WO2019218990A1 - 切换方法及装置 - Google Patents

切换方法及装置 Download PDF

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Publication number
WO2019218990A1
WO2019218990A1 PCT/CN2019/086761 CN2019086761W WO2019218990A1 WO 2019218990 A1 WO2019218990 A1 WO 2019218990A1 CN 2019086761 W CN2019086761 W CN 2019086761W WO 2019218990 A1 WO2019218990 A1 WO 2019218990A1
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WO
WIPO (PCT)
Prior art keywords
target cell
information
handover
cell
radio resource
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PCT/CN2019/086761
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English (en)
French (fr)
Inventor
施小娟
黄河
刘静
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2020563914A priority Critical patent/JP7187579B2/ja
Priority to EP19803047.0A priority patent/EP3796711A4/en
Priority to KR1020207035804A priority patent/KR102303128B1/ko
Publication of WO2019218990A1 publication Critical patent/WO2019218990A1/zh
Priority to US17/096,314 priority patent/US10999771B2/en
Priority to US17/237,151 priority patent/US11582663B2/en
Priority to US18/102,473 priority patent/US12004034B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00838—Resource reservation for handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states

Definitions

  • the present disclosure relates to the field of communications, and in particular to a handover method and apparatus.
  • Mobile performance is one of the most important indicators in wireless communication systems.
  • the industry has been working to improve mobile performance in wireless communication systems.
  • 3GPP 3rd Generation Partnership Project
  • How to improve mobile performance including reducing the probability of handover failure, reducing the probability of ping-pong.
  • the enhanced handover procedure such as handover (RACH-less HO) triggers the handover only when the "actual handover/mobility condition" is satisfied. That is, the handover command is satisfied.
  • the handover condition is sent to the UE.
  • the "actual handover condition” means that the signal quality of the target cell is good enough, and the UE can perform normal communication after switching to the target cell. Conversely, if the UE continues to stay in the source cell, the radio link may be failed.
  • the “actual handover condition” may be that the signal quality satisfies the A3 event (the signal quality of the neighboring cell is higher than the signal quality of the serving cell by an offset), the A4 event (the signal quality of the neighboring cell is higher than the threshold) or A5.
  • the event the signal quality of the serving cell is lower than the threshold 1, the signal quality of the neighboring cell is higher than the threshold 2), etc.
  • the parameter reconfiguration of the "actual switching condition” such as the offset of the A3 event, the threshold of the A4/A5 event, usually It is determined after the network planning network optimization.
  • HetNet heterogeneous networks
  • the mechanism that triggers the handover when the "actual handover condition" is met is originally designed for the homogeneous low-frequency network.
  • HetNet heterogeneous networks
  • the micro cell is deployed in the coverage of the macro cell.
  • high frequency frequencies up to 100 GHz will be available.
  • cell deployment will become more and more dense, and the cell coverage will become smaller and smaller relative to systems before 5G, which will make the handover (mobility) frequency in the 5G system relative to the previous system. Become more frequent.
  • the embodiment of the present disclosure provides a handover method and apparatus to at least solve the problem of handover failure caused by a measurement report or a handover command transmission failure in the related art.
  • a handover method including: a user equipment UE receives a radio resource control reconfiguration message sent by a source base station, where the radio resource control reconfiguration message includes the UE performing condition switching The target cell list, the information of each target cell in the target cell list that performs the conditional handover includes at least one of: frequency point information of the target cell, physical cell identifier of the target cell, and the target cell generated by the target cell.
  • a conditional switching command, at least one measurement configuration identifier information, the measurement configuration identifier information is used to indicate an execution condition of the UE performing conditional handover in the target cell; and the UE performs handover according to the radio resource control reconfiguration message .
  • a handover method including: a source base station transmitting a radio resource control reconfiguration message to a user equipment UE, where the radio resource control reconfiguration message includes the UE performing condition switching
  • the target cell list the information of each target cell in the target cell list that performs the conditional handover includes at least one of: frequency point information of the target cell, physical cell identifier of the target cell, and the target cell generated by the target cell.
  • a handover apparatus configured to receive, by the user equipment UE, a radio resource control reconfiguration message sent by a source base station, where the radio resource control
  • the reconfiguration message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: frequency point information of the target cell, and a physical cell of the target cell.
  • a handover apparatus which is applied to a base station, and includes: a second handover module, configured to send a radio resource control reconfiguration message to a user equipment UE, where the radio resource control reconfiguration
  • the message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: frequency point information of the target cell, physical cell identifier of the target cell, a condition switching command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information is used to indicate an execution condition of the UE performing condition switching in the target cell.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any one of the method embodiments described above at runtime.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the computer program to perform any of the above The steps in the method embodiments.
  • the user equipment UE receives the radio resource control reconfiguration message sent by the source base station, where the radio resource control reconfiguration message includes a target cell list in which the UE performs conditional handover, and each of the target cell lists in which the conditional handover is performed
  • the information of the target cell includes at least one of the following: the frequency point information of the target cell, the physical cell identifier of the target cell, the conditional handover command of the target cell generated by the target cell, and at least one measurement configuration identifier information, and the measurement configuration identifier information And an execution condition for indicating that the UE performs conditional handover in the target cell; the UE performs handover according to the radio resource control reconfiguration message.
  • the present disclosure solves the failure of the measurement report or the handover command in the related art by configuring the target cell list and selecting one target cell from the plurality of target cells.
  • the resulting switch failure problem improves mobile performance.
  • FIG. 1 is a flow chart of a handover method in accordance with an embodiment of the present disclosure
  • FIG. 2 is a flow chart of another switching method in accordance with an embodiment of the present disclosure.
  • FIG. 3 is a schematic diagram (1) of a switching scenario according to an alternative embodiment of the present disclosure.
  • Figure 4 is a flowchart of the failure of the associated handover technique
  • FIG. 7 is a schematic diagram (2) of a handover scenario according to an alternative embodiment of the present disclosure.
  • FIG. 12 is a structural block diagram of a switching device according to an embodiment of the present disclosure.
  • FIG. 13 is a structural block diagram of another switching device according to an embodiment of the present disclosure.
  • FIG. 1 is a flowchart of a handover method according to an embodiment of the present disclosure. As shown in FIG. 1, the flow includes the following steps.
  • Step S102 The user equipment UE receives the radio resource control reconfiguration message sent by the source base station, where the radio resource control reconfiguration message includes a target cell list in which the UE performs conditional handover, and each of the target cell lists in which the conditional handover is performed
  • the information of the target cell includes at least one of the following: a frequency point information of the target cell, a physical cell identifier of the target cell, a condition switching command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information is used.
  • an execution condition indicating that the UE performs condition switching in the target cell.
  • Step S104 The UE performs handover according to the radio resource control reconfiguration message.
  • the present disclosure solves the failure of the measurement report or the handover command in the related art by configuring the target cell list and selecting one target cell from the multiple target cells.
  • the resulting switch failure problem improves mobile performance.
  • the conditional handover command of the target cell is sent by the target cell to the source base station by using an interface message, where the interface message includes a target cell configuration list, and each of the target cell configuration lists is
  • the configuration of the target cell includes: a cell global identifier CGI of the target cell, a conditional handover command of the target cell, and one of the following information: protocol data unit PDU session information successfully received on the target cell, and an evolved wireless connection successfully received on the target cell.
  • E-RAB information Into the E-RAB information.
  • conditional handover command of the target cell includes a radio resource control RRC message transmission identifier that is allocated by the target cell to the conditional handover command.
  • the method further includes: modifying or adding the measurement object configuration associated with the measurement configuration identifier information.
  • the cell level offset of the above target cell is the information of each target cell in the target cell list that performs the conditional switching.
  • the information of each target cell in the target cell list that performs the conditional handover includes: offset, when the information of each target cell in the target cell list that performs the conditional handover includes the at least one measurement configuration identifier information. Quantity or threshold.
  • the method further includes: the UE using the offset or the threshold to replace the measurement object configuration associated with the measurement configuration identifier information.
  • the offset or the threshold value; or the UE calculates the sum of the offset or the threshold value in the measurement object configuration associated with the offset or the threshold value and the measurement configuration identification information.
  • the method further includes: receiving, by the UE, at least two sets of parameters configured by the source base station for the same measurement event; or, the method further includes: The above-mentioned UE receives at least two sets of parameters configured by the source base station to perform the same measurement event carried in the radio resource control reconfiguration message; wherein the two sets of parameters include: a first set of parameters and a second set of parameters, The first set of parameters is used to indicate that the UE performs conditional handover, and the second set of parameters is used to instruct the UE to perform unconditional handover.
  • the same measurement event may be a measurement event configured in the measurement report configuration associated with the measurement configuration identifier information.
  • the performing, by the foregoing UE, the handover according to the radio resource control reconfiguration message includes: if the measurement result of the at least one target cell included in the radio resource control reconfiguration message meets the reporting condition of the report configuration associated with the measurement configuration identifier information And determining to satisfy an execution condition that the UE performs conditional handover in the target cell; and the UE switches to the target cell.
  • the method further includes: if the UE determines that beam recovery fails or the radio link fails in the source cell, the UE is in the target cell list. One target cell is selected; the UE switches to the target cell.
  • the method further includes: the UE feeding back a radio resource control reconfiguration complete message to the source base station; wherein the radio resource control reconfiguration complete message And carrying the RRC message transmission identifier allocated by the source base station to the foregoing radio resource control reconfiguration message.
  • the method further includes: the radio resource control reconfiguration complete message fed back by the UE to the target cell, where the target cell is allocated by the condition switching command RRC message transmission identifier.
  • FIG. 2 is a flowchart of another handover method according to an embodiment of the present disclosure. As shown in FIG. 2, the flow includes the following steps.
  • Step S202 The source base station sends a radio resource control reconfiguration message to the user equipment UE, where the radio resource control reconfiguration message includes a target cell list for conditional handover by the UE, and each target in the target cell list for performing conditional handover
  • the information of the cell includes at least one of the following: a frequency point information of the target cell, a physical cell identifier of the target cell, a condition switching command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information An execution condition for indicating that the UE performs conditional handover in the target cell.
  • the present disclosure solves the failure of the measurement report or the handover command in the related art by configuring the target cell list and selecting one target cell from the multiple target cells.
  • the resulting switch failure problem improves mobile performance.
  • the conditional handover command of the target cell is sent by the target cell to the source base station by using an interface message, where the interface message includes a target cell configuration list, and each of the target cell configuration lists is
  • the configuration of the target cell includes: a cell global identifier CGI of the target cell, a conditional handover command of the target cell, and one of the following information: protocol data unit PDU session information successfully received on the target cell, and an evolved wireless connection successfully received on the target cell.
  • E-RAB information Into the E-RAB information.
  • the method further includes: after receiving the sounding reference information SRS sent by the UE, the uplink cell authorization configured by the target cell in the condition switching command is effective or the target cell starts to perform scheduling; or The target cell starts the timer after the RRC message is generated. After the timer expires, the uplink grant configured by the target cell in the condition switch command is effective or the target cell starts to be scheduled. .
  • FIG. 3 is a schematic diagram of a possible handover scenario.
  • the UE moves from the cell 1 to the cell 2.
  • the “actual handover condition” such as point B in FIG. 3
  • Switching process when the “actual handover condition” (such as point B in FIG. 3) is met, Switching process.
  • Figure 4 shows a possible handover failure procedure caused by the existing handover technology.
  • Figure. As shown in FIG. 4, when the UE moves to point B as shown in FIG. 3, it is judged that the "actual switching condition" is satisfied, and the measurement report is transmitted to the source base station (S210).
  • the source base station After receiving the measurement report, the source base station starts to notify the target base station to perform handover preparation (S220). After receiving the handover request response message from the target base station (S230), the source base station sends a handover command to the UE (S240), but The signal quality of the source base station has become very poor, so the handover command fails to be transmitted. After a period of time, the UE fails to generate a radio link at the source base station (S250).
  • conditional handover or may also be referred to as early handover preparation.
  • the overall switching process of conditional switching is shown in Figure 5, including:
  • the UE sends a measurement report to the source base station when the “early handover preparation condition” (or may also be referred to as “conditional handover trigger condition”) is met.
  • the measurement report reports the information of the cell that satisfies the "advance handover preparation condition", including the cell identifier, such as the physical cell identifier PCI, the measurement result of the cell, the measurement result of the beam that satisfies the reporting condition in the cell, and the like.
  • the measurement result of the beam refers to the measurement result of a certain measurement reference signal
  • the measurement result of the cell is the measurement result after the average of the plurality of measurement reference signal signals in the cell.
  • Measurement reference signals such as SS Blocks, Channel State Information Reference Signal (CSI-RS).
  • the "advance switching preparation condition” is configured by the base station to the UE, and the “advance switching preparation condition” is satisfied before the "actual switching condition” is satisfied. For example, the “advance switching preparation condition” is satisfied at point A in FIG.
  • the source base station sends a handover request to the target base station.
  • the source base station After receiving the measurement report, the source base station sends a handover request to the target cell that satisfies the "advance handover preparation condition" according to the measurement report.
  • the handover request includes relevant configuration information of the UE at the source base station, a cell-level measurement result of the target cell, and a beam measurement result of the target cell.
  • the target base station feeds back a handover request response to the source base station.
  • the handover request response includes a conditional handover command sent to the UE.
  • the conditional handover command includes target cell information, information required for the UE to access the target cell, "conditional handover execution condition", and the like.
  • the target cell information includes a target cell identifier (PCI) and frequency information used by the target cell.
  • the information required for the UE to access the target cell includes random access configuration information for the UE to perform random access in the target cell, common configuration information of the target cell, and dedicated configuration information configured by the target cell to the UE.
  • the source base station sends a condition switching command to the UE.
  • the UE sends a conditional handover complete message to the source base station.
  • the UE After receiving the conditional handover command, the UE does not perform handover immediately and continues to remain in the source cell. The UE continues to measure the target cell indicated in the conditional handover command.
  • the UE accesses the cell 2. For example, the UE accesses the cell 2 through random access.
  • the UE sends a conditional handover success message to the target cell.
  • the handover preparation process is completed before the "actual handover condition" is satisfied.
  • the handover command is sent to the UE in advance when the signal quality of the source cell is good enough, so that the measurement report or the handover command fails to be sent in the existing handover technology.
  • the resulting switch failure has effectively improved the mobile performance.
  • the UE reports the measurement report before the "actual handover condition" is satisfied, that is, when the "advance handover preparation condition" is satisfied.
  • the "pre-switching preparation condition” is more lenient than the "actual switching condition".
  • the configuration A4 event (the signal quality of the neighboring area is higher than the threshold) is taken as an example. If the threshold of the "actual switching condition" is satisfied, the threshold is Th1. If the threshold for satisfying the "pre-switching preparation condition" is Th2, Th2 ⁇ Th1 is configured.
  • FIG. 6 is a flowchart for preparing a handover of conditional handover, including:
  • one frequency (frequency) is configured as one measurement object, and different frequencies are configured as different measurement objects.
  • the cells on different frequencies satisfy the "advance switching preparation condition", and report their respective measurement reports, and report the information of all the cells on the frequency that satisfy the "advance handover preparation condition”.
  • the source base station configures the measurement of the frequency F1 and the F2 respectively, the F1 corresponds to the measurement object 1, and the F2 corresponds to the measurement object 2.
  • the cells on F1 and F2 successively trigger measurement reports in a similar time, so the UE respectively Two measurement reports S410 and S410' are reported, and information of all cells satisfying the "advance switching preparation condition" on F1 and F2 is reported in the measurement report.
  • the source base station sends a handover request to the target base station.
  • the source base station determines, according to the measurement report received in S410/S410', that the cells satisfying the "advance handover preparation condition" are located on the target base station T-gNB1 and the target base station T-gNB2, respectively.
  • the source base station initiates a handover request to the target base stations T-gNB1 and T-gNB2.
  • the handover request includes a target cell list in addition to the related configuration information of the source base station, and the target cell list includes at least a cell global identifier (CGI) of each target cell, and may also include measurement results of each target cell.
  • CGI cell global identifier
  • the target base station feeds back a handover request response to the source base station.
  • the handover request response includes a target cell configuration list, that is, configuration information of the target cell that includes the target base station receiving and successfully completing the handover configuration.
  • the target cell configuration list includes the CGI of each target cell, the PDU session information successfully received on each target cell (if the UE accesses the 5G core network) or the E-RAB information (if the UE accesses the core of the LTE) Network), conditional switching command for each target cell.
  • the conditional handover command is generated by the target cell, for example, an RRC reconfiguration message (RRCReconfiguration) is generated by the target cell, and the generated RRCReconfiguration is directly included in the handover request response in the form of a character stream (OCTET STRING) (or also in the form of a container container).
  • the RRCReconfiguration message generated by each target cell includes an RRC message transmission identifier (rrc-TransactionIdentifier) allocated by the target cell for the RRCReconfiguration.
  • the source base station sends a condition switching command to the UE.
  • the source base station sends a conditional handover command to the UE, and the conditional handover command is included in the RRCReconfiguration generated by the source base station.
  • a RRCReconfiguration may include a conditional handover command of multiple target cells, that is, the RRCReconfiguration includes a conditional handover target cell list.
  • the conditional handover target cell list includes frequency point information and physical cell identity (PCI) of each target cell, a conditional handover command of the target cell generated by the target cell, and at least one “conditional handover execution condition” indicating the target cell.
  • PCI physical cell identity
  • the frequency point information of the target cell is identified by an absolute carrier frequency number (ARFCN); the identification information of the measurement configuration indicating the conditional handover execution condition of the target cell may be identified by a measurement identity (measID).
  • a measID is associated with a measurement object and a report configuration. The measID, the UE can determine the conditional handover execution condition of the target cell.
  • the RRCReconfiguration generated by the source base station includes the rrc-TransactionIdentifier allocated by the source base station for the RRCReconfiguration message.
  • the inter-base station interface exists between the S-gNB and the T-gNB, so the handover preparation message between the S-gNB and the T-gNB includes the handover request sent by the source base station to the target base station and the target base station direction.
  • the handover request responses fed back by the source base station are directly transmitted through the inter-base station interface.
  • the source base station and the target base station do not have an interface between the base stations.
  • all the messages related to the handover preparation are transmitted through the core network, for example, the source base station passes the source base station and the core network.
  • the interface between the interface sends a handover preparation related message to the core network, and the core network forwards the received message to the target base station through an interface between the core network and the target base station.
  • the target base station sends a feedback message related to the handover preparation to the core network through the interface between the target network and the core network, and the core network forwards the received message to the source base station through the interface between the core network and the source base station.
  • conditional handover after receiving the conditional handover command (including in the RRCReconfiguration generated by the source cell, as described in step S440 of the first embodiment), the UE does not perform the handover immediately, but continues to remain in the source cell, and is included in the RRCReconfiguration.
  • the conditional handover target cell in the target cell list performs measurement. When it is determined that the target cell satisfies the "conditional handover execution condition" of the cell indicated in the RRCReconfiguration, the UE performs handover and accesses the target cell.
  • the RRCReconfiguration message generated by the source cell includes identification information indicating a measurement configuration of the "conditional handover execution condition" of each target cell, such as measID, if the measurement result of a target cell is satisfied.
  • identification information indicating a measurement configuration of the "conditional handover execution condition" of each target cell, such as measID, if the measurement result of a target cell is satisfied.
  • high frequency frequencies up to 100 GHz can be used.
  • High frequency frequencies have high path loss, high air absorption (oxygen absorption, rain fading, fog fading), and sensitivity to shadow fading.
  • the penetration loss is high, so when the high frequency link is blocked by the barrier, link blockage easily occurs.
  • the source cell may indicate more than one "conditional handover execution condition" for the conditional handover target cell in the RRCReconfiguration, that is, indicating identification information exceeding one measurement configuration.
  • the source base station indicates two measIDs, measID1 and measID2, for a conditional handover target cell in RRCReconfiguration, where measID1 and measID2 are respectively associated with two different reportConfig, reportConfig1 and reportConfig2.
  • the A5 event configured in reportConfig1 is: the signal quality of the serving cell is lower than X1, and the signal quality of the neighboring cell is higher than Y1.
  • the A5 event configured in reportConfig2 is: the signal quality of the serving cell is lower than X2, and the signal quality of the neighboring cell is higher than Y2.
  • the "advance switching preparation condition" is also configured as an A5 event (the signal quality of the serving cell is lower than X0, the signal quality of the neighboring cell is higher than Y0), or the "pre-switching preparation condition” is configured as an A4 event (neighbor).
  • the signal quality of the zone is higher than Y0)
  • Y0 ⁇ Y1 ⁇ Y2 is configured
  • X1 ⁇ X2 ⁇ X0 is configured.
  • the handover preparation process is completed before the "actual handover condition" is satisfied.
  • the handover command is sent to the UE in advance when the signal quality of the source cell is still good enough. Therefore, the conditional handover execution condition is compared with the existing handover technology.
  • the trigger time can be later than the trigger time of the "actual switching condition" in the existing switching technology.
  • the source base station transmits the conditional handover target cell list to the UE (refer to Embodiment 1 step S440), except for the ARFCN and PCI of each conditional handover cell given in the conditional handover target cell list, the conditional handover command of the target cell, and In addition to the identification information (such as measID) indicating the measurement configuration of the "conditional switching execution condition" of the target cell, the modification (if previously configured) or the addition (if not previously configured) the measurement object associated with the measID (measurement object)
  • the cell-level offset of the target cell in the configuration, and the cell-level offset is used when the UE evaluates the "conditional switching execution condition" of the target cell.
  • the UE deletes the saved measurement result of the measurement object, and stops the periodic reporting timer (the periodic reporting timer) for reporting the measurement result of the measurement object.
  • the timer timeToTrigger
  • the timer for filtering the measurement result of the measurement object by layer 3 (L3, here referred to as the RRC layer) is stopped.
  • the above operation is not performed when the cell level offset is modified or increased.
  • the source base station transmits the conditional handover target cell list to the UE (refer to Embodiment 1 step S440), except for the ARFCN and PCI of each conditional handover cell given in the conditional handover target cell list, the conditional handover command of the target cell, and In addition to the identification information (such as measID) indicating the measurement configuration of the "conditional switching execution condition" of the target cell, an offset or a threshold value is also given. According to the design of the system, after receiving the offset or threshold, the UE takes one of the following operations:
  • Operation 1 The offset or threshold value configured in the measurement object associated with the identification information (such as measID) of the measurement configuration of the "conditional switching execution condition" of the target cell is replaced by the offset or the threshold.
  • identification information such as measID
  • Operation 2 calculating an offset or threshold value configured in the measurement object associated with the identification information (such as measID) of the measurement configuration of the "condition switching execution condition" of the target cell of the target cell And.
  • identification information such as measID
  • the UE calculates the offset or the threshold according to one of the foregoing operations, the calculated offset or threshold is used to evaluate whether the target cell satisfies the “conditional handover execution condition”.
  • the A3 event that the base station configures for the UE in measID1 is that the signal quality of the neighboring cell is higher than the signal quality of the serving cell, and the offset is configured to be 3 dB.
  • the base station indicates, in the conditional handover target cell list, that the identification information of the measurement configuration of the "conditional handover execution condition" of one target cell is measID1, and an offset of 2 dB is configured.
  • the UE After receiving the offset, the UE performs operation 2, and obtains an offset of A3 time of measID1 of 5 dB.
  • the UE evaluates whether the target cell satisfies the A3 event by using 5 dB, that is, the conditional handover execution condition is satisfied.
  • the A3 event is taken as an example.
  • the A3 event configured by the base station for the UE in the measID1 is that the signal quality of the neighboring cell is higher than the signal quality of the serving cell, and the offset is configured as 3dB.
  • the base station indicates, in the conditional handover target cell list, that the identification information of the measurement configuration of the "conditional handover execution condition" of one target cell is measID1, and an offset of 5 dB is configured.
  • the UE After receiving the offset, the UE performs operation 1, and obtains an offset of A3 time of measID1 of 5 dB.
  • the UE evaluates whether the target cell satisfies the A3 event by using 5 dB, that is, the conditional handover execution condition is satisfied.
  • the source base station configures two sets of parameters for the same event, such as configuring two thresholds for evaluating neighboring cells, configuring two offsets, and indicating that one set of two sets of parameters is used for normal switching, and the other set is used for normal switching. Conditional switching.
  • the configuration of the A4 event (the signal quality of the neighboring cell is higher than the threshold) is used to configure two thresholds Th1 and Th2, and the Th1 is used for normal handover, and the Th2 is used for conditional handover.
  • the UE uses Th1 to evaluate whether the target cell meets the normal handover condition. It is judged by Th2 whether the target cell satisfies the "conditional switching execution condition".
  • 5G systems can use high frequency frequencies up to 100 GHz, and blockages are prone to occur when high frequency links are blocked by obstacles.
  • two mechanisms are used to detect the quality of the radio link, that is, beam link monitoring and radio link monitoring.
  • the UE determines that a beam failure occurs, the UE performs a beam failure recovery, and the beam recovery may fail, such as finding a beam with a sufficiently good signal quality, or, for example, not receiving beam recovery from the base station. Response, etc.
  • the UE after receiving the RRCReconfiguration message sent by the source base station and including the conditional handover target cell list, if the UE determines that the source cell beam recovery fails or the radio link fails, the UE selects one of the conditional handover target cells, and switches to The target cell.
  • FIG. 8 is a flowchart of an implementation of the embodiment, including: S610-S640, which are respectively the same as Embodiments S410, S420, S430, and S440.
  • the UE feeds back an RRCReconfigurationComplete message to the source base station.
  • conditional handover target cell satisfies its corresponding “conditional handover execution condition”
  • the UE determines that the beam recovery fails or the radio link fails.
  • the UE selects a conditional handover target cell.
  • the UE may select the cell with the best signal quality in the target cell list, or the UE may select the cell with the highest quality beam number in the target cell list, or the UE may switch the target cell list according to its own algorithm selection condition. a target cell.
  • the UE accesses the selected target cell.
  • S690 The UE sends an RRCReconfigurationComplete to the target cell.
  • the conditional handover command generated by the multiple conditional handover target cells (hereinafter referred to as RRCReconfiguration-cond) is included in the RRCReconfiguration generated by the source base station, and is sent to the UE, where RRCReconfiguration is included.
  • the source base station allocates a rrc-TransactionIdentifier for the RRC message, and the RRCReconfiguration-cond includes a rrc-TransactionIdentifier allocated by the target cell to the RRCReconfiguration-cond.
  • the UE When the UE feeds back the RRCReconfigurationComplete message to the source base station, the UE carries the rrc-TransactionIdentifier allocated by the source base station for the RRCReconfiguration, and when the UE accesses a conditional handover target cell, the RRCReconfigurationComplete message fed back to the target cell is the RRCReconfiguration.
  • the rrc-TransactionIdentifier assigned by the -cond message is the RRCReconfiguration.
  • FIG. 9 is a flowchart illustrating an implementation of the fifth embodiment, including: S701 to S704, which are respectively described in the alternative embodiments S410, S420, S430, and S440.
  • the rrc-TransactionIdentifier allocated by the source base station to the RRCReconfiguration message generated by the source base station is rrc-TransactionIdentifier1
  • the RRCReconfiguration message includes a conditional handover target cell X, and the conditional handover target cell X
  • the rrc-TransactionIdentifier in the RRCReconfiguration-cond message is rrc-TransactionIdentifierX-1.
  • the UE After receiving the S704, the UE feeds back a RRCReconfigurationComplete message to the source base station, where the message includes rrc-TransactionIdentifier1.
  • the source base station determines that the information that has been configured for the UE needs to be updated.
  • the source base station needs to perform configuration update on the configuration parameters of the source cell, such as the DRB configuration.
  • the source base station sends an RRCReconfiguration to the UE, where the rrc-TransactionIdentifier of the message is rrc-TransactionIdentifier2, and the message does not include any conditional handover target cell information.
  • the UE After receiving the S707, the UE feeds back an RRCReconfigurationComplete message to the source base station, where the message includes rrc-TransactionIdentifier2.
  • the source base station sends a handover request to the target base station.
  • the configuration of the conditional handover target cell X (included in the RRCReconfiguration-cond) is configured by the conditional handover target cell X according to the configuration information of the source cell. Therefore, when the configuration of the source cell is updated, the configuration of the conditional handover target cell X also needs to be corresponding. Update. Therefore, the source base station transmits a handover request to the target base station. It should be noted that there is no strict timing relationship between the three steps S709, S707, and S708. For example, S709 can be sent simultaneously with S707.
  • the target base station feeds back a handover request response to the source base station, where the handover request response includes configuration information of the updated conditional handover target cell X.
  • the configuration information is included in the RRCReconfiguration-cond generated by the conditional handover target cell X.
  • the rrc-TransactionIdentifier contained in the RRCReconfiguration-cond is rrc-TransactionIdentifierX2.
  • the source base station sends an RRCReconfiguration to the UE, where the rrc-TransactionIdentifier of the message is rrc-TransactionIdentifier3, where the message includes the RRCReconfiguration-cond (including rrc-TransactionIdentifierX2) of the conditional handover target cell X received from S710.
  • the RRCReconfiguration transmission fails, that is, the UE does not receive the message.
  • the cell X satisfies the "condition switching execution condition".
  • the UE accesses the cell X.
  • the UE feeds back a RRCReconfigurationComplete message to the cell X, where the message includes rrc-TransactionIdentifierX-1.
  • the rrc-TransactionIdentifierX-1 can determine the configuration information used by the UE to access the cell X.
  • the UE switches the target cell by using a random access access condition.
  • the UE does not need to switch the target cell through random access conditions, such as when the TA between the conditional handover target cell and the source base station is the same or the TA between the UE and the conditional handover target cell is 0.
  • RACH-less handover When the UE does not need to perform random access in the target cell, such handover may be referred to as RACH-less handover.
  • the target cell adopts one of the following two operations after receiving the handover request of the source cell.
  • Operation 1 Configure an uplink grant for the UE, and configure the configured uplink grant to be included in the RRCReconfiguration message generated by the target cell.
  • the RRCReconfiguration feeds back to the source base station by using the handover request response message, and then the source base station sends the received RRCReconfiguration to the UE.
  • the handover is performed, and the uplink grant configured in the RRCReconfiguration is used to directly send the uplink data on the target cell.
  • Operation 2 The target base station generates an RRCReconfiguration, and the uplink grant is not configured in the RRC Reconfiguration, but the UE is instructed to perform RACH-less handover.
  • the target base station feeds back the handover request response message to the source base station, the target base station starts scheduling the UE.
  • the RRCReconfiguration feeds back to the source base station by using the handover request response message, and then the source base station sends the received RRCReconfiguration to the UE.
  • the UE listens to the scheduling of the target base station, and directly sends the uplink data on the target cell according to the scheduling of the target base station. Or receive downlink data.
  • the target base station needs to configure the uplink grant in advance or start scheduling the UE in advance.
  • the UE directly performs the handover after receiving the handover command, and the mechanism for configuring the uplink grant or scheduling the UE in advance is configured. Does not cause too much waste of resources. However, if it is applied to the conditional switching process, since the switching preparation is performed in advance, the real switching is performed until the "conditional switching execution condition" is satisfied, thereby causing considerable waste of resources. To solve this problem, two solutions are proposed here.
  • Solution 1 After the conditional handover target cell receives the SRS (Sounding Reference Signal) sent by the UE, the configured uplink authorization takes effect (if the uplink authorization is configured in the conditional handover command (RRCReconfiguration)), or the target handover target cell is switched. Start scheduling;
  • SRS Send Reference Signal
  • FIG. 10 is a flowchart of an implementation of the first solution, including: S810 to S820, which are respectively the same as Embodiments 1 S410 and S420.
  • the target base station feeds back a handover request response to the source base station.
  • the handover request response includes a target cell configuration list.
  • the RRCReconfiguration generated by the target cell may include an uplink grant configured by the target cell for the UE in advance, and whether the uplink grant is configured, and the target cell determines according to its own algorithm and policy.
  • the uplink authorization configuration does not take effect immediately.
  • the source base station sends a condition switching command to the UE.
  • the UE feeds back an RRCReconfigurationComplete message to the source base station.
  • the UE sends an SRS to the target cell X.
  • the UE sends an SRS to the target cell X according to the SRS configured by the target cell X in the conditional handover command.
  • the target cell X receives the SRS from the UE, if the uplink authorization is configured in S830, the uplink authorization is valid. If the uplink grant is not configured in S830, the UE is scheduled to be scheduled.
  • the UE feeds back an RRCReconfiguration complete message to the target cell X.
  • Solution 2 After the conditional handover command (RRCReconfiguration) is generated, the timer T is started. After the timer T expires, the configured uplink authorization takes effect (if the uplink is configured in the conditional handover command (RRCReconfiguration)). Authorization), or conditional handover of the target cell before scheduling begins.
  • FIG 11 is a flowchart of the implementation of the second embodiment, including: S910 to S930, respectively, the foregoing schemes S910, S920, and S930.
  • conditional handover target cell starts the timer T after generating the conditional handover command (RRCReconfiguration).
  • the timer T expires, and the configured uplink authorization takes effect (if the uplink authorization is configured in the conditional handover command (RRCReconfiguration)), or the conditional handover target cell starts to perform scheduling.
  • a switching device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 12 is a structural block diagram of a switching apparatus according to an embodiment of the present disclosure.
  • the apparatus includes: 1) a receiving module 122, configured to receive, by a user equipment UE, a radio resource control reconfiguration message sent by a source base station, where The radio resource control reconfiguration message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: frequency point information of the target cell, and target cell a physical cell identifier, a conditional handover command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information is used to indicate an execution condition of the UE for performing conditional handover in the target cell; 2) the first handover
  • the module 124 is configured to perform handover according to the radio resource control reconfiguration message.
  • the present disclosure solves the measurement report or handover in the related art by configuring a target cell list and selecting one target cell from multiple target cells.
  • the problem of handover failure caused by the failure of command transmission improves the mobile performance.
  • the conditional handover command of the target cell is sent by the target cell to the source base station by using an interface message, where the interface message includes a target cell configuration list, and each of the target cell configuration lists is
  • the configuration of the target cell includes: a cell global identifier CGI of the target cell, a conditional handover command of the target cell, and one of the following information: protocol data unit PDU session information successfully received on the target cell, and an evolved wireless connection successfully received on the target cell.
  • E-RAB information Into the E-RAB information.
  • conditional handover command of the target cell includes a radio resource control RRC message transmission identifier that is allocated by the target cell to the conditional handover command.
  • the foregoing apparatus further includes: modifying or adding the measurement object configuration associated with the measurement configuration identifier information.
  • the information of each target cell in the target cell list that performs the conditional handover includes: offset, when the information of each target cell in the target cell list that performs the conditional handover includes the at least one measurement configuration identifier information. Quantity or threshold.
  • the apparatus further includes: in the measurement object configuration that is used by the UE to use the offset or the threshold to replace the measurement configuration identifier information.
  • the offset or the threshold value; or the UE calculates the sum of the offset or the threshold value in the measurement object configuration associated with the offset or the threshold value and the measurement configuration identification information.
  • the foregoing apparatus further includes: the UE receiving, by the source base station, at least two sets of parameters configured for the same measurement event; or The above-mentioned UE receives at least two sets of parameters configured by the source base station to perform the same measurement event carried in the radio resource control reconfiguration message; wherein the two sets of parameters include: a first set of parameters and a second set of parameters, The first set of parameters is used to indicate that the UE performs conditional handover, and the second set of parameters is used to instruct the UE to perform unconditional handover.
  • the performing, by the foregoing UE, the handover according to the radio resource control reconfiguration message includes: if the measurement result of the at least one target cell included in the radio resource control reconfiguration message meets the reporting condition of the report configuration associated with the measurement configuration identifier information And determining to satisfy an execution condition that the UE performs conditional handover in the target cell; and the UE switches to the target cell.
  • the apparatus further includes: if the UE determines that beam recovery fails in the source cell or the radio link fails, the UE is in the target cell list. One target cell is selected; the UE switches to the target cell.
  • the foregoing apparatus further includes: the UE feeding back a radio resource control reconfiguration complete message to the source base station; wherein the radio resource control reconfiguration complete message And carrying the RRC message transmission identifier allocated by the source base station to the foregoing radio resource control reconfiguration message.
  • the device when the UE performs the handover according to the radio resource control reconfiguration message, the device further includes: the radio resource control reconfiguration complete message fed back by the UE to the target cell, where the target cell is allocated by the condition switching command RRC message transmission identifier.
  • FIG. 13 is a structural block diagram of another switching device according to an embodiment of the present disclosure.
  • the device includes: 1) a second switching module 132, configured to: Transmitting, to the user equipment UE, a radio resource control reconfiguration message, where the radio resource control reconfiguration message includes a target cell list for performing conditional handover by the UE, and information of each target cell in the target cell list for performing conditional handover includes the following At least one of: the frequency point information of the target cell, the physical cell identifier of the target cell, the conditional handover command of the target cell generated by the target cell, and the at least one measurement configuration identifier information, where the measurement configuration identifier information is used to indicate the UE The execution condition of the conditional handover is performed in the target cell.
  • the conditional handover command of the target cell is sent by the target cell to the source base station by using an interface message, where the interface message includes a target cell configuration list, and each of the target cell configuration lists is
  • the configuration of the target cell includes: a cell global identifier CGI of the target cell, a conditional handover command of the target cell, and one of the following information: protocol data unit PDU session information successfully received on the target cell, and an evolved wireless connection successfully received on the target cell.
  • E-RAB information Into the E-RAB information.
  • the foregoing apparatus further includes: after the target cell receives the sounding reference information SRS sent by the UE, the uplink grant configured by the target cell in the condition switching command is effective or the target cell starts to perform scheduling; or The target cell starts the timer after the RRC message is generated. After the timer expires, the uplink grant configured by the target cell in the condition switch command is effective or the target cell starts to be scheduled. .
  • the apparatus shown in FIG. 13 selects only one target cell compared to the existing conditional handover, and the present disclosure solves the measurement report or handover in the related art by configuring the target cell list and selecting one target cell from the plurality of target cells.
  • the problem of handover failure caused by the failure of command transmission improves the mobile performance.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • Embodiments of the present disclosure also provide a storage medium having stored therein a computer program, wherein the computer program is configured to execute the steps of any one of the method embodiments described above.
  • the foregoing storage medium may be configured to store a computer program for performing the following steps: S1, the user equipment UE receives a radio resource control reconfiguration message sent by the source base station, where the radio resource
  • the control reconfiguration message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: frequency information of the target cell, and physicality of the target cell.
  • the UE performs handover according to the radio resource control reconfiguration message.
  • the storage medium is further configured to store a computer program for performing the following steps: S1, the source base station sends a radio resource control reconfiguration message to the user equipment UE, wherein the radio resource control reconfiguration message includes the The UE performs the conditional handover target cell list, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: the frequency point information of the target cell, the physical cell identifier of the target cell, and the target cell generated by the target cell. a condition switching command of the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information is used to indicate an execution condition of the UE performing condition switching in the target cell.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • Embodiments of the present disclosure also provide an electronic device including a memory and a processor having a computer program stored therein, the processor being configured to execute a computer program to perform the steps of any one of the method embodiments described above.
  • the electronic device may further include a transmission device and an input and output device, wherein the transmission device is connected to the processor, and the input and output device is connected to the processor.
  • the foregoing processor may be configured to perform the following steps by using a computer program: S1, the user equipment UE receives a radio resource control reconfiguration message sent by the source base station, where the radio resource control reconfiguration The message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list that performs the conditional handover includes at least one of the following: frequency point information of the target cell, physical cell identifier of the target cell, a condition switching command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where the measurement configuration identifier information is used to indicate an execution condition of the UE performing condition switching in the target cell; S2, the UE Switching is performed according to the radio resource control reconfiguration message.
  • S1 the user equipment UE receives a radio resource control reconfiguration message sent by the source base station, where the radio resource control reconfiguration The message includes a target cell list in which the UE performs conditional handover, and the information of each target cell in the target cell list
  • the electronic device is further arranged to store a computer program for performing the following steps:
  • the source base station sends a radio resource control reconfiguration message to the user equipment UE, where the radio resource control reconfiguration message includes a target cell list that is used for conditional handover by the UE, where each of the target cell lists for performing conditional handover is performed.
  • the information of the target cell includes at least one of: frequency point information of the target cell, a physical cell identifier of the target cell, a condition switching command of the target cell generated by the target cell, and at least one measurement configuration identifier information, where The measurement configuration identifier information is used to indicate an execution condition that the UE performs conditional handover in the target cell.
  • modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.

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Abstract

本公开提供了一种切换方法及装置，其中，该方法包括：用户设备UE接收源基站发送的无线资源控制重配置消息，其中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件；该UE根据该无线资源控制重配置消息进行切换。

Description

切换方法及装置
本申请要求在2018年05月14日提交中国专利局、申请号为201810456476.4的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及通信领域，具体而言，涉及一种切换方法及装置。
背景技术
移动性能是无线通信系统中最重要的指标之一，业界一直致力于提高无线通信系统中的移动性能，比如第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)一直以来都在持续讨论和评估如何提高移动性能，包括降低切换失败概率，降低乒乓概率等。
以LTE的切换过程为例，在基于无线信号质量的切换中，无论是最基础的切换过程(basic handover)还是先通后断(Make-before-Break，简称为MBB)、无随机接入的切换(RACH-less HO)等增强切换流程，都是在满足“实际切换条件(移动性条件)(actual handover/mobility condition)”时才触发切换，也就是说，切换命令都是在满足“实际切换条件”时才发送给UE。这里，“实际切换条件”是指目标小区的信号质量足够好，UE切换到目标小区后可以进行正常的通信，反之，如果UE继续留在源小区，则可能导致无线链路失败。LTE系统中，“实际切换条件”可以是信号质量满足A3事件(邻区的信号质量比服务小区的信号质量高出一个偏移量)，A4事件(邻区的信号质量高于门限)或A5事件(服务小区的信号质量低于门限1，邻区的信号质量高于门限2)等，“实际切换条件”的参数重配置，比如A3事件的偏移量，A4/A5事件的门限，通常是在网规网优之后确定的。
在满足“实际切换条件”时才触发切换的机制最初是针对同构低频网络设计的，然而随着网络的演进，在同构网络之外还部署了异构网络(HetNet)，比如在传统蜂窝宏小区覆盖范围内部署微小区。此外在5G系统中，除了使用低频频率，将可以使用高达100GHz的高频频率。在5G系统中，小区部署将变得越来越密集，小区覆盖范围相对于5G之前的系统也将变得越来越小，这将使得5G系统中的切换(移动性)频率相对之前的系统变得更频繁。另外经过评估发现，在5G系统中测量报告和切换命令的发送更容易失败。更频繁的切换，更高的测量报告和切换命令失败概率，最终都导致5G系统更高的切换失败概率，乒乓概率，无线链路失败概率等。
针对相关技术中，测量报告或切换命令发送失败导致的切换失败的问题，尚未提出有效的解决方案。
发明内容
本公开实施例提供了一种切换方法及装置，以至少解决相关技术中测量报告或切换命令发送失败导致的切换失败的问题。
根据本公开的一个实施例，提供了一种切换方法，包括：用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；所述UE根据所述无线资源控制重配置消息进行切换。
根据本公开的另一个实施例，提供了一种切换方法，包括：源基站向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
根据本公开的再一个实施例，提供了一种切换装置，应用于用户设备UE包括：接收模块，用于用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；第一切换模块，用于根据所述无线资源控制重配置消息进行切换。
根据本公开的又一个实施例，提供了一种切换装置，应用于基站，包括：第二切换模块，用于向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
根据本公开的又一个实施例，还提供了一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本公开的又一个实施例，还提供了一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
通过本公开，用户设备UE接收源基站发送的无线资源控制重配置消息，其中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件；该UE根据该无线资源控制重配置消息进行切换。也就是说，相比于现有的条件切换仅选择一个目标小区，本公开通过配置目标小区列表，从多个目标小区中选择一个目标小区，进而解决了相关技术中测量报告或切换命令发送失败导致的切换失败的问题，提高了移动性能。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是根据本公开实施例的切换方法流程图；
图2是根据本公开实施例的另一切换方法流程图；
图3是根据本公开可选实施例的切换场景示意图(一)；
图4是相关切换技术的失败流程图；
图5是根据本公开可选实施例的条件切换的切换流程图；
图6是根据本公开可选实施例的条件切换的切换准备流程图；
图7是根据本公开可选实施例的切换场景示意图(二)；
图8是本公开可选实施例四的实施流程图；
图9是本公开可选实施例五的实施流程图；
图10是本公开可选实施例六中方案一的实施流程图；
图11是本公开可选实施例六中方案二的实施流程图；
图12是根据本公开实施例的切换装置的结构框图；
图13是根据本公开实施例的另一切换装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
在本实施例中提供了一种切换方法，图1是根据本公开实施例的切换方法流程图，如图1所示，该流程包括如下步骤。
步骤S102，用户设备UE接收源基站发送的无线资源控制重配置消息，其 中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件。
步骤S104，该UE根据该无线资源控制重配置消息进行切换。
通过上述步骤，相比于现有的条件切换仅选择一个目标小区，本公开通过配置目标小区列表，从多个目标小区中选择一个目标小区，进而解决了相关技术中测量报告或切换命令发送失败导致的切换失败的问题，提高了移动性能。
在一个可选地实施方式中，上述目标小区的条件切换命令，由上述目标小区通过接口消息发送至上述源基站；其中，上述接口消息中包括目标小区配置列表，上述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
可选地，上述目标小区的条件切换命令中包含上述目标小区为上述条件切换命令分配的无线资源控制RRC消息传输标识。
可选地，在上述进行条件切换的目标小区列表中每个目标小区的信息包括上述至少一个测量配置标识信息时，上述方法还包括：修改或增加上述测量配置标识信息所关联的测量对象配置中上述目标小区的小区级偏移。
可选地，在上述进行条件切换的目标小区列表中每个目标小区的信息包括上述至少一个测量配置标识信息时，上述进行条件切换的目标小区列表中每个目标小区的信息还包括：偏移量或门限值。
可选地，在上述UE接收到上述偏移量或上述门限值时，上述方法还包括：上述UE使用上述偏移量或上述门限值取代上述测量配置标识信息所关联的测量对象配置中的偏移量或者门限值；或者，上述UE计算上述偏移量或上述门限值与上述测量配置标识信息所关联的测量对象配置中的偏移量或者门限值的和。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之前，上述方法还包括：上述UE接收上述源基站对于同一个测量事件所配置的至少两套参数；或者，上述方法还包括：上述UE接收上述源基站通过上述无线资源控制重配置消息中携带的对于同一个测量事件所配置的至少两套参数；其中，上述两套参数包括：第一套参数、第二套参数，上述第一套参数用于指示上述UE执行条件切换，上述第二套参数用于指示上述UE执行非条件切换。
需要说明的是，上述同一个测量事件可以为上述测量配置标识信息所关联的测量报告配置中配置的测量事件。
可选地，上述UE根据上述无线资源控制重配置消息进行切换包括：若上述无线资源控制重配置消息中包括的至少一个目标小区的测量结果满足上述测量配置标识信息所关联的报告配置的上报条件，则判断满足上述UE在上述目标小 区进行条件切换的执行条件；上述UE切换至上述目标小区。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之后，上述方法还包括：若上述UE判断在源小区发生波束恢复失败或者无线链路失败，则上述UE在上述目标小区列表中选择一个目标小区；上述UE切换至上述目标小区。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之后，上述方法还包括：上述UE向上述源基站反馈无线资源控制重配置完成消息；其中，上述无线资源控制重配置完成消息中携带上述源基站为上述无线资源控制重配置消息分配的RRC消息传输标识。
可选地，在上述UE根据上述无线资源控制重配置消息进行切换时，上述方法还包括：上述UE向目标小区反馈的无线资源控制重配置完成消息中携带上述目标小区为上述条件切换命令分配的RRC消息传输标识。
在本实施例中还提供了一种切换方法，图2是根据本公开实施例的另一切换方法流程图，如图2所示，该流程包括如下步骤。
步骤S202，源基站向用户设备UE发送无线资源控制重配置消息，其中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，其中，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件。
通过上述步骤，相比于现有的条件切换仅选择一个目标小区，本公开通过配置目标小区列表，从多个目标小区中选择一个目标小区，进而解决了相关技术中测量报告或切换命令发送失败导致的切换失败的问题，提高了移动性能。
在一个可选地实施方式中，上述目标小区的条件切换命令，由上述目标小区通过接口消息发送至上述源基站；其中，上述接口消息中包括目标小区配置列表，上述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
可选地，上述方法还包括：上述目标小区在收到上述UE发送的探测参考信息SRS之后，上述目标小区在条件切换命令中配置的上行授权才开始生效或者上述目标小区才开始进行调度；或者，上述目标小区在生成上述无线资源控制重配置消息后，启动定时器，在上述定时器超时之后，上述目标小区在条件切换命令中所配置的上行授权才开始生效或者上述目标小区才开始进行调度。
下面结合可选实施例以及示例，对本实施例进行举例说明。
如图3为一种可能的切换场景示意图，图3中UE从小区1向小区2移动，在现有切换技术中，在满足“实际切换条件”(如图3中的B点)时才发起切换过程。在5G系统中，由于小区的密集部署，高频频率的使用等，使用现有切换 技术将很容易导致切换失败，如图4给出了采用现有切换技术导致的一种可能的切换失败流程图。如图4所示，当UE移动到如图3所示的B点，判断满足“实际切换条件”时向源基站发送测量报告(S210)。源基站收到测量报告后，开始通知目标基站进行切换准备(S220)，在收到来自目标基站的切换请求响应消息(S230)之后，源基站向UE发送切换命令(S240)，但是由于此时源基站的信号质量已经变得很差，因此切换命令发送失败，一段时间后，UE在源基站发生无线链路失败(S250)。
为了克服现有切换技术应用到5G系统中导致的切换性能不理想的问题，业界提出条件切换(conditional handover)，或者也可以称为提前切换准备。条件切换的总体切换流程如图5所示，包括：
S310，UE在满足“提前切换准备条件”(或者也可以称为“条件切换触发条件”)时，向源基站发送测量报告。
测量报告中上报满足“提前切换准备条件”的小区的信息，包括小区标识，比如物理小区标识PCI，小区的测量结果，小区内满足上报条件的波束的测量结果等。这里波束的测量结果是指单独某个测量参考信号的测量结果，而小区的测量结果是小区内多个测量参考信信号经过平均之后的测量结果。测量参考信号比如同步信号块(SS Blocks)，信道状态信息参考信号(Channel State Information Reference Signal，CSI-RS)。
“提前切换准备条件”由基站配置给UE，“提前切换准备条件”在满足“实际切换条件”之前满足，比如图3中在A点满足“提前切换准备条件”。
S320，源基站向目标基站发送切换请求。
源基站收到测量报告后，根据测量报告向满足“提前切换准备条件”的目标小区发送切换请求。切换请求中包含UE在源基站的相关配置信息，目标小区的小区级测量结果，目标小区的波束测量结果。
S330.目标基站向源基站反馈切换请求响应。
切换请求响应中包含发送给UE的条件切换命令。条件切换命令中包含目标小区信息，UE接入目标小区所需要的信息，“条件切换执行条件”等。目标小区信息包含目标小区标识(PCI)，目标小区所用的频率信息。UE接入目标小区所需要的信息包括UE在目标小区进行随机接入的随机接入配置信息，目标小区的公共配置信息，目标小区配置给UE的专用配置信息等。
S340，源基站向UE发送条件切换命令。
S350，UE向源基站发送条件切换完成消息。
UE接收到条件切换命令后，不立即执行切换，继续留在源小区。UE继续对条件切换命令中指示的目标小区进行测量。
S360，目标小区满足“条件切换执行条件”。
如图3所示，当UE移动到B点时，小区2满足“条件切换执行条件”。
S370，UE接入小区2。比如UE通过随机接入接入小区2。
S380，UE向目标小区发送条件切换成功消息。
条件切换中，切换准备过程在满足“实际切换条件”之前提前完成，切换命令在源小区的信号质量还足够好的时候提前发送给UE，避免了现有切换技术中测量报告或切换命令发送失败导致的切换失败，有效提高了移动性能。
以下举详细可选实施例说明本公开实现条件切换的关键技术。
可选实施例一
条件切换中，为避免测量报告或切换命令的发送失败，UE在满足“实际切换条件”之前，也即在满足“提前切换准备条件”时就上报测量报告。为达到这个目的，“提前切换准备条件”比“实际切换条件”更宽松，比如，以配置A4事件(邻区的信号质量高于门限)为例，若满足“实际切换条件”的门限为Th1，满足“提前切换准备条件”的门限为Th2，则配置Th2<Th1。因为“提前切换准备条件”的门限比“实际切换条件”的门限低，因此相对于“实际切换条件”，会有多个邻区同时满足“提前切换准备”条件。如图6为条件切换的切换准备流程图，包括：
S410/S410’，UE在满足“提前切换准备条件”时，向源基站上报测量报告。
基站配置测量时，配置一个频率(frequency)为一个测量对象(measurement object)，不同的频率配置为不同的测量对象。不同频率上的小区满足“提前切换准备条件”，分别上报各自的测量报告，测量报告中上报该频率上所有满足“提前切换准备条件”的小区的信息。例如，源基站分别配置了对频率F1和F2的测量，F1对应测量对象1，F2对应测量对象2，本实施例中，F1和F2上的小区在差不多时间内相继触发测量报告，因此UE分别上报两个测量报告S410和S410’，测量报告中分别上报F1和F2上满足“提前切换准备条件”的所有小区的信息。
S420/S420’，源基站向目标基站发送切换请求。
本实施例中，源基站根据S410/S410’中所收到的测量报告，判断满足“提前切换准备条件”的小区分别位于目标基站T-gNB1和目标基站T-gNB2上。源基站向目标基站T-gNB1和T-gNB2发起切换请求。切换请求中除了包含UE在源基站的相关配置信息之外，包含目标小区列表，目标小区列表中至少包含每个目标小区的小区全局标识(CGI)，还可以包含每个目标小区的测量结果。
S430/S430’，目标基站向源基站反馈切换请求响应。
切换请求响应中包含目标小区配置列表，即包含目标基站接纳并成功完成切换配置的目标小区的配置信息。目标小区配置列表中包含每个目标小区的CGI，每个目标小区上成功接纳的PDU session信息(如果UE接入的是5G核心网)或E-RAB信息(如果UE接入的是LTE的核心网)，每个目标小区的条件切换命令。条件切换命令由目标小区生成，比如由目标小区生成RRC重配置消息(RRCReconfiguration)，所生成的RRCReconfiguration直接以字符流(OCTET STRING)的形式(或者也称容器container的形式)包含在切换请求响应中。每个目标小区生成的RRCReconfiguration消息都包含该目标小区为该RRCReconfiguration分配的RRC消息传输标识(rrc-TransactionIdentifier)。
S440，源基站向UE发送条件切换命令。
源基站向UE发送条件切换命令，条件切换命令包含在源基站生成的RRCReconfiguration中。一个RRCReconfiguration中可以包含多个目标小区的条件切换命令，即RRCReconfiguration中包含条件切换目标小区列表。条件切换目标小区列表中包含每个目标小区的频点信息和物理小区标识(PCI)，由目标小区生成的该目标小区的条件切换命令，以及至少一个指示该目标小区的“条件切换执行条件”的测量配置的标识信息。其中，目标小区的频点信息用绝对载频号(ARFCN)标识；指示该目标小区的“条件切换执行条件”的测量配置的标识信息，可以用测量配置标识(Measurement identity，measID)来标识。一个measID关联一个测量对象和一个报告配置，通过measID，UE可以确定该目标小区的“条件切换执行条件。源基站生成的RRCReconfiguration中包含源基站为该RRCReconfiguration消息分配的rrc-TransactionIdentifier。
可选实施例一中，S-gNB和T-gNB之间存在基站间接口，因此S-gNB和T-gNB之间的切换准备消息，包括源基站向目标基站发送的切换请求和目标基站向源基站反馈的切换请求响应都是通过基站间接口直接传递。在实际网络中，存在源基站和目标基站没有部署基站间接口的情况，在这种情况下，切换准备相关的所有消息都通过核心网传输，比如，也就是说源基站通过源基站与核心网之间的接口发送切换准备相关消息给核心网，核心网将接收到的消息通过核心网与目标基站之间的接口转发给目标基站。目标基站通过其与核心网之间的接口将切换准备相关的反馈消息发送给核心网，核心网将接收到的消息通过核心网与源基站之间的接口转发给源基站。其它可选实施例同此说明。
可选实施例二
条件切换中，UE在收到条件切换命令(包含在源小区生成的RRCReconfiguration中，如实施例一步骤S440所述)后，不立刻执行切换，而是继续留在源小区，对RRCReconfiguration中所包含的条件切换目标小区列表中的目标小区进行测量，当判断有目标小区满足RRCReconfiguration中指示的该小区的“条件切换执行条件”时，UE执行切换，接入所述目标小区。如实施例一步骤S440所述，源小区生成的RRCReconfiguration消息中包含用于指示每个目标小区的“条件切换执行条件”的测量配置的标识信息，比如measID，如果一个目标小区的测量结果满足用于指示该目标小区的“条件切换执行条件”的测量配置的measID所关联的报告配置(reportConfig)的上报条件，则判断满足该目标小区的“条件切换执行条件”。
在5G系统中将可以使用高达100GHz的高频频率，高频频率具有高路损，高空气吸收度(氧气吸收，雨衰落，雾衰落)，以及对阴影衰落敏感等特点，此外高频频率的穿透损耗很高，因此高频链路受到阻挡物阻挡时，很容易发生链路阻断(blockage)。为克服高频链路的上述特征，源小区在RRCReconfiguration中可以为条件切换目标小区指示超过一个(more than one)“条件切换执行条件”，也即指示超过一个测量配置的标识信息。以测量事件A5为例，源基站在 RRCReconfiguration中为一个条件切换目标小区指示了两个measID，measID1和measID2，其中measID1和measID2分别关联到两个不同的reportConfig，reportConfig1和reportConfig2。
其中，reportConfig1中配置的A5事件为：服务小区的信号质量低于X1，邻区的信号质量高于Y1。
reportConfig2中配置的A5事件为：服务小区的信号质量低于X2，邻区的信号质量高于Y2。
其中，配置X1<X2，Y1<Y2。本实施例中，假设“提前切换准备条件”也配置为A5事件(服务小区的信号质量低于X0，邻区的信号质量高于Y0)，或者“提前切换准备条件”配置为A4事件(邻区的信号质量高于Y0)，则配置Y0<Y1<Y2，配置X1<X2<X0。
基于以上配置，以图7的切换场景示意图为例，当UE在服务小区发生blockage时(图7的C点)，尽管X1取值很小，但由于发生blockage，服务小区信号质量满足小区X1，如果此时目标小区的信号质量已经高于Y1，则measID1所关联的reportConfig1满足上报条件，UE执行条件切换。而在正常没有发生blockage的情况下，当UE移动到B点时，满足measID2所关联的reportConfig2的上报条件，UE才执行条件切换。
可选实施例三
条件切换中，切换准备过程在满足“实际切换条件”之前提前完成，切换命令在源小区的信号质量还足够好的时候提前发送给了UE，因此相对于现有切换技术，“条件切换执行条件”的触发时间可以比现有切换技术中“实际切换条件”的触发时间更靠后。以A3事件为例，对于同一个切换场景，若现有切换结束中将A3事件的偏移配置为O1，而“条件切换执行条件”中将A3事件的偏移配置为O2，则可以配置O2>O1。为实现以上目的，本实施例例提出以下三种实施方式：
实施方式一
当源基站向UE发送条件切换目标小区列表时(参考实施例一步骤S440)，除了在条件切换目标小区列表中给出每个条件切换小区的ARFCN和PCI，该目标小区的条件切换命令，以及指示该目标小区的“条件切换执行条件”的测量配置的标识信息(如measID)之外，修改(若之前已经有配置)或增加(若之前没有配置)该measID所关联的测量对象(measurement object)配置中该目标小区的小区级偏移(cell Individual Offset)，小区级偏移用于UE评估该目标小区的“条件切换执行条件”时使用。通常情况下，当基站修改一个测量对象的配置参数时，UE会删除所保存的该测量对象的测量结果，停止用于上报该测量对象的测量结果的周期性测量报告定时器(periodical reporting timer)，停止用于对该测量对象的测量结果进行层3(L3，在这里是指RRC层)滤波的定时器(timeToTrigger)。本实施例中，为保证移动性能，修改或增加所述小区级偏移的时候不执行上述操作。
实施方式二
当源基站向UE发送条件切换目标小区列表时(参考实施例一步骤S440)，除了在条件切换目标小区列表中给出每个条件切换小区的ARFCN和PCI，该目标小区的条件切换命令，以及指示该目标小区的“条件切换执行条件”的测量配置的标识信息(如measID)之外，还给出一个偏移量或者门限值。根据系统的设计，UE收到该偏移量或者门限值后采取以下操作之一：
操作1：用该偏移量或者门限值取代所述目标小区的“条件切换执行条件”的测量配置的标识信息(如measID)所关联的测量对象中配置的偏移量或者门限值。
操作2：计算该偏移量或者门限值与在所述目标小区的“条件切换执行条件”的测量配置的标识信息(如measID)所关联的测量对象中配置的偏移量或者门限值的和。
UE根据上述操作之一计算得到偏移量或者门限值之后，用所述计算得到的偏移量或者门限值评估所述目标小区是否满足“条件切换执行条件”。
以A3事件为例，在收到切换目标小区列表之前，基站在measID1中为UE配置的A3事件为邻区的信号质量比服务小区的信号质量高出一个偏移量，偏移量配置为3dB。基站在条件切换目标小区列表中，指示一个目标小区的“条件切换执行条件”的测量配置的标识信息为measID1，并且配置了一个偏移量2dB。UE收到该偏移量后，执行操作2，得到measID1的A3时间的偏移量为5dB，UE用5dB评估该目标小区是否满足A3事件，即满足“条件切换执行条件”。
同样以A3事件为例，在收到切换目标小区列表之前，基站在measID1中为UE配置的A3事件为邻区的信号质量比服务小区的信号质量高出一个偏移量，偏移量配置为3dB。基站在条件切换目标小区列表中，指示一个目标小区的“条件切换执行条件”的测量配置的标识信息为measID1，并且配置了一个偏移量5dB。UE收到该偏移量后，执行操作1，得到measID1的A3时间的偏移量为5dB，UE用5dB评估该目标小区是否满足A3事件，即满足“条件切换执行条件”。
实施方式三
源基站在配置reportConfig时，对于同一个事件配置两套参数，比如配置两个用于评估邻区的门限，配置两个偏移，并且指示两套参数中一套用于普通切换，另一套用于条件切换。
以配置A4事件(邻区的信号质量高于门限)为例，配置两个门限Th1和Th2，并且指示Th1用于普通切换，Th2用于条件切换，UE用Th1评估目标小区是否满足普通切换条件，用Th2判断目标小区是否满足“条件切换执行条件”。
以配置A3事件(邻区的信号质量比服务小区的信号质量高出一个偏移量)，配置两个偏移量Offset1和Offset2，并且指示Offset1用于普通切换，Offset2用于条件切换，UE用Offset1评估目标小区是否满足普通切换条件，用Th2判断目标小区是否满足“条件切换执行条件”。
可选实施例四
5G系统可以使用高达100GHz的高频频率，而高频链路受到阻挡物阻挡时，很容易发生blockage。5G系统中，采用两种机制检测无线链路质量，即波束链路检测(beam link monitoring)和无线链路检测(radio link monitoring)。当UE判断发生波束失败(beam failure)时，UE执行波束恢复过程(beam failure recovery)，波束恢复有可能失败，比如找不到信号质量足够好的波束，或者比如没有收到来自基站的波束恢复响应等。
本实施例中，UE在收到源基站发送的包含条件切换目标小区列表的RRCReconfiguration消息后，若UE判断在源小区波束恢复失败或者无线链路失败，UE选择其中一个条件切换目标小区，切换到该目标小区。
如图8为本实施例的实施流程图，包括：S610～S640，分别同实施例一S410，S420，S430，S440。
S650，UE向源基站反馈RRCReconfigurationComplete消息。
S660，在有条件切换目标小区满足其对应的“条件切换执行条件”之前，UE判断波束恢复失败或者无线链路失败。
S670，UE选择一个条件切换目标小区。
UE可以选择条件切换目标小区列表中信号质量最好的小区，或者UE可以选择条件切换目标小区列表中质量好的波束个数最多的小区，或者UE可以根据自己的算法选择条件切换目标小区列表中的某个目标小区。
S680，UE接入所选择的目标小区。
S690，UE向目标小区发送RRCReconfigurationComplete。
可选实施例五
如可选实施例二所述，多个条件切换目标小区生成的条件切换命令(为便于区分描述，这里记为RRCReconfiguration-cond)被包含在源基站生成的RRCReconfiguration中发送给UE，其中RRCReconfiguration中包含源基站为该RRC消息分配的rrc-TransactionIdentifier，RRCReconfiguration-cond包含目标小区为该RRCReconfiguration-cond分配的rrc-TransactionIdentifier。UE在向源基站反馈RRCReconfigurationComplete消息时，携带源基站为RRCReconfiguration分配的rrc-TransactionIdentifier，UE在接入一个条件切换目标小区时，向目标小区反馈的RRCReconfigurationComplete消息中带UE所保存的该目标小区为RRCReconfiguration-cond消息分配的rrc-TransactionIdentifier。
如图9举例说明可选实施例五的实施流程图，包括：S701～S704，分别同可选实施例一S410，S420，S430，S440的说明。
需要说明的是，本可选实施例中，S704源基站为源基站生成的RRCReconfiguration消息分配的rrc-TransactionIdentifier为rrc-TransactionIdentifier1，RRCReconfiguration消息中包含一个条件切换目标小区X，该条件切换目标小区X的RRCReconfiguration-cond消息中的rrc-TransactionIdentifier为rrc-TransactionIdentifierX-1。
S705，UE收到S704后，向源基站反馈RRCReconfigurationComplete消息，消息中包含rrc-TransactionIdentifier1。
S706，源基站判断需要对已经配置给UE的信息进行配置更新。
比如本可选实施例中，源基站需要对源小区的配置参数(比如DRB配置)进行配置更新。
S707，源基站向UE发送RRCReconfiguration，该消息的rrc-TransactionIdentifier为rrc-TransactionIdentifier2，该消息中不包含任何条件切换目标小区信息。
S708，UE收到S707后，向源基站反馈RRCReconfigurationComplete消息，消息中包含rrc-TransactionIdentifier2。
S709，源基站向目标基站发送切换请求。
条件切换目标小区X的配置(包含在RRCReconfiguration-cond中)是由条件切换目标小区X根据源小区的配置信息配置的，因此当源小区的配置更新时，条件切换目标小区X的配置也需要相应更新。因此，源基站向目标基站发送切换请求。需要说明的是，S709，S707，S708三个步骤之间没有严格的时序关系，比如S709可以和S707同时发送。
S710，目标基站向源基站反馈切换请求响应，切换请求响应中包含更新后的条件切换目标小区X的配置信息，同样的，配置信息包含在由条件切换目标小区X生成的RRCReconfiguration-cond中，此时RRCReconfiguration-cond中包含的rrc-TransactionIdentifier为rrc-TransactionIdentifierX2。
S711，源基站向UE发送RRCReconfiguration，该消息的rrc-TransactionIdentifier为rrc-TransactionIdentifier3，该消息中包含从S710收到的条件切换目标小区X的RRCReconfiguration-cond(包含rrc-TransactionIdentifierX2)。
本可选实施例中，由于此时源小区的信号质量已经变的很差，RRCReconfiguration发送失败，即UE没有收到该消息。
S712，小区X满足“条件切换执行条件”。
S713，UE接入小区X。
S714，UE向小区X反馈RRCReconfigurationComplete消息，消息中包含rrc-TransactionIdentifierX-1。
当小区X收到RRCReconfigurationComplete后，通过rrc-TransactionIdentifierX-1可以判断UE接入小区X所使用的配置信息。
可选实施例六
以上所有可选实施例中，UE都通过随机接入接入条件切换目标小区。而有些部署场景下，UE无需通过随机接入接入条件切换目标小区，比如当条件切换目标小区和源基站之间TA相同或者UE和条件切换目标小区之间的TA为0。当UE无需在目标小区做随机接入时，这样的切换可以称之为无随机接入切换(RACH-less handover)。
现有切换技术中，采用RACH-less handover时，目标小区在收到源小区的切换请求后，采用以下两种操作中的其中一种。
操作1：为UE配置上行授权，将所配置的上行授权包含在目标小区生成的RRCReconfiguration消息中，RRCReconfiguration通过切换请求响应消息反馈给源基站，然后源基站将所收到的RRCReconfiguration发送给UE，UE收到RRCReconfiguration消息后，执行切换，用RRCReconfiguration中配置的上行授权直接在目标小区上发送上行数据。
操作2：目标基站生成RRCReconfiguration，RRCReconfiguration中不配置上行授权，但指示UE进行RACH-less handover。目标基站反馈切换请求响应消息给源基站之后，目标基站开始调度UE。RRCReconfiguration通过切换请求响应消息反馈给源基站，然后源基站将所收到的RRCReconfiguration发送给UE，UE收到RRCReconfiguration消息后，监听目标基站的调度，根据目标基站的调度直接在目标小区上发送上行数据或者接收下行数据。
上述两种操作中，目标基站需要提前配置上行授权或者提前开始调度UE，对于现有切换技术中，UE收到切换命令后直接执行切换，这种提前配置上行授权或者提前开始调度UE的机制并不会导致太多资源浪费。但是如果应用到条件切换流程中，由于切换准备是提前执行的，而真正的切换则要等到“条件切换执行条件”满足时才执行，因此会导致可观的资源浪费。为解决这个问题，这里提出两种方案。
方案一：条件切换目标小区在收到UE发送的SRS(Sounding Reference Signal)之后，所配置的上行授权才开始生效(若在条件切换命令(RRCReconfiguration)中配置了上行授权)，或者条件切换目标小区才开始进行调度；
如图10为方案一的实施流程图，包括：S810～S820，分别同实施例一S410，S420。
S830，目标基站向源基站反馈切换请求响应。
切换请求响应中包含目标小区配置列表，可选的，目标小区生成的RRCReconfiguration中可以包含目标小区为UE提前配置的上行授权，是否配置上行授权，由目标小区根据自己的算法和策略决定。
若配置了上行授权，上行授权配置之后并不立即生效。
S840，源基站向UE发送条件切换命令。
S850，UE向源基站反馈RRCReconfigurationComplete消息。
S860，有目标小区X满足“条件切换执行条件”。
S870，UE向目标小区X发送SRS。
UE根据条件切换命令中目标小区X为UE配置的SRS，向目标小区X发送SRS。
S880，目标小区X收到来自UE的SRS之后，如果在S830中配置了上行授权，则生效所述上行授权。如果在S830中未配置上行授权，则开始调度所述 UE。
S890，UE向目标小区X反馈RRCReconfiguration complete消息。
方案二：条件切换目标小区在生成条件切换命令(RRCReconfiguration)后，启动定时器T，在定时器T超时之后，所配置的上行授权才开始生效(若在条件切换命令(RRCReconfiguration)中配置了上行授权)，或者条件切换目标小区才开始进行调度。
如图11为方案二的实施流程图，包括：S910～S930，分别上述方案一S910，S920，S930。
S940，条件切换目标小区在生成条件切换命令(RRCReconfiguration)后，启动定时器T。
S950，同上述方案一S840。
S960，同上述方案一S850。
S970，定时器T超时，所配置的上行授权才开始生效(若在条件切换命令(RRCReconfiguration)中配置了上行授权)，或者条件切换目标小区才开始进行调度。
S980，同上述方案一S860。
S990，同上述方案一S890。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
实施例2
在本实施例中还提供了一种切换装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图12是根据本公开实施例的切换装置的结构框图，如图2所示，该装置包括：1)接收模块122，用于用户设备UE接收源基站发送的无线资源控制重配置消息，其中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件；2)第一切换模块124，用于根据该无线资源控制重配置消息进行切换。
通过图12所示装置，相比于现有的条件切换仅选择一个目标小区，本公开 通过配置目标小区列表，从多个目标小区中选择一个目标小区，进而解决了相关技术中测量报告或切换命令发送失败导致的切换失败的问题，提高了移动性能。
在一个可选地实施方式中，上述目标小区的条件切换命令，由上述目标小区通过接口消息发送至上述源基站；其中，上述接口消息中包括目标小区配置列表，上述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
可选地，上述目标小区的条件切换命令中包含上述目标小区为上述条件切换命令分配的无线资源控制RRC消息传输标识。
可选地，在上述进行条件切换的目标小区列表中每个目标小区的信息包括上述至少一个测量配置标识信息时，上述装置还包括：修改或增加上述测量配置标识信息所关联的测量对象配置中上述目标小区的小区级偏移。
可选地，在上述进行条件切换的目标小区列表中每个目标小区的信息包括上述至少一个测量配置标识信息时，上述进行条件切换的目标小区列表中每个目标小区的信息还包括：偏移量或门限值。
可选地，在上述UE接收到上述偏移量或上述门限值时，上述装置还包括：上述UE使用上述偏移量或上述门限值取代上述测量配置标识信息所关联的测量对象配置中的偏移量或者门限值；或者，上述UE计算上述偏移量或上述门限值与上述测量配置标识信息所关联的测量对象配置中的偏移量或者门限值的和。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之前，上述装置还包括：上述UE接收上述源基站对于同一个测量事件所配置的至少两套参数；或者，上述装置还包括：上述UE接收上述源基站通过上述无线资源控制重配置消息中携带的对于同一个测量事件所配置的至少两套参数；其中，上述两套参数包括：第一套参数、第二套参数，上述第一套参数用于指示上述UE执行条件切换，上述第二套参数用于指示上述UE执行非条件切换。
可选地，上述UE根据上述无线资源控制重配置消息进行切换包括：若上述无线资源控制重配置消息中包括的至少一个目标小区的测量结果满足上述测量配置标识信息所关联的报告配置的上报条件，则判断满足上述UE在上述目标小区进行条件切换的执行条件；上述UE切换至上述目标小区。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之后，上述装置还包括：若上述UE判断在源小区发生波束恢复失败或者无线链路失败，则上述UE在上述目标小区列表中选择一个目标小区；上述UE切换至上述目标小区。
可选地，在上述UE接收源基站发送的无线资源控制重配置消息之后，上述装置还包括：上述UE向上述源基站反馈无线资源控制重配置完成消息；其中，上述无线资源控制重配置完成消息中携带上述源基站为上述无线资源控制重配 置消息分配的RRC消息传输标识。
可选地，在上述UE根据上述无线资源控制重配置消息进行切换时，上述装置还包括：上述UE向目标小区反馈的无线资源控制重配置完成消息中携带上述目标小区为上述条件切换命令分配的RRC消息传输标识。
在本实施例中还提供了一种切换装置，图13是根据本公开实施例的另一切换装置的结构框图，如图13所示，该装置包括：1)第二切换模块132，用于向用户设备UE发送无线资源控制重配置消息，其中，该无线资源控制重配置消息中包括该UE进行条件切换的目标小区列表，该进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的该目标小区的条件切换命令、至少一个测量配置标识信息，其中，该测量配置标识信息用于指示该UE在该目标小区进行条件切换的执行条件。
在一个可选地实施方式中，上述目标小区的条件切换命令，由上述目标小区通过接口消息发送至上述源基站；其中，上述接口消息中包括目标小区配置列表，上述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
可选地，上述装置还包括：上述目标小区在收到上述UE发送的探测参考信息SRS之后，上述目标小区在条件切换命令中配置的上行授权才开始生效或者上述目标小区才开始进行调度；或者，上述目标小区在生成上述无线资源控制重配置消息后，启动定时器，在上述定时器超时之后，上述目标小区在条件切换命令中所配置的上行授权才开始生效或者上述目标小区才开始进行调度。
通过图13所示装置，相比于现有的条件切换仅选择一个目标小区，本公开通过配置目标小区列表，从多个目标小区中选择一个目标小区，进而解决了相关技术中测量报告或切换命令发送失败导致的切换失败的问题，提高了移动性能。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例3
本公开的实施例还提供了一种存储介质，该存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的计算机程序：S1，用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述 目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；S2，所述UE根据所述无线资源控制重配置消息进行切换。
可选地，存储介质还被设置为存储用于执行以下步骤的计算机程序：S1，源基站向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：S1，用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；S2，所述UE根据所述无线资源控制重配置消息进行切换。
可选地，电子装置还被设置为存储用于执行以下步骤的计算机程序：
S1，源基站向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多 个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (18)

  1. 一种切换方法，包括：
    用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；
    所述UE根据所述无线资源控制重配置消息进行切换。
  2. 根据权利要求1所述的方法，其中，
    所述目标小区的条件切换命令，由所述目标小区通过接口消息发送至所述源基站；
    其中，所述接口消息中包括目标小区配置列表，所述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
  3. 根据权利要求1所述的方法，其中，
    所述目标小区的条件切换命令中包含所述目标小区为所述条件切换命令分配的无线资源控制RRC消息传输标识。
  4. 根据权利要求1所述的方法，在所述进行条件切换的目标小区列表中每个目标小区的信息包括所述至少一个测量配置标识信息时，所述方法还包括：
    修改或增加所述测量配置标识信息所关联的测量对象配置中所述目标小区的小区级偏移。
  5. 根据权利要求1所述的方法，在所述进行条件切换的目标小区列表中每个目标小区的信息包括所述至少一个测量配置标识信息时，所述进行条件切换的目标小区列表中每个目标小区的信息还包括：偏移量或门限值。
  6. 根据权利要求5所述的方法，在所述UE接收到所述偏移量或所述门限值时，所述方法还包括：
    所述UE使用所述偏移量取代所述测量配置标识信息所关联的测量对象配置中的偏移量，或者所述UE使用所述门限值取代所述测量配置标识信息所关联的测量对象配置中的门限值；或者，
    所述UE计算所述偏移量与所述测量配置标识信息所关联的测量对象配置中的偏移量的和，或者所述UE计算所述门限值与所述测量配置标识信息所关联的测量对象配置中的门限值的和。
  7. 根据权利要求1所述的方法，
    在所述UE接收源基站发送的无线资源控制重配置消息之前，所述方法还包括：所述UE接收所述源基站对于同一个测量事件所配置的至少两套参数；或者，
    所述方法还包括：所述UE接收所述源基站通过所述无线资源控制重配置消息中携带的对于同一个测量事件所配置的至少两套参数；
    其中，所述两套参数包括：第一套参数、第二套参数，所述第一套参数用于指示所述UE执行条件切换，所述第二套参数用于指示所述UE执行非条件切换。
  8. 根据权利要求1所述的方法，其中，所述UE根据所述无线资源控制重配置消息进行切换包括：
    若所述无线资源控制重配置消息中包括的至少一个目标小区的测量结果满足所述测量配置标识信息所关联的报告配置的上报条件，则确定满足所述UE在所述目标小区进行条件切换的执行条件；
    所述UE切换至所述目标小区。
  9. 根据权利要求1所述的方法，在所述UE接收源基站发送的无线资源控制重配置消息之后，所述方法还包括：
    若所述UE判断在源小区发生波束恢复失败或者无线链路失败，则所述UE在所述目标小区列表中选择一个目标小区；
    所述UE切换至所述目标小区。
  10. 根据权利要求1所述的方法，在所述UE接收源基站发送的无线资源控制重配置消息之后，所述方法还包括：
    所述UE向所述源基站反馈无线资源控制重配置完成消息；
    其中，所述无线资源控制重配置完成消息中携带所述源基站为所述无线资源控制重配置消息分配的RRC消息传输标识。
  11. 根据权利要求1所述的方法，在所述UE根据所述无线资源控制重配置消息进行切换的情况下，所述方法还包括：
    所述UE向目标小区反馈的无线资源控制重配置完成消息中携带所述目标小区为所述条件切换命令分配的RRC消息传输标识。
  12. 一种切换方法，包括：
    源基站向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
  13. 根据权利要求12所述的方法，其中，
    所述目标小区的条件切换命令，由所述目标小区通过接口消息发送至所述源基站；
    其中，所述接口消息中包括目标小区配置列表，所述目标小区配置列表中每个目标小区的配置包括：目标小区的小区全局标识CGI、目标小区的条件切换命令，以及以下信息之一：目标小区上成功接纳的协议数据单元PDU会话信息、目标小区上成功接纳的演进的无线接入承载E-RAB信息。
  14. 根据权利要求12所述的方法，所述方法还包括：
    所述目标小区在收到所述UE发送的探测参考信息SRS之后，所述目标小区在条件切换命令中配置的上行授权才开始生效或者所述目标小区才开始进行调度；或者，
    所述目标小区在生成所述无线资源控制重配置消息后，启动定时器，在所述定时器超时之后，所述目标小区在条件切换命令中所配置的上行授权才开始生效或者所述目标小区才开始进行调度。
  15. 一种切换装置，应用于用户设备UE，包括：
    接收模块，用于用户设备UE接收源基站发送的无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件；
    切换模块，用于根据所述无线资源控制重配置消息进行切换。
  16. 一种切换装置，应用于基站，包括：
    切换模块，用于向用户设备UE发送无线资源控制重配置消息，其中，所述无线资源控制重配置消息中包括所述UE进行条件切换的目标小区列表，所述进行条件切换的目标小区列表中每个目标小区的信息包括以下至少之一：目标小区的频点信息、目标小区的物理小区标识、由目标小区生成的所述目标小区的条件切换命令、至少一个测量配置标识信息，其中，所述测量配置标识信息用于指示所述UE在所述目标小区进行条件切换的执行条件。
  17. 一种存储介质，所述存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至11或者权利要求12-14任一项中所述的方法。
  18. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权利要求1至11或者权利要求12-14任一项中所述的方法。
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