CN108243461B - Method for switching terminal call - Google Patents

Method for switching terminal call Download PDF

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Publication number
CN108243461B
CN108243461B CN201611221943.2A CN201611221943A CN108243461B CN 108243461 B CN108243461 B CN 108243461B CN 201611221943 A CN201611221943 A CN 201611221943A CN 108243461 B CN108243461 B CN 108243461B
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network
switching
priority system
calls
terminal
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CN108243461A (en
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侯景华
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Chen Core Technology Co ltd
Chenxin Technology Co ltd
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Chen Core Technology Co ltd
Datang Semiconductor Design Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H04W36/023—Buffering or recovering information during reselection
    • 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

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

Abstract

The invention provides a method for switching terminal conversation, which is used for ensuring the normal switching of multi-channel conversation, when the SRVCC switched from 4G to 2G/3G network conflicts with the conversation switching, namely, whether the conversation switching is initiated in the process of the SRVCC switched from 4G to 2G/3G network or the conversation switching is triggered in the process of the conversation switching, the SRVCC switched from 4G to 2G/3G network or the SRVCC switched from 4G to 2G/3G network and the conversation switching occur simultaneously are all that one switching process is completed first and then the other switching process is executed, thus avoiding the conflict caused by the two simultaneous occurrence and the conversation switching failure.

Description

Method for switching terminal call
Technical Field
The invention relates to the field of communication, in particular to a method for switching terminal conversation.
Background
According to the current trend of Network development, the coexistence of GSM (Global System for Mobile communications), UTRAN (Universal Terrestrial Radio Access Network) and E-UTRAN (UMTS Terrestrial Radio Access Network) networks lasts for a long time, so that a multi-mode (such as TDL/TDS/GSM) terminal will be the mainstream of the current market. The Voice service implementation mechanisms of 4G and 2/3G are different, 4G is implemented by VoIP (Voice over IP), and 2/3G is performed by circuit domain. To ensure continuity of voice traffic between the 4G network and the 2/3G network, a multimode end user needs to support handoff of voice traffic from the 4G to the 2/3G network.
If the user A and B and C have two voice calls at the same time, the user A can select to talk with one of the two voice calls and keep the other voice call according to the requirement, and can initiate the switching at any time.
When the conversation is switched under the VoIP, the conversation of A and B is firstly kept, and then the conversation of A and C is recovered. And 2/3G, the call holding and recovery are paired, and the two-way holding or normal call state telephone cannot exist at the same time. If SRVCC from 4G to 2/3G occurs during the call handover process under VoIP, it may cause the phones from a and B to be successfully held, but the calls from a and C are not restored, and the two phones from SRVCC to 2/3G are all in call holding state, resulting in an abnormality. Srvcc (single Radio Voice service continuity) is a Voice over LTE (Voice over LTE) Voice service continuity scheme proposed by 3GPP, and mainly aims to solve the problem of how to ensure Voice Call continuity when a single Radio frequency UE moves between an LTE/Pre-LTE network and a 2G/3G CS network, that is, to ensure smooth handover of the single Radio frequency UE between VoIP Voice controlled by IMS and CS domain Voice.
Disclosure of Invention
The invention aims to provide a method for switching terminal calls, which is used for eliminating conflict caused when SRVCC of call switching and network switching from 4G to 2/3G occur simultaneously.
In order to achieve the above object, the present invention provides a method for switching a terminal call, which is used to ensure normal switching of multi-path calls, when switching between multi-path calls conflicts with switching of a terminal from a network of a high priority system to a network of a low priority system, if switching between multi-path calls occurs first, switching between multi-path calls is executed first, and then switching of the terminal from the network of the high priority system to the network of the low priority system is executed; otherwise, the network switching from the high-priority system to the low-priority system is executed firstly, and then the switching among the multi-channel calls is executed.
Preferably, in the method for switching terminal calls, before the switching between the multi-way calls occurs, the multi-way call is simultaneously established between one terminal and a plurality of other terminals, wherein one of the multi-way calls is in a normal call state, and at least one of the other multi-way calls is in a hold state.
Preferably, in the above method for switching a terminal call, the switching between multi-way calls is: the terminal switches one current call in the normal call state into the hold state, and switches at least one other call in the hold state into the normal call state.
Preferably, in the method for switching a terminal call, the switching a terminal from a network of a high priority system to a network of a low priority system includes: handover of the LTE network to the 3G network, handover of the 3G network to the 2G network, and handover of the LTE network to the 2G network.
Preferably, in the method for switching a terminal call, if the switching between the multi-way calls and the switching of the terminal from the network of the high priority system to the network of the low priority system occur simultaneously, the switching from the network of the high priority system to the network of the low priority system is executed first, and then the switching between the multi-way calls is executed.
Preferably, in the method for switching a terminal call, if the switching between the multi-way calls and the switching of the terminal from the network of the high priority system to the network of the low priority system occur simultaneously, the switching between the multi-way calls is executed first, and then the switching of the terminal from the network of the high priority system to the network of the low priority system is executed.
Preferably, in the method for switching a terminal call, if the switching between the multi-way calls occurs first, the switching between the multi-way calls is executed first, and then the step of executing the switching of the terminal from the network of the high priority system to the network of the low priority system includes:
executing the switching process between the multi-channel calls in the network with the high priority system;
and inquiring whether a delayed B2 event exists, if so, reporting the B2 event and waiting for a switching command, and executing network switching from a network with a high priority system to a network with a low priority system after receiving the switching command.
Preferably, in the terminal call switching method, the B2 event triggers a command for switching from a network of a high priority system to a network of a low priority system.
Preferably, in the method for switching a terminal call, the step of performing the network switching from the network of the high priority system to the network of the low priority system first, and then performing the switching between the multi-path calls includes:
caching the switching between the multi-way calls;
executing the network switching from the network with the high priority system to the network with the low priority system;
judging whether the switching from the network with the high priority system to the network with the low priority system is successful, if so, further judging whether the cached switching between the multi-channel calls exists, and if so, executing the switching process between the multi-channel calls in the network with the low priority system; and if the multi-path call fails, executing the switching process between the multi-path calls in the network with the high priority system.
Preferably, in the method for switching terminal calls, after executing the flow of switching between multi-path calls in the network of the high priority system, it is required to query whether there is a delayed B2 event again, if so, report the delayed B2 event and wait for a switching command, and after receiving the switching command, execute the switching from the network of the high priority system to the network of the low priority system.
The invention also provides a computer program product comprising a set of instructions which, when executed by a computerized device, cause the computerized device to perform the method as described above.
In the method for switching the terminal call, when the SRVCC switched from the 4G to the 2G/3G network conflicts with the call switching, namely, whether the call switching is initiated in the process of the SRVCC switched from the 4G to the 2G/3G network or the call switching is triggered in the process of the call switching, the SRVCC switched from the 4G to the 2G/3G network or the SRVCC switched from the 4G to the 2G/3G network and the call switching occur simultaneously, one switching process is firstly completed and then another switching process is executed, so that the conflict caused by the two processes occurring simultaneously is avoided, and the call switching failure is caused.
Drawings
Fig. 1 is a flowchart of a method for switching a terminal call according to an embodiment of the present invention.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
The invention provides a method for switching terminal calls, which is used for ensuring the normal switching of multi-path calls. The method comprises the steps that multi-path calls are simultaneously established between one terminal and other terminals, wherein one call is in a normal call state, at least one other call is in a hold state, and when the terminal needs to switch the current call in the normal call state into the hold state and switch the call in the hold state into the normal call state, the multi-path calls need to be switched. Specifically, the switching between the multi-way calls is: the terminal switches one current call in the normal call state into the hold state, and switches at least one other call in the hold state into the normal call state. That is, the above-mentioned process is the process of switching the multi-way call.
It should be noted that, in the embodiment of the present invention, the switching of the terminal from the network of the high priority system to the network of the low priority system includes, but is not limited to: handover of the LTE network to the 3G network, handover of the 3G network to the 2G network, and handover of the LTE network to the 2G network. In other embodiments of the present invention, the switching of the terminal from the network of the high priority system to the network of the low priority system further includes switching between networks of different systems, which is not described herein again. It should be noted that the LTE network includes a 4G network.
Further, it should be noted that, in the embodiment of the present invention, when the network switching of the terminal from the network of the high priority system to the network of the low priority system refers to switching of the LTE network to the 3G network and switching of the LTE network to the 2G network, the switching between the multi-way calls includes not only switching of a voice call but also switching of a video call.
The method for switching the terminal call comprises the following steps: when the switching between multi-path calls conflicts with the switching of the terminal from the network of the high-priority system to the network of the low-priority system, if the switching between the multi-path calls occurs first, the switching between the multi-path calls is executed first, and then the switching of the terminal from the network of the high-priority system to the network of the low-priority system is executed; otherwise, the network switching from the high-priority system to the low-priority system is executed firstly, and then the switching among the multi-channel calls is executed.
Specifically, as shown in fig. 1, fig. 1 is a flowchart of a method for switching a terminal call in an embodiment of the present invention. First, as shown in step S1 in fig. 1, a call switching is initiated, that is, the terminal switches one of the calls currently in the normal call state to the hold state, and switches at least one of the other calls in the hold state to the normal call state. In the embodiment of the invention, the terminal only has two calls at the same time, namely one call is in a normal call state and the other call is in a hold state. At this time, it is necessary to change the current one-way call in the normal call state to be in the hold state, and the current one-way call in the hold state is changed to be in the normal call state.
Next, it is determined whether the network currently in the high-priority system is in the process of switching to the network in the low-priority system, as in step S2 in fig. 1.
In the embodiment of the invention, the network with the high priority system is a 4G network, and the network with the low priority system is a 2G/3G network.
If the SRVCC is not currently in the SRVCC process for switching from the 4G network to the 2G/3G network, that is, the switching between the normal call state and the hold state occurs first, and the SRVCC process from the 4G network to the 2G/3G network occurs later, at this time, the switching between the normal call state and the hold state is performed in the current system network, that is, as shown in step S8 in fig. 1.
If the SRVCC switching process from the 4G network to the 2G/3G network is currently in progress, that is, the SRVCC from the 4G network to the 2G/3G network occurs first, and then the switching between the normal call state and the hold state occurs. The switching process between the two paths of calls in the normal call state and the holding state is cached first, and the end of the SRVCC process for switching from the 4G network to the 2G/3G network is waited. As described in step S3 in fig. 1.
Next, it needs to be determined whether SRVCC for handover from the 4G network to the 2G/3G network is successful, as shown in step S4 in fig. 1. If the SRVCC handover from the 4G network to the 2G/3G network is successful, it is further determined whether there is a buffered call handover, as shown in step S5 in fig. 1. If there is a buffered call handover, step S6 is performed, and since the network handover is successful at this time, that is, the network has been handed over from the 4G network to the 2G/3G network, the call handover procedure executed at this time is the call handover procedure in the 2G/3G network. If the determination result in the step S5 is that there is no buffered call handover, the flow of the method for terminal call handover is directly ended.
If the SRVCC for the handover from the 4G network to the 2G/3G network fails, it is also necessary to determine whether there is a buffered call handover, as shown in step S7 in fig. 1, if there is a buffered call handover, because the network handover fails, that is, the call handover is still in the 4G network, at this time, a call handover procedure under the 4G network needs to be executed, as shown in step S8 in fig. 1. If the result of the determination in step S7 is that there is no buffered call handover, the flow of the method for terminal call handover is ended.
After the call handover in the 4G network is completed, it is determined whether there is a delayed B2 event, as shown in step S9 in fig. 1. The B2 event triggers a command to switch from a network of high priority scheme to a network of low priority scheme. In this embodiment, the B2 event triggers a command to switch from a 4G to a 2G/3G network. If there is no delayed B2 event, the flow of the method of terminal call handover is ended. If the delayed B2 event exists, reporting the delayed B2 event and waiting for the 4G network to issue a switching command, and after receiving the switching command issued by the 4G network, executing the switching from the 4G network to the 2G/3G network. As in step S10 of fig. 1. Then, step S4 is executed again, that is, it is determined whether SRVCC for handover from the 4G network to the 2G/3G network is successful.
When the SRVCC for switching from the 4G to the 2G/3G network is started simultaneously while the call handover is initiated in step S1, the network switching from the network of the high priority system to the network of the low priority system is performed first, that is, step S3 is performed first, and then the handover between the multi-way calls is performed, that is, step S8. Of course, in other embodiments of the present invention, the switching between the multi-way calls may be performed first, i.e., the step S8, and then the switching from the network of the high priority system to the network of the low priority system may be performed, i.e., the step S3.
Embodiments of the present invention also provide a computer program product comprising a set of instructions which, when executed by a computerized device, cause the computerized device to perform the method as described above.
To sum up, in the method for terminal session handover provided in the embodiment of the present invention, when the SRVCC for network handover from 4G to 2G/3G conflicts with the session handover, that is, no matter the session handover is initiated during the SRVCC for network handover from 4G to 2G/3G, or the SRVCC for network handover from 4G to 2G/3G is triggered during the session handover, or the SRVCC for network handover from 4G to 2G/3G and the session handover occur simultaneously, one of the handover processes is completed before the other handover process is executed, so that a failure of session handover due to the conflict caused by the two simultaneous occurrences is avoided.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A method for switching terminal conversation is used for ensuring normal switching of multi-channel conversation and is characterized in that when switching between the multi-channel conversation conflicts with switching of a terminal from a network with a high priority system to a network with a low priority system, if the switching between the multi-channel conversation occurs first, the switching between the multi-channel conversation is executed first, and then the switching of the terminal from the network with the high priority system to the network with the low priority system is executed; otherwise, the network switching from the high-priority system to the low-priority system is executed firstly, and then the switching among the multi-channel calls is executed; wherein, the switching among the multi-path calls comprises call switching under the network telephone; the switching of the terminal from the network with the high priority system to the network with the low priority system comprises the following steps: handover of the LTE network to the 3G network and handover of the LTE network to the 2G network.
2. The method of claim 1, wherein before the handoff between multi-way calls occurs, a multi-way call is simultaneously established between a terminal and a plurality of other terminals, wherein one of the multi-way calls is in a normal call state and at least one of the other multi-way calls is in a hold state.
3. The method for handing over between terminal sessions as claimed in claim 2, wherein the handing over between multi-way sessions is: the terminal switches one current call in the normal call state into the hold state, and switches at least one other call in the hold state into the normal call state.
4. The method for switching terminal calls as claimed in claim 1, wherein if the switching between the multi-way calls and the switching of the terminal from the network of the high priority system to the network of the low priority system occur simultaneously, the switching from the network of the high priority system to the network of the low priority system is performed first, and then the switching between the multi-way calls is performed.
5. The method of claim 1, wherein if the switching between the multi-way calls and the switching of the terminal from the network of the high priority system to the network of the low priority system occur simultaneously, the switching between the multi-way calls is performed first, and then the switching of the terminal from the network of the high priority system to the network of the low priority system is performed.
6. The method for switching terminal calls as claimed in claim 1, wherein the step of performing the switching between the multi-way calls first and then performing the switching of the terminal from the network of the high priority system to the network of the low priority system, if the switching between the multi-way calls occurs first, comprises:
executing the switching process between the multi-channel calls in the network with the high priority system;
and inquiring whether a delayed B2 event exists, if so, reporting the B2 event and waiting for a switching command, and executing network switching from a network with a high priority system to a network with a low priority system after receiving the switching command.
7. The method for terminal call handover as claimed in claim 6, wherein the B2 event triggers a command to switch from a network of high priority scheme to a network of low priority scheme.
8. The method of claim 1, wherein the step of performing the handover from the network of the high priority system to the network of the low priority system and then performing the handover between the multi-way calls comprises:
caching the switching between the multi-way calls;
executing the network switching from the network with the high priority system to the network with the low priority system;
judging whether the switching from the network with the high priority system to the network with the low priority system is successful, if so, further judging whether the cached switching between the multi-channel calls exists, and if so, executing the switching process between the multi-channel calls in the network with the low priority system; and if the multi-path call fails, executing the switching process between the multi-path calls in the network with the high priority system.
9. The method as claimed in claim 8, wherein after performing the procedure of switching between multi-path calls in the network of high priority system, it is required to query whether there is a delayed B2 event again, if so, report the delayed B2 event and wait for a switching command, and after receiving the switching command, perform a network switch from the network of high priority system to the network of low priority system.
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Publication number Priority date Publication date Assignee Title
CN109361444B (en) * 2018-11-30 2021-08-24 维沃移动通信有限公司 Transmitting antenna switching method and terminal equipment
CN111510960A (en) * 2019-01-30 2020-08-07 大唐移动通信设备有限公司 SRVCC handover failure punishment processing method and device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1604661A (en) * 2003-09-30 2005-04-06 华为技术有限公司 A method for answering multiple calls
CN1848993A (en) * 2005-04-05 2006-10-18 华为技术有限公司 Switching method for circuit exchange call connection
CN101087478A (en) * 2006-09-05 2007-12-12 华为技术有限公司 Control method for call switching, communication system and user device
CN101330640A (en) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 Method for implementing call retention business of IP multimedia subsystem centralized business
CN101646148A (en) * 2009-09-07 2010-02-10 中兴通讯股份有限公司 Method and system for realizing call on hold and three-way calling business
CN102780801A (en) * 2012-07-17 2012-11-14 中兴通讯股份有限公司 Intelligent dialing method and device for supporting various calling modes
CN104168286A (en) * 2014-08-26 2014-11-26 小米科技有限责任公司 Voice communication method and device
CN104380799A (en) * 2013-06-13 2015-02-25 华为技术有限公司 Method and device for circuit-switched fallback
WO2015169210A1 (en) * 2014-05-05 2015-11-12 Mediatek Inc. Method and apparatus for managing a call during a handover procedure in a communications system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467915B (en) * 2009-02-18 2012-05-09 Samsung Electronics Co Ltd Communication method for voice calls

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1604661A (en) * 2003-09-30 2005-04-06 华为技术有限公司 A method for answering multiple calls
CN1848993A (en) * 2005-04-05 2006-10-18 华为技术有限公司 Switching method for circuit exchange call connection
CN101087478A (en) * 2006-09-05 2007-12-12 华为技术有限公司 Control method for call switching, communication system and user device
CN101330640A (en) * 2007-06-19 2008-12-24 中兴通讯股份有限公司 Method for implementing call retention business of IP multimedia subsystem centralized business
CN101646148A (en) * 2009-09-07 2010-02-10 中兴通讯股份有限公司 Method and system for realizing call on hold and three-way calling business
CN102780801A (en) * 2012-07-17 2012-11-14 中兴通讯股份有限公司 Intelligent dialing method and device for supporting various calling modes
CN104380799A (en) * 2013-06-13 2015-02-25 华为技术有限公司 Method and device for circuit-switched fallback
WO2015169210A1 (en) * 2014-05-05 2015-11-12 Mediatek Inc. Method and apparatus for managing a call during a handover procedure in a communications system
CN104168286A (en) * 2014-08-26 2014-11-26 小米科技有限责任公司 Voice communication method and device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
UE aspects of eCSFB Solution 1;Qualcomm Incorporated, China Unicom, Huawei, HiSilicon, CATT, CA;《CT WG1 Meeting #89》;20141121;全文 *

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Address after: 201206 Shanghai Pudong New Area free trade pilot area 1258 moon 3 building fourth floor A406 room

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