CN105636130B - Method and system, server and the mobile terminal that voice call is fallen after rise - Google Patents

Method and system, server and the mobile terminal that voice call is fallen after rise Download PDF

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Publication number
CN105636130B
CN105636130B CN201510218934.7A CN201510218934A CN105636130B CN 105636130 B CN105636130 B CN 105636130B CN 201510218934 A CN201510218934 A CN 201510218934A CN 105636130 B CN105636130 B CN 105636130B
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mobile terminal
voice call
service
management entity
cscf server
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CN105636130A (en
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张志刚
黄伟
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Nanjing Coolpad Software Technology Co Ltd
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Nanjing Coolpad Software Technology Co Ltd
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Priority to PCT/CN2015/082966 priority patent/WO2016173117A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology

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

Abstract

The system that method, a kind of CSCF server, a kind of mobile terminal, a kind of mobile management entity and a kind of voice call fallen after rise the invention proposes a kind of voice call is fallen after rise, which comprises receive the protocol signaling of the initiation VoLTE voice service from mobile terminal；Determine whether that the mobile management entity of mobile terminal sends service inquiry instruction according to protocol signaling；The query result from mobile management entity is received, and voice call is sent to mobile terminal according to query result and falls order after rise, so that mobile terminal execution voice call falls operation after rise.According to the technical solution of the present invention, mobile terminal execution voice call can be effectively instructed to fall operation after rise, to ensure the continuity of voice call, and then effectively improve the voice call quality for supporting the mobile terminal of IMS business, user experience is promoted, while realizing the voice communication mode for alloing LTE network to select mobile terminal according to current network state.

Description

Voice call fallback method and system, server and mobile terminal
Technical Field
The invention relates to the technical field of terminals, in particular to a voice call fallback method, a CSCF (call session control function) server, a mobile terminal, a mobile management entity and a voice call fallback system.
Background
Under the conditions that the current LTE (Long Term Evolution) network coverage is incomplete and IMS (IP multimedia Subsystem, Internet Protocol) services are not fully deployed, in order to ensure the reliability of Voice services of mobile terminals, the LTE network provides two technologies, namely CSFB (Circuit Switched Fallback) and SRVCC (Single Radio Voice call continuity).
In The related art, when a mobile terminal or an LTE network cannot support an IMS service, The mobile terminal falls back from The LTE network to 2G (The 2) through a voice call fallback (CSFB) techniquendGeneration Mobile communication technology, 2 nd Generation Mobile communication technology)/3G (The 3)rdGeneration Mobile communication technology, 3 rd Generation Mobile communication technology) circuit domain completes the call service; when the mobile terminal and the LTE network support the IMS service, the mobile terminal can be switched to the 2G/3G network from the LTE network through a dual-mode single-standby wireless voice call continuity (SRVCC) technology, so that the continuity of the telephone call is ensured.
However, whether the CSFB mode or the SRVCC mode is selected requires configuration on the mobile terminal side, which is not favorable for the deployment of IMS services: if The mobile terminal configuration does not support The IMS service, The mobile terminal needs to initiate CSFB through OTA (Over The Air, Over The Air technology applied by mobile terminals such as mobile phones and The like) signaling of The LTE network even in The LTE network where The IMS service is deployed, then, along with The gradual maturity of The IMS service deployment on The network side, a great amount of time and energy are needed for upgrading The mobile terminal to support The IMS service, and The migration of The original 2G/3G network to The LTE network is also influenced; if the mobile terminal supports the IMS service, the mobile terminal and the LTE network do not initiate CSFB, but perform Voice call using VoLTE (Voice Over LTE, IMS-based Voice service) and SRVCC technologies, a large number of call failures and call drops may occur in areas where the LTE network and the IMS service are not well deployed, and the quality of Voice call may not be guaranteed.
Therefore, a new method for falling back is needed to solve the above technical problems.
Disclosure of Invention
Based on the above problems, the present invention provides a new technical solution, which can effectively instruct the mobile terminal to perform a voice call fallback operation to ensure the continuity of the voice call, thereby effectively improving the voice call quality of the mobile terminal supporting the IMS service, improving the user experience, and simultaneously enabling the LTE network to select the voice communication mode of the mobile terminal according to the current network state.
In view of the above, a first aspect of the present invention provides a method for a voice call fallback, which is used for a CSCF server, and includes: receiving a protocol signaling for initiating a VoLTE voice service from a mobile terminal; determining whether to send a service inquiry command to a mobile management entity of the mobile terminal according to the protocol signaling; receiving a query result from the mobile management entity, and sending a voice call fallback command to the mobile terminal according to the query result so that the mobile terminal executes a voice call fallback operation; the protocol signaling comprises a target identifier for marking that the mobile terminal supports the voice call fallback operation under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query.
In the technical solution, whether to send a service query instruction to a mobile management entity is determined according to a Protocol signaling (for example, a Session Initiation Protocol (SIP) Protocol signaling) of a VoLTE voice service initiated by a mobile terminal and including a target identifier, and after the service query instruction is determined to be sent, whether to send a voice call fallback command to the mobile terminal is determined according to a query result from the mobile management entity, so as to determine whether the mobile terminal performs a voice call fallback operation or can perform the VoLTE voice service, that is: the terminal executes corresponding operation, so that the LTE network guides the mobile terminal to execute voice call fallback operation through a protocol (such as an SIP (session initiation protocol), a signaling control protocol and a text-based application layer control protocol, which is used for creating, modifying and releasing the session of one or more participants) by virtue of the cooperation of the CSCF server and the mobile management entity, so as to ensure the continuity of voice calls, further effectively improve the voice call quality of the mobile terminal supporting IMS (IP multimedia subsystem) services, improve user experience and simultaneously realize that the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In the foregoing technical solution, preferably, determining whether to send the service inquiry instruction to the mobility management entity according to the protocol signaling specifically includes: judging whether the CSCF server supports the target identifier or not; and if so, sending the service query instruction to the mobile management entity.
In the technical scheme, after receiving a protocol signaling containing a target identifier, and when determining that the target identifier is supported, a service query instruction is sent to a mobile management entity, that is, an LTE network is allowed to instruct a mobile terminal to initiate a voice call fallback operation through a protocol (for example, an SIP protocol) by modifying a network device CSCF server and the mobile management entity, that is, the LTE network can control the mobile terminal to perform a conventional circuit domain voice service (a voice service after the voice call fallback operation) or a VoLTE voice service according to a network state of the LTE network, so as to ensure voice service quality of the mobile terminal supporting an IMS service.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and according to the query result from the mobile management entity and the target network carried in the voice call drop command sent to the mobile terminal, setting the target network for the mobile terminal to execute the voice call drop, so that the voice call drop of the mobile terminal can be finally realized, the continuity of the voice call is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, and the user experience is improved.
In a second aspect of the present invention, a CSCF server is provided, which includes: the first receiving module is used for receiving a protocol signaling for initiating a VoLTE voice service from a mobile terminal; a determining module, configured to determine whether to send a service query instruction to a mobility management entity of the mobile terminal according to the protocol signaling; the first receiving module is further configured to: receiving a query result from the mobility management entity; the first sending module is used for sending a voice call fallback command to the mobile terminal according to the query result so that the mobile terminal can execute voice call fallback operation; the protocol signaling comprises a target identifier for marking that the mobile terminal supports the voice call fallback operation under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query.
In the technical solution, whether to send a service query instruction to a mobile management entity is determined according to a protocol signaling (for example, SIP protocol signaling) of a VoLTE voice service initiated by a mobile terminal and including a target identifier, and after the service query instruction is determined to be sent, whether to send a voice call fallback command to the mobile terminal is determined according to a query result from the mobile management entity, so as to determine whether the mobile terminal performs a voice call fallback operation or can perform the VoLTE voice service, that is: the mobile terminal executes corresponding operation, so that the LTE network guides the mobile terminal to execute voice call fallback operation through a protocol (such as an SIP protocol) through the cooperation of the CSCF server and the mobile management entity, the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In the foregoing technical solution, preferably, the determining module is specifically configured to: judging whether the CSCF server supports the target identifier or not; the first sending module is further configured to: and if so, sending the service query instruction to the mobile management entity.
In the technical scheme, after receiving a protocol signaling containing a target identifier, and when determining that the target identifier is supported, a service query instruction is sent to a mobile management entity, that is, an LTE network is allowed to instruct a mobile terminal to initiate a voice call fallback operation through a protocol (for example, an SIP protocol) by modifying a network device CSCF server and the mobile management entity, that is, the LTE network can control the mobile terminal to perform a conventional circuit domain voice service (a voice service after the voice call fallback operation) or a VoLTE voice service according to a network state of the LTE network, so as to ensure voice service quality of the mobile terminal supporting an IMS service.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and according to the query result from the mobile management entity and the target network carried in the voice call drop command sent to the mobile terminal, setting the target network for the mobile terminal to execute the voice call drop, so that the voice call drop of the mobile terminal can be finally realized, the continuity of the voice call is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, and the user experience is improved.
In a third aspect of the present invention, a method for a voice call fallback is provided, which is used for a mobile terminal, and includes: adding a target identifier in a protocol signaling, wherein the target identifier is used for marking the voice call fallback operation under the protocol signaling supported by the mobile terminal; sending the protocol signaling to a CSCF server; and receiving a voice call drop command from the CSCF server to execute a voice call drop operation, wherein the voice call drop command comprises a target network of the voice call drop operation.
In the technical scheme, before the protocol signaling is sent to the CSCF server, a target identifier for marking the voice call fallback operation of the mobile terminal under the protocol signaling supported by the mobile terminal is added in the protocol signaling, namely, the protocol is modified, so that necessary precondition guarantee is provided for the LTE network to guide the mobile terminal to execute the voice call fallback operation through the SIP protocol, and the voice call fallback operation is executed according to the target network carried in the voice call fallback command from the CSCF server, so that the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In a fourth aspect of the present invention, a mobile terminal is provided, including: a marking module, configured to add a target identifier in a protocol signaling, where the target identifier is used to mark that the mobile terminal supports the voice call fallback operation under the protocol signaling; the second sending module is used for sending the protocol signaling to the CSCF server; a second receiving module, configured to receive a voice call fallback command from the CSCF server to perform a voice call fallback operation, where the voice call fallback command includes a target network of the voice call fallback operation.
In the technical scheme, before the protocol signaling is sent to the CSCF server, a target identifier for marking the voice call fallback operation of the mobile terminal under the protocol signaling supported by the mobile terminal is added in the protocol signaling, namely, the protocol is modified, so that necessary precondition guarantee is provided for the LTE network to guide the mobile terminal to execute the voice call fallback operation through the SIP protocol, and the voice call fallback operation is executed according to the target network carried in the voice call fallback command from the CSCF server, so that the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In a fifth aspect of the present invention, a method for voice call fallback is provided, where the method is used for a mobile management entity, and includes: receiving a service query instruction from a CSCF server; inquiring the resource state according to the service inquiry instruction; and sending the query result to the CSCF server to determine whether the mobile terminal executes the voice call fallback operation.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and when the query result is fed back to the CSCF server, setting a target network for the mobile terminal to execute the voice call fallback so as to finally realize the voice call fallback of the mobile terminal, ensuring the continuity of the voice call, further effectively improving the voice call quality of the mobile terminal supporting the IMS service, and improving the user experience.
In a sixth aspect of the present invention, a mobility management entity is provided, including: a third receiving module, configured to receive a service query instruction from the CSCF server; the query module is used for querying the resource state according to the service query instruction; and the third sending module is used for sending the query result to the CSCF server so as to determine whether the mobile terminal executes the voice call fallback operation.
In the technical scheme, resource state query is carried out according to a service query instruction from a CSCF server, and a query result is fed back to the CSCF server to determine whether the mobile terminal executes voice call fallback operation or VoLTE voice service can be carried out.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and when the query result is fed back to the CSCF server, setting a target network for the mobile terminal to execute the voice call fallback so as to finally realize the voice call fallback of the mobile terminal, ensuring the continuity of the voice call, further effectively improving the voice call quality of the mobile terminal supporting the IMS service, and improving the user experience.
A seventh aspect of the present invention provides a system for voice call fallback, including: the CSCF server according to any of the above technical solutions, the mobile terminal according to the above technical solutions, and the mobility management entity according to any of the above technical solutions, therefore, the system has the same technical effects as the CSCF server, the mobile terminal, and the mobility management entity according to any of the above technical solutions, and details are not repeated here.
Through the technical scheme of the invention, the mobile terminal can be effectively guided to execute the voice call fallback operation so as to ensure the continuity of the voice call, thereby effectively improving the voice call quality of the mobile terminal supporting the IMS service, improving the user experience and simultaneously realizing that the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
Drawings
FIG. 1 shows a flow diagram of a method of voice telephony fallback according to an embodiment of the present invention;
FIG. 2 illustrates a block diagram of a CSCF server, according to one embodiment of the present invention;
FIG. 3 shows a flow diagram of a method of voice telephony fallback according to another embodiment of the present invention;
FIG. 4 shows a block diagram of a mobile terminal according to one embodiment of the invention;
FIG. 5 shows a flow diagram of a method of voice telephony fallback according to yet another embodiment of the present invention;
fig. 6 shows a block diagram of a mobility management entity according to an embodiment of the invention;
FIG. 7 shows a block diagram of a system for voice call fallback according to an embodiment of the present invention;
fig. 8 shows a flow diagram of a method of voice call fallback according to yet another embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a flow diagram of a method of voice telephony fallback according to an embodiment of the present invention.
As shown in fig. 1, a method for voice call fallback according to an embodiment of the present invention is used for a CSCF server, and includes: 102, receiving a protocol signaling for initiating a VoLTE voice service from a mobile terminal; step 104, determining whether to send a service inquiry command to a mobile management entity of the mobile terminal according to the protocol signaling; step 106, receiving the query result from the mobile management entity, and sending a voice call fallback command to the mobile terminal according to the query result so that the mobile terminal executes a voice call fallback operation; the protocol signaling comprises a target identifier for marking that the mobile terminal supports the voice call fallback operation under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query.
In the technical solution, whether to send a service query instruction to a mobile management entity is determined according to a protocol signaling (for example, SIP protocol signaling) of a VoLTE voice service initiated by a mobile terminal and including a target identifier, and after the service query instruction is determined to be sent, whether to send a voice call fallback command to the mobile terminal is determined according to a query result from the mobile management entity, so as to determine whether the mobile terminal performs a voice call fallback operation or can perform the VoLTE voice service, that is: the terminal executes corresponding operation, so that the LTE network guides the mobile terminal to execute voice call fallback operation through a protocol (such as an SIP protocol) through the cooperation of the CSCF server and the mobile management entity, so as to ensure the continuity of voice calls, further effectively improve the voice call quality of the mobile terminal supporting the IMS service, improve the user experience, and simultaneously realize that the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In the above technical solution, preferably, the step 104 specifically includes: judging whether the CSCF server supports the target identifier or not; and if so, sending the service query instruction to the mobile management entity.
In the technical scheme, after receiving a protocol signaling containing a target identifier, and when determining that the target identifier is supported, a service query instruction is sent to a mobile management entity, that is, an LTE network is allowed to instruct a mobile terminal to initiate a voice call fallback operation through a protocol (for example, an SIP protocol) by modifying a network device CSCF server and the mobile management entity, that is, the LTE network can control the mobile terminal to perform a conventional circuit domain voice service (a voice service after the voice call fallback operation) or a VoLTE voice service according to a network state of the LTE network, so as to ensure voice service quality of the mobile terminal supporting an IMS service.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and according to the query result from the mobile management entity and the target network carried in the voice call drop command sent to the mobile terminal, setting the target network for the mobile terminal to execute the voice call drop, so that the voice call drop of the mobile terminal can be finally realized, the continuity of the voice call is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, and the user experience is improved.
Fig. 2 shows a block diagram of a CSCF server according to one embodiment of the invention.
As shown in fig. 2, the CSCF server 20 according to an embodiment of the present invention includes: a first receiving module 202, configured to receive a protocol signaling for initiating a VoLTE voice service from a mobile terminal; a determining module 204, configured to determine whether to send a service query instruction to a mobility management entity of the mobile terminal according to the protocol signaling; the first receiving module 202 is further configured to: receiving a query result from the mobility management entity; a first sending module 206, configured to send a voice call fallback command to the mobile terminal according to the query result, so that the mobile terminal performs a voice call fallback operation; the protocol signaling comprises a target identifier for marking that the mobile terminal supports the voice call fallback operation under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query.
In the technical solution, whether to send a service query instruction to a mobile management entity is determined according to a protocol signaling (for example, SIP protocol signaling) of a VoLTE voice service initiated by a mobile terminal and including a target identifier, and after the service query instruction is determined to be sent, whether to send a voice call fallback command to the mobile terminal is determined according to a query result from the mobile management entity, so as to determine whether the mobile terminal performs a voice call fallback operation or can perform the VoLTE voice service, that is: the mobile terminal executes corresponding operation, so that the LTE network guides the mobile terminal to execute voice call fallback operation through a protocol (such as an SIP protocol) through the cooperation of the CSCF server and the mobile management entity, the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
In the foregoing technical solution, preferably, the determining module 204 is specifically configured to: judging whether the CSCF server supports the target identifier or not; the first sending module 206 is further configured to: and if so, sending the service query instruction to the mobile management entity.
In the technical scheme, after receiving a protocol signaling containing a target identifier, and when determining that the target identifier is supported, a service query instruction is sent to a mobile management entity, that is, an LTE network is allowed to instruct a mobile terminal to initiate a voice call fallback operation through a protocol (for example, an SIP protocol) by modifying a network device CSCF server and the mobile management entity, that is, the LTE network can control the mobile terminal to perform a conventional circuit domain voice service (a voice service after the voice call fallback operation) or a VoLTE voice service according to a network state of the LTE network, so as to ensure voice service quality of the mobile terminal supporting an IMS service.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and according to the query result from the mobile management entity and the target network carried in the voice call drop command sent to the mobile terminal, setting the target network for the mobile terminal to execute the voice call drop, so that the voice call drop of the mobile terminal can be finally realized, the continuity of the voice call is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, and the user experience is improved.
Fig. 3 shows a flow diagram of a method of voice telephony fallback according to another embodiment of the present invention.
As shown in fig. 3, a voice call fallback method according to another embodiment of the present invention is applied to a mobile terminal, and includes: step 302, adding a target identifier in a protocol signaling, wherein the target identifier is used for marking the voice call fallback operation under the protocol signaling supported by the mobile terminal; step 304, sending the protocol signaling to a CSCF server; step 306, receiving a voice call drop command from the CSCF server to perform a voice call drop operation, where the voice call drop command includes a target network of the voice call drop operation.
In the technical scheme, before the protocol signaling is sent to the CSCF server, a target identifier for marking the voice call fallback operation of the mobile terminal under the protocol signaling supported by the mobile terminal is added in the protocol signaling, namely, the protocol is modified, so that necessary precondition guarantee is provided for the LTE network to guide the mobile terminal to execute the voice call fallback operation through the SIP protocol, and the voice call fallback operation is executed according to the target network carried in the voice call fallback command from the CSCF server, so that the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
Fig. 4 shows a block diagram of a mobile terminal according to an embodiment of the invention.
As shown in fig. 4, a mobile terminal 40 according to an embodiment of the present invention includes: a marking module 402, configured to add a target identifier in a protocol signaling, where the target identifier is used to mark that the mobile terminal supports the voice call fallback operation under the protocol signaling; a second sending module 404, configured to send the protocol signaling to the CSCF server; a second receiving module 406, configured to receive a voice call drop command from the CSCF server to perform a voice call drop operation, where the voice call drop command includes a target network of the voice call drop operation.
In the technical scheme, before the protocol signaling is sent to the CSCF server, a target identifier for marking the voice call fallback operation of the mobile terminal under the protocol signaling supported by the mobile terminal is added in the protocol signaling, namely, the protocol is modified, so that necessary precondition guarantee is provided for the LTE network to guide the mobile terminal to execute the voice call fallback operation through the SIP protocol, and the voice call fallback operation is executed according to the target network carried in the voice call fallback command from the CSCF server, so that the continuity of voice calls is ensured, the voice call quality of the mobile terminal supporting the IMS service is effectively improved, the user experience is improved, and meanwhile, the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
Fig. 5 shows a flow diagram of a method of voice telephony fallback according to a further embodiment of the present invention.
As shown in fig. 5, a voice call fallback method according to still another embodiment of the present invention is applied to a mobile management entity, and includes: step 502, receiving a service query instruction from a CSCF server; step 504, performing resource state query according to the service query instruction; step 506, sending the query result to the CSCF server to determine whether the mobile terminal performs a voice call fallback operation.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and when the query result is fed back to the CSCF server, setting a target network for the mobile terminal to execute the voice call fallback so as to finally realize the voice call fallback of the mobile terminal, ensuring the continuity of the voice call, further effectively improving the voice call quality of the mobile terminal supporting the IMS service, and improving the user experience.
Fig. 6 shows a block diagram of a mobility management entity according to an embodiment of the invention.
As shown in fig. 6, a mobility management entity 60 according to an embodiment of the present invention includes: a third receiving module 602, configured to receive a service query instruction from the CSCF server; a query module 604, configured to perform resource status query according to the service query instruction; a third sending module 606, configured to send the query result to the CSCF server, so as to determine whether the mobile terminal performs a voice call fallback operation.
In the technical scheme, resource state query is carried out according to a service query instruction from a CSCF server, and a query result is fed back to the CSCF server to determine whether the mobile terminal executes voice call fallback operation or VoLTE voice service can be carried out.
In the above technical solution, preferably, the content of the resource status query at least includes one of: the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
In this embodiment, the content of the resource status query includes but is not limited to: the method comprises the following steps that one or a combination of more of a current network (LTE network) deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are adopted, wherein the other network resource states are other networks except the LTE network, such as a 2G network, a 3G network and the like; and when the query result is fed back to the CSCF server, setting a target network for the mobile terminal to execute the voice call fallback so as to finally realize the voice call fallback of the mobile terminal, ensuring the continuity of the voice call, further effectively improving the voice call quality of the mobile terminal supporting the IMS service, and improving the user experience.
Fig. 7 shows a block diagram of a system for voice call fallback according to an embodiment of the present invention.
As shown in fig. 7, a system 70 for voice call fallback according to an embodiment of the present invention includes: the CSCF server 20 according to any of the above technical solutions, the mobile terminal 40 according to the above technical solutions, and the mobility management entity 60 according to any of the above technical solutions, so that the system has the same technical effects as the CSCF server 20, the mobile terminal 40, and the mobility management entity 60 according to any of the above technical solutions, and details are not repeated here.
Fig. 8 shows a flow diagram of a method of voice call fallback according to yet another embodiment of the present invention.
As shown in fig. 8, the process of completing the voice call fallback operation by the mobile terminal and the network device cooperatively using the SIP protocol specifically includes:
(1) the terminal adds a mark (target identification) in a telephone SIP-INVITE message (SIP signaling) for initiating a VoLTE voice service, such as Accept-Contact, and identifies that the mobile terminal supports CSFB operation under the SIP protocol.
(2) If the CSCF processing the SIP-INVITE message supports the identifier at the same time, a service query instruction is first sent to a Mobile Management Entity (MME) managing the mobile terminal to query whether the mobile terminal performs an IMS VoLTE service or needs to execute a CSFB.
(3) The MME determines the current voice service mode of the mobile terminal according to the current network deployment condition (current network deployment state), the service condition of the terminal (VoLTE voice service state of the mobile terminal), the load of an eNB (base station) to which the mobile terminal is attached (load state of the base station to which the mobile terminal belongs), and other network resource states.
(4) If the mode is the CSFB mode, the MME returns a result to the CSCF, carries a destination network (target network) of the mobile terminal fall back, and simultaneously informs the mobile terminal of the destination network of the fall back to prepare circuit resources.
(5) The CSCF returns an SIP-4xx message (a client is in error, which indicates that the request message contains a syntax error or the server cannot complete processing of the request message), which indicates that VoLTE voice service cannot be performed, and the specific reason may be 488-Not accept (which is Not accepted here), and a destination network that the mobile terminal needs to fall back is attached to the message, and in order to achieve this purpose, the SIP protocol needs to correspondingly modify and supplement the destination network field, and the content includes: the type of the destination network (e.g., GSM (Global System For Mobile Communications), WCDMA (Wide Band Code Division Multiple Access), CDMA (Code Division Multiple Access), etc.), the frequency Band and frequency point of the destination network, etc.; the terminal needs to process the destination network field and execute the voice call fallback operation according to the content of the destination network field.
(6) After receiving the SIP-4xx message, the mobile terminal executes CSFB operation according to the mobile terminal falling back destination network information, and performs voice telephone service in the destination network circuit domain.
In the above (3), if the MME finds that the LTE network cell to which the current mobile terminal is attached can support the IMS service, the CSCF is notified to continue the VoLTE service, and the CSCF sends the SIP-INVITE message to the CSCF of the called terminal.
The invention combines the CSFB technology, provides a method for selecting the voice communication mode of the mobile terminal according to the current network state for the LTE network through the cooperation of the CSCF and the MME, and can effectively improve the voice communication quality of the mobile terminal supporting the IMS service.
The technical scheme of the invention is described in detail in combination with the accompanying drawings, and can effectively guide the mobile terminal to execute the voice call fallback operation so as to ensure the continuity of the voice call, thereby effectively improving the voice call quality of the mobile terminal supporting the IMS service, improving the user experience, and simultaneously realizing that the LTE network can select the voice communication mode of the mobile terminal according to the current network state.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A method for voice call fallback, for use in a CSCF server, comprising:
receiving a protocol signaling for initiating a VoLTE voice service from a mobile terminal;
determining whether to send a service inquiry command to a mobile management entity of the mobile terminal according to the protocol signaling;
receiving a query result from the mobile management entity, and sending a voice call fallback command to the mobile terminal according to the query result so that the mobile terminal executes a voice call fallback operation; wherein,
the protocol signaling comprises a target identifier for marking the voice call fallback operation supported by the mobile terminal under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query;
determining whether to send the service inquiry command to the mobility management entity according to the protocol signaling specifically includes:
judging whether the CSCF server supports the target identifier or not;
and if so, sending the service query instruction to the mobile management entity.
2. The method of voice telephony fallback according to claim 1,
the content of the resource status query includes at least one of:
the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and
the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
3. A CSCF server, comprising:
the first receiving module is used for receiving a protocol signaling for initiating a VoLTE voice service from a mobile terminal;
a determining module, configured to determine whether to send a service query instruction to a mobility management entity of the mobile terminal according to the protocol signaling;
the first receiving module is further configured to: receiving a query result from the mobility management entity;
the first sending module is used for sending a voice call fallback command to the mobile terminal according to the query result so that the mobile terminal can execute voice call fallback operation; wherein,
the protocol signaling comprises a target identifier for marking the voice call fallback operation supported by the mobile terminal under the protocol signaling, and the query instruction is used for enabling the mobile management entity to perform resource state query;
the determining module is specifically configured to: judging whether the CSCF server supports the target identifier or not;
the first sending module is further configured to: and if so, sending the service query instruction to the mobile management entity.
4. The CSCF server of claim 3,
the content of the resource status query includes at least one of:
the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and
the query result and the voice call drop command comprise a target network of the voice call drop operation, so that the mobile terminal executes the voice call drop operation according to the target network.
5. A method for voice call fallback in a mobile terminal, comprising:
adding a target identifier in a protocol signaling, wherein the target identifier is used for marking the voice call fallback operation under the protocol signaling supported by the mobile terminal;
sending the protocol signaling to a CSCF server;
and receiving a voice call drop command from the CSCF server to execute a voice call drop operation, wherein the voice call drop command comprises a target network of the voice call drop operation, the voice call drop command is determined by the CSCF server according to a query result from a mobile management entity, and the query result is sent by the mobile management entity in response to a service query instruction of the CSCF server.
6. A mobile terminal, comprising:
the marking module is used for adding a target identifier in the protocol signaling, wherein the target identifier is used for marking the voice call fallback operation of the mobile terminal under the protocol signaling;
the second sending module is used for sending the protocol signaling to the CSCF server;
a second receiving module, configured to receive a voice call fallback command from the CSCF server to perform a voice call fallback operation, where the voice call fallback command includes a target network of the voice call fallback operation, the voice call fallback command is determined by the CSCF server according to a query result from a mobile management entity, and the query result is sent by the mobile management entity in response to a service query instruction of the CSCF server.
7. A method for voice call fallback for a mobile management entity, comprising:
receiving a service query instruction from a CSCF server;
inquiring the resource state according to the service inquiry instruction;
sending the query result to the CSCF server to determine whether the mobile terminal executes the voice call fallback operation;
the CSCF server receives a protocol signaling for initiating a VoLTE voice service from the mobile terminal, the protocol signaling comprises a target identifier for marking a voice call fallback operation under the condition that the mobile terminal supports the protocol signaling, and if the CSCF server supports the target identifier, the CSCF server sends the service query instruction to the mobile management entity.
8. The method of claim 7, wherein the content of the resource status query comprises at least one of:
the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and
and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
9. A mobility management entity, comprising:
a third receiving module, configured to receive a service query instruction from the CSCF server;
the query module is used for querying the resource state according to the service query instruction;
the third sending module is used for sending the query result to the CSCF server so as to determine whether the mobile terminal executes the voice call fallback operation or not;
the CSCF server receives a protocol signaling for initiating a VoLTE voice service from the mobile terminal, the protocol signaling comprises a target identifier for marking a voice call fallback operation under the condition that the mobile terminal supports the protocol signaling, and if the CSCF server supports the target identifier, the CSCF server sends the service query instruction to the mobile management entity.
10. The mobility management entity according to claim 9, wherein the content of the resource status query comprises at least one of:
the method comprises the steps that a current network deployment state, a VoLTE voice service state of a mobile terminal, a load state of a base station to which the mobile terminal belongs and other network resource states are set; and
and the query result comprises a target network of the voice call fallback operation, so that the mobile terminal executes the voice call fallback operation according to the target network.
11. A voice call fallback system comprising: the CSCF server of claim 3 or 4, the mobile terminal of claim 6 and the mobility management entity of claim 9 or 10.
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CN109417742A (en) * 2016-07-11 2019-03-01 华为技术有限公司 A kind of trigger circuit exchange falls the method, apparatus and system of process after rise
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104427524A (en) * 2013-08-19 2015-03-18 中兴通讯股份有限公司 Voice service realization method and device
CN104507131A (en) * 2015-01-04 2015-04-08 中国联合网络通信集团有限公司 Determination method for voice service scheme of VoLTE (Voice over Long Term Evolution) terminal and VoLTE terminal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010044730A2 (en) * 2008-10-15 2010-04-22 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for mobility selection of voice over the evolved packet system
US9094928B2 (en) * 2011-04-06 2015-07-28 Apple Inc. Multiple network mobile device connection management
US9578554B2 (en) * 2011-09-21 2017-02-21 Qualcomm Incorporated Methods and apparatus for improving a call fallback user experience
CN103037452A (en) * 2011-09-29 2013-04-10 北京三星通信技术研究有限公司 Methods for supporting continuity of voice service
CN103987097B (en) * 2013-02-07 2018-01-30 中国移动通信集团广东有限公司 A kind of method for switching speech business and the network of switching speech business
US9584553B2 (en) * 2013-06-28 2017-02-28 Qualcomm Incorporated User experience of a voice call associated with a device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104427524A (en) * 2013-08-19 2015-03-18 中兴通讯股份有限公司 Voice service realization method and device
CN104507131A (en) * 2015-01-04 2015-04-08 中国联合网络通信集团有限公司 Determination method for voice service scheme of VoLTE (Voice over Long Term Evolution) terminal and VoLTE terminal

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