CN114071612A

CN114071612A - Method, device and storage medium for updating master cell of secondary cell group

Info

Publication number: CN114071612A
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: 2022-02-18
Anticipated expiration: 2040-08-07
Also published as: WO2022028297A1; CN114071612B

Abstract

The application provides a method, a device and a storage medium for updating a main 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 to the PSCell of the terminal equipment, wherein the current auxiliary cell group of the terminal equipment is in a suspended state, and/or the target state of the target auxiliary cell group is in the suspended state, and the PSCell of the target auxiliary cell group is the target cell; and the terminal equipment updates the target cell into the PSCell of the terminal equipment. The method provides a solution for how the terminal device updates the PSCell of the terminal device under the condition that the SCG is in the suspension state.

Description

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

Technical Field

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

Background

In a multi-connection scenario, a terminal device and a plurality of network devices on a network side maintain a connection state, and in a dual-connection scenario, the terminal device and two network devices on the network side maintain connection states, which are a Master Node (MN) and a Secondary Node (SN), respectively. The MN configures a Master Cell Group (MCG) for the terminal equipment, wherein the MCG comprises a Master Cell (PCell) and zero to a plurality of auxiliary cells; the SN configures a Secondary Cell Group (SCG) for the terminal device, and the SCG also includes a primary Cell (PSCell) and zero to multiple Secondary cells. The MN and the SN may perform data interaction with the terminal device at the same time, and the terminal device may also perform Radio Resource Management (RRM) measurement on the MCG and the SCG and report the RRM measurement to the network side. And if the network side determines to change or add the PCell/PSCell according to the RRM measurement of the terminal equipment, sending a corresponding command to the terminal equipment, and executing corresponding processing by the terminal equipment. Or, if the terminal device determines, according to the RRM measurement, that a preconfigured condition for changing or adding the PCell/PSCell is satisfied, the terminal device performs a corresponding process for changing or adding the PCell/PSCell.

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

Disclosure of Invention

The application provides a method, a device and a storage medium for updating a master cell of an auxiliary cell group, which are used for providing a solution for updating a PSCell by a terminal device under the condition that an SCG is in a dormant/suspend/deactivation state.

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

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

and the terminal equipment updates the target cell into the PSCell of the terminal equipment.

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

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

the terminal equipment and the target cell are in downlink synchronization;

the terminal equipment accesses the target cell.

Optionally, the accessing, by the terminal device, the target cell includes:

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

the method further comprises the following steps: after the terminal device finishes accessing the target cell, setting the auxiliary cell group of the terminal device to be in a suspended state, or setting the auxiliary cell group of the terminal device to be in an activated state, or setting the auxiliary cell group of the terminal device 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 device 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 an auxiliary cell group of the terminal equipment; alternatively, the first and second electrodes may be,

before the terminal device accesses the target cell, the method further includes: and the terminal equipment activates the auxiliary cell group of the terminal equipment.

Optionally, the accessing, by the terminal device, the target cell includes:

after the terminal equipment is in downlink synchronization with the target cell, receiving second information from the network equipment, wherein the second information is used for indicating to activate an auxiliary 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.

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

before the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device, the terminal device receives second information from the network device; 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 the auxiliary cell group of the terminal equipment, and the third information is used for indicating the terminal equipment to update the target cell to the 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 determining, by the terminal device, that the target cell needs to be updated to the PSCell of the terminal device includes:

the terminal equipment receives third information from the network equipment, determines a PSCell which needs to update the target cell to 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 the PSCell of the terminal equipment; alternatively, the first and second electrodes may be,

and 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 target cell evaluated by the terminal equipment meets the condition of updating the PSCell by the terminal equipment, the target cell is determined to be updated to the PSCell of the terminal equipment.

Optionally, the receiving, by the terminal device, fourth information from the network device, the fourth information being used to indicate a condition for the terminal device to update the PSCell, and accordingly the determining, by the terminal device, that the target cell needs to be updated to the PSCell of the terminal device, includes:

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

Optionally, the method further includes:

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 a target cell belongs;

and if the fifth information does not comprise 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.

Optionally, the method for updating the target cell to the PSCell of the terminal device by the terminal device further includes:

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; before the terminal equipment receives the second information, stopping evaluating whether the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell;

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

the method for determining the PSCell needing to update the target cell to the terminal device by the terminal device includes: and if the measurement result of the target cell meets 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.

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

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

and the network equipment sends the second information to the terminal equipment.

Optionally, the method further includes:

the network equipment sends first information to the terminal equipment, wherein the first information is used for indicating that the terminal equipment updates a target cell to be a PSCell of the terminal and then the auxiliary cell of the terminal equipment is in a target state.

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 includes:

when the network equipment sends the second information to the terminal equipment, the network equipment sends third information to the terminal equipment at the same time; alternatively, the first and second electrodes may be,

after the network equipment sends the second information to the terminal equipment, the network equipment sends third information to the terminal equipment;

and the third information is used for indicating the terminal equipment to update the target cell to be 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 cell identification information of a target cell reported by the terminal equipment;

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

and the network equipment determines to update the target cell into the PSCell of 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:

and the network equipment sends fourth information to the terminal equipment, wherein the fourth information is used for indicating the condition that the terminal equipment updates the PSCell.

In a third aspect, the present application provides a primary cell update apparatus for 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 a PSCell which needs to update a target cell to a terminal device, wherein the current auxiliary cell group of the terminal device is in a suspended state, and/or the target state of the target auxiliary cell group is in the suspended state, and the PSCell of the target auxiliary cell group is the target cell;

and updating the target cell to be the PSCell of the terminal equipment.

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

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

synchronizing with the downlink of the 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 of the target cell is finished, 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 activated 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, the processor further performs the following operations:

before the target cell is updated to the PSCell of the terminal equipment, activating an auxiliary cell group of the terminal equipment; alternatively, the first and second electrodes may be,

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

Optionally, accessing the target cell includes:

after downlink synchronization with a target cell, receiving second information from the network equipment, wherein the second information is used for indicating to activate an auxiliary 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.

Optionally, the processor further performs the following operations:

before determining that the target cell needs to be updated to the PSCell of the terminal device, receiving second information from the network device; or before the target cell is updated to the PSCell of the terminal equipment, when the third information from the network equipment is received, the second information from the network equipment is received at the same time;

and activating the auxiliary 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 a PSCell which needs to update the target cell to 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; alternatively, the first and second electrodes may be,

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

Optionally, the step of receiving, by the terminal device, fourth information from the network device, the fourth information being used to indicate a condition that the terminal device updates the PSCell, and accordingly determining that the target cell needs to be updated to the PSCell of the terminal device includes:

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 equipment, wherein the fifth information is used for indicating configuration information of a target cell group to which a 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 to activate the auxiliary cell group of the terminal equipment; before the second information is received, stopping evaluating whether the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell;

after receiving second information from the network equipment, activating an auxiliary cell group of the terminal equipment according to the second information, and evaluating whether a measurement result of a target cell meets the condition that the terminal equipment updates the PSCell;

determining a PSCell which needs to update a target cell to a terminal device, including: and if the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell, 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 for 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 to activate an auxiliary cell group of the terminal equipment, the current auxiliary cell group of the terminal equipment is in a suspended state, and/or the target state of a target auxiliary cell group is in the suspended state, and a 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 that the terminal equipment updates the target cell to be the PSCell of the terminal and then the auxiliary cell of the terminal equipment is in a target state.

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:

when the second information is sent to the terminal equipment, the third information is sent to the terminal equipment at the same time; alternatively, the first and second electrodes may be,

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 to 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 to update the target cell to the PSCell of the terminal equipment according to the cell identification information of the target cell.

Optionally, the processor further performs the following operations:

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 that the terminal equipment updates the PSCell.

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

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

synchronizing with the downlink of the 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 of the target cell is finished, 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 activated 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, the processing unit is further configured to activate the secondary cell group of the terminal device before the target cell is updated to the PSCell of the terminal device; alternatively, the first and second electrodes may be,

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, while receiving the third information from the network device, receiving the second information from the network device;

and the processing unit is further 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 step of receiving, by the terminal device, fourth information from the network device, the fourth information being used to indicate a condition that the terminal device updates the PSCell, and accordingly determining that the target cell needs to be updated to the PSCell of the terminal device includes: 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 the network device, where the fifth information is used 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 by the terminal equipment according to the configuration information of the target cell group to which the target cell belongs if the fifth information does not include the third information.

Optionally, the apparatus further comprises a receiving unit;

the receiving unit is further configured to receive second information from the network device before the determining unit determines that the target cell needs to be updated to the PSCell of the terminal device, where the second information is used to indicate that the auxiliary cell group of the terminal device is activated; before the receiving unit receives the second information, the processing unit stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell;

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

a determination unit, specifically configured to: and if the processing unit evaluates that the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell, 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 for a secondary cell group, including:

the processing unit is used for generating second information, and the second information is used for indicating the activation of the auxiliary cell group of the terminal equipment, wherein the current auxiliary cell group of the terminal equipment is in a suspended state, and/or the target state of the target auxiliary cell group is in the suspended state, and the PSCell of the target auxiliary cell group is the 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 indicate that the terminal device updates the target cell to the PSCell of the terminal device, and then the secondary cell of the terminal device is in the target state.

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

Optionally, the sending unit is further configured to:

Optionally, the apparatus further comprises a receiving unit;

a receiving unit, configured to receive cell identification information of a target cell reported by a terminal device before a processing unit determines that the terminal device needs to update the target cell to a PSCell of 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 indicate a condition for the terminal device to update 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 master cell update system for a secondary cell group, including the network device as described in any one of the above and the terminal device as described in any one of the above.

If the current SCG of the terminal equipment is in a suspended state and/or the target state of the target SCG is in the suspended state, the PSCell of the target auxiliary 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 suspended state.

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

Drawings

In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

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 for a secondary cell group according to an embodiment of the present application;

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

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

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

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

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

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

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

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

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

Detailed Description

The term "and/or" in this application, describing the association relationship of the associated objects, means that there may be three relationships, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a method, a device and a storage medium for updating a master cell of an auxiliary cell group, aiming at a multi-connection scene, a current SCG of a terminal device is in a suspended state or a target state of a target auxiliary cell group is in a suspended state, a PSCell of the target auxiliary cell group is a target cell, when the terminal device determines that the target cell is to be updated to the PSCell of the terminal device, the terminal device can update the target cell to the PSCell of the terminal device, so that when the SCG is in the suspended state, the terminal device can also execute the update of the target cell to the PSCell of the terminal device, and the problems in the prior art are solved.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, particularly 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with 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 embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a 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 (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-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 root antenna combinations.

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

In the following, how to update the PSCell of the terminal device when the SCG of the terminal device is the dormant SCG, the suspend SCG, or the deactivation SCG will be described by using the embodiments.

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

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

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

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

In a possible implementation manner, 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 be 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 information used to indicate that the target state of the target SCG is a suspended state, and the PSCell of 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 satisfy a condition for updating the PSCell of the terminal device, determines that the terminal device needs to update the PSCell if the measurement results of each candidate cell satisfy the condition, and determines that the candidate cell satisfying 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 satisfies the condition for updating the PSCell by the terminal device, the terminal device further receives fourth information sent by the network device, where the fourth information is used to indicate the condition for updating the PSCell by the terminal device. This fourth information may be referred to as conditional configuration information, for example. The condition for updating the PSCell by the terminal device includes: 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 the candidate cells satisfy a condition for updating the PSCell by the terminal device, and if the target cell satisfies the condition for updating the PSCell by the terminal device, the terminal device sends identification information of the target cell to the network device. Correspondingly, the network device receives the identification information of the target cell, and learns that the measurement result of the target cell meets the condition that the terminal device updates the PSCell, thereby determining that the terminal device needs to update the target cell to the PSCell of the terminal device. And the network equipment sends third information to the terminal equipment, wherein the third information is used for indicating the terminal equipment to update the target cell into the PSCell of the terminal equipment. And the terminal equipment determines that the target cell needs to be updated to 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 to be the PSCell of the terminal equipment.

In this embodiment, 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, where the current SCG of the terminal device is in a suspended state, or the target state of the target SCG is in a suspended state, or the current SCG of the terminal device is in a suspended state and the target state of the target SCG is in a suspended state.

In the method for updating a master cell of an auxiliary cell group provided in this embodiment, if a current SCG of a terminal device is in a suspended state, and/or a target state of a target SCG is in the suspended state, a PSCell of the target auxiliary cell group is a target cell, 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 when the SCG is in the suspended state.

Based on 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 accesses the target cell to establish communication connection between the terminal equipment and the target cell and finish updating the target cell into the PSCell of the terminal equipment by the terminal equipment.

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

s301, the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device. And the current SCG of the terminal equipment is in a suspended state, and/or the target state of the target SCG is in the suspended 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.

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

S304, the terminal equipment accesses the target cell.

S305, after the terminal device finishes accessing the target cell, the SCG of the terminal device is set to be in a suspended state, or the SCG of the terminal device is set to be in an activated state, or the SCG of the terminal device is set to be in a target state according to the first information. The first information is used for indicating that the 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 the random access process to access the target cell. After the terminal device finishes 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 the PSCell, so the SCG is the target SCG including the target cell to be the PSCell), for example, the SCG of the terminal device may be set to be a suspended state, that is, the SCG is set to be a dormant/suspend/deactivation SCG. Or the terminal device sets the SCG of the terminal device to be the SCG activated state. Or the terminal device sets the SCG of the terminal device as the 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. If the target state indicated by the first information is the suspended state, the terminal device sets the SCG to be the suspended state according to the first information, and if the target state indicated by the first information is the activated state, the terminal device sets the SCG to be the activated state according to the first information.

Optionally, the first information may be included in the third information received by the terminal device from the network device, or the first information may be included in the fourth information received by the terminal device from the network device.

In the method for updating a master cell of an auxiliary cell group provided in this embodiment, if a current SCG of a terminal device (that is, an SCG of a terminal device before a target cell updated by the terminal device is a PSCell) is a dormant/suspend/deactivation SCG, the terminal device updates the target cell to the PSCell and then sets the SCG to the dormant/suspend/deactivation SCG, so that the terminal device completes updating the target cell to the SCGs of the terminal devices before and after the PSCell in the same state; or, the terminal device updates the target cell to the PSCell and then sets the SCG to an active state, so that the terminal device can perform data transmission with a new SCG in time. Or, if the terminal device receives first information indicating a target state of the SCG of the terminal device, the terminal device updates the target cell to be the PSCell, and then sets the SCG to be 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 a possible implementation manner, before performing the above S302, S302a may be further performed:

s302a, the terminal equipment activates the SCG of the terminal equipment.

In this embodiment, after determining that the target cell needs to be updated to 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 the PSCell. And 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 the step S304, the method further includes step S304 a:

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

In this embodiment, after determining that the target cell needs to be updated to 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 device and the target cell are synchronized, the terminal device activates the SCG of the terminal device, for example, the terminal device changes the current SCG from the suspended state to the activated state, or sets the target SCG to which the target cell belongs to the activated state. And when the SCG of the terminal equipment is in an activated state, the terminal equipment accesses 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, that is, directly perform S304a after S303.

Optionally, before performing S304a, the terminal device further includes S304 b:

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

In this embodiment, after the terminal device performs downlink synchronization with the target cell, the terminal device does not access the target cell temporarily, but waits for the network device to send the second information to the terminal device, and if the terminal device receives the second information from the network device, where the second information is used to instruct to activate the SCG of the terminal device, the terminal device activates the SCG of the terminal device according to the second information when executing the foregoing S304 a. 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 indicates that the terminal device may need to transmit data through the SCG, and the terminal device accesses the target cell again, thereby ensuring that data can be transmitted in time.

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

s401, the terminal device receives second information from the network device.

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, 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 that the SCG of the terminal device is activated. Accordingly, the terminal device receives the second information sent by the network device.

S402, the terminal equipment activates the 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 the second information to the terminal device, so that the terminal device activates the SCG of the terminal device.

And S403, the terminal device receives the third information from the network device.

In this embodiment, after the terminal device activates the SCG of the terminal device, if the network device determines that the terminal device needs to update the target cell to 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 the PSCell of the terminal device.

Optionally, the third information may be carried in a reconfiguration message about SCG sent by the network device to 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 the third information to the terminal device. Optionally, the terminal device reports the identifier information of the target cell to the network device, and the network device determines, according to the identifier information of the target cell reported by the terminal device, 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 after determining that the measurement result of the target cell meets the condition that the terminal device updates the PSCell.

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

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

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

For S405, reference may be made to the description in the related embodiments, which is not described herein again.

In the method for updating a master cell of an auxiliary cell group provided in this embodiment, a network device indicates a terminal device to activate an SCG, and then when the SCG of the terminal device is in an activated state, the network device indicates the terminal device to update a target cell to a PSCell of the terminal device, so as to ensure that the target cell is updated to the PSCell of the terminal device when the SCG of the terminal device is in the activated state.

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

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

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, the PSCell of the target secondary cell group is the 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 to the PSCell of the terminal device. And the network equipment sends third information to the terminal equipment and also sends second information to the terminal equipment, wherein the second information is used for indicating the activation of the SCG of the terminal equipment. 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 related to the SCG, which is sent by the network device to the terminal device.

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

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 the PSCell of the terminal device, and the third information includes the second information, and after receiving the third information from the network device, the terminal device executes the following S502-S504.

In another possible implementation manner, if the third information includes information 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 to the PSCell of the terminal device, and the third information does not include the second information but includes information used to instruct an 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 executes S503-S504 as follows.

Optionally, in a possible alternative of the foregoing 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 to 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 execute the following steps S503-S504.

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

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

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

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

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

And S504, the terminal equipment updates the target cell into the PSCell of the terminal equipment.

In the method for updating a master cell of an auxiliary cell group provided in this embodiment, a network device instructs a terminal device to activate an SCG while instructing the terminal device to update a target cell to a PSCell of the terminal device, so as to ensure that the target cell is updated to the PSCell of the terminal device when the SCG of the terminal device is in an activated state.

On the basis of the above-mentioned embodiment shown in fig. 4 or fig. 5, optionally, the third information is included in fifth information received by the terminal from the network device, where the fifth information is used to indicate configuration information of a target cell group to which the target cell belongs. Specifically, the terminal device receives 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 related to SCG sent by the network device to the terminal device.

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

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

In this embodiment, when the current SCG of the terminal device is in a suspended state, 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, and the third information is used for instructing 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 while not receiving 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 method for updating a master cell of an auxiliary 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 according to the configuration information of the target cell group to which the target cell belongs and maintains the SCG of the terminal device in a suspended state.

Fig. 7 is a flowchart of a primary cell updating method for 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 in this embodiment may include:

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

In this embodiment, when the current SCG of the terminal device is in a suspended state, 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 whether the measurement result of the target cell does not meet the condition that the terminal device updates the PSCell.

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

In this embodiment, when determining 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 that the SCG of the terminal device is activated. Accordingly, the terminal device receives the second information sent by the network device.

And S703, the terminal equipment activates the 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 suspend state to the active state.

S704, the terminal device evaluates whether the measurement result of the target cell meets the PSCell updating condition of the terminal device, and if yes, the target cell is determined to be updated to the PSCell of the terminal device.

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 for updating the PSCell by the terminal device, and if the measurement result of the target cell meets the condition for updating the PSCell by 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, reference may be made to the description in the related embodiments in S705, which is not described herein again.

In the method for updating a master cell of an auxiliary cell group provided in this embodiment, before the SCG of the terminal device is not activated, the terminal device stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell, until the network device indicates that the terminal device activates the SCG of the terminal device, the terminal device activates the SCG and starts evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell. And if the terminal equipment determines that the target cell needs to be updated to the PSCell of the terminal equipment according to the evaluation result, updating the target cell to the PSCell of the terminal equipment. And updating the target cell to be the PSCell of the terminal equipment when the SCG of the terminal equipment is ensured to be in an activated state.

Optionally, on the basis of any embodiment of fig. 4 to 7, after the terminal device updates the target cell to the PSCell of the terminal device, the SCG of the terminal device is set to be in a suspended state, or the SCG of the terminal device is set to be in an activated state, or the SCG of the terminal device is set to be in a target state according to the first information, where the first information is used to indicate that the SCG of the terminal device is in the target state.

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

When the UE configures the dormant/suspend/deactivation SCG, the current SCG of the UE is in dormant/suspend/deactivation state, which can be described by the following embodiments 1 to 3.

Embodiment 1: the UE receives the reconfiguration message sent by the network side without the synchronization reconfiguration message.

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 at the SN side is a dormant/suspend/deactivation state.

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

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

In this embodiment, the network device does not send a command instructing the terminal device to update the PSCell to the terminal device when the SCG of the terminal device is in the dormant/suspend/deactivation state. When the SCG of the terminal device is in an active state, the network device may instruct 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 indicates 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 a dormant/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 the reconfiguration message sent by the network side and the PSCell change command of the SCG side, where the PSCell after the UE performs the PSCell change may be referred to as a target cell. The UE performs the PSCell change procedure including the following implementation manners:

in a first possible implementation manner, 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, and performs the 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. And after the UE randomly accesses the target cell, setting the SCG of the UE to be in a dormant/suspend/deactivation state.

In a third possible implementation manner, the UE applies the new configuration, completes downlink synchronization with the target cell, immediately performs a random access procedure on the target cell, and activates the SCG of the UE. So 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 then the UE applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell. And after the UE completes the random access process, resetting the SCG of the UE to be in the dormant/suspend/deactivation state. Therefore, the state of the SCG of the UE is the same when the UE receives the PSCell change command as after the PSCell change command 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 activated state, and then the UE applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell, and then maintain the SCG of the UE in the activated state. Therefore, although the SCG is in the dormant/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 the 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 then the UE 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 SCG (including the SCG with the target cell being the PSCell) is in the dormant/suspended/deactivated state as indicated in the PSCell change command, the UE resets the SCG in the dormant/suspended/deactivated state after finishing the random access process. If the SCG (including the SCG whose target cell is the PSCell) is indicated in the PSCell change command is in an active state, the UE sets the SCG in the active state after completing the random access procedure. Therefore, the state of the SCG after the UE completes PSCell change is the same as the target state indicated in the PSCell change command.

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

In an eighth possible implementation manner, 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 activated state, the network side sends a PSCell change command to the UE; that is, the network side is not allowed to send the PSCell change command to the UE when the SCG of the UE is in the dormant/suspend/deactivation state.

Embodiment 3: the UE satisfies a condition switching configuration condition (a condition for changing the PSCell by the UE) and triggers a condition PSCell change (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 a dormant/suspend/deactivation state. The network side configures configuration condition information of a Condition PSCell Change (CPC) for the UE, wherein the configured information includes at least one candidate cell. Then step 3.2a and step 3.3a are performed, or alternatively step 3.2b is performed.

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

Step 3.3 a: the UE triggers the conditional PScell change at the SN side, and the conditional PScell change process at the SN side comprises the following implementation modes:

in a first possible implementation manner, the UE applies the new configuration to complete downlink synchronization with the target cell, but the UE does not immediately perform the random access procedure on the target cell, and performs the random access procedure when the network side activates the SCG of the UE, thereby completing the 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 then the UE applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell. And after the UE completes the random access process, resetting the SCG of the UE to be in the dormant/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 activated state, and then the UE applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access procedure on the target cell, and then maintain the SCG of the UE in the activated 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 then the UE 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 (including the SCG with the target cell being the PSCell) is configured in the conditional PSCell change configuration to be in the dormant/suspended/deactivated state, the UE resets the SCG to the dormant/suspended/deactivated state after finishing the random access process. If the target SCG is configured in the conditional PSCell change configuration to be in the activated state, the UE sets the SCG in the activated state after finishing the random access process.

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

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

Step 3.2 b: the UE does not perform the cell measurement evaluation of the CPC, but performs the cell measurement evaluation of the CPC 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 meets the execution condition of the PSCell change to determine whether to execute the conditional PSCell change.

The above embodiments 2-3 illustrate the procedure of performing PSCell change when the current SCG of the UE is in the dormant/suspend/deactivation state.

The following embodiments 4 to 7 can be used to describe the target state of the target SCG (including the SCG in which the target cell is the PSCell) as the dormant/suspended/deactivation SCG is configured, and the target state of the target SCG is represented as dormant/suspended/deactivation state.

Embodiment 4: the UE receives the reconfiguration message sent by the network side and carries the PSCell change command.

Step 4.1: the network side configures 2 nodes, 1 Main Node (MN) and 1 auxiliary node (SN) for the UE.

Step 4.2: a network side (such as an MN) sends a reconfiguration message to a 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 a PSCell after the UE performs the PSCell change may be referred to as a target cell. The UE performs the PSCell change procedure including the following implementation manners:

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 whose target cell is the PSCell) is in the dormant/suspended/deactivated 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 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 target SCG is in the dormant/suspended/deactivated state as indicated in the PSCell change command, the UE completes downlink synchronization with the target cell and immediately executes a random access process to the target cell, and then sets the SCG (the target SCG) of the UE to be in the dormant/suspended/deactivated state. And 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, immediately executes a random access process to 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 dormant/suspended/deactivated state, the UE activates the current SCG first, and then applies the new configuration to the UE, thereby completing downlink synchronization with the target cell and immediately performing a random access procedure on the target cell. If the target SCG is in the dormant/suspended/deactivated state as indicated in the PSCell change command, the UE sets the target SCG of the UE in the dormant/suspended/deactivated state after finishing the random access process. If the PSCell change command indicates that the target SCG is in an active state, the UE maintains the target SCG of the UE in the active state after completing the random access procedure.

In a fourth possible implementation manner, if the PSCell change command indicates that the target SCG is in the dormant/suspended/deactivated state, the UE does not execute the PSCell change process according to the reconfiguration message, but executes the PSCell change according to the reconfiguration message when the network side activates the SCG (the SCG may be the target SCG or the current SCG).

Embodiment 5: the UE satisfies a condition switching configuration condition (a condition for changing the PSCell by the UE) and triggers a condition PSCell change (conditional PSCell change).

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

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

Step 5.3: the UE triggers the conditional PScell change at the SN side, and the conditional PScell change process at the SN side comprises the following implementation modes:

in a first possible implementation manner, the UE applies a new configuration, and if a target SCG (including an SCG whose target cell is a PSCell) configured in the conditional PSCell change configuration is in a dormant/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, and performs the 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 configured in the conditional PSCell change configuration is in the dormant/suspended/deactivated state, the UE completes downlink synchronization with the target cell and immediately executes a random access process to the target cell, and then sets the target SCG of the UE in the dormant/suspended/deactivated state. If the target SCG configured in the conditional PSCell change configuration is in an active state, the UE completes downlink synchronization with the target cell and immediately executes a random access process to the target cell, and then sets the target SCG of the UE in the active state.

In a third possible implementation manner, if the current SCG of the UE is in the dormant/suspended/deactivated state, the UE activates the SCG first, and then the UE applies the new configuration to complete downlink synchronization with the target cell and immediately perform a random access process on the target cell. If the target SCG is configured in the conditional PSCell change configuration and is in the dormant/suspended/deactivated state, the UE sets the target SCG of the UE in the dormant/suspended/deactivated state after finishing the random access process. And if the target SCG is configured in the conditional PSCell change configuration to be in the activated state, the UE sets the target SCG of the UE to be in the activated state after finishing the random access process.

In a fourth possible implementation manner, if the target SCG state configured in the conditional PSCell change configuration is a dormant/suspended/deactivated state, the UE does not execute the conditional PSCell change process, but executes the conditional PSCell change when the network side activates the SCG (the SCG 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, whose measurement result evaluation satisfies the execution condition of the conditional PSCell change, to the network side, and the network side makes a decision.

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

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

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

Step 6.3: the method comprises the following steps that 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 implementation modes:

in a first possible implementation manner, the UE applies the new configuration, and if the added SCG (including the SCG whose target cell is the PSCell) indicated in the PSCell addition command is in the dormant/suspended/deactivated state, the UE completes downlink synchronization with the target cell, but the UE does not immediately perform the random access process on the target cell, but performs the random access process when the network side activates the newly added SCG.

In a second possible implementation, the UE applies the new configuration. If the added SCG is in the dormant/suspended/deactivated state indicated in the PSCell addition command, the UE completes downlink synchronization with the target cell and immediately executes a random access process to the target cell, and then sets the SCG newly added by the UE to be in the dormant/suspended/deactivated state. If the added SCG is indicated to be in the activated state in the PSCell addition command, the UE completes downlink synchronization with the target cell and immediately executes a random access process to the target cell, and then sets the SCG newly added by the UE to be in the activated state.

In a third possible implementation manner, the UE activates the added SCG, applies the new configuration, completes downlink synchronization with the target cell, and immediately performs a random access procedure on the target cell. And if the added SCG is in the dormant state indicated in the PSCell addition command, the UE sets the SCG of the UE in the dormant state after finishing 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 finishing the random access process.

In a fourth possible implementation manner, if the added SCG state indicated in the PSCell addition command is a dormant/suspended/deactivated state, the UE does not execute the PSCell addition process according to the reconfiguration message, but executes PSCell addition according to the reconfiguration message when the network side activates an SCG (the SCG is an SCG to be added).

Embodiment 7: the UE satisfies the configuration condition of the condition addition (the condition that the UE adds the PSCell) and triggers the condition PSCell addition (the conditional PSCell addition)

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

Step 7.2: the UE performs a cell measurement evaluation of the conditional PSCell addition, where the measurement evaluation of one or more candidate cells (hereinafter referred to as target cells) exists that satisfies the execution condition of the conditional PSCell addition.

Step 7.3: the UE triggers a conditional PSCell addition process, which comprises the following implementation modes:

in a first possible implementation manner, the UE applies a new configuration, and if the added SCG (including the SCG with the target cell being the PSCell) configured in the conditional PSCell addition configuration is in a dormant/suspended/deactivated 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, and 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 in the conditional PSCell addition configuration to be in the dormant/suspended/deactivated state, the UE completes the downlink synchronization with the target cell and immediately executes the random access process, and then the added SCG of the UE is set to be in the dormant/suspended/deactivated state. If the added SCG is configured in the conditional PSCell addition configuration and is in an activated state, the UE completes downlink synchronization with the target cell and immediately executes a random access process, and then sets the SCG newly added by the UE to be in the activated state.

In a third possible implementation manner, the UE activates the added SCG, 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 added SCG is configured in the conditional PSCell addition configuration as the dormant state, the UE sets the SCG of the UE as the dormant state after finishing the random access process. If the added SCG is configured in the conditional PSCell addition configuration as an active state, the UE maintains the SCG of the UE in the active state after finishing the random access process.

In a fourth possible implementation manner, if the state of the SCG configured for adding in the conditional PSCell addition configuration is the dormant/suspended/deactivated state, the conditional PSCell addition process is not executed, but the conditional PSCell addition is executed 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, whose measurement result evaluation satisfies the execution condition of the conditional PSCell addition, to the network side, and the network side makes a decision.

According to the embodiments, for a multi-connection scenario, the current SCG of the UE is in the dormant/suspend/deactivation state, and when the UE needs to perform PSCell change or PSCell addition, the UE may access a target cell (change or add PSCell) and then set the SCG in the dormant/suspend/deactivation state, or wait for the network side to activate the SCG of the UE and then trigger access to the target cell. Or, the target SCG (including the SCG with the target cell being the PSCell) of the UE is configured in the dormant/suspended/deactivated state, and when the UE needs to perform PSCell change, PSCell addition or conditional PSCell addition/change, the UE may set the SCG in the dormant/suspended/deactivated state after accessing the target cell or trigger the access to the target cell after the network activates the SCG.

On the terminal side, the present application provides a master cell updating apparatus for a secondary cell group, as shown in fig. 8, a master cell updating apparatus 800 for a secondary cell group in this embodiment may be a terminal device, and the master cell updating apparatus 800 for a 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 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 802 and various circuits of memory represented by memory 803 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 801 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. Optionally, the apparatus 800 for updating a primary cell of a secondary cell group may further include a user interface 804, and for different user equipments, the user interface 804 may also be an interface capable of externally connecting and internally connecting a desired equipment, where the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

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 (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also adopt a multi-core architecture.

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

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

and updating the target cell to be the PSCell of the terminal equipment.

synchronizing with the downlink of the 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 of the target cell is finished, 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 activated 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, the processor 802 further performs the following operations:

Optionally, accessing the target cell includes:

Optionally, the processor 802 further performs the following operations:

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

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

On the network side, an embodiment of the present application provides a master cell updating apparatus for a secondary cell group, as shown in fig. 9, a master cell updating apparatus 900 for a secondary cell group in this embodiment may be a network device, and the master cell updating apparatus 900 for a 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, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented 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 peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 901 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic 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 a CPU, ASIC, FPGA or CPLD, or the processor may employ a multi-core architecture.

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

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 apparatus provided in the present application can implement all the method steps implemented by the network device in the foregoing method embodiment, and can achieve the same technical effect, and details of the same parts and beneficial effects as those in the method embodiment are not described herein again.

On the terminal side, an embodiment of the present application further provides a master cell updating apparatus for a secondary cell group, as shown in fig. 10, a master cell updating apparatus 1000 for a secondary cell group in this embodiment may be a terminal device, and the master cell updating apparatus 1000 for a 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 the target secondary cell group is in the suspended state, and the PSCell of the target secondary cell group is the target cell;

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

Optionally, the processing unit 1002 is specifically configured to:

synchronizing with the downlink of the target cell;

and accessing the target cell.

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

The processing unit 1002 is further configured to: after the access of the target cell is finished, 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 activated 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, the processing unit 1002 is further configured to activate the secondary cell group of the terminal device before the target cell is updated to the PSCell of the terminal device; alternatively, the first and second electrodes may be,

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 a target cell, receiving second information from the network equipment, wherein the second information is used for indicating to activate an auxiliary 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.

Optionally, the apparatus 1000 for updating a primary cell of a secondary cell group in this 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, receive the second information from the network device at the same time;

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

Optionally, the determining unit 1001 is specifically configured to:

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

the processing unit 1002 is further configured to, if the fifth information does not include the third information, apply, by the terminal device, 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 receiving unit 1003 is further configured to receive second information from the network device before the determining unit 1001 determines that the target cell needs to be updated to the PSCell of the terminal device, where the second information is used to indicate that the terminal device is activated; before the receiving unit 1003 receives the second information, the processing unit 1002 stops evaluating whether the measurement result of the target cell meets the condition that the terminal device updates the PSCell;

the processing unit 1002 is further configured to activate, after the receiving unit 1003 receives the second information from the network device, the secondary cell group of the terminal device according to the second information, and evaluate whether the 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 that the terminal device updates the PSCell, it is determined that the target cell needs to be updated to the PSCell of the terminal device.

On the network side, an embodiment of the present application further provides a master cell updating apparatus for a secondary cell group, as shown in fig. 11, a master cell updating apparatus 1100 for a secondary cell group in this embodiment may be a network device, and the master cell updating apparatus 1100 for 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 to activate the secondary cell group of the 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 a PSCell of the target secondary cell group is a 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 indicate that the terminal device updates the target cell to the PSCell of the terminal device, and then the secondary cell of the terminal device is in the target state.

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

Optionally, the sending unit 1102 is further configured to: when the second information is sent to the terminal equipment, the third information is sent to the terminal equipment at the same time; or after the second information is sent to the terminal device, the third information is sent to the terminal device.

Optionally, the apparatus 1100 for updating a master cell of a secondary cell group of this embodiment further includes a receiving unit 1103.

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

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.

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

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

On the terminal side, an embodiment of the present application provides a processor-readable storage medium, where a computer program is stored, and the computer program is configured to cause a processor to execute any one of the methods provided in the embodiment of the present application in relation to a terminal device. The processor is enabled to implement all the method steps implemented by the terminal device in the above method embodiment, and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted here.

On the network side, an embodiment of the present application provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is configured to enable a processor to execute any one of the methods provided in the embodiment of the present application with respect to a network device. The processor is enabled to implement all the method steps implemented by the network device in the foregoing method embodiment, and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted here.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

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

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

and the terminal equipment updates the target cell to the PSCell of the terminal equipment.

2. The method of claim 1, wherein the updating, by the terminal device, the target cell to the PSCell of the terminal device comprises:

the terminal equipment and the target cell are in downlink synchronization;

and the terminal equipment accesses the target cell.

3. The method of claim 2,

the accessing of the terminal equipment to the target cell comprises the following steps:

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

4. The method according to claim 2 or 3, wherein before the terminal device updates the target cell to the PSCell of the terminal device, further comprising: the terminal equipment activates an auxiliary cell group of the terminal equipment; alternatively, the first and second electrodes may be,

5. The method of claim 2,

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

6. The method according to any of claims 1-3, wherein before the terminal device updates the target cell to the PSCell of the terminal device, further comprising:

before the terminal device determines that a target cell needs to be updated to the PSCell of the terminal device, the terminal device receives second information from a network device; 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 the secondary cell group of the terminal equipment, and the third information is used for indicating the terminal equipment to update the target cell to the PSCell of the terminal equipment;

7. The method according to any of claims 1-3, wherein the determining, by the terminal device, that the target cell needs to be updated to the PSCell of the terminal device comprises:

the terminal equipment receives third information from network equipment, and determines that a 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; alternatively, the first and second electrodes may be,

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

8. The method according to any of claims 1-3, wherein the terminal device receives fourth information from a network device indicating a condition for the terminal device to update the PSCell, and the terminal device determines that the target cell needs to be updated to the PSCell of the terminal device, including:

9. The method of claim 7, further comprising:

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;

10. The method according to any of claims 1-3, wherein the current secondary cell group of the terminal device is in a suspended state, and the terminal device determines that it needs to update the target cell to be before the PSCell of the terminal device, further comprising:

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; before the terminal equipment receives the second information, stopping evaluating whether the measurement result of the target cell meets the condition that the terminal equipment updates the PSCell;

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

the determining, by the terminal device, 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 meets 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.

11. A method for updating a primary cell of a secondary cell group, the method comprising:

the network equipment generates second information, wherein the second information is used for indicating to activate an auxiliary cell group of the terminal equipment, the current auxiliary cell group of the terminal equipment is in a suspended state, and/or the target state of a target auxiliary cell group is in the suspended state, and a PSCell of the target auxiliary cell group is the target cell;

12. The method of claim 11, further comprising:

and the network equipment sends first information to the terminal equipment, wherein the first information is used for indicating that the auxiliary cell group of the terminal equipment is in a target state after the terminal equipment updates the target cell to the PSCell of the terminal.

13. The method according to claim 11 or 12, wherein before the network device generates the second information, further comprising:

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

14. The method of claim 13, further comprising:

the network equipment simultaneously sends third information to the terminal equipment while sending the second information to the terminal equipment; alternatively, the first and second electrodes may be,

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

wherein the third information is used for instructing the terminal device to update the target cell to the PSCell of the terminal device.

15. The method of claim 13, wherein the network device determines that a terminal device needs to update a target cell to a PSCell of the terminal device before, further comprising:

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

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.

16. The method of claim 11, wherein before the network device sends the second information to the terminal device, the method further comprises:

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

the memory for storing a computer program;

the transceiver is used for transceiving data under the control of the processor;

the processor is used for reading the computer program in the memory and executing the following operations:

determining a primary cell PSCell of an auxiliary cell group needing to be updated to a terminal device, wherein the current auxiliary cell group of the terminal device is in a suspended state, and/or the target state of the target auxiliary cell group is in the suspended state, and the PSCell of the target auxiliary cell group is the target cell;

and updating the target cell to be the PSCell of the terminal equipment.

18. The apparatus of claim 17, wherein the updating the target cell to the PSCell of the terminal device comprises:

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

synchronizing with the downlink of the target cell;

and accessing the target cell.

19. The apparatus of claim 18,

the accessing the target cell includes:

triggering a random access process to access the target cell;

the processor further performs the following operations: after the target cell is accessed, 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 activated 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.

20. The apparatus of claim 18 or 19, wherein the processor further performs the following:

before updating the target cell to the PSCell of the terminal equipment, activating an auxiliary cell group of the terminal equipment; alternatively, the first and second electrodes may be,

21. The apparatus of claim 18,

the accessing the target cell includes:

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

22. The apparatus of any of claims 17-19, wherein the processor further performs the following:

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

23. The apparatus according to any of claims 17-19, wherein the determining that the target cell needs to be updated to the PSCell of the terminal device comprises:

receiving third information from a network device, and determining that a target cell needs to be updated to the PSCell of the terminal device according to the 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; alternatively, the first and second electrodes may be,

receiving fourth information from a network device, where the fourth information is used to indicate a condition that the terminal device updates a PSCell, and if it is evaluated that a measurement result of the target cell meets the condition that the terminal device updates the PSCell, determining that the target cell needs to be updated to the PSCell of the terminal device.

24. The apparatus according to any of claims 17-19, wherein the terminal device receives fourth information from a network device indicating a condition for the terminal device to update the PSCell, and wherein the determining that the target cell needs to be updated to the PSCell of the terminal device comprises:

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

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;

26. The apparatus of any of claims 17-19, wherein the current secondary cell group of the terminal device is in a suspended state, and wherein the processor is further configured to:

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

after receiving second information from network equipment, activating an auxiliary cell group of the terminal equipment according to the second information, and evaluating whether a measurement result of the target cell meets a condition that the terminal equipment 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 meets the condition that the terminal equipment updates the PSCell, determining that the target cell needs to be updated to the PSCell of the terminal equipment.

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

the memory for storing a computer program;

generating second information, wherein the second information is used for indicating to activate an auxiliary cell group of a terminal device, a current auxiliary cell group of the terminal device is in a suspended state, and/or a target state of a target auxiliary cell group is in the suspended state, and a PSCell of the target auxiliary cell group is the target cell;

and sending the second information to the terminal equipment.

28. The apparatus of claim 27, 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 auxiliary cell group of the terminal equipment is in a target state after the terminal equipment updates the target cell to the PSCell of the terminal.

29. The apparatus of claim 27 or 28, wherein the processor further performs the following:

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

30. The apparatus of claim 29, wherein the processor further performs the following:

when the second information is sent to the terminal equipment, third information is sent to the terminal equipment at the same time; alternatively, the first and second electrodes may be,

31. The apparatus of claim 29, wherein the processor further performs the following:

before determining that a terminal device needs to update a target cell to 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:

32. The apparatus of claim 27, wherein the processor further performs the following:

and sending fourth information to the terminal equipment before sending the second information to the terminal equipment, wherein the fourth information is used for indicating the condition that the terminal equipment updates the PSCell.

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

a determining unit, configured to determine a primary cell PSCell of an auxiliary cell group that needs to update a target cell to a terminal device, where a current auxiliary cell group of the terminal device is in a suspended state, and/or a target state of the target auxiliary cell group is in the suspended state, and the PSCell of the target auxiliary cell group is the target cell;

and the processing unit is used for updating the target cell to the PSCell of the terminal equipment.

34. 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 to activate an auxiliary cell group of the terminal equipment, the current auxiliary cell group of the terminal equipment is in a suspended state, and/or a target state of a target auxiliary cell group is in the suspended state, and a PSCell of the target auxiliary cell group is the target cell;

35. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 10 or the method of any one of claims 11-16.