WO2018153344A1 - Procédé de préparation de transfert intercellulaire, station de base et équipement utilisateur - Google Patents

Procédé de préparation de transfert intercellulaire, station de base et équipement utilisateur Download PDF

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Publication number
WO2018153344A1
WO2018153344A1 PCT/CN2018/076974 CN2018076974W WO2018153344A1 WO 2018153344 A1 WO2018153344 A1 WO 2018153344A1 CN 2018076974 W CN2018076974 W CN 2018076974W WO 2018153344 A1 WO2018153344 A1 WO 2018153344A1
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WIPO (PCT)
Prior art keywords
target cell
base station
automatic handover
target
information
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PCT/CN2018/076974
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English (en)
Chinese (zh)
Inventor
孙立新
丁颖哲
周明宇
路杨
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北京佰才邦技术有限公司
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Publication of WO2018153344A1 publication Critical patent/WO2018153344A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • 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 disclosure relates to the field of communications technologies, and in particular, to a handover preparation method, a base station, and a user equipment (UE (User Equipment)).
  • UE User Equipment
  • MulteFire is a wireless access technology that extends LTE (Long Term Evolution) to unlicensed bands.
  • unlicensed band carriers can provide services independently without the aid of a licensed band carrier.
  • the MulteFire system supports automatic handover of a user terminal (UE), that is, when the UE detects that the channel quality of the current access cell and the neighboring cell meets the handover condition, the UE can automatically initiate random access to the target cell to access the target cell, without receiving The handover is performed only after the handover command of the current cell is accessed.
  • UE user terminal
  • the UE cannot know the RRC (Radio Resource Control) resource configuration of the target cell to the UE, thereby easily affecting the handover efficiency.
  • RRC Radio Resource Control
  • Embodiments of the present disclosure provide a handover preparation method, a base station, and a user terminal (UE).
  • UE user terminal
  • a handover preparation method includes: an original base station accessed by a user terminal UE transmitting, to at least one target base station, context information carrying at least the UE and target cell indication information.
  • An automatic handover preparation request where the target cell indication information is used to indicate that the at least one target base station performs radio resource control RRC resource configuration on the UE according to the target cell indication information, where context information of the UE is used to indicate
  • the at least one target base station saves context information of the UE in at least one second target cell; the original base station receives an automatic handover preparation response message sent by the at least one target base station; and if the at least one target base station sends
  • the automatic handover preparation response message includes the first target cell information that successfully accepts the UE for automatic handover, and the original base station sends automatic handover configuration information to the UE, where the automatic handover configuration information includes at least the first target The cell identity of the cell.
  • a handover preparation method includes: the target base station receiving, by the original base station accessed by the user equipment UE, at least the context information of the UE and the target cell indication information a handover preparation request; the target base station performs automatic handover admission control on the UE according to the target cell indication information, and the target base station saves the UE in at least one second target cell according to context information of the UE. Context information; and the target base station sends an automatic handover preparation response message to the original base station, where the automatic handover preparation response message includes successfully receiving the UE if the target base station successfully accepts the UE for automatic handover The first target cell information for automatic switching is performed.
  • a handover preparation method comprising: receiving, by a user equipment UE, automatic handover configuration information sent by an original base station; and if the automatic handover configuration information includes at least successfully receiving the UE And automatically selecting the cell identifier of the first target cell, and the UE selects the target cell that is automatically switched according to the automatic handover configuration information.
  • a first base station which is an original base station and includes a processor, a memory, and a bus interface, wherein the processor and the memory are connected by the bus interface, wherein The memory is configured to store programs and data stored by the processor when performing operations, and the processor is configured to read programs and data stored in the memory to control the first base station to execute according to the The method described on the one hand.
  • a second base station is further provided, the second base station is a target base station and includes a processor, a memory, and a bus interface, wherein the memory is configured to store the processor when performing an operation Stored programs and data, and the processor is operative to read programs and data stored in the memory to control the second base station to perform the method according to the second aspect.
  • a user terminal UE including a processor, a memory, and a bus interface, wherein the processor, the transceiver, and the memory are connected by the bus interface, wherein the memory And storing the program and data stored by the processor when performing an operation, and the processor is configured to read a program and data stored in the memory to control the user terminal to perform according to the third aspect method.
  • a first base station is further provided, where the first base station is an original base station, and includes: a sending module, configured to send, to at least one target base station, a user that at least carries the access to the first base station
  • the context information of the terminal UE and the automatic handover preparation request of the target cell indication information where the target cell indication information is used to indicate that the at least one target base station performs automatic handover admission control on the UE according to the target cell indication information
  • the context information of the UE is used to indicate that the at least one target base station saves context information of the UE in the at least one second target cell
  • the receiving module is configured to receive an automatic handover preparation response message sent by the at least one target base station.
  • determining configured to determine whether the automatic handover preparation response message sent by the at least one target base station includes first target cell information that successfully accepts the UE for automatic handover, wherein if the at least one target base station sends an automatic handover Preparing the response message includes successfully accepting the UE for self- First target handover cell information, the sending module sends the configuration information is automatically switched to the UE, the automatic switch configuration comprising at least cell identification information of the first target cell.
  • a second base station is further provided, where the second base station is a target base station, and includes: a receiving module, configured to receive a context that is sent by the original base station accessed by the user terminal UE and that carries at least the UE The information and the automatic handover preparation request of the target cell indication information; the configuration module is configured to perform automatic handover admission control on the UE according to the target cell indication information; and the saving module is configured to: at least one according to the context information of the UE Saving the context information of the UE in the second target cell; and the sending module is configured to send an automatic handover preparation response message to the original base station, where the automatic handover is performed if the target base station successfully accepts the UE The handover preparation response message includes first target cell information that successfully accepts the UE for automatic handover.
  • a user terminal UE includes: a receiving module, configured to receive automatic switching configuration information sent by an original base station accessed by the UE; and a determining module configured to determine the automatic switching configuration Whether the information includes the cell identifier of the first target cell that successfully accepts the UE for automatic handover; and the selecting module, configured to: in the automatic handover configuration information, the cell identifier of the first target cell that successfully accepts the UE for automatic handover In the case of the automatic switching configuration information, the target cell that is automatically switched is selected.
  • FIG. 1 is a schematic flowchart of a handover preparation method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of data transmission in a handover preparation method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of data transmission in an automatic handover process of a UE according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of data transmission in an automatic handover process of a UE according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of data transmission in an automatic handover process of a UE according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of a handover preparation method according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart of a handover preparation method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a first base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a first base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a second base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • the present disclosure provides an automatic handover preparation method, a base station, and a user equipment UE, to solve the problem that the UE cannot learn the radio resource control (RRC) resource configuration of the target cell to the UE in the related automatic handover scheme, thereby easily affecting the handover efficiency. problem.
  • RRC radio resource control
  • MulteFire (hereinafter referred to as MF) is a wireless access technology that extends Long Term Evolution (LTE) to unlicensed bands.
  • LTE Long Term Evolution
  • unlicensed band carriers can be independently serviced without the aid of a licensed band carrier.
  • the MF physical layer introduces LBT (like WiFi-based carrier sensing technology). Listen Before Talk, listen to the mechanism first.
  • the base station or the UE monitors that the unlicensed band channel is occupied, that is, when the LBT fails, the signal is stopped; when the base station or the UE monitors that the channel is idle, that is, the LBT succeeds, the signal is transmitted.
  • the DRS includes the main downlink common control signals, system broadcast, Primary Sync Signal (PSS), Secondary Sync Signal (SSS), Enhanced Primary Sync Signal (ePSS), and enhanced auxiliary.
  • Enhanced Secondary Sync Signal (eSSS) Cell Reference Signal (CRS), Master Information Block (MIB), and Enhanced System Information Block Multefire (SIB-MF).
  • the DRS occupies 12 or 14 symbols (Symbols) in one downlink subframe.
  • the UE may receive the DRS in the Discovery Signals Measurement Timing Configuration (DMTC) window for downlink synchronization, reception MIB, and SIB-MF.
  • DMTC Discovery Signals Measurement Timing Configuration
  • the MF cell transmits the CRS only in the DRS subframe or other subframes that are transmitted by the Physical Downlink Shared Channel (PDSCH). Therefore, the UE can perform channel measurement on the MF serving cell or the MF neighboring cell only in the DMTC window. Perform cell selection, cell reselection or handover.
  • PDSCH Physical Downlink Shared Channel
  • the eNB may send the DMTC information of the serving cell, the intra-frequency neighboring cell, and the inter-frequency neighboring cell to the UE, and broadcast the DMTC information of the current MF serving cell through the SIB-MF, and send the same-frequency MF neighboring cell through the SIB3 broadcast or through the UE-specific RRC message.
  • DMTC information the DMTC information of the inter-frequency MF neighboring cell of the specified frequency point is sent by the SIB5 broadcast or by the UE-specific RRC message, so that the UE learns the DRS transmission time of the MF serving cell, the intra-frequency neighboring cell, and the inter-frequency neighboring cell according to the DMTC information. Window for channel measurement.
  • the MF serving cell DMTC information includes DMTC parameters.
  • the DMTC parameters include: DMTC window duration (dmtc-duration), DMTC window period (dmtc-Periodicity), and subframe offset (dmtc-Offset).
  • MulteFire provides two basic access modes of the network architecture, namely the Public Land Mobile Network (PLMN) access mode and the Neutral Host Network (NHN) access mode.
  • PLMN Public Land Mobile Network
  • NHS Neutral Host Network
  • the NHN access mode is a unified planning and self-organizing neutral network newly introduced by MulteFire.
  • One NHN can be shared to multiple service providers at the same time, and the MF RAN is connected to the core network (CN) of the NHN, and the MF cell
  • CN core network
  • PGP-ID Participating Service Provider Identity
  • PSP-ID Participating Service Provider Identity
  • the PLMN access mode is a network mode in which the MF RAN is connected to the mobile operator's 3rd Generation Partnership Project 3GPP CN, and the UE may perform S1 or X2 handover between the MF RAN of the PLMN access mode and the 3GPP RAN, in the MF cell A list of PLMN IDs is sent in the broadcast message.
  • the MF RAN is simultaneously connected to the NHN CN and the 3GPP CN, and the NHN-ID, PSP-ID, and PLMN ID list are simultaneously broadcast in the broadcast message of the MF cell.
  • the Multefire cell monitors the channel according to the LBT mechanism. When it is occupied, it will not be able to send a switching command, resulting in a too long switching delay. Therefore, the UE automatic handover mechanism is supported in the Multefire system.
  • the UE can automatically initiate random access to the target cell without receiving the handover command of the current access cell.
  • the UE does not send a measurement report to the current cell and waits for the handover command of the current cell to reduce the handover delay.
  • the present disclosure provides a handover preparation method, which will be described in detail below in conjunction with specific embodiments.
  • the UE may be a mobile phone (or a mobile phone), or other device capable of transmitting or receiving a wireless signal, including a user equipment (terminal), a personal digital assistant (PDA), and a wireless device.
  • a wireless signal including a user equipment (terminal), a personal digital assistant (PDA), and a wireless device.
  • PDA personal digital assistant
  • Modem wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, CPE (Customer Premise Equipment) or mobile intelligent hotspot, intelligent capable of converting mobile signals into WiFi signals
  • WLL wireless local loop
  • CPE Customer Premise Equipment
  • mobile intelligent hotspot intelligent capable of converting mobile signals into WiFi signals
  • the base station is not limited in form, and may be a Macro Base Station, a Pico Base Station, a Node B (3G mobile base station), an Enhanced Base Station (ENB), and a Home Enhanced Base Station (Femto eNB). Or Home eNode B or Home eNB or HNEB), relay station, access point, RRU (Remote Radio Unit), RRH (Remote Radio Head).
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • FIG. 1 is a schematic flowchart diagram of a handover preparation method according to an embodiment of the present disclosure.
  • the executor of the handover preparation method may be the original base station accessed by the UE. As shown in FIG. 1, the method includes the following steps S101-S103.
  • Step S101 The original base station that the user terminal UE accesses sends, to the at least one target base station, an automatic handover preparation request that carries at least the context information of the UE and the target cell indication information, where the target cell indication information is used to indicate the
  • the at least one target base station performs automatic handover admission control on the UE according to the target cell indication information, where context information of the UE is used to indicate that the at least one target base station saves the context of the UE in at least one second target cell. information.
  • the original base station that the UE accesses (that is, the base station that the UE accesses before the automatic handover) sends an automatic handover preparation request to the at least one target base station, where the at least one target base station is requested to be the UE.
  • the automatic switching is ready.
  • the original base station may send the automatic handover preparation request to the at least one target base station when the UE accesses the original base station, or may reach the at least one target after receiving the measurement report reported by the UE.
  • the base station sends the automatic handover preparation request, and may also send an automatic handover preparation request to the at least one target base station every preset time after the UE accesses the original base station. It should be noted that the foregoing is only an example of the manner in which the original base station is triggered to send an automatic handover preparation request to the at least one target base station, and is not limited thereto.
  • the at least one target base station may be determined by the original base station according to the measurement report reported by the UE, for example, determining one or more cells whose signal quality is greater than a threshold according to the measurement report reported by the UE, and then determining the one or The base station corresponding to the multiple cells is the target base station.
  • the at least one target base station may also be determined by the original base station according to the mobility regularity of the UE. For example, the original base station may determine one or more that the UE is about to enter according to the mobility regularity of the UE. The cell then determines that the base station corresponding to the one or more cells is the target base station.
  • the manner of determining the at least one target base station may also be a combination of the foregoing two manners. It should be noted that the foregoing manner of determining the at least one target base station is merely an example, and the disclosure does not specifically limit this.
  • the automatic handover preparation request carries at least the context information of the UE and the target cell indication information, where the target cell indication information is used to indicate that the at least one target base station automatically performs handover and accepting the UE in the at least one target cell. control.
  • the original base station may select the same target base station or target cell or the same target base station and target cell for different UEs, or may select different target base stations or different target cells or different target base stations and target cells for different UEs. .
  • the original base station may select different target base stations or different target cells or different target base stations and target cells for different UEs according to different cells currently accessed by the UE, or may be measured according to each UE.
  • the measurement results included in the report select different target base stations or different target cells or different target base stations and target cells for each UE.
  • the original base station may first select a target cell for the UE, and then determine a base station to which the target cell belongs as a target base station.
  • the target cell indication information includes at least one or more cell identifiers of the target cell. As shown in FIG. 2, the at least one target base station automatically switches the UE in at least one target cell according to the target cell indication information. Admission control. Each of the at least one target base station may include at least one of the one or more target cells, or may not include any of the one or more target cells.
  • the target base station H when receiving the automatic handover preparation request carrying the target cell indication information, acquires a cell identifier in the target cell indication information, and then determines the at least one Whether the target cell belongs to the target base station H in the target cell, and if the target cell does not belong to the target base station H in the at least one target cell indicated by the target cell indication information (for example, in a specific implementation, the target cell indication information is not Instructing any target cell, the target base station H does not perform automatic handover admission control on the UE; if the target cell h in the at least one target cell indicated by the target cell indication information belongs to the target base station H, the target base station H performs automatic handover admission control for the UE in the target cell h.
  • the context information of the UE is used to indicate that the at least one target base station saves context information of the UE in at least one second target cell.
  • the target base station H indicates that all cells belonging to the target base station H save context information of the UE, but do not perform automatic handover admission control for the UE; if the target cell indicates at least one target indicated by the information If the target cell h belongs to the target base station H, the target base station H instructs the target cell h to save the context information of the UE, and performs automatic handover admission control for the UE in the target cell h.
  • the context information of the UE includes one or more of the following: security capability information of the UE, access network security key information, E-RAB (Evolved Radio Access Bearer) bearer information of the UE, The handover restriction list and RRC context information of the UE are described.
  • the RRC context information includes at least capability information of the UE.
  • the RRC context information may further include one or more of the following: an access layer configuration (AS-Config), a radio resource management configuration (RRM-Config), and an access layer context (AS). -Context).
  • the access stratum context includes re-establishment information for the UE of the at least one re-establishment target cell for each of the at least one target base station.
  • the access layer configuration includes all air interface configuration information of the UE in the original cell, such as a measurement configuration, a cell radio network temporary identifier C-RNTI, an original cell DL-EARFCN, a radio resource configuration, a main information block (MIB), and a system. Message SIB1/SIB2 and the number of original cell ports.
  • the automatic handover preparation request may further carry bearer information of an evolved radio access bearer E-RAB that is required to be received by the at least one target base station, for requesting the at least one target base station. Determining whether to accept the bearer information of the E-RAB that needs to be accepted.
  • E-RAB evolved radio access bearer
  • Step S102 The original base station receives an automatic handover preparation response message sent by the at least one target base station.
  • the original base station receives an automatic handover preparation response message sent by the at least one target base station.
  • the at least one target base station may indicate at least one target cell according to the target cell indication information in the automatic handover preparation request.
  • the UE performs automatic handover admission control, and the at least one target base station carries the first target cell information that successfully accepts the UE for automatic handover in the automatic handover preparation response message, and the original base station receives the automatic The handover preparation response message can learn the first target cell information that successfully accepts the UE for automatic handover.
  • the first target cell information carried in the automatic handover preparation request sent by the original base station may be the first target for successfully accepting the UE for automatic handover.
  • the cell identifier of the cell may also be information that the one or more target cells indicated by the target cell indication message succeeds that the UE performs automatic handover. For example, for the target base station H, if no target cell of the one or more target cells indicated by the target cell indication information belongs to the target base station H, the first target cell that the target base station H sends to the original base station The information may be that the original base station does not have a cell successfully accepting the UE for automatic handover under the target base station H.
  • the target base station H instructs the target cell h to perform automatic handover admission control for the UE, if the target If the cell h successfully accepts the UE for automatic handover, the target base station H may send the first target cell information carrying the cell identifier of the target cell h to the original base station; or, for only one target cell h belongs to the In the case of the target base station H, the first target cell information may be information carrying only "yes/success" or "no/failure", for example.
  • the manner in which the at least one target base station determines whether the automatic handover admission control of the UE in the target cell is successful may be the following manner, that is, if a target cell belongs to any of the following conditions: And the at least one target base station determines that the admission control failure of the UE in the target cell fails: a) the target cell does not support the public land mobile network PLMN service of the UE; or b) the target cell support The PLMN service of the UE belongs to the forbidden tracking area forbidden to the UE handover restriction list; or c) the target cell cannot successfully accept the evolved radio access bearer E that does not provide the lowest transmission rate guarantee non-GBR type - RAB bearer; or d) the target base station fails to reserve the cell radio network temporary identity C-RNTI for the UE in the target cell; or f) the target base station is the UE in the target cell
  • the dedicated random access channel RACH resource is reserved and the air interface radio resource is reserved.
  • Step S103 If the automatic handover preparation response message sent by the at least one target base station includes the first target cell information that successfully accepts the UE for automatic handover, the original base station sends an automatic handover configuration information to the UE.
  • the automatic handover configuration information includes at least a cell identifier of the first target cell.
  • the original base station sends automatic handover configuration information to the UE after receiving the automatic handover preparation response message sent by the at least one target base station.
  • the original base station may determine, according to the received automatic handover preparation response message, a cell identifier of the first target cell that successfully accepts the UE to perform automatic handover, and then in the automatic handover configuration information sent to the UE. Carrying a cell identifier of the first target cell. In this way, the UE can know whether the target cell successfully performs the automatic handover of the UE before the automatic handover, so that the UE optimizes the target cell selection of the automatic handover, thereby reducing the automatic handover delay.
  • the at least one target base station determines (i) the accepted E-RAB. Carrying and (ii) rejecting at least one of the E-RAB bearers, and then indicating to the original base station by the automatic handover preparation response message, to facilitate wireless between the original base station and the at least one target base station Communication.
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the automatic handover configuration information may also carry the RRC resource configuration information of the first target cell to the UE, or may not carry the RRC resource of the first target cell to the UE. Configuration information.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, for example, a first type: a common RRC resource configuration, that is, only a common RRC resource configuration is performed on the UE.
  • the second type C-RNTI configuration, that is, the first target cell reserves the C-RNTI only for the UE;
  • the third type the C-RNTI configuration and the air interface radio resource configuration, that is, the first target cell A C-RNTI and an air interface radio resource configuration are reserved for the UE;
  • a fourth type a C-RNTI configuration and a dedicated RACH resource configuration, that is, the first target cell reserves a C-RNTI and a dedicated RACH for the UE.
  • the fifth type the C-RNTI configuration, the air interface radio resource configuration, and the dedicated RACH resource configuration, that is, the first target cell reserves C-RNTI, air interface radio resource, and dedicated RACH resource for the UE.
  • the first target cell information may carry the specific content of the RRC resource configuration type, for example, a C-RNTI configuration, and may also carry only the code corresponding to the RRC resource configuration type, for example,
  • the RRC resource configured by the first target cell for the UE is the third type described above.
  • the automatic handover preparation request and the automatic handover preparation response message may be sent through an X2 interface, or may be sent through an S1 interface.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the RRC resource configuration information of the first target cell to the UE may be a public RRC resource configuration (Radio Resource Config Common) for the UE, or may be dedicated RRC only to the UE.
  • the resource configuration may also be a common RRC resource configuration and a dedicated RRC resource configuration for the UE.
  • the dedicated RRC resource includes at least a C-RNTI reserved by the first target cell for the UE.
  • the common RRC resource configuration information is used to transmit a system broadcast message of the target cell, where the dedicated RRC resource configuration information is used to indicate whether the first target cell successfully reserves a dedicated resource for the UE. If the first target cell successfully reserves the dedicated resource for the UE, the dedicated RRC resource configuration information may be further used to indicate that the first target cell is a dedicated resource configured by the UE.
  • the dedicated RRC resource configuration information may include a C-RNTI reserved by the first target cell for the UE, and may also include a dedicated RACH reserved for the UE in the first target cell. At least one of a resource and an air interface radio resource (eg, a physical layer dedicated channel resource, an air interface radio bearer resource).
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the original base station sends the automatic handover configuration information to the UE includes any one of the following (i) and (ii): (i) from the S1 application protocol S1AP in the handover preparation response message.
  • the RRC transparent container Transparent Container field obtained in the X2AP field is sent to the UE by using an RRC message, where the Transparent Container field carries the RRC resource configuration information configured by the first target cell for the UE.
  • the automatic handover preparation response message sent by the at least one target base station to the original base station further carries the RRC resource configuration information of the first target cell to the UE.
  • the at least one target base station may send the RRC resource configuration information to the original base station in a plurality of different manners.
  • the at least one target base station may put the RRC resource configured by the first target cell for the UE into the S1AP in the handover preparation response message by using an S1AP or X2AP field in the automatic handover preparation response message.
  • the X2AP field is sent to the original base station.
  • the original base station obtains the RRC resource configuration information configured by the first target cell for the UE from the S1AP or X2AP field of the automatic handover preparation response message after receiving the automatic handover preparation response message, and generates an RRC.
  • a message is sent to the UE.
  • the at least one target base station may also automatically switch the RRC transparent container field of the preparation response message, that is, the at least one target base station may put the RRC resource configuration of the first target cell to the UE in the automatic
  • the RRC transparent container field of the handover preparation response message is sent to the original base station.
  • the original base station receives the automatic handover preparation response message and sends an RRC transparent container field obtained from an S1AP or X2AP field of the automatic handover preparation response message to the UE by using an RRC message, where the RRC transparent container field
  • the RRC resource configuration information configured by the first target cell for the UE is carried in the RRC resource configuration information.
  • the at least one target base station may form an RRC message for the RRC resource configuration information configured for the UE in all the first target cells, and may also set the RRC resource of each first target cell.
  • the configurations are respectively configured to form an RRC message, which is not specifically limited in this embodiment of the present disclosure.
  • the at least one target base station may further send the automatic handover preparation response message to the original base station by using the combination of the foregoing two manners.
  • the at least one target base station may send the common RRC resource configuration information and the dedicated RRC resource configuration information in the S1AP or X2AP field in the automatic handover preparation response message to the original base station, and use other dedicated resources. (eg, dedicated RACH resources, air interface radio resources, etc.) are sent to the original base station in the RRC transparent container field in the automatic handover preparation response message.
  • the manner in which the original base station sends the automatic handover configuration information to the UE includes: sending, by the original base station, one or more of the following information to the UE by using an RRC reconfiguration message: the first target cell a C-RNTI of the UE in the first target cell and the dedicated RACH resource in the cell identifier, the common RRC resource configuration information, and the dedicated RRC resource configuration information.
  • the automatic handover configuration information includes at least a cell identifier of the first target cell and a cell identifier of the second target cell.
  • the at least one target base station may instruct all cells or one or more target cells under the target base station to save context information of the UE according to the automatic handover preparation request.
  • the automatic handover configuration information sent to the UE carries the cell identifier of the second target cell that stores the UE context information.
  • the original base station may directly determine a second target cell that saves the UE context information according to the automatic handover preparation request. Specifically, the original base station determines that all cells subordinate to the target base station H are second target cells that successfully save the UE context information.
  • the context information of the UE includes one or more of the following: security capability information of the UE, access network security key information, E-RAB bearer information of the UE, and handover of the UE. a restriction list, RRC context information; wherein the RRC context information includes at least capability information of the UE.
  • the RRC context information further includes one or more of the following: an access layer configuration, a radio resource management configuration, and an access layer context, where the access layer context is included in the at least one target base station.
  • the method before the sending, by the original base station, the automatic handover configuration information to the UE, the method further includes: if the context information of the UE carries the access layer context, the original base station determines The re-establishment target cell in the access layer context is a second target cell that saves the UE context information.
  • the method before the sending, by the original base station, the automatic handover configuration information to the UE, the method further includes: if the context information of the UE carries the access layer context, the original The base station determines that the re-establishment target cell in the access layer context is a second target cell that stores context information of the UE. That is, in this embodiment, if the access layer context is carried in the context information of the UE, the original base station determines the second target cell according to the access layer context, that is, determining the location The re-establishment target cell in the access layer context is the second target cell.
  • the re-establishment information includes identity verification information (ShortMAC-I) of the UE in the re-establishment target cell and a key (KeNB) of the UE in the re-establishment target cell.
  • the re-establishment target cell includes the first target cell that successfully accepts the UE for automatic handover, that is, the set of the first target cell is equal to the set of the re-establishment target cell.
  • the set of the first target cell is a subset of the set of re-established target cells.
  • the re-establishment target cell supports a PLMN service of the UE or the re-establishment target cell not only supports the PLMN service of the UE but does not belong to the UE handover restriction list. Indicated prohibited tracking area.
  • the original base station sends the UE information to the UE.
  • the automatically switched configuration information that is sent does not include the cell identifier and the RRC resource configuration of the first target cell, and only includes the cell identifier of the second target cell.
  • the UE receives the automatic handover configuration message, and may determine, according to the automatic handover configuration message, a target cell that needs to be handed over when automatic handover is required. A detailed description will be given below on how the UE performs automatic handover according to the automatic handover configuration message.
  • the UE If the first target cell (that is, the cell in which the RRC resource is configured for the UE) has a target cell that meets the first automatic handover condition of the UE (eg, the signal quality is greater than the first threshold), the UE A target cell that performs automatic handover is selected in the first target cell. If the first target cell does not have a target cell that meets the first automatic handover condition of the UE, the UE selects to perform in the second target cell (ie, a cell that stores context information of the UE) The target cell that is automatically switched. If the second target cell has a target cell that meets the second automatic handover condition of the UE (for example, the signal quality is greater than the second threshold), the UE selects a target for automatic handover from the second target cell. Community.
  • the UE selects to meet the third automatic handover condition in the cell that does not have the context information of the UE (for example, the signal quality is greater than the first
  • the three-threshold cell is used as the target cell for automatic handover.
  • the target cell that is automatically switched may be selected according to the RRC resource type. For example, if a plurality of first target cells satisfy the first automatic handover condition of the UE, and the RRC resource types configured for the UE are different, the UE selects according to the following high to low priority order.
  • a target cell that performs automatic switching a fifth type, a fourth type, a third type, a second type, and a first type. If the UE selects a cell from the first target cell as the target cell for automatic handover, the UE applies the RRC resource configuration of the target cell to the UE, and applies the parameter in the RRC resource configuration.
  • the protocol layer of the UE eg, PHY layer / MAC layer / RLC layer / PDCP layer / RRC layer.
  • the UE determines whether the signal quality of the cell in the second target cell satisfies a second threshold and determines that the signal quality satisfies the Whether the cell of the second threshold is a suitable cell of the UE. That is, the UE selects, in the second target cell, a cell whose signal quality satisfies a second threshold and is a suitable cell of the UE as a target cell for automatic handover.
  • the suitable cell of the UE is a cell that does not include a barred indication in the system broadcast message, supports a PLMN service of the UE or an equivalent PLMN (EPLMN), and the TA does not belong to the forbidden TA of the UE.
  • PLMN PLMN service of the UE
  • EPLMN equivalent PLMN
  • the UE determines whether the signal quality of the cell satisfies a third threshold and whether it is a suitable cell of the UE. That is, the condition that the UE selects the target cell for automatic handover in the cell that does not have the context information of the UE is that the signal quality of the cell satisfies a third threshold and the suitable cell of the UE.
  • the suitable cell of the UE is a cell that does not include a barred indication in the system broadcast message, supports a PLMN service of the UE or an equivalent PLMN (EPLMN), and the TA does not belong to the forbidden TA of the UE.
  • the first automatic switching condition, the second automatic switching condition, and the third automatic switching condition are configurations and measurements of the measurement report in the original base station by using a measurement configuration message.
  • the at least one of the object configurations is sent to the UE, and the first automatic switching condition, the second automatic switching condition, and the third automatic switching condition may be the same or different.
  • the third threshold is greater than or equal to The second threshold, the second threshold is greater than or equal to the first threshold.
  • the UE After determining the target cell that needs to be accessed, the UE sends an access request to request access to the target cell, and the manner in which the UE requests access to the target cell is described in detail in combination with several different situations. .
  • the target cell that the UE determines to access is the cell in the first target cell
  • the RRC resource configuration information of the first target cell to the UE includes a dedicated RRC resource configuration for the UE
  • the information (including at least C-RNTI)
  • the UE accesses the target cell through a random access procedure with C-RNTI and sends an automatic handover complete message to complete automatic handover.
  • the target cell successfully reserves the C-RNTI and the air interface radio resource (the physical layer dedicated channel resource and the air interface radio bearer resource)
  • the process and the traditional UE access the target cell
  • the automatic switching process is the same, as shown in FIG. 3, and details are not described herein again.
  • the UE sends an automatic handover complete message to the target cell, and the base station to which the target cell belongs may initiate the RRC after receiving the automatic handover complete message. And reconfiguring the message to configure the air interface radio resource of the UE in the target cell.
  • the target cell that needs to be accessed by the UE is a cell in the first target cell, but the RRC resource configuration information of the first target cell to the UE does not include dedicated RRC resource configuration information for the UE ( At least the C-RNTI is included, or the target cell that the UE determines to access is the cell in the second target cell, and the UE accesses the target cell by using an initial random access procedure.
  • the UE sends an automatic handover request message to the base station to which the target cell belongs, where the UE carries the automatic handover request message.
  • the authentication information (Short MAC-I) of the UE.
  • the automatic handover request message is Only the identity verification message of the UE in the target cell may be carried.
  • the base station to which the target cell belongs compares the identity verification information of the UE with the identity verification information of the re-establishment information of the target cell in the context information of the UE, if And sending an automatic handover response message to the UE to notify the UE that the automatic handover is successful and apply the key in the re-establishment information for the target cell; otherwise, if the comparison is inconsistent, the automatic handover is sent to the UE.
  • the base station to which the target cell belongs may also initiate an RRC reconfiguration message after the automatic handover response message is sent to the UE, and configure the air interface radio resource of the target cell in the target cell. .
  • the UE accesses the target cell by using an initial random access procedure.
  • the base station to which the target cell belongs needs to obtain the context information of the UE from the original base station of the UE. Specifically, as shown in FIG.
  • the UE sends an automatic handover request message to the base station to which the target cell belongs, because the target cell does not have the context information of the UE,
  • the base station to which the target cell belongs acquires the C-RNTI of the original cell, the physical cell identifier of the original cell, and then sends a UE context request to the original base station of the UE to request the
  • the original base station acquires the context information of the UE, where the UE context request carries at least the identifier of the original base station and the identifier of the UE in the original cell.
  • the identifier of the UE in the original base station may be an X2AP identifier, a cell identifier of the UE in the original cell C-RNTI or an original cell (eg, a physical cell identifier or a cell global identifier ECGI (E-UTRAN cell global identifier)).
  • the base station to which the target cell belongs compares the identity verification information of the UE with the identity verification information of the re-establishment information of the target cell in the UE context, and if the comparison is consistent, sends an automatic handover response to the UE. And applying the key of the UE in the re-establishment information of the target cell. Otherwise, if the comparison is inconsistent, an automatic handover reject message is sent to the UE.
  • the base station to which the target cell belongs may also initiate an RRC reconfiguration message after the automatic handover response message is sent to the UE, and configure the air interface radio resource of the target cell in the target cell. .
  • the base station to which the target cell belongs is the original base station, after the base station to which the target cell belongs sends the automatic handover response message to the UE, regardless of the type of the target cell selected by the UE.
  • the base station sends an automatic handover indication message for instructing the original base station to start data forwarding.
  • the automatic handover indication message carries at least the identifier of the UE at the original base station. For example, the X2AP identifier described above, the UE in the original cell C-RNTI, or the cell identifier of the original cell, and the like.
  • the original base station accessed by the UE sends an automatic handover preparation request that carries at least one context information of the UE and target cell indication information to at least one target base station, where the target cell indication information is used.
  • the original base station receives an automatic handover preparation response message sent by the at least one target base station; and if the automatic handover preparation response message sent by the at least one target base station includes the method of successfully accepting the UE for automatic handover
  • the target base station sends the automatic handover configuration information to the UE, where the automatic handover configuration information includes at least the cell identifier of the first target cell.
  • the original base station that the UE accesses can indicate that the target base station performs automatic handover admission control on the UE before the automatic handover, and indicates the cell that successfully performs automatic handover admission control on the UE to the UE, so that the UE can automatically
  • the target cell selection of the handover is optimized to reduce the handover delay.
  • FIG. 6 is a schematic flowchart of an automatic handover preparation method according to an embodiment of the present disclosure.
  • the execution body of the automatic handover preparation method is a target base station. As shown in FIG. 6, the method includes the following steps S601-S603.
  • Step S601 The target base station receives an automatic handover preparation request that is sent by the original base station accessed by the user terminal UE and carries at least the context information of the UE and the target cell indication information.
  • Step S602 The target base station performs automatic handover admission control on the UE according to the target cell indication information, and the target base station saves the context of the UE in at least one second target cell according to the context information of the UE. information.
  • Step S603 The target base station sends an automatic handover preparation response message to the original base station, where the automatic handover preparation response message includes successfully configuring the UE if the target base station successfully accepts the UE for automatic handover. First target cell information of the RRC resource.
  • the method further includes: determining, by the target base station, that the UE is automatically switched and accepted in the at least one target cell. Whether the control is successful.
  • the target base station determines that the automatic handover admission control fails for the UE in the target cell: (1) the target cell does not support the The public land mobile network (PLMN) service of the UE; (2) the target cell supports the PLMN service of the UE but belongs to the forbidden tracking area of the UE handover restriction list forbidden TA; (3) the target cell cannot successfully accept Providing a lowest transmission rate to ensure an evolved radio access bearer E-RAB bearer of a non-GBR type; (4) the target base station fails to reserve a cell radio network temporary identifier C-RNTI for the UE in the target cell (5) The target base station reserves a dedicated random access channel RACH resource for the UE in the target cell and fails to reserve air interface radio resources.
  • PLMN public land mobile network
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE.
  • the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the target base station sends the automatic handover preparation response message to the original base station includes at least one of the following (1) and (2): (1) the first target cell is The RRC resource configured by the UE is sent to the original base station in an S1 application protocol S1AP or X2 application protocol X2AP field in the automatic handover preparation response message; and (2) the first target cell is the UE The configured RRC resource is sent to the original base station in an RRC transparent container Transparent Container field in the handover preparation response message.
  • the RRC resource configuration of the UE by the target base station according to the target cell indication information includes: if the target cell indication information includes a cell identifier of at least one cell under the target base station, The target base station performs automatic handover admission control on the UE in the at least one target cell; and if the target cell indication information does not include the cell identifier of the cell under the target base station, the target base station does not The UE performs automatic handover admission control.
  • the embodiment shown in FIG. 6 may be the target base station side embodiment corresponding to the embodiment shown in FIG. 1.
  • the related steps performed by the target base station may refer to the related description in the embodiment shown in FIG. I won't go into details here.
  • FIG. 7 is a schematic flowchart diagram of an automatic handover preparation method according to an embodiment of the present disclosure.
  • the execution body of the automatic handover preparation method is a UE. As shown in FIG. 7, the method includes the following steps S701-S702.
  • Step S701 The user terminal UE receives the automatic handover configuration information sent by the original base station.
  • Step S702 If the automatic handover configuration information includes at least a cell identifier of the first target cell that successfully accepts the UE for automatic handover, the UE selects an automatically switched target cell according to the automatic handover configuration information.
  • the automatic handover configuration information further includes RRC resource configuration information of the first target cell to the UE.
  • the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of a second target cell that saves the UE context information.
  • the target cell that is automatically switched according to the automatic handover configuration information including: the UE automatically selecting, according to the cell identifier of the first target cell and the cell identifier of the second target cell, in the automatic handover configuration information.
  • the target cell of the handover including: the UE automatically selecting, according to the cell identifier of the first target cell and the cell identifier of the second target cell, in the automatic handover configuration information.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the method further includes: if the automatic handover configuration information does not include a cell identifier of a first target cell that successfully accepts the UE to perform automatic handover, and the automatic handover configuration information includes the second target cell The UE identifies the target cell that is automatically switched according to the cell identifier of the second target cell in the automatic handover configuration information.
  • the step of the UE selecting an automatically switched target cell according to the automatic handover configuration information includes: the UE preferentially selecting the first target cell as a target cell for automatic handover.
  • the method further includes: if the first target cell is an RRC resource to the UE
  • the configuration information includes dedicated RRC resource configuration information for the UE, and the UE accesses the first target cell by using an automatic handover complete message to complete automatic handover; if the first target cell is used for the UE
  • the RRC resource configuration information does not include dedicated RRC resource configuration information for the UE, and the UE accesses by sending an automatic handover request message carrying at least the identity verification information of the UE in the first target cell.
  • the first target cell is an RRC resource to the UE
  • the configuration information includes dedicated RRC resource configuration information for the UE, and the UE accesses the first target cell by using an automatic handover complete message to complete automatic handover; if the first target cell is used for the UE
  • the RRC resource configuration information does not include dedicated RRC resource configuration information for the UE, and the UE accesses by sending an automatic handover request message carrying at least the identity verification information of the UE in the first target cell.
  • the step of the UE selecting an automatically switched target cell according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration includes: the UE preferentially selecting the A target cell is used as the target cell for automatic handover; if the UE cannot select the first target cell as the target cell for automatic handover, the UE preferentially selects the second target cell as the target cell for automatic handover.
  • the method further includes: if the UE selects the second target cell as the target cell for automatic handover according to the automatic handover configuration information, the UE transmits the UE by using the An automatic handover request message of the identity verification information in the two target cells accesses the second target cell.
  • the step of the UE selecting an automatically switched target cell according to the cell identifier of the second target cell in the automatic handover configuration information includes: the UE preferentially selecting the second target cell as an automatic handover Target cell.
  • FIG. 7 may be a UE side embodiment corresponding to the embodiment shown in FIG. 1.
  • the related steps performed by the UE may refer to the related description in the embodiment shown in FIG. Let me repeat.
  • FIG. 8 shows a schematic structural diagram of an original base station.
  • the original base station includes a first processor 800, a first transceiver 810, a first memory 820, a first user interface 830, and a first bus interface 840.
  • the first processor 800 is configured to read a program in the first memory 820, and perform the following process: sending, to the at least one target base station, context information of the UE that carries the access to the first base original base station, and a target cell An automatic handover preparation request indicating information, where the target cell indication information is used to indicate that the at least one target base station performs automatic handover admission control on the UE according to the target cell indication information, where context information of the UE is used.
  • the at least one target base station Instructing the at least one target base station to save context information of the UE in at least one second target cell; receiving an automatic handover preparation response message sent by the at least one target base station; and transmitting automatic handover configuration information to the UE, where If the automatic handover preparation response message sent by the at least one target base station includes the first target cell information that successfully accepts the UE for automatic handover, the automatic handover configuration information includes at least the cell identifier of the first target cell. .
  • the first bus interface 840 can include any number of interconnected buses and bridges, specifically one or more processors represented by the first processor 800 and various circuits of the memory represented by the first memory 820. Linked together. The first bus interface 840 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore will not be further described herein. .
  • the first bus interface 840 provides an interface.
  • the first transceiver 810 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the first processor 800 is responsible for managing the first bus interface 840 and the usual processing, and the first memory 820 can store data used by the first processor 800 when performing operations.
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the first processor 800 sends the automatic handover configuration information to the UE includes at least one of the following (1) and (2): (1) from the automatic handover preparation response message.
  • the RRC transparent container Transparent Container field obtained in the S1AP or X2AP field of the response message is sent to the UE by using an RRC message, where the Transparent Container field carries the RRC resource configuration information configured by the first target cell for the UE.
  • the manner in which the first processor 800 sends the automatic handover configuration information to the UE includes: the processor 800 sends one or more of the following information to the UE by using an RRC reconfiguration message: a cell identifier of the first target cell, the common RRC resource configuration information, a C-RNTI of the UE in the first target cell, and the dedicated RACH resource in the dedicated RRC resource configuration information.
  • the automatic handover configuration information includes at least a cell identifier of the first target cell and a cell identifier of the second target cell.
  • the context information of the UE includes one or more of the following: security capability information of the UE, access network security key information, E-RAB bearer information of the UE, and handover of the UE. a restriction list, RRC context information; wherein the RRC context information includes at least capability information of the UE.
  • the RRC context information further includes one or more of the following: an access layer configuration, a radio resource management configuration, and an access layer context, where the access layer context is included in the at least one target base station.
  • the method is further configured to: if the context information of the UE carries the access layer context, the original base station determines The re-establishment target cell in the access layer context is a second target cell that saves the UE context information.
  • the first processor 800 is further configured to send the automatic handover configuration information to the UE, where the automatic handover preparation response message sent by the at least one target base station does not include automatically receiving the UE for automatic And switching the first target cell information, where the automatic handover configuration information includes a cell identifier of the second target cell.
  • the original base station in the embodiment shown in FIG. 8 may be the original base station in the embodiment shown in FIG. 1. Any embodiment of the original base station in the embodiment shown in FIG. 1 may be shown in FIG. The foregoing original base station in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • Figure 9 shows a structural entity diagram of the target base station.
  • the target base station includes a second processor 900, a second transceiver 910, a second memory 920, a second user interface 930, and a second bus interface 940.
  • the second processor 900 is configured to read the program and data in the second memory 920 to perform the following process: receiving, by the original base station accessed by the user equipment UE, at least the context information carrying the UE and the target cell indication information Automatically switching the preparation request; performing automatic handover admission control on the UE according to the target cell indication information, and saving context information of the UE in the at least one second target cell according to the context information of the UE;
  • the original base station sends an automatic handover preparation response message, wherein if the second base station successfully performs automatic handover admission control for the UE, the automatic handover preparation response message includes a first target that successfully accepts the UE for automatic handover. Cell information.
  • the second bus interface 940 can include any number of interconnected buses and bridges, and in particular, various circuits of the memory represented by the one or more processors represented by the second processor 900 and the second memory 920. Linked together. The second bus interface 940 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore will not be further described herein. .
  • the second bus interface 940 provides an interface.
  • the second transceiver 910 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the second processor 900 is responsible for managing the bus architecture and normal processing, and the second memory 920 can store data used by the second processor 900 when performing operations.
  • the second processor 900 is responsible for managing the bus interface and the usual processing, and the second memory 920 can store data used by the second processor 900 when performing operations.
  • the second processor 900 is further configured to: determine whether the automatic handover admission control of the UE is successful in the at least one target cell. . If the target cell belongs to any one of the following (1)-(5), the processor determines that the automatic handover admission control fails for the UE in the target cell: (1) the target cell does not Supporting the public land mobile network PLMN service of the UE; (2) the target cell supports the PLMN service of the UE but belongs to the forbidden tracking area forbidden TA of the UE handover restriction list; (3) the target cell cannot succeed Accepting an evolved radio access bearer E-RAB bearer that does not provide a minimum transmission rate guarantee non-GBR type; (4) the second base station reserves a cell radio network temporary identifier C for the UE in the target cell - RNTI fails; (5) the second base station reserves a dedicated random access channel RACH resource for the UE in the target cell and reserves air interface radio resources fails.
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the second processor 900 sends the automatic handover preparation response message to the original base station includes at least one of the following (1) and (2): (1) the first target The RRC resource configured by the cell for the UE is sent to the original base station in an S1 application protocol S1AP or X2 application protocol X2AP field in the automatic handover preparation response message; and (2) the first target cell is The RRC resource configured by the UE is sent to the original base station in an RRC transparent container Transparent Container field in the handover preparation response message.
  • the step of the RRC resource configuration on the UE by the second processor 900 according to the target cell indication information includes: if the target cell indication information includes a cell of at least one cell under the target base station And the processor performs automatic handover admission control on the UE in the at least one target cell; and if the target cell indication information does not include a cell identifier of a cell under the target base station, The processor does not perform automatic handover admission control on the UE.
  • target base station in the embodiment shown in FIG. 9 can be the target base station in the embodiment shown in FIG. 6, and any implementation manner of the target base station in the embodiment shown in FIG. 6 can be implemented as shown in FIG.
  • the target base station in the example is implemented, and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • the UE includes a third processor 1000, a third transceiver 1010, a third memory 1020, a third user interface 1030, and a third bus interface 1040.
  • the third processor 1000 is configured to read a program in the third memory 1020, and perform the following process: receiving automatic switching configuration information sent by the source original base station; and if the automatic switching configuration information includes at least successfully receiving the UE for automatic switching The cell identifier of the first target cell is selected according to the automatic handover configuration information, and the target cell that is automatically switched is selected.
  • the third transceiver 1010 is configured to receive and transmit data under the control of the third processor 1000.
  • the third bus interface 1040 can include any number of interconnected buses and bridges, in particular the various circuits of the memory represented by the one or more processors represented by the third processor 1000 and the third memory 1020. together.
  • the third bus interface 1040 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore will not be further described herein.
  • the third bus interface 1040 provides an interface.
  • the third transceiver 1010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the third user interface 1030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the third processor 1000 is responsible for managing the bus architecture and normal processing, and the third memory 1020 can store data used by the third processor 1000 when performing operations.
  • the automatic handover configuration information further includes RRC resource configuration information of the first target cell to the UE.
  • the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of a second target cell that saves the UE context information.
  • the third processor 1000 selects the target cell that is automatically switched according to the automatic handover configuration information, including: selecting, according to the cell identifier of the first target cell and the cell identifier of the second target cell, in the automatic handover configuration information. The target cell that is automatically switched.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the third processor 1000 is further configured to: if the automatic handover configuration information does not include a cell identifier of a first target cell that successfully accepts the UE to perform automatic handover, and the automatic handover configuration information includes And determining, by the cell identifier of the second target cell, the target cell that is automatically switched according to the cell identifier of the second target cell in the automatic handover configuration information.
  • the step of the third processor 1000 selecting the target cell that is automatically switched according to the automatic handover configuration information includes: preferentially selecting the first target cell as a target cell for automatic handover.
  • the third processor 1000 selects the first target cell as the target cell for automatic handover according to the automatic handover configuration information, and is further configured to: if the first target cell uses the RRC resource of the UE
  • the configuration information includes dedicated RRC resource configuration information for the UE, where the third processor accesses the first target cell by sending an automatic handover complete message to complete automatic handover; and if the first target cell pair
  • the RRC resource configuration information of the UE does not include the dedicated RRC resource configuration information for the UE, and the processor automatically transmits the identity verification information that carries at least the UE in the first target cell.
  • the request message accesses the first target cell.
  • the step that the third processor 1000 selects the automatically switched target cell according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration includes: preferentially selecting the The first target cell is used as the target cell for automatic handover. If the third processor cannot select the first target cell as the target cell for automatic handover, the second target cell is preferentially selected as the target cell for automatic handover.
  • the third processor 1000 is further configured to: if the third processor selects the second target cell as the target cell for automatic handover according to the automatic handover configuration information, An automatic handover request message of the identity verification information of the UE in the second target cell accesses the second target cell.
  • the step of the third processor 1000 selecting an automatically switched target cell according to the cell identifier of the second target cell in the automatic handover configuration information includes: preferentially selecting the second target cell as an automatic handover Target cell.
  • the foregoing UE in the embodiment shown in FIG. 10 may be the UE in the embodiment shown in FIG. 7. Any embodiment of the UE in the embodiment shown in FIG. 7 may be the foregoing in the embodiment.
  • the UE implements and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 11 is a schematic structural diagram of an original base station.
  • the original base station includes: a first sending module 1101, configured to send, to the at least one target base station, an automatic handover preparation request that carries at least the context information of the user terminal UE that accesses the original base station and the target cell indication information, where The target cell indication information is used to indicate that the at least one target base station performs automatic handover admission control on the UE according to the target cell indication information, where context information of the UE is used to indicate that the at least one target base station is in at least one second Storing the context information of the UE in the target cell; the first receiving module 1102 is configured to receive an automatic handover preparation response message sent by the at least one target base station; and the first determining module 1103 is configured to determine the at least one target base station Whether the sent automatic handover preparation response message includes the first target cell information that successfully accepts the UE for automatic handover, where the automatic handover preparation response message sent by the at least one target base station includes the first to successfully accept
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the first sending module 1101 sends the automatic handover configuration information to the UE includes at least one of the following (1) and (2): (1) from the automatic handover preparation response message.
  • the RRC transparent container Transparent Container field obtained in the S1AP or X2AP field of the response message is sent to the UE by using an RRC message, where the Transparent Container field carries the RRC resource configuration information configured by the first target cell for the UE.
  • the first sending module 1101 sends the automatic switching configuration information to the UE, where the first sending module 1101 sends one or more of the following information to the UE by using an RRC reconfiguration message: a cell identifier of the first target cell, the common RRC resource configuration information, and a C-RNTI of the UE in the first target cell and the dedicated RACH resource in the dedicated RRC resource configuration information.
  • the automatic handover configuration information includes at least a cell identifier of the first target cell and a cell identifier of the second target cell.
  • the context information of the UE includes one or more of the following: security capability information of the UE, access network security key information, E-RAB bearer information of the UE, and handover of the UE. a restriction list, RRC context information; wherein the RRC context information includes at least capability information of the UE.
  • the RRC context information further includes one or more of the following: an access layer configuration, a radio resource management configuration, and an access layer context, where the access layer context is included in the at least one target base station.
  • the first determining module 1103 is further configured to: if the context information of the UE carries the access layer context And determining, by the re-establishment target cell in the access layer context, a second target cell that saves the UE context information.
  • the first sending module 1101 is further configured to send the automatic handover configuration information to the UE, where the automatic handover preparation response message sent by the at least one target base station does not include automatically receiving the UE for automatic
  • the first target cell information that is switched, the automatic handover configuration information includes a cell identifier of the second target cell.
  • the original base station in the embodiment shown in FIG. 11 may be the original base station in the embodiment shown in FIG. 1. Any embodiment of the original base station in the embodiment shown in FIG. 1 may be shown in FIG. The foregoing original base station in the embodiment is implemented, and the same beneficial effects are achieved, and details are not described herein again.
  • Figure 12 shows a structural entity diagram of a target base station.
  • the target base station includes: a second receiving module 1201, configured to receive an automatic handover preparation request that is sent by the original base station that is accessed by the user terminal UE and that carries the context information of the UE and the target cell indication information; the first configuration module 1202, The first saving module 1203 is configured to save the context information of the UE in the at least one second target cell according to the context information of the UE, where the UE performs automatic handover admission control according to the target cell indication information.
  • the second sending module 1204 is configured to send an automatic handover preparation response message to the original base station, where the automatic handover preparation response message includes successfully accepting the automatic handover request response message if the target base station successfully accepts the UE for automatic handover.
  • the UE performs first target cell information that is automatically switched.
  • the target base station further includes a second determining module 1205.
  • the second determining module 1205 is configured to: before the second sending module 1204 sends the automatic handover preparation response message to the original base station, determine to perform automatic handover admission control on the UE in the at least one target cell. whether succeed.
  • the second determining module 1205 determines that the automatic handover admission control fails for the UE in the target cell: (1) The target cell does not support the public land mobile network PLMN service of the UE; (2) the target cell supports the PLMN service of the UE but belongs to the forbidden tracking area of the UE handover restriction list forbidden TA; (3) the target The cell cannot successfully accept the evolved radio access bearer E-RAB bearer that does not provide the lowest transmission rate guarantee non-GBR type; (4) the second base station reserves the cell radio network temporary for the UE in the target cell The C-RNTI fails to be identified; (5) the second base station reserves a dedicated random access channel RACH resource for the UE in the target cell and fails to reserve air interface radio resources.
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the manner in which the second sending module 1204 sends the automatic handover preparation response message to the original base station includes at least one of the following (1) and (2): (1) the first target The RRC resource configured by the cell for the UE is sent to the original base station in an S1 application protocol S1AP or X2 application protocol X2AP field in the automatic handover preparation response message; and (2) the first target cell is The RRC resource configured by the UE is sent to the original base station in an RRC transparent container Transparent Container field in the handover preparation response message.
  • the first configuration module 1202 performs automatic handover admission control on the UE according to the target cell indication information, including: if the target cell indication information includes a cell identifier of at least one cell under the target base station The first configuration module 1202 performs automatic handover admission control on the UE in the at least one target cell; and if the target cell indication information does not include the cell identifier of the cell under the target base station, The first configuration module 1202 does not perform automatic handover admission control on the UE.
  • target base station in the embodiment shown in FIG. 12 can be the target base station in the embodiment shown in FIG. 6, and any implementation manner of the target base station in the embodiment shown in FIG. 6 can be implemented as shown in FIG.
  • the target base station in the example is implemented, and achieves the same beneficial effects, and details are not described herein again.
  • FIG. 13 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • the UE includes: a third receiving module 1301 configured to receive automatic switching configuration information sent by the original base station; and a third determining module 1302 configured to determine whether the automatic switching configuration information includes successfully receiving the The cell identifier of the first target cell that is automatically switched by the UE; and the first selecting module 1303, configured to: when the automatic handover configuration information includes the cell identifier of the first target cell that successfully accepts the UE for automatic handover And selecting, according to the automatic switching configuration information, a target cell that is automatically switched.
  • the automatic handover configuration information further includes RRC resource configuration information of the first target cell to the UE.
  • the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of a second target cell that saves the UE context information.
  • the first selection module 1303 selects a target cell that is automatically switched according to the automatic handover configuration information, and includes: the first selection module 1303, according to the cell identifier of the first target cell in the automatic handover configuration information, and the The cell identifier of the two target cells selects the target cell that is automatically switched.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes a first type to a fifth type.
  • the first type public RRC resource configuration.
  • the second type cell radio network temporary identification C-RNTI configuration.
  • the third type C-RNTI configuration and air interface radio resource configuration.
  • the fourth type C-RNTI configuration and dedicated random access channel RACH resource configuration.
  • the fifth type C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes at least one of a common RRC resource configuration information and a dedicated RRC resource configuration information, where the dedicated RRC resource configuration information includes at least the UE The C-RNTI in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, and a security parameter.
  • the first selection module 1303 is further configured to: if the automatic handover configuration information does not include a cell identifier of a first target cell that successfully accepts the UE to perform automatic handover, and the automatic handover configuration information includes And determining, by the cell identifier of the second target cell, the target cell that is automatically switched according to the cell identifier of the second target cell in the automatic handover configuration information.
  • the first selection module 1303 is further configured to preferentially select the first target cell as a target cell for automatic handover.
  • the user terminal further includes a first access module 1304, where the first access module 1304 is configured to: if the first target cell includes the pair of UEs in the RRC resource configuration information of the UE And the dedicated RRC resource configuration information is used to access the first target cell by using an automatic handover complete message to complete the automatic handover; and if the first target cell does not include the RRC resource configuration information of the UE
  • the dedicated RRC resource configuration information of the UE accesses the first target cell by sending an automatic handover request message carrying at least the identity verification information of the UE in the first target cell.
  • the first selection module 1303 is further configured to: preferentially select the first target cell as a target cell for automatic handover, and if the first target cell cannot be selected as a target cell for automatic handover, preferentially select The second target cell is used as a target cell for automatic handover.
  • the first access module 1304 is further configured to: if the first selection module 1303 selects the second target cell as the target cell for automatic handover according to the automatic handover configuration information, An automatic handover request message of the identity verification information of the UE in the second target cell accesses the second target cell.
  • the first selection module 1303 is further configured to: preferentially select the second target cell as a target cell for automatic handover.
  • the foregoing UE in the embodiment shown in FIG. 13 may be the UE in the embodiment shown in FIG. 7. Any embodiment of the UE in the embodiment shown in FIG. 7 may be the foregoing in the embodiment.
  • the UE implements and achieves the same beneficial effects, and details are not described herein again.
  • the original base station accessed by the user terminal UE transmits, to the at least one target base station, an automatic handover preparation request that carries at least the context information of the UE and the target cell indication information, where the target cell indication
  • the information is used to indicate that the at least one target base station performs automatic handover admission control on the UE according to the target cell indication information, where context information of the UE is used to indicate that the at least one target base station is in at least one second target cell.
  • the original base station And storing, by the original base station, an automatic handover preparation response message sent by the at least one target base station; if the automatic handover preparation response message sent by the at least one target base station includes successfully receiving the UE for automatic And the original base station sends the automatic handover configuration information to the UE, where the automatic handover configuration information includes at least the cell identifier of the first target cell.
  • the original base station that the UE accesses can indicate that the target base station performs automatic handover admission control on the UE before the automatic handover, and the cell that successfully accepts the UE to perform automatic handover is indicated to the UE, so that the UE can automatically switch.
  • the target cell selection is optimized to reduce the handover delay.
  • the disclosed method and apparatus may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • system and “network” are used interchangeably herein.
  • B corresponding to A means that B is associated with A, and B can be determined from A.
  • determining B from A does not mean that B is determined solely from A, and that B can also be determined based on and/or other information.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present disclosure.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, and the like, which can store program codes.
  • An embodiment of the present disclosure provides an A1, a handover preparation method, where the method includes: the original base station accessed by the user equipment UE transmits, to the at least one target base station, context information carrying at least the UE and a target cell.
  • An automatic handover preparation request indicating information where the target cell indication information is used to indicate that the at least one target base station performs radio resource control RRC resource configuration on the UE according to the target cell indication information, and context information of the UE And indicating that the at least one target base station saves context information of the UE in the at least one second target cell;
  • the original base station receives an automatic handover preparation response message sent by the at least one target base station; if the at least one target The automatic handover preparation response message sent by the base station includes first target cell information for successfully configuring the RRC resource for the UE, and the original base station sends automatic handover configuration information to the UE, where the automatic handover configuration information includes at least the foregoing The cell identity of a target cell.
  • A2 The method of A1, wherein the first target cell information comprises RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes: a first type: a public RRC resource. Configuration; second type: cell radio network temporary identifier C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; Five types: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes common RRC resource configuration information and/or dedicated RRC resource configuration information, and the dedicated RRC resource configuration information. At least the C-RNTI of the UE in the first target cell is included.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, Safety parameters.
  • any one of A2 to A5, wherein the manner in which the original base station sends automatic handover configuration information to the UE includes: from an S1 application protocol S1AP in the automatic handover preparation response message or Acquiring RRC resource configuration information configured by the first target cell for the UE, and generating an RRC message to be sent to the UE; and/or S1AP or X2AP that will automatically prepare a preparation response message from the X2 application protocol X2AP field
  • the RRC transparent container Transparent Container field obtained in the field is sent to the UE by using an RRC message, where the Transparent Container field carries an RRC message that the first target cell is the RRC resource configuration information configured by the UE.
  • a method according to A5, wherein the method for the original base station to send the automatic handover configuration information to the UE includes: the original base station passing the one or more of the following information in the RRC reconfiguration message.
  • the mobility control information element Mobility Control Info is sent to the UE: the cell identifier of the first target cell, the common RRC resource configuration information, and the UE in the dedicated RRC resource configuration information is in the first target C-RNTI in the cell, the dedicated RACH resource.
  • the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of the second target cell.
  • the context information of the UE comprises one or more of the following: security capability information of the UE, access network security key information, E- of the UE The RAB bearer information, the handover restriction list of the UE, and the RRC context information; wherein the RRC context information includes at least capability information of the UE.
  • the RRC context information further includes one or more of the following: an access layer configuration, a radio resource management configuration, and an access layer context; wherein the access layer The context includes re-establishment information for the UE for at least one re-establishment target cell under each of the at least one target base station.
  • the method further comprises: if the automatic handover preparation response message sent by the at least one target base station does not include the first target cell information that is configured to successfully configure the RRC resource for the UE And the original base station sends automatic handover configuration information to the UE, where the automatic handover configuration information includes a cell identifier of the second target cell.
  • a handover preparation method includes: the target base station receives an automatic handover preparation request that is sent by the original base station that is accessed by the user terminal UE, and that carries at least the context information of the UE and the target cell indication information;
  • the target base station performs radio resource control RRC resource configuration on the UE according to the target cell indication information, and the target base station saves context information of the UE in at least one second target cell according to the context information of the UE.
  • the target base station sends an automatic handover preparation response message to the original base station, and if the target base station successfully performs RRC resource configuration for the UE, the automatic handover preparation response message includes successfully configuring RRC resources for the UE.
  • the method further includes: determining, by the target base station, the at least one target cell Whether the RRC resource configuration is successful for the UE; wherein, if the target cell belongs to any of the following conditions, the target base station determines that the RRC resource configuration fails for the UE in the target cell: the target cell does not support The public land mobile network PLMN service of the UE; or the target cell supports the PLMN service of the UE but belongs to the forbidden tracking area forbidden TA of the UE handover restriction list; or the target cell cannot successfully accept the lowest provided
  • the transmission rate guarantees that the evolved radio access bearer E-RAB bearer of the non-GBR type; or the target base station fails to reserve the cell radio network temporary identifier C-RNTI for the UE in the target cell; or the target base station Reserving a dedicated random access channel RACH resource for the UE in the target cell and reserving the air interface radio resource fails.
  • the first target cell information includes RRC resource configuration information of the first target cell to the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes: a first type: a public RRC resource Configuration; second type: cell radio network temporary identifier C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; Five types: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the RRC resource configuration information of the first target cell to the UE includes common RRC resource configuration information and/or dedicated RRC resource configuration information, and the dedicated RRC resource configuration information. At least the C-RNTI of the UE in the first target cell is included.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, Safety parameters.
  • any one of B15 to B18, wherein the method for the target base station to send the automatic handover preparation response message to the original base station comprises: using the first target cell as the UE
  • the configured RRC resource is sent to the original base station in an S1 application protocol S1AP or X2 application protocol X2AP field in the automatic handover preparation response message; and/or an RRC configured by the first target cell as the UE
  • the resource is encapsulated into an RRC message and sent to the original base station in an RRC transparent container Transparent Container field in the handover preparation response message.
  • the step of performing RRC resource configuration on the UE by the target base station according to the target cell indication information includes: if the target cell indication information includes the target base station The cell identifier of the at least one cell, the target base station performs RRC resource configuration on the UE in the at least one target cell; if the target cell indication information does not include the cell identifier of the cell under the target base station, The target base station does not perform RRC resource configuration on the UE.
  • a handover preparation method where the method includes: the user terminal UE receives the automatic handover configuration information sent by the original base station; and if the automatic handover configuration information includes at least successfully configuring the radio resource control RRC resource for the UE The cell identifier of the first target cell, and the UE selects the target cell that is automatically switched according to the automatic handover configuration information.
  • the automatic handover configuration information further includes RRC resource configuration information of the first target cell to the UE.
  • the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of a second target cell that saves the UE context information; Selecting the target cell for automatic handover according to the automatic handover configuration information, including: the UE selecting an automatic handover target according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration information Community.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes: a first type: a public RRC resource. Configuration; second type: cell radio network temporary identifier C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; Five types: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the method of C22 wherein the RRC resource configuration information of the first target cell to the UE includes common RRC resource configuration information and/or dedicated RRC resource configuration information, and the dedicated RRC resource configuration information. At least the C-RNTI of the UE in the first target cell is included.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, Safety parameters.
  • the method of C21 wherein the method further comprises: if the automatic handover configuration information does not include a cell identifier of a first target cell that successfully configures an RRC resource for the UE, and the automatic handover The configuration information includes a cell identifier of the second target cell, and the UE selects an automatically switched target cell according to the cell identifier of the second target cell in the automatic handover configuration information.
  • step of the UE selecting the automatically switched target cell according to the automatic handover configuration information comprises: the UE preferentially selecting the first target cell as a target cell for automatic handover.
  • the method of C22 wherein, if the UE selects the first target cell as the target cell for automatic handover according to the automatic handover configuration information, the method further includes: if the first target The RRC resource configuration information of the UE to the UE includes the C-RNTI of the UE in the first target cell, and the UE accesses the first target cell by sending an automatic handover complete message to complete automatic handover;
  • the RRC resource configuration information of the first target cell to the UE does not include the C-RNTI of the UE in the first target cell, and the UE transmits at least the UE in the first target by sending An automatic handover request message of the identity verification information in the cell accesses the first target cell.
  • the method of C23 wherein the step of selecting, by the UE, the automatically switched target cell according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration comprises: The UE preferentially selects the first target cell as a target cell for automatic handover, and if the UE cannot select the first target cell as a target cell for automatic handover, the UE preferentially selects the second target cell. As the target cell for automatic handover.
  • the method of C23 or C27 wherein the method further comprises: if the UE selects the second target cell as a target cell for automatic handover according to the automatic handover configuration information, the UE passes And sending an automatic handover request message carrying the identity verification information of the UE in the second target cell to access the second target cell.
  • step of the UE selecting an automatically switched target cell according to the cell identifier of the second target cell in the automatic handover configuration information comprises: the UE preferentially selecting a location
  • the second target cell is used as a target cell for automatic handover.
  • a first base station where the first base station is an original base station, where the first base station includes a processor, a transceiver, a memory, a user interface, and a network interface, where the processor is configured to: at least one The target base station sends an automatic handover preparation request that carries at least the context information of the UE that accesses the first base station and the target cell indication information, where the target cell indication information is used to indicate that the at least one target base station is configured according to the The target cell indication information is used to perform radio resource control RRC resource configuration on the UE, and the context information of the UE is used to indicate that the at least one target base station saves context information of the UE in at least one second target cell; An automatic handover preparation response message sent by the at least one target base station; and the automatic handover configuration information is sent to the UE, where the automatic handover preparation response message sent by the at least one target base station includes successfully configuring the RRC resource for the UE.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes: a first type: a public RRC resource configuration; second type: cell radio network temporary identity C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; And the fifth type: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the configuration information includes at least a C-RNTI of the UE in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, and an evolved radio access bearer E-RAB bearer. Resources, security parameters.
  • the first base station according to any one of D34 to D37, wherein the manner in which the processor sends the automatic handover configuration information to the UE comprises: an S1 application protocol in the automatic handover preparation response message. Acquiring RRC resource configuration information configured by the first target cell for the UE in an S1AP or X2 application protocol X2AP field, and generating an RRC message to be sent to the UE; and/or an S1AP that will automatically prepare a preparation response message from the handover Or the RRC transparent container Transparent Container field obtained in the X2AP field is sent to the UE by using an RRC message, where the Transparent Container field carries an RRC message that the first target cell is the RRC resource configuration information configured by the UE.
  • the first base station according to D37, wherein the manner in which the processor sends the automatic handover configuration information to the UE comprises: the processor adopting one or more of the following information to pass the RRC reconfiguration message.
  • the mobility control information unit Mobility Control Info is sent to the UE: the cell identifier of the first target cell, the common RRC resource configuration information, and the UE in the dedicated RRC resource configuration information is in the a C-RNTI in a target cell, the dedicated RACH resource.
  • the context information of the UE includes one or more of the following: security capability information of the UE, access network security key information, and the UE E-RAB bearer information, a handover restriction list of the UE, and RRC context information; wherein the RRC context information includes at least capability information of the UE.
  • the first base station according to D41 wherein the RRC context information further includes one or more of the following: an access layer configuration, a radio resource management configuration, and an access layer context; wherein the The inbound layer context includes re-establishment information for the UE for at least one re-establishment target cell under each of the at least one target base station.
  • the first base station according to D42 wherein, before the sending the automatic handover configuration information to the UE, the processor is further configured to: if the context information of the UE carries the access layer context And the original base station determines that the re-establishment target cell in the access layer context is a second target cell that saves the UE context information.
  • the first base station according to D33, wherein the processor is further configured to: send automatic handover configuration information to the UE, where, if the at least one target base station sends an automatic handover preparation response message, The first target cell information that successfully configures the RRC resource for the UE is not included, and the automatic handover configuration information includes a cell identifier of the second target cell.
  • a second base station where the second base station is a target base station, where the second base station includes a processor, a transceiver, a memory, a user interface, and a network interface, where the processor is configured to: receive a user terminal.
  • An automatic handover preparation request that carries the context information of the UE and the target cell indication information that is sent by the original base station that is accessed by the UE; performs radio resource control RRC resource configuration on the UE according to the target cell indication information, and The context information of the UE is used to store the context information of the UE in the at least one second target cell; the automatic handover preparation response message is sent to the original base station, and if the second base station successfully performs RRC resource configuration for the UE, The automatic handover preparation response message includes first target cell information that successfully configures the RRC resource for the UE.
  • the second base station wherein before the sending, by the processor, the automatic handover preparation response message to the original base station, the method is further configured to: determine, in the at least one target cell, the Whether the RRC resource configuration is successful by the UE; wherein, if the target cell belongs to any of the following conditions, the processor determines that the RRC resource configuration fails to be performed on the UE in the target cell: the target cell does not support the UE Public land mobile network PLMN service; or the target cell supports the PLMN service of the UE but belongs to the forbidden tracking area forbidden TA of the UE handover restriction list; or the target cell cannot successfully accept the lowest transmission rate guarantee non
  • the evolved radio access of the GBR type carries the E-RAB bearer; or the second base station fails to reserve the cell radio network temporary identifier C-RNTI for the UE in the target cell; or the second base station is in the In the target cell, the dedicated random access channel RACH resource is reserved for the UE, and the air interface radio resource is reserved.
  • the RRC resource configuration information includes: the RRC resource type configured by the first target cell for the UE, where the RRC resource type includes: a first type: public RRC resource configuration; second type: cell radio network temporary identity C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; And the fifth type: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the second base station wherein the RRC resource configuration information of the first target cell to the UE includes common RRC resource configuration information and/or dedicated RRC resource configuration information, and the dedicated RRC resource
  • the configuration information includes at least a C-RNTI of the UE in the first target cell.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, and an evolved radio access bearer E-RAB bearer. Resources, security parameters.
  • the second base station according to any one of E47 to E50, wherein the method for the processor to send the automatic handover preparation response message to the original base station comprises: using the first target cell as a location
  • the RRC resource configured by the UE is sent to the original base station in an S1 application protocol S1AP or X2 application protocol X2AP field in the automatic handover preparation response message; and/or the first target cell is configured for the UE
  • the RRC resource is encapsulated into an RRC message and sent to the original base station in an RRC transparent container Transparent Container field in the handover preparation response message.
  • the second base station according to E45 wherein the step of performing RRC resource configuration on the UE according to the target cell indication information includes: if the target cell indication information includes the target a cell identifier of the at least one cell in the base station, where the processor performs RRC resource configuration on the UE in the at least one target cell; if the target cell indication information does not include the cell identifier of the cell under the target base station The processor does not perform RRC resource configuration on the UE.
  • a user terminal UE the UE includes a processor, a transceiver, a memory, a user interface, and a network interface, where the processor is configured to: receive automatic switching configuration information sent by the original base station;
  • the automatic handover configuration information includes at least a cell identifier of a first target cell that successfully configures a radio resource control RRC resource for the UE, and selects a target cell that is automatically switched according to the automatic handover configuration information.
  • the automatic handover configuration information further includes RRC resource configuration information of the first target cell to the UE.
  • the UE according to F53 or F54 wherein the automatic handover configuration information includes a cell identifier of the first target cell and a cell identifier of a second target cell that saves the UE context information;
  • the selecting the target cell for automatic handover according to the automatic handover configuration information includes: selecting, according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration information, an automatically switched target cell.
  • the RRC resource configuration information includes an RRC resource type configured by the first target cell for the UE, and the RRC resource type includes: a first type: a public RRC resource. Configuration; second type: cell radio network temporary identifier C-RNTI configuration; third type: C-RNTI configuration and air interface radio resource configuration; fourth type: C-RNTI configuration and dedicated random access channel RACH resource configuration; Five types: C-RNTI configuration, air interface radio resource configuration, and dedicated RACH resource configuration.
  • the UE according to the F54 wherein the RRC resource configuration information of the first target cell to the UE includes common RRC resource configuration information and/or dedicated RRC resource configuration information, and the dedicated RRC resource configuration information. At least the C-RNTI of the UE in the first target cell is included.
  • the dedicated RRC resource configuration information further includes one or more of the following: a dedicated RACH resource, an air interface radio resource, an evolved radio access bearer E-RAB bearer resource, Safety parameters.
  • the UE of the F53 wherein the processor is further configured to: if the automatic handover configuration information does not include a cell identifier of a first target cell that successfully configures an RRC resource for the UE, and The automatic handover configuration information includes a cell identifier of the second target cell, and the target cell that is automatically switched is selected according to the cell identifier of the second target cell in the automatic handover configuration information.
  • step of selecting, by the processor, the automatically switched target cell according to the automatic handover configuration information comprises: preferentially selecting the first target cell as a target cell for automatic handover.
  • the UE according to F54 wherein the processor selects the first target cell as a target cell for automatic handover according to the automatic handover configuration information, and is further configured to: if the first target cell pair
  • the RRC resource configuration information of the UE includes a C-RNTI of the UE in the first target cell, and the processor accesses the first target cell by sending an automatic handover complete message to complete automatic handover;
  • the RRC resource configuration information of the first target cell to the UE does not include the C-RNTI of the UE in the first target cell, and the processor transmits at least the UE in the first target by sending An automatic handover request message of the identity verification information in the cell accesses the first target cell.
  • the UE according to F55 wherein the step of selecting, by the processor, the automatically switched target cell according to the cell identifier of the first target cell and the cell identifier of the second target cell in the automatic handover configuration
  • the method includes: preferentially selecting the first target cell as a target cell for automatic handover, and if the processor cannot select the first target cell as a target cell for automatic handover, preferentially selecting the second target cell as an automatic handover Target cell.
  • the UE according to F55 or F59 wherein the processor is further configured to: if the processor selects the second target cell as a target cell for automatic handover according to the automatic handover configuration information, And sending an automatic handover request message carrying the identity verification information of the UE in the second target cell to access the second target cell.
  • the UE of the F59 wherein the step of selecting, by the processor, the automatically switched target cell according to the cell identifier of the second target cell in the automatic handover configuration information comprises: preferentially selecting the The two target cells serve as target cells for automatic handover.

Abstract

L'invention concerne un procédé de préparation de transfert intercellulaire, une station de base et un équipement utilisateur (UE), le procédé comprenant les étapes suivantes : une station de base d'origine ayant fait l'objet d'un accès par un UE envoie une demande de préparation de transfert intercellulaire automatique portant des informations de contexte d'UE et des informations d'indication de cellule cible à au moins une station de base cible, la ou les stations de base cibles effectuant, en fonction des informations d'indication de cellule cible, une commande d'autorisation de transfert intercellulaire automatique ; la station de base d'origine reçoit des informations de réponse de préparation de transfert intercellulaire automatique envoyées par la ou les stations de base cibles ; et si les informations de réponse de préparation de transfert intercellulaire automatique envoyées par la ou les stations de base cibles comprennent des premières informations de cellule cible autorisant l'UE à effectuer un transfert intercellulaire automatique, alors la station de base d'origine envoie des informations de configuration de transfert intercellulaire automatique à l'UE, les informations de configuration de transfert automatique comprenant au moins une identification de cellule d'une première cellule cible.
PCT/CN2018/076974 2017-02-23 2018-02-22 Procédé de préparation de transfert intercellulaire, station de base et équipement utilisateur WO2018153344A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113170372A (zh) * 2018-12-29 2021-07-23 深圳市欢太科技有限公司 小区连接处理方法、装置、移动终端及存储介质
CN114286395A (zh) * 2020-09-27 2022-04-05 中国电信股份有限公司 基站通信方法、基站、通信系统和存储介质

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111200847A (zh) * 2018-11-16 2020-05-26 华为技术有限公司 通信方法及装置
CN111491338B (zh) * 2019-01-28 2022-04-22 华为技术有限公司 上下文存储方法及装置
CN114501563B (zh) * 2019-09-30 2024-05-03 Oppo广东移动通信有限公司 无线通信方法、装置和网络设备
WO2022057817A1 (fr) * 2020-09-21 2022-03-24 上海朗帛通信技术有限公司 Procédé et appareils utilisés dans un nœud pour une communication sans fil
CN115119269B (zh) * 2021-03-17 2023-11-03 维沃移动通信有限公司 自回传网络的切换方法、装置及网络侧设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101026857A (zh) * 2006-02-17 2007-08-29 中兴通讯股份有限公司 一种硬切换过程中预先准备资源的方法
CN104469873A (zh) * 2013-09-25 2015-03-25 中兴通讯股份有限公司 小区切换方法及装置
CN105228200A (zh) * 2015-10-08 2016-01-06 西南交通大学 一种网络辅助ue控制的快速小区切换方法及装置
US20160345222A1 (en) * 2015-01-30 2016-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Handover in high speed scenario

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5354642B2 (ja) * 2008-04-09 2013-11-27 日本電気株式会社 無線通信システムおよびその通信方法
GB2472789A (en) * 2009-08-17 2011-02-23 Nec Corp In a lte-advanced network a target enb sends a source enb information to indicate to the ue which of multiple component carriers is to be used for initail acc
CN102215485B (zh) * 2010-04-04 2015-07-22 中兴通讯股份有限公司 多载波通信系统中保证多载波切换或重建安全性的方法
EP3179776B1 (fr) * 2010-12-23 2019-05-29 Huawei Technologies Co., Ltd. Procédé de détermination d'un critère de transfert dans un système de communication cellulaire sans fil
EP2981131A1 (fr) * 2011-05-23 2016-02-03 Interdigital Patent Holdings, Inc. Appareil et procédés pour transfert d'unité de transmission/réception sans fil (wtru) en groupe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101026857A (zh) * 2006-02-17 2007-08-29 中兴通讯股份有限公司 一种硬切换过程中预先准备资源的方法
CN104469873A (zh) * 2013-09-25 2015-03-25 中兴通讯股份有限公司 小区切换方法及装置
US20160345222A1 (en) * 2015-01-30 2016-11-24 Telefonaktiebolaget Lm Ericsson (Publ) Handover in high speed scenario
CN105228200A (zh) * 2015-10-08 2016-01-06 西南交通大学 一种网络辅助ue控制的快速小区切换方法及装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113170372A (zh) * 2018-12-29 2021-07-23 深圳市欢太科技有限公司 小区连接处理方法、装置、移动终端及存储介质
EP3902327A4 (fr) * 2018-12-29 2022-05-18 Shenzhen Heytap Technology Corp., Ltd. Procédé et appareil de traitement de connexion de cellule, et terminal mobile et support de stockage
CN113170372B (zh) * 2018-12-29 2022-11-29 深圳市欢太科技有限公司 小区连接处理方法、装置、移动终端及存储介质
CN114286395A (zh) * 2020-09-27 2022-04-05 中国电信股份有限公司 基站通信方法、基站、通信系统和存储介质

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