cell includes the cell information of the candidate cell and the CHO execution condition information, the configuration information of the third candidate secondary cell includes the cell information of the third candidate secondary cell and the addition condition information of the secondary cell, the third candidate primary secondary cell The configuration information of the cell includes the cell information of the third candidate primary and secondary cells and the addition condition information of the primary and secondary cells, and the configuration information of the fourth candidate secondary cell includes the cell information of the fourth candidate secondary cell and the addition condition information of the secondary cell.

Optionally, the fifth information may be sent through an RRC message.

For example, the fifth information may be carried in the RRC reconfiguration message.

Optionally, the fifth information may be sent through one or more RRC messages.

After the terminal device receives the fifth information, the terminal device sends an RRC reconfiguration complete message to the source access network device, and accordingly, the source network device receives the RRC reconfiguration complete message sent by the terminal device.

In step 802, the terminal device selects/determines a target primary cell from at least one candidate cell.

The selection/determination method of the target cell in this embodiment of the present application is similar to the selection/determination method of the target cell in FIG. 6 , and will not be described in detail here. The difference is that in addition to acquiring the cell information of at least one candidate cell from the at least one candidate access network device, the source access network device also acquires cell information of at least one third candidate secondary cell and cell information of at least one third candidate primary and secondary cell. , and at least one of cell information of at least one fourth candidate secondary cell. In some implementation manners, the source access network device may obtain the above cell information through steps 807-808.

In addition to determining the CHO execution condition information of each candidate cell in the at least one candidate cell, the source access network device also determines the addition condition information of each third candidate secondary cell, the addition condition information of each third candidate primary and secondary cell, and At least one of the addition condition information of each fourth candidate secondary cell.

Among them, the CHO execution condition information of the candidate cell can refer to the relevant description in the conditional handover above, which will not be repeated here. The addition condition information of the third candidate secondary cell, the addition condition information of the third candidate primary and secondary cells, and the fourth candidate The addition condition information of the secondary cell is similar to the CHO execution condition information of the candidate cell, and may also include the event type and the threshold value corresponding to the event type. The specific event type may be similar to the event type in the CHO execution condition information, for example, A4 The event can be used as an event for adding a secondary cell/primary and secondary cell, that is, when the signal quality of the candidate secondary cell is higher than a certain threshold (such as the first threshold), the cell can be added as a secondary cell, or, when the candidate primary and secondary cells are When the signal quality is higher than a certain threshold (eg, a second threshold), the cell can be added as a primary and secondary cell. Similarly, A2, A3, A5, B1, and B2 can also be used as events for adding secondary cells/primary and secondary cells, which are not specifically limited in this embodiment of the present application.

In 803, the terminal device determines the secondary cell corresponding to the target primary cell, and/or determines the primary secondary cell corresponding to the target primary cell, and/or determines the secondary cell corresponding to the primary secondary cell corresponding to the target primary cell.

In case 1, the terminal device determines the secondary cell corresponding to the target primary cell.

When the fifth information includes configuration information of at least one candidate cell and configuration information of at least one third candidate secondary cell, the terminal device determines whether the at least one candidate cell satisfies the CHO execution condition, and the terminal device determines the candidate cell that satisfies the CHO execution condition as For a more detailed description of the target primary cell, please refer to the relevant description of the conditional handover above, which will not be repeated here. Further, the terminal device determines whether the at least one third candidate secondary cell corresponding to the target primary cell satisfies the addition condition of the secondary cell, and if the addition condition is satisfied, the terminal device adds the at least one third candidate secondary cell corresponding to the target primary cell to the secondary cell. All or part of the cells that satisfy the conditions for adding secondary cells are determined as target secondary cells corresponding to the target primary cell. For example, according to the protocol or network configuration, the terminal device can configure at most N secondary cells together with the target primary cell to provide CA communication for the terminal device. Then, in an example, the terminal device can add at least one third candidate that satisfies the secondary cell addition condition. At most N cells with the best signal quality in the secondary cell are determined as the target secondary cell corresponding to the target primary cell, or, in an example, the terminal device may randomly select at least one third candidate secondary cell that satisfies the secondary cell addition condition. At most N cells are determined as the target secondary cells corresponding to the target primary cell, or the target secondary cells are determined in other ways, which are not limited.

In case 2, the terminal device determines the primary and secondary cells corresponding to the target primary cell.

When the fifth information includes configuration information of at least one candidate cell and configuration information of at least one third candidate primary and secondary cell, the terminal device determines whether the at least one candidate primary cell satisfies the CHO execution condition, and the terminal device selects the candidate cell that satisfies the CHO execution condition Determined as the target primary cell. Further, the terminal device determines whether the at least one third candidate primary and secondary cell corresponding to the target primary cell satisfies the addition condition of the primary and secondary cells, and if the addition condition is satisfied, the terminal device adds the at least one third candidate primary and secondary cell corresponding to the target primary cell. Among the secondary cells, a cell that satisfies the conditions for adding the primary and secondary cells is determined as the target primary and secondary cell corresponding to the target primary cell. If there are multiple cells in at least one third candidate primary and secondary cell corresponding to the target primary cell that satisfy the conditions for adding primary and secondary cells, the terminal device can determine the cell with the highest signal quality as the target primary and secondary cell, or arbitrarily select one of them One of the cells is used as the target primary and secondary cells, or the cell with the highest frequency priority is determined as the target primary and secondary cells, or the target primary and secondary cells are determined in other ways, which is not limited in this embodiment.

In case 3, the terminal device determines the secondary cell corresponding to the target primary cell and the primary secondary cell corresponding to the target primary cell.

When the fifth information includes configuration information of at least one candidate cell, configuration information of at least one third candidate secondary cell, and configuration information of at least one third candidate primary and secondary cell, the terminal device determines whether at least one candidate primary cell satisfies the CHO execution condition , the terminal device determines the candidate cell that satisfies the CHO execution condition as the target primary cell. Further, the terminal device determines whether the at least one third candidate secondary cell corresponding to the target primary cell satisfies the addition condition of the secondary cell, and if the addition condition is satisfied, the terminal device adds the at least one third candidate secondary cell corresponding to the target primary cell to the secondary cell. All or part of the cells that satisfy the conditions for adding secondary cells are determined as the target secondary cells corresponding to the target primary cell. The specific method for determining the target secondary cell can refer to the above, and will not be repeated here; the terminal equipment determines at least one third cell corresponding to the target primary cell Whether the candidate primary and secondary cell satisfies the addition condition of the primary and secondary cells, if the addition condition is satisfied, the terminal device determines the cell that satisfies the primary and secondary cell addition conditions in at least one third candidate primary and secondary cell corresponding to the target primary cell as the target primary cell For the corresponding target primary and secondary cells, the specific method for determining the target primary and secondary cells may refer to the above, and will not be repeated here.

In case 4, the terminal device determines the primary and secondary cells corresponding to the target primary cell and the secondary cells corresponding to the primary and secondary cells corresponding to the target primary cell.

When the fifth information includes configuration information of at least one candidate cell, configuration information of at least one third candidate primary and secondary cell, and configuration information of at least one fourth candidate secondary cell, the terminal device determines whether at least one candidate primary cell satisfies the CHO execution condition , the terminal device determines the candidate cell that satisfies the CHO execution condition as the target primary cell. Further, the terminal device determines whether the at least one third candidate primary and secondary cell corresponding to the target primary cell satisfies the addition condition of the primary and secondary cells, and if the addition condition is satisfied, the terminal device adds the at least one third candidate primary and secondary cell corresponding to the target primary cell. Among the secondary cells, a cell that satisfies the conditions for adding the primary and secondary cells is determined as the target primary and secondary cell corresponding to the target primary cell, and the specific method for determining the target primary and secondary cell may refer to the above, and will not be repeated here. Further, the terminal device determines whether the at least one fourth candidate secondary cell corresponding to the target primary and secondary cell satisfies the addition condition of the secondary cell, and if the addition condition is satisfied, the terminal device adds the at least one fourth candidate secondary cell corresponding to the target primary secondary cell. Among the cells, a cell that satisfies the condition for adding a secondary cell is determined as a target secondary cell corresponding to the target primary and secondary cell. For example, according to the protocol or network configuration, the terminal device can configure at most M secondary cells together with the target primary and secondary cells to provide CA communication for the terminal device. Then, in an example, the terminal device can add at least one fourth cell that satisfies the secondary cell addition condition. In the candidate secondary cells, at most M cells with the best signal quality are determined as target secondary cells corresponding to the target primary secondary cell, or, in an example, the terminal device may randomly add at least one fourth candidate secondary cell that satisfies the secondary cell addition condition At most M cells in the target secondary cells are determined as target secondary cells corresponding to the target primary and secondary cells, or the target secondary cells are determined in other ways, which are not limited.

In case 5, the terminal device determines the secondary cell corresponding to the target primary cell, the primary secondary cell corresponding to the target primary cell, and the secondary cell corresponding to the primary secondary cell corresponding to the target primary cell.

When the fifth information includes configuration information of at least one candidate cell, configuration information of at least one third candidate secondary cell, configuration information of at least one third candidate primary secondary cell, and configuration information of at least one fourth candidate secondary cell, the terminal device It is judged whether at least one candidate primary cell satisfies the CHO execution condition, and the terminal device determines the candidate cell that satisfies the CHO execution condition as the target primary cell. Further, the terminal device determines whether the at least one third candidate secondary cell corresponding to the target primary cell satisfies the addition condition of the secondary cell, and if the addition condition is satisfied, the terminal device adds the at least one third candidate secondary cell corresponding to the target primary cell to the secondary cell. All or part of the cells that satisfy the conditions for adding secondary cells are determined as the target secondary cells corresponding to the target primary cell. The specific method for determining the target secondary cell can refer to the above, and will not be repeated here; the terminal equipment determines at least one third cell corresponding to the target primary cell Whether the candidate primary and secondary cell satisfies the addition condition of the primary and secondary cells, if the addition condition is satisfied, the terminal device determines the cell that satisfies the primary and secondary cell addition conditions in at least one third candidate primary and secondary cell corresponding to the target primary cell as the target primary cell For the corresponding target primary and secondary cells, the specific method for determining the target primary and secondary cells may refer to the above, and will not be repeated here. Further, the terminal device determines whether the at least one fourth candidate secondary cell corresponding to the target primary and secondary cell satisfies the addition condition of the secondary cell, and if the addition condition is satisfied, the terminal device adds the at least one fourth candidate secondary cell corresponding to the target primary secondary cell. Among the cells, a cell that satisfies the condition for adding a secondary cell is determined as the target secondary cell corresponding to the target primary and secondary cell, and the specific method for determining the target primary and secondary cell may refer to the above, and will not be repeated here.

Optionally, in some embodiments, steps 804 and 805 may also be performed.

In step 804, the terminal device attempts to access/handover to the target primary cell. For example, the terminal device initiates a random access procedure to the target access network device, so that the terminal device switches/accesses the target access network device. Optionally, corresponding to the above situation 1, the terminal device also attempts to access the target secondary cell corresponding to the target primary cell. For example, the terminal device may perform random access with the target secondary cell corresponding to the target primary cell. Optionally, corresponding to the above situation 2, the terminal device also attempts to access the target primary and secondary cells corresponding to the target primary cell. For example, the terminal device may perform random access with the target primary and secondary cells corresponding to the target primary cell. Optionally, corresponding to the above situation 3, the terminal device also attempts to access the target secondary cell corresponding to the target primary cell and the target primary secondary cell corresponding to the target primary cell. For example, the terminal device may perform random access with the target secondary cell corresponding to the target primary cell, and perform random access with the target primary secondary cell corresponding to the target primary cell. Optionally, corresponding to the above situation 4, the terminal device also attempts to access the target primary and secondary cells corresponding to the target primary cell and the target secondary cells corresponding to the target primary and secondary cells. For example, the terminal device may perform random access with the target primary and secondary cells corresponding to the target primary cell, and perform random access with the target secondary cells corresponding to the target primary and secondary cells. Optionally, corresponding to the above situation 5, the terminal device also attempts to access the target secondary cell corresponding to the target primary cell, the target primary secondary cell corresponding to the target primary cell, and the target secondary cell corresponding to the target primary secondary cell. For example, the terminal device may perform random access with the target secondary cell corresponding to the target primary cell, perform random access on the target primary and secondary cells corresponding to the target primary cell, and perform random access on the target secondary cell corresponding to the target primary and secondary cell.

In step 805, after the terminal device accesses/switches to the target primary cell, the terminal device sends sixth information to the target access network device, and accordingly, the target access network device receives the sixth information sent by the terminal device, wherein, The sixth information includes the information of the secondary cell corresponding to the target primary cell (that is, the information of the target secondary cell corresponding to the target primary cell), the information of the primary secondary cell corresponding to the target primary cell (that is, the information of the target primary secondary cell corresponding to the target primary cell) ) and at least one of the information of the secondary cells corresponding to the primary and secondary cells corresponding to the target primary cell (that is, the information of the target secondary cells corresponding to the target primary and secondary cells), and the target access network device is the access network to which the target primary cell belongs. network device, and FIG. 8 takes the first candidate access network device as an example.

Optionally, corresponding to the above case 1, the sixth information includes information of the target secondary cell corresponding to the target primary cell.

Optionally, corresponding to the above situation 2, the sixth information includes information of the target primary and secondary cells corresponding to the target primary cell.

Optionally, corresponding to the above situation 3, the sixth information includes information of the target secondary cell corresponding to the target primary cell and information of the target primary secondary cell corresponding to the target primary cell.

Optionally, corresponding to the above situation 4, the sixth information includes information of the target primary and secondary cells corresponding to the target primary cell, and information of the target secondary cells corresponding to the target primary and secondary cells.

Optionally, corresponding to the above situation 5, the sixth information includes information of the target secondary cell corresponding to the target primary cell, information of the target primary and secondary cell corresponding to the target primary cell, and information of the target secondary cell corresponding to the target primary and secondary cell.

Optionally, the information of the target primary and secondary cells may include identification information and/or signal quality measurement results of the target primary and secondary cells, and the information of the target secondary cells may include identification information and/or signal quality measurement results of the target secondary cells.

Optionally, the identification information may include at least one of the following items: cell index (eg, index), PCI, frequency information, CGI, measurement identification (measID) corresponding to the cell, and CHO-ConfigId corresponding to the cell.

Optionally, the sixth information may be sent through an RRC message.

For example, the sixth information may be sent through an RRC reconfiguration complete message.

Optionally, for the above cases 2, 3, 4 and 5, step 806 may also be performed. In step 806, the target access network device and the access network device to which the target primary and secondary cells belong to perform a secondary node adding process. For the specific adding process, please refer to the relevant description in FIG. 5, which will not be repeated here.

In the above technical solution, the source access network device may indicate the configuration information of at least one candidate cell to the terminal device, and in addition, the source access network device may indicate to the terminal device at least one of the following: configuration information of at least one candidate secondary cell that can provide the terminal device with CA communication together with the cells in the at least one candidate cell, configuration information of at least one candidate primary and secondary cell that can provide the terminal device with DC communication together with the cell in the at least one candidate cell, and can communicate with The cells in the at least one candidate primary and secondary cells together provide the terminal device with configuration information of at least one candidate secondary cell for CA communication, and the terminal device may determine the target primary cell according to the received information, optionally, the terminal device may determine At least one of the following: a target secondary cell corresponding to the target primary cell, a target primary secondary cell corresponding to the target primary cell, and a target secondary cell corresponding to the target primary secondary cell. Through this technical solution, the CA and/or DC can be rapidly configured in the CHO process, so as to reduce the CA and/or DC configuration delay and improve the system throughput.

It should be noted that, the above embodiments may be implemented independently, or may be implemented in a reasonable combination.

It can be understood that, in order to realize the functions in the foregoing embodiments, the communication apparatus includes corresponding hardware structures and/or software modules for performing each function. Those skilled in the art should easily realize that the units and method steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.

FIG. 9 and FIG. 10 are schematic structural diagrams of possible communication apparatuses provided by embodiments of the present application.

These apparatuses can be used to implement the functions of the terminal equipment and the access network equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiment of the present application, the communication apparatus may be a terminal device or an access network device, and may also be a module (eg, a chip) applied to the terminal device or the access network device.

As shown in FIG. 9 , the communication apparatus 900 includes a processing unit 910 and a transceiver unit 920 . The communication apparatus 900 is configured to implement the functions of the terminal device or the access network device in the foregoing method embodiments.

When the communication apparatus 900 is used to implement the functions of the terminal device in FIG. 6 and/or FIG. 7:

The transceiver unit 920 is configured to receive first information from the source access network device, where the first information indicates CA band combination information and/or DC band combination information supported by at least one candidate cell. The processing unit 910 is configured to select a target primary cell from the at least one candidate cell. The processing unit 910 is further configured to determine at least one candidate secondary cell and/or at least one candidate primary secondary cell according to the first information, wherein the band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the selected secondary cell. The CA band combination supported by the target primary cell, the band combination formed by the at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell. The transceiver unit 920 is further configured to send the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell to the access network device to which the target primary cell belongs.

Optionally, the transceiver unit 920 is further configured to receive second information from the source access network device, where the second information indicates whether two or more of the candidate cells belong to the same access network device. The processing unit 910 is specifically configured to determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell according to the first information and the second information, wherein the at least one candidate secondary cell is the same as the selected secondary cell. The band combination formed by the target primary cell belongs to the CA band combination supported by the target primary cell, the band combination formed by the at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell, The at least one second candidate secondary cell and the target primary cell belong to the same access network device, and the at least one second candidate primary secondary cell and the target primary cell belong to different access network devices.

Optionally, the transceiver unit 920 is further configured to receive third information from the source access network device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value. The processing unit 910 is specifically configured to determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell according to the first information and the third information, wherein the at least one candidate secondary cell is the same as the selected secondary cell. The band combination composed of the target primary cell belongs to the CA band combination supported by the target primary cell, and the signal quality of the at least one candidate secondary cell is greater than the first signal quality threshold, the at least one candidate primary secondary cell The band combination formed with the target primary cell belongs to the DC band combination supported by the target primary cell, and the signal quality of the at least one candidate primary and secondary cell is greater than the second signal quality threshold.

Optionally, the transceiver unit 920 is further configured to receive the information of at least one secondary cell corresponding to the target primary cell and/or the information of the primary secondary cell corresponding to the target primary cell sent by the target access network device. The access network device is the access network device to which the target primary cell belongs.

Optionally, the transceiver unit 920 is further configured to receive fourth information from the source access network device, where the fourth information indicates the cell information of the at least one candidate cell and the CHO execution condition information of the at least one candidate cell. . The processing unit 910 is specifically configured to select the target primary cell from the at least one candidate cell according to the fourth information, where the target primary cell is a cell that satisfies the CHO execution condition.

When the communication apparatus 900 is used to implement the functions of the source access network device in FIG. 6 and/or FIG. 7:

The processing unit 910 is configured to determine first information, where the first information indicates CA band combination information and/or DC band combination information supported by at least one candidate cell, where the at least one candidate cell is used by the terminal device to select a target primary cell. The transceiver unit 920 is configured to send the first information to the terminal device.

Optionally, the transceiver unit 920 is further configured to send second information to the terminal device, where the second information indicates whether two or more of the candidate cells belong to the same access network device.

Optionally, the transceiver unit 920 is further configured to send third information to the terminal device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value.

Optionally, the transceiver unit 920 is further configured to send fourth information to the terminal device, where the fourth information indicates cell information of the at least one candidate cell and CHO execution condition information of the at least one candidate cell.

When the communication apparatus 900 is used to implement the functions of the target access network device in FIG. 6 and/or FIG. 7:

The transceiver unit 920 is configured to receive the information of at least one candidate secondary cell and/or the information of at least one candidate primary secondary cell sent by the terminal device, where the target access network device is the access network to which the target primary cell that satisfies the CHO execution condition belongs. equipment. The processing unit 910 is configured to determine at least one secondary cell corresponding to the target primary cell and/or corresponding to the target primary cell according to the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell primary and secondary districts.

Optionally, the transceiver unit 920 is further configured to send the information of the at least one secondary cell and/or the information of the primary and secondary cells to the terminal device.

Optionally, the transceiver unit 920 and the processing unit 910 are further configured to perform a secondary node addition process with the access network device to which the primary and secondary cell belongs when the target access network device determines the primary and secondary cell.

When the communication apparatus 900 is used to realize the functions of the terminal device in FIG. 8:

The transceiver unit 920 is configured to receive configuration information of at least one candidate cell from the source access network device, and receive configuration information of at least one third candidate secondary cell, configuration information of at least one third candidate primary secondary cell, and at least one fourth candidate secondary cell at least one of the configuration information of the secondary cell, wherein the at least one candidate cell is used by the terminal device to select the target primary cell, and the at least one third candidate secondary cell corresponding to the first candidate cell is the same as the first candidate cell. The bandwidth band combination composed of the candidate cell belongs to the CA band combination supported by the first candidate cell, and the band combination composed of at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell It belongs to the DC band combination supported by the first candidate cell, and the band combination composed of at least one of the fourth candidate secondary cell corresponding to the fifth candidate primary and secondary cell and the fifth candidate primary and secondary cell belongs to the fifth candidate The CA band combination supported by the primary and secondary cells, the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any one of the at least one third candidate primary and secondary cells ; the configuration information includes cell information and condition information, the condition information indicates the CHO execution condition, the addition condition of the secondary cell or the addition condition of the primary and secondary cells. The processing unit 910 is configured to select a target primary cell from the at least one candidate cell according to the configuration information of the at least one candidate cell. The processing unit 910 is further configured to determine, according to the configuration information of the at least one third candidate secondary cell, a secondary cell corresponding to the target primary cell from at least one of the third candidate secondary cells corresponding to the target primary cell; and or, according to the configuration information of the at least one third candidate primary and secondary cell, the terminal device determines, from at least one of the third candidate primary and secondary cells corresponding to the target primary cell, the primary secondary cell corresponding to the target primary cell A secondary cell; and/or, the terminal device determines, according to the configuration information of the at least one fourth candidate secondary cell, from at least one of the fourth candidate secondary cells corresponding to the primary secondary cell, the corresponding primary secondary cell sub-district.

Optionally, the transceiver unit 920 is further configured to send the information about the secondary cell corresponding to the target primary cell, the information about the primary secondary cell, and the information about the secondary cell corresponding to the primary secondary cell to the target access network device. At least one of the target access network equipment is the access network equipment to which the target primary cell belongs.

When the communication apparatus 900 is used to implement the function of the source access network device in FIG. 8:

The transceiver unit 920 is configured to receive cell information of at least one candidate cell, and receive cell information of at least one third candidate secondary cell, cell information of at least one third candidate primary secondary cell, and cell information of at least one fourth candidate secondary cell At least one of the candidate cells, wherein the at least one candidate cell is used by the terminal equipment to select the target primary cell, and the bandwidth band combination composed of at least one of the third candidate secondary cell corresponding to the first candidate cell and the first candidate cell belongs to The CA band combination supported by the first candidate cell, the band combination formed by at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to the first candidate cell support DC band combination, the band combination formed by at least one of the fourth candidate secondary cell corresponding to the fifth candidate primary and secondary cell and the fifth candidate primary and secondary cell belongs to the CA band combination supported by the fifth candidate primary and secondary cell , the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any one of the at least one third candidate primary and secondary cell; it is also used to send to the terminal device configuration information of the at least one candidate cell, and sending the configuration information of the at least one third candidate secondary cell, the configuration information of the at least one third candidate primary secondary cell, and the configuration of the at least one fourth candidate secondary cell At least one of the information, the configuration information includes cell information and condition information, and the condition information indicates a CHO execution condition, an addition condition of a secondary cell, or an addition condition of the primary and secondary cells.

When the communication apparatus 900 is used to realize the function of the target access network device in FIG. 8:

The transceiver unit 920 is configured to receive at least one of the information of the secondary cell corresponding to the target primary cell, the information of the primary and secondary cell corresponding to the target primary cell, and the information of the secondary cell corresponding to the primary secondary cell sent by the terminal device, The target primary cell satisfies the CHO execution condition, and the target access network device is the access network device to which the target primary cell belongs. The transceiver unit 920 and the processing unit 910 are configured to perform a secondary node adding process with the access network device to which the primary and secondary cells belong.

More detailed descriptions about the above-mentioned processing unit 910 and the transceiver unit 920 can be obtained directly by referring to the relevant descriptions in the method embodiments, and details are not repeated here.

As shown in FIG. 10 , the communication apparatus 1000 includes a processor 1010 and an interface circuit 1020 . The processor 1010 and the interface circuit 1020 are coupled to each other. It can be understood that the interface circuit 1020 can be a transceiver or an input-output interface. Optionally, the communication apparatus 1000 may further include a memory 1030 for storing instructions executed by the processor 1010 or input data required by the processor 1010 to run the instructions or data generated after the processor 1010 runs the instructions.

When the communication apparatus 1000 is used to implement the above method embodiments, the processor 1010 is used to execute the functions of the above processing unit 910 , and the interface circuit 1020 is used to execute the functions of the above transceiver unit 920 .

When the above communication device is a chip applied to a terminal device, the chip implements the functions of the terminal device in the above method embodiments. The chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, and the information is sent to the terminal device by other network elements; or, the chip sends information to other modules in the terminal device (such as radio frequency modules or antennas) information, which is sent by the terminal device to other network elements.

When the above communication device is a chip applied to the source access network device, the chip implements the functions of the source access network device in the above method embodiments. The chip receives information from other modules (such as radio frequency modules or antennas) in the source access network device, and the information is sent by other network elements to the source access network device; or, the chip sends information to other devices in the source access network device. A module (such as a radio frequency module or an antenna) sends information, which is sent by the source access network device to other network elements.

When the above communication device is a chip applied to the target access network device, the chip implements the functions of the target access network device in the above method embodiments. The chip receives information from other modules (such as radio frequency modules or antennas) in the target access network device, and the information is sent by other network elements to the target access network device; or, the chip sends information to other modules in the target access network device. A module (such as a radio frequency module or an antenna) sends information, which is sent by the target access network device to other network elements.

It can be understood that the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (Random Access Memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM) , PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or known in the art in any other form of storage medium. An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and storage medium may reside in an ASIC. In addition, the ASIC may be located in the terminal device, the source access network device or the target access network device. Of course, the processor and the storage medium may also exist in the terminal device, the source access network device or the target access network device as discrete components.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer program or instructions may be stored in or transmitted over a computer-readable storage medium. The computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media. The usable media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as DVD; and semiconductor media, such as solid state disks (SSD).

In the various embodiments of the present application, if there is no special description or logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the related objects are a kind of "or" relationship; in the formula of this application, the character "/" indicates that the related objects are a kind of "division" Relationship.

It can be understood that, various numbers and numbers involved in the embodiments of the present application are only used to distinguish for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence numbers of the above processes does not imply the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (48)

A configuration method, characterized in that the method comprises: The terminal device receives first information from the source access network device, where the first information indicates carrier aggregation CA bandwidth band combination information and/or dual-connectivity DC band combination information supported by at least one candidate cell; selecting, by the terminal equipment, a target primary cell from the at least one candidate cell; The terminal device determines at least one candidate secondary cell and/or at least one candidate primary secondary cell according to the first information, wherein a band combination composed of the at least one candidate secondary cell and the target primary cell belongs to the target The CA band combination supported by the primary cell, the band combination formed by the at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell; The terminal device sends the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell to the access network device to which the target primary cell belongs. The method of claim 1, wherein: The at least one candidate secondary cell includes at least one first candidate secondary cell and/or at least one second candidate secondary cell, the at least one first candidate secondary cell is a cell that the terminal device is capable of detecting, and the at least one first candidate secondary cell is a cell capable of being detected by the terminal device. one second candidate secondary cell belongs to the at least one candidate cell; and/or, The at least one candidate primary and secondary cell includes at least one first candidate primary and secondary cell and/or at least one second candidate primary and secondary cell, and the at least one first candidate primary and secondary cell is a cell that the terminal device is capable of detecting , the at least one second candidate primary and secondary cell belongs to the at least one candidate cell. The method of claim 2, wherein: The method also includes: The terminal device receives second information from the source access network device, the second information indicating whether two or more of the candidate cells belong to the same access network device; The terminal device determines at least one candidate secondary cell and/or at least one candidate primary and secondary cell according to the first information, including: The terminal device determines, according to the first information and the second information, the at least one candidate secondary cell and/or the at least one candidate primary secondary cell, wherein the at least one candidate secondary cell and the target The band combination composed of the primary cell belongs to the CA band combination supported by the target primary cell, the band combination composed of the at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell, and the At least one second candidate secondary cell and the target primary cell belong to the same access network device, and the at least one second candidate primary secondary cell and the target primary cell belong to different access network devices. The method according to any one of claims 1 to 3, characterized in that: The method also includes: The terminal device receives third information from the source access network device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value; The terminal device determines at least one candidate secondary cell and/or at least one candidate primary and secondary cell according to the first information, including: The terminal device determines the at least one candidate secondary cell and/or the at least one candidate primary secondary cell according to the first information and the third information, wherein the at least one candidate secondary cell and the target The band combination composed of the primary cell belongs to the CA band combination supported by the target primary cell, and the signal quality of the at least one candidate secondary cell is greater than the first signal quality threshold value, and the at least one candidate primary secondary cell and the The band combination formed by the target primary cell belongs to the DC band combination supported by the target primary cell, and the signal quality of the at least one candidate primary and secondary cell is greater than the second signal quality threshold. The method according to any one of claims 1 to 4, characterized in that, The method also includes: The terminal device receives the information of at least one secondary cell corresponding to the target primary cell and/or the information of the primary secondary cell corresponding to the target primary cell sent by the target access network device, where the target access network device is the target access network device. The access network equipment to which the target primary cell belongs. The method according to any one of claims 1 to 5, wherein, The method also includes: receiving, by the terminal device, fourth information from the source access network device, where the fourth information indicates cell information of the at least one candidate cell and conditional handover CHO execution condition information of the at least one candidate cell; The terminal equipment selects a target primary cell from the at least one candidate cell, including: The terminal device selects the target primary cell from the at least one candidate cell according to the fourth information, where the target primary cell is a cell that satisfies the CHO execution condition. The method of claim 6, wherein: The cell information includes at least one of the following items: a cell wireless network temporary identifier C-RNTI allocated by the cell to the terminal device, random access channel RACH resource information used to access the cell, index information corresponding to the cell, The cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, the frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, and the radio link control RLC layer configuration corresponding to the cell parameters, the configuration parameters of the packet data convergence protocol PDCP layer corresponding to the cell, the configuration parameters of the service data adaptation protocol SDAP layer corresponding to the cell, and the configuration parameters of the radio resource control RRC layer corresponding to the cell. The method according to claim 6 or 7, wherein, The CHO execution condition information includes an event type and a threshold value corresponding to the event type. A configuration method, characterized in that the method comprises: The source access network device determines first information, where the first information indicates carrier aggregation CA bandwidth band combination information and/or dual-connectivity DC band combination information supported by at least one candidate cell, and the at least one candidate cell is used for terminal device selection target primary cell; The source access network device sends the first information to the terminal device. The method according to claim 9, wherein the CA band combination information is used by the terminal device to determine at least one candidate secondary cell, and the DC band combination information is used by the terminal device to determine at least one candidate primary and secondary cell. The method according to claim 9 or 10, wherein the method further comprises: The source access network device sends second information to the terminal device, where the second information indicates whether two or more of the candidate cells belong to the same access network device. The method according to any one of claims 9 to 11, wherein the method further comprises: The source access network device sends third information to the terminal device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value. The method according to any one of claims 9 to 12, wherein the method further comprises: The source access network device sends fourth information to the terminal device, where the fourth information indicates cell information of the at least one candidate cell and conditional handover CHO execution condition information of the at least one candidate cell. The method of claim 13, wherein: The cell information includes at least one of the following items: a cell wireless network temporary identifier C-RNTI allocated by the cell to the terminal device, random access channel RACH resource information used to access the cell, index information corresponding to the cell, The cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, the frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, and the radio link control RLC layer configuration corresponding to the cell parameters, the configuration parameters of the packet data convergence protocol PDCP layer corresponding to the cell, the configuration parameters of the service data adaptation protocol SDAP layer corresponding to the cell, and the configuration parameters of the radio resource control RRC layer corresponding to the cell. The method according to claim 13 or 14, wherein, The CHO execution condition information includes an event type and a threshold value corresponding to the event type. A configuration method, characterized in that the method comprises: The target access network device receives the information of at least one candidate secondary cell and/or the information of at least one candidate primary and secondary cell sent by the terminal device, and the target access network device is the access point to which the target primary cell that satisfies the conditional handover CHO execution condition belongs. network access equipment; The target access network device determines at least one secondary cell and/or the target primary cell corresponding to the target primary cell according to the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell. The primary and secondary cells corresponding to the cell. The method of claim 16, wherein the method further comprises: The target access network device sends the information of the at least one secondary cell and/or the information of the primary and secondary cells to the terminal device. The method according to claim 16 or 17, wherein when the target access network device determines the primary and secondary cells, the method further comprises: The target access network device and the access network device to which the primary and secondary cells belong to perform a secondary node addition process. A configuration method, characterized in that the method comprises: The terminal device receives configuration information of at least one candidate cell from the source access network device, and receives configuration information of at least one third candidate secondary cell, configuration information of at least one third candidate primary secondary cell, and at least one fourth candidate secondary cell. At least one of the configuration information, wherein the at least one candidate cell is used by the terminal device to select a target primary cell, and at least one third candidate secondary cell corresponding to the first candidate cell is composed of the first candidate cell The bandwidth band combination belongs to the carrier aggregation CA band combination supported by the first candidate cell, and the band combination composed of at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to The dual-connection DC band combination supported by the first candidate cell, the band combination composed of at least one of the fourth candidate secondary cell corresponding to the fifth candidate primary and secondary cell and the fifth candidate primary and secondary cell belongs to the fifth candidate primary and secondary cell. CA band combination supported by candidate primary and secondary cells, the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any of the at least one third candidate primary and secondary cells One; the configuration information includes cell information and condition information, and the condition information indicates a conditional handover CHO execution condition, an addition condition of a secondary cell, or an addition condition of the primary and secondary cells; selecting, by the terminal device, a target primary cell from the at least one candidate cell according to the configuration information of the at least one candidate cell; The terminal device determines, according to the configuration information of the at least one third candidate secondary cell, a secondary cell corresponding to the target primary cell from at least one of the third candidate secondary cells corresponding to the target primary cell; and/or , the terminal device determines, according to the configuration information of the at least one third candidate primary and secondary cell, the primary and secondary cell corresponding to the target primary cell from at least one of the third candidate primary and secondary cells corresponding to the target primary cell and/or, the terminal device determines, according to the configuration information of the at least one fourth candidate secondary cell, the secondary cell corresponding to the primary secondary cell from at least one of the fourth candidate secondary cells corresponding to the primary secondary cell community. The method of claim 19, wherein the method further comprises: The terminal device sends at least one of the information of the secondary cell corresponding to the target primary cell, the information of the primary secondary cell, and the information of the secondary cell corresponding to the primary secondary cell to the target access network device, the The target access network device is the access network device to which the target primary cell belongs. The method according to claim 19 or 20, wherein the cell information includes at least one of the following items: The cell radio network temporary identifier C-RNTI allocated by the cell to the terminal device, the random access channel RACH resource information used to access the cell, the index information corresponding to the cell, the cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, The frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, the radio link control RLC layer configuration parameters corresponding to the cell, the packet data convergence protocol PDCP layer configuration parameters corresponding to the cell, The service data adaptation protocol SDAP layer configuration parameters corresponding to the cell, and the radio resource control RRC layer configuration parameters corresponding to the cell. The method according to any one of claims 19 to 21, wherein, The condition information includes an event type and a threshold value corresponding to the event type. A configuration method, characterized in that the method comprises: The source access network device receives cell information of at least one candidate cell, and receives cell information of at least one third candidate secondary cell, cell information of at least one third candidate primary secondary cell, and cell information of at least one fourth candidate secondary cell At least one of the candidate cells, wherein the at least one candidate cell is used by the terminal equipment to select the target primary cell, and the bandwidth band combination composed of at least one of the third candidate secondary cell corresponding to the first candidate cell and the first candidate cell belongs to The carrier aggregation CA band combination supported by the first candidate cell, and the band combination composed of at least one of the third candidate primary and secondary cells corresponding to the first candidate cell and the first candidate cell belongs to the first candidate cell The dual-connection DC band combination supported by the cell, the band combination composed of at least one of the fourth candidate secondary cell and the fifth candidate primary and secondary cell corresponding to the fifth candidate primary and secondary cell belongs to the fifth candidate primary and secondary cell support The CA band combination, the first candidate cell is any one of the at least one candidate cell, and the fifth candidate primary and secondary cell is any one of the at least one third candidate primary and secondary cells; The source access network device sends the configuration information of the at least one candidate cell to the terminal device, and sends the configuration information of the at least one third candidate secondary cell, the configuration information of the at least one third candidate primary secondary cell, and At least one of the configuration information of the at least one fourth candidate secondary cell, the configuration information includes cell information and condition information, and the condition information indicates the conditional handover CHO execution condition, the addition condition of the secondary cell, or the addition of the primary and secondary cells. condition. The method of claim 23, wherein the cell information comprises at least one of the following: The cell radio network temporary identifier C-RNTI allocated by the cell to the terminal device, the random access channel RACH resource information used to access the cell, the index information corresponding to the cell, the cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, The frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, the radio link control RLC layer configuration parameters corresponding to the cell, the packet data convergence protocol PDCP layer configuration parameters corresponding to the cell, The service data adaptation protocol SDAP layer configuration parameters corresponding to the cell, and the radio resource control RRC layer configuration parameters corresponding to the cell. The method according to claim 23 or 24, wherein, The condition information includes an event type and a threshold value corresponding to the event type. A configuration method, characterized in that the method comprises: The target access network device receives at least one of the information of the secondary cell corresponding to the target primary cell, the information of the primary and secondary cells corresponding to the target primary cell, and the information of the secondary cell corresponding to the primary and secondary cell sent by the terminal device, The target primary cell satisfies the conditional handover CHO execution condition, and the target access network device is the access network device to which the target primary cell belongs; The target access network device and the access network device to which the primary and secondary cells belong to perform a secondary node addition process. A communication device, characterized in that the device comprises: a transceiver unit, configured to receive first information from the source access network device, where the first information indicates carrier aggregation CA bandwidth band combination information and/or dual-connection DC band combination information supported by at least one candidate cell; a processing unit, configured to select a target primary cell from the at least one candidate cell; The processing unit is further configured to determine, according to the first information, at least one candidate secondary cell and/or at least one candidate primary secondary cell, wherein the at least one candidate secondary cell is combined with a band composed of the target primary cell Belonging to the CA band combination supported by the target primary cell, the band combination formed by the at least one candidate primary and secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell; The transceiver unit is further configured to send the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell to the access network device to which the target primary cell belongs. The apparatus of claim 27, wherein: The at least one candidate secondary cell includes at least one first candidate secondary cell and/or at least one second candidate secondary cell, the at least one first candidate secondary cell is a cell that the terminal device is capable of detecting, and the at least one first candidate secondary cell is a cell capable of being detected by the terminal device. one second candidate secondary cell belongs to the at least one candidate cell; and/or, The at least one candidate primary and secondary cell includes at least one first candidate primary and secondary cell and/or at least one second candidate primary and secondary cell, and the at least one first candidate primary and secondary cell is a cell that the terminal device is capable of detecting , the at least one second candidate primary and secondary cell belongs to the at least one candidate cell. The apparatus of claim 28, wherein: The transceiver unit is further configured to receive second information from the source access network device, where the second information indicates whether two or more of the candidate cells belong to the same access network device; The processing unit is specifically configured to determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell according to the first information and the second information, wherein the at least one candidate secondary cell The band combination formed with the target primary cell belongs to the CA band combination supported by the target primary cell, and the band combination formed by the at least one candidate primary secondary cell and the target primary cell belongs to the DC band supported by the target primary cell In combination, the at least one second candidate secondary cell and the target primary cell belong to the same access network device, and the at least one second candidate primary secondary cell and the target primary cell belong to different access network devices. The device according to any one of claims 27 to 29, characterized in that, The transceiver unit is further configured to receive third information from the source access network device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value; The processing unit is specifically configured to determine the at least one candidate secondary cell and/or the at least one candidate primary secondary cell according to the first information and the third information, wherein the at least one candidate secondary cell The band combination formed with the target primary cell belongs to the CA band combination supported by the target primary cell, and the signal quality of the at least one candidate secondary cell is greater than the first signal quality threshold. The band combination formed by the secondary cell and the target primary cell belongs to the DC band combination supported by the target primary cell, and the signal quality of the at least one candidate primary secondary cell is greater than the second signal quality threshold. The device according to any one of claims 27 to 30, characterized in that, The transceiver unit is further configured to receive the information of at least one secondary cell corresponding to the target primary cell and/or the information of the primary secondary cell corresponding to the target primary cell sent by the target access network device. The network device is the access network device to which the target primary cell belongs. The device according to any one of claims 27 to 31, characterized in that, The transceiver unit is further configured to receive fourth information from the source access network device, where the fourth information indicates cell information of the at least one candidate cell and conditional handover CHO execution condition information of the at least one candidate cell ; The processing unit is specifically configured to select the target primary cell from the at least one candidate cell according to the fourth information, where the target primary cell is a cell that satisfies the CHO execution condition. The apparatus of claim 32, wherein The cell information includes at least one of the following items: a cell wireless network temporary identifier C-RNTI allocated by the cell to the terminal device, random access channel RACH resource information used to access the cell, index information corresponding to the cell, The cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, the frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, and the radio link control RLC layer configuration corresponding to the cell parameters, the configuration parameters of the packet data convergence protocol PDCP layer corresponding to the cell, the configuration parameters of the service data adaptation protocol SDAP layer corresponding to the cell, and the configuration parameters of the radio resource control RRC layer corresponding to the cell. An apparatus according to claim 32 or 33, characterized in that, The CHO execution condition information includes an event type and a threshold value corresponding to the event type. A communication device, characterized in that the device comprises: A processing unit, configured to determine first information, where the first information indicates carrier aggregation CA bandwidth band combination information and/or dual-connectivity DC band combination information supported by at least one candidate cell, and the at least one candidate cell is used for terminal device selection target primary cell; A transceiver unit, configured to send the first information to the terminal device. The apparatus according to claim 35, wherein the CA band combination information is used by the terminal device to determine at least one candidate secondary cell, and the DC band combination information is used by the terminal device to determine at least one candidate primary and secondary cell. The device according to claim 35 or 36, characterized in that, The transceiver unit is further configured to send second information to the terminal device, where the second information indicates whether two or more of the candidate cells belong to the same access network device. The device according to any one of claims 35 to 37, characterized in that, The transceiver unit is further configured to send third information to the terminal device, where the third information indicates the first signal quality threshold value and/or the second signal quality threshold value. The device according to any one of claims 35 to 38, characterized in that, The transceiver unit is further configured to send fourth information to the terminal device, where the fourth information indicates cell information of the at least one candidate cell and condition handover CHO execution condition information of the at least one candidate cell. The apparatus of claim 39, wherein The cell information includes at least one of the following items: a cell wireless network temporary identifier C-RNTI allocated by the cell to the terminal device, random access channel RACH resource information used to access the cell, index information corresponding to the cell, The cell global identifier CGI of the cell, the physical cell identifier PCI of the cell, the frequency information corresponding to the cell, the physical layer configuration parameters corresponding to the cell, the media access control MAC layer configuration parameters corresponding to the cell, and the radio link control RLC layer configuration corresponding to the cell parameters, the configuration parameters of the packet data convergence protocol PDCP layer corresponding to the cell, the configuration parameters of the service data adaptation protocol SDAP layer corresponding to the cell, and the configuration parameters of the radio resource control RRC layer corresponding to the cell. The device according to claim 39 or 40, characterized in that, The CHO execution condition information includes an event type and a threshold value corresponding to the event type. A communication device, characterized in that the device comprises: A transceiver unit, configured to receive the information of at least one candidate secondary cell and/or the information of at least one candidate primary and secondary cell sent by the terminal equipment, the communication device is the access network device to which the target primary cell that satisfies the conditional handover CHO execution condition belongs ; A processing unit, configured to determine at least one secondary cell corresponding to the target primary cell and/or corresponding to the target primary cell according to the information of the at least one candidate secondary cell and/or the information of the at least one candidate primary secondary cell primary and secondary districts. The apparatus of claim 42, wherein The transceiver unit is further configured to send the information of the at least one secondary cell and/or the information of the primary and secondary cells to the terminal device. An apparatus according to claim 42 or 43, characterized in that, The processing unit and the sending unit are further configured to perform a secondary node adding process with the access network device to which the primary and secondary cells belong when the target access network device determines the primary and secondary cells. A communication device, characterized by comprising means for performing the method of any one of claims 19 to 26. A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being configured to receive signals from other communication devices other than the communication device and transmit to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 26 by means of a logic circuit or executing code instructions. A chip, characterized in that it includes a processor, the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the chip executes The communication method according to any one of claims 1 to 26. A computer-readable storage medium, characterized in that, a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, any one of claims 1 to 26 is implemented. Methods.

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