CN117177320A - Cell updating method and device for secondary cell group and storage medium - Google Patents

Cell updating method and device for secondary cell group and storage medium Download PDF

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Publication number
CN117177320A
CN117177320A CN202210591005.0A CN202210591005A CN117177320A CN 117177320 A CN117177320 A CN 117177320A CN 202210591005 A CN202210591005 A CN 202210591005A CN 117177320 A CN117177320 A CN 117177320A
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China
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update
primary
cell
layer
secondary cell
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CN202210591005.0A
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Chinese (zh)
Inventor
邓云
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Priority to CN202210591005.0A priority Critical patent/CN117177320A/en
Priority to PCT/CN2023/096439 priority patent/WO2023227090A1/en
Publication of CN117177320A publication Critical patent/CN117177320A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application provides a cell updating method and device for a secondary cell group and a storage medium, wherein the cell updating method comprises the following steps: after the terminal equipment is configured with the primary and secondary cell condition update, judging whether each candidate primary and secondary cell meets the update execution condition; and in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells. The application provides a realization scheme for flexibly carrying out cell updating when a primary cell condition updating and a secondary cell condition updating exist and a layer 1 or layer 2 updating exist.

Description

Cell updating method and device for secondary cell group and storage medium
Technical Field
The present application relates to the field of communications technologies, and in particular, to a cell update method and apparatus for a secondary cell group, and a storage medium.
Background
In wireless communication, in order to meet mobility requirements of users, a network side may enable a terminal device to access a target cell from a source cell through Handover (Handover). And once the terminal equipment receives the switching command sent by the network side, accessing the target cell according to the target cell information contained in the switching command. The above-described handover is called a Legacy (Legacy) handover or a layer 3 handover. A conditional handoff (Conditional Handover) mechanism is introduced in wireless communications: the greatest difference between the handover procedure and the original handover procedure is that the handover command includes a handover condition (may also be referred to as a handover execution condition) determined by the terminal device, for example, whether the signal quality of the candidate target cell is higher than the signal quality of the serving cell by a predetermined offset, and after the terminal device receives the handover command, whether the handover execution condition is satisfied is determined. When the condition is met, the terminal equipment accesses the target cell by utilizing the configuration parameters of the candidate target cell contained in the switching command, synchronizes with the target cell, initiates a random access flow in the target cell, and realizes switching to the target cell after the switching completion command is sent; if the handover condition is not satisfied, the terminal device continues to maintain the radio resource control (Radio Resource Control, RRC) connection with the source base station. The source base station may configure a plurality of candidate target cells and corresponding handover execution conditions.
After the terminal device establishes the Multi-radio access technology dual connection (Multi-Radio Access Technology Dual Connectivity, MR-DC), the terminal device is configured with a primary cell group (Master Cell Group, MCG) and a secondary cell group (Secondary Cell Group, SCG), wherein the secondary cell group side contains at least a primary secondary cell (PSCell), optionally also a secondary cell (SCell). The secondary cell group side may also be configured with a conditional handover mechanism, referred to herein as a conditional update, i.e., primary secondary cell conditional update (Conditional PSCell Change, CPC). Currently, it is considered to introduce a new handover mode layer 1 or layer 2 update (L1/L2 based inter-cell mobility), which triggers the terminal device to perform handover from the source cell to the target cell by layer 1, i.e. the physical layer, or layer 2, e.g. the media access control (Medium Access Control, MAC) layer, signaling.
However, when the secondary cell group side introduces a layer 1 or layer 2 update, for example, a PSCell/SCell configures a layer 1 or layer 2 update for a terminal device, the network may also configure a primary and secondary cell condition update for the terminal device, for example, a primary base station of the terminal device configures a condition update for the terminal device. In this case, how the terminal device performs cell update is a technical problem to be solved.
Disclosure of Invention
The application provides a cell updating method and device for a secondary cell group, and provides an implementation scheme for flexibly carrying out cell updating when primary and secondary cell condition updating and layer 1 or layer 2 updating exist.
In order to achieve the above purpose, the present 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 including: after the terminal equipment is configured with the primary and secondary cell condition update, judging whether each candidate primary and secondary cell meets the update execution condition; and in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells.
Optionally, performing the update to the candidate primary and secondary cells includes: receiving update indication information, wherein the update indication information is used for indicating that cell update is preferentially executed according to the layer 1 or layer 2 update command or cell update is preferentially executed to the candidate primary and secondary cells; and executing the cell update according to the update indication information.
Optionally, the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes: and performing cell update to the target primary and secondary cells.
Optionally, the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes: and when the configuration of the conditional update corresponding to the candidate primary and secondary cells comes from a main base station, executing the cell update to the candidate primary and secondary cells, otherwise, executing the cell update to the target primary and secondary cells.
Optionally, the performing the cell update to the candidate primary and secondary cells or the cell update to the target primary and secondary cells includes: judging whether the target primary and secondary cells are consistent with the candidate primary and secondary cells or not; and if the target primary and secondary cells are consistent with the candidate primary and secondary cells, executing the layer 1 or layer 2 update command.
Optionally, the cell update method further includes: and if the layer 1 or layer 2 updating command for the target primary and secondary cells and the primary and secondary cell updating command or the updating command of the primary cell from the primary base station are received at the same time, executing the primary and secondary cell updating command or the updating command of the primary cell.
In a second aspect, the present application also provides a cell update method for a secondary cell group, where the cell update method is used in a secondary base station, and the cell update method includes: if the terminal equipment supports the simultaneous configuration of the layer 1 or layer 2 update and the condition update, configuring the primary and secondary cell condition update for the terminal equipment; and sending a layer 1 or layer 2 update command for a target primary and secondary cell, wherein the layer 1 or layer 2 update command is sent when a candidate primary and secondary cell exists and meets the update execution condition, and the terminal equipment is not accessed to the candidate primary and secondary cell, and the layer 1 or layer 2 update command is used for the terminal equipment to execute the update to the candidate primary and secondary cell or the update to the target primary and secondary cell.
Optionally, the cell update method further includes: and if the terminal equipment does not support the simultaneous configuration of the layer 1 or the layer 2 update and the condition update, sending parameters configured for the layer 1 or the layer 2 update by the terminal equipment or sending indication information to a main base station, wherein the indication information is used for indicating that the condition update of the main and auxiliary cells is not configured.
Optionally, the cell update method further includes: 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.
In a third aspect, there is provided a cell update apparatus, the apparatus comprising: the judging module is used for judging whether each candidate primary and secondary cell meets the update execution condition after the terminal equipment is configured with the primary and secondary cell condition update; and the first updating module is used for responding to the existence of the candidate primary and secondary cells to meet the updating execution conditions, the terminal equipment is not accessed to the candidate primary and secondary cells yet, and receives a layer 1 or layer 2 updating command aiming at a target primary and secondary cell, and executes updating to the candidate primary and secondary cells or updating to the target primary and secondary cells.
In a fourth aspect, there is provided a cell update apparatus, the apparatus comprising: the configuration module is used for configuring primary and secondary cell condition update for the terminal equipment; and the second updating module is used for sending a layer 1 or layer 2 updating command aiming at a target primary and secondary cell, wherein the layer 1 or layer 2 updating command is sent when a candidate primary and secondary cell exists and meets the updating execution condition, and the terminal equipment is not accessed to the candidate primary and secondary cell, and the layer 1 or layer 2 updating command is used for enabling the terminal equipment to execute updating to the candidate primary and secondary cell or updating to the target primary and secondary cell.
In a fifth aspect, there is provided a computer readable storage medium having stored thereon a computer program for execution by a processor to perform any one of the methods provided in the first or second aspects.
In a sixth aspect, there is provided a communications apparatus comprising a memory having stored thereon a computer program executable on the processor, and a processor executing the computer program to perform any one of the methods provided in the first aspect.
In a seventh aspect, there is provided a communications apparatus comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterised in that the processor is operative to execute the computer program to perform any one of the methods provided in the second aspect.
In an eighth aspect, there is provided a computer program product having a computer program stored thereon, the computer program being executable by a processor to perform any one of the methods provided in the first or second aspects.
A ninth aspect provides a communication system comprising the above terminal device and the above network device.
Compared with the prior art, the technical scheme of the embodiment of the application has the following beneficial effects:
in the technical scheme of the application, after the terminal equipment configures the condition update of the primary and secondary cells, the terminal equipment can judge whether each candidate primary and secondary cell meets the update execution condition. And in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells. Under the condition that the terminal equipment supports two cell updating modes, namely, both the primary and secondary cell condition updating and the layer 1 or layer 2 updating, and the two cell updating modes can be executed, the terminal equipment can select one of the cell updating modes to carry out the cell updating according to own requirements or network instructions because different cell updating modes can meet different requirements, so that the flexibility of the cell updating is realized.
Further, judging 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 performed. When the target primary and secondary cells are consistent with the candidate primary and secondary cells, the cell update is performed by adopting the layer 1 or layer 2 update mode, and the user plane time delay in the cell update process can be obviously reduced by adopting the mode, so that the requirement of a terminal device side on high time delay is met, and the user experience is improved.
Drawings
Fig. 1 is a flowchart of a cell update method for a secondary cell group according to an embodiment of the present application;
fig. 2 is an interactive flowchart of a cell update method for a secondary cell group according to an embodiment of the present application;
fig. 3 is an interactive flowchart of another cell update method for a secondary cell group according to an embodiment of the present application;
fig. 4 is an interactive flowchart of yet another cell update method for a secondary cell group provided by an embodiment of the present application;
fig. 5 is a schematic structural diagram of a cell update apparatus for a secondary cell group according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a cell update apparatus for another secondary cell group according to an embodiment of the present application;
Fig. 7 is a schematic hardware structure of a cell update apparatus for a secondary cell group according to an embodiment of the present application.
Detailed Description
Communication systems to which embodiments of the present application are applicable include, but are not limited to, long term evolution (long term evolution, LTE) systems, fifth generation (5G) systems, NR systems, and future evolution systems or multiple communication convergence systems. The 5G system may be a non-independent Networking (NSA) 5G system or an independent networking (SA) 5G system. The technical scheme of the application is also suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-evaluation architecture and the like.
The present application relates generally to communication between a terminal device and a network device. Wherein:
the network device in the embodiment of the present application may also be referred to as an access network device, for example, may be a Base Station (BS) (also referred to as a base station device), where the network device is a device deployed in a radio access network (Radio Access Network, RAN) to provide a wireless communication function. For example, the device for providing base station functionality in the second generation (2 nd-generation, 2G) network comprises a base radio transceiver station (base transceiver station, BTS), the device for providing base station functionality in the third generation (3 rd-generation, 3G) network comprises a node B (NodeB), the device for providing base station functionality in the fourth generation (4 th-generation, 4G) network comprises an evolved node B (eNB), the device for providing base station functionality in the wireless local area network (wireless local area networks, WLAN) is an Access Point (AP), the next generation base station node (next generation node base station, gNB) in the NR is an Access Point (AP), and the node B (ng-eNB) continues to evolve, wherein the communication between the gNB and the terminal device is performed using NR technology, and the communication between the ng-eNB and the terminal device is performed using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, both the gNB and the ng-eNB may be connected to the 5G core network. The network device in the embodiment of the present application further includes a device for providing a base station function in a new communication system in the future, and the like.
The terminal device (terminal equipment) in embodiments of the present application may refer to various forms of access terminals, subscriber units, subscriber stations, mobile Stations (MSs), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents, or user equipment. The terminal device may also be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., as embodiments of the present application are not limited in this regard. The terminal device may also be referred to as a User Equipment (ue), a terminal, etc.
As described in the background art, after the secondary cell group side introduces the layer 1 or layer 2 update, for example, the PSCell/SCell configures the 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 primary base station of the terminal device configures the condition update for the terminal device. In this case, how the terminal device performs cell update is a technical problem to be solved.
In the technical scheme of the application, after the terminal equipment configures the condition update of the primary and secondary cells, the terminal equipment can judge whether each candidate primary and secondary cell meets the update execution condition. And in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells. Under the condition that the terminal equipment supports two cell updating modes, namely, both the primary and secondary cell condition updating and the layer 1 or layer 2 updating, and the two cell updating modes can be executed, the terminal equipment can select one of the cell updating modes to carry out the cell updating according to own requirements or network instructions because different cell updating modes can meet different requirements, so that the flexibility of the cell updating is realized.
Referring to fig. 1, the method provided by the application comprises the following steps:
step 101: after the terminal equipment configures the primary and secondary cell condition update, the terminal equipment judges whether each candidate primary and secondary cell meets the update execution condition.
Specifically, the number of candidate primary and secondary cells may be one or more.
Step 102: and in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells.
In step 102, the terminal device has not been accessed to the candidate primary and secondary cells, or the terminal device has not sent signaling containing candidate primary and secondary cell information satisfying the update execution condition to the primary base station.
It should be noted that the serial numbers of the steps in the present embodiment do not represent a limitation on the execution sequence of the steps.
It will be appreciated that in a specific implementation, the cell update method may be implemented in a software program running on a processor integrated within a chip or a chip module. The method may also be implemented by combining software with hardware, and the application is not limited.
Layer 1 or layer 2 updates may also be referred to as layer 1 or layer 2 mobility (L1/L2 inter-cell mobility), or any other implementable name, as the present application is not limited in this respect.
The cell update method in the embodiment of the application is used in the secondary cell group, that is, the cell update in the embodiment of the application refers to the update of the primary and secondary cells.
In the embodiment of the invention, the primary and secondary cell condition update of the terminal equipment can be configured by a primary base station or a secondary base station. The terminal device may receive the primary and secondary cell condition update configurations from the primary base station, may also receive the primary and secondary cell condition update configurations from the secondary base station, and may also receive the primary and secondary cell condition update configurations from both the primary base station and the secondary base station. Different primary and secondary cell condition update configurations may be associated with different candidate primary and secondary cells or with the same candidate primary and secondary cell.
In the embodiment of the invention, under the condition that the terminal equipment supports two cell updating modes, namely, the primary and secondary cell condition updating and the layer 1 or layer 2 updating are supported simultaneously, and the two cell updating modes can be executed, as different cell updating modes can meet different requirements, the terminal equipment can select one of the cell updating modes to carry out cell updating according to own requirements or network instructions, thereby realizing the flexibility of cell updating.
In specific implementation, the terminal device accesses the primary cell PCell, establishes an RRC connection, and establishes a data radio bearer start service. The service cell configures measurement for the terminal equipment so that the terminal equipment can measure the neighbor cell and the service cell and report the measurement report. The primary cell PCell may make handover decisions based on measurement reports and other factors such as cell load, etc. The primary cell PCell configures dual connection, namely configures a secondary cell group for the terminal device based on the service requirement and the measurement report of the terminal device, wherein the secondary cell group side at least comprises a primary secondary cell PScell, and optionally comprises one or more secondary cell SCells. The terminal device needs to consider the update (PSCell Change) of the primary and secondary cells because of its movement.
The primary and secondary cells PSCell configure parameters for layer 1 or layer 2 update flow for the terminal device, the primary and secondary cells PSCell select a target primary and secondary Cell1, and the target primary and secondary Cell1 and the current primary and secondary cells PSCell may belong to the same secondary base station or may belong to different secondary base stations with the current PSCell. After negotiating with the target primary and secondary Cell1, configuring configuration parameters of the target primary and secondary Cell1 needing to be detected and channel state information related to the target primary and secondary Cell1 by the terminal equipment for the terminal equipment, for example, the terminal equipment needs to detect layer 1 reference signal receiving power (Reference Signal Receiving Power, RSRP) of the target primary and secondary Cell1, and reporting L1RSRP to the current primary and secondary Cell PSCell. The terminal device continues to stay connected with the current PSCell until it does not receive a layer 1 or layer 2 primary and secondary cell update command.
The following describes two scenarios of simultaneously configuring the layer 1 or layer 2 update and the primary and secondary cell condition update, and not simultaneously supporting the layer 1 or layer 2 update and the primary and secondary cell condition update with the terminal device.
Scene 1, terminal equipment supports configuration of parameters of layer 1 or layer 2 update and primary and secondary cell condition update simultaneously. That is, the terminal device configures parameters for the layer 1 or layer 2 update procedure and configures parameters for the condition update of the candidate primary and secondary cells, where the parameters for the condition update of the candidate primary and secondary cells include radio parameters configured for the terminal device by the candidate primary and secondary cells and conditions for performing the condition update.
Referring also to fig. 2, in step 201, the serving network apparatus transmits configuration information of a target primary and secondary cell to the terminal apparatus.
In this embodiment, after obtaining the configuration information of the (candidate) target primary and secondary Cell1, that is, after obtaining the configuration parameters for the layer 1 or layer 2 update procedure, the network device may further configure the primary and secondary Cell condition update for the terminal device. Note that, at this time, cell1 cannot be called a target primary and secondary Cell yet, and before the network side does not send a command for updating a layer 1 or layer 2 primary and secondary Cell, cell1 is a candidate target primary and secondary Cell; when the terminal equipment receives a command of updating a primary and secondary Cell of a layer 1 or a layer 2, and needs to be updated to the Cell1, the Cell1 is the target primary and secondary Cell of the terminal equipment.
Specifically, after receiving the configuration parameters for the layer 1 or layer 2 update procedure, the terminal device reports the channel state information related to the target primary and secondary Cell 1.
In step 202, the terminal device evaluates whether each candidate primary and secondary cell satisfies the update execution condition.
In specific implementation, after receiving the update configuration of the primary and secondary cell conditions, the terminal device starts to evaluate 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.
And once the candidate primary and secondary cells meet the update execution conditions, the terminal equipment starts to execute the primary and secondary cell condition update flow and starts to access the candidate primary and secondary cells meeting the conditions.
In step 203, the serving network apparatus transmits a layer 1 or layer 2 update command to the terminal apparatus.
In a specific implementation, after the terminal device starts to evaluate the candidate primary and secondary cells for a period of time, the terminal device discovers that one candidate primary and secondary cell meets the update execution condition. Before the terminal equipment has not been accessed into the candidate primary and secondary cells or before the terminal equipment has reported the candidate primary and secondary cell information meeting the update execution conditions to the primary base station, the terminal equipment also receives a 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 may perform step 205.
In step 204, the terminal device performs an update to the candidate primary and secondary cells.
In this embodiment, the terminal device performs the primary and secondary cell condition update, and the terminal device preferentially performs the primary and secondary cell condition update in consideration of the evaluation of the primary and secondary cell update condition, which is to examine the signal quality of the candidate primary and secondary cells after the layer 3 smoothing filtering in a period of time, which is more stable than the change of the channel quality of the layer 1 or the layer 2 updating only considering the layer 1. It is also considered that after configuring the layer 1 or layer 2 update, the secondary base station will not normally reconfigure the primary and secondary cell condition update (SN-initiated CPC) initiated by the secondary base station, but the primary base station may configure the primary and secondary cell condition update (MN-initiated CPC) initiated by the primary base station for the terminal device based on its own judgment, where the primary and secondary cell condition update configuration originates from the primary base station, and the terminal device performs the primary and secondary cell condition update corresponding to receiving the instruction sent by the primary base station. For the terminal device, it preferably executes instructions from the master base station.
In step 205, the terminal device performs an update to the target primary and secondary cells.
In this embodiment, the terminal device executes the layer 1 or layer 2 update command. Considering that the network device can timely reference more information, such as load information among cells, in configuring the target primary and secondary cells, the performance of the target primary and secondary cells is better, so that the terminal device can execute a layer 1 or layer 2 update command. Executing the layer 1 or layer 2 update command helps to reduce the service plane interruption delay of the terminal device during the moving process, because the random access procedure may not be needed at any time to execute the layer 1 or layer 2 update command, and the access efficiency is higher. In a high-delay service scene, the terminal equipment executes a layer 1 or layer 2 update command to update the cell, so that the service requirement can be better met.
In another non-limiting embodiment of the present invention, please refer to fig. 3. Unlike the previous embodiment, in step 301, the terminal device determines whether the target primary and secondary cells (i.e., the primary and secondary cells indicated in the layer 1 or layer 2 update command) are consistent with the candidate primary and secondary cells. And judging whether the target primary and secondary cells and the candidate primary and secondary cells are the same cell or not.
In step 302, the terminal device executes a layer 1 or layer 2 update command when the target primary and secondary cells coincide with the candidate primary and secondary cells.
In the embodiment of the invention, the terminal equipment executes the layer 1 or layer 2 update command to help reduce the service surface interruption time delay of the terminal equipment in the moving process.
Of course, if the target primary and secondary cells are inconsistent with the candidate primary and secondary cells, the terminal device may autonomously decide which mode to update the cells, e.g., the terminal device may perform step 204 or may perform step 205.
In another embodiment of the present invention, before the terminal device performs the update of the primary and secondary cells, update indication information may be received from a network side, such as a primary base station or a secondary base station, where the update indication information is used to indicate that the primary and secondary cell update is preferentially performed according to a layer 1 or layer 2 update command or that the cell update is preferentially performed to a candidate primary and secondary cell; the terminal device performs cell update according to the update instruction information. If the update indication information is used to indicate that the primary and secondary cell update is to be performed preferentially according to the layer 1 or layer 2 update command, step S205 is performed after step S203 described above.
Scene 2, terminal device does not support configuring parameters for layer 1 or layer 2 update and primary and secondary cell condition update parameters at the same time.
The parameter which is not supported to be configured for the layer 1 or the layer 2 update and the primary and secondary cell condition update parameter in the embodiment of the present invention may be that the terminal device does not support to be configured for the layer 1 or the layer 2 update and the primary and secondary cell condition update parameter, or the secondary base station does not support to be configured for the terminal device to be configured for the layer 1 or the layer 2 update and the primary and secondary cell condition update parameter, or neither the secondary base station nor the terminal device support to be configured for the layer 1 or the layer 2 update parameter and the primary and secondary cell condition update parameter.
In step 401, the secondary base station transmits parameters or transmission indication information that the terminal device has configured for layer 1 or layer 2 update to the primary base station. The indication information is used for indicating that the condition update of the primary and secondary cells is not configured.
In this embodiment, when the secondary base station or the terminal device does not support configuration of the parameters for layer 1 or layer 2 update and the primary and secondary cell condition update parameters at the same time, the secondary base station needs to indicate to the primary base station via the Xn/X2 interface that the parameters for layer 1 or layer 2 update have been configured, or indicate that the primary and secondary cell condition update parameters are not configured.
In a specific implementation, the terminal device measures the target primary and secondary cells after obtaining the relevant configuration of the (candidate) target primary and secondary cells. After obtaining the cell identification of the (candidate) target primary and secondary cells and the configuration parameters of the reference signals, the terminal equipment measures the (candidate) target primary and secondary cells and reports the measured information such as the channel quality of the (candidate) target primary and secondary cells to the current primary and secondary cells.
In step 402, the terminal device reports channel state information of the target primary and secondary cells to the secondary base station.
In a specific implementation, the terminal device also reports the channel state information of the current primary and secondary cells (i.e. the serving primary and secondary cells), and after the current primary and secondary cells receive the channel state information reported by the terminal device, a decision is made as to whether to execute layer 1 or layer 2 update.
If the secondary base station discovers that the L1 RSRP of the target primary and secondary cells reported by the terminal equipment is higher than the L1 RSRP of the current primary and secondary cells at a certain moment, 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 an update to the target primary and secondary cell.
Specifically, 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, and if the terminal device has acquired the uplink advance of the target primary and secondary cells, the terminal device may not need to initiate the random access procedure. After the target primary and secondary cells confirm the access of the terminal equipment, the target primary and secondary cells become 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 a network device to which the target primary and secondary cells belong. The target network device sends the update configuration message to the main base station, so that the main base station can initiate a main and auxiliary cell condition update flow when appropriate.
Scene 3, the terminal device receives a layer 1 or layer 2 update command for the target primary and secondary cells at the same time, and a primary and secondary cell update command or a primary cell update (handover) command from the primary base station.
In the embodiment of the application, the terminal equipment executes the update command of the primary and secondary cells or the update command of the primary cell. This is because the mobility of the terminal device is mainly controlled by the master base station, and the command transmitted by the master base station is superior to the layer 1 or layer 2 update command transmitted by the slave base station, so that the terminal device preferentially performs the master-slave cell update command or the update command of the master cell. The term "simultaneously" does not mean complete synchronization in time, but means that after the terminal device receives a layer 1 or layer 2 update command for a target primary and secondary cell, if a primary and secondary cell update command or a primary cell update (handover) command from a base station is received before the terminal device accesses the target primary and secondary cell, the terminal device executes the primary and secondary cell update command or the primary cell update command.
For more specific implementation manners of the embodiments of the present application, please refer to the foregoing embodiments, and the details are not repeated here.
Referring to fig. 5, fig. 5 shows a cell update apparatus 50 for a secondary cell group, where the cell update apparatus 50 may include:
a judging module 501, configured to judge whether each candidate primary and secondary cell satisfies an update execution condition after the terminal device configures a primary and secondary cell condition update;
A first update module 502, configured to, in response to the existence of a candidate primary and secondary cell satisfying the update execution condition, perform an update to the candidate primary and secondary cell or an update to the target primary and secondary cell by receiving a layer 1 or layer 2 update command for the target primary and secondary cell while the terminal device has not yet accessed the candidate primary and secondary cell.
In a specific implementation, the cell update apparatus 50 may correspond to a Chip with a cell update function in a terminal device, for example, a System-On-a-Chip (SOC), a baseband Chip, etc.; or the terminal equipment comprises a chip module with a cell updating function; or corresponds to a chip module having a chip with a data processing function or corresponds to a terminal device.
Referring to fig. 6, fig. 6 shows a cell update apparatus 60, where the cell update apparatus 60 may include:
a configuration module 601, configured to configure a primary and secondary cell condition update for a terminal device;
and the second updating module 602 is configured to send a layer 1 or layer 2 update command for the target primary and secondary cell when the candidate primary and secondary cell exists and the terminal device has not yet accessed the candidate primary and secondary cell, so that the terminal device performs an update to the candidate primary and secondary cell or an update to the target primary and secondary cell.
In a specific implementation, the cell update apparatus 60 may correspond to a chip with a cell update function in a network device, for example, an SOC, a baseband chip, etc.; or the network equipment comprises a chip module with a cell updating function; or corresponds to a chip module having a chip with a data processing function or corresponds to a network device.
Other relevant descriptions of the cell update apparatus 50 or the cell update apparatus 60 may refer to the relevant descriptions in fig. 1, and will not be repeated here.
With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal device, each module/unit included in the device may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal device, or at least some modules/units may be implemented in a software program, where the software program runs on a processor integrated within the terminal device, and the remaining (if any) part of the modules/units may be implemented in hardware such as a circuit.
The embodiment of the application also discloses a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program can execute the steps of the methods shown in fig. 1 to 4 when running. The storage medium may include Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic or optical disks, and the like. The storage medium may also include non-volatile memory (non-volatile) or non-transitory memory (non-transitory) or the like.
Referring to fig. 7, the embodiment of the application further provides a hardware structure schematic diagram of the communication device. The apparatus comprises a processor 701, a memory 702 and a transceiver 703.
The processor 701 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. 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 herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).
The memory 702 may be a ROM or other type of static storage device, a RAM or other type of dynamic storage device that can store static information and instructions, or that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, 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 and that can be accessed by a computer, as embodiments of the application are not limited in this regard. The memory 702 may be provided separately (in this case, the memory 702 may be located outside the apparatus or inside the apparatus), or may be integrated with the processor 701. Wherein the memory 702 may contain computer program code. The processor 701 is configured to execute 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. The transceiver 703 is used to communicate with other devices or communication networks. Alternatively, the transceiver 703 may include a transmitter and a receiver. The means in the transceiver 703 for implementing the receiving function may be regarded as a receiver for performing the steps of receiving in an embodiment of the application. The means for implementing the transmitting function in the transceiver 703 may be regarded as a transmitter for performing the steps of transmitting in the embodiments of the present application.
While the schematic structural diagram shown in fig. 7 is used to illustrate the structure of the terminal device according to 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 perform steps 101 and 102 in fig. 1, or steps 202, 204 and 205 in fig. 2, steps 301 and 302 in fig. 3, steps 402 and 404 in fig. 4, and/or actions performed by the terminal device in other processes described in the embodiments of the present application. The processor 701 may communicate with other network entities, such as with the network devices described above, via the transceiver 703. The memory 702 is used for storing program codes and data of the terminal device.
While the schematic diagram shown in fig. 7 is used to illustrate the structure of the network device according to the above embodiment, the processor 701 is configured to control and manage the actions of the network device, for example, the processor 701 is configured to support the network device to perform the steps 201 and 203 in fig. 2, or the steps 302 in fig. 3, the steps 401, 403, 404, and 405 in fig. 4, and/or the actions performed by the network device in other processes described in the embodiments of the present application. The processor 701 may communicate with other network entities, such as with the terminal devices described above, via the transceiver 703. Memory 702 is used to store program codes and data for the network devices.
The embodiment of the application defines a unidirectional communication link from an access network to terminal equipment as a downlink, wherein data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal equipment to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called as uplink direction.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.
The term "plurality" as used in the embodiments of the present application means two or more.
The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.
The "connection" in the embodiment of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in the embodiment of the present application.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in 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 comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present application.
Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the application, and the scope of the application should be assessed accordingly to that of the appended claims.

Claims (14)

1. A cell update method for a secondary cell group, for use in a terminal device, the cell update method comprising:
after the terminal equipment is configured with the primary and secondary cell condition update, judging whether each candidate primary and secondary cell meets the update execution condition;
and in response to the existence of the candidate primary and secondary cells meeting the update execution conditions, the terminal equipment does not access the candidate primary and secondary cells yet, receives a layer 1 or layer 2 update command for a target primary and secondary cell, and executes the update to the candidate primary and secondary cells or the update to the target primary and secondary cells.
2. 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 comprises:
receiving update indication information, wherein the update indication information is used for indicating that cell update is preferentially executed according to the layer 1 or layer 2 update command or cell update is preferentially executed to the candidate primary and secondary cells;
and executing the cell update according to the update indication information.
3. The cell update method for a secondary cell group according to claim 1, wherein the performing a cell update to the candidate primary and secondary cells or to the target primary and secondary cells comprises:
and performing cell update to the target primary and secondary cells.
4. The cell update method for a secondary cell group according to claim 1, wherein the performing a cell update to the candidate primary and secondary cells or to the target primary and secondary cells comprises:
and when the configuration of the conditional update corresponding to the candidate primary and secondary cells comes from a main base station, executing the cell update to the candidate primary and secondary cells, otherwise, executing the cell update to the target primary and secondary cells.
5. The cell update method for a secondary cell group according to claim 1, wherein the performing a cell update to the candidate primary and secondary cells or to the target primary and secondary cells comprises:
judging whether the target primary and secondary cells are consistent with the candidate primary and secondary cells or not;
and if the target primary and secondary cells are consistent with the candidate primary and secondary cells, executing the layer 1 or layer 2 update command.
6. The cell update method for a secondary cell group according to claim 1, further comprising:
and if the layer 1 or layer 2 updating command for the target primary and secondary cells and the primary and secondary cell updating command or the updating command of the primary cell from the primary base station are received at the same time, executing the primary and secondary cell updating command or the updating command of the primary cell.
7. A cell update method for a secondary cell group, for use in a secondary base station, the cell update method comprising:
if the terminal equipment supports the simultaneous configuration of the layer 1 or layer 2 update and the condition update, configuring the primary and secondary cell condition update for the terminal equipment;
and sending a layer 1 or layer 2 update command for a target primary and secondary cell, wherein the layer 1 or layer 2 update command is sent when a candidate primary and secondary cell exists and meets the update execution condition, and the terminal equipment is not accessed to the candidate primary and secondary cell, and the layer 1 or layer 2 update command is used for the terminal equipment to execute the update to the candidate primary and secondary cell or the update to the target primary and secondary cell.
8. The cell update method for a secondary cell group according to claim 7, further comprising:
and if the terminal equipment does not support the simultaneous configuration of the layer 1 or the layer 2 update and the condition update, sending parameters configured for the layer 1 or the layer 2 update by the terminal equipment or sending indication information to a main base station, wherein the indication information is used for indicating that the condition update of the main and auxiliary cells is not configured.
9. 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.
10. A cell update apparatus for a secondary cell group, for use in a terminal device, the cell update apparatus comprising:
the judging module is used for judging whether each candidate primary and secondary cell meets the update execution condition after the terminal equipment is configured with the primary and secondary cell condition update;
and the first updating module is used for responding to the existence of the candidate primary and secondary cells to meet the updating execution conditions, the terminal equipment is not accessed to the candidate primary and secondary cells yet, and receives a layer 1 or layer 2 updating command aiming at a target primary and secondary cell, and executes updating to the candidate primary and secondary cells or updating to the target primary and secondary cells.
11. A cell update apparatus for a secondary cell group, for use in a secondary base station, the cell update apparatus comprising:
the configuration module is used for configuring primary and secondary cell condition update for the terminal equipment;
and the second updating module is used for sending a layer 1 or layer 2 updating command aiming at a target primary and secondary cell, wherein the layer 1 or layer 2 updating command is sent when a candidate primary and secondary cell exists and meets the updating execution condition, and the terminal equipment is not accessed to the candidate primary and secondary cell, and the layer 1 or layer 2 updating command is used for enabling the terminal equipment to execute updating to the candidate primary and secondary cell or updating to the target primary and secondary cell.
12. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, performs the steps of the cell update method for a secondary cell group of any of claims 1 to 9.
13. A terminal device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the cell update method for a secondary cell group of any of claims 1 to 6.
14. A network device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the cell update method for a secondary cell group of any of claims 7 to 9.
CN202210591005.0A 2022-05-27 2022-05-27 Cell updating method and device for secondary cell group and storage medium Pending CN117177320A (en)

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