WO2012162961A1 - Procédé de gestion de technologie csfb, et dispositif et système associés - Google Patents

Procédé de gestion de technologie csfb, et dispositif et système associés Download PDF

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Publication number
WO2012162961A1
WO2012162961A1 PCT/CN2011/078841 CN2011078841W WO2012162961A1 WO 2012162961 A1 WO2012162961 A1 WO 2012162961A1 CN 2011078841 W CN2011078841 W CN 2011078841W WO 2012162961 A1 WO2012162961 A1 WO 2012162961A1
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WO
WIPO (PCT)
Prior art keywords
utran
user equipment
request message
geran
reselection information
Prior art date
Application number
PCT/CN2011/078841
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English (en)
Chinese (zh)
Inventor
陈中平
朱奋勤
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/078841 priority Critical patent/WO2012162961A1/fr
Priority to CN2011800017083A priority patent/CN103081535A/zh
Publication of WO2012162961A1 publication Critical patent/WO2012162961A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • H04W36/00224—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a processing method, apparatus, and system for circuit switching fallback. Background technique
  • E-UTRAN Evolved
  • ESC Evolved Packet Core
  • UE User Equipment
  • E-UTRAN Universal Mobile Telecommunication System Territorial Radio Access Network
  • GERAN GSM EDGE Radio Access Network
  • GSM Global Mobile Telecommunications Access Network
  • the EDGE is the GSM Evolution Enhanced Data Rate for GSM Evolution
  • the access method of the GERAN is called the Global Mobile Telecommunications Access Network in the present application.
  • the physical network element in the E-UTRAN may be an evolved Node B (eNB) or a Home eNB (Home eNode B, HeNB).
  • Figure 1 is a current wireless evolution network architecture diagram.
  • the EPC specifically includes but is not limited to an MME (Mobility Management Entity), an SGSN (Serving GPRS Support Node), an SGW (Serving Gateway, a Serving Gateway), and a PGW (PDN Gateway, Packet domain data network gateway).
  • MME/SGSN is mainly responsible for NAS (Non Access Stratum, non-access stratum) Signaling management, bearer management, and tracking and paging management in user idle mode
  • SGW is mainly responsible for local mobility anchors, mobility anchors within 3GPP systems, and lawful interception related information
  • PGW is mainly responsible for policies Execution and billing and lawful interception related functions.
  • the MME and the SGSN are collectively referred to as a mobility management network element.
  • an architecture for connecting to the CS through an E-UTRAN network is introduced.
  • the MME is connected to the mobile switching center MSC of the CS through the SGs interface, so as to provide CS services to the UE in the E-UTRAN network.
  • the UE first initiates an EMM Combined Procedure in the E-UTRAN network, for example, a Combined Attach Procedure or a Combined Tracking Area/Location Area Update Procedure ( Combined TA/LA Updating) Procedure ).
  • the MME and the MSC create an SGs association for the UE.
  • the UE needs to fall back from E-UTRAN to GERAN/UTRAN, that is, it needs to perform circuit switching fallback CS fallback.
  • the embodiment of the invention provides a method, a device and a system for processing circuit-switched fallback.
  • the network side rejects the CSFB request of the user equipment, the UE can reselect the GERAN/UTRAN with the assistance of the network to implement circuit switching fallback.
  • An aspect of the present invention provides a processing method for circuit switching fallback, including:
  • the evolved universal terrestrial radio access network E-UTRAN When it is determined that the extended service request message needs to be rejected, triggering the evolved universal terrestrial radio access network E-UTRAN to provide reselection information to the user equipment, so that the user equipment is from the reselection information according to the reselection information
  • the E-UTRAN falls back to the Global Mobile Telecommunications Radio Access Network GERAN/Universal Terrestrial Radio Access Network UTR AN.
  • a method for processing circuit switched fallback provided by still another aspect of the present invention includes:
  • reselection information provided by the evolved universal terrestrial radio access network E-UTRAN, and descending from the E-UTRAN to the global mobile communication radio access network GERAN/Universal Terrestrial Radio Access Network (UTRAN) according to the reselection information, where And the reselection information is triggered by the E-UTRAN when the mobility management entity determines that the extended service request message needs to be rejected.
  • GERAN/Universal Terrestrial Radio Access Network UTRAN
  • a method for processing circuit switched fallback provided by still another aspect of the present invention includes:
  • circuit switched fallback trigger indication is sent when the mobility management entity determines that a circuit switched fallback request of the user equipment needs to be rejected
  • a processing device for circuit-switched fallback includes:
  • a receiving unit configured to receive an extended service request message sent by the user equipment, where the extended service request message indicates a circuit switched fallback service
  • a determining unit configured to determine whether an extended service request message received by the receiving unit needs to be rejected
  • a triggering unit configured to trigger an evolved universal mobile universal terrestrial radio access network E-UTRAN when the determining unit determines that the extended service request message received by the receiving unit needs to be rejected
  • the user equipment provides reselection information, so that the user equipment is from the reselection information according to the reselection information
  • E-UTRAN falls back to the global mobile communication radio access network GERAN/Universal Terrestrial Radio Access Network UTRANo
  • a user equipment for circuit-switched fallback includes:
  • a service requesting unit configured to send an extended service request message to the mobility management entity when determining that the circuit switched fallback service needs to be performed, where the extended service request message indicates a circuit switched fallback service;
  • an obtaining unit configured to obtain reselection information provided by the evolved universal terrestrial radio access network E-UTRAN, where the reselection information is when the mobility management entity determines that the extended service request message needs to be rejected, Provided by E-UTRAN;
  • the first fallback unit is dropped from the E-UTRAN to the Global Mobile Telecommunications Radio Access Network GERAN/Universal Terrestrial Radio Access Network UTRAN according to the reselection information.
  • a processing device for circuit-switched fallback includes:
  • a receiving unit configured to receive a circuit switched fallback trigger indication sent by the mobility management entity, where the circuit switched fallback trigger indication is sent by the mobility management entity when determining that a circuit switched fallback request of the user equipment needs to be rejected;
  • a providing unit configured to provide reselection information to the user equipment according to the circuit switched fallback trigger indication, so that the user equipment falls back from the E-UTRAN to global mobile communication radio access according to the reselection information Network GERAN/Universal Terrestrial Radio Access Network UTRAN.
  • Another aspect of the present invention provides a circuit switched fallback processing system, including a user equipment, a mobility management entity, and an evolved universal terrestrial radio access network E-UTRAN:
  • the user equipment configured to send an extended service request message when determining that a circuit switched fallback service needs to be performed, where the extended service request message indicates a circuit switched fallback service, and obtains reselection information provided by the E-UTRAN, according to the Reselecting information from the E-UTRAN to the global mobile communication radio access network GERAN/Universal Terrestrial Radio Access Network UTR AN;
  • the mobility management entity is configured to receive an extended service request message sent by the user equipment, where Determining whether it is necessary to reject the extended service request message received by the receiving unit, and when determining that the extended service request message received by the receiving unit needs to be rejected, triggering the E-UTRAN to provide reselection information to the user equipment. ;
  • the E-UTRAN provides reselection information to the user equipment according to a trigger of the mobility management entity.
  • the present invention provides a method, a device and a system for processing a CSFB.
  • the E-UTRAN may be triggered to provide the reselection information to the user equipment, so that the user equipment obtains the reselection information according to the reselection information.
  • E-UTRAN falls back to GERAN/UTRAN.
  • the user equipment needs to actively interact with the wireless network to obtain reselection information, which can ensure that the UE quickly falls back to GERAN/UTRAN to perform CS service, reducing CSFB. The delay maintains the user's business experience.
  • Figure 2 is a block diagram of the current connection to the CS through the E-UTRAN network
  • FIG. 3 is a schematic flowchart of a method according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic flowchart of a method according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic flowchart of a method according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic structural diagram of a device according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another apparatus according to an embodiment of the present disclosure
  • FIG. 10 is a schematic structural diagram of a system according to an embodiment of the present invention. detailed description
  • the procedure for the MO (Mobile Originating) process includes: First, the UE sends an extended service request EXTENDED SERVICE REQUEST message to the MME. Next, the MME instructs the E-UTRAN to switch the UE to the GERAN/UTRAN. Specifically, the MME returns a Service Reject Service Reject message to the UE. After receiving the service rejection message, the UE actively initiates a process of selecting a target network cell, according to The target cell information obtained by the network interaction process is reselected back to GERAN/UTRAN, and the UE finally falls back to GERAN/UTRAN to execute the calling party.
  • EXTENDED SERVICE REQUEST the MME instructs the E-UTRAN to switch the UE to the GERAN/UTRAN. Specifically, the MME returns a Service Reject Service Reject message to the UE.
  • the UE After receiving the service rejection message, the UE actively initiates a process of selecting a target network cell, according to The target cell information obtained by the network interaction process is
  • a first embodiment of the present invention provides a method for processing a CSFB. As shown in FIG. 3, the method includes: S301: Receive an extended service request message sent by a user equipment, where the extended service request message indicates a circuit switchback (CS) Fallback, CSFB) business;
  • CS circuit switchback
  • the network side triggers
  • the E-UTRAN actively initiates a process of assisting the user equipment to return to the GERAN/UTRAN.
  • the method solves the problem that the service life is prolonged and the user service experience is affected due to the active reselection of the user equipment back to the GERAN/UTRAN to perform the CS service in the prior art.
  • the CSFB fallback service can be quickly ensured by the user equipment, and the delay of the user equipment returning to the GERAN/UTRAN to perform the CS service is ensured, and the service experience of the user is maintained.
  • the first embodiment of the present invention may further send a reject message to the user equipment when determining that the extended service request message needs to be rejected, where the reject message indicates that the user equipment starts waiting for a network to assist it from the E - UTRAN falls back to the GERAN/UTRAN; the method can further ensure that the user equipment does not immediately initiate the process of actively re-entering the GERAN/UTRAN after receiving the reject message, but initiates a procedure of waiting for the network to assist it to return to the GERAN/UTRAN, guaranteeing The orderly execution of the program.
  • a second embodiment of the present invention provides a CSFB processing method. As shown in FIG. 3, the method includes:
  • S401 When it is determined that a CS fallback (CSFB) service needs to be performed, send an extended service request message to the mobility management entity MME, where the extended service request message indicates a CS fallback (CSFB) service;
  • CSFB CS fallback
  • S402 Obtain reselection information provided by an evolved universal terrestrial radio access network E-UTRAN, and fall back from the E-UTRAN according to the reselection information to a global mobile communication radio access network GERAN/Universal Terrestrial Radio Access Network (UTRAN)
  • the reselection information is triggered by the E-UTRAN when the mobility management entity determines that the extended service request message needs to be rejected.
  • the reselection information returned by the E-UTRAN in the process of releasing the RRC connection and moving the user equipment from the E-UTRAN network to the GERAN/UTRAN, where the reselection information includes the user equipment is received.
  • the embodiment of the present invention may be specifically performed by the user equipment UE.
  • the method after receiving the reselection information returned by the network side, the method returns to the GERAN/UTRAN according to the reselection information, and the method solves the problem that the user equipment is active in the prior art. Selecting GERAN/UTRAN to perform CS service and causing business hours The problem of the user service experience being affected is extended, and the CSFB fallback service is quickly ensured by the user equipment, which ensures the delay of the user equipment returning to the GERAN/UTRAN to perform the CS service, and maintains the service experience of the user.
  • the user equipment may further receive a reject message, and according to the reject message, start a process of waiting for a network to assist it to fall back from the E-UTRAN to the GERAN/UTRAN, where the reject message is the mobile
  • the management entity determines when it needs to reject the extended service request message. After the user equipment receives the reject message of the CSFB service initiated by the user equipment, the user equipment does not immediately initiate the process of actively returning to the GERAN/UTRAN, but starts the waiting procedure to ensure the orderly execution of the solution.
  • a third embodiment of the present invention provides a CSFB processing method. As shown in FIG. 3, the method includes: S501: Receive a circuit switched fallback trigger indication sent by a mobility management entity, where the circuit switched fallback trigger indication is The mobility management entity determines that it is required to reject a circuit switched fallback request of the user equipment;
  • S502 Provide reselection information to the user equipment according to the circuit switched fallback trigger indication, so that the user equipment is from the evolved universal terrestrial radio access network according to the reselection information.
  • E-UTRAN falls back to the global mobile communication radio access network GER AN/Universal Terrestrial Radio Access Network
  • the embodiment of the present invention may be specifically implemented by the Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the E-UTRAN may be triggered to assist the user equipment to return to the GERAN.
  • the UTRAN process which solves the problem that the user equipment is prolonged and the user service experience is affected due to the active reselection of the user equipment to the GERAN/UTRAN to perform the CS service in the prior art, and the CSFB fallback service can be quickly ensured by the user equipment.
  • the delay of the user equipment to return to the GERAN/UTRAN to perform the CS service is ensured, and the service experience of the user is maintained.
  • FIG. 6 is a flowchart of processing a CSFB service according to Embodiment 4 of the present invention, including: S601: the user equipment (UE) completes an evolved packet system (EPS) / an international mobile subscriber (International Mobile Subscriberdentification Number, IMSI) joint attach procedure, a mobility management network element (MME) and a mobile The switching center (MSC) creates an association of the SGs interface for the UE;
  • EPS evolved packet system
  • IMSI International Mobile Subscriberdentification Number
  • MME mobility management network element
  • MSC mobile The switching center
  • S602 When there is a calling or called service, the UE decides to perform CSFB to fall back from the E-UTRAN to the GERAN/UTRAN;
  • the UE sends an extended service request (Extended Service Request) message to the MME.
  • the extended service request message carries a service type (Service Type) cell, and the service type cell is set to
  • the calling party "mobile originating CS fallback" is used to indicate the calling service of the CSFB, or the cell is set to "mobile terminating CS fallback" for indicating the called service of the CSFB;
  • the MME determines that the extended service request message needs to be rejected, and sends a Service Reject message to the UE, where the reject message indicates that the user equipment starts to wait for the network to assist it from the E-
  • the UTRAN falls back to the GERAN/UTRAN; specifically, the service reject message may carry a cause value, where the cause value is used to instruct the UE to start a program waiting for the network to assist it to return to the GERAN/UTRAN, specifically
  • the UE waits for a Radio Resource Control (RRC) connection release (RRC Release) message; correspondingly, the UE receives the service reject message carrying the cause value, and according to the service reject message, the UE The waiting procedure is started.
  • RRC Radio Resource Control
  • the waiting procedure means that the UE does not immediately reselect the GERAN/UTRAN, but waits for the network to assist it to return to the GERAN/UTRAN.
  • it may be an RRC Release message sent by the network side.
  • the UE may initiate a waiting timer, and the UE waits for the RRC connection to be released within the waiting timer duration. If the timer expires, the UE actively reselects the GERAN/UTRAN.
  • the MME determines that the service request that needs to be denied the extension includes, but is not limited to: the MME determines that the UE currently has only one Local IP Access (LIP) packet data network (Packet). Data Network, PDN) connected and the UE leaves the LIPA PDN Authorization area, or the MME determines that the UE is agnostic or the like because the context of the UE is not saved.
  • LIPA refers to that when the user accesses the HeNB (Home eNode B, the home eNB, the physical network element in the E-UTRAN can be the HeNB), the UE can directly access other IP devices in the home or enterprise network through the HeNB.
  • LIPA is regionally restricted, and LIPA can only be implemented in the LIPA authorized area.
  • the UE leaves the HeNB, and the UE is regarded as leaving the LIPA authorized area.
  • the network device e.g., MME
  • the network device finds that the UE leaves the LIPA authorization zone, then the network device will release (a similar statement may be to delete, deactivate) the LIPA PDN connection. If the current UE has only one LIPA PDN connection, the network will detach the UE.
  • the MME sends a UE Context Release Command (UE Context Release Command) message to the E-UTR AN, where the UE context release request carries a circuit switch fallback trigger CS Fallback Triggered indication, for example, by carrying a cause value (Cause) indication
  • UE Context Release Command UE Context Release Command
  • the UE context release request carries a circuit switch fallback trigger CS Fallback Triggered indication, for example, by carrying a cause value (Cause) indication
  • the release is triggered by CSFB, and Cause is set to "CS Fallback Triggered";
  • S606 Provide reselection information to the user equipment according to the CS Fallback Triggered indication in the UE context release request message.
  • the E-UTRAN sends an RRC connection release request message to the UE according to the CS Fallback Triggered indication, and moves the UE from the E-UTRAN network to the GERAN/UTRAN network, and more specifically, the E - UTRAN triggers an RRC connection release with redirection to GERAN or UTRAN procedure, in which an RRC release request message is sent to the UE and redirection information is carried in the Notifying the UE in the RRC release request message, where the reselection information includes target network cell information required for the UE to fall back to the GERAN/UTRAN, where the target network cell information may include one or more physical cell identification information. (physical cell identities) and system information corresponding to the cell, the reselection information may be pre-configured on the network side (mainly an evolved base station eNodeB), or the UE performs a joint attach procedure. Reported at the time.
  • the network side mainly an evolved base station eNodeB
  • the RRC connection release is performed and redirected to GERAN.
  • the E-UTRAN may also determine whether the UE and the network support RRC connection release and provide multi-cell redirection to GERAN or UTRAN (RRC connection release with redirection and Multi Cell System Information to GERAN/UTRAN) ), if both are supported, start the process.
  • the reselection information may also be carried by other messages, for example, the E-UTRAN constructs a new reselection information providing message, carries the reselection information in the reselection information providing message, and sends the reselection information. To the user device.
  • the E-UTRAN confirms that the connection is released. Specifically, the E-UTRAN returns a UE Context Release Complete message to the MME.
  • the UE receives the RRC connection release request message, and reselects the GERAN/UTRAN according to the reselection information. Specifically, as described in step S406, the UE accesses the target network cell information according to the network. GERAN/UTRAN, establishes a wireless signaling connection, and returns to the GERAN/UTRAN network for fast CS Fallback.
  • the method provided by the embodiment of the present invention when the network side determines that the CSFB service request of the user equipment needs to be rejected, the network side assists the UE to obtain the reselection information, and returns to the GERAN/UTRAN, and the UE actively interacts with the wireless network to obtain the weight.
  • the step S608 can also be performed before or at the same time as S607, and does not affect the implementation of the embodiment of the present invention.
  • the UE accesses the target network cell, and the UE further compares whether the cell of the currently accessed GSM/EDGE network is inconsistent with the cell of the GSM/EDGE network saved by itself, that is, compares the received Location area identifier of the current access cell (location area Identification, LAI), if the LAI saved by the UE is consistent, the UE starts to initiate a CS service related process, for example, sending a service request Service Request message to the MSC, and if not, the UE needs to perform location area update.
  • the embodiment of the present invention further provides a more optimized solution for the UE to perform location area update, to further implement fast return of the UE to the GERAN/UTRAN.
  • the further solution includes:
  • the UE When the UE finds that the location area is inconsistent, and the UE finds that the current network works in a network Modes of Operation (I) scenario (the network mode I is a scenario specified by the 3GPP standard, when in the GERAN/UTRAN network)
  • the network mode I When the serving GPRS support node SGSN and the MSC of the CS domain have a Gs interface, that is, the network mode I), the UE initiates a separate Location Area Update LAU procedure.
  • the existing standard process is to perform a joint location update process in network mode I, that is, to perform both the LAU process and the Routing Area Update (RAU) process.
  • RAU Routing Area Update
  • the joint RAU/LAU Updating process is possible.
  • the UE may initiate a separate LAU process to circumvent such an impact, and the CSFB process may be accelerated, so that the UE can quickly perform the CS service.
  • step S604 after receiving the service reject message, the UE may start a waiting timer. If the timer expires, the UE may actively reselect the GERAN/UTRAN, that is, the UE will work. The mode is switched from the E-UTRAN to the GERAN/UTRAN, and then the suitable cell camping is searched in the wireless environment of the GERAN/UTRAN.
  • the method is a supplementary implementation manner of the embodiment of the present invention, and can compensate for the user equipment caused by the network failure. The problem of re-election information sent by the network side but not successfully returned to GERAN/UTRAN cannot be obtained.
  • FIG. 7 is a processing device of a CSFB service according to Embodiment 5 of the present invention, including:
  • the receiving unit 701 is configured to receive an extended service request message sent by the user equipment, where the extended service request message indicates a circuit switched fallback service;
  • the determining unit 702 is configured to determine whether it is required to reject the extended service request message received by the receiving unit 701;
  • the triggering unit 703 is configured to trigger the evolved universal mobile universal terrestrial radio access network E-UTRAN to provide the user equipment when the determining unit 702 determines that the extended service request message received by the receiving unit 701 needs to be rejected. Reselecting information so that the user equipment falls back from the E-UTRAN to the Global System for Mobile Communications Radio Access Network GERAN/Universal Terrestrial Radio Access Network UTRAN according to the reselection information.
  • the triggering unit 703 is specifically configured to: when the determining unit 702 determines that the extended service request message received by the receiving unit 701 is to be rejected, send a user equipment context release request message to the E-UTRAN,
  • the user equipment context release request message carries the circuit switched fallback trigger indication, so that the E-UTRAN sends the wireless to the user equipment according to the circuit switched fallback trigger indication in the user equipment context release request message.
  • the resource controls an RRC connection release request message, and the RRC connection release request message carries the reselection information.
  • the processing apparatus may further include: a rejecting unit 704, configured to determine, at the determining unit 702, that the extended service request message that is received by the receiving unit 701 is rejected Sending a reject message to the user equipment, the reject message indicating that the user equipment waits for a network to assist it to fall back from the E-UTRAN to the GERAN/UTRAN
  • the processing device of the embodiment of the present invention may be specifically a mobility management entity MME.
  • the processing device may trigger the E-UTRAN to actively start to assist the user equipment to return to the GERAN/
  • the UTRAN process solves the problem that the user service is extended and the user service experience is affected due to the active reselection of the user equipment to the GERAN/UTRAN to perform the CS service in the prior art, and the CSFB fallback service can be quickly ensured by the user equipment, thereby ensuring the user.
  • the device returns the delay of the GE service performed by GERAN/UTRAN, and maintains the service of the user. Experience.
  • FIG. 8 is a user equipment of a CSFB service according to Embodiment 6 of the present invention, which includes:
  • the service requesting unit 801 is configured to, when determining that the circuit switched fallback service needs to be performed, send an extended service request message to the mobility management entity, where the extended service request message indicates the circuit switched fallback service;
  • the obtaining unit 802 is configured to obtain reselection information provided by the evolved universal terrestrial radio access network E-UTRAN, where the reselection information is triggered when the mobility management entity determines that the extended service request message needs to be rejected. Provided by the E-UTRAN;
  • the obtaining unit 802 is specifically configured to receive the radio resource control RRC connection release request message sent by the E-UTRAN, where the RRC connection release request message carries the reselection information; The reselection information is dropped from the E-UTRAN to the Global Mobile Telecommunications Radio Access Network GERAN/Universal Terrestrial Radio Access Network UTRAN.
  • the processing apparatus may further include: a waiting unit 804, configured to receive a reject message, and according to the reject message, start waiting for a network to assist him to fall back from the E-UTRAN And the procedure of the GERAN/UTRAN, wherein the reject message is sent when the mobility management entity determines that the extended service request message needs to be rejected.
  • a waiting unit 804 configured to receive a reject message, and according to the reject message, start waiting for a network to assist him to fall back from the E-UTRAN And the procedure of the GERAN/UTRAN, wherein the reject message is sent when the mobility management entity determines that the extended service request message needs to be rejected.
  • the processing apparatus may further include: an updating unit 805, configured to identify, in the location area of the currently accessed GERAN/UTRAN, the LAI and the GERAN saved by the user equipment.
  • an updating unit 805 configured to identify, in the location area of the currently accessed GERAN/UTRAN, the LAI and the GERAN saved by the user equipment.
  • the processing apparatus may further include: a second fallback unit 806, configured to actively reselect the GERAN/UTRAN after the waiting unit times out
  • the user equipment of the embodiment of the present invention re-enters the GERAN/UTRAN according to the reselection information after receiving the reselection information returned by the network side, and the method solves the problem that the user equipment actively reselects in the prior art.
  • the GERAN/UTRAN performs the CS service and the service is extended, the user service experience is affected.
  • the user equipment can quickly ensure the CSFB fallback service, ensuring the delay of the user equipment returning to the GERAN/UTRAN to perform the CS service, and maintaining the user's Business experience.
  • FIG. 9 is a processing device of a CSFB service according to Embodiment 7 of the present invention, which includes:
  • the receiving unit 901 is configured to receive a circuit switched fallback trigger indication sent by the mobility management entity, where the circuit switched fallback trigger indication is sent by the mobility management entity when determining that the circuit switched fallback request of the user equipment needs to be rejected;
  • the providing unit 902 is configured to provide reselection information to the user equipment according to the circuit switched fallback trigger indication, so that the user equipment falls back from the E-UTRAN to the global mobile communication wireless connection according to the reselection information.
  • the receiving unit 901 is specifically configured to receive a user equipment context release request message sent by the mobility management entity, where the user equipment context release request message carries a circuit switch fallback trigger indication;
  • the providing unit 902 is specifically configured to send a radio resource control RRC connection release request message to the user equipment according to the circuit switched fallback trigger indication in the user equipment context release request message, where the RRC connection is released.
  • the request message carries the reselection information.
  • the embodiment of the present invention is specifically an Evolved Universal Terrestrial Radio Access Network (E-UTRAN).
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the E-UTRAN may be triggered to assist the user equipment to return to the GERAN/UTRAN.
  • the method solves the problem that the user service experience of the prior art is affected, and can ensure that the user equipment quickly performs the CSFB fallback service, and ensures the delay of the user equipment returning to the GERAN/UTRAN to perform the CS service, and maintains the service experience of the user.
  • FIG. 10 is a system of a CSFB service according to Embodiment 8 of the present invention, including a user equipment 1001, a mobility management entity 1002, and an evolved universal terrestrial radio access network.
  • E-UTRAN 1003 E-UTRAN 1003:
  • the user equipment 1001 is configured to: when it is determined that the circuit switched fallback service needs to be performed, send an extended service request message, where the extended service request message indicates a circuit switched fallback service, and obtains the reselection information provided by the E-UTRAN, Returning from the E-UTRAN to the global mobile communication radio access network GERAN/Universal Terrestrial Radio Access Network (UTRAN) according to the reselection information;
  • GERAN/Universal Terrestrial Radio Access Network UTRAN
  • the mobility management entity 1002 is configured to receive an extended service request message sent by the user equipment, determine whether it is necessary to reject the extended service request message received by the receiving unit, and determine that the receiving unit is required to be rejected.
  • the E-UTRAN 1003 is triggered to provide reselection information to the user equipment;
  • the E-UTRAN 1003 provides reselection information to the user equipment according to the trigger of the mobility management entity.
  • the E-UTRAN when the network side determines that the CSFB service request of the user equipment needs to be rejected, the E-UTRAN may be triggered to initiate the process of assisting the user equipment to return to the GERAN/UTRAN.
  • the method solves the problem that the user equipment actively reselects in the prior art.
  • the GERAN/UTRAN performs the CS service and the service is extended, the user service experience is affected.
  • the user equipment can quickly ensure the CSFB fallback service, ensuring the delay of the user equipment returning to the GERAN/UTRAN to perform the CS service, and maintaining the user's service. Experience.
  • modules in the user equipment in the embodiment may be distributed in the user equipment of the embodiment according to the embodiment, or may be correspondingly changed in one or more user equipments different from the embodiment. .
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • the storage medium includes: ROM, RAM, disk or optical disc, etc., which can store various program codes.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé de gestion de technologie CSFB (Circuit-Switched FallBack). L'invention se rapporte d'autre part à un dispositif et à un système associés. Dans l'un des modes de réalisation de la présente invention, un procédé de gestion de technologie CSFB est caractérisé par les étapes consistant : à recevoir un message de demande de service étendu transmis par un équipement d'utilisateur, le message de demande de service étendu indiquant un service CSFB ; et, quand il est déterminé que le message de demande de service étendu ne doit pas être accepté, à déclencher le réseau universel d'accès radio terrestre évolué (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) dans le but de fournir des informations de resélection à l'équipement d'utilisateur, de telle sorte que l'équipement d'utilisateur repasse du réseau E-UTRAN au réseau GERAN (réseau d'accès radio GSM Edge) ou au réseau UTRAN (Universal Terrestrial Radio Access Network, Réseau universel d'accès radio terrestre) sur la base des informations de resélection. Le procédé décrit dans la présente invention est apte à garantir que l'UE pourra repasser rapidement au réseau GERAN/UTRAN afin d'exécuter le service CS, ce qui permet de réduire le retard CSFB et de maintenir la satisfaction de l'utilisateur en termes d'expérience du service.
PCT/CN2011/078841 2011-08-24 2011-08-24 Procédé de gestion de technologie csfb, et dispositif et système associés WO2012162961A1 (fr)

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CN2011800017083A CN103081535A (zh) 2011-08-24 2011-08-24 一种电路交换回落的处理方法、装置和系统

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