CN110324872B - Method and apparatus for cell change - Google Patents
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- H—ELECTRICITY
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Abstract
The embodiment of the invention discloses a method and equipment for cell change, wherein the method comprises the following steps: and determining whether a target condition is met, and sending cell change indication information to the source node when the target condition is met, wherein the cell change indication information is used for the source node to determine whether the terminal equipment performs cell change after sending the cell change indication information. The method of the embodiment of the invention can avoid the problem of resource waste caused by reserving resources for the terminal equipment under the condition that the network equipment cannot know whether the terminal equipment carries out cell change.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and apparatus for cell change.
Background
During communication between a terminal device and a network device in a wireless communication system, due to mobility, a connected terminal device may move from a coverage area of one base station to a coverage area of another base station, and at this time, the terminal device needs to switch an original radio channel to a new radio channel, i.e., complete Handover (Handover).
In a Long Term Evolution (LTE) system, the handover failure is mainly caused by that the terminal device cannot receive a handover command issued by the source base station in time. In a New Radio (NR) system, cells are more densely deployed and the coverage of the cells is relatively small, which may result in more frequent handover of the terminal device. If the handover command issued by the source base station is not received in the coverage area of the terminal device moving to another base station, the handover will fail. Therefore, in NR, continuing to follow the handover method of the LTE system results in an increase in the probability of handover failure.
In order to alleviate the above problems, a Conditional Handover (Conditional Handover) manner is introduced in the fifth Generation mobile communication technology (5th-Generation, 5G), where when a terminal device receives a reconfiguration command, the terminal device does not immediately perform operations such as Conditional Handover, but performs cell change when a preset trigger condition is met, but a source node (source cell) cannot know in real time that the terminal device will leave a service range of the source cell, so that the source node still reserves resources for the terminal device, which causes resource waste.
Disclosure of Invention
The embodiments of the present invention provide a method and a device for cell change, which can avoid the problem of resource waste caused by the fact that a terminal device performs cell switching but a source node still reserves resources for the terminal device.
In a first aspect, a method for cell change is provided, the method comprising:
determining whether a target condition is satisfied;
and when the target condition is met, sending cell change indication information to the source node, wherein the cell change indication information is used for the source node to determine whether the terminal equipment performs cell change after sending the cell change indication information.
In a second aspect, a terminal device is provided, which includes:
a processing module for determining whether a target condition is satisfied;
and the receiving and sending module is used for sending cell change indication information to the source node when the processing module determines that the triggering condition is met, wherein the cell change indication information is used for the source node to determine whether the terminal equipment performs cell change after sending the cell change indication information.
In a third aspect, a terminal device is provided, comprising a processor, a memory and a computer program stored on the memory and being executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for cell change as described in the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for cell change as set forth in the first aspect.
In the embodiment of the invention, the terminal equipment sends the cell change indication information to the network equipment when the target condition is met, so that the network equipment knows whether the terminal equipment performs cell change after sending the cell change indication information, and the problem of resource waste caused by reserving resources for the terminal equipment under the condition that the network equipment cannot know whether the terminal equipment performs cell change can be avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow diagram for cell change according to one embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Fig. 3 is another schematic structural diagram of a terminal device according to an embodiment of the present invention.
Fig. 4 is a further configuration diagram of a terminal device according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA) System, Wideband Code Division Multiple Access (WCDMA) System, General Packet Radio Service (GPRS) System, Long Term Evolution (LTE)/enhanced Long Term Evolution (LTE-a) System, New Radio (NR) System, etc.
A Terminal device (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile User Equipment (UE), or the like, may communicate with one or more core networks via a Radio Access Network (RAN, for example), and the User device may be a Mobile Terminal, such as a Mobile phone (or a "cellular" phone) and a computer having a Mobile Terminal, such as a portable, pocket, handheld, computer-included, or vehicle-mounted Mobile device, which exchange language and/or data with the Radio Access Network.
The source Node and the target Node are devices deployed in a radio access network device to provide a radio communication function for a terminal device, and the source Node and the target Node may be Base stations, which may be Base Transceiver Stations (BTS) in GSM or CDMA, Base stations (NodeB) in WCDMA, evolved Node bs (eNB or e-NodeB) in LTE, and 5G Base stations (gNB).
It should be noted that, when the method in the embodiment of the present invention is applied to a single connection scenario, the source node and the target node are a source base station and a target base station, respectively. When the method in the embodiment of the invention is applied to a dual-connection scene, a source Node is a source Master Node (MN) or a source auxiliary Node (SN), and a target Node is a target auxiliary Node. The target cell referred to in the embodiments of the present invention refers to a cell under the target node.
It should be noted that the cell change in the embodiment of the present invention may be a plurality of single cell changes, or may be a plurality of cells (for example, a cell group) simultaneously changed. The method of the embodiment of the invention can be applied to any cell change process, such as a Handover (Handover) process, a secondary cell change process and a cell change process of a heterogeneous system. The Secondary Cell transformation process may include SN Change, Primary Secondary Cell (PSCell) transformation, Secondary Cell (Scell) transformation, and the like.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 illustrates a method for cell change according to one embodiment of the present application. As shown in fig. 1, the method comprises:
s110, determining whether the target condition is met.
Optionally, in some embodiments, the target condition comprises one of the following conditions: one trigger condition of the configured at least one trigger condition is satisfied; when the configured trigger conditions are multiple, all the multiple trigger conditions are satisfied; the configured at least one triggering condition is not met but the terminal equipment determines to execute the cell change command; and the configured at least one trigger condition is partially fulfilled and the terminal device determines to execute the cell change command. Here, the triggering condition and the cell change command may be issued to the terminal device by the source node through a Radio Resource Control (RRC) reconfiguration message. It can be understood that the source node acquires the trigger condition and the cell change command from the target node, and then forwards the trigger condition and the cell change command to the terminal device.
For example, the trigger conditions include one or more of the following conditions: the transmission delay of the data packet is higher than or equal to a first preset threshold value; the packet loss rate of the data packet is higher than or equal to a second preset threshold; the data transmission rate is higher than or equal to a third preset threshold value, and the Integrity Protection verification fails (Integrity Protection Check Failure); radio Link Failure (RLF); radio Resource Control (RRC) reconfiguration failure; the handover fails; and, a Secondary Cell Group (SCG) access failure. Here, the RRC reconfiguration failure may include a resource reconfiguration failure to (Master Cell Group, MCG), or include a resource reconfiguration failure to SCG, or include a resource reconfiguration failure to MCG and SCG. The SCG access failure may include a SCG Change (Change) failure, or a maximum uplink transmission time difference of the MCG and the SCG exceeding a limit.
And S120, when the target condition is determined to be met, sending cell change indication information to the source node, wherein the cell change indication information is used for the source node to determine whether the terminal equipment performs cell change after sending the cell change indication information.
Specifically, in some embodiments, the sending, by the terminal device, the cell change indication information to the source node includes: sending the cell change indication information to the source node S times, wherein S is a positive integer greater than or equal to 1; or, the cell change indication information is sent to the source node until receiving an Automatic Repeat-reQuest (ARQ) feedback from a Radio Link Control (RLC) layer entity of the source node for T times, where T is a positive integer greater than or equal to 1; or, the cell change indication information is sent to the source node until a Hybrid Automatic Repeat Request (HARQ) feedback sent by a Medium Access Control (MAC) layer entity from the source node is received for K times, where K is a positive integer greater than or equal to 1; or, the cell change indication information is sent to the source node until acknowledgement response information aiming at the cell change indication information is received from the source node.
For example, the value of M is 1, and the terminal device only sends the cell change indication information to the source node 1 time, i.e., One Shot transmission. Or, if S is a positive integer greater than 1, the terminal device sends the cell change instruction information to the source node multiple times, in this case, the terminal device may continuously send the cell change instruction information to the source node multiple times, or may send the cell change instruction information to the source node multiple times at preset time intervals. Or, after receiving the ARQ or HARQ feedback of the source node, the terminal device considers that the cell change indication information is successfully transmitted, and then does not continue to send the cell change indication information to the source node. Or, after receiving ARQ feedback of the source node T times, the terminal device considers that the transmission of the cell change indication information is successful, and then does not continue to send the cell change indication information to the source node, or, after receiving HARQ feedback of the source node K times, the terminal device considers that the transmission of the cell change indication information is successful, and then does not continue to send the cell change indication information to the source node, where K is a positive integer greater than 1, where the reception of ARQ feedback T times may be continuous T times or discontinuous T times. The number of the received HARQ feedback may be continuous K times or discontinuous K times. Or the source node needs to send response information for the cell change indication information to the terminal device after receiving the cell change indication information of the terminal device, and if the terminal device receives the acknowledgement response information sent by the source node, the terminal device considers that the cell change indication information is successfully sent and does not continue to send the cell change indication information to the source node.
Optionally, in some embodiments, the cell change indication information includes at least one of the following information: the terminal equipment determines the identification information of a cell change command to be executed; identification information of a trigger condition that is satisfied in the configured at least one trigger condition; a cell or cell list related to the cell change order determined to be executed by the terminal device; a measurement object related to the cell change instruction information; measurement configuration information related to the cell change indication information; the terminal equipment accesses the relevant information of the target cell; the corresponding relation between the relevant information of the target cell to be accessed by the terminal equipment; time indication information for indicating an opportunity to perform cell change; cell change capability of the terminal device; an operation to be performed; the terminal equipment determines a verification result of a cell change command to be executed; and capability change information of the terminal device.
For example, the identification information of the cell change command determined to be executed by the terminal device may be an index or an identification ID of the cell change command. The identification information of the satisfied trigger condition may be an index or an ID of the satisfied trigger condition. The cell or cell list related to the cell change order determined to be performed by the terminal device may be an ID of the cell or cell list. The identification information of the measurement configuration related to the cell change indication information may be an index or an ID of the measurement configuration.
Optionally, in some embodiments, the information about the target cell to be accessed by the terminal device includes at least one of the following information: the identification information of the target cell, the trigger condition corresponding to the target cell, the cell change command corresponding to the target cell, the measurement object corresponding to the target cell, and the measurement configuration corresponding to the target cell.
Optionally, in some embodiments, the correspondence between the relevant information of the target cell to be accessed by the terminal device includes a correspondence between the target cell, a trigger condition corresponding to the target cell, and a cell change command corresponding to the target cell. When there are multiple target cells, the correspondence between the relevant information of the target cells to which the terminal device is to access includes the correspondence between the cell group, the trigger condition (trigger component group) corresponding to the cell group, and the cell change command. The correspondence may be established by ID, by Bitmap, or by white list in the measurement object. The correspondence relationship here may be a one-to-one correspondence relationship, a one-to-many correspondence relationship, a many-to-many correspondence relationship, and a chain-type correspondence relationship.
Optionally, in further embodiments, the correspondence between the relevant information of the target cells (target cell List or target cell Group) to be accessed by the terminal device includes a correspondence between the target cells and the conditional configuration, or includes a correspondence between the measurement configuration and the measurement object, or includes a correspondence between the target cells (target cell List or target cell Group), the measurement object, the measurement configuration, and the cell change command. The correspondence relationship here may be a one-to-one correspondence relationship, a one-to-many correspondence relationship, a many-to-many correspondence relationship, and a chain-type correspondence relationship.
Optionally, in some embodiments, the time indication information indicates that the terminal device performs cell change at the time of transmitting the cell change indication information; or the time indication information indicates that the terminal equipment executes cell change after a preset time length is started at the moment of sending the cell change indication information; or, the time indication information indicates the terminal device to perform cell change when receiving an automatic repeat request ARQ feedback from a radio link layer control RLC layer entity of the source node for M times, where M is a positive integer greater than or equal to 1; or, the time indication information indicates the terminal device to perform cell change at the moment of receiving HARQ (hybrid automatic repeat request) feedback from the MAC layer entity of the source node for N times, wherein N is a positive integer greater than or equal to 1; or, the time indication information indicates the terminal device to perform cell change at the moment of receiving the acknowledgement response information from the source node for the cell change indication information; or, the information for indicating the time for performing the cell change indicates that the terminal device does not perform the cell change.
That is, the time indication information may indicate that the terminal device performs cell change immediately after the terminal device has sent the cell change indication information, or indicate that the terminal device performs cell change after a preset time length elapses after the terminal device has sent the cell change indication information, or indicate that the terminal device performs cell change after receiving ARQ feedback M times or receiving HARQ feedback N times, or indicate that the terminal device performs cell change at a time when acknowledgement Response (Response) information of the source node with respect to the cell change indication information is received, or indicate that the terminal device does not perform cell change. Here, the preset duration may be agreed by a protocol, and the preset duration may also be configured by the source node. M, N is a positive integer greater than or equal to 1, the value of M, N may be agreed upon in advance or configured by the source node.
Further, if the cell change indication information includes time indication information indicating that the terminal device does not perform cell change, the cell change indication information further includes resource indication information indicating resource configuration released by the terminal device.
Optionally, in some embodiments, the cell change capability of the terminal device comprises one of the following capabilities: cell change of Make Before Break (MBB), cell change of Random Access free Channel Less (RACH Less); and Dual Connectivity Handover (DC Handover). Here, the cell change capability of the terminal device may also be understood as a handover method that can be adopted when the terminal device performs cell handover.
Optionally, in some embodiments, the verification result of the cell change order may include both legitimate and illegitimate cases. For example, if the terminal device cannot recognize a cell change command or cannot execute the cell change command, the cell change command is considered to be illegal.
Optionally, in some embodiments, the operation to be performed comprises one of: performing a fully configured wireless reconfiguration procedure (Full Configuration); performing a partially fully configured wireless reconfiguration procedure (delta variable parameters are used for partial layer parameters and Full Configuration is used for partial layer reset); and performing a delta variable configured wireless reconfiguration procedure (without using Full Configuration).
On the basis of the foregoing embodiment, optionally, the method shown in fig. 1 further includes:
the terminal equipment disconnects the source node at the moment of sending the cell change indication information to the source node, and initiates an access process in the target cell; or after the preset time length passes at the moment of sending the cell change indication information to the source node, disconnecting the source node and initiating an access process in the target cell; or, after receiving the determined response information from the source node for the cell change indication information, disconnecting the source node and initiating an access process in the target cell; or, at the moment of receiving ARQ feedback from the RLC layer entity of the source node for T times, disconnecting the source node and initiating an access process in the target cell; or when receiving the real HARQ feedback from the MAC layer of the source node for K times, disconnecting the source node and initiating an access process in the target cell.
In other words, the terminal device may disconnect from the source node immediately after transmitting the cell change instruction information to the source node, and initiate access in the target cell. Or after the terminal device sends the cell change indication information to the source node, after a period of time (preset time), the terminal device disconnects the connection with the source node and initiates access in the target cell. Or after receiving the ARQ feedback of the source node for T times or receiving the HARQ feedback of the source node for K times, the terminal device disconnects the connection with the source node and initiates access in the target cell.
Further, if the terminal device does not perform cell change after transmitting the cell node change instruction information, the terminal device deletes the configured at least one condition configuration. Here, the condition configuration may include a measurement object, a measurement configuration, a trigger condition, a cell handover command, and a cell identity. The measurement object may be, for example, a frequency point or a Bandwidth Part (BWP), and the measurement configuration includes, but is not limited to, a measurement trigger event, a measurement quantity (e.g., Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Signal to Interference Noise Ratio (SINR)), a measurement start condition, a measurement end condition, a measurement duration, and the like.
Specifically, in other embodiments, after sending the cell change indication information to the source node, the terminal device performs one of the following operations: executing a fully configured wireless reconfiguration process; executing a partially fully configured wireless reconfiguration process; and executing a wireless reconfiguration process of delta variable configuration.
The method for cell change according to an embodiment of the present invention is described in detail above in conjunction with fig. 1. A terminal device according to an embodiment of the present invention will be described in detail below with reference to fig. 2.
Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 2, the terminal device 20 includes:
a processing module 21 for determining whether a target condition is satisfied;
a transceiver module 22, configured to send cell change indication information to the source node when the processing module 21 determines that the target condition is met, where the cell change indication information is used for the source node to determine whether the terminal device performs cell change after sending the cell change indication information.
According to the embodiment of the invention, the terminal equipment sends the cell change indication information to the network equipment when the target condition is met, so that the network equipment can know whether the terminal equipment performs cell change after sending the cell change indication information, and the problem of resource waste caused by reserving resources for the terminal equipment under the condition that the network equipment cannot know whether the terminal equipment performs cell change can be avoided.
Optionally, as an embodiment, the target condition includes one of the following conditions:
one trigger condition of the configured at least one trigger condition is satisfied;
when the configured trigger conditions are multiple, all the multiple trigger conditions are satisfied;
the configured at least one triggering condition is not met but the terminal equipment determines to execute the cell change command; and the number of the first and second groups,
the configured at least one trigger condition is partially fulfilled and the terminal device determines to execute the cell change command.
Optionally, as an embodiment, the cell change indication information includes at least one of the following information:
the terminal equipment determines the identification information of a cell change command to be executed;
identification information of a trigger condition that is satisfied in the configured at least one trigger condition;
a cell or cell list related to the cell change order determined to be executed by the terminal device;
a measurement object related to the cell change instruction information;
identification information of a measurement configuration related to the cell change indication information;
the terminal equipment accesses the relevant information of the target cell;
the corresponding relation between the relevant information of the target cell to be accessed by the terminal equipment;
time indication information for indicating an opportunity to perform cell change;
cell change capability of the terminal device;
an operation to be performed;
a check result of the cell change command; and the number of the first and second groups,
capability change information of the terminal device.
Optionally, as an embodiment, the information about the target cell to be accessed by the terminal device includes at least one of the following information:
the identification information of the target cell, the trigger condition corresponding to the target cell, the cell change command corresponding to the target cell, the measurement object corresponding to the target cell, and the measurement configuration corresponding to the target cell.
Optionally, as an embodiment, the time indication information indicates that the terminal device performs cell change at a time when the cell change indication information is sent; or the like, or, alternatively,
the time indication information indicates that the terminal equipment executes cell change after a preset time length begins at the moment of sending the cell change indication information; or the like, or, alternatively,
the time indication information indicates that the terminal equipment executes cell change at the moment of receiving the automatic repeat request ARQ feedback of the radio link layer control RLC layer entity from the source node for M times, wherein M is a positive integer greater than or equal to 1; or the like, or, alternatively,
the time indication information indicates that the terminal equipment executes cell change at the moment of receiving hybrid automatic repeat request (HARQ) feedback from the MAC layer entity of the source node for N times, wherein N is a positive integer greater than or equal to 1; or the like, or, alternatively,
the time indication information indicates that the terminal equipment executes cell change at the moment of receiving the confirmation response information aiming at the cell change indication information from the source node; or the like, or, alternatively,
the information indicating the time for performing cell change indicates that the terminal device does not perform cell change.
Optionally, as an embodiment, if the cell change indication information includes the time indication information and the time indication information indicates that the terminal device does not perform cell change, the cell change indication information further includes resource indication information, and the resource indication information is used for indicating resource configuration released by the terminal device.
Optionally, as an embodiment, the cell change capability of the terminal device includes one of the following capabilities:
make-before-break cell change;
cell change in a random access free process; and the number of the first and second groups,
and switching the double connection.
Optionally, as an embodiment, the operation to be performed includes one of the following operations:
executing a fully configured wireless reconfiguration process;
executing a partially fully configured wireless reconfiguration process; and the number of the first and second groups,
and executing the wireless reconfiguration process of delta variable configuration.
Optionally, as an embodiment, the transceiver module 22 is specifically configured to:
sending the cell change indication information to the source node S times, wherein S is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving an automatic repeat request (ARQ) feedback of a radio link layer (RLC) layer entity from the source node for T times, wherein T is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving HARQ (hybrid automatic repeat request) feedback sent by a Media Access Control (MAC) layer entity of the source node for K times, wherein K is a positive integer greater than or equal to 1; or the like, or, alternatively,
and sending the cell change indication information to the source node until receiving confirmation response information aiming at the cell change indication information from the source node.
Optionally, as an embodiment, as shown in fig. 3, the terminal device further includes a first communication module 23, where the first communication module 23 is configured to:
at the time when the transceiver module 22 sends the cell change instruction information to the source node, disconnecting the source node from the transceiver module, and initiating an access process in the target cell; or the like, or, alternatively,
after the time when the transceiver module sends the cell change indication information to the source node passes a preset time length, disconnecting the transceiver module from the source node, and initiating an access process in the target cell; or the like, or, alternatively,
after the transceiver module receives the determined response information of the source node for the cell change indication information, disconnecting the source node and initiating an access process in the target cell; or the like, or, alternatively,
when the transceiver module receives ARQ feedback from an RLC layer entity of the source node for T times, the connection with the source node is disconnected, and an access process is initiated in the target cell; or the like, or, alternatively,
and at the moment that the transceiving module receives the real HARQ feedback from the MAC layer of the source node for K times, disconnecting the transceiving module from the source node, and initiating an access process in the target cell.
Optionally, as an embodiment, after the transceiver module sends the cell change indication information to the source node, the processing module 21 is further configured to:
deleting the configured at least one conditional configuration.
Optionally, as an embodiment, as shown in fig. 4, the terminal device further includes a second communication module 24, and after the transceiver module 22 sends the cell change indication information to the source node, the second communication module 24 is configured to:
performing one of the following operations:
executing a fully configured wireless reconfiguration process;
executing a partially fully configured wireless reconfiguration process; and the number of the first and second groups,
and executing the wireless reconfiguration process of delta variable configuration.
The mobile terminal provided by the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of fig. 1, and is not described herein again in order to avoid repetition.
Fig. 5 shows a schematic structural diagram of a terminal device according to another embodiment of the present invention, and as shown in fig. 5, the terminal device 500 includes: at least one processor 510, memory 520, at least one network interface 530, and a user interface 540. The various components in the terminal device 500 are coupled together by a bus system 550. It will be appreciated that the bus system 550 is used to enable communications among the components for connection. The bus system 550 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are designated as bus system 550 in fig. 5.
The user interface 540 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It will be appreciated that memory 520 in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synclink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 320 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 520 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 521 and application programs 522.
The operating system 521 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 522 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 522.
In this embodiment of the present invention, the terminal device 500 further includes: a computer program stored in the memory 520 and capable of running on the processor 510, wherein when being executed by the processor 510, the computer program implements the processes of the method described in fig. 1, and can achieve the same technical effects, and therefore, in order to avoid repetition, the details are not described herein again.
The method disclosed in the above embodiments of the present invention may be applied to the processor 510, or implemented by the processor 510. Processor 510 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 510. The Processor 510 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 520, and the processor 510 reads the information in the memory 520 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer-readable storage medium has stored thereon a computer program, which when executed by the processor 510 implements the steps of the method embodiment as described above in fig. 1.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method embodiment shown in fig. 1, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A method for cell change, applied to a terminal device, includes:
determining whether a target condition is met or not under the condition that the terminal is configured with condition switching;
when the target condition is met, sending cell change indication information to a source node, wherein the cell change indication information is used for the source node to determine whether the terminal equipment performs cell change after sending the cell change indication information;
the target condition comprises one of the following conditions:
one trigger condition of the configured at least one trigger condition is satisfied;
when the configured trigger conditions are multiple, all the multiple trigger conditions are satisfied;
the configured at least one triggering condition is not met but the terminal equipment determines to execute the cell change command; and the number of the first and second groups,
the configured at least one trigger condition is partially satisfied and the terminal device determines to execute a cell change command;
the cell change indication information comprises time indication information used for indicating the time for changing the cell; the time indication information indicates that the terminal equipment executes cell change at the moment of receiving the confirmation response information aiming at the cell change indication information from the source node; the cell change indication information further comprises at least one of the following information:
the terminal equipment determines the identification information of a cell change command to be executed;
identification information of a trigger condition that is satisfied in the configured at least one trigger condition;
a cell or cell list related to the cell change order determined to be executed by the terminal device;
a measurement object related to the cell change instruction information;
identification information of a measurement configuration related to the cell change indication information;
the terminal equipment accesses the relevant information of the target cell;
and the corresponding relation between the relevant information of the target cell to be accessed by the terminal equipment.
2. The method of claim 1, wherein the information related to the target cell to be accessed by the terminal device comprises at least one of the following information:
the identification information of the target cell, the trigger condition corresponding to the target cell, the cell change command corresponding to the target cell, the measurement object corresponding to the target cell, and the measurement configuration corresponding to the target cell.
3. The method of claim 1, wherein the time indication information indicates the terminal equipment to perform cell change at a moment when it receives an automatic repeat request, ARQ, feedback from a radio link layer control, RLC, layer entity of the source node M times, M being a positive integer greater than or equal to 1; or the like, or, alternatively,
the time indication information indicates the terminal equipment to execute cell change at the moment of receiving hybrid automatic repeat request HARQ feedback from the MAC layer entity of the source node for N times, wherein N is a positive integer greater than or equal to 1.
4. The method of claim 1, wherein the sending cell change indication information to the source node comprises:
sending the cell change indication information to the source node S times, wherein S is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving an automatic repeat request (ARQ) feedback of a radio link layer (RLC) layer entity from the source node for T times, wherein T is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving HARQ (hybrid automatic repeat request) feedback sent by a Media Access Control (MAC) layer entity of the source node for K times, wherein K is a positive integer greater than or equal to 1; or the like, or, alternatively,
and sending the cell change indication information to the source node until receiving confirmation response information aiming at the cell change indication information from the source node.
5. The method of claim 4, further comprising:
after receiving the determined response information of the source node for the cell change indication information, disconnecting the source node and initiating an access process in the target cell; or the like, or, alternatively,
when the ARQ feedback of the RLC layer entity from the source node is received for T times, the connection with the source node is disconnected, and an access process is initiated in the target cell; or the like, or, alternatively,
and at the moment of receiving HARQ feedback from the MAC layer entity of the source node for K times, disconnecting the source node from the source node, and initiating an access process in the target cell.
6. The method of claim 1, wherein after sending the cell change indication information to the source node, the method further comprises:
deleting the configured at least one conditional configuration.
7. The method of claim 1, wherein after sending the cell change indication information to the source node, the method further comprises:
performing one of the following operations:
executing a fully configured wireless reconfiguration process;
executing a partially fully configured wireless reconfiguration process; and the number of the first and second groups,
and executing the wireless reconfiguration process of delta variable configuration.
8. A terminal device, comprising:
the processing module is used for determining whether a target condition is met or not under the condition that the terminal is configured with condition switching;
a receiving and sending module, configured to send cell change indication information to a source node when the processing module determines that a target condition is met, where the cell change indication information is used by the source node to determine whether a terminal device performs cell change after sending the cell change indication information;
the target condition comprises one of the following conditions:
one trigger condition of the configured at least one trigger condition is satisfied;
when the configured trigger conditions are multiple, all the multiple trigger conditions are satisfied;
the configured at least one triggering condition is not met but the terminal equipment determines to execute the cell change command; and the number of the first and second groups,
the configured at least one trigger condition is partially satisfied and the terminal device determines to execute a cell change command;
the cell change indication information comprises time indication information used for indicating the time for changing the cell; the time indication information indicates that the terminal equipment executes cell change at the moment of receiving the confirmation response information aiming at the cell change indication information from the source node; the cell change indication information further comprises at least one of the following information:
the terminal equipment determines the identification information of a cell change command to be executed;
identification information of a trigger condition that is satisfied in the configured at least one trigger condition;
a cell or cell list related to the cell change order determined to be executed by the terminal device;
a measurement object related to the cell change instruction information;
identification information of a measurement configuration related to the cell change indication information;
the terminal equipment accesses the relevant information of the target cell;
and the corresponding relation between the relevant information of the target cell to be accessed by the terminal equipment.
9. The terminal device of claim 8, wherein the transceiver module is specifically configured to:
sending the cell change indication information to the source node S times, wherein S is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving an automatic repeat request (ARQ) feedback of a radio link layer (RLC) layer entity from the source node for T times, wherein T is a positive integer greater than or equal to 1; or the like, or, alternatively,
sending the cell change indication information to the source node until receiving HARQ (hybrid automatic repeat request) feedback sent by a Media Access Control (MAC) layer entity of the source node for K times, wherein K is a positive integer greater than or equal to 1; or the like, or, alternatively,
and sending the cell change indication information to the source node until receiving confirmation response information aiming at the cell change indication information from the source node.
10. The terminal device of claim 9, further comprising a first communication module configured to:
after the transceiver module receives the determined response information of the source node for the cell change indication information, disconnecting the source node and initiating an access process in the target cell; or the like, or, alternatively,
when the transceiver module receives ARQ feedback from an RLC layer entity of the source node for T times, the connection with the source node is disconnected, and an access process is initiated in the target cell; or the like, or, alternatively,
and at the moment that the transceiver module receives HARQ feedback from the MAC layer entity of the source node for K times, disconnecting the connection with the source node and initiating an access process in the target cell.
11. The terminal device of claim 8, wherein after the transceiver module sends the cell change indication information to the source node, the processing module is further configured to:
deleting the configured at least one conditional configuration.
12. The terminal device according to claim 8, wherein the terminal device further comprises a second communication module, and after the transceiver module sends the cell change indication information to the source node, the second communication module is configured to:
performing one of the following operations:
executing a fully configured wireless reconfiguration process;
executing a partially fully configured wireless reconfiguration process; and the number of the first and second groups,
and executing the wireless reconfiguration process of delta variable configuration.
13. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, performs the steps of the method for cell change according to any of claims 1 to 7.
14. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method for cell change according to any one of claims 1 to 7.
Priority Applications (2)
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| CN201810279434.8A CN110324872B (en) | 2018-03-30 | 2018-03-30 | Method and apparatus for cell change |
| PCT/CN2019/079024 WO2019184788A1 (en) | 2018-03-30 | 2019-03-21 | Method and device for switching cells |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810279434.8A CN110324872B (en) | 2018-03-30 | 2018-03-30 | Method and apparatus for cell change |
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| CN114258706A (en) * | 2019-10-12 | 2022-03-29 | Oppo广东移动通信有限公司 | Switching processing method, terminal equipment and network equipment |
| CN116567865A (en) * | 2019-11-20 | 2023-08-08 | 华为技术有限公司 | Terminal device and wireless communication method |
| CN111526255B (en) * | 2020-04-29 | 2022-02-25 | Oppo广东移动通信有限公司 | Voice communication method, device, terminal and storage medium |
| CN111800840B (en) * | 2020-06-29 | 2022-10-28 | RealMe重庆移动通信有限公司 | Cell connection control method, device, mobile terminal and storage medium |
| CN114071624B (en) * | 2020-07-31 | 2024-01-12 | 维沃移动通信有限公司 | Switching method, switching device and communication equipment |
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