WO2017045259A1 - 业务处理方法、业务处理装置和通信系统 - Google Patents

业务处理方法、业务处理装置和通信系统 Download PDF

Info

Publication number
WO2017045259A1
WO2017045259A1 PCT/CN2015/094597 CN2015094597W WO2017045259A1 WO 2017045259 A1 WO2017045259 A1 WO 2017045259A1 CN 2015094597 W CN2015094597 W CN 2015094597W WO 2017045259 A1 WO2017045259 A1 WO 2017045259A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
term evolution
long
signal quality
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/094597
Other languages
English (en)
French (fr)
Inventor
吴晓波
崇卫微
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BR112018005042-3A priority Critical patent/BR112018005042B1/pt
Priority to MYPI2018701024A priority patent/MY201299A/en
Priority to RU2018113441A priority patent/RU2689188C1/ru
Priority to KR1020187010079A priority patent/KR102043254B1/ko
Priority to JP2018513756A priority patent/JP6771547B2/ja
Priority to EP20175303.5A priority patent/EP3790309B1/en
Priority to EP15901179.0A priority patent/EP3174356B1/en
Priority to KR1020197032732A priority patent/KR102106044B1/ko
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201580083147.4A priority patent/CN108029036B/zh
Priority to US15/441,440 priority patent/US10694571B2/en
Publication of WO2017045259A1 publication Critical patent/WO2017045259A1/zh
Anticipated expiration legal-status Critical
Priority to US16/867,892 priority patent/US11497076B2/en
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • 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]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer

Definitions

  • the present invention relates to the field of communication technologies, and in particular, to a service processing method, a service processing device, and a communication system.
  • the voice service of the LTE (Long Term Evolution) network is called VoIP (Voice over LTE).
  • VoIP Voice over LTE
  • the VOLTE service requires higher performance for LTE networks than for data services.
  • the inventor of the present invention found in the research and practice that the existing mechanism mainly refers to whether the resources of the cell are sufficient in the process of establishing the VOLTE service, and will try to establish the whole cell when the resources of the VOLTE can be satisfied.
  • Proprietary bearer for VOLTE services In some scenarios, the stability of the VOLTE service established based on the existing mechanism is not good, and sometimes the user's call experience is seriously affected.
  • the embodiments of the present invention provide a service processing method, a related device, and a communication system, so as to improve the stability of the created VOLTE service, thereby improving the user's call experience.
  • a first aspect of the embodiments of the present invention provides a service processing method, including:
  • the access network device receives a bearer setup request message of the VOLTE service from the core network device;
  • the rejecting the bearer setup request message includes: sending, to the core network device, a response message rejecting the bearer setup request message, where The response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call.
  • the response message carries a cause value of a bearer establishment failure of the VOLTE service.
  • the sending the rejection to the core network device includes: sending a response message of the bearer setup request message to the mobility management network element MME, the response message causing the internet protocol multimedia subsystem IMS to trigger the terminal to initiate a circuit domain fallback call.
  • the access network device determines, according to the LTE network uplink signal quality parameter of the terminal of the VOLTE service and/or the LTE network downlink signal quality parameter, that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the terminal.
  • the method further includes:
  • the access network device sends a first measurement control instruction to the terminal; the access network device receives a first measurement report sent by the terminal in response to the first measurement control instruction, where the first measurement
  • the report carries the downlink signal quality parameter of the LTE network of the terminal.
  • the first measurement control instruction may be used to instruct the terminal to measure an LTE network signal quality.
  • the calling terminal or called terminal of the VOLTE service in the eighth possible implementation manner of the first aspect, is the calling terminal or called terminal of the VOLTE service.
  • the method further includes the access network device determining that the terminal is registered to the circuit switched domain.
  • the method further includes:
  • the access network device Receiving, by the access network device, a notification message from the core network device, where the notification message carries indication information indicating that the terminal has been registered to a circuit switched domain; wherein the access network device is based on the notification The message determines that the terminal is registered to the circuit switched domain.
  • the access network device receives the core After the bearer setup request message of the VOLTE service of the network device, before the rejecting the bearer setup request message, the method further includes: determining, by the access network device, that the 2G/3G network signal quality of the terminal meets the voice service .
  • the method further includes: the access network device sending a second measurement control command to the terminal, where the second measurement control The instruction is used to instruct the terminal to measure a 2G/3G network signal quality; the access network device receives a second measurement report sent by the terminal in response to the second measurement control instruction, where the second measurement report carries Downlink signal quality parameters of the 2G/3G network of the terminal.
  • a second aspect of the embodiments of the present invention provides a service processing method, including:
  • the terminal determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, the terminal rejects the call request message.
  • the rejecting the call request message includes: the terminal sending a response message for rejecting the call request message to the IMS network, where the response message is used by the IMS network to trigger the terminal to initiate a circuit domain fallback call. .
  • the terminal is based on an LTE network uplink signal quality parameter of the terminal and/or an LTE network
  • the downlink signal quality parameter determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the call request message is Invite invite message.
  • the response message is a temporary invalidation response message.
  • a third aspect of the embodiments of the present invention provides a service processing method, which may include:
  • the terminal receives a user instruction indicating establishment of a VOLTE service
  • the terminal determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, the terminal calls the called terminal of the VOLTE service in the circuit switched domain.
  • the circuit switched domain includes a circuit switched domain of a 2G/3G network and/or a 1xRTT network of a CDMA network.
  • the terminal determines an LTE network signal of the terminal based on an LTE network uplink signal quality parameter of the terminal and/or an LTE network uplink signal quality parameter. The quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the receiving indication indicates that the VOLTE service is established.
  • the method further includes: the terminal measuring downlink signal quality of the LTE network, to obtain an LTE network downlink signal quality parameter of the terminal.
  • the method Before calling the called terminal of the VOLTE service, the method further includes: the terminal determining that the terminal is registered to a circuit switched domain.
  • the method Before calling the called terminal of the VOLTE service, the method further includes: when the terminal has not registered to the circuit switched domain, the terminal is registered in the circuit switched domain.
  • the registering the terminal in the circuit switched domain includes: the terminal registering in a circuit switched domain by using a joint attaching manner, Or the terminal resides in the circuit switched domain and registers with the circuit switched domain through a reselection procedure.
  • the VOLTE service is called in the circuit switched domain Before the called terminal, the method further includes: the terminal determining that the network signal quality of the circuit switched domain satisfies a voice service.
  • the method further includes: the terminal receiving a notification message from the long term evolution network; the notification The message carries a long term evolution network uplink signal quality parameter and/or a long term evolution network downlink signal quality parameter of the terminal, where the notification message is used by the terminal to determine that the long term evolution network signal quality of the terminal cannot meet the VOLTE business.
  • the notification message is from an access network device of the long term evolution network.
  • a fourth aspect of the embodiments of the present invention provides an access network device, including:
  • a receiving unit configured to receive a bearer setup request message of a VOLTE service from a core network device
  • a service control unit configured to reject the bearer setup request message if the LTE network signal quality of the terminal that determines the VOLTE service cannot satisfy the VOLTE service.
  • the service control unit is specifically configured to: if it is determined that the LTE network signal quality of the terminal of the VOLTE service cannot meet the VOLTE service, The core network device sends a response message rejecting the bearer setup request message, where the response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call.
  • the response message carries a cause value of a bearer establishment failure of the VOLTE service.
  • the service control unit is specifically configured to: if it is determined that the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service, send a response message of the bearer setup request message to the mobility management network element MME, where the response message is The Internet Protocol Multimedia Subsystem IMS is caused to trigger the terminal to initiate a circuit domain fallback call.
  • the access network device determines, according to the LTE network uplink signal quality parameter of the terminal of the VOLTE service and/or the LTE network downlink signal quality parameter, that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the access network device further includes a sending unit, configured to send, by the receiving unit, a first measurement control instruction to the terminal after receiving a bearer setup request message of the VOLTE service from the core network device, where the receiving unit
  • the method further includes: receiving, by the terminal, a first measurement report that is sent by the terminal in response to the first measurement control instruction, where the first measurement report carries an LTE network downlink signal quality parameter of the terminal.
  • the calling terminal or called terminal of the VOLTE service in the eighth possible implementation manner of the fourth aspect, The calling terminal or called terminal of the VOLTE service.
  • the service control unit further And determining, before rejecting the bearer setup request message, that the terminal is registered to a circuit switched domain.
  • the receiving unit is further configured to receive a notification message from the core network device, where the notification message is Carrying indication information indicating that the terminal has been registered to the circuit switched domain; wherein the service control unit determines that the terminal has registered to the circuit switched domain based on the notification message.
  • the service control unit is further configured to: after receiving the bearer setup request message of the VOLTE service from the core network device, determine that the 2G/3G network signal quality of the terminal satisfies the voice service before rejecting the bearer setup request message.
  • the access network device further includes a sending unit, configured to receive VOLTE from the core network device After the bearer setup request message of the service, the second measurement control command is sent to the terminal, where the second measurement control command is used to indicate that the terminal measures the 2G/3G network signal quality; the receiving unit is further configured to receive the And a second measurement report that is sent by the terminal in response to the second measurement control instruction, where the second measurement report carries a downlink signal quality parameter of the 2G/3G network of the terminal.
  • a fifth aspect of the embodiments of the present invention provides a terminal, including:
  • a receiving unit configured to receive a call request message from a VOLTE service of an Internet Protocol Multimedia Subsystem (IMS) network;
  • IMS Internet Protocol Multimedia Subsystem
  • a service control unit configured to reject the call request message if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the rejecting the call The request message includes: the terminal sending a response message for rejecting the call request message to the IMS network, where the response message is used by the IMS network to trigger the terminal to initiate a circuit domain fallback call.
  • the terminal is based on an LTE network uplink signal quality parameter of the terminal and/or an LTE network
  • the downlink signal quality parameter determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an uplink signal strength of the LTE network of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the call request message is Invite invite message.
  • the response message is a temporary failure response message.
  • a sixth aspect of the embodiments of the present invention provides a terminal, including:
  • a receiving unit configured to receive a user instruction indicating establishment of a VOLTE service
  • a service control unit configured to: when it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, call the called terminal of the VOLTE service in a circuit switched domain.
  • the service processing unit determines the LTE of the terminal based on an LTE network uplink signal quality parameter of the terminal and/or an LTE network uplink signal quality parameter.
  • the network signal quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: the terminal on an LTE network At least one of a line signal strength, an LTE network uplink signal signal to noise ratio of the terminal, and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the terminal further includes: a measuring unit, configured to measure downlink signal quality of the LTE network after receiving the user instruction indicating that the VOLTE service is established, to obtain an LTE network downlink signal quality parameter of the terminal.
  • a measuring unit configured to measure downlink signal quality of the LTE network after receiving the user instruction indicating that the VOLTE service is established, to obtain an LTE network downlink signal quality parameter of the terminal.
  • the service control unit is further configured to: Before the circuit switched domain calls the called terminal of the VOLTE service, it is determined that the terminal has registered to the circuit switched domain.
  • the service control unit is further used Before registering the called terminal of the VOLTE service in the circuit switched domain, registering in the circuit switched domain if the terminal has not registered to the circuit switched domain.
  • the service control unit registration in the circuit switched domain includes: registering in a circuit switched domain by means of joint attach, or The selection process resides in the circuit switched domain and is registered in the circuit switched domain.
  • the service control unit is further configured to be in the circuit switched domain Before calling the called terminal of the VOLTE service, determining that the network signal quality of the circuit switched domain satisfies the voice service.
  • the receiving unit further And receiving, by the service control unit, a notification message from the long-term evolution network, where the notification message carries the long-term evolution network uplink signal quality of the terminal, before the service control unit calls the called terminal of the VOLTE service in the circuit switched domain Parameters and/or long term evolution network downlink signal quality parameters, the notification message being used by the processor to determine that the long term evolution network signal quality of the terminal cannot satisfy the VOLTE service.
  • the notification message is from an access network device of the long term evolution network.
  • a seventh aspect of the embodiments of the present invention provides an access network device, including:
  • a network interface configured to receive a bearer setup request message of a VOLTE service from a core network device
  • the processor is configured to reject the bearer setup request message if the LTE network signal quality of the terminal that determines the VOLTE service cannot satisfy the VOLTE service.
  • the processor is specifically configured to: if the LTE network signal quality of the terminal of the VOLTE service is determined to be incapable of satisfying the VOLTE service, send, by using the network interface, a response message rejecting the bearer setup request message to the core network device.
  • the response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call.
  • the response message carries a cause value of a bearer establishment failure of the VOLTE service.
  • the processor is specifically configured to: if it is determined that the signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service, send, by using the network interface, a response message of the bearer setup request message to the mobility management network element MME, where The response message causes the Internet Protocol Multimedia Subsystem IMS to trigger the terminal to initiate a circuit domain fallback call.
  • the processor determines an LTE network signal of the terminal based on an LTE network uplink signal quality parameter of the terminal of the VOLTE service and/or an LTE network downlink signal quality parameter. The quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an uplink signal strength of the LTE network of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the processor is further configured to: after receiving a bearer setup request message of the VOLTE service from the core network device, send a first measurement control instruction to the terminal by using the network interface; and receive the terminal by using the network interface And a first measurement report sent in response to the first measurement control instruction, where the first measurement report carries an LTE network downlink signal quality parameter of the terminal.
  • the calling terminal or called terminal of the VOLTE service in the eighth possible implementation manner of the seventh aspect, The calling terminal or called terminal of the VOLTE service.
  • the processor is further used And, before rejecting the bearer setup request message, determining that the terminal is registered to the circuit switched domain.
  • the network interface is further configured to receive a notification message from the core network device, where the notification message is carried Instructing information indicating that the terminal has registered to a circuit switched domain; wherein the processor determines that the terminal has registered to a circuit switched domain based on the notification message.
  • the processor is further configured to receive, from the core network device After the bearer setup request message of the VOLTE service, before rejecting the bearer setup request message, it is determined that the 2G/3G network signal quality of the terminal satisfies the voice service.
  • the network interface is further configured to: after receiving a bearer setup request message of the VOLTE service from the core network device Transmitting, to the terminal, a second measurement control instruction, where the second measurement control instruction is used to indicate that the terminal measures a 2G/3G network signal quality, and receives a second that is sent by the terminal in response to the second measurement control instruction.
  • the measurement report wherein the second measurement report carries a downlink signal quality parameter of the 2G/3G network of the terminal.
  • An eighth aspect of the present invention provides a terminal, including:
  • a receiver configured to receive a call request message from a VOLTE service of an Internet Protocol Multimedia Subsystem (IMS) network;
  • IMS Internet Protocol Multimedia Subsystem
  • the processor is configured to reject the call request message if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the terminal further includes a transmitter
  • the processor is specifically configured to send, by the transmitter, a response message for rejecting the call request message to the IMS network, where the response message is used by the IMS network to trigger the terminal to initiate a circuit domain fallback call. .
  • the processor is based on an LTE network uplink signal quality parameter of the terminal and/or LTE
  • the network downlink signal quality parameter determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an uplink signal strength of the LTE network of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the call request message is Invite invite message.
  • the response message is a temporary invalidation response message.
  • a ninth aspect of the embodiments of the present invention provides a terminal, including:
  • a user interface configured to receive a user instruction indicating establishment of a VOLTE service
  • a processor configured to initiate a called terminal that calls the VOLTE service in the circuit switched domain if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the processor determines an LTE network of the terminal based on an LTE network uplink signal quality parameter of the terminal and/or an LTE network uplink signal quality parameter The signal quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, At least one of an LTE network uplink signal SNR of the terminal and an LTE network uplink packet loss rate of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes And at least one of a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal.
  • the processor is further configured to: after receiving the user instruction that is used to establish the VOLTE service, measure the downlink signal quality of the LTE network to obtain the downlink signal quality parameter of the LTE network of the terminal.
  • the processor is further used Before the circuit switched domain calls the called terminal of the VOLTE service, it is determined that the terminal is registered to the circuit switched domain.
  • the processor is further used Before, in the circuit switched domain, the called terminal of the VOLTE service is called, the circuit switched domain is registered in the case that the terminal has not registered to the circuit switched domain.
  • the registering, by the processor, in the circuit switched domain includes: registering in a circuit switched domain by using a joint attaching manner, or The reselection process resides in the circuit switched domain and is registered in the circuit switched domain.
  • the processor is further used in the circuit Before the switching domain calls the called terminal of the VOLTE service, it is determined that the network signal quality of the circuit switched domain satisfies the voice service.
  • the terminal further includes a network An interface, wherein the network interface is configured to receive, by the processor, a notification message from the long term evolution network before the circuit switched domain calls the called terminal of the VOLTE service, where the notification message carries the terminal The long term evolution network uplink signal quality parameter and/or the long term evolution network downlink signal quality parameter, wherein the notification message is used by the processor to determine that the long term evolution network signal quality of the terminal cannot satisfy the VOLTE service.
  • the notification message is from an access network device of the long term evolution network.
  • a tenth aspect of the present invention provides a communication system, including:
  • a tenth aspect of the present invention provides a service processing method, including:
  • the core network device of the long term evolution network sends a bearer setup request message of the VOLTE service to the access network device of the long term evolution network;
  • the core network device sends a notification message to the access network device, where the notification message carries indication information indicating that the terminal of the VOLTE service has been registered to the circuit switched domain; the notification message is used by the access network
  • the device is configured to determine that the terminal has registered to the circuit switched domain before rejecting the bearer setup request message if it is determined that the signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service.
  • the eleventh aspect of the present invention further provides a core network device, including: a network interface and a processor,
  • the network interface is configured to send a bearer setup request message of the VOLTE service to the access network device, and send a notification message to the access network device, where the notification message carries a terminal that is used to indicate that the VOLTE service is registered.
  • the indication information of the circuit switched domain is obtained; wherein the notification message is used by the access network device to reject the bearer setup request message if it is determined that the signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service Previously, it was determined that the terminal was registered to the circuit switched domain.
  • the access network device after receiving the bearer setup request message of the VOLTE service from the core network device, the access network device determines that the LTE network signal quality of the terminal of the VOLTE service cannot meet the requirements. In the VOLTE service, the access network device rejects the bearer setup request message, that is, in the bearer setup process of the VOLTE service, if the access network device discovers that the LTE network signal quality of the terminal cannot meet the requirements In the VOLTE service, the access network device will prevent the bearer establishment of the VOLTE service, which is beneficial to improving the stability of the created VOLTE service to a certain extent, thereby improving the user's calling experience.
  • FIG. 1 is a schematic diagram of a network deployment architecture according to an embodiment of the present invention
  • FIG. 1 is a schematic flowchart of a service processing method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another service processing method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of another service processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of another service processing method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of another service processing method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of another service processing method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an access network device according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a terminal according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another terminal according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another access network device according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another terminal according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another terminal according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a core network device according to an embodiment of the present invention.
  • the embodiments of the present invention provide a service processing method, a related device, and a communication system, so as to improve the stability of the created VOLTE service, thereby improving the user's call experience.
  • FIG. 1 is a schematic diagram of a communication network according to an embodiment of the present invention.
  • the evolved base station eNB, Evolved NodeB
  • the core network device of the LTE network shown in the example shown in FIG. 1 includes a Mobility Management Entity (MME), a Serving Gateway (SGW), and a Packet Data Network Gateway (PGW, PDN Gateway), etc., and a core network device.
  • MME Mobility Management Entity
  • SGW Serving Gateway
  • PGW Packet Data Network Gateway
  • PDN Gateway Packet Data Network Gateway
  • dedicated bearer eg, service quality level identifier (QCI, QoS).
  • Class Identifier 1) Used to convey relevant user plane data (media data) of the VOLTE service.
  • the P-CSCF (which can be divided into the calling party P-CSCF and the called party P-CSCF) is the first contact point of the UE accessing the Internet Protocol Multimedia Subsystem (IMS) network in the VOLTE service process.
  • IMS Internet Protocol Multimedia Subsystem
  • the P-CSCF can be responsible for all VOLTE related signaling and complete routing control.
  • the P-CSCF may also be responsible for sending related control messages and the like to the Policy and Charging Rules Function (PCRF) entity during the VOLTE call.
  • PCRF Policy and Charging Rules Function
  • the S-CSCF (which can be divided into the calling party S-CSCF and the called party S-CSCF) is a service switching center of the IMS network, and the S-CSCF can be mainly responsible for receiving and processing the UE's registration request, user management, session control, Service switching, service control, SIP message processing and billing, etc.
  • the S-CSCF may also trigger, for example, a Session Initiation Protocol (SIP) request to the corresponding domain selection service device according to the triggering principle of the application.
  • SIP Session Initiation Protocol
  • the terminating access domain selection may be responsible for connecting the called voice session to the corresponding domain (for example, a CS domain or an IMS domain).
  • the called domain selection device may decide to initiate a VOLTE call (corresponding to the IMS domain) or a conventional circuit domain call (corresponding to the CS domain) to the UE.
  • Some technical solutions of the embodiments of the present invention may be specifically implemented based on the communication network architecture shown in FIG. 1-a or its variant architecture.
  • the technical solution of the embodiment of the present invention strives to improve the stability of the established VOLTE service, thereby improving the user's calling experience.
  • FIG. 1-b is a schematic flowchart of a service processing method according to an embodiment of the present invention. As shown in FIG. 1-b, an embodiment of the present invention provides a service office. Methods can include:
  • the access network device receives a bearer setup request message of the VOLTE service from the core network device.
  • the access network device may be an access network device of the calling terminal of the VOLTE service, or may be an access network device of the called terminal of the VOLTE service.
  • the access network device may be an eNB or other device for wireless access of the terminal.
  • the core network device may be, for example, an MME or other device that can initiate or transmit a bearer setup request message.
  • the access network device rejects the bearer setup request message if it determines that the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service.
  • the terminal may be a calling terminal or a called terminal of the VOLTE service.
  • the terminal may be a user equipment (UE, User Equipment) or other forms of communication terminals.
  • UE User Equipment
  • Other forms of communication terminals UE, User Equipment
  • the LTE network signal quality of the terminal of the VOLTE service cannot specifically satisfy the VOLTE service, and the LTE network signal quality of the terminal of the VOLTE service cannot meet the user plane bearer of the VOLTE service (for example, QCI).
  • the bearer of 1 that is, the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the LTE network signal quality condition of the user plane bearer (required) of the VOLTE service.
  • the access network device after receiving the bearer setup request message of the VOLTE service from the core network device, the access network device determines that the LTE network signal quality of the terminal of the VOLTE service cannot meet the VOLTE The service, the access network device rejects the bearer setup request message, that is, in the bearer setup process of the VOLTE service, if the access network device discovers that the LTE network signal quality of the terminal cannot satisfy the VOLTE The service, then the access network device will block the bearer establishment of the VOLTE service, which is beneficial to improving the stability of the created VOLTE service to a certain extent, thereby improving the user's call experience.
  • LTE network weak coverage areas there are still many LTE network weak coverage areas, and it is impossible for an operator to perform LTE network signal quality of an LTE network in each area.
  • the coverage of a cell edge of a general LTE network is generally weak.
  • the terminal is in these areas. It may be impossible to initiate the establishment of a VOLTE service, which in turn helps the terminal to establish a call service through other means, which is beneficial to improving the stability of the successfully established call service.
  • the rejecting the bearer setup request message may include: sending, to the core network device, a response message rejecting the bearer setup request message, where the response message is used by the core network device to trigger the The terminal initiates a circuit domain fallback call.
  • the access network device may also reject the bearer setup request message by other means, for example, directly ignoring the received bearer setup request message.
  • the response message is used by the core network device to directly or indirectly trigger the CSFB (Circuit Switched Fallback) call.
  • the response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call through the IMS network.
  • the coverage of the cell edge of the LTE network is generally weak. Due to the weak coverage of the cell edge of the LTE network, the terminal may not be able to initiate the establishment of the VOLTE service in the area, and the response message is used by the core network device to trigger the The terminal initiates a circuit domain fallback call, forcing the terminal to establish a call service through circuit switching, which is beneficial to improving the stability of the successfully established call service.
  • the response message may further carry a cause value of the bearer establishment failure of the VOLTE service.
  • the sending, by the core network device, the response message rejecting the bearer setup request message may include: sending a response message of the bearer setup request message to the MME, where the response message causes the Internet Protocol Multimedia Subsystem IMS Triggering the terminal initiates a circuit domain fallback call.
  • the access network device may determine, according to the LTE network uplink signal quality parameter and/or the LTE network downlink signal quality parameter of the terminal of the VOLTE service, that the LTE network signal quality of the terminal cannot satisfy the VOLTE service. .
  • the LTE network uplink signal quality parameter of the terminal may include: an LTE network uplink signal strength of the terminal, an LTE network uplink signal SNR of the terminal, and an LTE network uplink packet loss rate of the terminal. At least one of them. Specifically, for example, if the LTE network uplink signal strength of the terminal is lower than the first threshold, the LTE network uplink signal SNR of the terminal is lower than the second threshold, and/or the LTE network uplink packet loss of the terminal The rate is higher than the third threshold, then the terminal can be considered The uplink signal quality of the LTE network cannot satisfy the VOLTE service.
  • the downlink signal quality parameter of the LTE network of the terminal includes: a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal. At least one. Specifically, for example, if the LTE network downlink signal strength of the terminal is lower than a fourth threshold, the LTE network downlink signal SNR of the terminal is lower than a fifth threshold, and/or the terminal's LTE network downlink packet loss If the rate is higher than the sixth threshold, the downlink signal quality of the LTE network of the terminal may not be considered to satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter and the LTE network downlink signal quality parameter of the terminal of the VOLTE service jointly determine whether the LTE network signal quality of the terminal can satisfy the VOLTE service.
  • the method may further include: the access network device sending the first measurement control instruction to the terminal; The access network device receives a first measurement report that is sent by the terminal in response to the first measurement control instruction, where the first measurement report carries an LTE network downlink signal quality parameter of the terminal. That is, after receiving the bearer setup request message of the VOLTE service from the core network device, the access network device may instruct the terminal to obtain the LTE network downlink signal quality parameter of the terminal in real time, and may be based on the terminal The downlink signal quality parameter of the LTE network is obtained in real time to determine whether the LTE network signal quality of the terminal can satisfy the VOLTE service.
  • the method before the rejecting the bearer setup request message, further includes: determining, by the access network device, that the terminal is registered to a circuit switched domain . That is, the access network device may reject the bearer setup request message if it is determined that the terminal has been registered to the circuit switched domain, and when the access network device determines that the terminal has not yet In the case of registering to the circuit switched domain, the access network device may not reject the bearer setup request even if the access network device determines that the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service. Message.
  • the method further includes: the access network device receiving a notification message from the core network device, where the notification message is carried to indicate the terminal Instructed information that has been registered to the circuit switched domain; wherein the access network device can be based on the The notification message determines that the terminal has registered to the circuit switched domain.
  • the access network device may also determine whether the terminal has been registered to the circuit switched domain based on other manners.
  • the method may further include: determining, by the access network device, that the 2G/3G (second generation mobile communication/third generation mobile communication) network signal quality of the terminal satisfies a voice service.
  • 2G/3G second generation mobile communication/third generation mobile communication
  • the access network device may determine, according to the 2G/3G uplink signal quality parameter of the terminal of the VOLTE service and/or the 2G/3G network downlink signal quality parameter, that the quality of the 2G/3G network signal of the terminal cannot be Satisfy the VOLTE service.
  • the uplink signal quality parameter of the 2G/3G network of the terminal may include: an uplink signal strength of the 2G/3G network of the terminal, a signal/noise ratio of the uplink signal of the 2G/3G network of the terminal, and 2G of the terminal.
  • /3G network at least one of the uplink packet loss rates. Specifically, for example, if the uplink signal strength of the 2G/3G network of the terminal is lower than a seventh threshold, the uplink signal SNR of the 2G/3G network of the terminal is lower than an eighth threshold, and/or 2G of the terminal. If the uplink packet loss rate of the /3G network is higher than the ninth threshold, it can be considered that the uplink signal quality of the 2G/3G network of the terminal cannot satisfy the voice service.
  • the downlink signal quality parameter of the 2G/3G network of the terminal includes: a downlink signal strength of the 2G/3G network of the terminal, a downlink signal SNR of the 2G/3G network of the terminal, and 2G/ of the terminal. At least one of the downlink packet loss rate of the 3G network. Specifically, for example, if the downlink signal strength of the 2G/3G network of the terminal is lower than the tenth threshold, the downlink signal SNR of the 2G/3G network of the terminal is lower than the eleventh threshold and/or the terminal If the downlink packet loss rate of the 2G/3G network is higher than the twelfth threshold, the downlink signal quality of the 2G/3G network of the terminal cannot be considered to satisfy the voice service.
  • the method may further include: the access network device to the terminal Sending a second measurement control instruction, the second measurement control instruction is used to instruct the terminal to measure a 2G/3G network signal quality; and the access network device receives the terminal response to the second measurement And a second measurement report sent by the quantity control command, wherein the second measurement report carries a downlink signal quality parameter of the 2G/3G network of the terminal.
  • the access network device may instruct the terminal to obtain the downlink signal quality parameter of the 2G/3G network of the terminal in real time, and according to the The real-time acquisition of the 2G/3G downlink signal quality parameter of the terminal determines whether the quality of the 2G/3G network signal of the terminal can satisfy the voice service.
  • a service processing method includes: a core network device of an LTE network sends a bearer setup request message of a VOLTE service to an access network device of a long term evolution network; and the core network device sends a notification to an access network device of the long term evolution network a message, the notification message carrying indication information indicating that the terminal of the VOLTE service has been registered to the circuit switched domain; wherein the notification message is used by the access network device when determining the terminal of the VOLTE service Before the signal quality cannot satisfy the VOLTE service, the terminal is determined to have registered to the circuit switched domain before rejecting the bearer setup request message.
  • FIG. 2 is a schematic flowchart diagram of another service processing method according to another embodiment of the present invention.
  • another service processing method provided by another embodiment of the present invention may include:
  • the terminal receives a call request message from a VOLTE service of the IMS network.
  • the call request message may be an invite invite message or other message used to establish a VOLTE service for a call.
  • the terminal rejects the call request message if it determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the terminal receives the VOLTE from the IMS network. After the call request message of the service, if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, the terminal rejects the call request message, that is, during the bearer establishment process of the VOLTE service. If the called terminal finds that its own LTE network signal quality cannot satisfy the VOLTE service, the called terminal will block the bearer establishment of the VOLTE service, which is beneficial to improve the stability of the created VOLTE service to a certain extent. Sex, which in turn enhances the user's calling experience.
  • LTE network weak coverage areas there are still many LTE network weak coverage areas, and it is impossible for an operator to perform LTE network signal quality of an LTE network in each area.
  • the coverage of a cell edge of a general LTE network is generally weak.
  • the terminal may not be able to initiate the establishment of the VOLTE service in these areas, thereby facilitating the terminal to establish the call service through other means, which is beneficial to improving the successfully established call service. Stability.
  • the rejecting the call request message may include: the terminal sending a response message for rejecting the call request message to the IMS network, where the response message is used by the IMS network to trigger the terminal Initiate a circuit domain fallback call.
  • the response message may be, for example, a temporary unavailable response message.
  • the temporarily unavailable response message may be a 480 response message.
  • the terminal may determine, according to the LTE network uplink signal quality parameter and/or the LTE network downlink signal quality parameter of the terminal, that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal may include: an LTE network uplink signal strength of the terminal, an LTE network uplink signal SNR of the terminal, and an LTE network uplink packet loss rate of the terminal. At least one of them. Specifically, for example, if the LTE network uplink signal strength of the terminal is lower than the first threshold, the LTE network uplink signal SNR of the terminal is lower than the second threshold, and/or the LTE network uplink packet loss of the terminal If the rate is higher than the third threshold, the uplink signal quality of the LTE network of the terminal may not be considered to satisfy the VOLTE service.
  • the downlink signal quality parameter of the LTE network of the terminal includes: a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal. At least one. Specifically, for example, if the terminal has an LTE network downlink signal If the strength is lower than the fourth threshold, the downlink signal SNR of the LTE network of the terminal is lower than the fifth threshold, and/or the downlink loss rate of the LTE network of the terminal is higher than the sixth threshold, the LTE of the terminal may be considered. The downlink signal quality of the network cannot satisfy the VOLTE service.
  • the terminal LTE network uplink signal quality parameter and the LTE network downlink signal quality parameter jointly determine whether the LTE network signal quality of the terminal can satisfy the VOLTE service situation.
  • the terminal may measure the downlink signal quality of the LTE network to obtain the LTE network downlink signal quality parameter of the terminal. That is, after receiving the call request message of the VOLTE service from the IMS network, the terminal may acquire the downlink signal quality parameter of the LTE network of the terminal in real time, and obtain the downlink signal quality parameter of the LTE network according to the real-time of the terminal. Determining whether the LTE network signal quality of the terminal can satisfy the VOLTE service.
  • the terminal obtains the LTE network uplink signal quality parameter of the terminal from the access network device. That is, after the terminal receives the call request message of the VOLTE service from the IMS network, the LTE network uplink signal quality parameter of the terminal may be obtained from the access network device in real time, and may be based on the acquired LTE network uplink signal quality parameter. Determining whether the LTE network signal quality of the terminal can satisfy the VOLTE service.
  • FIG. 3 is a schematic flowchart diagram of another service processing method according to another embodiment of the present invention.
  • another service processing method provided by another embodiment of the present invention may include:
  • a terminal receives a user instruction indicating establishment of a VOLTE service.
  • the user of the terminal wants to talk to another user based on the VOLTE service
  • the user can issue a user instruction indicating establishment of the VOLTE service.
  • the terminal determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, the terminal calls the called terminal of the VOLTE service in the circuit switched domain.
  • the terminal determines that the LTE network signal quality of the terminal cannot meet the VOLTE Service, then the terminal initiates a CSFB procedure to fall back to the circuit switched domain and to call the called terminal of the VOLTE service in the circuit switched domain.
  • the terminal After the terminal receives the user instruction indicating that the VOLTE service is established, if the terminal determines that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, the terminal calls in the circuit switched domain.
  • the called terminal of the VOLTE service that is, before the bearer preparing to establish the VOLTE service, if the calling terminal finds that its own LTE network signal quality cannot satisfy the VOLTE service, the calling terminal will block
  • the VOLTE service bearer is established, but the circuit switched domain connection is directly established, which is beneficial to improving the stability of the created call service to a certain extent, thereby improving the user's call experience. For example, there are still many weak coverage areas of LTE networks.
  • the coverage of cell edges in general LTE networks is usually weak, and the scheme of this embodiment is adopted. Due to the weak coverage of the cell edge of the LTE network, the terminal may not be able to initiate the establishment of the VOLTE service in these areas, thereby facilitating the terminal to establish the call service through other means, which is beneficial to improving the stability of the successfully established call service. .
  • the terminal may determine, according to the LTE network uplink signal quality parameter and/or the LTE network downlink signal quality parameter of the terminal, that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal may include: an LTE network uplink signal strength of the terminal, an LTE network uplink signal SNR of the terminal, and an LTE network uplink packet loss rate of the terminal. At least one of them. Specifically, for example, if the LTE network uplink signal strength of the terminal is lower than the first threshold, the LTE network uplink signal SNR of the terminal is lower than the second threshold, and/or the LTE network uplink packet loss of the terminal If the rate is higher than the third threshold, the uplink signal quality of the LTE network of the terminal may not be considered to satisfy the VOLTE service.
  • the downlink signal quality parameter of the LTE network of the terminal includes: a downlink signal strength of the LTE network of the terminal, a signal to noise ratio of the downlink signal of the LTE network of the terminal, and a downlink packet loss rate of the LTE network of the terminal. At least one. Specifically, for example, if the LTE network downlink signal strength of the terminal is lower than a fourth threshold, the LTE network downlink signal SNR of the terminal is lower than a fifth threshold, and/or the terminal's LTE network downlink packet loss The rate is higher than the sixth threshold, then the LTE network of the terminal can be considered The downlink downlink signal quality cannot satisfy the VOLTE service.
  • the terminal LTE network uplink signal quality parameter and the LTE network downlink signal quality parameter jointly determine whether the LTE network signal quality of the terminal can satisfy the VOLTE service situation.
  • the terminal may measure the downlink signal quality of the LTE network to obtain the downlink signal quality parameter of the LTE network of the terminal. That is, after the terminal receives the user instruction indicating that the VOLTE service is established, the LTE network downlink signal quality parameter of the terminal may be acquired in real time, and the LTE network downlink signal quality parameter may be obtained according to the real-time acquisition of the terminal. Whether the LTE network signal quality of the terminal can satisfy the VOLTE service.
  • the terminal obtains the LTE network uplink signal quality parameter of the terminal from the access network device. That is, after receiving the user instruction indicating that the VOLTE service is established, the terminal may obtain the LTE network uplink signal quality parameter of the terminal from the access network device in a real-time manner, and may determine the LTE network uplink signal quality parameter according to the obtained LTE network uplink signal quality parameter. Whether the signal quality of the terminal can satisfy the VOLTE service.
  • the method before the circuit switched domain calls the called terminal of the VOLTE service, the method further includes: determining, by the terminal, that the terminal is registered to the circuit Exchange domain.
  • the method before the circuit switched domain calls the called terminal of the VOLTE service, the method further includes: when the terminal is not registered to the circuit switched domain The terminal is registered in the circuit switched domain.
  • the registering in the circuit switched domain of the terminal includes: the terminal is registered in a circuit switched domain by means of a joint attach, or the terminal is camped through a reselection process.
  • the circuit switched domain is registered in the circuit switched domain.
  • the access network device may be a called terminal that calls the VOLTE service in the circuit switched domain if it is determined that the terminal has been registered to the circuit switched domain, and when the access network device is If it is determined that the terminal has not been registered to the circuit switched domain, the terminal may not call the called terminal of the VOLTE service in the circuit switched domain.
  • the method before the circuit switched domain calls the called terminal of the VOLTE service, the method further includes: determining, by the terminal, the network signal quality of the circuit switched domain Meet the voice business. That is, the access network device may be a called terminal that calls the VOLTE service in a circuit switched domain if the network signal quality of the circuit switched domain satisfies a voice service, and when the access network When the device determines that the network signal quality of the circuit switched domain cannot satisfy the voice service, the terminal may not call the called terminal of the VOLTE service in the circuit switched domain.
  • the method may further include: the terminal receiving a notification message from the long term evolution network; the notification message carrying a long term evolution network uplink signal quality parameter and/or a long term evolution network downlink signal quality parameter of the terminal, where The notification message is used by the terminal to determine that the long term evolution network signal quality of the terminal cannot satisfy the VOLTE service.
  • the notification message is from an access network device of the long term evolution network.
  • FIG. 4 is a schematic flowchart diagram of another service processing method according to another embodiment of the present invention.
  • another service processing method provided by another embodiment of the present invention may include:
  • the calling UE initiates establishment of a VOLTE service by sending an invite message.
  • the calling party P-CSCF receives an invite message from the calling UE, and the received invite message triggers the calling party P-CSCF to establish an IMS calling session for the calling UE.
  • the calling party P-CSCF sends the invite message to subsequent IMS nodes (eg, IMS nodes such as S-CSCF and SCCAS).
  • the subsequent IMS node starts to process the received invite message, and the called UE may receive the invite message forwarded by the network side.
  • the calling party P-CSCF may forward the 183 response message to the calling UE.
  • the calling party P-CSCF sends an authentication authorization request to the PCRF to trigger the exclusive use of the VOLTE service.
  • the establishment of the bearer of course, the calling party P-CSCF can also trigger the establishment of the dedicated bearer of the VOLTE service without waiting for the 183 response message, that is, the calling party P-CSCF triggers the exclusive bearer of the VOLTE service upon receiving the invite message. Establish a process.
  • the Authorization Authorization Request may carry the user identifier of the calling UE, the IMS application layer charging identifier, and the media description information.
  • the media description information may include at least one of the following information: a classifier identifier, bandwidth requirement description information, media type description information, and QoS parameters.
  • the PCRF receives the AAR.
  • the PCRF may send a Re-authentication Request (RAR) carrying a QoS rule to the PGW according to the media description information carried by the AAR, so as to trigger the PGW to establish a user plane data-specific bearer of the VOLTE service.
  • RAR Re-authentication Request
  • QCI service quality level identifier
  • QoS rules include QoS key parameters
  • QoS key parameters may include Guaranteed Bit Rate (GBR), Allocation/Retention Priority (ARP), Quality of Service Level Identifier (QCI), and/or Maximum Bit Rate (MBR).
  • GBR Guaranteed Bit Rate
  • ARP Allocation/Retention Priority
  • QCI Quality of Service Level Identifier
  • MRR Maximum Bit Rate
  • the PGW receives the RAR message from the PCRF, and the PGW sends a Re-authentication Answer (RAA) message to the PCRF for responding to the RAR request.
  • RAA Re-authentication Answer
  • the PCRF entity receives the RAA message from the PGW, and the PCRF sends an AAA (Authentication Authorization Answer) message to the calling party P-CSCF after receiving the RAA message.
  • AAA Authentication Authorization Answer
  • the SGW receives a create bearer request message from the PGW, and the SGW sends a create bearer request message to the MME according to the received create bearer request message.
  • the LTE network uplink signal quality parameter of the calling UE includes: an LTE network uplink signal strength of the calling UE, an LTE network uplink signal SNR of the calling UE, and/or the calling The uplink loss rate of the LTE network of the UE, and the like.
  • the downlink signal quality parameter of the LTE network of the calling UE includes: an LTE network downlink signal strength of the calling UE, an LTE network downlink signal SNR of the calling UE, and/or the calling The downlink loss rate of the LTE network of the UE, and the like.
  • the eNB may send a measurement control instruction to the calling UE, and receive a measurement report sent by the calling UE in response to the measurement control instruction, where the measurement report carries The downlink signal quality parameter of the LTE network of the calling UE.
  • the eNB may reject the bearer setup request message, and the eNB may reply to the MME with a bearer setup response message.
  • the cause value may be: Radio resources not available, Failure in the Radio Interface Procedure, or Not supported QCI value.
  • the cause value may also be a standard undefined cause value, which is not limited herein.
  • the eNB may further determine that the 2G/3G network signal quality of the calling UE of the VOLTE service satisfies the voice service. For example, the eNB sends a second measurement control instruction to the calling UE, where the second measurement control instruction is used to indicate that the calling UE measures 2G/3G network signal quality; and the eNB receives the calling UE response second measurement.
  • the second measurement report sent by the control command where the second measurement report carries the downlink signal quality parameter of the 2G/3G network of the calling UE.
  • the eNB determines whether the current LTE network signal quality of the calling UE can be voice service, for example based on the second measurement report.
  • the eNB may further determine that the terminal of the VOLTE service is registered in the circuit switched domain. For example, the eNB may receive a notification message from the MME before rejecting the bearer setup request message, and the notification message carries indication information indicating that the calling UE has registered to the circuit switched domain.
  • the notification message may be specifically a downlink DOWNLINK NAS TRANSPORT, an INITIAL CONTEXT SETUP REQUEST, and a UE CONTEXT MODIFICATION REQUEST.
  • the bearer setup request message sent by the eNB is used to indicate that the terminal has registered to the circuit switched domain indication information.
  • the MME sends a create bearer response message to the SGW.
  • the bearer setup response message carries the cause value of the bearer establishment rejection, and the cause value carried by the MME may be set by referring to the cause value acquired from the eNB.
  • the SGW receives a create bearer response message from the MME, and the SGW sends a create bearer response message to the PGW according to the received create bearer response message.
  • CCR Clear Control Request
  • the PCRF entity sends a CCA (Credit Control Answer) message to the PGW.
  • CCA Clear Control Answer
  • the PCRF entity sends a re-authentication request (RAR, according to the CCR message to the calling party P-CSCF, Re-authentication Request (ASR) message, the RAR message/ASR message may carry indication information indicating that the bearer resource is insufficient or indication information indicating that the resource allocation fails.
  • RAR re-authentication request
  • ASR Re-authentication Request
  • the calling party P-CSCF sends a RAA (Re-authentication Answer) message/Abortion-Session-Answer message to the PCRF entity.
  • RAA Re-authentication Answer
  • the calling party P-CSCF After receiving the indication information that the bearer resource is insufficient or the indication information of the resource allocation failure, the calling party P-CSCF sends a 380 response message or a 503 response message to the calling UE.
  • the P-CSCF may send different response messages according to whether the calling UE is a roaming user, for example, sending 380 messages for the A operator and 503 messages for the B operator.
  • the P-CSCF determines the VoLTE user after the P-CSCF obtains the indication information indicating that the bearer resource is insufficient or the resource allocation fails. For a roaming user, the P-CSFB may send the first response message.
  • the P-CSCF determines that the VoLTE user is a roaming user, and the P-CSCF may send a first response message according to the PLMN to which the roaming user belongs.
  • the P-CSCF uniformly sends a second response message to all roaming users. If the P-CSCF determines that the VoLTE user is a non-roaming user, the P-CSCF sends a third response message according to the configuration.
  • the VoLTE call fails, and the IMS network instructs the UE to initiate a call in the 2/3G circuit domain according to different reasons or to stay in the LTE network or the WiFi network to initiate a VoWiFi call or continue to initiate a call on the LTE network.
  • the P-CSCF After the P-CSCF obtains the indication information indicating that the resource is insufficient or the resource allocation fails, the P-CSCF sends a third response message to instruct the UE to initiate a call in the 2/3G circuit domain.
  • the P-CSCF After the P-CSCF obtains the indication information of the insufficient bearer resource or the indication of the resource allocation failure, the P-CSCF sends a fourth response message, instructing the UE to initiate VoWiFi on the WiFi network. call.
  • the congestion of the P-CSCF causes the VoLTE call to fail, and the P-CSCF sends a fifth response message instructing the UE to continue to initiate a call on the LTE network.
  • the fifth response message instructs the UE to initiate a call using a different P-CSCF.
  • the calling party P-CSCF may send a cancel message to the calling party S-CSCF and the like to cancel the already requested VOLTE service related call.
  • the calling party P-CSCF may send a cancel message to the called UE without using the device such as the calling party S-CSCF.
  • the calling UE may re-call the domain selection and initiate a CSFB call.
  • the UE side and the network side cooperate to perform the CSFB process, and finally a voice call may be established in the CS domain.
  • the bearer setup request may also be accepted to successfully establish a VOLTE call.
  • the CSFB call can be used in the calling voice session establishment phase.
  • VOLTE service calls avoid technical problems such as call loss, poor session quality, or large call setup delay caused by efforts to establish VOLTE service calls.
  • FIG. 5 is a flow of another service processing method according to another embodiment of the present invention. Schematic diagram. As shown in FIG. 5, another service processing method provided by another embodiment of the present invention may include:
  • the called party P-CSCF receives the invite message sent by the called party S-CSCF, and the received invite message may trigger the called party P-CSCF to establish an IMS called session for the called UE.
  • the called party P-CSCF continues to send the invite message to the called UE.
  • the called UE After receiving the invite message, the called UE replies with a 183 response message to the called party P-CSCF.
  • the called party P-CSCF receives the 183 response message, the called party P-CSCF sends a 183 response message to the called party S-CSCF, and the called party S-CSCF can further send 183 to the calling party S-CSCF.
  • the calling party S-CSCF further sends a 183 response message to the calling party P-CSCF, and if the calling party P-CSCF receives the 183 response message sent by the calling party S-CSCF, the calling party P-CSCF can The 183 response message is forwarded to the calling UE.
  • the called party P-CSCF sends an authentication authorization request to the PCRF to trigger establishment of a dedicated bearer of the VOLTE service.
  • the called party P-CSCF may also trigger the establishment of the dedicated bearer of the VOLTE service without waiting for the 183 response message, that is, the called party P-CSCF triggers the exclusive bearer of the VOLTE service upon receiving the invite message. Establish a process.
  • the Authorization Authorization Request may carry the user identifier of the called UE, the IMS application layer charging identifier, and the media description information.
  • the media description information may include at least one of the following information: a classifier identifier, bandwidth requirement description information, media type description information, and QoS parameters.
  • the PCRF receives the AAR.
  • the PCRF sends a Re-authentication Request (RAR) carrying the QoS rules to the PGW according to the media description information carried by the AAR to trigger the PGW to establish a user plane data-specific bearer of the VOLTE service.
  • RAR Re-authentication Request
  • QoS rules include QoS key parameters
  • QoS key parameters may include Guaranteed Bit Rate (GBR), Allocation/Retention Priority (ARP), Quality of Service Level Identifier (QCI), and/or Maximum Bit Rate (MBR).
  • GBR Guaranteed Bit Rate
  • ARP Allocation/Retention Priority
  • QCI Quality of Service Level Identifier
  • MRR Maximum Bit Rate
  • the PGW receives the RAR message from the PCRF, and the PGW sends the response to the RAR for responding to the RAR.
  • Requested Re-authentication Answer (RAA) message is provided.
  • the PCRF entity receives the RAA message from the PGW, and the PCRF sends an AAA (Authentication Authorization Answer) message to the called party P-CSCF after receiving the RAA message.
  • AAA Authentication Authorization Answer
  • the SGW receives the create bearer request message from the PGW, and the SGW sends a create bearer request message to the MME according to the received create bearer request message.
  • the LTE network uplink signal quality parameter of the called UE includes: an LTE network uplink signal strength of the called UE, an LTE network uplink signal signal to noise ratio of the called UE, and/or the called party The uplink loss rate of the LTE network of the UE, and the like.
  • the downlink signal quality parameter of the LTE network of the called UE includes: an LTE network downlink signal strength of the called UE, an LTE network downlink signal signal to noise ratio of the called UE, and/or the called The downlink loss rate of the LTE network of the UE, and the like.
  • the eNB may send a measurement control instruction to the called UE, and receive the measurement sent by the called UE in response to the measurement control instruction.
  • the quantity report reports that the measurement report carries the LTE network downlink signal quality parameter of the called UE.
  • the eNB may reject the bearer setup request message, and the eNB may reply to the MME with a bearer setup response message.
  • the cause value may be: Radio resources not available, Failure in the Radio Interface Procedure, or Not supported QCI value.
  • the cause value may also be a standard undefined cause value, which is not limited herein.
  • the eNB may further determine that the 2G/3G network signal quality of the called UE of the VOLTE service satisfies the voice service. For example, the eNB sends a second measurement control instruction to the called UE, where the second measurement control instruction is used to indicate that the called UE measures 2G/3G network signal quality; and the eNB receives the called UE to respond to the second measurement.
  • the second measurement report sent by the control command, and the second measurement report carries the downlink signal quality parameter of the 2G/3G network of the called UE.
  • the eNB determines whether the current LTE network signal quality of the called UE can be voice service, for example, based on the second measurement report.
  • the eNB may further determine that the terminal of the VOLTE service is registered in the circuit switched domain. For example, before the eNB rejects the bearer setup request message, it may receive a notification message from the MME, where the notification message carries indication information indicating that the called UE has registered to the circuit switched domain.
  • the notification message may be specifically a downlink DOWNLINK NAS TRANSPORT, an INITIAL CONTEXT SETUP REQUEST, and a UE CONTEXT MODIFICATION REQUEST.
  • the bearer setup request message sent by the eNB is used to indicate that the terminal has registered to the circuit switched domain indication information.
  • the MME sends a create bearer response message to the SGW.
  • the bearer setup response message carries the cause value of the bearer establishment rejection, and the cause value carried by the MME may be set by referring to the cause value acquired from the eNB.
  • the SGW receives a create bearer response message from the MME, and the SGW sends a create bearer response message to the PGW according to the received create bearer response message.
  • CCR Clear Control Request
  • the PCRF entity sends a CCA (Credit Control Answer) message to the PGW.
  • CCA Clear Control Answer
  • the PCRF entity sends an RAR message/Abort-Session-Request (ASR) message to the called party P-CSCF according to the CCR message, where the RAR message/ASR message may be carried to indicate the bearer. Indication of insufficient resources or indication information indicating that resource allocation has failed.
  • ASR Abort-Session-Request
  • the called party P-CSCF sends an RAA message/ASA message to the PCRF entity.
  • the called party S-CSCF After the called party P-CSCF obtains the indication information of the insufficient bearer resource or the indication information of the resource allocation failure, the called party S-CSCF sends a 380 or 503 response message to the called domain selection device in the IMS network.
  • Step S518 After receiving the indication information that the bearer resource is insufficient or the resource allocation failure indication information, the called party P-CSCF sends a cancel message to the called UE to cancel the VOLTE service related session that has been requested.
  • Step S518 and step S519 do not define a sequential relationship.
  • the called domain selection device of the IMS network re-selects the called session to the CS domain, and initiates a call to the CS domain call control device (such as the MSC) via the called party S-CSCF.
  • the CS domain call control device such as the MSC
  • the CS domain call control device (such as the MSC) initiates a call to the MME via the SGs interface.
  • the MME triggers the CSFB process of the called UE.
  • the called UE may eventually establish a voice session in the CS domain.
  • the CSFB call can be used instead of the VOLTE service call in the called voice session establishment phase to avoid call loss caused by trying to establish a VOLTE service call.
  • Technical problems such as poor session quality or call setup time delay.
  • FIG. 6 is a schematic flowchart diagram of another service processing method according to another embodiment of the present invention.
  • Another service processing method provided by another embodiment of the present invention may include:
  • the called party P-CSCF After receiving the invite message, the called party P-CSCF establishes an IMS called session, and sends the invite message to the called UE.
  • the called UE receives an invite message.
  • the called UE may determine, according to the signal quality parameter of the long-term evolution network of the called UE, that the signal quality of the current long-term evolution network of the called UE cannot meet the signal quality condition of the bearer for the VOLTE service, where
  • the signal quality parameter of the long-term evolution network of the called UE includes: a long-term evolution network uplink signal quality parameter of the called UE and/or a long-term evolution network downlink signal quality parameter of the called UE.
  • the long-term evolution network uplink signal quality parameter of the called UE includes: a long-term evolution network uplink signal strength of the called UE, a long-term evolution network uplink signal-to-noise ratio of the called UE, and/or a location The long-term evolution network uplink packet loss rate of the called UE.
  • the long-term evolution network downlink signal quality parameter of the called UE includes: a long-term evolution network downlink signal strength of the called UE, a long-term evolution network downlink signal-to-noise ratio of the called UE, and/or a location The downlink packet loss rate of the long-term evolution network of the called UE.
  • the called UE may measure the downlink signal quality of the long term evolution network to obtain a long term evolution network downlink signal quality parameter of the called UE.
  • the called P-CSCF replies with a 480 response message, where the 480 response message is used to indicate that the current VOLTE service is unavailable.
  • the called P-CSCF After receiving the 480 response message, the called P-CSCF sends a 480 response message to the IMS domain selection service device via the S-CSCF.
  • the IMS domain selection service device initiates a call to a CS domain call control device (such as an MSC) via a device such as the S-CSCF.
  • a CS domain call control device such as an MSC
  • the CS domain call control device (such as the MSC) initiates a call to the MME via the SGs interface.
  • the MME triggers the CSFB process of the called UE.
  • the called UE may eventually establish a voice session in the CS domain.
  • the called UE after the called UE receives the call request message of the VOLTE service from the IMS network, if it is determined that the signal quality of the called UE cannot satisfy the VOLTE service, the Calling the UE to reject the call request message, that is, in the bearer establishment process of the VOLTE service, if the called UE finds that its own signal quality cannot satisfy the VOLTE service, the called UE will block the
  • the bearer establishment of the VOLTE service is beneficial to improving the stability of the created VOLTE service to a certain extent, thereby improving the user's calling experience. For example, there are still many weak coverage areas of LTE networks. It is impossible for operators to achieve good signal quality in LTE networks in each area.
  • the coverage of cell edges in general LTE networks is usually weak, and the scheme of this embodiment is adopted. Due to the weak coverage of the cell edge of the LTE network, the called UE may not be able to initiate the establishment of the VOLTE service in these areas, and the called UE is forced to establish the CS domain call service by other means, which is beneficial to improve the successful establishment. The stability of the call service.
  • an embodiment of the present invention provides an access network device 700, which may include:
  • the receiving unit 710 is configured to receive a bearer setup request message of the VOLTE service from the core network device.
  • the service control unit 720 is configured to reject the bearer setup request message if the LTE network signal quality of the terminal of the VOLTE service cannot be determined to satisfy the VOLTE service.
  • the service control unit 720 is specifically configured to: if it is determined that the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service, to the core network The device sends a response message rejecting the bearer setup request message, where the response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call.
  • the response message carries a cause value of a bearer establishment failure of the VOLTE service.
  • the service control unit is specifically configured to: if it is determined that the LTE network signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service, to the mobility management network element MME Sending a response message of the bearer setup request message, the response message causing the Internet Protocol Multimedia Subsystem IMS to trigger the terminal to initiate a circuit domain fallback call.
  • the access network device determines the LTE of the terminal based on an LTE network uplink signal quality parameter of the terminal of the VOLTE service and/or an LTE network downlink signal quality parameter.
  • the network signal quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink loss rate of the LTE network of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the access network device 700 further includes:
  • a sending unit configured to send a first measurement control instruction to the terminal after receiving the bearer setup request message of the VOLTE service from the core network device, where the receiving unit 710 is further configured to receive the terminal response And a first measurement report sent by the first measurement control instruction, where the first measurement report carries an LTE network downlink signal quality parameter of the terminal.
  • the terminal is a calling terminal or a called terminal of the VOLTE service.
  • the service control unit is further configured to determine that the terminal is registered to the circuit switched domain before rejecting the bearer setup request message.
  • the receiving unit is further configured to receive a notification message from the core network device, where the notification message is used to indicate that the terminal is registered to a circuit switched domain.
  • the indication information wherein the service control unit determines that the terminal has registered to the circuit switched domain based on the notification message.
  • the service control unit is further configured to: after receiving the bearer setup request message of the VOLTE service from the core network device, determine, before rejecting the bearer setup request message, The 2G/3G network signal quality of the terminal satisfies the voice service.
  • the access network device further includes: a sending unit, configured to send, to the terminal, a bearer setup request message after receiving a VOLTE service from the core network device a second measurement control instruction, the second measurement control instruction is used to instruct the terminal to measure a 2G/3G network signal quality, and the receiving unit is configured to receive a second measurement report sent by the terminal in response to the second measurement control instruction, The second measurement report carries a downlink signal quality parameter of the 2G/3G network of the terminal.
  • an embodiment of the present invention further provides a terminal 800, which may include:
  • the receiving unit 810 is configured to receive a call request message of a VOLTE service from an Internet Protocol Multimedia Subsystem (IMS) network;
  • IMS Internet Protocol Multimedia Subsystem
  • the service control unit 820 is configured to reject the call request message if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the rejecting the call request message includes: the terminal sending, to the IMS network, a response message for rejecting the call request message, where the response message is used by the IMS network to trigger the terminal to initiate a circuit domain fallback call.
  • the terminal determines, according to the LTE network uplink signal quality parameter of the terminal, and/or an LTE network downlink signal quality parameter, that the LTE network signal quality of the terminal cannot meet the Said VOLTE business.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink loss rate of the LTE network of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the call request message is an invite invite message.
  • the response message is a temporary invalidation response message (eg, 480 message).
  • the functions of the function modules of the terminal 800 may be specifically implemented according to the method in the foregoing method embodiment.
  • the specific implementation process refer to the related description of the foregoing method embodiment, where No longer.
  • an embodiment of the present invention further provides a terminal 900, including:
  • the receiving unit 910 is configured to receive a user instruction that is used to establish a VOLTE service.
  • the service control unit 920 is configured to: when it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service, call the called terminal of the VOLTE service in a circuit switched domain.
  • the service control unit 920 determines an LTE network signal quality of the terminal based on an LTE network uplink signal quality parameter and/or an LTE network uplink signal quality parameter of the terminal.
  • the VOLTE service cannot be satisfied.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink loss rate of the LTE network of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the terminal further includes:
  • the measuring unit is configured to measure the downlink signal quality of the LTE network after receiving the user instruction indicating that the VOLTE service is established, to obtain the downlink signal quality parameter of the LTE network of the terminal.
  • the service control unit 920 is further configured to determine that the terminal is registered to the circuit switched domain before the circuit switched domain calls the called terminal of the VOLTE service.
  • the service control unit 920 is further configured to: before the circuit switched domain calls the called terminal of the VOLTE service, when the terminal is not registered to the circuit switched domain, Circuit switched domain registration.
  • the service control unit 920 registering in the circuit switched domain includes: registering in the circuit switched domain by means of joint attach, or camping in the circuit switched domain through the reselection process and The circuit switched domain registration.
  • the service control unit 920 is further configured to determine, before the circuit switched domain calls the called terminal of the VOLTE service, that the network signal quality of the circuit switched domain satisfies a voice service. .
  • the receiving unit receives a notification message from the long term evolution network before the service control unit 920 calls the called terminal of the VOLTE service in the circuit switched domain;
  • the notification message carries the long term evolution network uplink signal quality parameter and/or the long term evolution network downlink signal quality parameter of the terminal, where the notification message is used by the terminal 900 to determine that the long term evolution network signal quality of the terminal cannot meet the The VOLTE service.
  • the notification message is from an access network device of the long term evolution network.
  • the functions of the functional modules of the terminal 900 may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, where No longer.
  • an embodiment of the present invention further provides an access network device 1000, which may include: Port 1010, processor 1020, memory 1040, and the like.
  • the memory 1040 can include read only memory and random access memory and provides instructions and data to the processor 1020. Additionally, a portion of the memory 1040 can also include a non-volatile random access memory.
  • the processor 1020 mainly controls the operation of the access network device 1000.
  • the processor 1020 may also be referred to as a central processing unit (CPU).
  • Memory 1040 can include read only memory and random access memory and provides instructions and data to processor 1020.
  • a portion of the memory 1040 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the components of the access network device 1000 are coupled together by a bus system 1050.
  • the bus system 1050 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1050 in the figure.
  • Processor 1020 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1020 or an instruction in a form of software.
  • the processor 1020 may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Discrete hardware components Discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1040.
  • the processor 1020 can read the information in the memory 1040 and complete the steps of the foregoing method in combination with hardware.
  • the network interface 1010 is configured to receive a bearer setup request message of the VOLTE service from the core network device.
  • the processor 1020 is configured to reject the bearer setup request message if the LTE network signal quality of the terminal of the VOLTE service cannot be determined to satisfy the VOLTE service.
  • the processor is specifically configured to: if the LTE network signal quality of the terminal of the VOLTE service is determined to be incapable of satisfying the VOLTE service, The core network device sends a response message rejecting the bearer setup request message, where the response message is used by the core network device to trigger the terminal to initiate a circuit domain fallback call.
  • the response message carries a cause value of a bearer establishment failure of the VOLTE service.
  • the processor is specifically configured to: if the LTE network signal quality of the terminal of the VOLTE service is determined to be incapable of satisfying the VOLTE service, move to the mobile interface
  • the management network element MME sends a response message of the bearer setup request message, and the response message causes the Internet Protocol Multimedia Subsystem IMS to trigger the terminal to initiate a circuit domain fallback call.
  • the processor determines an LTE network signal of the terminal based on an LTE network uplink signal quality parameter of the terminal of the VOLTE service and/or an LTE network downlink signal quality parameter. The quality cannot satisfy the VOLTE service.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink loss rate of the LTE network of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the processor 1020 is further configured to send, by using the network interface, the terminal, after receiving a bearer setup request message of a VOLTE service from a core network device. a first control report that is sent by the terminal in response to the first measurement control instruction by using the network interface, where the first measurement report carries an LTE network downlink signal quality parameter of the terminal.
  • the terminal is a calling terminal or a called terminal of the VOLTE service.
  • the processor is further configured to determine that the terminal is registered to the circuit switched domain before rejecting the bearer setup request message.
  • the network interface is further configured to receive a notification message from the core network device, where the notification message is used to indicate that the terminal is registered to a circuit switched domain.
  • the indication information wherein the processor determines that the terminal has registered to the circuit switched domain based on the notification message.
  • the processor is further configured to: after receiving the bearer setup request message of the VOLTE service from the core network device, determine, before rejecting the bearer setup request message, The 2G/3G network signal quality of the terminal satisfies the voice service.
  • the network interface is further configured to send a second measurement control instruction to the terminal after receiving a bearer setup request message of the VOLTE service from the core network device, where The second measurement control instruction is used to instruct the terminal to measure a 2G/3G network signal quality; and receive a second measurement report sent by the terminal in response to the second measurement control instruction, where the second measurement report carries The downlink signal quality parameters of the 2G/3G network of the terminal.
  • an embodiment of the present invention further provides a terminal 1100, which may include a receiver 1110, a transmitter 1130 (optional), a processor 1120, a memory 1140, and the like.
  • the memory 1140 can include read only memory and random access memory and provides instructions and data to the processor 1120. Additionally, a portion of the memory 1140 can also include a non-volatile random access memory.
  • the processor 1120 mainly controls the operation of the access network device 1100.
  • the processor 1120 may also be referred to as a central processing unit (CPU).
  • Memory 1140 can include read only memory and random access memory and provides instructions and data to processor 1120.
  • a portion of the memory 1140 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the various components of the terminal 1100 are coupled together by a bus system 1150, wherein the bus system 1150 includes a data bus.
  • the bus system 1150 can also include a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 1150 in the figure.
  • the method disclosed in the foregoing embodiments of the present invention may be applied to the processor 1120 or implemented by the processor 1120.
  • the processor 1120 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1120 or an instruction in a form of software.
  • the processor 1120 may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or a transistor logic device.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Discrete hardware components The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1140.
  • the processor 1120 can read the information in the memory 1140 and complete the steps of the foregoing method in combination with hardware.
  • the receiver 1110 is configured to receive a call request message of a VOLTE service from an IMS network.
  • the processor 1120 is configured to reject the call request message if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the terminal 1100 further includes a transmitter 1130, where the processor 1120 is specifically configured to send, by using the transmitter 1130, the IMS network for rejecting the And a response message for the call request message, where the response message is used by the IMS network to trigger the terminal to initiate a circuit domain fallback call.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink loss rate of the LTE network of the terminal.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the call request message is an invite invite message.
  • the response message is a temporary invalidation response message.
  • the functions of the functional modules of the terminal 1100 may be specifically implemented according to the method in the foregoing method embodiment.
  • the specific implementation process refer to the related description of the foregoing method embodiment, where Let me repeat.
  • an embodiment of the present invention further provides a terminal 1200, which may include:
  • Network interface 1210 user interface 1230, processor 1220, memory 1240, and the like.
  • User interface 1230 can be, for example, a mouse, button, touch screen, or the like.
  • the memory 1240 can include read only memory and random access memory and provides instructions and data to the processor 1220. Additionally, a portion of the memory 1240 can also include a non-volatile random access memory.
  • the processor 1220 mainly controls the operation of the access network device 1200.
  • the processor 1220 may also be referred to as a central processing unit (CPU).
  • Memory 1240 can include read only memory and random access memory and provides instructions and data to processor 1220.
  • a portion of the memory 1240 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the components of the terminal 1200 are coupled together by a bus system 1250.
  • the bus system 1250 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1250 in the figure.
  • Processor 1220 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1220 or an instruction in the form of software.
  • the processor 1220 may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA off-the-shelf programmable gate array
  • Other programmable logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1240.
  • the processor 1220 can read the information in the memory 1240 and complete the steps of the foregoing method in combination with hardware.
  • the user interface 1230 is configured to receive a user instruction that is used to establish a VOLTE service.
  • the processor 1220 is configured to initiate a call to the called terminal of the VOLTE service in the circuit switched domain (through the network interface 1210) if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the processor 1220 is configured to first initiate a CSFB process (through the network interface 1210) to fall back to the circuit switched domain, and then (through the network), if it is determined that the LTE network signal quality of the terminal cannot satisfy the VOLTE service.
  • the interface 1210) initiates a called terminal that calls the VOLTE service in the circuit switched domain.
  • the LTE network uplink signal quality parameter of the terminal includes: an LTE network uplink signal strength of the terminal, and an LTE network uplink signal SNR of the terminal, where At least one of the uplink packet loss ratios of the terminals.
  • the LTE network downlink signal quality parameter of the terminal includes: an LTE network downlink signal strength of the terminal, and a downlink signal to noise ratio of the LTE network of the terminal, where At least one of a downlink packet loss rate of the LTE network of the terminal.
  • the processor 1220 is further configured to: after receiving the user instruction that is used to establish the VOLTE service, measure the downlink signal quality of the LTE network, to obtain the downlink signal of the LTE network of the terminal 1200. Quality parameters.
  • the processor is further configured to determine that the terminal is registered to the circuit switched domain before the circuit switched domain calls the called terminal of the VOLTE service.
  • the processor is further configured to: before the circuit switched domain calls the called terminal of the VOLTE service, the terminal is not registered to the circuit switched domain. In the case of registration in the circuit switched domain.
  • the registering in the circuit switched domain of the terminal includes: the terminal is registered in a circuit switched domain by means of a joint attach, or the terminal is camped on the circuit by a reselection process.
  • the domain is switched and registered in the circuit switched domain.
  • the processor is further configured to determine that a network signal quality of the circuit switched domain satisfies a voice before the circuit switched domain calls the called terminal of the VOLTE service. business.
  • the terminal further includes a network interface, where the network interface is used by the processor before calling the called terminal of the VOLTE service in a circuit switched domain Receiving a notification message from the long term evolution network, where the notification message carries a long term evolution network uplink signal quality parameter and/or a long term evolution network downlink signal quality parameter of the terminal, where the notification message is used by the processor The determining that the long-term evolution network signal quality of the terminal cannot satisfy the VOLTE service.
  • the notification message is from an access network device of the long term evolution network.
  • the functions of the function modules of the terminal 1200 may be specifically implemented according to the method in the foregoing method embodiment.
  • the specific implementation process refer to the related description of the foregoing method embodiment, where Let me repeat.
  • an embodiment of the present invention further provides a communication system, including:
  • the core network device 1310 and the access network device 1320, wherein the access network device 1320 can be any one of the access network devices provided by the embodiments of the present invention.
  • an embodiment of the present invention provides a core network device 1400, including:
  • Network interface 1410 memory 1440, and processor 1420.
  • the memory 1440 can include read only memory and random access memory and provides instructions and data to the processor 1420. Additionally, a portion of the memory 1440 can also include a non-volatile random access memory.
  • the processor 1420 mainly controls the operation of the access network device 1400.
  • the processor 1420 may also be referred to as a central processing unit (CPU).
  • Memory 1440 can include read only memory and random access memory and provides instructions and data to processor 1420.
  • a portion of memory 1440 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the components of the core network device 1400 are coupled together by a bus system 1450.
  • the bus system 1450 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 1450 in the figure.
  • the processor 1420 can be used, for example, to generate a notification message.
  • the network interface 1410 is configured to send a bearer setup request message of the VOLTE service to the access network device, and send a notification message to the access network device, where the notification message carries a terminal that is used to indicate the VOLTE service. Instructing information registered to the circuit switched domain; wherein the notification message is used by the access network device to reject the bearer setup request if it is determined that the signal quality of the terminal of the VOLTE service cannot satisfy the VOLTE service Before the message, it is determined that the terminal has been registered to the circuit switched domain.
  • the core network device may be, for example, an MME, and the access network device may be, for example, an eNB.
  • the disclosed apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative, such as the above single
  • the division of elements is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described above as separate components may or may not be physically separated.
  • the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may 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 above-described integrated unit if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, server or network device, etc., and in particular a processor in a computer device) to perform all or part of the steps of the above-described methods of various embodiments of the present invention.
  • the foregoing storage medium may include: a U disk, a mobile hard disk, a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), and the like. The medium of the code.

Landscapes

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

Abstract

业务处理方法、业务处理装置和通信系统。一种业务处理方法包括：接入网设备接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息；所述接入网设备若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。本发明实施例提供的技术方案有利于提高创建起来的VOLTE业务的稳定性，进而有利于提升用户的通话体验。

Description

业务处理方法、业务处理装置和通信系统 技术领域
本发明涉及了通信技术领域，具体涉及了业务处理方法、业务处理装置以及通信系统。
背景技术
长期演进(LTE，Long Term Evolution)网络的语音业务被称为基于LTE的语音(VOLTE，Voice over LTE)业务，目前越来越多的运营商开始商用VOLTE，且越来越多的用户终端能够支持VOLTE业务。VOLTE业务的媒体数据在LTE网络中承载于用户面专有承载(目前标准上定义使用业务质量等级标识＝1的专有承载)。一般的来说，VOLTE业务对LTE网络性能的要求是要高于数据业务的。
本发明的发明人在研究和实践过程中发现，现有机制在VOLTE业务建立过程中主要参考的是小区的资源是否足够，当整个小区还有能满足VOLTE的资源的情况下就会尽力建立起VOLTE业务的专有承载。然而在某些场景下基于现有机制建立起的VOLTE业务的稳定性不佳，有时候会严重影响到用户的通话体验。
发明内容
本发明实施例提供业务处理方法和相关装置以及通信系统，以期能够提高创建起来的VOLTE业务的稳定性，进而提升用户的通话体验。
本发明实施例第一方面提供一种业务处理方法，包括：
接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息；
所述接入网设备若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
结合第一方面，在第一方面的第一种可能的实施方式中，所述拒绝所述承载建立请求消息包括：向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，其中，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
结合第一方面的第一种可能的实施方式，在第一方面的第二种可能的实施方式中，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
结合第一方面的第一种可能的实施方式或第一方面的第二种可能的实施方式，在第一方面的第三种可能的实施方式中，所述向所述核心网设备发送拒绝所述承载建立请求消息的响应消息包括：向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
结合第一方面或第一方面的第一种可能的实施方式或第一方面的第二种可能的实施方式或第一方面的第三种可能的实施方式，在第一方面的第四种可能的实施方式中，所述接入网设备基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第一方面的第四种可能的实施方式，在第一方面的第五种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第一方面的第四种可能的实施方式或第一方面的第五种可能的实施方式，在第一方面的第六种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的下行丢包率中的至少一种。
结合第一方面的第四种可能的实施方式或第一方面的第五种可能的实施方式或第一方面的第六种可能的实施方式，在第一方面的第七种可能的实施方式中，所述接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，所述方法还包括：
所述接入网设备向所述终端发送第一测量控制指令；所述接入网设备接收所述终端响应所述第一测量控制指令而发送的第一测量报告，其中，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。其中，所述第一测量控制指令可用于指示所述终端测量LTE网络信号质量。
结合第一方面或第一方面的第一种至第七种可能的实施方式中的任意一种可能的实施方式，在第一方面的第八种可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。
结合第一方面或第一方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第一方面的第九种可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
结合第一方面或第一方面的第一种至第九种可能的实施方式中的任意一种可能的实施方式，在第一方面的第十种可能的实施方式中，在所述拒绝所述承载建立请求消息之前，所述方法还包括：所述接入网设备确定所述终端已注册到电路交换域。
结合第一方面的第十种可能的实施方式，在第一方面的第十一种可能的实施方式中，所述方法还包括：
所述接入网设备接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述接入网设备基于所述通知消息确定所述终端已注册到电路交换域。
结合第一方面的第十种可能的实施方式或第一方面的第十一种可能的实施方式，在第一方面的第十二种可能的实施方式中，所述接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在所述拒绝所述承载建立请求消息之前，所述方法还包括：所述接入网设备确定所述终端的2G/3G网络信号质量满足语音业务。
结合第一方面的第十二种可能的实施方式，在第一方面的第十三种可能的实施方式中，
所述接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，所述方法还包括：所述接入网设备向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；所述接入网设备接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
本发明实施例第二方面提供一种业务处理方法，包括：
终端接收来自互联网协议多媒体子系统IMS网络的VOLTE业务的呼叫请求消息；
所述终端若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
结合第二方面，在第二方面的第一种可能的实施方式中，
所述拒绝所述呼叫请求消息包括：所述终端向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
结合第二方面或第二方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述终端基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第二方面的第二种可能的实施方式，在第二方面的第三种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第二方面的第二种可能的实施方式或第二方面的第三种可能的实施方式，在第二方面的第四种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第二方面或第二方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第二方面的第五种可能的实施方式中，所述呼叫请求消息为邀请invite消息。
结合第二方面的第五种可能的实施方式，在第二方面的第六种可能的实施方式中，所述响应消息为临时失效响应消息。
本发明实施例第三方面提供一种业务处理方法，可包括：
终端接收指示建立VOLTE业务的用户指令；
所述终端若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端。
例如，所述电路交换域包括2G/3G网络的电路交换域和/或CDMA网络的1xRTT网络。
结合第三方面，在第三方面的第一种可能的实施方式中，所述终端基于所述终端的LTE网络上行信号质量参数和/或LTE网络上行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第三方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第三方面的第一种可能的实施方式或第三方面的第二种可能的实施方式，在第三方面的第三种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第三方面或第三方面的第一种至第三种可能的实施方式中的任意一种可能的实施方式，在第三方面的第四种可能的实施方式中，在接收指示建立VOLTE业务的用户指令之后，
所述方法还包括：所述终端对LTE网络下行信号质量进行测量，以得到所述终端的LTE网络下行信号质量参数。
结合第三方面或第三方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第三方面的第五种可能的实施方式中，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述终端已注册到电路交换域。
结合第三方面或第三方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第三方面的第六种可能的实施方式中，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：当所述终端还未注册到电路交换域，所述终端在电路交换域注册。
结合第三方面的第六种可能的实施方式，在第三方面的第七种可能的实施方式中，所述终端在电路交换域注册包括：所述终端通过联合附着方式在电路交换域注册，或者所述终端通过重选过程驻留到电路交换域并在所述电路交换域注册。
结合第三方面的第五种至第七种可能的实施方式中的任意一种可能的实施方式，在第三方面的第八种可能的实施方式中，在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述电路交换域的网络信号质量满足语音业务。
结合第三方面或第三方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第三方面的第九种可能的实施方式中，所述终端若确定所述终端的信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端接收来自所述长期演进网络的通知消息；所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述终端用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
结合第三方面的第九种可能的实施方式，在第三方面的第十种可能的实施方式中，所述通知消息来自所述长期演进网络的接入网设备。
本发明实施例第四方面提供一种接入网设备，包括：
接收单元，用于接收来自核心网设备的VOLTE业务的承载建立请求消息；
业务控制单元，用于若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
结合第四方面，在第四方面的第一种可能的实施方式中，所述业务控制单元具体用于：若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
结合第四方面的第一种可能的实施方式，在第四方面的第二种可能的实施方式中，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
结合第四方面的第一种可能的实施方式或第四方面的第二种可能的实施 方式，在第四方面的第三种可能的实施方式中，
所述业务控制单元具体用于：若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
结合第四方面或第四方面的第一种可能的实施方式或第四方面的第二种可能的实施方式或第四方面的第三种可能的实施方式，在第四方面的第四种可能的实施方式中，所述接入网设备基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第四方面的第四种可能的实施方式，在第四方面的第五种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第四方面的第四种可能的实施方式或第四方面的第五种可能的实施方式，在第四方面的第六种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第四方面的第四种可能的实施方式或第四方面的第五种可能的实施方式或第四方面的第六种可能的实施方式，在第四方面的第七种可能的实施方式中，所述接入网设备还包括发送单元，用于所述接收单元接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第一测量控制指令；其中，所述接收单元还用于，接收所述终端响应所述第一测量控制指令而发送的第一测量报告，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。
结合第四方面或第四方面的第一种至第七种可能的实施方式中的任意一种可能的实施方式，在第四方面的第八种可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。
结合第四方面或第四方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第四方面的第九种可能的实施方式中，所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
结合第四方面或第四方面的第一种至第九种可能的实施方式中的任意一种可能的实施方式，在第四方面的第十种可能的实施方式中，所述业务控制单元还用于，在拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
结合第四方面的第十种可能的实施方式，在第四方面的第十一种可能的实施方式中，所述接收单元还用于接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述业务控制单元基于所述通知消息确定所述终端已注册到电路交换域。
结合第四方面的第十种可能的实施方式活第四方面的第十一种可能的实施方式，在第四方面的第十二种可能的实施方式中，
所述业务控制单元还用于，接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在拒绝所述承载建立请求消息之前，确定所述终端的2G/3G网络信号质量满足语音业务。
结合第四方面的第十二种可能的实施方式，在第四方面的第十三种可能的实施方式中，所述接入网设备还包括发送单元，用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；所述接收单元还用于，接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
本发明实施例第五方面提供一种终端，包括：
接收单元，用于接收来自互联网协议多媒体子系统IMS网络的VOLTE业务的呼叫请求消息；
业务控制单元，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
结合第五方面，在第五方面的第一种可能的实施方式中，所述拒绝所述呼 叫请求消息包括：所述终端向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
结合第五方面或第五方面的第一种可能的实施方式，在第五方面的第二种可能的实施方式中，所述终端基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第五方面的第二种可能的实施方式，在第五方面的第三种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第五方面的第二种可能的实施方式或第五方面的第三种可能的实施方式，在第五方面的第四种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第五方面或第五方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第五方面的第五种可能的实施方式中，所述呼叫请求消息为邀请invite消息。
结合第五方面的第五种可能的实施方式，在第五方面的第六种可能的实施方式中，所述响应消息为临时失效响应消息。
本发明实施例第六方面提供一种终端，包括：
接收单元，用于接收指示建立VOLTE业务的用户指令；
业务控制单元，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端。
结合第六方面，在第六方面的第一种可能的实施方式中，所述业务处理单元基于所述终端的LTE网络上行信号质量参数和/或LTE网络上行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第六方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上 行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第六方面的第一种可能的实施方式或第六方面的第二种可能的实施方式，在第六方面的第三种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第六方面或第六方面的第一种至第三种可能的实施方式中的任意一种可能的实施方式，在第六方面的第四种可能的实施方式中，
所述终端还包括：测量单元，用于在接收指示建立VOLTE业务的用户指令之后，对LTE网络下行信号质量进行测量，以得到所述终端的LTE网络下行信号质量参数。
结合第六方面或第六方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第六方面的第五种可能的实施方式中，业务控制单元还用于在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述终端已注册到电路交换域。
结合第六方面或第六方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第六方面的第六种可能的实施方式中，业务控制单元还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，在所述终端还未注册到电路交换域的情况下在电路交换域注册。
结合第六方面的第六种可能的实施方式，在第六方面的第七种可能的实施方式中，业务控制单元在电路交换域注册包括：通过联合附着方式在电路交换域注册，或者通过重选过程驻留到电路交换域并在所述电路交换域注册。
结合第六方面第五种至第七种可能的实施方式中的任意一种可能的实施方式，在第六方面的第八种可能的实施方式中，业务控制单元还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述电路交换域的网络信号质量满足语音业务。
结合第六方面或第六方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第六方面的第九种可能的实施方式中，所述接收单元还 用于，在所述业务控制单元在电路交换域呼叫所述VOLTE业务的被叫终端之前，接收来自所述长期演进网络的通知消息，所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，所述通知消息被所述处理器用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
结合第六方面的第九种可能的实施方式，在第六方面的第十种可能的实施方式中，所述通知消息来自所述长期演进网络的接入网设备。
本发明实施例第七方面提供一种接入网设备，包括：
网络接口，用于接收来自核心网设备的VOLTE业务的承载建立请求消息；
处理器，用于若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
结合第七方面，在第七方面的第一种可能的实施方式中，
所述处理器具体用于，若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，通过所述网络接口向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，其中，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
结合第七方面的第一种可能的实施方式，在第七方面的第二种可能的实施方式中，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
结合第七方面的第一种可能的实施方式或第七方面的第二种可能的实施方式，在第七方面的第三种可能的实施方式中，
所述处理器具体用于，若确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务，通过所述网络接口向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
结合第七方面或者第七方面的第一种可能的实施方式或第七方面的第二种可能的实施方式或者第七方面的第三种可能的实施方式，在第七方面的第四种可能的实施方式中，所述处理器基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号 质量不能满足所述VOLTE业务。
结合第七方面的第四种可能的实施方式，在第七方面的第五种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第七方面的第四种可能的实施方式或第七方面的第五种可能的实施方式，在第七方面的第六种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第七方面的第四种可能的实施方式或第七方面的第五种可能的实施方式或第七方面的第六种可能的实施方式，在第七方面的第七种可能的实施方式中，所述处理器还用于，在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，通过所述网络接口向所述终端发送第一测量控制指令；通过所述网络接口接收所述终端响应所述第一测量控制指令而发送的第一测量报告，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。
结合第七方面或第七方面的第一种至第七种可能的实施方式中的任意一种可能的实施方式，在第七方面的第八种可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。
结合第七方面或第七方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第七方面的第九种可能的实施方式中，所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
结合第七方面或第七方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第七方面的第九种可能的实施方式中，所述处理器还用于，在拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
结合第七方面的第九种可能的实施方式，在第七方面的第十种可能的实施方式中，所述网络接口还用于接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述处理器基于所述通知消息确定所述终端已注册到电路交换域。
结合第七方面的第九种可能的实施方式或第十种可能的实施方式，在第七方面的第十一种可能的实施方式中，所述处理器还用于，接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在拒绝所述承载建立请求消息之前，确定所述终端的2G/3G网络信号质量满足语音业务。
结合第七方面的第十种可能的实施方式，在第七方面的第十二种可能的实施方式中，所述网络接口还用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
本发明第八方面提供一种终端，包括：
接收器，用于接收来自互联网协议多媒体子系统IMS网络的VOLTE业务的呼叫请求消息；
处理器，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
结合第八方面，在第八方面的第一种可能的实施方式中，所述终端还包括发射器，
所述处理器具体用于，通过所述发射器向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
结合第八方面或第八方面的第一种可能的实施方式，在第八方面的第二种可能的实施方式中，所述处理器基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第八方面的第二种可能的实施方式，在第八方面的第三种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第八方面的第二种可能的实施方式或第八方面的第三种可能的实施方式，在第八方面的第四种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第八方面或第八方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第八方面的第五种可能的实施方式中，所述呼叫请求消息为邀请invite消息。
结合第八方面的第五种可能的实施方式，在第八方面的第六种可能的实施方式中，所述响应消息为临时失效响应消息。
本发明实施例第九方面提供一种终端，包括：
用户接口，用于接收指示建立VOLTE业务的用户指令；
处理器，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，在电路交换域发起呼叫所述VOLTE业务的被叫终端。
结合第九方面，在第九方面的第一种可能的实施方式中，所述处理器基于所述终端的LTE网络上行信号质量参数和/或LTE网络上行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
结合第九方面的第一种可能的实施方式，在第二方面的第二种可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
结合第九方面的第一种可能的实施方式或第九方面的第二种可能的实施方式，在第九方面的第三种可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
结合第九方面或第九方面的第一种至第三种可能的实施方式中的任意一种可能的实施方式，在第九方面的第四种可能的实施方式中，
所述处理器还用于，在接收指示建立VOLTE业务的用户指令之后，对LTE网络下行信号质量进行测量，以得到所述终端的LTE网络下行信号质量参数。
结合第九方面或第九方面的第一种至第四种可能的实施方式中的任意一种可能的实施方式，在第九方面的第五种可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述终端已注册到电路交换域。
结合第九方面或第九方面的第一种至第三种可能的实施方式中的任意一种可能的实施方式，在第九方面的第六种可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，在所述终端还未注册到电路交换域的情况下在电路交换域注册。
结合第九方面的第六种可能的实施方式，在第九方面的第七种可能的实施方式中，所述处理器在电路交换域注册包括：通过联合附着方式在电路交换域注册，或者通过重选过程驻留到电路交换域并在所述电路交换域注册。
结合第九方面的第五种至第七种可能的实施方式中的任意一种可能的实施方式，在第九方面的第八种可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述电路交换域的网络信号质量满足语音业务。
结合第九方面或第九方面的第一种至第八种可能的实施方式中的任意一种可能的实施方式，在第九方面的第九种可能的实施方式中，所述终端还包括网络接口，其中，所述网络接口，用于所述处理器在电路交换域呼叫所述VOLTE业务的被叫终端之前，接收来自所述长期演进网络的通知消息，所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述处理器用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
结合第九方面的第九种可能的实施方式，在第九方面的第十种可能的实施方式中，所述通知消息来自所述长期演进网络的接入网设备。
本发明第十方面还提供一种通信系统，包括：
核心网设备和接入网设备，其中，所述接入网设备为本发明实施例提供的任意一种接入网设备。
本发明第十方面还提供一种业务处理方法，包括：
长期演进网络的核心网设备向长期演进网络的接入网设备发送VOLTE业务的承载建立请求消息；
所述核心网设备向所述接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
本发明第十一方面还提供一种核心网设备，包括：网络接口和处理器，
其中，所述网络接口用于，向接入网设备发送VOLTE业务的承载建立请求消息；向所述接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；其中，所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
可以看出，本发明的一些实施例的方案中，接入网设备在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，那么所述接入网设备拒绝所述承载建立请求消息，也即是说，在所述VOLTE业务的承载建立过程中，如果接入网设备发现终端的LTE网络信号质量不能满足所述VOLTE业务，那么接入网设备将阻止所述VOLTE业务的承载建立，这就有利于在一定程度上提高创建起来的VOLTE业务的稳定性，进而提升用户的通话体验。
附图说明
为了更清楚地说明本发明实施例技术方案，下面将对实施例和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它的附图。
图1-a是本发明实施例举例提供的一种网络部署架构的示意图；
图1-b是本发明实施例举例提供的一种业务处理方法的流程示意图；
图2是本发明实施例举例提供的另一种业务处理方法的流程示意图；
图3是本发明实施例举例提供的另一种业务处理方法的流程示意图；
图4是本发明实施例举例提供的另一种业务处理方法的流程示意图；
图5是本发明实施例举例提供的另一种业务处理方法的流程示意图；
图6是本发明实施例举例提供的另一种业务处理方法的流程示意图；
图7是本发明实施例举例提供的一种接入网设备的示意图；
图8是本发明实施例举例提供的一种终端的示意图；
图9是本发明实施例举例提供的另一种终端的示意图；
图10是本发明实施例举例提供的另一种接入网设备的示意图；
图11是本发明实施例举例提供的另一种终端的示意图；
图12是本发明实施例举例提供的另一种终端的示意图；
图13是本发明实施例提供的一种通信系统的示意图；
图14是本发明实施例提供的一种核心网设备的示意图。
具体实施方式
本发明实施例提供业务处理方法和相关装置以及通信系统，以期能够提高创建的VOLTE业务的稳定性，进而提升用户的通话体验。
为使得本发明的发明目的、特征、优点能够更加的明显和易懂，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，下面所描述的实施例仅仅是本发明的一部分实施例，而非全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包括。例如包括了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
请参见图1-a，参见图1-a是本发明实施例举例提供的一种通信网络的架构 示意图。其中，演进型基站(eNB，EvolvedNodeB)通过与UE之间可通过无线链路通信连接。图1举例所示架构的LTE网络的核心网设备包括移动性管理实体(MME，Mobility Management Entity)、服务网关(SGW，Serving Gateway)和分组数据网络网关(PGW，PDN Gateway)等，核心网设备可以负责为UE的VOLTE业务接入IMS网络起接续作用，负责传递UE与IMS网络之间的VOLTE呼叫相关信令，另外还可负责建立其相关的专用承载(例如业务质量等级标识(QCI，QoS Class Identifier)＝1)用于传递VOLTE业务的相关用户面数据(媒体数据)。
P-CSCF(可以分主叫方P-CSCF和被叫方P-CSCF)为VOLTE业务过程中UE接入互联网协议多媒体子系统(IMS，IP Multimedia Subsystem)网络的第一个接触点。其中，P-CSCF可以负责代理所有的VOLTE相关信令并完成路由控制。其中，在VOLTE呼叫过程中，P-CSCF还可以负责向策略和计费规则功能PCRF(Policy and Charging Rules Function)实体发送相关控制消息等。
其中，S-CSCF(可以分主叫方S-CSCF和被叫方S-CSCF)为IMS网络的业务交换中心，S-CSCF可主要负责接收并处理UE的注册请求、用户管理、会话控制、业务交换、业务控制、SIP消息处理和计费等等。S-CSCF还可以根据应用的触发原则将例如会话发起协议(SIP，Session Initiation Protocol)请求触发到相应的域选服务设备。
其中，被叫域选设备(TADS，terminating access domain selection)可负责将被叫语音会话接续到相应的域(例如CS域或IMS域)。被叫域选设备可决定向UE发起VOLTE呼叫(对应接到IMS域)还是传统的电路域呼叫(对应接到CS域)。
本发明实施例的一些技术方案可以基于图1-a举例所示的通信网络架构或其变形架构来具体实施。本发明实施例的技术方案力求能够提高建立起的VOLTE业务的稳定性，进而提升用户的通话体验。
下面先从接入网设备的角度予以描述。
请参见图1-b，图1-b是本发明的一个实施例提供的一种业务处理方法的流程示意图。其中，如图1-b举例所示，本发明的一个实施例提供的一种业务处 理方法可包括：
S101、接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息。
所述接入网设备可是所述VOLTE业务的主叫终端的接入网设备，也可以是所述VOLTE业务的被叫终端的接入网设备。
其中，接入网设备可以是eNB或用于终端无线接入的其它设备。
其中，核心网设备例如可以是MME或其它可发起或传递承载建立请求消息的设备。
S102、所述接入网设备若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
其中，所述终端可为所述VOLTE业务的主叫终端或被叫终端。
其中，终端具体可以是用户设备(UE，User Equipment)或其他形式的通信终端。
可以理解的是，所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务具体可指，所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务的用户面承载(例如QCI＝1的承载)，也即，所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务的用户面承载(所需的)的LTE网络信号质量条件。
可以看出，本实施例的技术方案中，接入网设备在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，那么所述接入网设备拒绝所述承载建立请求消息，也即是说，在所述VOLTE业务的承载建立过程中，如果接入网设备发现终端的LTE网络信号质量不能满足所述VOLTE业务，那么接入网设备将阻止所述VOLTE业务的承载建立，这就有利于在一定程度上提高创建起来的VOLTE业务的稳定性，进而提升用户的通话体验。例如，目前依然存在许多的LTE网络弱覆盖区域，运营商不可能做到每个区域的LTE网络的LTE网络信号质量都很好，例如一般LTE网络小区边缘的覆盖通常较弱，采用本实施例的技术方案后，由于LTE网络小区边缘弱覆盖的原因，那么终端在这些区域 可能就无法发起建立VOLTE业务了，进而有利于迫使终端通过其它方式建立起通话业务，有利于提高成功建立起的通话业务的稳定性。
可选的，所述拒绝所述承载建立请求消息可包括：向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，其中，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。当然，所述接入网设备也可通过其它方式来拒绝所述承载建立请求消息，例如直接忽略接收到的所述承载建立请求消息。
可以理解，所述响应消息用于所述核心网设备直接或者间接的触发所述终端发起电路域回落(CSFB，Circuit Switched Fallback)呼叫。具体例如，所述响应消息用于所述核心网设备通过IMS网络来触发所述终端发起电路域回落呼叫。例如，一般LTE网络小区边缘的覆盖通常较弱，由于LTE网络小区边缘弱覆盖的原因，那么终端在这些区域可能无法发起建立VOLTE业务，而所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫，迫使终端通过电路交换方式建立起通话业务，这样有利于提高成功建立起的通话业务的稳定性。
可选的，所述响应消息可以进一步携带所述VOLTE业务的承载建立失败的原因值。
可选的，所述向所述核心网设备发送拒绝所述承载建立请求消息的响应消息可包括：向MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
可选的，所述接入网设备例如可基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络上行信号质量参数可包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络上行信号强度低于第一阈值、所述终端的LTE网络上行信号信噪比低于第二阈值和/或所述终端的LTE网络上行丢包率高于第三阈值，那么可以认为所述终端的 LTE网络上行信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络下行信号强度低于第四阈值、所述终端的LTE网络下行信号信噪比低于第五阈值和/或所述终端的LTE网络下行丢包率高于第六阈值，那么可以认为所述终端的LTE网络下行信号质量不能满足所述VOLTE业务。
可以理解，基于所述VOLTE业务的终端的LTE网络上行信号质量参数和LTE网络下行信号质量参数来联合确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务的情况可以此类推。
可选的，所述接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，所述方法还可包括：所述接入网设备向所述终端发送第一测量控制指令；所述接入网设备接收所述终端响应所述第一测量控制指令而发送的第一测量报告，其中，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。也就是说，接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，可指示所述终端较实时的获取所述终端的LTE网络下行信号质量参数，并可根据所述终端的实时的获取LTE网络下行信号质量参数来确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式之中，在所述拒绝所述承载建立请求消息之前，所述方法还包括：所述接入网设备确定所述终端已注册到电路交换域。也就是说，所述接入网设备可以是在确定所述终端已注册到电路交换域的情况下才拒绝所述承载建立请求消息，而当所述接入网设备在确定所述终端还未注册到电路交换域的情况下，即使所述接入网设备确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，所述接入网设备也有可能不拒绝所述承载建立请求消息。
可选的，在本发明的一些可能的实施方式之中，所述方法还包括：所述接入网设备接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述接入网设备可基于所述 通知消息确定所述终端已注册到电路交换域。当然所述接入网设备也可能基于其它方式确定所述终端是否已注册到电路交换域。
可选的，在本发明一些可能的实施方式中，所述接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在所述拒绝所述承载建立请求消息之前，所述方法还可包括：所述接入网设备确定所述终端的2G/3G(第二代移动通信/第三代移动通信)网络信号质量满足语音业务。
可选的，所述接入网设备例如可基于所述VOLTE业务的终端的2G/3G上行信号质量参数和/或2G/3G网络下行信号质量参数确定所述终端的2G/3G网络信号质量不能满足所述VOLTE业务。
可选的，所述终端的2G/3G网络上行信号质量参数可包括：所述终端的2G/3G网络上行信号强度、所述终端的2G/3G网络上行信号信噪比、所述终端的2G/3G网络上行丢包率中的至少一种。具体来说，例如，若所述终端的2G/3G网络上行信号强度低于第七阈值、所述终端的2G/3G网络上行信号信噪比低于第八阈值和/或所述终端的2G/3G网络上行丢包率高于第九阈值，那么可以认为所述终端的2G/3G网络上行信号质量不能满足所述语音业务。
可选的，所述终端的2G/3G网络下行信号质量参数包括：所述终端的2G/3G网络下行信号强度、所述终端的2G/3G网络下行信号信噪比、所述终端的2G/3G网络下行丢包率中的至少一种。具体来说，例如，若所述终端的2G/3G网络下行信号强度低于第十阈值、所述终端的2G/3G网络下行信号信噪比低于第十一阈值和/或所述终端的2G/3G网络下行丢包率高于第十二阈值，那么可以认为所述终端的2G/3G网络下行信号质量不能满足语音业务。
可以理解，基于所述终端的2G/3G网络上行信号质量参数和2G/3G网络下行信号质量参数来联合确定所述终端的2G/3G网络信号质量是否能满足语音业务的情况可以此类推。
可选的，在本发明一些可能的实施方式中，接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，所述方法还可包括：所述接入网设备向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；所述接入网设备接收所述终端响应所述第二测 量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。也就是说，接入网设备接收来自核心网设备的VOLTE业务的承载建立请求消息之后，可指示所述终端较实时的获取所述终端的2G/3G网络下行信号质量参数，并可根据所述终端的实时的获取2G/3G下行信号质量参数来确定所述终端的2G/3G网络信号质量是否能满足语音业务。
下面从长期演进网络的核心网设备的角度予以描述。
一种业务处理方法，包括：LTE网络的核心网设备向长期演进网络的接入网设备发送VOLTE业务的承载建立请求消息；所述核心网设备向所述长期演进网络的接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；其中，所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
下面从被叫终端的角度予以描述。
请参见图2，图2是本发明的另一个实施例提供的另一种业务处理方法的流程示意图。其中，如图2举例所示，本发明的另一个实施例提供的另一种业务处理方法可包括：
201、终端接收来自IMS网络的VOLTE业务的呼叫请求消息。
其中，所述呼叫请求消息可为邀请invite消息或其它用于呼叫建立VOLTE业务的消息。
202、终端若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
可以理解，终端的LTE网络信号质量不能满足所述VOLTE业务具体可指，所述终端的LTE网络信号质量不能满足所述VOLTE业务的用户面承载(如QCI＝1的承载)，也即所述终端的LTE网络信号质量不能满足所述VOLTE业务的用户面承载(所需的)的LTE网络信号质量条件。
可以看出，本实施例的技术方案之中，终端接收来自IMS网络的VOLTE 业务的呼叫请求消息之后，若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，那么所述终端拒绝所述呼叫请求消息，也即是说，在所述VOLTE业务的承载建立过程中，如果被叫终端发现它自己的LTE网络信号质量不能满足所述VOLTE业务，那么被叫终端将阻止所述VOLTE业务的承载建立，这样就有利于在一定程度上提高创建起来的VOLTE业务的稳定性，进而提升用户的通话体验。例如，目前依然存在许多的LTE网络弱覆盖区域，运营商不可能做到每个区域的LTE网络的LTE网络信号质量都很好，例如一般LTE网络小区边缘的覆盖通常较弱，采用本实施例的方案后，由于LTE网络小区边缘弱覆盖的原因，那么终端在这些区域可能就无法发起建立VOLTE业务了，进而有利于迫使终端通过其它方式建立起通话业务，有利于提高成功建立起的通话业务的稳定性。
可选的，所述拒绝所述呼叫请求消息可包括：所述终端向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
可选的，所述响应消息例如可为临时失效(temporarily unavailable)响应消息。具体例如，temporarily unavailable响应消息可为480响应消息。
可选的，所述终端可基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络上行信号质量参数可包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络上行信号强度低于第一阈值、所述终端的LTE网络上行信号信噪比低于第二阈值和/或所述终端的LTE网络上行丢包率高于第三阈值，那么可以认为所述终端的LTE网络上行信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络下行信号 强度低于第四阈值、所述终端的LTE网络下行信号信噪比低于第五阈值和/或所述终端的LTE网络下行丢包率高于第六阈值，那么可以认为所述终端的LTE网络下行信号质量不能满足所述VOLTE业务。
可以理解，基于终端的LTE网络上行信号质量参数和LTE网络下行信号质量参数来联合确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务的情况可以此类推。
可选的，终端接收来自IMS网络的VOLTE业务的呼叫请求消息之后，所述终端可以对LTE网络下行信号质量进行测量以得到所述终端的LTE网络下行信号质量参数。也就是说，终端接收来自IMS网络的VOLTE业务的呼叫请求消息之后，可较实时的获取所述终端的LTE网络下行信号质量参数，并可根据所述终端的实时的获取LTE网络下行信号质量参数来确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务。
可选的，终端接收来自IMS网络的VOLTE业务的呼叫请求消息之后，所述终端从接入网设备获得所述终端的LTE网络上行信号质量参数。也就是说，终端接收来自IMS网络的VOLTE业务的呼叫请求消息之后，可较实时的从接入网设备获取所述终端的LTE网络上行信号质量参数，并可根据获取的LTE网络上行信号质量参数来确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务。
下面从主叫终端的角度予以描述。
请参见图3，图3是本发明的另一个实施例提供的另一种业务处理方法的流程示意图。其中，如图3举例所示，本发明的另一个实施例提供的另一种业务处理方法可包括：
301、终端接收指示建立VOLTE业务的用户指令。
例如当终端的用户想要基于VOLTE业务与另一用户通话时，用户可发出指示建立VOLTE业务的用户指令。
302、终端若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端。
具体例如，终端若确定所述终端的LTE网络信号质量不能够满足VOLTE 业务，那么所述终端发起CSFB流程以回退到电路交换域，并在电路交换域呼叫所述VOLTE业务的被叫终端。
可以看出，本实施例的技术方案之中，终端接收指示建立VOLTE业务的用户指令之后，若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，那么所述终端在电路交换域呼叫所述VOLTE业务的被叫终端，也即是说，在准备建立所述VOLTE业务的承载之前，如果主叫终端发现它自己的LTE网络信号质量不能满足所述VOLTE业务，那么主叫终端将阻止所述VOLTE业务承载建立，而是直接改为建立电路交换域连接，这样就有利于在一定程度上提高创建起来的通话业务的稳定性，进而提升用户通话体验。例如目前依然存在许多的LTE网络弱覆盖区域，运营商不可能做到每个区域的LTE网络的信号质量都很好，例如一般LTE网络小区边缘的覆盖通常较弱，采用本实施例的方案后，由于LTE网络小区边缘弱覆盖的原因，那么终端在这些区域可能就无法发起建立VOLTE业务了，进而有利于迫使终端通过其它方式建立起通话业务，有利于提高成功建立起的通话业务的稳定性。
可选的，所述终端可基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络上行信号质量参数可包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络上行信号强度低于第一阈值、所述终端的LTE网络上行信号信噪比低于第二阈值和/或所述终端的LTE网络上行丢包率高于第三阈值，那么可以认为所述终端的LTE网络上行信号质量不能满足所述VOLTE业务。
可选的，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。具体来说，例如，若所述终端的LTE网络下行信号强度低于第四阈值、所述终端的LTE网络下行信号信噪比低于第五阈值和/或所述终端的LTE网络下行丢包率高于第六阈值，那么可以认为所述终端的LTE网 络下行信号质量不能满足所述VOLTE业务。
可以理解，基于终端的LTE网络上行信号质量参数和LTE网络下行信号质量参数来联合确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务的情况可以此类推。
可选的，终端接收指示建立VOLTE业务的用户指令之后，所述终端可对LTE网络下行信号质量进行测量以得到所述终端的LTE网络下行信号质量参数。也就是说，终端接收指示建立VOLTE业务的用户指令之后，可较实时的获取所述终端的LTE网络下行信号质量参数，并可根据所述终端的实时的获取LTE网络下行信号质量参数来确定所述终端的LTE网络信号质量是否能满足所述VOLTE业务。
可选的，终端接收指示建立VOLTE业务的用户指令之后，所述终端从接入网设备获得所述终端的LTE网络上行信号质量参数。也就是说，终端接收指示建立VOLTE业务的用户指令之后，可较实时的从接入网设备获取所述终端的LTE网络上行信号质量参数，并可根据获取的LTE网络上行信号质量参数来确定所述终端的信号质量是否能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式之中，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式之中，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：当所述终端还未注册到电路交换域，所述终端在电路交换域注册。
可选的，在本发明的一些可能的实施方式之中，所述终端在电路交换域注册包括：所述终端通过联合附着方式在电路交换域注册，或者所述终端通过重选过程驻留到电路交换域并在所述电路交换域注册。
也就是说，所述接入网设备可以是在确定所述终端已注册到电路交换域的情况下才在电路交换域呼叫所述VOLTE业务的被叫终端，而当所述接入网设备在确定所述终端还未注册到电路交换域的情况下，所述终端有可能不在电路交换域呼叫所述VOLTE业务的被叫终端。
可选的，在本发明的一些可能的实施方式之中，在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述电路交换域的网络信号质量满足语音业务。也就是说，所述接入网设备可以是在所述电路交换域的网络信号质量满足语音业务的情况下才在电路交换域呼叫所述VOLTE业务的被叫终端，而当所述接入网设备在确定所述电路交换域的网络信号质量不能满足语音业务的情况下，所述终端有可能不在电路交换域呼叫所述VOLTE业务的被叫终端。
可选的，在本发明的一些可能的实施方式之中，所述终端若确定所述终端的信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还可包括：所述终端接收来自所述长期演进网络的通知消息；所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述终端用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。例如所述通知消息来自所述长期演进网络的接入网设备。
为便于更好的理解和实施本发明实施例的上述技术方案，下面结合一些具体的应用场景进行详细描述。
请参见图4，图4是本发明的另一个实施例提供的另一种业务处理方法的流程示意图。其中，如图4举例所示，本发明的另一个实施例提供的另一种业务处理方法可包括：
S401、主叫UE通过发送邀请(invite)消息来发起建立VOLTE业务。
S402、主叫方P-CSCF接收来自主叫UE的invite消息，接收到invite消息触发主叫方P-CSCF为主叫UE建立IMS主叫会话。主叫方P-CSCF将所述invite消息发往后续的IMS节点(例如S-CSCF和SCCAS等等IMS节点)。
后续的IMS节点开始处理接收到的invite消息，被叫UE可能接收到网络侧转发的invite消息。
S403、主叫方P-CSCF若收到主叫方S-CSCF发送的183响应消息，主叫方P-CSCF可向主叫UE转发所述183响应消息。
S404、主叫方P-CSCF向PCRF发送鉴权授权请求以触发VOLTE业务的专有 承载的建立。当然，主叫方P-CSCF亦可以不等到所述183响应消息就触发VOLTE业务的专有承载的建立，即主叫方P-CSCF收到所述invite消息就触发VOLTE业务的专有承载的建立流程。
鉴权授权请求(AAR，Authentication Authorization Request)可携带主叫UE的用户标识、IMS应用层计费标识和媒体描述信息等。媒体描述信息可包括如下信息的至少一种：分类器标识、带宽要求描述信息、媒体类型描述信息和QoS参数。
S405、PCRF接收AAR。
PCRF可根据AAR携带的媒体描述信息向PGW发送携带有QoS规则(rules)的重认证请求(RAR，Re-authentication Request)，以触发PGW建立VOLTE业务的用户面数据专有承载。通常来说，VOLTE业务的用户面数据专有承载的业务质量等级标识(QCI)＝1。
其中，QoS rules包括QoS关键参数，
QoS关键参数可以包括保证比特速率(GBR，Guaranteed Bit Rate)、分配保持优先级(ARP，Allocation/Retention Priority)、业务质量等级标识(QCI)和/或最大比特率(MBR，Maximum Bit Rate)等。
S406、PGW接收来自PCRF的RAR消息，PGW向PCRF发送用于响应RAR请求的信用重授权应答(RAA，Re-authentication Answer)消息。
S407、PCRF实体接收来自PGW的RAA消息，PCRF在接收RAA消息后向主叫方P-CSCF发送鉴权授权应答(AAA，Authentication Authorization Answer)消息。
S408、PGW在接收到PCRF实体发送的RAR请求之后，PGW在根据RAR消息中携带的QoS参数触发建立QCI＝1专有承载的过程中，PGW可向SGW发送建立承载请求(create bearer request)消息。
SGW接收来自PGW的create bearer request消息，SGW根据接收的所述create bearer request消息向MME发送create bearer request消息。
S409、MME向eNB发送承载建立请求(bearer setup request)消息以请求eNB为所述QCI＝1的专有承载分配对应的空口资源和S1口资源。
S410、eNB收到MME发送的bearer setup request消息，确定请求建立的是VOLTE业务的用户面数据专有承载，具体地是QCI＝1的专有承载。
eNB确定主叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件。
例如，eNB确定主叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件，可包括：基于主叫UE的LTE网络的信号质量参数确定主叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件，所述主叫UE的LTE网络信号质量参数包括：所述主叫UE的LTE网络上行信号质量参数和所述主叫UE的LTE网络下行信号质量参数。
可选的，所述主叫UE的LTE网络上行信号质量参数包括：所述主叫UE的LTE网络上行信号强度、所述主叫UE的LTE网络上行信号信噪比和/或所述主叫UE的LTE网络上行丢包率等。
可选的，所述主叫UE的LTE网络下行信号质量参数包括：所述主叫UE的LTE网络下行信号强度、所述主叫UE的LTE网络下行信号信噪比和/或所述主叫UE的LTE网络下行丢包率等。
具体例如，eNB收到MME发送的bearer setup request消息之后，eNB可向所述主叫UE发送测量控制指令，接收主叫UE响应所述测量控制指令而发送的测量报告，所述测量报告携带有主叫UE的LTE网络下行信号质量参数。
本实施例中主要以eNB确定主叫UE当前的LTE网络信号质量不能满足建立QCI＝1的专有承载的信号质量条件的情况为例。
S411、若eNB确定主叫UE当前的LTE网络信号质量不能满足建立QCI＝1的专有承载的信号质量条件，那么eNB可拒绝所述bearer setup request消息，eNB可向MME回复承载建立响应消息。
其中，所述承载建立响应消息中可携带用于指示QCI＝1的承载建立失败的指示信元，并携带承载建立失败的原因值。
所述原因值具体可以是：Radio resources not available、Failure in the Radio Interface Procedure或者Not supported QCI value，原因值也可是一个标准未定义的原因值，此处并不做限定。
可选的，eNB拒绝所述bearer setup request消息之前，所述eNB还可确定所述VOLTE业务的主叫UE的2G/3G网络信号质量满足语音业务。例如，所述eNB向所述主叫UE发送第二测量控制指令，其中，第二测量控制指令用于指示所述主叫UE测量2G/3G网络信号质量；eNB接收主叫UE响应第二测量控制指令发送的第二测量报告，第二测量报告携带有主叫UE的2G/3G网络的下行信号质量参数。eNB例如基于第二测量报告确定主叫UE当前的LTE网络信号质量是否能语音业务。
可选的，eNB拒绝所述bearer setup request消息之前，eNB还可先确定所述VOLTE业务的终端在电路交换域注册。例如eNB拒绝所述bearer setup request消息之前可接收来自MME的通知消息,所述通知消息携带用于指示所述主叫UE已注册到电路交换域的指示信息。
具体例如，所述通知消息可具体为下行非接入层传输消息(DOWNLINK NAS TRANSPORT)、初始上下文建立请求消息(INITIAL CONTEXT SETUP REQUEST)、UE上下文修改请求消息(UE CONTEXT MODIFICATION REQUEST)。或者eNB收到MME发送的bearer setup request消息中携带用于指示所述终端已经注册到电路交换域指示信息。
S412、MME向SGW发送建立承载响应(create bearer response)消息。
其中，所述承载建立响应消息携带承载建立被拒绝的原因值，所述MME所携带的原因值可参考从eNB获取的原因值而设置。
S413、SGW接收来自MME的create bearer response消息，SGW根据接收到的create bearer response消息向PGW发送create bearer response消息。
PGW向PCRF实体发送信用控制请求(CCR，Credit Control Request)消息，其中，CCR消息携带用于说明QCI＝1的专用承载建立失败的指示，并携带专用承载建立失败的原因值，所述原因值具体参考所述create bearer response消息携带的原因值来设置。
S414、PCRF实体向PGW发送信用控制应答(CCA，Credit Control Answer)消息。
S415、PCRF实体根据CCR消息向主叫方P-CSCF发送重认证请求(RAR， Re-authentication Request)消息/会话中止请求(ASR，Abort-Session-Request)消息，所述RAR消息/ASR消息可携带用于指示承载资源不足的指示信息或用于指示资源分配失败的指示信息。
S416、主叫方P-CSCF向PCRF实体发送信用重授权应答(RAA，Re-authentication Answer)消息/会话中止应答(ASA，Abort-Session-Answer)消息。
S417、主叫方P-CSCF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，向主叫UE发送380响应消息或503响应消息。
可选地，由于各个运营商P-CSCF获取到承载资源不足的指示信息或者资源分配失败的指示信息后会发送不同的响应消息。为了解决VoLTE漫游，P-CSCF可以根据主叫UE是否是漫游用户来下发不同的响应消息，比如针对A运营商发送380消息，针对B运营商发送503消息。
进一步，如果标准定义在这种场景下推荐发送第一响应消息，比如380响应消息，那么P-CSCF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，P-CSCF确定该VoLTE用户为漫游用户，则P-CSFB可发送所述第一响应消息。
综上所述，P-CSCF确定VoLTE用户为漫游用户，则所述P-CSCF可根据所述漫游用户所归属的PLMN发送第一响应消息。可选地，P-CSCF为所有漫游用户统一发送第二响应消息。若P-CSCF确定VoLTE用户为非漫游用户，则所述P-CSCF根据配置发送第三响应消息。
另外，可选地，VoLTE呼叫发生失败，IMS网络根据不同原因指示UE在2/3G电路域发起呼叫或者继续停留在LTE网络或者WiFi网络发起VoWiFi呼叫或者继续在LTE网络发起呼叫。
具体举例说来:
1)P-CSCF从PCRF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，P-CSCF会发送第三响应消息，指示UE在2/3G电路域发起呼叫。
2)P-CSCF从PCRF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，P-CSCF会发送第四响应消息，指示UE在WiFi网络发起VoWiFi 呼叫。
3)P-CSCF发生拥塞导致VoLTE呼叫失败，P-CSCF会发送第五响应消息，指示UE继续在LTE网络发起呼叫。
进一步，第五响应消息指示UE使用不同的P-CSCF发起呼叫。
S418、若主叫方P-CSCF已经接收到183响应消息，主叫方P-CSCF可向主叫方S-CSCF等设备发送取消(cancel)消息，用以取消已经请求的VOLTE业务相关呼叫。
若主叫方P-CSCF未接收到183响应消息，主叫方P-CSCF可不经主叫方S-CSCF等设备向被叫UE发送cancel消息。
S419、主叫UE接收到主叫方P-CSCF发送的380或503消息后，可以重新主叫域选并发起CSFB呼叫。UE侧和网络侧配合执行CSFB流程，最终可能在CS域建立语音呼叫。
上述过程中，ENB在判断主叫UE当前LT网络信号质量不满足QCI＝1的承载要求时直接拒绝承载建立请求，从而导致VOLTE呼叫转变为CSFB呼叫。而在本发明另一实施例中，当ENB在判断当前LTE信号质量不满足QCI＝1的承载要求时，也可接受承载建立请求以便成功建立VOLTE呼叫。但后续ENB根据UE当前的LTE信号质量，对QCI＝1承载上数据采用降阶编码方式传输，例如将原来对应的128QAM降为64QAM。
采用本实施例技术方案后，有利于保证当主叫UE处于无法满足VOLTE业务信号质量要求的LTE弱覆盖区域(如LTE室内覆盖弱)时，能够在主叫语音会话建立阶段就使用CSFB呼叫来代替VOLTE业务呼叫，避免因竭力建立VOLTE业务呼叫而带来的呼叫丢失、会话质量差或呼叫建立时延大等等技术问题。
另外，VOLTE业务呼叫也可以不受eNB信号质量评估结果的控制，而是根据运营商地策略，提供了小区级别的VOLTE呼叫控制开关，即针对某些特定LTE小区，运营商不允许VOLTE建立，例如，如果收到MME发送的QCI＝1承载建立请求，eNB直接拒绝承载建立请求。
请参见图5，图5是本发明的另一个实施例提供的另一种业务处理方法的流 程示意图。其中，如图5举例所示，本发明的另一个实施例提供的另一种业务处理方法可包括：
S501、被叫方P-CSCF接收被叫方S-CSCF发送的invite消息，接收到invite消息可触发被叫方P-CSCF为被叫UE建立IMS被叫会话。被叫方P-CSCF继续将所述invite消息发往被叫UE。
S502、被叫UE收到所述invite消息后向被叫方P-CSCF回复183响应消息。
S503、被叫方P-CSCF若接收到183响应消息，被叫方P-CSCF向被叫方S-CSCF发送183响应消息，被叫方S-CSCF可进一步向主叫方S-CSCF发送183响应消息，主叫方S-CSCF进一步向主叫方P-CSCF发送183响应消息，主叫方P-CSCF若收到主叫方S-CSCF发送的183响应消息，主叫方P-CSCF可向主叫UE转发所述183响应消息。
S504、被叫方P-CSCF向PCRF发送鉴权授权请求以触发VOLTE业务的专有承载的建立。当然，被叫方P-CSCF亦可以不等到所述183响应消息就触发VOLTE业务的专有承载的建立，即被叫方P-CSCF收到所述invite消息就触发VOLTE业务的专有承载的建立流程。
鉴权授权请求(AAR，Authentication Authorization Request)可携带被叫UE的用户标识、IMS应用层计费标识和媒体描述信息等。媒体描述信息可包括如下信息的至少一种：分类器标识、带宽要求描述信息、媒体类型描述信息和QoS参数。
S505、PCRF接收AAR。PCRF根据AAR携带的媒体描述信息向PGW发送携带有QoS rules的重认证请求(RAR，Re-authentication Request)，以触发PGW建立VOLTE业务的用户面数据专有承载。通常来说，VOLTE业务的用户面数据专有承载的业务质量等级标识(QCI，QoS Class Identifier)＝1。
其中，QoS rules包括QoS关键参数，
QoS关键参数可以包括保证比特速率(GBR，Guaranteed Bit Rate)、分配保持优先级(ARP，Allocation/Retention Priority)、业务质量等级标识(QCI)和/或最大比特率(MBR，Maximum Bit Rate)等。
S506、PGW接收来自PCRF的RAR消息，PGW向PCRF发送用于响应RAR 请求的信用重授权应答(RAA，Re-authentication Answer)消息。
S507、PCRF实体接收来自PGW的RAA消息，PCRF在接收RAA消息后向被叫方P-CSCF发送鉴权授权应答(AAA，Authentication Authorization Answer)消息。
S508、PGW在接收到PCRF实体发送的RAR请求之后，PGW在根据RAR消息中携带的QoS参数触发建立QCI＝1专有承载的过程中，PGW可向SGW发送建立承载请求(create bearer request)消息。
SGW接收来自PGW的create bearer request消息，SGW根据接收到的create bearer request消息向MME发送create bearer request消息。
S509、MME向eNB发送承载建立请求(bearer setup request)消息以请求eNB为所述QCI＝1的专有承载分配对应的空口资源和S1口资源。
S510、eNB收到MME发送的bearer setup request消息，确定请求建立的是VOLTE业务的用户面数据专有承载，具体地是QCI＝1的专有承载。
eNB确定被叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件。
例如，eNB确定被叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件，可包括：基于被叫UE的LTE网络信号质量参数确定被叫UE当前的LTE网络信号质量是否能满足建立QCI＝1的专有承载的信号质量条件，所述被叫UE的LTE网络信号质量参数包括：所述被叫UE的LTE网络上行信号质量参数和所述被叫UE的LTE网络下行信号质量参数。
可选的，所述被叫UE的LTE网络上行信号质量参数包括：所述被叫UE的LTE网络上行信号强度、所述被叫UE的LTE网络上行信号信噪比和/或所述被叫UE的LTE网络上行丢包率等。
可选的，所述被叫UE的LTE网络下行信号质量参数包括：所述被叫UE的LTE网络下行信号强度、所述被叫UE的LTE网络下行信号信噪比和/或所述被叫UE的LTE网络下行丢包率等。
具体例如，eNB收到MME发送的bearer setup request消息之后，eNB可向所述被叫UE发送测量控制指令，接收被叫UE响应所述测量控制指令而发送的测 量报告，所述测量报告携带有被叫UE的LTE网络下行信号质量参数。
本实施例中主要以eNB确定被叫UE当前的LTE网络信号质量不能满足建立QCI＝1的专有承载的信号质量条件的情况为例。
S511、若eNB确定被叫UE当前的LTE网络信号质量不能满足建立QCI＝1的专有承载的信号质量条件，那么eNB可拒绝所述bearer setup request消息，eNB可向MME回复承载建立响应消息。
其中，所述承载建立响应消息中可携带用于指示QCI＝1的承载建立失败的指示信元，并携带承载建立失败的原因值。
所述原因值具体可以是：Radio resources not available、Failure in the Radio Interface Procedure或者Not supported QCI value，原因值也可是一个标准未定义的原因值，此处并不做限定。
可选的，eNB拒绝所述bearer setup request消息之前，所述eNB还可确定所述VOLTE业务的被叫UE的2G/3G网络信号质量满足语音业务。例如，所述eNB向所述被叫UE发送第二测量控制指令，其中，第二测量控制指令用于指示所述被叫UE测量2G/3G网络信号质量；eNB接收被叫UE响应第二测量控制指令发送的第二测量报告，第二测量报告携带有被叫UE的2G/3G网络的下行信号质量参数。eNB例如基于第二测量报告确定被叫UE当前的LTE网络信号质量是否能语音业务。
可选的，eNB拒绝所述bearer setup request消息之前，eNB还可先确定所述VOLTE业务的终端在电路交换域注册。例如eNB拒绝所述bearer setup request消息之前，可接收来自MME的通知消息,所述通知消息携带用于指示所述被叫UE已注册到电路交换域的指示信息。
具体例如，所述通知消息可具体为下行非接入层传输消息(DOWNLINK NAS TRANSPORT)、初始上下文建立请求消息(INITIAL CONTEXT SETUP REQUEST)、UE上下文修改请求消息(UE CONTEXT MODIFICATION REQUEST)。或者eNB收到MME发送的bearer setup request消息中携带用于指示所述终端已经注册到电路交换域指示信息。
S512、MME向SGW发送建立承载响应(create bearer response)消息。
其中，所述承载建立响应消息携带承载建立被拒绝的原因值，所述MME所携带的原因值可参考从eNB获取的原因值而设置。
S513、SGW接收来自MME的create bearer response消息，SGW根据接收到的create bearer response消息向PGW发送create bearer response消息。
PGW向PCRF实体发送信用控制请求(CCR，Credit Control Request)消息，其中，CCR消息携带用于说明QCI＝1的专用承载建立失败的指示，并携带专用承载建立失败的原因值，所述原因值具体参考所述create bearer response消息携带的原因值来设置。
S514、PCRF实体向PGW发送信用控制应答(CCA，Credit Control Answer)消息。
S515、PCRF实体根据所述CCR消息，向被叫方P-CSCF发送RAR消息/会话中止请求(ASR，Abort-Session-Request)消息，其中，所述RAR消息/ASR消息可携带用于指示承载资源不足的指示信息或者用于指示资源分配失败的指示信息。
S516、被叫方P-CSCF向PCRF实体发送RAA消息/ASA消息。
S517、被叫方P-CSCF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，经被叫方S-CSCF向IMS网络中的被叫域选设备发送380或503响应消息。
S518、被叫方P-CSCF获取到承载资源不足的指示信息或者资源分配失败的指示信息后，向被叫UE发送取消(cancel)消息，用以取消已经请求的VOLTE业务相关会话。步骤S518和步骤S519不限定先后关系。
S519、IMS网络的被叫域选设备将被叫会话重新域选至CS域，并经被叫方S-CSCF等设备向CS域呼叫控制设备(如MSC)发起呼叫。
S520、CS域呼叫控制设备(如MSC)经SGs接口向MME发起呼叫。
S521、MME触发被叫UE的CSFB流程，具体流程细节见3GPP TS 23.272中的相关描述。此处不再赘述。经所述被叫UE的CSFB流程，所述被叫UE可能最终在CS域建立语音会话。
采用本实施例技术方案后，有利于保证当被叫UE处于无法满足VOLTE业 务信号质量要求的LTE弱覆盖区域(如LTE室内覆盖弱)时，能够在被叫语音会话建立阶段就使用CSFB呼叫来代替VOLTE业务呼叫，避免因竭力建立VOLTE业务呼叫而带来的呼叫丢失、会话质量差或呼叫建立时延大等等技术问题。
另外，VOLTE业务呼叫也可以不受eNB信号质量评估结果的控制，而是根据运营商地策略，提供了小区级别的VOLTE呼叫控制开关，即针对某些特定LTE小区，运营商不允许VOLTE建立，例如，如果收到MME发送的QCI＝1承载建立请求，eNB直接拒绝承载建立请求。
请参见图6，图6是本发明的另一个实施例提供的另一种业务处理方法的流程示意图。其中，如图6举例所示，本发明的另一个实施例提供的另一种业务处理方法可包括：
S601、被叫方P-CSCF收到invite消息后建立IMS被叫会话，将所述invite消息发往被叫UE。
S602、被叫UE接收invite消息。
被叫UE收到invite消息后并不立即建立VOLTE语音会话，而是先确定所述被叫UE当前的长期演进网络的信号质量是否满足VOLTE业务的承载(QCI＝1的承载)的信号质量条件。
例如，被叫UE可基于所述被叫UE的长期演进网络的信号质量参数确定出所述被叫UE当前的长期演进网络的信号质量不能满足针对VOLTE业务的承载的信号质量条件，其中，所述被叫UE的长期演进网络的信号质量参数包括：所述被叫UE的长期演进网络上行信号质量参数和/或所述被叫UE的长期演进网络下行信号质量参数。
可选的，所述被叫UE的长期演进网络上行信号质量参数包括：所述被叫UE的长期演进网络上行信号强度、所述被叫UE的长期演进网络上行信号信噪比和/或所述被叫UE的长期演进网络上行丢包率。
可选的，所述被叫UE的长期演进网络下行信号质量参数包括：所述被叫UE的长期演进网络下行信号强度、所述被叫UE的长期演进网络下行信号信噪比和/或所述被叫UE的长期演进网络下行丢包率。
可选的，在所述接收invite消息之后所述被叫UE可对长期演进网络下行信号质量进行测量，以得到所述被叫UE的长期演进网络下行信号质量参数。
S603、被叫UE如果评估被叫UE当前的LTE信号质量并不满足VOLTE语音会话要求，向被叫P-CSCF回复480响应消息，所述480响应消息用于指示当前VOLTE服务不可用。
S604、被叫P-CSCF收到480响应消息后，经S-CSCF向IMS域选服务设备发送480响应消息。
S605、IMS网络的域选服务设备获取指示出VOLTE服务不可用的480响应消息后，将所述语音被叫会话重新域选至CS域，
S606、IMS域选服务设备经被叫S-CSCF等设备向CS域呼叫控制设备(如MSC)发起呼叫。
S607、CS域呼叫控制设备(如MSC)经SGs接口向MME发起呼叫。
S608、MME触发被叫UE的CSFB流程，具体流程细节见3GPP TS 23.272中的相关描述。此处不再赘述。经所述被叫UE的CSFB流程，所述被叫UE可能最终在CS域建立语音会话。
可以看出，本实施例的技术方案之中，被叫UE接收来自IMS网络的VOLTE业务的呼叫请求消息之后，若确定所述被叫UE的信号质量不能满足所述VOLTE业务，那么所述被叫UE拒绝所述呼叫请求消息，也即是说，在所述VOLTE业务的承载建立过程中，如果被叫UE发现它自己的信号质量不能满足所述VOLTE业务，那么被叫UE将阻止所述VOLTE业务的承载建立，这样就有利于在一定程度上提高创建起来的VOLTE业务的稳定性，进而提升用户的通话体验。例如目前依然存在许多的LTE网络弱覆盖区域，运营商不可能做到每个区域的LTE网络的信号质量都很好，例如一般LTE网络小区边缘的覆盖通常较弱，采用本实施例的方案后，由于LTE网络小区边缘弱覆盖原因，那么被叫UE在这些区域可能就无法发起建立VOLTE业务了，并且迫使被叫UE通过其它方式建立起CS域通话业务，可见这样有利于提高成功建立起的通话业务的稳定性。
参见图7，本发明实施例提供一种接入网设备700，可包括：
接收单元710，用于接收来自核心网设备的VOLTE业务的承载建立请求消息。
业务控制单元720，用于若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
可选的，在本发明的一些可能的实施方式中，所述业务控制单元720具体用于：若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
可选的，在本发明的一些可能的实施方式中，所述业务控制单元具体用于：若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述接入网设备基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明一些可能实施方式中，接入网设备700还包括：
发送单元，用于在接收单元710接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第一测量控制指令；所述接收单元710还用于，接收所述终端响应所述第一测量控制指令而发送的第一测量报告，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。
可选的，在本发明的一些可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。
可选的，在本发明的一些可能的实施方式中，所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
可选的，在本发明的一些可能的实施方式中，所述业务控制单元还用于在拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，所述接收单元还用于接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述业务控制单元基于所述通知消息确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，所述业务控制单元还用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在拒绝所述承载建立请求消息之前，确定所述终端的2G/3G网络信号质量满足语音业务。
可选的，在本发明的一些可能的实施方式中，所述接入网设备还包括发送单元，用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；接收单元用于接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
可以理解，本实施例的接入网设备700的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图8，本发明实施例还提供一种终端800，可包括：
接收单元810，用于接收来自互联网协议多媒体子系统IMS网络的VOLTE业务的呼叫请求消息；
业务控制单元820，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
可选的，在本发明的一些可能的实施方式中，所述拒绝所述呼叫请求消息 包括：所述终端向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述终端基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述呼叫请求消息为邀请invite消息。
可选的，在本发明的一些可能的实施方式中，所述响应消息为临时失效响应消息(例如480消息)。
可以理解，本实施例的终端800(也可称通信终端)的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图9，本发明实施例还提供一种终端900，包括：
接收单元910，用于接收指示建立VOLTE业务的用户指令；
业务控制单元920，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端。
可选的，在本发明的一些可能的实施方式中，所述业务控制单元920基于所述终端的LTE网络上行信号质量参数和/或LTE网络上行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端还包括：
测量单元，可用于在接收指示建立VOLTE业务的用户指令之后，对LTE网络下行信号质量进行测量，以得到所述终端的LTE网络下行信号质量参数。
可选的，在本发明的一些可能的实施方式中，业务控制单元920还用于在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，业务控制单元920还用于在电路交换域呼叫所述VOLTE业务的被叫终端之前，当所述终端还未注册到电路交换域时在电路交换域注册。
可选的，在本发明的一些可能的实施方式中，业务控制单元920在电路交换域注册包括：通过联合附着方式在电路交换域注册，或者通过重选过程驻留到电路交换域并在所述电路交换域注册。
可选的，在本发明的一些可能的实施方式中，业务控制单元920还用于在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述电路交换域的网络信号质量满足语音业务。
可选的，在本发明的一些可能的实施方式中，接收单元在业务控制单元920在电路交换域呼叫所述VOLTE业务的被叫终端之前，接收来自所述长期演进网络的通知消息；所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述终端900用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。例如所述通知消息来自所述长期演进网络的接入网设备。
可以理解，本实施例的终端900(也可称通信终端)的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图10，本发明实施例还提供一种接入网设备1000，可以包括：网络接 口1010、处理器1020和存储器1040等等。
其中，存储器1040可以包括只读存储器和随机存取存储器，并向处理器1020提供指令和数据。此外，存储器1040的一部分还可以包括非易失性随机存取存储器。
处理器1020主要控制接入网设备1000的操作，其中，处理器1020还可以称为中央处理单元(CPU，Central Processing Unit)。存储器1040可以包括只读存储器和随机存取存储器，并向处理器1020提供指令和数据。存储器1040的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中接入网设备1000的各个组件通过总线系统1050耦合在一起，其中总线系统1050除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统1050。
上述本发明实施例揭示的方法可以应用于处理器1020中，或者由处理器1020实现。处理器1020可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1020中的硬件的集成逻辑电路或者软件形式的指令完成。其中，上述的处理器1020可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。其中，该存储介质位于存储器1040，例如处理器1020可读取存储器1040中的信息，结合其硬件完成上述方法的步骤。
其中，网络接口1010，用于接收来自核心网设备的VOLTE业务的承载建立请求消息。
处理器1020，用于若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
可选的，在本发明的一些可能的实施方式中，所述处理器具体用于，若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，通过所述网络接口向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
可选的，在本发明的一些可能的实施方式中，所述处理器具体用于，若确定所述VOLTE业务的终端的LTE网络信号质量不能满足所述VOLTE业务，通过所述网络接口向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述处理器基于所述VOLTE业务的终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述处理器1020还用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，通过所述网络接口向所述终端发送第一测量控制指令；通过所述网络接口接收所述终端响应所述第一测量控制指令而发送的第一测量报告，所述第一测量报告携带有所述终端的LTE网络下行信号质量参数。
可选的，在本发明的一些可能的实施方式中，所述终端为所述VOLTE业务的主叫终端或被叫终端。
可选的，在本发明的一些可能的实施方式中，所述VOLTE业务的承载为 QCI＝1的承载。
可选的，在本发明的一些可能的实施方式中，所述处理器还用于在拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，所述网络接口还用于接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述处理器基于所述通知消息确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，所述处理器还用于，接收来自核心网设备的VOLTE业务的承载建立请求消息之后，在拒绝所述承载建立请求消息之前，确定所述终端的2G/3G网络信号质量满足语音业务。
可选的，在本发明的一些可能的实施方式中，所述网络接口还用于在接收来自核心网设备的VOLTE业务的承载建立请求消息之后，向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
可以理解，本实施例的接入网设备1000的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可以参照上述方法实施例的相关描述，此处不再赘述。
参见图11，本发明实施例还提供一种终端1100，可包括接收器1110、发射器1130(可选的)、处理器1120和存储器1140等等。
其中，存储器1140可以包括只读存储器和随机存取存储器，并向处理器1120提供指令和数据。此外，存储器1140的一部分还可以包括非易失性随机存取存储器。
处理器1120主要控制接入网设备1100的操作，其中，处理器1120还可以称为中央处理单元(CPU，Central Processing Unit)。存储器1140可以包括只读存储器和随机存取存储器，并向处理器1120提供指令和数据。存储器1140的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中终端1100的各个组件通过总线系统1150耦合在一起，其中总线系统1150除包括数据总线 之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统1150。
上述本发明实施例揭示的方法可以应用于处理器1120中，或者由处理器1120实现。处理器1120可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1120中的硬件的集成逻辑电路或者软件形式的指令完成。其中，上述的处理器1120可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。其中，该存储介质位于存储器1140，例如处理器1120可读取存储器1140中的信息，结合其硬件完成上述方法的步骤。
其中，接收器1110，用于接收来自IMS网络的VOLTE业务的呼叫请求消息。
处理器1120，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
可选的，在本发明的一些可能的实施方式中，所述终端1100还包括发射器1130，所述处理器1120具体用于，通过所述发射器1130向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
可选的，在本发明的一些可能的实施方式中，所述处理器基于所述终端的LTE网络上行信号质量参数和/或LTE网络下行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的LTE网络上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述呼叫请求消息为邀请invite消息。
可选的，在本发明的一些可能的实施方式中，所述响应消息为临时失效响应消息。
可以理解，本实施例终端1100(也可称通信终端)的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可参照上述方法实施例的相关描述，此处不再赘述。
参见图12，本发明实施例还提供一种终端1200，可以包括：
网络接口1210、用户接口1230、处理器1220和存储器1240等等。
用户接口1230例如可以是鼠标、按键、触摸屏等器件。
其中，存储器1240可以包括只读存储器和随机存取存储器，并向处理器1220提供指令和数据。此外，存储器1240的一部分还可以包括非易失性随机存取存储器。
处理器1220主要控制接入网设备1200的操作，其中，处理器1220还可以称为中央处理单元(CPU，Central Processing Unit)。存储器1240可以包括只读存储器和随机存取存储器，并向处理器1220提供指令和数据。存储器1240的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中终端1200的各个组件通过总线系统1250耦合在一起，其中总线系统1250除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统1250。
上述本发明实施例揭示的方法可以应用于处理器1220中，或者由处理器1220实现。处理器1220可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器1220中的硬件的集成逻辑电路或者软件形式的指令完成。其中，上述的处理器1220可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或 者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。其中，该存储介质位于存储器1240，例如处理器1220可读取存储器1240中的信息，结合其硬件完成上述方法的步骤。
其中，用户接口1230，用于接收指示建立VOLTE业务的用户指令。
其中，处理器1220，用于若确定所述终端的LTE网络信号质量不能满足所述VOLTE业务，(通过网络接口1210)在电路交换域发起呼叫所述VOLTE业务的被叫终端。
具体例如，处理器1220，用于在确定所述终端的LTE网络信号质量不能满足所述VOLTE业务的情况下先(通过网络接口1210)发起CSFB流程以回退到电路交换域，而后(通过网络接口1210)在电路交换域发起呼叫所述VOLTE业务的被叫终端。
可选的，在本发明的一些可能的实施方式中，所述处理器基于所述终端的LTE网络上行信号质量参数和/或LTE网络上行信号质量参数确定所述终端的LTE网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络上行信号质量参数包括：所述终端的LTE网络上行信号强度、所述终端的LTE网络上行信号信噪比、所述终端的上行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，所述终端的LTE网络下行信号质量参数包括：所述终端的LTE网络下行信号强度、所述终端的LTE网络下行信号信噪比、所述终端的LTE网络下行丢包率中的至少一种。
可选的，在本发明的一些可能的实施方式中，
所述处理器1220还用于，在接收指示建立VOLTE业务的用户指令之后，对LTE网络下行信号质量进行测量，以得到所述终端1200的LTE网络下行信号 质量参数。
可选的，在本发明的一些可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述终端已注册到电路交换域。
可选的，在本发明的一些可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，在所述终端还未注册到电路交换域的情况下在电路交换域注册。
可选的，在本发明的一些可能的实施方式中，所述终端在电路交换域注册包括：所述终端通过联合附着方式在电路交换域注册，或者所述终端通过重选过程驻留到电路交换域并在所述电路交换域注册。
可选的，在本发明的一些可能的实施方式中，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述电路交换域的网络信号质量满足语音业务。
可选的，在本发明的一些可能的实施方式中，所述终端还包括网络接口，其中，所述网络接口，用于所述处理器在电路交换域呼叫所述VOLTE业务的被叫终端之前，接收来自所述长期演进网络的通知消息，所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述处理器用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
可选的，在本发明的一些可能的实施方式中，所述通知消息来自所述长期演进网络的接入网设备。
可以理解，本实施例终端1200(也可称通信终端)的各功能模块的功能可根据上述方法实施例中的方法具体实现，其具体实现过程可参照上述方法实施例的相关描述，此处不再赘述。
参见图13、本发明实施例还提供一种通信系统，包括：
核心网设备1310和接入网设备1320，其中，所述接入网设备1320可为本发明实施例提供的任意一种接入网设备。
参见图14、本发明实施例提供一种核心网设备1400，包括：
网络接口1410、存储器1440和处理器1420。
其中，存储器1440可以包括只读存储器和随机存取存储器，并向处理器1420提供指令和数据。此外，存储器1440的一部分还可以包括非易失性随机存取存储器。
处理器1420主要控制接入网设备1400的操作，其中，处理器1420还可以称为中央处理单元(CPU，Central Processing Unit)。存储器1440可以包括只读存储器和随机存取存储器，并向处理器1420提供指令和数据。存储器1440的一部分还可以包括非易失性随机存取存储器(NVRAM)。具体的应用中核心网设备1400的各个组件通过总线系统1450耦合在一起，其中总线系统1450除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统1450。
其中，处理器1420例如可用于生成通知消息。
其中，所述网络接口1410用于，向接入网设备发送VOLTE业务的承载建立请求消息；向所述接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；其中，所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
其中，核心网设备例如可以是MME，接入网设备例如可以是eNB。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本发明并不受所描述的动作顺序的限制，因为依据本发明，某些步骤可能可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本发明所必须的。
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，可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，例如上述单 元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各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。
上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，可以存储在一个计算机可读取存储介质中。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，该计算机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台计算机设备(可以为个人计算机、服务器或者网络设备等，具体可以是计算机设备中的处理器)执行本发明各个实施例上述方法的全部或部分步骤。其中，而前述的存储介质可包括：U盘、移动硬盘、磁碟、光盘、只读存储器(ROM，Read-Only Memory)或者随机存取存储器(RAM，Random Access Memory)等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，然而本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (67)

  1. 一种业务处理方法，其特征在于，包括：
    接入网设备接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息；
    所述接入网设备若确定所述VOLTE业务的终端的长期演进网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述拒绝所述承载建立请求消息包括：向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，其中，所述响应消息用于所述核心网设备触发所述终端发起电路域回落呼叫。
  3. 根据权利要求2所述的方法，其特征在于，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
  4. 根据权利要求2或3所述的方法，其特征在于，所述向所述核心网设备发送拒绝所述承载建立请求消息的响应消息包括：向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，
    所述接入网设备基于所述VOLTE业务的终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  6. 根据权利要求5所述的方法，其特征在于，所述终端的长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率之中的至少一种。
  7. 根据权利要求5或6所述的方法，其特征在于，所述终端的长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  8. 根据权利要求5至7任一项所述的方法，其特征在于，所述接入网设备接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，所述方法还包括：
    所述接入网设备向所述终端发送第一测量控制指令，所述第一测量控制指令用于指示所述终端测量所述长期演进网络信号质量；所述接入网设备接收所述终端响应所述测量控制指令而发送的第一测量报告，其中，所述第一测量报告携带有所述终端的长期演进网络下行信号质量参数。
  9. 根据权利要求1至8任一项所述的方法，其特征在于，所述终端为所述VOLTE业务的主叫终端或被叫终端。
  10. 根据权利要求1至9任一项所述的方法，其特征在于，所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，在所述拒绝所述承载建立请求消息之前，所述方法还包括：所述接入网设备确定所述终端已注册到电路交换域。
  12. 根据权利要求11所述的方法，其特征在于，所述方法还包括：所述接入网设备接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述接入网设备基于所述通知消息确定所述终端已注册到电路交换域。
  13. 根据权利要求11或12所述的方法，其特征在于，所述接入网设备接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，在所述拒绝所述承载建立请求消息之前，所述方法还包括：所述接入网设备确定所述终端的2G/3G网络信号质量满足语音业务。
  14. 根据权利要求13所述的方法，其特征在于：
    所述接入网设备接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，所述方法还包括：所述接入网设备向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；所述接入网设备接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下 行信号质量参数。
  15. 一种业务处理方法，其特征在于，包括：
    终端接收来自互联网协议多媒体子系统IMS网络的基于长期演进网络的语音VOLTE业务的呼叫请求消息；
    所述终端若确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
  16. 根据权利要求15所述的方法，其特征在于，
    所述拒绝所述呼叫请求消息包括：所述终端向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起电路域回落呼叫。
  17. 根据权利要求15或16所述的方法，其特征在于，所述终端基于所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  18. 根据权利要求17所述的方法，其特征在于，所述终端的长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率中的至少一种。
  19. 根据权利要求17或18所述的方法，其特征在于，所述终端的长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  20. 根据权利要求15到19中任一项所述的方法，其特征在于，所述呼叫请求消息为邀请invite消息。
  21. 根据权利要求20所述的方法，其特征在于，所述响应消息为临时失效响应消息。
  22. 一种业务处理方法，其特征在于，包括：
    终端接收指示建立基于长期演进网络的语音VOLTE业务的用户指令；
    所述终端若确定所述终端的长期演进网络信号质量不能满足所述VOLTE 业务，在电路交换域呼叫所述VOLTE业务的被叫终端。
  23. 根据权利要求22所述的方法，其特征在于，
    所述终端基于所述终端的所述长期演进网络上行信号质量参数和/或所述长期演进网络上行信号质量参数确定所述终端的信号质量不能满足所述VOLTE业务。
  24. 根据权利要求23所述的方法，其特征在于，所述终端的所述长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率中的至少一种。
  25. 根据权利要求22至24任一项所述的方法，其特征在于，所述终端的所述长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  26. 根据权利要求22至25任一项所述的方法，其特征在于，在接收指示建立基于长期演进网络的语音VOLTE业务的用户指令之后，
    所述方法还包括：
    所述终端对所述长期演进网络下行信号质量进行测量，以得到所述终端的所述长期演进网络下行信号质量参数。
  27. 根据权利要求22至26任一项所述的方法，其特征在于，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述终端已注册到电路交换域。
  28. 根据权利要求22至26任一项所述的方法，其特征在于，所述在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：当所述终端还未注册到电路交换域，所述终端在电路交换域注册。
  29. 根据权利要求28所述的方法，其特征还在于，所述终端在电路交换域注册包括：所述终端通过联合附着方式在电路交换域注册，或者所述终端通过重选过程驻留到电路交换域并在所述电路交换域注册。
  30. 根据权利要求27至29任一项所述的方法，其特征在于，在电路交换域 呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：所述终端确定所述电路交换域的网络信号质量满足语音业务。
  31. 根据权利要求22至30任一项所述的方法，其特征在于，所述终端若确定所述终端的信号质量不能满足所述VOLTE业务，在电路交换域呼叫所述VOLTE业务的被叫终端之前，所述方法还包括：
    所述终端接收来自所述长期演进网络的通知消息；所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述终端用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  32. 根据权利要求31所述的方法，其特征在于，所述通知消息来自所述长期演进网络的接入网设备。
  33. 一种业务处理方法，其特征在于，包括：
    长期演进网络的核心网设备向长期演进网络的接入网设备发送基于长期演进网络的语音VOLTE业务的承载建立请求消息；
    所述核心网设备向所述接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
  34. 一种接入网设备，其特征在于，包括：
    网络接口，用于接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息；
    处理器，用于若确定所述VOLTE业务的终端的长期演进网络信号质量不能满足所述VOLTE业务，拒绝所述承载建立请求消息。
  35. 根据权利要求34所述的接入网设备，其特征在于，
    所述处理器具体用于，若确定所述VOLTE业务的终端的长期演进网络信号质量不能满足所述VOLTE业务，通过所述网络接口向所述核心网设备发送拒绝所述承载建立请求消息的响应消息，其中，所述响应消息用于所述核心网 设备触发所述终端发起电路域回落呼叫。
  36. 根据权利要求35所述的接入网设备，其特征在于，所述响应消息携带所述VOLTE业务的承载建立失败的原因值。
  37. 根据权利要求35或36所述的接入网设备，其特征在于，
    所述处理器具体用于，若确定所述VOLTE业务的终端的长期演进网络信号质量不能满足所述VOLTE业务，通过所述网络接口向移动管理网元MME发送所述承载建立请求消息的响应消息，所述响应消息使得互联网协议多媒体子系统IMS触发所述终端发起电路域回落呼叫。
  38. 根据权利要求34至37任一项所述的接入网设备，其特征在于，所述处理器基于所述VOLTE业务的终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  39. 根据权利要求38所述的接入网设备，其特征在于，
    所述终端的长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率中的至少一种。
  40. 根据权利要求38或39所述的接入网设备，其特征在于，
    所述终端的长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  41. 根据权利要求38或40任一项所述的接入网设备，其特征在于，
    所述处理器还用于，在接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，通过所述网络接口向所述终端发送第一测量控制指令；通过所述网络接口接收所述终端响应所述第一测量控制指令而发送的第一测量报告，所述第一测量报告携带有所述终端的长期演进网络下行信号质量参数。
  42. 根据权利要求34至41任一项所述的接入网设备，其特征在于，所述终端为所述VOLTE业务的主叫终端或被叫终端。
  43. 根据权利要求34至42任一项所述的接入网设备，其特征在于，所述VOLTE业务的承载为服务质量等级标识QCI＝1的承载。
  44. 根据权利要求34至43任一项所述的接入网设备，其特征在于，所述处理器还用于，在拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
  45. 根据权利要求44所述的接入网设备，其特征在于，所述网络接口还用于接收来自所述核心网设备的通知消息,所述通知消息携带用于指示所述终端已注册到电路交换域的指示信息；其中，所述处理器基于所述通知消息确定所述终端已注册到电路交换域。
  46. 根据权利要求44或45所述的接入网设备，其特征在于，所述处理器还用于，接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，在拒绝所述承载建立请求消息之前，确定所述终端的2G/3G网络信号质量满足语音业务。
  47. 根据权利要求46所述的接入网设备，其特征在于：所述网络接口还用于在接收来自核心网设备的基于长期演进网络的语音VOLTE业务的承载建立请求消息之后，向所述终端发送第二测量控制指令，所述第二测量控制指令用于指示所述终端测量2G/3G网络信号质量；接收所述终端响应所述第二测量控制指令而发送的第二测量报告，其中，所述第二测量报告携带所述终端的2G/3G网络的下行信号质量参数。
  48. 一种终端，其特征在于，包括：
    接收器，用于接收来自互联网协议多媒体子系统IMS网络的基于长期演进网络的语音VOLTE业务的呼叫请求消息；
    处理器，用于若确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务，拒绝所述呼叫请求消息。
  49. 根据权利要求48所述的终端，其特征在于，
    所述终端还包括发射器，
    所述处理器具体用于，通过所述发射器向所述IMS网络发送用于拒绝所述呼叫请求消息的响应消息，所述响应消息用于所述IMS网络触发所述终端发起 电路域回落呼叫。
  50. 根据权利要求48或49所述的终端，其特征在于，所述处理器基于所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  51. 根据权利要求50所述的终端，其特征在于，所述终端的长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率中的至少一种。
  52. 根据权利要求50或51所述的终端，其特征在于，所述终端的长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  53. 根据权利要求48至52任一项所述的终端，其特征在于，所述呼叫请求消息为邀请invite消息。
  54. 根据权利要求53所述的终端，其特征在于，所述响应消息为临时失效响应消息。
  55. 一种终端，其特征在于，包括：
    用户接口，用于接收指示建立基于长期演进网络的语音VOLTE业务的用户指令；
    处理器，用于若确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务，在电路交换域发起呼叫所述VOLTE业务的被叫终端。
  56. 根据权利要求55所述的终端，其特征在于，所述处理器基于所述终端的长期演进网络上行信号质量参数和/或长期演进网络上行信号质量参数确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  57. 根据权利要求56述的终端，其特征在于，所述终端的长期演进网络上行信号质量参数包括：所述终端的长期演进网络上行信号强度、所述终端的长期演进网络上行信号信噪比、所述终端的长期演进网络上行丢包率中的至少一种。
  58. 根据权利要求56或57所述的终端，其特征在于，所述终端的长期演进网络下行信号质量参数包括：所述终端的长期演进网络下行信号强度、所述终端的长期演进网络下行信号信噪比、所述终端的长期演进网络下行丢包率中的至少一种。
  59. 根据权利要求56至58任一种所述的终端，其特征在于，
    所述处理器还用于，在接收指示建立基于长期演进网络的语音VOLTE业务的用户指令之后，对长期演进网络下行信号质量进行测量，以得到所述终端的长期演进网络下行信号质量参数。
  60. 根据权利要求55至59任一项所述的终端，其特征在于，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述终端已注册到电路交换域。
  61. 根据权利要求55至59任一项所述的终端，其特征在于，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，在所述终端还未注册到电路交换域的情况下在电路交换域注册。
  62. 根据权利要求61所述的终端，其特征还在于，所述处理器在电路交换域注册包括：通过联合附着方式在电路交换域注册，或者通过重选过程驻留到电路交换域并在所述电路交换域注册。
  63. 根据权利要求60至62任一项所述的终端，其特征在于，所述处理器还用于，在电路交换域呼叫所述VOLTE业务的被叫终端之前，确定所述电路交换域的网络信号质量满足语音业务。
  64. 根据权利要求55至63任一项所述的终端，其特征在于，所述终端还包括网络接口，其中，所述网络接口，用于所述处理器在电路交换域呼叫所述VOLTE业务的被叫终端之前，接收来自所述长期演进网络的通知消息，所述通知消息携带所述终端的长期演进网络上行信号质量参数和/或长期演进网络下行信号质量参数，其中，所述通知消息被所述处理器用于确定所述终端的长期演进网络信号质量不能满足所述VOLTE业务。
  65. 根据权利要求64所述的终端，其特征在于，所述通知消息来自所述长期演进网络的接入网设备。
  66. 一种核心网设备，其特征在于，包括：
    网络接口和处理器，
    其中，所述网络接口用于，向接入网设备发送基于长期演进网络的语音VOLTE业务的承载建立请求消息；向所述接入网设备发送通知消息，所述通知消息携带有用于指示所述VOLTE业务的终端已注册到了电路交换域的指示信息；其中，所述通知消息被所述接入网设备用于当确定所述VOLTE业务的终端的信号质量不能满足所述VOLTE业务的情况下拒绝所述承载建立请求消息之前，确定所述终端已注册到电路交换域。
  67. 一种通信系统，其特征在于，包括：
    核心网设备和接入网设备，其中，所述接入网设备为如权利要求34至47任一项所述的接入网设备。
PCT/CN2015/094597 2015-09-15 2015-11-13 业务处理方法、业务处理装置和通信系统 Ceased WO2017045259A1 (zh)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP15901179.0A EP3174356B1 (en) 2015-09-15 2015-11-13 Service processing method and corresponding communication system for providing voice service
RU2018113441A RU2689188C1 (ru) 2015-09-15 2015-11-13 Способ обработки услуги, устройство обработки услуги и система связи
KR1020187010079A KR102043254B1 (ko) 2015-09-15 2015-11-13 서비스 처리 방법, 서비스 처리 장치 및 통신 시스템
JP2018513756A JP6771547B2 (ja) 2015-09-15 2015-11-13 サービス処理方法、サービス処理装置、および通信システム
EP20175303.5A EP3790309B1 (en) 2015-09-15 2015-11-13 Service processing method, service processing access network device, computer readable storage medium and communications system for volte service processing
BR112018005042-3A BR112018005042B1 (pt) 2015-09-15 2015-11-13 Método de processamento de serviço, aparelho de processamento de serviço, e sistema de comunicações
MYPI2018701024A MY201299A (en) 2015-09-15 2015-11-13 Service processing method, service processing apparatus, and communications system
KR1020197032732A KR102106044B1 (ko) 2015-09-15 2015-11-13 서비스 처리 방법, 서비스 처리 장치 및 통신 시스템
CN201580083147.4A CN108029036B (zh) 2015-09-15 2015-11-13 业务处理方法、业务处理装置和通信系统
US15/441,440 US10694571B2 (en) 2015-09-15 2017-02-24 Service processing method and service processing apparatus
US16/867,892 US11497076B2 (en) 2015-09-15 2020-05-06 Service processing method and service processing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2015/089664 2015-09-15
CN2015089664 2015-09-15

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/441,440 Continuation US10694571B2 (en) 2015-09-15 2017-02-24 Service processing method and service processing apparatus

Publications (1)

Publication Number Publication Date
WO2017045259A1 true WO2017045259A1 (zh) 2017-03-23

Family

ID=58288015

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/094597 Ceased WO2017045259A1 (zh) 2015-09-15 2015-11-13 业务处理方法、业务处理装置和通信系统

Country Status (10)

Country Link
US (2) US10694571B2 (zh)
EP (2) EP3790309B1 (zh)
JP (1) JP6771547B2 (zh)
KR (2) KR102106044B1 (zh)
CN (1) CN108029036B (zh)
BR (1) BR112018005042B1 (zh)
ES (1) ES2913928T3 (zh)
MY (1) MY201299A (zh)
RU (1) RU2689188C1 (zh)
WO (1) WO2017045259A1 (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019029228A1 (zh) * 2017-08-11 2019-02-14 中兴通讯股份有限公司 语音业务的处理方法及装置、存储介质
CN109462863A (zh) * 2018-11-22 2019-03-12 中国联合网络通信集团有限公司 一种语音被叫的方法和设备
CN113038502A (zh) * 2019-12-24 2021-06-25 大唐移动通信设备有限公司 一种volte语音业务的优化方法及装置
WO2022002152A1 (zh) * 2020-07-03 2022-01-06 维沃移动通信有限公司 起呼异常处理方法及装置
US11265946B2 (en) 2017-09-28 2022-03-01 Samsung Electronics Co., Ltd. Method and device for network access
WO2022110207A1 (zh) * 2020-11-30 2022-06-02 北京小米移动软件有限公司 发起业务的方法、装置、通信设备及存储介质
CN117835172A (zh) * 2024-03-05 2024-04-05 荣耀终端有限公司 通信方法、设备及计算机可读存储介质

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102106044B1 (ko) * 2015-09-15 2020-04-29 후아웨이 테크놀러지 컴퍼니 리미티드 서비스 처리 방법, 서비스 처리 장치 및 통신 시스템
CN106059998B (zh) * 2016-05-04 2019-03-12 深圳市万普拉斯科技有限公司 注册VoLTE网络的方法、装置和终端
WO2018178241A1 (en) * 2017-03-31 2018-10-04 British Telecommunications Public Limited Company Access network selection
US10574830B2 (en) * 2017-06-05 2020-02-25 Qualcomm Incoporated Methods for increasing VoIP network coverage
US10869353B2 (en) 2017-07-23 2020-12-15 Lg Electronics Inc. Method and apparatus for modifying radio bearer in CU-DU split scenario
US11522923B2 (en) * 2018-09-20 2022-12-06 Telefonaktiebolaget Lm Ericsson (Publ) Method for enabling a calling User Equipment, UE, to retry a Session Initiation Protocol, SIP, call attempt to a called UE, over a Circuit Switched domain
US11509772B2 (en) 2018-11-13 2022-11-22 Qualcomm Incorporated Methods for increasing Voice-over-Internet Protocol (VoIP) network coverage
CN111278164A (zh) * 2018-12-04 2020-06-12 中国移动通信集团安徽有限公司 语音业务迁移方法、装置、设备及介质
US10750388B2 (en) * 2018-12-19 2020-08-18 Verizon Patent And Licensing Inc. System and method for qualifying service in multi-spectrum access network
US11050796B2 (en) * 2019-01-18 2021-06-29 T-Mobile Usa, Inc. Interface session discovery within wireless communication networks
CN112738854B (zh) * 2019-10-14 2021-11-12 大唐移动通信设备有限公司 一种语音切换方法及装置
CN113382483B (zh) * 2020-03-09 2023-04-11 中国移动通信集团设计院有限公司 一种呼叫建立方法、基站及网络设备
CN113395784B (zh) * 2020-03-11 2022-10-14 中国移动通信集团设计院有限公司 一种建立Qci2视频专用承载的方法及装置
CN114125993A (zh) * 2020-08-31 2022-03-01 中国电信股份有限公司 呼叫接入处理方法、网元以及通信系统、存储介质
EP4218313B1 (en) * 2020-09-30 2025-08-27 Innopeak Technology, Inc. Apparatus and method of a mobile terminating user equipment connecting to a fallback network
EP4025004B1 (en) * 2020-12-30 2024-10-02 Advanced Digital Broadcast S.A. A method for establishing communication in a wireless network, and corresponding wireless communication system
CN113038523B (zh) * 2021-05-07 2022-11-01 中国联合网络通信集团有限公司 终端识别方法和装置
CN113438698B (zh) * 2021-06-28 2022-09-09 中国电信股份有限公司 呼叫路由方法、装置、介质及电子设备
CN116600353B (zh) * 2022-02-07 2026-02-24 中国移动通信集团浙江有限公司 语音通话优化方法、装置、设备及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104427524A (zh) * 2013-08-19 2015-03-18 中兴通讯股份有限公司 一种语音业务实现方法及装置
WO2015058393A1 (zh) * 2013-10-25 2015-04-30 华为技术有限公司 一种通信方法、设备及系统

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718081A (en) * 1986-11-13 1988-01-05 General Electric Company Method and apparatus for reducing handoff errors in a cellular radio telephone communications system
US7042858B1 (en) * 2002-03-22 2006-05-09 Jianglei Ma Soft handoff for OFDM
CN101651889B (zh) * 2008-08-14 2011-12-21 华为技术有限公司 呼叫释放方法及装置
CN101795442A (zh) * 2009-02-02 2010-08-04 三星电子株式会社 移动通信系统中承载建立的方法
US10893556B2 (en) * 2009-04-30 2021-01-12 Samsung Electronics Co., Ltd Method and apparatus for supporting local IP access in a femto cell of a wireless communication system
CN102783217A (zh) * 2009-06-03 2012-11-14 捷讯研究有限公司 演进分组系统中的语音服务
US9357568B2 (en) * 2009-06-16 2016-05-31 Futurewei Technologies, Inc. System and method for adapting an application source rate to a load condition
WO2011008566A2 (en) * 2009-06-29 2011-01-20 Research In Motion Limited System and method for voice service in an evolved packet system
US9729351B2 (en) * 2009-08-10 2017-08-08 Qualcomm Incorporated Identifying a domain for delivery of message service information
US20110263260A1 (en) * 2009-10-22 2011-10-27 Qualcomm Incorporated Determining cell reselection parameter for transmission by access point
JP5646647B2 (ja) * 2009-12-17 2014-12-24 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 通信ネットワークで用いる方法および装置
GB2484534B (en) * 2010-10-15 2014-04-09 Fujitsu Ltd Cell edge coverage hole detection in cellular wireless networks
US20120115463A1 (en) * 2010-11-10 2012-05-10 Research In Motion Limited Method and device for improved user equipment measurements and reporting
US8520544B2 (en) * 2010-12-27 2013-08-27 Verizon Patent And Licensing Inc. Intelligent reduction of interference to public safety wireless networks
WO2012115995A1 (en) * 2011-02-24 2012-08-30 Interdigital Patent Holdings, Inc. Methods and apparatuses for handling location registration updates while a backoff timer is running
US9042888B2 (en) * 2011-12-05 2015-05-26 Apple Inc. Mobile device network signaling management
JP5993572B2 (ja) * 2011-12-09 2016-09-14 株式会社Ｎｔｔドコモ 無線基地局及び無線システム間遷移制御方法
CN104067667A (zh) * 2012-01-23 2014-09-24 英特尔公司 用于集成的多rat异类网络的网络辅助的用户关联和卸载技术
TWI484853B (zh) * 2012-03-14 2015-05-11 Inst Information Industry 通訊系統及其通訊方法
US8971894B2 (en) * 2012-06-22 2015-03-03 Apple Inc. Network reselection by a wireless communication device based on signal-to-noise ratio
US20140011492A1 (en) * 2012-07-05 2014-01-09 Qualcomm Incorporated Operator preferences for packet switched services on lte
KR101445681B1 (ko) * 2012-08-10 2014-09-29 에스케이텔레콤 주식회사 이기종 망에서의 호 처리 장치 및 방법
KR20140035785A (ko) * 2012-09-14 2014-03-24 삼성전자주식회사 무선 통신 시스템에서 망 혼잡상황에서 특정 서비스를 제어하는 방법 및 장치
EP2918135A1 (en) * 2012-10-26 2015-09-16 Interdigital Patent Holdings, Inc. Systems and/or methods for improving packet-switched services during circuit switched fallback (csfb)
RU2616169C2 (ru) * 2012-11-16 2017-04-12 Нек Корпорейшн Сетевая система, способ, устройство и программа
BR112015019292A2 (pt) * 2013-02-12 2017-07-18 Ericsson Telefon Ab L M estados de chamada de sincronização de componente de rede e dispositivo móvel em transferência de sessão
US8989124B1 (en) * 2013-03-08 2015-03-24 Sprint Spectrum L.P. Management of bearers in a cellular wireless communication system
KR102121970B1 (ko) * 2013-08-20 2020-06-12 에스케이텔레콤 주식회사 호 처리 방법 및 장치
SG11201603443TA (en) * 2013-10-30 2016-05-30 Interdigital Patent Holdings Systems and methods for handling priority services congestion
CN103634855B (zh) * 2013-10-30 2015-07-08 酷派软件技术（深圳）有限公司 终端接入lte网络的方法和终端
EP3066868B1 (en) * 2013-11-07 2019-09-11 Telefonaktiebolaget LM Ericsson (publ) Measurements on lte for csfb rat prioritization
WO2015069076A1 (ko) * 2013-11-08 2015-05-14 삼성전자 주식회사 패킷망을 통한 응급 콜 서비스를 지속적으로 제공하기 위한 방법
US9408067B1 (en) * 2013-12-02 2016-08-02 Taqua, Llc Selectively disallowing use of media over data calling in a segment based on segment characteristics
CN105917702B (zh) * 2014-01-14 2020-03-03 Lg电子株式会社 无线通信系统中用于双连接的路径切换方法及其装置
CN112911726B (zh) * 2014-06-19 2023-04-07 北京三星通信技术研究有限公司 一种用户平面承载建立的方法及装置
US20160134316A1 (en) * 2014-11-12 2016-05-12 Qualcomm Incorporated System and Methods for Enabling MIMO Operation During Inactive SIM State on a Multi-SIM Wireless Communication Device
CN104507131B (zh) * 2015-01-04 2018-02-23 中国联合网络通信集团有限公司 VoLTE终端语音业务方案确定方法和VoLTE终端
US10440626B2 (en) * 2015-03-20 2019-10-08 Parallel Wireless, Inc. Content-aware inter-RAT RAB steering
KR102106044B1 (ko) * 2015-09-15 2020-04-29 후아웨이 테크놀러지 컴퍼니 리미티드 서비스 처리 방법, 서비스 처리 장치 및 통신 시스템
WO2017075814A1 (zh) * 2015-11-06 2017-05-11 华为技术有限公司 一种语音漫游方法，移动性管理网元及接入网网元

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104427524A (zh) * 2013-08-19 2015-03-18 中兴通讯股份有限公司 一种语音业务实现方法及装置
WO2015058393A1 (zh) * 2013-10-25 2015-04-30 华为技术有限公司 一种通信方法、设备及系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3174356A4 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109392010A (zh) * 2017-08-11 2019-02-26 中兴通讯股份有限公司 语音业务的处理方法及装置
WO2019029228A1 (zh) * 2017-08-11 2019-02-14 中兴通讯股份有限公司 语音业务的处理方法及装置、存储介质
US12302433B2 (en) 2017-09-28 2025-05-13 Samsung Electronics Co., Ltd. Method and device for network access
US11265946B2 (en) 2017-09-28 2022-03-01 Samsung Electronics Co., Ltd. Method and device for network access
US12302434B2 (en) 2017-09-28 2025-05-13 Samsung Electronics Co., Ltd. Method and device for network access
US11856629B2 (en) 2017-09-28 2023-12-26 Samsung Electronics Co., Ltd. Method and device for network access
CN109462863B (zh) * 2018-11-22 2022-07-12 中国联合网络通信集团有限公司 一种语音被叫的方法和设备
CN109462863A (zh) * 2018-11-22 2019-03-12 中国联合网络通信集团有限公司 一种语音被叫的方法和设备
CN113038502A (zh) * 2019-12-24 2021-06-25 大唐移动通信设备有限公司 一种volte语音业务的优化方法及装置
CN113038502B (zh) * 2019-12-24 2022-05-13 大唐移动通信设备有限公司 一种volte语音业务的优化方法及装置
WO2022002152A1 (zh) * 2020-07-03 2022-01-06 维沃移动通信有限公司 起呼异常处理方法及装置
WO2022110207A1 (zh) * 2020-11-30 2022-06-02 北京小米移动软件有限公司 发起业务的方法、装置、通信设备及存储介质
CN117835172A (zh) * 2024-03-05 2024-04-05 荣耀终端有限公司 通信方法、设备及计算机可读存储介质

Also Published As

Publication number Publication date
JP2018527844A (ja) 2018-09-20
KR20180050404A (ko) 2018-05-14
US10694571B2 (en) 2020-06-23
US20170171904A1 (en) 2017-06-15
KR102106044B1 (ko) 2020-04-29
US11497076B2 (en) 2022-11-08
MY201299A (en) 2024-02-15
ES2913928T3 (es) 2022-06-06
BR112018005042B1 (pt) 2024-03-05
RU2689188C1 (ru) 2019-05-24
CN108029036B (zh) 2021-07-16
US20200267792A1 (en) 2020-08-20
EP3174356A1 (en) 2017-05-31
EP3790309B1 (en) 2022-04-06
JP6771547B2 (ja) 2020-10-21
KR102043254B1 (ko) 2019-11-11
KR20190126946A (ko) 2019-11-12
EP3174356B1 (en) 2020-06-10
CN108029036A (zh) 2018-05-11
EP3174356A4 (en) 2017-11-15
BR112018005042A2 (zh) 2018-10-02
EP3790309A1 (en) 2021-03-10

Similar Documents

Publication Publication Date Title
US11497076B2 (en) Service processing method and service processing apparatus
US9813865B2 (en) Network-initiated control method and apparatus for providing proximity service
US10812534B2 (en) Service processing method and apparatus
US9648653B2 (en) User equipment-initiated control method and apparatus for providing proximity service
US10805975B2 (en) Device-to-device direct communication method in wireless communication system and device therefor
JP6777155B2 (ja) 通信システム用の通信装置、及び方法
US20160021580A1 (en) Telecommunication Equipment Measuring Pre-Establishment Service Interruptions
EP2975882B1 (en) Method and apparatus for changing proximity service-based radio access technology
CN110719613A (zh) 一种建立语音业务的方法及装置
US20150208281A1 (en) Method and device for supporting sipto for each ip flow in local network
US10306520B2 (en) Handover method between heterogeneous wireless communication techniques and device for same
US10542575B1 (en) Controlling initiation of dedicated bearer setup following failed dedicated bearer setup
CN110915291B (zh) 语音会话建立方法、装置、设备及存储介质
KR101558230B1 (ko) 패킷 스위칭된 도메인으로부터 서킷 스위칭된 도메인으로 호 핸드오버 방법 및 장치
CN109964505B (zh) 一种创建语音承载的方法和装置
KR102076766B1 (ko) 단말 활성화 유지 방법 및 장치
KR20150025890A (ko) 이동통신망에서의 핸드오버 제어 방법 및 그 장치
KR20140045670A (ko) 호 처리에 대한 이벤트 정보 제공 장치 및 방법
KR20150025893A (ko) 위치정보 갱신 방법 및 장치

Legal Events

Date Code Title Description
REEP Request for entry into the european phase

Ref document number: 2015901179

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015901179

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15901179

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018513756

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112018005042

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20187010079

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2018113441

Country of ref document: RU

ENP Entry into the national phase

Ref document number: 112018005042

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20180314