WO2017005083A1 - 一种异系统检测事件的控制方法和用户设备 - Google Patents

一种异系统检测事件的控制方法和用户设备 Download PDF

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Publication number
WO2017005083A1
WO2017005083A1 PCT/CN2016/085853 CN2016085853W WO2017005083A1 WO 2017005083 A1 WO2017005083 A1 WO 2017005083A1 CN 2016085853 W CN2016085853 W CN 2016085853W WO 2017005083 A1 WO2017005083 A1 WO 2017005083A1
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Prior art keywords
user equipment
srvcc
measurement report
call state
current call
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PCT/CN2016/085853
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English (en)
French (fr)
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郑顺利
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华为技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • 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]
    • H04W36/00226—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] wherein the core network technologies comprise IP multimedia system [IMS], e.g. single radio voice call continuity [SRVCC]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and a user equipment for controlling a heterogeneous system detection event.
  • LTE/Evolved Packet Core (EPC) network is an IP network.
  • the standard voice solution is Internet Protocol (English: Internet Protocol).
  • IP) Multimedia Subsystem (English: IP Multimedia Subsystem, IMS for short), which carries voice services under the LTE network, namely LTE network voice service (English: Voice over LTE, referred to as VoLTE).
  • IMS IP Multimedia Subsystem
  • LTE network voice service English: Voice over LTE, referred to as VoLTE
  • the LTE/EPC adopts the Single Radio Voice Call Continuity (SRVCC) technology to complete the voice service switching from the LTE to the CS network.
  • SVGCC Single Radio Voice Call Continuity
  • the SRVCC handover procedure specified by the 3rd Generation Partner Project (English: the 3rd Generation Partner Project, 3GPP) 23216 protocol includes: after reporting the measurement report of the system detection event on the user equipment (English: User Equipment, UE for short)
  • the source base station (English: Evolution Node B, e.g., eNodeB) decides to initiate the SRVCC handover, and sends a handover request to the source mobile function entity (English: Mobility Management Entity, MME for short).
  • the source MME performs a handover procedure of a packet domain (English: Packet Switch, PS for short)-CS, and sends a PS-CS handover request to the SRVCC network interworking function (English: Interworking Function, IWF for short), and the SRVCC IWF sends the preparation to the target MSC. Switch the request.
  • the target MSC sends a redirection request to the target base station to request allocation of circuit domain radio bearer resources. After the target base station allocates radio bearer resources, it returns a preparation handover response to the SRVCC IWF. After receiving the preparation handover response, the SRVCC IWF starts the process of performing the initial session transfer process of the IMS network and the UE accessing the CS domain network.
  • the initial session transfer process in the IMS network includes: determining, by the SCC AS in the IMS network, whether the SRVCC capability of the UE and the IMS supports the current call state of the UE, and if the support, the response sent to the SRVCC IWF is 200 ok, otherwise the failure is OXX, indicating that the initial session transfer failed.
  • the UE accessing the CS domain network if the UE does not have the SRVCC capability, the UE does not access the CS domain network. After the UE access succeeds or fails, the target MSC feeds back the handover completion response to the SRVCC IWF.
  • the SRVCC IWF After receiving the response message sent by the IMS network and the handover completion response fed back by the target MSC, the SRVCC IWF sends a PS-CS completion notification message to the source MME. After receiving the PS-CS completion notification message, the MME releases the UE. PS dedicated bearer in the IMS network.
  • the base station of the target CS domain network waits for the radio network controller (English: Radio Network Controller, RNC for short) or the mobile switching center (English: Mobile Switching Center, MSC for short). After the timer expires (usually a dozen seconds), the allocated radio bearer resources are released. In this way, during the period when the target base station allocates the radio bearer resources to release the radio bearer resources, the radio resources are not effectively used, resulting in waste of resources.
  • RNC Radio Network Controller
  • MSC Mobile Switching Center
  • the MME will release the PS dedicated bearer of the UE in the IMS network after receiving the PS-CS completion notification message. In this case, in the case of a handover failure, the UE may be dropped/call loss.
  • the embodiment of the present invention provides a method for controlling an event detection of a different system and a UE, which is used to avoid waste of radio resources in the target network circuit domain when the SRVCC capability of the UE and the IMS network does not support the current call state of the UE and the SRVCC handover fails. , UE dropped calls / call loss problem.
  • the present invention provides a method for controlling an event detection of a different system, the method comprising:
  • the user equipment UE receives the heterogeneous system detection event request message sent by the base station eNodeB;
  • IMS Internet Protocol Multimedia Subsystem
  • the UE reports to the eNodeB.
  • the measurement report is used to trigger the eNodeB to initiate an SRVCC handover.
  • the reporting the report by the UE to the eNodeB includes:
  • the UE performs measurement of an inter-system detection event and obtains a measurement report
  • the UE reports the measurement report to the eNodeB.
  • the method further includes:
  • the UE performs measurement of an inter-system detection event and obtains a measurement report
  • the measurement report includes:
  • the UE determines whether the measurement report meets the reporting condition
  • the UE reports the measurement report to the eNodeB.
  • the IMS network and the SRVCC capability support of the UE includes:
  • the current call state is before ringing
  • the IMS network and the SRVCC capability of the UE support a single radio frequency voice continuous bSRVCC before ringing; or
  • the current call state is a ringing state
  • the IMS network and the SRVCC capability of the UE support a ringing single radio voice continuous aSRVCC;
  • the current call state is a multi-way call state
  • the IMS network and the SRVCC capability of the UE support multiple call single radio frequency voice continuous mid-call SRVCC; or
  • the current call state is an off-hook state
  • the IMS network and the SRVCC capabilities of the UE support enhanced single radio frequency voice continuous eSRVCC.
  • the user equipment UE receives the heterogeneous system detection event sent by the base station eNodeB Before requesting a message, the method further includes:
  • the UE performs measurement according to the same system detection event request message and sends a measurement report to the eNodeB, where the measurement report indicates that the channel quality of the serving cell of the UE is less than a preset threshold.
  • the present invention provides a user equipment UE, where the UE includes: a receiving unit, an acquiring unit, and a reporting unit;
  • the receiving unit is configured to receive a different system detection event request message sent by the base station eNodeB;
  • the acquiring unit is configured to acquire a current call state of the UE, and an Internet Protocol Multimedia Subsystem (IMS) network and a single radio frequency voice continuous SRVCC capability of the UE;
  • IMS Internet Protocol Multimedia Subsystem
  • the reporting unit is configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, when the measurement report of the different system detection event satisfies the reporting condition, The eNodeB reports the measurement report, and is used to trigger the eNodeB to initiate an SRVCC handover.
  • the reporting unit is specifically configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, Perform measurement of an inter-system detection event and obtain a measurement report;
  • the measurement report When the measurement report satisfies the reporting condition, the measurement report is reported to the eNodeB.
  • the UE further includes: a measuring unit, where the measuring unit is configured to perform, after the receiving unit receives the different system detection event request message sent by the base station eNodeB, System test Measurement of the event and obtaining a measurement report;
  • the reporting unit is specifically configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, determine whether the measurement report satisfies the reporting condition;
  • the SRVCC handover in the call state includes:
  • the current call state is before ringing
  • the IMS network and the SRVCC capability of the UE support a single radio frequency voice continuous bSRVCC before ringing; or
  • the current call state is a ringing state
  • the IMS network and the SRVCC capability of the UE support a ringing single radio voice continuous aSRVCC;
  • the current call state is a multi-way call state
  • the IMS network and the SRVCC capability of the UE support multiple call single radio frequency voice continuous mid-call SRVCC; or
  • the current call state is an off-hook state
  • the IMS network and the SRVCC capabilities of the UE support enhanced single radio frequency voice continuous eSRVCC.
  • the receiving unit before the receiving unit receives the heterogeneous system detection event request message sent by the base station eNodeB, The receiving unit is further configured to receive a same system detection event request message sent by the eNodeB;
  • the measuring unit is further configured to perform measurement according to the same system detection event request message
  • the reporting unit is further configured to send a measurement report of the system detection event measured by the measurement unit to the eNodeB, where the measurement report indicates that a channel quality of a serving cell of the UE is less than a preset threshold.
  • the embodiment of the present invention provides a method for reporting a different system detection event and a UE, where the method includes: the user equipment UE receives an inter-system detection event request message sent by the eNodeB, and the UE acquires the current call status of the UE, and The IMS network and the SRVCC capability of the UE, if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, the measurement report of the detection event of the different system satisfies the reporting condition The UE reports the measurement report to the eNodeB.
  • the UE reports to the eNodeB after determining the SRVCC capability of the IMS network, the UE's own SRVCC capability, and the current call state of the UE, after determining that the SRVCC capability of the UE and the IMS network supports the UE to perform SRVCC handover in the current call state.
  • the measurement report of the different system detection event that satisfies the reporting condition triggers the eNodeB to send the SRVCC handover, so that the radio resource of the target network circuit domain is wasted because the SRVCC capability of the UE and the IMS network does not support the current call state of the UE, causing the SRVCC handover to fail. , UE dropped calls / call loss problem.
  • FIG. 1 is a structural diagram of a network system implementing SRVCC
  • FIG. 2 is a schematic diagram of a SRVCC handover process
  • FIG. 3 is a schematic flow chart 1 of a control method for detecting an event of a different system
  • FIG. 4 is a schematic flow chart 2 of a control method for detecting an event of a different system
  • FIG. 5 is a schematic structural diagram 1 of a UE
  • FIG. 6 is a schematic structural diagram 2 of a UE.
  • the embodiments of the present invention are applied to a network system for performing voice communication over an IMS network, including but not limited to an LTE network system.
  • the user equipment UE in the present application may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem.
  • the UE may communicate with one or more core networks via a radio access network (English: Radio Access Network, RAN for short), and the UE may be a mobile terminal, such as a mobile phone (or "cellular" phone) and has a mobile terminal.
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the base station (English: base stat, BS for short) device which may also be referred to as a base station, is a device deployed in a wireless access network to provide wireless communication functions.
  • the device providing the function of the base station in the 2G network includes a base transceiver station (BTS) and a base station controller (abbreviation: BSC).
  • the device providing the function of the base station in the 3G network includes: Node B (English abbreviation: NodeB) and radio network controller (English: radio network controller, RNC for short), the device that provides the base station function in the 4G network includes the evolved Node B (English: evolved NodeB, referred to as: The eNB is an access point (English: Access Point, AP for short).
  • the IMS voice is adopted in the LTE network.
  • the coverage of the LTE network is low in the initial stage.
  • the 3GPP proposes that the voice call is continuous (English: Voice Call Community, Abbreviation: VCC) technical solution.
  • the VCC is a scheme for smoothly switching the IP-based voice (Voice of IP, VoIP) service of the source network to the CS domain of the target network, and is used to maintain the continuity of the voice service.
  • the VCC includes two modes: dual radio (Dual Radio, DR for short) and single radio (English: Single Radio, SR for short), namely DRVCC and SRVCC.
  • the SR refers to a wireless signal that the UE can only receive one carrier frequency at a time.
  • the embodiments of the present invention are applied to an SRVCC scenario.
  • FIG. 1 is a schematic diagram of a network system architecture for implementing SRVCC, the system includes: source E-UTRAN, source MME, SRVCC IWF, target MSC, and target Universal Mobile Telecommunications System (UMTS) land.
  • Radio access network English: UMTS Terrestrial Radio Access Network, UTRAN for short
  • EDGE Enhanced Data Rate for GSM Evolution
  • LTE EDGE Radio Access Network English: GSM EDGE Radio Access Network, Abbreviation: GERAN
  • IMS network International Mobile Telecommunications System
  • the source E-UTRAN is an access network part of the LTE network system, including an eNodeB.
  • the MME is configured to perform a PS bearer division function, distinguish between a VoIP bearer and a non-VoIP bearer, initiate handover of an SRVCC to a target cell, coordinate synchronization of PS handover and SRVCC handover, and perform non-voice bearer suspension and non-voice bearer recovery.
  • the SRVCC IWF processes the voice service handover preparation request sent by the MME through the Sv interface, initiates a session handover from the IMS domain to the CS domain, and processes the CS handover and session handover procedures.
  • the HSS needs to store a special parameter session migration number (English: Session Transfer Number Single-Radio, STN-SR for short).
  • STN-SR Session Transfer Number Single-Radio
  • the SRVCC handover is triggered (English: Handover, referred to as HO).
  • the specific SRVCC handover process is shown in Figure 2, including:
  • the UE sends a measurement report of the heterogeneous system detection event to the source eNodeB.
  • the heterogeneous system detection event includes B1 and B2 events.
  • the B1 event is: the reference signal receiving power (English: Reference Signal Receiving Power, RSRP) value of the radio access type (English: Radio Access Type, RAT for short) is measured; the reporting condition of the B1 event measurement report is The RSRP value of the different RAT cell is higher than the absolute threshold threshold.
  • RSRP Reference Signal Receiving Power
  • the B2 event is: the RSRP value of the serving cell and the different RAT cell is measured; the reporting condition of the B2 event measurement report is: the RSRP value of the serving cell is lower than the absolute threshold threshold 1 and the RSRP value of the neighboring cell is higher than the absolute threshold threshold 2.
  • the inter-RAT cell refers to a neighboring cell that belongs to a different network standard from the current serving cell of the UE.
  • the source eNodeB decides to initiate the SRVCC handover to UTRAN/GERAN according to the handover decision algorithm.
  • the source eNodeB sends a handover requirement handover required to the source MME, and identifies the handover as SRVCC.
  • the source MME then performs a PS-CS handover procedure.
  • the source MME selects the target SRVCC IWF (ie, SRVCC IWF) according to the target ID carried in the handover required, and sends a PS-CS request to the SRVCC IWF.
  • the PS-CS request includes the STN-SR and the Mobile Services International Integrated Services Digital Network (English: Integrated Services Digital Network (English: Public Switched Telephone Network, PSTN) (English: Mobile) Subscriber International ISDN/PSTN number, referred to as: MSISDN), MME context and other information.
  • the SRVCC IWF After receiving the PS-CS handover request, the SRVCC IWF sends a preparation handover request to the target MSC.
  • the target MSC sends a redirection request to the target eNB of the target UTRAN/EGRAN (Radio Network Subsystem, RNS for short), requesting to allocate CS radio bearer resources.
  • RNS Radio Network Subsystem
  • the target MSC sends a handover preparation response to the SRVCC IWF, and allocates a handover number.
  • the SRVCC IWF establishes a circuit domain bearer connection with the target MSC using the handover number.
  • the SRVCC IWF initiates a session transfer process, and the IMS network performs a session transfer process and updates the remote end.
  • the session transfer process includes: the SCC AS in the IMS network determines whether the current call state matches the UE capability, and if the match, the response sent to the SRVCC IWF is 200 ok, otherwise the failure OXX indicates that the initial session transfer fails.
  • the IMS network sends a response message to the SRVCC IWF.
  • the SRVCC IWF performs UE access.
  • the SRVCC IWF sends a PS-CS handover response to the source MME, indicating that the UE accesses.
  • the MME sends a handover command HO Command to the eNodeB.
  • the UE starts to try to access the CS network, and the target base station sends a redirection monitoring Relocation Detect message to the target MSC, indicating that the UE has detected the new channel, and has the condition of accessing the new radio channel, but has not actually accessed.
  • the target MSC After receiving the Relocation Detect message reported by the target base station, the target MSC sends a mapping processing access signaling MAP PROCESS ACCESS SIGNALLING IND message to the SRVCC IWF through the inter-office mapping MAP signaling.
  • the target base station sends a redirection complete message to the target MSC to notify the target MSC that the handover is complete.
  • the target MSC After receiving the redirection Complete message, the target MSC sends a mapping and sending end signaling MAP SEND END SIGNAL IND message to the SRVCC IWF through the inter-office MAP signaling.
  • the UE does not access the target CS domain network when the UE does not have the SRVCC capability.
  • the SRVCC IWF After receiving the response message sent by the IMS network and the MAP SEND END SIGNAL IND (ie, indicating the UE handover complete message), the SRVCC IWF sends a PS-CS handover completion response to the source MME.
  • the SRVCC IWF sends a PS-CS Complete Notification message SRVCC PS to CS Complete Notification message to the source MME, notifying the source MME that the handover has been completed.
  • the source MME releases the PS dedicated bearer.
  • the SRVCC IWF After receiving the response message sent by the IMS network and the UE handover complete message, the SRVCC IWF sends a PS-CS completion notification message to the source MME. After receiving the PS-CS completion notification message, the MME releases the PS dedicated bearer of the UE in the IMS network. If the initial session transfer succeeds and the UE access is successful, the SRVCC IWF may indicate that the handover is successful through the PS-CS completion notification message; if the initial session transfer fails or the UE access fails, the SRVCC IWF may complete the notification through the PS-CS. The message indicates that the switch failed.
  • the radio bearer resources of the target network circuit domain are wasted due to the failure of the PS-CS handover; and after the eNodeB initiates the SRVCC handover, the handover succeeds or fails.
  • the PS dedicated bearer will be released, which will cause the UE to drop/call loss in case of a failed handover.
  • the present application proposes a method for controlling an event detection of a different system and a UE.
  • the UE side determines the UE and the IMS according to the SRVCC capability of the IMS network recorded by the UE, the SRVCC capability of the UE itself, and the current call state of the UE.
  • the SRVCC capability of the network enables the UE to report the measurement report of the different system detection event that meets the reporting condition to the eNodeB after the SRVCC handover is performed in the current call state, triggering the eNodeB to send the SRVCC handover, thereby avoiding the SRVCC of the UE and the IMS network as much as possible.
  • the capability does not support the problem that the UE's current call state causes the SRVCC handover to fail, the target network circuit domain radio resources are wasted, and the UE drops/call loss.
  • An embodiment of the present invention provides a method for controlling an event detection of a different system. As shown in FIG. 3, the method includes:
  • the user equipment UE receives a different system detection event request message sent by the base station eNodeB.
  • the UE acquires a current call state of the UE, and an SRVCC capability of the IMS network and the UE.
  • the UE reports to the The eNodeB reports the measurement report.
  • the source eNodeB After the radio bearer of the UE and the eNodeB is established, the source eNodeB sends a radio resource connection reconfiguration message RRC Connection Reconfiguration to the UE, where the measurement configuration message configured by the source eNodeB is used to control the measurement process of the UE connection state, and the measurement configuration is performed.
  • the message includes measurements of heterogeneous system detection events.
  • the UE After the UE receives the inter-system detection event request message sent by the eNodeB, the UE acquires its current call state and the SRVCC capability of the IMS network recorded by the UE.
  • the UE has several calls according to whether it has a call, and at which stage the call is determined to determine the current call state of the UE. If the UE does not currently have a voice call, the current call state of the UE is the initial call in the pre-alerting phase. If there is only one voice call at present, and the peer has not picked up the phone, the current call state of the UE is ringing.
  • the current call state of the UE is off-hook, which can also be called steady state; if there are several voice calls currently (of which, among several calls The current call state of the UE is mid-cal l (each call is either in a ringing state or in an off-hook state). It should be noted that, the UE determines whether there is a voice call at present, and there are several calls, and the phase of the call is in the stage, which can be implemented by a person skilled in the art according to the prior art.
  • the SRVCC capability of the UE and the IMS network includes: support for single-RF voice continuous before ringing (English: SRVCC before Alerting, bSRVCC for short), and continuous ring-type radio voice continuous support (English: SRVCC in Alerting, aSRVCC for short) Supporting enhanced Single Radio Voice Call Continuity (eSRVCC), supporting multi-call single radio voice call continuity (English: mid-call Single Radio Voice Call Cont inuity, referred to as: mid-call SRVCC) ).
  • eSRVCC enhanced Single Radio Voice Call Continuity
  • multi-call single radio voice call continuity English: mid-call Single Radio Voice Call Cont inuity, referred to as: mid-call SRVCC
  • the SRVCC capability of the IMS network can be understood as the SRVCC capability of the network element included in the IMS network.
  • the network element of the IMS network includes: a service center and a continuous application server (English: Service Centralization and Continuity Application Server, SCC AS for short), and an access transfer control function (English: Access Transfer Control Functionality, ATCF for short), a call session.
  • Control function English: Call Session Control Funct, Abbreviation: CSCF
  • Multimedia Resource Function Controller English: Multimedia Resource Function Controller, MRFC for short
  • Multimedia Resource Function Processor English: Multimedia Resource Function Processor, MRFP And so on, this application will not be repeated here.
  • the UE may record whether the IMS network supports the SRVCC or eSRVCC, and the capabilities of the bSRVCC, the aSRVCC, and the mid-call SRVCC during the registration process; of course, the UE may also record whether the IMS network supports bSRVCC, aSRVCC, and mid during the previous call. -cal l SRVCC.
  • the SIP 1xx or SIP 2xx response of the Session Initiation Protocol (SIP) invite message sent by the UE carries the SRVCC capability of the SCC AS in the IMS network. .
  • SIP Session Initiation Protocol
  • the UE After the UE acquires the current call state of the UE, and the SRVCC capability of the IMS network and the UE, the UE determines whether the IMS network and the SRVCC capability of the UE support the UE in the SRVCC switching is performed in the current call state. If the measurement report of the different system detection event meets the reporting condition, the UE reports the measurement report to the eNodeB, and triggers the eNodeB to initiate the SRVCC handover. If not, the UE determines not to report the measurement report, and the process ends.
  • the UE may start performing an inter-system detection event, such as performing measurement according to a measurement period configured by the eNodeB. Determining that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, and when the measurement report of the different system detection event satisfies the reporting condition, the UE reports to the eNodeB The measurement report.
  • the UE Determining that the SRVCC capability of the IMS network and the UE does not support the UE to perform SRVCC handover in the current call state, even if the measurement report of the different system detection event satisfies the reporting condition, the UE does not Reporting the measurement report to the eNodeB.
  • the SRVCC handover is performed in the called state, and the measurement report of the different system detection event satisfies the reporting condition. It can be understood as: if it is determined that the SRVCC capability of the IMS network and the UE supports the UE to perform SRVCC in the current call state. Before the handover, the UE performs a plurality of different system detection events, and the measurement report that satisfies the reporting condition refers to a detection report of the latest system detection event that is performed by the UE.
  • the UE may also start performing an inter-system detection event only when it is determined that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state.
  • the UE reports the measurement report to the eNodeB when the measurement report of the different system detection event satisfies the reporting condition.
  • the UE determines that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, and the UE starts to perform measurement of an inter-system detection event and obtain a measurement report; When the measurement report meets the reporting condition, the UE reports the measurement report to the eNodeB. In this way, the problem that the UE frequently leaves the original channel for different system measurement when periodically performing the heterogeneous system detection event can be avoided.
  • the UE determines whether the SRVCC capability of the IMS network and the UE supports bSRVCC. If the bSRVCC is supported, determining that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state.
  • the UE determines whether the SRVCC capability of the IMS network and the UE supports aSRVCC. If aSRVCC is supported, determining that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state.
  • the UE determines whether the IMS network and the SRVCC capability of the UE support a mid-call SRVCC. If the mid-call SRVCC is supported, it is determined that the SRVCC capability of the IMS network and the UE supports the UE to perform SRVCC handover in the current call state.
  • the UE determines whether the SRVCC capability of the IMS network and the UE supports eSRVCC or SRVCC. If the eSRVCC or the SRVCC is supported, determining that the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state.
  • the method further includes:
  • the UE performs measurement according to the same system detection event request message and sends a measurement report to the eNodeB, where the measurement report indicates that the channel quality of the serving cell of the UE is less than a preset threshold.
  • the above-mentioned system detection events include the A1, A2, A3, A4, and A5 events.
  • the same system event request message includes any event in the same system detection event delivered by the eNodeB.
  • the measurement report of the same system event indicates that the channel quality of the serving cell of the UE is less than a preset threshold, that is, the channel quality of the serving cell is poor, and the eNodeB sends an inter-system detection event to the UE.
  • the method includes:
  • the UE receives the same system detection event request message sent by the eNodeB.
  • the UE performs measurement according to the same system detection event request message, and sends a measurement report to the eNodeB, where the measurement report indicates that the channel quality of the serving cell of the UE is less than a preset threshold.
  • the UE receives a different system detection event request message sent by the base station eNodeB.
  • the UE acquires a current call state of the UE, and an SRVCC capability of the IMS network and the UE.
  • the UE determines whether the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state.
  • the step 406 is performed; otherwise, the determining that the UE does not report the measurement report may be that the UE does not perform the inter-system detection event, so that the measurement report is not reported; When the measurement report of the different system detection event satisfies the reporting condition, the measurement report is not reported, and the process ends.
  • the UE reports the measurement report to the eNodeB, when the measurement report of the different system detection event meets the reporting condition.
  • the eNodeB initiates an SRVCC handover and performs an SRVCC handover procedure.
  • a method for controlling an event detection of a different system proposed by the present application is determined by the UE side according to the SRVCC capability of the IMS network recorded by the UE, the SRVCC capability of the UE itself, and the current call state of the UE.
  • the SRVCC capability enables the UE to report the measurement report of the different system detection event that satisfies the reporting condition to the eNodeB after the SRVCC handover is performed in the current call state, and triggers the eNodeB to send the SRVCC handover, thereby avoiding occupying the target network CS domain radio resource in advance, thereby causing the UE to avoid occupying the target network CS domain radio resource in advance.
  • the problem of waste of wireless resources also avoids the call drop/call loss problem of the UE.
  • the embodiment of the present invention provides a UE 50.
  • the UE includes: a receiving unit 501, an obtaining unit 502, and a reporting unit 503;
  • the receiving unit 501 is configured to receive a different system detection event request message sent by the base station eNodeB.
  • the obtaining unit 502 is configured to acquire a current call state of the UE, and an Internet Protocol Multimedia Subsystem (IMS) network and a single radio frequency voice continuous SRVCC capability of the UE;
  • IMS Internet Protocol Multimedia Subsystem
  • the reporting unit 503 is configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, when the measurement report of the different system detection event satisfies the reporting condition, The measurement report is reported to the eNodeB, and is used to trigger the eNodeB to initiate an SRVCC handover.
  • the reporting unit 503 is specifically configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, perform measurement of an abnormal system detection event and obtain a measurement. report;
  • the measurement report When the measurement report satisfies the reporting condition, the measurement report is reported to the eNodeB.
  • the UE further includes: a measuring unit 504, configured to perform measurement of the inter-system detection event and obtain measurement after the receiving unit 501 receives the inter-system detection event request message sent by the eNodeB eNodeB. report;
  • the reporting unit 503 is specifically configured to: if the VR network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, determine whether the measurement report meets the reporting condition;
  • the SRVCC capability of the IMS network and the UE to support the UE to perform SRVCC handover in the current call state includes:
  • the current call state is before ringing
  • the current call state is a ringing state
  • the current call state is a multi-way call state
  • the current call state is an off-hook state
  • the UE determines that the SRVCC capability of the IMS network and the UE supports enhanced single radio frequency voice continuous eSRVCC.
  • the receiving unit 501 before the receiving unit 501 receives the inter-system detection event request message sent by the eNodeB, the receiving unit 501 is further configured to receive the same-system detection event request message sent by the eNodeB.
  • the measuring unit 504 is further configured to perform measurement according to the same system detection event request message
  • the reporting unit 505 is further configured to send the measurement report of the system detection event measured by the measurement unit to the eNodeB, where the measurement report indicates that a channel quality of a serving cell of the UE is less than a preset threshold.
  • a UE proposed by the present application supports the UE in determining the SRVCC capability of the UE and the IMS network according to the SRVCC capability of the IMS network recorded by the UE, the SRVCC capability of the UE, and the current call state of the UE.
  • the eNodeB reports the measurement report of the different system detection event that satisfies the reporting condition, triggering the eNodeB to initiate the SRVCC handover, thereby avoiding occupying the target network CS domain radio resource in advance, resulting in waste of radio resources.
  • the problem of UE drop/call loss is also avoided.
  • the embodiment of the present invention provides a UE 60.
  • the UE 60 includes a processor 601, a memory 602, a bus 603, a receiver 604, and a transmitter 605.
  • the processor 601, the memory 602, the receiver 604, and the transmitter 605 are connected by a bus 603 and complete communication with each other.
  • Processor 601 may be a single core or multi-core central processing unit, or a particular integrated circuit, or one or more integrated circuits configured to implement embodiments of the present invention.
  • the memory 602 can be a high speed random access memory (RAM), or It is a non-volatile memory such as at least one disk storage.
  • RAM random access memory
  • non-volatile memory such as at least one disk storage.
  • the memory 2102 is for storing computer execution instructions 6021. Specifically, the program code may be included in the computer execution instruction 21021.
  • the receiver 604 is configured to receive a different system detection event request message sent by the base station eNodeB.
  • the processor 601 is configured to acquire a current call state of the UE, and an Internet Protocol Multimedia Subsystem (IMS) network and a single radio frequency voice continuous SRVCC capability of the UE;
  • IMS Internet Protocol Multimedia Subsystem
  • the transmitter 605 is configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, and the measurement report meets a reporting condition, report the report to the eNodeB.
  • the measurement report is used to trigger the eNodeB to initiate an SRVCC handover.
  • the processor 601 is configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, perform measurement of an abnormal system detection event and obtain a measurement. report.
  • the processor 601 is configured to: after the receiver 604 receives the inter-system detection event request message sent by the base station eNodeB, perform measurement of the inter-system detection event and obtain a measurement report;
  • the transmitter 605 is specifically configured to: if the IMS network and the SRVCC capability of the UE support the UE to perform SRVCC handover in the current call state, and the measurement report satisfies the reporting condition, The eNodeB reports the measurement report.
  • the SRVCC capability of the IMS network and the UE to support the UE to perform SRVCC handover in the current call state includes:
  • the current call state is before ringing
  • the IMS network and the SRVCC capability of the UE support a single radio frequency voice continuous bSRVCC before ringing; or
  • the current call state is a ringing state
  • the IMS network and the SRVCC capability of the UE support a ringing single radio voice continuous aSRVCC;
  • the current call state is a multi-way call state
  • the IMS network and the SRVCC capability of the UE support multiple call single radio frequency voice continuous mid-call SRVCC; or
  • the current call state is an off-hook state
  • the IMS network and the SRVCC capabilities of the UE support enhanced single radio frequency voice continuous eSRVCC.
  • the receiver 604 is further configured to receive the same system detection event request message sent by the eNodeB, before the user equipment UE receives the inter-system detection event request message sent by the eNodeB.
  • the processor 601 is further configured to perform measurement according to the same system detection event request message
  • the transmitter 605 is further configured to send a measurement report of the system detection event measured by the measurement unit to the eNodeB, where the measurement report indicates that a channel quality of a serving cell of the UE is less than a preset threshold.
  • a UE proposed by the present application supports the UE in determining the SRVCC capability of the UE and the IMS network according to the SRVCC capability of the IMS network recorded by the UE, the SRVCC capability of the UE, and the current call state of the UE.
  • the eNodeB reports the measurement report of the different system detection event that satisfies the reporting condition, triggering the eNodeB to initiate the SRVCC handover, thereby avoiding occupying the target network CS domain radio resource in advance, resulting in waste of radio resources.
  • the problem of UE drop/call loss is also avoided.
  • the disclosed terminal and method may be implemented in other manners.
  • the terminal embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, and the program code can be stored. Medium.

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Abstract

本发明实施例提供了一种异系统检测事件的控制方法和用户设备，用于避免由于UE和IMS网络的SRVCC能力不支持UE当前呼叫状态致使SRVCC切换失败的情况下，目标网络电路域无线资源浪费，UE掉话/呼损的问题。该方法包括：用户设备UE接收基站eNodeB发送的异系统检测事件请求消息；所述UE获取所述UE当前的呼叫状态，及所述IMS网络和所述UE的SRVCC能力；若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。本发明实施例应用于通信技术领域。

Description

一种异系统检测事件的控制方法和用户设备
本申请要求于2015年7月8日提交中国专利局、申请号为201510397642.4、发明名称为“一种异系统检测事件的控制方法和用户设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种异系统检测事件的控制方法和用户设备。
背景技术
长期演进(英文：Long Term Evolution，简称：LTE)/演进分组核心(英文：Evolved Packet Core，简称：EPC)网络作为一种IP网络，其标准的语音方案是采用因特网协议(英文：Internet Protocol，简称：IP)多媒体子系统(英文：IP Multimedia Subsystem，简称：IMS)，承载LTE网络下的语音业务，即LTE网络语音业务(英文：Voice over LTE，简称：VoLTE)。考虑到LTE/EPC初期部署是热点覆盖，逐步由点及面，传统电路域(英文：Circuit Switched，简称：CS)网络能弥补LTE覆盖不足。因此LTE/EPC采用单待无线语音呼叫连续(英文：Single Radio Voice Call Continuity，简称：SRVCC)技术，完成LTE到CS网络的语音业务切换。
第三代伙伴计划协议(英文：the 3rd Generation Partner Project，简称：3GPP)23216协议规定的SRVCC切换流程包括：在用户设备(英文：User Equipment，简称：UE)上报异系统检测事件的测量报告后，源基站(英文：Evolution Node B，简称：eNodeB)判决发起SRVCC切换，向源移动功能实体(英文：Mobility Management Entity，简称MME)发送切换请求。源MME执行分组域(英文：Packet Switch，简称：PS)-CS的切换流程，向SRVCC网络互通功能(英文：Interworking Function，简称：IWF)发送PS-CS切换请求，SRVCC IWF向目标MSC发送准备切换请求。目标MSC向目标基站发送重定向请求，请求分配电路域无线承载资源。目标基站分配无线承载资源后，向SRVCC IWF返回准备切换响应。SRVCC IWF在接收到准备切换响应后，同时启动执行IMS网络的初始会话转移过程和UE接入CS域网络的流程。其中，在IMS网络的初始会话转移过程包括：IMS网络中的SCC AS判断UE和IMS的SRVCC能力是否支持所述UE当前的呼叫状态，如果支持则向SRVCC IWF发送的响应为200ok，否则为失败OXX，表示初始会话转移失败。另外，在UE接入CS域网络的过程中，UE若不具备SRVCC能力，UE不会接入CS域网络。在UE接入成功或失败后，通过目标MSC向SRVCC IWF反馈切换完成响应。SRVCC IWF接收到IMS网络发送的响应消息和目标MSC反馈的切换完成响应后，向源MME发送PS-CS完成通知消息。MME接收到PS-CS完成通知消息后，释放UE 在IMS网络的PS专用承载。
以上，首先UE接入目标CS域网络失败后，目标CS域网络的基站等待无线网络控制器(英文：Radio Network Controller，简称：RNC)或移动交换中心(英文：Mobile Switching Center，简称：MSC)的定时器超时(一般是十几秒)后，才释放分配的无线承载资源。这样，在目标基站分配无线承载资源至释放无线承载资源这段时间内，无线资源未得到有效使用，造成资源浪费。
另外，无论PS-CS切换成功还是失败，MME接收到PS-CS完成通知消息后都会释放UE在IMS网络的PS专用承载。这样在切换失败的情况下，会导致UE掉话/呼损的问题。
发明内容
本发明实施例提供了一种异系统检测事件的控制方法和UE，用于避免由于UE和IMS网络的SRVCC能力不支持UE当前呼叫状态致使SRVCC切换失败的情况下，目标网络电路域无线资源浪费，UE掉话/呼损的问题。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明提供了一种异系统检测事件的控制方法，该方法包括：
用户设备UE接收基站eNodeB发送的异系统检测事件请求消息；
所述UE获取所述UE当前的呼叫状态，及因特网协议多媒体子系统IMS网络和所述UE的单射频语音连续SRVCC能力；
若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告，用于触发所述eNodeB发起SRVCC切换。
在第一方面第一种可能的实施方式中，结合第一方面，若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告包括：
若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，所述UE进行异系统检测事件的测量并获得测量报告；
在所述测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。
在第一方面第二种可能的实施方式中，结合第一方面，在用户设备UE接收基站eNodeB发送的异系统检测事件请求消息之后，该方法还包括：
所述UE进行异系统检测事件的测量并获得测量报告；
若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告包括：
若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC 切换，所述UE判断所述测量报告是否满足所述上报条件；
若满足，所述UE向所述eNodeB上报所述测量报告。
在第一方面第三种可能的实施方式中，结合第一方面或第一方面第一种可能的实施方式至第二种可能的实施方式，所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换包括：
所述当前的呼叫状态为振铃前；
所述IMS网络和所述UE的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
所述当前的呼叫状态为振铃态；
所述IMS网络和所述UE的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
所述当前的呼叫状态为多路呼叫态；
所述IMS网络和所述UE的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
所述当前的呼叫状态为摘机态；
所述IMS网络和所述UE的SRVCC能力支持增强的单射频语音连续eSRVCC。
在第一方面第四种可能的实施方式中，结合第一方面或第一方面第一种可能的实施方式至第三种可能的实施方式，在用户设备UE接收基站eNodeB发送的异系统检测事件请求消息之前，该方法还包括：
所述UE接收所述eNodeB发送的同系统检测事件请求消息；
所述UE根据所述同系统检测事件请求消息进行测量并向所述eNodeB发送测量报告，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
第二方面，本发明提供了一种用户设备UE，该UE包括：接收单元、获取单元、上报单元；
所述接收单元，用于接收基站eNodeB发送的异系统检测事件请求消息；
所述获取单元，用于获取所述UE当前的呼叫状态，及因特网协议多媒体子系统IMS网络和所述UE的单射频语音连续SRVCC能力；
所述上报单元，用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，向所述eNodeB上报所述测量报告，用于触发所述eNodeB发起SRVCC切换。
结合第二方面，在第一种可能的实施方式中，所述上报单元，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，进行异系统检测事件的测量并获得测量报告；
在所述测量报告满足上报条件时，向所述eNodeB上报所述测量报告。
结合第二方面，在第二种可能的实施方式中，所述UE还包括：测量单元，所述测量单元用于在所述接收单元接收基站eNodeB发送的异系统检测事件请求消息之后，进行异系统检测 事件的测量并获得测量报告；
所述上报单元，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，判断所述测量报告是否满足所述上报条件；
若满足，向所述eNodeB上报所述测量报告。
结合第二方面或第一种可能的实施方式至第二种可能的实施方式，在第三种可能的实施方式中，所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换包括：
所述当前的呼叫状态为振铃前；
所述IMS网络和所述UE的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
所述当前的呼叫状态为振铃态；
所述IMS网络和所述UE的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
所述当前的呼叫状态为多路呼叫态；
所述IMS网络和所述UE的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
所述当前的呼叫状态为摘机态；
所述IMS网络和所述UE的SRVCC能力支持增强的单射频语音连续eSRVCC。
结合第二方面或第一种可能的实施方式至第三种可能的实施方式，在第四种可能的实施方式中，在所述接收单元接收基站eNodeB发送的异系统检测事件请求消息之前，所述接收单元，还用于接收所述eNodeB发送的同系统检测事件请求消息；
所述测量单元，还用于根据所述同系统检测事件请求消息进行测量；
所述上报单元，还用于将所述测量单元测量的所述同系统检测事件的测量报告发送给所述eNodeB，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
本发明实施例提供了一种异系统检测事件上报的方法及UE，该方法包括：用户设备UE接收基站eNodeB发送的异系统检测事件请求消息，所述UE获取所述UE当前的呼叫状态，及IMS网络和所述UE的SRVCC能力，若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。由于UE根据UE记录的IMS网络的SRVCC能力，UE自身的SRVCC能力，以及UE当前的呼叫状态，在确定UE及IMS网络的SRVCC能力支持UE在当前的呼叫状态进行SRVCC切换后，才向eNodeB上报满足上报条件的异系统检测事件的测量报告，触发eNodeB发送SRVCC切换，从而可以避免由于UE和IMS网络的SRVCC能力不支持UE当前呼叫状态致使SRVCC切换失败的情况下，目标网络电路域无线资源浪费，UE掉话/呼损的问题。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为一种实现SRVCC的网络系统架构图；
图2为一种SRVCC切换流程示意图；
图3为一种异系统检测事件的控制方法流程示意图一；
图4为一种异系统检测事件的控制方法流程示意图二；
图5为一种UE的结构示意图一；
图6为一种UE的结构示意图二。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本文中术语“系统”和“网络”在本文中常被可互换使用。
本发明实施例应用于通过IMS网络进行语音通信的网络系统，包括但不限于LTE网络系统。
其中，本申请中的用户设备UE可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。UE可以经无线接入网(英文：Radio Access Network，简称：RAN)与一个或多个核心网进行通信，UE可以是移动终端，如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(英文：Personal Communicat ion Service，简称：PCS)电话、无绳电话、会话发起协议(英文：Session Initiation Protocol，简称：SIP)话机、无线本地环路(英文：Wireless Local Loop，简称：WLL)站、个人数字助理(英文：Personal Digital Ass istant，简称：PDA)等设备。本申请中的基站(英文：base stat ion，简称：BS)设备，也可称为基站，是一种部署在无线接入网用以提供无线通信功能的装置。在2G网络中提供基站功能的设备包括基地无线收发站(英文：base transceiver station,简称：BTS)和基站控制器(英文：base station controller,简称：BSC)，3G网络中提供基站功能的设备包括节点B(英文简称：NodeB)和无线网络控制器(英文：radio network controller,简称：RNC)，在4G网络中提供基站功能的设备包括演进的节点B(英文：evolved NodeB，简称： eNB)，在WLAN中，提供基站功能的设备为接入点(英文：Access Point，简称：AP)。
在LTE网络中采用IMS语音，然而LTE网络部署初期其覆盖率较低，为了避免用户从LTE网络移动到UTRAN或GERAN网络时掉话的问题，3GPP提出了语音呼叫连续(英文：Voice Call Community，简称：VCC)的技术方案。VCC是指将承载源网络的基于IP的语音(英文：Voice of IP，简称：VoIP)业务平滑切换到目标网络CS域的方案，用于保持语音业务的连续性。
依据UE同时接收不同无线信号的数量，VCC包括双射频(英文：Dual Radio，简称：DR)和单射频(英文：Single Radio，简称：SR)两种模式，即DRVCC和SRVCC。其中，SR是指UE在一个时间点只能接收一个载频的无线信号。本发明实施例应用于SRVCC场景。
如图1所示的实现SRVCC的网络系统架构图，该系统包括：源E-UTRAN、源MME、SRVCC IWF、目标MSC、目标通用移动通信系统(英文：Universal Mobile Telecommunications System，简称：UMTS)陆地无线接入网(英文：UMTS Terrestrial Radio Access Network，简称：UTRAN)或增强型数据速率GSM(英文Enhanced Data Rate for GSM Evolution，简称：EDGE)演进无线接入网(英文：GSM EDGE Radio Access Network，简称：GERAN)，以及IMS网络。
其中，源E-UTRAN为LTE网络系统的接入网部分，包括eNodeB等。
MME用于执行PS承载划分功能，区分VoIP承载和非VoIP承载，发起到目标小区的SRVCC的切换，协调PS切换和SRVCC切换的同步执行，执行非语音承载悬置和非语音承载恢复。
SRVCC IWF，处理MME通过Sv接口发送的语音业务切换准备请求，发起IMS域到CS域的会话切换，处理CS切换和会话切换流程。
HSS，在SRVCC方案中除了传统的功能外还需要存储一个特殊参数会话迁移号(英文：Sess ion Transfer Number Single-Radio，简称：STN-SR)。在UE附着过程中，HSS会通过将STN-SR参数插入签约用户数据消息传给MME，再转发至MSC。
以上，仅对SRVCC中主要的几个网元进行简要说明，其他的可参考现有技术说明，本申请在此不再赘述。
基于上述的网络系统架构图，当UE从LTE网络移动至2G/3G网络，向E-UTRAN上报异系统检测事件的测量报告后，触发SRVCC切换(英文：Handover，简称：HO)。具体的SRVCC切换流程如图2所示，包括：
1、UE向源eNodeB发送异系统检测事件的测量报告。
其中，异系统检测事件包括B1和B2事件。
B1事件为：异无线接入类型(英文：Radio Access Type，简称：RAT)小区的参考信号接收功率(英文：Reference Signal Receiving Power，简称：RSRP)值进行测量；B1事件测量报告的上报条件为：异RAT小区的RSRP值比绝对门限阈值高。
B2事件为：对服务小区和异RAT小区的RSRP值进行测量；B2事件测量报告的上报条件为：服务小区的RSRP值比绝对门限阈值1低且邻区的RSRP值比绝对门限阈值2高。
其中，异RAT小区是指与UE当前的服务小区属于不同网络制式的邻区。
2、源eNodeB根据切换判决算法，判决发起SRVCC切换到UTRAN/GERAN。
3、源eNodeB向源MME发送切换需求handover required，并标识该切换为SRVCC。
4、收到SRVCC的切换需求后，源MME根据QoS分类标识(英文：QoS Class Identifier，简称：QCI)将语音承载(QCI＝1)和其他的PS承载进行分离。
5、接着源MME执行PS-CS切换程序。源MME根据handover required中携带的目标ID选择目标SRVCC IWF(即SRVCC IWF)，发送PS-CS请求到SRVCC IWF。PS-CS请求中包含STN-SR、移动用户国际综合业务数字网(英文：Integrated Services Digital Network，简称：ISDN/公共交换电话网(英文：Public Switched Telephone Network，简称：PSTN)号(英文：Mobile Subscriber International ISDN/PSTN number，简称：MSISDN)、MME上下文等信息。
6、SRVCC IWF收到PS-CS切换请求后，向目标MSC发送准备切换请求。
7、目标MSC向目标UTRAN/EGRAN的无线网络子系统(英文：Radio Network Subsystem，简称：RNS)，即目标基站发送重定向请求，请求分配CS无线承载资源。
8、无线承载资源分配完毕，目标MSC向SRVCC IWF发送切换准备响应，分配切换号码。
9、SRVCC IWF使用切换号码与目标MSC建立电路域承载连接。
10、SRVCC IWF发起会话转移过程，IMS网络执行会话转移过程，并更新远端。其中，会话转移过程包括：IMS网络中的SCC AS判断当前的呼叫状态与UE能力是否匹配，如果匹配则向SRVCC IWF发送的响应为200ok，否则为失败OXX，表示初始会话转移失败。
会话转移过程执行完毕后，IMS网络向SRVCC IWF发送响应消息。
11、SRVCC IWF执行UE接入。
SRVCC IWF向源MME发送PS-CS切换响应，指示UE接入。MME发送切换命令HO Command至eNodeB。
UE开始尝试接入CS网络，目标基站给目标MSC发送重定向监测Relocation Detect消息，表示UE已经检测到新信道，已经具备接入新的无线信道的条件，但尚未真正接入。当目标MSC收到目标基站上报的Relocation Detect消息后，通过局间映射MAP信令发送映射处理接入信令MAP PROCESS ACCESS SIGNALLING IND消息给SRVCC IWF。当UE成功接入CS网络或接入失败后，目标基站给目标MSC发送重定向完成Relocation Complete消息，通知目标MSC切换完成。当目标MSC收到上报的重定向完成Relocation Complete消息后，通过局间MAP信令发送映射发送结束信令MAP SEND END SIGNAL IND消息给SRVCC IWF。其中，在UE不具备SRVCC能力时，UE不会接入目标CS域网络。
12、SRVCC IWF接收到IMS网络发送的响应消息和MAP SEND END SIGNAL IND(即，表示UE切换完成消息)后，向源MME发送PS-CS切换完成响应。
SRVCC IWF发送PS-CS完成通知消息SRVCC PS to CS Complete Notification消息给源MME，通知源MME切换已经完成。
13、源MME释放PS专用承载。
SRVCC IWF接收到IMS网络发送的响应消息和UE切换完成消息后，向源MME发送PS-CS完成通知消息。MME接收到PS-CS完成通知消息后，释放UE在IMS网络的PS专用承载。其中，若初始会话转移成功，且UE接入成功，则SRVCC IWF可以通过PS-CS完成通知消息指示切换成功；若初始会话转移失败或UE接入失败，则SRVCC IWF可以通过PS-CS完成通知消息指示切换失败。
从以上过程来看，在目标网络已经为UE预留无线资源后，由于PS-CS切换失败，导致目标网络电路域的无线承载资源浪费；而在eNodeB发起SRVCC切换后，不管切换成功还是失败MME都会释放掉PS专用承载，这样在切换失败的情况下会导致UE掉话/呼损的问题。
鉴于以上问题，本申请提出了一种异系统检测事件的控制方法和UE，UE侧根据UE记录的IMS网络的SRVCC能力，UE自身的SRVCC能力，以及UE当前的呼叫状态，在确定UE及IMS网络的SRVCC能力支持UE在当前的呼叫状态进行SRVCC切换后，才向eNodeB上报满足上报条件的异系统检测事件的测量报告，触发eNodeB发送SRVCC切换，从而可以尽可能避免由于UE和IMS网络的SRVCC能力不支持UE当前呼叫状态致使SRVCC切换失败的情况下，目标网络电路域无线资源浪费，UE掉话/呼损的问题。
为了便于本领域技术人员的理解，本发明通过以下实施例对本发明提供的技术方案的具体实现过程进行说明。
实施例一
本发明实施例提供了一种异系统检测事件的控制方法，如图3所示，该方法包括：
301、用户设备UE接收基站eNodeB发送的异系统检测事件请求消息。
302、所述UE获取所述UE当前的呼叫状态，及IMS网络和所述UE的SRVCC能力。
303、若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。
在UE和eNodeB的无线承载建立后，源eNodeB向UE下发无线资源连接重配置消息RRC Connection Reconfiguration，其中包括源eNodeB配置的测量配置消息，用于控制UE连接态的测量过程，所述测量配置消息包括异系统检测事件的测量。
在UE接收到eNodeB下发的异系统检测事件请求消息后，UE获取自身当前的呼叫状态，以及UE记录的IMS网络的SRVCC能力。
其中，UE根据自身是否有呼叫，有几路呼叫，呼叫处于哪个阶段确定UE当前的呼叫状态。若UE当前没有语音呼叫，则UE当前的呼叫状态为振铃前(originating calls in pre-alerting phase)；若当前只有一路语音呼叫，且对端还未摘机则UE当前的呼叫状态为振铃态(calls in alerting phase)；若对端当前只有一路语音呼叫，且对端已摘机接通则UE当前的呼叫状态为摘机态，也可称为稳态；若当前有几路语音呼叫(其中，几路呼叫中的 每路呼叫或处于振铃态，或处于摘机态)，则UE当前的呼叫状态为多路呼叫态(mid-cal l)。需要说明的是，UE如何确定当前有没有语音呼叫，有几路呼叫，呼叫处于哪个阶段，本领域技术人员可以根据现有技术的指导实现，本申请在此不再赘述。
其中，UE及IMS网络的SRVCC能力包括：支持振铃前单射频语音连续(英文：SRVCC before Alerting，简称：bSRVCC)、支持振铃态单射频语音连续(英文：SRVCC in Alerting，简称：aSRVCC)、支持增强的单射频语音连续(英文：Enhanced Single Radio Voice Call Continuity，简称：eSRVCC)，支持多路呼叫单射频语音连续(英文：mid-call Single Radio Voice Call Cont inuity，简称：mid-call SRVCC)。
需要说明的是，IMS网络的SRVCC能力可以理解为IMS网络包括的网元的SRVCC能力。其中IMS网络的网元包括：服务中心和连续应用服务器(英文：Service Centralization and Continuity Application Server，简称：SCC AS)，接入转移控制功能(英文：Access Transfer Control Functionality，简称：ATCF)，呼叫会话控制功能(英文：Call Session Control Funct ion，简称：CSCF)，多媒体资源功能控制器(英文：Multimedia Resource Function Controller，简称：MRFC)，多媒体资源功能处理器(英文：Multimedia Resource Function Processor，简称：MRFP)等，本申请在此不再一一赘述。
其中，UE可以在注册过程中记录IMS网络是否支持SRVCC或eSRVCC、以及bSRVCC、aSRVCC和mid-call SRVCC的能力；当然，UE也可以在之前的呼叫过程中记录IMS网络是否支持bSRVCC、aSRVCC和mid-cal l SRVCC。
可选的，在之前的呼叫过程中，针对UE发送的会话初始协议邀请(英文：Session Initiation Protocol，简称：SIP)invite消息的SIP 1xx或SIP 2xx响应中携带有IMS网络中SCC AS的SRVCC能力。
在所述UE获取所述UE当前的呼叫状态，及所述IMS网络和所述UE的SRVCC能力之后，所述UE判断所述IMS网络和所述UE的SRVCC能力是否支持所述UE在所述当前呼叫状态下进行SRVCC切换。若支持，在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告，触发eNodeB发起SRVCC切换。若不支持，所述UE确定不上报所述测量报告，流程至此结束。
需要说明的是，所述UE接收到eNodeB发送的异系统检测事件请求消息后，可以开始执行异系统检测事件，如根据eNodeB配置的测量周期进行测量。在确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。在确定所述IMS网络和所述UE的SRVCC能力不支持所述UE在所述当前呼叫状态下进行SRVCC切换，即使所述异系统检测事件的测量报告满足上报条件时，所述UE也不会向所述eNodeB上报所述测量报告。
需要说明的是，在确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼 叫状态下进行SRVCC切换，所述异系统检测事件的测量报告满足上报条件可以理解为：若在确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换前，所述UE执行了多次异系统检测事件，满足上报条件的测量报告是指所述UE最新执行的异系统检测事件的检测报告。
可以理解的是，所述UE也可以在确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换的情况下，才开始执行异系统检测事件。这样在所述异系统检测事件的测量报告满足上报条件时，所述UE才会向所述eNodeB上报所述测量报告。
优选的，在所述UE判断所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，所述UE开始进行异系统检测事件的测量并获得测量报告；在所述测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。这样可以避免UE周期性执行异系统检测事件时频繁离开原信道进行异系统测量的问题。
可选的，若所述UE当前的呼叫状态为振铃前，所述UE判断所述IMS网络和所述UE的SRVCC能力是否支持bSRVCC。若支持bSRVCC，则确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换。
可选的，若所述UE当前的呼叫状态为振铃态，所述UE判断所述IMS网络和所述UE的SRVCC能力是否支持aSRVCC。若支持aSRVCC，则确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换。
可选的，若所述UE当前的呼叫状态为多路呼叫，所述UE判断所述IMS网络和所述UE的SRVCC能力是否支持mid-call SRVCC。若支持mid-call SRVCC，则确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换。
可选的，若所述UE当前的呼叫状态为摘机态，所述UE判断所述IMS网络和所述UE的SRVCC能力是否支持eSRVCC或SRVCC。若支持eSRVCC或SRVCC，则确定所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换。
可选的，在用户设备UE接收基站eNodeB发送的异系统检测事件请求消息之前，该方法还包括：
所述UE接收所述eNodeB发送的同系统检测事件请求消息；
所述UE根据所述同系统检测事件请求消息进行测量并向所述eNodeB发送测量报告，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
其中，上述的同系统检测事件包括A1、A2、A3、A4和A5事件。所述同系统事件请求消息中包括eNodeB下发的同系统检测事件中任一事件。
在所述同系统事件的测量报告指示所述UE的服务小区的信道质量小于预设阈值，即服务小区的信道质量较差，所述eNodeB向所述UE发送异系统检测事件。
以下，对本申请中UE和eNodeB的交互过程进行说明，如图4所示，该方法包括：
401、UE接收所述eNodeB发送的同系统检测事件请求消息。
402、UE根据所述同系统检测事件请求消息进行测量并向所述eNodeB发送测量报告，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
403、UE接收基站eNodeB发送的异系统检测事件请求消息。
404、UE获取所述UE当前的呼叫状态，及所述IMS网络和所述UE的SRVCC能力。
405、UE判断所述IMS网络和所述UE的SRVCC能力是否支持所述UE在所述当前呼叫状态下进行SRVCC切换。
若支持，则执行步骤406；否则，所述UE确定不上报测量报告可以是所述UE不执行异系统检测事件，从而不上报测量报告；也可以理解为所述UE执行异系统检测事件，在所述异系统检测事件的测量报告满足上报条件时，不上报测量报告，流程至此结束。
406、在所述异系统检测事件的测量报告满足上报条件时，所述UE向所述eNodeB上报所述测量报告。
407、eNodeB发起SRVCC切换，执行SRVCC切换流程。
基于上述方案，本申请提出的一种异系统检测事件的控制方法，由于UE侧根据UE记录的IMS网络的SRVCC能力，UE自身的SRVCC能力，以及UE当前的呼叫状态，在确定UE及IMS网络的SRVCC能力支持UE在当前的呼叫状态进行SRVCC切换后，才向eNodeB上报满足上报条件的异系统检测事件的测量报告，触发eNodeB发送SRVCC切换，从而可以避免提前占用目标网络CS域无线资源，导致无线资源浪费的问题，同时也避免了UE的掉话/呼损问题。
实施例二、
本发明实施例提供了一种UE50，如图5所示，该UE包括：接收单元501、获取单元502、上报单元503；
所述接收单元501，用于接收基站eNodeB发送的异系统检测事件请求消息；
所述获取单元502，用于获取所述UE当前的呼叫状态，及因特网协议多媒体子系统IMS网络和所述UE的单射频语音连续SRVCC能力；
所述上报单元503，用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，向所述eNodeB上报所述测量报告，用于触发所述eNodeB发起SRVCC切换。
可选的，所述上报单元503，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，进行异系统检测事件的测量并获得测量报告；
在所述测量报告满足上报条件时，向所述eNodeB上报所述测量报告。
可选的，所述UE还包括：测量单元504，所述测量单元504用于在所述接收单元501接收基站eNodeB发送的异系统检测事件请求消息之后，进行异系统检测事件的测量并获得测量报告；
所述上报单元503，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，判断所述测量报告是否满足所述上报条件；
若满足，向所述eNodeB上报所述测量报告。
可选的，所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换包括：
所述当前的呼叫状态为振铃前；
所述UE判断所述IMS网络和所述UE的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
所述当前的呼叫状态为振铃态；
所述UE判断所述IMS网络和所述UE的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
所述当前的呼叫状态为多路呼叫态；
所述UE判断所述IMS网络和所述UE的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
所述当前的呼叫状态为摘机态；
所述UE判断所述IMS网络和所述UE的SRVCC能力支持增强的单射频语音连续eSRVCC。
可选的，在所述接收单元501接收基站eNodeB发送的异系统检测事件请求消息之前，所述接收单元501，还用于接收所述eNodeB发送的同系统检测事件请求消息；
所述测量单元504，还用于根据所述同系统检测事件请求消息进行测量；
所述上报单元505，还用于将所述测量单元测量的所述同系统检测事件的测量报告发送给所述eNodeB，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
需要说明的是，本实施例与实施例一对应的装置的实施例，本实施中的技术特征描述及方案的说明与实施例一可相互参考引用，本实施例在此不再赘述。
基于上述方案，本申请提出的一种UE，由于UE侧根据UE记录的IMS网络的SRVCC能力，UE自身的SRVCC能力，以及UE当前的呼叫状态，在确定UE及IMS网络的SRVCC能力支持UE在当前的呼叫状态进行SRVCC切换后，才向eNodeB上报满足上报条件的异系统检测事件的测量报告，触发eNodeB发起SRVCC切换，从而可以避免提前占用目标网络CS域无线资源，导致无线资源浪费的问题，同时也避免了UE掉话/呼损的问题。
实施例三
本发明实施例提供一种UE 60，如图6所示，所述UE 60包括处理器601、存储器602、总线603和接收器604、发送器605。其中，处理器601、存储器602和接收器604、发送器605之间通过总线603连接并完成相互间的通信。
处理器601可能为单核或多核中央处理单元，或者为特定集成电路，或者为被配置成实施本发明实施例的一个或多个集成电路。
存储器602可以为高速随机存取存储器(Random Access Memory，简称：RAM)，也可以 为非易失性存储器(non-volatile memory)，例如至少一个磁盘存储器。
存储器2102用于存储计算机执行指令6021。具体的，计算机执行指令21021中可以包括程序代码。
其中，所述接收器604，用于接收基站eNodeB发送的异系统检测事件请求消息；
所述处理器601，用于获取所述UE当前的呼叫状态，及因特网协议多媒体子系统IMS网络和所述UE的单射频语音连续SRVCC能力；
并判断所述IMS网络和所述UE的SRVCC能力是否支持所述UE在所述当前呼叫状态下进行SRVCC切换，若支持判断所述异系统检测事件的测量报告是否满足上报条件；
所述发送器605，用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，且所述测量报告满足上报条件，向所述eNodeB上报所述测量报告，用于触发所述eNodeB发起SRVCC切换。
可选的，所述处理器601，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，进行异系统检测事件的测量并获得测量报告。
可选的，所述处理器601，用于在所述接收器604接收基站eNodeB发送的异系统检测事件请求消息之后，进行异系统检测事件的测量并获得测量报告；
所述发送器605，具体用于若所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换，且所述测量报告满足所述上报条件，向所述eNodeB上报所述测量报告。
可选的，所述IMS网络和所述UE的SRVCC能力支持所述UE在所述当前呼叫状态下进行SRVCC切换包括：
所述当前的呼叫状态为振铃前；
所述IMS网络和所述UE的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
所述当前的呼叫状态为振铃态；
所述IMS网络和所述UE的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
所述当前的呼叫状态为多路呼叫态；
所述IMS网络和所述UE的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
所述当前的呼叫状态为摘机态；
所述IMS网络和所述UE的SRVCC能力支持增强的单射频语音连续eSRVCC。
可选的，在用户设备UE接收基站eNodeB发送的异系统检测事件请求消息之前，所述接收器604，还用于接收所述eNodeB发送的同系统检测事件请求消息；
所述处理器601，还用于根据所述同系统检测事件请求消息进行测量；
所述发送器605，还用于将所述测量单元测量的所述同系统检测事件的测量报告发送给所述eNodeB，所述测量报告指示所述UE的服务小区的信道质量小于预设阈值。
需要说明的是，本实施例与实施例一对应的装置的实施例，本实施中的技术特征描述及方案的说明与实施例一可相互参考引用，本实施例在此不再赘述。
基于上述方案，本申请提出的一种UE，由于UE侧根据UE记录的IMS网络的SRVCC能力，UE自身的SRVCC能力，以及UE当前的呼叫状态，在确定UE及IMS网络的SRVCC能力支持UE在当前的呼叫状态进行SRVCC切换后，才向eNodeB上报满足上报条件的异系统检测事件的测量报告，触发eNodeB发起SRVCC切换，从而可以避免提前占用目标网络CS域无线资源，导致无线资源浪费的问题，同时也避免了UE掉话/呼损的问题。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的终端和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的终端和方法，可以通过其它的方式实现。例如，以上所描述的终端实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random Access Memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种异系统检测事件的控制方法，其特征在于，该方法包括：
    用户设备接收基站发送的异系统检测事件请求消息；
    所述用户设备获取所述用户设备当前的呼叫状态，及因特网协议多媒体子系统网络和所述用户设备的单射频语音连续SRVCC能力；
    若所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述用户设备向所述基站上报所述测量报告，用于触发所述基站发起SRVCC切换。
  2. 根据权利要求1所述的方法，其特征在于，若所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述用户设备向所述基站上报所述测量报告包括：
    所述用户设备判断所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，所述用户设备进行异系统检测事件的测量并获得测量报告；
    在所述测量报告满足上报条件时，所述用户设备向所述基站上报所述测量报告。
  3. 根据权利要求1所述的方法，其特征在于，在用户设备接收基站发送的异系统检测事件请求消息之后，该方法还包括：
    所述用户设备进行异系统检测事件的测量并获得测量报告；
    若所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，所述用户设备向所述基站上报所述测量报告包括：
    所述用户设备判断所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，所述用户设备判断所述测量报告是否满足所述上报条件；
    若满足，所述用户设备向所述基站上报所述测量报告。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换包括：
    所述当前的呼叫状态为振铃前；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
    所述当前的呼叫状态为振铃态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
    所述当前的呼叫状态为多路呼叫态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
    所述当前的呼叫状态为摘机态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持增强的单射频语音连续eSRVCC。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，在用户设备接收基站发送的异系统检测事件请求消息之前，该方法还包括：
    所述用户设备接收所述基站发送的同系统检测事件请求消息；
    所述用户设备根据所述同系统检测事件请求消息进行测量并向所述基站发送测量报告，所述测量报告指示所述用户设备的服务小区的信道质量小于预设阈值。
  6. 一种用户设备，其特征在于，该用户设备包括：接收单元、获取单元、上报单元；
    所述接收单元，用于接收基站发送的异系统检测事件请求消息；
    所述获取单元，用于获取所述用户设备当前的呼叫状态，及因特网协议多媒体子系统网络和所述用户设备的单射频语音连续SRVCC能力；
    所述上报单元，用于若所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，在所述异系统检测事件的测量报告满足上报条件时，向所述基站上报所述测量报告，用于触发所述基站发起SRVCC切换。
  7. 根据权利要求6所述的用户设备，其特征在于，所述上报单元，具体用于若所述IMS因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，进行异系统检测事件的测量并获得测量报告；
    在所述测量报告满足上报条件时，向所述基站上报所述测量报告。
  8. 根据权利要求6所述的用户设备，其特征在于，所述用户设备还包括：测量单元，所述测量单元用于在所述接收单元接收基站发送的异系统检测事件请求消息之后，进行异系统检测事件的测量并获得测量报告；
    所述上报单元，具体用于若所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换，判断所述测量报告是否满足所述上报条件；
    若满足，向所述基站上报所述测量报告。
  9. 根据权利要求6-8任一项所述的用户设备，其特征在于，所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持所述用户设备在所述当前呼叫状态下进行SRVCC切换包括：
    所述当前的呼叫状态为振铃前；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持振铃前单射频语音连续bSRVCC；或
    所述当前的呼叫状态为振铃态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持振铃态单射频语音连续aSRVCC；或
    所述当前的呼叫状态为多路呼叫态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持多路呼叫单射频语音连续mid-call SRVCC；或
    所述当前的呼叫状态为摘机态；
    所述因特网协议多媒体子系统网络和所述用户设备的SRVCC能力支持增强的单射频语音连续eSRVCC。
  10. 根据权利6-9任一项所述的用户设备，其特征在于，在所述接收单元接收基站发送的异系统检测事件请求消息之前，所述接收单元，还用于接收所述基站发送的同系统检测事件请求消息；
    所述测量单元，还用于根据所述同系统检测事件请求消息进行测量；
    所述上报单元，还用于将所述测量单元测量的所述同系统检测事件的测量报告发送给所述基站，所述测量报告指示所述用户设备的服务小区的信道质量小于预设阈值。
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