CN116567757A

CN116567757A - Auxiliary cell group configuration method, device, chip and module equipment

Info

Publication number: CN116567757A
Application number: CN202210108902.1A
Authority: CN
Inventors: 邓云
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2023-08-08
Also published as: WO2023143362A1

Abstract

The application discloses a secondary cell group configuration method, a secondary cell group configuration device, a secondary cell group configuration chip and a secondary cell group configuration module device, wherein the secondary cell group configuration method comprises the following steps: the source main base station MN sends a conditional switching request message to the candidate MN; the source MN receives a conditional switch request confirmation message from the candidate MN, wherein the conditional switch request confirmation message comprises configuration information of a candidate main cell group MCG and configuration information of a candidate auxiliary cell group SCG; the source MN sends configuration information of the candidate MCG and configuration information of the candidate SCG to the terminal equipment. By the configuration method, the terminal equipment which performs double connection can simultaneously configure the configuration information of the candidate MCG and the configuration information of the candidate SCG, thereby reducing signaling overhead and saving transmission resources.

Description

Auxiliary cell group configuration method, device, chip and module equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, a chip, and a module device for configuring a secondary cell group.

Background

The dual connection mechanism enables the terminal equipment to simultaneously utilize the resources of two base stations (namely the main base station and the auxiliary base station) to carry out data transmission, thereby not only improving the data throughput rate, but also improving the mobility performance of the terminal equipment. The method comprises the steps that a master base station configures an available master cell group for terminal equipment; the auxiliary base station configures available auxiliary cell groups for the terminal equipment to be associated, wherein the auxiliary cell groups comprise a main auxiliary cell and other auxiliary cells. During the movement of the terminal device making the dual connection, the terminal device may switch connection from the source primary base station to the target primary base station (or may be understood as the terminal device switching connection from the source primary cell group to the target primary cell group), and may also switch from the source secondary base station to the target secondary base station (or may be understood as the terminal device switching connection from the source secondary cell group to the target secondary cell group).

In the communication R17 standard, a conditional handover on the primary base station side (i.e., a conditional handover of a primary cell) and a conditional handover on the secondary base station side (i.e., a conditional update of a primary and secondary cell) of a terminal device cannot be configured at the same time. In other words, if the terminal device in dual connectivity configures the candidate primary cell group, the candidate secondary cell group cannot be configured. If dual connection is required to be configured after switching, after the terminal equipment is required to be switched to the target primary cell, the target primary cell is used for configuring the secondary cell group, so that signaling overhead is increased, transmission resource waste is caused, and time delay for configuring the secondary cell group is increased.

Disclosure of Invention

The application provides a secondary cell group configuration method, a secondary cell group configuration device, a secondary cell group configuration chip and a secondary cell group configuration module device, wherein terminal equipment for performing double connection can simultaneously configure configuration information of candidate MCGs and configuration information of candidate SCGs, which is beneficial to reducing signaling overhead and saving transmission resources.

In a first aspect, the present application provides a secondary cell group configuration method, including: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

Based on the configuration method of the secondary cell group provided in the first aspect, the configuration information of the candidate SCG can be sent while the configuration information of the candidate MCG is sent to the terminal equipment.

In a possible embodiment, the conditional handover request message includes capability information of the terminal device, where the capability information of the terminal device is used to indicate that the terminal device has a capability of configuring the candidate MCG and the candidate SCG simultaneously. By implementing the possible implementation manner, the configuration information of the candidate MCG is sent to the terminal device only when the terminal device has the capability of simultaneously configuring the candidate MCG and the candidate SCG, so that the waste of resources is avoided.

In a possible implementation manner, the conditional switch request confirmation message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to the configuration information of the target side or a configuration mode corresponding to the configuration information of the candidate SCG; the target side comprises candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the source MN sends a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In one possible implementation method, the source MN receives configuration information of an updated candidate secondary cell group SCG and configuration information of a candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG is set based on the updated configuration parameters of the source SCG.

In one possible implementation, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirm message contains configuration information of the candidate SCG. By the implementation method, the parameter configuration mode is explicitly indicated in the interface signaling, and the source MN can know whether the candidate MN side needs to be informed of updating the candidate SCG configuration information when the configuration parameters of the source side change on the premise of not analyzing the specific candidate SCG configuration information. The source MN realizes that once the configuration parameters of the source SCG change, the candidate MN needs to be informed of updating the configuration information of the candidate SCG in time, so that the condition that the terminal equipment adopts the outdated configuration information of the candidate SCG to access and cause radio link failure is avoided.

In a second aspect, the present application provides a secondary cell group configuration method, including: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

Based on the secondary cell configuration method provided in the second aspect, the beneficial effects of the foregoing first aspect can be seen, and the details are not repeated here.

In one possible implementation method, the conditional handover request message includes capability information of the terminal device, where the capability information of the terminal device is used to indicate that the terminal device has a capability of configuring the candidate MCG and the candidate SCG simultaneously.

In one possible implementation method, the conditional switch request confirmation message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to the configuration information of the target side or a configuration mode corresponding to the configuration information of the candidate SCG; the target side comprises candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the candidate MN receives a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, the candidate MN updates the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; the candidate MN sends updated configuration information of the candidate SCGs to the source MN.

In one possible implementation, the configuration information of the candidate secondary cell group SCG is used to indicate whether the conditional handover request confirm message contains configuration information of the candidate SCG.

In a third aspect, the present application provides a secondary cell group configuration method, including: the terminal device receives configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG from the source primary base station MN.

Based on the secondary cell configuration method provided in the third aspect, the beneficial effects of the foregoing first aspect can be seen, and the details are not repeated here.

In one possible implementation manner, if the primary and secondary cell switching conditions corresponding to the candidate SCG are not configured, when the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the terminal device accesses the candidate SCG according to the configuration information of the candidate SCG.

In one possible implementation manner, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, when the primary and secondary cell switching conditions corresponding to the candidate SCG are met, the terminal device accesses the candidate SCG according to the configuration information of the candidate SCG. In other words, in this case, the terminal device determines whether the primary and secondary cell update execution conditions corresponding to the candidate SCG are satisfied, and accesses the candidate SCG when the primary and secondary cell update execution conditions corresponding to the candidate SCG are satisfied.

In one possible implementation, the number of candidate SCGs is one or more, and each candidate SCG corresponds to a primary-secondary cell handover condition. In other words, if the terminal device receives configuration information of multiple candidate SCGs, each candidate SCG corresponds to a primary-secondary cell handover condition. After the terminal equipment accesses the candidate MN according to the configuration information of the candidate MCG, the terminal equipment accesses the candidate SCG according to the primary and secondary cell switching conditions corresponding to each candidate SCG when the primary and secondary cell switching conditions of a certain candidate SCG are met.

In a fourth aspect, the present application provides a secondary cell group configuration apparatus, including: a sending unit, configured to send a conditional handover request message to a candidate primary base station MN; a receiving unit, configured to receive a conditional handover request confirm message from a candidate MN, where the conditional handover request confirm message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG; the sending unit is further configured to send configuration information of the candidate MCG and configuration information of the candidate SCG to the terminal device.

In a possible embodiment, the conditional handover request message includes capability information of the terminal device, where the capability information of the terminal device is used to indicate that the terminal device has a capability of configuring the candidate MCG and the candidate SCG simultaneously.

In a possible implementation manner, the conditional switch request confirmation message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to the configuration information of the target side or a configuration mode corresponding to the configuration information of the candidate SCG; the target side comprises candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration mode corresponding to the configuration information is an incremental signaling configuration mode or a full configuration mode.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the sending unit is configured to send a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In one possible implementation method, the receiving unit is configured to receive configuration information of an updated candidate secondary cell group SCG and configuration information of a candidate primary cell group MCG from the candidate MN, where the configuration information of the updated candidate SCG is set based on configuration parameters of the updated source SCG.

In one possible implementation, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirm message contains configuration information of the candidate SCG.

In a fifth aspect, the present application provides a secondary cell group configuration apparatus, the apparatus comprising: a receiving unit, configured to receive a conditional handover request message from a source primary base station MN; a sending unit, configured to send a conditional handover request acknowledgement message to the source MN, where the conditional handover request acknowledgement message includes configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In one possible implementation method, the device further includes a processing unit, where a configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or a configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and a receiving unit, configured to receive a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, the processing unit is used for updating the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; and a transmitting unit, configured to transmit the updated configuration information of the candidate SCGs to the source MN.

In a sixth aspect, the present application provides a secondary cell group configuration apparatus, the apparatus comprising: and the receiving unit is used for receiving the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source primary base station MN.

In one possible implementation manner, the apparatus further includes an access unit, where if the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, the access unit is configured to access the candidate SCG according to the configuration information of the candidate SCG when the candidate MN is accessed according to the configuration information of the candidate MCG.

In one possible implementation manner, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the access unit is configured to access the candidate SCG according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are met.

In one possible implementation, the number of candidate SCGs is one or more, and each candidate SCG corresponds to a primary-secondary cell handover condition.

In a seventh aspect, the present application provides a chip comprising a processor and a communication interface, the processor being configured to: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

In an eighth aspect, the present application provides a chip comprising a processor and a communication interface, the processor configured to: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In a ninth aspect, the present application provides a chip comprising a processor and a communication interface, the processor being configured to: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

In a tenth aspect, the present application provides a module apparatus, the module apparatus including a communication module, a power module, a storage module, and a chip, wherein: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or carrying out communication between the module equipment and external equipment; the chip is used for: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

In an eleventh aspect, the present application provides a modular device comprising a transceiver component and a chip comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor is configured to: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In a twelfth aspect, the present application provides a modular device comprising a transceiver component and a chip comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor is configured to: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

In a thirteenth aspect, embodiments of the present invention disclose a base station comprising a memory for storing a computer program comprising program instructions, and a processor configured to invoke the program instructions, perform the method of the first aspect and any of its possible implementations, or perform the method of the second aspect and any of its possible implementations.

In a fourteenth aspect, an embodiment of the present invention discloses a terminal device comprising a memory for storing a computer program comprising program instructions and a processor configured to invoke the program instructions to perform the method of the third aspect and any of its possible implementations.

In a fifteenth aspect, the present application provides a computer readable storage medium having stored therein computer readable instructions which, when run on a communications device, cause the communications device to perform the method of the first aspect and any of its possible implementations, or to perform the method of the second aspect and any of its possible implementations, or to perform the method of the third aspect and any of its possible implementations.

In a sixteenth aspect, the present application provides a computer program or computer program product comprising code or instructions which, when run on a computer, cause the computer to perform the method as in the first aspect and any of its possible implementations, or to perform the method as in the second aspect and any of its possible implementations, or to perform the method as in the third aspect and any of its possible implementations.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application;

fig. 2 is a schematic flow chart of a conditional switching provided in an embodiment of the present application;

fig. 3 is a flow chart of a secondary cell group configuration method provided in an embodiment of the present application;

fig. 4 is a flowchart of another secondary cell group configuration method according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a secondary cell group configuration device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a secondary cell group configuration device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a module device according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a module device according to an embodiment of the present application.

Detailed Description

Specific embodiments of the present application are described in further detail below with reference to the accompanying drawings.

The terms first and second and the like in the description, in the claims and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the present application, "at least one (item)" means one or more, "a plurality" means two or more, and "at least two (items)" means two or three or more, and/or "for describing an association relationship of an association object, three kinds of relationships may exist, for example," a and/or B "may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

For a better understanding of the embodiments of the present application, the following first describes a communication system related to the embodiments of the present application:

the technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA) systems, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) communication systems, fifth generation (5th generation,5G) systems or new radio, NR) future communication systems, and the like.

Fig. 1 is a schematic diagram of a communication system provided in an embodiment of the present application, and a solution in the present application may be applied to the communication system. The communication system may comprise base stations and terminal devices, fig. 1 taking the example of a communication system comprising 2 base stations and 1 terminal device.

1. Terminal equipment

The terminal device comprises a device for providing voice and/or data connectivity to a user, for example, the terminal device is a device with wireless transceiver functions, which can be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal may be a mobile phone, a vehicle, a road side unit, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in an industrial control (industrial control), a vehicle-mounted terminal device, a wireless terminal in an unmanned aerial vehicle (self driving), a wireless terminal in a remote medical (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a wearable terminal device, or the like. The embodiments of the present application are not limited to application scenarios. A terminal device may also sometimes be referred to as a terminal, user Equipment (UE), access terminal device, vehicle terminal, industrial control terminal, UE unit, UE station, mobile station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, UE apparatus, or the like. The terminal may also be fixed or mobile. In the embodiment of the present application, the means for implementing the function of the terminal device may be the terminal device, or may be a means capable of supporting the terminal device to implement the function, for example, a chip system or a combination device or a component capable of implementing the function of the terminal device, and the apparatus may be installed in the terminal device.

2. Base station

A base station is a node or device that accesses a terminal device to a wireless network, and reference herein to a base station includes, for example, but is not limited to: base station (base station), evolved NodeB (eNodeB), transmission and reception point (transmission reception point, TRP), next generation NodeB (gNB) in the fifth generation (5th generation,5G) mobile communication system, next generation base station in the sixth generation (6th generation,6G) mobile communication system, base station in the future mobile communication system, access node in the WiFi system, or the like. The base station referred to in this application may be a module or a unit for performing part of the functions of the base station, for example, may be a Central Unit (CU) or may be a Distributed Unit (DU). The CU can complete the functions of a radio resource control protocol and a packet data convergence layer protocol (packet data convergence protocol, PDCP) of the base station and can also complete the functions of a service data adaptation protocol (service data adaptation protocol, SDAP); the DU performs the functions of a radio link control layer and a medium access control (medium access control, MAC) layer of the base station, and may also perform the functions of a part of or all of the physical layers. For a detailed description of the various protocol layers described above, reference may be made to the relevant technical specifications of the third generation partnership project (3rd generation partnership project,3GPP). The base station mentioned in the application may be a macro base station, a micro base station or an indoor station, a relay node or a donor node, etc.

In the embodiment of the present application, the device for implementing the function of the base station may be the base station itself, or may be a device capable of supporting the base station to implement the function, for example, a chip system or a combination device or a component capable of implementing the function of the base station, and the device may be installed in the base station. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the base station.

In order to facilitate understanding of the technical solution of the present application, the following explains some nouns related in the present application.

1. Double connection (Dual Connectivity DC)

The dual connectivity technique may provide higher data transfer rates to the terminal devices and utilize macro/micro networking to improve spectral efficiency and load balancing. As shown in fig. 1, a terminal device supporting dual connectivity can simultaneously establish communication connection with two base stations including a Master Node (MN) and a Secondary Node (SN). In the communication system, a terminal device supporting dual connectivity is configured with at least two cell groups, one primary cell group (master cell group, MCG) and one secondary cell group (secondary cell group, SCG). The MCG refers to a cell group associated with a primary base station, and includes one primary cell (PCell) and one or more secondary cells (scells). The PCell in the MCG is a cell that establishes a radio resource control (Radio Resource Control, RRC) connection with the terminal device, and is configured with physical uplink control channel (physical uplink control channel, PUCCH) resources. Other scells in the MCG typically do not configure PUCCH resources. SCG refers to a group of cells associated with a secondary base station, which includes one primary and secondary cell (primary secondary cell, PSCell) and one or more scells. The PSCell in the SCG is a serving cell in the SCG that is uniquely configured with PUCCH resources.

2. Condition switching (Conditional HandOver, CHO)

The CHO mechanism is a mechanism for enhancing the robustness of switching or auxiliary node addition, and can improve the switching success rate of terminal equipment. Specifically, a schematic flow chart of the conditional switching of the terminal device may be shown in fig. 2, including S201-S205. Wherein:

s201, the source base station sends a conditional switching request to the candidate target base station.

S202, the candidate target base station allocates necessary wireless resources for the terminal equipment, and then sends a conditional handover request confirmation message to the source base station.

S203, the source base station sends configuration information of conditional switching to the terminal equipment, wherein the configuration information comprises information of one or more candidate cells configured by the network equipment for the terminal equipment, and switching conditions (or called switching execution conditions) corresponding to each candidate cell.

S204, after receiving the configuration information of the conditional switching, the terminal equipment evaluates whether each candidate cell meets the switching condition according to the configuration information.

S205, the terminal equipment takes a certain candidate cell meeting the switching condition as a target cell, and switches to the target cell.

In the conditional handover procedure shown in fig. 2, when the source link quality is good, the source base station may send configuration information of the conditional handover to the terminal device, so as to ensure a success rate of sending the configuration information, and further, the terminal device may select a target cell according to the configuration information and perform handover, so as to improve a success rate of handover.

3. Conditional primary and secondary cell handover (Conditional PSCell Change, CPC)

The CPC mechanism may be understood as a conditional handover mechanism on the secondary base station side, also referred to as a conditional update mechanism. The CPC mechanism is a procedure in which the MN or SN sends the configuration of the candidate PSCell and the handover condition for the candidate PSCell handover to the terminal device in advance, and when the terminal device measures that the candidate PSCell satisfies the handover condition, the PSCell handover can be performed spontaneously. Typically PSCell handover is also referred to as primary secondary cell update.

In the R17 communication standard, a conditional handover on the primary base station side (i.e., a conditional handover of a primary cell) and a conditional handover on the secondary base station side (i.e., a conditional update of a primary and secondary cell) cannot be configured at the same time. In other words, if the terminal device in dual connectivity configures the candidate primary cell group, the candidate secondary cell group cannot be configured. If dual connection is required to be configured after switching, after the terminal equipment is required to be switched to the target primary cell, the target primary cell configures the secondary cell group, and the signaling overhead is increased, the waste of transmission resources is caused, and the time delay for configuring the secondary cell group SCG is also increased by the configuration mode of the secondary cell group.

In order to simultaneously configure configuration information of a primary cell group and configuration information of a secondary cell group in terminal equipment, thereby reducing signaling overhead and saving transmission resources, the application provides a secondary cell group configuration method, a secondary cell group configuration device, a secondary cell group configuration chip and a secondary cell group module device. The following further describes the configuration method, device, chip and module device of the secondary cell group provided in the embodiments of the present application in detail.

Referring to fig. 3, fig. 3 is a flow chart of a secondary cell group configuration method according to an embodiment of the present application. As shown in fig. 3, the secondary cell group configuration method includes the following S301 to S303. The method execution body shown in fig. 3 may be the source MN or a chip in the source MN. Alternatively, the method execution body shown in fig. 3 may be a candidate MN or a chip in a candidate MN. Fig. 3 illustrates an example of an execution body of the method of the source MN and the candidate MN.

S301, the source MN sends a conditional switch request message to the candidate MN.

Accordingly, the candidate MN receives the conditional handoff request message from the source MN. Specifically, the source MN selects at least one candidate PCell according to the measurement report of the terminal device, and sends a conditional handover request message to the candidate MN corresponding to each PCell in the at least one candidate PCell. In other words, the source MN can send a conditional handoff request message to one or more candidate MNs.

In one possible implementation, the conditional handover request message includes capability information of the terminal device, where the capability information of the terminal device is used to indicate that the terminal device has a capability of configuring the candidate MCG and the candidate SCG simultaneously. Illustratively, the conditional handover request message includes a field a, where a value of the field a is used to indicate whether the terminal device has a capability of configuring the candidate MCG and the candidate SCG simultaneously, and when a value of the field a is 0, it indicates that the terminal device does not have a capability of configuring the candidate MCG and the candidate SCG simultaneously; when the value of this field a is 1, the terminal device is then indicated to have the capability to configure both candidate MCG and candidate SCG.

In another possible implementation, the conditional handover request message may further include, in addition to capability information of the terminal device: the configuration parameters of the source MCG corresponding to the current terminal equipment, the configuration parameters of the source SCG, the configuration information of the data radio bearer of the terminal equipment and the like.

S302, the source MN receives a conditional switch request confirmation message from the candidate MN, wherein the conditional switch request confirmation message comprises configuration information of the candidate MCG and configuration information of the candidate SCG.

Accordingly, after the candidate MN receives the conditional handover request message from the source MN, if the candidate MN accepts the handover request, the candidate MN and the candidate SN negotiate to configure reasonable radio parameters for the terminal device, that is, configure (or understand to determine) configuration information of the candidate MCG and configuration information of the candidate SCG. Further, the candidate MN sends a conditional handover request confirm message to the source MN, where the conditional handover request message includes configuration information of the candidate MCG and configuration information of the candidate SCG. Specifically, the candidate MN may send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the source MN through a transport container (also referred to as Transparent Container). It should be understood that each candidate MCG may have a corresponding handover condition (i.e., a handover condition of the PCell in the candidate MCG), the handover condition is set by the source MN, each candidate SCG may have a corresponding handover condition (i.e., an update condition of the PSCell in the candidate SCG), or the candidate SCG may have no corresponding handover condition.

In other words, if the candidate SCG has a corresponding updating condition of the PSCell, the updating condition of the PSCell may be set by the candidate MN, and after receiving the candidate SCG configuration information configured by the candidate SN for the terminal device, the candidate MN places the configuration information of the candidate MCG configured by the terminal device, the configuration information of the candidate SCG and the updating condition of the PSCell corresponding to each candidate SCG in a transmission container (also referred to as Transparent Container), and sends the configuration information and the updating condition of the PSCell corresponding to each candidate SCG to the source MN through a conditional switch request acknowledgement message. If the candidate SCG does not have the corresponding updating condition of the PSCell, after receiving the candidate SCG configuration information configured by the candidate SN for the terminal device, the candidate MN places the configuration information of the candidate MCG configured by the terminal device and the configuration information of the candidate SCG in a transmission container (also called Transparent Container), and sends the configuration information to the source MN through a conditional switch request acknowledgement message.

Illustratively, in the case where the capability information of the terminal device in the conditional handover request message includes capability of configuring both the candidate MCG and the candidate SCG, the conditional handover request confirm message sent by the candidate MN to the source MN includes configuration information of the candidate MCG and configuration information of the candidate SCG. In the case where the capability information of the terminal device in the conditional handover request message does not include capability to simultaneously configure the candidate MCG and the candidate SCG, the configuration information of the candidate MCG is included in the conditional handover request confirm message sent by the candidate MN to the source MN.

In a possible embodiment, the conditional handover request confirm message is further used to indicate whether the conditional handover request confirm message contains configuration information of candidate SCGs. Alternatively, it may be understood that the conditional handover request confirm message includes an explicit indication field for indicating whether the transport container (also known as Transparent Container) contains configuration information of candidate SCGs. For example, the indication field 1 is used to indicate whether the transmission container (also called Transparent Container) contains the configuration information of the candidate SCG, and when the indication field 1 is 0, it indicates that the transmission container (also called Transparent Container) does not contain the configuration information of the candidate SCG, and when the indication field 1 is 1, it indicates that the transmission container (also called Transparent Container) contains the configuration information of the candidate SCG.

Alternatively, in another possible implementation, the candidate MN may also send an Xn interface message to the source MN, which is used to indicate whether the transport container (also known as Transparent Container) contains configuration information of the candidate SCG.

In a possible implementation manner, the conditional switch request acknowledgement message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to the configuration information of the target side or a configuration mode corresponding to the configuration information of the candidate SCG. Wherein the target side comprises candidate MCGs and/or candidate SCGs; the configuration mode corresponding to the configuration information of the target side is an incremental Signaling configuration mode (Delta Signaling) or a full configuration mode (Full Configuration); or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode (DeltaSignaling) or a full configuration mode (Full Configuration). The incremental signaling configuration mode can be simply understood as that the configuration parameters of the source side are used as reference standards, and the configuration parameters different from the configuration parameters of the source side in the new configuration parameters are configured in an incremental signaling mode.

In other words, when the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, the configuration information of the candidate SCG includes the necessary configuration parameters of the candidate SCG, and in this case, the terminal device needs to learn all the configuration parameters of the candidate SCG through the configuration information of the candidate SCG and the reference standard (i.e., the configuration parameters of the source SCG). When the configuration mode corresponding to the configuration information of the candidate SCG is a full configuration mode, the configuration information of the candidate SCG includes all configuration parameters of the candidate SCG.

Illustratively, the configuration parameters of the source SCG are: a11, b12, c13 and d14, the configuration parameters of the candidate SCGs are: a11, b12, c33 and d34, in which case, if the configuration information of the candidate SCG corresponds to the configuration mode being an incremental signaling configuration mode, the configuration information of the candidate SCG is used to indicate that c13 in the configuration parameters of the source SCG is replaced with c33, and d14 is replaced with d34; if the configuration mode corresponding to the configuration information of the candidate SCG is a full configuration mode, the configuration information of the candidate SCG is used to indicate that the configuration parameters of the candidate SCG are a11, b12, c33 and d34. It should be noted that the incremental signaling configuration manner also complies with rules, for example, some of the configuration parameters may be configured with incremental signaling, and some of the configuration parameters may not be configured with incremental signaling.

S303, the source MN sends configuration information of the candidate MCG and configuration information of the candidate SCG to the terminal equipment.

After receiving the configuration information of the candidate MCGs and the configuration information of the candidate SCGs from the candidate MN, the source MN forwards the configuration information of the candidate MCGs and the handover conditions of the candidate MCGs (i.e., the handover conditions of the PCell), and the configuration information of the candidate SCGs and the handover conditions of the candidate SCGs to the terminal device. After receiving the configuration information of the candidate MCG and the configuration information of the candidate SCG, the terminal device evaluates whether the candidate primary cell (primary cell in the candidate MCG) meets the switching condition according to the switching condition of each candidate MCG, if so, the terminal device accesses the target MCG (i.e. accesses the target primary cell) according to the configuration information of the candidate MCG, and then accesses the target SCG according to the configuration information of the candidate SCG associated with the configuration information of the candidate MCG.

It should be noted that, the source MN may send configuration information of multiple candidate MCGs and configuration information of candidate SCGs associated with each MCG configuration to the terminal device, where the switching condition corresponding to each candidate MCG may be the same or different. The terminal device finds that a certain candidate MCG meets the handover condition, namely that the main cell of the candidate MCG meets the handover condition, and then accesses the candidate MCG associated with the candidate MCG (if the candidate SCG does not have the corresponding PSCell update condition), so that the establishment of dual connectivity can be completed in the handover process.

In one possible implementation, when the terminal device accesses the candidate MN according to the configuration information of the candidate MCG without configuring the primary and secondary cell handover conditions (also referred to as update execution conditions) corresponding to the candidate SCG, the terminal device accesses the candidate SCG simultaneously (or in parallel) according to the configuration information of the candidate SCG. It is understood that the candidate MCG is associated with (or corresponds to) the candidate SCG or the candidate MCG and the candidate SCG are associated with (or correspond to) the same candidate MN.

In one possible implementation manner, if a primary-secondary cell handover condition (also referred to as an update execution condition) corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, the terminal device accesses the candidate SCG according to the configuration information of the candidate SCG when the primary-secondary cell handover condition (also referred to as the update execution condition) corresponding to the candidate SCG is satisfied. In other words, if the transmission container (also called Transparent Container) includes the radio connection parameter of the candidate SCG and the PSCell switching condition of the candidate SCG, after the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the terminal device needs to determine whether the PSCell in the candidate SCG meets the primary-secondary cell switching condition corresponding to the candidate SCG, and accesses the candidate SCG when the primary-secondary cell switching condition (update execution condition) corresponding to the candidate SCG is met.

In one possible implementation, the number of candidate SCGs may be one or more, each candidate SCG corresponding to a primary-secondary cell handover condition. In other words, if the conditional handover request acknowledgement message includes configuration information of a plurality of candidate SCGs, the configuration information of each candidate SCG has a corresponding primary-secondary cell handover condition. After the terminal equipment accesses the candidate MN according to the configuration information of the candidate MCGs, the terminal equipment evaluates whether the PScell in the candidate SCGs meets the corresponding PScell switching conditions according to the primary and secondary cell switching conditions (updating execution conditions) corresponding to each candidate SCG, and when the PScell meets the switching conditions, the terminal equipment accesses the PScell meeting the switching conditions.

Based on the secondary cell group configuration method provided in fig. 3, the terminal device performing dual connection can simultaneously configure configuration information of candidate MCGs and configuration information of candidate SCGs, which is beneficial to reducing signaling overhead and saving transmission resources.

In the method shown in fig. 3, in the case where the configuration mode corresponding to the configuration information of the candidate SCG may be an incremental signaling configuration mode, if the configuration parameters of the source SCG are updated, the configuration parameters obtained by the terminal device according to the updated configuration parameters of the source SCG and the configuration information of the candidate SCG may be caused, and the configuration parameters of the secondary base station corresponding to the candidate SCG may not correspond to the configuration parameters of the SCG stored in the secondary base station corresponding to the candidate SCG, which may further cause that the terminal device cannot successfully access the candidate SCG.

For example, at the first moment, the candidate MN receives the configuration parameters of the source SCG sent by the source MN as follows: a11, b12, c13 and d14. Further, the candidate MN sends configuration information of the candidate SCG to the source MN, where the configuration information of the candidate SCG is used to indicate that c13 in the configuration parameters of the source SCG is replaced by c33, and d14 is replaced by d34, that is, the configuration of the candidate SCG may be only c33 and d34. At a second time after the first time, the configuration parameters of the source SCG are updated, and the updated configuration parameters of the source SCG: a11, b121, c13 and d14. In this case, the terminal device obtains complete configuration parameters a11, b121, c33 and d34 according to the configuration information of the candidate SCGs and the updated configuration parameters of the source SCGs, and the complete configuration parameters are different from the configuration parameters (a 11, b12, c33 and d 34) of the candidate SCGs stored in the candidate auxiliary base station side. If the terminal equipment accesses the SCG, there may be parameter mismatch, which results in abnormal connection.

In order to avoid this situation, the success rate of the terminal device accessing the candidate SCG is improved. Referring to fig. 4, fig. 4 is a flowchart of another secondary cell group configuration method according to an embodiment of the present application. As shown in fig. 4, the secondary cell group configuration method includes the following S401 to S407.

S401, the source MN sends a conditional switch request message to the candidate MN.

S402, the source MN receives a conditional handover request confirm message from the candidate MN, where the conditional handover request confirm message includes configuration information of the candidate MCG and configuration information of the candidate SCG.

S403, the source MN sends the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

The specific embodiments of S401 to S403 may refer to the foregoing descriptions of the specific embodiments of S301 to S303, and the repetition is not repeated.

S404, when the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental configuration mode, the source MN sends a notification message to the candidate MN, wherein the notification message is used for notifying that the configuration parameters of the source SCG are updated, and the notification message comprises the updated configuration parameters of the source SCG.

In other words, because the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration information of the candidate SCG is configured in the incremental signaling configuration mode, the terminal device needs to use the configuration parameter of the source side as a reference standard, and can acquire all the configuration parameters of the candidate SCG by combining the configuration information of the target side or the configuration information of the candidate SCG. Since the configuration parameters of the source side (for example, the configuration parameters of the source SCG) are variable, when the configuration parameters of the source SCG are updated, the source MN needs to send a notification message to the candidate MN, so that the candidate MN knows that the configuration parameters of the source SCG are updated, and further the candidate MN sets new configuration information of the candidate SCG according to the updated configuration parameters of the source SCG.

In another possible implementation manner, if the configuration mode corresponding to the configuration information on the target side is a full configuration mode, or the configuration mode corresponding to the configuration information on the candidate SCG is a full configuration mode, in this case, all (complete) parameters of the candidate SCG may be determined only according to the configuration information on the target side, or the configuration information on the candidate SCG, in this case, when the configuration parameters of the source SCG are updated, the source MN does not need to send a notification message to the candidate MN.

S405 (optional), if the updated configuration parameter of the source SCG is associated with the configuration parameter of the candidate SCG, the candidate MN updates the configuration information of the candidate SCG based on the updated configuration parameter of the source SCG.

In other words, after the candidate MN receives the notification message, it is determined whether the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG. If the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, the candidate MN negotiates with the candidate SN to update the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG. If the updated configuration parameters of the source SCG are not associated with the configuration parameters of the candidate SCG, for example, the configuration parameters of the candidate SCG are in a full configuration mode, the candidate MN may ignore the updated configuration parameters of the source SCG, that is, may not update the configuration information of the candidate SCG.

The situation that the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG may be understood as a situation that all the configuration parameters of the candidate SCG cannot be accurately determined according to the configuration information of the candidate SCG and the updated configuration parameters of the source SCG; the situation that the updated configuration parameters of the source SCG are not associated with the configuration parameters of the candidate SCG may be understood as a situation that all the configuration parameters of the candidate SCG can be accurately determined according to the configuration information of the candidate SCG.

Illustratively, at the first moment, the candidate MN receives a conditional handover request message sent by the source MN, where the conditional handover request message indicates that the configuration parameters of the source MCG are a01, b02, c03, and d04, where the configuration parameters of the source SCG are: a11, b12, c13 and d14. Further, the candidate MN sends a conditional handover request confirm message to the source MN, where the configuration information of the candidate MCGs in the conditional handover request confirm message is a01, b02, c23, and d04, and the configuration information of the candidate SCGs is used to indicate that c13 in the configuration parameters of the source SCG is replaced with c33, and d14 is replaced with d34, that is, the configuration information of the candidate SCGs is c33 and d34. At a second moment after the first moment, the source MN perceives that the configuration parameters of the source SCG are updated, and then the source MN sends a notification message to the candidate MN, wherein the notification message comprises the updated configuration parameters of the source SCG: a11, b121, c13 and d14. In this case, it may be inferred that the determined configuration parameters are: a11, b121, c33, and d34, unlike the configuration parameters (a 11, b12, c33, and d 34) of the original candidate SCG, the updated configuration parameters of the source SCG may be considered to be associated with the configuration parameters of the candidate SCG. Further, the candidate MN sends updated configuration information of the candidate SCG and configuration information of the candidate MCG to the source MN, where the updated configuration information of the candidate SCG is used to indicate that b121 in the configuration parameters of the source SCG is replaced by b12, c13 is replaced by c33, d14 is replaced by d34, that is, the configuration information of the candidate SCG is b12, c33 and d34, and the configuration information of the candidate MCG is a01, b02, c23 and d04.

S406 (optional), the candidate MN sends the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the source MN.

In other words, if the configuration parameters of the source SCG updated on the source MN side are associated with the configuration parameters of the candidate SCG, the source MN may also receive the configuration information of the updated candidate SCG and the configuration information of the candidate MCG from the candidate MN, where the configuration information of the updated candidate SCG is set based on the configuration parameters of the updated source SCG.

S407 (optional), the source MN sends the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the terminal device.

The source MN sends the updated configuration information of the candidate SCG and the updated configuration information of the candidate MCG to the terminal equipment, and further, the terminal equipment updates the configuration information of the candidate SCG and the configuration information of the candidate MCG stored by the terminal equipment based on the updated configuration information of the candidate SCG and the updated configuration information of the candidate MCG.

As can be seen, by the secondary cell group configuration method provided in fig. 4, in the case of configuring the configuration information of the candidate SCG by the incremental signaling configuration manner, the source MN will notify the candidate MN of the updated source SCG parameter, so that the candidate MN can set the configuration information of the updated candidate SCG according to the updated source SCG parameter, thereby avoiding the situation that the candidate SCG configuration parameter determined by the terminal device according to the configuration information of the candidate SCG does not correspond to the SCG configuration parameter stored by the candidate MN, and improving the success rate of accessing the candidate SCG by the terminal device.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a secondary cell group configuration device according to an embodiment of the present invention, where the secondary cell group configuration device may be a source base station or a device (e.g. a chip) with a function of the source base station. Specifically, as shown in fig. 5, the secondary cell group configuration apparatus 500 may include:

a transmitting unit 501, configured to transmit a conditional handover request message to a candidate primary base station MN;

a receiving unit 502, configured to receive a conditional handover request acknowledgement message from the candidate MN, where the conditional handover request acknowledgement message includes configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG;

the sending unit 501 is further configured to send configuration information of the candidate MCG and configuration information of the candidate SCG to the terminal device.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the sending unit 501 is configured to send a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the receiving unit 502 is configured to receive configuration information of an updated candidate secondary cell group SCG and configuration information of a candidate primary cell group MCG from the candidate MN, where the configuration information of the updated candidate SCG is set based on configuration parameters of the updated source SCG.

In one possible implementation, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirm message contains configuration information of the candidate SCG. By explicitly indicating whether the transmission container contains the configuration information of the candidate SCG in the interface signaling, so that the source MN is aware of whether the candidate MN needs to be informed of the configuration information of the candidate SCG in time after the configuration parameters of the source-side SCG are updated, and meanwhile, the source MN is prevented from analyzing the content in the transmission container, so that the processing complexity of the source MN can be reduced.

In one possible embodiment, the secondary cell group configuration means may be a candidate base station or a device (e.g. chip) with candidate base station functionality. Wherein the secondary cell group configuration apparatus 500 includes:

a receiving unit 502, configured to receive a conditional handover request message from a source master base station MN;

a sending unit 501, configured to send a conditional handover request acknowledgement message to the source MN, where the conditional handover request acknowledgement message includes configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In a possible implementation method, the secondary cell group configuration device further includes a processing unit 503, where in this case, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the receiving unit 502 is configured to receive a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; a processing unit 503, configured to update configuration information of the candidate SCG based on the updated configuration parameters of the source SCG if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG; a transmitting unit 501, configured to transmit the updated configuration information of the candidate SCGs.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a secondary cell group configuration device according to an embodiment of the present invention, where the secondary cell group configuration device may be a terminal device or a device (e.g. a chip) with a function of the terminal device. Specifically, as shown in fig. 6, the secondary cell group configuration apparatus 600 may include:

A receiving unit 601 is configured to receive configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN.

In a possible implementation manner, the apparatus 600 further includes an access unit 602, where if the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, the access unit 602 is configured to access the candidate SCG according to the configuration information of the candidate SCG when the candidate MN is accessed according to the configuration information of the candidate MCG.

In one possible implementation, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the access unit 602 is configured to access the candidate SCG according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are met.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station 700 may include a memory 701, a processor 702. Optionally, a communication interface 703 is also included. The memory 701, processor 702, and communication interface 703 are connected by one or more communication buses. Wherein the communication interface 703 is controlled by the processor 702 to transmit and receive information. Memory 701 may include read only memory and random access memory, and provides instructions and data to processor 702. A portion of memory 701 may also include non-volatile random access memory. The communication interface 703 is used to receive or transmit data. The processor 702 may be a central processing unit (Central Processing Unit, CPU), the processor 702 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor, but in the alternative, the processor 702 may be any conventional processor or the like. Wherein:

Memory 701 for storing program instructions.

A processor 702 for invoking program instructions stored in memory 701.

The processor 702 invokes the program instructions stored in the memory 701 to cause the base station 700 to: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor 702 is further configured to send a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the processor 702 is further configured to receive updated configuration information of the candidate secondary cell group SCG and configuration information of the candidate primary cell group MCG from the candidate MN, where the updated configuration information of the candidate SCG is set based on the updated configuration parameters of the source SCG.

In one embodiment, the base station 700 also performs the following operations: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor 702 is further configured to receive a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, the processor 702 is further configured to update the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; the processor 702 is further configured to send updated configuration information of the candidate SCGs.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 800 may include a memory 801, a processor 802. Optionally, a communication interface 803 is also included. The memory 801, processor 802, and communication interface 803 are connected by one or more communication buses. Wherein the communication interface 803 is under the control of the processor 802 to transmit and receive information. Memory 801 may include read only memory and random access memory and provide instructions and data to processor 802. A portion of the memory 801 may also include non-volatile random access memory. The communication interface 803 is used to receive or transmit data. The processor 802 may be a central processing unit (Central Processing Unit, CPU), and the processor 802 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor, but in the alternative, the processor 802 may be any conventional processor or the like. Wherein:

A memory 801 for storing program instructions.

A processor 802 for invoking program instructions stored in memory 801.

The processor 802 invokes the program instructions stored in the memory 801 to cause the terminal device 800 to: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

In a possible implementation manner, the apparatus further includes an access unit, where if the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, the processor 802 is further configured to access the candidate SCG according to the configuration information of the candidate SCG when accessing the candidate MN according to the configuration information of the candidate MCG.

In one possible implementation, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the processor 802 is further configured to access the candidate SCG according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are met.

It should be noted that, details not mentioned in the embodiments corresponding to fig. 5 to fig. 8 and specific implementation manners of each step may refer to the embodiments shown in fig. 3 or fig. 4 and the foregoing details, which are not repeated herein.

The embodiment of the application also provides a chip, which can execute the relevant steps of the source master base station (or the candidate master base station) in the embodiment of the method. The chip includes a processor and a communication interface, the processor configured to perform operations of: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor is further configured to send a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In one possible implementation method, the processor is further configured to receive configuration information of an updated candidate secondary cell group SCG and configuration information of a candidate primary cell group MCG from the candidate MN, where the configuration information of the updated candidate SCG is set based on configuration parameters of the updated source SCG.

In one embodiment, the processor is configured to perform the following: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor is further configured to receive a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, updating the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; and sending the updated configuration information of the candidate SCG.

The embodiment of the application also provides another chip, which can execute the relevant steps of the terminal equipment in the embodiment of the method. The chip includes a processor and a communication interface, the processor configured to perform operations of: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

In one possible implementation manner, the apparatus further includes an access unit, and if the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, the processor is configured to access the candidate SCG according to the configuration information of the candidate SCG when accessing the candidate MN according to the configuration information of the candidate MCG.

In one possible implementation manner, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the processor is configured to access the candidate SCG according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are satisfied.

As shown in fig. 9, fig. 9 is a schematic structural diagram of a module device according to an embodiment of the present application. The module apparatus 900 may perform the steps related to the source base station or the candidate base station in the foregoing method embodiment, where the module apparatus 900 includes: communication module 901, power module 902, storage module 903, and chip 904. Wherein the power module 902 is configured to provide power to the module device; the storage module 903 is used for storing data and instructions; the communication module 901 is used for performing internal communication of module equipment or performing communication between the module equipment and external equipment; the chip 904 is configured to: sending a conditional switching request message to a candidate master base station MN; receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG; and sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal equipment.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the chip 904 is further configured to send a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In one possible implementation method, the chip 904 is further configured to receive updated configuration information of the candidate secondary cell group SCG and configuration information of the candidate primary cell group MCG from the candidate MN, where the updated configuration information of the candidate SCG is set based on the updated configuration parameters of the source SCG.

In one embodiment, the chip 904 is configured to: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

In one possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the chip 904 is further configured to receive a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, updating the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; and sending the updated configuration information of the candidate SCG.

As shown in fig. 10, fig. 10 is a schematic structural diagram of a module device according to an embodiment of the present application. The module apparatus 1000 may perform the steps related to the terminal apparatus in the foregoing method embodiment, where the module apparatus 1000 includes: a communication module 1001, a power module 1002, a memory module 1003, and a chip 1004. Wherein the power module 1002 is configured to provide power to the module device; the storage module 1003 is used for storing data and instructions; the communication module 1001 is used for performing internal communication of a module device or for performing communication between the module device and an external device; the chip 1004 is configured to: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

In a possible implementation manner, the apparatus further includes an access unit, where if the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, the chip 1004 is configured to access the candidate SCG simultaneously when the candidate MN is accessed according to the configuration information of the candidate MCG.

In one possible implementation, if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the chip 1004 is configured to access the candidate SCG according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are satisfied.

The present application also provides a computer readable storage medium having instructions stored therein, which when run on a processor, implement the method flows of the method embodiments described above.

The present application also provides a computer program product, which when run on a processor, implements the method flows of the above method embodiments.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, each module/unit included in each device or product applied to or integrated in the chip may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on an integrated processor inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same piece (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, the included modules/units may all be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) some modules/units may be implemented in hardware such as a circuit.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some acts may, in accordance with the present application, occur in other orders and concurrently. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

The descriptions of the embodiments provided in the present application may be referred to each other, and the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and brevity of description, for example, reference may be made to the related descriptions of the method embodiments of the present application for the functions and operations performed by the devices and apparatuses provided by the embodiments of the present application, and reference may also be made to each other, combined or cited between the method embodiments, and between the device embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A secondary cell group configuration method, characterized in that the method is applied in a source primary base station MN, the method comprising:

sending a conditional handoff request message to the candidate MN;

receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

and sending the configuration information of the candidate MCGs and the configuration information of the candidate SCGs to terminal equipment.

2. The method according to claim 1, characterized in that the conditional handover request message comprises capability information of the terminal device, the capability information of the terminal device being used to indicate that the terminal device has the capability to configure both candidate MCG and candidate SCG.

3. The method according to claim 1 or 2, wherein the conditional handover request acknowledgement message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to configuration information of a target side or a configuration mode corresponding to configuration information of the candidate SCG;

wherein the target side includes the candidate MCG and the candidate SCG; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.

4. The method according to any one of claims 1-3, wherein a configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or a configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the method further includes:

and sending a notification message to the candidate MN, wherein the notification message is used for notifying the updated configuration parameters of the source SCG, and the notification message comprises the updated configuration parameters of the source SCG.

5. The method of claim 4, wherein the method further comprises:

and receiving updated configuration information of candidate SCGs and configuration information of candidate MCGs from the candidate MN, wherein the updated configuration information of the candidate SCGs is set on the basis of the configuration parameters of the updated source SCGs.

6. The method of claim 1, 4 or 5, wherein the configuration information of the candidate SCGs is used to indicate whether the conditional handover request confirm message contains configuration information of candidate SCGs.

7. A secondary cell group configuration method, wherein the method is applied to a candidate primary base station MN, the method comprising:

receiving a conditional handoff request message from a source MN;

And sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

8. The method according to claim 7, wherein the conditional handover request message includes capability information of the terminal device, the capability information of the terminal device being used to indicate that the terminal device has a capability of configuring both the candidate MCG and the candidate SCG.

9. The method of claim 7, wherein the conditional handover request confirm message further includes first indication information, where the first indication information is used to indicate a configuration mode corresponding to configuration information of a target side or a configuration mode corresponding to configuration information of the candidate SCG;

10. The method according to any one of claims 7-9, wherein a configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or a configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the method further includes:

Receiving a notification message from the source MN, wherein the notification message is used for notifying the configuration parameters of the source SCG to be updated, and the notification message comprises the updated configuration parameters of the source SCG;

if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, updating the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG;

and sending the updated configuration information of the candidate SCG and the updated configuration information of the candidate MCG to the source MN.

11. The method according to any of claims 7-10, wherein the configuration information of the candidate secondary cell group, SCG, is used to indicate whether the conditional handover request confirm message contains configuration information of a candidate SCG.

12. A secondary cell configuration method, wherein the method is applied to a terminal device, and the method comprises:

configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

13. The method of claim 12, wherein the method further comprises:

if the primary and secondary cell switching conditions corresponding to the candidate SCG are not configured, when the candidate MN is accessed according to the configuration information of the candidate MCG, the candidate SCG is accessed according to the configuration information of the candidate SCG.

14. The method of claim 12, wherein the method further comprises:

if the primary and secondary cell switching conditions corresponding to the candidate SCG are configured, after the candidate MN is accessed according to the configuration information of the candidate MCG, the candidate SCG is accessed according to the configuration information of the candidate SCG when the primary and secondary cell switching conditions corresponding to the candidate SCG are met.

15. The method of claim 14, wherein the number of candidate SCGs is one or more, each candidate SCG corresponding to a primary-secondary cell handover condition.

16. A secondary cell group configuration apparatus, the apparatus comprising:

a sending unit, configured to send a conditional handover request message to a candidate primary base station MN;

a receiving unit, configured to receive a conditional handover request acknowledgement message from the candidate MN, where the conditional handover request acknowledgement message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

the sending unit is further configured to send configuration information of the candidate MCGs and configuration information of the candidate SCGs to a terminal device.

17. A secondary cell group configuration apparatus, the apparatus comprising:

A receiving unit, configured to receive a conditional handover request message from a source primary base station MN;

and a sending unit, configured to send a conditional handover request acknowledgement message to the source MN, where the conditional handover request acknowledgement message includes configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

18. A secondary cell group configuration apparatus, the apparatus comprising:

and the receiving unit is used for receiving the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source primary base station MN.

19. A chip comprising a processor and a communication interface, the processor configured to perform operations comprising:

sending a conditional switching request message to a candidate master base station MN;

20. A chip comprising a processor and a communication interface, the processor configured to perform operations comprising:

Receiving a conditional handoff request message from a source master base station MN;

21. A chip comprising a processor and a communication interface, the processor configured to perform operations comprising:

22. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and instructions;

the communication module is used for carrying out internal communication of module equipment or carrying out communication between the module equipment and external equipment;

the chip is used for: receiving a conditional handover request confirm message from the candidate MN, the conditional handover request confirm message including configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG; and sending the configuration information of the candidate MCGs and the configuration information of the candidate SCGs to terminal equipment.

23. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip, wherein:

the storage module is used for storing data and instructions;

the chip is used for: receiving a conditional handoff request message from a source master base station MN; and sending a conditional handover request confirmation message to the source MN, wherein the conditional handover request confirmation message comprises configuration information of the candidate primary cell group MCG and configuration information of the candidate secondary cell group SCG.

24. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip, wherein:

the storage module is used for storing data and instructions;

the chip is used for: configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN are received.

25. A base station comprising a memory for storing a computer program comprising program instructions and a processor configured to invoke the program instructions to perform the method of any of claims 1-6 or 7-11.

26. A terminal device comprising a memory for storing a computer program comprising program instructions and a processor configured to invoke the program instructions to perform the method of any of claims 12-15.

27. A computer readable storage medium having stored therein computer readable instructions which, when run on a communication device, cause the communication device to perform the method of any of claims 1-6 or 7-11 or cause the communication device to perform the method of any of claims 12-15.