CN104081821A - Method and device for reverse switching of video call - Google Patents

Method and device for reverse switching of video call Download PDF

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Publication number
CN104081821A
CN104081821A CN201280022425.1A CN201280022425A CN104081821A CN 104081821 A CN104081821 A CN 104081821A CN 201280022425 A CN201280022425 A CN 201280022425A CN 104081821 A CN104081821 A CN 104081821A
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carrying
service
service switchover
configured information
switchover type
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Granted
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CN201280022425.1A
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CN104081821B (en
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徐小英
陈东
吴晓波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • 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

Abstract

Embodiments of this application relate to a method and device for reverse switching of a video call. The method for reverse switching of a video call comprises: indicating at least one piece of the following information: a switched service type, bearer information used for bearing a switching service type, and port information to a UE, and/or indicating at least one piece of the following information: a switched service type, bearer information used for bearing a switching service type, and port information to an ATCF/ATGW, the switching service type comprising voice switching or voice and video switching. According to the embodiments of this application, a user can still obtain best user experience after reverse switching of a video call by ensuring normal transmission of voice and/or a video between the UE and the ATCF/ATGW when the video call is switched from a CS domain to a PS domain.

Description

Method and device for reverse switching of video call
The method and apparatus technical field of the reverse switching of video call
The application is related to communication technical field, in particular to the method and apparatus of the reverse switching of video call.Background technology
In the prior art, the reverse switching of audio call refers to the circuit switching that (UTRAN, Universal Terrestrial Radio Access Network) is met from global system for mobile communications radio（CS, Circuit Switch) domain is switched to the global terrestrial radio access network of evolution（E-UTRAN, Evolved Universal Terrestrial Radio Access Network)/high-speed packet access (HSPA, High Speed Packet Access) HSPA packet switch（PS, Packet Switch) domain.Usually, radio network controller（RNC, Radio Network Controller) send switching（HO, Handover) request message is to mobile switching centre（MSC, Mobile Switching Center)/WMG（MGW, Media Gateway) server, MSC/MGW servers also send session conversion notice（Session Transfer Notification) message to access conversion and control function（ATCF, Access Transfer Control Functionality)/access transfer gateway（ATGW, Access Transfer Gateway), indicate that ATCF/ATGW prepares conversion media to ps domain, usual ATCF has control function, mainly handles signaling, and ATGW has user plane functions, mainly handles user face data；ATCF/ATGW is in the response message by the ATCF/ATGW of distribution media port and coder（Codec MSC/MGW servers) are supplied to.MSC/MGW servers send reverse handover request message to target（Target) mobility management entity (MME, Mobility Management Entity)/general packet radio service technology（GPRS, General Packet Radio Service) serving GPRS support node（SGSN, Serving GPRS Support Node), target MME/SGSN notifies base station（Such as NB/eNB) distribution E-UTRAN resource, and target MME/SGSN returns to reverse handoff response to MSC/MGW servers.Then, MSC/MGW servers send HO command messages to Radio Access Network（RAN, Radio Access Network), RAN retransmits HO command messages to user equipment（ UE , User Equipment ).Due to residing in ATCF/ATGW ATGW in medium surface, MSC/MGW servers send access conversion preparation request message and are transformed into IP address and port of the UE in target side to ATCF to trigger ATCF progress media paths；When quartering at ATCF/ATGW ATGW without medium surface, MSC/MGW servers send access conversion preparation request message to ATCF, and media path is set up between ATCF/ATGW and MSC/MGW servers.UE sends switch acknowledgment message to radio network controller（RNC, Radio Network Control)/eNB, RNC/eNB send handoff notification message give target MME/SGSN.Target MME/SGSN sends handoff completion message and gives MSC/MGW servers, retransmits modification bearer messages to gateway（SGW, Serving Gateway), SGW is given to packet data gateway（PGW, Packet Data Gateway) update PS bearer contexts.Then, voice medium face communication is immediately begun to.When UE initiates voice conversation transfer process（Session transfer procedure) ATGW is arrived, carrying is resettled, then voice medium（The user face data that i.e. audio call is produced）Sent on dedicated bearer.
For video call, video call is in the cs domain only in 1 carrying（For example, RAB（RAB, Radio Access Bearer)) on transmit, in the ps domain 2 carrying on transmit（For example, a carrying transmission voice, a carrying transmission video）.So, how increasing with video call, ensure that video call is reversely switching to urgent problem to be solved from CS domain to ps domain.The content of the invention
Present applicant proposes the method and apparatus of the reverse switching of video call, reverse switching of the video call from CS domain to ps domain is realized.
On the one hand, it is proposed that the method for the reverse switching of video call, including：Indicate at least one in below UE information：The type of service of switching, the carrying information for carrying service switchover type, port information, and/or indicate at least one in below ATCF/ATGW information：The type of service of switching, the carrying information for carrying service switchover type, port information, wherein the service switchover type includes switching voice or switching voice and video.
On the other hand, it is proposed that the method for the reverse switching of video call, including：The first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type are obtained, wherein service switchover type includes switching voice or switching voice and video；Service switching is carried out according to first configured information and/or second configured information.
On the other hand, it is proposed that the method for the reverse switching of video call, including：Obtain and indicate the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；Service switching is carried out according to the 3rd configured information, the 4th configured information or the 5th configured information. On the other hand, it is proposed that the method for the reverse switching of video call, including：Obtain and indicate the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment.
On the other hand, it is proposed that the device of the reverse switching of video call, including：First indicating member, for indicating at least one in below UE information：The type of service of switching, the carrying information for carrying service switchover type, port information, and/or indicate at least one in below ATCF/ATGW information：The type of service of switching, the carrying information for carrying service switchover type, port information, wherein the service switchover type includes switching voice or switching voice and video.
On the other hand, it is proposed that the device of the reverse switching of video call, including：Second acquisition unit, for obtaining the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；First switch unit, for carrying out service switching according to first configured information and/or second configured information.
On the other hand, it is proposed that the device of the reverse switching of video call, including：3rd acquiring unit, the 3rd configured information that service switchover type is indicated for obtaining, the 4th configured information for indicating carrying for carrying the service switchover type or the 5th configured information for indicating the port for carrying the service switchover type, wherein service switchover type include switching voice or switching voice and video；Second switch unit, for carrying out service switching according to the 3rd configured information, the 4th configured information or the 5th configured information.
On the other hand, it is proposed that the device of the reverse switching of video call, including：4th acquiring unit, the 3rd configured information that service switchover type is indicated for obtaining, the 4th configured information for indicating carrying for carrying the service switchover type or the 5th configured information for indicating the port for carrying the service switchover type, wherein service switchover type include switching voice or switching voice and video；Transmitting element, for the 3rd configured information, the 4th configured information or the 5th configured information to be sent into user equipment.
The embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call. Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, cylinder will be made to the required accompanying drawing used in the embodiment of the present application below singly to introduce, apparently, drawings described below is only some embodiments of the present application, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the method for the reverse switching of the video call according to the application one embodiment.Fig. 2 is the flow chart of the method for the reverse switching of the video call according to another embodiment of the application.Fig. 3 is the flow chart of the method for the reverse switching of the video call according to another embodiment of the application.Fig. 4 is the flow chart of the method for the reverse switching of the video call according to another embodiment of the application.Fig. 5 is the structural representation of the device of the reverse switching of the video call according to the application one embodiment.
Fig. 6 is the structural representation of the device of the reverse switching of the video call according to the application one embodiment.
Fig. 7 is the structural representation of the device of the reverse switching of the video call according to another embodiment of the application.
Fig. 8 is the structural representation of the device of the reverse switching of the video call according to another embodiment of the application.
Fig. 9 is the structural representation of the device of the reverse switching of the video call according to the another embodiment of the application.Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described embodiment is a part of embodiment of the application, rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made should all belong to the scope of the application protection.
The technical scheme of the application, can apply to various communication systems, for example：Global system for mobile communications（GSM, Global System of Mobile communication), CDMA（CDMA, Code Division Multiple Access) system, WCDMA（WCDMA, Wideband Code Division Multiple Access Wireless), GPRS (GPRS, General Packet Radio Service), Long Term Evolution（LTE, Long Term Evolution) etc..
UE is also referred to as mobile terminal（Mobile Terminal), mobile station（ Mobile Station ) Deng can be through wireless access network（For example, RAN, Radio Access Network) communicated with one or more core nets.User equipment exchanges voice and/or data with wireless access network.
Base station, can be the base station in GSM or CDMA（BTS, Base Transceiver Station), can also be the radio network controller in WCDM A（RNC, Radio Network Control), it can also be the evolved base station in LTE（ENB or e-NodeB, evolutional Node B), the application is not limited, but for convenience of description, following embodiments are illustrated by taking eNB as an example.
In addition, the terms " system " and " network " are often used interchangeably herein.The terms " and/or ", only a kind of incidence relation for describing affiliated partner, represents there may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A and B, these three situations of individualism B.In addition, character "/" herein, can represent forward-backward correlation object be it is a kind of " or " relation, the relation of " set " of network element can also be represented.
In the reverse handoff procedure of video call, MSC/MGW servers will indicate UE or ATCF/ATGW switching voices and/or video, and further indicate the carrying of carrying voice and/or video flowing.Below in conjunction with accompanying drawing, the flow of the method for the reverse switching of video call according to the embodiment of the present application is described in detail.As shown in figure 1, comprising the following steps.
11, MSC/MGW servers can indicate at least one in below UE information：The type of service of switching, the carrying information for carrying the service switchover type, port information, and/or indicate at least one in below ATCF/ATGW information：The type of service of switching, the carrying information for carrying the service switchover type, port information.
Specifically, MSC/MGW servers indicate that UE includes the mark of 1 or 2 carrying for carrying the carrying information of the service switchover type；MSC/MGW servers indicate that UE includes uplink port for carrying the port information of the service switchover type.MSC/MGW servers indicate that ATCF/ATGW includes the mark of 1 or 2 carrying for carrying the carrying information of the service switchover type；MSC/MGW servers indicate that ATCF/ATGW includes downlink port for carrying the port information of the service switchover type.
Pass through the instruction of above MSC/MGW servers, the embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
More than, MSC/MGW server service switchover types can be indicated in advance by webmaster or by system.
In addition, MSC/MGW servers can also voluntarily carry out decision-making, service switchover type is determined. MSC/MGW servers obtain the decision information of service switchover type, and wherein service switchover type includes switching voice or switching voice and video.
For example, MSC/MGW servers can be by the decision information of at least one following acquisition of information service switchover type：Number according to urgent call, the ability of the reverse switching of UE support video calls, UE the PDP contexts having（Such as, only reverse switching is indicated with 1 PDP）, instruction according to target MME/SGSN or local network and/or objective network support video call reverse switching ability.
According to the decision information, MSC/MGW servers indicate that UE carries out service switching according to the service switchover type and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type.
In general, MSC/MGW servers can explicitly indicate that UE carries out service switching according to the service switchover type, and indicate that ATCF/ATGW carries out business transmission according to the service switchover type according to the decision information.MSC/MGW servers can also implicitly indicate that UE carries out service switching according to the service switchover type, and/or indicate that ATCF/ATGW carries out business transmission according to the service switchover type according to the decision information.
Specifically, MSC/MGW servers can indicate that UE carries out service switching according to the service switchover type in the triggering of following opportunity, for example in CS calling procedures or after CS call setups, or when the reverse handover request message for receiving source RAN node transmission, either after the handoff response of target CN node is received or after the UE reverse switching capability of RNC transmissions is received.
Specifically, MSC/MGW servers can indicate that ATCF/ATGW carries out business transmission according to the service switchover type in the triggering of following opportunity, such as according to the information from the target MME/SGSN service switchover types received（Such as, in reverse switching response message）, or according to from source RNC/ base station controllers（BSC, Base Station Controller) information of service switchover type that receives（Such as, reverse handover request message）.
Pass through the instruction of above MSC/MGW servers, the embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
Correspondingly, the method for the reverse switching of the method for the reverse switching of the video call of ATCF/ATGW sides and the video call of UE sides is described in detail below in conjunction with Fig. 2 and Fig. 3.In order to illustrate cylinder will, with above method flow repetitive description will omit.
As shown in Fig. 2 the method for the reverse switching of the video call of ATCF/ATGW sides comprises the following steps. 21, ATCF/ATGW obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type, and wherein service switchover type includes switching voice, or switching voice and video.
Specifically, ATCF/ATGW can obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type from the target MME/SGSN.The UE that ATCF/ATGW can also be sent by UE supports the ability that video reversely switches, or obtains the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type from the MSC/MGW servers.
Further, when first configured information indicates that service switchover type is switching voice and video, second configured information is designated as UE and distributes 2 uplink ports.Or, when first configured information indicates that service switchover type is switching voice, second configured information is designated as UE and distributes 2 uplink ports and for recovering video, or is designated as UE 1 uplink port of distribution, and 1 uplink port is used for voice and does not recover video.
22, ATCF/ATGW carry out service switching according to first configured information and/or second configured information.
As can be seen here, the embodiment of the present application can be when video call be switched to ps domain from CS domains, the normal transmission of voice and/or video between UE and ATCF/ATGW is ensured, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
As shown in figure 3, the method for the reverse switching of the video call of UE sides comprises the following steps.
31, UE obtains and indicates the 3rd configured information of service switchover type, indicates the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, and wherein service switchover type includes switching voice or switching voice and video.
The 3rd configured information of service switchover type is indicated, the 4th configured information of carrying for carrying the service switchover type is indicated or indicates the 5th configured information of the port for carrying the service switchover type for example, UE can be obtained from MSC/MGW.
Or, the switching command sent by source RNC/BSC, UE can know that ATCF/ATGW is the voice of its distribution or port, the 3rd configured information of instruction service switchover type or the 4th configured information for indicating the carrying for carrying the service switchover type of video.
32, UE carry out service switching according to the 3rd configured information, the 4th configured information or the 5th configured information.
As can be seen here, the embodiment of the present application can be when video call be switched to ps domain from CS domains, really The normal transmission of voice and/or video between guarantor UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
As shown in figure 4, the method for the reverse switching of the video call of RNC sides comprises the following steps.
41, RNC obtains and indicates the 3rd configured information of service switchover type, indicates the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, and wherein service switchover type includes switching voice or switching voice and video.
The 3rd configured information of service switchover type is indicated, the 4th configured information of carrying for carrying the service switchover type is indicated or indicates the 5th configured information of the port for carrying the service switchover type for example, RNC can be obtained from MSC/MGW.
3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment by 42, RNC.
For example, the 3rd configured information, the 4th configured information or the 5th configured information can be sent to user equipment by RNC by radio resource control RRC signaling.
As can be seen here, the embodiment of the present application can be when video call be switched to ps domain from CS domains, the normal transmission of voice and/or video between UE and ATCF/ATGW is ensured, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
Below with reference to specific embodiment, illustrate to pass through Non-Access Stratum（NAS, Non- Access Stratum) or Access Layer（AS, Access Stratum) coordinate the service switchover type transmitted between UE and ATCF/ATGW after switching, such as switch voice or switching voice and video, and the further carrying of tunable business transmission.After NAS or AS completes to coordinate, UE and ATCF/ATGW determine whether to carry out the transmission of voice and/or video.
In general, multiple nodes in network can be with decision-making service switchover type.For example, the active calls that target MME/SGSN can be set up according to UE in source MME/SGSN sides whether be PDP (Packet Data Protocol) context that the ability of the reverse switching whether urgent call, UE support video call, UE have number, or according to eNB instruction come decision-making service switchover type be switching voice or switching voice and video.For example, whether UE can support the ability of reverse switching or the number for the PDP Context itself having of video call to be switching voice or switching voice and video come decision-making service switchover type according to itself.For example, Target RNC or eNB can be switching voice or switching voice and video according to the service condition or local policy decision-making service switchover type of resource.For example, source RNC can support video according to UE ability or according to local network and/or objective network The ability decision-making service switchover type of the reverse switching of calling is switching voice or switching voice and video.Specifically, if calling is urgent call, or UE does not support the ability of the reverse switching of video call, or UE only has a PDP Context, or in the case that local network and/or objective network do not support the ability of reverse switching of video call, the service switchover type that decision-making goes out is switching voice, and otherwise service switchover type is switching voice and video.
In addition, whether source MSC/MGW can be packet data protocol that whether whether urgent call, UE support ability, local network and/or the objective network of the reverse switching of video call to support the ability of reverse switching of video call, UE to have according to UE active calls（PDP, Packet Data Protocol) context number, or according to target MME/SGSN instruction come decision-making service switchover type be switching voice or switching voice and video.The ability of the reverse switching of network support video call can be specific to some Tracking Area Identifier（RAI, Routing Area Identity), Location Area Identification（LAI, Location Area Identity), blunt track region mark " i only (TAI, Tracking Area Identity) or public land mobile network mark（ PLMN ID, Public Land Mobile Network Identity ).
After decision-making, above-mentioned node can be by carrying decision information in NAS signaling, explicitly or implicitly to indicate that UE carries out service switching according to the service switchover type, and/or indicate that ATCF/ATGW carries out business transmission according to the service switchover type.Further, it is also possible to further indicate that UE is used for the carrying information and/or port information for carrying the service switchover type, and/or indicate that ATCF/ATGW is used for the carrying information and/or port information for carrying the service switchover type.
The example indicated as display, above-mentioned node can indicate switching voice in decision information or switch voice and video.Above-mentioned node can also further indicate to carry the carrying information and/or port information of service switchover type.Wherein, 7 information carryings breath can include 7 load marks, such as RAB ID;Port information includes indicating UE for carrying the up and/or downlink port of the service switchover type or indicating that ATCF/ATGW is used for the descending and/or uplink port for carrying the service switchover type.
As the example of implicit instruction, the quantity of the uplink port that above-mentioned node can be indicated in decision information implicitly indicates UE switching voices or switching voice and video, if for example, uplink port number is 1, equivalent to indicating UE switching voices；If uplink port number is more than or equal to 2, equivalent to instruction UE switching voice and videos.When uplink port number is more than or equal to 2, above-mentioned node can determine to carry the uplink port of voice and video stream according to the order or parity of uplink port.Such as, a port is used to carry voice, and second port is used to carry video.
As the example of implicit instruction, the quantity of the uplink port that above-mentioned node can be indicated in decision information implicitly indicates ATCF/ATGW switching voices or switching voice and video, if for example, up Port number is more than or equal to 2, then equivalent to instruction ATCF/ATGW switching voice and videos.Wherein, a port carrying voice, another port carrying video.
It is used as the example of implicit instruction, the type of service for the carrying that above-mentioned node can be indicated in decision information come implicitly indicate UE or ATCF/ATGW switching voice or switching voice and video, and further carried or quality of service class mark by distribution and preempting priority (APR, Allocation and Retention Priority)（QCI, Quality of Service Class Identity) value indicates carrying information and/or port information for carrying service switchover type.Such as, if type of service is conversation type, voice is switched equivalent to instruction；If type of service is stream, voice and video is switched equivalent to instruction.For example, voice bearer is carried in high ARP, carrying of the video bearer in low ARP.For example, QCI values are low to indicate carrying voice（Such as, voice is carried when QCI is 1）, QCI height instruction carrying videos.
In addition, as the example of implicit instruction, UE can also determine to switch the carrying that voice still switches voice and video according to the combination configuration of carrying.For example, for 64kbps high-speed, then decision-making switches voice and video；For low rate, then decision-making switches voice.In addition, if UE indicates ports of the ATCF/ATGW on voice and video in registration, then UE is after the uplink port of corresponding voice and video of ATCF/ATGW distribution is received, the corresponding relation indicated during by according to registration, it is determined that the uplink port for carrying switching voice and video.In addition, if UE has indicated the corresponding carrying of type of service switchover in registration, UE sends corresponding type of service after switching command is received in corresponding carrying.
Wherein, MSC/MGW server triggers indicate that ATCF/ATGW opportunity is：
MSC/MGW servers receive the switching type information of target MME/SGSN instructions, such as in reverse switching response message；Or
MSC/MGW servers receive the reverse handover request message of source RNC/BSC transmissions.
Wherein, target MME/SGSN triggerings indicate that ATCF/ATGW opportunity is：
Target MME/SGSN receives the reverse handover request message of MSC/MGW transmissions.
Wherein, UE triggerings indicate that ATCF/ATGW opportunity is：
UE is during IMS registration, the ability for notifying ATCF/ATGW to support the reverse switching of video call on UE；Or
UE indicates that ATCF/ATGW distributes the downlink port for carrying voice and video for UE during IMS registration.
Wherein, MSC/MGW server triggers indicate that UE opportunity is：
In CS calling procedures or after CS call setups；Or When receiving the reverse handover request message that source RAN node is sent；Or
After the reverse handoff response of target CN node transmission is received；Or
After the ability of reverse switching of the UE video call of source RNC transmissions is received.
Below by from the angle of MSC/MGW servers, the method that the reverse switching that the video call according to the embodiment of the present application how is realized in NAS or AS is illustrated respectively.
Explanation indicates configuration informations of the UE on the reverse switching of video call by non access stratum NAS message in the first specific embodiment.Here, suppose that UE supports the reverse switching of video call.
In the first situation, MSC/MGW servers indicate that UE is switched to 2 carryings.
For example, MSC/MGW servers can indicate that UE switches voice and video, and further indicate carrying, or the carrying for carrying switching voice and video can be just consulted when ps domain activates PDP in UE.MSC/MGW servers can indicate that ATCF/ATGW switches voice and video, and further indicate carrying.
Or, MSC/MGW servers can indicate that UE only switches voice, now can initiate to set up the carrying of video again after the completion of voice switching.
For example, MSC/MGW servers indicate that UE only switches voice, and further indicate the carrying of carrying switching voice, or the carrying of carrying switching voice can be just consulted when PDP is activated.MSC/MGW servers indicate that ATCF/ATGW only switches voice, and further indicate the carrying of carrying voice.
In the second situation, MSC/MGW servers indicate that UE is switched to 1 carrying.
For example, MSC/MGW servers can indicate that UE switches voice and video.MSC/MGW servers can indicate that ATCF/ATGW switches voice and video, and further indicate that ATCF/ATGW is that UE distributes 2 uplink ports.
For example, MSC/MGW servers can indicate that UE only switches voice.MSC/MGW servers can indicate that ATCF/ATGW only switches voice, and further indicate that ATCF/ATGW then distributes 2 uplink ports to recover video for UE, and 1 uplink port is distributed for UE if video is not recovered.
Explanation indicates configuration informations of the UE on the reverse switching of video call by Access Layer AS message in the second specific embodiment.
For the scene for the reverse switching for reserving video call：UE then activates 2 bearer context PDP for being used to carry the reverse switching of video call after internet protocol multi-media sub-system (IMS, Internet Protocol Multimedia Subsystem) registration in ps domain.
The scene that video reversely switches is reserved for no special：It is switched to default bearing. For example, for UE.If MSC/MGW servers implicitly indicate to switch voice and video, MSC/MGW servers implicitly indicate that UE can carry voice and video by 2 downlink ports；Or, MSC/MGW servers implicitly indicate that ATCF/ATGW carries voice and video by 2 uplink ports.Or, MSC/MGW servers can explicitly indicate to switch voice and video by sending switching command to source RNC to UE.Now, ATCF/AGTW can distribute 2 uplink ports for UE.
Alternatively, MSC/MGW can also indicate that ATCF/ATGW service switchovers type is switching voice, such as temporarily only switch voice.So, after ATCF/ATGW completes voice switching, ATCF/ATGW initiates to set up the carrying of video again, to recover transmission of video.The uplink port distributed for ATCF/ATGW to UE, MSC/MGW servers can issue UE by switching command.Or, after UE completes voice switching, UE initiates to set up the carrying of video again, to recover transmission of video.The uplink port distributed for ATCF/ATGW to UE, MSC/MGW servers can issue UE by switching command.
Certain part in the device for describing to be related to according to the reverse switching of the video call of the embodiment of the present application below in conjunction with accompanying drawing, such as MSC/MGW servers, ATCF/ATGW and user equipment or these equipment.
As shown in figure 5, the device of the reverse switching of video call（For example, MSC/MGW servers）50 include the indicating member 52 of determining unit 51 and first.Wherein, determining unit 51 is used to determine the type of service of UE switchings and/or carrying information and/or port information for carrying service switchover type, and/or the type of service and/or carrying information and/or port information for carrying service switchover type of ATCF/ATGW switchings, wherein the service switchover type includes switching voice or switching voice and video.First indicating member 52 is used to indicate at least one in below UE information：The type of service of switching, the carrying information for carrying service switchover type, port information, and/or indicate at least one in below ATCF/ATGW information：The type of service of switching, the carrying information for carrying service switchover type, port information.
Further, the carrying information that the UE that the first indicating member 52 is indicated is used to carry the service switchover type includes the mark of 1 or 2 carrying.The port information that the UE that first indicating member 52 is indicated is used to carry the service switchover type includes uplink port.
Further, the carrying information that the ATCF/ATGW that the first indicating member 52 is indicated is used to carry the service switchover type includes the mark of 1 or 2 carrying.The port information that the ATCF/ATGW that first indicating member 52 is indicated is used to carry the service switchover type includes downlink port. In addition, except the indicating member 52 of determining unit 51 and first, the device of the reverse switching of video call（For example, MSC/MGW servers）60 can also include the indicating member 54 of first acquisition unit 53 and second.Wherein, first acquisition unit 53 is used for the decision information for obtaining service switchover type, and wherein service switchover type includes switching voice or switching voice and video.Second indicating member 54 is used for according to the decision information, indicates that UE carries out service switching according to the service switchover type, and/or indicate that ATCF/ATGW carries out business transmission according to the service switchover type., as shown in Figure 5.
Alternatively, first acquisition unit 53 obtains at least one following information：Number, the instruction according to target MME/SGSN or local network and/or objective network according to urgent call, the ability of the reverse switching of UE support video calls, the UE PDP Context having support the ability of the reverse switching of video call.
Alternatively, the second indicating member 54 is specifically for according to the decision information, explicitly indicating that UE carries out business transmission according to service switchover type progress service switching, and/or instruction ATCF/ATGW according to the service switchover type.Or, the second indicating member 54 is specifically for according to the decision information, implicitly indicating that UE carries out business transmission according to service switchover type progress service switching, and/or instruction ATCF/ATGW according to the service switchover type.
Alternatively, the second indicating member 54 is specifically in CS calling procedures or after CS call setups, indicating that UE carries out service switching according to the service switchover type.Or, the second indicating member 54 is specifically for when receiving the reverse handover request message that source RAN node is sent, indicating that UE carries out service switching according to the service switchover type.Or, the second indicating member 54 is specifically for after the reverse handoff response of target CN node transmission is received, indicating that UE carries out service switching according to the service switchover type.Or, the second indicating member 54 is specifically for after the ability of reverse switching of the UE video call of source RNC/BSC transmissions is received, indicating that UE carries out service switching according to the service switchover type.
Optionally, in addition, the second indicating member 54 is specifically for according to the reverse switching response message received from target MME/SGSN, indicating that ATCF/ATGW carries out business transmission according to the service switchover type.Or, the second indicating member 54 is specifically for according to the reverse handover request message received from source RNC/BSC, indicating that ATCF/ATGW carries out business transmission according to the service switchover type.
The embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
As shown in fig. 7, the device of the reverse switching of video call（For example, ATCF/ATGW) 70 Including the switch unit 72 of second acquisition unit 71 and first.The second acquisition unit 71 is used to obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type, and wherein service switchover type includes switching voice or switching voice and video.First switch unit 72 is used to carry out service switching according to first configured information and/or the second configured information.
Wherein, when first configured information indicates that service switchover type is switching voice and video, and/or second configured information is designated as UE and distributes 2 uplink ports.Or, when first configured information instruction service switchover type is switching voice, second configured information, which is designated as UE, which distributes 2 uplink ports, is used to recover video, or is designated as UE 1 uplink port of distribution for not recovering video.
Specifically, second acquisition unit 71 is used to obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type from the target MME/SGSN.Or, second acquisition unit 71 is used to obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type from the MSC/MGW servers.Or, second acquisition unit 71 is used to obtain the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type from the ability of the reverse switching of the UE support video calls sent.
The embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
As shown in figure 8, the device of the reverse switching of video call（For example, user equipment）80 include the 3rd acquiring unit 81 and the second switch unit 82.3rd acquiring unit 81, which is used to obtain, to be indicated the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicates the 5th configured information of the port for carrying the service switchover type, and wherein service switchover type includes switching voice or switching voice and video.Second switch unit 82 is used to carry out service switching according to the 3rd configured information, the 4th configured information or the 5th configured information.
Specifically, the 3rd acquiring unit 81 is used to obtain from MSC/MGW and indicates the 3rd configured information of service switchover type, indicates the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
Alternatively, 3rd acquiring unit 81 is used for by switching command, knows that ATCF/ATGW is the voice of its distribution or port, the 3rd configured information of instruction service switchover type or the 4th configured information for indicating the carrying for carrying the service switchover type of video from source RNC/BSC. The embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
As shown in figure 9, the device of the reverse switching of video call（For example, RNC) 90 include the 4th acquiring unit 91 and transmitting element 92.Wherein, 4th acquiring unit 91, which is used to obtain, to be indicated the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicates the 5th configured information of the port for carrying the service switchover type, and wherein service switchover type includes switching voice or switching voice and video.Transmitting element 92 is used to the 3rd configured information, the 4th configured information or the 5th configured information being sent to user equipment.
Alternatively, the 4th acquiring unit 91 can obtain from moving exchanging center MSC/media gateway MGW and indicate the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
Alternatively, the 3rd configured information, the 4th configured information or the 5th configured information can be sent to user equipment by transmitting element 92 by radio resource control RRC signaling.
The embodiment of the present application can be when video call be switched to ps domain from CS domains, by ensuring the normal transmission of voice and/or video between UE and ATCF/ATGW, so that user still obtains optimal Consumer's Experience after the reverse switching of video call.
It should be understood that, the scheme that each claim of the application is described should also regard one embodiment as, and it is characterized in combinable in claim to be, can be used as different embodiments the step of the different branches of the execution after judgment step in such as the application.
Those of ordinary skill in the art are it is to be appreciated that the unit and algorithm steps of each example described with reference to the embodiments described herein, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can realize described function to each specific application using distinct methods, but this realization is it is not considered that beyond scope of the present application.
It is apparent to those skilled in the art that, the specific work process of the system of foregoing description, device and unit clean for the convenience and cylinder of description may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can realize by another way.For example, device embodiment described above is only to show Meaning property, for example, the division of the unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.
The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in the application each embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units it is integrated in a unit.
If the function is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part or the part of the technical scheme that the technical scheme of the application substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Or processor（Processor all or part of step of each embodiment methods described of the application) is performed.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory（RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
It is described above; the only embodiment of the application, but the protection domain of the application is not limited thereto, and any one skilled in the art is in the technical scope that the application is disclosed; change or replacement can be readily occurred in, should all be covered within the protection domain of the application.Therefore, the protection domain of the application described should be defined by scope of the claims.

Claims (1)

  1. Claim
    1st, the method for the reverse switching of a kind of video call, it is characterised in that including：
    At least one in the following information of instruction user equipment：The type of service of switching, the carrying information for ^ load service switchover types, port information, and/or indicate at least one in the access conversion and control function ATCF/ access following information of transfer gateway ATGW：The type of service of switching, the carrying information for carrying service switchover type, port information, wherein the service switchover type includes switching voice or switching voice and video.
    2nd, according to the method described in claim 1, it is characterised in that
    The carrying information that the instruction user equipment is used to carry the service switchover type includes the mark of 1 or 2 carrying；Or,
    The port information that the instruction user equipment is used to carry the service switchover type includes uplink port.
    3rd, according to the method described in claim 1, it is characterised in that
    The carrying information that the instruction ATCF/ATGW is used to carry the service switchover type includes the 1 or 2 ^ mark carried；Or,
    The port information that the instruction ATCF/ATGW is used to carry the service switchover type includes downlink port.
    4th, according to the method in any one of claims 1 to 3, it is characterised in that the type of service switched in the instruction user equipment, and/or before the type of service of instruction ATCF/ATGW switchings, in addition to：
    Obtain the decision information of the service switchover type；
    According to the decision information, instruction user equipment carries out service switching according to the service switchover type, and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type.
    5th, method according to claim 4, it is characterised in that the decision information of the acquisition service switchover type includes at least one following information：
    Number, the instruction according to target mobility management entity MME/ general packet radio service technological service supporting nodes SGSN or the local network and/or objective network of the packet data protocol PDP Context having according to urgent call, the ability of the reverse switching of user equipment support video call, user equipment support the ability of the reverse switching of video call.
    6th, the method according to claim 4 or 5, it is characterised in that described according to the decision-making Information, instruction user equipment carries out service switching according to the service switchover type, and/or indicates
    ATCF/ATGW carries out business transmission according to the service switchover type to be included：
    According to the decision information, explicitly instruction user equipment carries out service switching according to the service switchover type, and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type；Or
    According to the decision information, implicitly instruction user equipment carries out service switching according to the service switchover type, and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type.
    7th, the method according to any one of claim 4 to 6, it is characterised in that the instruction UE carries out service switching according to the service switchover type to be included：
    In circuit commutative field CS calling procedures or after circuit commutative field CS call setups, instruction user equipment carries out service switching according to the service switchover type；Or
    When receiving the reverse handover request message that source Radio Access Network RAN node is sent, indicate that UE carries out service switching according to the service switchover type；Or
    After the reverse handoff response of target core network CN nodes transmission is received, indicate that UE carries out service switching according to the service switchover type；Or
    After the ability of reverse switching of the video call of user equipment of source radio network controller RNC/ base station controller BSCs transmission is received, instruction user equipment carries out service switching according to the service switchover type.
    8th, the method according to any one of claim 4 to 7, it is characterised in that the instruction ATCF/ATGW carries out business transmission according to the service switchover type to be included：
    The reverse switching response message that SGSN is received, indicates that ATCF/ATGW carries out business transmission according to the service switchover type；Or,
    According to the reverse handover request message received from source radio network controller RNC/ base station controller BSCs, indicate that ATCF/ATGW carries out business transmission according to the service switchover type.
    9th, the method for the reverse switching of a kind of video call, it is characterised in that including：
    The first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type are obtained, wherein service switchover type includes switching voice or switching voice and video；
    Service switching is carried out according to first configured information and/or second configured information.
    10th, method according to claim 9, it is characterised in that When first configured information indicates that service switchover type is switching voice and video, and/or second configured information is designated as user equipment and distributes 2 uplink ports；Or
    When first configured information instruction service switchover type is switching voice, second configured information, which is designated as user equipment, which distributes 2 uplink ports, is used to recover video, or is designated as user equipment 1 uplink port of distribution for not recovering video.
    11st, the method according to claim 9 or 10, it is characterised in that the acquisition indicates the first configured information of service switchover type and/or indicates that the second configured information of the carrying for carrying the service switchover type includes：SGSN obtains the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type；Or,
    The first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type are obtained from the moving exchanging center MSC/media gateway MGW server；Or,
    The ability of the reverse switching of the support video call sent from user equipment obtains the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type.
    12nd, the method for the reverse switching of a kind of video call, it is characterised in that including：
    Obtain and indicate the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；
    Service switching is carried out according to the 3rd configured information, the 4th configured information or the 5th configured information.
    13rd, method according to claim 12, characterized in that, described obtain indicates the 3rd configured information of service switchover type, indicates the 4th configured information of carrying for carrying the service switchover type or indicates that the 5th instruction packet of the port for carrying the service switchover type is included：
    Obtained from moving exchanging center MSC/media gateway MGW and indicate the 3rd configured information of service switchover type, indicated the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
    14th, the method according to claim 12 or 13, it is characterised in that the acquisition indicates the 3rd configured information of service switchover type, indicates the 4th of carrying for carrying the service switchover type Configured information indicates that the 5th instruction packet of the port for carrying the service switchover type is included：By switching command, know that access conversion and control function ATCF/ access transfer gateway ATGW are the voice of its distribution or port, the 3rd configured information of instruction service switchover type or the 4th configured information for indicating the carrying for carrying the service switchover type of video from source radio network controller RNC/ base station controller BSCs.
    15th, the method for the reverse switching of a kind of video call, it is characterised in that including：
    Obtain and indicate the 3rd configured information of service switchover type, indicate the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；
    3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment.
    16th, method according to claim 15, characterized in that, described obtain indicates the 3rd configured information of service switchover type, indicates the 4th configured information of carrying for carrying the service switchover type or indicates that the 5th instruction packet of the port for carrying the service switchover type is included：
    Obtained from moving exchanging center MSC/media gateway MGW and indicate the 3rd configured information of service switchover type, indicated the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
    17th, the method according to claim 12 or 13, it is characterised in that described that 3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment and included：By radio resource control RRC signaling, the 3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment.
    18th, the device of the reverse switching of a kind of video call, it is characterised in that including：
    Determining unit, for determining the type of service of user equipment switching and/or the carrying information and/or port information of service switchover type being carried for ^, and/or access conversion and control function ATCF/ accesses the type of service of transfer gateway ATGW switchings and/or carrying information and/or port information for carrying service switchover type, wherein the service switchover type includes switching voice or switching voice and video；
    First indicating member, at least one in the following information of instruction user equipment：The type of service of switching, the carrying information for carrying service switchover type, port information, and/or indicate at least one in the access conversion and control function ATCF/ access following information of transfer gateway ATGW：The type of service of switching, the carrying information for carrying service switchover type, port information.
    19th, device according to claim 18, it is characterised in that The carrying information that the user equipment that first indicating member is indicated is used to carry the service switchover type includes the mark of 1 or 2 carrying；
    The port information that the user equipment that first indicating member is indicated is used to carry the service switchover type includes uplink port.
    20th, device according to claim 18, it is characterised in that
    The carrying information that the access conversion and control function ATCF/ access transfer gateways ATGW that first indicating member is indicated is used to carry the service switchover type includes the mark of 1 or 2 carrying；The port information that the access conversion and control function ATCF/ access transfer gateways ATGW that first indicating member is indicated is used for the ^ loads service switchover type includes downlink port.
    21st, the device according to any one of claim 18 to 20, it is characterised in that also include：First acquisition unit, the decision information for obtaining service switchover type；
    Second indicating member, for according to the decision information, instruction user equipment carries out service switching according to the service switchover type, and/or indicates that access conversion and control function ATCF/ access transfer gateway ATGW carry out business transmission according to the service switchover type.
    22nd, device according to claim 21, it is characterised in that the first acquisition unit obtains at least one following information：
    Number, the instruction according to target mobility management entity MME/ general packet radio service technological service supporting nodes SGSN or the local network and/or objective network of the packet data protocol PDP Context having according to urgent call, the ability of the reverse switching of user equipment support video call, user equipment support the ability of the reverse switching of video call.
    23rd, the device according to claim 21 or 22, it is characterised in that second indicating member specifically for：
    According to the decision information, explicitly instruction user equipment carries out service switching according to the service switchover type, and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type；Or
    According to the decision information, implicitly instruction user equipment carries out service switching according to the service switchover type, and/or indicates that ATCF/ATGW carries out business transmission according to the service switchover type.
    24th, the device according to any one of claim 21 to 23, it is characterised in that second indicating member specifically for：
    In circuit commutative field CS calling procedures or after circuit commutative field CS call setups, instruction user equipment carries out service switching according to the service switchover type；Or When receiving the reverse handover request message that source Radio Access Network RAN node is sent, indicate that UE carries out service switching according to the service switchover type；Or
    After the reverse handoff response of target core network CN nodes transmission is received, indicate that UE carries out service switching according to the service switchover type；Or
    After the ability of reverse switching of the UE video call of source radio network controller RNC/ base station controller BSCs transmission is received, indicate that UE carries out service switching according to the service switchover type.
    25th, the device according to any one of claim 21 to 24, it is characterised in that second indicating member specifically for：
    According to the reverse switching response message received from target MME/SGSN, indicate that ATCF/ATGW carries out business transmission according to the service switchover type；Or,
    According to the reverse handover request message received from source RNC/BSC, indicate that ATCF/ATGW carries out business transmission according to the service switchover type.
    26th, the device of the reverse switching of a kind of video call, it is characterised in that including：
    Second acquisition unit, for obtaining the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type, wherein service switchover type includes switching voice or switching voice and video；
    First switch unit, for carrying out service switching according to first configured information and/or second configured information.
    27th, device according to claim 26, it is characterised in that
    When first configured information indicates that service switchover type is switching voice and video, and/or second configured information is designated as user equipment and distributes 2 uplink ports；Or
    When first configured information instruction service switchover type is switching voice, second configured information, which is designated as user equipment, which distributes 2 uplink ports, is used to recover video, or is designated as user equipment 1 uplink port of distribution for not recovering video.
    28th, the device according to claim 26 or 27, it is characterised in that the second acquisition unit specifically for：
    Account for
    SGSN obtains the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type；Or,
    The second instruction for indicating the first configured information of service switchover type and/or indicating the carrying for carrying the service switchover type is obtained from the moving exchanging center MSC/media gateway MGW server Information；Or,
    The ability of the reverse switching of the support video call sent from user equipment obtains the first configured information for indicating service switchover type and/or the second configured information for indicating the carrying for carrying the service switchover type.
    29th, the device of the reverse switching of a kind of video call, it is characterised in that including：
    3rd acquiring unit, the 3rd configured information that service switchover type is indicated for obtaining, the 4th configured information for indicating carrying for carrying the service switchover type or the 5th configured information for indicating the port for carrying the service switchover type, wherein service switchover type include switching voice or switching voice and video；
    Second switch unit, for carrying out service switching according to the 3rd configured information, the 4th configured information or the 5th configured information.
    30th, device according to claim 29, it is characterised in that the 3rd acquiring unit specifically for：
    Obtained from moving exchanging center MSC/media gateway MGW and indicate the 3rd configured information of service switchover type, indicated the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
    31st, the device according to claim 29 or 30, it is characterised in that the 3rd acquiring unit specifically for：
    By switching command, know that access conversion and control function ATCF/ access transfer gateway ATGW are the voice of its distribution or port, the 3rd configured information of instruction service switchover type or the 4th configured information for indicating the carrying for carrying the service switchover type of video from source radio network controller RNC/ base station controller BSCs.
    32nd, the device of the reverse switching of a kind of video call, it is characterised in that including：
    4th acquiring unit, the 3rd configured information that service switchover type is indicated for obtaining, the 4th configured information for indicating carrying for carrying the service switchover type or the 5th configured information for indicating the port for carrying the service switchover type, wherein service switchover type include switching voice or switching voice and video；
    Transmitting element, for the 3rd configured information, the 4th configured information or the 5th configured information to be sent into user equipment.
    33rd, device according to claim 32, it is characterised in that the 4th acquiring unit specifically for： Obtained from moving exchanging center MSC/media gateway MGW and indicate the 3rd configured information of service switchover type, indicated the 4th configured information of carrying for carrying the service switchover type or indicate the 5th configured information of the port for carrying the service switchover type.
    34th, the device according to claim 32 or 33, it is characterised in that the transmitting element specifically for：
    By radio resource control RRC signaling, the 3rd configured information, the 4th configured information or the 5th configured information are sent to user equipment.
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