CN114071612B

CN114071612B - Method, device and storage medium for updating primary cell of secondary cell group

Info

Publication number: CN114071612B
Application number: CN202010788021.XA
Authority: CN
Inventors: 严雪; 许萌; 陈瑞卡; 梁靖
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2023-08-01
Anticipated expiration: 2040-08-07
Also published as: WO2022028297A1; CN114071612A

Abstract

The application provides a method, a device and a storage medium for updating a primary cell of a secondary cell group, wherein the method comprises the following steps: the terminal equipment determines that a target cell needs to be updated into a PScell of the terminal equipment, wherein the current auxiliary cell group of the terminal equipment is in a suspension state, and/or the target state of the target auxiliary cell group is in a suspension state, and the PScell of the target auxiliary cell group is the target cell; the terminal device updates the target cell to the PSCell of the terminal device. A solution is provided for how a terminal device updates its PSCell in the case where there is a SCG in a suspended state.

Description

Method, device and storage medium for updating primary cell of secondary cell group

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a storage medium for updating a primary cell of a secondary cell group.

Background

In the multi-connection scenario, the terminal device and the plurality of network devices on the network side maintain connection states, and in the dual-connection scenario, the terminal device and the two network devices on the network side maintain connection states, which are a Master Node (MN) and a Secondary Node (SN), respectively. Wherein the MN configures a primary cell group (Master Cell Group, MCG) for the terminal device, the MCG comprising a primary cell (PCell) and zero to a plurality of secondary cells; the SN configures a secondary cell group (Secondary Cell Group, SCG) for the terminal device, the SCG also comprising a primary cell (PSCell) and zero to a plurality of secondary cells. The MN and SN can interact with the terminal device at the same time, and the terminal device can also perform radio resource management (Radio Resource Management, RRM) measurement on the MCG and SCG and report to the network side. If the network side determines to change or add the PCell/PSCell according to the RRM measurement of the terminal equipment, a corresponding command is sent to the terminal equipment, and the terminal equipment executes corresponding processing. Or if the terminal equipment determines that the conditions of pre-configured change or addition of the PCell/PSCell are met according to the RRM measurement, the terminal equipment executes corresponding change or addition of the PCell/PSCell.

Currently, in consideration of energy saving, in the case where the data transmission amount is small, the SCG may be set to a suspended state, and a state at this time may be referred to as a dorman SCG state or a suspend SCG state or a deactivate SCG state (deactivation). In the dormamnt/suspend/deactivation SCG state, the terminal device does not monitor PDCCH of SCG, does not transmit data with SN, but can perform RRM measurement on the SCG and report to the network side. In this case, how the terminal device performs the change or adds PSCell remains to be solved.

Disclosure of Invention

The application provides a primary cell updating method, a primary cell updating device and a storage medium for a secondary cell group, which are used for providing a solution for updating a PScell by a terminal device under the condition that SCG is in a dorman/suspend/deactivation state.

In a first aspect, the present application provides a primary cell update method of a secondary cell group, including:

the terminal equipment determines that a target cell needs to be updated into a PScell of the terminal equipment, wherein the current auxiliary cell group of the terminal equipment is in a suspension state, and/or the target state of the target auxiliary cell group is in a suspension state, and the PScell of the target auxiliary cell group is the target cell;

the terminal device updates the target cell to the PSCell of the terminal device.

Optionally, the terminal device updates the target cell to a PSCell of the terminal device, including:

the terminal equipment applies the configuration of the target auxiliary cell group to which the target cell belongs;

the terminal equipment and the target cell are downlink synchronized;

the terminal equipment accesses the target cell.

Optionally, the terminal device accesses the target cell, including:

the terminal equipment triggers a random access process to access a target cell;

the method further comprises the steps of: after the terminal equipment completes accessing the target cell, setting the auxiliary cell group of the terminal equipment to be in a suspended state, or setting the auxiliary cell group of the terminal equipment to be in an active state, or setting the auxiliary cell group of the terminal equipment to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

Optionally, before the terminal device updates the target cell to the PSCell of the terminal device, the method further includes: the terminal equipment activates the auxiliary cell group of the terminal equipment; or alternatively, the process may be performed,

before the terminal equipment accesses the target cell, the method further comprises the following steps: the terminal device activates the secondary cell group of the terminal device.

Optionally, the terminal device accesses the target cell, including:

after downlink synchronization with the target cell, the terminal equipment receives second information from the network equipment, wherein the second information is used for indicating the auxiliary cell group of the activated terminal equipment;

And the terminal equipment activates the auxiliary cell group of the terminal equipment according to the second information and triggers the random access process to access the target cell.

Optionally, before the terminal device updates the target cell to the PSCell of the terminal device, the method further includes:

before the terminal equipment determines that the target cell needs to be updated to be a PScell of the terminal equipment, the terminal equipment receives second information from the network equipment; or the terminal equipment receives the second information from the network equipment at the same time when the terminal equipment receives the third information from the network equipment;

the second information is used for indicating a secondary cell group of the active terminal equipment, and the third information is used for indicating the terminal equipment to update the target cell into a PScell of the terminal equipment;

and the terminal equipment activates the auxiliary cell group of the terminal equipment according to the second information.

Optionally, the terminal device determines that the target cell needs to be updated to be a PSCell of the terminal device, including:

the terminal equipment receives third information from the network equipment, determines that the target cell needs to be updated to be the PSCell of the terminal equipment according to the third information, and the third information is used for indicating the terminal equipment to update the target cell to be the PSCell of the terminal equipment; or alternatively, the process may be performed,

the terminal equipment receives fourth information from the network equipment, wherein the fourth information is used for indicating the condition of updating the PSCell by the terminal equipment, and if the measurement result of the evaluation target cell meets the condition of updating the PSCell by the terminal equipment, the terminal equipment determines that the target cell needs to be updated to the PSCell of the terminal equipment.

Optionally, the terminal device receives fourth information from the network device, where the fourth information is used to instruct the terminal device to update the PSCell, and accordingly, the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device, including:

and the terminal equipment reports the cell identification information of the target cell to the network equipment.

Optionally, the method further comprises:

the terminal equipment receives fifth information from the network equipment, wherein the fifth information is used for indicating configuration information of a target cell group to which the target cell belongs;

if the fifth information does not include the third information, the terminal device applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs.

Optionally, before the terminal device determines that the target cell needs to be updated to be the PSCell of the terminal device, the method further includes:

the terminal equipment receives second information from the network equipment, wherein the second information is used for indicating the auxiliary cell group of the activated terminal equipment; before receiving the second information, the terminal device stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell;

after receiving the second information from the network equipment, the terminal equipment activates a secondary cell group of the terminal equipment according to the second information and evaluates whether a measurement result of the target cell meets the condition that the terminal equipment updates the PScell;

The terminal device determines that the target cell needs to be updated to be a PSCell of the terminal device, including: if the measurement result of the evaluation target cell meets the condition of updating the PSCell by the terminal equipment, the terminal equipment determines that the target cell needs to be updated to the PSCell of the terminal equipment.

In a second aspect, the present application provides a primary cell update method of a secondary cell group, including:

the network equipment generates second information, wherein the second information is used for indicating an auxiliary cell group of the active terminal equipment, the current auxiliary cell group of the terminal equipment is in a suspension state, and/or the target state of a target auxiliary cell group is in a suspension state, and the PScell of the target auxiliary cell group is a target cell;

the network device sends the second information to the terminal device.

Optionally, the method further comprises:

the network device sends first information to the terminal device, wherein the first information is used for indicating that the secondary cell group of the terminal device is in a target state after the terminal device updates the target cell into the PScell of the terminal.

Optionally, before the network device generates the second information, the method further includes:

the network device determines that the terminal device needs to update the target cell to the PSCell of the terminal device.

Optionally, the method further comprises:

the network equipment simultaneously sends third information to the terminal equipment when sending the second information to the terminal equipment; or alternatively, the process may be performed,

The network equipment sends third information to the terminal equipment after sending the second information to the terminal equipment;

the third information is used for indicating the terminal equipment to update the target cell into the PScell of the terminal equipment.

Optionally, before the network device determines that the terminal device needs to update the target cell to the PSCell of the terminal device, the method further includes:

the network equipment receives the cell identification information of the target cell reported by the terminal equipment;

the network device determining that the terminal device needs to update the target cell to be the PSCell of the terminal device includes:

and the network equipment determines the PScell for updating the target cell into the terminal equipment according to the cell identification information of the target cell.

Optionally, before the network device sends the second information to the terminal device, the method further includes:

the network device sends fourth information to the terminal device, where the fourth information is used to instruct the terminal device to update the PSCell condition.

In a third aspect, the present application provides a primary cell update apparatus of a secondary cell group, comprising a memory, a transceiver, and a processor:

a memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

a processor for reading the computer program in the memory and performing the following operations:

Determining that a target cell needs to be updated into a PScell of the terminal equipment, wherein the current auxiliary cell group of the terminal equipment is in a suspension state, and/or the target state of the target auxiliary cell group is in a suspension state, and the PScell of the target auxiliary cell group is the target cell;

updating the target cell to the PScell of the terminal equipment.

Optionally, updating the target cell to be the PSCell of the terminal device includes:

applying the configuration of a target auxiliary cell group to which a target cell belongs;

downlink synchronization with a target cell;

and accessing the target cell.

Optionally, accessing the target cell includes:

triggering a random access process to access a target cell;

the processor also performs the following operations: after the access to the target cell is completed, the auxiliary cell group of the terminal equipment is set to be in a suspended state, or the auxiliary cell group of the terminal equipment is set to be in an active state, or the auxiliary cell group of the terminal equipment is set to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

Optionally, the processor further performs the following operations:

before updating a target cell into a PScell of a terminal device, activating a secondary cell group of the terminal device; or alternatively, the process may be performed,

before accessing the target cell, the secondary cell group of the terminal device is activated.

Optionally, accessing the target cell includes:

after downlink synchronization with the target cell, receiving second information from the network device, where the second information is used to indicate a secondary cell group of the active terminal device;

and activating the secondary cell group of the terminal equipment according to the second information, and triggering a random access process to access the target cell.

Optionally, the processor further performs the following operations:

before determining that the target cell needs to be updated as a PSCell of the terminal device, receiving second information from the network device; or before updating the target cell into the PScell of the terminal equipment, receiving the third information from the network equipment at the same time;

and activating the secondary cell group of the terminal equipment according to the second information.

Optionally, determining that the target cell needs to be updated to the PSCell of the terminal device includes:

receiving third information from the network equipment, and determining that the target cell needs to be updated to the PScell of the terminal equipment according to the third information, wherein the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment; or alternatively, the process may be performed,

And receiving fourth information from the network equipment, wherein the fourth information is used for indicating the condition of updating the PSCell by the terminal equipment, and if the measurement result of the evaluation target cell meets the condition of updating the PSCell by the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

Optionally, the terminal device receives fourth information from the network device, which is used for indicating a condition that the terminal device updates the PSCell, and accordingly, determines that the target cell needs to be updated to the PSCell of the terminal device, including:

and reporting the cell identification information of the target cell to the network equipment.

Optionally, the processor further performs the following operations:

receiving fifth information from the network device, wherein the fifth information is used for indicating configuration information of a target cell group to which the target cell belongs;

and if the fifth information does not comprise the third information, applying the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs.

Optionally, the current secondary cell group of the terminal device is in a suspended state, and the processor further performs the following operations:

before determining that the target cell needs to be updated to the PScell of the terminal equipment, receiving second information from the network equipment, wherein the second information is used for indicating a secondary cell group of the activated terminal equipment; wherein before receiving the second information, stopping evaluating whether the measurement result of the target cell meets a condition that the terminal device updates the PSCell;

After receiving the second information from the network device, activating the secondary cell group of the terminal device according to the second information, and evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PScell;

determining a PSCell that needs to update a target cell to a terminal device includes: if the measurement result of the evaluation target cell meets the condition of updating the PSCell by the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

In a fourth aspect, the present application provides a primary cell update apparatus of a secondary cell group, comprising a memory, a transceiver, and a processor:

a memory for storing a computer program;

a transceiver for transceiving data under the control of the processor;

generating second information, wherein the second information is used for indicating an auxiliary cell group of the active terminal equipment, the current auxiliary cell group of the terminal equipment is in a suspension state, and/or the target state of a target auxiliary cell group is in a suspension state, and the PScell of the target auxiliary cell group is a target cell;

and sending the second information to the terminal equipment.

Optionally, the processor further performs the following operations:

and sending first information to the terminal equipment, wherein the first information is used for indicating the secondary cell group of the terminal equipment to be in a target state after the terminal equipment updates the target cell into the PScell of the terminal.

Optionally, the processor further performs the following operations:

before generating the second information, it is determined that the terminal device needs to update the target cell to the PSCell of the terminal device.

Optionally, the processor further performs the following operations:

simultaneously transmitting third information to the terminal device while transmitting the second information to the terminal device; or alternatively, the process may be performed,

after the second information is sent to the terminal equipment, third information is sent to the terminal equipment;

Optionally, the processor further performs the following operations:

before determining that the terminal equipment needs to update the target cell into the PScell of the terminal equipment, receiving cell identification information of the target cell reported by the terminal equipment;

determining that the terminal device needs to update the target cell to the PSCell of the terminal device includes:

and determining the PScell for updating the target cell to the terminal equipment according to the cell identification information of the target cell.

Optionally, the processor further performs the following operations:

before sending the second information to the terminal device, sending fourth information to the terminal device, where the fourth information is used to instruct the terminal device to update the PSCell condition.

In a fifth aspect, the present application provides a primary cell update apparatus of a secondary cell group, including:

A determining unit, configured to determine that a target cell needs to be updated to a PSCell of a terminal device, where a current secondary cell group of the terminal device is in a suspended state, and/or a target state of a target secondary cell group is in a suspended state, and the PSCell of the target secondary cell group is a target cell;

and the processing unit is used for updating the target cell into the PScell of the terminal equipment.

Optionally, the processing unit is specifically configured to:

downlink synchronization with a target cell;

and accessing the target cell.

Optionally, accessing the target cell includes:

triggering a random access process to access a target cell;

the processing unit is further configured to: after the access to the target cell is completed, the auxiliary cell group of the terminal equipment is set to be in a suspended state, or the auxiliary cell group of the terminal equipment is set to be in an active state, or the auxiliary cell group of the terminal equipment is set to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

Optionally, the processing unit is further configured to activate the secondary cell group of the terminal device before updating the target cell to be the PSCell of the terminal device; or alternatively, the process may be performed,

the processing unit is further configured to activate the secondary cell group of the terminal device before accessing the target cell.

Optionally, accessing the target cell includes:

Optionally, the apparatus further comprises a receiving unit;

a receiving unit, configured to receive second information from the network device before the processing unit determines that the target cell needs to be updated to the PSCell of the terminal device; or before the processing unit updates the target cell to the PSCell of the terminal device, receiving the second information from the network device at the same time when the third information from the network device is received;

and the processing unit is also used for activating the auxiliary cell group of the terminal equipment according to the second information.

Optionally, the determining unit is specifically configured to:

Optionally, the terminal device receives fourth information from the network device, which is used for indicating a condition that the terminal device updates the PSCell, and accordingly, determines that the target cell needs to be updated to the PSCell of the terminal device, including: and reporting the cell identification information of the target cell to the network equipment.

Optionally, the apparatus further comprises a receiving unit;

a receiving unit, configured to receive fifth information from a network device, where the fifth information is configured to indicate configuration information of a target cell group to which a target cell belongs;

and the processing unit is further used for applying the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs by the terminal equipment if the fifth information does not comprise the third information.

Optionally, the apparatus further comprises a receiving unit;

the current auxiliary cell group of the terminal equipment is in a suspension state, and the receiving unit is further used for receiving second information from the network equipment before the determining unit determines that the target cell needs to be updated into the PScell of the terminal equipment, wherein the second information is used for indicating to activate the auxiliary cell group of the terminal equipment; the processing unit stops evaluating whether the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell before the receiving unit receives the second information;

The processing unit is further used for activating the auxiliary cell group of the terminal equipment according to the second information after the receiving unit receives the second information from the network equipment, and evaluating whether the measurement result of the target cell meets the condition that the terminal equipment updates the PScell;

the determining unit is specifically configured to: if the processing unit evaluates that the measurement result of the target cell meets the condition of updating the PSCell of the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

In a sixth aspect, the present application provides a primary cell update apparatus of a secondary cell group, including:

the processing unit is used for generating second information, the second information is used for indicating the secondary cell group of the active terminal equipment, wherein the current secondary cell group of the terminal equipment is in a suspension state, and/or the target state of the target secondary cell group is in a suspension state, and the PScell of the target secondary cell group is a target cell;

and the sending unit is used for sending the second information to the terminal equipment.

Optionally, the sending unit is further configured to send first information to the terminal device, where the first information is used to instruct the terminal device to update the target cell to the PSCell of the terminal, and the secondary cell group of the terminal device is the target state.

Optionally, the processing unit is further configured to determine, before generating the second information, that the terminal device needs to update the target cell to the PSCell of the terminal device.

Optionally, the sending unit is further configured to:

Optionally, the apparatus further comprises a receiving unit;

a receiving unit, configured to receive, before the processing unit determines that the terminal device needs to update the target cell to the PSCell of the terminal device, cell identification information of the target cell reported by the terminal device;

Optionally, the sending unit is further configured to send fourth information to the terminal device, where the fourth information is used to instruct the terminal device to update a condition of the PSCell.

In a seventh aspect, the present application provides a processor-readable storage medium storing a computer program for causing a processor to perform the method of the first or second aspect.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the first aspect as described above or the method of the second aspect as described above.

In a ninth aspect, the present application provides a primary cell update system of a secondary cell group, comprising a network device as described in any one of the above and a terminal device as described in any one of the above.

The application provides a primary cell updating method, a primary cell updating device and a storage medium of a secondary cell group, if the current SCG of a terminal device is in a suspension state and/or the target state of a target SCG is in a suspension state, the PSCell of the target secondary cell group is the target cell, and after the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device, the terminal device updates the target cell to the PSCell of the terminal device, so that a solution is provided for how the terminal device updates the PSCell of the terminal device under the condition that the SCG is in the suspension state.

It should be appreciated that what is described in the foregoing summary section is not intended to limit key or critical features of embodiments of the present application nor is it intended to be used to limit the scope of the present application. Other features of the present application will become apparent from the description that follows.

Drawings

For a clearer description of the technical solutions of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a flowchart of a primary cell update method of a secondary cell group according to an embodiment of the present application;

fig. 3 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application;

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

fig. 5 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application;

fig. 6 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application;

fig. 7 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application;

fig. 8 is a schematic diagram of a primary cell update apparatus of a secondary cell group according to an embodiment of the present application;

Fig. 9 is a schematic diagram of a primary cell update apparatus of a secondary cell group according to another embodiment of the present application;

fig. 10 is a schematic diagram of a primary cell update apparatus of a secondary cell group according to another embodiment of the present application;

fig. 11 is a schematic diagram of a primary cell update apparatus of a secondary cell group according to another embodiment of the present application.

Detailed Description

The term "and/or" in this application describes an association relationship of an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The embodiment of the application provides a primary cell updating method, a primary cell updating device and a storage medium of a secondary cell group, aiming at a multi-connection scene, the current SCG of a terminal device is in a suspension state or the target state of a target secondary cell group is in a suspension state, the PScell of the target secondary cell group is the target cell, when the terminal device determines that the target cell is to be updated into the PScell of the terminal device, the terminal device can update the target cell into the PScell of the terminal device so as to realize that the target cell is updated into the PScell of the terminal device when the SCG is in the suspension state, and the problems in the prior art are solved.

The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be 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) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and the embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for a terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), and the like. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may each be made between a network device and a terminal device using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application, as shown in fig. 1, the embodiment provides a communication system, where the communication system includes a network device and a terminal device, and the embodiment uses one of the terminal devices as an example. The terminal equipment is in a multi-connection scene, and the terminal equipment establishes connection with a plurality of network equipment. Fig. 1 illustrates a dual connectivity scenario in which a terminal device establishes connectivity with two network devices, one being a primary network device (also referred to as MN) and the other being a secondary network device (also referred to as SN), respectively. Wherein the MN configures an MCG for the terminal device, the MCG including a primary cell (PCell) and zero to a plurality of secondary cells. The SN configures the terminal device with an SCG that also includes a primary cell (PSCell) and zero to a plurality of secondary cells. The MN and the SN can perform data interaction with the terminal equipment at the same time, and the terminal equipment can also perform RRM measurement on the MCG and the SCG and report the RRM measurement to a network side. In the case where the data transmission amount is small, the SCG may be set to a suspended state, and the state at this time may be referred to as a dorman SCG or a suspend SCG or a deactivation SCG state. In the dormamnt/suspend/deactivation SCG state, the terminal device does not monitor PDCCH of SCG, does not transmit data with SN, but can perform RRM measurement on the SCG and report to the network side.

In the following, with various embodiments, how to update the PSCell of the terminal device is described in the case where the SCG of the terminal device is a dorman SCG or a suspend SCG or a deactivation SCG.

Fig. 2 is a flowchart of a primary cell update method of a secondary cell group according to an embodiment of the present application, where, as shown in fig. 2, the method of the present embodiment may include:

s201, the terminal device determines that the target cell needs to be updated to be the PSCell of the terminal device. The current SCG of the terminal equipment is in a suspension state, and/or the target state of the target SCG is in a suspension state, and the PScell of the target auxiliary cell group is the target cell.

The suspended state (suspend state) may also be referred to as an SCG sleep state (dorman state) or an SCG deactivation state (deactivation state), and the SCG in the suspended state may also be referred to as a dorman SCG or a suspend SCG or a deactivation SCG.

In this embodiment, the target cell is updated to be the PSCell of the terminal device, which may be that the PSCell in the current SCG is changed to be the target cell; alternatively, the target cell may be added as a PSCell of the terminal device, that is, the terminal device adds an SCG, where the PSCell in the SCG is the target cell.

In one possible implementation, the terminal device receives third information sent by the network device, where the third information is used to instruct the terminal device to update the target cell to the PSCell of the terminal device. This third information may be referred to as update indication information, for example. And the terminal equipment determines that the target cell needs to be updated to the PScell of the terminal equipment according to the third information. Optionally, the third information may include PSCell, which is used to indicate that the target state of the target SCG is a suspension state, and the target secondary cell group is a target cell.

In another possible implementation manner, the terminal device performs RRM measurement to obtain measurement results of one or more candidate cells (including the target cell), evaluates whether the measurement results of each candidate cell meet the condition that the terminal device updates the PSCell, if so, determines that the terminal device needs to update the PSCell of the terminal device, and determines that the candidate cell meeting the condition is the target cell that needs to be updated to the PSCell of the terminal device. Optionally, before evaluating whether the measurement result of each candidate cell meets the condition that the terminal device updates the PSCell, the terminal device further receives fourth information sent by the network device, where the fourth information is used to instruct the terminal device to update the condition of the PSCell. This fourth information may be referred to as conditional configuration information, for example. The conditions for updating the PSCell by the terminal equipment include: the terminal device changes the conditions of the PSCell and/or the conditions of the terminal device adding the PSCell.

In another possible implementation manner, the terminal device performs RRM measurement to obtain measurement results of one or more candidate cells (including the target cell), evaluates whether the measurement results of each candidate cell meet the condition of updating the PSCell by the terminal device, and if the target cell meets the condition of updating the PSCell by the terminal device, sends the identification information of the target cell to the network device. Accordingly, the network device receives the identification information of the target cell, and acquires that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, so that the terminal device is determined to need to update the target cell into the PSCell of the terminal device. The network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell into the PSCell of the terminal device. And the terminal equipment determines that the target cell needs to be updated to be the PScell according to the third information. Optionally, the third information is sent to the terminal device when the network device needs to activate the SCG of the terminal device.

S202, the terminal equipment updates the target cell into the PScell of the terminal equipment.

In this embodiment, the current SCG of the terminal device is in a suspension state, or the target state of the target SCG is in a suspension state, or the current SCG of the terminal device is in a suspension state and the target state of the target SCG is in a suspension state, and after the terminal device determines that the target cell needs to be updated to be the PSCell of the terminal device, the terminal device updates the target cell to be the PSCell of the terminal device.

According to the primary cell updating method of the secondary cell group, if the current SCG of the terminal equipment is in the suspension state and/or the target state of the target SCG is in the suspension state, the PSCell of the target secondary cell group is the target cell, and after the terminal equipment determines that the target cell needs to be updated to the PSCell of the terminal equipment, the terminal equipment updates the target cell to the PSCell of the terminal equipment, so that a solution is provided for how the terminal equipment updates the PSCell of the terminal equipment under the condition that the SCG is in the suspension state.

On the basis of the embodiment shown in fig. 2, in a possible implementation manner, after the terminal device determines that the target cell needs to be updated to the terminal device PSCell, the terminal device applies the configuration of the target SCG to which the target cell belongs, for example, the terminal device applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs, where the configuration information of the target cell group is received by the terminal device from the network device. And the terminal equipment is in downlink synchronization with the target cell and is accessed into the target cell to establish communication connection between the terminal equipment and the target cell, so that the terminal equipment can update the target cell into the PScell of the terminal equipment.

Fig. 3 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application, where, as shown in fig. 3, the method of the present embodiment may include:

s301, the terminal equipment determines that a target cell needs to be updated to be a PScell of the terminal equipment. The current SCG of the terminal equipment is in a suspension state, and/or the target state of the target SCG is in a suspension state, and the PScell of the target auxiliary cell group is the target cell.

S302, the terminal equipment applies the configuration of the target SCG to which the target cell belongs.

S303, the terminal equipment and the target cell are in downlink synchronization.

S304, the terminal equipment accesses to the target cell.

S305, after the terminal equipment completes the access to the target cell, setting the SCG of the terminal equipment to be in a suspended state, or setting the SCG of the terminal equipment to be in an active state, or setting the SCG of the terminal equipment to be in a target state according to the first information. The first information is used for indicating that SCG of the terminal equipment is in a target state.

In this embodiment, the terminal device applies the configuration of the target SCG to which the target cell belongs, and then performs downlink synchronization with the target cell and triggers a random access procedure to access the target cell. After the terminal device completes accessing the target cell, the terminal device sets the SCG of the terminal device (at this time, the terminal device has updated the target cell to be PSCell, so the SCG is that the target SCG includes the target cell to be PSCell), for example, the SCG of the terminal device may be set to a suspended state, that is, the SCG is set to dorman/suspend/deactivation SCG. Or the terminal device sets the SCG of the terminal device to be in an SCG activation state. Or the terminal device sets the SCG of the terminal device to be in a target state according to the first information, wherein the first information is used for indicating that the SCG of the terminal device is in the target state. If the target state indicated by the first information is in a suspended state, the terminal device sets the SCG to be in the suspended state according to the first information, and if the target state indicated by the first information is in an active state, the terminal device sets the SCG to be in the active state according to the first information.

Alternatively, the first information may be included in the terminal device receiving the above-mentioned third information from the network device, or the first information may be included in the terminal device receiving the above-mentioned fourth information from the network device.

In the primary cell update method of the secondary cell group provided in this embodiment, if the current SCG of the terminal device (that is, the SCG of the terminal device before the terminal device updates the target cell to be the PSCell) is dorant/suspend/deactivation SCG, after the terminal device updates the target cell to be the PSCell, the SCG is set to be dorant/suspend/deactivation SCG, so that the state of the SCG of the terminal device before and after the terminal device completes updating the target cell to be the PSCell is the same; or after updating the target cell to be the PScell, the terminal equipment sets the SCG to be in an active state, so that the terminal equipment can perform data transmission with the new SCG in time. Or if the terminal equipment receives the first information indicating the target state of the SCG of the terminal equipment, after the terminal equipment updates the target cell to be the PScell, setting the SCG as the target state according to the first information so as to ensure that the state of the SCG is consistent with the indicated target state.

Optionally, in one possible implementation manner, S302a may also be performed before performing S302 described above:

S302a, the terminal equipment activates SCG of the terminal equipment.

In this embodiment, after determining that the target cell needs to be updated to be the PSCell of the terminal device, the terminal device activates the SCG of the terminal device. When the SCG of the terminal device is in an active state, for example, the current SCG of the terminal device is in an active state, or the target SCG to which the target cell belongs is in an active state, the terminal device updates the target cell to be the PSCell. The SCG of the terminal equipment is ensured to be in an activated state and then the target cell is updated to be the PScell.

Optionally, in another possible implementation manner, before performing S304, S304a is further included:

s304a, the terminal equipment activates SCG of the terminal equipment.

In this embodiment, after determining that the target cell needs to be updated to be the PSCell of the terminal device, the terminal device applies the configuration of the target SCG to which the target cell belongs, and then performs downlink synchronization with the target cell. After the terminal equipment and the target cell are downlink synchronized, the terminal equipment activates the SCG of the terminal equipment, for example, the terminal equipment changes the current SCG from the suspension state to the activation state, or sets the target SCG to which the target cell belongs to the activation state. When the SCG of the terminal equipment is in an activated state, the terminal equipment is accessed into the target cell again to finish updating the target cell into the PScell.

Alternatively, the terminal device may directly activate the SCG of the terminal device after downlink synchronization with the target cell, i.e. directly perform S304a after S303.

Optionally, before executing S304a, the terminal device further includes S304b:

s304b, the terminal equipment receives second information from the network equipment after downlink synchronization with the target cell.

In this embodiment, after the terminal device performs downlink synchronization with the target cell, the terminal device does not temporarily access the target cell, but sends second information to the terminal device, and if the terminal device receives the second information from the network device, the second information is used to instruct to activate the SCG of the terminal device, and the terminal device activates the SCG of the terminal device according to the second information when executing S304a. And then the terminal equipment triggers the random access process to access the target cell. Therefore, the network device instructs the terminal device to activate the SCG, which means that the terminal device may need to transmit data through the SCG, and the terminal device accesses the target cell again, so as to ensure that the terminal device can transmit data in time.

Fig. 4 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application, and as shown in fig. 4, the method of the present embodiment may include:

S401, the terminal equipment receives second information from the network equipment.

In this embodiment, the current SCG of the terminal device is in a suspended state, and/or the target state of the target SCG is in a suspended state, and the PSCell of the target secondary cell group is the target cell, and the network device generates second information, where the second information is used to indicate to activate the SCG of the terminal device. Correspondingly, the terminal equipment receives the second information sent by the network equipment.

S402, the terminal equipment activates SCG of the terminal equipment according to the second information.

In this embodiment, the terminal device receives the second information and activates the SCG of the terminal device.

Optionally, after determining that the terminal device needs to update the target cell to the PSCell of the terminal device, the network device sends second information to the terminal device, so that the terminal device activates the SCG of the terminal device.

S403, the terminal equipment receives third information from the network equipment.

In this embodiment, after activating the SCG of the terminal device, if the network device determines that the terminal device needs to update the target cell to be the PSCell of the terminal device, the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell to be the PSCell of the terminal device.

Alternatively, the third information may be carried in a reconfiguration message about SCG sent by the network device to the terminal device.

Optionally, the network device sends the third information to the terminal device after determining that the terminal device needs to update the target cell to the PSCell of the terminal device. Optionally, the terminal device reports the identification information of the target cell to the network device, and the network device determines that the terminal device needs to update the target cell to be the PSCell of the terminal device according to the identification information of the target cell reported by the terminal device. Optionally, after determining that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, the terminal device reports the identification information of the target cell to the network device.

Optionally, after determining that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, the terminal device reports the identification information of the target cell to the network device. When the network device is to activate the SCG of the terminal device, the network device sends the second information to the terminal device and then sends the third information to the terminal device.

S404, the terminal equipment determines that the target cell needs to be updated to the PScell of the terminal equipment according to the third information.

S405, the terminal device updates the target cell to the PSCell of the terminal device.

Herein, S405 may be referred to the description in the above related embodiments, and will not be described herein.

According to the primary cell updating method of the secondary cell group, the network equipment instructs the terminal equipment to activate the SCG, then when the SCG of the terminal equipment is in an activated state, the network equipment instructs the terminal equipment to update the target cell into the PScell of the terminal equipment, and when the SCG of the terminal equipment is in the activated state, the target cell is ensured to be updated into the PScell of the terminal equipment.

Fig. 5 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application, where, as shown in fig. 5, the method of the present embodiment may include:

s501, the terminal equipment receives the second information and the third information from the network equipment at the same time.

In this embodiment, the current SCG of the terminal device is in a suspension state, and/or the target state of the target SCG is in a suspension state, the PSCell of the target secondary cell group is a target cell, and the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell into the PSCell of the terminal device. And the network device sends the third information to the terminal device and also sends the second information to the terminal device, wherein the second information is used for indicating to activate the SCG of the terminal device. Accordingly, the terminal device receives the second information and the third information from the network device at the same time.

Optionally, the second information and the third information are carried in a reconfiguration message about SCG sent by the network device to the terminal device.

Alternatively, the second information may be carried in a MAC CE or DCI sent by the network device to the terminal device. The MAC CE or DCI may be located in the same TB as the third information.

Alternatively, the second information may be included in the third information. Specifically, the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell to be the PSCell of the terminal device, the third information includes the second information, and after the terminal device receives the third information from the network device, the following S502-S504 are executed.

In another possible implementation manner, if the third information includes information for indicating that the target SCG including the target cell as the PSCell is in an active state, the information may be regarded as second information indicating that the SCG of the terminal device is activated. Specifically, the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell into the PSCell of the terminal device, and the third information does not include the second information, but includes information that is used to instruct the SCG including the target cell as the PSCell to be in an active state. After receiving the third information from the network device, the terminal device activates the SCG of the terminal device according to the information indicating that the target SCG is in the activated state in the third information, and performs the following S503-S504.

Optionally, in a possible alternative manner of S501, the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to update the target cell into the PSCell of the terminal device, and the third information does not include the second information. After the terminal device receives the third information from the network device, the terminal device may consider that the SCG of the terminal device needs to be activated according to the third information, and then activate the SCG of the terminal device and perform the following S503-S504.

Optionally, the network device sends the third information and the second information to the terminal device after determining that the terminal device needs to update the target cell to the PSCell of the terminal device. Optionally, the terminal device reports the identification information of the target cell to the network device, and the network device determines that the terminal device needs to update the target cell to be the PSCell of the terminal device according to the identification information of the target cell reported by the terminal device. Optionally, after determining that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, the terminal device reports the identification information of the target cell to the network device.

Optionally, after determining that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, the terminal device reports the identification information of the target cell to the network device. When the network device is to activate the SCG of the terminal device, the network device transmits the second information to the terminal device and simultaneously transmits the third information to the terminal device.

S502, the terminal equipment activates SCG of the terminal equipment according to the second information.

S503, the terminal equipment determines that the target cell needs to be updated to be the PScell of the terminal equipment according to the third information.

The execution order of S502 and S503 may not be limited.

S504, the terminal equipment updates the target cell into the PScell of the terminal equipment.

According to the primary cell updating method of the secondary cell group, the network equipment instructs the terminal equipment to activate the SCG while instructing the terminal equipment to update the target cell into the PScell of the terminal equipment, so that the target cell is updated to the PScell of the terminal equipment when the SCG of the terminal equipment is in an activated state.

Optionally, the third information is included in the fifth information received by the terminal from the network device, where the fifth information is used to indicate configuration information of the target cell group to which the target cell belongs, on the basis of the embodiment shown in fig. 4 or fig. 5. Specifically, the terminal device receives the fifth information sent by the network device, where the fifth information includes the third information, or the terminal device receives the fifth information and the third information at the same time, and in the process of updating the target cell to the PSCell of the terminal device, the terminal device applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs, and then performs downlink synchronization with the target cell and accesses the target cell. Optionally, the fifth message is carried in a reconfiguration message about SCG sent by the network device to the terminal device.

Fig. 6 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application, where, as shown in fig. 6, the method of the present embodiment may include:

s601, the terminal equipment receives fifth information from the network equipment.

In this embodiment, the current SCG of the terminal device is in a suspended state, and the network device sends fifth information to the terminal device, where the fifth information is used to indicate configuration information of a target cell group to which the target cell belongs.

The fifth information does not include third information, where the third information is used to instruct the terminal device to update the target cell to the PSCell of the terminal device. Or the terminal device receives the fifth information from the network device and does not receive the third information from the network device.

S602, the terminal equipment applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs.

In this embodiment, since the fifth information received by the terminal device does not include the third information, or the terminal device does not receive the third information when receiving the fifth information, the terminal device applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs. The terminal device also continues to maintain the SCG in a suspended state.

In the primary cell updating method of the secondary cell group provided in this embodiment, when the fifth information received by the terminal device does not include the third information, the terminal device applies the configuration of the target cell group to which the target cell belongs and maintains the SCG of the terminal device in a suspended state according to the configuration information of the target cell group to which the target cell belongs.

Fig. 7 is a flowchart of a primary cell update method of a secondary cell group according to another embodiment of the present application, where as shown in fig. 7, a current SCG of a terminal device is in a suspended state, and the method of this embodiment may include:

s701, before the terminal device receives the second information, it stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell.

In this embodiment, the current SCG of the terminal device is in a suspended state, and the terminal device stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell. Before the terminal device receives the second information, the terminal device maintains the condition that whether the measurement result of the target cell meets the updating of the PSCell by the terminal device is not evaluated.

S702, the terminal equipment receives second information from the network equipment.

In this embodiment, when the network device determines that the SCG of the terminal device needs to be activated, the network device sends second information to the terminal device, where the second information is used to indicate to activate the SCG of the terminal device. Correspondingly, the terminal equipment receives the second information sent by the network equipment.

S703, the terminal equipment activates SCG of the terminal equipment according to the second information.

In this embodiment, after receiving the second information from the network device, the terminal device activates the SCG of the terminal device according to the second information, for example, changes the current SCG of the terminal device from the suspended state to the activated state.

S704, the terminal equipment evaluates whether the measurement result of the target cell meets the condition of updating the PSCell of the terminal equipment, if so, the terminal equipment determines that the target cell needs to be updated into the PSCell of the terminal equipment.

In this embodiment, when the SCG of the terminal device is in an active state, the terminal device evaluates whether the measurement result of each candidate cell (including the target cell) meets the condition of updating the PSCell of the terminal device, and if the measurement result of the evaluation target cell meets the condition of updating the PSCell of the terminal device, the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device.

S705, the terminal device updates the target cell to the PSCell of the terminal device.

In this embodiment, S705 may be referred to the description in the above related embodiments, and will not be repeated here.

According to the primary cell updating method of the secondary cell group, before SCG of the terminal equipment is not activated, the terminal equipment stops evaluating whether the measurement result of the target cell meets the condition of updating the PSCell of the terminal equipment or not, and until the network equipment instructs the terminal equipment to activate SCG of the terminal equipment, the terminal equipment activates the SCG and starts evaluating whether the measurement result of the target cell meets the condition of updating the PSCell of the terminal equipment or not. And if the terminal equipment determines that the target cell needs to be updated to be the PScell of the terminal equipment according to the evaluation result, the target cell is updated to be the PScell of the terminal equipment. To ensure that the target cell is updated to the PScell of the terminal equipment when the SCG of the terminal equipment is in an active state.

Optionally, after updating the target cell to the PSCell of the terminal device by the terminal device on the basis of any embodiment of fig. 4 to fig. 7, setting the SCG of the terminal device to a suspended state, or setting the SCG of the terminal device to an active state, or setting the SCG of the terminal device to a target state according to first information, where the first information is used to indicate that the SCG of the terminal device is the target state.

The present application is described below using several specific embodiments, with a terminal device being described as an example of a UE.

When the UE is configured with the dorman/suspend/deactivation SCG, it means that the current SCG of the UE is in the dorman/suspend/deactivation state, which can be described as follows in embodiment 1 to embodiment 3, respectively.

Embodiment 1: the UE does not have the synchronous reconfiguration message in the reconfiguration message sent by the network side.

Step 1.1: the network side configures 2 nodes, 1 Main Node (MN) and 1 auxiliary node (SN) for the UE, wherein the state of the SCG of the SN side is dorman/suspend/deactivation state.

Step 1.2: the network side (such as MN) sends a reconfiguration message to the UE, which is a reconfiguration message for SCG.

Step 1.3: when the UE receives a synchronization reconfiguration message without an SCG in a reconfiguration message sent by the network side, the synchronization reconfiguration message of the SCG is used to indicate to update a PSCell (PSCell change or PSCell addition). The UE applies the new configuration, e.g. the UE applies the new configuration according to the configuration information in the reconfiguration message. And the terminal device maintains the SCG in the dorman/suspend/deactivation state.

In this embodiment, when the SCG of the terminal device is in the dorman/suspend/deactivation state, the network device does not send a command to the terminal device, which instructs the terminal device to update the PSCell. When the SCG of the terminal device is in an active state, the network device instructs the terminal device to perform PSCell change or PSCell addition.

Embodiment 2: the UE receives a PSCell change command in a reconfiguration message sent by a network side, and the PSCell change command instructs the terminal equipment to change the PSCell of the terminal equipment.

Step 2.1: the network side configures 2 nodes, 1 Main Node (MN) and 1 auxiliary node (SN) for the UE, wherein the SCG state of the SN side is dorman/suspend/deactivation state.

Step 2.2: the network side (such as MN) sends a reconfiguration message to the UE.

Step 2.3: the UE receives a PSCell change command with an SCG side in a reconfiguration message sent by a network side, where PSCell after the UE performs PSCell change may be referred to as a target cell. The UE performing the PSCell change procedure includes the following implementations:

in a first possible implementation, the UE applies the new configuration to complete downlink synchronization with the target cell, but the UE does not immediately perform a random access procedure on the target cell, but performs a random access procedure when the network side activates the SCG of the UE, thereby completing the PSCell change procedure.

In a second possible implementation, the UE applies the new configuration, completes downlink synchronization with the target cell and immediately performs a random access procedure on the target cell. Setting the SCG of the UE to a dorman/suspend/deactivation state after the UE randomly accesses the target cell.

In a third possible implementation, the UE applies the new configuration, completes downlink synchronization with the target cell and immediately performs a random access procedure on the target cell, and activates the SCG of the UE. After the UE completes PSCell change, the terminal device SCG is in an active state.

In a fourth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an activated state, and the UE applies the new configuration again, so as to complete downlink synchronization with the target cell and immediately execute a random access procedure on the target cell. After the UE completes the random access process, the SCG of the UE is reset to the dorman/suspend/deactivation state. The state of the SCG of the UE is made the same when the UE receives the PSCell change command as after the PSCell change is completed.

In a fifth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an active state, and the UE applies the new configuration again, completes downlink synchronization with the target cell, immediately performs a random access procedure on the target cell, and then maintains the SCG of the UE in an active state. So, while the SCG is in the dorman/suspend/deactivation state when the UE receives the PSCell change command, the SCG of the UE is in the active state after the UE completes PSCell change.

In a sixth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an activated state, and the UE applies the new configuration again, so as to complete downlink synchronization with the target cell and immediately execute a random access procedure on the target cell. If the SCG (including the SCG of which the target cell is the PScell) is indicated to be in the dorman/suspend/deactivation state in the PScell change command, the UE resets the SCG to the dorman/suspend/deactivation state after completing the random access procedure. If the SCG (including the SCG of which the target cell is the PScell) is indicated to be in an activated state in the PScell change command, the UE sets the SCG to be in the activated state after completing the random access procedure. Therefore, the state of the SCG after the UE completes the PSCell change is the same as the target state indicated in the PSCell change command.

In a seventh possible implementation manner, the above PSCell change command is accompanied by a command to activate SCG, for example, the command to activate SCG and the PSCell change command are in the same TB block and carried in MAC CE or DCI; the UE activates the SCG according to the command to activate the SCG and performs a PSCell change procedure, such as the UE applying a new configuration, completing downlink synchronization with the target cell and immediately performing a random access procedure on the target cell.

In an eighth possible implementation, the network side activates the current SCG of the UE before sending the PSCell change command to the UE. When the current SCG of the UE is in an active state, the network side sends a PSCell change command to the UE; i.e. the network side is not allowed to send a PSCell change command to the UE when the SCG of the UE is in the dorman/suspend/deactivation state.

Embodiment 3: the UE satisfies the configuration condition of the conditional handover (the condition that the UE changes the PSCell) and triggers the change of the condition PSCell (conditional PSCell change).

Step 3.1: the network side configures 2 nodes, 1 Main Node (MN) and 1 auxiliary node (SN) for the UE, wherein the SCG state of the SN side is dorman/suspend/deactivation state. The network side configures configuration condition information of a condition PSCell change (conditional PSCell change, CPC) for the UE, wherein the configured information comprises at least one candidate cell. Then step 3.2a and step 3.3a are performed, or step 3.2b is performed.

Step 3.2a: the UE performs CPC cell measurement evaluation, that is, evaluates whether the measurement result of the at least one candidate cell satisfies the execution condition of conditional PSCell change. Where a measurement result evaluation of one or more candidate cells (hereinafter referred to as target cells) satisfies the execution condition of conditional PSCell change.

Step 3.3a: the UE triggers conditional PSCell change on the SN side, conditional PSCell change procedure on the SN side, including several implementations:

in a first possible implementation, the UE applies the new configuration to complete downlink synchronization with the target cell, but the UE does not immediately perform a random access procedure on the target cell, but performs a random access procedure when the network side activates the SCG of the UE, thereby completing conditional PSCell change.

In a fourth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an activated state, and the UE applies the new configuration again, so as to complete downlink synchronization with the target cell and immediately execute a random access procedure on the target cell. After the UE completes the random access process, the SCG of the UE is reset to the dorman/suspend/deactivation state.

In a fifth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an active state, and the UE applies the new configuration again, completes downlink synchronization with the target cell, immediately performs a random access procedure on the target cell, and then maintains the SCG of the UE in an active state.

In a sixth possible implementation manner, the UE activates the current SCG of the UE first, so that the SCG is in an activated state, and the UE applies the new configuration again, so as to complete downlink synchronization with the target cell and immediately execute a random access procedure on the target cell. If the target SCG (including the SCG with the target cell being the PScell) is configured to be in the dorman/suspend/deactivation state in the conditional PSCell change configuration, the UE resets the SCG to the dorman/suspend/deactivation state after completing the random access procedure. If the target SCG is configured to be in an activated state in the conditional PSCell change configuration, the UE sets the SCG to be in the activated state after completing the random access procedure.

In a seventh possible implementation, the UE does not perform conditional PSCell change procedures, and conditional PSCell change procedures are performed after the current SCG of the UE is restored to active state. For example, after the network side activates the current SCG of the UE, the UE performs conditional PSCell change procedure again.

In an eighth possible implementation manner, the UE reports the cell identification information of the target cell that satisfies the execution condition of conditional PSCell change in the measurement result evaluation to the network side, and the network side makes a decision.

Step 3.2b: the UE does not perform the above-mentioned CPC cell measurement evaluation, but performs CPC cell measurement evaluation after the current SCG of the UE is restored to the active state, and evaluates whether the measurement result of the at least one candidate cell satisfies the PSCell change execution condition to determine whether to execute conditional PSCell change.

The above embodiments 2-3 illustrate the procedure in which the current SCG of the UE is in the dorman/suspend/deactivation state, and the PSCell change is performed.

The following description will be made with reference to the following embodiments 4 to 7, respectively, for the case where the target SCG (SCG including PSCell as target cell) is configured with a dorman/suspend/deactivate SCG, which indicates that the target state of the target SCG is a dorman/suspend/deactivate state.

Embodiment 4: the UE receives a PScell change command in a reconfiguration message sent by the network side.

Step 4.1: the network side configures 2 nodes, 1 Master Node (MN), 1 Slave Node (SN) for the UE.

Step 4.2: the network side (such as MN) sends a reconfiguration message to the UE, where the reconfiguration message carries a PSCell change command.

Step 4.3: the UE receives a PSCell change command sent by the network side, where PSCell after the UE performs PSCell change may be referred to as a target cell. The UE performing the PSCell change procedure includes the following implementations:

in a first possible implementation manner, the UE applies the new configuration, and if the PSCell change command indicates that the target SCG (including the SCG of which the target cell is PSCell) is in the dorman/suspend/deactivation state, the UE completes downlink synchronization with the target cell, but the UE does not immediately execute the random access procedure on the target cell, but executes the random access procedure when the network side activates the target SCG of the UE, thereby completing the PSCell change procedure.

In a second possible implementation, the UE applies the new configuration. If the PSCell change command indicates that the target SCG is in the dorman/suspend/deactivation state, the UE completes downlink synchronization with the target cell and immediately executes a random access process on the target cell, and then the SCG (the target SCG) of the UE is set to the dorman/suspend/deactivation state. If the target SCG is indicated to be in an activated state in the PSCell change command, the UE completes downlink synchronization with the target cell and immediately executes a random access procedure on the target cell, and activates the SCG of the UE.

In a third possible implementation manner, if the current SCG of the UE is in the dorman/suspend/deactivation state, the UE activates the current SCG first, and then applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell. If the PSCell change command indicates that the target SCG is in a dorman/suspend/deactivation state, the target SCG of the UE is set to be in a dorman/suspend/deactivation state after the UE completes the random access process. If the target SCG is indicated to be in an activated state in the PSCell change command, the target SCG of the UE is maintained in the activated state after the UE completes the random access procedure.

In a fourth possible implementation manner, if the target SCG is indicated in the PSCell change command to be in the dorman/suspend/deactivation state, the UE does not execute the PSCell change procedure according to the reconfiguration message, but executes the PSCell change according to the reconfiguration message when the SCG is activated by the network side (the SCG may be the target SCG or the current SCG).

Embodiment 5: the UE satisfies the configuration condition of the conditional handover (the condition that the UE changes the PSCell) and triggers the change of the condition PSCell (conditional PSCell change).

Step 5.1: the network side configures 2 nodes, 1 Master Node (MN) and 1 Slave Node (SN) for the UE; the network side configures CPC for the UE, wherein the configured information comprises at least one alternative cell.

Step 5.2: the UE performs a cell measurement evaluation of CPC in which measurement result evaluation of one or more alternative cells (hereinafter referred to as target cells) satisfies the execution condition of conditional PSCell change.

Step 5.3: the UE triggers conditional PSCell change on the SN side, conditional PSCell change procedure on the SN side, including several implementations:

in a first possible implementation, the UE applies the new configuration, and if the target SCG (including the SCG with the target cell being the PSCell) is configured in the conditional PSCell change configuration to be in the dorman/suspend/deactivation state, the UE completes downlink synchronization with the target cell, but the UE does not immediately perform a random access procedure on the target cell, but performs a random access procedure again when the network side activates the SCG of the UE, thereby completing the conditional PSCell change procedure.

In a second possible implementation, the UE applies the new configuration. If the target SCG is configured to be in a dormamnt/suspend/deactivation state in conditional PSCell change configuration, the UE completes downlink synchronization with the target cell and immediately executes a random access process on the target cell, and then the target SCG of the UE is set to be in a dormamnt/suspend/deactivation state. If the target SCG is configured to be in an active state in the conditional PSCell change configuration, the UE completes downlink synchronization with the target cell and immediately executes a random access process on the target cell, and then the target SCG of the UE is set to be in the active state.

In a third possible implementation manner, if the current SCG of the UE is in the dorman/suspend/deactivation state, the UE activates the SCG first, and then applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell. If the target SCG is configured to be in the dorman/suspend/deactivation state in the conditional PSCell change configuration, the target SCG of the UE is set to be in the dorman/suspend/deactivation state after the UE completes the random access process. If the target SCG is configured to be in an active state in the conditional PSCell change configuration, the UE sets the target SCG of the UE to be in the active state after the random access procedure is completed.

In a fourth possible implementation, if the target SCG state is configured in conditional PSCell change configuration to be dorman/suspend/deactivate state, the UE does not perform conditional PSCell change the procedure, but rather performs conditional PSCell change when the network side activates the SCG (which may be the target SCG, or the current SCG).

In a fifth possible implementation manner, the UE reports the cell identification information of the target cell that satisfies the execution condition of conditional PSCell change in the measurement result evaluation to the network side, and the network side makes a decision.

Embodiment 6: the UE receives a PSCell addition command (PSCell addition command) in a reconfiguration message sent by the network side.

Step 6.1: the network side configures 1 Master Node (MN) for the UE.

Step 6.2: the network side (such as MN) sends a reconfiguration message to the UE, wherein the reconfiguration message carries a PScell addition command.

Step 6.3: the UE receives a PSCell addition command sent by a network side, wherein the PSCell addition process carried out by the UE comprises the following realization modes:

in a first possible implementation manner, the UE applies the new configuration, and if the PSCell addition command indicates that the added SCG (including the SCG with the target cell being the PSCell) is in the dorman/suspend/deactivate state, the UE completes downlink synchronization with the target cell, but does not immediately perform the random access procedure on the target cell, but performs the random access procedure when the network side activates the newly added SCG.

In a second possible implementation, the UE applies the new configuration. If the PSCell addition command indicates that the added SCG is in a dormamnt/suspend/deactivation state, the UE completes downlink synchronization with the target cell and immediately executes a random access process on the target cell, and then the newly added SCG of the UE is set in the dormamnt/suspend/deactivation state. If the added SCG is indicated to be in an activated state in the PSCell addition command, the UE completes downlink synchronization with the target cell and immediately executes a random access process on the target cell, and then the newly added SCG of the UE is set to be in the activated state.

In a third possible implementation, the UE activates the added SCG, applies the new configuration again, completes downlink synchronization with the target cell and immediately performs a random access procedure on the target cell. If the added SCG is indicated to be in the dorman state in the PSCell addition command, the SCG of the UE is set to be in the dorman state after the UE completes the random access process. If the added SCG is indicated to be in an activated state in the PSCell addition command, the UE maintains the SCG of the UE in the activated state after completing the random access process.

In a fourth possible implementation manner, if the added SCG state indicated in the PSCell addition command is a dorman/suspend/deactivate state, the UE does not execute the PSCell addition procedure according to the reconfiguration message, but executes PSCell addition according to the reconfiguration message when the SCG is activated by the network side (the SCG is the SCG to be added).

Embodiment 7: the UE triggers the addition of the PSCell (conditional PSCell addition) when the UE satisfies the configuration condition of the addition of the PSCell (condition of the addition of the PSCell)

Step 7.1: the network side configures 1 Master Node (MN) for the UE; the network side configures configuration conditions of a condition PSCell addition (conditional PSCell addition) for the UE, wherein the configured information comprises at least one alternative cell.

Step 7.2: the UE performs conditional PSCell addition cell measurement evaluations, wherein measurement evaluations of one or more candidate cells (hereinafter referred to as target cells) exist that satisfy conditional PSCell addition execution conditions.

Step 7.3: the UE trigger conditional PSCell addition, conditional PSCell addition procedure includes the following implementations:

in a first possible implementation, the UE applies the new configuration, and if the added SCG (including the SCG with the target cell being the PSCell) is configured in the conditional PSCell addition configuration to be in the dorman/suspend/deactivation state, the UE completes downlink synchronization with the target cell, but the UE does not immediately perform the random access procedure on the target cell, but performs the random access procedure again when the network side activates the newly added SCG of the UE, thereby completing the conditional PSCell change procedure.

In a second possible implementation, the UE applies the new configuration. If the added SCG is configured to be in a dormamnt/suspend/deactivation state in conditional PSCell addition configuration, the UE completes downlink synchronization with the target cell and immediately executes a random access process, and then the added SCG of the UE is set to be in a dormamnt/suspend/deactivation state. If the added SCG is configured to be in an active state in conditional PSCell addition configuration, the UE completes downlink synchronization with the target cell and immediately executes a random access process, and then the newly added SCG of the UE is set to be in the active state.

In a third possible implementation, the UE activates the added SCG, and the UE reapplies the new configuration, completes downlink synchronization with the target cell and immediately performs a random access procedure on the target cell. If the added SCG is configured to be in the dorman state in the conditional PSCell addition configuration, the UE sets the SCG of the UE to the dorman state after the random access process is completed. If the added SCG is configured to be in an activated state in the conditional PSCell addition configuration, the UE maintains the SCG of the UE in the activated state after completing the random access procedure.

In a fourth possible implementation, if the added SCG state is configured in the conditional PSCell addition configuration as dorman/suspend/deactivation state, the conditional PSCell addition procedure is not performed, but rather conditional PSCell addition is performed when the network side activates the SCG to be added.

In a fifth possible implementation manner, the UE reports the cell identification information of the target cell that satisfies the execution condition of conditional PSCell addition in the measurement result evaluation to the network side, and the network side makes a decision.

As can be seen from the above embodiments, for a multi-connection scenario, when the current SCG of the UE is in a dorman/suspend/deactivation state, and the UE needs to perform PSCell change or PSCell addition, the UE may access a target cell (change or add to PSCell), then place the SCG in the dorman/suspend/deactivation state, or wait for the network side to activate the SCG of the UE and then trigger to access the target cell. Or, the target SCG of the UE (including the SCG of which the target cell is the PScell) is configured into a dorman/suspend/deactivation state, and when the UE needs to perform PScell change or PScell addition or conditional PSCell addition/change, the UE can access the target cell, then the SCG is set into the dorman/suspend/deactivation state or the access target cell is triggered after the network activates the SCG.

On the terminal side, the embodiment of the present application provides a primary cell update apparatus of a secondary cell group, as shown in fig. 8, where the primary cell update apparatus 800 of the secondary cell group of the present embodiment may be a terminal device, and the primary cell update apparatus 800 of the secondary cell group may include a transceiver 801, a processor 802, and a memory 803.

A transceiver 801 for receiving and transmitting data under the control of a processor 802.

Where in FIG. 8, a bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented in particular by processor 802, and various circuits of memory, represented by memory 803, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 801 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. Optionally, the primary cell update apparatus 800 of the secondary cell group may further include a user interface 804, and for different user devices, the user interface 804 may also be an interface capable of connecting to an internal connection requiring device, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 802 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 802 in performing operations.

Alternatively, the processor 802 may be a central processing unit (central processing unit, CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA), or a complex programmable logic device (Complex Programmable Logic Device, CPLD), and the processor may also employ a multi-core architecture.

The processor 802 is configured to execute any of the methods provided in the embodiments of the present application with respect to the terminal device by calling a computer program stored in the memory 803 according to the obtained executable instructions. The processor and the memory may also be physically separate.

Specifically, the processor 802 is configured to perform the following operations:

updating the target cell to the PScell of the terminal equipment.

downlink synchronization with a target cell;

and accessing the target cell.

Optionally, accessing the target cell includes:

triggering a random access process to access a target cell;

the processor 802 also performs the following operations: after the access to the target cell is completed, the auxiliary cell group of the terminal equipment is set to be in a suspended state, or the auxiliary cell group of the terminal equipment is set to be in an active state, or the auxiliary cell group of the terminal equipment is set to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

Optionally, the processor 802 also performs the following operations:

Optionally, accessing the target cell includes:

Optionally, the processor 802 also performs the following operations:

Optionally, the current secondary cell group of the terminal device is in a suspended state, and the processor 802 further performs the following operations:

It should be noted that, the above device provided in the present application can implement all the method steps implemented by the terminal device in the method embodiment, and can achieve the same technical effects, and the same parts and beneficial effects as those of the method embodiment in the present embodiment are not described in detail herein.

On the network side, the embodiment of the present application provides a primary cell updating apparatus of a secondary cell group, as shown in fig. 9, a primary cell updating apparatus 900 of a secondary cell group in this embodiment may be a network device, where the primary cell updating apparatus 900 of the secondary cell group includes: a transceiver 901, a processor 902, and a memory 903.

A transceiver 901 for receiving and transmitting data under the control of the processor 902.

Where in FIG. 9, a bus architecture may comprise any number of interconnected buses and bridges, with one or more processors, represented in particular by processor 902, and various circuits of memory, represented by memory 903, being linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 901 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 902 in performing operations.

The processor 902 may be CPU, ASIC, FPGA or a CPLD, and the processor may also employ a multi-core architecture.

The processor 902 is configured to execute any of the methods provided in the embodiments of the present application with respect to the network device by calling a computer program stored in the memory 903, according to the obtained executable instructions. The processor and the memory may also be physically separate.

Specifically, the processor 902 is configured to perform the following operations:

and sending the second information to the terminal equipment.

Optionally, the processor 902 further performs the following operations:

It should be noted that, the above device provided in the present application can implement all the method steps implemented by the network device in the above method embodiment, and can achieve the same technical effects, and the same parts and beneficial effects as those of the method embodiment in the present embodiment are not described in detail herein.

On the terminal side, the embodiment of the present application further provides a primary cell update apparatus of a secondary cell group, as shown in fig. 10, where the primary cell update apparatus 1000 of the secondary cell group of the present embodiment may be a terminal device, and the primary cell update apparatus 1000 of the secondary cell group includes: a determination unit 1001 and a processing unit 1002.

A determining unit 1001, configured to determine that a target cell needs to be updated to a PSCell of a terminal device, where a current secondary cell group of the terminal device is in a suspended state, and/or a target state of a target secondary cell group is in a suspended state, and the PSCell of the target secondary cell group is a target cell;

a processing unit 1002, configured to update the target cell to a PSCell of the terminal device.

Optionally, the processing unit 1002 is specifically configured to:

downlink synchronization with a target cell;

and accessing the target cell.

Optionally, accessing the target cell includes: triggering a random access process to access the target cell.

The processing unit 1002 is further configured to: after the access to the target cell is completed, the auxiliary cell group of the terminal equipment is set to be in a suspended state, or the auxiliary cell group of the terminal equipment is set to be in an active state, or the auxiliary cell group of the terminal equipment is set to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

Optionally, the processing unit 1002 is further configured to activate the secondary cell group of the terminal device before updating the target cell to be the PSCell of the terminal device; or alternatively, the process may be performed,

the processing unit 1002 is further configured to activate a secondary cell group of the terminal device before accessing the target cell.

Optionally, accessing the target cell includes: after downlink synchronization with the target cell, receiving second information from the network device, where the second information is used to indicate a secondary cell group of the active terminal device; and activating the secondary cell group of the terminal equipment according to the second information, and triggering a random access process to access the target cell.

Optionally, the primary cell update apparatus 1000 of the secondary cell group of the present embodiment further includes a receiving unit 1003.

A receiving unit 1003 configured to receive second information from the network device before the processing unit 1002 determines that the target cell needs to be updated to the PSCell of the terminal device; or before the processing unit 1002 updates the target cell to the PSCell of the terminal device, while receiving the third information from the network device, simultaneously receiving the second information from the network device;

The processing unit 1002 is further configured to activate, according to the second information, a secondary cell group of the terminal device.

Optionally, the determining unit 1001 is specifically configured to:

A receiving unit 1003 configured to receive fifth information from a network device, where the fifth information is configured to indicate configuration information of a target cell group to which the target cell belongs;

The processing unit 1002 is further configured to apply, if the fifth information does not include the third information, the configuration of the target cell group to which the target cell belongs to the terminal device according to the configuration information of the target cell group to which the target cell belongs.

The current secondary cell group of the terminal device is in a suspended state, and the receiving unit 1003 is further configured to receive second information from the network device, where the second information is used to indicate to activate the secondary cell group of the terminal device, before the determining unit 1001 determines that the target cell needs to be updated to be a PSCell of the terminal device; wherein the processing unit 1002 stops evaluating whether the measurement result of the target cell satisfies the condition for the terminal device to update the PSCell, before the receiving unit 1003 receives the second information;

the processing unit 1002 is further configured to activate, after the receiving unit 1003 receives the second information from the network device, a secondary cell group of the terminal device according to the second information, and evaluate whether a measurement result of the target cell meets a condition that the terminal device updates the PSCell;

the determining unit 1001 is specifically configured to: if the processing unit 1002 evaluates that the measurement result of the target cell meets the condition of updating the PSCell by the terminal device, it determines that the target cell needs to be updated to the PSCell of the terminal device.

On the network side, the embodiment of the present application further provides a primary cell update apparatus of a secondary cell group, as shown in fig. 11, a primary cell update apparatus 1100 of a secondary cell group in this embodiment may be a network device, where the primary cell update apparatus 1100 of a secondary cell group includes: a processing unit 1101 and a transmitting unit 1102.

The processing unit 1101 is configured to generate second information, where the second information is used to indicate that the secondary cell group of the terminal device is activated, and the current secondary cell group of the terminal device is in a suspended state, and/or the target state of the target secondary cell group is in a suspended state, and the PSCell of the target secondary cell group is the target cell.

A sending unit 1102, configured to send the second information to the terminal device.

Optionally, the sending unit 1102 is further configured to send first information to the terminal device, where the first information is used to instruct the terminal device to update the target cell to the PSCell of the terminal, and the secondary cell group of the terminal device is the target state.

Optionally, the processing unit 1101 is further configured to determine that the terminal device needs to update the target cell to be the PSCell of the terminal device before generating the second information.

Optionally, the sending unit 1102 is further configured to: simultaneously transmitting third information to the terminal device while transmitting the second information to the terminal device; or, after the second information is sent to the terminal device, the third information is sent to the terminal device.

Optionally, the primary cell update apparatus 1100 of the secondary cell group of the present embodiment further includes a receiving unit 1103.

A receiving unit 1103, configured to receive, before the processing unit 1101 determines that the terminal device needs to update the target cell to be the PSCell of the terminal device, cell identification information of the target cell reported by the terminal device;

determining that the terminal device needs to update the target cell to the PSCell of the terminal device includes: and determining the PScell for updating the target cell to the terminal equipment according to the cell identification information of the target cell.

Optionally, the sending unit 1102 is further configured to send fourth information to the terminal device, where the fourth information is used to instruct the terminal device to update a condition of the PSCell.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution, in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

At the terminal side, the embodiment of the application provides a processor readable storage medium, and the processor readable storage medium stores a computer program, where the computer program is configured to enable a processor to execute any one of the methods related to the terminal device provided in the embodiment of the application. The processor can realize all the method steps realized by the terminal device in the method embodiment and can achieve the same technical effects, and the parts and the beneficial effects same as those in the method embodiment in the embodiment are not described in detail herein.

On the network side, the embodiment of the application provides a processor readable storage medium, and the processor readable storage medium stores a computer program, where the computer program is configured to enable a processor to execute any one of the methods related to the network device provided in the embodiment of the application. The processor can realize all the method steps realized by the network device in the method embodiment and can achieve the same technical effects, and the parts and the beneficial effects same as those in the method embodiment in the embodiment are not described in detail herein.

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for primary cell update of a secondary cell group, the method comprising:

the method comprises the steps that a terminal device determines a primary cell PScell of a secondary cell group of the terminal device, wherein the primary cell PScell of the secondary cell group of the terminal device needs to be updated, the current secondary cell group of the terminal device is in a suspension state, and/or the target state of the target secondary cell group is in a suspension state, and the PScell of the target secondary cell group is the target cell;

the terminal equipment updates the target cell into a PScell of the terminal equipment;

the terminal device updates the target cell to a PSCell of the terminal device, including:

the terminal equipment is in downlink synchronization with the target cell;

the terminal equipment accesses the target cell;

the terminal device determines that a target cell needs to be updated to a PSCell of the terminal device, including:

the terminal equipment receives third information from network equipment and determines that a target cell needs to be updated to a PScell of the terminal equipment according to the third information, wherein the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment; or alternatively, the process may be performed,

The terminal device receives fourth information from the network device, where the fourth information is used to indicate a condition that the terminal device updates the PSCell, and if the terminal device evaluates that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the terminal equipment accesses the target cell, comprising:

the terminal equipment triggers a random access process to access the target cell;

the method further comprises the steps of: after the terminal equipment completes the access to the target cell, setting the auxiliary cell group of the terminal equipment to be in a suspended state, or setting the auxiliary cell group of the terminal equipment to be in an active state, or setting the auxiliary cell group of the terminal equipment to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

3. The method according to claim 1 or 2, characterized in that before the terminal device updates the target cell to the PSCell of the terminal device, further comprising: the terminal equipment activates a secondary cell group of the terminal equipment; or alternatively, the process may be performed,

Before the terminal equipment accesses the target cell, the method further comprises: the terminal device activates the secondary cell group of the terminal device.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the terminal equipment accesses the target cell, comprising:

after downlink synchronization with the target cell, the terminal equipment receives second information from network equipment, wherein the second information is used for indicating to activate a secondary cell group of the terminal equipment;

and the terminal equipment activates the auxiliary cell group of the terminal equipment according to the second information and triggers a random access process to access the target cell.

5. The method according to claim 1 or 2, characterized in that before the terminal device updates the target cell to the PSCell of the terminal device, further comprising:

before the terminal equipment determines that a target cell needs to be updated to a PScell of the terminal equipment, the terminal equipment receives second information from network equipment; or when the terminal equipment receives the third information from the network equipment, the terminal equipment simultaneously receives the second information from the network equipment;

the second information is used for indicating to activate a secondary cell group of the terminal equipment, and the third information is used for indicating the terminal equipment to update the target cell to a PScell of the terminal equipment;

6. The method according to claim 1 or 2, wherein when the terminal device receives fourth information from the network device for indicating a condition for the terminal device to update the PSCell, the determining that the target cell needs to be updated to the PSCell of the terminal device comprises:

7. The method according to claim 1 or 2, further comprising:

and if the fifth information does not include the third information, the terminal equipment applies the configuration of the target cell group to which the target cell belongs according to the configuration information of the target cell group to which the target cell belongs.

8. The method according to claim 1 or 2, wherein the current secondary cell group of the terminal device is in a suspended state, and before the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device, further comprising:

The terminal equipment receives second information from the network equipment, wherein the second information is used for indicating to activate the auxiliary cell group of the terminal equipment; wherein, before receiving the second information, the terminal device stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PScell;

after receiving the second information from the network equipment, the terminal equipment activates a secondary cell group of the terminal equipment according to the second information, and evaluates whether a measurement result of the target cell meets the condition that the terminal equipment updates the PScell;

the terminal device determines that a target cell needs to be updated to a PSCell of the terminal device, including: if the measurement result of the target cell is evaluated to meet the condition that the terminal equipment updates the PSCell, the terminal equipment determines that the target cell needs to be updated to the PSCell of the terminal equipment.

9. A method for primary cell update of a secondary cell group, the method comprising:

the network equipment generates second information, wherein the second information is used for indicating a secondary cell group of the active terminal equipment, the current secondary cell group of the terminal equipment is in a suspension state, and/or the target state of a target secondary cell group is in a suspension state, and a PScell of the target secondary cell group is a target cell;

The network equipment sends the second information to the terminal equipment;

before the network device generates the second information, the method further includes:

the network equipment determines that the terminal equipment needs to update the target cell to a PScell of the terminal equipment;

the network equipment simultaneously sends third information to the terminal equipment when sending the second information to the terminal equipment; or the network equipment sends third information to the terminal equipment after sending the second information to the terminal equipment; the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment.

10. The method as recited in claim 9, further comprising:

the network device sends first information to the terminal device, where the first information is used to instruct the terminal device to update the target cell to the PSCell of the terminal, and the secondary cell group of the terminal device is in a target state.

11. The method of claim 9, wherein the network device further comprises, before determining that the terminal device needs to update the target cell to the PSCell of the terminal device:

the network device determining that the terminal device needs to update a target cell to a PSCell of the terminal device includes:

and the network equipment determines to update the target cell to the PScell of the terminal equipment according to the cell identification information of the target cell.

12. The method of claim 9, wherein before the network device sends the second information to the terminal device, further comprising:

the network device sends fourth information to the terminal device, where the fourth information is used to instruct the terminal device to update a PSCell condition.

13. A primary cell update apparatus for a secondary cell group, comprising a memory, a transceiver, and a processor:

the memory is used for storing a computer program;

the transceiver is used for receiving and transmitting data under the control of the processor;

the processor is configured to read the computer program in the memory and perform the following operations:

determining a primary cell PScell of a secondary cell group of a terminal device, wherein the primary cell PScell is required to update a target cell as the secondary cell group of the terminal device, the current secondary cell group of the terminal device is in a suspension state, and/or the target state of the target secondary cell group is in a suspension state, and the PScell of the target secondary cell group is the target cell;

Updating the target cell to a PScell of the terminal equipment;

applying the configuration of the target auxiliary cell group to which the target cell belongs;

downlink synchronization with the target cell;

accessing the target cell;

the determining that the target cell needs to be updated to the PSCell of the terminal device includes:

receiving third information from network equipment, and determining that a target cell needs to be updated to a PScell of the terminal equipment according to the third information, wherein the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment; or alternatively, the process may be performed,

and receiving fourth information from network equipment, wherein the fourth information is used for indicating the condition of updating the PSCell by the terminal equipment, and if the measurement result of the target cell is evaluated to meet the condition of updating the PSCell by the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

the accessing the target cell includes:

triggering a random access process to access the target cell;

The processor also performs the following operations: after the target cell is accessed, the auxiliary cell group of the terminal equipment is set to be in a suspended state, or the auxiliary cell group of the terminal equipment is set to be in an active state, or the auxiliary cell group of the terminal equipment is set to be in a target state according to first information, wherein the first information is used for indicating the auxiliary cell group of the terminal equipment to be in the target state.

15. The apparatus of claim 13 or 14, wherein the processor further performs the following:

before updating the target cell into the PScell of the terminal equipment, activating a secondary cell group of the terminal equipment; or alternatively, the process may be performed,

and before the target cell is accessed, activating the auxiliary cell group of the terminal equipment.

16. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

the accessing the target cell includes:

after downlink synchronization with the target cell, receiving second information from network equipment, wherein the second information is used for indicating to activate a secondary cell group of the terminal equipment;

and activating the auxiliary cell group of the terminal equipment according to the second information, and triggering a random access process to access the target cell.

17. The apparatus of claim 13 or 14, wherein the processor further performs the following:

before determining that the target cell needs to be updated to the PScell of the terminal equipment, receiving second information from the network equipment; or before updating the target cell to the PSCell of the terminal device, receiving the third information from the network device while simultaneously receiving the second information from the network device;

18. The apparatus according to claim 13 or 14, wherein when the terminal device receives fourth information from the network device for indicating a condition for the terminal device to update the PSCell, the terminal device needs to update the target cell to the PSCell of the terminal device, comprising:

19. The apparatus of claim 13 or 14, wherein the processor further performs the following:

Receiving fifth information from the network equipment, wherein the fifth information is used for indicating configuration information of a target cell group to which the target cell belongs;

20. The apparatus of claim 13 or 14, wherein the current secondary cell group of the terminal device is in a suspended state, and wherein the processor further performs the following operations:

before determining that the target cell needs to be updated to the PScell of the terminal equipment, receiving second information from network equipment, wherein the second information is used for indicating to activate a secondary cell group of the terminal equipment; wherein before receiving the second information, stopping evaluating whether the measurement result of the target cell meets a condition that the terminal device updates a PSCell;

the determining that the target cell needs to be updated to the PSCell of the terminal device includes: and if the measurement result of the target cell is evaluated to meet the condition of updating the PSCell by the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

21. A primary cell update apparatus for a secondary cell group, comprising a memory, a transceiver, and a processor:

the memory is used for storing a computer program;

generating second information, wherein the second information is used for indicating an auxiliary cell group of an activated terminal device, the current auxiliary cell group of the terminal device is in a suspension state, and/or the target state of a target auxiliary cell group is in a suspension state, and a PScell of the target auxiliary cell group is a target cell;

transmitting the second information to the terminal equipment;

before generating the second information, determining that the terminal equipment needs to update the target cell to a PScell of the terminal equipment;

the processor also performs the following operations:

simultaneously transmitting third information to the terminal equipment while transmitting the second information to the terminal equipment; or alternatively, the process may be performed,

the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment.

22. The apparatus of claim 21, wherein the processor further performs the following:

and sending first information to the terminal equipment, wherein the first information is used for indicating that the secondary cell group of the terminal equipment is in a target state after the terminal equipment updates the target cell into the PScell of the terminal.

23. The apparatus of claim 21, wherein the processor further performs the following:

before determining that a terminal device needs to update a target cell into a PScell of the terminal device, receiving cell identification information of the target cell reported by the terminal device;

the determining that the terminal device needs to update the target cell to the PSCell of the terminal device includes:

and determining to update the target cell to the PScell of the terminal equipment according to the cell identification information of the target cell.

24. The apparatus of claim 21, wherein the processor further performs the following:

and before sending the second information to the terminal equipment, sending fourth information to the terminal equipment, wherein the fourth information is used for indicating the condition of updating the PSCell by the terminal equipment.

25. A primary cell update apparatus for a secondary cell group, comprising:

a determining unit, configured to determine a primary cell PSCell of a secondary cell group of a terminal device, where the primary cell PSCell needs to update a target cell as the secondary cell group of the terminal device, and/or the target state of the target secondary cell group is a suspension state, and the PSCell of the target secondary cell group is the target cell;

a processing unit, configured to update the target cell to a PSCell of the terminal device; applying the configuration of the target auxiliary cell group to which the target cell belongs; downlink synchronization with the target cell; accessing the target cell;

the determining unit is specifically configured to: receiving third information from network equipment, and determining that a target cell needs to be updated to a PScell of the terminal equipment according to the third information, wherein the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment; or alternatively, the process may be performed,

and receiving fourth information from network equipment, wherein the fourth information is used for indicating the condition of updating the PSCell by the terminal equipment, and if the terminal equipment evaluates that the measurement result of the target cell meets the condition of updating the PSCell by the terminal equipment, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

26. A primary cell update apparatus for a secondary cell group, comprising:

the processing unit is used for generating second information, wherein the second information is used for indicating a secondary cell group of the active terminal equipment, the current secondary cell group of the terminal equipment is in a suspension state, and/or the target state of a target secondary cell group is in a suspension state, and the PScell of the target secondary cell group is a target cell;

a transmitting unit, configured to transmit the second information to the terminal device;

the processing unit is further configured to determine, before generating the second information, that the terminal device needs to update the target cell to a PSCell of the terminal device;

the sending unit is further configured to: simultaneously transmitting third information to the terminal equipment while transmitting second information to the terminal equipment; or after sending the second information to the terminal equipment, sending third information to the terminal equipment; the third information is used for indicating the terminal equipment to update the target cell to the PScell of the terminal equipment.

27. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 8 or any one of claims 9-12.