WO2023227090A1

WO2023227090A1 - Cell updating method and apparatus for secondary cell group, and storage medium

Info

Publication number: WO2023227090A1
Application number: PCT/CN2023/096439
Authority: WO
Inventors: 邓云
Original assignee: 展讯通信（上海）有限公司
Priority date: 2022-05-27
Filing date: 2023-05-26
Publication date: 2023-11-30
Also published as: CN117177320A

Abstract

Provided in the present application are a cell updating method and apparatus for a secondary cell group, and a storage medium. The cell updating method comprises: after a terminal device has configured a primary secondary cell conditional update, determining whether candidate primary secondary cells meet an update execution condition; and in response to there being a candidate primary secondary cell that meets the update execution condition, the terminal device having not accessed the candidate primary secondary cell, and having received a layer 1 or layer 2 update command for a target primary secondary cell, executing an update on the candidate primary secondary cell or an update on the target primary secondary cell. The present application provides an implementation solution for flexibly performing a cell update when there are a primary secondary cell conditional update and a layer 1 or layer 2 update.

Description

Cell update method, device and storage medium for secondary cell group

This application claims the priority of the Chinese patent application submitted to the China Patent Office on May 27, 2022, with the application number 202210591005.0 and the invention title "Cell update method, device and storage medium for auxiliary cell group", and its entire content is approved by This reference is incorporated into this application.

Technical field

The present application relates to the field of communication technology, and in particular, to a cell update method, device and storage medium for a secondary cell group.

Background technique

In wireless communications, in order to meet the mobility requirements of users, the network side can enable the terminal device to access the target cell from the source cell through handover. Once the terminal device receives the handover command sent by the network side, it accesses the target cell according to the target cell information contained in the handover command. The above handover is called legacy handover or layer 3 handover. A conditional handover mechanism is introduced in wireless communications: The biggest difference between this handover process and the original handover process is that the handover command contains a handover condition (also called handover execution condition) judged by the terminal device. ), such as determining whether the signal quality of the candidate target cell is higher than the signal quality of the serving cell by a predetermined offset. After receiving the handover command, the terminal device determines whether the handover execution conditions are met. When the conditions are met, the terminal device uses the configuration parameters of the candidate target cell contained in the handover command to access the target cell, obtains synchronization with the target cell, initiates a random access process in the target cell, and after sending the handover completion command, the terminal device implements Switch to the target cell; if the handover conditions are not met, the terminal device continues to maintain the Radio Resource Control (RRC) connection with the source base station. The source base station can configure multiple candidate target cells and corresponding handover execution conditions.

Establish multi-radio access technology dual connection (Multi-Radio Access Technology Dual Connectivity (MR-DC), the terminal equipment is configured with a Master Cell Group (MCG) and a Secondary Cell Group (SCG), where the secondary cell group side at least contains the primary and secondary cells (PSCell). Optionally, a secondary cell (SCell) may also be included. The secondary cell group side can also configure a conditional switching mechanism, which is called conditional update, that is, conditional PSCell Change (CPC). Currently, it is considered to introduce a new switching method, Layer 1 or Layer 2 update (L1/L2 based inter-cell mobility), through Layer 1, which is the physical layer, or Layer 2, such as the Media Access Control (Medium Access Control, MAC) layer. Trigger the terminal equipment to perform handover from the source cell to the target cell.

However, when layer 1 or layer 2 updates are introduced on the secondary cell group side, for example, after PSCell/SCell configures layer 1 or layer 2 updates for the terminal equipment, the network may also configure primary and secondary cell condition updates for the terminal equipment, such as the primary and secondary cell conditions of the terminal equipment. The base station configures conditional updates for the end device. In this case, how the terminal equipment performs cell update is an urgent technical issue that needs to be solved.

Contents of the invention

This application provides a cell update method and device for a secondary cell group, and provides an implementation solution for flexibly performing cell updates when there are condition updates of primary and secondary cells and layer 1 or layer 2 updates.

In order to achieve the above objectives, this application provides the following technical solutions:

In a first aspect, a cell update method for a secondary cell group is provided. The cell update method for a secondary cell group includes: after the terminal device is configured with a primary and secondary cell condition update, determining whether each candidate primary and secondary cell is The update execution condition is met; in response to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, An update to the candidate primary and secondary cell or an update to the target primary and secondary cell is performed.

Optionally, performing an update to the candidate primary and secondary cells includes: receiving update indication information, where the update indication information is used to indicate that the update command is preferentially executed according to the layer 1 or layer 2 update command. Perform cell update or perform cell update on the candidate primary and secondary cells first; perform cell update according to the update instruction information.

Optionally, performing a cell update to the candidate primary and secondary cell or a cell update to the target primary and secondary cell includes: performing a cell update to the target primary and secondary cell.

Optionally, performing a cell update to the candidate primary and secondary cell or a cell update to the target primary and secondary cell includes: when the configuration of the condition update corresponding to the candidate primary and secondary cell comes from the primary base station, performing a cell update to the target primary and secondary cell. Cell update of the candidate primary and secondary cells; otherwise, cell update to the target primary and secondary cells is performed.

Optionally, performing cell update to the candidate primary and secondary cells or cell update to the target primary and secondary cells includes: determining whether the target primary and secondary cells are consistent with the candidate primary and secondary cells; if the If the target primary and secondary cells are consistent with the candidate primary and secondary cells, the layer 1 or layer 2 update command is executed.

Optionally, the cell update method also includes: if a layer 1 or layer 2 update command for the target primary and secondary cells and a primary and secondary cell update command from the primary base station or an update command of the primary cell are simultaneously received, executing the primary and secondary cells. Cell update command or primary cell update command.

In the second aspect, this application also provides a cell update method for a secondary cell group, which is used in a secondary base station. The cell update method includes: if the terminal device supports simultaneous configuration of layer 1 or layer 2 update and conditional update, then Configure the primary and secondary cell condition update for the terminal device; send a layer 1 or layer 2 update command for the target primary and secondary cell, the layer 1 or layer 2 update command is when there is a candidate primary and secondary cell that satisfies the update execution condition, and the The layer 1 or layer 2 update command is sent when the terminal device has not yet accessed the candidate primary and secondary cells. The layer 1 or layer 2 update command is used for the terminal device to perform updates to the candidate primary and secondary cells or to the target primary and secondary cells. renew.

Optionally, the cell update method also includes: if the terminal equipment does not support simultaneous configuration of layer 1 or layer 2 update and conditional update, sending to the main base station that the terminal equipment has been configured for the layer 1 or layer 2 update. Parameters or sending indication information, the indication information is used to indicate not to configure the primary and secondary cell condition update.

Optionally, the cell update method further includes: after the update is completed, sending an update configuration message to the master base station, where the update configuration message is used to indicate that parameters for the layer 1 or layer 2 update are not configured.

In a third aspect, a cell update device is provided. The device includes: a judgment module configured to judge whether each candidate primary and secondary cell satisfies the update execution condition after the terminal device is configured with a condition update of the primary and secondary cells; first An update module configured to respond to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, An update to the candidate primary and secondary cell or an update to the target primary and secondary cell is performed.

In a fourth aspect, a cell update device is provided, which device includes: a configuration module for configuring primary and secondary cell condition updates for terminal equipment; and a second update module for sending layer 1 or layer 1 information for the target primary and secondary cells. 2 update command, the layer 1 or layer 2 update command is sent when there is a candidate primary and secondary cell that satisfies the update execution condition, and the terminal device has not yet accessed the candidate primary and secondary cell. The layer 1 or layer 2 update command is The layer 2 update command is used for the terminal device to perform an update to the candidate primary and secondary cells or an update to the target primary and secondary cells.

A fifth aspect provides a computer-readable storage medium on which a computer program is stored, and the computer program is run by a processor to execute any method provided in the first aspect or the second aspect.

A sixth aspect provides a communication device, including a memory and a processor. The memory stores a computer program that can be run on the processor. The processor runs the computer program to execute any method provided in the first aspect.

A seventh aspect provides a communication device, including a memory and a processor. The memory stores a computer program that can be run on the processor. It is characterized in that the processor runs the computer program to execute any of the methods provided in the second aspect. method.

In an eighth aspect, a computer program product is provided, a computer program is stored thereon, and the computer program is run by a processor to execute any one of the methods provided in the first aspect or the second aspect. method.

In a ninth aspect, a communication system is provided, including the above terminal device and the above network device.

Compared with the existing technology, the technical solutions of the embodiments of the present application have the following beneficial effects:

In the technical solution of this application, after the terminal device is configured with the condition update of the primary and secondary cells, it can determine whether each candidate primary and secondary cell meets the update execution conditions. In response to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, executes updating to the candidate primary and secondary cell. Update of primary and secondary cells or update to the target primary and secondary cells. When the terminal equipment supports two cell update methods, that is, it supports both primary and secondary cell condition updates and layer 1 or layer 2 updates, and both cell update methods can be executed, since different cell update methods can meet different requirements. needs, so the terminal device can select one of the cell update methods to perform cell update according to its own needs or network instructions, achieving flexibility in cell update.

Further, it is determined whether the target primary and secondary cells are consistent with the candidate primary and secondary cells; if the target primary and secondary cells are consistent with the candidate primary and secondary cells, a layer 1 or layer 2 update command is executed. In the embodiment of the present invention, when the target primary and secondary cells are consistent with the candidate primary and secondary cells, the layer 1 or layer 2 update method is used to update the cells. In this way, the user plane delay in the cell update process can be significantly reduced, thereby satisfying the terminal requirements. The device side has high latency requirements and improves user experience.

Description of the drawings

Figure 1 is a flow chart of a cell update method for a secondary cell group provided by an embodiment of the present application;

Figure 2 is an interactive flow chart of a cell update method for a secondary cell group provided by an embodiment of the present application;

Figure 3 is an interactive flow chart of another cell update method for a secondary cell group provided by an embodiment of the present application;

Figure 4 is an interactive flow chart of yet another cell update method for a secondary cell group provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of a cell update device for a secondary cell group provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of another cell update device for a secondary cell group provided by an embodiment of the present application;

Figure 7 is a schematic diagram of the hardware structure of a cell update device for a secondary cell group provided by an embodiment of the present application.

Detailed ways

Communication systems applicable to the embodiments of this application include but are not limited to long term evolution (LTE) systems, fifth-generation (5th-generation, 5G) systems, NR systems, and future evolution systems or multiple communication convergence systems. Among them, the 5G system may be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The technical solution of this application is also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, Vehicle-to-Everything (vehicle to any object communication) architecture and other architectures.

This application mainly relates to communication between terminal equipment and network equipment. in:

The network device in the embodiment of the present application may also be called an access network device. For example, it may be a base station (BS) (also called a base station device). The network device is a device deployed on a wireless access network (Radio Access Network (RAN) is a device used to provide wireless communication functions. For example, equipment that provides base station functions in the second generation (2nd-generation, 2G) network includes base transceiver stations (BTS), and equipment that provides base station functions in the third generation (3rd-generation, 3G) network includes NodeB (NodeB), the equipment that provides base station functions in the fourth generation (4th-generation, 4G) network includes evolved NodeB (eNB), in wireless local area networks (WLAN), The equipment that provides base station functions is an access point (AP). The equipment that provides base station functions in NR is the next generation base station node. node base station (gNB), and the evolving node B (ng-eNB), in which NR technology is used to communicate between gNB and terminal equipment, and evolved general terrestrial radio access (Evolved) is used between ng-eNB and terminal equipment. Universal Terrestrial Radio Access (E-UTRA) technology communicates, and both gNB and ng-eNB can be connected to the 5G core network. The network equipment in the embodiment of the present application also includes equipment that provides base station functions in new communication systems in the future.

Terminal equipment (terminal equipment) in the embodiments of this application may refer to various forms of access terminals, user units, user stations, mobile stations, mobile stations (MS), remote stations, remote terminals, mobile devices, users Terminal, wireless communication equipment, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in future 5G networks or future evolved Public Land Mobile Communications Networks (Public Land Mobile Network, PLMN) Terminal equipment, etc., the embodiments of this application are not limited to this. Terminal equipment can also be called user equipment (User Equipment), terminal, etc.

As mentioned in the background art, when the secondary cell group side introduces layer 1 or layer 2 update, for example, after PSCell/SCell configures layer 1 or layer 2 update for the terminal device, the network may also configure the primary and secondary cell condition update for the terminal device. For example, the main base station of the terminal device configures conditional updates for the terminal device. In this case, how the terminal equipment performs cell update is an urgent technical issue that needs to be solved.

In the technical solution of this application, after the terminal device is configured with the condition update of the primary and secondary cells, it can determine whether each candidate primary and secondary cell meets the update execution conditions. In response to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, executes updating to the candidate primary and secondary cell. Update of primary and secondary cells or update to the target primary and secondary cells. The terminal equipment supports two cell update methods, that is, it supports both primary and secondary cell condition updates and layer 1 or When layer 2 update is performed and both cell update methods can be executed, since different cell update methods can meet different needs, the terminal device can select one of the cell update methods for cell update according to its own needs or network instructions. The flexibility of cell update is achieved.

Referring to Figure 1, the methods provided in this application include:

Step 101: After the terminal device configures the condition update of the primary and secondary cells, the terminal device determines whether each candidate primary and secondary cell meets the update execution conditions.

Specifically, the number of candidate primary and secondary cells may be one or more.

Step 102: In response to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, execute the update command. Update of the candidate primary and secondary cells or update to the target primary and secondary cells.

In step 102, the fact that the terminal device has not yet accessed the candidate primary and secondary cells may also mean that the terminal device has not yet sent signaling containing the candidate primary and secondary cell information that satisfies the update execution conditions to the primary base station.

It should be pointed out that the sequence numbers of each step in this embodiment do not limit the execution order of each step.

It can be understood that, in a specific implementation, the cell update method can be implemented in the form of a software program, and the software program runs in a processor integrated within a chip or chip module. This method can also be implemented using software combined with hardware, which is not limited by this application.

In the embodiment of the present invention, the layer 1 or layer 2 update may also be called layer 1 or layer 2 mobility (L1/L2 inter-cell mobility), or any other implementable name, which is not limited by this application.

The cell update method in the embodiment of the present invention is used in the secondary cell group. That is to say, the cell update in the embodiment of the present invention refers to the update of the primary and secondary cells.

In this embodiment of the present invention, the primary and secondary cell conditions of the terminal equipment may be updated by the primary base station. configured, or configured by the secondary base station. The terminal device can receive the primary and secondary cell condition update configuration from the primary base station, can also receive the primary and secondary cell condition update configuration from the secondary base station, and can also receive the primary and secondary cell condition update configuration from the primary base station and the secondary base station at the same time. Different primary and secondary cell condition update configurations can be associated with different candidate primary and secondary cells, or with the same candidate primary and secondary cells.

In the embodiment of the present invention, when the terminal equipment supports two cell update methods, that is, it supports both primary and secondary cell condition updates and layer 1 or layer 2 updates, and both cell update methods can be executed, due to different cell update methods It can meet different needs, so the terminal device can select one of the cell update methods to perform cell update according to its own needs or network instructions, achieving flexibility in cell update.

In the specific implementation, the terminal device accesses the primary cell PCell, establishes an RRC connection, and establishes a data radio bearer to start services. The serving cell configures measurements for the terminal equipment so that the terminal equipment can measure neighboring cells and serving cells and report measurement reports. The primary cell PCell can make handover decisions based on measurement reports and other factors such as cell load. Based on the service requirements and measurement reports of the terminal equipment, the primary cell PCell configures dual connectivity for the terminal equipment, that is, configures a secondary cell group. The secondary cell group side contains at least one primary and secondary cell PSCell, and optionally one or more secondary cells SCell. Because the terminal equipment is mobile, the network needs to consider the update of the primary and secondary cells (PSCell Change).

The primary and secondary cell PSCell configures parameters for the layer 1 or layer 2 update process for the terminal device. The primary and secondary cell PSCell selects a target primary and secondary cell Cell1. The target primary and secondary cell Cell1 and the current primary and secondary cell PSCell can belong to the same secondary cell. The base station may also belong to a different secondary base station from the current PSCell. After the primary and secondary cell PSCell negotiates with the target primary and secondary cell Cell1, configure the configuration parameters for the terminal device that the terminal device needs to detect the reference signal of the target primary and secondary cell Cell1 and report the channel state information related to the target primary and secondary cell Cell1. For example, the terminal device needs to detect The layer 1 reference signal receiving power (RSRP) of the target primary and secondary cell Cell1, and the L1RSRP reported to the current primary and secondary cell PSCell. The terminal device continues to maintain the connection with the current PSCell before receiving the layer 1 or layer 2 primary and secondary cell update command.

The following is a detailed description of two scenarios where the terminal device supports simultaneous configuration of layer 1 or layer 2 updates and primary and secondary cell condition updates, and does not support layer 1 or layer 2 updates and primary and secondary cell condition updates at the same time.

Scenario 1: The terminal device supports simultaneous configuration of parameters for layer 1 or layer 2 update and primary and secondary cell condition update. That is, the terminal device is configured with parameters for the layer 1 or layer 2 update process, and is configured with parameters for candidate primary and secondary cell condition updates. The parameters for candidate primary and secondary cell condition updates include wireless parameters configured for the terminal device by the candidate primary and secondary cells and Conditional update execution condition.

Referring to Figure 2 together, in step 201, the serving network device sends the configuration information of the target primary and secondary cells to the terminal device.

In this embodiment, after the terminal device obtains the configuration information of the (candidate) target primary and secondary cell Cell1, that is, after obtaining the configuration parameters for the layer 1 or layer 2 update process, the network device can further configure the terminal device. Main and auxiliary cell conditions updated. It should be noted that Cell1 cannot be called the target primary and secondary cell at this time. Before the network side sends a command to update the layer 1 or layer 2 primary and secondary cells, Cell1 is a candidate target primary and secondary cell; after the terminal device receives the layer 1 Or the layer 2 primary and secondary cell update command needs to be updated to Cell1, Cell1 is the target primary and secondary cell of the terminal device.

Specifically, after receiving the configuration parameters for the layer 1 or layer 2 update process, the terminal device reports channel state information related to the target primary and secondary cell Cell1.

In step 202, the terminal device evaluates whether each candidate primary and secondary cell meets the update execution condition.

In a specific implementation, after receiving the condition update configuration of the primary and secondary cells, the terminal device begins to evaluate the candidate primary and secondary cells, and evaluates whether the candidate primary and secondary cells meet the update execution conditions of the corresponding primary and secondary cells.

Once a candidate primary and secondary cell meets the update execution conditions, the terminal device starts to execute the primary and secondary cell condition update process and begins to access the candidate primary and secondary cells that meet the conditions.

In step 203, the service network device sends a layer 1 or layer 2 update command to the terminal device. make.

In specific implementation, after the terminal device starts to evaluate the candidate primary and secondary cells for a period of time, the terminal device finds that a candidate primary and secondary cell satisfies the update execution conditions. Before the terminal device has accessed the candidate primary and secondary cells or before the terminal device has reported the candidate primary and secondary cell information that meets the update execution conditions to the primary base station, the terminal device has also received the layer 1 or layer 2 update command sent by the primary and secondary cells.

In this case, the terminal device may perform step 204 or step 205.

In step 204, the terminal device performs update to the candidate primary and secondary cells.

In this embodiment, the terminal device performs the condition update of the primary and secondary cells. The terminal device preferentially performs the condition update of the primary and secondary cells because the evaluation of the update conditions of the primary and secondary cells examines the candidate primary and secondary cells after layer 3 smoothing filtering within a period of time. Signal quality is more reliable than only considering changes in layer 1 channel quality in layer 1 or layer 2 updates. Another consideration is that after the secondary base station configures layer 1 or layer 2 update, it usually does not configure the primary and secondary cell condition update (SN initiated CPC) initiated by the secondary base station, but the primary base station may be the terminal device based on its own judgment. Configure the primary and secondary cell condition update (MN initiated CPC) initiated by the primary base station. At this time, the primary and secondary cell condition update configuration originates from the primary base station. The terminal device performing the primary and secondary cell condition update is equivalent to accepting the instructions sent by the primary base station. For terminal equipment, it prioritizes executing instructions from the main base station.

In step 205, the terminal device performs update to the target primary and secondary cells.

In this embodiment, the terminal device executes a layer 1 or layer 2 update command. Considering that the network device can refer to more information in time when configuring the target primary and secondary cells, such as the load information between cells, etc., the performance of the target primary and secondary cells is better, so the terminal device can execute the layer 1 or layer 2 update command. Executing layer 1 or layer 2 update commands can help reduce the service plane interruption delay of terminal equipment during movement. This is because executing layer 1 or layer 2 update commands sometimes does not require a random access process and the access efficiency is higher. . In high-latency business scenarios, terminal equipment executing layer 1 or layer 2 update commands to perform cell updates can better meet business needs.

In another non-limiting embodiment of the present invention, please refer to FIG. 3 . Different from the previous embodiment, in step 301, the terminal device determines whether the target primary and secondary cells (ie, the primary and secondary cells indicated in the layer 1 or layer 2 update command) are consistent with the candidate primary and secondary cells. That is, it is determined whether the target primary and secondary cells and the candidate primary and secondary cells are the same cell.

In step 302, when the target primary and secondary cells are consistent with the candidate primary and secondary cells, the terminal device executes a layer 1 or layer 2 update command.

In the embodiment of the present invention, the terminal device executing the layer 1 or layer 2 update command helps to reduce the service plane interruption delay of the terminal device during movement.

Of course, if the target primary and secondary cells are inconsistent with the candidate primary and secondary cells, the terminal device can independently decide which method to use to update the cell. For example, the terminal device can perform step 204 or step 205.

In another embodiment of the present invention, before the terminal equipment performs the update of the primary and secondary cells, update indication information may be received from the network side, such as the primary base station or the secondary base station. The update indication information is used to indicate priority execution according to the layer 1 or layer 2 update command. The primary and secondary cells are updated or the cell update is performed on the candidate primary and secondary cells first; the terminal device performs the cell update according to the update instruction information. If the update instruction information is used to indicate that the primary and secondary cells are updated preferentially according to the layer 1 or layer 2 update command, then after the above step S203, step S205 is performed.

Scenario 2: The terminal device does not support simultaneous configuration of parameters for layer 1 or layer 2 update and primary and secondary cell condition update parameters.

In the embodiment of the present invention, the term "not supporting simultaneous configuration of parameters for layer 1 or layer 2 update and primary and secondary cell condition update parameters" may mean that the terminal device does not support simultaneous configuration of parameters for layer 1 or layer 2 update and primary and secondary cells. Conditional update parameters, it can also be that the secondary base station does not support configuring parameters for layer 1 or layer 2 update and primary and secondary cell conditional update parameters for terminal equipment at the same time. It can also be that both the secondary base station and the terminal equipment do not support configuring parameters for layer 1 at the same time. Or layer 2 update parameters and primary and secondary cell condition update parameters.

In step 401, the secondary base station sends parameters or indication information that the terminal equipment has been configured for layer 1 or layer 2 update to the master base station. Among them, the instruction information is used to indicate not to configure Main and auxiliary cell conditions updated.

In this embodiment, when the secondary base station or terminal equipment does not support simultaneous configuration of parameters for layer 1 or layer 2 update and primary and secondary cell condition update parameters, the secondary base station needs to indicate to the primary base station through the Xn/X2 interface that it has been configured for layer 1 or layer 2 update. Parameters updated by layer 1 or layer 2, or parameters indicating that the primary and secondary cells are not configured to be conditionally updated.

In a specific implementation, after obtaining the relevant configuration of the (candidate) target primary and secondary cells, the terminal device performs measurements on the target primary and secondary cells. That is, after the terminal device obtains the cell identifier of the (candidate) target primary and secondary cells and the configuration parameters of the reference signal, it measures the (candidate) target primary and secondary cells and reports the measured (candidate) values to the current primary and secondary cells. Information such as channel quality of the target primary and secondary cells.

In step 402, the terminal device reports the channel state information of the target primary and secondary cells to the secondary base station.

In the specific implementation, the terminal equipment will also report the channel status information of the current primary and secondary cells (that is, the serving primary and secondary cells). After the current primary and secondary cells receive the channel status information reported by the terminal equipment, they will make a decision whether to execute Layer 1 or Layer 1. 2 updated.

If at a certain moment the secondary base station finds that the terminal device reports that the L1RSRP of the target primary and secondary cell is higher than the L1RSRP of the current primary and secondary cell, step 403 is executed.

In step 403, the secondary base station sends a layer 1 or layer 2 update command to the terminal device.

In step 404, the terminal device performs update to the target primary and secondary cells.

Specifically, when the terminal device accesses the target primary and secondary cells, the terminal device may need to initiate a random access procedure to access the target primary and secondary cells. If the terminal device has obtained the uplink advance of the target primary and secondary cells, it does not need to initiate a random access procedure. After the target primary and secondary cells confirm the access of the terminal equipment, they become the new primary and secondary cells of the terminal equipment.

In step 405, the target network device sends an update configuration message to the master base station. The update configuration message is used to indicate that the terminal device is not configured with parameters for layer 1 or layer 2 update.

Specifically, the target network device is the network device to which the target primary and secondary cells belong. target network By sending an update configuration message to the main base station, the network device can enable the main base station to initiate the main and secondary cell condition update process when appropriate.

Scenario 3: The terminal device simultaneously receives the layer 1 or layer 2 update command for the target primary and secondary cells and the primary and secondary cell update command or the update (handover) command of the primary cell from the primary base station.

In the embodiment of the present invention, the terminal device executes the primary and secondary cell update command or the primary cell update command. This is because the mobility of the terminal equipment is mainly controlled by the primary base station. The commands sent by the primary base station are superior to the layer 1 or layer 2 update commands sent by the secondary base station. Therefore, the terminal equipment preferentially executes the primary and secondary cell update commands or the update commands of the primary cell. "Simultaneously" here does not mean complete synchronization in time, but means that after the terminal device receives the layer 1 or layer 2 update command for the target primary and secondary cells, but before accessing the target primary and secondary cells, if it receives the The terminal device executes the primary and secondary cell update command or the primary cell update (handover) command.

For more specific implementation methods of the embodiments of this application, please refer to the foregoing embodiments, which will not be described again here.

Please refer to Figure 5. Figure 5 shows a cell update device 50 for a secondary cell group. The cell update device 50 may include:

The determination module 501 is used to determine whether each candidate primary and secondary cell meets the update execution condition after the terminal device is configured with the primary and secondary cell condition update;

The first update module 502 is configured to respond to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received layer 1 or layer 2 for the target primary and secondary cell. An update command is used to perform an update to the candidate primary and secondary cells or an update to the target primary and secondary cells.

In a specific implementation, the above-mentioned cell update device 50 may correspond to a chip with a cell update function in the terminal equipment, such as a system-on-a-chip (SOC), a baseband chip, etc.; or may correspond to a chip with a cell update function in the terminal equipment. A chip module with a cell update function; or a chip module corresponding to a chip with a data processing function, or a terminal equipment.

Please refer to Figure 6. Figure 6 shows a cell update device 60. The cell update device 60 may include:

Configuration module 601, used to configure primary and secondary cell condition updates for terminal equipment;

The second update module 602 is configured to send a layer 1 or layer 2 update command for the target primary and secondary cell for the terminal device when there is a candidate primary and secondary cell that meets the update execution conditions and the terminal device has not yet accessed the candidate primary and secondary cell. An update to the candidate primary and secondary cells or an update to the target primary and secondary cell is performed.

In a specific implementation, the above-mentioned cell update device 60 may correspond to a chip with a cell update function in the network equipment, such as a SOC, a baseband chip, etc.; or correspond to a chip module with a cell update function in the network equipment; or correspond to a chip with a cell update function. A chip module of a data processing function chip, or corresponding to a network device.

For other related descriptions of the cell update device 50 or the cell update device 60, reference may be made to the relevant descriptions in Figure 1 and will not be described again here.

Regarding the various modules/units included in each device and product described in the above embodiments, they may be software modules/units or hardware modules/units, or they may be partly software modules/units and partly hardware modules/units. . For example, for various devices and products applied to or integrated into a chip, each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program. The software program Running on the processor integrated inside the chip, the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into the chip module, each module/unit included in it can They are all implemented in the form of hardware such as circuits. Different modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components. Alternatively, at least some modules/units can be implemented in the form of software programs. The software program runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied or integrated into terminal equipment, Each module/unit it contains can be implemented in the form of hardware such as circuits. Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal device, or at least some of the modules/units. It can be implemented in the form of a software program, which runs on the processor integrated inside the terminal device, and the remaining (if any) modules/units can be implemented in hardware such as circuits.

An embodiment of the present application also discloses a storage medium. The storage medium is a computer-readable storage medium, and a computer program is stored thereon. When the computer program is run, the steps of the method shown in Figures 1 to 4 can be executed. The storage medium may include read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc. The storage medium may also include non-volatile memory (non-volatile) or non-transitory (non-transitory) memory, etc.

Please refer to FIG. 7 , an embodiment of the present application also provides a schematic diagram of the hardware structure of a communication device. The device includes a processor 701, a memory 702 and a transceiver 703.

The processor 701 can be a general central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more processors used to control the execution of the program of the present application. integrated circuit. The processor 701 may also include multiple CPUs, and the processor 701 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor here may refer to one or more devices, circuits, or processing cores for processing data (eg, computer program instructions).

Memory 702 may be ROM or other types of static storage devices that can store static information and instructions, RAM or other types of dynamic storage devices that can store information and instructions, or it may be electrically erasable programmable read-only memory. read-only memory (EEPROM), compactdisc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures that can be accessed by a computer. The examples do not impose any restrictions on this. The memory 702 may exist independently (in this case, the memory 702 may be located outside the device or within the device), or may be integrated with the processor 701 . Among them, the memory 702 may contain computer program code. The processor 701 is used to execute the computer program code stored in the memory 702, thereby implementing the method provided by the embodiment of the present application.

The processor 701, the memory 702 and the transceiver 703 are connected by a bus. Transceiver 703 is used to communicate with other devices or communication networks. Optionally, the transceiver 703 may include a transmitter and a receiver. The device used to implement the receiving function in the transceiver 703 can be regarded as a receiver, and the receiver is used to perform the receiving steps in the embodiment of the present application. The device used to implement the sending function in the transceiver 703 can be regarded as a transmitter, and the transmitter is used to perform the sending steps in the embodiment of the present application.

When the structural diagram shown in FIG. 7 is used to illustrate the structure of the terminal device involved in the above embodiment, the processor 701 is used to control and manage the actions of the terminal device. For example, the processor 701 is used to support the terminal device to execute the diagram. Steps 101 and 102 in 1, or steps 202, 204 and 205 in Figure 2, steps 301 and 302 in Figure 3, steps 402 and 404 in Figure 4, and/or in the embodiment of the present application Actions performed by the terminal device during other processes described. The processor 701 may communicate with other network entities through the transceiver 703, for example, with the network devices described above. The memory 702 is used to store program codes and data of the terminal device.

When the structural diagram shown in Figure 7 is used to illustrate the structure of the network device involved in the above embodiment, the processor 701 is used to control and manage the actions of the network device. For example, the processor 701 is used to support the network device to execute the diagram. Steps 201 and 203 in 2, or step 302 in Figure 3, step 401, step 403, step 404 and step 405 in Figure 4, and/or network devices in other processes described in the embodiments of this application The action performed. The processor 701 can communicate with other network entities through the transceiver 703, for example, with the above-mentioned terminal device. Memory 702 is used to store program codes and data for network devices.

The embodiment of this application defines the one-way communication link from the access network to the terminal device as a downlink. The data transmitted on the downlink is downlink data, and the transmission direction of downlink data is called the downlink direction; while the one-way communication link from the terminal device to the access network is the uplink, and the data transmitted on the uplink It is uplink data, and the transmission direction of uplink data is called the upstream direction.

It should be understood that the term "and/or" in this article is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist simultaneously. , there are three situations of B alone. In addition, the character "/" in this article indicates that the related objects are an "or" relationship.

“Multiple” appearing in the embodiments of this application refers to two or more than two.

The first, second, etc. descriptions appearing in the embodiments of the present application are only for illustration and to distinguish the description objects, and there is no order. They do not represent special limitations on the number of devices in the embodiments of the present application, and cannot constitute a limitation of the present application. Any limitations of the embodiments.

The "connection" appearing in the embodiments of this application refers to various connection methods such as direct connection or indirect connection to realize communication between devices, and the embodiments of this application do not limit this in any way.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented using software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission by wired or wireless means to another website site, computer, server or data center.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

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

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

In addition, each functional unit in various embodiments of the present application may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute some steps of the method described in various embodiments of this application.

Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

A cell update method for a secondary cell group, characterized in that it is used in terminal equipment, and the cell update method includes:

After the terminal device configures the primary and secondary cell condition update, determine whether each candidate primary and secondary cell meets the update execution condition;

In response to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update command for the target primary and secondary cell, executes updating to the candidate primary and secondary cell. Update of primary and secondary cells or update to the target primary and secondary cells.
The cell update method for a secondary cell group according to claim 1, wherein the performing the update to the candidate primary and secondary cells includes:

Receive update instruction information, the update instruction information being used to indicate that cell updates are performed preferentially according to the layer 1 or layer 2 update command or that cell updates are performed preferentially on the candidate primary and secondary cells;

Cell update is performed according to the update instruction information.
The cell update method for a secondary cell group according to claim 1, wherein the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes:

Perform cell update to the target primary and secondary cells.
The cell update method for a secondary cell group according to claim 1, wherein the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes:

When the conditional update configuration corresponding to the candidate primary and secondary cells comes from the primary base station, a cell update to the candidate primary and secondary cells is performed; otherwise, a cell update to the target primary and secondary cells is performed.
The cell update method for a secondary cell group according to claim 1, wherein the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes:

Determine whether the target primary and secondary cells are consistent with the candidate primary and secondary cells;

If the target primary and secondary cells are consistent with the candidate primary and secondary cells, the layer 1 or layer 2 update command is executed.
The cell update method for a secondary cell group according to claim 1, further comprising:

If the layer 1 or layer 2 update command for the target primary and secondary cell and the primary and secondary cell update command or the update command of the primary cell from the primary base station are simultaneously received, the primary and secondary cell update command or the update command of the primary cell is executed.
A cell update method for a secondary cell group, characterized in that it is used in a secondary base station, and the cell update method includes:

If the terminal device supports simultaneous configuration of layer 1 or layer 2 updates and condition updates, configure the primary and secondary cell condition updates for the terminal device;

Send a layer 1 or layer 2 update command for the target primary and secondary cells. The layer 1 or layer 2 update command is issued when there is a candidate primary and secondary cell that satisfies the update execution condition, and the terminal device has not yet accessed the candidate primary and secondary cells. The layer 1 or layer 2 update command is sent when the terminal device is a secondary cell, and the layer 1 or layer 2 update command is used for the terminal device to perform an update to the candidate primary and secondary cells or the target primary and secondary cells.
The cell update method for a secondary cell group according to claim 7, further comprising:

If the terminal device does not support simultaneous configuration of layer 1 or layer 2 update and conditional update, then the terminal device sends parameters configured for the layer 1 or layer 2 update or indication information to the main base station, and the indication is The information is used to indicate that the primary and secondary cell condition updates are not configured.
The cell update method for a secondary cell group according to claim 7, further comprising:

After the update is completed, an update configuration message is sent to the master base station, where the update configuration message is used to indicate that parameters for the layer 1 or layer 2 update are not configured.
A cell update device for a secondary cell group, characterized in that it is used in terminal equipment, and the cell update device includes:

A judgment module configured to judge whether each candidate primary and auxiliary cell satisfies the update execution condition after the terminal device is configured with a condition update of the main and auxiliary cells;

A first update module configured to respond to the existence of a candidate primary and secondary cell that satisfies the update execution condition, the terminal device has not yet accessed the candidate primary and secondary cell, and has received a layer 1 or layer 2 update for the target primary and secondary cell. Command to perform an update to the candidate primary and secondary cells or an update to the target primary and secondary cells.
A cell update device for a secondary cell group, characterized in that it is used in a secondary base station, and the cell update device includes:

Configuration module, used to configure primary and secondary cell condition updates for terminal equipment;

The second update module is configured to send a layer 1 or layer 2 update command for the target primary and secondary cells. The layer 1 or layer 2 update command is when there is a candidate primary and secondary cell that satisfies the update execution condition, and the terminal device The layer 1 or layer 2 update command is sent when the candidate primary and secondary cell has not yet been accessed. The layer 1 or layer 2 update command is used for the terminal device to perform an update to the candidate primary and secondary cell or an update to the target primary and secondary cell.
A computer-readable storage medium with a computer program stored thereon, characterized in that when the computer program is run by a processor, the cell update method for a secondary cell group according to any one of claims 1 to 9 is executed. step.
A terminal device includes a memory and a processor. The memory stores a computer program that can be run on the processor. It is characterized in that when the processor runs the computer program, it executes claims 1 to 6. Any one of the above is used for the secondary cell The steps of the group's cell update method.
A network device includes a memory and a processor. The memory stores a computer program that can be run on the processor. It is characterized in that when the processor runs the computer program, it executes claims 7 to 9. The steps of any one of the cell update methods for the secondary cell group.