WO2017193940A1 - 基站间切换方法及装置 - Google Patents

基站间切换方法及装置 Download PDF

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Publication number
WO2017193940A1
WO2017193940A1 PCT/CN2017/083813 CN2017083813W WO2017193940A1 WO 2017193940 A1 WO2017193940 A1 WO 2017193940A1 CN 2017083813 W CN2017083813 W CN 2017083813W WO 2017193940 A1 WO2017193940 A1 WO 2017193940A1
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Prior art keywords
base station
tdm
source base
target base
information
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PCT/CN2017/083813
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English (en)
French (fr)
Inventor
方建民
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中兴通讯股份有限公司
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Publication of WO2017193940A1 publication Critical patent/WO2017193940A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method and apparatus for switching between base stations.
  • the Long Term Evolution (LTE) network includes an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and a corresponding Core Network (CN).
  • the E-UTRAN includes an evolved Node B (abbreviated as eNB).
  • the CN includes a Mobile Management Entity (MME) and a Serving Gateway (S-GW).
  • MME Mobile Management Entity
  • S-GW Serving Gateway
  • the eNB and the CN are connected through an S1 interface, and the eNBs can be connected through an X2 interface.
  • One eNB can manage one or more cells (Cells).
  • An interface between a user equipment (User Equipment, UE for short) and a cell is called a Uu interface (or an air interface).
  • the UE in a process of handover from a cell of one eNB to a cell of another eNB, the UE first disconnects from the source cell (ie, disconnects from the source base station), and then performs a connection with the target cell.
  • the connection ie, making a connection with the target base station
  • a method for avoiding short-term service interruption of a UE is that the UE maintains a connection with the source cell during the handover process until the UE successfully establishes a connection with the target cell.
  • this usually requires the UE to have the capability of supporting dual connectivity or multiple connections.
  • a UE that is in a single connection needs to have the capability of supporting dual connectivity
  • a UE that is in a dual connectivity needs to have the capability of supporting three connections.
  • normal UEs for example, only UEs that support single-connection capability
  • Embodiments of the present disclosure provide a method and apparatus for switching between base stations to at least solve related technologies. UEs with low support connectivity during the operation cannot achieve the problem of non-disruptive handover of the base station.
  • an inter-base station handover method comprising: negotiating with a target base station to determine information that allows a user equipment UE to remain with the source base station during handover by a source base station to the target base station a connection, and distinguishing, in the time domain, the radio resource allocated to the UE for the source base station and the target base station; controlling the UE to be handed over by the source base station to the target according to the negotiated information Base station.
  • an inter-base station handover method comprising: negotiating with a source base station to determine information that allows a user equipment UE to remain with the source during handover by the source base station to a target base station a connection of the base station, and distinguishing, in the time domain, the radio resource allocated to the UE for the source base station and the target base station; controlling, according to the negotiated information, the UE to be switched by the source base station to the Target base station.
  • an inter-base station handover apparatus comprising: a first negotiation module, configured to negotiate with a target base station to determine information that allows a user equipment UE to be handed over to a target base station by a source base station Maintaining a connection with the source base station during the process, and distinguishing, in the time domain, the radio resource allocated to the UE for the source base station and the target base station; the first control module is configured to be according to the negotiation Information controlling the UE to be handed over by the source base station to the target base station.
  • an inter-base station handover apparatus comprising: a second negotiation module, configured to negotiate with a source base station to determine information that allows a user equipment UE to be handed over to the target base station by the source base station Maintaining a connection with the source base station during the process, and distinguishing, in the time domain, the radio resource allocated to the UE for the source base station and the target base station; the second control module is configured to be according to the negotiation Information controlling the UE to be handed over by the source base station to the target base station.
  • a storage medium includes a stored program, wherein the program, when executed, performs the method of any of the above.
  • the negotiation between the source base station and the target base station may enable the UE to maintain the connection with the source base station during the handover process of the base station, thereby avoiding service interruption, and Moreover, the radio resources of the source base station and the target base station are separated in the time domain, and the interference can be further avoided, which effectively solves the problem that the UE with low connection support capability cannot implement the non-disruptive handover in the related art.
  • FIG. 1 is a flowchart of a first method of handover between base stations according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a second method of handover between base stations according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of a third method of handover between base stations according to an embodiment of the present disclosure
  • FIG. 5 is a second flowchart of inter-base station handover according to an embodiment of the present disclosure.
  • FIG. 6 is a structural block diagram of a first inter-base station switching apparatus according to an embodiment of the present disclosure
  • FIG. 7 is a structural block diagram of a second inter-base station switching apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a structural block diagram of a third inter-base station switching apparatus according to an embodiment of the present disclosure.
  • Embodiments in the present disclosure may be applied to an LTE system.
  • FIG. 1 is a flowchart of a first inter-base station handover method according to an embodiment of the present disclosure. As shown in FIG. 1, the process includes the following steps:
  • Step S102 negotiating with the target base station to determine the following information: allowing the user equipment (User Equipment (referred to as UE) maintains a connection with the source base station during handover by the source base station to the target base station, and distinguishes the radio resources allocated to the UE for the source base station and the target base station in the time domain;
  • UE User Equipment
  • Step S104 Control, according to the negotiated information, that the UE is handed over by the source base station to the target base station.
  • the above operation may be performed by the source base station.
  • the negotiation between the source base station and the target base station can enable the UE to maintain the connection with the source base station during the handover process of the base station, thereby avoiding service interruption, and the radio resources for the source base station and the target base station in the time domain. It is separate, and can further avoid interference, and effectively solves the problem that the UE with low connection support capability cannot implement non-disruptive handover in the related art.
  • determining the foregoing information in the negotiation with the target base station includes: sending a handover request (Handover Request) message to the target base station, where the handover request message carries a time division multiplexing (TDM) Requesting information for requesting the target base station to allow the UE to maintain a connection with the source base station during handover by the source base station to the target base station, and to allocate to the UE for the source base station and the target base station in the time domain And receiving the handover request acknowledgement (Handover Request Acknowledge) message, where the handover request acknowledgement message carries the TDM response information, where the TDM response information is used to indicate that the handover request message is agreed to be received.
  • TDM time division multiplexing
  • the foregoing step S104 may be used to control the UE to be handed over from the source base station to the target base station by: sending a first radio resource control (Radio Resource Control, RRC for short) connection to the UE according to the negotiated message.
  • RRC Radio Resource Control
  • An RRC Connection Reconfiguration message where the first RRC connection reconfiguration message carries time division multiplexing TDM allocation information for distinguishing radio resources for the source base station and the target base station in the time domain, where the first RRC connection is heavy
  • the message is used to instruct the UE to perform the following operations according to the TDM allocation information: performing TDM configuration according to the TDM allocation information, and transmitting an RRC connection reconfiguration complete message to the target base station after completing the TDM configuration; receiving the target base station according to the RRC connection Reconstructing the second RRC connection reconfiguration message sent by the completion message; canceling the TDM configuration according to the TDM allocation cancellation information carried in the second RRC Connection Reconfiguration message and releasing the connection with the source base station.
  • the TDM configuration of the time domain resources for the source base station and the target base station is performed in the UE, so that the UE can maintain the connection with the source base station during the handover process from the source base station to the target base station, thereby avoiding
  • the service interruption solves the problem that the UE with low connection support capability in the related technology cannot implement the non-disruptive handover.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain. a target base station TDM pattern for the radio resource of the target base station; the TDM allocation cancellation information includes at least one of the following information: a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the UE may determine the target base station TDM pattern according to the source base station TDM pattern (for example, the unoccupied time domain resource in the source base station TDM pattern may be used.
  • the UE may determine the source base station TDM pattern according to the target base station TDM pattern (for example, the unoccupied time domain in the target base station TDM pattern may be used) Resources as source base station TDM patterns).
  • the method includes at least one of the following: the foregoing TDM request information includes at least one of the following: a TDM request indication, a source base station TDM pattern for describing a radio resource for a source base station in a time domain, The target base station TDM pattern describing the radio resources of the target base station in the time domain; the TDM response information includes at least one of the following: a TDM response indication, a source base station TDM pattern for describing a radio resource for the source base station in the time domain, A target base station TDM pattern describing radio resources for a target base station in the time domain.
  • the source base station and the target base station can negotiate to determine respective TDM patterns.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a time base field for the source base station.
  • Radio resources the target base station TDM pattern is a binary bit string, Where 0 represents the radio resource for the target base station in the time domain, or 1 represents the radio resource for the target base station in the time domain.
  • FIG. 2 is a flowchart of a method for switching between two base stations according to an embodiment of the present disclosure. As shown in FIG. 2, the process includes the following steps:
  • Step S202 negotiating with the source base station to determine that the user equipment UE is allowed to maintain the connection with the source base station in the process of handover from the source base station to the target base station, and to allocate to the UE in the time domain for the source base station and the target base station.
  • Wireless resources are separated;
  • Step S204 Control, according to the negotiated information, that the UE is handed over by the source base station to the target base station.
  • the above operation may be performed on the target base station.
  • the negotiation between the target base station and the source base station can enable the UE to maintain the connection with the source base station during the handover process of the base station, thereby avoiding service interruption, and the radio resources for the source base station and the target base station in the time domain are Separately, the interference can be further avoided, and the problem that the UE with low connection capability and the non-disruptive handover cannot be realized in the related art can be effectively solved.
  • determining, by the source base station, the foregoing information includes: receiving a handover request message from a source base station, where the handover request message carries time division multiplexing TDM request information, where the TDM request information is used for requesting
  • the target base station allows the UE to maintain a connection with the source base station during handover by the source base station to the target base station, and distinguish the radio resources allocated to the UE for the source base station and the target base station in the time domain; according to the TDM request information to the source
  • the base station sends a handover request acknowledgement message, where the handover request acknowledgement message carries TDM response information, and the TDM response information is used to indicate that the request in the handover request message is agreed.
  • the foregoing step S204 may be used to control the handover of the UE by the source base station to the target base station by: receiving a radio resource control RRC connection reconfiguration complete message from the UE, where the RRC connection reconfiguration complete message is The UE performs TDM configuration according to the time division multiplexing TDM allocation information carried in the first RRC connection reconfiguration message from the source base station, where the TDM allocation information is used to distinguish the radio resources for the source base station and the target base station in the time domain. Transmitting the second RRC connection weight to the UE according to the foregoing RRC connection reconfiguration complete message And the TDM allocation cancellation information is used to indicate that the UE cancels the TDM configuration and releases the connection with the source base station.
  • the TDM configuration of the time domain resources for the source base station and the target base station is performed in the UE, so that the UE can maintain the connection with the source base station during the handover process from the source base station to the target base station, thereby avoiding
  • the service interruption solves the problem that the UE with low connection support capability in the related technology cannot implement the non-disruptive handover.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain.
  • a target base station TDM pattern for the radio resource of the target base station includes at least one of the following information: a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the method includes at least one of the following: the foregoing TDM request information includes at least one of the following: a TDM request indication, a source base station TDM pattern for describing a radio resource for a source base station in a time domain, a target base station TDM pattern for describing a radio resource of a target base station in a time domain; the TDM response information includes at least one of: a TDM response indication, a source base station TDM pattern for describing a radio resource for a source base station in a time domain, A target base station TDM pattern for describing radio resources for a target base station in the time domain.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a time base field for the source base station. Radio resource; the target base station TDM pattern is a binary bit string, where 0 represents a radio resource for the target base station in the time domain, or 1 represents a radio resource for the target base station in the time domain.
  • FIG. 3 is a flowchart of a method for switching between three base stations according to an embodiment of the present disclosure. As shown in FIG. 3, the process includes the following steps:
  • Step S302 Receive a first RRC connection reconfiguration message from a source base station, where the first RRC connection reconfiguration message carries time division multiplexing for distinguishing radio resources for the source base station and the target base station in the time domain. TDM allocation information;
  • Step S304 Perform TDM configuration according to the TDM allocation information, and send an RRC connection reconfiguration complete message to the target base station after completing the TDM configuration.
  • Step S306 the second RRC connection reconfiguration message sent by the target base station according to the RRC connection reconfiguration complete message is received, where the second RRC connection reconfiguration message carries TDM allocation cancellation information;
  • Step S308 cancel the TDM configuration according to the TDM allocation cancellation information and release the connection with the source base station.
  • the above operation may be performed by the UE.
  • the UE can be kept in connection with the source base station during the handover process from the source base station to the target base station, thereby avoiding the service.
  • the interruption solves the problem that the UE with low connection support capability in the related art cannot implement the non-disruptive handover.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain. a target base station TDM pattern for the radio resource of the target base station; the TDM allocation cancellation information includes a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a source base station in the time domain.
  • the radio resource; the target base station TDM pattern is a binary bit string, where 0 represents a radio resource for the target base station in the time domain, or 1 represents a radio resource for the target base station in the time domain.
  • FIG. 4 is a flowchart 1 of inter-base station handover according to an embodiment of the present disclosure. As shown in FIG. 4, the process includes the following steps:
  • the source eNB decides to handover the UE from the source cell (the source eNB) to the target cell (which belongs to the target eNB) (corresponding to the above-mentioned handover from the source base station to the target base station).
  • the source eNB sends a HANDOVER REQUEST (ie, the above-mentioned Handover Request) message to the target eNB, and carries the TDM request information (including the TDM request indication).
  • the target eNB receives the HANDOVER REQUEST message, and according to the TDM request information carried in the message, determines that the handover request requires the UE to maintain a connection with the source cell during the handover process (corresponding to the foregoing connection with the source base station), and
  • the radio resources allocated to the UE in the time domain are distinguished from the target cell by the source cell (corresponding to the above-mentioned radio resources allocated to the UE for the source base station and the target base station in the time domain) to avoid interference.
  • the target eNB agrees to the request, and returns a HANDOVER REQUEST ACKNOWLEDGE (corresponding to the Handover Request Acknowledge) message to the source eNB, carrying the TDM response information (including the target cell TDM pattern).
  • the source eNB receives the HANDOVER REQUEST ACKNOWLEDGE message, determines, according to the TDM response information carried in the message, that the target eNB has agreed to the handover request of the UE, and agrees to distinguish the radio resource allocated to the UE from the source cell and the target cell in the time domain. open.
  • the source eNB determines a source cell TDM pattern (corresponding to the source base station TDM pattern described above) according to the target cell TDM pattern included in the TDM response information (corresponding to the above-mentioned target base station TDM pattern) (the two patterns should avoid having the same portion as much as possible, Thereby avoiding interference).
  • the source cell sends an RRC Connection Reconfiguration message to the UE (corresponding to the foregoing source base station transmitting an RRC Connection Reconfiguration message to the UE, the RRC Connection Reconfiguration message corresponding to the first RRC connection reconfiguration message), and carrying the TDM allocation information (including the source cell) TDM pattern, target cell TDM pattern).
  • the UE receives the RRC Connection Reconfiguration (the first RRC connection reconfiguration) message, and performs radio resource configuration on the UE according to the TDM allocation information (including the source cell TDM pattern and the target cell TDM pattern) carried in the message. So that the radio resources allocated to the UE are distinguished from the target cell for the source cell to avoid interference. And the UE maintains a connection with the source eNB during the handover process.
  • the RRC Connection Reconfiguration the first RRC connection reconfiguration
  • the UE performs a random access procedure with the target cell.
  • the UE sends an RRC Connection Reconfiguration Complete message to the target cell.
  • the target eNB and the MME perform a path conversion process of the UE.
  • the target cell sends an RRC Connection Reconfiguration message to the UE (corresponding to the foregoing target base station sending an RRC Connection Reconfiguration message to the UE, where the RRC Connection Reconfiguration message corresponds to the second RRC connection reconfiguration message), and carrying the TDM allocation cancellation information. TDM allocation cancellation indication).
  • the UE receives the RRC Connection Reconfiguration ("second RRC connection reconfiguration" message), cancels the TDM configuration according to the TDM allocation cancellation information carried in the message, and releases the connection with the source eNB.
  • the UE sends an RRC Connection Reconfiguration Complete message to the target cell.
  • the target eNB sends a UE context release message to the source eNB.
  • the source eNB decides to handover the UE from the source cell (the source eNB) to the target cell (which belongs to the target eNB).
  • the source eNB sends a HANDOVER REQUEST message to the target eNB, carrying the TDM request information (including the TDM request indication, the source cell TDM pattern).
  • the target eNB receives the HANDOVER REQUEST message, and according to the message carrying the TDM request information, determines that the handover request requires the UE to maintain the connection with the source cell during the handover, and allocates the radio resource allocated to the UE to the source in the time domain.
  • the cell is distinguished from the target cell to avoid interference.
  • the target eNB agrees to the request, determines the target cell TDM pattern with reference to the source cell TDM pattern included in the TDM request information, and returns HANDOVER to the source eNB.
  • the REQUEST ACKNOWLEDGE message carries TDM response information (including the target cell TDM pattern).
  • the source eNB receives the HANDOVER REQUEST ACKNOWLEDGE message, determines that the target eNB has agreed to the handover request of the UE according to the TDM response information, and agrees to distinguish the radio resource allocated to the UE from the source cell and the target cell in the time domain. open.
  • the source eNB determines the source cell TDM pattern according to the target cell TDM pattern included in the TDM response information (the two patterns should avoid having the same portion as much as possible).
  • the source cell sends an RRC Connection Reconfiguration message to the UE, and carries the TDM allocation information (including the source cell TDM pattern).
  • the UE receives the RRC Connection Reconfiguration message, and determines the target cell TDM pattern according to the TDM allocation information (including the source cell TDM pattern) carried in the message. For example, the time domain resource that is not allocated to the UE in the TDM pattern of the source cell is used. Target cell TDM pattern), the radio resource is configured to the UE, so that the radio resource allocated to the UE is distinguished from the target cell by the source cell to avoid interference. And the UE maintains a connection with the source eNB during the handover process.
  • the UE performs a random access procedure with the target cell.
  • the UE sends an RRC Connection Reconfiguration Complete message to the target cell.
  • the target eNB and the MME perform a path conversion process of the UE.
  • the target cell sends an RRC Connection Reconfiguration message to the UE, and carries the TDM allocation cancellation information (TDM allocation cancellation indication).
  • the UE receives the RRC Connection Reconfiguration message, allocates cancellation information according to the TDM carried in the message, cancels the TDM configuration, and releases the connection with the source eNB.
  • the UE sends an RRC Connection Reconfiguration Complete message to the target cell.
  • the target eNB sends a UE context release message to the source eNB.
  • the foregoing embodiments can implement the purpose of non-stop handover of a base station by a normal UE or a UE supporting a lower connection capability.
  • FIG. 5 is a flowchart 2 of the inter-base station handover according to the embodiment of the present disclosure. As shown in FIG. 5, the process includes the following steps:
  • the source eNB decides to handover the UE from the source cell (the source eNB) to the target cell (which belongs to the target eNB).
  • the source eNB sends a HANDOVER REQUEST message to the target eNB, carrying the TDM request information (including the TDM request indication).
  • the target eNB receives the HANDOVER REQUEST message, and according to the message carrying the TDM request information, determines that the handover request requires the UE to maintain the connection with the source cell during the handover, and allocates the radio resource allocated to the UE to the source in the time domain.
  • the cell is distinguished from the target cell to avoid interference.
  • the target eNB agrees to the handover request, but does not agree to the TDM request, returns a HANDOVER REQUEST ACKNOWLEDGE message to the source eNB, and carries the TDM response information (including the TDM rejection indication).
  • the source eNB receives the HANDOVER REQUEST ACKNOWLEDGE message, and according to the TDM response information (including the TDM reject indication), the target eNB determines that the target eNB agrees to the handover request of the UE, but does not agree with the TDM request of the UE. Therefore, the source eNB decides to continue the normal handover procedure for the UE to ensure that the UE can obtain the timely handover. (In course, in the handover process, the UE disconnects the connection with the source cell first, and then performs the connection with the target cell. , will likely cause a brief business interruption in the UE). The source cell sends an RRC Connection Reconfiguration message to the UE.
  • the UE performs a random access procedure with the target cell.
  • the UE sends an RRC Connection Reconfiguration Complete message to the target cell.
  • the target eNB and the MME perform a path conversion process of the UE.
  • the target eNB sends a UE context release message to the source eNB.
  • an inter-base station switching device is also provided, which is used to implement the foregoing embodiments and preferred embodiments, and has not been described again.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural block diagram of a first inter-base station switching apparatus according to an embodiment of the present disclosure. As shown in FIG. 6, the apparatus includes a first negotiating module 62 and a first control module 64. The apparatus is described below:
  • the first negotiation module 62 is configured to negotiate with the target base station to determine information that allows the user equipment UE to maintain a connection with the source base station during handover by the source base station to the target base station, and for the source base station and the target base station in the time domain The radio resource allocated to the UE is separated.
  • the first control module 64 is connected to the first negotiation module 62, and is configured to control the UE to be handed over from the source base station to the target base station according to the negotiated information.
  • the first negotiation module 62 may determine the foregoing information by negotiating with the target base station by: sending a handover request (Handover Request) message to the target base station, where the handover request message carries a TDM request.
  • the TDM request information is used to request the target base station to allow the UE to maintain a connection with the source base station during handover by the source base station to the target base station, and to allocate to the source base station and the target base station in the time domain
  • a handover request acknowledgement Handover Request Acknowledge
  • the handover request acknowledgement message carries TDM response information, where the TDM response information is used to indicate that the handover is permitted. Request in the message.
  • the first control module 64 may control the UE to be handed over from the source base station to the target base station by: sending a first RRC connection reconfiguration message to the UE according to the negotiated message, where the An RRC connection reconfiguration message carries time division multiplexing TDM allocation information for distinguishing radio resources for the source base station and the target base station in the time domain, where the first RRC connection reconfiguration message is used to instruct the UE to perform the following operations according to the TDM allocation information.
  • the TDM configuration is performed according to the foregoing TDM allocation information, and after the TDM configuration is completed, the RRC connection reconfiguration complete message is sent to the target base station; and the second RRC connection reconfiguration message sent by the target base station according to the RRC connection reconfiguration complete message is received;
  • the TDM allocation cancellation information carried in the second RRC connection reconfiguration message cancels the TDM configuration and releases the connection with the source base station.
  • the TDM configuration of the time domain resources for the source base station and the target base station is performed in the UE, so that the UE can maintain the connection with the source base station during the handover process from the source base station to the target base station, thereby avoiding
  • the service interruption solves the problem that the UE with low connection support capability in the related technology cannot implement the non-disruptive handover.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain. a target base station TDM pattern for the radio resource of the target base station; the TDM allocation cancellation information includes a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the UE may determine the target base station TDM pattern according to the source base station TDM pattern (for example, the unoccupied time domain resource in the source base station TDM pattern may be used.
  • the UE may determine the source base station TDM pattern according to the target base station TDM pattern (for example, the unoccupied time domain in the target base station TDM pattern may be used) Resources as source base station TDM patterns).
  • At least one of the following is included: the foregoing TDM request information At least one of the following information is included: a TDM request indication, a source base station TDM pattern for describing radio resources for the source base station in the time domain, a target base station TDM pattern for describing radio resources for the target base station in the time domain; TDM response information At least one of the following information is included: a TDM response indication, a source base station TDM pattern for describing radio resources for the source base station in the time domain, and a target base station TDM pattern for describing radio resources for the target base station in the time domain.
  • the source base station and the target base station can negotiate to determine respective TDM patterns.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a time base field for the source base station. Radio resource; the target base station TDM pattern is a binary bit string, where 0 represents a radio resource for the target base station in the time domain, or 1 represents a radio resource for the target base station in the time domain.
  • FIG. 7 is a structural block diagram of a second inter-base station switching apparatus according to an embodiment of the present disclosure. As shown in FIG. 7, the apparatus includes a second negotiating module 72 and a second control module 74. The apparatus is described below:
  • the second negotiation module 72 is configured to negotiate with the source base station to determine information that allows the UE to maintain a connection with the source base station during handover by the source base station to the target base station, and allocates the source base station and the target base station in the time domain. Separating the radio resources of the UE; the second control module 74 is connected to the second negotiation module 72, and is configured to control the UE to be handed over from the source base station to the target base station according to the negotiated information.
  • the second negotiation module 72 may determine the foregoing information by negotiating with the source base station by: receiving a handover request message from the source base station, where the handover request message carries TDM request information, where The TDM request information is used to request the target base station to allow the UE to maintain a connection with the source base station during handover by the source base station to the target base station, and to distinguish the radio resources allocated to the UE for the source base station and the target base station in the time domain; The TDM request information sends a handover request acknowledgement message to the source base station, where the handover request acknowledgement message carries TDM response information, where the TDM response information is used to indicate that the request in the handover request message is agreed.
  • the foregoing second control module 74 may control the UE to be handed over from the source base station to the target base station by: receiving a radio resource control RRC connection reconfiguration complete message from the UE, where the RRC connection reconfiguration is performed.
  • the completion message is sent after the TDM configuration is performed by the UE according to the time division multiplexing TDM allocation information carried in the first RRC connection reconfiguration message from the source base station, where the TDM allocation information is used to distinguish the source base station and the target base station in the time domain.
  • the second RRC connection reconfiguration message is sent to the UE according to the foregoing RRC connection reconfiguration complete message, where the second RRC connection reconfiguration message carries TDM allocation cancellation information, where the TDM allocation cancellation information is used to indicate that the UE cancels
  • the TDM configures and releases the connection to the source base station.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain.
  • a target base station TDM pattern for the radio resource of the target base station includes at least one of the following information: a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the method includes at least one of the following: the foregoing TDM request information includes at least one of the following: a TDM request indication, a source base station TDM pattern for describing a radio resource for a source base station in a time domain, a target base station TDM pattern for describing a radio resource of a target base station in a time domain; the TDM response information includes at least one of: a TDM response indication, a source base station TDM pattern for describing a radio resource for a source base station in a time domain, A target base station TDM pattern for describing radio resources for a target base station in the time domain.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a time base field for the source base station. Radio resource; the target base station TDM pattern is a binary bit string, where 0 represents a radio resource for the target base station in the time domain, or 1 represents a radio resource for the target base station in the time domain.
  • the apparatus includes a first receiving module 82, a transmitting module 84, a second receiving module 86, and Release module 88, the device is described below:
  • the first receiving module 82 is configured to receive a first RRC connection reconfiguration message from the source base station, where the first RRC connection reconfiguration message carries a radio for distinguishing between the source base station and the target base station in the time domain.
  • the time division multiplexing TDM allocation information of the resource; the sending module 84 is connected to the first receiving module 82, configured to perform TDM configuration according to the TDM allocation information, and send an RRC connection reconfiguration complete message to the target base station after completing the TDM configuration.
  • the second receiving module 86 is connected to the foregoing sending module 84, and is configured to receive the second RRC connection reconfiguration message sent by the target base station according to the RRC connection reconfiguration complete message, where the second RRC connection reconfiguration message carries The TDM allocates cancellation information; the release module 88 is coupled to the second receiving module 86, and is configured to cancel the TDM configuration and release the connection with the source base station according to the TDM allocation cancellation information.
  • the foregoing TDM allocation information includes at least one of the following: a source base station TDM pattern for describing a radio resource for a source base station in a time domain, used to describe the time domain. a target base station TDM pattern for the radio resource of the target base station; the TDM allocation cancellation information includes a TDM allocation cancellation indication, and new radio resource information configured for the UE.
  • the source base station TDM pattern is a binary bit string, where 0 represents a radio resource for the source base station in the time domain, or 1 represents a source base station in the time domain.
  • the radio resource; the target base station TDM pattern is a binary bit string, where 0 represents a radio resource for the target base station in the time domain, or 1 represents a radio resource for the target base station in the time domain.
  • a source base station is further provided, where the source base station has a first processor performing a negotiation function and a second processor performing a control function, wherein the first processor and the foregoing
  • the function of a negotiation module is equivalent, and the second processor is equivalent to the function of the first control module described above.
  • a target base station is further provided, the target base station has a third processor performing a negotiation function and a fourth processor performing a control function, wherein the third base station The processor is equivalent to the function of the second negotiation module described above, and the fourth processor is equivalent to the function of the second control module described above.
  • an inter-base station handover system comprising the source base station described above and the target base station described above.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all implemented by the same processor; or, the above modules are arbitrary.
  • the form of the combination is implemented by different processors.
  • Embodiments of the present disclosure also provide a storage medium.
  • the foregoing storage medium includes a stored program, and the program executes the steps in any one of the foregoing method embodiments.
  • the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM).
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • the processor performs the steps in the foregoing method embodiments according to the stored program code in the storage medium.
  • modules or steps of the present disclosure described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module. As such, the disclosure is not limited to any specific combination of hardware and software.
  • the method and apparatus for inter-base station handover provided by the embodiments of the present disclosure have the following beneficial effects: the negotiation between the source base station and the target base station can enable the UE to maintain the connection with the source base station during the handover process of the base station, thereby avoiding The service is interrupted, and the radio resources of the source base station and the target base station are separated in the time domain, and the interference can be further avoided, which effectively solves the problem that the UE with low connection support capability cannot implement the non-disruptive handover in the related art. problem.

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Abstract

本公开提供了一种基站间切换方法及装置，其中，该方法包括：与目标基站协商确定如下信息：允许UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；根据协商的上述信息控制UE由源基站切换到目标基站。通过本公开中的实施例，解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。

Description

基站间切换方法及装置 技术领域
本公开涉及通信领域，具体而言，涉及一种基站间切换方法及装置。
背景技术
长期演进(Long Term Evolution，简称为LTE)网络包括演进的通用陆地无线接入网(Evolved Universal Terrestrial Radio Access Network，简称为E-UTRAN)及对应的核心网(Core Network，简称为CN)。E-UTRAN包括演进基站(evolved Node B，简称为eNB)。CN包括移动管理实体(Mobile Management Entity，简称为MME)和服务网关(Serving Gateway，简称为S-GW)等。eNB和CN之间通过S1接口连接，eNB之间可通过X2接口连接。一个eNB可以管理一个或多个小区(Cell)。用户设备(User Equipment，简称为UE)与小区之间的接口称为Uu口(或称空口)。
目前LTE系统中，UE在从一个eNB的小区切换到另一个eNB的小区的过程中，会先断开与源小区的连接(即，断开与源基站的连接)，再进行与目标小区的连接(即，进行与目标基站的连接)，这将导致UE出现短时间的业务中断。一种避免UE出现短时间业务中断的方法是，UE在切换过程中保持与源小区的连接直到UE与目标小区成功建立连接后。但这通常要求UE具备支持双连接或多连接的能力，比如对于处在单连接的UE需要具备支持双连接的能力，对于处在双连接的UE需要具备支持三连接的能力。这对于普通UE(例如，仅具备支持单连接能力的UE)而言，就无法避免切换过程中的业务中断了。
因此，如何使支持连接能力较低的UE能够实现无中断的切换，在相关技术中并未提出有效地解决方案。
公开内容
本公开实施例提供了一种基站间切换方法及装置，以至少解决相关技 术中存在的支持连接能力较低的UE无法实现无中断切换基站的问题。
根据本公开的一个实施例，提供了一种基站间切换方法，包括：与目标基站协商确定如下信息：允许用户设备UE在由源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
根据本公开的一个实施例，还提供了一种基站间切换方法，包括：与源基站协商确定如下信息：允许用户设备UE在由所述源基站切换至目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
根据本公开的一个实施例，还提供了一种基站间切换装置，包括：第一协商模块，设置为与目标基站协商确定如下信息：允许用户设备UE在由源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；第一控制模块，设置为根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
根据本公开的一个实施例，还提供了一种基站间切换装置，包括：第二协商模块，设置为与源基站协商确定如下信息：允许用户设备UE在由所述源基站切换至目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；第二控制模块，设置为根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
根据本公开的又一个实施例，还提供了一种存储介质。该存储介质包括存储的程序，其中，所述程序运行时执行上述任一项所述的方法。
通过本公开中的实施例，通过源基站和目标基站的协商可以使得UE在进行基站的切换过程中保持与源基站的连接，从而避免了业务中断，并 且在时域上针对源基站和目标基站的无线资源是分开的，还可以进一步避免干扰，有效的解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是根据本公开实施例的第一种基站间切换方法的流程图；
图2是根据本公开实施例的第二种基站间切换方法的流程图；
图3是根据本公开实施例的第三种基站间切换方法的流程图；
图4是根据本公开实施例的基站间切换流程图一；
图5是根据本公开实施例的基站间切换流程图二；
图6是根据本公开实施例的第一种基站间切换装置的结构框图；
图7是根据本公开实施例的第二种基站间切换装置的结构框图；
图8是根据本公开实施例的第三种基站间切换装置的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本公开中的实施例可以应用于LTE系统中。
在本实施例中提供了一种基站间切换方法，图1是根据本公开实施例的第一种基站间切换方法的流程图，如图1所示，该流程包括如下步骤：
步骤S102，与目标基站协商确定如下信息：允许用户设备(User  Equipment，简称为UE)在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；
步骤S104，根据协商的上述信息控制UE由源基站切换到目标基站。
其中，执行上述操作的可以是源基站。
由上述步骤可知，通过源基站和目标基站的协商可以使得UE在进行基站的切换过程中保持与源基站的连接，从而避免了业务中断，并且在时域上针对源基站和目标基站的无线资源是分开的，还可以进一步避免干扰，有效的解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，与上述目标基站协商确定上述信息包括：向目标基站发送切换请求(Handover Request)消息，其中，该切换请求消息中携带时分复用(Time Division Multiplexing，简称为TDM)请求信息，该TDM请求信息用于请求目标基站允许上述UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；接收上述目标基站根据TDM请求信息返回的切换请求确认(Handover Request Acknowledge)消息，其中，该切换请求确认消息中携带TDM响应信息，该TDM响应信息用于指示同意上述切换请求消息中的请求。
在一个可选地实施例中，上述步骤S104可以通过如下方式控制UE由源基站切换到目标基站：根据协商的上述消息向上述UE发送第一无线资源控制(Radio Resource Control，简称为RRC)连接重构消息(RRC Connection Reconfiguration)，其中，该第一RRC连接重构消息中携带用于区分时域上针对源基站和目标基站的无线资源的时分复用TDM分配信息，该第一RRC连接重构消息用于指示UE根据TDM分配信息执行以下操作：根据上述TDM分配信息进行TDM配置，并在完成TDM配置后向目标基站发送RRC连接重构完成消息；接收上述目标基站根据RRC连接 重构完成消息发送的第二RRC连接重构消息；根据该第二RRC连接重构消息(RRC Connection Reconfiguration)中携带的TDM分配取消信息取消TDM配置并释放与源基站的连接。在本实施例中，由于在UE中进行了针对源基站和目标基站的时域资源的TDM配置，可以使得UE能在进行源基站到目标基站的切换过程中保持与源基站的连接，从而避免了业务中断，解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括以下信息至少之一：TDM分配取消指示，为UE配置的新的无线资源信息。在本实施例中，当上述TDM分配信息中仅包括源基站TDM图案时，UE可以根据该源基站TDM图案确定目标基站TDM图案(例如，可以将源基站TDM图案中未被占用的时域资源作为目标基站TDM图案)；当上述TDM分配信息中仅包括目标基站TDM图案时，UE可以根据该目标基站TDM图案确定源基站TDM图案(例如，可以将目标基站TDM图案中未被占用的时域资源作为源基站TDM图案)。
在一个可选的实施例中，包括以下至少之一：上述TDM请求信息中包括以下信息至少之一：TDM请求指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案；TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案。在本实施例中，源基站和目标基站可以协商确定各自的TDM图案。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串， 其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
在本实施例中还提供了一种基站间切换方法，图2是根据本公开实施例的第二种基站间切换方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，与源基站协商确定如下信息：允许用户设备UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对上述源基站和目标基站将分配给UE的无线资源区分开；
步骤S204，根据协商的上述信息控制UE由源基站切换到目标基站。
其中，执行上述操作的可以是目标基站。
通过上述步骤，通过目标基站和源基站的协商可以使得UE在进行基站的切换过程中保持与源基站的连接，从而避免了业务中断，并且在时域上针对源基站和目标基站的无线资源是分开的，还可以进一步避免干扰，有效的解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，与上述源基站协商确定上述信息包括：接收来自源基站的切换请求消息，其中，该切换请求消息中携带时分复用TDM请求信息，该TDM请求信息用于请求目标基站允许UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；根据上述TDM请求信息向源基站发送切换请求确认消息，其中，该切换请求确认消息中携带TDM响应信息，该TDM响应信息用于指示同意上述切换请求消息中的请求。
在一个可选的实施例中，上述步骤S204可以通过如下方式控制UE由源基站切换到目标基站：接收来自UE的无线资源控制RRC连接重构完成消息，其中，该RRC连接重构完成消息为UE根据来自源基站的第一RRC连接重构消息中携带的时分复用TDM分配信息进行了TDM配置后发送的，该TDM分配信息用于在时域上区分针对源基站和目标基站的无线资源；根据上述RRC连接重构完成消息向UE发送第二RRC连接重 构消息，其中，该第二RRC连接重构消息中携带TDM分配取消信息，TDM分配取消信息用于指示UE取消TDM配置并释放与源基站的连接。在本实施例中，由于在UE中进行了针对源基站和目标基站的时域资源的TDM配置，可以使得UE能在进行源基站到目标基站的切换过程中保持与源基站的连接，从而避免了业务中断，解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括以下信息至少之一：TDM分配取消指示，为UE配置的新的无线资源信息。
在一个可选的实施例中，包括以下至少之一：上述TDM请求信息中包括以下信息至少之一：TDM请求指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串，其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
在本实施例中还提供了一种基站间切换方法，图3是根据本公开实施例的第三种基站间切换方法的流程图，如图3所示，该流程包括如下步骤：
步骤S302，接收来自源基站的第一无线资源控制RRC连接重构消息，其中，该第一RRC连接重构消息中携带用于区分时域上针对源基站和目标基站的无线资源的时分复用TDM分配信息；
步骤S304，根据上述TDM分配信息进行TDM配置，并在完成上述TDM配置后向目标基站发送RRC连接重构完成消息；
步骤S306，接收上述目标基站根据RRC连接重构完成消息下发的第二RRC连接重构消息，其中，该第二RRC连接重构消息中携带TDM分配取消信息；
步骤S308，根据上述TDM分配取消信息取消TDM配置并释放与源基站的连接。
其中，执行上述操作的可以是UE。
通过上述步骤，由于在UE中进行了针对源基站和目标基站的时域资源的TDM配置，可以使得UE能在进行源基站到目标基站的切换过程中保持与源基站的连接，从而避免了业务中断，解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括TDM分配取消指示，为UE配置的新的无线资源信息。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对上述源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串，其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
下面结合具体实施例从整体对基站间切换的方法进行说明：
实施例1
图4是根据本公开实施例的基站间切换流程图一，如图4所示，该流程包括如下步骤：
S1、源eNB决定将UE从源小区(属源eNB)切换到目标小区(属目标eNB)(对应于上述的从源基站切换到目标基站)。源eNB向目标eNB发送HANDOVER REQUEST(即，上述的Handover Request)消息，携带TDM请求信息(包括TDM请求指示)。
S2、目标eNB收到HANDOVER REQUEST消息，根据消息中携带的TDM请求信息，确定该切换请求要求UE在切换过程中保持与源小区的连接(对应于上述的保持与源基站的连接)，并且在时域上将分配给UE的无线资源针对源小区与目标小区区分开(对应于上述的在时域上针对源基站和目标基站将分配给UE的无线资源区分开)，以避免干扰。目标eNB同意该请求，向源eNB回HANDOVER REQUEST ACKNOWLEDGE(对应于上述的Handover Request Acknowledge)消息，携带TDM响应信息(包括目标小区TDM图案)。
S3、源eNB收到HANDOVER REQUEST ACKNOWLEDGE消息，根据消息中携带的TDM响应信息，确定目标eNB已同意UE的切换请求，并且同意在时域上将分配给UE的无线资源针对源小区与目标小区区分开。源eNB根据TDM响应信息中包括的目标小区TDM图案(对应于上述的目标基站TDM图案)确定源小区TDM图案(对应于上述的源基站TDM图案)(两个图案应尽量避免有相同的部分，从而避免干扰)。源小区向UE发送RRC Connection Reconfiguration消息(对应于上述的源基站向UE发送RRC Connection Reconfiguration消息，该RRC Connection Reconfiguration消息对应于上述的第一RRC连接重构消息)，携带TDM分配信息(包括源小区TDM图案、目标小区TDM图案)。
S4、UE收到RRC Connection Reconfiguration(即，上述的第一RRC连接重构)消息，根据消息中携带的TDM分配信息(包括源小区TDM图案、目标小区TDM图案)，对UE进行无线资源的配置，以使分配给UE的无线资源针对源小区与目标小区区分开，以避免干扰。并且UE在切换过程中保持与源eNB的连接。
S5、UE与目标小区进行随机接入过程。
S6、UE向目标小区发送RRC Connection Reconfiguration Complete消息。
S7、目标eNB与MME进行UE的路径转换过程。
S8、目标小区向UE发送RRC Connection Reconfiguration消息(对应于上述的目标基站向UE发送RRC Connection Reconfiguration消息，该RRC Connection Reconfiguration消息对应于上述的第二RRC连接重构消息)，携带TDM分配取消信息(TDM分配取消指示)。
S9、UE收到RRC Connection Reconfiguration(即，上述的第二RRC连接重构)消息，根据消息中携带的TDM分配取消信息，取消TDM配置，并且释放与源eNB的连接。
S10、UE向目标小区发送RRC Connection Reconfiguration Complete消息。
S11、目标eNB向源eNB发送UE上下文释放消息。
实施例2
该实施例也可以参考图4进行说明：
该实施例包括如下步骤：
S1、源eNB决定将UE从源小区(属源eNB)切换到目标小区(属目标eNB)。源eNB向目标eNB发送HANDOVER REQUEST消息，携带TDM请求信息(包括TDM请求指示、源小区TDM图案)。
S2、目标eNB收到HANDOVER REQUEST消息，根据消息中携带有TDM请求信息，确定该切换请求要求UE在切换过程中保持与源小区的连接，并且在时域上将分配给UE的无线资源针对源小区与目标小区区分开，以避免干扰。目标eNB同意该请求，参考TDM请求信息中包括的源小区TDM图案确定目标小区TDM图案，向源eNB回HANDOVER  REQUEST ACKNOWLEDGE消息，携带TDM响应信息(包括目标小区TDM图案)。
S3、源eNB收到HANDOVER REQUEST ACKNOWLEDGE消息，根据消息中携带有TDM响应信息，确定目标eNB已同意UE的切换请求，并且同意在时域上将分配给UE的无线资源针对源小区与目标小区区分开。源eNB根据TDM响应信息中包括的目标小区TDM图案确定源小区TDM图案(两个图案应尽量避免有相同的部分)。源小区向UE发送RRC Connection Reconfiguration消息，携带TDM分配信息(包括源小区TDM图案)。
S4、UE收到RRC Connection Reconfiguration消息，根据消息中携带的TDM分配信息(包括源小区TDM图案)，确定目标小区TDM图案(如将源小区TDM图案中未分配给UE的时域资源都用作目标小区TDM图案)，对UE进行无线资源的配置，以使分配给UE的无线资源针对源小区与目标小区区分开，以避免干扰。并且UE在切换过程中保持与源eNB的连接。
S5、UE与目标小区进行随机接入过程。
S6、UE向目标小区发送RRC Connection Reconfiguration Complete消息。
S7、目标eNB与MME进行UE的路径转换过程。
S8、目标小区向UE发送RRC Connection Reconfiguration消息，携带TDM分配取消信息(TDM分配取消指示)。
S9、UE收到RRC Connection Reconfiguration消息，根据消息中携带的TDM分配取消信息，取消TDM配置，并且释放与源eNB的连接。
S10、UE向目标小区发送RRC Connection Reconfiguration Complete消息。
S11、目标eNB向源eNB发送UE上下文释放消息。
通过上述的实施例可以实现普通UE或支持连接能力较低的UE实现无中断切换基站的目的。
实施例3
该实施例主要针对目标基站拒绝源基站的请求进行说明，图5是根据本公开实施例的基站间切换流程图二，如图5所示，该流程包括如下步骤：
S1、源eNB决定将UE从源小区(属源eNB)切换到目标小区(属目标eNB)。源eNB向目标eNB发送HANDOVER REQUEST消息，携带TDM请求信息(包括TDM请求指示)。
S2、目标eNB收到HANDOVER REQUEST消息，根据消息中携带有TDM请求信息，确定该切换请求要求UE在切换过程中保持与源小区的连接，并且在时域上将分配给UE的无线资源针对源小区与目标小区区分开，以避免干扰。目标eNB同意该切换请求，但不同意该TDM请求，向源eNB回HANDOVER REQUEST ACKNOWLEDGE消息，携带TDM响应信息(包括TDM拒绝指示)。
S3、源eNB收到HANDOVER REQUEST ACKNOWLEDGE消息，根据消息中携带有TDM响应信息(包括TDM拒绝指示)，确定目标eNB虽然同意UE的切换请求，但不同意UE的TDM请求。于是、源eNB决定对该UE按一般的切换流程继续进行，以保证UE能得到及时的切换(当然在该切换过程中，UE会先断开与源小区的连接，再进行与目标小区的连接，将很可能会导致UE出现短暂的业务中断)。源小区向UE发送RRC Connection Reconfiguration消息。
S4、UE与目标小区进行随机接入过程。
S5、UE向目标小区发送RRC Connection Reconfiguration Complete消息。
S6、目标eNB与MME进行UE的路径转换过程。
S7、目标eNB向源eNB发送UE上下文释放消息。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
在本实施例中还提供了一种基站间切换装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图6是根据本公开实施例的第一种基站间切换装置的结构框图，如图6所示，该装置包括第一协商模块62和第一控制模块64，下面对该装置进行说明：
第一协商模块62，设置为与目标基站协商确定如下信息：允许用户设备UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；第一控制模块64，连接至上述第一协商模块62，设置为根据协商的上述信息控制UE由源基站切换到目标基站。
在一个可选的实施例中，上述第一协商模块62可以通过如下方式与上述目标基站协商确定上述信息：向目标基站发送切换请求(Handover Request)消息，其中，该切换请求消息中携带TDM请求信息，该TDM请求信息用于请求目标基站允许上述UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给 UE的无线资源区分开；接收上述目标基站根据TDM请求信息返回的切换请求确认(Handover Request Acknowledge)消息，其中，该切换请求确认消息中携带TDM响应信息，该TDM响应信息用于指示同意上述切换请求消息中的请求。
在一个可选地实施例中，上述第一控制模块64可以通过如下方式控制UE由源基站切换到目标基站：根据协商的上述消息向上述UE发送第一RRC连接重构消息，其中，该第一RRC连接重构消息中携带用于区分时域上针对源基站和目标基站的无线资源的时分复用TDM分配信息，该第一RRC连接重构消息用于指示UE根据TDM分配信息执行以下操作：根据上述TDM分配信息进行TDM配置，并在完成TDM配置后向目标基站发送RRC连接重构完成消息；接收上述目标基站根据RRC连接重构完成消息发送的第二RRC连接重构消息；根据该第二RRC连接重构消息中携带的TDM分配取消信息取消TDM配置并释放与源基站的连接。在本实施例中，由于在UE中进行了针对源基站和目标基站的时域资源的TDM配置，可以使得UE能在进行源基站到目标基站的切换过程中保持与源基站的连接，从而避免了业务中断，解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括TDM分配取消指示，为UE配置的新的无线资源信息。在本实施例中，当上述TDM分配信息中仅包括源基站TDM图案时，UE可以根据该源基站TDM图案确定目标基站TDM图案(例如，可以将源基站TDM图案中未被占用的时域资源作为目标基站TDM图案)；当上述TDM分配信息中仅包括目标基站TDM图案时，UE可以根据该目标基站TDM图案确定源基站TDM图案(例如，可以将目标基站TDM图案中未被占用的时域资源作为源基站TDM图案)。
在一个可选的实施例中，包括以下至少之一：上述TDM请求信息中 包括以下信息至少之一：TDM请求指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案；TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案。在本实施例中，源基站和目标基站可以协商确定各自的TDM图案。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串，其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
图7是根据本公开实施例的第二种基站间切换装置的结构框图，如图7所示，该装置包括第二协商模块72和第二控制模块74，下面对该装置进行说明：
第二协商模块72，设置为与源基站协商确定如下信息：允许UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对上述源基站和目标基站将分配给UE的无线资源区分开；第二控制模块74，连接至上述第二协商模块72，设置为根据协商的上述信息控制UE由源基站切换到目标基站。
在一个可选的实施例中，上述第二协商模块72可以通过如下方式与上述源基站协商确定上述信息：接收来自源基站的切换请求消息，其中，该切换请求消息中携带TDM请求信息，该TDM请求信息用于请求目标基站允许UE在由源基站切换至目标基站的过程中保持与源基站的连接，并且在时域上针对源基站和目标基站将分配给UE的无线资源区分开；根据上述TDM请求信息向源基站发送切换请求确认消息，其中，该切换请求确认消息中携带TDM响应信息，该TDM响应信息用于指示同意上述切换请求消息中的请求。
在一个可选的实施例中，上述第二控制模块74可以通过如下方式控制UE由源基站切换到目标基站：接收来自UE的无线资源控制RRC连接重构完成消息，其中，该RRC连接重构完成消息为UE根据来自源基站的第一RRC连接重构消息中携带的时分复用TDM分配信息进行了TDM配置后发送的，该TDM分配信息用于在时域上区分针对源基站和目标基站的无线资源；根据上述RRC连接重构完成消息向UE发送第二RRC连接重构消息，其中，该第二RRC连接重构消息中携带TDM分配取消信息，该TDM分配取消信息用于指示UE取消TDM配置并释放与源基站的连接。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括以下信息至少之一：TDM分配取消指示，为UE配置的新的无线资源信息。
在一个可选的实施例中，包括以下至少之一：上述TDM请求信息中包括以下信息至少之一：TDM请求指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对源基站的无线资源的源基站TDM图案、用于描述时域上针对目标基站的无线资源的目标基站TDM图案。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串，其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
图8是根据本公开实施例的第三种基站间切换装置的结构框图，如图8所示，该装置包括第一接收模块82、发送模块84、第二接收模块86和 释放模块88，下面对该装置进行说明：
第一接收模块82，设置为接收来自源基站的第一无线资源控制RRC连接重构消息，其中，该第一RRC连接重构消息中携带用于区分时域上针对源基站和目标基站的无线资源的时分复用TDM分配信息；发送模块84，连接至上述第一接收模块82，设置为根据上述TDM分配信息进行TDM配置，并在完成上述TDM配置后向目标基站发送RRC连接重构完成消息；第二接收模块86，连接至上述发送模块84，设置为接收上述目标基站根据RRC连接重构完成消息下发的第二RRC连接重构消息，其中，该第二RRC连接重构消息中携带TDM分配取消信息；释放模块88，连接至上述第二接收模块86，设置为根据上述TDM分配取消信息取消TDM配置并释放与源基站的连接。
在一个可选的实施例中，包括以下至少之一：上述TDM分配信息包括以下信息至少之一：用于描述时域上针对源基站的无线资源的源基站TDM图案，用于描述时域上针对目标基站的无线资源的目标基站TDM图案；上述TDM分配取消信息包括TDM分配取消指示，为UE配置的新的无线资源信息。
在一个可选的实施例中，包括以下至少之一：上述源基站TDM图案为二进制位串，其中，0代表时域上针对上述源基站的无线资源，或者，1代表时域上针对源基站的无线资源；上述目标基站TDM图案为二进制位串，其中，0代表时域上针对目标基站的无线资源，或者，1代表时域上针对目标基站的无线资源。
在一个可选的实施例中，还提供了一种源基站，该源基站具有执行协商功能的第一处理器和执行控制功能的第二处理器，其中，该第一处理器与上述的第一协商模块的功能相当，该第二处理器与上述的第一控制模块的功能相当。
在一个可选的实施例中，还提供了一种目标基站，该目标基站具有执行协商功能的第三处理器和执行控制功能的第四处理器，其中，该第三处 理器与上述的第二协商模块的功能相当，该第四处理器与上述的第二控制模块的功能相当。
在一个可选的实施例中，还提供了一种基站间切换系统，该系统包括上述的源基站以及上述的目标基站。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均由同一处理器来实现；或者，上述各个模块以任意组合的形式分别由不同的处理器来实现。
本公开的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质包括存储的程序，该程序运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行上述方法实施例中的步骤。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于 本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
工业实用性
如上所述，本公开实施例提供的一种基站间切换方法及装置具有以下有益效果：通过源基站和目标基站的协商可以使得UE在进行基站的切换过程中保持与源基站的连接，从而避免了业务中断，并且在时域上针对源基站和目标基站的无线资源是分开的，还可以进一步避免干扰，有效的解决了相关技术中存在的支持连接能力较低的UE无法实现无中断切换的问题。

Claims (17)

  1. 一种基站间切换方法，包括：
    与目标基站协商确定如下信息：允许用户设备UE在由源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
  2. 根据权利要求1所述的方法，其中，与所述目标基站协商确定所述信息包括：
    向所述目标基站发送切换请求消息，其中，所述切换请求消息中携带时分复用TDM请求信息，所述TDM请求信息用于请求所述目标基站允许所述UE在由所述源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    接收所述目标基站根据所述TDM请求信息返回的切换请求确认消息，其中，所述切换请求确认消息中携带TDM响应信息，所述TDM响应信息用于指示同意所述切换请求消息中的请求。
  3. 根据权利要求1或2所述的方法，其中，根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站包括：
    根据协商的所述信息向所述UE发送第一无线资源控制RRC连接重构消息，其中，所述第一RRC连接重构消息中携带用于在时域上区分针对所述源基站和所述目标基站的无线资源的时分复用TDM分配信息，所述第一RRC连接重构消息用于指示所述UE根据所述TDM分配信息执行以下操作：
    根据所述TDM分配信息进行TDM配置，并在完成所述TDM配置后向所述目标基站发送RRC连接重构完成消息；
    接收所述目标基站根据所述RRC连接重构完成消息发送的第二RRC连接重构消息；
    根据所述第二RRC连接重构消息中携带的TDM分配取消信息取消所述TDM配置并释放与所述源基站的连接。
  4. 根据权利要求3所述的方法，其中，包括以下至少之一：
    所述TDM分配信息包括以下信息至少之一：用于描述时域上针对所述源基站的无线资源的源基站TDM图案，用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案；
    所述TDM分配取消信息包括以下信息至少之一：TDM分配取消指示，为所述UE配置的新的无线资源信息。
  5. 根据权利要求2所述的方法，其中，包括以下至少之一：
    所述TDM请求信息中包括以下信息至少之一：TDM请求指示、用于描述时域上针对所述源基站的无线资源的源基站TDM图案、用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案；
    所述TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对所述源基站的无线资源的源基站TDM图案、用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案。
  6. 根据权利要求4或5所述的方法，其中，包括以下至少之一：
    所述源基站TDM图案为二进制位串，其中，0代表时域上针对所述源基站的无线资源，或者，1代表时域上针对所述源基站的无线资源；，
    所述目标基站TDM图案为二进制位串，其中，0代表时域上针对所述目标基站的无线资源，或者，1代表时域上针对所述目标基站的无线资源。
  7. 一种基站间切换方法，包括：
    与源基站协商确定如下信息：允许用户设备UE在由所述源基站切换至目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
  8. 根据权利要求7所述的方法，其中，与所述源基站协商确定所述信息包括：
    接收来自所述源基站的切换请求消息，其中，所述切换请求消息中携带时分复用TDM请求信息，所述TDM请求信息用于请求所述目标基站允许所述UE在由所述源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    根据所述TDM请求信息向所述源基站发送切换请求确认消息，其中，所述切换请求确认消息中携带TDM响应信息，所述TDM响应信息用于指示同意所述切换请求消息中的请求。
  9. 根据权利要求7或8所述的方法，其中，根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站包括：
    接收来自所述UE的无线资源控制RRC连接重构完成消息，其中，所述RRC连接重构完成消息为所述UE根据来自源基站的第一RRC连接重构消息中携带的时分复用TDM分配信息进行了TDM配置后发送的，所述TDM分配信息用于在时域上区分针对所述源基站和目标基站的无线资源；
    根据所述RRC连接重构完成消息向所述UE发送第二RRC连接重构消息，其中，所述第二RRC连接重构消息中携带TDM分配取消信息，所述TDM分配取消信息用于指示所述UE取消所述TDM配置并释放与所述源基站的连接。
  10. 根据权利要求9所述的方法，其中，包括以下至少之一：
    所述TDM分配信息包括以下信息至少之一：用于描述时域上针对所述源基站的无线资源的源基站TDM图案，用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案；
    所述TDM分配取消信息包括以下信息至少之一：TDM分配取消指示，为所述UE配置的新的无线资源信息。
  11. 根据权利要求8所述的方法，其中，包括以下至少之一：
    所述TDM请求信息中包括以下信息至少之一：TDM请求指示、用于描述时域上针对所述源基站的无线资源的源基站TDM图案、用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案；
    所述TDM响应信息包括以下信息至少之一：TDM响应指示、用于描述时域上针对所述源基站的无线资源的源基站TDM图案、用于描述时域上针对所述目标基站的无线资源的目标基站TDM图案。
  12. 根据权利要求10或11所述的方法，其中，包括以下至少之一：
    所述源基站TDM图案为二进制位串，其中，0代表时域上针对所述源基站的无线资源，或者，1代表时域上针对所述源基站的无线资源；
    所述目标基站TDM图案为二进制位串，其中，0代表时域上针对所述目标基站的无线资源，或者，1代表时域上针对所述目标基站的无线资源。
  13. 一种基站间切换装置，包括：
    第一协商模块，设置为与目标基站协商确定如下信息：允许用户设备UE在由源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    第一控制模块，设置为根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
  14. 根据权利要求13所述的装置，其中，所述第一协商模块通过如下方式与所述目标基站协商确定所述信息：
    向所述目标基站发送切换请求消息，其中，所述切换请求消息中携带时分复用TDM请求信息，所述TDM请求信息用于请求所述目标基站允许所述UE在由所述源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    接收所述目标基站根据所述TDM请求信息返回的切换请求确认消息，其中，所述切换请求确认消息中携带TDM响应信息，所述TDM响应信息用于指示同意所述切换请求消息中的请求。
  15. 一种基站间切换装置，包括：
    第二协商模块，设置为与源基站协商确定如下信息：允许用户设备UE在由所述源基站切换至目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    第二控制模块，设置为根据协商的所述信息控制所述UE由所述源基站切换到所述目标基站。
  16. 根据权利要求15所述的装置，其中，所述第二协商模块通过如下方式与所述源基站协商确定所述信息：
    接收来自所述源基站的切换请求消息，其中，所述切换请求消息中携带时分复用TDM请求信息，所述TDM请求信息用于请求所述目标基站允许所述UE在由所述源基站切换至所述目标基站的过程中保持与所述源基站的连接，并且在时域上针对所述源基站和所述目标基站将分配给所述UE的无线资源区分开；
    根据所述TDM请求信息向所述源基站发送切换请求确认消息，其中，所述切换请求确认消息中携带TDM响应信息，所述TDM响应信息用于指示同意所述切换请求消息中的请求。
  17. 一种存储介质，所述存储介质包括存储的程序，其中，所述程序运行时执行权利要求1至12中任一项所述的方法。
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