WO2022061619A1

WO2022061619A1 - Parameter indication method and communication apparatus

Info

Publication number: WO2022061619A1
Application number: PCT/CN2020/117231
Authority: WO
Inventors: 朱鹏; 唐珣; 赵倩倩
Original assignee: 华为技术有限公司
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-03-31
Also published as: CN116134889A

Abstract

Disclosed in the embodiments of the present application are a parameter indication method and a communication apparatus, wherein same relate to the field of communications, and can prevent a dual active protocol stack (DAPS) handover failure to a certain extent. The method comprises: a first access network device determining, from capability parameters of a DAPS supported by a terminal, a capability parameter for a first cell, the first cell being a source cell used by the terminal for performing a DAPS handover, and the first access network device being an access network device corresponding to the first cell; and the first access network device sending first information to a second access network device, the first information being used for indicating the capability parameter for the first cell, and the second access network device being an access network device corresponding to a destination cell used by the terminal for performing a DAPS handover.

Description

A kind of parameter indication method and communication device

technical field

The embodiments of the present application relate to the field of communication, and in particular, to a parameter indication method and a communication device.

Background technique

The R16 version of the 5th-generation (5G) standard introduces the concept of dual active protocol stack (DAPS) switching. DAPS handover means that the user equipment (UE) maintains a simultaneous connection with the source cell and the target cell to be handed over during the handover process from the source cell to the target cell, and releases it after the link with the target cell is successfully established. link to the source cell. Through DAPS handover, the interruption time caused by the UE handover process can be reduced, and the reliability of the UE handover can be improved.

The DAPS handover is initiated by the source base station (that is, the base station corresponding to the source cell), and before initiating the DAPS handover, the source base station selects the appropriate UE capability according to the DAPS capability information reported by the UE to complete the configuration of the UE in the source cell. The source base station can also send the UE's configuration (source config) and the DAPS capability information of the UE to the target base station (that is, the base station corresponding to the target cell), and the target base station can complete the configuration of the UE in the target cell according to the DAPS capability information of the UE.

The UE capability selected by the target base station may not match the UE capability selected by the source base station, so that the UE cannot support the DAPS handover and the handover fails.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a parameter indication method and a communication device, which can avoid failure of DAPS handover to a certain extent.

A first aspect provides a parameter indication method, including: a first access network device determines a capability parameter for a first cell from a dual active protocol stack DAPS capability parameter supported by a terminal, and the first cell performs DAPS handover for the terminal The first access network device is the access network device corresponding to the first cell; the first access network device sends first information to the second access network device, and the first information is used to indicate that the first cell is used for the first cell. The second access network device is the access network device corresponding to the destination cell where the terminal performs DAPS handover.

In the method provided in this application, the source base station (for example, the first access network device) for the UE to perform the DAPS handover may indicate to the target base station (for example, the second access network device) the source cell (for example, the second access network device) selected by the source base station for the source cell (for example, The capability parameters of the first cell), so that the target base station can determine the matching capability parameters according to the instructions of the source base station, ensure that the source base station and the target base station maintain the same behavior in selecting the UE capability parameters, and avoid the capability parameters used for the source cell and the use of the UE. The capability parameters of the target cell do not match, so that the problem of handover failure caused by this can be avoided.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first information includes at least one of the following: information on the first frequency band combination, information on the first frequency band, information on the first capability parameter set, information on capability parameters of the first cell; wherein the first frequency band is the frequency band corresponding to the first cell, the first frequency band combination is the frequency band combination corresponding to the first frequency band, and the first capability parameter set is the capability parameter set of the first frequency band.

The present application also provides a specific implementation of the first information. Specifically, the first information may indicate a frequency band combination (BandCombination) selected by the source base station, or a frequency band (Band) selected by the source base station, or a featureset selected by the source base station (ie, the first capability parameter set), or the information of the capability parameter of the carrier used for the first cell (that is, the information of the capability information used for the first cell).

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the information of the first frequency band combination is a plurality of the first frequency band combination supported by the terminal. The index of the frequency band combination, the information of the first frequency band is the index of the first frequency band in the first frequency band combination, and the information of the first capability parameter set is the corresponding information of the first capability parameter set in the first frequency band Indexes in a plurality of capability parameter sets, and the information of the capability parameter for the first cell is the index of the capability parameter for the first cell in the first capability parameter set.

In a specific implementation, the first information may include an index on the selection path for the capability parameter of the first cell, so that the second access network device can determine the capability parameter for the first cell according to the index in the first information, The target cell is thus configured by selecting capability parameters that match the capability parameters used for the first cell.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the capability parameter for the first cell includes an uplink capability parameter for the first cell and/or an Downlink capability parameters of the first cell.

In this application, the source base station can select the capability parameter for uplink and the capability parameter for downlink when selecting the capability parameter for the first cell, and supports the UE to maintain connection with the source cell during the DAPS handover process. In the scenario where the source base station selects the uplink capability parameter and the downlink capability parameter correspondingly, that is, the uplink capability parameter and the downlink capability parameter for the source cell correspond to the same carrier, the uplink capability parameter for the first cell or the downlink capability parameter for the first cell may only be indicated. Downlink capability parameters of a cell. When the uplink capability parameter and the downlink capability parameter for the source cell correspond to different carriers, the uplink capability parameter for the first cell and the downlink capability parameter for the first cell are indicated.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the index of the capability parameter for the first cell in the first capability parameter set includes the The carrier index of the uplink capability parameter for the first cell in the uplink capability parameter corresponding to the first capability parameter set and/or the downlink capability parameter for the first cell is in the first capability parameter set. The carrier index in the downlink capability parameter corresponding to the parameter set.

In this application, the index of the uplink capability parameter and the downlink capability parameter may be indicated, so that the target base station determines the uplink capability parameter and the downlink capability parameter for the source base station.

With reference to the first aspect or any possible implementation manner of the above first aspect, in a fifth possible implementation manner of the first aspect, the first information is carried in a handover request message.

This application provides a specific implementation of sending the first information.

With reference to the first aspect or any possible implementation manner of the above first aspect, in a sixth possible implementation manner of the first aspect, the first information is carried in the handover request message, including: the handover request message includes handover preparation information , the handover preparation information includes the first information.

In a second aspect, a parameter indication method is provided, including: a second access network device receiving first information from a first access network device, where the first information is used to indicate a capability parameter for a first cell, and the first cell For the source cell where the terminal performs the DAPS handover of the dual active protocol stack, the first access network device is the access network device corresponding to the first cell; the second access network device determines the capability parameter for the second cell according to the first information, The capability parameter used for the second cell belongs to the same capability parameter set as the capability parameter used for the first cell, or the information of the capability parameter set corresponding to the capability parameter used for the second cell corresponds to the capability parameter used for the second cell The information of the capability parameter set is the same, and the second access network device is the access network device corresponding to the second cell.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the first information includes at least one of the following: information on the first frequency band combination, information on the first frequency band, information on the first capability parameter set, information on capability parameters of the first cell; wherein the first frequency band is the frequency band corresponding to the first cell, the first frequency band combination is the frequency band combination corresponding to the first frequency band, and the first capability parameter set is the capability parameter set of the first frequency band.

With reference to the second aspect or any possible implementation manner of the above second aspect, in a second possible implementation manner of the second aspect, the information of the first frequency band combination is that the first frequency band combination is in the The index of multiple frequency band combinations supported by the terminal, the information of the first frequency band is the index of the first frequency band in the first frequency band combination, and the information of the first capability parameter set is that the first capability parameter set is in Indexes in multiple capability parameter sets corresponding to the first frequency band, and the capability parameter information for the first cell is an index of the capability parameter for the first cell in the first capability parameter set.

With reference to the second aspect or any possible implementation manner of the above second aspect, in a third possible implementation manner of the second aspect, the capability parameter for the first cell includes an uplink capability parameter for the first cell and/or downlink capability parameters for the first cell.

With reference to the second aspect or any possible implementation manner of the above second aspect, in a fourth possible implementation manner of the second aspect, the capability parameter for the first cell is in the first capability parameter set The index includes the carrier index of the uplink capability parameter for the first cell in the uplink capability parameter corresponding to the first capability parameter set and/or the downlink capability parameter for the first cell in the The carrier index in the downlink capability parameter corresponding to the first capability parameter set.

With reference to the second aspect or any possible implementation manner of the above second aspect, in a fifth possible implementation manner of the second aspect, the first information is carried in a handover request message.

With reference to the second aspect or any possible implementation manner of the above second aspect, in a sixth possible implementation manner of the second aspect, the first information is carried in the handover request message, including: the handover request message includes handover preparation information , the handover preparation information includes the first information.

In a third aspect, a communication apparatus is provided, where the communication apparatus is a first access network device or a component in the first access network device. The communication device includes: a processing unit configured to determine a capability parameter for a first cell from the dual-active protocol stack DAPS capability parameter supported by the terminal, where the first cell is a source cell for the terminal to perform DAPS handover, and the first access network equipment is the access network device corresponding to the first cell; the communication unit is configured to send first information to the second access network device, where the first information is used to indicate the capability parameter for the first cell, and the second access network device is Access network equipment corresponding to the destination cell where the terminal performs DAPS handover.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the first information includes at least one of the following: information on the first frequency band combination, information on the first frequency band, information on the first capability parameter set, information on capability parameters of the first cell; wherein the first frequency band is the frequency band corresponding to the first cell, the first frequency band combination is the frequency band combination corresponding to the first frequency band, and the first capability parameter set is the capability parameter set of the first frequency band.

With reference to the third aspect or any possible implementation manner of the above third aspect, in a second possible implementation manner of the third aspect, the information of the first frequency band combination is that the first frequency band combination is in the The index of multiple frequency band combinations supported by the terminal, the information of the first frequency band is the index of the first frequency band in the first frequency band combination, and the information of the first capability parameter set is that the first capability parameter set is in Indexes in multiple capability parameter sets corresponding to the first frequency band, and the capability parameter information for the first cell is an index of the capability parameter for the first cell in the first capability parameter set.

With reference to the third aspect or any possible implementation manner of the above third aspect, in a third possible implementation manner of the third aspect, the capability parameter for the first cell includes an uplink capability parameter for the first cell and/or downlink capability parameters for the first cell.

With reference to the third aspect or any possible implementation manner of the above third aspect, in a fourth possible implementation manner of the third aspect, the capability parameter for the first cell is in the first capability parameter set The index includes the carrier index of the uplink capability parameter for the first cell in the uplink capability parameter corresponding to the first capability parameter set and/or the downlink capability parameter for the first cell in the The carrier index in the downlink capability parameter corresponding to the first capability parameter set.

With reference to the third aspect or any possible implementation manner of the above third aspect, in a fifth possible implementation manner of the third aspect, the first information is carried in the handover request message.

With reference to the third aspect or any possible implementation manner of the above third aspect, in a sixth possible implementation manner of the third aspect, the first information is carried in the handover request message, including: the handover request message includes handover preparation information , the handover preparation information includes the first information.

In a fourth aspect, a communication apparatus is provided, where the communication apparatus is a second access network device or a component in the second access network device. The communication device includes: a communication unit configured to receive first information from a first access network device, where the first information is used to indicate a capability parameter for a first cell, where the first cell is used for the terminal to perform dual-active protocol stack DAPS handover The source cell, the first access network device is the access network device corresponding to the first cell; the processing unit is configured to determine the capability parameter for the second cell according to the first information, and the capability parameter for the second cell is the same as the capability parameter for the second cell. The capability parameters of the first cell belong to the same capability parameter set, or the information of the capability parameter set corresponding to the capability parameters of the second cell is the same as the information of the capability parameter set corresponding to the capability parameters of the second cell. The network access device is an access network device corresponding to the second cell.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the first information includes at least one of the following: information of the first frequency band combination, information of the first frequency band, information of the first capability parameter set, information for Information about capability parameters of the first cell; wherein the first frequency band is the frequency band corresponding to the first cell, the first frequency band combination is the frequency band combination corresponding to the first frequency band, and the first capability parameter set is the capability parameter set of the first frequency band.

In combination with the fourth aspect or any possible implementation manner of the above fourth aspect, in a second possible implementation manner of the fourth aspect, the information of the first frequency band combination is that the first frequency band combination is used in the terminal The index of the supported multiple frequency band combinations, the information of the first frequency band is the index of the first frequency band in the first frequency band combination, and the information of the first capability parameter set is the first capability parameter set in the first An index in a plurality of capability parameter sets corresponding to a frequency band, and the information of the capability parameter for the first cell is an index of the capability parameter for the first cell in the first capability parameter set.

In combination with the fourth aspect or any possible implementation manner of the above fourth aspect, in a third possible implementation manner of the fourth aspect, the capability parameter for the first cell includes the uplink capability parameter for the first cell and /or downlink capability parameters for the first cell.

With reference to the fourth aspect or any possible implementation manner of the above fourth aspect, in a fourth possible implementation manner of the fourth aspect, the capability parameter for the first cell is included in the first capability parameter set. The index includes the carrier index of the uplink capability parameter for the first cell in the uplink capability parameter corresponding to the first capability parameter set and/or the downlink capability parameter for the first cell in the The carrier index in the downlink capability parameter corresponding to the first capability parameter set.

In combination with the fourth aspect or any possible implementation manner of the above fourth aspect, in a fifth possible implementation manner of the fourth aspect, the first information is carried in the handover request message.

In combination with the fourth aspect or any possible implementation manner of the above fourth aspect, in a sixth possible implementation manner of the fourth aspect, the first information is carried in the handover request message, including: the handover request message includes handover preparation information, The handover preparation information includes first information.

In a fifth aspect, a communication device is provided, comprising at least one processor and a memory, the at least one processor is coupled with the memory; the memory is used to store a computer program;

The at least one processor is configured to execute a computer program stored in the memory, so that the apparatus executes the method according to any one of the above-mentioned first aspect and the first aspect, or the above-mentioned second aspect and The method described in any implementation manner of the second aspect.

In a sixth aspect, a computer-readable storage medium is provided, comprising: instructions stored in the computer-readable storage medium; when the computer-readable storage medium communicates in the second aspect and any implementation manner of the second aspect When running on the device, the communication device is caused to execute the communication method described in the first aspect and any one of the implementations of the first aspect, or the communication device is caused to execute the second aspect and any one of the implementations of the second aspect. method.

A seventh aspect provides a wireless communication device, the communication device includes a processor, for example, applied to a communication device, for implementing the method described in the first aspect and any one of the implementation manners of the first aspect, the communication device The device may be, for example, a system-on-chip. In a feasible implementation manner, the chip system further includes a memory, and the memory is used for storing necessary program instructions and data to implement the functions of the method in the first aspect.

The chip system in the above aspects may be a system on chip (system on chip, SOC), or a baseband chip, etc., where the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, an interface module, and the like.

In an eighth aspect, a wireless communication device is provided, the communication device includes a processor, for example, applied in a communication device, for implementing the method described in the second aspect and any one of the implementation manners of the second aspect, the communication device The device may be, for example, a system-on-chip. In a feasible implementation manner, the chip system further includes a memory, and the memory is used for storing necessary program instructions and data to implement the functions of the method in the first aspect.

In a ninth aspect, a computer program product is provided, the computer program product includes instructions, when the instructions are executed, the communication method according to the above-mentioned first aspect and any one of the implementation manners of the first aspect is executed, Or cause the method described in the second aspect and any one of the implementation manners of the second aspect to be executed.

In a tenth aspect, a chip is provided, the chip includes a processor and an interface circuit, the interface circuit is coupled to the processor, and the processor is configured to run a computer program or instruction, so that the above-mentioned first aspect and the third In one aspect, the communication method described in any one of the implementations is performed, or the method described in the second aspect and any one of the implementations of the second aspect is performed.

An eleventh aspect provides a communication system, where the communication system includes the access network device described in any one of the foregoing implementations, the access network device described in any of the foregoing implementations, and a terminal.

Description of drawings

FIG. 1 is an architectural diagram of a communication system provided by an embodiment of the present application;

2 is a schematic diagram of DAPS handover provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of capability information provided by an embodiment of the present application;

FIG. 4a is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 4b is another schematic structural diagram of a communication device provided by an embodiment of the present application;

5 is a schematic flowchart of a parameter indication method provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a capability parameter selection path provided by an embodiment of the present application;

7 to 8 are another structural block diagram of a communication apparatus provided by an embodiment of the present application.

detailed description

The methods provided in the embodiments of the present application are applicable to the communication system shown in FIG. 1 . As shown in FIG. 1 , the communication system may include: a terminal 10 and a plurality of network devices 20 .

The network device may also be referred to as a radio access network device or a next-generation radio access network device. The terminal 10 can communicate with the network device 20 . The network device 20 can provide the terminal 10 with functional services such as radio resource management, quality of service management, data encryption and compression. Different network devices 20 can communicate through the Xn interface.

The terminal 10 is located within the coverage of one or more cells (carriers) provided by the network device 20, and there may be one or more cells serving the terminal. When there are multiple serving cells for the terminal, the terminal may work in a CA, or dual connectivity (DC), or coordinated multipoint transmission mode.

Optionally, the communication system may further include a core network device (not shown in the figure), and communication between the core network device and the network device 20 may be performed through a next generation (next generation, NG) interface.

Optionally, the communication system can be a universal mobile telecommunications system (UMTS), a code division multiple access (code division multiple access, CDMA) system, a wireless local area network (wireless local area network, WLAN), a broadband code division Multiple access (wideband code division multiple access, WCDMA) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, universal mobile telecommunication system (universal mobile telecommunication system, UMTS) , fifth-generation mobile communication technology (fifth-generation, 5G) communication systems, and other wireless communication systems using orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) technology, etc. No restrictions apply.

Optionally, the terminal 10 in the communication system may also be referred to as a UE, a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT) or the like. Terminal 10 may be a device that provides voice and/or data connectivity to a user, for example, may be a mobile phone ("cellular" phone), cell phone, computer, cordless phone, session initiation protocol (SIP) phone, wireless Wireless local loop (WLL) stations, personal digital assistants (PDAs), laptop computers, handheld communication devices, handheld computing devices, satellite wireless devices, wireless modem cards, television set-top boxes (set-top boxes) top box, STB), customer premise equipment (CPE), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, etc.) , train, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), smart home equipment (for example, refrigerators, TVs, air conditioners, Electric meters, etc.), intelligent robots, workshop equipment, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation safety ), wireless terminals in smart cities, or wireless terminals in smart homes, flying equipment (eg, smart robots, hot air balloons, drones, airplanes), and For other devices that communicate on the wireless system, the present application also does not limit the specific expression form of the terminal 310 .

In some embodiments, the network device 20 may be a next generation node B (gNB), an evolved node B (evolved Node B, eNB), a next generation evolved node B (ng-eNB) , Transmission Reception Point (TRP), Radio Network Controller (RNC), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (such as , home evolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), centralized unit (central unit, CU) ), distributed unit (distributed unit, DU), centralized unit-control plane (central unit-control plane, CU-CP), centralized unit-user plane (central unit-user plane, CU-UP), etc.

The gNB can provide the terminal 10 with protocols and functions of the control plane and/or the user plane of the new radio (NR), and access to the 5G core network (5th generation core, 5GC).

The ng-eNB may provide the terminal 10 with the protocols and functions of the control plane and/or the user plane of the evolved universal terrestrial radio access (E-UTRA), and access to the 5GC.

The CU mainly includes the RRC layer of the gNB, the service data adaptation protocol (SDAP) layer and the packet data convergence protocol (PDCP) layer, or the RRC layer and the PDCP layer of the ng-eNB.

The DU mainly includes the radio link control (RLC) layer, medium access control (MAC) layer and physical layer of the gNB or ng-eNB.

CU-CP mainly includes the RRC layer in the gNB-CU or ng-eNB-CU, and the control plane in the PDCP layer.

CU-UP mainly includes SDAP layer in gNB-CU or ng-eNB-CU, and user plane in PDCP layer.

It can be understood that the foregoing communication system shown in FIG. 1 is only for illustrating the technical solutions of the embodiments of the present application more clearly, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. For example, the communication system may also include other devices, such as network control devices. The network control device may be an operation management and maintenance (operation administration and maintenance, OAM) system, also called a network management system. The network control device can manage the aforementioned network device 20 .

In addition, those skilled in the art know that, with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The R16 version of the 5th-generation (5G) standard introduces the concept of dual active protocol stack (DAPS) switching. DAPS handover means that the user equipment (UE) maintains a simultaneous connection with the source cell and the target cell to be handed over during the handover process from the source cell to the target cell, and releases it after the link with the target cell is successfully established. link to the source cell.

FIG. 2 is a schematic diagram of DAPS handover. As shown in Figure 2, before the DAPS handover, the UE communicates with the source cell link. During the DAPS handover process, the UE will maintain a simultaneous connection with the source cell and the target cell, that is, the UE will maintain link communication with the source cell during the process of accessing the target cell. After the UE successfully accesses the target cell and the link with the target cell is successfully established, that is, after the DAPS handover is completed, the UE will release the link with the source cell. Through DAPS handover, the interruption time caused by the UE handover process can be reduced, and the reliability of the UE handover can be improved.

It should be noted that the source cell and the target cell where the UE performs the DAPS handover may be the same frequency cell, that is, the source cell and the target cell correspond to the same frequency band (band). Of course, the source cell and the target cell may also be inter-frequency cells, that is, the source cell and the target cell correspond to different frequency bands (bands).

Before the source base station (the base station corresponding to the source cell) initiates the DAPS handover, a UE capability inquiry process may be initiated, and the UE may report the DAPS capability supported by the UE to the source base station.

The capability information reported by the UE will be described below with reference to FIG. 3 . FIG. 3 shows a schematic diagram of capability information provided by an embodiment of the present application. Taking the terminal capability information as "UECapabilityInformation" as an example, "UECapability Information" includes "Phy-Parameters", RF-Parameters", "PDCP-Parameters", "RLC-Parameters", "MAC-Parameters", etc.

Among them, the "Phy-Parameters" field contains the physical (physics) parameters of the UE; the "RF-Parameters" field contains the radio frequency (RF) parameters of the UE; the "PDCP-Parameters" field contains the UE's radio frequency (RF) parameters. Packet Data Convergence Protocol (PDCP) parameters; the "RLC-Parameters" field contains the UE's radio link control (RLC) parameters; the "MAC-Parameters" field contains the UE's media access Control (medium access control, MAC) parameters.

The "RF-Parameters" field may include a "supportBandCombinationList" field, which may include multiple BandCombination fields, which respectively indicate one BandCombination supported by the UE. The value of the Band Combination field can be the index of BandCombination in supportBandCombinationList.

The BandCombination field may include a Bandlist field, a "featureSetCombinationDAPS" field. The Bandlist field indicates a plurality of Bands included in the BandCombination corresponding to the Bandlist field, for example, Band1, Band2, and so on. The "featureSetCombinationDAPS" field indicates a featureSetCombination, and the value of this field can be the index of featureSetCombination in featureSetCombinationlist(feature SetCombinations).

The aforementioned featureSetCombination may be referred to as a band combination level capability parameter (featureSetBandCombination), and the band combination level capability parameter set is applicable to the band combination corresponding to the capability parameter set. 3, the UE supports two frequency band combinations, namely BandCombination1 and BandCombination2, the "featureSetCombinationDAPS" field included in BandCombination1 points to the capability parameter set of a frequency band combination level, and the "featureSetCombinationDAPS" field included in BandCombination2 points to a frequency band combination level. capability parameter set.

The capability parameter set at the frequency band combination level includes one or more capability parameter sets at the frequency band level (featureSetPerBand), and the capability parameter set at the frequency band level is applicable to the frequency band corresponding to the capability parameter set. For example, referring to FIG. 3 , BandCombination1 includes Band1 and Band2. The capability parameter set corresponding to BandCombination1 may include the capability parameter set corresponding to Band1 and the capability parameter set corresponding to Band2. The capability parameter set corresponding to Band1 and the capability parameter set corresponding to Band2 are both band-level capability parameter sets. The band-level capability parameter set may be indicated by the "featureSetPerBand" field included in the "featureSetCombination" field. The value of the "featureSetPer Band" field can be the information of the band, for example, the information of the band can be the index of the band in the corresponding band combination.

The capability parameter set at the frequency band level includes one or more different capability parameter sets (featureSet). For example, referring to FIG. 3 , the capability parameter set corresponding to Band1 includes featureSet1 and featureSet2. featureSet1 and featureSet2 are two different capability parameter sets applicable to Band1. The "featureSet" field under the "featureSetPerBand" field may indicate different capability parameter sets under the same Band. The "featureSet" field can point to the frequency band-level uplink capability parameter and the frequency band-level downlink capability parameter, and the value of the "featureSet" field includes "downlink ID+uplink ID".

The featureSet includes uplink capability parameters and downlink capability parameters. The uplink capability parameter is indicated by the "featureSetuplink" field under the "featureSet" field, and the uplink capability parameter includes capability parameters of each uplink carrier unit (component carrier, CC) supported by the UE in the frequency band corresponding to the featureSet. The downlink capability parameter is indicated by the "featureSetdownlink" field under the "featureSet" field, and the downlink capability parameter includes the capability parameter of each downlink CC supported by the UE in the frequency band corresponding to the featureSet. Illustratively, referring to FIG. 3 , featureSet1 includes a "featureSetdownlink" field and a "featureSetuplink" field.

The uplink capability parameter includes a carrier-level uplink capability parameter, and the downlink capability parameter includes a carrier-level downlink capability parameter. For example, referring to FIG. 3 , the featureSet1 field includes a "featureSetdownlink" field and a "feature Setuplink" field. The value of the featureSet1 field includes the downlink ID and uplink ID, the value of the "feature Setdownlink" field includes the downlink ID of CC1 and the downlink ID of CC2, and the value of the "featureSetuplink" field includes the uplink ID of CC1 and the uplink ID of CC2.

The "featureSetuplink" field indicates the uplink capability parameter of CC1 included in Band1 and the uplink capability parameter of CC2 included in Band1, wherein the "featureSetuplinkPerCC1" field indicates the carrier-level uplink capability parameter, that is, indicates the uplink capability parameter applicable to CC1, "featureSetuplinkPerCC2" The field indicates the uplink capability parameter of the carrier level, that is, the uplink capability parameter applicable to CC2; the "featureSetdownlink" field indicates the downlink capability parameter of CC1 included in Band1 and the downlink capability parameter of CC2 included in Band1, wherein the "featureSetdownlinkPerCC1" field indicates the carrier The downlink capability parameter of the carrier level indicates the downlink capability parameter applicable to CC1, and the "featureSetdownlinkPerCC2" field indicates the downlink capability parameter of the carrier level, that is, the downlink capability parameter applicable to CC2.

In a possible implementation manner, the uplink capability parameter or the downlink capability parameter may be the bandwidth of the carrier, the subcarrier spacing, and the like.

It should be noted that the information included in the "featureSetCombinationDAPS" field and its subordinate fields is not limited to the foregoing, and may also include other information, which is not limited in this embodiment of the present application.

After receiving the capability information reported by the UE, the source base station actively initiates a DAPS handover if it determines that the UE meets the DAPS handover condition. Before initiating a DAPS handover, the source base station sends the source cell configuration information (source config) and the DAPS capability information reported by the UE to the target base station. The source base station can also complete the configuration of the source cell according to the DAPS capability information of the UE, that is, select capability parameters for the source cell from the DAPS capability information of the UE, such as subcarrier spacing and carrier bandwidth supported by the UE.

After the target base station receives the DAPS capability information from the source base station, the target base station can complete the configuration of the UE in the target cell according to the DAPS capability information of the UE, that is, select the capability parameters for the target cell from the DAPS capability information of the UE, for example, the UE supports subcarrier spacing, carrier bandwidth, etc.

The UE capability selected by the target base station may not match the UE capability selected by the source base station, so that the UE cannot support the DAPS handover and the handover fails. For example, the capability parameters for the source cell selected by the source base station and the capability parameters for the target cell selected by the target base station do not match, so that the UE cannot support this DAPS handover.

The embodiment of the present application provides a parameter indication method, in which the source base station can indicate to the target base station the capability parameters selected by the source base station for the source cell, so that the target base station can determine the matching capability parameters according to the indication of the source base station, so as to ensure that the source base station, The target base station maintains the same behavior in selecting UE capability parameters to avoid mismatch between the capability parameters used for the source cell and the capability parameters used for the target cell, thereby avoiding the problem of handover failure caused by this.

It should be noted that, in the description of this application, the words "first", "second" and the like are only used to distinguish the description, and are not used to specifically limit a certain feature. In the description of the embodiments of the present application, "and/or" describes the association relationship of the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B may indicate that A exists alone, A and B exist simultaneously, and a single relationship exists. There are three cases of B. The character "/" generally indicates that the associated objects are an "or" relationship. In this application, at least one refers to one or more; multiple refers to two or more.

The terminal described in the embodiments of the present application may be implemented by the communication device 410 in FIG. 4a. FIG. 4a is a schematic diagram of a hardware structure of a communication apparatus 410 provided by an embodiment of the present application. The communication apparatus 410 includes a processor 4101 and at least one communication interface (in FIG. 4a, it is only an example to include the communication interface 4103 for illustration), and optionally, also includes a memory 4102. The processor 4101, the memory 4102 and the communication interface 4103 are connected to each other.

The processor 4101 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors used to control the execution of the program of the present application. integrated circuit.

Communication interface 4103, using any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN) Wait.

Memory 4102 may be read-only memory (ROM) or other type of static storage device that can store static information and instructions, random access memory (RAM), or other type of static storage device that can store information and instructions It can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, CD-ROM storage (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or capable of carrying or storing desired program code in the form of instructions or data structures and capable of being executed by a computer Access any other medium without limitation. The memory can exist independently or be connected to the processor. The memory can also be integrated with the processor.

The memory 4102 is used for storing computer-executed instructions for executing the solution of the present application, and the execution is controlled by the processor 4101 . The processor 4101 is configured to execute the computer-executed instructions stored in the memory 4102, thereby implementing the intent processing method provided by the following embodiments of the present application.

Optionally, the computer-executed instructions in the embodiment of the present application may also be referred to as application code, which is not specifically limited in the embodiment of the present application.

In a specific implementation, as an embodiment, the processor 4101 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 4a.

In a specific implementation, as an embodiment, the communication apparatus 410 may include multiple processors, for example, the processor 4101 and the processor 4106 in FIG. 4a. Each of these processors can be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (eg, computer program instructions).

In a specific implementation, as an embodiment, the communication apparatus 410 may further include an output device 4104 and an input device 4105 . The output device 4104 is in communication with the processor 4101 and can display information in a variety of ways. For example, the output device 4104 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait. Input device 4105 is in communication with processor 4101 and can receive user input in a variety of ways. For example, the input device 4105 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.

The above-mentioned communication apparatus 410 may be a general-purpose device or a dedicated device. In a specific implementation, the communication device 410 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in FIG. 4a. equipment. This embodiment of the present application does not limit the type of the communication device 410 .

It should be noted that the communication device 410 may be a complete terminal, may also be a functional component or component that implements the terminal, or may be a communication chip, such as a baseband chip. When the communication device 410 is a complete terminal, the communication interface may be a radio frequency module. When the communication device 410 is a communication chip, the communication interface 4103 may be an input/output interface circuit of the chip, and the input/output interface circuit is used to read in and output baseband signals.

FIG. 4b is a schematic structural diagram of a communication device. The communication apparatus 420 may be the network device described in this embodiment of the present application, for example, AMF or SMF.

The communication device includes at least one processor 4201 , at least one transceiver 4203 , at least one network interface 4204 and one or more antennas 4205 . Optionally, at least one memory 4202 is also included. The processor 4201, the memory 4202, the transceiver 4203 and the network interface 4204 are connected, for example, through a bus. The antenna 4205 is connected to the transceiver 4203. The network interface 4204 is used for the communication device to be connected with other communication devices through a communication link, for example, the communication device is connected to the core network element through the S1 interface. In this embodiment of the present application, the connection may include various types of interfaces, transmission lines, or buses, which are not limited in this embodiment.

The processor in this embodiment of the present application, such as the processor 4201, may include at least one of the following types: a general-purpose central processing unit (Central Processing Unit, CPU), a digital signal processor (Digital Signal Processor, DSP), a microprocessor, Application-Specific Integrated Circuit (ASIC), Microcontroller Unit (MCU), Field Programmable Gate Array (FPGA), or an integrated circuit for implementing logic operations . For example, the processor 4201 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. At least one processor 4201 may be integrated in one chip or located on multiple different chips.

The memory in this embodiment of the present application, such as the memory 4202, may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory, RAM) or other types of dynamic storage devices that can store information and instructions, or electrically erasable programmable read-only memory (Electrically erasable programmable read-only memory, EEPROM). In some scenarios, the memory may also be compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.) , a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.

The memory 4202 may exist independently and be connected to the processor 4201 . Optionally, the memory 4202 can also be integrated with the processor 4201, for example, in one chip. The memory 4202 can store program codes for implementing the technical solutions of the embodiments of the present application, and is controlled and executed by the processor 4201 . For example, the processor 4201 is configured to execute the computer program codes stored in the memory 4202, thereby implementing the technical solutions in the embodiments of the present application.

The transceiver 4203 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 4203 may be connected to the antenna 4205 . Specifically, one or more antennas 4205 can receive radio frequency signals, and the transceiver 4203 can be used to receive the radio frequency signals from the antennas, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and convert the digital baseband signals or digital intermediate frequency signals. The digital intermediate frequency signal is provided to the processor 4201, so that the processor 4201 performs further processing on the digital baseband signal or the digital intermediate frequency signal, such as demodulation processing and decoding processing. In addition, the transceiver 4203 can be used to receive a modulated digital baseband signal or a digital intermediate frequency signal from the processor 4201, and convert the modulated digital baseband signal or digital intermediate frequency signal into a radio frequency signal, and transmit the modulated digital baseband signal or digital intermediate frequency signal to a radio frequency signal, and transmit the modulated digital baseband signal or digital intermediate frequency signal to a radio frequency signal through one or more antennas 4205 The radio frequency signal is transmitted. Specifically, the transceiver 4203 can selectively perform one or more stages of down-mixing processing and analog-to-digital conversion processing on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of precedence is adjustable. The transceiver 4203 can selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or digital intermediate frequency signal to obtain a radio frequency signal. The up-mixing processing and digital-to-analog conversion processing The sequence of s is adjustable. Digital baseband signals and digital intermediate frequency signals can be collectively referred to as digital signals. A transceiver may be referred to as a transceiver circuit, a transceiver unit, a transceiver device, a transmission circuit, a transmission unit, or a transmission device, and the like.

It should be noted that the communication device 420 may be a whole communication device, a component or component that realizes the function of the communication device, or a communication chip. When the communication device 420 is a communication chip, the transceiver 4203 may be an interface circuit of the chip, and the interface circuit is used to read in and output baseband signals.

The embodiment of the present application provides a parameter indication method, as shown in FIG. 5 , the method includes the following steps:

501. The first access network device determines the capability parameter for the first cell from the DAPS capability parameter supported by the terminal.

The first cell is the source cell where the terminal performs DAPS handover, and the first access network device is the access network device corresponding to the first cell, that is, the first cell is the first access network device The serving cell of the network device. The DAPS capability parameter supported by the terminal may be the capability parameter indicated by the "featureSetCombination DAPS" field in the capability information reported by the UE.

In a specific implementation, the first access network device selects carrier-level capability parameters from DAPS capability parameters supported by the terminal, including carrier-level uplink capability parameters and carrier-level downlink capability parameters. The first cell is configured by using the selected carrier-level uplink capability parameter and carrier-level downlink capability parameter, so as to maintain connection with the first cell during the DAPS handover process.

In a possible implementation, when the UE supports multiple frequency band combinations (BandCombination), in step 501, the first access network device selects a frequency band combination from the multiple frequency band groups supported by the UE, for example, Band Combination1 is selected. Subsequently, the capability parameter for the first cell is selected from the capability parameter set at the frequency band combination level corresponding to the BandCombination. Of course, if the UE supports only one frequency band combination, the capability parameter set for the first cell is selected from the capability parameter set of the frequency band combination level corresponding to the frequency band combination.

When the frequency band combination supported by the UE includes multiple frequency bands (Bands), after determining a capability parameter set of a band combination level, the first access network device first selects a band level capability parameter set from the capability parameter set of the band combination level, Then, the capability parameter for the first cell is selected from the capability parameter set at the frequency band level. Of course, if the frequency band combination supported by the UE only includes one frequency band, the capability parameter for the first cell is selected from the capability parameter set at the frequency band level corresponding to the frequency band.

For a frequency band in the frequency band combination supported by the UE, it may correspond to one or more different capability parameter sets (featureSets). Select a featureSet from the capability parameter set (featureSet).

A featureSet can have uplink capability parameters and downlink capability parameters. The uplink capability parameter includes one or more sets of different carrier-level uplink capability parameters, from which the first access network device may also select a set of uplink capability parameters, for example, the capability parameter indicated by the "featureSetuplinkPerCC1" field. The downlink capability parameter includes one or more sets of different carrier-level downlink capability parameters, from which the first access network device may also select a set of downlink capability parameters, for example, the capability parameter indicated by the "featureSetdownlinkPerCC1" field.

It should be noted that the uplink capability parameter and downlink capability parameter selected by the first access network device may be bound, that is, the uplink capability parameter and the downlink capability parameter correspond to the same carrier. For example, select the one indicated by the "featureSetuplinkPer CC1" field. Capability parameters, and "featureSetdownlinkPerCC1". Alternatively, select the capability parameter indicated by the "featureSetdownlinkPerCC1" field, and "featureSetuplinkPerCC1". In another possible implementation manner, the uplink capability parameter and the downlink capability parameter selected by the first access network device are not bound, that is, the uplink capability parameter and the downlink capability parameter correspond to different carriers. For example, select the "featureSetuplinkPer CC1" field Indicates the capability parameter, and "featureSetdownlinkPerCC2". Alternatively, select the capability parameter indicated by the "featureSetdownlinkPerCC1" field, and "featureSetuplinkPerCC2". In this embodiment of the present application, the capability parameter used for the first cell includes an uplink capability parameter and a downlink capability parameter selected by the first access network device. For example, the capability parameter indicated by the "featureSetuplinkPerCC1" field and the capability parameter indicated by the "featureSetdownlinkPerCC1" field are included.

502. The first access network device sends first information to the second access network device, where the first information is used to indicate the capability parameter for the first cell.

The second access network device is an access network device corresponding to the target cell where the terminal performs DAPS handover. In this embodiment of the present application, the destination cell where the terminal performs DAPS handover may be referred to as the second cell. The first access network device indicates the configuration of the source cell (that is, the first cell) through the first information, that is, the capability parameter for the first cell, so that the second access network device can select from the capability information of the UE and the first cell. The second cell is configured with the capability parameters that match the capability parameters of the cell, and the mismatch between the capability parameters used for the second cell and the capability parameters used for the first cell can be avoided as much as possible, so as to ensure that the terminal supports the first access network device to initiate DAPS handover to ensure successful DAPS handover.

In a specific implementation, the first information includes at least one of the following: information on the combination of the first frequency band, information on the first frequency band, information on the first capability parameter set, and information on the capability parameter for the first cell; wherein , the first frequency band is the frequency band corresponding to the first cell, the first frequency band combination is the frequency band combination corresponding to the first frequency band, and the first capability parameter set is the capability parameter set of the first frequency band .

In a possible implementation manner, the information of the first frequency band combination is an index of the first frequency band combination in multiple frequency band combinations supported by the terminal, and the information of the first frequency band is that the first frequency band is in The index in the first frequency band combination, the information of the first capability parameter set is the index of the first capability parameter set in multiple capability parameter sets corresponding to the first frequency band, and the information of the capability parameter used for the first cell is The information is the index of the capability parameter for the first cell in the first capability parameter set.

Optionally, the capability parameter for the first cell includes an uplink capability parameter for the first cell and/or a downlink capability parameter for the first cell.

In a possible implementation manner, the index of the capability parameter for the first cell in the first capability parameter set includes the uplink capability parameter for the first cell in the first capability parameter set. The carrier index in the corresponding uplink capability parameter and/or the carrier index in the downlink capability parameter corresponding to the first capability parameter set of the downlink capability parameter for the first cell.

It should be noted that the capability parameter set (featureSet) includes a frequency band-level uplink capability parameter (feature Setuplink) and a frequency band-level downlink capability parameter (featureSetdownlink). According to the carrier index, the carrier-level uplink capability parameter can be determined from the featureSetuplink. The index can determine the downlink capability parameters of the carrier level from the featureSetdown Link.

Several possible implementations of the first information are described in detail below with reference to FIG. 3 , as follows:

First, if the terminal supports multiple frequency band combinations, the first access network device may select one of the frequency band combinations, and may also determine the capability parameter set of the frequency band combination level corresponding to the frequency band combination. In this implementation manner, the first information includes information on the frequency band combination selected by the first access network device, so that the second access network device can determine the frequency band combination selected by the first access network device.

Exemplarily, the first information includes information of the first frequency band combination. For example, the first frequency band combination is BandCom Bination1, and the information of the first frequency band combination may be an index of BandComBination1 in the frequency band combination list (BandCom binationlist). The first frequency band combination is a frequency band combination corresponding to the first frequency band, and the first frequency band is a frequency band corresponding to the first cell. It is assumed that the DAPS capability information of the terminal includes the capability parameter set 1 of the frequency band combination level corresponding to the frequency band combination 1, and the capability parameter set 2 of the frequency band combination level corresponding to the frequency band combination 2. The index of the capability parameter set 1 is 0, and the index of the capability parameter set 2 is 1. If the first access network device selects the capability parameter set 2 of the frequency band combination level corresponding to the frequency band combination 2, the first information includes the capability Index of parameter set 2 (eg 1).

If the DAPS capability information of the terminal only includes the capability parameter set of the frequency band combination level corresponding to one frequency band combination, the first information may not include information indicating the capability parameter level of the frequency band combination level, for example, does not include the information of the first frequency band combination.

Second, if the capability parameter set of the frequency band combination level corresponding to the frequency band combination selected by the first access network device includes a plurality of different frequency band level capability parameter sets, the first access network device can select from multiple different frequency bands. Select a band-level capability parameter set from the capability parameter set at the level. In this implementation manner, the first information includes information on the capability parameter set of the frequency band level selected by the first access network device, so that the second access network device can determine the frequency band level selected by the first access network device. Capability parameter set.

Exemplarily, the first information includes information of the first frequency band. For example, the information of the first frequency band may be an index of the first frequency band, and the index may be a bandlist corresponding to the combination of the first frequency band in the first frequency band. index in . It is assumed that the capability parameter set of the band combination level corresponding to band combination 1 in the DAPS capability information of the terminal includes the band level capability parameter set 11 corresponding to the band 1 (Band1) and the band level capability parameter set 12 corresponding to the band 1. The index of the capability parameter set 11 is 0, and the index of the capability parameter set 12 is 1. If the first access network device selects the capability parameter set 11, the first information includes the index of the capability parameter set 11 (for example, 0).

If the capability parameter set of the frequency band combination level selected by the first access network device only includes the capability parameter set of one frequency band level, the first information may not include the information indicating the capability parameter level of the frequency band level, for example, does not include the first frequency band Information.

Third, if the capability parameter set at the frequency band level selected by the first access network device includes multiple different capability parameter sets (featureSets), the first access network device may select one featureSet from multiple different featureSets. In this implementation manner, the first information includes information about the featureSet selected by the first access network device, so that the second access network device can determine the featureSet selected by the first access network device.

Exemplarily, the first information includes information of a first capability parameter set, where the first capability parameter set is a featureSet corresponding to the first frequency band. For example, the information of the first capability parameter set may be an index (index) of the first capability parameter set, and the index may be an index of the featureSet in multiple featureSet lists (lists) corresponding to the frequency band. It is assumed that the first access network device selects the capability parameter set 11, and the capability parameter set 11 includes featureSet1 and featureSet2. The index of featureSet1 is 0, and the index of featureSet2 is 1. If the first access network device selects featureSet1 corresponding to capability parameter set 11, that is, the first capability parameter set is featureSet1, the first information includes the index of featureSet1 (for example, 0).

If the band-level capability parameter set selected by the first access network device includes only one featureSet, the first information may not include the information indicating the featureSet, for example, does not include the information of the first capability parameter set.

Fourth, the featureSet (ie, the first capability parameter set) selected by the first access network device includes an uplink capability parameter and a downlink capability parameter. If the uplink capability parameter includes multiple sets of capability parameters at different carrier levels, the first access network device may select a set of capability parameters for uplink from multiple sets of capability parameters at different carrier levels, for configuring the first access network device. The uplink carrier corresponding to a cell. In this way, the first information includes the capability parameter of the carrier class selected by the first access network device for uplink, so that the second access network device can determine which set of carrier classes the first access network device has selected. capability parameters.

Exemplarily, the first information includes the information about the capability parameter for the first cell, where the information about the capability parameter for the first cell may be that the capability parameter for the first cell is An index into the capability parameter set. Specifically, the index of the capability parameter for the first cell in the first capability parameter set includes an index of the uplink capability parameter for the first cell in the first capability parameter set and/or an index for The index of the lower capability parameter of the first cell in the first capability parameter set.

In a possible implementation manner, the featureSet1 in the capability parameter set 11 selected by the first access network device includes an uplink capability parameter (featureSetuplink) and a downlink capability parameter (featureSetdownlink), wherein the featureSetuplink includes a set of "featureSeuplinkperCC1" fields indicated. Capability parameters, the index of this group of capability parameters is 0, the featureSetuplink also includes a group of capability parameters indicated by the "featureSeuplinkperCC2" field, and the index of this group of capability parameters is 1. Assuming that the first access network device selects a set of capability parameters indicated by the "featureSeuplinkperCC1" field, the first information includes an index (eg, 0) of the set of capability parameters indicated by the "featureSeuplinkperCC1" field.

In a possible implementation manner, featureSetuplinkperCC and featureSetdownlinkperCC are numbered sequentially. For example, referring to FIG. 3, carrier indices 0 to 3 indicate featureSetdownlinkperCC1, featureSet downlinkperCC2, featureSetuplinkperCC1, and featureSetuplinkperCC2, respectively. Alternatively, featureSetup linkperCC and featureSetdownlinkperCC are numbered independently. For example, the carrier indices of featureSetdownlinkperCC1 and featureSetdownlinkperCC2 are 0 and 1, respectively, and the carrier indices of featureSetuplinkperCC1 and featureSetup linkperCC2 are 0 and 1, respectively.

Optionally, it is assumed that the uplink capability parameter and the downlink capability parameter selected by the first access network device are bound, for example, the index of a set of capability parameters indicated by the "featureSetuplinkPerCC1" field, and a set of indices indicated by the "featureSetdownlinkPerCC1" field. The indices of the capability parameters can be the same. Exemplarily, the first access network device selects a set of capability parameters indicated by the "featureSetuplinkPerCC1" field, and the first information includes an index (for example, 0) of the set of capability parameters indicated by the "featureSetuplinkPerCC1" field, and the index also points to "featureSetuplinkPerCC1". ” field indicates a set of capability parameters.

Assuming that the uplink capability parameter and the downlink capability parameter selected by the first access network device are not bound, for example, the index of a set of capability parameters indicated by the "featureSetuplinkPerCC1" field and the index of a set of capability parameters indicated by the "featureSetdownlink PerCC1" field are different . For example, the index of a set of capability parameters indicated by the "featureSetuplinkPerCC1" field is 0, the index of a set of capability parameters indicated by the "featureSetuplinkPerCC2" field is 1, the index of a set of capability parameters indicated by the "featureSetdownlinkPerCC1" field is 2, and the index of a set of capability parameters indicated by the "featureSetdownlinkPerCC2" field is 2, and "featureSetdownlinkPerCC2" The index of the set of capability parameters indicated by the field is 3. If the first access network device selects a set of capability parameters indicated by the "featureSetuplinkPerCC1" field and a set of capability parameters indicated by the "featureSetdownlinkPerCC2" field, the first information includes the index of the set of capability parameters indicated by the "featureSetuplinkPerCC1" field (for example, 0 ) and the index (eg, 3) of a set of capability parameters indicated by the "featureSetdownlinkPerCC2" field.

503. The second access network device receives the first information from the first access network device, and determines a capability parameter for the second cell according to the first information.

In the specific implementation, when the DAPS handover initiated by the first access network device this time is an intra-frequency handover, that is, the first cell and the second cell correspond to the same frequency band (band), the second access network device can ensure that the The capability parameter of the second cell and the capability parameter for the first cell correspond to the same capability parameter set (featureSet). For example, the selection path for the capability parameters of the first cell is: capability parameter set 1->capability parameter set 11->featureSet1->(featureSetuplinkperCC1+featureSetdownlinkperCC1), then the selection path for the capability parameters of the second cell is: Capability parameter set 1->capability parameter set 11->featureSet1->(featureSetuplinkperCC2+featureSetdownlinkperCC2).

In the specific implementation, when the DAPS handover initiated by the first access network device this time is the same-frequency handover, that is, the first cell and the second cell correspond to different frequency bands (bands), the second access network device can be used for The information (eg, index) of the capability parameter set (featureSet) corresponding to the capability parameter of the second cell and the capability parameter set (featureSet) corresponding to the capability parameter for the first cell is the same. Exemplarily, the selection path for the capability parameter of the first cell is: capability parameter set 1->capability parameter set 11->featureSet1->(featureSetuplinkperCC1+eatureSetdownlinkperCC1), wherein capability parameter set 1 is the frequency band level corresponding to Band1 Capability parameter set. Then the second access network device can select the capability parameter for the second cell in the featureSet1 corresponding to Band2. Exemplarily, the selection path for the capability parameter of the second cell is: capability parameter set 1->capability parameter set 21->featureSet1->(featureSetuplinkperCC2+featureSetdownlinkperCC2), or, capability parameter set 1->capability parameter set 21- >featureSet1->(featureSetuplinkperCC1+featureSetdownlinkper CC1).

Corresponding to the first possible implementation of the foregoing first information, if the first information includes the information of the first frequency band combination, the second access network device may determine a frequency band combination from multiple frequency band combinations according to the information of the first frequency band combination. The capability parameter set of the frequency band combination level corresponding to the frequency band combination may also be determined, so as to determine the capability parameter selected by the first access network device when configuring the first cell. Exemplarily, the first information includes an index (for example, 0) of the frequency band combination selected by the first access network device in the frequency band combination list, and the second access network device can determine the frequency band combination level 1 (BandCombination1) according to the index, The capability parameter set 1 can also be determined.

Corresponding to the second possible implementation of the foregoing first information, if the first information includes information of the first frequency band, the second access network device can combine the capabilities of the corresponding multiple frequency band levels from the first frequency band according to the information of the first frequency band The parameter set determines the capability parameter set of the frequency band level selected when the first access network device configures the first cell. Exemplarily, the first information includes an index (eg, 0) of the frequency band selected by the first access network device in the frequency band target, and the second access network device may determine the frequency band-level capability parameter set 11 according to the index.

Corresponding to the third possible implementation of the foregoing first information, if the first information includes the information of the first capability parameter set, the second access network device can select from multiple FeatureSets corresponding to the first frequency band according to the information of the first capability parameter set Determine the FeatureSet selected when the first access network device configures the first cell in the . Exemplarily, the first information includes an index (eg, 0) of the FeatureSet selected by the first access network device, indicating that the first access network device has selected the uplink for the first cell from the FeatureSet1 corresponding to the capability parameter set 11 Capability parameters and downlink capability parameters.

In a possible implementation manner, the second access network device may determine the FeatureSet1 corresponding to the capability parameter set 11 according to the index. Further, the second access network device may select the uplink capability parameter and the downlink capability parameter for the second cell in FeatureSet1 corresponding to parameter set 11 (ie, the frequency band-level capability parameter set corresponding to Band1).

Optionally, the second access network device may select the uplink capability parameter and the downlink capability parameter for the second cell in FeatureSet1 corresponding to other frequency bands except the first frequency band. For example, the uplink capability parameter and the downlink capability parameter for the second cell are selected in FeatureSet1 corresponding to the frequency band-level capability parameter set 12 corresponding to Band2.

In a possible implementation manner, the first access network device may send the first information to the second access network device through an inter-station radio resource control (radio resource control, RRC) message. Among them, the inter-station RRC message is the inter-node RRC message. Specifically, the first access network device sends the first information to the second access network device through a handover request message (Handover Request). For example, the first information is carried in a handover request message.

Specifically, the handover request message includes handover preparation information (HandoverPreparationInformation message), and the handover preparation information includes the first information.

In a possible implementation manner, the first access network device may send the first information to the second access network device through the core network. For example, the first access network device sends the Handover Required through the NG interface, where the Handover Required includes the first information.

A possible implementation of the first information is described below with reference to FIG. 6 , where the black arrow indicates the selection path for the capability parameter of the source cell (the source cell of the DAPS handover). Specifically, referring to FIG. 6 , the first information includes the following fields:

1. The first field is used to indicate the frequency band combination selected by the source base station. For example, it may be the Index of the Band Combination selected by the source base station in the BandCombinationList. Referring to FIG. 6 , the first field may be the Index "0" of the BandCombination1 in the BandCombinationList.

2. The second field is used to indicate the capability parameter set at the frequency band level selected by the source base station in the capability parameter set at the frequency band level corresponding to BandCombination1. For example, the second field may be the Index of the Band in the Band Entry selected by the source base station. Referring to FIG. 6 , the second field may be the index "1" of the Band2 in the BandEntry.

3. The third field is used to indicate the FeatureSet selected by the source base station from the multiple FeatureSets corresponding to BandCombination1. For example, the third field may be the Index in the FeatureSetEntry of the FeatureSet corresponding to Band2. Referring to FIG. 6 , the third field may be the index "0" of FeatureSet1 corresponding to Band2.

4. The fourth field is used to indicate the downlink capability parameter selected by the source base station in FeatureSet1 corresponding to Band2. For example, the fourth field may be the index of the downlink capability parameter selected by the source base station in FeatureSet1 corresponding to Band2. For example, the source base station selects the index "0" of "FeatureDownLinkPerCC1" in FeatureSet1 corresponding to Band2.

5. The fifth field is used to indicate the uplink capability parameter selected by the source base station in FeatureSet1 corresponding to Band2. For example, the nth field may be the index of the uplink capability parameter selected by the source base station in FeatureSet1 corresponding to Band2. For example, the source base station selects the index "2" of "FeatureUpLinkPerCC1" in FeatureSet1 corresponding to Band2.

It should be noted that the index of the FeatureSet selected by the target base station and the source base station is the same. Specifically, in the scenario of intra-frequency handover, it may be the same FeatureSet corresponding to the same Band; in the scenario of inter-frequency handover, it may be the FeatureSet with the same index corresponding to different Bands.

In the case where each functional module is divided according to each function, FIG. 7 shows a possible schematic structural diagram of the communication device involved in the above embodiment. The communication apparatus shown in FIG. 7 may be the first access network device or the second access network device described in the embodiment of the present application, or may be the first access network device or the second access network device to implement the above method or, may also be a chip applied to the first access network device or the second access network device. The chip may be a System-On-a-Chip (SOC) or a baseband chip with a communication function, or the like. As shown in FIG. 7 , the communication apparatus includes a processing unit 701 and a communication unit 702 . The processing unit may be one or more processors, and the communication unit may be a transceiver or a communication interface.

The processing unit 701 may be configured to support the communication apparatus to perform the processing actions in the foregoing method embodiments, for example, may be configured to support the first access network device to perform step 501, support the second access network device to perform step 503, and/or use Other procedures for the techniques described herein.

The communication unit 702 is configured to support communication between the communication device and other devices (or devices), for example, support the first access network device to perform step 502 and send the first information to the second access network device; support the second access network device The access network device performs the corresponding receiving process triggered by step 502 to receive the first information from the first access network device, and/or other processes for the techniques described herein.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

As shown in FIG. 8 , the communication apparatus may further include a storage unit 703, and the storage unit 703 is configured to store program codes and/or data of the communication apparatus.

The processing unit 701 may include at least one processor, the communication unit 702 may be a transceiver or a communication interface, and the storage unit 703 may include a memory.

It should be noted that, in each of the above communication device embodiments, each unit may also be called a module, a component, or a circuit, etc. accordingly.

An embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium; the instructions are used to execute the method shown in FIG. 5 .

Embodiments of the present application provide a computer program product including instructions, which, when executed on a communication device, cause the communication device to execute the method shown in FIG. 5 .

A wireless communication device according to an embodiment of the present application includes: an instruction is stored in the wireless communication device; when the wireless communication device runs on the communication device shown in FIG. 4a, FIG. 4b, and FIG. 7 to FIG. The method shown in Figure 5. The wireless communication device may be a chip.

From the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated as required. It is completed by different functional modules, that is, the internal structure of the communication device is divided into different functional modules, so as to complete all or part of the functions described above.

The processors in the embodiments of the present application may include, but are not limited to, at least one of the following: a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a microcontroller (MCU) ), or artificial intelligence processors and other types of computing devices that run software, each computing device may include one or more cores for executing software instructions to perform operations or processing. The processor can be a separate semiconductor chip, or can be integrated with other circuits into a semiconductor chip. For example, it can form a SoC (on-chip) with other circuits (such as codec circuits, hardware acceleration circuits, or various bus and interface circuits). system), or can also be integrated in the ASIC as a built-in processor of an ASIC, and the ASIC integrated with the processor can be packaged separately or can be packaged with other circuits. In addition to a core for executing software instructions to perform operations or processing, the processor may further include necessary hardware accelerators, such as field programmable gate arrays (FPGA), PLDs (Programmable Logic Devices) , or a logic circuit that implements dedicated logic operations.

The memory in this embodiment of the present application may include at least one of the following types: read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (random access memory) , RAM) or other types of dynamic storage devices that can store information and instructions, and can also be electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM). In some scenarios, the memory may also be compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.) , a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.

In this application, "at least one" means one or more. "Plural" 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. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple . In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like are not necessarily different.

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

The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places . 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 above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (which may be a single chip microcomputer, a chip, etc.) or a processor 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: a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk and other mediums 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, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. . Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A parameter indicating method, comprising:

The first access network device determines a capability parameter for a first cell from the dual-active protocol stack DAPS capability parameter supported by the terminal, where the first cell is a source cell for the terminal to perform DAPS handover, and the first access network The network device is an access network device corresponding to the first cell;

The first access network device sends first information to the second access network device, where the first information is used to indicate the capability parameter for the first cell, and the second access network device is the Access network equipment corresponding to the destination cell where the terminal performs DAPS handover.
The method according to claim 1, wherein the first information comprises at least one of the following: information of the first frequency band combination, information of the first frequency band, information of the first capability parameter set, the information used for the first frequency band information about the capability parameters of a cell;

The first frequency band is a frequency band corresponding to the first cell, the first frequency band combination is a frequency band combination corresponding to the first frequency band, and the first capability parameter set is a capability parameter of the first frequency band set.
The method of claim 2, wherein:

The information of the first frequency band combination is the index of the first frequency band combination in the multiple frequency band combinations supported by the terminal, and the information of the first frequency band is the index of the first frequency band in the first frequency band combination, The information of the first capability parameter set is an index of the first capability parameter set in multiple capability parameter sets corresponding to the first frequency band, and the information of the capability parameter for the first cell is the capability parameter for the first cell. The index of the capability parameter of the cell in the first capability parameter set.
The method according to claim 3, wherein the capability parameter for the first cell comprises an uplink capability parameter for the first cell and/or a downlink capability parameter for the first cell.
The method according to claim 4, wherein the index of the capability parameter for the first cell in the first capability parameter set includes the uplink capability parameter for the first cell in the The carrier index in the uplink capability parameter corresponding to the first capability parameter set and/or the carrier index in the downlink capability parameter corresponding to the first capability parameter set of the downlink capability parameter for the first cell.
The method according to any one of claims 1-5, wherein the first information is carried in a handover request message.
The method according to claim 6, wherein the first information is carried in a handover request message, comprising:

The handover request message includes handover preparation information, and the handover preparation information includes the first information.
A parameter indicating method, comprising:

The second access network device receives first information from the first access network device, where the first information is used to indicate a capability parameter for the first cell, where the first cell is where the terminal performs dual active protocol stack DAPS handover a source cell, where the first access network device is an access network device corresponding to the first cell;

The second access network device determines a capability parameter for the second cell according to the first information, where the capability parameter for the second cell and the capability parameter for the first cell belong to the same capability parameter set , or, the information of the capability parameter set corresponding to the capability parameter for the second cell is the same as the information of the capability parameter set corresponding to the capability parameter for the second cell, and the second access network device is the first Access network equipment corresponding to the second cell.
The method according to claim 8, wherein the first information includes at least one of the following: information on the first frequency band combination, information on the first frequency band, information on the first capability parameter set, and the information on the first frequency band combination. information about the capability parameters of a cell;

The first frequency band is a frequency band corresponding to the first cell, the first frequency band combination is a frequency band combination corresponding to the first frequency band, and the first capability parameter set is a capability parameter of the first frequency band set.
The method of claim 9, wherein:

The information of the first frequency band combination is the index of the first frequency band combination in the multiple frequency band combinations supported by the terminal, and the information of the first frequency band is the index of the first frequency band in the first frequency band combination, The information of the first capability parameter set is an index of the first capability parameter set in multiple capability parameter sets corresponding to the first frequency band, and the information of the capability parameter for the first cell is the capability parameter for the first cell. The index of the capability parameter of the cell in the first capability parameter set.
The method according to claim 10, wherein the capability parameter for the first cell comprises an uplink capability parameter for the first cell and/or a downlink capability parameter for the first cell.
The method according to claim 11, wherein the index of the capability parameter for the first cell in the first capability parameter set includes the uplink capability parameter for the first cell in the The carrier index in the uplink capability parameter corresponding to the first capability parameter set and/or the carrier index in the downlink capability parameter corresponding to the first capability parameter set of the downlink capability parameter for the first cell.
The method according to any one of claims 8-12, wherein the first information is carried in a handover request message.
The method according to claim 13, wherein the first information is carried in a handover request message, comprising:

The handover request message includes handover preparation information, and the handover preparation information includes the first information.
A communication device, wherein the communication device is a first access network device, characterized in that it includes:

a processing unit, configured to determine a capability parameter for a first cell from the dual-active protocol stack DAPS capability parameter supported by the terminal, where the first cell is a source cell for the terminal to perform DAPS handover, and the first access network The device is an access network device corresponding to the first cell;

a communication unit, configured to send first information to a second access network device, where the first information is used to indicate the capability parameter for the first cell, and the second access network device performs DAPS for the terminal Access network equipment corresponding to the target cell of the handover.
The device according to claim 15, wherein the first information comprises at least one of the following: information of a first frequency band combination, information of a first frequency band, information of a first capability parameter set, and the information for the first frequency band combination. information about the capability parameters of a cell;

The first frequency band is a frequency band corresponding to the first cell, the first frequency band combination is a frequency band combination corresponding to the first frequency band, and the first capability parameter set is a capability parameter of the first frequency band set.
The apparatus according to claim 16, wherein the information of the first frequency band combination is an index of the first frequency band combination in multiple frequency band combinations supported by the terminal, and the information of the first frequency band is the the index of the first frequency band in the first frequency band combination, the information of the first capability parameter set is the index of the first capability parameter set in multiple capability parameter sets corresponding to the first frequency band, and the information used for the first capability parameter set The information of the capability parameter of the cell is the index of the capability parameter for the first cell in the first capability parameter set.
The apparatus according to claim 17, wherein the capability parameter for the first cell comprises an uplink capability parameter for the first cell and/or a downlink capability parameter for the first cell.
The apparatus according to claim 18, wherein the index of the capability parameter for the first cell in the first capability parameter set includes the uplink capability parameter for the first cell in the The carrier index in the uplink capability parameter corresponding to the first capability parameter set and/or the carrier index in the downlink capability parameter corresponding to the first capability parameter set of the downlink capability parameter for the first cell.
The apparatus according to any one of claims 15-19, wherein the first information is carried in a handover request message.
The apparatus according to claim 20, wherein the first information is carried in a handover request message, comprising:

The handover request message includes handover preparation information, and the handover preparation information includes the first information.
A communication device, wherein the communication device is a second access network device, characterized by comprising:

A communication unit, configured to receive first information from a first access network device, where the first information is used to indicate a capability parameter for a first cell, the first cell being the source for the terminal to perform dual active protocol stack DAPS handover a cell, where the first access network device is an access network device corresponding to the first cell;

a processing unit, configured to determine a capability parameter for the second cell according to the first information, where the capability parameter for the second cell and the capability parameter for the first cell belong to the same capability parameter set, or, The information of the capability parameter set corresponding to the capability parameter for the second cell is the same as the information of the capability parameter set corresponding to the capability parameter for the second cell, and the second access network device corresponds to the second cell access network equipment.
The apparatus according to claim 22, wherein the first information comprises at least one of the following: information on the first frequency band combination, information on the first frequency band, information on the first capability parameter set, and the information on the first frequency band combination. information about the capability parameters of a cell;

The first frequency band is a frequency band corresponding to the first cell, the first frequency band combination is a frequency band combination corresponding to the first frequency band, and the first capability parameter set is a capability parameter of the first frequency band set.
The apparatus according to claim 23, wherein the information of the first frequency band combination is an index of multiple frequency band combinations supported by the terminal of the first frequency band combination, and the information of the first frequency band is the the index of the first frequency band in the first frequency band combination, the information of the first capability parameter set is the index of the first capability parameter set in multiple capability parameter sets corresponding to the first frequency band, and the information used for the first capability parameter set The information of the capability parameter of the cell is the index of the capability parameter for the first cell in the first capability parameter set.
The apparatus according to claim 24, wherein the capability parameter for the first cell comprises an uplink capability parameter for the first cell and/or a downlink capability parameter for the first cell.
The apparatus according to claim 25, wherein the index of the capability parameter for the first cell in the first capability parameter set includes the uplink capability parameter for the first cell in the The carrier index in the uplink capability parameter corresponding to the first capability parameter set and/or the carrier index in the downlink capability parameter corresponding to the first capability parameter set of the downlink capability parameter for the first cell.
The apparatus according to any one of claims 22-26, wherein the first information is carried in a handover request message.
The apparatus according to claim 27, wherein the first information is carried in a handover request message, comprising:

The handover request message includes handover preparation information, and the handover preparation information includes the first information.
A communication device, comprising a processor coupled to a memory;

memory for storing computer programs;

A processor for executing a computer program stored in the memory to cause the apparatus to perform the method of any one of claims 1 to 14.
A computer-readable storage medium comprising programs or instructions that, when executed by a processor, perform the method of any one of claims 1 to 14.