WO2016101575A1 - 一种语音业务切换方法及设备 - Google Patents

一种语音业务切换方法及设备 Download PDF

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Publication number
WO2016101575A1
WO2016101575A1 PCT/CN2015/082709 CN2015082709W WO2016101575A1 WO 2016101575 A1 WO2016101575 A1 WO 2016101575A1 CN 2015082709 W CN2015082709 W CN 2015082709W WO 2016101575 A1 WO2016101575 A1 WO 2016101575A1
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Prior art keywords
user plane
network
target
enodeb
plane connection
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PCT/CN2015/082709
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English (en)
French (fr)
Inventor
陈立福
徐日东
Original Assignee
华为技术有限公司
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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 EP15871650.6A priority Critical patent/EP3236695B1/en
Publication of WO2016101575A1 publication Critical patent/WO2016101575A1/zh
Priority to US15/632,079 priority patent/US10616812B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/13—Cell handover without a predetermined boundary, e.g. virtual cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/14—Backbone network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the present invention relates to the field of communications, and in particular, to a voice service switching method and device.
  • VoLTE Voice Over LTE
  • IMS Internet Protocol Multimedia System
  • the network side of the LTE system refers to an evolved base station (English: Evolved NodeB, abbreviated as: eNodeB) to a packet data network gateway (English: Packet Data Network Gateway, referred to as An abnormality occurs in the network between the PGWs, which may result in a decrease in the reliability of the voice service of the UE.
  • the network between the serving gateway (English: Serving Gateway, SGW) and the PGW is interrupted, the ongoing voice service interruption of the UE may result, and the reliability of the voice service of the UE may be reduced.
  • the present invention provides a method and a device for switching a voice service, which solves the problem that the reliability of the voice service of the UE is reduced due to an abnormality on the network side of the LTE network.
  • a first aspect of the present invention provides a method for switching a voice service, including:
  • the mobility management entity MME determines that the network side of the Long Term Evolution (LTE) network is different A network bearer of the target user equipment UE is established on the network side of the LTE network;
  • LTE Long Term Evolution
  • the mobility management entity MME determines that an abnormality exists on a network side of a long term evolution LTE network, including:
  • the MME determines that the target UE cannot be handed over from the eNodeB to the target eNodeB.
  • the mobility management entity MME determines that the network side of the Long Term Evolution (LTE) network is abnormal, including:
  • connection abnormality message is used to feedback that the user plane connection is abnormal;
  • connection abnormality message includes: at least one evolved packet system EPS bearer identifier of the UE that meets the predetermined condition;
  • the MME Before the MME sends the single radio bearer voice call continuity SRVCC handover request message carrying the identifier of the target UE to the evolved base station eNodeB, the MME further includes:
  • the MME Determining, by the MME, that the UE with the voice bearer established in the network side of the LTE network is the target UE according to the EPS bearer identifier of the UE that meets the predetermined condition;
  • the MME determines, according to the EPS bearer identifier of the UE that meets the predetermined condition, that the UE that has established a voice bearer in the network side of the LTE network and supports the SRVCC handover is the target UE.
  • the connection abnormality message is that the first network device detects The user plane connection between the body and the second network device is sent after an abnormality occurs;
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • connection abnormality message is sent by the first network device after determining that it needs to be restarted
  • the UE that meets the predetermined condition is a UE that performs service transmission through a user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- The threshold, the user plane connection delay is greater than the second preset threshold, and the user plane connection jitter is greater than the third preset threshold; the first preset threshold is a preset packet loss rate using the user plane connection.
  • the second preset threshold is a preset threshold for determining that the user plane connection is congested by using a delay of the user plane connection
  • the third pre- The threshold is set to a preset threshold using the user plane connection to determine a threshold for congestion of the user plane connection.
  • a second aspect of the present invention provides a method for switching a voice service, including:
  • the first network device detects that there is an abnormality on the network side of the Long Term Evolution (LTE) network;
  • LTE Long Term Evolution
  • the first network device sends a connection abnormality message to the mobility management entity MME; the connection abnormality message is used to feedback that the user plane connection is abnormal; the connection abnormality message includes: the at least one EPS bearer of the UE that meets the predetermined condition Logo.
  • the first network device detects that an abnormality occurs on a network side of the LTE network, including:
  • the first network device detects that an abnormality occurs in a user plane connection between itself and the second network device;
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the first network device detects that the network side of the LTE network is abnormal, including:
  • the first network device detects that it needs to restart
  • the UE that meets the predetermined condition is a UE that performs service transmission through a user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- The threshold, the user plane connection delay is greater than the second preset threshold, and the user plane connection jitter is greater than the third preset threshold; the first preset threshold is a preset packet loss rate using the user plane connection.
  • the second preset threshold is a preset threshold for determining that the user plane connection is congested by using a delay of the user plane connection
  • the third pre- The threshold is set to a preset threshold using the user plane connection to determine a threshold for congestion of the user plane connection.
  • a third aspect of the present invention provides a method for switching a voice service, including:
  • the evolved base station eNodeB receives a single radio bearer voice call continuity SRVCC handover request message that carries the identity of the target user equipment UE and is sent by the mobility management entity MME;
  • the eNodeB switches voice services of the target UE from a long term evolution LTE network to a circuit switched CS network.
  • the eNodeB Before receiving the single radio bearer voice call continuity SRVCC handover request message that is sent by the mobility management entity MME and carrying the identifier of the target user equipment UE, the eNodeB includes:
  • the eNodeB sends a handover request message to the MME, where the handover request message is used to notify the MME that the target UE needs to be handed over from the eNodeB to the target eNodeB.
  • a second possible implementation manner before the eNodeB switches the voice service of the target UE from the long term evolution LTE network to the circuit switched CS network, Also includes:
  • the eNodeB determines that it cannot continue to provide voice services for the target UE.
  • the voice service of the target UE is used in the eNodeB from a long term evolution LTE network.
  • LTE long term evolution
  • the eNodeB switches the voice service of the target UE from the long term evolution LTE network to the circuit switched CS network, including:
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the method before the eNodeB receives the wireless measurement report of the CS network sent by the target UE, the method further includes:
  • the eNodeB sends a notification message to the target UE, where the notification message is used to notify the target UE to report a wireless measurement report of the CS network.
  • a fourth aspect of the present invention provides a voice service switching method, including:
  • the evolved base station eNodeB detects whether the user plane connection between itself and the serving gateway SGW is abnormal;
  • the eNodeB When it is detected that the user plane connection between itself and the SGW is abnormal, The eNodeB acquires an evolved packet system EPS bearer identifier of a UE that satisfies a predetermined condition; the UE that satisfies a predetermined condition is a UE that performs service transmission by using a user plane connection between the eNodeB and the SGW;
  • the UE of the continuous SRVCC handover is determined to be the target UE;
  • the eNodeB switches voice services of the target UE from a long term evolution LTE network to a circuit switched CS network.
  • the method before the eNodeB switches the voice service of the target UE from the long term evolution LTE network to the circuit switched CS network, the method further includes:
  • the eNodeB switches the voice service of the target UE from the long term evolution LTE network to the circuit switched CS network, including:
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the method before the eNodeB receives the wireless measurement report sent by the target UE, the method further includes:
  • the eNodeB sends a notification message to the target UE, where the notification message is used to notify the target UE to report a wireless measurement report of the CS network.
  • the abnormality of the user plane connection includes any one of the following: a user plane connection occurs. Interruption, user plane connection congestion.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- Set the threshold and the delay of the user plane connection to be greater than the first
  • the second preset threshold, the jitter of the user plane connection is greater than the third preset threshold
  • the first preset threshold is a preset threshold of using the user plane connection packet loss rate to determine the congestion of the user plane connection congestion.
  • the second preset threshold is a preset threshold for determining that the user plane connection is congested by using a delay of the user plane connection
  • the third preset threshold is a preset use of the user plane.
  • the jitter of the connection determines the threshold at which the user plane connection is congested.
  • a fifth aspect of the present invention provides a mobility management entity MME, where the MME includes: a first determining unit and a first sending unit;
  • the first determining unit is configured to determine that the network side of the long-term evolution LTE network is abnormal; the network side of the LTE network establishes a voice bearer of the target user equipment UE;
  • the first sending unit is configured to send, to the evolved base station eNodeB, a single radio bearer voice call continuity SRVCC handover request message carrying the identifier of the target UE, so that the eNodeB sends the voice service of the target UE from the
  • the LTE network switches to a circuit switched CS network.
  • the first determining unit includes: a first receiving module and a first determining module;
  • the first receiving module is configured to receive a handover request message sent by the eNodeB, where the handover request message is used to notify the MME that the target UE needs to be handed over from the eNodeB to a target eNodeB;
  • the first determining module is configured to determine that the target UE cannot be handed over from the eNodeB to the target eNodeB.
  • the MME further includes: a second determining unit, where the first determining unit includes: a second receiving module;
  • the second receiving module is configured to receive a connection abnormality message sent by the first network device, where the connection abnormality message is used to feed back an abnormality of the user plane connection, and the connection abnormality message includes: at least one evolved UE that satisfies a predetermined condition Packet system EPS bearer identifier;
  • the second determining unit is configured to, in the first sending unit, an evolved base station Before the eNodeB sends the single radio bearer voice call continuity SRVCC handover request message carrying the identifier of the target UE, the voice bearer is established in the network side of the LTE network according to the EPS bearer identifier of the UE that meets the predetermined condition. Determining, by the UE, the target UE, or determining, according to the EPS bearer identifier of the UE that meets the predetermined condition, a UE that has established a voice bearer in the network side of the LTE network and supports SRVCC handover as the target UE. .
  • the second receiving module is configured to receive the connection abnormality message that is sent by the first network device after detecting that an abnormality occurs in a user plane connection between the first network device and the second network device;
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the second receiving module is specifically configured to receive the connection abnormality message that is sent by the first network device after determining that it needs to be restarted;
  • the UE that meets the predetermined condition is a UE that performs service transmission through a user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- The threshold, the user plane connection delay is greater than the second preset threshold, and the user plane connection jitter is greater than the third preset threshold; the first preset threshold is a preset packet loss rate using the user plane connection.
  • the second preset threshold is a preset threshold for determining that the user plane connection is congested by using a delay of the user plane connection
  • the third pre- Assume The threshold is a preset threshold using the user plane connection to determine a threshold for congestion of the user plane connection.
  • the sixth aspect of the present invention provides a first network device, where the first network device includes: a first detecting unit, a first acquiring unit, and a second sending unit;
  • the first detecting unit is configured to detect that an abnormality occurs on a network side of the Long Term Evolution (LTE) network;
  • LTE Long Term Evolution
  • the first obtaining unit is configured to acquire at least one evolved packet system EPS bearer identifier of the user equipment UE that meets a predetermined condition;
  • the second sending unit is configured to send a connection abnormality message to the mobility management entity MME, where the connection abnormality message is used to feedback that the user plane connection is abnormal; the connection abnormality message includes: the at least one UE that meets a predetermined condition EPS bearer logo.
  • the first detecting unit is configured to detect that an abnormality occurs in a user plane connection between the first network device and the second network device;
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the first detecting unit is specifically configured to detect that it needs to restart
  • the UE that meets the predetermined condition is a UE that performs service transmission through a user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- The threshold, the delay of the user plane connection is greater than the second preset threshold, and the jitter of the user plane connection is greater than the third preset threshold; the first preset The maximum value of the threshold is the packet loss rate of the user plane connection when the user terminal UE cannot use the user plane connection; the maximum value of the second preset threshold is when the UE cannot use the user plane connection a delay of the user plane connection; a maximum value of the third preset threshold is a jitter of the user plane connection when the UE cannot use the user plane connection.
  • a seventh aspect of the present invention provides an evolved base station eNodeB, where the eNodeB includes: a first receiving unit and a first switching unit;
  • the first receiving unit is configured to receive, by the mobility management entity MME, a single radio bearer voice call continuity SRVCC handover request message carrying an identifier of the target user equipment UE;
  • the first switching unit is configured to switch the voice service of the target UE received by the first receiving unit from a long term evolution LTE network to a circuit switched CS network.
  • the eNodeB further includes: a third sending unit;
  • the third sending unit is configured to send, to the MME, the first receiving unit before receiving the single radio bearer voice call continuity SRVCC handover request message that carries the identifier of the target user equipment UE sent by the mobility management entity MME And a handover request message, where the handover request message is used to notify the MME that the target UE needs to be handed over from the eNodeB to the target eNodeB.
  • the eNodeB further includes: a third determining unit;
  • the third determining unit is configured to determine that the first switching unit cannot continue to provide voice services for the target UE before the first switching unit switches the voice service of the target UE from the long term evolution LTE network to the circuit switched CS network.
  • the eNodeB further includes: a second receiving unit;
  • the second receiving unit is configured to: before the first switching unit switches the voice service of the target UE from a long term evolution LTE network to a circuit switched CS network, Receiving a wireless measurement report of the CS network sent by the target UE;
  • the first switching unit is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network received by the second receiving unit.
  • the eNodeB further includes: a fourth sending unit;
  • the fourth sending unit is configured to send a notification message to the target UE before the second receiving unit receives the wireless measurement report of the CS network that is sent by the target UE, where the notification message is used to notify the The target UE reports a wireless measurement report of the CS network.
  • An eighth aspect of the present invention provides an evolved base station eNodeB, where the eNodeB includes: a second detecting unit, a second acquiring unit, a fourth determining unit, and a second switching unit;
  • the second detecting unit is configured to detect whether an abnormality occurs in a user plane connection between the eNodeB and the serving gateway SGW;
  • the second acquiring unit is configured to: when the second detecting unit detects that an abnormality occurs in the user plane connection between the eNodeB and the SGW, acquire an evolved packet system EPS bearer identifier of a UE that meets a predetermined condition;
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the eNodeB and the SGW;
  • the fourth determining unit is configured to determine, according to the EPS bearer identifier of the UE that is obtained by the second acquiring unit, the UE that has established the voice bearer as the target UE, or obtain the target UE according to the second acquiring unit.
  • the EPS bearer identifier of the UE, the UE that establishes the voice bearer and supports the single radio bearer voice call continuity SRVCC handover is determined as the target UE;
  • the second switching unit is configured to switch the voice service of the target UE determined by the fourth determining unit from a long term evolution LTE network to a circuit switched CS network.
  • the eNodeB further includes: a third receiving unit;
  • the third receiving unit is configured to receive the wireless of the CS network sent by the target UE before the second switching unit switches the voice service of the target UE from a long term evolution LTE network to a circuit switched CS network. measurement report;
  • the second switching unit is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network received by the third receiving unit.
  • the eNodeB further includes: a fifth sending unit;
  • the fifth sending unit is configured to send a notification message to the target UE before the third receiving unit receives the wireless measurement report sent by the target UE, where the notification message is used to notify the target UE to report the location A wireless measurement report for the CS network.
  • the abnormality of the user plane connection includes any one of the following: a user plane connection occurs. Interruption, user plane connection congestion.
  • the congestion of the user plane connection meets at least one of the following conditions: a packet loss ratio of the user plane connection is greater than the first pre- The threshold, the user plane connection delay is greater than the second preset threshold, and the user plane connection jitter is greater than the third preset threshold; the first preset threshold is a preset packet loss rate using the user plane connection.
  • the second preset threshold is a preset threshold for determining that the user plane connection is congested by using a delay of the user plane connection
  • the third pre- The threshold is set to a preset threshold using the user plane connection to determine a threshold for congestion of the user plane connection.
  • the MME after determining that there is an abnormality on the network side of the LTE network, the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB transmits the voice service of the target UE from the LTE network. Switch to the CS network.
  • the MME can instruct the eNodeB to switch the voice service of the target UE from the LTE network to the CS network, thereby preventing the voice service of the UE from being affected by the network side abnormality. The reliability of the voice service of the UE is increased.
  • FIG. 1 is a schematic structural diagram of a system for implementing a voice service switching method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a voice service switching method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a voice service switching method according to another embodiment of the present invention.
  • FIG. 4 is a flowchart of a voice service switching method according to another embodiment of the present invention.
  • FIG. 5 is a flowchart of a voice service switching method according to another embodiment of the present invention.
  • FIG. 6 is a flowchart of a voice service switching method according to another embodiment of the present invention.
  • FIG. 7 is a flowchart of another voice service switching method according to another embodiment of the present invention.
  • FIG. 8 is a flowchart of another voice service switching method according to another embodiment of the present invention.
  • FIG. 9 is a flowchart of another voice service switching method according to another embodiment of the present invention.
  • FIG. 10 is a flowchart of another voice service switching method according to another embodiment of the present invention.
  • FIG. 11 is a flowchart of another voice service switching method according to another embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of an MME according to another embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another MME according to another embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another MME according to another embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a first network device according to another embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of an eNodeB according to another embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of another eNodeB according to another embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of an eNodeB according to another embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of another eNodeB according to another embodiment of the present disclosure.
  • FIG. 20 is a schematic structural diagram of an MME according to another embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of a first network device according to another embodiment of the present invention.
  • FIG. 22 is a schematic structural diagram of an eNodeB according to another embodiment of the present disclosure.
  • FIG. 23 is a schematic structural diagram of an eNodeB according to another embodiment of the present invention.
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately. There are three cases of A and B, and B alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • FIG. 1 a system architecture diagram of a voice service switching method application according to an embodiment of the present invention is shown, where the system includes a UE01, an eNodeB02, a SGW03, a PGW04, and a mobility management entity located in an LTE network (English: Mobility Management Entity) , referred to as MME) 05, Session Border Controller (SBC) located in the IMS network (English: Session Border Controller, SBC) 06, second or third generation in the circuit switching (English: Circuit Switching, CS: network)
  • MME Mobility Management Entity
  • SBC Session Border Controller
  • SBC Session Border Controller
  • SBC Session Border Controller
  • the base station 07 and the single radio bearer voice interworking function English: Single Radio Voice Call Continuity-Interworking Function, SRVCC-IWF
  • the UE01 can perform voice communication with other UEs through the LTE network and the IMS network.
  • the communication quality between the UE 01 and other UEs is affected.
  • the voice service switching method provided by the present invention the voice service of the UE01 can be switched from the LTE network to the CS network, so that the UE 01 performs voice communication with other UEs through the CS network and the IMS network to ensure the communication quality between the UE01 and other UEs. .
  • An embodiment of the present invention provides a method for switching a voice service. As shown in FIG. 2, the method may include:
  • the MME determines that there is an abnormality on the network side of the LTE network.
  • the network side of the LTE network establishes a voice bearer of the target UE.
  • the target UE is a UE whose voice bearer is affected by the network side abnormality of the LTE network.
  • the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the MME After determining that there is an abnormality on the network side of the LTE network, the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB according to the identifier of the target UE carried in the received SRVCC handover request message, according to the The SRVCC handover procedure of the 3rd Generation Partnership Project (3GPP) standard switches the voice service of the target UE from the LTE network to the CS network.
  • 3GPP 3rd Generation Partnership Project
  • the method for switching the voice service provided by the embodiment of the present invention, after determining that there is an abnormality on the network side of the LTE network, the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB switches the voice service of the target UE from the LTE network. Go to the CS network.
  • the MME can instruct the eNodeB to switch the voice service of the target UE from the LTE network to the CS network after the network side of the LTE network is determined to be abnormal, so that the voice service of the UE is affected by the network side abnormality, thereby improving the voice service of the UE. Reliability.
  • the MME determines that the network side of the LTE network is abnormal.
  • the MME may receive the handover request message sent by the eNodeB, and determine that the target UE cannot be handed over from the current eNodeB to the target eNodeB.
  • the handover request message sent by the eNodeB is used to notify the MME that the target UE needs to be handed over from the current eNodeB to the target eNodeB, where the current eNodeB is the eNodeB currently accessed by the target UE, that is, the eNodeB that sends the handover request message to the MME.
  • the MME determines that the network side of the LTE network is abnormal.
  • the MME may receive the connection abnormality message sent by the first network device.
  • connection exception message is used to report that the user plane connection is abnormal, and the connection exception message includes at least one Evolved Packet System (EPS) bearer identifier of the UE that meets the predetermined condition.
  • EPS Evolved Packet System
  • the UE that meets the predetermined condition is a UE that is affected by the service transmission after the abnormality of the user plane connection occurs.
  • the MME In order to ensure the reliability of the voice service of the UE that meets the predetermined condition, the MME needs to determine the target UE from the UE that meets the predetermined condition before performing S102.
  • the process of determining the target UE by the MME is: The MME needs to determine the UE with the voice bearer established in the network side of the LTE network as the target UE according to the EPS bearer identifier of the UE that meets the predetermined condition.
  • the current part of the UE does not support the SRVCC switch. Function in order to be able to The voice service of the UE is switched from the LTE network to the CS network.
  • the process of determining the target UE by the MME is: the MME establishes a voice bearer and supports the SRVCC in the network side of the LTE network according to the EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that is handed over is determined to be the target UE.
  • the MME stores a correspondence between an EPS bearer identifier of the UE and an EPS bearer of the UE, where the EPS bearer may be a voice bearer.
  • the MME may find the quality of service level identifier in the network side of the LTE network according to the EPS bearer identifier of the UE that meets the predetermined condition included in the connection abnormality message.
  • the quality of the service class Identifier (QCI) is equal to 1 for the EPS bearer UE, that is, the UE that finds the voice bearer in the network side of the LTE network, and determines the part of the UE as the target UE.
  • the connection abnormality message received by the MME is that the first network device detects the self and the first The user plane connection between the two network devices is sent after an abnormality occurs.
  • the connection abnormality message includes an EPS bearer identifier of the UE that satisfies the predetermined condition, and the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • connection abnormality message received by the MME is sent by the first network device after determining that it needs to be restarted.
  • the connection abnormality message includes an EPS bearer identifier of the UE that satisfies the predetermined condition, and the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the first network device.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • Another embodiment of the present invention provides a method for switching a voice service. As shown in FIG. 3, the method may include:
  • the first network device detects that the network side of the LTE network is abnormal.
  • the first network device acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the first network device sends a connection abnormality message to the MME.
  • the connection abnormality message is used to feedback that the user plane connection is abnormal, and the connection abnormality message includes at least one EPS bearer identifier of the UE that meets the predetermined condition.
  • the first network device After detecting that the user plane connection is abnormal, acquires the EPS bearer identifier of the UE that meets the predetermined condition, and carries the acquired EPS bearer identifier of the UE that meets the predetermined condition in the connection abnormality message and sends the identifier to the MME.
  • the method for switching the voice service provided by the embodiment of the present invention, after detecting that the user plane connection is abnormal, the first network device acquires the EPS bearer identifier of the UE that meets the predetermined condition, and obtains the acquired EPS bearer of the UE that meets the predetermined condition.
  • the identifier is carried in the connection exception message and sent to the MME, so that the MME determines the target UE according to the EPS bearer identifier of the UE, and instructs the eNodeB to switch the voice service of the target UE from the LTE network to the CS network, thereby preventing the voice service of the UE from being abnormal on the network side.
  • the impact of the voice service of the UE is enhanced.
  • the first network device detects that the network side of the LTE network is abnormal, and the first network device detects that the user plane connection between the user and the second network device is abnormal.
  • the UE that satisfies the predetermined condition in S202 is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the first network device detects that the network side of the LTE network is abnormal.
  • the first network device may detect that the network device needs to restart.
  • the UE that satisfies the predetermined condition in S202 is a UE that performs service transmission through the user plane of the first network device.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • Another embodiment of the present invention provides a method for switching a voice service. As shown in FIG. 4, the method may include:
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the eNodeB After receiving the SRVCC handover request message that is sent by the MME and carrying the identifier of the target UE, the eNodeB performs the voice service of the target UE from the LTE according to the SRVCC handover procedure of the 3GPP standard according to the identifier of the target UE carried in the SRVCC handover request message.
  • the network switches to the CS network.
  • the voice service switching method provided by the embodiment of the present invention, after receiving the SRVCC handover request message that is sent by the MME and carrying the identifier of the target UE, the eNodeB sets the voice service of the target UE according to the identifier of the target UE carried in the SRVCC handover request message.
  • Switching from the LTE network to the CS network prevents the voice service of the UE from being affected by the network side abnormality, thereby improving the reliability of the voice service of the UE.
  • the first application scenario is: the MME determines that the target UE cannot switch between the eNodeBs and triggers the SRVCC handover. Further, before performing S301, the eNodeB sends a handover request message to the MME.
  • the handover request message sent by the eNodeB is used to notify the MME that the target UE needs to be handed over from the current eNodeB to the target eNodeB.
  • the current eNodeB is an eNodeB currently accessed by the target UE, that is, an eNodeB that sends a handover request message to the MME.
  • the eNodeB needs to determine that it cannot continue to provide voice services for the target UE.
  • the eNodeB just receives the wireless measurement report of the CS network sent by the target UE, and at this time, S302 Specifically, the eNodeB can switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the eNodeB determines itself After the radio measurement report of the CS network of the target UE is not available, the eNodeB needs to send a notification message to the target UE in order to ensure the reliability of the voice service of the target UE in the CS network, so that the target UE reports the wireless measurement report of the CS network.
  • the S302 may specifically: the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the radio measurement report of the CS network.
  • the notification message is used to notify the target UE to report the wireless measurement report of the CS network.
  • the second application scenario is: SRVCC handover triggered by the MME receiving the connection abnormality message, and further, in order to ensure the reliability of the voice service of the target UE in the CS network, the execution is performed.
  • the eNodeB receives the radio measurement report of the CS network sent by the target UE.
  • the S302 may be: the eNodeB performs the voice service of the target UE according to the radio measurement report of the CS network. Switch from the LTE network to the CS network.
  • the eNodeB after the eNodeB determines that there is no radio measurement report of the CS network of the target UE, the eNodeB needs to send the target UE to ensure the reliability of the voice service of the target UE in the CS network.
  • the notification message is sent to the target UE to report the wireless measurement report of the CS network.
  • the S302 may specifically: the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the radio measurement report of the CS network.
  • the notification message is used to notify the target UE to report the wireless measurement report of the CS network.
  • Another embodiment of the present invention provides a method for switching a voice service. As shown in FIG. 5, the method may include:
  • the eNodeB detects whether an abnormality occurs in the user plane connection between the self and the SGW.
  • the eNodeB When detecting that an abnormality occurs in the user plane connection between the self and the SGW, the eNodeB acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through a user plane connection between the eNodeB and the SGW.
  • the eNodeB determines, according to the EPS bearer identifier of the UE, the UE that has established the voice bearer as the target UE.
  • the eNodeB determines the UE that has established the voice bearer and supports the SRVCC handover as the target UE according to the EPS bearer identifier of the UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the method for switching the voice service provided by the embodiment of the present invention, after detecting that the user plane connection between the self and the SGW is abnormal, the eNodeB first satisfies the EPS bearer identifier of the UE with the predetermined condition, and then establishes according to the EPS bearer identifier of the UE.
  • the UE with voice bearer is determined as the target UE, and then the determined voice service of the target UE is switched from the LTE network to the CS network.
  • the voice service of the UE can be switched from the LTE network to the CS network, so that the voice service of the UE is affected by the abnormal connection of the user plane, thereby improving the voice of the UE.
  • Business reliability After the eNodeB detects that the user plane connection with the SGW is abnormal, the voice service of the UE can be switched from the LTE network to the CS network, so that the voice service of the UE is affected by the abnormal connection of the user plane, thereby improving the voice of the UE. Business reliability.
  • the eNodeB just receives the wireless measurement report of the CS network sent by the target UE, and at this time, S404 Specifically, the eNodeB can switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the eNodeB after the eNodeB determines that there is no radio measurement report of the CS network of the target UE, the eNodeB needs to send the target UE to ensure the reliability of the voice service of the target UE in the CS network.
  • the notification message is sent to the target UE to report the wireless measurement report of the CS network.
  • the S404 may specifically: the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the radio measurement report of the CS network.
  • the notification message is used to notify the target UE to report the wireless measurement report of the CS network.
  • Another embodiment of the present invention provides a method for switching a voice service.
  • the specific implementation process of the present invention is described in detail according to different application scenarios, as follows:
  • the first network device is the SGW
  • the second network device is the PGW.
  • the method for switching the voice service in the application scenario is as shown in FIG. 6.
  • the specific method may include:
  • S501 The SGW detects that the user plane connection between itself and the PGW is abnormal.
  • the user plane connection is abnormal, and the user plane connection is interrupted or the user plane connection is congested.
  • the SGW detects that the user plane connection between the user and the PGW is interrupted, and the process may include: S501a-S501c:
  • S501a and SGW acquire the user plane IP address of the PGW.
  • the SGW can obtain the user plane IP address of the PGW in any of the following manners:
  • Method 1 The SGW directly reads the user plane IP address of the pre-stored PGW.
  • the user plane IP address of the PGW is pre-stored in the SGW, so that the SGW can directly read the user plane IP address of the pre-stored PGW, thereby acquiring the user plane IP address of the PGW.
  • Manner 2 The SGW receives the user plane IP address of the PGW sent by the PGW in advance.
  • the PGW may send its own user plane IP address to the SGW, so that the SGW obtains the user plane IP address of the PGW.
  • the SGW sends a probe packet to the PGW.
  • the SGW After obtaining the user plane IP address of the PGW, the SGW sends a probe packet to the PGW according to the obtained user plane IP address. For example, the SGW may send a probe packet to the PGW by using a bidirectional forwarding detection (BFD).
  • BFD bidirectional forwarding detection
  • the SGW If the SGW does not receive the response message sent by the PGW within the preset time period, the SGW detects that the user plane connection with the PGW is interrupted.
  • the SGW determines that the user plane connection with the PGW is congested.
  • Condition 1 The packet loss rate of the user plane connection is greater than the first preset threshold.
  • the first preset threshold is a preset threshold of using a user plane connection to determine a threshold for congestion of the user plane connection.
  • Condition 2 The delay of the user plane connection is greater than the second preset threshold.
  • the second preset threshold is a preset threshold that uses a user plane connection to determine a threshold for congestion of the user plane connection.
  • Condition 3 The jitter of the user plane connection is greater than the third preset threshold.
  • the third preset threshold is a preset threshold using user plane connection to determine a threshold for congestion of the user plane connection.
  • the SGW detects that the user plane connection with the PGW satisfies the condition 1 as an example, and describes a process in which the user plane connection between the SGW and the PGW is congested.
  • the process may specifically be: when the SGW detects the network connected to the PGW. After the transmission bandwidth utilization of the interface exceeds a certain threshold, the SGW sends a detection packet to the PGW according to a certain detection period, and collects the packet loss rate of the detected packet within a preset time period. A predetermined threshold, the SGW determines that congestion occurs on the user plane connection with the PGW.
  • first preset threshold, the second preset threshold, and the third preset threshold may be determined by using a Mean Opinion Score (MOS) test, and the embodiment of the present invention is
  • MOS Mean Opinion Score
  • the values that are specifically set by the first preset threshold, the second preset threshold, and the third preset threshold are not limited, and may be set according to the requirements of the actual application scenario.
  • the SGW acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that meets the preset condition is a UE that performs service transmission by using a user plane connection between the SGW and the PGW.
  • the process of the SGW acquiring the EPS bearer identifier of the UE that meets the predetermined condition is: the SGW stores the correspondence between the EPS bearer identifier of the UE and the user plane IP address of the PGW, so that when the SGW detects the relationship between the UE and the PGW, If the user plane connection is abnormal, the UE that belongs to the EPS bearer identifier corresponding to the user plane IP address of the PGW can be obtained according to the mapping between the EPS bearer identifier of the UE and the user plane IP address of the PGW.
  • the user plane between the SGW and the PGW is connected to the UE for performing service transmission.
  • the SGW sends a connection abnormality message to the MME.
  • the connection abnormality message is used to report that the user plane connection between the SGW and the PGW is abnormal, and the connection abnormality message includes at least one EPS bearer identifier of the UE that meets the predetermined condition.
  • the SGW After detecting the abnormality of the user plane connection with the PGW, the SGW first acquires the EPS bearer identifier of the UE that performs the service transmission by using the user plane connection between the SGW and the PGW, and then carries the acquired EPS bearer identifier of the UE in the
  • the connection exception message is sent to the MME.
  • the MME receives a connection abnormality message sent by the SGW.
  • the MME determines, according to the EPS bearer identifier of the UE that meets the predetermined condition, the UE that has established the voice bearer as the target UE. Alternatively, the MME establishes the voice bearer and supports the SRVCC switch according to the EPS bearer identifier of the UE that meets the predetermined condition. The UE is determined to be the target UE.
  • the MME may determine, as the target UE, the UE with the voice bearer established according to the EPS bearer identifier of the UE that meets the predetermined condition.
  • the eNodeB since the current part of the UE does not support the function of the SRVCC handover, the eNodeB can switch the voice service of the part of the UE from the LTE network to the CS network, and therefore, the MME can be based on the UE that meets the predetermined condition.
  • the EPS bearers the identity, and the UE that establishes the voice bearer and supports the SRVCC handover is determined as the target UE.
  • the MME may determine, according to the EPS bearer identifier of the UE that meets the predetermined condition that is included in the connection abnormality message, the UE that has established the EPS bearer with the QCI equal to 1 as the target UE, and determine the UE that has established the voice bearer as the target UE.
  • the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB.
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the eNodeB performs the target UE according to the SRVCC handover procedure of the 3GPP standard.
  • the voice service is switched from the LTE network to the CS network.
  • the eNodeB just receives the wireless measurement report of the CS network sent by the target UE, and at this time, the S508 may specifically The eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the eNodeB needs to send a notification message to the target UE in order to ensure the reliability of the voice service of the target UE in the CS network. In order for the target UE to report the wireless measurement report of the CS network.
  • the S508 may specifically: the eNodeB switches the voice service of the target UE from the LTE network to the CS network according to the radio measurement report of the CS network; when the eNodeB determines that it has The eNodeB does not need to send a notification message to the target UE when the radio measurement report of the CS network of the target UE is needed.
  • the S508 may specifically be: the eNodeB switches the voice service of the target UE from the LTE network to the CS according to the wireless measurement report of the CS network.
  • the internet The internet.
  • the method for switching the voice service provided by the embodiment of the present invention, after the SGW detects that the user plane connection with the PGW is abnormal, the SGW sends a connection abnormality message to the MME, so that the MME instructs the eNodeB to target after receiving the connection abnormality message.
  • the voice service of the UE is switched from the LTE network to the CS network, which prevents the voice service of the UE from being affected by the abnormal connection of the user plane, thereby improving the reliability of the voice service of the UE.
  • the first network is configured as an eNodeB
  • the second network device is an SGW.
  • the method for switching the language service in the application scenario is as shown in FIG. 7.
  • the specific method may include:
  • the eNodeB detects that the user plane connection between itself and the SGW is abnormal.
  • the user plane connection is abnormal, and the user plane connection is interrupted or the user plane connection is congested.
  • the eNodeB acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that meets the preset condition is a user that passes between the eNodeB and the SGW.
  • the eNodeB sends a connection abnormality message to the MME.
  • connection exception message is used to report that the user plane connection between the eNodeB and the SGW is abnormal, and the connection exception message includes at least one EPS bearer identifier of the UE that meets the predetermined condition.
  • the MME receives a connection abnormality message sent by the eNodeB.
  • the MME determines, according to the EPS bearer identifier of the UE that meets the predetermined condition, the UE that has established the voice bearer as the target UE. Alternatively, the MME establishes the voice bearer and supports the SRVCC switch according to the EPS bearer identifier of the UE that meets the predetermined condition. The UE is determined to be the target UE.
  • the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB.
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the eNodeB may send a connection exception message to the MME, so that after receiving the connection abnormality message, the MME instructs the eNodeB to The voice service of the target UE is switched from the LTE network to the CS network, which prevents the voice service of the UE from being affected by the network side abnormality, thereby improving the reliability of the voice service of the UE.
  • the first network device is an eNodeB
  • the second network device is an SGW.
  • the method for switching the voice service in the application scenario is as shown in FIG. 8.
  • the specific method may include:
  • the eNodeB detects that the user plane connection between itself and the SGW is abnormal.
  • the user plane connection is abnormal, and the user plane connection is interrupted or the user plane connection is congested.
  • the eNodeB acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that meets the preset condition is a UE that performs service transmission by using a user plane connection between the eNodeB and the SGW.
  • the eNodeB determines, according to the EPS bearer identifier of the UE, the UE that has established the voice bearer as the target UE.
  • the eNodeB determines the UE that has established the voice bearer and supports the SRVCC handover as the target UE according to the EPS bearer identifier of the UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the method for switching the voice service provided by the embodiment of the present invention, after the eNodeB detects that the user plane connection with the SGW is abnormal, the eNodeB first acquires the EPS bearer identifier of the UE that meets the predetermined condition, and then obtains the EPS bearer of the UE according to the obtained UE.
  • the identifier identifies the UE with the voice bearer as the target UE, and finally switches the voice service of the target UE from the LTE network to the CS network.
  • the voice service of the target UE can be switched from the LTE network to the CS network, thereby preventing the voice service of the UE from being affected by the abnormal connection of the user plane, thereby improving the UE.
  • the reliability of the voice business Since the eNodeB can detect the abnormality of the user plane connection with the SGW, the voice service of the target UE can be switched from the LTE network to the CS network, thereby preventing the voice service of the UE from being affected by the abnormal connection of the user plane, thereby improving the UE. The reliability of the voice business.
  • the first network device is a PGW, and the first network device needs to be restarted as an example.
  • the method for switching the voice service in the application scenario is as shown in FIG. 9.
  • the specific method may include :
  • the PGW acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the PGW.
  • the PGW sends a connection abnormality message to the SGW.
  • the connection exception message includes an EPS bearer identifier of the UE that meets the predetermined condition.
  • the PGW After detecting that the device needs to be restarted, the PGW first obtains the EPS bearer identifier of the UE that performs the service transmission by using the user plane of the UE, and then carries the acquired EPS bearer identifier of the UE in the connection abnormality message and sends the message to the SGW.
  • the SGW sends a connection abnormality message to the MME.
  • the MME determines, according to the EPS bearer identifier of the UE that meets the predetermined condition, the UE that has established the voice bearer as the target UE. Alternatively, the MME establishes the voice bearer and supports the SRVCC switch according to the EPS bearer identifier of the UE that meets the predetermined condition. The UE is determined to be the target UE.
  • the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB.
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the voice service switching method provided by the embodiment of the present invention, after detecting that it needs to be restarted, the PGW sends a connection abnormality message to the MME through the SGW, so that after receiving the connection abnormality message, the MME instructs the eNodeB to use the voice service of the target UE from the LTE.
  • the network is switched to the CS network, which prevents the voice service of the UE from being affected by the PGW restart, thereby improving the reliability of the voice service of the UE.
  • the first network device is the SGW, and the first network device needs to be restarted as an example.
  • the method for switching the voice service in the application scenario is as shown in FIG. 10, and the specific method may include :
  • S901 The SGW detects that it needs to restart.
  • the SGW acquires an EPS bearer identifier of the UE that meets the predetermined condition.
  • the UE that meets the predetermined condition performs service transmission through the user plane of the SGW. UE.
  • the SGW sends a connection abnormality message to the MME.
  • the connection exception message includes an EPS bearer identifier of the UE that meets the predetermined condition.
  • the SGW After detecting that the device needs to be restarted, the SGW first acquires the EPS bearer identifier of the UE that performs the service transmission by using the user plane of the user, and then carries the acquired EPS bearer identifier of the UE in the connection abnormality message and sends the message to the MME.
  • the MME receives a connection abnormality message sent by the SGW.
  • the MME determines, according to the EPS bearer identifier of the UE that meets the predetermined condition, the UE that has established the voice bearer as the target UE. Alternatively, the MME establishes the voice bearer and supports the SRVCC switch according to the EPS bearer identifier of the UE that meets the predetermined condition. The UE is determined to be the target UE.
  • the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB.
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the method for switching the voice service provided by the embodiment of the present invention, after detecting that it needs to be restarted, the SGW sends a connection abnormality message to the MME, so that after receiving the connection abnormality message, the MME instructs the eNodeB to switch the voice service of the target UE from the LTE network.
  • the voice service of the UE is prevented from being restarted by the SGW, thereby improving the reliability of the voice service of the UE.
  • the method in which the UE needs to be switched between the eNodeBs is used as an example.
  • the method for switching the voice service in the application scenario is as shown in FIG. 11.
  • the specific method may include:
  • S1001 The eNodeB sends a handover request message to the MME.
  • the handover request message is used to notify the MME that the target UE needs to switch from the current eNodeB (the current eNodeB is the eNodeB currently accessed by the target UE, that is, the eNodeB that sends the handover request message to the MME) to the target eNodeB.
  • the MME receives a handover request message sent by the eNodeB.
  • the MME determines that the target UE cannot be handed over from the current eNodeB to the target eNodeB.
  • the MME cannot notify the target eNodeB to perform the handover. Therefore, the user plane voice bearer cannot be established between the target eNodeB and the SGW, that is, the MME determines that the target UE cannot be switched from the current eNodeB. Target eNodeB.
  • the MME sends an identifier SRVCC handover request message carrying the target UE to the eNodeB.
  • the eNodeB receives an SRVCC handover request message that is sent by the MME and carries an identifier of the target UE.
  • S1006 The eNodeB determines that it cannot continue to provide voice services for the target UE.
  • the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the method for the switching of the voice service provided by the embodiment of the present invention, after determining that the target UE cannot be handed over from the current eNodeB to the target eNodeB, the MME can send an SRVCC handover request message to the current eNodeB to indicate that the current eNodeB uses the voice service of the target UE from the LTE.
  • the network switches to the CS network. In this way, the voice service of the UE is prevented from being affected by the abnormality of the network side, thereby improving the reliability of the voice service of the UE.
  • the MME includes: a first determining unit 111 and a first sending unit 112.
  • the first determining unit 111 is configured to determine that there is an abnormality on the network side of the LTE network; and the network side of the LTE network establishes a voice bearer of the target UE.
  • the first sending unit 112 is configured to send an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the first sending unit 112 sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB carries the message according to the received SRVCC handover request message.
  • the identity of the target UE is switched from the LTE network to the CS network according to the SRVCC handover procedure of the 3GPP standard.
  • the first determining unit 111 includes: a first receiving module 1111 and a first determining module 1112.
  • the first receiving module 1111 is configured to receive a handover request message sent by the eNodeB, where the handover request message is used to notify the MME that the target UE needs to be handed over from the eNodeB to the target eNodeB.
  • the first determining module 1112 is configured to determine that the target UE cannot be handed over from the current eNodeB to the target eNodeB.
  • the current eNodeB is an eNodeB currently accessed by the target UE, that is, an eNodeB that sends a handover request message to the MME.
  • the first determining unit 111 includes: a second receiving module 1113 .
  • the MME may further include: a second determining unit 113.
  • the second receiving module 1113 is configured to receive a connection abnormality message sent by the first network device, and the connection abnormality message is used to feedback that the user plane connection is abnormal.
  • the connection abnormality message includes: an EPS bearer identifier of the at least one UE that meets the predetermined condition.
  • the second determining unit 113 is configured to: before the first sending unit 112 sends the SRVCC handover request message carrying the identifier of the target UE to the eNodeB, according to the EPS bearer identifier of the UE that meets the predetermined condition, the network side of the LTE network is established.
  • the voice bearer UE is determined to be the target UE, or the voice bearer is established in the network side of the LTE network according to the EPS bearer identifier of the UE that satisfies the predetermined condition, and the SRVCC cut is supported.
  • the changed UE is determined to be the target UE.
  • the second receiving module 1113 is configured to receive a connection abnormality message sent by the first network device after detecting that the user plane connection between the first network device and the second network device is abnormal.
  • the connection abnormality message includes an EPS bearer of the UE that meets the predetermined condition, and the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the second receiving module 1113 is specifically configured to receive a connection abnormality message sent by the first network device after determining that it needs to be restarted.
  • connection abnormality message includes an EPS bearer identifier of the UE that meets the predetermined condition, where
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is a preset threshold for determining the congestion of the user plane connection by using a packet loss rate of the user plane connection
  • the second preset threshold is a preset delay of using the user plane connection to determine the user plane.
  • the critical value of the connection congestion occurs
  • the third preset threshold is a preset threshold using the user plane connection to determine the threshold for congestion of the user plane connection.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • the MME provided by the embodiment of the present invention is different in determining the network side of the LTE network. Afterwards, the MME sends an SRVCC handover request message carrying the identity of the target UE to the eNodeB, so that the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the MME can instruct the eNodeB to switch the voice service of the target UE from the LTE network to the CS network after the network side of the LTE network is determined to be abnormal, so that the voice service of the UE is affected by the network side abnormality, thereby improving the voice service of the UE. Reliability.
  • the first network device includes: a first detecting unit 121, a first obtaining unit 122, and a second sending unit 123.
  • the first detecting unit 121 is configured to detect that there is an abnormality on the network side of the Long Term Evolution (LTE) network.
  • LTE Long Term Evolution
  • the first obtaining unit 122 is configured to acquire an EPS bearer identifier of at least one UE that meets a predetermined condition.
  • the second sending unit 123 is configured to send a connection abnormality message to the MME.
  • connection abnormality message is used to feed back an abnormality of the user plane connection, and the connection abnormality message includes: an EPS bearer identifier of the UE that satisfies the predetermined condition.
  • the first detecting unit 121 is specifically configured to detect that an abnormality occurs in a user plane connection between the first network device and the second network device.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by a user plane connection between the first network device and the second network device.
  • the first detecting unit 121 is specifically configured to detect that it needs to restart.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is a preset threshold for determining the congestion of the user plane connection by using a packet loss rate of the user plane connection
  • the second preset threshold is a preset delay of using the user plane connection to determine the user plane.
  • the critical value of the connection congestion occurs
  • the third preset threshold is a preset threshold using the user plane connection to determine the threshold for congestion of the user plane connection.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • the first network device after detecting that the user plane connection is abnormal, acquires the EPS bearer identifier of the UE that meets the predetermined condition, and obtains the acquired EPS bearer identifier of the UE that meets the predetermined condition.
  • the bearer is sent to the MME in the connection abnormality message, so that the MME determines the target UE according to the EPS bearer identifier of the UE, and instructs the eNodeB to switch the voice service of the target UE from the LTE network to the CS network, thereby preventing the voice service of the UE from being abnormal on the network side. The impact, thereby improving the reliability of the voice service of the UE.
  • the eNodeB includes: a first receiving unit 131 and a first switching unit 132.
  • the first receiving unit 131 is configured to receive an SRVCC handover request message that is sent by the MME and that carries an identifier of the target UE.
  • the first switching unit 132 is configured to switch the voice service of the target UE received by the first receiving unit 131 from the LTE network to the CS network.
  • the eNodeB further includes: a third sending unit 133.
  • the third sending unit 133 is configured to: before the first receiving unit 131 receives the SRVCC handover request message that carries the identifier of the target UE that is sent by the MME, send a handover request message to the MME; the handover request message is used to notify the MME that the target UE needs to be from the current eNodeB. Switch to the target eNodeB.
  • the current eNodeB is an eNodeB currently accessed by the target UE, that is, an eNodeB that sends a handover request message to the MME.
  • the eNodeB further includes: a third determining unit 134.
  • the third determining unit 134 is configured to determine that the first handover unit 132 cannot continue to provide voice services for the target UE before the voice service of the target UE is switched from the LTE network to the CS network.
  • the eNodeB further includes: a second receiving unit 135, configured to receive the CS sent by the target UE before the first switching unit 132 switches the voice service of the target UE from the LTE network to the CS network. Wireless measurement report for the network.
  • the first switching unit 132 is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network received by the second receiving unit 135.
  • the eNodeB further includes: a fourth sending unit 136, configured to send a notification message to the target UE before the second receiving unit 135 receives the wireless measurement report of the CS network sent by the target UE; The message is used to notify the target UE to report the wireless measurement report of the CS network.
  • the eNodeB After receiving the SRVCC handover request message that is sent by the MME and carrying the identifier of the target UE, the eNodeB switches the voice service of the target UE from the LTE network according to the identifier of the target UE carried in the SRVCC handover request message. To the CS network, the voice service of the UE is prevented from being affected by the abnormality of the network side, thereby improving the reliability of the voice service of the UE.
  • the eNodeB includes: a second detecting unit 141, a second obtaining unit 142, a fourth determining unit 143, and a second switching unit 144.
  • the second detecting unit 141 is configured to detect whether an abnormality occurs in the user plane connection between the eNodeB and the SGW.
  • a second obtaining unit 142 configured to: when the second detecting unit 141 detects the eNodeB When an abnormality occurs in the user plane connection between the SGWs, the EPS bearer identifier of the UE that satisfies the predetermined condition is acquired; the UE that satisfies the predetermined condition is the UE that performs the service transmission by using the user plane connection between the eNodeB and the SGW.
  • the fourth determining unit 143 is configured to determine, according to the EPS bearer identifier of the UE that is acquired by the second acquiring unit 142, the UE that has established the voice bearer as the target UE, or the EPS bearer of the UE that is acquired according to the second acquiring unit 142.
  • the identifier is determined by the UE that establishes the voice bearer and supports the SRVCC handover as the target UE.
  • the second switching unit 144 is configured to switch the voice service of the target UE determined by the fourth determining unit 143 from the LTE network to the CS network.
  • the eNodeB further includes: a third receiving unit 145.
  • the third receiving unit 145 is configured to receive the wireless measurement report of the CS network sent by the target UE before the second switching unit 144 switches the voice service of the target UE from the LTE network to the CS network.
  • the second switching unit 144 is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network received by the third receiving unit 145.
  • the eNodeB further includes: a fifth sending unit 146.
  • the fifth sending unit 146 is configured to send a notification message to the target UE before the third receiving unit 145 receives the wireless measurement report sent by the target UE, where the notification message is used to notify the target UE to report the wireless measurement report of the CS network.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is a preset threshold of using a user plane connection to determine a congestion value of the user plane connection congestion
  • the second preset threshold is a preset user plane.
  • the delay of the connection is used to determine the threshold for congestion of the user plane connection.
  • the third preset threshold is a preset threshold of user plane connection to determine the threshold for congestion of the user plane connection.
  • the eNodeB After detecting the abnormality of the user plane connection with the SGW, the eNodeB first obtains the EPS bearer identifier of the UE that meets the predetermined condition, and then establishes the voice bearer according to the EPS bearer identifier of the UE. The UE determines the target UE, and then switches the determined voice service of the target UE from the LTE network to the CS network. After the eNodeB detects that the user plane connection with the SGW is abnormal, the voice service of the UE can be switched from the LTE network to the CS network, so that the voice service of the UE is affected by the abnormal connection of the user plane, thereby improving the voice of the UE. Business reliability.
  • the MME includes: a processor 151 and a transmitter 152.
  • the processor 151 is configured to determine that there is an abnormality on the network side of the LTE network; and the network side of the LTE network establishes a voice bearer of the target UE.
  • the transmitter 152 is configured to send an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB switches the voice service of the target UE from the LTE network to the CS network.
  • the transmitter 152 sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB can identify the identifier of the target UE carried in the received SRVCC handover request message.
  • the voice service of the target UE is switched from the LTE network to the CS network according to the SRVCC handover procedure of the 3GPP standard.
  • the MME further includes: a receiver 153.
  • the receiver 153 is configured to receive a handover request message sent by the eNodeB, where the handover request message is used to notify the MME that the target UE needs to be handed over from the current eNodeB to the target eNodeB.
  • the current eNodeB is an eNodeB currently accessed by the target UE, that is, an eNodeB that sends a handover request message to the MME.
  • the processor 151 is specifically configured to determine that the target UE cannot be switched from the eNodeB to the target. eNodeB.
  • the receiver 153 is further configured to receive a connection abnormality message sent by the first network device, and the connection abnormality message is used to feedback that the user plane connection is abnormal; the connection abnormality message includes: at least one meets a predetermined condition.
  • the processor 151 is further configured to: before the transmitter 152 sends the SRVCC handover request message carrying the identifier of the target UE to the eNodeB, according to the EPS bearer identifier of the UE that meets the predetermined condition, the voice bearer is established in the network side of the LTE network.
  • the UE determines the target UE, or determines the UE that has the voice bearer and supports the SRVCC handover in the network side of the LTE network as the target UE according to the EPS bearer identifier of the UE that satisfies the predetermined condition.
  • the receiver 153 is specifically configured to receive a connection abnormality message that is sent by the first network device after detecting that the user plane connection between the user and the second network device is abnormal.
  • the connection abnormality message includes an EPS bearer of the UE that meets the predetermined condition, and the UE that satisfies the predetermined condition is a UE that performs service transmission by using a user plane connection between the first network device and the second network device.
  • the receiver 153 is specifically configured to receive a connection abnormality message sent by the first network device after determining that it needs to be restarted.
  • connection abnormality message includes an EPS bearer identifier of the UE that meets the predetermined condition, where
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is determined by using a packet loss rate of the user plane connection.
  • the threshold value of the user plane connection is congested.
  • the second preset threshold is a preset threshold of the user plane connection to determine the congestion value of the user plane connection congestion.
  • the third preset threshold is a preset user plane connection. Jitter to determine the threshold for congestion on the user plane connection.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • the MME After the MME provided by the embodiment of the present invention determines that there is an abnormality on the network side of the LTE network, the MME sends an SRVCC handover request message carrying the identifier of the target UE to the eNodeB, so that the eNodeB can switch the voice service of the target UE from the LTE network to the CS network.
  • the MME can instruct the eNodeB to switch the voice service of the target UE from the LTE network to the CS network after the network side of the LTE network is determined to be abnormal, so that the voice service of the UE is affected by the network side abnormality, thereby improving the voice service of the UE. Reliability.
  • the first network device includes a processor 161 and a transmitter 162.
  • the processor 161 is configured to detect that there is an abnormality on the network side of the LTE network.
  • the processor 161 is further configured to acquire an EPS bearer identifier of at least one UE that meets a predetermined condition.
  • the sender 162 is configured to send a connection abnormality message to the MME.
  • connection abnormality message is used to feed back an abnormality of the user plane connection, and the connection abnormality message includes: an EPS bearer identifier of the UE that satisfies the predetermined condition.
  • the processor 161 is specifically configured to detect that an abnormality occurs in a user plane connection between the first network device and the second network device.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission by a user plane connection between the first network device and the second network device.
  • the processor 161 is specifically configured to detect It needs to be restarted.
  • the UE that satisfies the predetermined condition is a UE that performs service transmission through the user plane of the first network device.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is a preset threshold for determining the congestion of the user plane connection by using a packet loss rate of the user plane connection
  • the second preset threshold is a preset delay of using the user plane connection to determine the user plane.
  • the critical value of the connection congestion occurs
  • the third preset threshold is a preset threshold using the user plane connection to determine the threshold for congestion of the user plane connection.
  • the first network device may be an SGW, an eNodeB, or a PGW.
  • the second network device is a PGW;
  • the eNodeB is set, the second network device is the SGW.
  • the embodiment of the present invention does not limit the specific network element of the first network device and the second network device, and may perform corresponding selection according to different actual application scenarios.
  • the first network device after detecting that the user plane connection is abnormal, acquires the EPS bearer identifier of the UE that meets the predetermined condition, and obtains the acquired EPS bearer identifier of the UE that meets the predetermined condition.
  • the bearer is sent to the MME in the connection abnormality message, so that the MME determines the target UE according to the EPS bearer identifier of the UE, and instructs the eNodeB to switch the voice service of the target UE from the LTE network to the CS network, thereby preventing the voice service of the UE from being abnormal on the network side. The impact, thereby improving the reliability of the voice service of the UE.
  • the eNodeB includes a receiver 171 and a processor 172.
  • the receiver 171 is configured to receive an SRVCC handover request message that is sent by the MME and that carries an identifier of the target UE.
  • the processor 172 is configured to switch the voice service of the target UE from the LTE network to the CS network.
  • the eNodeB further includes: a transmitter 173.
  • the transmitter 173 is configured to send a handover request message to the MME before the receiver 171 receives the SRVCC handover request message that carries the identifier of the target UE that is sent by the MME.
  • the handover request message is used to notify the MME that the target UE needs to switch from the current eNodeB to the target eNodeB. .
  • the current eNodeB is an eNodeB currently accessed by the target UE, that is, an eNodeB that sends a handover request message to the MME.
  • the processor 172 is further configured to determine that the voice service of the target UE cannot continue to provide the voice service to the target UE before the voice service of the target UE is switched from the LTE network to the CS network.
  • the receiver 171 is further configured to: before the processor 172 switches the voice service of the target UE from the LTE network to the CS network, receive the wireless measurement report of the CS network sent by the target UE.
  • the processor 172 is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network.
  • the transmitter 173 is further configured to: before the receiver 171 receives the wireless measurement report of the CS network sent by the target UE, send a notification message to the target UE; the notification message is used to notify the target UE to report the CS. Wireless measurement report for the network.
  • the eNodeB After receiving the SRVCC handover request message that is sent by the MME and carrying the identifier of the target UE, the eNodeB switches the voice service of the target UE from the LTE network according to the identifier of the target UE carried in the SRVCC handover request message. To the CS network, the voice service of the UE is prevented from being affected by the abnormality of the network side, thereby improving the reliability of the voice service of the UE.
  • the eNodeB includes: a processor 181.
  • the processor 181 is configured to detect whether a user plane connection between the eNodeB and the SGW is Abnormal.
  • the processor 181 is further configured to: when detecting that an abnormality occurs in the user plane connection between the eNodeB and the SGW, acquire an EPS bearer identifier of the UE that meets the predetermined condition; and the UE that meets the predetermined condition is a user plane connection between the eNodeB and the SGW. UE that performs service transmission.
  • the processor 181 is further configured to determine, according to the obtained EPS bearer identifier of the UE, the UE that has established the voice bearer as the target UE, or according to the acquired EPS bearer identifier of the UE, the voice bearer is established and the SRVCC switch is supported.
  • the UE is determined to be the target UE.
  • the processor 181 is further configured to switch the determined voice service of the target UE from the LTE network to the CS network.
  • the eNodeB further includes: a receiver 182.
  • the receiver 182 is configured to receive a wireless measurement report of the CS network sent by the target UE before the processor 181 switches the voice service of the target UE from the LTE network to the CS network.
  • the processor 181 is specifically configured to switch the voice service of the target UE from the LTE network to the CS network according to the wireless measurement report of the CS network received by the receiver.
  • the eNodeB further includes: a transmitter 183.
  • the transmitter 183 is configured to send a notification message to the target UE before the receiver 182 receives the wireless measurement report sent by the target UE.
  • the notification message is used to notify the target UE to report the wireless measurement report of the CS network.
  • the abnormality of the user plane connection includes any one of the following: the user plane connection is interrupted, and the user plane connection is congested.
  • the congestion of the user plane connection meets at least one of the following conditions: the packet loss rate of the user plane connection is greater than the first preset threshold, the delay of the user plane connection is greater than the second preset threshold, and the user The jitter of the surface connection is greater than the third preset threshold.
  • the first preset threshold is a preset threshold for determining the congestion of the user plane connection by using a packet loss rate of the user plane connection
  • the second preset threshold is a preset delay of using the user plane connection to determine the user plane.
  • the threshold at which the connection is congested, and the third preset threshold is The preset jitter of the user plane connection is used to determine the threshold for congestion of the user plane connection.
  • the eNodeB After detecting the abnormality of the user plane connection between the eNodeB and the SGW, the eNodeB first acquires the EPS bearer identifier of the UE that meets the predetermined condition, and then establishes the voice bearer according to the EPS bearer identifier of the UE.
  • the UE is determined to be the target UE, and then the determined voice service of the target UE is switched from the LTE network to the CS network.
  • the voice service of the UE can be switched from the LTE network to the CS network, so that the voice service of the UE is affected by the abnormal connection of the user plane, thereby improving the voice of the UE.
  • Business reliability After detecting the abnormality of the user plane connection between the eNodeB and the SGW, the eNodeB first acquires the EPS bearer identifier of the UE that meets the predetermined condition, and then establishes the voice bearer according to the EPS bearer identifier of the UE.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . 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 exist physically 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 a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or a processor to perform all or part 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 (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like.
  • ROM Read-Only Memory
  • RAM Random Access Memory

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Abstract

本发明实施例公开了一种语音业务切换方法及设备，涉及通信领域，解决了LTE网络的网络侧出现异常导致UE的语音业务的可靠性降低的问题。具体方案为：MME确定LTE网络的网络侧存在异常；所述LTE网络的网络侧建立有目标UE的语音承载；所述MME向eNodeB发送携带所述目标UE的标识的SRVCC切换请求消息，以便所述eNodeB将所述目标UE的语音业务从所述LTE网络切换到CS网络。本发明用于语音业务切换的过程中。

Description

一种语音业务切换方法及设备
本申请要求于2014年12月24日提交中国专利局、申请号为201410817864.2、发明名称为“一种语音业务切换方法及设备”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
本发明涉及通信领域，尤其涉及一种语音业务切换方法及设备。
背景技术
在长期演进(英文：Long Term Evolution，简称LTE)网络中，用户设备(英文：User Equipment，简称：UE)之间可以通过基于LTE的语音(英文：Voice Over LTE，简称：VoLTE)进行通信。其中，VoLTE是一种基于LTE系统和互联网协议多媒体系统(英文：Internet Protocol Multimedia System，简称：IMS)网络的语音业务。
当UE正在通过VoLTE进行通信时，若LTE系统的网络侧(所述网络侧是指从演进型基站(英文：Evolved NodeB，简称：eNodeB)到分组数据网网关(英文：Packet Data Network Gateway，简称：PGW)之间的网络)出现异常，则会导致UE的语音业务的可靠性降低。例如，若服务网关(英文：Serving Gateway，简称：SGW)到PGW之间的网络出现中断，则会导致UE正在进行的语音业务中断，从而导致UE的语音业务的可靠性降低。
因此，如何提升UE的语音业务的可靠性是本领域人员亟待解决的问题。
发明内容
本发明提供一种语音业务切换方法及设备，解决了LTE网络的网络侧出现异常导致UE的语音业务的可靠性降低的问题。
为达到上述目的，本发明采用如下技术方案：
本发明的第一方面，提供一种语音业务切换的方法，包括：
移动性管理实体MME确定长期演进LTE网络的网络侧存在异 常；所述LTE网络的网络侧建立有目标用户设备UE的语音承载；
所述MME向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息，以便所述eNodeB将所述目标UE的语音业务从所述LTE网络切换到电路交换CS网络。
结合本发明的第一方面，在第一种可能的实现方式中，所述移动性管理实体MME确定长期演进LTE网络的网络侧存在异常，包括：
所述MME接收所述eNodeB发送的切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB；
所述MME确定所述目标UE无法从所述eNodeB切换到所述目标eNodeB。
结合本发明的第一方面，在第二种可能的实现方式中，所述移动性管理实体MME确定长期演进LTE网络的网络侧存在异常，包括：
所述MME接收第一网络设备发送的连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：至少一个满足预定条件的UE的演进分组系统EPS承载标识；
所述MME向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，还包括：
所述MME根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载的UE确定为所述目标UE；
或者，所述MME根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为所述目标UE。
结合本发明第一方面的第二种可能的实现方式，在第三种可能的实现方式中，所述连接异常消息是所述第一网络设备在检测到自 身与第二网络设备之间的用户面连接出现异常后发送的；
所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
结合本发明第一方面的第二种可能的实现方式，在第四种可能的实现方式中，所述连接异常消息是所述第一网络设备在确定自身需要重启后发送的；
所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
结合本发明第一方面的第三种可能的实现方式，在第五种可能的实现方式中，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第一方面的第五种可能的实现方式，在第六种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
本发明的第二方面，提供一种语音业务切换的方法，包括：
第一网络设备检测到长期演进LTE网络的网络侧存在异常；
所述第一网络设备获取至少一个满足预定条件的用户设备UE的演进分组系统EPS承载标识；
所述第一网络设备向移动性管理实体MME发送连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：所述至少一个满足预定条件的UE的EPS承载标识。
结合本发明的第二方面，在第一种可能的实现方式中，所述第一网络设备检测到LTE网络的网络侧存在异常，包括：
所述第一网络设备检测到自身与第二网络设备之间的用户面连接出现异常；
所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
结合本发明的第二方面，在第二种可能的实现方式中，所述第一网络设备检测到LTE网络的网络侧存在异常，包括：
所述第一网络设备检测到自身需要重启；
所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
结合本发明第二方面的第一种可能的实现方式，在第三种可能的实现方式中，
所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第二方面的第三种可能的实现方式，在第四种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
本发明的第三方面，提供一种语音业务切换的方法，包括：
演进型基站eNodeB接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息；
所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
结合本发明的第三方面，在第一种可能的实现方式中，在所述 演进型基站eNodeB接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，还包括：
所述eNodeB向所述MME发送切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB。
结合本发明第三方面的第一种可能的实现方式，在第二种可能的实现方式中，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
所述eNodeB确定自身无法继续为所述目标UE提供语音业务。
结合本发明的第三方面至第三方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告；
所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络，包括：
所述eNodeB根据所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
结合本发明第三方面的第三种可能的实现方式，在第四种可能的实现方式中，在所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告之前，还包括：
所述eNodeB向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
本发明的第四方面，提供一种语音业务切换方法，包括：
演进型基站eNodeB检测自身与服务网关SGW之间的用户面连接是否出现异常；
当检测到自身与所述SGW之间的用户面连接出现异常时，所 述eNodeB获取满足预定条件的UE的演进分组系统EPS承载标识；所述满足预定条件的UE为通过所述eNodeB与所述SGW之间的用户面连接进行业务传输的UE；
所述eNodeB根据所述UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，所述eNodeB根据所述UE的EPS承载标识，将建立有语音承载且支持单无线承载语音呼叫连续性SRVCC切换的UE确定为所述目标UE；
所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
结合本发明的第四方面，在第一种可能的实现方式中，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告；
所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络，包括：
所述eNodeB根据所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
结合本发明第四方面的第一种可能的实现方式，在第二种可能的实现方式中，在所述eNodeB接收所述目标UE发送的无线测量报告之前，还包括：
所述eNodeB向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
结合本发明的第四方面至第四方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第四方面的第三种可能的实现方式，在第四种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第 二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
本发明的第五方面，提供一种移动性管理实体MME，所述MME包括：第一确定单元和第一发送单元；
所述第一确定单元，用于确定长期演进LTE网络的网络侧存在异常；所述LTE网络的网络侧建立有目标用户设备UE的语音承载；
所述第一发送单元，用于向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息，以便所述eNodeB将所述目标UE的语音业务从所述LTE网络切换到电路交换CS网络。
结合本发明的第五方面，在第一种可能的实现方式中，所述第一确定单元包括：第一接收模块和第一确定模块；
所述第一接收模块，用于接收所述eNodeB发送的切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB；
所述第一确定模块，用于确定所述目标UE无法从所述eNodeB切换到所述目标eNodeB。
结合本发明的第五方面，在第二种可能的实现方式中，所述MME还包括：第二确定单元；所述第一确定单元包括：第二接收模块；
所述第二接收模块，用于接收第一网络设备发送的连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：至少一个满足预定条件的UE的演进分组系统EPS承载标识；
所述第二确定单元，用于在所述第一发送单元向演进型基站 eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载的UE确定为所述目标UE，或者，根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为所述目标UE。
结合本发明第五方面的第二种可能的实现方式，在第三种可能的实现方式中，
所述第二接收模块，具体用于接收所述第一网络设备在检测到自身与第二网络设备之间的用户面连接出现异常后发送的所述连接异常消息；
所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
结合本发明第五方面的第二种可能的实现方式，在第四种可能的实现方式中，
所述第二接收模块，具体用于接收所述第一网络设备在确定自身需要重启后发送的所述连接异常消息；
所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
结合本发明第五方面的第二种可能的实现方式，在第五种可能的实现方式中，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第五方面的第五种可能的实现方式，在第六种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设 阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
本发明的第六方面，提供一种第一网络设备，所述第一网络设备包括：第一检测单元、第一获取单元和第二发送单元；
所述第一检测单元，用于检测到长期演进LTE网络的网络侧存在异常；
所述第一获取单元，用于获取至少一个满足预定条件的用户设备UE的演进分组系统EPS承载标识；
所述第二发送单元，用于向移动性管理实体MME发送连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：所述至少一个满足预定条件的UE的EPS承载标识。
结合本发明的第六方面，在第一种可能的实现方式中，所述第一检测单元，具体用于检测到所述第一网络设备与第二网络设备之间的用户面连接出现异常；
所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
结合本发明的第六方面，在第二种可能的实现方式中，所述第一检测单元，具体用于检测到自身需要重启；
所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
结合本发明第六方面的第一种可能的实现方式，在第三种可能的实现方式中，
所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第六方面的第三种可能的实现方式，在第四种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设 阈值的最大值为当用户终端UE无法使用所述用户面连接时所述用户面连接的丢包率；所述第二预设阈值的最大值为当所述UE无法使用所述用户面连接时所述用户面连接的时延；所述第三预设阈值的最大值为当所述UE无法使用所述用户面连接时所述用户面连接的抖动。
本发明的第七方面，提供一种演进型基站eNodeB，所述eNodeB包括：第一接收单元和第一切换单元；
所述第一接收单元，用于接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息；
所述第一切换单元，用于将所述第一接收单元接收到的所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
结合本发明的第七方面，在第一种可能的实现方式中，所述eNodeB还包括：第三发送单元；
所述第三发送单元，用于在所述第一接收单元接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，向所述MME发送切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB。
结合本发明第七方面的第一种可能的实现方式，在第二种可能的实现方式中，所述eNodeB还包括：第三确定单元；
所述第三确定单元，用于在所述第一切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，确定自身无法继续为所述目标UE提供语音业务。
结合本发明的第七方面至第七方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述eNodeB还包括：第二接收单元；
所述第二接收单元，用于在所述第一切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，接 收所述目标UE发送的所述CS网络的无线测量报告；
所述第一切换单元，具体用于根据所述第二接收单元接收到的所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
结合本发明第七方面的第三种可能的实现方式，在第四种可能的实现方式中，所述eNodeB还包括：第四发送单元；
所述第四发送单元，用于在所述第二接收单元接收所述目标UE发送的所述CS网络的无线测量报告之前，向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
本发明的第八方面，提供一种演进型基站eNodeB，所述eNodeB包括：第二检测单元、第二获取单元、第四确定单元和第二切换单元；
所述第二检测单元，用于检测所述eNodeB与服务网关SGW之间的用户面连接是否出现异常；
所述第二获取单元，用于当所述第二检测单元检测到所述eNodeB与所述SGW之间的用户面连接出现异常时，获取满足预定条件的UE的演进分组系统EPS承载标识；所述满足预定条件的UE为通过所述eNodeB与所述SGW之间的用户面连接进行业务传输的UE；
所述第四确定单元，用于根据所述第二获取单元获取到的所述UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，或者，根据所述第二获取单元获取到的所述UE的EPS承载标识，将建立有语音承载且支持单无线承载语音呼叫连续性SRVCC切换的UE确定为所述目标UE；
所述第二切换单元，用于将所述第四确定单元确定出的所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
结合本发明的第八方面，在第一种可能的实现方式中，所述eNodeB还包括：第三接收单元；
所述第三接收单元，用于在所述第二切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，接收所述目标UE发送的所述CS网络的无线测量报告；
所述第二切换单元，具体用于根据所述第三接收单元接收到的所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
结合本发明第八方面的第一种可能的实现方式，在第二种可能的实现方式中，所述eNodeB还包括：第五发送单元；
所述第五发送单元，用于在所述第三接收单元接收所述目标UE发送的无线测量报告之前，向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
结合本发明的第八方面至第八方面的第二种可能的实现方式任一种，在第三种可能的实现方式中，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
结合本发明第八方面的第三种可能的实现方式，在第四种可能的实现方式中，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
本发明实施例提供的语音业务切换方法及设备，在确定LTE网络的网络侧存在异常之后，MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。由于MME在确定LTE网络的网络侧存在异常之后，能够指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提 升了UE的语音业务的可靠性。
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性的前提下，还可以根据这些附图获得其他的附图。
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性的前提下，还可以根据这些附图获得其他的附图。
图1为实施本发明实施例提供的语音业务切换方法的系统架构示意图；
图2为本发明一实施例提供的一种语音业务切换方法流程图；
图3为本发明另一实施例提供的一种语音业务切换方法流程图；
图4为本发明另一实施例提供的一种语音业务切换方法流程图；
图5为本发明另一实施例提供的一种语音业务切换方法流程图；
图6为本发明另一实施例提供的一种语音业务切换方法流程图；
图7为本发明另一实施例提供的另一种语音业务切换方法流程图；
图8为本发明另一实施例提供的另一种语音业务切换方法流程图；
图9为本发明另一实施例提供的另一种语音业务切换方法流程图；
图10为本发明另一实施例提供的另一种语音业务切换方法流程图；
图11为本发明另一实施例提供的另一种语音业务切换方法流程图；
图12为本发明另一实施例提供的一种MME的组成示意图；
图13为本发明另一实施例提供的另一种MME的组成示意图；
图14为本发明另一实施例提供的另一种MME的组成示意图；
图15为本发明另一实施例提供的一种第一网络设备的组成示意图；
图16为本发明另一实施例提供的一种eNodeB的组成示意图；
图17为本发明另一实施例提供的另一种eNodeB的组成示意图；
图18为本发明另一实施例提供的一种eNodeB的组成示意图；
图19为本发明另一实施例提供的另一种eNodeB的组成示意图；
图20为本发明另一实施例提供的一种MME的组成示意图；
图21为本发明另一实施例提供的一种第一网络设备的组成示意图；
图22为本发明另一实施例提供的一种eNodeB的组成示意图；
图23为本发明另一实施例提供的一种eNodeB的组成示意图。
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作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。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A， 同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
如图1所示，示出了本发明实施例提供的语音业务切换方法应用的系统架构图，该系统包括UE01、位于LTE网络的eNodeB02、SGW03、PGW04、移动性管理实体(英文：Mobility Management Entity，简称：MME)05、位于IMS网络的会话边界控制器(英文：Session Border Controller，简称：SBC)06、位于电路交换(英文：Circuit Switching，简称：CS)网络的第二代或第三代基站07以及位于CS网络的单无线承载语音呼叫连续性互操作功能(英文：Single Radio Voice Call Continuity-Interworking Function，简称：SRVCC-IWF)08。通常，UE01可以通过LTE网络以及IMS网络与其它UE进行语音通信，当如图1所示的LTE网络的网络侧用户面或控制面出现异常时，会影响UE01与其它UE之间的通信质量。采用本发明提供的语音业务切换方法，可以将UE01的语音业务从LTE网络切换到CS网络，以便UE01通过CS网络和IMS网络与其它UE进行语音通信，以保证UE01与其它UE之间的通信质量。
为了便于本领域技术人员的理解，本发明提供的技术方案具体的实施过程具体可以参考本发明提供的以下实施例。
本发明一实施例提供一种语音业务切换的方法，如图2所示，该方法可以包括：
S101、MME确定LTE网络的网络侧存在异常。
其中，LTE网络的网络侧建立有目标UE的语音承载。目标UE为语音承载受LTE网络的网络侧异常影响的UE。
S102、MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
其中，在确定LTE网络的网络侧存在异常之后，MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB根据接收到的SRVCC切换请求消息中携带的目标UE的标识，按照第 三代合作伙伴计划(英文：3rd Generation Partnership Project，简称：3GPP)标准的SRVCC切换流程，将目标UE的语音业务从LTE网络切换到CS网络。
本发明实施例提供的语音业务切换的方法，在确定LTE网络的网络侧存在异常之后，MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。由于MME在确定LTE网络的网络侧存在异常之后，能够指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
进一步的，在第一种可能的实现方式中，MME确定LTE网络的网络侧存在异常具体的可以为：MME接收eNodeB发送的切换请求消息，并确定目标UE无法从当前eNodeB切换到目标eNodeB。
其中，eNodeB发送的切换请求消息用于通知MME目标UE需从当前eNodeB切换到目标eNodeB，其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
进一步的，在第二种可能的实现方式中，MME确定LTE网络的网络侧存在异常具体的可以为：MME接收第一网络设备发送的连接异常消息。
其中，连接异常消息用于反馈用户面连接出现异常，且该连接异常消息包含至少一个满足预定条件的UE的演进分组系统(英文：Evolved Packet System，简称：EPS)承载标识。其中，满足预定条件的UE为用户面连接出现异常后业务传输受影响的UE。
为了保证满足预定条件的UE的语音业务的可靠性，在执行S102之前，MME需要从满足预定条件的UE中确定出目标UE，在一种可能的实现方式中，MME确定目标UE的过程为：MME需要根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载的UE确定为目标UE，在另一种可能的实现方式中，由于目前部分UE不支持SRVCC切换的功能，为了能够将该部 分UE的语音业务从LTE网络切换到CS网络，因此，MME确定目标UE的过程为：MME根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为目标UE。
其中，MME中存储有UE的EPS承载标识与UE的EPS承载之间的对应关系，该EPS承载可以为语音承载。在MME接收到第一网络设备发送的连接异常消息之后，MME可以根据连接异常消息中包含的满足预定条件的UE的EPS承载标识，在LTE网络的网络侧中找出服务质量等级标识(英文：Quality Of Service Class Identifier，简称：QCI)等于1的EPS承载的UE，即在LTE网络的网络侧中找出语音承载的UE，并将该部分UE确定为目标UE。
进一步的，在MME确定LTE网络的网络侧存在异常的第二种可能的实现方式中，在一种可能的实现方式中，MME接收到的连接异常消息是第一网络设备在检测到自身与第二网络设备之间的用户面连接出现异常后发送的。该连接异常消息中包括满足预定条件的UE的EPS承载标识，该满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
进一步的，在另一种可能的实现方式中，MME接收到的连接异常消息是第一网络设备在确定自身需要重启后发送的。该连接异常消息中包括满足预定条件的UE的EPS承载标识，该满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明另一实施例提供一种语音业务切换的方法，如图3所示，该方法可以包括：
S201、第一网络设备检测到LTE网络的网络侧存在异常。
S202、第一网络设备获取满足预定条件的UE的EPS承载标识。
S203、第一网络设备向MME发送连接异常消息。
其中，连接异常消息用于反馈用户面连接出现异常，且该连接异常消息包含至少一个满足预定条件的UE的EPS承载标识。在检测到用户面连接出现异常之后，第一网络设备获取满足预定条件的UE的EPS承载标识，并将获取到的满足预定条件的UE的EPS承载标识携带在连接异常消息中发送至MME。
本发明实施例提供的语音业务切换的方法，在检测到用户面连接出现异常之后，第一网络设备获取满足预定条件的UE的EPS承载标识，并将获取到的满足预定条件的UE的EPS承载标识携带在连接异常消息中发送至MME，以便MME根据UE的EPS承载标识确定目标UE，并指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
进一步的，在一种可能的实现方式中，第一网络设备检测到LTE网络的网络侧存在异常具体的可以为：第一网络设备检测到自身与第二网络设备之间的用户面连接出现异常。
在该实现方式下，S202中满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
进一步的，在另一种可能的实现方式中，第一网络设备检测到LTE网络的网络侧存在异常具体的可以为：第一网络设备检测到自身需要重启。
在该实现方式下，S202中满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明另一实施例提供一种语音业务切换的方法，如图4所示，该方法可以包括：
S301、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S302、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
其中，在接收到MME发送的携带目标UE的标识的SRVCC切换请求消息之后，eNodeB根据SRVCC切换请求消息中携带的目标UE的标识，按照3GPP标准的SRVCC切换流程，将目标UE的语音业务从LTE网络切换到CS网络。
本发明实施例提供的语音业务切换的方法，在接收到MME发送的携带目标UE的标识的SRVCC切换请求消息之后，eNodeB根据SRVCC切换请求消息中携带的目标UE的标识，将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
在第一种应用场景下(所述第一种应用场景为：因MME确定目标UE无法在eNodeB之间切换触发的SRVCC切换)，进一步的，在执行S301之前，eNodeB向MME发送切换请求消息。
其中，eNodeB发送的切换请求消息用于通知MME目标UE需从当前eNodeB切换到目标eNodeB。其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
进一步的，为了避免目标UE进行不必要的切换，在执行S302之前，eNodeB需要确定自身无法继续为目标UE提供语音业务。
进一步的，为了保证目标UE的语音业务在CS网络中的可靠性，在执行S302之前，在一种可能的实现方式中，eNodeB恰好接收目标UE发送的CS网络的无线测量报告，此时，S302具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
进一步的，在另一种可能的实现方式中，在eNodeB确定自身 没有目标UE的CS网络的无线测量报告之后，为了保证目标UE的语音业务在CS网络中的可靠性，eNodeB需向目标UE发送通知消息，以便目标UE上报CS网络的无线测量报告。在eNodeB接收到目标UE发送的CS网络的无线测量报告之后，S302具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
其中，通知消息用于通知目标UE上报CS网络的无线测量报告。
在第二种应用场景下(所述第二种应用场景为：因MME接收到连接异常消息触发的SRVCC切换)，进一步的，为了保证在CS网络中目标UE的语音业务的可靠性，在执行S302之前，在一种可能的实现方式中，eNodeB恰好接收目标UE发送的CS网络的无线测量报告，此时，S302具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
进一步的，在另一种可能的实现方式中，在eNodeB确定自身没有目标UE的CS网络的无线测量报告之后，为了保证目标UE的语音业务在CS网络中的可靠性，eNodeB需向目标UE发送通知消息，以便目标UE上报CS网络的无线测量报告。在eNodeB接收到目标UE发送的CS网络的无线测量报告之后，S302具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
其中，通知消息用于通知目标UE上报CS网络的无线测量报告。
本发明另一实施例提供一种语音业务切换的方法，如图5所示，该方法可以包括：
S401、eNodeB检测自身与SGW之间的用户面连接是否出现异常。
S402、当检测到自身与SGW之间的用户面连接出现异常时，eNodeB获取满足预定条件的UE的EPS承载标识。
其中，满足预定条件的UE为通过eNodeB与SGW之间的用户面连接进行业务传输的UE。
S403、eNodeB根据UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，eNodeB根据UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
S404、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
本发明实施例提供的语音业务切换的方法，在检测到自身与SGW之间的用户面连接出现异常之后，eNodeB首先满足预定条件的UE的EPS承载标识，然后根据UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，再将确定出的目标UE的语音业务从LTE网络切换到CS网络。由于eNodeB在检测到与SGW之间的用户面连接出现异常之后，能够将UE的语音业务从LTE网络切换到CS网络，避免UE的语音业务受到用户面连接异常的影响，从而提升了UE的语音业务的可靠性。
进一步的，为了保证目标UE的语音业务在CS网络中的可靠性，在执行S404之前，在一种可能的实现方式中，eNodeB恰好接收目标UE发送的CS网络的无线测量报告，此时，S404具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
进一步的，在另一种可能的实现方式中，在eNodeB确定自身没有目标UE的CS网络的无线测量报告之后，为了保证目标UE的语音业务在CS网络中的可靠性，eNodeB需向目标UE发送通知消息，以便目标UE上报CS网络的无线测量报告。在eNodeB接收到目标UE发送的CS网络的无线测量报告之后，S404具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
其中，通知消息用于通知目标UE上报CS网络的无线测量报告。
本发明另一实施例提供一种语音业务切换的方法，为了便于本领域技术人员的理解，在本发明实施例中，根据应用场景的不同，对本发明的具体实施过程进行详细描述，具体如下：
在第一种应用场景下，以第一网络设备为SGW，第二网络设备为PGW为例介绍，在该应用场景下的语音业务切换的方法如图6所示，具体的该方法可以包括：
S501、SGW检测到自身与PGW之间的用户面连接出现异常。
其中，用户面连接出现异常为用户面连接发生中断或者用户面连接发生拥塞。
当用户面连接出现异常为用户面连接发生中断时，在一种可能的实现方式中，SGW检测到自身与PGW之间的用户面连接发生中断的过程可以包括S501a-S501c：
S501a、SGW获取PGW的用户面IP地址。
其中，SGW可以通过以下方式中的任一种方式获取PGW的用户面IP地址：
方式一：SGW直接读取预先存储的PGW的用户面IP地址。
其中，SGW中预先存储有PGW的用户面IP地址，这样，SGW便可以直接读取预先存储的PGW的用户面IP地址，从而获取到PGW的用户面IP地址。
方式二：SGW预先接收PGW发送的PGW的用户面IP地址。
其中，在UE建立语音承载的过程中，PGW可以将自身的用户面IP地址发送给SGW，以便SGW获取到PGW的用户面IP地址。
S501b、SGW向PGW发送探测报文。
其中，在获取到PGW的用户面IP地址之后，SGW根据获取到的用户面IP地址，向PGW发送探测报文。示例性的，SGW可以采用双向转发探测(英文：Bidirectional Forwarding Detection，简称：BFD)方式向PGW发送探测报文。
S501c、若SGW在预设时间段内未接收到PGW发送的响应报文，则SGW检测到与PGW之间的用户面连接发生中断。
当用户面连接出现异常为用户面连接发生拥塞时，若SGW检测到与PGW之间的用户面连接满足以下至少一种条件，则SGW确定与PGW之间的用户面连接发生拥塞。
条件一：用户面连接的丢包率大于第一预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值。
条件二：用户面连接的时延大于第二预设阈值。
其中，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值。
条件三：用户面连接的抖动大于第三预设阈值。
其中，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
以SGW检测到与PGW之间的用户面连接满足条件1为例，介绍SGW检测与PGW之间的用户面连接发生拥塞的过程，该过程具体的可以为：当SGW检测到与PGW连接的网口的传输宽带利用率超过一定的门限值之后，SGW按照一定的探测周期向PGW发送探测报文，并统计在预设时间段内探测报文的丢包率，若该丢包率大于第一预设阈值，则SGW确定与PGW之间的用户面连接发生拥塞。
需要说明的是，第一预设阈值、第二预设阈值以及第三预设阈值可以通过平均意见值(英文：Mean Opinion Score，简称：MOS)测试确定得到，且本发明实施例在此并未对第一预设阈值、第二预设阈值以及第三预设阈值具体设置的值进行限制，可以根据实际应用场景的需求进行相应的设置。
S502、SGW获取满足预定条件的UE的EPS承载标识。
其中，满足预设条件的UE为通过SGW与PGW之间的用户面连接进行业务传输的UE。示例性的，SGW获取满足预定条件的UE的EPS承载标识的过程为：SGW中保存有UE的EPS承载标识与PGW的用户面IP地址的对应关系，这样，当SGW检测到自身与PGW之间的用户面连接出现异常时，可以根据自身保存的UE的EPS承载标识与PGW的用户面IP地址的对应关系，获取与PGW的用户面IP地址对应的EPS承载标识所属的UE，即获取到通过SGW与PGW之间的用户面连接进行业务传输的UE。
S503、SGW向MME发送连接异常消息。
其中，连接异常消息用于反馈SGW与PGW的用户面连接出现异常，该连接异常消息中包含至少一个满足预定条件的UE的EPS承载标识。在检测到与PGW之间的用户面连接出现异常之后，SGW首先获取通过SGW与PGW之间的用户面连接进行业务传输的UE的EPS承载标识，然后将获取到的UE的EPS承载标识携带在连接异常消息中发送至MME。
S504、MME接收SGW发送的连接异常消息。
S505、MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
其中，在接收到SGW发送的连接异常消息之后，在一种可能的实现方式中，MME可以根据满足预定条件的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE。在另一种可能的实现方式中，由于目前部分UE不支持SRVCC切换的功能，为了eNodeB能够将该部分UE的语音业务从LTE网络切换到CS网络，因此，MME可以根据满足预定条件的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
其中，MME可以根据连接异常消息中包含的满足预定条件的UE的EPS承载标识，将建立有QCI等于1的EPS承载的UE确定为目标UE，即将建立有语音承载的UE确定为目标UE。
S506、MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息。
S507、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S508、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
其中，eNodeB按照3GPP标准的SRVCC切换流程，将目标UE 的语音业务从LTE网络切换到CS网络。
为了保证目标UE的语音业务在CS网络中的可靠性，在执行S508之前，在一种可能的实现方式中，eNodeB恰好接收目标UE发送的CS网络的无线测量报告，此时，S508具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
在另一种可能的实现方式中，在eNodeB确定自身没有目标UE的CS网络的无线测量报告之后，为了保证目标UE的语音业务在CS网络中的可靠性，eNodeB需向目标UE发送通知消息，以便目标UE上报CS网络的无线测量报告。在eNodeB接收到目标UE发送的CS网络的无线测量报告之后，S508具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络；当eNodeB确定自身有目标UE的CS网络的无线测量报告时，eNodeB无需向目标UE发送通知消息，此时，S508具体的可以为：eNodeB根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
本发明实施例提供的语音业务切换的方法，在SGW检测到与PGW之间的用户面连接出现异常之后，SGW向MME发送连接异常消息，以便MME在接收到连接异常消息之后，指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到用户面连接异常的影响，从而提升了UE的语音业务的可靠性。
在第二种应用场景下，以第一网络设为eNodeB，第二网络设备为SGW为例介绍，在该应用场景下的语业务切换的方法如图7所示，具体的该方法可以包括：
S601、eNodeB检测到自身与SGW之间的用户面连接出现异常。
其中，用户面连接出现异常为用户面连接发生中断或者用户面连接发生拥塞。
S602、eNodeB获取满足预定条件的UE的EPS承载标识。
其中，满足预设条件的UE为通过eNodeB与SGW之间的用户 面连接进行业务传输的UE。
S603、eNodeB向MME发送连接异常消息。
其中，连接异常消息用于反馈eNodeB与SGW之间的用户面连接出现异常，且该连接异常消息中包含至少一个满足预定条件的UE的EPS承载标识。
S604、MME接收eNodeB发送的连接异常消息。
S605、MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
S606、MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息。
S607、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S608、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
需要说明的是，本发明实施例S601-S608中的相关内容的描述可以参考本发明实施例S501-S508中对应内容的描述，本处不再一一赘述。
本发明实施例提供的语音业务切换的方法，在eNodeB检测到与SGW之间的用户面连接出现异常之后，eNodeB可以向MME发送连接异常消息，以便MME在接收到连接异常消息之后，指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
在第三种应用场景下，以第一网络设备为eNodeB，第二网络设备为SGW为例介绍，在该应用场景下的语音业务切换的方法如图8所示，具体的该方法可以包括：
S701、eNodeB检测到自身与SGW之间的用户面连接出现异常。
其中，用户面连接出现异常为用户面连接发生中断或者用户面连接发生拥塞。
S702、eNodeB获取满足预定条件的UE的EPS承载标识。
其中，满足预设条件的UE为通过eNodeB与SGW之间的用户面连接进行业务传输的UE。
S703、eNodeB根据UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，eNodeB根据UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
S704、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
需要说明的是，本发明实施例S701-S704中的相关内容的描述可以参考本发明实施例S501-S508中对应内容的描述，本处不再一一赘述。
本发明实施例提供的语音业务切换的方法，在eNodeB检测到与SGW之间的用户面连接出现异常之后，eNodeB首先获取满足预定条件的UE的EPS承载标识，然后根据获取到的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，最后将目标UE的语音业务从LTE网络切换到CS网络。由于eNodeB在检测到与SGW之间的用户面连接出现异常之后，能够将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到用户面连接异常的影响，从而提升了UE的语音业务的可靠性。
在第四种应用场景下，以第一网络设备为PGW，且第一网络设备需要重启为例介绍，在该应用场景下的语音业务切换的方法如图9所示，具体的该方法可以包括：
S801、PGW检测到自身需要重启。
S802、PGW获取满足预定条件的UE的EPS承载标识。
其中，满足预定条件的UE为通过PGW的用户面进行业务传输的UE。
S803、PGW向SGW发送连接异常消息。
其中，连接异常消息包含满足预定条件的UE的EPS承载标识。在检测到自身需要重启之后，PGW首先获取通过自身的用户面进行业务传输的UE的EPS承载标识，然后将获取到的UE的EPS承载标识携带在连接异常消息中发送至SGW。
S804、SGW将连接异常消息发送至MME。
S805、MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
S806、MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息。
S807、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S808、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
需要说明的是，本发明实施例S801-S808中的相关内容的描述可以参考本发明实施例S501-S508中对应内容的描述，本处不再一一赘述。
本发明实施例提供的语音业务切换的方法，在检测到自身需要重启之后，PGW通过SGW向MME发送连接异常消息，以便MME在接收到连接异常消息之后，指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到PGW重启的影响，从而提升了UE的语音业务的可靠性。
在第五种应用场景下，以第一网络设备为SGW，且第一网络设备需要重启为例介绍，在该应用场景下的语音业务切换的方法如图10所示，具体的该方法可以包括：
S901、SGW检测到自身需要重启。
S902、SGW获取满足预定条件的UE的EPS承载标识。
其中，满足预定条件的UE为通过SGW的用户面进行业务传输 的UE。
S903、SGW向MME发送连接异常消息。
其中，连接异常消息包含满足预定条件的UE的EPS承载标识。在检测到自身需要重启之后，SGW首先获取通过自身的用户面进行业务传输的UE的EPS承载标识，然后将获取到的UE的EPS承载标识携带在连接异常消息中发送至MME。
S904、MME接收SGW发送的连接异常消息。
S905、MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，MME根据满足预定条件的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
S906、MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息。
S907、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S908、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
需要说明的是，本发明实施例S901-S908中的相关内容的描述可以参考本发明实施例S501-S508中对应内容的描述，本处不再一一赘述。
本发明实施例提供的语音业务切换的方法，在检测到自身需要重启之后，SGW向MME发送连接异常消息，以便MME在接收到连接异常消息之后，指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到SGW重启的影，从而提升了UE的语音业务的可靠性。
在第六种应用场景下，以UE需要在eNodeB之间切换为例介绍，在该应用场景下的语音业务切换的方法如图11所示，具体的该方法可以包括：
S1001、eNodeB向MME发送切换请求消息。
其中，切换请求消息用于通知MME目标UE需从当前eNodeB(所述当前eNodeB为目标UE当前接入的eNodeB，即向MME发送切换请求消息的eNodeB)切换到目标eNodeB。
S1002、MME接收eNodeB发送的切换请求消息。
S1003、MME确定目标UE无法从当前eNodeB切换到目标eNodeB。
其中，示例性的，当目标eNodeB的控制面故障时，由于MME无法通知目标eNodeB执行切换，因此，目标eNodeB与SGW之间无法建立用户面语音承载，即MME确定目标UE无法从当前eNodeB切换到目标eNodeB。
S1004、MME向eNodeB发送携带目标UE的标识SRVCC切换请求消息。
S1005、eNodeB接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
S1006、eNodeB确定自身无法继续为目标UE提供语音业务。
S1007、eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
需要说明的是，本发明实施例S1001-S1007中的相关内容的描述可以参考本发明实施例S501-S508中对应内容的描述，本处不再一一赘述。
本发明实施例提供的语音业务切换的方法，由于在确定目标UE无法从当前eNodeB切换到目标eNodeB之后，MME能够向当前eNodeB发送SRVCC切换请求消息，以指示当前eNodeB将目标UE的语音业务从LTE网络切换到CS网络。这样，便避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种MME，如图12所示，该MME包括：第一确定单元111和第一发送单元112。
第一确定单元111，用于确定LTE网络的网络侧存在异常；LTE网络的网络侧建立有目标UE的语音承载。
第一发送单元112，用于向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
其中，在第一确定单元111确定LTE网络的网络侧存在异常之后，第一发送单元112向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB根据接收到的SRVCC切换请求消息中携带的目标UE的标识，按照3GPP标准的SRVCC切换流程，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，在一种可能的实现方式中，如图13所示，第一确定单元111包括：第一接收模块1111和第一确定模块1112。
第一接收模块1111，用于接收eNodeB发送的切换请求消息；切换请求消息用于通知MME目标UE需从eNodeB切换到目标eNodeB。
第一确定模块1112，用于确定目标UE无法从当前eNodeB切换到目标eNodeB。
其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
在本发明实施例中，进一步的，在另一种可能的实现方式中，如图14所示，第一确定单元111包括：第二接收模块1113。该MME还可以包括：第二确定单元113。
第二接收模块1113，用于接收第一网络设备发送的连接异常消息；连接异常消息用于反馈用户面连接出现异常；连接异常消息包含：至少一个满足预定条件的UE的EPS承载标识。
第二确定单元113，用于在第一发送单元112向eNodeB发送携带目标UE的标识的SRVCC切换请求消息之前，根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载的UE确定为目标UE，或者，根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载且支持SRVCC切 换的UE确定为目标UE。
在本发明实施例中，进一步的，第二接收模块1113，具体用于接收第一网络设备在检测到自身与第二网络设备之间的用户面连接出现异常后发送的连接异常消息。
其中，该连接异常消息中包括满足预定条件的UE的EPS承载标，该满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
在本发明实施例中，进一步的，第二接收模块1113，具体用于接收第一网络设备在确定自身需要重启后发送的连接异常消息。
其中，该连接异常消息中包括满足预定条件的UE的EPS承载标识，
该满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明实施例提供的MME，在确定LTE网络的网络侧存在异 常之后，MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。由于MME在确定LTE网络的网络侧存在异常之后，能够指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种第一网络设备，如图15所示，该第一网络设备包括：第一检测单元121、第一获取单元122和第二发送单元123。
第一检测单元121，用于检测到长期演进LTE网络的网络侧存在异常。
第一获取单元122，用于获取至少一个满足预定条件的UE的EPS承载标识。
第二发送单元123，用于向MME发送连接异常消息。
其中，连接异常消息用于反馈用户面连接出现异常，该连接异常消息包含：至少一个满足预定条件的UE的EPS承载标识。
在本发明实施例中，进一步的，第一检测单元121，具体用于检测到第一网络设备与第二网络设备之间的用户面连接出现异常。
满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
在本发明实施例中，进一步的，第一检测单元121，具体用于检测到自身需要重启。
满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明实施例提供的第一网络设备，在检测到用户面连接出现异常之后，第一网络设备获取满足预定条件的UE的EPS承载标识，并将获取到的满足预定条件的UE的EPS承载标识携带在连接异常消息中发送至MME，以便MME根据UE的EPS承载标识确定目标UE，并指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种eNodeB，如图16所示，该eNodeB包括：第一接收单元131和第一切换单元132。
第一接收单元131，用于接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
第一切换单元132，用于将第一接收单元131接收到的目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，如图17所示，该eNodeB还包括：第三发送单元133。
第三发送单元133，用于在第一接收单元131接收MME发送的携带目标UE的标识的SRVCC切换请求消息之前，向MME发送切换请求消息；切换请求消息用于通知MME目标UE需从当前eNodeB切换到目标eNodeB。
其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
在本发明实施例中，进一步的，该eNodeB还包括：第三确定单元134。
第三确定单元134，用于在第一切换单元132将目标UE的语音业务从LTE网络切换到CS网络之前，确定自身无法继续为目标UE提供语音业务。
在本发明实施例中，进一步的，该eNodeB还包括：第二接收单元135，用于在第一切换单元132将目标UE的语音业务从LTE网络切换到CS网络之前，接收目标UE发送的CS网络的无线测量报告。
第一切换单元132，具体用于根据第二接收单元135接收到的CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该eNodeB还包括：第四发送单元136，用于在第二接收单元135接收目标UE发送的CS网络的无线测量报告之前，向目标UE发送通知消息；通知消息用于通知目标UE上报CS网络的无线测量报告。
本发明实施例提供的eNodeB，在接收到MME发送的携带目标UE的标识的SRVCC切换请求消息之后，eNodeB根据SRVCC切换请求消息中携带的目标UE的标识，将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种eNodeB，如图18所示，该eNodeB包括：第二检测单元141、第二获取单元142、第四确定单元143和第二切换单元144。
第二检测单元141，用于检测eNodeB与SGW之间的用户面连接是否出现异常。
第二获取单元142，用于当第二检测单元141检测到eNodeB与 SGW之间的用户面连接出现异常时，获取满足预定条件的UE的EPS承载标识；满足预定条件的UE为通过eNodeB与SGW之间的用户面连接进行业务传输的UE。
第四确定单元143，用于根据第二获取单元142获取到的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，或者，根据第二获取单元142获取到的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
第二切换单元144，用于将第四确定单元143确定出的目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，如图19所示，该eNodeB还包括：第三接收单元145。
第三接收单元145，用于在第二切换单元144将目标UE的语音业务从LTE网络切换到CS网络之前，接收目标UE发送的CS网络的无线测量报告。
第二切换单元144，具体用于根据第三接收单元145接收到的CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该eNodeB还包括：第五发送单元146。
第五发送单元146，用于在第三接收单元145接收目标UE发送的无线测量报告之前，向目标UE发送通知消息；通知消息用于通知目标UE上报CS网络的无线测量报告。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面 连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
本发明实施例提供的eNodeB，在检测到与SGW之间的用户面连接出现异常之后，eNodeB首先获取满足预定条件的UE的EPS承载标识，然后根据UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，再将确定出的目标UE的语音业务从LTE网络切换到CS网络。由于eNodeB在检测到与SGW之间的用户面连接出现异常之后，能够将UE的语音业务从LTE网络切换到CS网络，避免UE的语音业务受到用户面连接异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种MME，如图20所示，该MME包括：处理器151和发送器152。
处理器151，用于确定LTE网络的网络侧存在异常；LTE网络的网络侧建立有目标UE的语音承载。
发送器152，用于向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。
其中，在处理器151确定LTE网络的网络侧存在异常之后，发送器152向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB根据接收到的SRVCC切换请求消息中携带的目标UE的标识，按照3GPP标准的SRVCC切换流程，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该MME还包括：接收器153。
接收器153，用于接收eNodeB发送的切换请求消息；切换请求消息用于通知MME目标UE需从当前eNodeB切换到目标eNodeB。
其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
处理器151，具体用于确定目标UE无法从eNodeB切换到目标 eNodeB。
在本发明实施例中，进一步的，接收器153，还用于接收第一网络设备发送的连接异常消息；连接异常消息用于反馈用户面连接出现异常；连接异常消息包含：至少一个满足预定条件的UE的EPS承载标识。
处理器151，还用于在发送器152向eNodeB发送携带目标UE的标识的SRVCC切换请求消息之前，根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载的UE确定为目标UE，或者，根据满足预定条件的UE的EPS承载标识，将在LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为目标UE。
在本发明实施例中，进一步的，
所述接收器153，具体用于接收第一网络设备在检测到自身与第二网络设备之间的用户面连接出现异常后发送的连接异常消息。
其中，该连接异常消息中包括满足预定条件的UE的EPS承载标，该满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
在本发明实施例中，进一步的，所述接收器153，具体用于接收第一网络设备在确定自身需要重启后发送的连接异常消息。
其中，该连接异常消息中包括满足预定条件的UE的EPS承载标识，
该满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定 用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明实施例提供的MME，在确定LTE网络的网络侧存在异常之后，MME向eNodeB发送携带目标UE的标识的SRVCC切换请求消息，以便eNodeB将目标UE的语音业务从LTE网络切换到CS网络。由于MME在确定LTE网络的网络侧存在异常之后，能够指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种第一网络设备，如图21所示，该第一网络设备包括：处理器161和发送器162。
处理器161，用于检测到LTE网络的网络侧存在异常。
处理器161，还用于获取至少一个满足预定条件的UE的EPS承载标识。
发送器162，用于向MME发送连接异常消息。
其中，连接异常消息用于反馈用户面连接出现异常，该连接异常消息包含：至少一个满足预定条件的UE的EPS承载标识。
在本发明实施例中，进一步的，处理器161，具体用于检测到第一网络设备与第二网络设备之间的用户面连接出现异常。
满足预定条件的UE为通过第一网络设备与第二网络设备之间的用户面连接进行业务传输的UE。
在本发明实施例中，进一步的，处理器161，具体用于检测到 自身需要重启。
满足预定条件的UE为通过第一网络设备的用户面进行业务传输的UE。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
需要说明的是，在本发明实施例中，第一网络设备可以为SGW，也可以为eNodeB，还可以为PGW，当第一网络设备为SGW时，第二网络设备为PGW；当第一网络设为eNodeB时，第二网络设备为SGW。本发明实施例在此不对第一网络设备和第二网络设备具体为哪个网元进行限制，可以根据实际应用场景的不同进行相应的选择。
本发明实施例提供的第一网络设备，在检测到用户面连接出现异常之后，第一网络设备获取满足预定条件的UE的EPS承载标识，并将获取到的满足预定条件的UE的EPS承载标识携带在连接异常消息中发送至MME，以便MME根据UE的EPS承载标识确定目标UE，并指示eNodeB将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种eNodeB，如图22所示，该eNodeB包括：接收器171和处理器172。
接收器171，用于接收MME发送的携带目标UE的标识的SRVCC切换请求消息。
处理器172，用于将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该eNodeB还包括：发送器173。
发送器173，用于在接收器171接收MME发送的携带目标UE的标识的SRVCC切换请求消息之前，向MME发送切换请求消息；切换请求消息用于通知MME目标UE需从当前eNodeB切换到目标eNodeB。
其中，当前eNodeB为目标UE当前接入的eNodeB，即为向MME发送切换请求消息的eNodeB。
在本发明实施例中，进一步的，处理器172，还用于在将目标UE的语音业务从LTE网络切换到CS网络之前，确定自身无法继续为目标UE提供语音业务。
在本发明实施例中，进一步的，接收器171，还用于在处理器172将目标UE的语音业务从LTE网络切换到CS网络之前，接收目标UE发送的CS网络的无线测量报告。
处理器172，具体用于根据CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，发送器173，还用于在接收器171接收目标UE发送的CS网络的无线测量报告之前，向目标UE发送通知消息；通知消息用于通知目标UE上报CS网络的无线测量报告。
本发明实施例提供的eNodeB，在接收到MME发送的携带目标UE的标识的SRVCC切换请求消息之后，eNodeB根据SRVCC切换请求消息中携带的目标UE的标识，将目标UE的语音业务从LTE网络切换到CS网络，避免了UE的语音业务受到网络侧异常的影响，从而提升了UE的语音业务的可靠性。
本发明另一实施例提供一种eNodeB，如图23所示，该eNodeB包括：处理器181。
处理器181，用于检测eNodeB与SGW之间的用户面连接是否 出现异常。
处理器181，还用于当检测到eNodeB与SGW之间的用户面连接出现异常时，获取满足预定条件的UE的EPS承载标识；满足预定条件的UE为通过eNodeB与SGW之间的用户面连接进行业务传输的UE。
处理器181，还用于根据获取到的UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，或者，根据获取到的UE的EPS承载标识，将建立有语音承载且支持SRVCC切换的UE确定为目标UE。
处理器181，还用于将确定出的目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该eNodeB还包括：接收器182。
接收器182，用于在处理器181将目标UE的语音业务从LTE网络切换到CS网络之前，接收目标UE发送的CS网络的无线测量报告。
处理器181，具体用于根据接收器接收到的CS网络的无线测量报告，将目标UE的语音业务从LTE网络切换到CS网络。
在本发明实施例中，进一步的，该eNodeB还包括：发送器183。
发送器183，用于在接收器182接收目标UE发送的无线测量报告之前，向目标UE发送通知消息；通知消息用于通知目标UE上报CS网络的无线测量报告。
在本发明实施例中，进一步的，用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
在本发明实施例中，进一步的，用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值。
其中，第一预设阈值为预设的采用用户面连接的丢包率来确定用户面连接发生拥塞的临界值，第二预设阈值为预设的采用用户面连接的时延来确定用户面连接发生拥塞的临界值，第三预设阈值为 预设的采用用户面连接的抖动来确定用户面连接发生拥塞的临界值。
本发明实施例提供的eNodeB，在检测到自身与SGW之间的用户面连接出现异常之后，eNodeB首先获取满足预定条件的UE的EPS承载标识，然后根据UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，再将确定出的目标UE的语音业务从LTE网络切换到CS网络。由于eNodeB在检测到与SGW之间的用户面连接出现异常之后，能够将UE的语音业务从LTE网络切换到CS网络，避免UE的语音业务受到用户面连接异常的影响，从而提升了UE的语音业务的可靠性。
通过以上的实施方式的描述，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，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，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，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，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装置，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，机械或其它的形式。
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一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。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存在，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，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文：Read-Only Memory，简称：ROM)、随机存取存储器(英文：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。
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所述以权利要求的保护范围为准。

Claims (44)

  1. 一种语音业务切换的方法，其特征在于，包括：
    移动性管理实体MME确定长期演进LTE网络的网络侧存在异常；所述LTE网络的网络侧建立有目标用户设备UE的语音承载；
    所述MME向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息，以便所述eNodeB将所述目标UE的语音业务从所述LTE网络切换到电路交换CS网络。
  2. 根据权利要求1所述的方法，其特征在于，所述移动性管理实体MME确定长期演进LTE网络的网络侧存在异常，包括：
    所述MME接收所述eNodeB发送的切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB：
    所述MME确定所述目标UE无法从所述eNodeB切换到所述目标eNodeB。
  3. 根据权利要求1所述的方法，其特征在于，所述移动性管理实体MME确定长期演进LTE网络的网络侧存在异常，包括：
    所述MME接收第一网络设备发送的连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：至少一个满足预定条件的UE的演进分组系统EPS承载标识；
    所述MME向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，还包括：
    所述MME根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载的UE确定为所述目标UE；
    或者，所述MME根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为所述目标UE。
  4. 根据权利要求3所述的方法，其特征在于，
    所述连接异常消息是所述第一网络设备在检测到自身与第二网 络设备之间的用户面连接出现异常后发送的；
    所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
  5. 根据权利要求3所述的方法，其特征在于，
    所述连接异常消息是所述第一网络设备在确定自身需要重启后发送的；
    所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
  6. 根据权利要求4所述的方法，其特征在于，
    所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  7. 根据权利要求6所述的方法，其特征在于，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
  8. 一种语音业务切换的方法，其特征在于，包括：
    第一网络设备检测到长期演进LTE网络的网络侧存在异常；
    所述第一网络设备获取至少一个满足预定条件的用户设备UE的演进分组系统EPS承载标识；
    所述第一网络设备向移动性管理实体MME发送连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：所述至少一个满足预定条件的UE的EPS承载标识。
  9. 根据权利要求8所述的方法，其特征在于，所述第一网络设备检测到LTE网络的网络侧存在异常，包括：
    所述第一网络设备检测到自身与第二网络设备之间的用户面连 接出现异常；
    所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
  10. 根据权利要求8所述的方法，其特征在于，所述第一网络设备检测到LTE网络的网络侧存在异常，包括：
    所述第一网络设备检测到自身需要重启；
    所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
  11. 根据权利要求9所述的方法，其特征在于，
    所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  12. 根据权利要求11所述的方法，其特征在于，
    所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
  13. 一种语音业务切换的方法，其特征在于，包括：
    演进型基站eNodeB接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息；
    所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
  14. 根据权利要求13所述的方法，其特征在于，在所述演进型基站eNodeB接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，还包括：
    所述eNodeB向所述MME发送切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB。
  15. 根据权利要求14所述的方法，其特征在于，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
    所述eNodeB确定自身无法继续为所述目标UE提供语音业务。
  16. 根据权利要求13-15中任一项所述的方法，其特征在于，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
    所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告：
    所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络，包括：
    所述eNodeB根据所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
  17. 根据权利要求16所述的方法，其特征在于，在所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告之前，还包括：
    所述eNodeB向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
  18. 一种语音业务切换方法，其特征在于，包括：
    演进型基站eNodeB检测自身与服务网关SGW之间的用户面连接是否出现异常；
    当检测到自身与所述SGW之间的用户面连接出现异常时，所述eNodeB获取满足预定条件的UE的演进分组系统EPS承载标识；所述满足预定条件的UE为通过所述eNodeB与所述SGW之间的用户面连接进行业务传输的UE；
    所述eNodeB根据所述UE的EPS承载标识，将建立有语音承载的UE确定为目标UE；或者，所述eNodeB根据所述UE的EPS承载 标识，将建立有语音承载且支持单无线承载语音呼叫连续性SRVCC切换的UE确定为所述目标UE；
    所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
  19. 根据权利要求18所述的方法，其特征在于，在所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，还包括：
    所述eNodeB接收所述目标UE发送的所述CS网络的无线测量报告：
    所述eNodeB将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络，包括：
    所述eNodeB根据所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
  20. 根据权利要求19所述的方法，其特征在于，在所述eNodeB接收所述目标UE发送的无线测量报告之前，还包括：
    所述eNodeB向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
  21. 根据权利要求18-20中任一项所述的方法，其特征在于，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  22. 根据权利要求21所述的方法，其特征在于，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
  23. 一种移动性管理实体MME，其特征在于，所述MME包括： 第一确定单元和第一发送单元；
    所述第一确定单元，用于确定长期演进LTE网络的网络侧存在异常；所述LTE网络的网络侧建立有目标用户设备UE的语音承载；
    所述第一发送单元，用于向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息，以便所述eNodeB将所述目标UE的语音业务从所述LTE网络切换到电路交换CS网络。
  24. 根据权利要求23所述的MME，其特征在于，所述第一确定单元包括：第一接收模块和第一确定模块；
    所述第一接收模块，用于接收所述eNodeB发送的切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB；
    所述第一确定模块，用于确定所述目标UE无法从所述eNodeB切换到所述目标eNodeB。
  25. 根据权利要求23所述的MME，其特征在于，所述MME还包括：第二确定单元；所述第一确定单元包括：第二接收模块；
    所述第二接收模块，用于接收第一网络设备发送的连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：至少一个满足预定条件的UE的演进分组系统EPS承载标识：
    所述第二确定单元，用于在所述第一发送单元向演进型基站eNodeB发送携带所述目标UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载的UE确定为所述目标UE，或者，根据所述满足预定条件的UE的EPS承载标识，将在所述LTE网络的网络侧中建立有语音承载且支持SRVCC切换的UE确定为所述目标UE。
  26. 根据权利要求25所述的MME，其特征在于，
    所述第二接收模块，具体用于接收所述第一网络设备在检测到自 身与第二网络设备之间的用户面连接出现异常后发送的所述连接异常消息；
    所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
  27. 根据权利要求25所述的MME，其特征在于，
    所述第二接收模块，具体用于接收所述第一网络设备在确定自身需要重启后发送的所述连接异常消息；
    所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
  28. 根据权利要求25所述的MME，其特征在于，
    所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  29. 根据权利要求28所述的MME，其特征在于，
    所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
  30. 一种第一网络设备，其特征在于，所述第一网络设备包括：第一检测单元、第一获取单元和第二发送单元；
    所述第一检测单元，用于检测到长期演进LTE网络的网络侧存在异常；
    所述第一获取单元，用于获取至少一个满足预定条件的用户设备UE的演进分组系统EPS承载标识；
    所述第二发送单元，用于向移动性管理实体MME发送连接异常消息；所述连接异常消息用于反馈用户面连接出现异常；所述连接异常消息包含：所述至少一个满足预定条件的UE的EPS承载标识。
  31. 根据权利要求30所述的第一网络设备，其特征在于，
    所述第一检测单元，具体用于检测到所述第一网络设备与第二网络设备之间的用户面连接出现异常；
    所述满足预定条件的UE为通过所述第一网络设备与所述第二网络设备之间的用户面连接进行业务传输的UE。
  32. 根据权利要求30所述的第一网络设备，其特征在于，
    所述第一检测单元，具体用于检测到自身需要重启；
    所述满足预定条件的UE为通过所述第一网络设备的用户面进行业务传输的UE。
  33. 根据权利要求31所述的第一网络设备，其特征在于，
    所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  34. 根据权利要求33所述的第一网络设备，其特征在于，
    所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值的最大值为当用户终端UE无法使用所述用户面连接时所述用户面连接的丢包率；所述第二预设阈值的最大值为当所述UE无法使用所述用户面连接时所述用户面连接的时延；所述第三预设阈值的最大值为当所述UE无法使用所述用户面连接时所述用户面连接的抖动。
  35. 一种演进型基站eNodeB，其特征在于，所述eNodeB包括：第一接收单元和第一切换单元；
    所述第一接收单元，用于接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息；
    所述第一切换单元，用于将所述第一接收单元接收到的所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
  36. 根据权利要求35所述的eNodeB，其特征在于，所述eNodeB还包括：第三发送单元；
    所述第三发送单元，用于在所述第一接收单元接收移动性管理实体MME发送的携带目标用户设备UE的标识的单无线承载语音呼叫连续性SRVCC切换请求消息之前，向所述MME发送切换请求消息；所述切换请求消息用于通知所述MME所述目标UE需从所述eNodeB切换到目标eNodeB。
  37. 根据权利要求36所述的eNodeB，其特征在于，所述eNodeB还包括：第三确定单元；
    所述第三确定单元，用于在所述第一切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，确定自身无法继续为所述目标UE提供语音业务。
  38. 根据权利要求35-37中任一项所述的eNodeB，其特征在于，所述eNodeB还包括：第二接收单元；
    所述第二接收单元，用于在所述第一切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，接收所述目标UE发送的所述CS网络的无线测量报告；
    所述第一切换单元，具体用于根据所述第一接收单元接收到的所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
  39. 根据权利要求38所述的eNodeB，其特征在于，所述eNodeB还包括：第四发送单元；
    所述第四发送单元，用于在所述第一接收单元接收所述目标UE发送的所述CS网络的无线测量报告之前，向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
  40. 一种演进型基站eNodeB，其特征在于，所述eNodeB包括：第二检测单元、第二获取单元、第四确定单元和第二切换单元；
    所述第二检测单元，用于检测所述eNodeB与服务网关SGW之间的用户面连接是否出现异常；
    所述第二获取单元，用于当所述第二检测单元检测到所述 eNodeB与所述SGW之间的用户面连接出现异常时，获取满足预定条件的UE的演进分组系统EPS承载标识；所述满足预定条件的UE为通过所述eNodeB与所述SGW之间的用户面连接进行业务传输的UE；
    所述第四确定单元，用于根据所述第二获取单元获取到的所述UE的EPS承载标识，将建立有语音承载的UE确定为目标UE，或者，根据所述第二获取单元获取到的所述UE的EPS承载标识，将建立有语音承载且支持单无线承载语音呼叫连续性SRVCC切换的UE确定为所述目标UE；
    所述第二切换单元，用于将所述第四确定单元确定出的所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络。
  41. 根据权利要求40所述的eNodeB，其特征在于，所述eNodeB还包括：第三接收单元；
    所述第三接收单元，用于在所述第二切换单元将所述目标UE的语音业务从长期演进LTE网络切换到电路交换CS网络之前，接收所述目标UE发送的所述CS网络的无线测量报告；
    所述第二切换单元，具体用于根据所述第三接收单元接收到的所述CS网络的无线测量报告，将所述目标UE的语音业务从所述LTE网络切换到所述CS网络。
  42. 根据权利要求41所述的eNodeB，其特征在于，所述eNodeB还包括：第五发送单元；
    所述第五发送单元，用于在所述第三接收单元接收所述目标UE发送的无线测量报告之前，向所述目标UE发送通知消息；所述通知消息用于通知所述目标UE上报所述CS网络的无线测量报告。
  43. 根据权利要求40-42中任一项所述的eNodeB，其特征在于，所述用户面连接出现异常包括以下任意一种：用户面连接发生中断、用户面连接发生拥塞。
  44. 根据权利要求43所述的eNodeB，其特征在于，所述用户面连接发生拥塞满足以下至少一种条件：用户面连接的丢包率大于第一 预设阈值、用户面连接的时延大于第二预设阈值、用户面连接的抖动大于第三预设阈值；所述第一预设阈值为预设的采用所述用户面连接的丢包率来确定所述用户面连接发生拥塞的临界值，所述第二预设阈值为预设的采用所述用户面连接的时延来确定所述用户面连接发生拥塞的临界值，所述第三预设阈值为预设的采用所述用户面连接的抖动来确定所述用户面连接发生拥塞的临界值。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109951878A (zh) * 2017-12-20 2019-06-28 中国移动通信集团山东有限公司 一种语音业务切换方法、终端设备、网络侧设备及系统

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10165474B2 (en) * 2016-07-01 2018-12-25 Mediatek Inc. Volunteer domain change of existed service for supporting multiple services with service continuity
WO2018040103A1 (zh) * 2016-09-05 2018-03-08 华为技术有限公司 一种语音切换的方法、终端以及存储介质
CN108243464B (zh) * 2016-12-27 2021-03-23 中国移动通信集团浙江有限公司 VoLTE业务分流处理方法及装置
CN108243465B (zh) * 2016-12-27 2020-10-09 中国移动通信集团浙江有限公司 一种基于负载均衡的srvcc切换方法及基站
US11140598B2 (en) * 2017-06-29 2021-10-05 Telefonaktiebolaget Lm Ericsson (Publ) Network initiated inter-RAT handover
CN109936854B (zh) * 2017-12-15 2022-04-15 中国移动通信集团浙江有限公司 触发srvcc切换的方法及装置
US11509772B2 (en) * 2018-11-13 2022-11-22 Qualcomm Incorporated Methods for increasing Voice-over-Internet Protocol (VoIP) network coverage
CN111212376B (zh) * 2018-11-21 2021-06-11 中国移动通信集团河北有限公司 关联实时位置及语音质量结果的方法、装置、设备及介质
US11792694B2 (en) * 2020-05-29 2023-10-17 T-Mobile Usa, Inc. Packet-switched to circuit-switched handover during VOIP call initiation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023162A2 (en) * 2006-08-22 2008-02-28 Vodafone Group Plc Methods for call continuity telecommunication systems
WO2010044730A2 (en) * 2008-10-15 2010-04-22 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for mobility selection of voice over the evolved packet system
CN101931988A (zh) * 2009-06-26 2010-12-29 华为技术有限公司 一种网络切换方法、演进基站及通信系统
CN104010318A (zh) * 2013-02-22 2014-08-27 华为技术有限公司 传输业务的方法和装置
CN104038964A (zh) * 2013-03-06 2014-09-10 华为技术有限公司 实现拥塞控制的方法及装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2526860C2 (ru) * 2009-04-23 2014-08-27 Телефонактиеболагет Л М Эрикссон (Пабл) Индикатор хэндовера от ps k cs
US8644832B2 (en) * 2010-08-12 2014-02-04 At&T Intellectual Property I, L.P. Redirecting handovers in LTE networks
JP5655958B2 (ja) * 2011-01-19 2015-01-21 ▲ホア▼▲ウェイ▼技術有限公司 ハンドオーバ方法およびモビリティ管理ネットワーク要素
WO2014067143A1 (zh) * 2012-11-02 2014-05-08 华为技术有限公司 用于切换到电路交换域的方法、设备和系统
CN104010324B (zh) 2013-02-22 2018-04-27 华为技术有限公司 控制服务的方法、移动管理实体和移动交换中心
KR20150014834A (ko) * 2013-07-30 2015-02-09 삼성전자주식회사 특정 서비스를 지속적으로 제공하는 방법 및 장치
ES2538427B1 (es) * 2013-12-19 2016-05-19 Vodafone Espana Sau Un procedimiento, dispositivos y sistema para controlar la provisión de servicios de voz en redes de comunicaciones móviles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023162A2 (en) * 2006-08-22 2008-02-28 Vodafone Group Plc Methods for call continuity telecommunication systems
WO2010044730A2 (en) * 2008-10-15 2010-04-22 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for mobility selection of voice over the evolved packet system
CN101931988A (zh) * 2009-06-26 2010-12-29 华为技术有限公司 一种网络切换方法、演进基站及通信系统
CN104010318A (zh) * 2013-02-22 2014-08-27 华为技术有限公司 传输业务的方法和装置
CN104038964A (zh) * 2013-03-06 2014-09-10 华为技术有限公司 实现拥塞控制的方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109951878A (zh) * 2017-12-20 2019-06-28 中国移动通信集团山东有限公司 一种语音业务切换方法、终端设备、网络侧设备及系统
CN109951878B (zh) * 2017-12-20 2021-07-09 中国移动通信集团山东有限公司 一种语音业务切换方法、终端设备、网络侧设备及系统

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