WO2014173359A1 - 一种切换方法、基站、载波聚合系统、存储介质 - Google Patents

一种切换方法、基站、载波聚合系统、存储介质 Download PDF

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Publication number
WO2014173359A1
WO2014173359A1 PCT/CN2014/079108 CN2014079108W WO2014173359A1 WO 2014173359 A1 WO2014173359 A1 WO 2014173359A1 CN 2014079108 W CN2014079108 W CN 2014079108W WO 2014173359 A1 WO2014173359 A1 WO 2014173359A1
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Prior art keywords
secondary cell
base station
scell
enb
target base
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PCT/CN2014/079108
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English (en)
French (fr)
Inventor
章正权
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中兴通讯股份有限公司
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Publication of WO2014173359A1 publication Critical patent/WO2014173359A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835Determination of neighbour cell lists
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0083Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085Hand-off measurements

Definitions

  • the present invention relates to handover technologies in a Long Term Evolution (LTE) system, and in particular, to a handover method, a base station, a carrier aggregation system, and a storage medium.
  • LTE Long Term Evolution
  • the user equipment can obtain the service of the base station (NB, NodeB) from multiple carriers, which doubles the data transmission rate, wherein the NB includes the evolved universal Subgrade radio access network node (eNB, E-UTRAN NodeB).
  • NB base station
  • eNB evolved universal Subgrade radio access network node
  • the handover process is more complicated than that of the normal single service carrier, which is mainly reflected in the primary cell (PCell, Secondary Cell) and the secondary cell (SCell, Secondary Cell) in the handover process. Inter-switching, addition/modification/deletion of secondary cells, etc.
  • the current protocol only supports carrier aggregation and handover in the base station, but does not consider the handover processing during carrier aggregation between the base stations, which affects the application scenario of carrier aggregation.
  • the embodiments of the present invention provide a handover method, a base station, a carrier aggregation system, and a storage medium, which can implement handover processing during carrier aggregation between base stations, thereby extending carrier aggregation.
  • Application scenario a handover method, a base station, a carrier aggregation system, and a storage medium, which can implement handover processing during carrier aggregation between base stations, thereby extending carrier aggregation.
  • the embodiment of the present invention provides a handover method, where the method includes: receiving, by a target base station, a handover request message that is sent by a source base station and carrying carrier aggregation information; and the target base station according to the carrier aggregation information and the target Carrier aggregation configured by the base station The cooperation information determines the secondary cell for the user equipment UE;
  • the target base station establishes a secondary cell, or interacts with a base station SCell-eNB of the secondary cell to establish a secondary cell, and determines secondary cell configuration information of the secondary cell;
  • the target base station carries the secondary cell configuration information in a handover request response message and sends the information to the source base station.
  • the carrier aggregation information includes a secondary cell list configured by the active base station for the UE;
  • the target base station establishes a secondary cell, or performs interaction with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, including:
  • the target base station determines that the secondary cell is not in the secondary cell list configured by the source base station for the UE, and sends a secondary cell setup request message to the SCell-eNB, where the secondary cell setup request message is used to trigger the SCell – the eNB establishes a secondary cell of the UE;
  • the target base station Determining, by the target base station, that the secondary cell sends a secondary cell switching request message to the SCell-eNB when the source base station is in the secondary cell list configured by the source, where the secondary cell switching request message is used to trigger the SCell – the eNB performs a secondary cell conversion;
  • the target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, including:
  • the target base station sends a secondary cell setup request message to all the SCell-eNBs, where the secondary cell setup request message is used to trigger the SCell-eNB to establish the secondary cell of the UE;
  • the target base station receives a secondary cell setup response message that is sent by each SCell-eNB and carries the secondary cell configuration information, and determines secondary cell configuration information of the secondary cell according to the secondary cell setup response message.
  • the embodiment of the present invention provides a handover method, where the method includes: a source base station transmitting a handover request message carrying carrier aggregation information to a target base station; and the target base station according to the carrier aggregation information and the The carrier aggregation information configured by the target base station determines the secondary cell for the user equipment UE;
  • the target base station establishes a secondary cell or interacts with a base station where the secondary cell is located to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, and carries the secondary cell configuration information in a handover request response message and sends the The source base station;
  • the source base station notifies the UE of the secondary cell configuration information.
  • the carrier aggregation information includes a secondary cell list configured by the active base station for the UE; correspondingly, the target base station establishes a secondary cell or interacts with a base station where the secondary cell is located to establish a secondary cell, and determines a location
  • the secondary cell configuration information of the secondary cell includes:
  • the target base station When the target base station determines that the secondary cell is not in the secondary cell list configured by the source base station for the UE, the target base station sends a secondary cell setup request message to the SCell-eNB; the SCell-eNB according to the auxiliary a cell setup request message is used to establish a secondary cell of the UE, and a secondary cell setup response message carrying the secondary cell configuration information is sent to the target base station; or
  • the target base station When the target base station determines that the secondary cell is in the secondary cell list configured by the source base station, the target base station sends a secondary cell handover request message to the SCell-eNB; and the SCell-eNB performs secondary cell conversion. And sending a secondary cell conversion response message to the target base station.
  • the target base station establishes a secondary cell or interacts with a base station where the secondary cell is located to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, including:
  • the target base station sends a secondary cell setup request message to all SCell-eNBs respectively; each SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends bearer cell configuration information to the target base station.
  • the secondary cell establishment response message sends a secondary cell setup request message to all SCell-eNBs respectively; each SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends bearer cell configuration information to the target base station.
  • the secondary cell establishment response message is a secondary cell setup request message to all SCell-eNBs respectively; each SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends bearer cell configuration information to the target base station.
  • the method further includes: Receiving, by the source base station, a measurement report that is sent by the UE and carrying a neighboring cell; the source base station determining, according to the measurement report of the neighboring cell, a candidate secondary cell to be aggregated; the source base station determining the candidate to be aggregated.
  • the secondary cell information, the UE capability information, and the secondary cell list configured by the source base station for the UE form carrier aggregation information, and the carrier aggregation information is carried in the handover request message sent to the target base station.
  • the source base station notifying the UE of the secondary cell configuration information includes: the source base station sending, by using the handover request response message, radio resource control to the UE
  • the method further includes:
  • the source base station sends a secondary cell release message to the base station to which the secondary cell in the secondary cell release list belongs according to the secondary cell release list that is carried in the handover request response message;
  • the cell includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected but not established in the secondary cell list of the source base station; the secondary cell in the secondary cell release list belongs to After receiving the secondary cell release message, the base station releases the secondary cell of the UE.
  • an embodiment of the present invention provides a base station, where the base station is a target base station, where the target base station includes a receiving unit, a determining unit, a processing unit, and a sending unit, where: the receiving unit is configured to send by the receiving source base station. a handover request message carrying carrier aggregation information;
  • the determining unit is configured to determine, according to the carrier aggregation information and the carrier aggregation information configured by the target base station, a secondary cell for the user equipment UE;
  • the processing unit is configured to establish a secondary cell, or interact with a base station where the secondary cell is located to establish a secondary cell; and determine secondary cell configuration information of the secondary cell;
  • the sending unit is configured to send the secondary cell configuration information to the source base station by being carried in a handover request response message.
  • the carrier aggregation information includes a secondary cell list configured by the active base station for the UE;
  • the processing unit includes a determining module, a first sending module, a second sending module, and a first receiving module, where:
  • the determining module is configured to determine whether the secondary cell is in the secondary cell list configured by the source base station, or not, triggering the first sending module; when yes, triggering the second sending module;
  • the first sending module is configured to send a secondary cell setup request message to the SCell-eNB, where the secondary cell setup request message is used to trigger the SCell-eNB to establish a secondary cell of the UE;
  • the second sending module is configured to send a secondary cell switching request message to the SCell-eNB, where the secondary cell switching request message is used to trigger the SCell-eNB to perform secondary cell switching;
  • the first receiving module is configured to receive a secondary cell conversion response message sent by the SCell-eNB, or receive a secondary cell setup response message sent by the SCell-eNB and carry the secondary cell configuration information, and according to the auxiliary The cell setup response message determines the secondary cell configuration information.
  • the processing unit includes a third sending module and a second receiving module, where: the third sending module is configured to send a secondary cell setup request message to all SCell-eNBs, where the secondary cell setup request message is used.
  • the SCell-eNB is triggered to establish a secondary cell of the UE;
  • the second receiving module is configured to receive a secondary cell setup response message that is sent by each SCell-eNB and that carries the secondary cell configuration information, and determine secondary cell configuration information of the secondary cell according to the secondary cell setup response message.
  • a fourth aspect a carrier aggregation system provided by an embodiment of the present invention, where the system includes a source Base station, target base station, where:
  • the source base station is configured to send a handover request message carrying carrier aggregation information to the target base station; and, to notify the user equipment UE of the secondary cell configuration information;
  • the target base station is configured to determine a secondary cell for the UE according to the carrier aggregation information and the carrier aggregation information configured by the target base station; and establish a secondary cell or interact with a base station where the secondary cell is located to establish a secondary cell, And determining the secondary cell configuration information of the secondary cell, and transmitting the secondary cell configuration information in the handover request response message, and sending the information to the source base station.
  • the system further includes: a base station SCell_eNB to which the secondary cell belongs;
  • the SCell-eNB is configured to establish a secondary cell of the UE according to the secondary cell setup request message, and send a secondary cell setup response message carrying the secondary cell configuration information to the target base station; and perform secondary cell conversion. And sending a secondary cell conversion response message to the target base station; the target base station is further configured to determine that the secondary cell is not in the secondary cell list configured by the source base station for the UE, to the SCell-eNB Sending a secondary cell setup request message; and determining that the secondary cell is in the secondary cell list configured by the source base station for the UE, the target base station sends a secondary cell switch request message to the SCell-eNB to request a translation auxiliary The primary cell to which the cell belongs.
  • the system further includes: a base station SCell_eNB to which the secondary cell belongs;
  • the SCell-eNB is configured to establish a secondary cell of the UE according to the secondary cell setup request message, and send a secondary cell setup response message carrying the secondary cell configuration information to the target base station;
  • the target base station is further configured to send a secondary cell setup request message to all SCell-eNBs, respectively.
  • the system further includes a base station to which the secondary cell in the secondary cell release list belongs, and the source base station is configured to release the list into the secondary cell according to the secondary cell release list carried in the handover request response message.
  • the base station to which the secondary cell belongs sends a secondary cell release message;
  • the secondary cell in the secondary cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected in the secondary cell list of the source base station but is failed to be established;
  • the base station to which the secondary cell in the secondary cell release list belongs is configured to release the secondary cell of the UE after receiving the secondary cell release message.
  • an embodiment of the present invention provides a computer readable storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing switching method.
  • the handover method, the base station, the carrier aggregation system, and the storage medium provided by the embodiment of the present invention, where the target base station receives a handover request message that is sent by the source base station and carries the carrier aggregation information; the target base station according to the carrier aggregation information and The carrier aggregation information configured by the target base station determines a secondary cell for the UE; the target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell; The base station sends the secondary cell configuration information to the source base station in the handover request response message. In this manner, the handover process during carrier aggregation between the base stations can be implemented, thereby expanding the application scenario of carrier aggregation.
  • 1-1 is a schematic flowchart 1 of an implementation process of a handover method according to an embodiment of the present invention
  • 1-2 is a schematic flowchart 2 of an implementation process of a handover method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a first handover method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a second handover method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of another handover method according to an embodiment of the present invention.
  • 5-1 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5-2 is a schematic structural diagram 1 of a processing unit in a base station according to an embodiment of the present invention
  • FIG. 5-3 is a schematic structural diagram 2 of a processing unit in a base station according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a carrier aggregation system according to an embodiment of the present invention.
  • the source base station sends a handover request message carrying carrier aggregation information to the target base station (target eNB); and the target base station aggregates the carrier according to the carrier aggregation information and the target base station configuration.
  • the information is used by the user equipment UE to determine the secondary cell; the target base station establishes a secondary cell or interacts with the base station where the secondary cell is located to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, and configures the secondary cell configuration information.
  • the bearer is sent to the source base station in a handover request response message; the source base station notifies the UE of the secondary cell configuration information.
  • the carrier aggregation information includes: candidate secondary cell information to be aggregated, UE capability information, and a secondary cell list configured by the source base station for the UE, where the candidate secondary cell information to be aggregated is the source base station according to the source base station.
  • the measurement result carried in the measurement report sent by the UE is determined.
  • the carrier aggregation information configured by the target base station includes: carrier aggregation enable information, aggregated cell information, and the like.
  • the secondary cell configuration information includes: a secondary cell addition/modification list, a secondary cell release list, and the like; the secondary cell addition/modification list and the secondary cell release list all include secondary cell identification information, where
  • the secondary cell in the cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected but not established in the secondary cell list of the source base station; the secondary cell configuration information is The target base station is determined according to a negotiation with a base station (SCell_eNB) to which the secondary cell belongs, where the SCell_eNB includes the target base station itself.
  • SCell_eNB base station
  • the source base station configures the secondary cell configuration information to the UE by using a radio resource control (RRC) connection reconfiguration.
  • RRC radio resource control
  • FIG. 1-1 is a schematic flowchart of a handover method according to an embodiment of the present invention. As shown in FIG. 1-1, the method includes:
  • Step 111 The target base station receives a handover request message that is sent by the source base station and carries carrier aggregation information.
  • Step 112 The target base station determines a secondary cell for the UE according to the carrier aggregation information and carrier aggregation information configured by the target base station;
  • Step 113 The target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell.
  • Step 114 The target base station sends the secondary cell configuration information in a handover request response message to the source base station.
  • the carrier aggregation information includes a secondary cell list configured by the active base station for the UE.
  • the step 113 includes:
  • the target base station determines that the secondary cell is not in the secondary cell list configured by the source base station for the UE, and sends a secondary cell setup request message to the SCell-eNB, where the secondary cell setup request message is used to trigger the SCell – the eNB establishes a secondary cell of the UE;
  • the target base station Determining, by the target base station, that the secondary cell sends a secondary cell switching request message to the SCell-eNB when the source base station is in the secondary cell list configured by the source, where the secondary cell switching request message is used to trigger the SCell – the eNB performs a secondary cell conversion;
  • the target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, including:
  • the target base station sends a secondary cell setup request message to all SCell-eNBs, where the secondary cell setup request message is used to trigger the SCell-eNB to establish a secondary cell of the UE;
  • the target base station receives a secondary cell setup response message that is sent by each SCell-eNB and carries the secondary cell configuration information, and determines secondary cell configuration information of the secondary cell according to the secondary cell setup response message.
  • the embodiment of the present invention further provides a handover method, which is applied to a carrier aggregation system, where the system includes at least a source base station and a target base station, and FIG. 1-2 is a schematic flowchart 2 of the implementation method of the handover method according to the embodiment of the present invention, as shown in FIG. 1-2.
  • the flow of the switching method in the embodiment of the present invention includes:
  • Step 101 The source base station sends a handover request message carrying carrier aggregation information to the target base station.
  • the carrier aggregation information includes: candidate secondary cell information to be aggregated, UE capability information, and a secondary cell list configured by the source base station for the UE, and the like, where the candidate secondary cell information to be aggregated is the source base station according to the source base station.
  • the measurement result carried in the measurement report sent by the UE is determined; the secondary cell list configured by the source base station for the UE includes a secondary cell index, a secondary cell identifier, and the like.
  • Step 102 The target base station determines a secondary cell for the UE according to the carrier aggregation information and the carrier aggregation information configured by the target base station.
  • the carrier aggregation information configured by the target base station includes carrier aggregation enable information, aggregated cell information, and the like.
  • Step 103 The target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell, and carries the secondary cell configuration information in a handover request response message. Giving the source base station;
  • the secondary cell configuration information includes a secondary cell addition/modification list, a secondary cell release list, and the like, and the secondary cell addition/modification list and the secondary cell release list all include secondary cell identification information, where the secondary cell
  • the secondary cell in the release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected but not established in the secondary cell list of the source base station;
  • Step 104 The source base station notifies the UE of the secondary cell configuration information.
  • the switching method of the embodiment of the present invention further includes:
  • Step A1 The UE sends a measurement report carrying a neighboring cell to the source base station;
  • Step A2 The source base station determines, according to the measurement report of the neighboring cell, a candidate secondary cell to be aggregated;
  • Step A3 The source base station combines the determined candidate secondary cell information to be aggregated, the UE capability information, and the secondary cell list configured by the source base station for the UE into carrier aggregation information, and carries the carrier aggregation information to the target. Sending, by the UE, a measurement report to the source base station in a handover request message of the base station;
  • the measurement report includes measurement results of the current cell and the local cell, and measurement results of the neighboring cell and the neighboring cell, where the measurement result includes reference signal received power (RSRP, Reference Signal Receiving Power), and reference signal received quality (SQ, Reference Signal Receiving Quality) and so on.
  • RSRP Reference Signal Receiving Power
  • SQ Reference Signal Receiving Quality
  • the target base station establishes a secondary cell or interacts with the base station where the secondary cell is located to establish a secondary cell, and determines the secondary cell configuration information of the secondary cell, which may include:
  • Step B1 When the secondary cell is not in the secondary cell list configured by the source base station, the target base station sends a secondary cell establishment request message to the SCell-eNB.
  • the secondary cell setup request message carries: an X2 application layer identifier (Old eNB UE X2AP ID) allocated by the source base station for the UE, a secondary cell identifier, and an evolved universal road base radio access network wireless access to be established.
  • E-RAB E-UT AN Radio Access Bearer
  • ABR Aggregate Maximum Bitrate
  • Step B2 The SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends a secondary cell setup response message carrying the secondary cell configuration information to the target base station.
  • the secondary cell setup response message carries: an X2 application layer identifier (Old eNB UE X2AP ID) allocated by the source base station for the UE, and an X2 application layer identifier allocated by the new eNB for the UE (New eNB UE X2AP ID), E-RAB establishes a successful list, E-RAB establishment failed list, dedicated physical configuration information, and the like.
  • an X2 application layer identifier (Old eNB UE X2AP ID) allocated by the source base station for the UE
  • an X2 application layer identifier allocated by the new eNB for the UE (New eNB UE X2AP ID)
  • E-RAB establishes a successful list
  • E-RAB establishment failed list dedicated physical configuration information, and the like.
  • the target base station establishes a secondary cell or interacts with the base station where the secondary cell is located to establish a secondary cell, and determines the secondary cell configuration information of the secondary cell, and may further include:
  • Step C1 When the source cell is in the secondary cell list configured by the UE, the target base station sends a secondary 'j, zone conversion request message to the SCell-eNB;
  • the secondary cell conversion request message carries: an eNB UE X2AP ID allocated by a base station to which the new primary cell belongs, an eNB UE X2AP ID allocated by a base station to which the secondary cell belongs, bearer information, and the like;
  • Step C2 The SCell-eNB performs a secondary cell handover and sends a secondary cell conversion response message to the target base station.
  • the secondary d, the zone conversion response message carries: Old eNB UE X2AP ID, New eNB UE X2AP ID, bearer information, and the like.
  • the target base station establishes a secondary cell or interacts with the base station where the secondary cell is located to establish a secondary cell, and determines the secondary cell configuration information of the secondary cell, and may include:
  • Step D1 The target base station sends a secondary cell setup request message to all the SCell-eNBs respectively.
  • the secondary cell establishment request message carries an eNB1 UE X2AP ID, bearer information, and the like;
  • Step D2 Each SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends a secondary cell setup response message carrying the secondary cell configuration information to the target base station.
  • the secondary d, the zone setup response message carries: Old eNB UE X2AP ID, New eNB UE X2AP ID, E-RAB established list successfully, E-RAB establishment failed list, dedicated physical configuration information, and the like.
  • the source base station notifying the UE by the secondary cell configuration information includes: Step E1: The source base station sends an RRC connection reconfiguration message to the UE according to the handover request response message;
  • Step E2 The UE performs RRC connection reconfiguration according to the RRC connection reconfiguration message, accesses the target base station, and sends an RRC connection reconfiguration complete message to the target base station.
  • the handover method of the embodiment of the present invention further includes:
  • Step F1 When the source base station determines that data back propagation is required, sending a sequence number status delivery message to the target base station;
  • Step F2 The target base station sends a path switch request message to the core network.
  • Step F3 After completing the conversion of the downlink path, the core network sends a path conversion request response message to the target base station.
  • the handover method of the embodiment of the present invention further includes: a process flow for the source base station to release the secondary cell of the UE; specifically, the source base station releasing the secondary cell of the UE includes:
  • Step G1 The source base station sends a secondary cell release message to the base station to which the secondary cell in the secondary cell release list belongs according to the secondary cell release list carried in the handover request response message.
  • the secondary cell configuration information specifically refers to a secondary cell release list
  • the secondary cell to be released in the secondary cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a primary cell that exists in the source base station a secondary cell in the secondary cell list that is selected but fails to be established;
  • the secondary cell release message includes: a message type, an 01d eNB UE X2AP ID, and a New eNB UE X2AP ID, and the like;
  • Step G2 After receiving the secondary cell release message, the base station to which the secondary cell belongs in the secondary cell release list releases the secondary cell of the UE.
  • the embodiment of the present invention has two processing modes for the secondary cell determined by the target base station, and each of the processing modes can independently implement switching in the carrier aggregation system. among them:
  • the first processing mode corresponds to the following first embodiment.
  • all the secondary cells determined by the target base station establish a secondary cell through the secondary cell establishment procedure, but the secondary cell selected by the source base station needs to be deleted, regardless of the source base station. Whether the selected secondary cell is selected again by the target base station.
  • the second processing mode corresponds to the following second embodiment.
  • the secondary cell determined by the target base station first distinguishes the type of the secondary cell determined by the target base station, and the primary selected secondary cell (the new secondary cell) And the secondary cell determined by the target base station belongs to the secondary cell selected by the source base station, that is, the secondary cell selected by the source base station is selected by the target base station as the secondary cell again,
  • the cell switching procedure converts all belonging primary cells.
  • the common points are: For the first selected secondary cell, the secondary cell is established through the secondary cell establishment procedure; their differences: for the source base station The selected secondary cell is again selected by the target base station as the secondary cell of the secondary cell, and the first processing mode is to change the primary cell to which the secondary cell belongs by first establishing the secondary cell of the target base station and then deleting the secondary cell of the source base station; The second processing mode is to implement the change of the primary cell to which the secondary cell belongs by using the secondary cell conversion process.
  • Embodiment 1 :
  • a secondary cell 1 (SCell l ) and a secondary cell 2 (SCell 2) are all in a secondary cell list configured by the source base station for the UE.
  • a secondary cell, and the target base station selects the SCell 1 and the SCell 3 as the secondary cells in the secondary cell list configured by the source base station for the UE;
  • the first handover method includes: Step 201: The source base station receives the measurement report sent by the UE.
  • the measurement report includes measurement results of the current cell and the local cell, and measurement results of the neighboring cell and the neighboring cell, and the measurement result includes RSRP, RSRQ, and the like.
  • Step 202 The source base station carries the carrier aggregation information in the measurement report in the handover request message, and sends the information to the target base station.
  • the carrier aggregation information includes: candidate secondary cell information to be aggregated, UE capability information, and a secondary cell list configured by the source base station for the UE, where
  • the candidate secondary cell information to be aggregated is determined by: the source base station performs filtering on power and reception quality of the neighboring cell carried by the measurement report, and determines according to the measured result of the filtered neighboring cell and the neighboring cell. Candidate secondary cell information to be aggregated;
  • the secondary cell list configured by the source base station for the UE includes a secondary cell index, a secondary cell identifier, and the like.
  • Step 203 The target base station determines a secondary cell for the user equipment UE according to the carrier aggregation information in the handover request message and the carrier aggregation information configured by the target base station.
  • the carrier aggregation information configured by the target base station is configured. It includes carrier aggregation enable information, aggregated cell information, and the like.
  • Step 204 The target base station sends a secondary cell setup request message to the base station SCell-eNB to which all the secondary cells belong.
  • the SCell_eNB may include a source base station and a target base station, because the SCell determined by the target base station may be included in a secondary cell configured by the source base station for the UE, and the target base station should also be directed to the source base station.
  • the secondary cell setup request message carries: Old eNB UE X2AP ID, auxiliary cell identifier, E-RAB list, AMBR, and the like.
  • Step 205 The SCell-eNB establishes a secondary cell of the UE according to the secondary cell setup request message, and sends a secondary cell setup response message carrying the secondary cell configuration information to the target base station.
  • the secondary cell configuration information includes a secondary cell addition/modification list, a secondary cell release list, and the like, and the secondary cell addition/modification list and the secondary cell release list all include secondary cell identification information, where the auxiliary
  • the secondary cell in the cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected in the secondary cell list of the source base station but is failed to be established;
  • the SCell_eNB may include a source base station
  • the zone setup response message carries: Old eNB UE X2AP ID, New eNB UE X2AP ID, E-AB established success list, E-RAB establishment failed list, dedicated physical configuration information, and the like;
  • Step 206 The target base station carries the secondary cell configuration information in a handover request response message, and sends the handover request response message to the source base station.
  • Step 207 The source base station sends an RRC connection reconfiguration message to the UE according to the handover request response message, to indicate that the UE switches to the target cell.
  • the RRC connection reconfiguration message carries: mobility control information, secondary cell configuration information, and the like.
  • Step 208 When the source base station determines that the uplink and downlink data needs to be back-transmitted, the source base station sends a sequence number state delivery message to the target base station.
  • the sequence number status delivery message carries an uplink packet data aggregation protocol (PDCP, Packet Data Convergence Protocol) sequence number 1, J, a hyper-frame number (HFN, Hyper Frame Number) receiver status, a downlink PDCP sequence number, and an HFN.
  • PDCP Packet Data Convergence Protocol
  • HFN Hyper Frame Number
  • the sender status is sent to the target base station to notify the target base station of the status information of the current data transmission, so that the target base station performs the status information according to the received transmission data. Transfer in order.
  • Step 209 The UE performs RRC connection reconfiguration according to the RRC connection reconfiguration message, accesses the target base station, and sends an RRC connection reconfiguration complete message to the target base station, to confirm Recognizing that the UE switches to the target cell;
  • Step 210 The target base station sends a path switch request message to the core network to request to convert a downlink GTP tunnel to a new universal radio packet service (GTP, GPRS Tunnelling Protocol) tunnel endpoint.
  • GTP GPRS Tunnelling Protocol
  • the core network includes a Mobility Management Entity (MME), a Serving Gateway (S-GW), and the like;
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Step 211 After completing the conversion of the downlink path, the core network sends a path conversion request response message to the target base station, to notify the target base station that the path conversion is successful.
  • the steps 208 to 211 belong to the process of data back-transmission, and the steps 208 to 211 are optional. Those skilled in the art can determine the data back-transmission process according to various prior art, and details are not described herein. .
  • Step 212 The target base station sends a UE context release message to the source base station.
  • the step 212 is optional, and those skilled in the art may determine according to various prior art, and details are not described herein again.
  • Step 213 The source base station configures a secondary cell in the secondary cell list for the UE.
  • Step 214 The base station 1 (SCell_eNB1) where the primary cell of the UE is located sends a secondary cell release message to the base station 2 (SCell_eNB2) where the secondary cell of the UE is located;
  • the secondary cell release message includes: a message type, an 01d eNB UE X2AP ID, and a New eNB UE X2AP ID, and the like;
  • Step 215 After receiving the secondary cell release message, the SCell-eNB2 locally releases the secondary cell of the UE.
  • Embodiment 2 After receiving the secondary cell release message, the SCell-eNB2 locally releases the secondary cell of the UE.
  • the secondary cell 1 (SCell l ) and the secondary cell 2 (SCell 2) are all in the secondary cell list configured by the source base station for the UE. a secondary cell, and the target base station selects SCell 1 in the secondary cell list configured by the source base station for the UE.
  • the SCell 3 is a secondary cell; the second switching method includes:
  • Step 301 The source base station receives the measurement report sent by the UE.
  • the measurement report includes measurement results of the current cell and the local cell, and measurement results of the neighboring cell and the neighboring cell, and the measurement result includes RSRP, RSRQ, and the like.
  • Step 302 The source base station carries the carrier aggregation information in the measurement report in the handover request message, and sends the information to the target base station.
  • the carrier aggregation information includes: candidate secondary cell information to be aggregated, UE capability information, and a secondary cell list configured by the source base station for the UE, where the candidate secondary cell information to be aggregated is determined by: The base station performs filtering on the power and the reception quality of the neighboring cell carried by the measurement report, and determines the candidate secondary cell information to be aggregated according to the filtered neighboring cell and the measurement result; the secondary cell list configured by the source base station for the UE includes Secondary cell index, secondary cell identifier, and the like.
  • Step 303 The target base station determines the SCell according to the carrier aggregation information in the handover request message and the carrier aggregation information configured by the target base station.
  • the carrier aggregation information configured by the target base station includes carrier aggregation enable information, aggregated cell information, and the like.
  • Step 304A If the determined SCell is not in the secondary cell list configured by the source base station for the UE, the target base station sends a secondary node, the area establishment request message to the base station SCell-eNB to which the secondary cell belongs; where the secondary cell is established.
  • the request message carries: Old eNB UE X2AP ID, secondary cell identifier, E-RAB list to be established, AMBR, and the like.
  • Step 304B If the determined SCell is in the secondary cell list configured by the source base station for the UE, the target base station sends a secondary cell conversion request message to the base station SCell-eNB to which the secondary cell belongs, requesting to convert the PCell to which the SCell belongs;
  • the eNB UE X2AP ID allocated by the eNB where the new PCell is located is carried in the secondary cell switching request message;
  • the SCell-eNB may include a source base station, because the SCell determined by the target base station may be included in the SCell configured by the source base station for the UE, and the target base station should also send the secondary cell switch to the source base station.
  • Step 305A The SCell-eNB sends a secondary cell setup response message to the target base station.
  • the secondary d the zone setup response message carries: Old eNB UE X2AP ID, New eNB UE X2AP ID, E-AB Establish a successful list, a list of failed E-RAB establishments, dedicated physical configuration information, etc.
  • Step 305B The SCell-eNB performs a secondary cell handover and sends a secondary cell conversion response message to the target base station.
  • the secondary d, the zone conversion response message carries an Old eNB UE X2AP ID, a New eNB UE X2AP ID, bearer information, and the like.
  • the SCell_eNB may include a source base station
  • Step 306 The target base station sends a handover request response message to the source base station.
  • the handover request response message carries mobility control information, secondary cell configuration information, other radio resource configurations, and the like.
  • the cell configuration information includes a secondary cell addition/modification list, a secondary cell deletion list, and the like, where the secondary cell addition/modification list and the secondary cell release list both include secondary cell identification information, where the secondary cell release list is
  • the secondary cell includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected but not established in the secondary cell list of the source base station;
  • Step 307 The source base station sends an RRC connection reconfiguration message to the UE according to the handover request response message.
  • the RRC connection reconfiguration message carries: mobility control information, secondary cell configuration information, other radio resource configurations, and the like;
  • Step 308 When the source base station determines that the uplink and downlink data needs to be back-transmitted, the source base station sends a sequence number state delivery message to the target base station.
  • the sequence number status delivery message carries information such as: a PDCP sequence number, an HFN receiver status, a downlink PDCP sequence number, and an HFN sender status;
  • Step 309 The UE performs RRC connection reconfiguration according to the RRC connection reconfiguration message, accesses the target base station, and sends an RRC connection reconfiguration complete message to the target base station, to confirm that the UE switches to the Target cell
  • Step 310 The target base station sends a path switch request message to the core network to request to convert the downlink GTP tunnel to the new GTP tunnel end point.
  • the core network includes an MME, an S-GW, and the like;
  • Step 311 After completing the conversion of the downlink path, the core network sends a path conversion request response message to the target base station, to notify the target base station that the path conversion is successful.
  • Step 312 The target base station sends a UE context release message to the source base station.
  • Step 313 The source base station sends a secondary cell release message to the base station 2 (SCell2_eNB2) to which the secondary cell 2 belongs.
  • the SCell2 is a secondary cell in the secondary cell list configured by the source base station for the UE, and the SCell2 is not selected as the secondary cell by the target base station, and therefore, the source base station sends a secondary cell release message to the SCell2_eNB2;
  • the secondary cell release message includes: a message type, an 01d eNB UE X2AP ID, and a New eNB UE X2AP ID, and the like;
  • Step 314 The SCell2_eNB2 releases the secondary cell of the UE.
  • the processing flow for releasing the secondary cell is included, and the common point is that when the secondary cell in the secondary cell list configured by the source base station is not selected as the secondary cell by the target base station,
  • the secondary cell release procedure performs release of the secondary cell.
  • the processing procedure in the first embodiment and the second embodiment is different, and the secondary cell needs to be released in the first embodiment.
  • the secondary cell does not need to be released. The difference between them is:
  • the secondary cell release process releases the secondary cells selected by all the source base stations.
  • only the secondary cells in the secondary cell list that are not selected by the target base station and are configured by the source base station for the UE are released by the secondary cell release procedure.
  • FIG. 4 is a schematic flowchart of another switching method according to an embodiment of the present invention. As shown in FIG. 4, the other switching method includes:
  • Step 401 The source base station receives the measurement report sent by the UE.
  • the measurement report includes measurement results of the current cell and the local cell, and measurement results of the neighboring cell and the neighboring cell, and the measurement result includes RSRP, RSRQ, and the like.
  • Step 402 The source base station carries the carrier aggregation information in the measurement report in the handover request message, and sends the information to the target base station.
  • the carrier aggregation information includes: candidate secondary cell information to be aggregated, UE capability information, and a secondary cell list configured by the source base station for the UE, where the candidate secondary cell information to be aggregated is determined by: The base station performs filtering on the power and the reception quality of the neighboring area of the measurement report, and determines the candidate secondary cell information to be aggregated according to the filtered neighboring area and the measurement result; the secondary cell list configured by the source base station for the UE includes Secondary cell index, secondary cell identifier, and the like.
  • Step 403 The target base station determines a secondary cell for the user equipment UE according to the carrier aggregation information in the handover request message and the carrier aggregation information configured by the target base station.
  • the carrier aggregation information configured by the target base station is configured. Including: carrier aggregation enable information, aggregated cell information, and the like.
  • Step 404 The target base station sends a secondary cell establishment request message, or a secondary cell establishment request message and a secondary cell conversion request message to the base station SCell-eNB to which the secondary cell belongs;
  • the SCell_eNB may include a source base station and a target base station, because the SCell determined by the target base station may be included in an SCell configured by the source base station for the UE, in which case,
  • the target base station should also send a secondary cell setup request message, or a secondary cell setup request message and a secondary cell switch request message to the source base station;
  • the target base station sends a secondary cell setup request message to the SCell-eNB, or sends a secondary cell setup request message and a secondary cell change request message, which are determined according to the selected handover mode, if the selected embodiment 1 is used.
  • the target base station sends a secondary cell setup request message to the SCell-eNB.
  • the target base station sends a secondary cell setup request message and a secondary cell change request message to the SCell-eNB.
  • the target base station sends a secondary cell setup request message and a secondary cell change request message to the SCell-eNB.
  • FIG. 3 and the second embodiment and details are not described herein again.
  • Step 405 The target base station sends a handover request response message to the source base station.
  • the handover request response message carries: mobility control information, secondary cell configuration information, other radio resource configuration, and the like.
  • the secondary cell configuration information includes a secondary cell addition/modification list, a secondary cell deletion list, and the like;
  • the target base station when the target base station sends a handover request response message to the source base station, the target base station does not wait for a response message sent by the base station SCell-eNB to which the secondary cell belongs, and the response message includes a secondary cell establishment response. a message, a secondary cell switching response message; and in the first embodiment and the second embodiment, after the target base station receives the response message sent by the base station SCell-eNB to which the secondary cell belongs, the target base station sends a handover to the source base station. Request a reply message.
  • Step 406 The source base station sends an RRC connection reconfiguration message to the UE according to the handover request response message, and performs handover and handover completion processing.
  • the RRC connection reconfiguration message carries the mobility control information, the secondary cell configuration information, and the like; the source base station performs the handover and the handover completion process belongs to the prior art, and details are not described herein.
  • Step 407 If there is a secondary cell that fails to process in the secondary cell determined by the target base station, update the secondary cell configuration information of the UE.
  • the secondary cell configuration information includes a secondary cell addition/modification list, a secondary cell release list, and the like, and the secondary cell addition/modification list and the secondary cell release list all include secondary cell identification information, where the auxiliary
  • the secondary cell in the cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected in the secondary cell list of the source base station but is failed to be established;
  • Step 408 The target base station sends an RRC connection reconfiguration message to the UE, to indicate that the UE switches to the target cell.
  • Step 409 The UE performs RRC connection reconfiguration according to the RRC connection reconfiguration message, accesses the target base station, and sends an RRC connection reconfiguration complete message to the target base station, to confirm that the UE switches to the Target cell.
  • the target base station when the target base station sends a handover request response message to the source base station, the target base station does not wait for a response message sent by the base station SCell-eNB to which the secondary cell belongs, and the response message includes a secondary cell establishment response. a message, a secondary cell switching response message; and in the first embodiment and the second embodiment, after the target base station receives the response message sent by the base station SCell-eNB to which the secondary cell belongs, the target base station sends a handover to the source base station. Request a reply message.
  • the embodiment of the present invention further provides a base station, where the base station is used as a target base station, and FIG. 5-1 is a schematic structural diagram of a base station according to an embodiment of the present invention, as shown in FIG. 5-1.
  • the base station 500 includes a receiving unit 501, a determining unit 502, a processing unit 503, and a transmitting unit 504, where:
  • the receiving unit 501 is configured to receive a handover request message that is sent by the source base station and that carries carrier aggregation information.
  • the determining unit 502 is configured to determine, according to the carrier aggregation information and the carrier aggregation information configured by the target base station, a secondary cell for the UE;
  • the processing unit 503 is configured to establish a secondary cell, or interact with the SCell-eNB to establish a secondary cell; and determine secondary cell configuration information of the secondary cell;
  • the sending unit 504 is configured to send the secondary cell configuration information to the source base station by being carried in a handover request response message.
  • the carrier aggregation information includes a secondary cell list configured by the active base station for the UE.
  • the processing unit 503 includes a determining module 531, a first sending module 532, and a first The second sending module 533 and the first receiving module 534, wherein:
  • the determining module 531 is configured to determine whether the secondary cell is in the secondary cell list configured by the source base station, if not, triggering the first sending module; when yes, triggering the second sending module;
  • the first sending module 532 is configured to send a secondary cell setup request message to the SCell-eNB, where the secondary cell setup request message is used to trigger the SCell-eNB to establish a secondary cell of the UE;
  • the second sending module 533 is configured to send a secondary cell switching request message to the SCell-eNB, where the secondary cell switching request message is used to trigger the SCell-eNB to perform secondary cell switching.
  • the first receiving module 534 is configured to receive a secondary cell conversion response message sent by the SCell-eNB, or receive a secondary cell setup response message that is sent by the SCell-eNB and carries the secondary cell configuration information, and according to the The secondary cell setup response message determines the secondary cell configuration information.
  • the processing unit 503 includes a third sending module 535 and a second receiving module 536, where:
  • the third sending module 535 is configured to send a secondary cell to all SCell-eNBs respectively. a request message, where the secondary cell setup request message is used to trigger the SCell-eNB to establish a secondary cell of the UE;
  • the second receiving module 536 is configured to receive a secondary cell setup response message that is sent by each SCell-eNB and that carries the secondary cell configuration information, and determine the secondary cell configuration information of the secondary cell according to the secondary cell setup response message. .
  • a carrier aggregation system is also provided in the embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a carrier aggregation system according to an embodiment of the present invention. As shown in FIG. 6, the carrier aggregation system is shown in FIG.
  • the target base station 602 is configured to determine, according to the carrier aggregation information and the carrier aggregation information configured by the target base station, a secondary cell for the user equipment; and, determining secondary cell configuration information of the secondary cell, and using the secondary cell
  • the configuration information is sent to the source base station in a handover request response message.
  • the secondary cell configuration information includes a secondary cell addition/modification list, a secondary cell release list, and the like, and the secondary cell addition/modification list and the secondary cell release list all include secondary cell identification information, where the auxiliary
  • the secondary cell in the cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that is selected in the secondary cell list of the source base station but is failed to be established;
  • the system further includes: a base station SCell_eNB to which the secondary cell belongs;
  • the SCell-eNB is configured to establish a secondary cell of the UE according to the secondary cell setup request message, and send a secondary cell setup response message carrying the secondary cell configuration information to the target base station; and perform secondary cell conversion and The target base station sends a secondary cell conversion response message.
  • the target base station is further configured to: when the secondary cell is not in the secondary cell list configured by the source base station for the UE, send a secondary cell establishment request message to the SCell-eNB; And determining, when the secondary cell is in the secondary cell list configured by the source base station, the target base station sends a secondary cell handover request message to the SCell-eNB to request to switch the primary cell to which the secondary cell belongs.
  • the system further includes: a base station SCell_eNB to which the secondary cell belongs;
  • the SCell-eNB is configured to establish a secondary cell of the UE according to the secondary cell setup request message, and send a secondary cell setup response message carrying the secondary cell configuration information to the target base station.
  • the target base station is further configured to send a secondary cell setup request message to all of the SCell-eNBs, respectively.
  • the system further includes a user equipment UE;
  • the user equipment UE is configured to send a measurement report carrying the neighboring cell to the source base station.
  • the source base station is configured to determine, according to the measurement report of the neighboring cell, the secondary cell to be aggregated, and the determined candidate secondary cell information to be aggregated, the UE capability information, and the auxiliary configured by the source base station for the UE.
  • the cell list constitutes carrier aggregation information, and the carrier aggregation information is carried in a handover request message sent to the target base station.
  • the source base station is further configured to: send, by the source base station, an RRC connection reconfiguration message to the UE according to the handover request response message;
  • the UE is further configured to perform RRC connection reconfiguration according to the RRC connection reconfiguration message, access the target base station, and send an RRC connection reconfiguration complete message to the target base station.
  • the system further comprises a core network
  • the source base station is further configured to: when it is determined that data back propagation is required, send a sequence number state delivery message to the target base station;
  • the target base station is further configured to send a path switch request message to the core network
  • the core network is configured to send a path to the target base station after completing the conversion of the downlink path. Convert request response message.
  • the system further includes a base station to which the secondary cell in the secondary cell release list belongs; the source base station is further configured to release the list to the secondary cell according to the secondary cell release list carried in the handover request response message.
  • the secondary cell to which the secondary cell belongs sends a secondary cell release message, where the secondary cell in the secondary cell release list includes: a secondary cell that is not selected in the secondary cell list of the source base station, and a secondary cell that exists in the source base station a secondary cell in the cell list that is selected but fails to be established;
  • the base station to which the secondary cell in the secondary cell release list belongs is configured to release the secondary cell of the UE after receiving the secondary cell release message.
  • the function of the base station of the aggregated carrier system in the embodiment of the present invention can be understood by referring to the related description of the foregoing handover method, where the base station includes the source base station, the target base station, and the base station and the secondary cell release list where the secondary cell is located.
  • the functions of the receiving unit, the determining unit, the processing unit, and the sending unit in the base station of the embodiment of the present invention, and the functions of each module included in the processing unit can be implemented by a processor in the base station, It can be realized by a specific logic circuit.
  • the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).
  • the above switching method applied to the target base station is implemented in the form of a software function module, and is sold or used as a separate product, it may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product.
  • the computer software product is stored in a storage medium and includes a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is implemented to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read only memory (ROM), a magnetic disk or an optical disk, and the like.
  • the media of the sequence code are not limited to any specific combination of hardware and software.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform the switching applied to the target base station provided in the embodiments of the present invention. method.
  • the target base station receives the handover request message that is sent by the source base station and carries the carrier aggregation information; the target base station determines the secondary cell for the UE according to the carrier aggregation information and the carrier aggregation information configured by the target base station; The target base station establishes a secondary cell, or interacts with the SCell-eNB to establish a secondary cell, and determines secondary cell configuration information of the secondary cell; the target base station sends the secondary cell configuration information to a handover request response message.
  • the source base station is provided; in this way, the handover process during carrier aggregation between the base stations can be implemented, thereby expanding the application scenario of carrier aggregation.

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Abstract

本发明公开了一种切换方法,所述方法包括:目标基站接收源基站发送的承载有载波聚合信息的切换请求消息;所述目标基站根据所述载波聚合信息和所述目标基站配置的载波聚合信息为UE确定辅小区;所述目标基站建立辅小区,或,与SCell_eNB进行交互建立辅小区,并确定所述辅小区的辅小区配置信息;所述目标基站将所述辅小区配置信息承载于切换请求应答消息中发送给所述源基站。本发明同时还公开了一种基站、载波聚合系统和存储介质。

Description

一种切换方法、 基站、 载波聚合系统、 存储介质 技术领域
本发明涉及长期演进( LTE, Long Term Evolution )系统中的切换技术, 尤其涉及一种切换方法、 基站、 载波聚合系统、 存储介质。 背景技术
蜂窝式移动通信系统引入载波聚合技术后, 用户设备 (UE, User Equipment ) 可以从多个载波上得到基站(NB, NodeB )的服务, 成倍地提 高了数据传输速率, 其中 NB包括演进的通用路基无线接入网节点 (eNB, E-UTRAN NodeB )。 当釆用载波聚合的 UE发生移动时, 其切换处理流程较 普通的单一服务载波时更为复杂, 主要体现在切换过程中主小区 (PCell, Primary Cell )与辅小区 ( SCell, Secondary Cell )之间的切换、 辅小区的增 加 /修改 /删除等。
当前协议仅支持基站内载波聚合及其切换, 但没有考虑基站间载波聚 合时的切换处理, 影响了载波聚合的应用场景。 发明内容
有鉴于此, 本发明实施例为解决现有技术中存在的问题而提供一种切 换方法、 基站、 载波聚合系统和存储介质, 能够实现在基站间载波聚合时 的切换处理, 从而扩展了载波聚合的应用场景。
本发明实施例的技术方案是这样实现的:
第一方面, 本发明实施例提供一种切换方法, 所述方法包括: 目标基站接收源基站发送的承载有载波聚合信息的切换请求消息; 所述目标基站根据所述载波聚合信息和所述目标基站配置的载波聚 合信息为用户设备 UE确定辅小区;
所述目标基站建立辅小区, 或, 与所述辅小区所在基站 SCell— eNB 进行交互建立辅小区, 并确定所述辅小区的辅小区配置信息;
所述目标基站将所述辅小区配置信息承载于切换请求应答消息中发 送给所述源基站。
优选地,所述载波聚合信息中包括有源基站为所述 UE配置的辅小区 列表;
对应地, 所述目标基站建立辅小区, 或, 与所述 SCell— eNB进行交 互建立辅小区, 并确定所述辅小区的辅小区配置信息, 包括:
所述目标基站确定所述辅小区不在源基站为所述 UE 配置的辅小区 列表中时, 向所述 SCell— eNB发送辅小区建立请求消息, 所述辅小区建 立请求消息用于触发所述 SCell— eNB建立所述 UE的辅小区;
所述目标基站确定所述辅小区在源基站为所述 UE 配置的辅小区列 表中时, 向所述 SCell— eNB发送辅小区转换请求消息, 所述辅小区转换 请求消息用于触发所述 SCell— eNB执行辅小区转换;
所述目标基站接收所述 SCell— eNB发送的辅小区转换响应消息, 或 者接收所述 SCell— eNB发送的承载有辅小区配置信息的辅小区建立响应 消息, 并才艮据所述辅小区建立响应消息确定辅小区配置信息。
优选地, 所述目标基站建立辅小区, 或与所述 SCell— eNB进行交互 建立辅小区, 并确定所述辅小区的辅小区配置信息, 包括:
所述目标基站分别向所有 SCell— eNB发送辅小区建立请求消息, 所 述辅小区建立请求消息用于触发 SCell— eNB建立所述 UE的辅小区;
所述目标基站接收各所述 SCell— eNB发送的承载有辅小区配置信息的 辅小区建立响应消息, 根据所述辅小区建立响应消息确定所述辅小区的辅 小区配置信息。 第二方面, 本发明实施例提供了一种切换方法, 所述方法包括: 源基站将承载有载波聚合信息的切换请求消息发送给目标基站; 所述目标基站根据所述载波聚合信息和所述目标基站配置的载波聚合 信息为用户设备 UE确定辅小区;
所述目标基站建立辅小区或与所述辅小区所在基站进行交互建立辅小 区, 及确定所述辅小区的辅小区配置信息, 并将所述辅小区配置信息承载 于切换请求应答消息中发送给所述源基站;
所述源基站将所述辅小区配置信息通知所述 UE。
优选地,所述载波聚合信息中包括有源基站为所述 UE配置的辅小区 列表; 对应地, 所述目标基站建立辅小区或与所述辅小区所在基站进行 交互建立辅小区, 及确定所述辅小区的辅小区配置信息, 包括:
所述目标基站确定所述辅小区不在源基站为所述 UE 配置的辅小区列 表中时, 所述目标基站向所述 SCell— eNB发送辅小区建立请求消息; 所述 SCell— eNB根据所述辅小区建立请求消息建立所述 UE的辅小区,并向所述 目标基站发送承载有辅小区配置信息的辅小区建立响应消息; 或者,
所述目标基站确定所述辅小区在源基站为所述 UE 配置的辅小区列表 中时, 所述目标基站向所述 SCell— eNB 发送辅小区转换请求消息; 所述 SCell— eNB执行辅小区转换并向所述目标基站发送辅小区转换响应消息。
优选地, 所述目标基站建立辅小区或与所述辅小区所在基站进行交互 建立辅小区, 及确定所述辅小区的辅小区配置信息, 包括:
所述目标基站分别向所有 SCell— eNB发送辅小区建立请求消息; 各 SCell— eNB根据所述辅小区建立请求消息建立所述 UE的辅小区,并 向所述目标基站发送承载有辅小区配置信息的辅小区建立响应消息。
优选地, 在所述源基站将承载有载波聚合信息的切换请求消息发送给 目标基站之前, 所述方法还包括: 所述源基站接收所述 UE发送的承载有邻小区的测量报告; 所述源基站根据所述邻小区的测量报告确定待聚合的候选辅小区; 所述源基站将所确定的待聚合的候选辅小区信息、 UE能力信息、 以及 源基站为 UE配置的辅小区列表组成载波聚合信息,并将所述载波聚合信息 承载于发送给目标基站的切换请求消息中。
优选地, 所述源基站将所述辅小区配置信息通知所述 UE, 包括: 所述源基站根据所述切换请求应答消息,向所述 UE发送无线资源控制
RRC连接重配消息。
优选地, 所述方法还包括:
所述源基站根据所述切换请求应答消息中承载的辅小区释放列表, 向 所述辅小区释放列表中的辅小区所属的基站发送辅小区释放消息; 其中, 所述辅小区释放列表中的辅小区包括: 所述源基站的辅小区列表中未被选 中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建立失败的辅 小区; 所述辅小区释放列表中的辅小区所属的基站接收到所述辅小区释放 消息后, 释放所述 UE的辅小区。
第三方面, 本发明实施例提供一种基站, 所述基站作为目标基站, 所述目标基站包括接收单元、 确定单元、 处理单元和发送单元, 其中: 所述接收单元, 配置为接收源基站发送的承载有载波聚合信息的切 换请求消息;
所述确定单元, 配置为根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为用户设备 UE确定辅小区;
所述处理单元, 配置为建立辅小区, 或与所述辅小区所在基站进行 交互建立辅小区; 以及, 确定所述辅小区的辅小区配置信息;
所述发送单元, 配置为将所述辅小区配置信息承载于切换请求应答 消息中发送给所述源基站。 优选地,所述载波聚合信息中包括有源基站为所述 UE配置的辅小区 列表;
对应地, 所述处理单元, 包括判断模块、 第一发送模块、 第二发送 模块和第一接收模块, 其中:
所述判断模块,配置为判断所述辅小区是不是在源基站为所述 UE配 置的辅小区列表中时, 否时, 触发第一发送模块; 是时, 触发第二发送 模块;
所述第一发送模块, 配置为向所述 SCell— eNB发送辅小区建立请求 消息, 所述辅小区建立请求消息用于触发所述 SCell— eNB 建立所述 UE 的辅小区;
所述第二发送模块, 配置为向所述 SCell— eNB发送辅小区转换请求 消息, 所述辅小区转换请求消息用于触发所述 SCell— eNB执行辅小区转 换;
所述第一接收模块, 配置为接收所述 SCell— eNB发送的辅小区转换 响应消息, 或者接收所述 SCell— eNB发送的承载有辅小区配置信息的辅 小区建立响应消息, 并根据所述辅小区建立响应消息确定辅小区配置信 息。
优选地, 所述处理单元包括第三发送模块和第二接收模块, 其中: 所述第三发送模块, 配置为分别向所有 SCell— eNB发送辅小区建立 请求消息, 所述辅小区建立请求消息用于触发 SCell— eNB 建立所述 UE 的辅小区;
所述第二接收模块, 配置为接收各所述 SCell— eNB发送的承载有辅小 区配置信息的辅小区建立响应消息, 根据所述辅小区建立响应消息确定所 述辅小区的辅小区配置信息。
第四方面, 本发明实施例提供的一种载波聚合系统, 所述系统包括源 基站、 目标基站, 其中:
所述源基站, 配置为将承载有载波聚合信息的切换请求消息发送给目 标基站; 以及, 将所述辅小区配置信息通知给用户设备 UE;
所述目标基站, 配置为根据所述载波聚合信息和所述目标基站配置的 载波聚合信息为所述 UE确定辅小区; 以及,建立辅小区或与所述辅小区所 在基站进行交互建立辅小区, 及确定所述辅小区的辅小区配置信息, 并将 所述辅小区配置信息承载于切换请求应答消息中发送给所述源基站。
优选地, 所述系统还包括: 辅小区所属的基站 SCell— eNB;
所述 SCell— eNB,配置为根据所述辅小区建立请求消息建立所述 UE的 辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应 消息; 以及, 执行辅小区转换并向所述目标基站发送辅小区转换响应消息; 此时, 所述目标基站, 还配置为确定所述辅小区不在源基站为所述 UE 配置的辅小区列表中时, 向所述 SCell— eNB发送辅小区建立请求消息; 以 及,确定所述辅小区在源基站为所述 UE配置的辅小区列表中时,所述目标 基站向所述 SCell— eNB发送辅小区转换请求消息, 以请求转换辅小区所归 属的主小区。
优选地, 所述系统还包括: 辅小区所属的基站 SCell— eNB;
所述 SCell— eNB,配置为根据所述辅小区建立请求消息建立所述 UE的 辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应 消息;
所述目标基站, 还配置为分别向所有 SCell— eNB发送辅小区建立请求 消息。
优选地, 所述系统还包括辅小区释放列表中的辅小区所属的基站; 所述源基站, 配置为根据所述切换请求应答消息中承载的辅小区释放 列表, 向所述辅小区释放列表中的辅小区所属的基站发送辅小区释放消息; 其中, 所述辅小区释放列表中的辅小区包括: 所述源基站的辅小区列 表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建 立失败的辅小区;
所述辅小区释放列表中的辅小区所属的基站, 配置为接收所述辅小区 释放消息后, 释放所述 UE的辅小区。
第五方面, 本发明实施例提供一种计算机可读存储介质, 所述计算 机存储介质中存储有计算机可执行指令, 该计算机可执行指令用于执行 上述的切换方法。
本发明实施例提供的一种切换方法、 基站、 载波聚合系统、 存储介 质, 其中, 目标基站接收源基站发送的承载有载波聚合信息的切换请求 消息; 所述目标基站根据所述载波聚合信息和所述目标基站配置的载波 聚合信息为 UE确定辅小区;所述目标基站建立辅小区,或,与 SCell— eNB 进行交互建立辅小区, 并确定所述辅小区的辅小区配置信息; 所述目标 基站将所述辅小区配置信息承载于切换请求应答消息中发送给所述源基 站; 如此, 能够实现在基站间载波聚合时的切换处理, 从而扩展了载波 聚合的应用场景。 附图说明
图 1-1为本发明实施例切换方法的实现流程示意图一;
图 1-2为本发明实施例切换方法的实现流程示意图二;
图 2为本发明实施例第一种切换方法的流程示意图;
图 3为本发明实施例第二种切换方法的流程示意图;
图 4为本发明实施例另一种切换方法的流程示意图;
图 5-1为本发明实施例基站的组成结构示意图;
图 5-2为本发明实施例基站中处理单元的组成结构示意图一; 图 5-3为本发明实施例基站中处理单元的组成结构示意图二; 图 6为本发明实施例载波聚合系统的组成结构示意图。 具体实施方式
本发明实施例中, 源基站(源 eNB )将承载有载波聚合信息的切换请 求消息发送给目标基站(目标 eNB ); 所述目标基站根据所述载波聚合信息 和所述目标基站配置的载波聚合信息为用户设备 UE确定辅小区;所述目标 基站建立辅小区或与所述辅小区所在基站进行交互建立辅小区, 及确定所 述辅小区的辅小区配置信息, 并将所述辅小区配置信息承载于切换请求应 答消息中发送给所述源基站; 所述源基站将所述辅小区配置信息通知所述 UE。
这里, 所述载波聚合信息包括: 待聚合的候选辅小区信息、 UE能力信 息、 以及源基站为 UE配置的辅小区列表等, 其中, 所述待聚合的候选辅小 区信息是所述源基站根据所述 UE发送的测量报告中承载的测量结果确定 的。
这里, 所述目标基站配置的载波聚合信息包括: 载波聚合使能信息、 聚合的小区信息等。
这里, 所述辅小区配置信息包括: 辅小区增加 /修改列表、 辅小区释放 列表等; 所述辅小区增加 /修改列表和所述辅小区释放列表中都包括有辅小 区标识信息, 其中, 辅小区释放列表中的辅小区包括: 源基站的辅小区列 表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建 立失败的辅小区; 所述辅小区配置信息是所述目标基站根据与所述辅小区 所属的基站(SCell— eNB )进行协商确定的, 这里, 所述 SCell— eNB包括目 标基站本身。
这里, 所述源基站通过无线资源控制 (RRC, Radio Resource Control ) 连接重配将所述辅小区配置信息配置给所述 UE。
下面结合附图和具体实施例对本发明的技术方案进一步详细阐述。 本发明实施例提供一种切换方法,应用于目标基站侧, 图 1-1为本发明 实施例切换方法的实现流程示意图, 如图 1-1所示, 该方法包括:
步骤 111, 目标基站接收源基站发送的承载有载波聚合信息的切换请 求消息;
步骤 112,所述目标基站根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为 UE确定辅小区;
步骤 113, 所述目标基站建立辅小区, 或, 与 SCell— eNB进行交互建 立辅小区, 并确定所述辅小区的辅小区配置信息;
步骤 114,所述目标基站将所述辅小区配置信息承载于切换请求应答 消息中发送给所述源基站。
这里,所述载波聚合信息中包括有源基站为所述 UE配置的辅小区列 表; 对应地, 所述步骤 113, 包括:
所述目标基站确定所述辅小区不在源基站为所述 UE 配置的辅小区 列表中时, 向所述 SCell— eNB发送辅小区建立请求消息, 所述辅小区建 立请求消息用于触发所述 SCell— eNB建立所述 UE的辅小区;
所述目标基站确定所述辅小区在源基站为所述 UE 配置的辅小区列 表中时, 向所述 SCell— eNB发送辅小区转换请求消息, 所述辅小区转换 请求消息用于触发所述 SCell— eNB执行辅小区转换;
所述目标基站接收所述 SCell— eNB发送的辅小区转换响应消息, 或 者接收所述 SCell— eNB发送的承载有辅小区配置信息的辅小区建立响应 消息, 并才艮据所述辅小区建立响应消息确定辅小区配置信息。
这里, 所述目标基站建立辅小区, 或与 SCell— eNB进行交互建立辅 小区, 并确定所述辅小区的辅小区配置信息, 包括:
所述目标基站分别向所有 SCell— eNB发送辅小区建立请求消息, 所 述辅小区建立请求消息用于触发 SCell— eNB建立所述 UE的辅小区; 所述目标基站接收各所述 SCell— eNB发送的承载有辅小区配置信息 的辅小区建立响应消息, 根据所述辅小区建立响应消息确定所述辅小区 的辅小区配置信息。 本发明实施例再提供一种切换方法, 应用于载波聚合系统中, 该系统 至少包括源基站和目标基站,图 1-2为本发明实施例切换方法的实现流程示 意图二, 如图 1-2所示, 本发明实施例切换方法的流程, 包括:
步骤 101 :源基站将承载有载波聚合信息的切换请求消息发送给目标基 站;
这里, 所述载波聚合信息包括: 待聚合的候选辅小区信息、 UE能力信 息、 以及源基站为 UE配置的辅小区列表等; 其中, 所述待聚合的候选辅小 区信息为所述源基站根据 UE发送的测量报告中承载的测量结果确定的;所 述源基站为 UE配置的辅小区列表包括辅小区索引、 辅小区标识等。
步骤 102:所述目标基站根据所述载波聚合信息和所述目标基站配置的 载波聚合信息为 UE确定辅小区;
这里, 所述目标基站配置的载波聚合信息包括载波聚合使能信息、 聚 合的小区信息等。
步骤 103: 所述目标基站建立辅小区,或与 SCell— eNB进行交互建立辅 小区, 及确定所述辅小区的辅小区配置信息, 并将所述辅小区配置信息承 载于切换请求应答消息中发送给所述源基站;
这里, 所述辅小区配置信息包括辅小区增加 /修改列表、 辅小区释放列 表等, 所述辅小区增加 /修改列表和所述辅小区释放列表中都包括有辅小区 标识信息, 其中, 辅小区释放列表中的辅小区包括: 源基站的辅小区列表 中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建立 失败的辅小区;。
步骤 104: 所述源基站将所述辅小区配置信息通知给所述 UE。 在所述步骤 101之前, 本发明实施例切换方法还包括:
步骤 A1 : 所述 UE向所述源基站发送承载有邻小区的测量报告; 步骤 A2: 所述源基站根据所述邻小区的测量报告确定待聚合的候选辅 小区;
步骤 A3: 所述源基站将所确定的待聚合的候选辅小区信息、 UE能力 信息、 以及源基站为 UE配置的辅小区列表组成载波聚合信息,并将所述载 波聚合信息承载于发送给目标基站的切换请求消息中所述 UE 向所述源基 站发送测量报告;
这里, 所述测量报告包括本小区及本小区的测量结果、 邻小区及邻小 区的测量结果, 所述测量结果包括参考信号接收功率 (RSRP, Reference Signal Receiving Power )、 参考信号接收质量 ( S Q , Reference Signal Receiving Quality )等。
优选地, 所述目标基站建立辅小区或与所述辅小区所在基站进行交互 建立辅小区, 以及确定所述辅小区的辅小区配置信息, 可以包括:
步骤 B1 : 所述辅小区不在源基站为所述 UE配置的辅小区列表中时, 所述目标基站向所述 SCell— eNB发送辅小区建立请求消息;
这里, 所述辅小区建立请求消息中承载有: 源基站为 UE分配的 X2应 用层标识( Old eNB UE X2AP ID )、 辅助小区标识、 待建立的演进的通用路 基无线接入网无线接入 7 载(E-RAB, E-UT AN Radio Access Bearer ) 列 表、 聚合最大比特速率 (AMBR, Aggregate Maximum Bitrate )等。
步骤 B2: 所述 SCell— eNB根据所述辅小区建立请求消息建立所述 UE 的辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响 应消息;
这里, 所述辅小区建立响应消息中承载有: 源基站为 UE分配的 X2应 用层标识( Old eNB UE X2AP ID )、新 eNB为 UE分配的 X2应用层标识( New eNB UE X2AP ID ), E-RAB建立成功的列表、 E-RAB建立失败的列表、 专 用物理配置信息等。
优选地, 所述目标基站建立辅小区或与所述辅小区所在基站进行交互 建立辅小区, 以及确定所述辅小区的辅小区配置信息, 还可以包括:
步骤 C1 : 所述辅小区在源基站为 UE配置的辅小区列表中时, 所述目 标基站向所述 SCell— eNB发送辅 ' j、区转换请求消息;
这里, 所述辅小区转换请求消息中承载有: 新主小区所属的基站分配 的 eNB UE X2AP ID、 辅小区所属的基站分配的 eNB UE X2AP ID、 承载信 息等;
步骤 C2: 所述 SCell— eNB执行辅小区转换并向所述目标基站发送辅小 区转换响应消息;
这里,所述辅 d、区转换响应消息中承载有: Old eNB UE X2AP ID、 New eNB UE X2AP ID, 承载信息等。
优选地, 所述目标基站建立辅小区或与所述辅小区所在基站进行交互 建立辅小区, 以及确定所述辅小区的辅小区配置信息, 又可以包括:
步骤 D1 : 所述目标基站分别向所有所述 SCell— eNB发送辅小区建立请 求消息;
这里, 所述辅小区建立请求消息中承载有 eNBl UE X2AP ID、 承载信 息等;
步骤 D2: 各 SCell— eNB根据所述辅小区建立请求消息建立所述 UE的 辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应 消息。
这里,所述辅 d、区建立响应消息中承载有: Old eNB UE X2AP ID、 New eNB UE X2AP ID、 E-RAB建立成功的列表、 E-RAB建立失败的列表、 专 用物理配置信息等。 优选地, 所述源基站所述辅小区配置信息通知所述 UE, 包括: 步骤 E1:所述源基站根据所述切换请求应答消息,向所述 UE发送 RRC 连接重配消息;
步骤 E2: 所述 UE根据所述 RRC连接重配消息执行 RRC连接重配, 接入所述目标基站, 并向所述目标基站发送 RRC连接重配完成消息。
优选地, 本发明实施例的切换方法还包括:
步骤 F1 : 所述源基站确定需要数据反传时, 向所述目标基站发送序列 号状态传递消息;
步骤 F2: 所述目标基站向核心网发送路径转换请求消息;
步骤 F3: 所述核心网完成转换下行路径后, 向所述目标基站发送路径 转换请求应答消息。
优选地,本发明实施例的切换方法还包括: 所述源基站释放 UE的辅小 区的处理流程; 具体地, 所述源基站释放 UE的辅小区, 包括:
步骤 G1 : 所述源基站根据所述切换请求应答消息中承载的辅小区释放 列表, 向所述辅小区释放列表中的辅小区所属的基站发送辅小区释放消息; 这里, 所述辅小区配置信息包括辅小区增加 /修改列表、 辅小区释放列 表等; 所述辅小区增加 /修改列表和所述辅小区释放列表中包括辅小区标识 信息;
这里, 所述辅小区配置信息具体是指辅小区释放列表, 所述辅小区释 放列表中要释放的辅小区包括: 源基站的辅小区列表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建立失败的辅小区;
这里, 所述辅小区释放消息包括: 消息类型、 01d eNB UE X2AP ID和 New eNB UE X2AP ID等;
步骤 G2: 所述辅小区释放列表中的辅小区所属的基站接收到所述辅小 区释放消息后, 释放 UE的辅小区。 下面结合具体的实施例, 来详细说明本发明实施例切换方法的处理流 程。
本发明实施例对于目标基站确定的辅小区有两种处理方式, 每一种处 理方式都可以独立实现载波聚合系统中的切换。 其中:
第一种处理方式对应于下面的实施例一, 第一种处理方式对于目标基 站确定的所有辅小区都通过辅小区建立流程来建立辅小区, 但是需要删除 源基站选择的辅小区, 不管源基站选择的辅小区是否再次被目标基站所选 中。
第二种处理方式对应于下面的实施例二, 第二中处理方式中, 针对目 标基站确定的辅小区, 首先区别目标基站确定的辅小区的类型, 对于初次 被选择的辅小区 (新辅小区), 通过辅小区建立流程来建立辅小区; 而对于 目标基站确定的辅小区属于源基站选择的辅小区, 也就是说, 源基站选择 的辅小区再次被目标基站选中作为辅小区, 则通过辅小区转换流程转换所 有归属的主小区。
从上述的第一种处理方式和第二种处理方式可以看出, 它们的共同点 是: 对于初次选择的辅小区, 都是通过辅小区建立流程建立辅小区; 它们 的不同点: 对于源基站选择的辅小区再次被目标基站选中作为辅小区的辅 小区, 第一种处理方式是通过先建立目标基站的辅小区再删除源基站的辅 小区的方式, 改变辅小区所归属的主小区; 而第二中处理方式是通过辅小 区转换流程实现辅小区所归属主小区的改变。 实施例一:
图 2为本发明实施例第一种切换方法的流程示意图, 如图 2所示, 辅 小区 1 ( SCell l )、 辅小区 2 ( SCell 2 )均为源基站为 UE配置的辅小区列表 中的辅小区, 并且目标基站选择源基站为 UE配置的辅小区列表中 SCell 1、 以及 SCell 3为辅小区; 所述第一种切换方法, 包括: 步骤 201 : 源基站接收 UE发送的测量报告;
这里, 所述测量报告包括本小区及本小区的测量结果、 邻小区及邻小 区的测量结果, 所述测量结果包括 RSRP、 RSRQ等。
步骤 202:所述源基站将测量报告中的载波聚合信息承载于切换请求消 息中, 发送给目标基站;
所述载波聚合信息包括: 待聚合的候选辅小区信息、 UE能力信息、 以 及源基站为 UE配置的辅小区列表等; 其中,
所述待聚合的候选辅小区信息是通过以下方式确定的: 源基站对所述 测量报告承载的邻小区进行功率和接收质量等的过滤, 并根据过滤后的邻 小区及邻小区的测量结果确定待聚合的候选辅小区信息;
所述源基站为 UE配置的辅小区列表包括辅小区索引、 辅小区标识等。 步骤 203: 所述目标基站根据所述切换请求消息中的所述载波聚合信 息、 和所述目标基站配置的载波聚合信息为用户设备 UE确定辅小区; 这里, 所述目标基站配置的载波聚合信息包括载波聚合使能信息、 聚 合的小区信息等。
步骤 204,所述目标基站分别向所有辅小区所属的基站 SCell— eNB发送 辅小区建立请求消息;
这里, 所述 SCell— eNB可能包括源基站和目标基站, 这是由于所述目 标基站确定的 SCell可能包括在源基站为 UE配置的辅小区中, 这时, 所述 目标基站也应该向源基站发送辅小区建立请求消息;
这里, 所述辅小区建立请求消息中承载有: Old eNB UE X2AP ID、 辅 助小区标识、 E-RAB列表、 AMBR等。
步骤 205: 所述 SCell— eNB根据所述辅小区建立请求消息建立所述 UE 的辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响 应消息; 这里, 所述辅小区配置信息包括辅小区增加 /修改列表、 辅小区释放列 表等, 所述辅小区增加 /修改列表和所述辅小区释放列表中都包括辅小区标 识信息, 其中, 所述辅小区释放列表中的辅小区包括: 源基站的辅小区列 表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建 立失败的辅小区;
这里, 对应于步骤 204, 所述 SCell— eNB可能包括源基站;
这里,所述辅 d、区建立响应消息中承载有: Old eNB UE X2AP ID、 New eNB UE X2AP ID、 E- AB建立成功的列表、 E-RAB建立失败的列表、 专 用物理配置信息等;
步骤 206:所述目标基站将所述辅小区配置信息承载于切换请求应答消 息, 并向所述源基站发送所述切换请求应答消息;
步骤 207 :所述源基站根据所述切换请求应答消息向所述 UE发送 RRC 连接重配消息, 以指示所述 UE向所述目标小区切换;
这里, 所述 RRC连接重配消息中承载有: 移动性控制信息、 辅小区配 置信息等。
步骤 208: 所述源基站确定上下行数据需要进行反传时, 所述源基站向 所述目标基站发送序列号状态传递消息;
这里,所述序列号状态传递消息承载有上行分组数据聚合协议 ( PDCP, Packet Data Convergence Protocol )序歹1 J号、 超贞号 ( HFN, Hyper Frame Number )接收者状态、 下行 PDCP序列号以及 HFN发送者状态等信息; 所 述源基站向所述目标基站发送序列号状态传递消息是为了通知所述目标基 站当前数据传输的状态信息, 以便所述目标基站根据接收到的传输数据的 状态信息进行按序传输。
步骤 209: 所述 UE根据所述 RRC连接重配消息执行 RRC连接重配, 接入所述目标基站, 并向所述目标基站发送 RRC连接重配完成消息, 以确 认所述 UE切换到所述目标小区;
步骤 210: 所述目标基站向核心网发送路径转换请求消息, 以请求向新 的通用无线分组业务(GTP, GPRS Tunnelling Protocol )隧道端点转换下行 GTP隧道;
这里, 所述核心网包括移动性管理实体 ( MME, Mobility Management Entity )和服务网关(S-GW )等;
步骤 211 : 所述核心网完成转换下行路径后, 向所述目标基站发送路径 转换请求应答消息, 以通知所述目标基站路径转换成功;
这里, 所述步骤 208至步骤 211属于数据反传时的处理过程, 步骤 208 至步骤 211 可选, 本领域的技术人员可以根据各种现有技术对数据反传过 程进行确定, 这里不再赘述。
步骤 212: 所述目标基站向所述源基站发送 UE上下文释放消息; 这里, 所述步骤 212可选, 本领域的技术人员可以根据各种现有技术 进行确定, 这里不再赘述。
步骤 213: 所述源基站为 UE配置辅小区列表中的辅小区;
步骤 214: 所述 UE的主小区所在的基站 1 ( SCell— eNBl ) 向 UE的辅 小区所在的基站 2 ( SCell_eNB2 )发送辅小区释放消息;
这里, 所述辅小区释放消息包括: 消息类型、 01d eNB UE X2AP ID 和 New eNB UE X2AP ID等;
步骤 215: 所述 SCell— eNB2接收所述辅小区释放消息后,本地释放 UE 的辅小区。 实施例二:
图 3为本发明实施例第二种切换方法的流程示意图, 如图 3所示, 辅 小区 1 ( SCell l )、 辅小区 2 ( SCell 2 )均为源基站为 UE配置的辅小区列表 中的辅小区, 并且目标基站选择源基站为 UE配置的辅小区列表中 SCell 1、 以及 SCell 3为辅小区; 所述第二种切换方法, 包括:
步骤 301 : 源基站接收 UE发送的测量报告;
这里, 所述测量报告包括本小区及本小区的测量结果、 邻小区及邻小 区的测量结果, 所述测量结果包括 RSRP、 RSRQ等。
步骤 302:所述源基站将测量报告中的载波聚合信息承载于切换请求消 息中, 发送给目标基站;
所述载波聚合信息包括: 待聚合的候选辅小区信息、 UE能力信息、 以 及源基站为 UE配置的辅小区列表等; 其中, 所述待聚合的候选辅小区信息 是通过以下方式确定的: 源基站对所述测量报告承载的邻小区进行功率和 接收质量等的过滤, 并根据过滤后的邻小区及测量结果确定待聚合的候选 辅小区信息; 所述源基站为 UE配置的辅小区列表包括辅小区索引、辅小区 标识等。
步骤 303: 所述目标基站根据所述切换请求消息中的所述载波聚合信 息、 和所述目标基站配置的载波聚合信息确定 SCell;
这里, 所述目标基站配置的载波聚合信息包括载波聚合使能信息、 聚 合的小区信息等。
步骤 304A: 若确定的 SCell不在源基站为 UE配置的辅小区列表里, 则所述目标基站向辅小区所属的基站 SCell— eNB发送辅 ' j、区建立请求消息; 这里, 所述辅小区建立请求消息中承载有: Old eNB UE X2AP ID、 辅 助小区标识、 待建立的 E-RAB列表、 AMBR等。
步骤 304B: 若确定的 SCell在源基站为 UE配置的辅小区列表里, 则 所述目标基站向辅小区所属的基站 SCell— eNB发送辅小区转换请求消息, 请求转换 SCell所归属的 PCell;
这里,所述辅小区转换请求消息中承载有新 PCell所在 eNB分配的 eNB UE X2AP ID、 SCell所在 eNB分配的 eNB UE X2AP ID、 承载信息等; 这里, 所述 SCell— eNB可能包括源基站, 这是由于所述目标基站确定 的 SCell可能包括在源基站为 UE配置的 SCell中, 这时, 所述目标基站也 应该向源基站发送辅小区转换请求消息;
步骤 305A:所述 SCell— eNB向所述目标基站发送辅小区建立响应消息; 这里,所述辅 d、区建立响应消息中承载有: Old eNB UE X2AP ID、 New eNB UE X2AP ID、 E- AB建立成功的列表、 E-RAB建立失败的列表、 专 用物理配置信息等;
步骤 305B: 所述 SCell— eNB执行辅小区转换并向所述目标基站发送辅 小区转换响应消息;
这里,所述辅 d、区转换响应消息中承载 Old eNB UE X2AP ID、 New eNB UE X2AP ID, 承载信息等。
这里, 对应于步骤 304B, 所述 SCell— eNB可能包括源基站;
步骤 306, 所述目标基站向所述源基站发送切换请求应答消息; 这里, 所述切换请求应答消息中承载有移动性控制信息、 辅小区配置 信息、 其它无线资源配置等, 其中, 所述辅小区配置信息包括辅小区增加 / 修改列表、 辅小区删除列表等, 所述辅小区增加 /修改列表和所述辅小区释 放列表中都包括辅小区标识信息, 其中, 所述辅小区释放列表中的辅小区 包括: 源基站的辅小区列表中未被选中的辅小区、 以及存在于源基站的辅 小区列表中又被选中但建立失败的辅小区;;
步骤 307: 所述源基站根据所述切换请求应答消息向 UE发送 RRC连 接重配消息;
这里, 所述 RRC连接重配消息中承载有: 移动性控制信息、 辅小区配 置信息、 其它无线资源配置等;
步骤 308: 所述源基站确定上下行数据需要进行反传时, 所述源基站向 所述目标基站发送序列号状态传递消息; 这里, 所述序列号状态传递消息承载有: PDCP序列号、 HFN接收者 状态、 下行 PDCP序列号以及 HFN发送者状态等信息;
步骤 309: 所述 UE根据所述 RRC连接重配消息执行 RRC连接重配, 接入所述目标基站, 并向所述目标基站发送 RRC连接重配完成消息, 以确 认所述 UE切换到所述目标小区;
步骤 310: 所述目标基站向核心网发送路径转换请求消息, 以请求向新 的 GTP隧道端点转换下行 GTP隧道;
这里, 所述核心网包括 MME和 S-GW等;
步骤 311 : 所述核心网完成转换下行路径后, 向所述目标基站发送路径 转换请求应答消息, 以通知所述目标基站路径转换成功;
步骤 312: 所述目标基站向所述源基站发送 UE上下文释放消息; 步骤 313: 所述源基站向辅小区 2所属的基站 2 ( SCell2_eNB2 )发送 辅小区释放消息;
这里, 所述 SCell2是源基站为 UE配置的辅小区列表中的辅小区, 且 所述 SCell2 没有被目标基站选中作为辅小区, 因此, 所述源基站向所述 SCell2_eNB2发送辅小区释放消息;
这里, 所述辅小区释放消息包括: 消息类型、 01d eNB UE X2AP ID 和 New eNB UE X2AP ID等;
步骤 314: 所述 SCell2— eNB2释放 UE的辅小区。
实施例一和实施例二中, 均包括释放辅小区的处理流程, 它们的共同 点是:源基站为 UE配置的辅小区列表中的辅小区没有被目标基站选中为辅 小区时, 都需要通过辅小区释放流程进行辅小区的释放。 但对于源基站为 UE配置的辅小区列表中的辅小区, 但又被目标基站选中的辅小区时, 实施 例一和实施例二中的处理流程不同, 在实施例一中需要释放该辅小区, 而 在实施例二中不需要释放该辅小区。 它们的不同点是: 实施例一中, 通过 辅小区释放流程释放所有源基站选择的辅小区, 而实施例二, 通过辅小区 释放流程仅释放那些没有被目标基站选中的、且又存在源基站为 UE配置的 辅小区列表中的辅小区。 实施例三:
图 4为本发明实施例另一种切换方法的流程示意图, 如图 4所示, 所 述另一种切换方法, 包括:
步骤 401 : 源基站接收 UE发送的测量报告;
这里, 所述测量报告包括本小区及本小区的测量结果、 邻小区及邻小 区的测量结果, 所述测量结果包括 RSRP、 RSRQ等。
步骤 402:所述源基站将测量报告中的载波聚合信息承载于切换请求消 息中, 发送给目标基站;
所述载波聚合信息包括: 待聚合的候选辅小区信息、 UE能力信息、 以 及源基站为 UE配置的辅小区列表等; 其中, 所述待聚合的候选辅小区信息 是通过以下方式确定的: 源基站对所述测量报告承载的邻区进行功率和接 收质量等的过滤, 并根据过滤后的邻区及测量结果确定待聚合的候选辅小 区信息; 所述源基站为 UE配置的辅小区列表包括辅小区索引、辅小区标识 等。
步骤 403: 所述目标基站根据所述切换请求消息中的所述载波聚合信 息、 和所述目标基站配置的载波聚合信息为用户设备 UE确定辅小区; 这里, 所述目标基站配置的载波聚合信息包括: 载波聚合使能信息、 聚合的小区信息等。
步骤 404:所述目标基站向辅小区所属的基站 SCell— eNB发送辅小区建 立请求消息、 或者, 辅小区建立请求消息和辅小区转换请求消息;
这里, 所述 SCell— eNB可能包括源基站和目标基站, 这是由于所述目 标基站确定的 SCell可能包括在源基站为 UE配置的 SCell中, 这时, 所述 目标基站也应该向源基站发送辅小区建立请求消息、 或者, 辅小区建立请 求消息和辅小区转换请求消息;
这里, 目标基站向所述 SCell— eNB是发送辅小区建立请求消息, 还是 发送辅小区建立请求消息和辅小区转换请求消息, 是根据所选择的切换方 式而定的, 若选择的实施例一所对应的切换方式, 则目标基站向所述 SCell— eNB发送辅小区建立请求消息,具体的流程可参见图 2和实施例一的 描述, 这里不再赘述; 若选择的实施例二所对应的切换方式, 则目标基站 向所述 SCell— eNB发送辅小区建立请求消息和辅小区转换请求消息, 具体 的流程可参见图 3和实施例二的描述, 这里不再赘述。
步骤 405, 所述目标基站向所述源基站发送切换请求应答消息; 这里, 所述切换请求应答消息中承载有: 移动性控制信息、 辅小区配 置信息、 其它无线资源配置等, 其中, 所述辅小区配置信息包括辅小区增 加 /修改列表、 辅小区删除列表等;
本实施例中的步骤 405之前, 所述目标基站向所述源基站发送切换请 求应答消息时, 并不等待辅小区所属的基站 SCell— eNB发送的响应消息, 所述响应消息包括辅小区建立响应消息、 辅小区转换响应消息; 而在实施 例一和实施例二中, 所述目标基站接收辅小区所属的基站 SCell— eNB发送 的响应消息之后, 所述目标基站才向所述源基站发送切换请求应答消息。
步骤 406, 所述源基站根据所述切换请求应答消息向 UE发送 RRC连 接重配消息, 执行切换和切换完成处理;
这里, 所述 RRC连接重配消息中承载有移动性控制信息、 辅小区配置 信息等; 所述源基站执行切换和切换完成处理属于现有技术, 这里不再赘 述。
步骤 407, 若所述目标基站确定的辅小区中存在处理失败的辅小区, 则 更新 UE的辅小区配置信息; 这里, 所述辅小区配置信息包括辅小区增加 /修改列表、 辅小区释放列 表等, 所述辅小区增加 /修改列表和所述辅小区释放列表中都包括辅小区标 识信息, 其中, 所述辅小区释放列表中的辅小区包括: 源基站的辅小区列 表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建 立失败的辅小区;
步骤 408, 所述目标基站向所述 UE发送 RRC连接重配消息, 以指示 所述 UE向所述目标小区切换;
步骤 409, 所述 UE根据所述 RRC连接重配消息执行 RRC连接重配, 接入所述目标基站, 并向所述目标基站发送 RRC连接重配完成消息, 以确 认所述 UE切换到所述目标小区。
本实施例中的步骤 405之前, 所述目标基站向所述源基站发送切换请 求应答消息时, 并不等待辅小区所属的基站 SCell— eNB发送的响应消息, 所述响应消息包括辅小区建立响应消息、 辅小区转换响应消息; 而在实施 例一和实施例二中, 所述目标基站接收辅小区所属的基站 SCell— eNB发送 的响应消息之后, 所述目标基站才向所述源基站发送切换请求应答消息。 这样, 釆用本发明实施例提供的技术方案, 可以节省目标基站在切换时的 处理时间; 若辅小区建立失败时, 在切换完成后通过 RRC连接重配更新辅 小区列表, 从而节约了目标侧等待辅小区建立的时间。 当辅小区数较多, 节约时间的效果会更好。 基于上述实施例提供的切换方法, 本发明实施例再提供一种基站, 该 基站作为目标基站, 图 5-1 为本发明实施例基站的组成结构示意图, 如图 5-1所示, 该目标基站 500包括接收单元 501、 确定单元 502、 处理单元 503 和发送单元 504, 其中:
所述接收单元 501,配置为接收源基站发送的承载有载波聚合信息的 切换请求消息; 所述确定单元 502,配置为根据所述载波聚合信息和所述目标基站配 置的载波聚合信息为 UE确定辅小区;
所述处理单元 503, 配置为建立辅小区, 或与 SCell— eNB进行交互建 立辅小区; 以及, 确定所述辅小区的辅小区配置信息;
所述发送单元 504,配置为将所述辅小区配置信息承载于切换请求应 答消息中发送给所述源基站。
这里,所述载波聚合信息中包括有源基站为所述 UE配置的辅小区列 表; 对应地, 如图 5-2所示, 所述处理单元 503包括判断模块 531、 第一 发送模块 532、 第二发送模块 533和第一接收模块 534, 其中:
所述判断模块 531, 配置为判断所述辅小区是不是在源基站为所述 UE配置的辅小区列表中时, 否时, 触发第一发送模块; 是时, 触发第二 发送模块;
所述第一发送模块 532,配置为向所述 SCell— eNB发送辅小区建立请 求消息,所述辅小区建立请求消息用于触发所述 SCell— eNB建立所述 UE 的辅小区;
所述第二发送模块 533,配置为向所述 SCell— eNB发送辅小区转换请 求消息, 所述辅小区转换请求消息用于触发所述 SCell— eNB执行辅小区 转换;
所述第一接收模块 534,配置为接收所述 SCell— eNB发送的辅小区转 换响应消息, 或者接收所述 SCell— eNB发送的承载有辅小区配置信息的 辅小区建立响应消息, 并根据所述辅小区建立响应消息确定辅小区配置 信息。
这里,如图 5-3所示, 所述处理单元 503包括第三发送模块 535和第 二接收模块 536, 其中:
所述第三发送模块 535,配置为分别向所有 SCell— eNB发送辅小区建 立请求消息,所述辅小区建立请求消息用于触发 SCell— eNB建立所述 UE 的辅小区;
所述第二接收模块 536,配置为接收各所述 SCell— eNB发送的承载有 辅小区配置信息的辅小区建立响应消息, 根据所述辅小区建立响应消息 确定所述辅小区的辅小区配置信息。 基于上述实施例提供的切换方法和基站, 本发明实施例还提供的一种 载波聚合系统, 图 6 为本发明实施例载波聚合系统的组成结构示意图, 如 图 6所示, 所述载波聚合系统 600包括源基站 601、 目标基站 602, 其中: 源基站 601,配置为将承载有载波聚合信息的切换请求消息发送给目标 基站; 以及, 将所述辅小区配置信息通知给用户设备 UE;
所述目标基站 602,配置为根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为用户设备确定辅小区; 以及, 确定所述辅小区的辅小区 配置信息, 并将所述辅小区配置信息承载于切换请求应答消息中发送给所 述源基站。
这里, 所述辅小区配置信息包括辅小区增加 /修改列表、 辅小区释放列 表等, 所述辅小区增加 /修改列表和所述辅小区释放列表中都包括辅小区标 识信息, 其中, 所述辅小区释放列表中的辅小区包括: 源基站的辅小区列 表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建 立失败的辅小区;
优选地, 所述系统还包括: 辅小区所属的基站 SCell— eNB;
所述 SCell— eNB,配置为根据所述辅小区建立请求消息建立 UE的辅小 区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应消息; 以及, 执行辅小区转换并向所述目标基站发送辅小区转换响应消息。
此时, 所述目标基站, 还配置为确定所述辅小区不在源基站为所述 UE 配置的辅小区列表中时, 向所述 SCell— eNB发送辅小区建立请求消息; 以 及,确定所述辅小区在源基站为 UE配置的辅小区列表中时,所述目标基站 向所述 SCell— eNB发送辅小区转换请求消息, 以请求转换辅小区所归属的 主小区。
优选地, 所述系统还包括: 辅小区所属的基站 SCell— eNB;
所述 SCell— eNB,配置为根据所述辅小区建立请求消息建立 UE的辅小 区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应消息。
所述目标基站, 还配置为分别向所有所述 SCell— eNB发送辅小区建立 请求消息。
优选地, 所述系统还包括用户设备 UE;
所述用户设备 UE, 配置为向所述源基站发送承载有邻小区的测量报 告.
相应地, 所述源基站, 配置为根据所述邻小区的测量报告确定待聚合 的辅小区; 以及将所确定的待聚合的候选辅小区信息、 UE能力信息、 以及 源基站为 UE配置的辅小区列表组成载波聚合信息,并将所述载波聚合信息 承载于发送给目标基站的切换请求消息中。
优选地, 所述源基站还配置为, 所述源基站根据所述切换请求应答消 息向 UE发送 RRC连接重配消息;
相应地,所述 UE进一步配置为,根据所述 RRC连接重配消息执行 RRC 连接重配, 接入所述目标基站, 并向所述目标基站发送 RRC连接重配完成 消息。
优选地, 所述系统还包括核心网;
所述源基站, 还配置为确定需要数据反传时, 向所述目标基站发送序 列号状态传递消息;
所述目标基站, 还配置为向核心网发送路径转换请求消息;
所述核心网, 配置为完成转换下行路径后, 向所述目标基站发送路径 转换请求应答消息。
优选地, 所述系统还包括辅小区释放列表中的辅小区所属的基站; 所述源基站, 进一步配置为根据所述切换请求应答消息中承载的辅小 区释放列表, 向所述辅小区释放列表中的辅小区所属的基站发送辅小区释 放消息; 其中, 所述辅小区释放列表中的辅小区包括: 所述源基站的辅小 区列表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中 但建立失败的辅小区;
所述辅小区释放列表中的辅小区所属的基站, 配置为接收所述辅小区 释放消息后, 释放所述 UE的辅小区。
本领域的技术人员应当理解, 本发明实施例聚合载波系统的基站功能 可参照前述切换方法的相关描述而理解, 这里的基站包括源基站、 目标基 站、 以及辅小区所在的基站和辅小区释放列表中的辅小区所属的基站等。
本领域技术人员应当理解, 本发明实施例基站中接收单元、 确定单元、 处理单元和发送单元的功能, 以及处理单元所包括的各模块的功能, 都可 以通过基站中的处理器而实现, 也可通过具体的逻辑电路而实现。 在具体 实施例的过程中, 处理器可以为中央处理器 (CPU )、 微处理器 (MPU )、 数字信号处理器 (DSP )或现场可编程门阵列 (FPGA )等。
本发明实施例中, 如果以软件功能模块的形式实现上述应用于目标基 站的切换方法, 并作为独立的产品销售或使用时, 也可以存储在一个计算 机可读取存储介质中。 基于这样的理解, 本发明实施例的技术方案本质上 或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来, 该计 算机软件产品存储在一个存储介质中, 包括若干指令用以使得一台计算机 设备(可以是个人计算机、 服务器、 或者网络设备等)执行本发明各个实 施例所述方法的全部或部分。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read Only Memory ),磁碟或者光盘等各种可以存储程 序代码的介质。 这样, 本发明实施例不限制于任何特定的硬件和软件结合。 相应地, 本发明实施例再提供一种计算机存储介质, 所述计算机存储 介质中存储有计算机可执行指令, 该计算机可执行指令用于执行本发明各 实施例中提供的应用于目标基站的切换方法。
以上所述仅为本发明的优选实施例, 并非因此限制本发明的专利保护 范围, 凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换, 或直接或间接运用在其他相关的技术领域, 均同理包括在本发明的专利保 护范围。 工业实用性
本发明实施例中, 目标基站接收源基站发送的承载有载波聚合信息的 切换请求消息; 所述目标基站根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为 UE 确定辅小区; 所述目标基站建立辅小区, 或, 与 SCell— eNB进行交互建立辅小区, 并确定所述辅小区的辅小区配置信息; 所 述目标基站将所述辅小区配置信息承载于切换请求应答消息中发送给所述 源基站; 如此, 能够实现在基站间载波聚合时的切换处理, 从而扩展了载 波聚合的应用场景。

Claims

权利要求书
1、 一种切换方法, 所述方法包括:
目标基站接收源基站发送的承载有载波聚合信息的切换请求消息; 所述目标基站根据所述载波聚合信息和所述目标基站配置的载波聚 合信息为用户设备 UE确定辅小区;
所述目标基站建立辅小区, 或, 与所述辅小区所在基站 SCell— eNB 进行交互建立辅小区, 并确定所述辅小区的辅小区配置信息;
所述目标基站将所述辅小区配置信息承载于切换请求应答消息中发 送给所述源基站。
2、 根据权利要求 1所述的方法, 其中, 所述载波聚合信息中包括有 源基站为所述 UE配置的辅小区列表;
对应地, 所述目标基站建立辅小区, 或, 与所述 SCell— eNB进行交 互建立辅小区, 并确定所述辅小区的辅小区配置信息, 包括:
所述目标基站确定所述辅小区不在源基站为所述 UE 配置的辅小区 列表中时, 向所述 SCell— eNB发送辅小区建立请求消息, 所述辅小区建 立请求消息用于触发所述 SCell— eNB建立所述 UE的辅小区;
所述目标基站确定所述辅小区在源基站为所述 UE 配置的辅小区列 表中时, 向所述 SCell— eNB发送辅小区转换请求消息, 所述辅小区转换 请求消息用于触发所述 SCell— eNB执行辅小区转换;
所述目标基站接收所述 SCell— eNB发送的辅小区转换响应消息, 或 者接收所述 SCell— eNB发送的承载有辅小区配置信息的辅小区建立响应 消息, 并才艮据所述辅小区建立响应消息确定辅小区配置信息。
3、 根据权利要求 1所述的方法, 其中, 所述目标基站建立辅小区, 或与所述 SCell— eNB进行交互建立辅小区, 并确定所述辅小区的辅小区 配置信息, 包括: 所述目标基站分别向所有 SCell— eNB发送辅小区建立请求消息, 所 述辅小区建立请求消息用于触发 SCell— eNB建立所述 UE的辅小区; 所述目标基站接收各所述 SCell— eNB发送的承载有辅小区配置信息 的辅小区建立响应消息, 根据所述辅小区建立响应消息确定所述辅小区 的辅小区配置信息。
4、 一种切换方法, 所述方法包括:
源基站将承载有载波聚合信息的切换请求消息发送给目标基站; 所述目标基站根据所述载波聚合信息和所述目标基站配置的载波聚 合信息为用户设备 UE确定辅小区;
所述目标基站建立辅小区或与所述辅小区所在基站 SCell— eNB进行 交互建立辅小区, 及确定所述辅小区的辅小区配置信息, 并将所述辅小 区配置信息承载于切换请求应答消息中发送给所述源基站;
所述源基站将所述辅小区配置信息通知所述 UE。
5、 根据权利要求 4所述的方法, 其中, 所述载波聚合信息中包括有 源基站为所述 UE配置的辅小区列表;
对应地, 所述目标基站建立辅小区或与所述 SCell— eNB进行交互建 立辅小区, 及确定所述辅小区的辅小区配置信息, 包括:
所述目标基站确定所述辅小区不在源基站为所述 UE 配置的辅小区 列表中时, 所述目标基站向所述 SCell— eNB发送辅小区建立请求消息; 所述 SCell— eNB根据所述辅小区建立请求消息建立所述 UE的辅小区,并 向所述目标基站发送承载有辅小区配置信息的辅小区建立响应消息; 或 者,
所述目标基站确定所述辅小区在源基站为所述 UE 配置的辅小区列 表中时, 所述目标基站向所述 SCell— eNB发送辅小区转换请求消息; 所 述 SCell— eNB执行辅小区转换并向所述目标基站发送辅小区转换响应消 息。
6、 根据权利要求 4所述的方法, 其中, 所述目标基站建立辅小区或 与所述辅小区所在基站进行交互建立辅小区, 及确定所述辅小区的辅小 区配置信息, 包括:
所述目标基站分别向所有 SCell— eNB发送辅小区建立请求消息; 各 SCell— eNB根据所述辅小区建立请求消息建立所述 UE的辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立响应消息。
7、 根据权利要求 4至 6任一项所述的方法, 其中, 在所述源基站将 承载有载波聚合信息的切换请求消息发送给目标基站之前, 所述方法还 包括:
所述源基站接接收所述 UE发送的承载有邻小区的测量报告; 所述源基站根据所述邻小区的测量报告确定待聚合的候选辅小区; 所述源基站将所确定的待聚合的候选辅小区信息、 UE能力信息、 以 及源基站为 UE配置的辅小区列表组成载波聚合信息,并将所述载波聚合 信息承载于发送给目标基站的切换请求消息中。
8、 根据权利要求 4至 6任一项所述的方法, 其中, 所述源基站将所 述辅小区配置信息通知所述 UE, 包括:
所述源基站根据所述切换请求应答消息,向所述 UE发送无线资源控 制 RRC连接重配消息。
9、根据权利要求 4至 6任一项所述的方法,其中, 所述方法还包括: 所述源基站根据所述切换请求应答消息中承载的辅小区释放列表, 向所述辅小区释放列表中的辅小区所属的基站发送辅小区释放消息; 其 中, 所述辅小区释放列表中的辅小区包括: 所述源基站的辅小区列表中 未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选中但建立 失败的辅小区; 所述辅小区释放列表中的辅小区所属的基站接收到所述辅小区释放 消息后, 释放所述 UE的辅小区。
10、 一种基站, 所述基站作为目标基站, 所述目标基站包括接收单 元、 确定单元、 处理单元和发送单元, 其中:
所述接收单元, 配置为接收源基站发送的承载有载波聚合信息的切 换请求消息;
所述确定单元, 配置为根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为用户设备 UE确定辅小区;
所述处理单元, 配置为建立辅小区, 或与所述辅小区所在基站 SCell— eNB进行交互建立辅小区; 以及,确定所述辅小区的辅小区配置信 息;
所述发送单元, 配置为将所述辅小区配置信息承载于切换请求应答 消息中发送给所述源基站。
11、 根据权利要求 10所述的基站, 其中, 所述载波聚合信息中包括 有源基站为所述 UE配置的辅小区列表; 对应地, 所述处理单元, 包括判 断模块、 第一发送模块、 第二发送模块和第一接收模块, 其中:
所述判断模块,配置为判断所述辅小区是不是在源基站为所述 UE配 置的辅小区列表中时, 否时, 触发第一发送模块; 是时, 触发第二发送 模块;
所述第一发送模块, 配置为向所述 SCell— eNB发送辅小区建立请求 消息, 所述辅小区建立请求消息用于触发所述 SCell— eNB 建立所述 UE 的辅小区;
所述第二发送模块, 配置为向所述 SCell— eNB发送辅小区转换请求 消息, 所述辅小区转换请求消息用于触发所述 SCell— eNB执行辅小区转 换; 所述第一接收模块, 配置为接收所述 SCell— eNB发送的辅小区转换 响应消息, 或者接收所述 SCell— eNB发送的承载有辅小区配置信息的辅 小区建立响应消息, 并根据所述辅小区建立响应消息确定辅小区配置信 息。
12、 根据权利要求 10所述的基站, 其中, 所述处理单元包括第三发 送模块和第二接收模块, 其中:
所述第三发送模块, 配置为分别向所有 SCell— eNB发送辅小区建立 请求消息, 所述辅小区建立请求消息用于触发 SCell— eNB 建立所述 UE 的辅小区;
所述第二接收模块, 配置为接收各所述 SCell— eNB发送的承载有辅 小区配置信息的辅小区建立响应消息, 根据所述辅小区建立响应消息确 定所述辅小区的辅小区配置信息。
13、 一种载波聚合系统, 所述系统包括源基站、 目标基站, 其中: 所述源基站, 配置为将承载有载波聚合信息的切换请求消息发送给 目标基站; 以及, 将所述辅小区配置信息通知给用户设备 UE;
所述目标基站, 配置为根据所述载波聚合信息和所述目标基站配置 的载波聚合信息为所述 UE确定辅小区; 以及,建立辅小区或与所述辅小 区所在基站 SCell— eNB进行交互建立辅小区, 及确定所述辅小区的辅小 区配置信息, 并将所述辅小区配置信息承载于切换请求应答消息中发送 给所述源基站。
14、 根据权利要求 1 所述的系统, 其中, 所述系统还包括: 辅小区 所属的基站 SCell— eNB;
所述 SCell— eNB, 配置为根据所述辅小区建立请求消息建立所述 UE 的辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立 响应消息; 以及, 执行辅小区转换并向所述目标基站发送辅小区转换响 应消息;
此时, 所述目标基站, 还配置为确定所述辅小区不在源基站为所述
UE配置的辅小区列表中时,向所述 SCell— eNB发送辅小区建立请求消息; 以及,确定所述辅小区在源基站为所述 UE配置的辅小区列表中时, 所述 目标基站向所述 SCell— eNB发送辅小区转换请求消息, 以请求转换辅小 区所归属的主小区。
15、 根据权利要求 13所述的系统, 其中, 所述系统还包括: 辅小区 所属的基站 SCell— eNB;
所述 SCell— eNB, 配置为根据所述辅小区建立请求消息建立所述 UE 的辅小区, 并向所述目标基站发送承载有辅小区配置信息的辅小区建立 响应消息;
所述目标基站, 还配置为分别向所有 SCell— eNB发送辅小区建立请 求消息。
16、 根据权利要求 13至 15任一项所述的系统, 其中, 所述系统还 包括辅小区释放列表中的辅小区所属的基站;
所述源基站, 配置为根据所述切换请求应答消息中承载的辅小区释 放列表, 向所述辅小区释放列表中的辅小区所属的基站发送辅小区释放 消息; 其中, 所述辅小区释放列表中的辅小区包括: 所述源基站的辅小 区列表中未被选中的辅小区、 以及存在于源基站的辅小区列表中又被选 中但建立失败的辅小区;
所述辅小区释放列表中的辅小区所属的基站, 配置为接收所述辅小 区释放消息后, 释放所述 UE的辅小区。
17、 一种计算机可读存储介质, 所述计算机存储介质中存储有计算 机可执行指令, 该计算机可执行指令用于执行权利要求 1至 3任一项所 述的切换方法。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016119109A1 (zh) * 2015-01-26 2016-08-04 华为技术有限公司 一种切换装置及方法
CN115052319A (zh) * 2021-03-09 2022-09-13 大唐移动通信设备有限公司 一种信息确认方法、装置及网络设备

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107925931B (zh) * 2015-07-31 2021-08-03 日本电气株式会社 基站及其方法
CN105517067B (zh) * 2015-11-26 2019-03-05 京信通信系统(中国)有限公司 基于载波聚合的切换方法及系统
CN110022224B (zh) * 2018-01-10 2020-09-01 维沃移动通信有限公司 一种数据的处理方法、用户侧设备及网络侧设备
US11202237B2 (en) * 2018-07-24 2021-12-14 Mediatek Inc. Method for preventing an inter-rat change from being triggered and communications apparatus utilizing the same
CN114727345A (zh) * 2019-06-14 2022-07-08 小米通讯技术有限公司 聚合连接建立方法、装置及存储介质
US20210258918A1 (en) * 2020-02-14 2021-08-19 Kt Corporation Methods for processing multicast/broadcast service data and apparatuses thereof
CN114554518B (zh) * 2020-11-25 2023-07-04 大唐移动通信设备有限公司 辅小区的配置方法、装置、基站及存储介质
CN114302465A (zh) * 2021-12-30 2022-04-08 中国电信股份有限公司卫星通信分公司 一种基于载波聚合的快速链路恢复和切换方法
CN116567739A (zh) * 2022-01-28 2023-08-08 大唐移动通信设备有限公司 业务数据传输、信息配置方法、装置、终端及基站

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102083154A (zh) * 2010-11-05 2011-06-01 大唐移动通信设备有限公司 一种切换时辅小区配置的处理方法及其装置
CN102238666A (zh) * 2010-04-30 2011-11-09 中兴通讯股份有限公司 多载波切换处理方法及系统
CN102421149A (zh) * 2010-09-28 2012-04-18 中兴通讯股份有限公司 切换信息的通知方法及基站
WO2012081923A2 (ko) * 2010-12-16 2012-06-21 주식회사 팬택 다중 요소 반송파 시스템에서 무선연결 재설정 수행장치 및 방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9014141B2 (en) * 2010-04-29 2015-04-21 Electronics And Telecommunications Research Institute Carrier-aggregation-based handover method
CN102378225B (zh) * 2010-08-23 2014-04-16 普天信息技术研究院有限公司 载波聚合中小区参数的配置方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102238666A (zh) * 2010-04-30 2011-11-09 中兴通讯股份有限公司 多载波切换处理方法及系统
CN102421149A (zh) * 2010-09-28 2012-04-18 中兴通讯股份有限公司 切换信息的通知方法及基站
CN102083154A (zh) * 2010-11-05 2011-06-01 大唐移动通信设备有限公司 一种切换时辅小区配置的处理方法及其装置
WO2012081923A2 (ko) * 2010-12-16 2012-06-21 주식회사 팬택 다중 요소 반송파 시스템에서 무선연결 재설정 수행장치 및 방법

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016119109A1 (zh) * 2015-01-26 2016-08-04 华为技术有限公司 一种切换装置及方法
CN106063328A (zh) * 2015-01-26 2016-10-26 华为技术有限公司 一种切换装置及方法
US10362519B2 (en) 2015-01-26 2019-07-23 Huawei Technologies Co., Ltd. Handover apparatus and method
CN106063328B (zh) * 2015-01-26 2020-02-21 华为技术有限公司 一种切换装置及方法
CN111465064A (zh) * 2015-01-26 2020-07-28 华为技术有限公司 一种切换装置及方法
US10873889B2 (en) 2015-01-26 2020-12-22 Huawei Technologies Co., Ltd. Handover apparatus and method
CN111465064B (zh) * 2015-01-26 2022-10-28 华为技术有限公司 一种切换装置及方法
CN115052319A (zh) * 2021-03-09 2022-09-13 大唐移动通信设备有限公司 一种信息确认方法、装置及网络设备

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