WO2012019549A1 - 一种主小区更换的小区配置方法及装置 - Google Patents

一种主小区更换的小区配置方法及装置 Download PDF

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Publication number
WO2012019549A1
WO2012019549A1 PCT/CN2011/078266 CN2011078266W WO2012019549A1 WO 2012019549 A1 WO2012019549 A1 WO 2012019549A1 CN 2011078266 W CN2011078266 W CN 2011078266W WO 2012019549 A1 WO2012019549 A1 WO 2012019549A1
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Prior art keywords
cell
configuration information
primary cell
command
primary
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PCT/CN2011/078266
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English (en)
French (fr)
Inventor
梁靖
李海涛
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电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to JP2013501619A priority Critical patent/JP5520416B2/ja
Priority to US13/638,433 priority patent/US20130165124A1/en
Priority to KR1020127025223A priority patent/KR101437535B1/ko
Priority to EP11816107.4A priority patent/EP2605590B1/en
Publication of WO2012019549A1 publication Critical patent/WO2012019549A1/zh

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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
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • 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
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H04W36/28—Reselection being triggered by specific parameters by agreed or negotiated communication parameters involving a plurality of connections, e.g. multi-call or multi-bearer connections

Definitions

  • the invention relates to a cell configuration method and device for replacing a primary cell.
  • the present application claims to be submitted to the Chinese Patent Office on August 11, 2010, with the application number of 201010251151.6, and the Chinese patent entitled “a cell configuration method and device for replacement of a primary cell” Priority of the application, the entire contents of which are incorporated herein by reference.
  • the present invention relates to the field of communications, and in particular, to a cell configuration method and apparatus for primary cell replacement. Background technique
  • LTE Long Term Evolution
  • LTE-A upgraded long-term evolution
  • the peak rate of the system is greatly improved compared to LTE, which requires downlink lGbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be achieved. Therefore, the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing Carrier Aggregation (CA) technology, which is to aggregate multiple consecutive or discontinuous carriers under the same eNB (Evolved Base Station).
  • the user equipment (UE) is also served to provide the required rate.
  • These aggregated carriers are also referred to as component carriers (CC).
  • Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated.
  • a primary cell (Pcell) and a secondary cell (Scell) are defined for a plurality of cells aggregated by the UE, and respectively correspond to a primary carrier cell and a secondary carrier cell currently aggregated by the UE.
  • the LTE system is a single-carrier system, and only involves the configuration of one target cell when switching.
  • the LTE-A system involves handover of multiple cells of the primary cell and the secondary cell, and cannot directly apply the handover process of the LTE system, and there is currently no effective solution for the handover process in the LTE-A system.
  • Summary of the invention The embodiment of the invention provides a cell configuration method and device for replacing a primary cell, which is used to implement replacement of a primary cell in a carrier aggregation system.
  • a method for configuring a cell for replacing a primary cell which is applied to the UE side, includes the following steps: The user terminal UE obtains configuration information of the primary cell and the secondary cell by using a primary cell replacement command;
  • the UE obtains the configuration information of the target primary cell and the target secondary cell by using the obtained configuration information of the primary cell and the secondary cell, and the configuration information of the target primary cell and the target secondary cell, and switches from the source primary cell and the source secondary cell to the target primary.
  • Cell and target secondary cell are examples of the target primary cell and the target secondary cell.
  • a cell configuration method for a primary cell replacement is applied to a base station side, and is used to implement an indication of a cell update by a UE, including the following steps:
  • the base station generates a primary cell replacement command including configuration information of the primary cell
  • the base station sends a primary cell replacement command to the user terminal UE, instructing the UE to obtain the target primary cell and the target by using the configuration information of the primary cell and the secondary cell carried in the primary cell replacement command, together with the configuration information of all the source primary cells and the source secondary cell that are reserved.
  • the configuration information of the secondary cell is switched from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • a user equipment including:
  • An interface module configured to obtain configuration information of a primary cell and a secondary cell by using a primary cell replacement command
  • a configuration module configured to combine, by using configuration information of the primary cell and the secondary cell, configuration information of all source primary cells and source secondary cells that are reserved And acquiring configuration information of the target primary cell and the target secondary cell, and switching from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • a base station comprising:
  • control module configured to generate a primary cell replacement command including configuration information of the primary cell
  • an interface module configured to send a primary cell replacement command to the user terminal UE, to instruct the UE to configure the primary cell and the secondary cell that are carried in the primary cell replacement command
  • the information is combined with the configuration information of all the source primary cells and the source secondary cells that are reserved, and the configuration information of the target primary cell and the target secondary cell is obtained, and the source primary cell and the source secondary cell are switched to the target primary cell and the target secondary cell.
  • the UE when receiving the primary cell replacement command, retains the configuration information of the source primary cell and the source secondary cell, does not immediately delete the configuration information of the source primary cell and the source secondary cell, and then performs the primary cell.
  • the configuration of the reserved primary cell is updated according to the configuration information of the primary cell carried in the primary cell replacement command, and the primary primary cell is switched from the primary primary cell to the target primary cell, thereby implementing handover of the primary cell in the LTE-A system.
  • FIG. 1 is a structural diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a main structural diagram of a UE in an embodiment of the present invention.
  • FIG. 3 is a detailed structural diagram of a UE in an embodiment of the present invention.
  • FIG. 4 is a structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method for cell handover on a UE side according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a method for cell handover on a base station side according to an embodiment of the present invention
  • FIG. 7 is a flow chart of a cell configuration method for a primary cell replacement when a primary cell change command includes a delete command and an add command, and the delete command and the add command include the same cell number in the embodiment of the present invention
  • FIG. 8 is a flow chart of a cell configuration method for a primary cell to be replaced when a primary cell change command includes a delete command and an add command, and the delete command and the add command include different cell numbers in the embodiment of the present invention
  • FIG. 9 is a flowchart of a cell configuration method for replacing a primary cell when a primary cell change command includes a change command, and a correspondence between a cell and a cell number is unchanged according to an embodiment of the present disclosure
  • FIG. 10 is a flowchart of a cell configuration method for replacing a primary cell when a primary cell replacement command includes a change command, and a correspondence between a primary cell and a cell number is unchanged according to an embodiment of the present disclosure
  • FIG. 11 is a flowchart of a cell configuration method for performing primary cell replacement across a base station according to an embodiment of the present invention.
  • the UE when receiving the primary cell replacement command, retains the configuration information of the source primary cell and the source secondary cell, does not immediately delete the configuration information of the source primary cell and the source secondary cell, and then performs the primary cell.
  • the configuration of the primary source cell is updated according to the configuration information of the primary cell carried in the primary cell replacement command, and the primary cell is switched from the source primary cell to the target primary cell, thereby implementing handover of the primary cell in the LTE-A system.
  • the communication system in this embodiment includes a base station and a UE.
  • the base station can be an eNB or a Node B or the like.
  • a base station configured to generate a primary cell replacement command including configuration information of the primary cell, and send a primary cell replacement command to the UE, instructing the UE to combine all the reserved information of the primary cell and the secondary cell carried in the primary d and the area replacement command
  • the configuration information of the source primary cell and the source secondary cell acquires configuration information of the target primary cell and the target secondary cell, and switches from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • the primary cell change command has multiple forms, and the primary cell and/or the secondary cell can be switched in multiple manners, for example, the primary cell replacement command includes a delete command (release or remove) and an add command (add); the base station sends the master to the UE.
  • the cell replacement command instructs the UE to delete the cell number included in the deletion instruction and the configuration information corresponding to the cell number, and the configuration information corresponding to the cell number included in the increase instruction and the cell number carried in the primary cell change command.
  • the deletion instruction and the addition instruction include the same cell number
  • the base station sends a primary cell replacement command to the UE, instructing the UE to delete the cell number and the configuration information corresponding to the cell number according to the deletion instruction, and then increase the cell according to the increase instruction.
  • the configuration information corresponding to the cell number carried in the primary cell replacement command includes a change command; the base station sends a primary cell change command to the UE, instructs the UE to delete the configuration information corresponding to the cell number included in the change command, and increases the configuration information corresponding to the cell number carried in the primary cell change command.
  • the configuration information of the primary cell and the secondary cell carried by the primary cell replacement command is incremental configuration information or complete configuration information with respect to configuration information of the reserved source primary cell.
  • the configuration information of the primary cell carried in the primary cell replacement command is the incremental configuration information or the complete configuration information of the configuration information of the reserved primary primary cell; the configuration information of the secondary cell carried by the primary cell replacement command is relative to the reserved Incremental configuration information or full configuration information of the configuration information of the source secondary cell.
  • the above delete command, add command and change command can be used only for the replacement of the secondary cell.
  • the primary cell replacement command may only carry the target primary cell. The cell number and configuration information do not need to carry the corresponding delete command, add command and change command.
  • the UE directly performs the configuration of the target primary cell according to the primary cell replacement command, and then automatically deletes the configuration information of the primary primary cell (updated configuration information).
  • the primary cell replacement command is a reconfiguration message (such as a radio resource control (RRC) reconfiguration message); or, the primary cell replacement command is a handover command.
  • RRC radio resource control
  • the cell number may be UE level, that is, different UEs corresponding to the same 'zone may have different cell numbers. At present, the number of cells that the UE can aggregate is 5, and the cell number is represented by 3 bits.
  • Full configuration means that the base station sends the complete configuration information to the UE through dedicated signaling.
  • the UE directly uses the configuration.
  • Incremental configuration means that both the UE and the base station keep the same old configuration, and then the base station will have different parameters from the old configuration.
  • the UE sends the UE to the UE through dedicated signaling.
  • the UE directly uses the new configuration sent by the base station.
  • the old configuration or the old configuration (and corresponding function) is used.
  • the incremental configuration scheme the size of dedicated signaling can be reduced and the signaling overhead can be reduced.
  • the configuration information of the cell as the primary cell includes at least one of the following parameters: physical uplink control channel (PUCCH) related parameters, such as SR (scheduling request) resources; SPS (semi-persistent scheduling) related parameters, such as SPS resource configuration; periodic CQI (channel quality indication) related parameters; random access related parameters, such as random access preamble answer allocation; radio link failure related parameters, such as the length of the relevant counter and timer; some parameters in the system information, such as the system information period , system information receiving window size and TAI (location area number), etc.; the configuration information of the primary cell may also include other parameters, not listed here.
  • PUCCH physical uplink control channel
  • SPS scheduling scheduling
  • periodic CQI channel quality indication
  • random access related parameters such as random access preamble answer allocation
  • radio link failure related parameters such as the length of the relevant counter and timer
  • some parameters in the system information such as the system information period , system information receiving window size and TAI (location area number), etc.
  • TAI
  • the configuration information of the cell as the secondary cell includes: a deactivation timer or the like.
  • the configuration information of the secondary cell may also include other parameters, which are not listed here.
  • the UE when receiving the primary cell replacement command, retains the configuration information of the source primary cell and the source secondary cell, and does not delete the configuration immediately, and then the UE combines the reserved information of the primary cell and the secondary cell carried in the primary cell replacement command.
  • the configuration information of the source primary cell and the source secondary cell acquires configuration information of the target primary cell and the target secondary cell, and switches from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • the primary cell replacement command has multiple forms, and the primary and/or secondary cells can be switched in multiple ways.
  • the primary cell change command includes a delete command and an add command; the UE deletes the cell number included in the delete command and the configuration information corresponding to the cell number, and adds the cell number included in the increase command and the cell carried by the primary cell change command.
  • the configuration information corresponding to the number Specifically, when the deletion instruction and the addition instruction include the same cell number, the UE first deletes the cell number and the configuration information corresponding to the cell number according to the deletion instruction, and then adds the cell number and the cell carried by the primary cell replacement command according to the increase instruction.
  • the configuration information corresponding to the number is a delete command and an add command; the UE deletes the cell number included in the delete command and the configuration information corresponding to the cell number, and adds the cell number included in the increase command and the cell carried by the primary cell change command.
  • the primary cell change command includes a change command; the UE deletes the configuration information corresponding to the cell number included in the change command, and adds configuration information corresponding to the cell number carried by the primary cell change command. After updating the configuration information, the UE reads the system information of the target cell to complete the handover.
  • the above delete command, add command and change command can be used only for the replacement of the secondary cell.
  • the primary cell replacement command may only carry the cell number and configuration information of the target primary cell, and does not need to carry the corresponding deletion instruction, the addition instruction, and the change instruction.
  • the UE directly performs the configuration of the target primary cell according to the primary cell replacement command, and then automatically deletes the configuration information of the source primary cell (updated configuration information).
  • the handover of the primary cell may be an intra-base station handover or a handover across a base station. If it is a handover within the base station, it is the same base station that decides to switch and generate the primary cell change command. If the handover is performed between the base stations, the source base station determines the handover, and sends a handover request to the target base station, where the request message carries configuration information of the active primary cell and/or the source secondary cell, and the target base station generates a primary cell replacement command, and Transmitted to the UE by the source base station. In the case of cross-base station handover, the UE reads the system information of the target cell to establish a connection with the target base station, and completes the handover.
  • the UE in this embodiment includes: an interface module 201 and a configuration module 202.
  • Interface module 201 can include devices such as transceivers.
  • Configuration module 202 can be implemented by a variety of executable devices.
  • the interface module 201 is configured to receive and parse the primary cell replacement command, and obtain configuration information of the primary cell and the secondary cell that are carried by the primary cell replacement command.
  • the interface module 201 is also used to read system information of the target cell and the like. Interface module 201 can also receive and transmit other messages.
  • the configuration module 202 is configured to be connected to the interface module 201, and configured to obtain the target primary cell and the target secondary by using the configuration information of the primary cell and the secondary secondary cell that are carried in the primary cell replacement command and the configuration information of all the source primary cells and the secondary secondary cell that are reserved. Cell configuration information, switching from the source primary cell and the source secondary cell Go to the target primary cell and the target secondary cell.
  • the configuration module 202 deletes the cell number included in the delete command and the configuration information corresponding to the cell number, and adds the cell number included in the increase command to the cell number carried in the primary cell change command. Configuration information.
  • the configuration module 202 first deletes the cell number and the configuration information corresponding to the cell number according to the deletion instruction, and then adds the cell number and the primary cell replacement command according to the increase instruction. Configuration information corresponding to the cell number.
  • the configuration module 202 deletes the configuration information corresponding to the cell number included in the change command, and increases the configuration information corresponding to the cell number carried in the primary cell change command.
  • the UE also includes a storage module 203 that can be implemented by various storage media, as shown in FIG.
  • the storage module 203 is configured to save configuration information of the source primary cell and the source secondary cell, and the like.
  • the base station in this embodiment includes: a control module 401 and an interface module 402.
  • Control module 401 can be implemented by a variety of executable devices.
  • Interface module 402 can be implemented by devices such as a transmitter and a receiver.
  • the control module 401 is configured to generate a primary cell replacement command including configuration information of the primary cell. Control module 401 is also used to make handover decisions.
  • the interface module 402 is configured to send a primary cell change command to the UE, and instruct the UE to obtain the target primary cell by using the configuration information of the primary cell and the secondary cell that are carried in the primary cell replacement command and the configuration information of all the source primary cells and the source secondary cell that are reserved. And the configuration information of the target secondary cell is switched from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • the primary cell change command generated by the control module 401 includes a delete command and an add command
  • the interface module 402 sends a primary cell change command to the UE, instructing the UE to delete the cell number included in the delete command and the configuration information corresponding to the cell number, and adding an increase command.
  • the included cell number and the configuration information corresponding to the cell number carried in the primary cell change command when the delete command and the add command include the same cell number, the interface module 402 sends a primary cell change command to the UE, instructing the UE to delete the cell number and the configuration information corresponding to the cell number according to the delete command, and then increase according to the increase instruction.
  • the cell number and the configuration information corresponding to the cell number carried in the primary cell replacement command The primary cell replacement command generated by the control module 401 includes
  • the interface module 402 sends a primary cell change command to the UE, instructs the UE to delete the configuration information corresponding to the cell number included in the change command, and increases the configuration information corresponding to the cell number carried in the primary cell change command.
  • the interface module 402 is also used to send and receive handover requests.
  • the base station includes all functions as a source base station and as a target base station, but only plays different roles in different scenarios.
  • the internal structure and functions of the communication system, the base station, and the UE have been described above.
  • the implementation process of the cell handover is described below.
  • the method for cell handover on the UE side in this embodiment is as follows:
  • Step 501 When receiving the primary cell change command, the UE reserves configuration information of the source primary cell and the source secondary cell.
  • Step 502 The UE obtains the configuration information of the target primary cell and the target secondary cell by using the configuration information of the primary cell and the secondary cell that are carried in the primary cell replacement command, and the configuration information of the source primary cell and the secondary secondary cell. The cell and the source secondary cell are handed over to the target primary cell and the target secondary cell.
  • the method for cell handover on the base station side in this embodiment is as follows:
  • Step 601 The base station generates a primary cell replacement command including configuration information of the primary cell.
  • Step 602 The base station sends a primary cell replacement command to the UE, and instructs the UE to obtain the target primary cell by using the configuration information of the primary cell and the secondary cell that are carried in the primary cell replacement command and the configuration information of all the source primary cells and the source secondary cell that are reserved.
  • the configuration information of the target secondary cell is switched from the source primary cell and the source secondary cell to the target primary cell and the target secondary cell.
  • the primary cell replacement command has multiple configurations, and there are multiple ways to implement cell handover, and the cell handover involves intra-base station handover and cross-base station handover.
  • the implementation process is described in detail below through several embodiments.
  • the primary cell replacement command includes a delete command and an add command
  • the cell configuration method for the primary cell replacement is as follows:
  • the cell under the base station includes the cell 1, the cell 2, the cell 3, and the cell 4.
  • the cell aggregated by the UE includes the cell 1, the cell 2, and the cell 3.
  • the corresponding cell numbers include index1, index2, and index3.
  • the primary cell is cell 1.
  • the primary cell is cell 2, and the secondary cell includes cell 1 and cell 3.
  • the base station can perform the determination by using the measurement report reported by the UE.
  • Step 702 The base station generates a primary cell change command including a delete command and an add command, and the delete command and the add command include index2.
  • the addition instruction in the primary cell replacement command further includes configuration information of the target cell corresponding to index2.
  • the primary cell replacement command further includes configuration information of the target primary cell corresponding to index1 and index 1.
  • the UE may determine which number corresponds to the primary cell according to the configuration information.
  • the configuration information of the primary cell and the secondary cell may be incremental configuration information or full configuration information of the configuration information of the source primary cell; or the configuration information of the target cell corresponding to the index1 is incremental configuration with respect to the configuration information of the source primary cell.
  • Information or full configuration information, the configuration information of the target cell corresponding to index2 is incremental configuration information or full configuration information with respect to configuration information of the source secondary cell (cell 2 and/or cell 3).
  • Step 703 The base station sends a primary cell replacement command to the UE.
  • Step 704 The UE receives the primary cell change command and reserves configuration information of the source primary cell and the source secondary cell.
  • Step 705 The UE deletes the configuration information corresponding to index2 according to the deletion instruction. Equivalent to deleting the configuration information of cell 2 (source secondary cell).
  • Step 706 The UE updates the configuration information corresponding to the index2 according to the adding instruction. Equivalent to increasing the configuration information of cell 2 (target primary cell). At the same time, the configuration information of the target primary cell corresponding to index1 is updated. And delete the configuration information of the source primary cell (updated configuration information).
  • the target secondary cell and the source secondary cell are the same cell, and the UE inherits the reserved configuration information.
  • Step 707 The UE reads system information corresponding to index1 (cell 2) and index2 (cell 1). The handover of the cell is completed.
  • the cell number corresponding to the primary cell before and after the handover is unchanged, but the correspondence between the cell and the cell number is changed.
  • the secondary cell may also be handed over from the cell 2 to the cell 4, as long as the configuration information of the cell 4 is carried in the add command.
  • the primary cell replacement command includes a delete command and an add command
  • the cell configuration method for the primary cell replacement is as follows:
  • the cell under the base station includes cell 1, cell 2, cell 3, and cell 4.
  • the cell aggregated by the UE includes cell 1, cell 2, and cell 3, and the corresponding cell numbers include index1, index2, and index3.
  • the primary cell is cell 1. After the handover, the primary cell is cell 2, and the secondary cell includes cell 3 and cell 4 (index4).
  • Step 801 The base station decides that the primary cell of the UE needs to handover to the cell 2, and the cell 2 in the secondary cell needs to switch to the cell 4.
  • Step 802 The base station generates a primary cell change command including a delete command and an add command, and the delete command includes index2, and the add command includes index4 and configuration information corresponding to the two.
  • the flag i n dex2 in the instruction is added to correspond to the target primary cell
  • the index4 corresponds to the target secondary cell.
  • deleting index2 and increasing index4 is equivalent to switching from cell 2 corresponding to index2 to cell 4 corresponding to index4. Since index2 corresponds to the secondary cell before switching, index4 is switched.
  • Corresponding is also a secondary cell; or the carried configuration information can be used to know which cell is the primary cell and which cell is the secondary cell.
  • the addition instruction in the primary cell change command further includes configuration information of the target cell corresponding to i n d ex 4 .
  • the primary cell replacement command further includes configuration information of the target primary cell corresponding to index2 and index2. Corresponding to switching from cell 1 corresponding to index1 to cell 2 corresponding to index2.
  • Step 803 The base station sends a primary cell replacement command to the UE.
  • Step 804 The UE receives the primary cell change command and reserves configuration information of the source primary cell and the source secondary cell.
  • Step 805 The UE deletes the configuration information corresponding to index2 according to the deletion instruction. Equivalent to deleting the configuration information of cell 2 (source secondary cell).
  • Step 806 The UE updates the configuration information corresponding to index4 according to the adding instruction. Equivalent to increasing small Configuration information for zone 4 (target secondary cell). This step can be interchanged with the order of execution of step 805. At the same time, the configuration information of the target primary cell corresponding to index2 is updated. And deleting the configuration information of the source primary cell (updated configuration information).
  • the UE inherits the reserved configuration information.
  • Step 807 The UE reads system information corresponding to index2 (cell 2) and index4 (cell 4). The handover of the cell is completed.
  • the cell number corresponding to the primary cell changes before and after the handover, but the correspondence between the cell and the cell number remains unchanged.
  • the secondary cell can be switched from cell 2 to cell 1.
  • the method shown in FIG. 8 can also be used to change index4 to index1 and carry the configuration information corresponding to index1.
  • the cell configuration method for the primary cell replacement is as follows:
  • the cell under the base station includes cell 1, cell 2, cell 3, and cell 4.
  • the cell aggregated by the UE includes cell 1, cell 2, and cell 3, and the corresponding cell numbers include index1, index2, and index3.
  • the primary cell is cell 1. After the handover, the primary cell is cell 2, and the secondary cell includes cell 3 and cell 4 (index4).
  • Step 901 The base station decides that the primary cell of the UE needs to handover to the cell 2, and the cell 2 in the secondary cell needs to switch to the cell 4.
  • Step 902 The base station generates a primary cell change command including a change instruction, and the change instruction includes configuration information corresponding to index1, index2, and index4.
  • Step 903 The base station sends a primary cell replacement command to the UE.
  • Step 904 The UE receives the primary cell change command and reserves configuration information of the source primary cell and the source secondary cell.
  • Step 905 The UE deletes the configuration information corresponding to index2 according to the change instruction. Equivalent to deleting the configuration information of cell 2 (source secondary cell). Wherein, since the UE does not have the configuration information corresponding to index4, it is not necessary to perform the deletion operation on index4.
  • Step 906 The UE updates the configuration information corresponding to index4 according to the change instruction. Equivalent to increasing small Configuration information for zone 4 (target secondary cell). At the same time, the configuration information of the target primary cell corresponding to index2 is updated. And deleting the configuration information of the source primary cell (updated configuration information).
  • This step can be interchanged with the order of execution of step 905.
  • Step 905 and step 906 may also be combined, for example, the change instruction includes configuration information corresponding to index2 and index4.
  • the UE updates the local configuration information that the index4 is empty by using the configuration information (configuration information of the target secondary cell) corresponding to the index4, which is equivalent to adding the cell 4 as the secondary cell.
  • the UE updates the local configuration information about the index1 by using the configuration information of the target primary cell corresponding to the index2, which is equivalent to the primary cell switching from the cell 1 to the cell 2, and then the UE automatically deletes the original configuration information of the cell 1 and the cell 2 (updated) Configuration information).
  • the UE inherits the reserved configuration information.
  • Step 907 The UE reads system information corresponding to index2 (cell 2) and index4 (cell 4). The handover of the cell is completed.
  • the cell number corresponding to the primary cell changes before and after the handover, but the correspondence between the cell and the cell number remains unchanged.
  • the secondary cell can be switched from cell 2 to cell 1.
  • the method shown in FIG. 9 can also be used to change index4 to index1 and carry the configuration information corresponding to index1.
  • the cell configuration method for the primary cell replacement is as follows:
  • the cell under the base station includes cell 1, cell 2, cell 3, and cell 4.
  • the cell aggregated by the UE includes cell 1, cell 2, and cell 3, and the corresponding cell numbers include index1, index2, and index3.
  • the primary cell is cell 1. After the handover, the primary cell is cell 2, and the secondary cell includes cell 3 and cell 4 (index4).
  • Step 1001 The base station decides that the primary cell of the UE needs to handover to the cell 2, and the cell 2 in the secondary cell needs to switch to the cell 4.
  • Step 1002 The base station generates a primary cell change command including a change command, and the change command includes configuration information corresponding to index2 (cell 4). And the primary cell replacement command further includes configuration information corresponding to index1 (cell 2) and index1 (cell 2).
  • the cell number corresponding to the primary cell is unchanged, and the cell number corresponding to the secondary cell may also be unchanged before and after the handover.
  • Step 1003 The base station sends a primary cell replacement command to the UE.
  • Step 1004 The UE receives the primary cell change command and reserves configuration information of the source primary cell and the source secondary cell.
  • Step 1005 The UE deletes the configuration information corresponding to index2 according to the change instruction. It is equivalent to deleting the configuration information of cell 2 (source secondary cell).
  • Step 1006 The UE updates the configuration information corresponding to index2 according to the change instruction. It is equivalent to increasing the configuration information of cell 4 (target secondary cell).
  • the UE updates the local configuration information about the cell 1 by using the configuration information of the target primary cell corresponding to the index1 (cell 2), which is equivalent to the primary cell switching from the cell 1 to the cell 2, and then the UE automatically deletes the original configuration of the cell 1 and the cell 2.
  • Information updated configuration information).
  • This step can be interchanged with the order of execution of step 1005.
  • Step 1005 and step 1006 may also be combined, for example, the change instruction includes configuration information corresponding to index1 and index2.
  • the UE updates the configuration information corresponding to the reserved index1 (cell 1) by using the configuration information corresponding to index1, which is equivalent to deleting the cell 1 and adding the configuration of the cell 2, and realizing the handover of the primary cell from the cell 1 to the cell 2.
  • the UE updates the configuration information corresponding to the reserved index2 by using the configuration information corresponding to the index2, which is equivalent to deleting the cell 2 and adding the configuration of the cell 4, and realizing the handover of the secondary cell from the cell 2 to the cell 4.
  • the UE inherits the reserved configuration information.
  • Step 1007 The UE reads system information corresponding to index1 (cell 2) and index2 (cell 4). The handover of the cell is completed.
  • the cell number corresponding to the primary cell before and after the handover is unchanged, but the correspondence between the cell and the cell number changes.
  • the secondary cell can be switched from the cell 2 to the cell 1 by using the method shown in FIG. 10, and the configuration information of the carried cell 4 can be changed to carry the configuration information of the cell 1.
  • the cell configuration method for performing primary cell replacement across a base station in this embodiment is as follows: For example, the cell under the source base station includes cell 1, cell 2, and cell 3. The cell under the target base station includes cell 4, cell 5, and cell 6. The cell aggregated by the UE includes cell 1, cell 2, and cell 3, and the corresponding cell number. Includes indexl, index2, and index3. The primary cell is cell 1. After the handover, the cell aggregated by the UE includes the cell 4, the cell 5, and the cell 6. The corresponding cell numbers include index4, index5, and index6. The primary cell is cell 4.
  • Step 1101 The source base station decides that the primary cell of the UE needs to handover to the cell 4, and the secondary cell needs to switch to the cell 5 and the cell 6.
  • Step 1102 The source base station sends a handover request to the target base station, where the handover request includes configuration information of the cell 1, the cell 2, and the cell 3 (corresponding to the source primary cell and all the source secondary cells).
  • Step 1103 The target base station generates a primary cell replacement command, where the primary cell replacement command includes configuration information corresponding to index4, index5, and index6, that is, configuration information of the cell 4, the cell 5, and the cell 6.
  • the cell number carried in the primary cell replacement command may also use index1, index2, and index3, as long as indexl, index2, and index3 correspond to the configuration information of cell 4, cell 5, and cell 6.
  • the primary cell change command may include a delete command and an add command, such as a delete command index2 and an add command i n dex5, a delete command index3, and an add command index6.
  • the primary cell change command includes a change command, such as changing the commands index2 and index3, and carrying configuration information of the cell 4, the cell 5, and the cell 6.
  • the correspondence between the primary cell and the cell number does not change, or the correspondence between the cell and the cell number does not change. For details, see the process shown in Figure 7-10.
  • Step 1104 The target base station sends a primary cell change command to the UE by using the source base station.
  • Step 1105 The UE receives the primary cell change command and reserves configuration information of the source primary cell and the source secondary cell.
  • Step 1106 The UE deletes the configuration information corresponding to the cell 1, the cell 2, and the cell 3 according to the primary cell replacement command. It is equivalent to deleting the configuration information of the source primary cell and the source secondary cell.
  • Step 1107 The UE updates the configuration information corresponding to the cell 4, the cell 5, and the cell 6 according to the primary cell change command. It is equivalent to increasing the configuration information of the target primary cell and the target secondary cell. This step and step The order of execution of 1106 can be interchanged.
  • Step 1106 and step 1107 may also be combined.
  • Step 1108 The UE reads system information corresponding to the cell 4, the cell 5, and the cell 6, and establishes a connection with the target base station. The handover of the cell is completed.
  • the UE when receiving the primary cell replacement command, retains the configuration information of the source primary cell and the source secondary cell, and does not immediately delete the configuration information of the source primary cell and the source secondary cell, and then, when performing the primary cell replacement command, Updating the configuration information of the reserved primary cell according to the configuration information of the primary cell carried in the primary cell replacement command, and switching from the primary primary cell to the target primary cell, thereby implementing handover of the primary cell in the LTE-A system, but does not need to implement the existing Switching process.
  • the primary cell replacement command in the embodiment of the present invention may be a reconfiguration message or a handover command, and the carried configuration information may be incremental configuration information or full configuration information.
  • the configuration information can be updated by using a combination of the deletion instruction and the addition instruction, or by changing the instruction, thereby implementing cell handover, and thus the implementation manner can be applied to different scenarios, and is more flexible. Switching between primary and/or secondary cells.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium including but not limited to disk storage and optical storage, etc.
  • These computer program instructions can also be stored in a bootable computer or other programmable data processing device.
  • a computer readable memory that operates in a particular manner, causing instructions stored in the computer readable memory to produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.

Description

一种主小区更换的小区配置方法及装置 本申请要求在 2010 年 08 月 11 日提交中国专利局、 申请号为 201010251151.6、 发明名称为"一种主小区更换的小区配置方法及装置"的中国 专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信领域， 特别是涉及主小区更换的小区配置方法及装置。 背景技术
在长期演进（ LTE )及以前的无线通信系统中，一个小区中只有一个载波， 在 LTE系统中最大带宽为 20MHz。 为了提高传输带宽， 业内提出了升级的长 期演进（ LTE Advanced , LTE-A ) 系统。
在 LTE-A系统中， 系统的峰值速率比 LTE有巨大的提高， 要求达到下行 lGbps, 上行 500Mbps。 如果只使用一个最大带宽为 20MHz的载波是无法达 到峰值速率要求的。 因此， LTE-A 系统需要扩展终端可以使用的带宽， 由此 引入了载波聚合（Carrier Aggregation, CA )技术， 即将同一个 eNB (演进基 站）下的多个连续或不连续的载波聚合在一起， 同时为用户设备（UE )服务， 以提供所需的速率。 这些聚合在一起的载波又称为成员载波 （ component carrier, CC )。 每个小区都可以是一个成员载波， 不同 eNB下的小区 （成员 载波） 不能聚合。 针对 UE 聚合的多个小区定义了主小区 （Pcell )和辅小区 ( Scell ) 的 4既念， 分别对应了 UE当前聚合的主载波小区和辅载波小区。
LTE 系统是单载波的系统， 在切换时只涉及到一个目标小区的配置。 而 LTE-A系统涉及主小区和辅小区的多个小区的切换， 无法直接套用 LTE系统 的切换过程， 并且目前尚无 LTE-A系统中切换过程的有效解决方案。 发明内容 本发明实施例提供一种主小区更换的小区配置方法及装置， 用于实现载 波聚合系统中主小区的更换。
一种主小区更换的小区配置方法， 应用于 UE侧， 包括以下步骤： 用户终端 UE通过主小区更换命令获得主小区和辅小区的配置信息；
UE 通过获得的主小区和辅小区的配置信息结合保留的源主小区和源辅 小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和 源辅小区切换到目标主小区和目标辅小区。
一种主小区更换的小区配置方法，应用于基站侧， 用于实现指示 UE进行 小区更新， 包括以下步骤：
基站生成包括主小区的配置信息的主小区更换命令；
基站向用户终端 UE发送主小区更换命令，指示 UE通过主小区更换命令 中携带的主小区和辅小区的配置信息结合保留的所有源主小区和源辅小区的 配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅小 区切换到目标主小区和目标辅小区。
一种用户设备， 包括：
接口模块， 用于通过主小区更换命令获得主小区和辅小区的配置信息； 配置模块， 用于通过获得的主小区和辅小区的配置信息结合保留的所有 源主小区和源辅小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅小区切换到目标主小区和目标辅小区。
一种基站， 包括：
控制模块， 用于生成包括主小区的配置信息的主小区更换命令； 接口模块， 用于向用户终端 UE发送主小区更换命令， 指示 UE通过主小 区更换命令中携带的主小区和辅小区的配置信息结合保留的所有源主小区和 源辅小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小 区和源辅小区切换到目标主小区和目标辅小区。
本发明实施例中 UE收到主小区更换命令时，保留源主小区和源辅小区的 配置信息， 不立刻删除源主小区和源辅小区的配置信息， 然后在执行主小区 更换命令时， 通过根据主小区更换命令携带的主小区的配置信息更新保留的 主小区的配置信息， 从源主小区切换到目标主小区， 实现了 LTE-A系统中主 小区的切换。 附图说明
图 1为本发明实施例中通信系统的结构图；
图 2为本发明实施例中 UE的主要结构图；
图 3为本发明实施例中 UE的详细结构图；
图 4为本发明实施例中基站的结构图；
图 5为本发明实施例中小区切换在 UE侧的方法流程图；
图 6为本发明实施例中小区切换在基站侧的方法流程图；
图 7 为本发明实施例中主小区更换命令包括删除指令和增加指令， 并且 删除指令和增加指令包含相同的小区编号时， 主小区更换的小区配置方法流 程图；
图 8 为本发明实施例中主小区更换命令包括删除指令和增加指令， 并且 删除指令和增加指令包含不同的小区编号时， 主小区更换的小区配置方法流 程图；
图 9 为本发明实施例中主小区更换命令包括更改指令， 并且小区与小区 编号的对应关系不变时， 主小区更换的小区配置方法流程图；
图 10为本发明实施例中主小区更换命令包括更改指令， 并且主小区与小 区编号的对应关系不变时， 主小区更换的小区配置方法流程图；
图 11为本发明实施例中跨基站进行主小区更换的小区配置方法流程图。
具体实施方式
本发明实施例中 UE收到主小区更换命令时，保留源主小区和源辅小区的 配置信息， 不立刻删除源主小区和源辅小区的配置信息， 然后在执行主小区 更换命令时， 通过根据主小区更换命令携带的主小区的配置信息更新保留的 源主小区的配置信息， 从源主小区切换到目标主小区， 实现了 LTE-A系统中 主小区的切换。
参见图 1 ,本实施例中通信系统包括基站和 UE。基站可以是 eNB或 Node B等。
基站，用于生成包括主小区的配置信息的主小区更换命令， 并向 UE发送 主小区更换命令，指示 UE通过主 d、区更换命令中携带的主小区和辅小区的配 置信息结合保留的所有源主小区和源辅小区的配置信息， 获取目标主小区和 目标辅小区的配置信息， 从源主小区和源辅小区切换到目标主小区和目标辅 小区。
主小区更换命令有多种形式， 可以通过多种方式实现主小区和 /或辅小区 的切换， 如主小区更换命令包括删除指令（release 或 remove )和增加指令 ( add ); 基站向 UE发送主小区更换命令， 指示 UE删除所述删除指令包括的 小区编号和该小区编号对应的配置信息， 以及增加所述增加指令包括的小区 编号和主小区更换命令携带的该小区编号对应的配置信息。 特别的， 当删除 指令和增加指令包括同一小区编号时，基站向 UE发送主小区更换命令，指示 UE先根据删除指令删除该小区编号和该小区编号对应的配置信息， 再根据增 加指令增加该小区编号和主小区更换命令携带的该小区编号对应的配置信 息。或者如，主小区更换命令包括更改指令；基站向 UE发送主小区更换命令， 指示 UE删除更改指令包括的小区编号所对应的配置信息，以及增加主小区更 换命令携带的该小区编号对应的配置信息。 其中， 主小区更换命令携带的主 小区和辅小区的配置信息为相对于保留的源主小区的配置信息的增量配置信 息或完全配置信息。 或者， 主小区更换命令携带的主小区的配置信息为相对 于保留的源主小区的配置信息的增量配置信息或完全配置信息； 主小区更换 命令携带的辅小区的配置信息为相对于保留的源辅小区的配置信息的增量配 置信息或完全配置信息。 以上删除指令、 增加指令和更改指令可以只用于辅 小区的更换。 对于主小区的更换， 主小区更换命令可以只携带目标主小区的 小区编号和配置信息， 不需要携带相应的删除指令、 增加指令和更改指令。
UE根据主小区更换命令直接进行目标主小区的配置， 然后自动删除源主小区 的配置信息 （更新掉的配置信息）。
主小区更换命令为重配消息（如无线资源控制（ RRC )重配消息）； 或者， 主小区更换命令为切换命令。
小区编号可以是 UE级的， 即对应同一' 区的不同 UE可以有不同的小区 编号。 目前 UE可聚合的小区数为 5, 小区编号用 3bits表示即可。
完全配置是指基站将完整的配置信息通过专用信令方式发给 UE, UE直 接使用该配置； 增量配置是指 UE和基站内部均保存同一套旧配置， 然后基站 将与旧配置不同的参数通过专用信令方式发给 UE, UE直接使用基站发送的 新配置， 同时， 对于那些没有在信令中出现的参数， 则沿用旧配置或释放旧 配置（及相应功能）。 釆用增量配置方案， 可以降低专用信令的大小， 降低信 令开销。
作为主小区的小区的配置信息至少包括下列参数之一： 物理上行控制信 道（PUCCH )相关参数， 如 SR (调度请求） 资源； SPS (半持续调度）相关 参数， 如 SPS资源配置； 周期性 CQI (信道质量指示）相关参数； 随机接入 相关参数， 如随机接入前导码答分配； 无线链路失败相关参数， 如相关计数 器和计时器的长度； 系统信息中的部分参数， 如系统信息周期、 系统信息接 收窗口大小和 TAI (位置区编号）等； 该主小区的配置信息还可以包括其它参 数， 此处不——列举。
作为辅小区的小区的配置信息包括： 去激活计时器等。 辅小区的配置信 息还可以包括其它参数， 此处不——列举。
UE,用于收到主小区更换命令时，保留源主小区和源辅小区的配置信息， 不立刻删除，然后 UE通过主小区更换命令中携带的主小区和辅小区的配置信 息结合保留的所有源主小区和源辅小区的配置信息， 获取目标主小区和目标 辅小区的配置信息， 从源主小区和源辅小区切换到目标主小区和目标辅小区。 主小区更换命令有多种形式， 可以通过多种方式实现主和 /或辅小区的切换， 如主小区更换命令包括删除指令和增加指令； UE删除所述删除指令包括的小 区编号和该小区编号对应的配置信息， 以及增加所述增加指令包括的小区编 号和主小区更换命令携带的该小区编号对应的配置信息。 特别的， 当删除指 令和增加指令包括同一小区编号时， UE先根据删除指令删除该小区编号和该 小区编号对应的配置信息， 再根据增加指令增加该小区编号和主小区更换命 令携带的该小区编号对应的配置信息。 或者如， 主小区更换命令包括更改指 令； UE删除更改指令包括的小区编号所对应的配置信息， 以及增加主小区 更换命令携带的该小区编号对应的配置信息。 UE在更新配置信息后， 读取目 标小区的系统信息， 实现切换完成。 以上删除指令、 增加指令和更改指令可 以只用于辅小区的更换。 对于主小区的更换， 主小区更换命令可以只携带目 标主小区的小区编号和配置信息， 不需要携带相应的删除指令、 增加指令和 更改指令。 UE根据主小区更换命令直接进行目标主小区的配置， 然后自动删 除源主小区的配置信息 （更新掉的配置信息）。
主小区的切换可能是基站内切换也可能是跨基站的切换。 如果是基站内 的切换， 则判决切换和生成主小区更换命令的是同一基站。 如果是跨基站的 切换， 则源基站判决切换， 并向目标基站发送切换请求， 该请求消息中携带 有源主小区和 /或源辅小区的配置信息， 由目标基站生成主小区更换命令， 并 通过源基站发送给 UE。 在跨基站切换的情况下， UE读取目标小区的系统信 息， 以便与目标基站建立连接， 实现切换完成。
参见图 2, 本实施例中 UE包括： 接口模块 201和配置模块 202。 接口模 块 201可包括收发信机等器件。 配置模块 202可由各种可执行器件实现。
接口模块 201 用于接收和解析主小区更换命令， 通过主小区更换命令获 得其携带的主小区和辅小区的配置信息。 接口模块 201 还用于读取目标小区 的系统信息等。 接口模块 201还可以接收和发送其它消息。
配置模块 202, 与接口模块 201连接， 用于通过主小区更换命令中携带的 主小区和辅小区的配置信息结合保留的所有源主小区和源辅小区的配置信 息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅小区切换 到目标主小区和目标辅小区。 主小区更换命令包括删除指令和增加指令时， 配置模块 202删除删除指令包括的小区编号和该小区编号对应的配置信息， 以及增加增加指令包括的小区编号和主小区更换命令携带的该小区编号对应 的配置信息。 特别的， 当删除指令和增加指令包括同一小区编号时， 配置模 块 202先根据删除指令删除该小区编号和该小区编号对应的配置信息， 再根 据增加指令增加该小区编号和主小区更换命令携带的该小区编号对应的配置 信息。 主小区更换命令包括更改指令时， 配置模块 202删除更改指令包括的 小区编号所对应的配置信息 , 以及增加主小区更换命令携带的该小区编号对 应的配置信息。
UE还包括存储模块 203 , 可由各种存储介质实现， 参见图 3所示。 存储 模块 203用于保存源主小区和源辅小区的配置信息等。
参见图 4, 本实施例中基站包括： 控制模块 401和接口模块 402。 控制模 块 401可由各种可执行器件实现。 接口模块 402可由发射机和接收机等器件 实现。
控制模块 401 用于生成包括主小区的配置信息的主小区更换命令。 控制 模块 401还用于进行切换判决。
接口模块 402用于向 UE发送主小区更换命令，指示 UE通过主小区更换 命令中携带的主小区和辅小区的配置信息结合保留的所有源主小区和源辅小 区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源 辅小区切换到目标主小区和目标辅小区。 控制模块 401 生成的主小区更换命 令包括删除指令和增加指令时，接口模块 402向 UE发送主小区更换命令，指 示 UE删除删除指令包括的小区编号和该小区编号对应的配置信息，以及增加 增加指令包括的小区编号和主小区更换命令携带的该小区编号对应的配置信 息。 特别的， 当删除指令和增加指令包括同一小区编号时， 接口模块 402 向 UE发送主小区更换命令， 指示 UE先根据删除指令删除该小区编号和该小区 编号对应的配置信息， 再根据增加指令增加该小区编号和主小区更换命令携 带的该小区编号对应的配置信息。 控制模块 401 生成的主小区更换命令包括 更改指令时， 接口模块 402向 UE发送主小区更换命令， 指示 UE删除更改指 令包括的小区编号所对应的配置信息， 以及增加主小区更换命令携带的该小 区编号对应的配置信息。 接口模块 402还用于发送和接收切换请求。
该基站包括作为源基站和作为目标基站的全部功能， 只是在不同的场景 发挥不同的作用。
以上描述了通信系统、基站和 UE的内部结构和功能， 下面对小区切换的 实现过程进行介绍。
参见图 5, 本实施例中小区切换在 UE侧的方法流程如下：
步骤 501 : UE收到主小区更换命令时， 保留源主小区和源辅小区的配置 信息。
步骤 502: UE通过主小区更换命令中携带的主小区和辅小区的配置信息 结合保留的所有源主小区和源辅小区的配置信息， 获取目标主小区和目标辅 小区的配置信息， 从源主小区和源辅小区切换到目标主小区和目标辅小区。
参见图 6, 本实施例中小区切换在基站侧的方法流程如下：
步骤 601 : 基站生成包括主小区的配置信息的主小区更换命令。
步骤 602: 基站向 UE发送主小区更换命令， 指示 UE通过主小区更换命 令中携带的主小区和辅小区的配置信息结合保留的所有源主小区和源辅小区 的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅 小区切换到目标主小区和目标辅小区。
主小区更换命令有多种结构， 相应的有多种方式实现小区切换， 并且小 区切换涉及基站内切换和跨基站的切换， 下面通过几个实施例来详细介绍实 现过程。
参见图 7, 本实施例中主小区更换命令包括删除指令和增加指令， 并且删 除指令和增加指令包含相同的小区编号时， 主小区更换的小区配置方法流程 如下：
例如， 基站下的小区包括小区 1、 小区 2、 小区 3和小区 4, UE聚合的小 区包括小区 1、小区 2和小区 3 ,相应的小区编号包括 indexl、index2和 index3。 其中主小区为小区 1。 切换后， 主小区为小区 2, 辅小区包括小区 1和小区 3。 步骤 701 : 基站判决 UE的主小区需要切换到小区 2, 辅小区中的小区 2 需要切换到小区 1。 相当于 UE 的主、 辅小区进行对调。 其中， 基站可通过 UE上报的测量报告来进行判决。
步骤 702: 基站生成包括删除指令和增加指令的主小区更换命令， 并且删 除指令和增加指令均包括 index2。主小区更换命令中的增加指令还包括 index2 对应的目标小区的配置信息。 主小区更换命令还包括 indexl和 index 1对应的 目标主小区的配置信息。 UE可根据配置信息确定哪个编号对应的是主小区。 主小区和辅小区的配置信息可以是相对于源主小区的配置信息的增量配置信 息或完全配置信息； 或者 indexl对应的目标小区的配置信息是相对于源主小 区的配置信息的增量配置信息或完全配置信息， index2 对应的目标小区的配 置信息是相对于源辅小区 （小区 2和 /或小区 3 ) 的配置信息的增量配置信息 或完全配置信息。
步骤 703: 基站向 UE发送主小区更换命令。
步骤 704: UE接收主小区更换命令并保留源主小区和源辅小区的配置信 息。
步骤 705: UE根据删除指令删除 index2对应的配置信息。 相当于删除小 区 2 (源辅小区） 的配置信息。
步骤 706: UE根据增加指令更新 index2对应的配置信息。 相当于增加小 区 2 (目标主小区） 的配置信息。 同时更新 indexl对应的目标主小区的配置 信息。 以及删除源主小区的配置信息 （更新掉的配置信息）。
对于小区 3 , 目标辅小区与源辅小区是同一小区， UE沿用保留的配置信 息。
步骤 707: UE读取 indexl (小区 2 )和 index2 (小区 1 )对应的系统信息。 完成了小区的切换。
本实施例中主小区在切换前后对应的小区编号不变， 但改变了小区与小 区编号的对应关系。 本实施例中辅小区也可从小区 2切换到小区 4,只要在增加指令中携带小 区 4的配置信息即可。
参见图 8, 本实施例中主小区更换命令包括删除指令和增加指令， 并且删 除指令和增加指令包含不同的小区编号时， 主小区更换的小区配置方法流程 如下：
例如， 基站下的小区包括小区 1、 小区 2、 小区 3和小区 4, UE聚合的小 区包括小区 1、小区 2和小区 3 ,相应的小区编号包括 indexl、index2和 index3。 其中主小区为小区 1。 切换后， 主小区为小区 2, 辅小区包括小区 3和小区 4 ( index4 )。
步骤 801 : 基站判决 UE的主小区需要切换到小区 2, 辅小区中的小区 2 需要切换到小区 4。
步骤 802: 基站生成包括删除指令和增加指令的主小区更换命令， 并且删 除指令包括 index2, 增加指令包括 index4及两者对应的配置信息。 其中， 增 加指令中标记 index2对应目标主小区， 还可以标记 index4对应目标辅小区。 或者不釆用标记方式， 如釆用命令组合方式， 删除 index2和增加 index4 , 相 当于从 index2对应的小区 2切换到 index4对应的小区 4 , 由于切换前 index2 对应的是辅小区， 则切换后 index4对应的也是辅小区； 或者通过携带的配置 信息可以获知哪个小区为主小区及哪个小区为辅小区。 主小区更换命令中的 增加指令还包括 index4对应的目标小区的配置信息。 主小区更换命令还包括 index2和 index2对应的目标主小区的配置信息。 相当于从 indexl对应的小区 1切换到 index2对应的小区 2。
步骤 803: 基站向 UE发送主小区更换命令。
步骤 804: UE接收主小区更换命令并保留源主小区和源辅小区的配置信 息。
步骤 805: UE根据删除指令删除 index2对应的配置信息。 相当于删除小 区 2 (源辅小区） 的配置信息。
步骤 806: UE根据增加指令更新 index4对应的配置信息。 相当于增加小 区 4 (目标辅小区） 的配置信息。 此步骤与步骤 805的执行顺序可以互换。 同时， 更新 index2对应的目标主小区的配置信息。 以及删除源主小区的 配置信息 （更新掉的配置信息）。
对于小区 3 , UE沿用保留的配置信息。
步骤 807: UE读取 index2 (小区 2 )和 index4 (小区 4 )对应的系统信息。 完成了小区的切换。
本实施例中主小区在切换前后对应的小区编号发生了变化， 但是小区与 小区编号的对应关系保持不变。
辅小区从小区 2切换到小区 1也可以釆用图 8所示的方法， 将 index4改 为 indexl并携带 indexl对应的配置信息即可。
参见图 9, 本实施例中主小区更换命令包括更改指令， 并且小区与小区编 号的对应关系不变时， 主小区更换的小区配置方法流程如下：
例如， 基站下的小区包括小区 1、 小区 2、 小区 3和小区 4, UE聚合的小 区包括小区 1、小区 2和小区 3 ,相应的小区编号包括 indexl、index2和 index3。 其中主小区为小区 1。 切换后， 主小区为小区 2, 辅小区包括小区 3和小区 4 ( index4 )。
步骤 901 : 基站判决 UE的主小区需要切换到小区 2, 辅小区中的小区 2 需要切换到小区 4。
步骤 902: 基站生成包括更改指令的主小区更换命令， 并且更改指令包括 indexl、 index2和 index4对应的配置信息。
步骤 903: 基站向 UE发送主小区更换命令。
步骤 904: UE接收主小区更换命令并保留源主小区和源辅小区的配置信 息。
步骤 905: UE根据更改指令删除 index2对应的配置信息。 相当于删除小 区 2 (源辅小区）的配置信息。其中， 由于 UE未存有 index4对应的配置信息， 所以不需要执行关于 index4的删除操作。
步骤 906: UE根据更改指令更新 index4对应的配置信息。 相当于增加小 区 4 (目标辅小区） 的配置信息。 同时更新 index2对应的目标主小区的配置 信息。 以及删除源主小区的配置信息 （更新掉的配置信息）。
此步骤与步骤 905的执行顺序可以互换。
步骤 905与步骤 906也可以合并， 如， 更改指令包括 index2和 index4对 应的配置信息。 UE用 index4对应的配置信息（目标辅小区的配置信息）更新 本地的关于 index4为空的配置信息， 相当于增加了作为辅小区的小区 4。 UE 用 index2对应的目标主小区的配置信息更新本地的关于 indexl的配置信息， 相当于主小区从小区 1切换到小区 2, 然后 UE自动删除小区 1和小区 2原有 的配置信息 （更新掉的配置信息）。
对于小区 3 , UE沿用保留的配置信息。
步骤 907: UE读取 index2 (小区 2 )和 index4 (小区 4 )对应的系统信息。 完成了小区的切换。
本实施例中主小区在切换前后对应的小区编号发生了变化， 但是小区与 小区编号的对应关系保持不变。
辅小区从小区 2切换到小区 1也可以釆用图 9所示的方法， 将 index4改 为 indexl并携带 indexl对应的配置信息即可。
参见图 10, 本实施例中主小区更换命令包括更改指令， 并且主小区与小 区编号的对应关系不变时， 主小区更换的小区配置方法流程如下：
例如， 基站下的小区包括小区 1、 小区 2、 小区 3和小区 4, UE聚合的小 区包括小区 1、小区 2和小区 3 ,相应的小区编号包括 indexl、index2和 index3。 其中主小区为小区 1。 切换后， 主小区为小区 2, 辅小区包括小区 3和小区 4 ( index4 )。
步骤 1001 : 基站判决 UE的主小区需要切换到小区 2 , 辅小区中的小区 2 需要切换到小区 4。
步骤 1002: 基站生成包括更改指令的主小区更换命令， 并且更改指令包 括 index2 (小区 4 )对应的配置信息。 以及主小区更换命令还包括 indexl (小 区 2 )和 indexl (小区 2 )对应的配置信息。 本实施例中主小区对应的小区编号不变， 辅小区对应的小区编号在切换 前后也可以不变。
步骤 1003: 基站向 UE发送主小区更换命令。
步骤 1004: UE接收主小区更换命令并保留源主小区和源辅小区的配置信 息。
步骤 1005: UE根据更改指令删除 index2对应的配置信息。 相当于删除 小区 2 (源辅小区） 的配置信息。
步骤 1006: UE根据更改指令更新 index2对应的配置信息。 相当于增加 小区 4 (目标辅小区） 的配置信息。 UE用 indexl (小区 2 )对应的目标主小 区的配置信息更新本地的关于小区 1 的配置信息， 相当于主小区从小区 1切 换到小区 2, 然后 UE自动删除小区 1和小区 2原有的配置信息（更新掉的配 置信息）。
此步骤与步骤 1005的执行顺序可以互换。
步骤 1005与步骤 1006也可以合并， 如， 更改指令包括 indexl和 index2 对应的配置信息。 UE用 indexl对应的配置信息更新保留的 indexl (小区 1 ) 对应的配置信息， 相当于删除了小区 1和增加了小区 2的配置， 实现了将主 小区从小区 1切换到小区 2。 UE用 index2对应的配置信息更新保留的 index2 对应的配置信息， 相当于删除了小区 2和增加了小区 4的配置， 实现了将辅 小区从小区 2切换到小区 4。
对于小区 3 , UE沿用保留的配置信息。
步骤 1007: UE读取 indexl (小区 2 )和 index2 (小区 4 )对应的系统信 息。 完成了小区的切换。
本实施例中主小区在切换前后对应的小区编号不变， 但是小区与小区编 号的对应关系发生了变化。
辅小区从小区 2切换到小区 1也可以釆用图 10所示的方法， 将携带的小 区 4的配置信息改为携带小区 1的配置信息即可。
参见图 11 ,本实施例中跨基站进行主小区更换的小区配置方法流程如下： 例如， 源基站下的小区包括小区 1、 小区 2和小区 3 , 目标基站下的小区 包括小区 4、 小区 5和小区 6, UE聚合的小区包括小区 1、 小区 2和小区 3 , 相应的小区编号包括 indexl、 index2和 index3。其中主小区为小区 1。切换后， UE聚合的小区包括小区 4、 小区 5和小区 6, 相应的小区编号包括 index4、 index5和 index6。 主小区为小区 4。
步骤 1101 : 源基站判决 UE的主小区需要切换到小区 4,辅小区需要切换 到小区 5和小区 6。
步骤 1102: 源基站向目标基站发送切换请求， 该切换请求包括小区 1、 小区 2和小区 3 (相当于源主小区和所有源辅小区） 的配置信息。
步骤 1103: 目标基站生成主小区更换命令， 主小区更换命令包括 index4、 index5和 index6对应的配置信息， 也就是小区 4、 小区 5和小区 6的配置信 息。
本实施例中主小区更换命令携带的小区编号也可以沿用 indexl、 index2 和 index3 , 只要 indexl、 index2和 index3对应的是小区 4、 小区 5和小区 6 的配置信息即可。
主小区更换命令可以包括删除指令和增加指令， 例如删除指令 index2和 增加指令 index5、 删除指令 index3和增加指令 index6。 或者主小区更换命令 包括更改指令， 例如更改指令 index2和 index3 , 并携带有小区 4、 小区 5和 小区 6 的配置信息。 主小区与小区编号的对应关系不变， 或者小区与小区编 号的对应关系不变。 具体可参见图 7-10所示的流程。
步骤 1104: 目标基站通过源基站向 UE发送主小区更换命令。
步骤 1105: UE接收主小区更换命令并保留源主小区和源辅小区的配置信 息。
步骤 1106: UE根据主小区更换命令删除小区 1、 小区 2和小区 3对应的 配置信息。 相当于删除源主小区和源辅小区的配置信息。
步骤 1107: UE根据主小区更换命令更新小区 4、 小区 5和小区 6对应的 配置信息。 相当于增加目标主小区和目标辅小区的配置信息。 此步骤与步骤 1106的执行顺序可以互换。
如果主小区更换命令包括更改指令， 步骤 1106与步骤 1107也可以合并。 步骤 1108: UE读取小区 4、 小区 5和小区 6对应的系统信息， 并与目标 基站建立连接。 完成了小区的切换。
本发明实施例中 UE收到主小区更换命令时，保留源主小区和源辅小区的 配置信息， 不立刻删除源主小区和源辅小区的配置信息， 然后在执行主小区 更换命令时， 通过根据主小区更换命令携带的主小区的配置信息更新保留的 主小区的配置信息， 从源主小区切换到目标主小区， 实现了 LTE-A系统中主 小区的切换， 但不需要实现现有的切换过程。 本发明实施例中的主小区更换 命令可以是重配消息或切换命令， 并且携带的配置信息可以是增量配置信息 或完全配置信息。 以及， 本发明实施例可以通过删除指令与增加指令的组合， 或通过更改指令来实现配置信息的更新， 进而实现小区的切换， 如此多的实 现方式可适用于不同场景的需要， 更灵活的实现主和 /或辅小区的切换。
本领域内的技术人员应明白， 本发明的实施例可提供为方法、 系统、 或 计算机程序产品。 因此， 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且， 本发明可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器和光学存储器等 )上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备（系统）、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器， 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中， 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品， 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理， 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种主小区更换的小区配置方法， 其特征在于， 包括以下步骤： 用户终端 UE通过主小区更换命令获得主小区和辅小区的配置信息；
UE 通过获得的主小区和辅小区的配置信息结合保留的源主小区和源辅 小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和 源辅小区切换到目标主小区和目标辅小区。
2、 如权利要求 1所述的方法， 其特征在于， 主小区更换命令包括删除指 令和增加指令；
UE根据主小区更换命令携带的辅小区的配置信息更新保留的源辅小区 的配置信息的步骤包括： UE删除所述删除指令包括的辅小区的小区编号和该 小区编号对应的配置信息， 以及增加所述增加指令包括的辅小区的小区编号 和携带的该小区编号对应的配置信息。
3、 如权利要求 2所述的方法， 其特征在于， 当删除指令和增加指令包括 同一小区编号时， UE先根据删除指令删除该小区编号和该小区编号对应的配 置信息， 再根据增加指令增加该小区编号和携带的该小区编号对应的配置信 息。
4、 如权利要求 1所述的方法， 其特征在于， 主小区更换命令包括更改指 令；
UE根据主小区更换命令携带的辅小区的配置信息更新保留的源辅小区 的配置信息的步骤包括： UE删除更改指令包括的辅小区的小区编号所对应的 配置信息， 以及增加携带的该小区编号对应的配置信息。
5、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 主小区更换命 令携带的主小区和辅小区的配置信息相对于保留的源主小区的配置信息的增 量配置信息或完全配置信息； 或者
主小区更换命令携带的主小区的配置信息为相对于保留的源主小区的配 置信息的增量配置信息或完全配置信息； 主小区更换命令携带的辅小区的配 置信息为相对于保留的源辅小区的配置信息的增量配置信息或完全配置信 息。
6、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 主小区更换命 令为重配消息； 或者， 主小区更换命令为切换命令。
7、 一种主小区更换的小区配置方法， 其特征在于， 包括以下步骤： 基站生成包括主小区的配置信息的主小区更换命令；
基站向用户终端 UE发送主小区更换命令，指示 UE通过主小区更换命令 中携带的主小区和辅小区的配置信息结合保留的所有源主小区和源辅小区的 配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅小 区切换到目标主小区和目标辅小区。
8、 如权利要求 7所述的方法， 其特征在于， 主小区更换命令包括删除指 令和增加指令；
基站向 UE发送主小区更换命令的步骤包括：基站向 UE发送主小区更换 命令，指示 UE删除所述删除指令包括的辅小区的小区编号和该小区编号对应 的配置信息， 以及增加所述增加指令包括的辅小区的小区编号和主小区更换 命令携带的该小区编号对应的配置信息。
9、 如权利要求 8所述的方法， 其特征在于， 当删除指令和增加指令包括 同一小区编号时， 基站向 UE发送主小区更换命令的步骤包括： 基站向 UE发 送主小区更换命令，指示 UE先根据删除指令删除该小区编号和该小区编号对 应的配置信息， 再根据增加指令增加该小区编号和主小区更换命令携带的该 'J、区编号对应的配置信息。
10、 如权利要求 7 所述的方法， 其特征在于， 主小区更换命令包括更改 指令；
基站向 UE发送主小区更换命令的步骤包括：基站向 UE发送主小区更换 命令，指示 UE删除更改指令包括的辅小区的小区编号所对应的配置信息， 以 及增加主小区更换命令携带的该小区编号对应的配置信息。
11、 如权利要求 7至 10中任一项所述的方法， 其特征在于， 主小区更换 命令携带的主小区和辅小区的配置信息为相对于保留的源主小区的配置信息 的增量配置信息或完全配置信息； 或者
主小区更换命令携带的主小区的配置信息为相对于保留的源主小区的配 置信息的增量配置信息或完全配置信息； 主小区更换命令携带的辅小区的配 置信息为相对于保留的源辅小区的配置信息的增量配置信息或完全配置信 息。
12、 如权利要求 7至 10中任一项所述的方法， 其特征在于， 主小区更换 命令为重配消息； 或者， 主小区更换命令为切换命令。
13、 一种用户设备， 其特征在于， 包括：
接口模块， 用于通过主小区更换命令获得主小区和辅小区的配置信息； 配置模块， 用于通过获得的主小区和辅小区的配置信息结合保留的所有 源主小区和源辅小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小区和源辅小区切换到目标主小区和目标辅小区。
14、 如权利要求 13所述的用户设备， 其特征在于， 主小区更换命令包括 删除指令和增加指令；
配置模块删除所述删除指令包括的辅小区的小区编号和该小区编号对应 的配置信息， 以及增加所述增加指令包括的辅小区的小区编号和主小区更换 命令携带的该小区编号对应的配置信息。
15、 如权利要求 14所述的用户设备， 其特征在于， 当删除指令和增加指 令包括同一小区编号时， 配置模块先根据删除指令删除该小区编号和该小区 编号对应的配置信息， 再根据增加指令增加该小区编号和主小区更换命令携 带的该小区编号对应的配置信息。
16、 如权利要求 13所述的用户设备， 其特征在于， 主小区更换命令包括 更改指令；
配置模块删除更改指令包括的辅小区的小区编号所对应的配置信息， 以 及增加主小区更换命令携带的该小区编号对应的配置信息。
17、 如权利要求 13至 16中任一项所述的用户设备， 其特征在于， 主小 区更换命令携带的主小区和辅小区的配置信息为相对于保留的源主小区的配 置信息的增量配置信息或完全配置信息； 或者
主小区更换命令携带的主小区的配置信息为相对于保留的源主小区的配 置信息的增量配置信息或完全配置信息； 主小区更换命令携带的辅小区的配 置信息为相对于保留的源辅小区的配置信息的增量配置信息或完全配置信 息。
18、 如权利要求 13至 16中任一项所述的用户设备， 其特征在于， 主小 区更换命令为重配消息； 或者， 主小区更换命令为切换命令。
19、 一种基站， 其特征在于， 包括：
控制模块， 用于生成包括主小区的配置信息的主小区更换命令； 接口模块， 用于向用户终端 UE发送主小区更换命令， 指示 UE通过主小 区更换命令中携带的主小区和辅小区的配置信息结合保留的所有源主小区和 源辅小区的配置信息， 获取目标主小区和目标辅小区的配置信息， 从源主小 区和源辅小区切换到目标主小区和目标辅小区。
20、 如权利要求 19所述的基站， 其特征在于， 主小区更换命令包括删除 指令和增加指令；
接口模块向 UE发送主小区更换命令，指示 UE删除所述删除指令包括的 辅小区的小区编号和该小区编号对应的配置信息， 以及增加所述增加指令包 括的小区编号和主小区更换命令携带的该小区编号对应的配置信息。
21、 如权利要求 20所述的基站， 其特征在于， 当删除指令和增加指令包 括同一小区编号时， 接口模块向 UE发送主小区更换命令， 指示 UE先根据删 除指令删除该小区编号和该小区编号对应的配置信息， 再根据增加指令增加 该小区编号和主小区更换命令携带的该小区编号对应的配置信息。
22、 如权利要求 19所述的基站， 其特征在于， 主小区更换命令包括更改 指令；
接口模块向 UE发送主小区更换命令，指示 UE删除更改指令包括的辅小 区的小区编号所对应的配置信息， 以及增加主小区更换命令携带的该小区编 号对应的配置信息。
23、 如权利要求 19至 22中任一项所述的基站， 其特征在于， 主小区更 换命令携带的主小区和辅小区的配置信息为相对于保留的源主小区的配置信 息的增量配置信息或完全配置信息； 或者
主小区更换命令携带的主小区的配置信息为相对于保留的源主小区的配 置信息的增量配置信息或完全配置信息； 主小区更换命令携带的辅小区的配 置信息为相对于保留的源辅小区的配置信息的增量配置信息或完全配置信 息。
24、 如权利要求 19至 22中任一项所述的基站， 其特征在于， 主小区更 换命令为重配消息； 或者， 主小区更换命令为切换命令。
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