CN102149156B - Method, system and relevant method and device for returning to CS domain to establish voice call - Google Patents
Method, system and relevant method and device for returning to CS domain to establish voice call Download PDFInfo
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- CN102149156B CN102149156B CN201110116690.3A CN201110116690A CN102149156B CN 102149156 B CN102149156 B CN 102149156B CN 201110116690 A CN201110116690 A CN 201110116690A CN 102149156 B CN102149156 B CN 102149156B
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- H04W76/00—Connection management
- H04W76/10—Connection setup
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Abstract
The embodiment of the invention relates to the field of communications, and provides a method, a system and a relevant device for returning to CS domain to establish a voice call, which comprise the steps as follows: an indication is transmitted to a mobile terminal through a network; a plot with a CS domain is reselected by the mobile terminal; moreover, a voice call is established in the CS domain of the plot. The invention solves the technical problem that the mobile terminal returns to the plot with the CS domain to establish a voice call in case that the mobile terminal stays in plot of a pure PS domain network which does not support voice call.
Description
Technical field
The present invention relates to the communications field, particularly method, system and the relevant device of audio call set up in a kind of CS of returning back to territory.
Background technology
2G/3G (Generation Mobile Telecommunication System technology/3G (Third Generation) Moblie technology, refers generally to GSM and WCDMA network) network, through deployment for many years, can be regarded a kind of comprehensive covering as to a certain extent.Nowadays, development along with technology, SAE/LTE (System Architecture Evolution/Long Term Evolution), HSPA (high-speed packet access), HSPA+ (high-speed packet access evolution) and WiMAX (micro-wave access global inter communication) network-covered are to some areas, like this, in current communication network, these networks and 2G/3G network are also deposited.For convenience of description, will only provide SAE/LTE, HSPA, HSPA+, the WiMAX etc. in PS (packet switching) territory to be referred to as pure PS territory network.
Network carrying mechanism for different, can be divided into the audio call of mobile communication following a few class:
The first kind is the session service of CS (circuit commutative field) territory carrying, as voice call;
Equations of The Second Kind is the session service of PS territory carrying, also referred to as VoIP (Voice over IP technology) class business, provides OoS (quality services) to guarantee, as the voice call of IP carrying by IMS (IP multimedia service subsystem).
For pure PS territory network, audio call can only transmit in its PS territory carrying, and IMS controls audio call by IP-based network.In 2G/3G network, audio call is to be generally carried on CS territory.
The user who makes a call is in call process, likely cross over two networks, difference due to load-bearing of mobile telecommunication business mechanism, cause moving out pure PS territory (as: SAE/LTE) network base station institute coverage when mobile terminal, while entering the 2G/3G network base station area of coverage, may there is the interruption of IMS audio call, thereby affect the continuity that user speech is called out.
In order to address the above problem, guarantee the continuity that user speech is called out, adopt at present three types of technology scheme, as follows respectively:
SRVCC (single wireless link voice continuity) technical scheme, CS over PS (CS of PS carrying) technical scheme and Redirection (reorientation) technical scheme.
Wherein: SRVCC technical scheme requires: dispose IMS; Need gateway node or the network itself of a responsible PS and the conversion of CS signaling to support PS handover, DTM characteristic.
CS over PS technical scheme has eMSC scheme and Page in LTE at present, call in 2G/3G CS scheme.
Wherein eMSC (MSC of evolution) scheme requires to dispose eMSC (mobile switching centre of evolution).
The renewal process of Page in LTE, call in 2G/3G (LTE paging, 2G/3G set up calling) scheme based on TA/LA combination, triggers the renewal of LA in TA renewal process.The beep-page message of all called audio calls is all from the MSC of 2G/3G.This class beep-page message is forwarded to MME by MSC, and by MME, is issued to eNB again, and eNB also no longer continues to issue, but switches to 2G/3G network by PS handover, in the CS territory of 2G/3G network, sets up and calls out.
Scheme after Page in LTE, call in 2G/3G enter requires: network support PS handover and DTM; The mapping relations that TA/TA list and LA are limited, TA/TA list can not cross over the LA of two and plural MSC administration.In the early deployment stage of LTE, IMS may not dispose, and most GSM networks are not supported PS handover and DTM.And TA/TA list and the limited mapping relations of LA have limited the flexibility that LTE disposes.For this reason, proposed a kind of audio call solution that does not rely on above-mentioned constraints, return back to CS territory the support of SAE/LTE early deployment stage to audio call is provided.And, adopt called roaming retry technology (MT roaming retry call), solved the problem that TA/TA list and LA can not realize overlapping covering completely.
Summary of the invention
Method, system and relevant device that the embodiment of the present invention provides a kind of CS of returning back to territory to set up audio call, move out PSYu community to improve mobile terminal, enter the continuity that while having CSYu community, user speech is called out.
The embodiment that the embodiment of the present invention provides is achieved through the following technical solutions:
Return back to CS territory and set up a method for audio call, comprise step:
Mobile terminal receives the first indication that network sends, and the described mobile terminal of described the first indication indication is established to CS territory by audio call;
According to described the first indication, described mobile terminal gravity treatment is to having CSYu community;
Described mobile terminal is set up audio call in the CS territory of described community;
Wherein, the first indication that described in the system message of described mobile terminal by Cell Broadcast CB or dedicated signaling message sink, network sends.
The embodiment of the present invention also provides a kind of CS of returning back to territory to set up the system of audio call, comprising:
The first indicating member, system message or dedicated signaling message to mobile terminal to mobile terminal by Cell Broadcast CB send the first indication that audio call is established to CS territory;
Gravity treatment unit, according to the first described indication, described mobile terminal gravity treatment is to having CSYu community;
Audio call is set up unit, for described mobile terminal is set up to audio call in the CS territory of described community.
Embodiment of the present invention technique effect is: by network, to mobile terminal, send indication, described mobile terminal gravity treatment is to having CSYu community; And set up audio call in the CS territory of described community.Solved mobile terminal and resided in the community of pure PS territory network, the described pure PS territory network situation that support voice is called out, mobile terminal return back to has the technical problem that language calling is set up in CSYu community.
Accompanying drawing explanation
The system architecture of the option A that Fig. 1 provides for the embodiment of the present invention;
The system architecture of the option b that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is that in the option b of embodiment mono-provided by the invention, TA renewal process triggers and complete structure and the flow chart that LA upgrades;
Whether Fig. 4 (a) and Fig. 4 (b) transfer to structure and the flow chart that the CS territory of 2G/3G community is set up for the network indicating mobile terminal audio call of embodiment bis-provided by the invention;
Fig. 5 is that caller audio call flow process figure is set up in the mobile terminal gravity treatment of the embodiment of the present invention three to 2G/3G community;
Fig. 6 is the LTE network cell change that network enabled is not controlled of the embodiment of the present invention four, and the flow chart of caller audio call is set up in mobile terminal gravity treatment to 2G/3G community;
Fig. 7 is that the cell change mobile terminal of the LTE network support network control of the embodiment of the present invention four is set up the flow chart of caller audio call to 2G/3G community;
Fig. 8 is that called audio call flow process figure is set up in the autonomous gravity treatment of the mobile terminal of the embodiment of the present invention five to 2G/3G community;
Fig. 9 is that the embodiment of the present invention six LTE network control mobile terminal gravity treatments are set up called audio call to 2G/3G community;
The VMSC-R that Figure 10 provides for the embodiment of the present invention sets up called audio call flow process figure as the LTE network control mobile terminal gravity treatment of CS agent way back-to-back to 2G/3G community;
The structural representation of the system of audio call is set up in a kind of CS of returning back to territory that Figure 11 provides for the embodiment of the present invention;
The another kind that Figure 12 provides for the embodiment of the present invention return back to the structural representation that the system of audio call is set up in CS territory;
A kind of system configuration schematic diagram of realizing called flow that Figure 13 provides for the embodiment of the present invention.
Embodiment
The object of the invention process profit is: when mobile terminal is during in LTE network coverage, mobile terminal is used virtual LA to the registration of CS territory, thereby while guaranteeing that mobile terminal resides in LTE network, mobile terminal still can receive the audio call in CS territory.
Specifically, when mobile terminal resides in LTE network, virtual LA (lane place) region is similar to and is equal to the region at the LA of Same Physical position 2G/3G.Because the LA of 2G/3G is comprised of 2G/3G community, and form for the YouLTE community, virtual LA region of LTE network, so when mobile terminal resides in LTE network, the virtual LA region that YouLTE community forms and the LA region being comprised of 2G/3G community in same position region are not exclusively overlapping.
When mobile terminal resides in LTE network, a MSC (mobile switching centre) is selected in the virtual LA region forming according to YouLTE community.But mobile terminal return back on 2G/3G community, this 2G/3G community may belong to another one LA, thereby mobile terminal may be selected another MSC.
Depend on and whether need MSC to upgrade to support MSC to the transmission of the audio call beep-page message of MME (mobile management entity), can have option A and option b two schemes.Option A need to upgrade to support to send audio call beep-page message to MME to MSC.Option b increases a Mobility proxy (the logic function body of mobility agent) logic function body and be responsible for forwarding LA renewal and audio call beep-page message between MSC and MME.
Angle from MSC, Mobility proxy is a BSS/RNS (base station sub-system/infinite network subsystem), all and TA/TAlist exists the LA of mapping relations to comprise the BSS/RNS that this is simulated by Mobility proxy, and these TA/TA list belong to the MME being connected with this Mobility proxy.By configuration LA, add this BSS/RNS being simulated by Mobility proxy, MSC can carry out the renewal of LA and send audio call beep-page message according to the flow process of standard.If mobile terminal wants gravity treatment to set up called audio call to 2G/3G community, need to forward audio call beep-page message by this two schemes, if mobile terminal wants gravity treatment to set up caller audio call to 2G/3G community, do not need above-mentioned two schemes to forward audio call beep-page message.The system architecture of these two schemes respectively as shown in Figure 1, Figure 2.
For each LTE community, there is TA/TA list and the LA corresponding with it in the method for concrete configuration, the BSS/RNS that each LA that will upgrade by Mobility proxy comprises this Mobility proxy simulation, does not revise like this gsm protocol standard and can realize that LA upgrades and audio call beep-page message arrives mobile terminal through LTE forwarded.Interface between Mobility proxy and MME is S3 ' (the S3 interface of simplification, only transmitting LA upgrades and beep-page message), when mobile terminal (terminal) switches from SAE/LTE network to 2G/3G network or when switching from 2G/3G network to SAE/LTE network, all switching message are all passed through Mobility proxy, and Mobility proxy is always on the path of S3 ' interface.In addition, the interface between Mobility proxy and MME can be also similar GS ' (Gs like, the Gs interface of simplification only transmit LA and upgrade and beep-page message) interface.
For convenience of description, define two logic entity: VMSC-R, VMSC-S, wherein:
VMSC-R, registers VMSC (registration Visited Mobile Switching Center), and mobile terminal is updated in this VMSC (Visited Mobile Switching Center) at the last LA of LTE network.
VMSC-S, serves VMSC (voice call service Visited Mobile Switching Center), and after 2G/3G community is arrived in mobile terminal gravity treatment, audio call is by this VMSC (Visited Mobile Switching Center) foundation and as anchor MSC (grappling MSC).
The LTE network cell change that network enabled is controlled (comprise towards CS territory, hereinafter, except specified otherwise, all comprise CS territory) can be by system information or the dedicated signaling notice mobile terminal of broadcast.The method of notifying by the system information of broadcast, makes the cell change of all mobile terminals in community all by network control.Adopt the mode of dedicated signaling, as switched message, measuring control message, cell change/updating message, beep-page message etc., can realize and notify the cell change of specific mobile terminal all by network control.
According to above-mentioned technical scheme, several specific embodiments are provided below, with clearer, understand technique scheme.
Embodiment mono-: in order to reduce mobile terminal from LTE cell reselection to 2G/3G community and to set up the time delay of audio call, adopt and in TA renewal process, trigger and upgrade the method for LA.Option A and option b all do not require that TA/TA list and LA exist limited mapping relations.For option A, implementation method similarly to the prior art.For option b, the message that LA upgrades is forwarded between MME and MSC by Mobility proxy, and from the angle of MSC, the BSS/RNS of Mobility proxy simulation is included in this LA, and the renewal process of TA and LA is as Fig. 3.
When TA renewal process triggers, mobile terminal judges whether to carry out the renewal of LA according to the trigger condition of LA, if complete the renewal of LA in the process that need to upgrade at TA.In LA renewal process, interacting message between MME and Mobility passes through S3 ' interface, mutual by the A/Iu interface (this interface only transmits the message of LA renewal process and the beep-page message of audio call) of simplification between VMSC-R and Mobility proxy.
Compared with prior art, the advantage of option b is, owing to increasing logic function body Mobility proxy, has avoided the modification to existing 2G/3G standard criterion.
Embodiment bis-: reside in the CS territory whether mobile terminal in LTE community transfer to 2G/3G community by the audio call of the system message of broadcast or special-purpose notified this community of signaling message and set up audio call, if so, be the CS territory that caller or called audio call are all transferred to 2G/3G community.As Fig. 4 (a), the method for notifying by the system information of broadcast, makes the audio call of all mobile terminals in GaiLTE community all will transfer to 2G/3G community or not shift.
As Fig. 4 (b), adopt the mode of dedicated signaling, as switch message, measurement control message, cell change/updating message, beep-page message etc., can realize and notify specific mobile terminal that voice call transfer is set up to audio call or not gravity treatment to the CS territory of 2G/3G.
Embodiment tri-: mobile terminal resides in LTE community, mobile terminal will be initiated the audio call of caller, whether what according to the system message by broadcast or dedicated signaling before, obtain is established to the indication in the CS territory of 2G/3G community about audio call, determines whether to transfer to 2G/3G community.The mobile terminal of LTE_IDLE state is based upon the audio call of caller the process in the CS territory of 2G/3G community, as shown in Figure 5, specifically comprises step:
51, mobile terminal, at LTE_IDLE (idle condition) state, be initiated caller audio call.
52, the system message of broadcast or dedicated signaling indicate audio call will be established to the CS territory of 2G/3G community before, and mobile terminal gravity treatment, to 2G/3G community, monitors 2G/3G cell broadcast messages resident Dao Gai community.
If the LA of 52a persistent district triggers normal LA renewal process, first carry out normal LA renewal process.
53, mobile terminal is initiated the process of establishing of caller audio call in the CS territory of 2G/3G community.
Embodiment tetra-: whether what according to the system message by broadcast or dedicated signaling before, obtain is established to the indication in the CS territory of 2G/3G about audio call, determines whether gravity treatment is to 2G/3G community.According to the LTE network cell change whether network enabled is controlled, the NACC to GERAN class (comprises towards the system information in CS territory, and mobile terminal can carry out the cell reselection of network control under LTE_IDLE and LTE_ACTIVE two states) with to the Inter-RAT cell order of UTRAN, mobile terminal caller audio call is based upon 2G/3G community CS territory process respectively as shown in Figure 6, Figure 7.
Fig. 6 is the LTE network cell change that network enabled is not controlled, and mobile terminal gravity treatment is set up caller audio call to 2G/3G community.Comprise step:
61, mobile terminal is when LTE_ACTIVE state, and mobile terminal will be initiated caller audio call.
62, the system message of broadcast or dedicated signaling indicate audio call will be established to the CS territory of 2G/3G before, and mobile terminal is known the LTE network cell change that network enabled is not controlled, the autonomous gravity treatment of mobile terminal, to 2G/3G community, monitors broadcast the resident Dao Gai community of 2G/3G community.
If the LA of 62a persistent district triggers normal LA renewal process, first carry out normal LA renewal process.
63, mobile terminal is initiated the process of establishing of caller audio call in the CS territory of 2G/3G community.
Fig. 7 is the cell change of LTE network support network control, and the gravity treatment of LTE networking command mobile terminal is set up caller audio call to 2G/3G community.Comprise step:
71, mobile terminal, at LTE_ACTIVE state, be initiated caller audio call.
72, the system information of broadcasting before or dedicated signaling indication audio call will be established to the CS territory of 2G/3G, and mobile terminal is known the cell change of LTE network support network control.Mobile terminal notice LTE network will be initiated caller audio call, and 2G/3G community is arrived in the gravity treatment of LTE networking command mobile terminal, and in command messages, carries the information of Target cell.
If the LA of 72a Target cell triggers normal LA renewal process, first carry out normal LA renewal process.
73, mobile terminal is initiated the process of establishing of caller audio call in the CS territory of 2G/3G community.
Embodiment five: for called audio call, whether what according to the system message by broadcast or dedicated signaling before, obtain is established to the indication in the CS territory of 2G/3G community about audio call, determines whether gravity treatment is to 2G/3G community.The beep-page message of called audio call can be according to such scheme A: directly by Gslike interface, send to MME; Also can be according to such scheme B: first this beep-page message sends to Mobility proxy by the A/Iu interface of simplifying, then Mobility proxy passes through S3 ' interface again and is forwarded to MME.
Behind the 2G/3G community of arriving according to gravity treatment, whether VMSC-R is identical with VMSC-S, and network side determines whether to adopt MT roaming retry call method (called roaming retry technology).If identical, use normal called flow to set up audio call, otherwise use MT roaming retry call method or B2B CSUA method (back-to-back CS agent way, the method is introduced in embodiment seven) to set up called audio call, as shown in Figure 8.Fig. 8 is that the flow process of called audio call is set up in the autonomous gravity treatment of mobile terminal to 2G/3G community.Specifically comprise step:
If 81 according to option A, VMSC-R sends audio call beep-page message to MME by Gs-like interface.If according to option b, by 81a and two steps of 81b, beep-page message is sent to MME.
81a, according to option b, in each LTE community, there is TA/TA list and the LA corresponding with it, the LA that carries out position renewal to VMSC-R through Mobility proxy comprises the virtual BSS/RNS of this Mobility proxy, VMSC-R sends paging by the LA that standardized mode is used to mobile terminal to update, and this beep-page message sends audio call beep-page message to Mobility proxy by the A/Iu interface of simplifying.
81b, according to option b, Mobility proxy passes through S3 ' interface audio call beep-page message is forwarded to MME.
82, mobile terminal receives the audio call beep-page message from network side.
83,, according to the CS territory that will transfer to 2G/3G by system message or the dedicated signaling indication audio call of broadcast before, gravity treatment is to 2G/3G community, and system message resident this Target cell of arriving of monitoring Cell Broadcast CB.
If the LA of 84 Target cells triggers normal LA renewal process, carry out the renewal of LA.LA after renewal belongs to VMSC-R, and VMSC-R is identical with VMSC-S in this case, goes to step 85.
If the LA of 84a Target cell triggers normal LA renewal process, carry out the renewal of LA.LA after renewal belongs to VMSC-S, and VMSC-R is different from VMSC-S in this case, forwards step 85a to.
85, mobile terminal may send paging corresponding message to network side in 2G/3G community.VMSC-R is identical with VMSC-S, uses normal called audio call flow process to set up this audio call in the CS territory of 2G/3G community.
85a, mobile terminal may send paging corresponding message to network side in 2G/3G community.VMSC-R is different from VMSC-S, uses MT roaming retry call method or B2B CS UA method (back-to-back CS agent way, the method is introduced in embodiment seven) to set up this audio call in the CS territory of 2G/3G.
Embodiment six: for called audio call, whether what according to the system information by broadcast or dedicated signaling before, obtain is established to the indication in the CS territory of 2G/3G community about audio call, determines whether gravity treatment is to 2G/3G community.And, the cell change that LTE network indicates its network enabled to control.Mobile terminal is transferred to 2G/3G community by network control after receiving audio call beep-page message, and then this called audio call is based upon the CS territory of 2G/3G community.
Behind the 2G/3G community of arriving according to gravity treatment, whether VMSC-R is identical with VMSC-S, and network side determines whether to adopt MT roaming retry call method or B2B CS UA method.If identical, use normal called flow to set up audio call, otherwise use MT roaming retry call method or B2B CS UA method to set up called audio call, as shown in Figure 9.Fig. 9 is that the gravity treatment of LTE network control mobile terminal is set up called audio call to 2G/3G community, specifically comprises step:
If 91 according to option A, the beep-page message that VMSC-R sends audio call by Gs like interface is to MME.If according to option b, by 91a and two steps of 91b, beep-page message is sent to MME.
91a, according to option b, mapping relations at each LTE cell configuration TA/TA list and LA, the LA that carries out position renewal to VMSC-R through Mobility proxy comprises the virtual BSS/RNS of this Mobility proxy, VMSC-R sends paging by the LA that standardized mode is used to mobile terminal to update, and this beep-page message sends audio call beep-page message to Mobility proxy by the A/Iu interface of simplifying.
91b, according to option b, Mobility proxy passes through S3 ' interface audio call beep-page message is forwarded to MME.
92, MME sends to eNB (base station of evolution) by the beep-page message of audio call.
93, eNB resolves after this beep-page message processing, and this message is sent to mobile terminal.
94, according to before system information or dedicated signaling indication audio call by the broadcast CS territory that will be established to 2G/3G community, and the cell change of network support network control.Wait for the cell change order that eNB sends, then mobile terminal gravity treatment is to the 2G/3G community of network appointment, resident to this Target cell.
If the LA of 95 Target cells triggers normal LA renewal process, carry out the renewal of LA.LA after renewal belongs to VMSC-R, and VMSC-R is identical with VMSC-S in this case, forwards step 96 to.
If the LA of 95a Target cell triggers normal LA renewal process, carry out the renewal of LA.LA after renewal belongs to VMSC-S, and VMSC-R is different from VMSC-S in this case, forwards step 96a to.
96, mobile terminal may send paging corresponding message to network side in 2G/3G community.VMSC-R is identical with VMSC-S, uses normal called audio call flow process to set up this audio call in the CS territory of 2G/3G community.
96a, mobile terminal may send paging corresponding message to network side in 2G/3G community.VMSC-R is different from VMSC-S, uses MT roaming retry call method or B2B CS UA method to set up this audio call in the CS territory of 2G/3G community.
Embodiment seven: for called audio call, mobile terminal according to before system information by broadcast or dedicated signaling obtain about audio call, whether be established to the indication in the CS territory of 2G/3G community, determine whether gravity treatment is to 2G/3G community.The process that called audio call beep-page message sends to MME from VMSC-R is identical under LTE_IDLE state with mobile terminal.
If the LTE network cell change that network enabled is not controlled, arrive the NACC (change of network assistance re-selecting cell) of GERAN class and to the Inter-RAT cellorder (the cell change order between wireless access technology) of UTRAN (general land wireless receiving net), the mobile terminal of LTE_ACTIVE state is received after called audio call beep-page message identical with the processing of LTE_IDLE state, otherwise, the mobile terminal of LTE_ACTIVE state is transferred to 2G/3G community by network control after receiving called audio call beep-page message, then in the CS territory of 2G/3G community, set up called audio call, as shown in Figure 9.
Behind the 2G/3G community of arriving according to gravity treatment, whether VMSC-R is identical with VMSC-S, and network side determines whether to adopt B2B CS UA technology.If identical, use normal called flow to set up audio call, otherwise use B2B CS UA technology to set up called audio call.As shown in figure 10.To be VMSC-R set up called audio call flow process figure as the LTE network control mobile terminal gravity treatment of CS agent way back-to-back to Figure 10 to 2G/3G community, specifically comprises step:
101-104, mobile terminal are current in LTE network, now VMSC-R (being eMSC) service mobile terminal.When mobile terminal is when called, GMSC (GMSC (gateway mobile switching center)) is to information such as HLR (home location server) inquiry MSRN.
105, GMSC sends IAM (initial address message, i.e. MSRN) message to VMSC-R according to MSRN (mobile communication station roaming number).
106, VMSC sends out beep-page message by LTE network to mobile terminal.
107-109, mobile terminal receive after beep-page message, according to the CS territory that system information or the dedicated signaling indication audio call by broadcast will be established to 2G/3G community before, and the cell change of the network support network control at mobile terminal place.Wait for the cell change order that eNB sends, mobile terminal gravity treatment is afterwards to 2G/3G community resident this Target cell of arriving of network appointment.
Normal LA renewal process is triggered in mobile terminal access 2G/3G Target cell, carries out the renewal of LA, and the LA after renewal belongs to VMSC-R.If VMSC-R is identical with VMSC-S, mobile terminal sends page-response message in 2G/3G community to network side, uses normal called audio call flow process to set up this audio call in the CS territory of 2G/3G.
If VMSC-R is different from VMSC-S, go to step 110.
110-112, HLR receive after LAU (location area updating) the update request message of mobile terminal, send Cancel Location (canceling position district message) to VMSC-R, VMSC-R sends corresponding Cancel Location ACK (canceling position district response message) to HLR.Meanwhile, VMSC-R stops paging timer.
113,118-120, VMSC-R are to information such as HLR inquiry MSRN.
115, HLR waits until that the LAU of mobile terminal just can send PRN (Packet Radio Network) query messages to VMSC-S after being updated successfully.
114, the LAU process of 116-117, mobile terminal.
121, VMSC-R obtains MSRN ' according to inquiry and sends IAM message to VMSC-S.
122, VMSC-S may need to wait for that LAU process finishes the rear process that just can make a call.
123-125, network and mobile terminal are carried out common called flow.
If in method, GMSC (GMSC (gateway mobile switching center)), VMSC-R and VMSC-S support BICC (cell change of network assistance) agreement above, user's face of the calling of mobile terminal can be directly from GMSC to VMSC-S.
In addition, the flow process of said method has just provided a kind of message flow order that may describe, is not limited to the flow process of said method in reality.
In addition, said method is equally applicable to the following scene of any network: mobile terminal is being processed called flow, and the situation that its webserver of processing called flow changes occurs.For example, because lane place (LA) MSC causing that changes changes, thus the call exception occurring.
To returning back to CS territory, set up the method for audio call and to return back to the method for setting up the configuration LA/TA list of method of audio call and the method for TA corresponding relation and realizing called flow in CS territory and be described in detail in order to realize above, the embodiment of the present invention also provides the system that CS territory is set up the system of audio call and realized called flow that return back to.
The system of audio call is set up in a kind of CS of returning back to territory that Figure 11 provides for the embodiment of the present invention, and with reference to this figure, this system comprises:
The first indicating member 131, sends the first indication to mobile terminal; This first indicating member is sent the mobile terminal sound call setup residing in community is indicated to first of CS territory by the system message of Cell Broadcast CB; Or
By dedicated signaling message, send the mobile terminal residing in community is established to audio call to first indication in CS territory;
Gravity treatment unit 132, first indication of setting up according to described audio call, by described mobile terminal gravity treatment to thering is CSYu community;
Audio call is set up unit 133, for described mobile terminal is set up to audio call in the CS territory of described community.
Further, this system also comprises the second indicating member 134, sends the second indication of cell change of supporting audio call to be established to the network control in CS territory.
The 3rd indication receiving element 135, for receiving the 3rd indication of setting up audio call of audio call beep-page message, this beep-page message carrys out automatic network, or
Mobile terminal receive is initiated the 3rd indication that audio call is set up.
The another kind providing as the embodiment of the present invention return back to the system that audio call is set up in CS territory, and referring to Figure 12, this system comprises:
MSC 136, by first interface, send audio call beep-page message to logical functional entity Mobility proxy 137;
Logical functional entity Mobility proxy 137, sends to MME 138 by the audio call beep-page message receiving by the second interface;
MME 138, and described audio call beep-page message is sent to eNB 139;
ENB 139, receive and resolve and process described beep-page message, and send to mobile terminal 140; Specifically comprise: if the cell change of the network control in CS territory is supported audio call to be established in the resident network indication of mobile terminal 140, eNB 139 sends cell change order according to described audio call beep-page message;
Mobile terminal 140 according to described cell change order gravity treatment to thering is CSYu community, resident to this Target cell.
Triggering updating block 141 triggers normal LA renewal process for the LA of described Target cell, carries out the renewal of LA;
Mobile terminal 140, sends page-response message to network side having CSYu community, in the CS territory with CSYu community, sets up this audio call.
Mobile terminal 140, adopts B2B CS UA method to set up called audio call, or uses B2BCS UA method (back-to-back CS agent way, the method is introduced in embodiment seven) to set up called audio call.
In order better to realize object of the present invention, the embodiment of the present invention also provides a kind of system that realizes called flow, referring to Figure 13, comprising:
First network server 142, provides the service of the called session of mobile terminal;
Second network server 143, in processing described called session flow process, for by mobile terminal 144 to network registry, and notify described first network server to cancel the log-on message of described mobile terminal 144, be then initiated to the called flow of described mobile terminal 144.Described called flow in CS network, described first network server WeiMSC mobile switching centre, described second network server is home location server HLR or home subscriber subscribed services device HSS.
Above-mentioned method, system and the configuration LA/TA list of called flow and the method for TA corresponding relation of realizing is also not limited to application in the present invention, also can be applied in other occasion.
A kind of CS of the returning back to the territory above embodiment of the present invention being provided is set up method, the system of audio call and is realized the method that realizes called flow, system and the configuration LA/TA list of the object of the invention and the method for TA corresponding relation, be described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, the content of this specification embodiment should not be construed as limitation of the present invention.
Claims (4)
1. return back to circuit CS territory and set up a method for audio call, it is characterized in that, comprising:
LTE network sends the described mobile terminal of indication by dedicated signaling to mobile terminal and audio call is established to the indication in the CS territory of 2G/3G;
Described LTE network is indicated the cell change of described LTE network support network control; So that described mobile terminal is set up audio call in the CS territory of described 2G/3G.
2. return back to circuit CS territory and set up a method for audio call, it is characterized in that, comprising:
Mobile terminal described in the indication that mobile terminal reception LTE network sends by dedicated signaling is established to audio call the indication in the CS territory of 2G/3G;
Described mobile terminal receives the indication of the cell change of described LTE network support network control;
Described mobile terminal is set up audio call in the CS territory of described 2G/3G.
3. return back to CS territory and set up a device for audio call, it is characterized in that, comprising:
For send the module of the indication in the CS territory of indicating described mobile terminal audio call to be established to 2G/3G to mobile terminal by dedicated signaling;
Be used to indicate the cell change of LTE network support network control, so that described mobile terminal is set up the module of audio call in the CS territory of described 2G/3G.
4. return back to circuit CS territory and set up a device for audio call, it is characterized in that, comprising:
For receiving indicating mobile terminal that LTE network sends by dedicated signaling, audio call is established to the module of indication in the CS territory of 2G/3G;
For receiving the module of indication of the cell change of described LTE network support network control;
For set up the module of audio call in the CS territory of described 2G/3G.
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| CN201110116690.3A CN102149156B (en) | 2007-12-29 | 2008-11-14 | Method, system and relevant method and device for returning to CS domain to establish voice call |
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| CN200710307877.5 | 2007-12-29 | ||
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| CN201110116690.3A CN102149156B (en) | 2007-12-29 | 2008-11-14 | Method, system and relevant method and device for returning to CS domain to establish voice call |
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| CN2008101762280A Division CN101472349B (en) | 2007-12-29 | 2008-11-14 | Method, system and correlation method and equipment for establishing voice call backing to CS domain |
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| CN101964965B (en) | 2009-07-23 | 2013-01-09 | 华为技术有限公司 | Method, device and system for returning voice call to circuit switching domain |
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| CN102769932B (en) * | 2011-05-05 | 2015-07-08 | 华为技术有限公司 | Method and device used for data transmission in circuit domain backspace |
| WO2012106896A1 (en) * | 2011-07-18 | 2012-08-16 | 华为技术有限公司 | Voice fallback method and apparatus |
| CN103096289B (en) * | 2011-11-02 | 2017-12-12 | 邳州高新区生物医药研究院有限公司 | Location updating method, apparatus and system |
| EP2810479A1 (en) * | 2012-01-31 | 2014-12-10 | Telefonaktiebolaget L M Ericsson (publ) | Cs/ps coordination for csfb/srvcc |
| WO2014067143A1 (en) * | 2012-11-02 | 2014-05-08 | 华为技术有限公司 | Method, device and system for switching to circuit switch domain |
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| CN104080134A (en) * | 2013-03-25 | 2014-10-01 | 中国移动通信集团广东有限公司 | Circuit domain fallback processing method and device, multi-mode terminal and system |
| CN103702309B (en) * | 2013-12-23 | 2017-02-15 | 展讯通信（上海）有限公司 | Multimode wireless terminal and location area updating method thereof |
| US10129794B2 (en) * | 2014-03-14 | 2018-11-13 | Apple Inc. | Returning to a first network from a second network after premature termination of a circuit switched fallback voice call |
| EP3272165B1 (en) * | 2015-03-18 | 2020-02-12 | Telefonaktiebolaget LM Ericsson (PUBL) | Apparatus and methods for paging |
| CN105722158B (en) * | 2016-01-29 | 2019-11-12 | 宇龙计算机通信科技(深圳)有限公司 | Voice call method, voice calling device and terminal |
| CN113810419B (en) * | 2016-11-09 | 2023-09-19 | 联发科技股份有限公司 | Method for enhancing multimedia call control, base station and user equipment thereof |
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| CN109451549B (en) * | 2019-01-03 | 2021-09-14 | 中国联合网络通信集团有限公司 | Voice backspacing method and device and terminal equipment |
| CN114501559B (en) * | 2020-11-13 | 2024-10-15 | 北京小米移动软件有限公司 | Calling method and device |
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| US20060109819A1 (en) * | 2004-11-22 | 2006-05-25 | Marin James S | Method and apparatus for inter-system active handoff of a hybrid subscriber unit |
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| ES2837465T3 (en) * | 2005-03-17 | 2021-06-30 | Ericsson Ab | Method and apparatus for circuit-switched multimedia subsystem voice continuity |
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| CN100583843C (en) * | 2005-08-08 | 2010-01-20 | 华为技术有限公司 | Control method and system of session route path |
| CN100496159C (en) * | 2006-06-02 | 2009-06-03 | 华为技术有限公司 | Method and system for switching double-transmission mode terminal in mobile telecommunication network |
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| WO2009089745A1 (en) | 2009-07-23 |
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| BRPI0821669A2 (en) | 2015-06-16 |
| CN102149156A (en) | 2011-08-10 |
| CN101472349B (en) | 2011-06-01 |
| BR122015026582B1 (en) | 2018-02-27 |
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