WO2024094121A1 - Method executed by user equipment, and user equipment - Google Patents

Method executed by user equipment, and user equipment Download PDF

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Publication number
WO2024094121A1
WO2024094121A1 PCT/CN2023/129323 CN2023129323W WO2024094121A1 WO 2024094121 A1 WO2024094121 A1 WO 2024094121A1 CN 2023129323 W CN2023129323 W CN 2023129323W WO 2024094121 A1 WO2024094121 A1 WO 2024094121A1
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Prior art keywords
user equipment
information
layer
configuration information
cell
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PCT/CN2023/129323
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French (fr)
Chinese (zh)
Inventor
张崇铭
常宁娟
刘仁茂
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夏普株式会社
张崇铭
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Publication of WO2024094121A1 publication Critical patent/WO2024094121A1/en

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    • 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
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present disclosure relates to the technical field of wireless communications, and in particular to a method executed by a user equipment and a corresponding user equipment.
  • the base station or the network side When a UE in an RRC connected state moves from the coverage area of one cell to the coverage area of another cell, in order to ensure service continuity, the base station or the network side usually instructs the UE to perform a cell switch (Cell Switch/Cell Handover) operation.
  • Cell Switch/Cell Handover Cell Switch/Cell Handover
  • the switch in the prior art is triggered by RRC signaling, that is, when the UE receives an RRC reconfiguration message carrying a synchronization identifier (here referred to as a layer 3 handover command), it will synchronize to the target cell specified in the message.
  • the period from receiving the layer 3 handover command to completing synchronization with the target cell is called the handover delay.
  • the UE After completing the synchronization, corresponding to the previously received RRC reconfiguration message carrying the synchronization identifier, the UE will generate an RRC reconfiguration completion message and submit it to the lower layer, adopting the new configuration for transmission.
  • the target cell When the target cell receives such an RRC reconfiguration completion message, it can start the retransmission of data.
  • a cell switching command based on cell mobility (L1/L2 triggered Mobility, LTM) triggered by layer 1 or layer 2 command is introduced.
  • the cell switching command is received at layer 1 or layer 2 of the UE, and then indicated to the upper layer, which executes the corresponding configuration information contained in the switching command.
  • the executed configuration information corresponds to the pre-configured candidate target cell. After the execution is completed, since the RRC reconfiguration completion message is no longer generated, how to notify the target cell of the switching completion is a problem that needs to be solved.
  • the purpose of the present disclosure is to propose a method executed by a user equipment and a corresponding user equipment, which can quickly notify the target cell of the completion of the handover so as to shorten the handover delay, thereby,
  • the switching delay can be shortened while ensuring the normal operation of the target cell after the switching, thereby improving the efficiency and quality of communication.
  • a method performed by a user equipment comprising the following steps:
  • the user equipment UE receives a handover command, in which information of a target cell is indicated;
  • the lower layer of the UE indicates to the radio resource control RRC layer that the handover command has been received, and the RRC layer executes the configuration information corresponding to the target cell based on the information;
  • the UE determines whether the configuration information carries synchronization indication information.
  • the RRC layer instructs the lower layer to generate switching response information or perform a switching response operation.
  • the UE further determines whether the operation of executing the configuration information corresponding to the target cell is triggered by LTM, wherein the LTM is based on cell mobility triggered by layer 1 or layer 2 commands.
  • the RRC layer instructs the lower layer to generate handover response information or perform handover response operation.
  • the UE does not instruct the lower layer to generate the handover response information.
  • the UE After successfully completing the synchronization, the UE instructs the lower layer to generate handover response information or perform a handover response operation.
  • the above-mentioned switching response information is indicated by the media access control layer control element MAC CE.
  • the performing of the switching response operation at least includes generating the switching response information.
  • the MAC layer successfully completes the random access process
  • the lower layers of the RRC layer indicate to the RRC layer that a physical downlink control channel PDCCH transmission has been successfully received.
  • the above handover response information is carried in the RRC message.
  • the UE detects in the executed cell configuration information that the configuration cannot be implemented according to the configuration information, it further determines whether the configuration information corresponds to the main cell group MCG or the secondary cell group SCG.
  • a user equipment comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, enable the user equipment to execute the method.
  • the method performed by the user equipment and the user equipment of the present disclosure when performing a cell switching operation, it is possible to shorten the switching delay while ensuring the normal operation of the target cell after the switching, thereby improving the efficiency and quality of communication.
  • FIG. 1 is a flow chart showing a method executed by a user equipment UE according to an embodiment of the present invention.
  • FIG. 2 is a simplified structural block diagram of a user equipment involved in the present invention.
  • Dual connection or multi-connection means that a UE working in a connected state establishes a physical wireless path with more than one network node to achieve data transmission, including a master node (MN) and a secondary node (SN).
  • MN master node
  • SN secondary node
  • the MN is executed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next-generation core network (5G core network).
  • the service cell group controlled by the MN is called the Master Cell Group. MCG).
  • MCG Master Cell Group
  • PCell Primary Cell
  • RLM radio link monitoring
  • SCell Secondary Cell
  • the SN is performed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next-generation core network (5G core network).
  • the service cell group controlled by the SN is called the Secondary Cell Group (SCG).
  • the SCG contains at least one primary service cell, called the PSCell (Primary SCG Cell).
  • the UE performs wireless link monitoring on the PSCell. If other cells are included in the SCG, they can be collectively referred to as secondary service cells SCell.
  • An SRB can be established between the SN and the UE, usually called SRB3, which is mainly used to transmit RRC messages between the SN and the UE, such as measurement reports associated with the SCG.
  • LTM Layer 1/Layer 2-triggered mobility, L1/L2 triggered mobility
  • LTM refers to the mobility operation performed by the UE when receiving layer 1/layer 2 signaling.
  • layer 1/layer 2 signaling refers to signaling used for cell switching, and such signaling carries or indicates information about the target cell.
  • the UE implements the change of the serving cell by applying or executing the configuration information of the target cell.
  • layer 1 generally corresponds to the physical layer
  • layer 2 corresponds to the MAC layer
  • layer 3 can correspond to the RRC layer and the non-access layer above the RRC.
  • layer 1 and layer 2 can belong to the access layer.
  • layer 1 is located below layer 2, and layer 2 is located below layer 3. It is generally believed that the lower layer of the UE corresponds to the physical layer or the MAC layer, and such a lower layer is located below the RRC layer.
  • the target cell refers to the cell that will replace the current serving cell and provide services to the UE.
  • the serving cell that provides services to the UE before receiving the handover signaling can be called the source cell. That is, after receiving the handover signaling, the UE will switch from the source cell to the target cell, and the target cell will continue to provide services to the UE.
  • the movement of the UE leads to a change in the serving cell, which is triggered by L1 or L2.
  • the handover and cell change involved in this article are mainly the handover and cell change triggered by the LTM mentioned above.
  • the configuration information of the cell group may include at least the configuration information of the MAC layer of the cell group, the configuration information of the physical layer, the configuration information of the primary serving cell (Spcell), and the configuration information of the optional secondary serving cell.
  • the configuration information of the target cell is included in the cell group configuration information, that is, the configuration information of the primary serving cell in the cell group configuration information can be used for the configuration of the target cell.
  • the configuration information of the target cell and the configuration information of the cell group can be replaced with each other.
  • the switching command can be a message or instruction instructing the UE to synchronize with the target cell.
  • FIG. 1 is a flow chart showing a method executed by a user equipment UE according to an embodiment of the present invention.
  • Step 1 The UE receives a handover command (Cell Switch Command/Handover Command) (step S101 shown in FIG1 ).
  • the handover command indicates information about the target cell, for example, an index or identity of the target cell configuration information, or identity information corresponding to the target cell configuration.
  • the message of the target cell indicated above may be carried in the MAC CE or the DCI, that is, the switching command may be carried by the MAC CE or the DCI.
  • the MAC CE or the DCI indicating the target cell message may be considered as the switching command.
  • Step 2 The lower layer of the UE indicates to the RRC layer that the above-mentioned handover command has been received, and the RRC layer executes the configuration information corresponding to the target cell based on the above-mentioned information (step S102 shown in FIG. 1 ).
  • the lower layer of the UE such as the PHY or MAC layer, indicates to the RRC layer that it has received
  • the above-mentioned handover command indicates the information of the target cell to the RRC layer.
  • the RRC layer applies or executes the configuration information corresponding to the target cell.
  • Such configuration information may be the configuration information that the UE has received from the base station or the network side before receiving the above switching command and stored on the UE side.
  • such configuration information should also be valid or within the validity period. If the corresponding configuration information is invalid when the switching command is received, the UE can ignore the switching command, that is, not perform any operation. Or, after judging that the configuration information is invalid, the RRC connection reestablishment procedure (RRC Connection Reestablishment procedure) is started.
  • Step 3 During the process of executing the configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information (step S103 shown in FIG. 1 ).
  • the UE determines whether the synchronization indication information is carried in the configuration information. If the synchronization indication information is carried, the RRC layer of the UE can instruct the lower layer, such as the MAC layer or the PHY layer, to generate the switching response information or to perform the switching response operation. Preferably, the UE can instruct the lower layer to generate the switching response information or to perform the switching response operation after successfully completing the synchronization.
  • the RRC layer of the UE can instruct the lower layer, such as the MAC layer or the PHY layer, to generate the switching response information or to perform the switching response operation.
  • the handover response information here may be indicated by a MAC CE, that is, a MAC CE is designed to indicate a handover response.
  • the handover here refers to a handover triggered by an LTM.
  • the MAC CE may also carry information of the source cell, such as a cell ID of the source cell.
  • the execution of the handover response operation may at least include generating handover response information, and may also include sending the response information.
  • the above-mentioned MAC CE indicating the handover response is generated, and then packaged and sent in the received uplink grant (UL grant).
  • the priority of transmission of such MAC CE is higher than the priority of data transmission.
  • Step 1 The UE executes the cell configuration information, i.e., applies the configuration information corresponding to the cell.
  • the UE may execute the cell configuration information after receiving the RRC connection reconfiguration message, or after receiving the handover command mentioned above, or other reasons may cause the UE to start executing this operation.
  • Step 2 During the process of executing the cell configuration information, the UE determines whether the configuration information carries synchronization indication information:
  • the UE can further determine the execution of the cell Whether this configuration information operation is triggered by LTM:
  • the RRC layer of the UE instructs the lower layer, such as the MAC layer or the PHY layer, to generate the handover response information or to perform the handover response operation.
  • the UE can instruct the lower layer to generate the handover response information or to perform the handover response operation after successfully completing the synchronization.
  • the UE does not instruct the lower layer to generate the handover response information.
  • the UE does not perform the above operation.
  • the moment of "UE successfully completes synchronization" described in Embodiment 1 may be determined based on one or more of the following operations (i.e., the moment of completion of the following operations may be regarded as "UE successfully completes synchronization"):
  • Operation 1 The MAC layer successfully completes the random access procedure (Succesfully Complete a Random Access Procedure);
  • Operation 2 stop the handover management timer, such as T304, or a timer similar to T304, which may be a timer started when the UE receives a handover command or performs a handover operation, or a timer that can determine that a handover (or synchronization) fails after a timeout;
  • T304 stop the handover management timer, such as T304, or a timer similar to T304, which may be a timer started when the UE receives a handover command or performs a handover operation, or a timer that can determine that a handover (or synchronization) fails after a timeout;
  • Operation three below the RRC layer, such as the MAC layer, indicates to the RRC layer that a PDCCH transmission is successfully received.
  • the PDCCH is destined for the C-RNTI of the UE (a PDCCH transmission addressed to C-RNTI).
  • the switching response information may be carried in an RRC message.
  • a message may utilize an existing RRC message, such as an MRDC uplink information transfer message ULInformationTransferMRDC, or a newly designed LTM response message.
  • a cell LTM response can be set in the message, named LTM response, so when executing the steps in Example 1
  • the UE determines whether the configuration information carries synchronization indication information. If synchronization indication information is carried, a cell LTM response (LTM response) can be set in the content of the ULInformationTransferMRDC message, for example, a value of 1, or the cell LTM response is added to the information, and the message is submitted to the lower layer for transmission.
  • the LTM response cell can be set in the ULInformationTransferMRDC message, for example, the value is 1, or the LTM response cell is added to the message, and the message is submitted to the lower layer for transmission.
  • an LTM response message for LTM response is used.
  • the UE determines whether the configuration information carries synchronization indication information, and if the synchronization indication information is carried, the LTM response message can be delivered to the lower layer for transmission.
  • step 2 of the variant example in Example 1 when it comes to "If the operation of executing cell configuration information is triggered by LTM, or the execution of cell configuration information is caused by the execution of LTE," the LTM response message is submitted to the lower layer for transmission.
  • Example 3 it can be determined whether the cell configuration information executed by the UE is transmitted via SRB3 or SRB1.
  • the target cell indicated in the handover command received by the UE is the Pscell of the SCG, or the cell configuration information executed by the UE corresponds to the configuration information of the SCG, then the transmission of the RRC message described in Example 3 can be performed in the following manner.
  • the cell configuration information executed by the UE is transmitted via SRB3, for example, the cell configuration information is carried in the RRC reconfiguration information, and then the reconfiguration information is sent by the base station to the UE via SRB3, then when the UE sends the corresponding LTM response message (or the ULInformationTransferMRDC message carrying the LTM response information), it needs to be sent via SRB3.
  • the cell configuration information executed by the UE is transmitted via SRB1, for example, the cell configuration information is carried in the RRC reconfiguration information, and then the reconfiguration information is sent by the base station to the UE via SRB1, then the UE sends the corresponding LTM response message (or carries the LTM response When sending ULInformationTransferMRDC message of information, it needs to be sent via SRB1.
  • the target cell indicated in the handover command received by the UE is the Pcell of the MCG, or the cell configuration information executed by the UE corresponds to the configuration information of the MCG, then the RRC message described in Example 3 needs to be sent via SRB1.
  • the UE detects in the executed cell configuration information that it cannot be configured according to the configuration information, or cannot apply the configuration information (Inability to comply with the configuration). Then, according to whether the configuration information corresponds to MCG or SCG, the following processing can be performed:
  • the UE can initiate the SCG failure information reporting process and send relevant information about the SCG failure to the base station; optionally, the UE can initiate the SCG failure information process (initiate SCG failure Inforamtion procedure) without suspending the transmission of the MCG, report relevant information about the SCG failure to the base station/network side, and optionally stop or terminate the LTM-related processes or operations;
  • the UE can start the RRC connection re-establishment process and send an RRC connection re-establishment request to the base station/network side.
  • This embodiment can also be used alone to restore the connection when the cell configuration information cannot be executed.
  • FIG2 is a block diagram showing a user equipment UE20 according to an embodiment of the present disclosure.
  • the user equipment UE20 includes a processor 201 and a memory 202.
  • the processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc.
  • the memory 202 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memories, etc.
  • Program instructions are stored on the memory 202. When the instructions are executed by the processor 201, the above-mentioned method performed by the user equipment described in detail in the present disclosure (such as the method shown in FIG1 ) may be executed.
  • the program running on the device may be a program that enables a computer to implement the functions of the embodiments of the present disclosure by controlling a central processing unit (CPU).
  • the program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory systems.
  • the program for realizing the functions of each embodiment of the present disclosure can be recorded on a computer-readable recording medium.
  • the corresponding functions can be realized by making a computer system read the program recorded on the recording medium and executing these programs.
  • the so-called "computer system” herein can be a computer system embedded in the device, and can include an operating system or hardware (such as a peripheral device).
  • "Computer-readable recording medium” can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.
  • circuits e.g., monolithic or multi-chip integrated circuits.
  • Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices.
  • DSPs digital signal processors
  • ASICs application-specific integrated circuits
  • FPGAs field programmable gate arrays
  • the general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine.
  • the above circuits may be digital circuits or analog circuits. In the case where new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.
  • UE devices installed indoors or outdoors can be used as UE devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

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Abstract

The present disclosure provides a method executed by a user equipment (UE), and a UE. The method executed by a UE comprises the following steps: a UE receives a handover command, the handover command indicating information of a target cell; a lower layer of the UE indicates to an RRC layer that the handover command has been received, and the RRC layer executes, on the basis of the information, configuration information corresponding to the target cell; and in the process of executing the configuration information corresponding to the target cell, the UE determines whether synchronization indication information is carried in the configuration information, and if the synchronization indication information is carried in the configuration information, the RRC layer instructs the lower layer to generate handover response information or execute a handover response operation.

Description

由用户设备执行的方法以及用户设备Method performed by user equipment and user equipment 技术领域Technical Field
本公开涉及无线通信技术领域，具体涉及一种由用户设备执行的方法以及相应的用户设备。The present disclosure relates to the technical field of wireless communications, and in particular to a method executed by a user equipment and a corresponding user equipment.
背景技术Background technique
当处于RRC连接态的UE从一个小区的覆盖区域移动到另外一个小区的覆盖区域时，为了保证服务的连续性，基站或者网络侧通常会指示UE执行小区切换(Cell Switch/Cell Handover)操作。现有技术中的切换，是由RRC信令触发的，即，UE接收到携带同步标识的RRC重配置消息(这里称为层3的切换命令)时，将同步到在该消息中指定的目标小区。从接收到层3的切换命令到完成与目标小区的同步，这段时间被称为切换时延。在完成同步之后，对应于之前接收到的携带同步标识的RRC重配置消息，UE会生成RRC重配置完成消息，并递交给下层，采用新的配置，进行传输。目标小区接收到这样的RRC重配置完成消息，可以启动数据的续传。When a UE in an RRC connected state moves from the coverage area of one cell to the coverage area of another cell, in order to ensure service continuity, the base station or the network side usually instructs the UE to perform a cell switch (Cell Switch/Cell Handover) operation. The switch in the prior art is triggered by RRC signaling, that is, when the UE receives an RRC reconfiguration message carrying a synchronization identifier (here referred to as a layer 3 handover command), it will synchronize to the target cell specified in the message. The period from receiving the layer 3 handover command to completing synchronization with the target cell is called the handover delay. After completing the synchronization, corresponding to the previously received RRC reconfiguration message carrying the synchronization identifier, the UE will generate an RRC reconfiguration completion message and submit it to the lower layer, adopting the new configuration for transmission. When the target cell receives such an RRC reconfiguration completion message, it can start the retransmission of data.
为了缩短切换时延，一种基于层1或者层2命令触发的小区移动性(L1/L2 triggered Mobility，LTM)的小区切换命令被引入。该小区切换命令在UE的层1或者层2被接收，然后指示给上层，由上层来执行包含在切换命令中对应的配置信息。被执行的配置信息对应于预先配置的候选目标小区。在执行完成之后，由于不再生成RRC重配置完成消息，那么如何通知目标小区切换完成是需要解决的问题。In order to shorten the switching delay, a cell switching command based on cell mobility (L1/L2 triggered Mobility, LTM) triggered by layer 1 or layer 2 command is introduced. The cell switching command is received at layer 1 or layer 2 of the UE, and then indicated to the upper layer, which executes the corresponding configuration information contained in the switching command. The executed configuration information corresponds to the pre-configured candidate target cell. After the execution is completed, since the RRC reconfiguration completion message is no longer generated, how to notify the target cell of the switching completion is a problem that needs to be solved.
发明内容Summary of the invention
本公开的目的在于，提出一种由用户设备执行的方法以及相应的用户设备，能够快速地通知目标小区切换完成从而缩短切换时延，因而， 在执行小区切换操作时，能够在缩短切换时延的同时确保目标小区在切换之后的正常工作，从而能够提高通信的效率和质量。The purpose of the present disclosure is to propose a method executed by a user equipment and a corresponding user equipment, which can quickly notify the target cell of the completion of the handover so as to shorten the handover delay, thereby, When performing a cell switching operation, the switching delay can be shortened while ensuring the normal operation of the target cell after the switching, thereby improving the efficiency and quality of communication.
根据本公开的一个方面，提供一种由用户设备执行的方法，包括如下步骤：According to one aspect of the present disclosure, a method performed by a user equipment is provided, comprising the following steps:
用户设备UE接收到切换命令，在该切换命令中指示了目标小区的信息；The user equipment UE receives a handover command, in which information of a target cell is indicated;
UE的下层向无线资源控制RRC层指示接收到上述切换命令，RRC层基于上述信息来执行对应于目标小区的配置信息；The lower layer of the UE indicates to the radio resource control RRC layer that the handover command has been received, and the RRC layer executes the configuration information corresponding to the target cell based on the information;
在执行对应于目标小区的配置信息的过程中，UE判断在该配置信息中是否携带了同步指示信息，In the process of executing the configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information.
如果携带了同步指示信息，那么RRC层向下层指示生成切换响应信息或者是执行切换响应操作。If the synchronization indication information is carried, the RRC layer instructs the lower layer to generate switching response information or perform a switching response operation.
在上述的由用户设备执行的方法中，优选地，还包括如下步骤：In the above method performed by the user equipment, preferably, the following steps are also included:
如果携带了同步指示信息，那么UE进一步判断执行对应于目标小区的配置信息这一操作是否是由LTM触发的，其中，该LTM是基于层1或者层2命令触发的小区移动性，If the synchronization indication information is carried, the UE further determines whether the operation of executing the configuration information corresponding to the target cell is triggered by LTM, wherein the LTM is based on cell mobility triggered by layer 1 or layer 2 commands.
如果上述操作是由LTM触发的，那么RRC层向下层指示生成切换响应信息或者是执行切换响应操作，If the above operation is triggered by LTM, the RRC layer instructs the lower layer to generate handover response information or perform handover response operation.
如果上述操作不是由LTM触发的，那么UE不向下层指示生成切换响应信息。If the above operation is not triggered by LTM, the UE does not instruct the lower layer to generate the handover response information.
在上述的由用户设备执行的方法中，优选地，In the above method performed by the user equipment, preferably,
在成功完成同步之后，UE指示下层生成切换响应信息或者是执行切换响应操作。After successfully completing the synchronization, the UE instructs the lower layer to generate handover response information or perform a handover response operation.
在上述的由用户设备执行的方法中，优选地，In the above method performed by the user equipment, preferably,
上述切换响应信息由媒体接入控制层控制元素MAC CE指示切换响应。The above-mentioned switching response information is indicated by the media access control layer control element MAC CE.
在上述的由用户设备执行的方法中，优选地，In the above method performed by the user equipment, preferably,
上述执行切换响应操作至少包括生成上述切换响应信息。The performing of the switching response operation at least includes generating the switching response information.
在上述的由用户设备执行的方法中，优选地，In the above method performed by the user equipment, preferably,
在下述任一种操作完成时，确定UE成功完成同步，上述操作为：When any of the following operations is completed, it is determined that the UE has successfully completed synchronization, the operations being:
MAC层成功完成了随机接入过程； The MAC layer successfully completes the random access process;
停止切换管理定时器；Stop the switch management timer;
RRC层的下层向RRC层指示成功接收到物理下行控制信道PDCCH传输。The lower layers of the RRC layer indicate to the RRC layer that a physical downlink control channel PDCCH transmission has been successfully received.
在上述的由用户设备执行的方法中，优选地，In the above method performed by the user equipment, preferably,
上述切换响应信息携带在RRC消息中。The above handover response information is carried in the RRC message.
在上述的由用户设备执行的方法中，优选地，还包括如下步骤：In the above method performed by the user equipment, preferably, the following steps are also included:
判断UE执行的小区配置信息是经由信令无线承载SRB3传输的，还是经由SRB1传输的。It is determined whether the cell configuration information executed by the UE is transmitted via the signaling radio bearer SRB3 or SRB1.
在上述的由用户设备执行的方法中，优选地，还包括如下步骤：In the above method performed by the user equipment, preferably, the following steps are also included:
如果UE在执行的小区配置信息中检测到无法按照该配置信息进行配置实施，那么进一步判断该配置信息对应是主小区组MCG还是辅小区组SCG。If the UE detects in the executed cell configuration information that the configuration cannot be implemented according to the configuration information, it further determines whether the configuration information corresponds to the main cell group MCG or the secondary cell group SCG.
根据本公开的另一方面，提供一种用户设备，包括：处理器；以及存储器，存储有指令；其中，上述指令在由上述处理器运行时使上述用户设备执行上述方法。According to another aspect of the present disclosure, a user equipment is provided, comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, enable the user equipment to execute the method.
发明效果Effects of the Invention
根据本公开的由用户设备执行的方法以及用户设备，在执行小区切换操作时，能够在缩短切换时延的同时确保目标小区在切换之后的正常工作，从而能够提高通信的效率和质量。According to the method performed by the user equipment and the user equipment of the present disclosure, when performing a cell switching operation, it is possible to shorten the switching delay while ensuring the normal operation of the target cell after the switching, thereby improving the efficiency and quality of communication.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
通过下文结合附图的详细描述，本公开的上述和其它特征将会变得更加明显，其中：The above and other features of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
图1是表示本发明的一实施例涉及的用户设备UE执行的方法的流程图。FIG. 1 is a flow chart showing a method executed by a user equipment UE according to an embodiment of the present invention.
图2是本发明所涉及的用户设备的简要结构框图。FIG. 2 is a simplified structural block diagram of a user equipment involved in the present invention.
需要注意的是，附图不一定按比例绘制，重点在于示出本文公开的技术的原理。另外，为了清楚起见，贯穿附图中的相似的附图标记指代相似的元素。It should be noted that the drawings are not necessarily drawn to scale, emphasis instead being placed on illustrating the principles of the technology disclosed herein. In addition, for clarity, like reference numerals throughout the drawings refer to like elements.
具体实施方式 Detailed ways
下面结合附图和具体实施方式对本公开进行详细阐述。应当注意，本公开不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本公开没有直接关联的公知技术的详细描述，以防止对本公开的理解造成混淆。The present disclosure is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the present disclosure should not be limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of known technologies that are not directly related to the present disclosure are omitted to prevent confusion in the understanding of the present disclosure.
在具体描述之前，先对本公开中提到的若干术语做如下说明。除非另有指出，本公开中涉及的术语都具有下文的含义。Before the detailed description, some terms mentioned in the present disclosure are explained as follows. Unless otherwise specified, the terms involved in the present disclosure have the following meanings.
UE      User Equipment用户设备UE      User Equipment
RLF     Radio Link Failure无线链路失败RLF     Radio Link FailureRadio link failure
NR      New Radio新一代无线技术NR      New Radio New generation wireless technology
LTE     Long Term Evolution长期演进技术LTE Long Term Evolution
Elte    Enhaced Long Term Evolution增强的长期演进技术Elte    Enhaced Long Term Evolution Enhanced Long Term Evolution technology
RRC     Radio Resource Control无线资源控制RRC     Radio Resource Control
PDCP    Packet Data Convergence Protocol分组数据汇聚协议(层)PDCP    Packet Data Convergence Protocol Packet Data Convergence Protocol (layer)
RLC     Radio Link Control无线链路控制(层)RLC     Radio Link Control Radio link control (layer)
MAC     Medium Access Control媒体接入控制(层)MAC     Medium Access Control Media Access Control (layer)
PHY     physical layer物理层PHY     physical layer
MAC CE  Medium Access Control Control Element媒体接入控制层控制元素MAC CE Medium Access Control Control Element Media access control layer control element
PDU     Protocol Data Unit协议数据单元PDU     Protocol Data Unit Protocol Data Unit
HARQ    Hybrid Automatic Repeat reQuest混合自动重传请求HARQ    Hybrid Automatic Repeat reQuest Hybrid automatic retransmission request
DCI     Downlink Control Information下行控制信息DCI     Downlink Control Information Downlink control information
SRB     signaling radio bear信令无线承载SRB     signaling radio bear signaling radio bear
PDCCH   Physical Downlink Control Channel物理下行控制信道PDCCH Physical Downlink Control Channel Physical Downlink Control Channel
双连接或者多连接，是指工作在连接态的UE与多于一个网络节点建立物理上的建立无线通路，并实现数据传输。其中，包括主控制节点(Master Node，MN)与辅助控制节点(Secondary Node，SN)。Dual connection or multi-connection means that a UE working in a connected state establishes a physical wireless path with more than one network node to achieve data transmission, including a master node (MN) and a secondary node (SN).
MN由一个基站来执行，可以是支持5G技术的Gnb，或者是支持4G技术的Enb，还可以是支持连接到下一代核心网(5G核心网)的ng-eNB。由MN控制的服务小区组称为主小区组(Master Cell Group， MCG)。其中至少有一个主服务小区，被称PCell(Primary Cell)，UE在PCell上进行无线链路监测(radio link mornitoring，RLM)。MCG中如果还包含了其他小区，可以统称为辅助服务小区SCell(Secondary Cell)。MN和UE之间建立的SRB，通常称为SRB1，主要用于传递MN和UE之间的RRC消息。The MN is executed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next-generation core network (5G core network). The service cell group controlled by the MN is called the Master Cell Group. MCG). There is at least one primary service cell, called PCell (Primary Cell), on which the UE performs radio link monitoring (RLM). If other cells are included in the MCG, they can be collectively referred to as secondary service cells SCell (Secondary Cell). The SRB established between the MN and the UE is usually called SRB1, which is mainly used to transmit RRC messages between the MN and the UE.
SN由一个基站来执行，可以是支持5G技术的Gnb，或者是支持4G技术的Enb，还可以是支持连接到下一代核心网(5G核心网)的ng-eNB。由SN控制的服务小区组称为辅小区组(Secondary Cell Group，SCG)。其中SCG中至少包含了一个主服务小区，被称为PSCell(Primary SCG Cell)。UE在PSCell上进行无线链路监测。SCG中如果还包含了其他小区，可以统称为辅助服务小区SCell。SN和UE之间可以建立SRB，通常称为SRB3，主要用于传递SN和UE之间的RRC消息，例如SCG相关联的测量报告。SN is performed by a base station, which can be a Gnb supporting 5G technology, an Enb supporting 4G technology, or an ng-eNB supporting connection to the next-generation core network (5G core network). The service cell group controlled by the SN is called the Secondary Cell Group (SCG). The SCG contains at least one primary service cell, called the PSCell (Primary SCG Cell). The UE performs wireless link monitoring on the PSCell. If other cells are included in the SCG, they can be collectively referred to as secondary service cells SCell. An SRB can be established between the SN and the UE, usually called SRB3, which is mainly used to transmit RRC messages between the SN and the UE, such as measurement reports associated with the SCG.
LTM(Layer1/Layer 2-triggered mobility，L1/L2 triggered mobility)层1/层2触发的移动性LTM (Layer 1/Layer 2-triggered mobility, L1/L2 triggered mobility)
LTM是指UE在接收到层1/层2的信令时进行移动性操作。这里层1/层2的信令是指用于小区切换的信令，在这样的信令中携带了或者指示了目标小区的信息。UE通过应用或者执行目标小区的配置信息，实现了服务小区的变更。在UE架构中，层1一般对应物理层，层2对应着MAC层，层3可以对应RRC层以及RRC之上的非接入层。此外，层1和层2可以属于接入层。此外，层1位于层2之下，层2位于层3之下，一般认为UE的下层对应于物理层或者是MAC层，这样的下层是位于RRC层之下的。LTM refers to the mobility operation performed by the UE when receiving layer 1/layer 2 signaling. Here, layer 1/layer 2 signaling refers to signaling used for cell switching, and such signaling carries or indicates information about the target cell. The UE implements the change of the serving cell by applying or executing the configuration information of the target cell. In the UE architecture, layer 1 generally corresponds to the physical layer, layer 2 corresponds to the MAC layer, and layer 3 can correspond to the RRC layer and the non-access layer above the RRC. In addition, layer 1 and layer 2 can belong to the access layer. In addition, layer 1 is located below layer 2, and layer 2 is located below layer 3. It is generally believed that the lower layer of the UE corresponds to the physical layer or the MAC layer, and such a lower layer is located below the RRC layer.
这里目标小区是指将要代替目前的服务小区而为UE提供服务的小区。而在接收到切换信令之前为UE提供服务的服务小区可以被称为源小区。即，在接收到切换信令之后，UE将从源小区切换到目标小区，由目标小区为UE继续为UE提供服务。UE的移动导致了服务小区的变更，这样的变更由L1或者L2来触发。Here, the target cell refers to the cell that will replace the current serving cell and provide services to the UE. The serving cell that provides services to the UE before receiving the handover signaling can be called the source cell. That is, after receiving the handover signaling, the UE will switch from the source cell to the target cell, and the target cell will continue to provide services to the UE. The movement of the UE leads to a change in the serving cell, which is triggered by L1 or L2.
在本文中涉及的切换和小区变更，主要是上述的LTM触发的切换和小区变更。 The handover and cell change involved in this article are mainly the handover and cell change triggered by the LTM mentioned above.
小区组的配置信息Cell group configurationCell group configuration
小区组的配置信息中可以至少包括小区组的MAC层的配置信息，物理层的配置信息，主服务小区(Spcell)的配置信息，以及可选的辅助服务小区的配置信息等。The configuration information of the cell group may include at least the configuration information of the MAC layer of the cell group, the configuration information of the physical layer, the configuration information of the primary serving cell (Spcell), and the configuration information of the optional secondary serving cell.
由于目标小区的配置信息是包含在小区组配置信息中，即在小区组配置信息中的主服务小区的配置信息可以用于目标小区的配置。Since the configuration information of the target cell is included in the cell group configuration information, that is, the configuration information of the primary serving cell in the cell group configuration information can be used for the configuration of the target cell.
因此在本文中，目标小区的配置信息和小区组的配置信息可以相互替换。Therefore, in this article, the configuration information of the target cell and the configuration information of the cell group can be replaced with each other.
本文中相关联的，相对应的，相应的等说法可以相互替换。In this article, the terms associated, corresponding, and relevant can be used interchangeably.
由于UE在进行小区变更(Cell Switch)时需要对目标小区进行上行或者下行的同步(synchronization，sync)操作，因此，在本文中“小区变更”也可以由“小区同步”进行替换，即切换命令可以是指示UE对目标小区进行同步的消息或者指示。Since the UE needs to perform uplink or downlink synchronization (synchronization, sync) operation on the target cell when performing a cell change (Cell Switch), "cell change" can also be replaced by "cell synchronization" in this article, that is, the switching command can be a message or instruction instructing the UE to synchronize with the target cell.
图1是表示本发明的一实施例涉及的用户设备UE执行的方法的流程图。FIG. 1 is a flow chart showing a method executed by a user equipment UE according to an embodiment of the present invention.
下面，结合实施例，对本公开的由用户设备执行的方法进行说明。The method executed by the user equipment of the present disclosure is described below in conjunction with an embodiment.
实施例1Example 1
步骤一：UE接收到切换命令(Cell Switch Command/Handover Command)(图1所示的步骤S101)。在该切换命令中指示了目标小区的信息，例如，目标小区配置信息的序号(index)或者标识(identity)，或者是对应于目标小区配置的标识信息。Step 1: The UE receives a handover command (Cell Switch Command/Handover Command) (step S101 shown in FIG1 ). The handover command indicates information about the target cell, for example, an index or identity of the target cell configuration information, or identity information corresponding to the target cell configuration.
上述指示的目标小区的消息可以携带在MAC CE中，或者是DCI中，即切换命令可以是由MAC CE或者是DCI来承载，可以认为指示了上述目标小区消息的MAC CE或者是DCI即为切换命令。The message of the target cell indicated above may be carried in the MAC CE or the DCI, that is, the switching command may be carried by the MAC CE or the DCI. The MAC CE or the DCI indicating the target cell message may be considered as the switching command.
步骤二：UE的下层向RRC层指示接收到上述切换命令，RRC层基于上述信息来执行对应于目标小区的配置信息(图1所示的步骤S102)。Step 2: The lower layer of the UE indicates to the RRC layer that the above-mentioned handover command has been received, and the RRC layer executes the configuration information corresponding to the target cell based on the above-mentioned information (step S102 shown in FIG. 1 ).
具体地，UE的下层，例如PHY或者MAC层向RRC层指示接收到 上述切换命令，以及优选的，向RRC层指示目标小区的信息。Specifically, the lower layer of the UE, such as the PHY or MAC layer, indicates to the RRC layer that it has received The above-mentioned handover command, and preferably, indicates the information of the target cell to the RRC layer.
RRC层基于上述指示信息，应用(apply)或者执行对应于该目标小区的配置信息。这样的配置信息可以是UE在接收到上述切换命令之前就已经从基站或者网络侧接收、并且保存在UE侧的配置信息。优选的，这样的配置信息还应该是有效的，或者处于有效期内的。如果对应的配置信息在收到切换命令时已经失效，那么UE可以忽略该切换命令，即不执行任何操作。或者是在判断配置信息无效后启动RRC连接重建立流程(RRC Connection Reestablishment procedure)。Based on the above indication information, the RRC layer applies or executes the configuration information corresponding to the target cell. Such configuration information may be the configuration information that the UE has received from the base station or the network side before receiving the above switching command and stored on the UE side. Preferably, such configuration information should also be valid or within the validity period. If the corresponding configuration information is invalid when the switching command is received, the UE can ignore the switching command, that is, not perform any operation. Or, after judging that the configuration information is invalid, the RRC connection reestablishment procedure (RRC Connection Reestablishment procedure) is started.
步骤三：在执行对应于目标小区的配置信息的过程中，UE判断在该配置信息中是否携带了同步指示信息(图1所示的步骤S103)。Step 3: During the process of executing the configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information (step S103 shown in FIG. 1 ).
具体地，在执行上述对应于目标小区的配置信息过程中，UE判断在配置信息中是否携带了同步指示信息，如果携带了同步指示信息，那么UE的RRC层可以向下层，例如MAC层或者是PHY层指示生成切换响应信息或者是执行切换响应操作。优选的，UE可以在成功完成同步之后，指示下层生成切换响应信息，或者是执行切换响应操作。Specifically, in the process of executing the configuration information corresponding to the target cell, the UE determines whether the synchronization indication information is carried in the configuration information. If the synchronization indication information is carried, the RRC layer of the UE can instruct the lower layer, such as the MAC layer or the PHY layer, to generate the switching response information or to perform the switching response operation. Preferably, the UE can instruct the lower layer to generate the switching response information or to perform the switching response operation after successfully completing the synchronization.
这里的切换响应信息可以是由MAC CE指示，即设计一个MAC CE用于指示切换响应，优选的，这里的切换是指LTM触发的切换。在该MAC CE中还可以携带源小区的信息，例如源小区的小区标识等。The handover response information here may be indicated by a MAC CE, that is, a MAC CE is designed to indicate a handover response. Preferably, the handover here refers to a handover triggered by an LTM. The MAC CE may also carry information of the source cell, such as a cell ID of the source cell.
这里的执行切换响应操作，可以至少包括生成切换响应信息，还可以包括对该响应信息进行发送。例如生成上述的指示切换响应的MAC CE，然后进行组包，并在接收到的上行授权(UL grant)进行发送。优选的，这样的MAC CE的传输的优先级高于数据的传输的优先级。The execution of the handover response operation here may at least include generating handover response information, and may also include sending the response information. For example, the above-mentioned MAC CE indicating the handover response is generated, and then packaged and sent in the received uplink grant (UL grant). Preferably, the priority of transmission of such MAC CE is higher than the priority of data transmission.
变形例Modifications
上述实施例的一种实现方式可以是One implementation of the above embodiment may be
步骤一：UE执行小区配置信息，即应用对应于该小区的配置信息。这里UE可以是接收到RRC连接重配置消息之后执行小区配置信息，或者是接收到前面所述的切换命令之后，执行小区配置信息，还可以是其他原因导致UE开始执行这一操作。Step 1: The UE executes the cell configuration information, i.e., applies the configuration information corresponding to the cell. Here, the UE may execute the cell configuration information after receiving the RRC connection reconfiguration message, or after receiving the handover command mentioned above, or other reasons may cause the UE to start executing this operation.
步骤二：UE在执行小区配置信息的过程中，判断在配置信息中是否携带了同步指示信息：Step 2: During the process of executing the cell configuration information, the UE determines whether the configuration information carries synchronization indication information:
如果携带了同步指示信息，那么UE还可以进一步判断执行该小区 配置信息这一操作是否是由LTM触发的：If the synchronization indication information is carried, the UE can further determine the execution of the cell Whether this configuration information operation is triggered by LTM:
-如果执行小区配置信息这一操作是由LTM触发的，或者是由于LTE的执行而导致的执行小区配置信息，那么UE的RRC层向下层，例如MAC层或者是PHY层，指示生成切换响应信息或者是执行切换响应操作。优选的，UE可以在成功完成同步之后，指示下层生成切换响应信息，或者是执行切换响应操作。-If the operation of executing the cell configuration information is triggered by LTM, or the execution of the cell configuration information is caused by the execution of LTE, then the RRC layer of the UE instructs the lower layer, such as the MAC layer or the PHY layer, to generate the handover response information or to perform the handover response operation. Preferably, the UE can instruct the lower layer to generate the handover response information or to perform the handover response operation after successfully completing the synchronization.
-作为补充，如果执行小区配置信息的这一操作不是由LTM触发的，那么UE不向下层，指示生成切换响应信息。- In addition, if the operation of executing the cell configuration information is not triggered by LTM, the UE does not instruct the lower layer to generate the handover response information.
作为补充，如果配置信息中没有携带同步指示信息，那么UE不执行上述操作。As a supplement, if the configuration information does not carry the synchronization indication information, the UE does not perform the above operation.
实施例2Example 2
在实施例1中所述的“UE成功完成同步”的时刻，可以基于下述操作之一或者多来执行来确定(即下述操作完成时刻可以视为“UE成功完成同步”)：The moment of "UE successfully completes synchronization" described in Embodiment 1 may be determined based on one or more of the following operations (i.e., the moment of completion of the following operations may be regarded as "UE successfully completes synchronization"):
操作一，MAC层成功完成了随机接入过程(Succesfully Complete a Random Access Procedure)；Operation 1: The MAC layer successfully completes the random access procedure (Succesfully Complete a Random Access Procedure);
操作二，停止(stop)切换管理定时器，例如T304，或者是类似于T304一样的定时器，可以是在UE接收到切换命令或者是执行切换操作的时候启动的定时器，或者是运行超时之后可以判定切换(或者同步)发生失败的定时器；Operation 2: stop the handover management timer, such as T304, or a timer similar to T304, which may be a timer started when the UE receives a handover command or performs a handover operation, or a timer that can determine that a handover (or synchronization) fails after a timeout;
操作三，在RRC层之下，例如MAC层，向RRC层指示成功接收到PDCCH传输，优选的，该PDCCH以该UE的C-RNTI为目的地(a PDCCH transmission addressed to C-RNTI)。Operation three, below the RRC layer, such as the MAC layer, indicates to the RRC layer that a PDCCH transmission is successfully received. Preferably, the PDCCH is destined for the C-RNTI of the UE (a PDCCH transmission addressed to C-RNTI).
实施例3Example 3
与实施例1的区别在于切换响应信息可以是携带在一个RRC消息中，这样的消息可以是利用现有的RRC消息，例如MRDC上行信息传输消息ULInformationTransferMRDC，或者是新设计一个LTM响应消息。The difference from Embodiment 1 is that the switching response information may be carried in an RRC message. Such a message may utilize an existing RRC message, such as an MRDC uplink information transfer message ULInformationTransferMRDC, or a newly designed LTM response message.
如果采用ULInformationTransferMRDC消息，可以在该消息中设置一个信元LTM响应，命名为LTM response，那么当执行实施例1中的步 骤三时，在执行上述对应于目标小区的配置信息过程中，UE判断在配置信息中是否携带了同步指示信息，如果携带了同步指示信息，那么可以在ULInformationTransferMRDC消息的内容中设置信元LTM响应(LTM response)，例如取值为1，或者是在该信息中添加该信元LTM响应，并将该消息递交给下层传输。If the ULInformationTransferMRDC message is used, a cell LTM response can be set in the message, named LTM response, so when executing the steps in Example 1 In step three, during the execution of the above-mentioned configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information. If synchronization indication information is carried, a cell LTM response (LTM response) can be set in the content of the ULInformationTransferMRDC message, for example, a value of 1, or the cell LTM response is added to the information, and the message is submitted to the lower layer for transmission.
或者是在执行实施例1中的变形例的步骤二时，当进行到“如果执行小区配置信息这一操作是由LTM触发的，或者是由于LTE的执行而导致的执行小区配置信息，”时，可以在ULInformationTransferMRDC消息设置信元LTM response，例如取值为1，或者是在该信息中添加该信元LTM响应，并将该消息递交给下层传输。Or when executing step 2 of the variant example in Example 1, when proceeding to "If the operation of executing the cell configuration information is triggered by LTM, or the execution of the cell configuration information is caused by the execution of LTE," the LTM response cell can be set in the ULInformationTransferMRDC message, for example, the value is 1, or the LTM response cell is added to the message, and the message is submitted to the lower layer for transmission.
又或者是采用一个用于LTM响应的LTM响应消息。当执行实施例1中的步骤三时，在执行上述对应于目标小区的配置信息过程中，UE判断在配置信息中是否携带了同步指示信息，如果携带了同步指示信息，那么可以将该LTM响应消息递交给下层传输。Alternatively, an LTM response message for LTM response is used. When executing step 3 in embodiment 1, in the process of executing the configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information, and if the synchronization indication information is carried, the LTM response message can be delivered to the lower layer for transmission.
或者是在执行实施例1中的变形例的步骤二时，当进行到“如果执行小区配置信息这一操作是由LTM触发的，或者是由于LTE的执行而导致的执行小区配置信息，”时，将该LTM响应消息递交给下层传输。Or when executing step 2 of the variant example in Example 1, when it comes to "If the operation of executing cell configuration information is triggered by LTM, or the execution of cell configuration information is caused by the execution of LTE," the LTM response message is submitted to the lower layer for transmission.
实施例4Example 4
在实施例3的基础上，可以判断UE执行的小区配置信息是经由SRB3传输的，还是经由SRB1传输的。Based on Example 3, it can be determined whether the cell configuration information executed by the UE is transmitted via SRB3 or SRB1.
具体地，在一种情况下，UE接收到的切换命令中指示的目标小区是SCG的Pscell，或者UE执行的小区配置信息对应的是SCG的配置信息，那么实施例3中所述的RRC消息的传输可以由如下方式进行。Specifically, in one case, the target cell indicated in the handover command received by the UE is the Pscell of the SCG, or the cell configuration information executed by the UE corresponds to the configuration information of the SCG, then the transmission of the RRC message described in Example 3 can be performed in the following manner.
当UE执行的小区配置信息是经由SRB3传输的，例如该小区配置信息携带在RRC重配置信息中，然后该重配置信息经由SRB3由基站发送给UE，那么UE在发送对应的LTM响应消息(或者是携带LTM响应信息的ULInformationTransferMRDC消息)时，需要经由SRB3发送。When the cell configuration information executed by the UE is transmitted via SRB3, for example, the cell configuration information is carried in the RRC reconfiguration information, and then the reconfiguration information is sent by the base station to the UE via SRB3, then when the UE sends the corresponding LTM response message (or the ULInformationTransferMRDC message carrying the LTM response information), it needs to be sent via SRB3.
当UE执行的小区配置信息是经由SRB1传输的，例如该小区配置信息携带在RRC重配置信息中，然后该重配置信息经由SRB1由基站发送给UE，那么UE在发送对应的LTM响应消息(或者是携带LTM响应 信息的ULInformationTransferMRDC消息)时，需要经由SRB1发送。When the cell configuration information executed by the UE is transmitted via SRB1, for example, the cell configuration information is carried in the RRC reconfiguration information, and then the reconfiguration information is sent by the base station to the UE via SRB1, then the UE sends the corresponding LTM response message (or carries the LTM response When sending ULInformationTransferMRDC message of information, it needs to be sent via SRB1.
作为补充，在另外一种情况下，UE接收到的切换命令中指示的目标小区是MCG的Pcell，或者UE执行的小区配置信息对应的是MCG的配置信息，那么实施例3中所述的RRC消息的，需要经由SRB1发送。In addition, in another case, the target cell indicated in the handover command received by the UE is the Pcell of the MCG, or the cell configuration information executed by the UE corresponds to the configuration information of the MCG, then the RRC message described in Example 3 needs to be sent via SRB1.
实施例5Example 5
在前述实施例的基础上，在一种情况下，UE在执行的小区配置信息中检测到无法按照该配置信息进行配置实施，或者是不能应用该配置信息(Inability to comply the configuration)，那么根据该配置信息对应是MCG还是SCG，可以有如下处理：Based on the above embodiment, in one case, the UE detects in the executed cell configuration information that it cannot be configured according to the configuration information, or cannot apply the configuration information (Inability to comply with the configuration). Then, according to whether the configuration information corresponds to MCG or SCG, the following processing can be performed:
当UE执行的小区配置是属于SCG的小区配置，那么在无法执行或者应用该配置信息时，UE可以启动SCG失败信息报告流程，向基站发送SCG失败的相关信息；可选的，UE可以在MCG的传输没有被暂停的情况下，启动SCG失败信息流程(initiate SCG failure Inforamtion procedure)，向基站/网络侧报告SCG失败的相关信息，以及可选的，停止或者中止LTM相关的流程或者操作；When the cell configuration executed by the UE belongs to the cell configuration of the SCG, then when the configuration information cannot be executed or applied, the UE can initiate the SCG failure information reporting process and send relevant information about the SCG failure to the base station; optionally, the UE can initiate the SCG failure information process (initiate SCG failure Inforamtion procedure) without suspending the transmission of the MCG, report relevant information about the SCG failure to the base station/network side, and optionally stop or terminate the LTM-related processes or operations;
当UE执行的小区配置是属于MCG的小区配置，那么在无法执行或者应用该配置信息时，UE可以启动RRC连接重建立流程，向基站/网络侧发送RRC连接重建请求。When the cell configuration executed by the UE belongs to the cell configuration of the MCG, if the configuration information cannot be executed or applied, the UE can start the RRC connection re-establishment process and send an RRC connection re-establishment request to the base station/network side.
本实施例也可以单独使用，用于无法执行的小区配置信息时重新恢复连接。This embodiment can also be used alone to restore the connection when the cell configuration information cannot be executed.
图2是示出了根据本公开一个实施例的用户设备UE20的框图。如图2所示，该用户设备UE20包括处理器201和存储器202。处理器201例如可以包括微处理器、微控制器、嵌入式处理器等。存储器202例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器202上存储有程序指令。该指令在由处理器201运行时，可以执行本公开详细描述的由用户设备执行的上述方法(例如图1中所示的方法)。 FIG2 is a block diagram showing a user equipment UE20 according to an embodiment of the present disclosure. As shown in FIG2 , the user equipment UE20 includes a processor 201 and a memory 202. The processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 202 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memories, etc. Program instructions are stored on the memory 202. When the instructions are executed by the processor 201, the above-mentioned method performed by the user equipment described in detail in the present disclosure (such as the method shown in FIG1 ) may be executed.
运行在根据本公开的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本公开的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器***中。The program running on the device according to the present disclosure may be a program that enables a computer to implement the functions of the embodiments of the present disclosure by controlling a central processing unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory systems.
用于实现本公开各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机***读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机***”可以是嵌入在该设备中的计算机***，可以包括操作***或硬件(如***设备)。“计算机可读记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。The program for realizing the functions of each embodiment of the present disclosure can be recorded on a computer-readable recording medium. The corresponding functions can be realized by making a computer system read the program recorded on the recording medium and executing these programs. The so-called "computer system" herein can be a computer system embedded in the device, and can include an operating system or hardware (such as a peripheral device). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本公开的一个或多个实施例也可以使用这些新的集成电路技术来实现。The various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., monolithic or multi-chip integrated circuits). Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices. The general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine. The above circuits may be digital circuits or analog circuits. In the case where new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.
此外，本公开并不局限于上述实施例。尽管已经描述了所述实施例的各种示例，但本公开并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作UE设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。In addition, the present disclosure is not limited to the above-mentioned embodiments. Although various examples of the embodiments have been described, the present disclosure is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors can be used as UE devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.
如上，已经参考附图对本公开的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本公开也包括不偏离本公开主旨的任何设计改动。另外，可以在权利要求的范围内对本公开进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在 本公开的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。 As mentioned above, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above embodiments, and the present disclosure also includes any design changes that do not deviate from the main purpose of the present disclosure. In addition, various changes can be made to the present disclosure within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included. In addition, the components having the same effects described in the above embodiments may be substituted for each other.

Claims (10)

  1. 一种由用户设备执行的方法，包括如下步骤：A method performed by a user equipment comprises the following steps:
    用户设备UE接收到切换命令，在该切换命令中指示了目标小区的信息；The user equipment UE receives a handover command, in which information of a target cell is indicated;
    UE的下层向无线资源控制RRC层指示接收到上述切换命令，RRC层基于上述信息来执行对应于目标小区的配置信息；The lower layer of the UE indicates to the radio resource control RRC layer that the handover command has been received, and the RRC layer executes the configuration information corresponding to the target cell based on the information;
    在执行对应于目标小区的配置信息的过程中，UE判断在该配置信息中是否携带了同步指示信息，In the process of executing the configuration information corresponding to the target cell, the UE determines whether the configuration information carries synchronization indication information.
    如果携带了同步指示信息，那么RRC层向下层指示生成切换响应信息或者是执行切换响应操作。If the synchronization indication information is carried, the RRC layer instructs the lower layer to generate switching response information or perform a switching response operation.
  2. 根据权利要求1所述的由用户设备执行的方法，其中，还包括如下步骤：The method performed by the user equipment according to claim 1, further comprising the steps of:
    如果携带了同步指示信息，那么UE进一步判断执行对应于目标小区的配置信息这一操作是否是由LTM触发的，其中，该LTM是基于层1或者层2命令触发的小区移动性，If the synchronization indication information is carried, the UE further determines whether the operation of executing the configuration information corresponding to the target cell is triggered by LTM, wherein the LTM is based on cell mobility triggered by layer 1 or layer 2 commands.
    如果上述操作是由LTM触发的，那么RRC层向下层指示生成切换响应信息或者是执行切换响应操作，If the above operation is triggered by LTM, the RRC layer instructs the lower layer to generate handover response information or perform handover response operation.
    如果上述操作不是由LTM触发的，那么UE不向下层指示生成切换响应信息。If the above operation is not triggered by LTM, the UE does not instruct the lower layer to generate the handover response information.
  3. 根据权利要求1或2所述的由用户设备执行的方法，其中，The method performed by a user equipment according to claim 1 or 2, wherein:
    在成功完成同步之后，UE指示下层生成切换响应信息或者是执行切换响应操作。After successfully completing the synchronization, the UE instructs the lower layer to generate handover response information or perform a handover response operation.
  4. 根据权利要求3所述的由用户设备执行的方法，其中，The method performed by a user equipment according to claim 3, wherein:
    上述切换响应信息由媒体接入控制层控制元素MAC CE指示切换响应。The above-mentioned switching response information is indicated by the media access control layer control element MAC CE.
  5. 根据权利要求3所述的由用户设备执行的方法，其中，The method performed by a user equipment according to claim 3, wherein:
    上述执行切换响应操作至少包括生成上述切换响应信息。The performing of the switching response operation at least includes generating the switching response information.
  6. 根据权利要求3所述的由用户设备执行的方法，其中，The method performed by a user equipment according to claim 3, wherein:
    在下述任一种操作完成时，确定UE成功完成同步，上述操作为：When any of the following operations is completed, it is determined that the UE has successfully completed synchronization, the operations being:
    MAC层成功完成了随机接入过程； The MAC layer successfully completes the random access process;
    停止切换管理定时器；Stop the switch management timer;
    RRC层的下层向RRC层指示成功接收到物理下行控制信道PDCCH传输。The lower layers of the RRC layer indicate to the RRC layer that a physical downlink control channel PDCCH transmission has been successfully received.
  7. 根据权利要求3所述的由用户设备执行的方法，其中，The method performed by a user equipment according to claim 3, wherein:
    上述切换响应信息携带在RRC消息中。The above handover response information is carried in the RRC message.
  8. 根据权利要求7所述的由用户设备执行的方法，其中，还包括如下步骤：The method performed by the user equipment according to claim 7, further comprising the following steps:
    判断UE执行的小区配置信息是经由信令无线承载SRB3传输的，还是经由SRB1传输的。It is determined whether the cell configuration information executed by the UE is transmitted via the signaling radio bearer SRB3 or SRB1.
  9. 根据权利要求8所述的由用户设备执行的方法，其中，还包括如下步骤：The method performed by the user equipment according to claim 8, further comprising the steps of:
    如果UE在执行的小区配置信息中检测到无法按照该配置信息进行配置实施，那么进一步判断该配置信息对应是主小区组MCG还是辅小区组SCG。If the UE detects in the executed cell configuration information that the configuration cannot be implemented according to the configuration information, it further determines whether the configuration information corresponds to the main cell group MCG or the secondary cell group SCG.
  10. 一种用户设备，包括：A user equipment, comprising:
    处理器；以及Processor; and
    存储器，存储有指令；A memory storing instructions;
    其中，上述指令在由上述处理器运行时，使上述用户设备执行根据权利要求1至9中任一项所述的方法。 When the instructions are executed by the processor, the user equipment is caused to execute the method according to any one of claims 1 to 9.
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