WO2014161450A1 - Method, device, and system for handing over user equipment during change of configuration of base station - Google Patents

Method, device, and system for handing over user equipment during change of configuration of base station Download PDF

Info

Publication number
WO2014161450A1
WO2014161450A1 PCT/CN2014/074386 CN2014074386W WO2014161450A1 WO 2014161450 A1 WO2014161450 A1 WO 2014161450A1 CN 2014074386 W CN2014074386 W CN 2014074386W WO 2014161450 A1 WO2014161450 A1 WO 2014161450A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
base station
handover
information
notification message
Prior art date
Application number
PCT/CN2014/074386
Other languages
French (fr)
Chinese (zh)
Inventor
王彦
鲍炜
刘爱娟
Original Assignee
电信科学技术研究院
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.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2014161450A1 publication Critical patent/WO2014161450A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present application relates to communication technologies, and in particular, to a user equipment switching method, apparatus, and system when a base station configuration is changed. System.
  • the network Increase or decrease system capacity through dynamic cell splitting or merging based on actual load conditions to achieve on-demand And the purpose of change.
  • dynamic cell splitting or merging means a change in the network topology, which will increase the handover failure. Rate, reduce network mobility performance.
  • AAS is typically designed to contain a limited number of different lobe widths.
  • AAS can be controlled The tilt and lobe widths give it a better resolution, and in certain scenes the beam and downtilt can Adjust based on the user's business model to maximize overall network performance.
  • Downtilt and beamwidth control The concept can be extended to technologies such as cell splitting. Adjusting the mode in the active antenna system makes the cell in the water Splitting in a flat or vertical direction produces an effect of cell splitting.
  • the main feature of this function is to split a cell into two cells in the vertical or horizontal plane, two co-frequency cells. Can have different tilt angles, beam shapes, and coverage radii, but with the same frequency, which increases resources Utilization rate.
  • This function is mainly suitable for some areas with limited frequency and high capacity requirements, such as high-rise office buildings and streets. Etc. Cover the scene. Due to the reuse of the original time-frequency resources, although there are some losses of interference and handover, it is still To effectively increase the capacity of the cell, and if the transmitted power of both cells after splitting is transmitted with the cell before the splitting When the power is the same, the coverage effect on the outer cell is also improved.
  • Figure 1 shows the active antenna hanging The topology is split into two cells.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network
  • the handover preparation process is defined on the X2 interface, as shown in Figure 2a and Figure 2b, when the serving base station is When a certain UE (User Equipment) triggers X2 handover preparation, the serving base station needs to go to the base station where the target cell is located through the X2 interface.
  • Sending a handover request HANDOVER REQUEST
  • resources are allocated according to the QoS (Quality of Service) value of the requested UE radio access bearer,
  • the UE related configuration information is saved in the UE context. If the resource allocation is successful, return the switch request confirmation. (HANDOVER REQUEST ACKNOWLEDGE) message; if the resource allocation fails, returning the switch preparation failure (HANDOVER PREPARATION FAILURE) message.
  • the source eNB (Evolved Base Station) is directed to the target eNB when preparing for handover.
  • the transmitted handover request signaling carries the context information of the UE, and includes information for UE RRC reestablishment, When the body is implemented, it can be implemented as follows:
  • Handover PreparationInformation which is used to transmit the target base station in the handover E-UTRA RRC information used in standby, including UE capability information.
  • AS-Context AS Context
  • AS Context this information is used to convey the local E-UTRAN context required by the target base station.
  • the physical cell identity of the source PCell used to determine the UE context in the target eNB at re-establishment.
  • RRC Radio Resource Control
  • ReestablishmentInfo Information for RRC (Radio Resource Control) reconstruction
  • additionalReestabInfoList the purpose of this information is, once the UE fails to switch, and selects the target base station The other cells of the non-target cell try to re-establish the RRC connection, which can ensure the successful completion of the RRC connection reestablishment. The UE loses the call due to the handover failure, and the impact on the user service is minimized.
  • the base station uses AAS technology to perform cell splitting or merging
  • the topology of the network changes, that is, the area The neighbor relationship between the inner cells changes, which inevitably affects the handover of the UE and reduces the handover performance of the network.
  • the neighboring base station triggers handover to the target cell for one UE, and when the UE attempts to access the target, The target cell has been split, and the location of the UE is covered by the new cell that appears after the target cell is split, due to the switching life.
  • the command contains the information of the original target cell, and the UE cannot identify the new cell, and the result cannot access the new cell, resulting in cutting. Change failed.
  • the UE selects the new cell to try the RRC connection reestablishment because the signal of the new cell is the strongest. Since the base station does not have the reconstruction information of the new cell, the RRC connection reestablishment fails, and the UE enters the IDLE state, resulting in Dropping words has a negative impact on the user's service.
  • the embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, to reduce a base.
  • the impact of station configuration changes on user service quality.
  • a user equipment switching method when a base station configuration is changed including:
  • the base station determines that cell splitting or merging needs to be performed
  • the base station sends a notification message to the neighboring base station, where the notification message carries the local cell to be split or merged.
  • the information and the information of the cell to be generated are switched by the neighboring base station according to the notification message.
  • a user equipment switching method when a base station configuration is changed including:
  • the notification message Before receiving the handover preparation for the user equipment UE, receiving a notification message sent by the base station performing cell splitting or merging, The notification message carries information about a local cell to be split or merged and information of a cell to be generated;
  • Switching is performed for the UE according to the notification message.
  • a user equipment switching device when a base station configuration is changed includes:
  • a determining unit configured to determine that a cell split or merge needs to be performed
  • a sending unit configured to send a notification message to the neighboring base station, where the notification message carries a split or merge
  • the information of the local cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.
  • a user equipment switching device when a base station configuration is changed includes:
  • a receiving unit configured to receive a base station performing cell splitting or merging before triggering handover preparation for the user equipment UE a notification message sent, the notification message carrying information of a local cell to be split or merged, and a message to be generated Cell information;
  • a switching unit configured to perform handover for the UE according to the notification message.
  • a user equipment switching system when a base station configuration is changed including:
  • the base station that performs handover for the user equipment UE is configured to receive the execution before triggering the handover of the user equipment UE.
  • the embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information. Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.
  • 1 is a topological diagram of vertical multi-sector splitting in the background art
  • FIG. 3 is a flowchart of a user equipment switching method when a base station configuration is changed according to an embodiment of the present disclosure
  • FIG. 4 is a second flowchart of a user equipment switching method when a base station configuration is changed according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a cell topology before or after a split in an application scenario according to an embodiment of the present disclosure
  • FIG. 5b is a schematic diagram of a cell topology after splitting or before merging in an application scenario according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure
  • FIG. 6b is a schematic structural diagram of a user equipment switching apparatus when a preferred base station configuration is changed according to an embodiment of the present disclosure. intention;
  • FIG. 7 is a second schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure
  • FIG. 8 is a schematic structural diagram of a user equipment switching system when a base station configuration is changed according to an embodiment of the present disclosure
  • FIG. 9 is a third schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure.
  • FIG. 10 is a fourth schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure.
  • the embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information. Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.
  • the base station sends a notification to the neighboring neighboring base stations through the inter-base station interface before performing the cell splitting or combining operation.
  • Interest for example, the notification message may be "Base Station Configuration Update Preparation eNB Configuration Update Prepare"
  • the information message includes information about a local cell to be split or merged, and information about a cell to be generated, the small District information, including but not limited to the following information:
  • the EARFCN of the cell (downlink carrier frequency);
  • E-CGI global identifier
  • the neighboring base station After receiving the notification message, the neighboring base station triggers the handover preparation for the UE, and the target cell is the cell that is being prepared to be split or merged in the notification message, according to the identity of the newly generated cell or the merged cell after the splitting ( CellIdentity), PCI, and EARFCN calculate a key (K eNB *) and a short message authentication code used for data integrity of signalling messages (short message authentication code for signaling message data integrity) of the cell, And adding the identifier of the cell, the calculated K eNB * and short MAC-I values to the additional reconstruction information (additionalReestabInfoList) in the RRC reconstruction information (ReestablishmentInfo), and then transmitting the message to the target base station through the handover request message (ie, cell splitting or merging) Base station).
  • K eNB * a key
  • a short message authentication code used for data integrity of signalling messages short message authentication code for signaling message data integrity
  • the base station performing cell splitting or merging receives the neighboring base station before completing the cell splitting or merging configuration operation.
  • the incoming handover request signaling, and the target is a cell that is undergoing splitting or merging, then the base station establishes a context for the UE,
  • the RRC reconstruction information sent by the neighboring base station is saved.
  • the base station may not allocate the radio service bearer resource for the UE, and then return The handover preparation failure response; or, the base station allocates the requested radio service bearer resource to the UE, and then returns the handover preparation Successful response.
  • the neighboring base station receives the failure response, and does not A switch to the changed cell will be triggered.
  • RLF occurs when the link quality of the UE in the original serving cell deteriorates to a certain extent. (Radio Link Fail, radio link failure), then select the newly generated cell after splitting or the combined cell attempts RRC Connection reestablishment, because the base station already has corresponding reconstruction information, the RRC reconstruction can be successful. If cell splitting Or the combined base station returns a handover preparation success response, and the neighbor base station sends a handover command to the UE after receiving the response, and the UE attempts to connect.
  • the UE cannot access the switch and the switch fails. After the UE selects the split, the newly generated cell or the merged cell attempts RRC connection reestablishment, because the base station already has a corresponding The reconstruction information can make the RRC reconstruction successful.
  • the user equipment switching method when the base station configuration is changed include:
  • Step S301 The base station determines that cell splitting or merging needs to be performed.
  • Step S302 The base station sends a notification message to the neighboring base station, where the notification message carries the local to be split or merged.
  • the information of the cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.
  • the neighboring base station Since the base station sends a notification message to the neighboring base station when it is required to perform cell splitting or merging, the neighboring base station is If the notification message is used for UE handover preparation, the success rate of the RRC connection reestablishment after the handover failure is improved, and the user is prevented from dropping the call. The impact of base station configuration changes on user service quality is reduced.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • the method further includes:
  • the base station Before completing the configuration of cell splitting or merging, the base station receives the handover request signaling sent by the neighboring base station, and cuts The target cell indicating that the UE handover is in the request signaling is a cell that is being split or merged;
  • the base station establishes a context for the UE, and saves RRC reconstruction information sent by the neighboring base station;
  • the embodiment of the present application further provides a user equipment switching method when the base station configuration is changed, and the method is performed by cutting
  • the changed base station performs as shown in FIG. 4, the method includes:
  • Step S401 Before the user equipment UE triggers the handover preparation, the base station that performs cell splitting or merging is sent. Notification message, the notification message carries information about the local cell to be split or merged, and a message of the cell to be generated interest;
  • Step S402 Perform handover for the UE according to the notification message.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • step S402 the UE is switched according to the notification message, which specifically includes:
  • the target cell is a cell to be split or merged as indicated in the notification message
  • the cell corresponding to the newly generated cell or the merged cell, the physical layer identifier, and the frequency point are determined.
  • the identifier of the cell, K eNB * and short MAC-I are added to the additional reconstruction information in the RRC reconstruction information, and are sent to the target base station by using the handover request message, and the target base station base station establishes a context for the UE, and saves the information sent by the neighboring base station.
  • RRC reconstruction information ;
  • the handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response. Change the order.
  • the current base station decides to split the cell by splitting the AAS and splitting the cell A. It is two cells A1 and A2 to increase the total capacity of the system.
  • the cell topology before splitting is shown in Figure 5a.
  • the topology is shown in Figure 5b.
  • the base station sends a notification message to the neighboring base station before performing the cell splitting operation.
  • the base station receives during the cell splitting process Upon the handover request and the target is the cell being split, a handover preparation failure response is returned.
  • the current base station decides to adjust the AAS mode and prepares to put the cell.
  • A splits into two cells A1 and A2 to increase the capacity of the network, wherein the cell A1's ECGI, PCI and frequency after splitting
  • the point configuration is exactly the same as that of the cell A.
  • the base station allocates or requests the OAM to allocate the ECGI and PCI for the newly generated cell A2. And frequency point;
  • the base station A Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F, It contains the ECGI of cell A and the information of cell A2 to be generated, such as ECGI, PCI and frequency.
  • the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A, it is included in the ECGI of the A2 cell.
  • the identifier (CellIdentity), the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A2 cell identifier (CellIdentity) to the RRC in the handover request message.
  • the additional reconstruction information in the reconstruction information is then transmitted to the target base station A through the handover request signaling.
  • the base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station. However, the wireless service bearer resource is not allocated, and then the handover preparation failure response is returned.
  • Base station A performs AAS antenna mode adjustment, and cell A splits into cells A1 and A2.
  • the neighboring base station receives the handover preparation failure response and does not trigger the handover to the cell A.
  • the UE As the UE moves, gradually leaves the original serving cell and enters the coverage of the newly generated cell A2, then the UE does not The RLF occurs after the quality of the line link deteriorates to a certain extent. Since the UE has moved to the range of the cell A2, the cell A2 is selected. The RRC connection re-establishment is attempted. Since the base station A already has the reconstruction information corresponding to the cell A2, the RRC connection can be made heavy. Successfully built, the UE did not drop out.
  • the base station decides to perform cell splitting by adjusting the AAS, and splits the cell A into two cells A1 and A2.
  • Split The front cell topology is shown in Figure 5a, and the split cell topology is shown in Figure 5b.
  • the base station sends a notification message to the neighboring base station before performing the cell splitting operation.
  • the base station receives during the cell splitting process When the handover request is made and the target is the cell that is being split, the normal handover preparation is performed, and the handover preparation success response is returned.
  • the current base station decides to adjust the AAS mode, ready to be small.
  • Area A is split into two cells A1 and A2 to increase the capacity of the network, and the ECGI, PCI and frequency of the cell A1 after splitting
  • the point configuration is exactly the same as that of the cell A.
  • the base station allocates or requests the OAM to allocate the ECGI and PCI for the newly generated cell A2. And frequency point;
  • the base station A Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F, It contains the ECGI of cell A and the information of cell A2 to be generated, such as ECGI, PCI and frequency.
  • the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A, it is included in the ECGI of the A2 cell.
  • the identifier (CellIdentity), the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and the identifier of the cell A2 (CellIdentity), the calculated K eNB * and short MAC-I are added to the RRC in the handover request message.
  • the additional reconstruction information in the reconstruction information is then transmitted to the target base station A through the handover request signaling.
  • the base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station. And the requested wireless service bearer resources are allocated, and then the handover preparation success response is returned.
  • Base station A performs AAS antenna mode adjustment, and cell A splits into cells A1 and A2.
  • the neighboring base station receives the handover preparation success response, and sends a handover command to the UE, where the target cell is A, and the UE performs handover. Try to access cell A, but at this time cell A has been split into cells A1 and A2, and the location of the UE is in the cell A2. The coverage range, the UE cannot access, resulting in a handover failure.
  • the UE Since the UE has moved to the range of the cell A2, after the failure, the UE selects the cell A2 to try the RRC connection reestablishment due to The base station A already has the reconstruction information corresponding to the cell A2, and the RRC connection can be successfully reconstructed, and the UE does not drop the call.
  • the system does not need too high capacity, and in order to reduce the mobility overhead of the system, when The former base station decides to perform cell merging by adjusting the AAS, and combines the two cells A1 and A2 into the cell A.
  • the cell topology is shown in Figure 5b, and the merged cell topology is shown in Figure 5a.
  • the base station decides to adjust the AAS mode, and combines two cells A1 and A2 into cell A, where after combining
  • the ECGI, PCI, and frequency point configuration of the cell A is exactly the same as that of the cell A1, and the cell A2 will completely disappear after the combination;
  • the base station A Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F, It contains the information of the cell A1 that still exists after the combination, such as ECGI, PCI and frequency, and the small disappearance after the merge. ECGI of District A2.
  • the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A2 that is about to disappear, the ECGI according to the cell A1.
  • the identifier (CellIdentity) included in the cell, the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A1 cell to the handover request message.
  • the additional reconstruction information in the RRC reconstruction information is then transmitted to the target base station A through the handover request signaling.
  • the base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station. However, the wireless service bearer resource is not allocated, and then the handover preparation failure response is returned.
  • Base station A performs AAS antenna mode adjustment, and cells A1 and A2 are combined into one cell A.
  • the neighboring base station receives the handover preparation failure response and does not trigger the handover to the cell A2.
  • the UE moves, gradually leaves the original serving cell and enters the coverage of the merged cell A, then the UE does not The RLF occurs after the quality of the line link deteriorates to a certain extent. Since the UE has moved to the range of the cell A, the cell A is selected to try. RRC connection reestablishment, since the base station A already has the reconstruction information corresponding to the cell A (ie, the pre-merger A1), the RRC can be made. The connection is successfully reestablished and the UE has not dropped.
  • the base station decides to perform cell merging by adjusting the AAS, and combines the two cells A1 and A2 into the cell A. merge
  • the pre-cell topology is shown in Figure 5b
  • the merged cell topology is shown in Figure 5a.
  • the base The station sends a notification message to the neighboring base station.
  • the base station decides to adjust the AAS mode, and combines two cells A1 and A2 into cell A, where after combining
  • the ECGI, PCI, and frequency point configuration of the cell A is exactly the same as that of the cell A1, and the cell A2 will completely disappear after the combination;
  • the base station A Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F, It contains the information of the cell A1 that still exists after the combination, such as ECGI, PCI and frequency, and the small disappearance after the merge. ECGI of District A2.
  • the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A2 that is about to disappear, the ECGI according to the cell A1.
  • the identifier (CellIdentity) included in the cell, the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A1 cell to the handover request message.
  • the additional reconstruction information in the RRC reconstruction information is then transmitted to the target base station A through the handover request signaling.
  • the base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station.
  • the requested wireless service bearers the resource and then returns a handover ready success response.
  • Base station A performs AAS antenna mode adjustment, and cells A1 and A2 are combined into one cell A.
  • the neighboring base station receives the handover preparation success response, and sends a handover command to the UE, where the target cell is A2, and the UE performs handover. Attempt to access cell A2, but cell A2 has disappeared, and the UE cannot access, resulting in handover failure.
  • the cell A Since the UE has moved to the range of the cell A, the cell A is selected to try the RRC connection reestablishment, since the base station A already has The reconstruction information corresponding to the cell A (that is, the pre-merger A1) can successfully re-establish the RRC connection, and the UE does not drop the call.
  • the embodiment of the present application further provides a user equipment switching device when the base station configuration is changed, and the device is specifically implemented.
  • the base station splitting or merging the base station as shown in FIG. 6a, the device includes:
  • a determining unit 601 configured to determine that cell splitting or merging needs to be performed
  • the sending unit 602 is configured to send a notification message to the neighboring base station, where the notification message carries a split or merge
  • the information of the local cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • the method further includes:
  • the handover preparation unit 603 is configured to receive the sending by the neighboring base station before completing the configuration of cell splitting or merging.
  • Handling request signaling, and the target cell indicating handover of the UE in the handover request signaling is a cell that is being split or merged;
  • the embodiment of the present application further provides a user equipment switching apparatus when the base station configuration is changed, where the apparatus is specifically The base station that the UE performs handover, as shown in FIG. 7, the device includes:
  • the receiving unit 701 is configured to receive the performing cell splitting or merging before the user equipment UE triggers the handover preparation.
  • a notification message sent by the base station, the notification message carries information about the local cell to be split or merged, and the information to be generated Cell information;
  • the switching unit 702 is configured to perform handover for the UE according to the notification message.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • the switching unit 702 is specifically configured to:
  • the target cell is a cell to be split or merged as indicated in the notification message
  • the target base station base station In the information, and sent to the target base station by using the handover request message, the target base station base station establishes a context for the UE, and saves RRC reconstruction information sent by neighboring base stations;
  • the handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response. Change the order.
  • the base station that performs cell splitting or merging and the base station that triggers handover preparation for the user equipment UE are the same scenario.
  • Two base stations under, but one base station can have both a base station performing cell splitting or merging and a user equipment UE The function of the base station that triggers the handover preparation.
  • the embodiment of the present application further provides a user equipment switching system when the base station configuration is changed, as shown in FIG. include:
  • the neighboring base station performs UE handover according to the notification message.
  • the base station 802 that performs handover for the user equipment UE is configured to receive the handover before the user equipment UE triggers the handover preparation.
  • the embodiment of the present application further provides a user equipment switching system when the base station configuration is changed, as shown in FIG. include:
  • the processor 900 is configured to determine that cell splitting or merging needs to be performed; sending, by the transceiver 910, to the neighboring base station Knowing the message, the notification message carries information about the local cell to be split or merged, and information about the cell to be generated, Performing UE handover by the neighboring base station according to the notification message;
  • the transceiver 910 is configured to receive and transmit data under the control of the processor 900.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • the processor 900 is configured to receive a handover sent by a neighboring base station before completing the configuration of cell splitting or merging. Obtaining signaling, and the target cell indicating handover of the UE in the handover request signaling is a cell that is being split or merged;
  • the bus architecture may include any number of interconnected buses and bridges, specifically by the processor 900.
  • the various circuits of the memory represented by one or more processors and memory 920 are linked together.
  • Bus architecture Various other circuits such as peripherals, voltage regulators, and power management circuits can be linked together. It is well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 910 It can be a plurality of components, including a transmitter and a receiver, provided for communicating with various other devices on a transmission medium. unit.
  • the processor 900 is responsible for managing the bus architecture and the usual processing, and the memory 920 can store the processor 900 for execution. The data used in the row operation.
  • the processor 900 is responsible for managing the bus architecture and the usual processing, and the memory 920 can store the processor 900 for execution. The data used during the operation.
  • the embodiment of the present application further provides a user equipment switching apparatus when the base station configuration is changed, where the apparatus is specifically The base station that the UE performs handover, as shown in FIG. 10, the device includes:
  • the processor 1000 is configured to receive the performing cell splitting or the transceiver 1010 before the UE triggers the handover preparation.
  • a notification message sent by the merged base station the notification message carries information about the local cell to be split or merged, and Information of the generated cell; switching for the UE according to the notification message;
  • the transceiver 1010 is configured to receive and transmit data under the control of the processor 1000.
  • the information of the cell specifically includes:
  • the physical layer identifier of the cell
  • the downlink carrier frequency of the cell is the downlink carrier frequency of the cell
  • the global identity of the cell is the global identity of the cell.
  • the processor 1000 is specifically configured to:
  • the target cell is a cell to be split or merged as indicated in the notification message
  • the target base station base station In the information, and sent to the target base station by using the handover request message, the target base station base station establishes a context for the UE, and saves RRC reconstruction information sent by neighboring base stations;
  • the handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response. Change the order.
  • the base station that performs cell splitting or merging and the base station that triggers handover preparation for the user equipment UE are the same scenario.
  • Two base stations under, but one base station can have both a base station performing cell splitting or merging and a user equipment UE The function of the base station that triggers the handover preparation.
  • the bus architecture may include any number of interconnected buses and bridges, specifically by the processor 1000.
  • One or more processors represented and various circuits of the memory represented by memory 1020 are linked together.
  • Bus architecture It is also possible to link various other circuits such as peripherals, voltage regulators, and power management circuits. They are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1010 may be a plurality of components, including a transmitter and a receiver, provided for communicating with various other devices on a transmission medium The unit of the letter.
  • the processor 1000 is responsible for managing the bus architecture and the usual processing, and the memory 1020 can store the processor 1000. The data used when performing the operation.
  • the processor 1000 is responsible for managing the bus architecture and the usual processing, and the memory 1020 can store the processor 1000 at The data used to perform the operation.
  • the embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information. Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.
  • embodiments of the present application can be provided as a method, system, or computer program.
  • Product. Therefore, the present application may employ an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. The form of the case.
  • the application may employ one or more computers having computer usable program code embodied therein.
  • Computer program implemented on a storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) The form of the product.
  • the present application is a flowchart of a method, device (system), and computer program product according to an embodiment of the present application. And / or block diagram to describe. It should be understood that each flow in the flowchart and/or block diagram can be implemented by computer program instructions. Combinations of blocks and/or blocks, and flow diagrams and/or blocks in the flowcharts and/or block diagrams.
  • These computers are available Program instructions to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device Generating a machine to generate instructions for execution by a processor of a computer or other programmable data processing device To implement the functions specified in one or more blocks of a flow or a flow and/or block diagram of a flowchart Device.
  • These computer program instructions can also be stored in a particular computer capable of booting a computer or other programmable data processing device In a computer readable memory that operates such that instructions generated in the computer readable memory are generated including instructions
  • the instruction device is implemented in a flow or a flow or a block diagram of a block or a plurality of blocks The function specified in the box.

Abstract

This application relates to communications technologies, and disclosed are a method, device, and system for handing over a user equipment (UE) during a change of a configuration of a base station. When a base station determines that cell split or combination needs to be performed, the base station sends a notification message to a neighboring base station, the notification message carrying information of a local cell that needs to be split or combined and information of a cell to be generated, and the neighboring base station performs UE handover preparation according to the notification message. Because handover request signaling comprises RRC reestablishment information of a cell to be generated or a cell after combination, a base station in which cell split or combination occurs can successfully reestablish an RRC connection according to these pieces of information, so that a call drop of a user is avoided, and an influence of a change of a configuration of the base station on the quality of service of the user is reduced.

Description

一种基站配置变更时的用户设备切换方法、装置及系统User equipment switching method, device and system when base station configuration is changed
本申请要求在2013年04月01日提交中国专利局、申请号为201310111468.3、申请名 称为“一种基站配置变更时的用户设备切换方法、装置及系统”的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 This application is required to be submitted to the China Patent Office on April 1, 2013, and the application number is 201310111468.3.           Priority of a Chinese patent application referred to as "a user equipment switching method, apparatus and system when a base station configuration is changed",           The entire contents of this application are incorporated herein by reference.                 
技术领域 Technical field                 
本申请涉及通信技术，尤其涉及一种基站配置变更时的用户设备切换方法、装置及系 统。 The present application relates to communication technologies, and in particular, to a user equipment switching method, apparatus, and system when a base station configuration is changed.           System.                 
背景技术 Background technique                 
在移动通信系统中，随着AAS(Active Antenna System，有源天线)技术的引入，网络 可以基于实际的负荷状况，通过动态的小区分裂或合并来提高或降低系统容量，达到随需 而变的目的。但是，动态的小区分裂或合并意味着网络拓扑的改变，这会增加切换失败概 率，降低网络移动性性能。 In the mobile communication system, with the introduction of AAS (Active Antenna System) technology, the network           Increase or decrease system capacity through dynamic cell splitting or merging based on actual load conditions to achieve on-demand           And the purpose of change. However, dynamic cell splitting or merging means a change in the network topology, which will increase the handover failure.           Rate, reduce network mobility performance.                 
具体的，AAS通常被设计成包含有限数量的多个不同的波瓣宽度。AAS可以控制下 倾角和波瓣宽度使之具有一个更好的解析度，并且在某些特定的场景中波束和下倾角可以 根据用户的业务模式而进行调整，从而使得整个网络性能最大化。下倾角和波束宽度控制 的概念可以被扩展到如小区分裂等技术中。在有源天线系统中通过调整模式使得小区在水 平或者垂直方向进行分裂从而产生小区分裂的效果。 In particular, AAS is typically designed to contain a limited number of different lobe widths. AAS can be controlled           The tilt and lobe widths give it a better resolution, and in certain scenes the beam and downtilt can           Adjust based on the user's business model to maximize overall network performance. Downtilt and beamwidth control           The concept can be extended to technologies such as cell splitting. Adjusting the mode in the active antenna system makes the cell in the water           Splitting in a flat or vertical direction produces an effect of cell splitting.                 
该功能的主要特点是在垂直面或者水平面将一个小区分裂成两个小区，两个同频小区 可以具有不同的倾角、波束形状以及覆盖半径，但是具有相同的频率，从而提高了资源的 利用率。该功能主要适用于一些频率有限且具有高容量需求的区域，如高层写字楼、街道 等覆盖场景。由于复用了原有的时频资源，尽管存在一些干扰和切换的损失，但是仍然可 以有效地提升小区的容量，并且如果分裂后的两个小区的发射功率都与分裂前小区的发射 功率相同的情况下，对于外小区的覆盖效果也有一定的提升。图1给出了有源天线进行垂 直分裂成两小区时拓扑结构。 The main feature of this function is to split a cell into two cells in the vertical or horizontal plane, two co-frequency cells.           Can have different tilt angles, beam shapes, and coverage radii, but with the same frequency, which increases resources           Utilization rate. This function is mainly suitable for some areas with limited frequency and high capacity requirements, such as high-rise office buildings and streets.           Etc. Cover the scene. Due to the reuse of the original time-frequency resources, although there are some losses of interference and handover, it is still           To effectively increase the capacity of the cell, and if the transmitted power of both cells after splitting is transmitted with the cell before the splitting           When the power is the same, the coverage effect on the outer cell is also improved. Figure 1 shows the active antenna hanging           The topology is split into two cells.                 
在E-UTRAN（Evolved Universal Terrestrial Radio Access Network，演进的通用陆基无线接入网） 系统标准规范中，在X2接口定义了切换准备过程，如图2a和图2b所示，当服务基站为 某个UE（用户设备）触发X2切换准备时，服务基站要通过X2接口向目标小区所在基站 发送切换请求（HANDOVER REQUEST）消息，目标基站收到切换请求后，为UE建立上 下文，根据请求的UE无线接入承载的QoS（Quality of Service，业务质量）值分配资源， 并把UE相关的配置信息保存到UE上下文中。若资源分配成功，则返回切换请求确认 (HANDOVER REQUEST ACKNOWLEDGE)消息；若资源分配失败，则返回切换准备失败 (HANDOVER PREPARATION FAILURE)消息。 E-UTRAN (Evolved Universal Terrestrial Radio Access Network, Evolved Universal Terrestrial Radio Access Network)           In the system standard specification, the handover preparation process is defined on the X2 interface, as shown in Figure 2a and Figure 2b, when the serving base station is           When a certain UE (User Equipment) triggers X2 handover preparation, the serving base station needs to go to the base station where the target cell is located through the X2 interface.           Sending a handover request (HANDOVER REQUEST) message, after the target base station receives the handover request, it establishes for the UE           Hereinafter, resources are allocated according to the QoS (Quality of Service) value of the requested UE radio access bearer,                               The UE related configuration information is saved in the UE context. If the resource allocation is successful, return the switch request confirmation.           (HANDOVER REQUEST ACKNOWLEDGE) message; if the resource allocation fails, returning the switch preparation failure           (HANDOVER PREPARATION FAILURE) message.                 
在E-UTRAN系统标准规范中，在进行切换准备时，源eNB（演进基站）向目标eNB 发送的切换请求信令中携带UE的上下文信息，其中包含了用于UE RRC重建的信息，具 体实现时，可以通过如下方式实现： In the E-UTRAN system standard specification, the source eNB (Evolved Base Station) is directed to the target eNB when preparing for handover.           The transmitted handover request signaling carries the context information of the UE, and includes information for UE RRC reestablishment,           When the body is implemented, it can be implemented as follows:                 
切换准备信息（HandoverPreparationInformation），该消息用于传送目标基站在切换准 备时使用的E-UTRA RRC信息，包括UE能力信息。 Handover Preparation Information (HandoverPreparationInformation), which is used to transmit the target base station in the handover           E-UTRA RRC information used in standby, including UE capability information.                 
从源基站/源接入网到目标基站： From the source base station/source access network to the target base station:                 
Figure PCTCN2014074386-appb-000001
Figure PCTCN2014074386-appb-000001
AS-Context（AS上下文），这个信息用于传送目标基站所需的本地E-UTRAN上下文。 AS-Context (AS Context), this information is used to convey the local E-UTRAN context required by the target base station.                                     
Figure PCTCN2014074386-appb-000002
Figure PCTCN2014074386-appb-000002
Figure PCTCN2014074386-appb-000003
Figure PCTCN2014074386-appb-000003
包含一组目标基站控制的小区对应的shortMAC-I和K eNB*，它们是UE在这些小区成 功重建时所需要的信息。 A short MAC-I and K eNB * corresponding to a group of cells controlled by the target base station, which are information required by the UE when these cells are successfully reconstructed.
Key-eNodeB-Star Key-eNodeB-Star                 
Parameter K eNB*:See TS33.401[32,7.2.8.4].This parameter is only used for X2handover, and for S1handover,it shall be ignored by target eNB. Parameter K eNB* : See TS33.401 [32, 7.2.8.4]. This parameter is only used for X2handover, and for S1handover, it shall be ignored by target eNB.
sourcePhyCellId sourcePhyCellId                 
The physical cell identity of the source PCell,used to determine the UE context in the target  eNB at re-establishment. The physical cell identity of the source PCell, used to determine the UE context in the target           eNB at re-establishment.                 
targetCellShortMAC-I targetCellShortMAC-I                 
The ShortMAC-I for the handover target PCell,in order for potential re-establishment to  succeed. The ShortMAC-I for the handover target PCell, in order for potential re-establishment to           Succeed                 
在用于RRC（Radio Resource Control，无线资源控制）重建的信息（ReestablishmentInfo） 中，除了包含目标小区的信息，还可以包含属于目标基站的其它小区的信息 （additionalReestabInfoList），这个信息的用途是，一旦UE切换失败，并选择了目标基站 的非目标小区的其它小区尝试RRC连接重建，可以保证RRC连接重建成功，这样可以防 止UE因切换失败而掉话，对用户业务的影响降低到最小。 Information for RRC (Radio Resource Control) reconstruction (ReestablishmentInfo)           In addition to the information including the target cell, information about other cells belonging to the target base station may also be included.           (additionalReestabInfoList), the purpose of this information is, once the UE fails to switch, and selects the target base station           The other cells of the non-target cell try to re-establish the RRC connection, which can ensure the successful completion of the RRC connection reestablishment.           The UE loses the call due to the handover failure, and the impact on the user service is minimized.                 
可见，当基站使用AAS技术进行小区分裂或合并后，网络的拓扑改变了，即该区域 内小区间的相邻关系发生了变化，这必然影响到UE的切换，降低网络的切换性能。例如， 在小区分裂之前，邻基站对一个UE触发了向目标小区的切换，UE在尝试接入目标时，目 标小区已经分裂了，UE所在位置是由该目标小区分裂后出现的新小区覆盖，由于切换命 令中包含的是原目标小区的信息，UE不能识别新小区，结果无法接入到新小区，导致切 换失败。切换失败后，由于新小区的信号最强，UE选择这个新小区尝试RRC连接重建， 由于基站没有该新小区的重建信息，RRC连接重建失败，UE进入IDLE（空闲）态，导致 掉话，对用户的服务造成较差的影响。 It can be seen that when the base station uses AAS technology to perform cell splitting or merging, the topology of the network changes, that is, the area           The neighbor relationship between the inner cells changes, which inevitably affects the handover of the UE and reduces the handover performance of the network. E.g,           Before the cell splits, the neighboring base station triggers handover to the target cell for one UE, and when the UE attempts to access the target,           The target cell has been split, and the location of the UE is covered by the new cell that appears after the target cell is split, due to the switching life.           The command contains the information of the original target cell, and the UE cannot identify the new cell, and the result cannot access the new cell, resulting in cutting.           Change failed. After the handover fails, the UE selects the new cell to try the RRC connection reestablishment because the signal of the new cell is the strongest.           Since the base station does not have the reconstruction information of the new cell, the RRC connection reestablishment fails, and the UE enters the IDLE state, resulting in           Dropping words has a negative impact on the user's service.                 
发明内容 Summary of the invention                 
本申请实施例提供一种基站配置变更时的用户设备切换方法、装置及系统，以减小基 站配置变更对用户服务质量的影响。 The embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, to reduce a base.           The impact of station configuration changes on user service quality.                                     
一种基站配置变更时的用户设备切换方法，包括： A user equipment switching method when a base station configuration is changed, including:                 
基站确定需要执行小区分裂或合并； The base station determines that cell splitting or merging needs to be performed;                 
基站向相邻基站发送通知消息，所述通知消息中携带要发生分裂或合并的本地小区的 信息以及要生成的小区的信息，由相邻基站根据所述通知消息进行UE切换。 The base station sends a notification message to the neighboring base station, where the notification message carries the local cell to be split or merged.           The information and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                 
一种基站配置变更时的用户设备切换方法，包括： A user equipment switching method when a base station configuration is changed, including:                 
为用户设备UE触发切换准备前，接收到执行小区分裂或合并的基站发送的通知消息， 所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信息； Before receiving the handover preparation for the user equipment UE, receiving a notification message sent by the base station performing cell splitting or merging,           The notification message carries information about a local cell to be split or merged and information of a cell to be generated;                 
根据所述通知消息为所述UE进行切换。 Switching is performed for the UE according to the notification message.                 
一种基站配置变更时的用户设备切换装置，包括： A user equipment switching device when a base station configuration is changed includes:                 
确定单元，用于确定需要执行小区分裂或合并； a determining unit, configured to determine that a cell split or merge needs to be performed;                 
发送单元，用于向相邻基站发送通知消息，所述通知消息中携带要发生分裂或合并的 本地小区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息进行UE切换。 a sending unit, configured to send a notification message to the neighboring base station, where the notification message carries a split or merge           The information of the local cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                 
一种基站配置变更时的用户设备切换装置，包括： A user equipment switching device when a base station configuration is changed includes:                 
接收单元，用于为用户设备UE触发切换准备前，接收到执行小区分裂或合并的基站 发送的通知消息，所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的 小区的信息； a receiving unit, configured to receive a base station performing cell splitting or merging before triggering handover preparation for the user equipment UE           a notification message sent, the notification message carrying information of a local cell to be split or merged, and a message to be generated           Cell information;                 
切换单元，用于根据所述通知消息为所述UE进行切换。 And a switching unit, configured to perform handover for the UE according to the notification message.                 
一种基站配置变更时的用户设备切换系统，包括： A user equipment switching system when a base station configuration is changed, including:                 
执行小区分裂或合并的基站，用于确定需要执行小区分裂或合并；向相邻基站发送通 知消息，所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信 息，由相邻基站根据所述通知消息进行UE切换。 Performing cell splitting or merging of the base station for determining that cell splitting or merging needs to be performed; transmitting to the neighboring base station           Knowing that the notification message carries information about a local cell to be split or merged and a message of a cell to be generated           The neighboring base station performs UE handover according to the notification message.                 
为用户设备UE进行切换的基站，用于为用户设备UE触发切换准备前，接收到执行 小区分裂或合并的基站发送的通知消息；根据所述通知消息为所述UE进行切换。 The base station that performs handover for the user equipment UE is configured to receive the execution before triggering the handover of the user equipment UE.           a notification message sent by the base station that is split or merged by the cell; and the UE is switched according to the notification message.                 
本申请实施例提供一种基站配置变更时的用户设备切换方法、装置及系统，在基站确 定需要执行小区分裂或合并时，基站向相邻基站发送通知消息，所述通知消息中携带要发 生分裂或合并的本地小区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息 进行UE切换准备，由于切换请求信令中包含了要生成的小区或合并后小区的RRC重建信 息，所以一旦发生切换失败，发生小区分裂或合并的基站可以根据这些信息成功进行RRC 连接重建，避免了用户掉话，减小了基站配置变更对用户服务质量的影响。 The embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does           When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries           Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station           Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell           Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information.           Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.                 
附图说明 DRAWINGS                                     
图1为背景技术中垂直多扇区分裂的拓扑图； 1 is a topological diagram of vertical multi-sector splitting in the background art;                 
图2a为背景技术中切换准备成功流程图； 2a is a flowchart of successful handover preparation in the background art;                 
图2b为背景技术中切换准备失败流程图； 2b is a flowchart of handover preparation failure in the background art;                 
图3为本申请实施例提供的基站配置变更时的用户设备切换方法流程图之一； FIG. 3 is a flowchart of a user equipment switching method when a base station configuration is changed according to an embodiment of the present disclosure;                 
图4为本申请实施例提供的基站配置变更时的用户设备切换方法流程图之二； 4 is a second flowchart of a user equipment switching method when a base station configuration is changed according to an embodiment of the present disclosure;                 
图5a为本申请实施例提供的实施例应用场景中分裂前或合并后的小区拓扑示意图； FIG. 5 is a schematic diagram of a cell topology before or after a split in an application scenario according to an embodiment of the present disclosure;                 
图5b为本申请实施例提供的实施例应用场景中分裂后或合并前的小区拓扑示意图； FIG. 5b is a schematic diagram of a cell topology after splitting or before merging in an application scenario according to an embodiment of the present disclosure;                 
图6a为本申请实施例提供的基站配置变更时的用户设备切换装置结构示意图之一； FIG. 6 is a schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure;                 
图6b为本申请实施例提供的一种较佳的基站配置变更时的用户设备切换装置结构示 意图； FIG. 6b is a schematic structural diagram of a user equipment switching apparatus when a preferred base station configuration is changed according to an embodiment of the present disclosure.           intention;                 
图7为本申请实施例提供的基站配置变更时的用户设备切换装置结构示意图之二； FIG. 7 is a second schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure;                 
图8为本申请实施例提供的基站配置变更时的用户设备切换系统结构示意图； FIG. 8 is a schematic structural diagram of a user equipment switching system when a base station configuration is changed according to an embodiment of the present disclosure;                 
图9为本申请实施例提供的基站配置变更时的用户设备切换装置结构示意图之三； FIG. 9 is a third schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure;                 
图10为本申请实施例提供的基站配置变更时的用户设备切换装置结构示意图之四。 FIG. 10 is a fourth schematic structural diagram of a user equipment switching apparatus when a base station configuration is changed according to an embodiment of the present disclosure.                 
具体实施方式 detailed description                 
本申请实施例提供一种基站配置变更时的用户设备切换方法、装置及系统，在基站确 定需要执行小区分裂或合并时，基站向相邻基站发送通知消息，所述通知消息中携带要发 生分裂或合并的本地小区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息 进行UE切换准备，由于切换请求信令中包含了要生成的小区或合并后小区的RRC重建信 息，所以一旦发生切换失败，发生小区分裂或合并的基站可以根据这些信息成功进行RRC 连接重建，避免了用户掉话，减小了基站配置变更对用户服务质量的影响。 The embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does           When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries           Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station           Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell           Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information.           Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.                 
为了减少小区分裂或合并导致的切换失败，以及提高切换失败后RRC连接重建的成 功率，基站在执行小区分裂或合并操作之前，通过基站间接口向周围相邻基站发送通知消 息(例如，该通知消息可以为“基站配置更新准备eNB Configuration Update Prepare”)，通 知消息中包含了要发生分裂或合并的本地小区的信息以及将要生成的小区的信息，所述小 区的信息，包括但不限于以下信息： In order to reduce the handover failure caused by cell splitting or merging, and to improve the RRC connection reestablishment after the handover failure           Power, the base station sends a notification to the neighboring neighboring base stations through the inter-base station interface before performing the cell splitting or combining operation.           Interest (for example, the notification message may be "Base Station Configuration Update Preparation eNB Configuration Update Prepare"),           The information message includes information about a local cell to be split or merged, and information about a cell to be generated, the small           District information, including but not limited to the following information:                 
小区的PCI（物理层标识）； Cell PCI (physical layer identification);                 
小区的EARFCN（下行载频）； The EARFCN of the cell (downlink carrier frequency);                 
小区的E-CGI（全局标识）。 E-CGI (global identifier) of the cell.                 
邻基站收到该通知消息后，在为UE触发切换准备，且目标小区是该通知消息中指示 的正准备分裂或合并的小区时，则根据分裂后新生成小区或合并后的小区的标识 (CellIdentity)、PCI和EARFCN计算该小区对应的密钥（K eNB*）及shortMAC-I（Short  message authentication code used for data integrity of signalling messages，用于信令消息数据 完整性的短消息认证码），并将小区的标识、计算得到的K eNB*及shortMAC-I数值添加到 RRC重建信息(ReestablishmentInfo)中的附加重建信息(additionalReestabInfoList)中，然后通 过切换请求消息发送到目标基站(即小区分裂或合并的基站)。 After receiving the notification message, the neighboring base station triggers the handover preparation for the UE, and the target cell is the cell that is being prepared to be split or merged in the notification message, according to the identity of the newly generated cell or the merged cell after the splitting ( CellIdentity), PCI, and EARFCN calculate a key (K eNB *) and a short message authentication code used for data integrity of signalling messages (short message authentication code for signaling message data integrity) of the cell, And adding the identifier of the cell, the calculated K eNB * and short MAC-I values to the additional reconstruction information (additionalReestabInfoList) in the RRC reconstruction information (ReestablishmentInfo), and then transmitting the message to the target base station through the handover request message (ie, cell splitting or merging) Base station).
进行小区分裂或合并的基站在完成小区分裂或合并的配置操作之前，收到相邻基站发 来的切换请求信令，且目标是正在进行分裂或合并的小区，则该基站为该UE建立上下文， 保存邻基站发来的RRC重建信息。基站可以不为该UE分配无线业务承载资源，然后返回 切换准备失败响应；或者，基站为UE分配请求的无线业务承载资源，然后返回切换准备 成功响应。 The base station performing cell splitting or merging receives the neighboring base station before completing the cell splitting or merging configuration operation.           The incoming handover request signaling, and the target is a cell that is undergoing splitting or merging, then the base station establishes a context for the UE,           The RRC reconstruction information sent by the neighboring base station is saved. The base station may not allocate the radio service bearer resource for the UE, and then return           The handover preparation failure response; or, the base station allocates the requested radio service bearer resource to the UE, and then returns the handover preparation           Successful response.                 
若进行小区分裂或合并的基站返回切换准备失败响应，则邻基站收到失败响应，就不 会触发到变更小区的切换。当UE在原服务小区的链路质量恶化到一定程度后，发生RLF （Radio Link Fail，无线链路失败），随后选择分裂后新生成小区或合并后的小区尝试RRC 连接重建，由于基站已经有了对应的重建信息，可以使RRC重建成功。若进行小区分裂 或合并的基站返回切换准备成功响应，邻基站收到响应后向UE发送切换命令，UE尝试接 入目标小区，由于目标小区跟分裂或合并的小区不相同，UE无法接入导致切换失败，随 后UE选择分裂后新生成小区或合并后的小区尝试RRC连接重建，由于基站已经有了对应 的重建信息，可以使RRC重建成功。 If the base station that performs cell splitting or merging returns a handover preparation failure response, the neighboring base station receives the failure response, and does not           A switch to the changed cell will be triggered. RLF occurs when the link quality of the UE in the original serving cell deteriorates to a certain extent.           (Radio Link Fail, radio link failure), then select the newly generated cell after splitting or the combined cell attempts RRC           Connection reestablishment, because the base station already has corresponding reconstruction information, the RRC reconstruction can be successful. If cell splitting           Or the combined base station returns a handover preparation success response, and the neighbor base station sends a handover command to the UE after receiving the response, and the UE attempts to connect.           If the target cell is different from the split or merged cell, the UE cannot access the switch and the switch fails.           After the UE selects the split, the newly generated cell or the merged cell attempts RRC connection reestablishment, because the base station already has a corresponding           The reconstruction information can make the RRC reconstruction successful.                 
具体的，如图3所示，本申请实施例提供的基站配置变更时的用户设备切换方法，包 括： Specifically, as shown in FIG. 3, the user equipment switching method when the base station configuration is changed according to the embodiment of the present application,           include:                 
步骤S301、基站确定需要执行小区分裂或合并； Step S301: The base station determines that cell splitting or merging needs to be performed.                 
步骤S302、基站向相邻基站发送通知消息，通知消息中携带要发生分裂或合并的本地 小区的信息以及要生成的小区的信息，由相邻基站根据通知消息进行UE切换。 Step S302: The base station sends a notification message to the neighboring base station, where the notification message carries the local to be split or merged.           The information of the cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                 
由于基站在需要执行小区分裂或合并时向相邻基站发送通知消息，从而由邻基站根据 通知消息进行UE切换准备，即可提高切换失败后RRC连接重建的成功率，避免用户掉话， 减小了基站配置变更对用户服务质量的影响。 Since the base station sends a notification message to the neighboring base station when it is required to perform cell splitting or merging, the neighboring base station is           If the notification message is used for UE handover preparation, the success rate of the RRC connection reestablishment after the handover failure is improved, and the user is prevented from dropping the call.           The impact of base station configuration changes on user service quality is reduced.                 
其中，小区的信息，具体包括： The information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                                     
当相邻基站下有UE要切换到当前小区中时，该方法还包括： When a UE under the neighboring base station wants to switch to the current cell, the method further includes:                 
基站在完成小区分裂或合并的配置之前，接收到相邻基站发送的切换请求信令，且切 换请求信令中指示UE切换的目标小区是正在进行分裂或合并的小区； Before completing the configuration of cell splitting or merging, the base station receives the handover request signaling sent by the neighboring base station, and cuts           The target cell indicating that the UE handover is in the request signaling is a cell that is being split or merged;                 
基站为UE建立上下文，保存相邻基站发来的RRC重建信息； The base station establishes a context for the UE, and saves RRC reconstruction information sent by the neighboring base station;                 
向发送切换请求的相邻基站发送切换准备失败响应，由发送切换请求的相邻基站取消 切换操作，或者为UE分配无线业务承载资源后向发送切换请求的相邻基站发送切换准备 成功响应，由该相邻基站根据切换准备成功响应向UE发送切换命令。 Sending a handover preparation failure response to the neighboring base station transmitting the handover request, canceled by the neighboring base station transmitting the handover request           Switching operation, or after allocating radio service bearer resources for the UE, sending handover preparation to the neighboring base station that sends the handover request           Successfully responding, the neighboring base station sends a handover command to the UE according to the handover preparation success response.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换方法，该方法由执行切 换的基站进行，如图4所示，该方法包括： The embodiment of the present application further provides a user equipment switching method when the base station configuration is changed, and the method is performed by cutting           The changed base station performs, as shown in FIG. 4, the method includes:                 
步骤S401、为用户设备UE触发切换准备前，接收到执行小区分裂或合并的基站发送 的通知消息，通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信 息； Step S401: Before the user equipment UE triggers the handover preparation, the base station that performs cell splitting or merging is sent.           Notification message, the notification message carries information about the local cell to be split or merged, and a message of the cell to be generated           interest;                 
步骤S402、根据通知消息为UE进行切换。 Step S402: Perform handover for the UE according to the notification message.                 
同样的，小区的信息，具体包括： Similarly, the information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                 
步骤S402中，根据通知消息为UE进行切换，具体包括： In step S402, the UE is switched according to the notification message, which specifically includes:                 
在为UE触发切换准备，且目标小区是通知消息中指示的要发生分裂或合并的小区时， 根据分裂后新生成小区或合并后的小区的标识、物理层标识和频点确定该小区对应的 K eNB*及shortMAC-I； When the handover is prepared for the UE, and the target cell is a cell to be split or merged as indicated in the notification message, the cell corresponding to the newly generated cell or the merged cell, the physical layer identifier, and the frequency point are determined. K eNB * and shortMAC-I;
将小区的标识、K eNB*及shortMAC-I添加到RRC重建信息中的附加重建信息中，并通 过切换请求消息发送到目标基站，由目标基站基站为UE建立上下文，保存相邻基站发来 的RRC重建信息； The identifier of the cell, K eNB * and short MAC-I are added to the additional reconstruction information in the RRC reconstruction information, and are sent to the target base station by using the handover request message, and the target base station base station establishes a context for the UE, and saves the information sent by the neighboring base station. RRC reconstruction information;
接收目标基站发送的切换准备失败响应后取消切换操作，或者接收目标基站为UE分 配无线业务承载资源后发送的切换准备成功响应，并根据切换准备成功响应向UE发送切 换命令。 Receiving the handover preparation failure response sent by the target base station, canceling the handover operation, or receiving the target base station as the UE           The handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response.           Change the order.                 
下面通过具体的实施例对基站配置变更时的用户设备切换方法进行详细说明： The following describes the user equipment switching method when the base station configuration is changed through a specific embodiment:                 
实施例一、 Embodiment 1                 
由于网络负荷比较高，当前基站决定要通过调整AAS进行小区分裂，把小区A分裂 为两个小区A1和A2，以提高系统的总容量。分裂前小区拓扑如图5a所示，分裂后小区 拓扑如图5b所示。 Due to the high network load, the current base station decides to split the cell by splitting the AAS and splitting the cell A.           It is two cells A1 and A2 to increase the total capacity of the system. The cell topology before splitting is shown in Figure 5a.                               The topology is shown in Figure 5b.                 
在进行小区分裂操作之前，基站向相邻基站发送通知消息。基站在小区分裂过程中收 到切换请求，且目标是正在分裂的小区，则返回切换准备失败响应。 The base station sends a notification message to the neighboring base station before performing the cell splitting operation. The base station receives during the cell splitting process           Upon the handover request and the target is the cell being split, a handover preparation failure response is returned.                 
具体的，由于业务负荷较重，当前基站(称为基站A)决定调整AAS模式，准备把小区 A分裂为两个小区A1和A2以提高网络的容量，其中分裂后小区A1的ECGI、PCI和频 点配置跟小区A完全相同，基站为新生成小区A2分配或请求OAM为其分配ECGI、PCI 和频点； Specifically, due to heavy traffic load, the current base station (referred to as base station A) decides to adjust the AAS mode and prepares to put the cell.           A splits into two cells A1 and A2 to increase the capacity of the network, wherein the cell A1's ECGI, PCI and frequency after splitting           The point configuration is exactly the same as that of the cell A. The base station allocates or requests the OAM to allocate the ECGI and PCI for the newly generated cell A2.           And frequency point;                 
在执行AAS模式调整之前，基站A向周围相邻基站B、C、D、E和F发送通知消息， 其中包含了小区A的ECGI和将生成的小区A2的信息，如ECGI、PCI和频点。 Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F,           It contains the ECGI of cell A and the information of cell A2 to be generated, such as ECGI, PCI and frequency.                 
邻基站(B、C、D、E、F中的任意一个)收到基站A发送的通知消息后，若其服务的 UE需要切换，且目标是小区A，则根据A2小区的ECGI中包含的标识(CellIdentity)、PCI 和频点计算该小区对应的K eNB*及shortMAC-I,并将A2小区的标识(CellIdentity)，计算 得到的K eNB*及shortMAC-I添加到切换请求消息中的RRC重建信息中的附加重建信息中， 然后通过切换请求信令发送到目标基站A。 After the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A, it is included in the ECGI of the A2 cell. The identifier (CellIdentity), the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A2 cell identifier (CellIdentity) to the RRC in the handover request message. The additional reconstruction information in the reconstruction information is then transmitted to the target base station A through the handover request signaling.
基站A收到切换请求消息，为该UE建立上下文，保存邻基站发来的RRC重建信息， 但不分配无线业务承载资源，然后返回切换准备失败响应。 The base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station.           However, the wireless service bearer resource is not allocated, and then the handover preparation failure response is returned.                 
基站A执行AAS天线模式调整，小区A分裂为小区A1和A2。 Base station A performs AAS antenna mode adjustment, and cell A splits into cells A1 and A2.                 
邻基站收到切换准备失败响应，不会触发到小区A的切换。 The neighboring base station receives the handover preparation failure response and does not trigger the handover to the cell A.                 
随着UE移动，逐渐离开原服务小区而进入到新生成小区A2的覆盖范围，则UE的无 线链路质量恶化到一定程度后发生RLF，由于UE已移到小区A2的范围，选择小区A2 尝试RRC连接重建，由于基站A已经有了小区A2对应的重建信息，可以使RRC连接重 建成功，UE没有发生掉话。 As the UE moves, gradually leaves the original serving cell and enters the coverage of the newly generated cell A2, then the UE does not           The RLF occurs after the quality of the line link deteriorates to a certain extent. Since the UE has moved to the range of the cell A2, the cell A2 is selected.           The RRC connection re-establishment is attempted. Since the base station A already has the reconstruction information corresponding to the cell A2, the RRC connection can be made heavy.           Successfully built, the UE did not drop out.                 
实施例二、 Embodiment 2                 
基站决定要通过调整AAS进行小区分裂，把小区A分裂为两个小区A1和A2。分裂 前小区拓扑如图5a所示，分裂后小区拓扑如图5b所示。 The base station decides to perform cell splitting by adjusting the AAS, and splits the cell A into two cells A1 and A2. Split           The front cell topology is shown in Figure 5a, and the split cell topology is shown in Figure 5b.                 
在进行小区分裂操作之前，基站向相邻基站发送通知消息。基站在小区分裂过程中收 到切换请求，且目标是正在分裂的小区，则进行正常的切换准备，返回切换准备成功响应。 The base station sends a notification message to the neighboring base station before performing the cell splitting operation. The base station receives during the cell splitting process           When the handover request is made and the target is the cell that is being split, the normal handover preparation is performed, and the handover preparation success response is returned.                 
具体的，由于业务负荷较重，当前基站（称为基站A）决定调整AAS模式，准备把小 区A分裂为两个小区A1和A2以提高网络的容量，其中分裂后小区A1的ECGI,PCI和频 点配置跟小区A完全相同，基站为新生成小区A2分配或请求OAM为其分配ECGI、PCI 和频点； Specifically, due to the heavy traffic load, the current base station (referred to as base station A) decides to adjust the AAS mode, ready to be small.           Area A is split into two cells A1 and A2 to increase the capacity of the network, and the ECGI, PCI and frequency of the cell A1 after splitting           The point configuration is exactly the same as that of the cell A. The base station allocates or requests the OAM to allocate the ECGI and PCI for the newly generated cell A2.           And frequency point;                                     
在执行AAS模式调整之前，基站A向周围相邻基站B、C、D、E和F发送通知消息， 其中包含了小区A的ECGI和将生成的小区A2的信息，如ECGI、PCI和频点。 Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F,           It contains the ECGI of cell A and the information of cell A2 to be generated, such as ECGI, PCI and frequency.                 
邻基站(B、C、D、E、F中的任意一个)收到基站A发送的通知消息后，若其服务的 UE需要切换，且目标是小区A，则根据A2小区的ECGI中包含的标识(CellIdentity)、PCI 和频点计算该小区对应的K eNB*及shortMAC-I,并将小区A2的标识(CellIdentity)，计算 得到的K eNB*及shortMAC-I添加到切换请求消息中的RRC重建信息中的附加重建信息中， 然后通过切换请求信令发送到目标基站A。 After the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A, it is included in the ECGI of the A2 cell. The identifier (CellIdentity), the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and the identifier of the cell A2 (CellIdentity), the calculated K eNB * and short MAC-I are added to the RRC in the handover request message. The additional reconstruction information in the reconstruction information is then transmitted to the target base station A through the handover request signaling.
基站A收到切换请求消息，为该UE建立上下文，保存邻基站发来的RRC重建信息， 并分配请求的无线业务承载资源，然后返回切换准备成功响应。 The base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station.           And the requested wireless service bearer resources are allocated, and then the handover preparation success response is returned.                 
基站A执行AAS天线模式调整，小区A分裂为小区A1和A2。 Base station A performs AAS antenna mode adjustment, and cell A splits into cells A1 and A2.                 
邻基站收到切换准备成功响应，向UE发送切换命令，目标小区是A，UE执行切换， 尝试接入小区A，但此时小区A已分裂为小区A1和A2，UE所在位置是在小区A2的覆 盖范围，UE无法接入从而导致切换失败。 The neighboring base station receives the handover preparation success response, and sends a handover command to the UE, where the target cell is A, and the UE performs handover.           Try to access cell A, but at this time cell A has been split into cells A1 and A2, and the location of the UE is in the cell A2.           The coverage range, the UE cannot access, resulting in a handover failure.                 
由于UE已移到小区A2的范围，失败后UE选择小区A2尝试RRC连接重建，由于 基站A已经有了小区A2对应的重建信息，可以使RRC连接重建成功，UE没有发生掉话。 Since the UE has moved to the range of the cell A2, after the failure, the UE selects the cell A2 to try the RRC connection reestablishment due to           The base station A already has the reconstruction information corresponding to the cell A2, and the RRC connection can be successfully reconstructed, and the UE does not drop the call.                 
实施例三、 Embodiment 3                 
由于网络负荷比较低，系统不需要太高的容量，同时为了减少系统的移动性开销，当 前基站决定要通过调整AAS进行小区合并，把两个小区A1和A2合并为小区A。合并前 小区拓扑如图5b所示，合并后小区拓扑如图5a所示。 Because the network load is relatively low, the system does not need too high capacity, and in order to reduce the mobility overhead of the system, when           The former base station decides to perform cell merging by adjusting the AAS, and combines the two cells A1 and A2 into the cell A. Before the merger           The cell topology is shown in Figure 5b, and the merged cell topology is shown in Figure 5a.                 
由于业务负荷较轻，系统不需要太高的容量，同时为了减少系统的移动性开销，当前 基站(称为基站A)决定调整AAS模式，把两个小区A1和A2合并为小区A，其中合并后 小区A的ECGI、PCI和频点配置跟小区A1完全相同，合并后小区A2将完全消失； Due to the lighter traffic, the system does not need too high capacity, and in order to reduce the mobility overhead of the system, currently           The base station (referred to as base station A) decides to adjust the AAS mode, and combines two cells A1 and A2 into cell A, where after combining           The ECGI, PCI, and frequency point configuration of the cell A is exactly the same as that of the cell A1, and the cell A2 will completely disappear after the combination;                 
在执行AAS模式调整之前，基站A向周围相邻基站B、C、D、E和F发送通知消息， 其中包含了合并后还存在的小区A1的信息，如ECGI、PCI和频点，以及合并后消失的小 区A2的ECGI。 Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F,           It contains the information of the cell A1 that still exists after the combination, such as ECGI, PCI and frequency, and the small disappearance after the merge.           ECGI of District A2.                 
邻基站(B、C、D、E、F中的任意一个)收到基站A发送的通知消息后，若其服务的 UE需要切换，且目标是即将消失的小区A2，则根据小区A1的ECGI中包含的标识 (CellIdentity)、PCI和频点计算该小区对应的K eNB*及shortMAC-I,并将A1小区的标识 (CellIdentity)，计算得到的K eNB*及shortMAC-I添加到切换请求消息中的RRC重建信息 中的附加重建信息中，然后通过切换请求信令发送到目标基站A。 After the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A2 that is about to disappear, the ECGI according to the cell A1. The identifier (CellIdentity) included in the cell, the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A1 cell to the handover request message. The additional reconstruction information in the RRC reconstruction information is then transmitted to the target base station A through the handover request signaling.
基站A收到切换请求消息，为该UE建立上下文，保存邻基站发来的RRC重建信息， 但不分配无线业务承载资源，然后返回切换准备失败响应。 The base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station.                               However, the wireless service bearer resource is not allocated, and then the handover preparation failure response is returned.                 
基站A执行AAS天线模式调整，小区A1和A2合并为一个小区A。 Base station A performs AAS antenna mode adjustment, and cells A1 and A2 are combined into one cell A.                 
邻基站收到切换准备失败响应，不会触发到小区A2的切换。 The neighboring base station receives the handover preparation failure response and does not trigger the handover to the cell A2.                 
随着UE移动，逐渐离开原服务小区而进入到合并后小区A的覆盖范围，则UE的无 线链路质量恶化到一定程度后发生RLF，由于UE已移到小区A的范围，选择小区A尝试 RRC连接重建，由于基站A已经有了小区A(即合并前A1)对应的重建信息，可以使RRC 连接重建成功，UE没有发生掉话。 As the UE moves, gradually leaves the original serving cell and enters the coverage of the merged cell A, then the UE does not           The RLF occurs after the quality of the line link deteriorates to a certain extent. Since the UE has moved to the range of the cell A, the cell A is selected to try.           RRC connection reestablishment, since the base station A already has the reconstruction information corresponding to the cell A (ie, the pre-merger A1), the RRC can be made.           The connection is successfully reestablished and the UE has not dropped.                 
实施例四、 Embodiment 4                 
基站决定要通过调整AAS进行小区合并，把两个小区A1和A2合并为小区A。合并 前小区拓扑如图5b所示，合并后小区拓扑如图5a所示。在进行小区A合并操作之前，基 站向相邻基站发送通知消息。 The base station decides to perform cell merging by adjusting the AAS, and combines the two cells A1 and A2 into the cell A. merge           The pre-cell topology is shown in Figure 5b, and the merged cell topology is shown in Figure 5a. Before performing the cell A merge operation, the base           The station sends a notification message to the neighboring base station.                 
由于业务负荷较轻，系统不需要太高的容量，同时为了减少系统的移动性开销，当前 基站(称为基站A)决定调整AAS模式，把两个小区A1和A2合并为小区A，其中合并后 小区A的ECGI、PCI和频点配置跟小区A1完全相同，合并后小区A2将完全消失； Due to the lighter traffic, the system does not need too high capacity, and in order to reduce the mobility overhead of the system, currently           The base station (referred to as base station A) decides to adjust the AAS mode, and combines two cells A1 and A2 into cell A, where after combining           The ECGI, PCI, and frequency point configuration of the cell A is exactly the same as that of the cell A1, and the cell A2 will completely disappear after the combination;                 
在执行AAS模式调整之前，基站A向周围相邻基站B、C、D、E和F发送通知消息， 其中包含了合并后还存在的小区A1的信息，如ECGI、PCI和频点，以及合并后消失的小 区A2的ECGI。 Before performing the AAS mode adjustment, the base station A sends a notification message to the neighboring neighboring base stations B, C, D, E, and F,           It contains the information of the cell A1 that still exists after the combination, such as ECGI, PCI and frequency, and the small disappearance after the merge.           ECGI of District A2.                 
邻基站(B、C、D、E、F中的任意一个)收到基站A发送的通知消息后，若其服务的 UE需要切换，且目标是即将消失的小区A2，则根据小区A1的ECGI中包含的标识 (CellIdentity)、PCI和频点计算该小区对应的K eNB*及shortMAC-I,并将A1小区的标识 (CellIdentity)，计算得到的K eNB*及shortMAC-I添加到切换请求消息中的RRC重建信息 中的附加重建信息中，然后通过切换请求信令发送到目标基站A。 After the neighboring base station (any one of B, C, D, E, and F) receives the notification message sent by the base station A, if the UE it serves needs to be handed over, and the target is the cell A2 that is about to disappear, the ECGI according to the cell A1. The identifier (CellIdentity) included in the cell, the PCI and the frequency point calculate the K eNB * and short MAC-I corresponding to the cell, and add the calculated C eNB * and short MAC-I of the A1 cell to the handover request message. The additional reconstruction information in the RRC reconstruction information is then transmitted to the target base station A through the handover request signaling.
基站A收到切换请求消息，为该UE建立上下文，保存邻基站发来的RRC重建信息， 分配请求的无线业务承载资源，然后返回切换准备成功响应。 The base station A receives the handover request message, establishes a context for the UE, and saves the RRC reconstruction information sent by the neighboring base station.           The requested wireless service bearers the resource and then returns a handover ready success response.                 
基站A执行AAS天线模式调整，小区A1和A2合并为一个小区A。 Base station A performs AAS antenna mode adjustment, and cells A1 and A2 are combined into one cell A.                 
邻基站收到切换准备成功响应，向UE发送切换命令，目标小区是A2，UE执行切换， 尝试接入小区A2，但小区A2已消失，UE无法接入从而导致切换失败。 The neighboring base station receives the handover preparation success response, and sends a handover command to the UE, where the target cell is A2, and the UE performs handover.           Attempt to access cell A2, but cell A2 has disappeared, and the UE cannot access, resulting in handover failure.                 
由于UE已移到小区A的范围，选择小区A尝试RRC连接重建，由于基站A已经有 了小区A(即合并前A1)对应的重建信息，可以使RRC连接重建成功，UE没有发生掉话。 Since the UE has moved to the range of the cell A, the cell A is selected to try the RRC connection reestablishment, since the base station A already has           The reconstruction information corresponding to the cell A (that is, the pre-merger A1) can successfully re-establish the RRC connection, and the UE does not drop the call.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换装置，该装置具体为执 行小区分裂或合并的基站，如图6a所示，该装置包括： The embodiment of the present application further provides a user equipment switching device when the base station configuration is changed, and the device is specifically implemented.           The base station splitting or merging the base station, as shown in FIG. 6a, the device includes:                                     
确定单元601，用于确定需要执行小区分裂或合并； a determining unit 601, configured to determine that cell splitting or merging needs to be performed;                 
发送单元602，用于向相邻基站发送通知消息，通知消息中携带要发生分裂或合并的 本地小区的信息以及要生成的小区的信息，由相邻基站根据通知消息进行UE切换。 The sending unit 602 is configured to send a notification message to the neighboring base station, where the notification message carries a split or merge           The information of the local cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                 
其中，小区的信息，具体包括： The information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                 
进一步，如图6b所示，还包括： Further, as shown in FIG. 6b, the method further includes:                 
切换准备单元603，用于在完成小区分裂或合并的配置之前，接收到相邻基站发送的 切换请求信令，且切换请求信令中指示UE切换的目标小区是正在进行分裂或合并的小区； The handover preparation unit 603 is configured to receive the sending by the neighboring base station before completing the configuration of cell splitting or merging.           Handling request signaling, and the target cell indicating handover of the UE in the handover request signaling is a cell that is being split or merged;                 
为UE建立上下文，保存相邻基站发来的无线链路控制RRC重建信息； Establishing a context for the UE, and storing radio link control RRC reconstruction information sent by the neighboring base station;                 
向发送切换请求的相邻基站发送切换准备失败响应，由发送切换请求的相邻基站取消 切换操作，或者为UE分配无线业务承载资源后向发送切换请求的相邻基站发送切换准备 成功响应，由该相邻基站根据切换准备成功响应向UE发送切换命令。 Sending a handover preparation failure response to the neighboring base station transmitting the handover request, canceled by the neighboring base station transmitting the handover request           Switching operation, or after allocating radio service bearer resources for the UE, sending handover preparation to the neighboring base station that sends the handover request           Successfully responding, the neighboring base station sends a handover command to the UE according to the handover preparation success response.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换装置，该装置具体是为 UE进行切换的基站，如图7所示，该装置包括： The embodiment of the present application further provides a user equipment switching apparatus when the base station configuration is changed, where the apparatus is specifically           The base station that the UE performs handover, as shown in FIG. 7, the device includes:                 
接收单元701，用于为用户设备UE触发切换准备前，接收到执行小区分裂或合并的 基站发送的通知消息，通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的 小区的信息； The receiving unit 701 is configured to receive the performing cell splitting or merging before the user equipment UE triggers the handover preparation.           A notification message sent by the base station, the notification message carries information about the local cell to be split or merged, and the information to be generated           Cell information;                 
切换单元702，用于根据通知消息为UE进行切换。 The switching unit 702 is configured to perform handover for the UE according to the notification message.                 
其中，小区的信息，具体包括： The information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                 
切换单元702具体用于： The switching unit 702 is specifically configured to:                 
在为UE触发切换准备，且目标小区是通知消息中指示的要发生分裂或合并的小区时， 根据分裂后新生成小区或合并后的小区的标识、物理层标识和频点确定该小区对应的密钥 及shortMAC-I； When triggering handover preparation for the UE, and the target cell is a cell to be split or merged as indicated in the notification message,           Determining a key corresponding to the cell according to the identity, physical layer identifier, and frequency of the newly generated cell or the merged cell after the splitting           And shortMAC-I;                 
将小区的标识、密钥及shortMAC-I添加到无线链路控制RRC重建信息中的附加重建 信息中，并通过切换请求消息发送到目标基站，由目标基站基站为UE建立上下文，保存 相邻基站发来的RRC重建信息； Adding the identity, key, and shortMAC-I of the cell to the additional reconstruction in the radio link control RRC reconstruction information           In the information, and sent to the target base station by using the handover request message, the target base station base station establishes a context for the UE, and saves           RRC reconstruction information sent by neighboring base stations;                                     
接收目标基站发送的切换准备失败响应后取消切换操作，或者接收目标基站为UE分 配无线业务承载资源后发送的切换准备成功响应，并根据切换准备成功响应向UE发送切 换命令。 Receiving the handover preparation failure response sent by the target base station, canceling the handover operation, or receiving the target base station as the UE           The handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response.           Change the order.                 
其中，执行小区分裂或合并的基站和为用户设备UE触发切换准备的基站是同一场景 下的两个基站，但是，一个基站可以同时具备执行小区分裂或合并的基站和为用户设备UE 触发切换准备的基站的功能。 The base station that performs cell splitting or merging and the base station that triggers handover preparation for the user equipment UE are the same scenario.           Two base stations under, but one base station can have both a base station performing cell splitting or merging and a user equipment UE           The function of the base station that triggers the handover preparation.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换系统，如图8所示，包 括： The embodiment of the present application further provides a user equipment switching system when the base station configuration is changed, as shown in FIG.           include:                 
执行小区分裂或合并的基站801，用于确定需要执行小区分裂或合并；向相邻基站发 送通知消息，通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信 息，由相邻基站根据通知消息进行UE切换。 Performing cell splitting or merging of the base station 801 for determining that cell splitting or merging needs to be performed; sending to the neighboring base station           Sending a notification message carrying the information of the local cell to be split or merged and the message of the cell to be generated           The neighboring base station performs UE handover according to the notification message.                 
为用户设备UE进行切换的基站802，用于为用户设备UE触发切换准备前，接收到执 行小区分裂或合并的基站发送的通知消息；根据通知消息为UE进行切换。 The base station 802 that performs handover for the user equipment UE is configured to receive the handover before the user equipment UE triggers the handover preparation.           The notification message sent by the base station that is split or merged by the cell; the UE is switched according to the notification message.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换系统，如图9所示，包 括： The embodiment of the present application further provides a user equipment switching system when the base station configuration is changed, as shown in FIG.           include:                 
处理器900，用于确定需要执行小区分裂或合并；通过收发机910向相邻基站发送通 知消息，通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信息， 由相邻基站根据通知消息进行UE切换； The processor 900 is configured to determine that cell splitting or merging needs to be performed; sending, by the transceiver 910, to the neighboring base station           Knowing the message, the notification message carries information about the local cell to be split or merged, and information about the cell to be generated,           Performing UE handover by the neighboring base station according to the notification message;                 
收发机910，用于在处理器900的控制下接收和发送数据。 The transceiver 910 is configured to receive and transmit data under the control of the processor 900.                 
其中，小区的信息，具体包括： The information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                 
处理器900，用于在完成小区分裂或合并的配置之前，接收到相邻基站发送的切换请 求信令，且切换请求信令中指示UE切换的目标小区是正在进行分裂或合并的小区； The processor 900 is configured to receive a handover sent by a neighboring base station before completing the configuration of cell splitting or merging.           Obtaining signaling, and the target cell indicating handover of the UE in the handover request signaling is a cell that is being split or merged;                 
为UE建立上下文，保存相邻基站发来的无线链路控制RRC重建信息； Establishing a context for the UE, and storing radio link control RRC reconstruction information sent by the neighboring base station;                 
向发送切换请求的相邻基站发送切换准备失败响应，由发送切换请求的相邻基站取消 切换操作，或者为UE分配无线业务承载资源后向发送切换请求的相邻基站发送切换准备 成功响应，由该相邻基站根据切换准备成功响应向UE发送切换命令。 Sending a handover preparation failure response to the neighboring base station transmitting the handover request, canceled by the neighboring base station transmitting the handover request           Switching operation, or after allocating radio service bearer resources for the UE, sending handover preparation to the neighboring base station that sends the handover request           Successfully responding, the neighboring base station sends a handover command to the UE according to the handover preparation success response.                 
其中，在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器900 代表的一个或多个处理器和存储器920代表的存储器的各种电路链接在一起。总线架构还 可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都 是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机910 可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的 单元。处理器900负责管理总线架构和通常的处理，存储器920可以存储处理器900在执 行操作时所使用的数据。 Wherein, in FIG. 9, the bus architecture may include any number of interconnected buses and bridges, specifically by the processor 900.           The various circuits of the memory represented by one or more processors and memory 920 are linked together. Bus architecture                               Various other circuits such as peripherals, voltage regulators, and power management circuits can be linked together.           It is well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 910           It can be a plurality of components, including a transmitter and a receiver, provided for communicating with various other devices on a transmission medium.           unit. The processor 900 is responsible for managing the bus architecture and the usual processing, and the memory 920 can store the processor 900 for execution.           The data used in the row operation.                 
处理器900负责管理总线架构和通常的处理，存储器920可以存储处理器900在执行 操作时所使用的数据。 The processor 900 is responsible for managing the bus architecture and the usual processing, and the memory 920 can store the processor 900 for execution.           The data used during the operation.                 
本申请实施例还相应提供一种基站配置变更时的用户设备切换装置，该装置具体是为 UE进行切换的基站，如图10所示，该装置包括： The embodiment of the present application further provides a user equipment switching apparatus when the base station configuration is changed, where the apparatus is specifically           The base station that the UE performs handover, as shown in FIG. 10, the device includes:                 
处理器1000，用于为UE触发切换准备前，通过收发机1010接收到执行小区分裂或 合并的基站发送的通知消息，通知消息中携带要发生分裂或合并的本地小区的信息以及要 生成的小区的信息；根据通知消息为UE进行切换； The processor 1000 is configured to receive the performing cell splitting or the transceiver 1010 before the UE triggers the handover preparation.           A notification message sent by the merged base station, the notification message carries information about the local cell to be split or merged, and           Information of the generated cell; switching for the UE according to the notification message;                 
收发机1010，用于在处理器1000的控制下接收和发送数据。 The transceiver 1010 is configured to receive and transmit data under the control of the processor 1000.                 
其中，小区的信息，具体包括： The information of the cell specifically includes:                 
小区的物理层标识； The physical layer identifier of the cell;                 
小区的下行载频； The downlink carrier frequency of the cell;                 
小区的全局标识。 The global identity of the cell.                 
处理器1000具体用于： The processor 1000 is specifically configured to:                 
在为UE触发切换准备，且目标小区是通知消息中指示的要发生分裂或合并的小区时， 根据分裂后新生成小区或合并后的小区的标识、物理层标识和频点确定该小区对应的密钥 及shortMAC-I； When triggering handover preparation for the UE, and the target cell is a cell to be split or merged as indicated in the notification message,           Determining a key corresponding to the cell according to the identity, physical layer identifier, and frequency of the newly generated cell or the merged cell after the splitting           And shortMAC-I;                 
将小区的标识、密钥及shortMAC-I添加到无线链路控制RRC重建信息中的附加重建 信息中，并通过切换请求消息发送到目标基站，由目标基站基站为UE建立上下文，保存 相邻基站发来的RRC重建信息； Adding the identity, key, and shortMAC-I of the cell to the additional reconstruction in the radio link control RRC reconstruction information           In the information, and sent to the target base station by using the handover request message, the target base station base station establishes a context for the UE, and saves           RRC reconstruction information sent by neighboring base stations;                 
接收目标基站发送的切换准备失败响应后取消切换操作，或者接收目标基站为UE分 配无线业务承载资源后发送的切换准备成功响应，并根据切换准备成功响应向UE发送切 换命令。 Receiving the handover preparation failure response sent by the target base station, canceling the handover operation, or receiving the target base station as the UE           The handover preparation sent after the radio service bears the resource successfully responds, and sends a cut to the UE according to the handover preparation success response.           Change the order.                 
其中，执行小区分裂或合并的基站和为用户设备UE触发切换准备的基站是同一场景 下的两个基站，但是，一个基站可以同时具备执行小区分裂或合并的基站和为用户设备UE 触发切换准备的基站的功能。 The base station that performs cell splitting or merging and the base station that triggers handover preparation for the user equipment UE are the same scenario.           Two base stations under, but one base station can have both a base station performing cell splitting or merging and a user equipment UE           The function of the base station that triggers the handover preparation.                 
其中，在图10中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器1000 代表的一个或多个处理器和存储器1020代表的存储器的各种电路链接在一起。总线架构 还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些 都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机 1010可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通 信的单元。处理器1000负责管理总线架构和通常的处理，存储器1020可以存储处理器1000 在执行操作时所使用的数据。 Wherein, in FIG. 10, the bus architecture may include any number of interconnected buses and bridges, specifically by the processor 1000.                               One or more processors represented and various circuits of the memory represented by memory 1020 are linked together. Bus architecture           It is also possible to link various other circuits such as peripherals, voltage regulators, and power management circuits.           They are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver           1010 may be a plurality of components, including a transmitter and a receiver, provided for communicating with various other devices on a transmission medium           The unit of the letter. The processor 1000 is responsible for managing the bus architecture and the usual processing, and the memory 1020 can store the processor 1000.           The data used when performing the operation.                 
处理器1000负责管理总线架构和通常的处理，存储器1020可以存储处理器1000在 执行操作时所使用的数据。 The processor 1000 is responsible for managing the bus architecture and the usual processing, and the memory 1020 can store the processor 1000 at           The data used to perform the operation.                 
本申请实施例提供一种基站配置变更时的用户设备切换方法、装置及系统，在基站确 定需要执行小区分裂或合并时，基站向相邻基站发送通知消息，所述通知消息中携带要发 生分裂或合并的本地小区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息 进行UE切换准备，由于切换请求信令中包含了要生成的小区或合并后小区的RRC重建信 息，所以一旦发生切换失败，发生小区分裂或合并的基站可以根据这些信息成功进行RRC 连接重建，避免了用户掉话，减小了基站配置变更对用户服务质量的影响。 The embodiment of the present application provides a user equipment switching method, apparatus, and system when a base station configuration is changed, where the base station does           When the cell splitting or merging needs to be performed, the base station sends a notification message to the neighboring base station, where the notification message carries           Information of the split or merged local cell and information of the cell to be generated, according to the notification message by the neighboring base station           Performing UE handover preparation, because the handover request signaling includes an RRC reconstruction signal of the cell to be generated or the merged cell           Interest, so once the handover fails, the base station that splits or merges the cell can successfully perform RRC based on the information.           Connection re-establishment avoids user dropped calls and reduces the impact of base station configuration changes on user service quality.                 
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产 品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实 施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介质（包括但不限于磁盘存储器、CD-ROM、光学存储器等）上实施的计算机程 序产品的形式。 Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program.           Product. Therefore, the present application may employ an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware.           The form of the case. Moreover, the application may employ one or more computers having computer usable program code embodied therein.           Computer program implemented on a storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.)           The form of the product.                 
本申请是参照根据本申请实施例的方法、设备（系统）、和计算机程序产品的流程图 和／或方框图来描述的。应理解可由计算机程序指令实现流程图和／或方框图中的每一流 程和／或方框、以及流程图和／或方框图中的流程和／或方框的结合。可提供这些计算机 程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和／或方框图一个方框或多个方框中指定的功能的 装置。 The present application is a flowchart of a method, device (system), and computer program product according to an embodiment of the present application.           And / or block diagram to describe. It should be understood that each flow in the flowchart and/or block diagram can be implemented by computer program instructions.           Combinations of blocks and/or blocks, and flow diagrams and/or blocks in the flowcharts and/or block diagrams. These computers are available           Program instructions to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device           Generating a machine to generate instructions for execution by a processor of a computer or other programmable data processing device           To implement the functions specified in one or more blocks of a flow or a flow and/or block diagram of a flowchart           Device.                 
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品，该指令装置实现在流程图一个流程或多个流程和／或方框图一个方框或多个 方框中指定的功能。 These computer program instructions can also be stored in a particular computer capable of booting a computer or other programmable data processing device           In a computer readable memory that operates such that instructions generated in the computer readable memory are generated including instructions           The manufacturing device, the instruction device is implemented in a flow or a flow or a block diagram of a block or a plurality of blocks           The function specified in the box.                 
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和／或方框图一个 方框或多个方框中指定的功能的步骤。 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that the computer                               Or a series of operational steps on a programmable device to produce computer-implemented processing, such as on a computer or other           The instructions executed on the programmable device are provided for implementing one flow or multiple processes and/or block diagrams in the flowchart           The steps of the function specified in the box or in multiple boxes.                 
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概 念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选 实施例以及落入本申请范围的所有变更和修改。 Although a preferred embodiment of the present application has been described, one of ordinary skill in the art will be aware of the basic inventiveness once           Additional changes and modifications may be made to these embodiments. Therefore, the appended claims are intended to be construed as including the preferred           The embodiments and all changes and modifications that fall within the scope of the application.                 
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和 范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内， 则本申请也意图包含这些改动和变型在内。 It will be obvious to those skilled in the art that various changes and modifications can be made in the present application without departing from the spirit and scope of the application.           range. Thus, if such modifications and variations of the present application are within the scope of the claims and their equivalents,           This application is also intended to cover such modifications and variations.                                     

Claims (13)

  1. 一种基站配置变更时的用户设备切换方法，其特征在于，包括： A user equipment switching method when a base station configuration is changed, which includes:                       
    基站确定需要执行小区分裂或合并； The base station determines that cell splitting or merging needs to be performed;                       
    所述基站向相邻基站发送通知消息，所述通知消息中携带要发生分裂或合并的本地小 区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息进行UE切换。 Sending, by the base station, a notification message to a neighboring base station, where the notification message carries a local small to be split or merged              The information of the area and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                       
  2. 如权利要求1所述的方法，其特征在于，所述小区的信息，具体包括： The method of claim 1, wherein the information of the cell specifically includes:                       
    小区的物理层标识； The physical layer identifier of the cell;                       
    小区的下行载频； The downlink carrier frequency of the cell;                       
    小区的全局标识。 The global identity of the cell.                       
  3. 如权利要求1所述的方法，其特征在于，还包括： The method of claim 1 further comprising:                       
    所述基站在完成小区分裂或合并的配置之前，接收到相邻基站发送的切换请求信令， 且切换请求信令中指示UE切换的目标小区是正在进行分裂或合并的小区； Receiving, by the base station, handover request signaling sent by the neighboring base station before completing the configuration of cell splitting or merging,              And the target cell indicating that the UE handover is in the handover request signaling is a cell that is being split or merged;                       
    所述基站为所述UE建立上下文，保存相邻基站发来的无线资源控制RRC重建信息； The base station establishes a context for the UE, and saves radio resource control RRC reconstruction information sent by the neighboring base station;                       
    向发送切换请求的相邻基站发送切换准备失败响应，由所述发送切换请求的相邻基站 取消切换操作，或者为所述UE分配无线业务承载资源后向发送切换请求的相邻基站发送 切换准备成功响应，由该相邻基站根据所述切换准备成功响应向所述UE发送切换命令。 Transmitting a handover preparation failure response to a neighboring base station that transmits a handover request, by the neighboring base station transmitting the handover request              Cancel the handover operation, or send the radio service bearer resource to the UE, and send it to the neighboring base station that sends the handover request.              The handover preparation succeeds in response, and the neighboring base station sends a handover command to the UE according to the handover preparation success response.                       
  4. 一种基站配置变更时的用户设备切换方法，其特征在于，包括： A user equipment switching method when a base station configuration is changed, which includes:                       
    为用户设备UE触发切换准备前，接收到执行小区分裂或合并的基站发送的通知消息， 所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信息； Before receiving the handover preparation for the user equipment UE, receiving a notification message sent by the base station performing cell splitting or merging,              The notification message carries information about a local cell to be split or merged and information of a cell to be generated;                       
    根据所述通知消息为所述UE进行切换。 Switching is performed for the UE according to the notification message.                       
  5. 如权利要求4所述的方法，其特征在于，所述小区的信息，具体包括： The method of claim 4, wherein the information of the cell specifically includes:                       
    小区的物理层标识； The physical layer identifier of the cell;                       
    小区的下行载频； The downlink carrier frequency of the cell;                       
    小区的全局标识。 The global identity of the cell.                       
  6. 如权利要求4所述的方法，其特征在于，根据所述通知消息为所述UE进行切换， 具体包括： The method according to claim 4, wherein the UE is switched according to the notification message,              Specifically include:                       
    在为UE触发切换准备，且目标小区是所述通知消息中指示的要发生分裂或合并的小 区时，根据分裂后新生成小区或合并后的小区的标识、物理层标识和频点确定该小区对应 的密钥及用于信令消息数据完整性的短消息认证码； The handover preparation is triggered for the UE, and the target cell is a small to be split or merged as indicated in the notification message.              In the time zone, the cell corresponding to the identity of the newly generated cell or the merged cell after the split, the physical layer identifier, and the frequency point are determined.              Key and short message authentication code for signaling message data integrity;                       
    将所述小区的标识、密钥及用于信令消息数据完整性的短消息认证码添加到无线资源 控制RRC重建信息中的附加重建信息中，并通过切换请求消息发送到目标基站，由所述 目标基站基站为所述UE建立上下文，保存所述RRC重建信息； Adding the identity of the cell, a key, and a short message authentication code for signaling message data integrity to the radio resource              Controlling additional reconstruction information in the RRC reconstruction information, and transmitting to the target base station by using a handover request message,                                        The target base station base station establishes a context for the UE, and saves the RRC reconstruction information;                       
    接收所述目标基站发送的切换准备失败响应后取消切换操作，或者接收所述目标基站 为所述UE分配无线业务承载资源后发送的切换准备成功响应，并根据所述切换准备成功 响应向UE发送切换命令。 Receiving a handover preparation failure response sent by the target base station, canceling the handover operation, or receiving the target base station              The handover preparation success response sent after the radio service bearer resource is allocated to the UE, and is successfully prepared according to the handover              The response sends a handover command to the UE.                       
  7. 一种基站配置变更时的用户设备切换装置，其特征在于，包括： A user equipment switching apparatus when a base station configuration is changed, comprising:                       
    确定单元，用于确定需要执行小区分裂或合并； a determining unit, configured to determine that a cell split or merge needs to be performed;                       
    发送单元，用于向相邻基站发送通知消息，所述通知消息中携带要发生分裂或合并的 本地小区的信息以及要生成的小区的信息，由相邻基站根据所述通知消息进行UE切换。 a sending unit, configured to send a notification message to the neighboring base station, where the notification message carries a split or merge              The information of the local cell and the information of the cell to be generated are switched by the neighboring base station according to the notification message.                       
  8. 如权利要求7所述的装置，其特征在于，所述小区的信息，具体包括： The device according to claim 7, wherein the information of the cell specifically includes:                       
    小区的物理层标识； The physical layer identifier of the cell;                       
    小区的下行载频； The downlink carrier frequency of the cell;                       
    小区的全局标识。 The global identity of the cell.                       
  9. 如权利要求7所述的装置，其特征在于，还包括： The device of claim 7 further comprising:                       
    切换准备单元，用于在完成小区分裂或合并的配置之前，接收到相邻基站发送的切换 请求信令，且切换请求信令中指示UE切换的目标小区是正在进行分裂或合并的小区； a handover preparation unit, configured to receive a handover sent by a neighboring base station before completing the configuration of cell splitting or merging              Requesting signaling, and the target cell indicating handover of the UE in the handover request signaling is a cell being split or merged;                       
    为所述UE建立上下文，保存相邻基站发来的无线资源控制RRC重建信息； Establishing a context for the UE, and storing radio resource control RRC reestablishment information sent by the neighboring base station;                       
    向发送切换请求的相邻基站发送切换准备失败响应，由所述发送切换请求的相邻基站 取消切换操作，或者为所述UE分配无线业务承载资源后向发送切换请求的相邻基站发送 切换准备成功响应，由该相邻基站根据所述切换准备成功响应向所述UE发送切换命令。 Transmitting a handover preparation failure response to a neighboring base station that transmits a handover request, by the neighboring base station transmitting the handover request              Cancel the handover operation, or send the radio service bearer resource to the UE, and send it to the neighboring base station that sends the handover request.              The handover preparation succeeds in response, and the neighboring base station sends a handover command to the UE according to the handover preparation success response.                       
  10. 一种基站配置变更时的用户设备切换装置，其特征在于，包括： A user equipment switching apparatus when a base station configuration is changed, comprising:                       
    接收单元，用于为用户设备UE触发切换准备前，接收到执行小区分裂或合并的基站 发送的通知消息，所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的 小区的信息； a receiving unit, configured to receive a base station performing cell splitting or merging before triggering handover preparation for the user equipment UE              a notification message sent, the notification message carrying information of a local cell to be split or merged, and a message to be generated              Cell information;                       
    切换单元，用于根据所述通知消息为所述UE进行切换。 And a switching unit, configured to perform handover for the UE according to the notification message.                       
  11. 如权利要求10所述的装置，其特征在于，所述小区的信息，具体包括： The device according to claim 10, wherein the information of the cell specifically includes:                       
    小区的物理层标识； The physical layer identifier of the cell;                       
    小区的下行载频； The downlink carrier frequency of the cell;                       
    小区的全局标识。 The global identity of the cell.                       
  12. 如权利要求10所述的装置，其特征在于，所述切换单元具体用于： The device according to claim 10, wherein the switching unit is specifically configured to:                       
    在为UE触发切换准备，且目标小区是所述通知消息中指示的要发生分裂或合并的小 区时，根据分裂后新生成小区或合并后的小区的标识、物理层标识和频点确定该小区对应 的密钥及用于信令消息数据完整性的短消息认证码； The handover preparation is triggered for the UE, and the target cell is a small to be split or merged as indicated in the notification message.              In the time zone, the cell corresponding to the identity of the newly generated cell or the merged cell after the split, the physical layer identifier, and the frequency point are determined.                                        Key and short message authentication code for signaling message data integrity;                       
    将所述小区的标识、密钥及用于信令消息数据完整性的短消息认证码添加到无线资源 控制RRC重建信息中的附加重建信息中，并通过切换请求消息发送到目标基站，由所述 目标基站基站为所述UE建立上下文，保存所述RRC重建信息； Adding the identity of the cell, a key, and a short message authentication code for signaling message data integrity to the radio resource              Controlling additional reconstruction information in the RRC reconstruction information, and transmitting to the target base station by using a handover request message,              The target base station base station establishes a context for the UE, and saves the RRC reconstruction information;                       
    接收所述目标基站发送的切换准备失败响应后取消切换操作，或者接收所述目标基站 为所述UE分配无线业务承载资源后发送的切换准备成功响应，并根据所述切换准备成功 响应向所述UE发送切换命令。 Receiving a handover preparation failure response sent by the target base station, canceling the handover operation, or receiving the target base station              The handover preparation success response sent after the radio service bearer resource is allocated to the UE, and is successfully prepared according to the handover              Sending a handover command to the UE in response.                       
  13. 一种基站配置变更时的用户设备切换系统，其特征在于，包括： A user equipment switching system when a base station configuration is changed, comprising:                       
    执行小区分裂或合并的基站，用于确定需要执行小区分裂或合并；向相邻基站发送通 知消息，所述通知消息中携带要发生分裂或合并的本地小区的信息以及要生成的小区的信 息，由相邻基站根据所述通知消息进行UE切换； Performing cell splitting or merging of the base station for determining that cell splitting or merging needs to be performed; transmitting to the neighboring base station              Knowing that the notification message carries information about a local cell to be split or merged and a message of a cell to be generated              And the neighboring base station performs UE handover according to the notification message;                       
    为用户设备UE进行切换的基站，用于为用户设备UE触发切换准备前，接收到执行 The base station that performs handover for the user equipment UE is configured to receive the execution before triggering the handover of the user equipment UE.                       
    小区分裂或合并的基站发送的通知消息；根据所述通知消息为所述UE进行切换。 a notification message sent by the base station that is split or merged by the cell; and the UE is switched according to the notification message.                                                 
PCT/CN2014/074386 2013-04-01 2014-03-31 Method, device, and system for handing over user equipment during change of configuration of base station WO2014161450A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310111468.3 2013-04-01
CN201310111468.3A CN104105145B (en) 2013-04-01 2013-04-01 Method for user device switching, apparatus and system during a kind of base station configuration change

Publications (1)

Publication Number Publication Date
WO2014161450A1 true WO2014161450A1 (en) 2014-10-09

Family

ID=51657588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/074386 WO2014161450A1 (en) 2013-04-01 2014-03-31 Method, device, and system for handing over user equipment during change of configuration of base station

Country Status (2)

Country Link
CN (1) CN104105145B (en)
WO (1) WO2014161450A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110831255A (en) * 2018-08-09 2020-02-21 电信科学技术研究院有限公司 Method, base station, mobile terminal and storage medium for reestablishing RRC connection

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106358249A (en) * 2015-07-14 2017-01-25 中兴通讯股份有限公司 Cell switching method and system
CN107113678A (en) 2015-07-31 2017-08-29 华为技术有限公司 A kind of dynamic merges minilocus approach, device, the network equipment and system
US11071131B2 (en) * 2016-01-26 2021-07-20 Ntt Docomo, Inc. Base station and transmission method
CN107027118A (en) * 2016-02-02 2017-08-08 中国移动通信集团公司 Inter-cell switch method and device, base station
CN108156609B (en) * 2016-12-02 2022-08-19 中兴通讯股份有限公司 Cell merging and splitting method, device and base station
CN108235341A (en) * 2016-12-21 2018-06-29 中兴通讯股份有限公司 The update method and device of a kind of neighboring BS relationship

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101541032A (en) * 2008-03-17 2009-09-23 中兴通讯股份有限公司 Method for notifying change of cell information
CN101877871A (en) * 2010-06-25 2010-11-03 新邮通信设备有限公司 Network self-organization method and evolution base station
CN102026265A (en) * 2009-09-09 2011-04-20 大唐移动通信设备有限公司 Method, system and device for reporting measured quantity
CN102238667A (en) * 2010-05-07 2011-11-09 北京三星通信技术研究有限公司 Inter-base station connection establishment method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101959263B (en) * 2009-07-15 2015-07-22 中兴通讯股份有限公司 Method and device for transmitting radio link failure information
CN102238541B (en) * 2010-04-29 2015-09-02 电信科学技术研究院 Key updating method and base station
CN103002526B (en) * 2011-09-13 2015-06-03 华为技术有限公司 Cell handover control methods, cell measurement method, equipment and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101541032A (en) * 2008-03-17 2009-09-23 中兴通讯股份有限公司 Method for notifying change of cell information
CN102026265A (en) * 2009-09-09 2011-04-20 大唐移动通信设备有限公司 Method, system and device for reporting measured quantity
CN102238667A (en) * 2010-05-07 2011-11-09 北京三星通信技术研究有限公司 Inter-base station connection establishment method
CN101877871A (en) * 2010-06-25 2010-11-03 新邮通信设备有限公司 Network self-organization method and evolution base station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110831255A (en) * 2018-08-09 2020-02-21 电信科学技术研究院有限公司 Method, base station, mobile terminal and storage medium for reestablishing RRC connection

Also Published As

Publication number Publication date
CN104105145A (en) 2014-10-15
CN104105145B (en) 2017-07-14

Similar Documents

Publication Publication Date Title
EP3915302B1 (en) Method for supporting access to closed network, ue, base station and readable storage medium
US10873889B2 (en) Handover apparatus and method
US11224079B2 (en) Method and apparatus for operating wireless communication system having separated mobility management and session management
CN106941733B (en) Method for realizing reconfiguration in dual connection, main service base station and auxiliary service base station
US11212714B2 (en) Method for supporting handover and corresponding base station and network node
WO2014161450A1 (en) Method, device, and system for handing over user equipment during change of configuration of base station
WO2018219039A1 (en) Management method, device, equipment and storage medium for mobile handover
RU2679537C2 (en) Method, device and system for processing rrc radio resource control message
JP6637617B2 (en) Communication method, network-side device, and user terminal
WO2017054538A1 (en) Method for establishing auxiliary signaling link, and device, base station and terminal therefor
US20160242224A1 (en) Mobile terminal communication control methods, devices and related equipment
US11323923B2 (en) Method and system for communication in wireless communication network
CN111901839A (en) Cell management method, device, equipment and storage medium
EP3461216B1 (en) Multi-connection communication method and device
US10582431B2 (en) Cellular network relocation method and base station
WO2018137666A1 (en) Data transmission method, network device and terminal device
CN113615253A (en) Conditional handover execution probability information to potential target nodes
US20210243613A1 (en) Method for managing first access network node, apparatus, generalized node-b, gnb, of 5g network, non-transitory computer-readable medium, computer program product, and data set
US20140254554A1 (en) Method and device for forwarding uplink data
WO2011100894A1 (en) Switching method and relay node
US11877327B2 (en) Method and apparatus for transmitting and receiving connection information in wireless communication system
WO2015161575A1 (en) Method, base station, mobile management entity, and system for reporting location of user terminal
US11849491B2 (en) Communication method, apparatus, and system
CN114205883B (en) Network slice remapping method, device and storage medium
CN108781376A (en) Data transmission method, user equipment and access network equipment

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14778355

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14778355

Country of ref document: EP

Kind code of ref document: A1