CN101577878A - Method for processing voice service continuity switching failure - Google Patents
Method for processing voice service continuity switching failure Download PDFInfo
- Publication number
- CN101577878A CN101577878A CNA2008101736676A CN200810173667A CN101577878A CN 101577878 A CN101577878 A CN 101577878A CN A2008101736676 A CNA2008101736676 A CN A2008101736676A CN 200810173667 A CN200810173667 A CN 200810173667A CN 101577878 A CN101577878 A CN 101577878A
- Authority
- CN
- China
- Prior art keywords
- message
- session
- scc
- access channel
- notification message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method for processing voice service continuity switching failure. The method comprises the following steps that: after UE performs voice service continuity switching and fails to switch a session from LTE/SAE network access to CS domain access, the UE or a enhanced MSC sends a notification message for returning to an original access channel to an SCC AS; and the SCC AS connects bearing resources of the session and remote session bearing resources of the session, which are established between the UE and the SCC AS before the voice service continuity switching is performed, and enables the UE to return to the original access channel to perform the session. The method has the advantages of solving the problem that the UE needs to re-establish a session Leg when the UE cannot successfully switch the session from the LTE/SAE network access to the CS domain access and needs to return to the original access channel, saving communication resources and reducing the complexity of user equipment.
Description
Technical field
The present invention relates to the communications field, the processing method when relating in particular to a kind of voice business continuity handoff failure.
Background technology
In order to guarantee that speech business is at circuit (Circuit Switched, be called for short CS) territory and IP (network interconnection agreement, Internet Protocol, be called for short IP) IP multimedia subsystem, IMS (IP Multimedia Core NetworkSubsystem, abbreviation IMS) continuity between the territory, solution as shown in Figure 1 for traditional voice business continuity (Voice CallContinuity is called for short VCC).
Wherein, dual-mode user device (User Equipment, be called for short UE) at CS territory and IMS network all successfully after the registration, when UE in the CS territory or IMS network when initiating speech business, all anchor to professional and session service application server for continuity (the Service Centralization andContinuity Application Server of centralized control of IMS network, be called for short SCC AS) in, this moment, UE had two signs that SCC AS is known:
1) sign (Session Transfer URI is called for short STI) is switched in session, is used for expression user conversation is switched to the IMS network at operation layer from the CS territory, perhaps switches between packet domain (PS territory);
2) session Handover Number (Session Transfer Number is called for short STN) is used for expression user conversation is switched to the CS territory at operation layer from the IMS network.
Switch to the PS territory and insert when UE prepares a session of having set up inserted from the CS territory, perhaps insert from a PS territory when switching to another PS territory and inserting, UE carries the STI sign in the IMS network, SCC AS is initiated a session request; After receiving this conversation request, SCC AS switches to IMS network at operation layer from the CS territory with this session, perhaps switches to another PS territory from a PS territory.
When UE has initiated speech business at the IMS network, when preparation switches to the CS territory from the IMS network, UE uses STN as called number in the CS territory, SCC AS is initiated a session request, after SCC AS receives this conversation request, the speech business of correspondence is switched to the CS territory from the IMS network, thereby finish whole switching.
In Fig. 1, the session to SCC AS that UE is set up by the IMS network is called source session branch (source session Leg), this section session was the source session when expression switched to the CS territory from the IMS network, and the session to SCC AS that UE is set up by the CS territory is called CS session branch (CS session Leg); SCC AS is called far-end session Leg to the session of called UE.
Described above is that traditional VCC realizes principle.Wherein, UE is a dual-mode terminal, need support Dual Radio (dual-mode dual-standby) simultaneously, promptly simultaneously can carry out audio call at IMS network and CS territory.
Development along with network architecture flattening, and multiple high-speed wideband moves the appearance of access way, the mobile communication standard tissue has proposed to be called as LTE/SAE (Long Term Evolution/SystemArchitecture Evolution, Long Term Evolution/System Architecture Evolution) next generation network framework, this network architecture makes the wireless communication system of evolution that higher transmission rate can be provided, shorter transmission delay, and has a lower cost, support 3GPP (3rd Generation Partnership Project simultaneously, third generation partner program) mobility between the inner connecting system, and the mobility between 3GPP connecting system and the non-3GPP connecting system etc.Simultaneously, LTE/SAE also will support original VCC function as a kind of access means of IMS network.
Yet, because UE battery power consumption under the bimodulus pattern is very big, and LTE/SAE itself has powerful reasons such as mobility management capabilities, single wireless channel (Single Radio) voice business continuity (Single Radio Voice Call Continuity is called for short SRVCC) technology has been proposed.The principle Organization Chart of the scheme of realization SRVCC as shown in Figure 2 at present.
Among Fig. 2 there be the SAE related network elements:
E-UTRAN (Evolved UTRAN, the universal land radio access web of evolution): i.e. the wireless access network of evolution is follow-on wireless access network, and higher up-downgoing speed can be provided, lower transmission delay and more reliable wireless transmission.
MME (Mobility Management Entity, Mobility Management Entity): be the chain of command functional entity, be in charge of and store the UE context (such as UE sign/user ID, mobility management states, user security parameters etc.), for the user distributes temporary mark, and when quartering at corresponding tracing area or network, is responsible for UE this user is carried out authentication.
SAE GW (SAE gateway): be the user plane functions entity, be responsible for the user face data route and handle, be divided into two kinds of Serving and PDN.Serving SAE GW (be called for short gateway, or SGW) is mobile anchor point between SAE system and traditional 3GPP system and the mobile anchor point between the E-UTRAN; PDN GW (packet data network gateway) be used to the terminate downlink data of the UE that is in idle state is initiated paging when the downlink data that mails to UE arrives, and the context of management and storage UE, such as IP bearer service parameter and network internal routing iinformation etc.
Among Fig. 2, the 2G/3G mobile network comprises following network element:
Wireless access network comprises GERAN (the GSM EDGE Radio Access Network of 2G, strengthen the global system for mobile communications Radio Access Network of data rate) and the UTRAN (UniversalTerrestrial Radio Access Network, universal land radio access web) of 3G; Core net comprises circuit domain network element MSC (Mobile Switch Center, mobile switching centre) and grouping domain network element Serving GPRS Support Node (Serving GPRS Support Node is called for short SGSN).Wherein, MSC provides circuit voice business, circuit data service and short message service, and SGSN links to each other with SAE GW among the LTE/SAE, and packet switch domain service is provided.
Home subscriber server (Home Subscriber Server is called for short HSS), the data that are used to manage CS territory, PS territory and IMS network.
Among Fig. 2, the IMS network comprises: CSCF (Call Session Control Function, be called for short CSCF), MGCF (Media Gateway Control Function is called for short MGCF) waits core network element, and the SCC AS of realization VCC function.
Based on framework shown in Figure 2, UE can insert the IMS network by LTE/SAE, also can insert the IMS network by the PS territory (being GERAN/UTRAN and SGSN among Fig. 2) of 2G and 3G, enjoys the business of IMS network, can also insert simultaneously the CS territory of 2G and 3G, use CS business such as speech business.
More than the network for existing in the prior art in order to realize the single wireless channel voice business continuity, strengthens existing MSC, is provided with enhanced MSC.Enhanced MSC all links to each other with the MSC of CS domain core net unit of 2G/3G, the core network element in PS territory and the MME of LTE/SAE network, is used to control the switching of LTE/SAE network and 2G/3G network.Enhanced MSC also links to each other with SCC AS by the MGCF of IMS network, and all-calls can both be anchored among the SCC AS of IMS network, has guaranteed the realization of VCC basic function.
Interface adopts E interface between enhanced MSC and the MSC.E interface adopts MAP (MobileApplication Part is called for short MAP) signaling, switches the inter-office switchover mode that adopts the CS territory between enhanced MSC and the MSC.Be provided with if MSC that strengthens and MSC merge, the interacting message between them is then realized by inner Signalling exchange.
Under the SRVCC framework, the session to SCC AS that UE sets up by LTE/SAE network and IMS network can be called source session Leg (promptly being based upon the sessions carry resource between UE and the SCC AS) equally; The enhanced MSC that UE is set up by the CS territory is called CS session Leg (promptly being based upon the sessions carry resource between enhanced MSC and the SCC AS) to the session between the SCC AS; SCC AS is called far-end session Leg (promptly being based upon the sessions carry resource between SCC AS and the far-end UE) to the session of far-end UE.
Fig. 2 A is under SRVCC framework shown in Figure 2, and session is switched to CS network insertion (promptly inserting from GERAN/UTRAN), the flow chart during handoff failure from LTE/SAE network insertion (promptly inserting from E-UTRAN).In this flow process, UE has set up a session by LTE/SAE access network and UE-B at the IMS network, and this Session Anchor has arrived among the SCC AS; At this moment, there is the source session Leg that is based upon the LTE/SAE access network between UE and the SCC AS, and the far-end session Leg between SCC AS and the UE-B.Switching flow shown in Fig. 2 A may further comprise the steps:
A201, UE send measurement report to E-UTRAN after receiving the measurement request that LTE/SAE wireless net member E-UTRAN sends, comprise adjacent district information in the described measurement report;
A202, E-UTRAN are according to the adjacent district information in the measurement report, and decision is initiated to switch, and therefore sends RELOCATION REQUEST message to MME;
A203, after MME receives RELOCATION REQUEST message, according to the information that wherein comprises, send RELOCATION REQUEST message forward to enhanced MSC, sign STN and user's integrated services digital network (Integrated Service Digital Network is called for short ISDN) number is switched in the territory of carrying the user in this message;
Above-mentioned STN and ISDN number are information and the configuration of MME according to the user, acquire from the HSS of correspondence.
A204, enhanced MSC sends MAP to MSC and prepares handoff request message;
A205, MSC send to switch to GERAN/UTRAN and require request message, and GERAN/UTRAN returns to switch to MSC and requires acknowledgement message;
A206, MSC returns MAP to enhanced MSC and prepares handover request ack message, carries Handover Number in this message, and this Handover Number is distributed by MSC;
A207, enhanced MSC sends the integrated digital service-user part signaling initial address message of (ISDN User Part is called for short ISUP) according to Handover Number to MSC, and MSC returns the Address Complete Message of ISUP to enhanced MSC;
It should be noted that if enhanced MSC and MSC merge to be provided with then above-mentioned steps A204, A206 and A207 merge inner realization of network element device of setting at this.
A208, enhanced MSC by the IMS network MGCF and CSCF to the initial address message that SCC AS sends ISUP, carry STN and ISDN number in this message; ISDN number and STN are used to indicate SCC AS that the session of correspondence is switched to the CS territory at operation layer from the IMS network; SCC AS sends response message to enhanced MSC;
This step also can be that enhanced MSC directly sends SIP (Session InitialProtocol to SCC AS, initial session protocol) conversation request message, the telecommunications universal resource identifier (tel URI) of carrying STN in this message or being converted to by user's ISDN number; SCC AS returns SIP success message (200OK message) to enhanced MSC;
Enhanced MSC also can send to SCC AS with STN by trigger intelligent business, obtains routing number from SCC AS, uses routing number that message is directly sent to SCC AS then.
Enhanced MSC is by ISUP initial address message or SIP conversation request message in this step, and notice SCC AS need carry out voice business continuity and switch, and request SCC AS switches to CS territory at operation layer from the IMS network with respective session.
Set up the CS session Leg between enhanced MSC and the SCC AS this moment.
A209, SCC AS upgrade far-end session Leg, it is linked to each other with CS session Leg, and timer T is set, and are used for source of release session Leg when timer expiry;
Timer T is set guarantees after whole switching is finished, source of release session Leg.
A210, enhanced MSC is returned relocation response message forward to MME;
A211, MME returns relocation response message to E-UTRAN;
A212, E-UTRAN returns the reorientation command messages to UE;
A213, it is unavailable that UE detects the Radio Resource of finding Target cell (being GERAN/UTRAN), and former access channel (promptly still keeping inserting from E-UTRAN) is returned in decision, therefore notifies the E-UTRAN cancellation to switch; After E-UTRAN receives the notification message of UE transmission, carry the handover cancelling message of returning former access channel sign, carry out follow-up cancellation hand-off process to the enhanced MSC transmission;
A214, UE initiates SIP session invitation message (being INVITE) by CSCF to SCC AS, carries STI in this message, and indication SCC AS switches back IMS network at operation layer from the CS territory with the session of correspondence, also identifies UE simultaneously and prepares to return former access channel;
Between UE and SCC AS, set up a new session Leg this moment.
A215, SCC AS be according to STI, and source of release session Leg and CS session Leg, and the far-end sessions carry resource between renewal and the UE-B make far-end session Leg link to each other with new session Leg.
Arrive this, corresponding IMS session is failed switching to from the LTE/SAE network insertion when inserting from the CS territory, and UE need turn back to former LTE/SAE access network and proceed session.
But, there is following problem when in the prior art above-mentioned handoff failure being handled:
When UE need turn back to former LTE/SAE access network and proceeds session, need be at a newly-built session Leg (for example steps A 214), source of release session Leg and the CS session Leg that sets up in steps A 208 again after new session Leg sets up successfully, this has caused the waste of resource.In addition, it is mutual to keep two sessions may need UE and call hold service server to take place simultaneously, and this also can consume certain communication resource, and makes terminal complicated more, and cost is higher.
Summary of the invention
Technical problem to be solved by this invention is, overcome the deficiencies in the prior art, providing a kind of switches at the voice business continuity that carries out session, session when the LTE/SAE network insertion switches to CS territory access failure, be need not to set up new session Leg (being new sessions carry resource) and can realize that subscriber equipment returns the method for former access channel between subscriber equipment and SCC AS.
In order to address the above problem, the processing method when the invention provides a kind of voice business continuity handoff failure, this method comprises:
Subscriber equipment is carrying out the voice business continuity switching, after session switched to circuit domain CS territory access failure from Long Term Evolution/System Architecture Evolution LTE/SAE network insertion, subscriber equipment or strengthen moving exchanging center MSC and send to centralized control business and session service application server for continuity SCC AS and return former access channel notification message;
SCC AS receive above-mentioned return former access channel notification message after, with between subscriber equipment and the SCC AS carry out described voice business continuity switch before foundation described session bearing resource, link to each other with the far-end sessions carry resource of described session, make subscriber equipment return former access channel and carry out described session.
In addition, whether enhanced MSC is judged to carry in this message and is returned former access channel sign after the handover cancelling message that the universal land radio access web E-UTRAN that receives evolution sends, if carry, then send the described former access channel notification message that returns.
In addition, describedly return former access channel notification message and be: initial session protocol SIP updating message, SIP be a kind of in invitation message, SIP informational message, the SIP byebye message again, and use the session identification of described session.
In addition, if describedly return former access channel notification message and be: SIP updating message or SIP be invitation message or SIP informational message again, then receive described return former access channel notification message after, SCC AS discharges the bearing resource of the described session between enhanced MSC and the SCC AS.
In addition, described to return former access channel notification message be destructuring supplementary service data USSD message, carries the calling number that is associated with described session in the described USSD message.
In addition, if in carrying out described voice business continuity handoff procedure, enhanced MSC is set up the bearing resource of the described session between enhanced MSC and the SCC AS by trigger intelligent business, the then described IN service reporting events message that to return former access channel notification message be described IN service.
It is in addition, described that to return former access channel notification message be integrated digital service-user part signaling release message.
In addition, subscriber equipment if it is unavailable to detect CS territory access device Radio Resource, then sends the described former access channel notification message that returns after receiving the reorientation order that the universal land radio access web E-UTRAN of evolution sends.
In addition, describedly return the sip message that former access channel notification message is to use the session identification of described session.
In addition, receive described return former access channel notification message after, SCC AS discharges the bearing resource of the described session between enhanced MSC and the SCC AS.
In sum, processing method when adopting voice business continuity handoff failure of the present invention, solved when can't successfully session being switched to the CS territory from the LTE/SAE network insertion and inserted, in the time of need returning former access channel, need subscriber equipment to rebulid the problem of a session Leg, save the communication resource, reduced the complexity of subscriber equipment.
Description of drawings
Fig. 1 is the VCC solution schematic diagram under the existing IMS;
Fig. 2 is the configuration diagram of the scheme of existing realization SRVCC;
Fig. 2 A is under SRVCC framework shown in Figure 2, session is switched to the CS network insertion from the LTE/SAE network insertion, the flow chart during handoff failure;
Fig. 3 carries out voice business continuity switching (switching to from the access of CS territory from the LTE/SAE network insertion) process flow figure when failing for first embodiment of the invention under based on SRVCC framework shown in Figure 2;
Fig. 4 carries out voice business continuity switching (switching to from the access of CS territory from the LTE/SAE network insertion) process flow figure when failing for second embodiment of the invention under based on SRVCC framework shown in Figure 2.
Embodiment
Basic thought of the present invention is, when UE switches to from CS territory access failure from the LTE/SAE network insertion, UE or enhanced MSC send to SCC AS and return former access channel notification message, and SCC AS reconnects source session Leg and far-end session Leg after receiving this notification message.
Describe the present invention below in conjunction with drawings and Examples.
First embodiment:
Fig. 3 carries out voice business continuity switching (switching to from the access of CS territory from the LTE/SAE network insertion) process flow figure when failing for first embodiment of the invention under based on SRVCC framework shown in Figure 2.
The core concept of present embodiment is: after enhanced MSC is received handover cancelling message, find to carry in the handover cancelling message and return former access channel sign, then send to SCC AS and return former access channel notification message; SCC AS after receiving this notification message reconnects source session Leg and far-end session Leg, makes UE return former access channel and continues conversation.As shown in Figure 3, this method may further comprise the steps:
301, UE sends measurement report to E-UTRAN after receiving the measurement request that LTE/SAE wireless net member E-UTRAN sends, comprise adjacent district information in the described measurement report;
302, E-UTRAN is according to the adjacent district information in the measurement report, and decision is initiated to switch, and therefore sends RELOCATION REQUEST message to MME;
303, after MME receives RELOCATION REQUEST message,, send RELOCATION REQUEST message forward to enhanced MSC according to the information that wherein comprises, carry STN and ISDN number in this message;
304, enhanced MSC sends MAP to MSC and prepares handoff request message;
305, MSC sends to switch to GERAN/UTRAN and requires request message, and GERAN/UTRAN returns to switch to MSC and requires acknowledgement message;
306, MSC returns MAP to enhanced MSC and prepares handover request ack message, carries Handover Number in this message, and this Handover Number is distributed by MSC;
307, enhanced MSC is according to the initial address message of Handover Number to MSC transmission ISUP, and MSC returns the Address Complete Message of ISUP to enhanced MSC;
It should be noted that if enhanced MSC and MSC merge to be provided with then above-mentioned steps 304,306 and 307 merges inner realization of network element device of setting at this.
308, enhanced MSC by the IMS network MGCF and CSCF to the initial address message that SCC AS sends ISUP, carry STN and ISDN number in this message; ISDN number and STN are used to indicate SCC AS that the session of correspondence is switched to the CS territory at operation layer from the IMS network; SCC AS sends response message to enhanced MSC;
This step also can be that enhanced MSC directly sends the SIP conversation request message to SCC AS, carries STN or telecommunications universal resource identifier (tel URI) in this message; SCC AS returns SIP success message (200OK message) to enhanced MSC;
Enhanced MSC also can send to SCC AS with STN by trigger intelligent business, obtains routing number from SCC AS, uses routing number to send message to SCC AS then and to indicate SCC AS the session of correspondence is switched to the CS territory at operation layer from the IMS network.
Initial address message, SIP conversation request message and the IN service reporting events message of the above-mentioned ISUP that enhanced MSC sends all is used to notify SCC AS need carry out the voice business continuity switching, request SCC AS switches to CS territory at operation layer from the IMS network with respective session, set up the CS session Leg between enhanced MSC and the SCC AS simultaneously, can be referred to as CS session Leg and set up message.
Set up the CS session Leg between enhanced MSC and the SCC AS this moment.
309, SCC AS upgrades far-end session Leg, it is linked to each other with CS session Leg, and timer T is set, and is used for source of release session Leg when timer expiry;
Timer T is set guarantees after whole switching is finished, source of release session Leg.
310, enhanced MSC is returned relocation response message forward to MME;
311, MME returns relocation response message to E-UTRAN;
312, E-UTRAN returns the reorientation command messages to UE;
313, it is unavailable that UE detects the Radio Resource of finding Target cell (being GERAN/UTRAN), and former access channel (promptly still keeping inserting from E-UTRAN) is returned in decision, therefore notifies the E-UTRAN cancellation to switch; After E-UTRAN receives the notification message of UE transmission, send and carry the handover cancelling message of returning former access channel sign;
If owing to reasons such as finding the UE out of reach sends handover cancelling message, then not carrying in this message, E-UTRAN do not return former access channel sign.
314, the above-mentioned handover cancelling message that E-UTRAN sends arrives enhanced MSC through MME;
315, enhanced MSC notification target MSC (being MSC shown in Figure 2) discharges the resource of having set up (being the resource that MSC sets up in step 305 and 307);
Be provided with if enhanced MSC and MSC merge, then enhanced MSC discharges the Radio Resource of having set up (being the resource that enhanced MSC is set up in the step 307) voluntarily.
316, whether carry in the above-mentioned handover cancelling message that the enhanced MSC judgement receives and return former access channel sign, if carry, then send and return former access channel notification message to SCC AS; Otherwise send the notification message that discharges CS session Leg to SCC AS;
Above-mentionedly return former access channel notification message and can be:
SIP upgrades (Update) message or SIP invites (Re-invite) message or SIP goodbye (Bye) message or SIP information (Information) message again; Above-mentioned sip message uses the session identification of the session that need return former access channel, and can carry the former session identification of activation that is used to represent activation of source session Leg; Or
Unstructured supplementary service data (Unstructured Supplementary Service Data is called for short USSD) message is carried the calling number that is associated with respective session, and can be carried and activate former session identification in this message; Or
The ISUP release message carries the STN and the ISDN number of above-mentioned session in this message.
In addition, if in the step 308, enhanced MSC is set up CS session Leg between enhanced MSC and the SCC AS by trigger intelligent business, return the IN service reporting events message that former access channel notification message also can be based on identical IN service in this step, carry in this message and activate former session identification.
317, after SCC AS receives and returns former access channel notification message, the source session Leg and the far-end session Leg of respective session reconnected, make UE turn back to former access channel and proceed this session.
In this step, can carry the message that activates former session identification if receive sip message, USSD message etc., SCC AS can judge that whether this message is for returning former access channel notification message according to whether carrying the former session identification of activation in the message; Can't carry the ISUP release message that activates former session identification if receive, SCC AS can judge after receiving this message whether corresponding source session Leg (for example is released, can carry out this judgement by checking that timer T that step 309 is provided with is whether overtime), if corresponding source session Leg is not released, then source session Leg and the far-end session Leg with this session reconnects.
In addition, if above-mentioned to return former access channel notification message be SIP byebye message or ISUP release message, enhanced MSC discharges corresponding CS session Leg when sending this message; If above-mentioned to return former access channel notification message be SIP updating message or SIP invitation message or SIP informational message or USSD message or IN service reporting events message again, receive return the access channel notification message after, can discharge corresponding CS session Leg simultaneously by SCC AS.
Second embodiment:
Fig. 4 carries out voice business continuity switching (switching to from the access of CS territory from the LTE/SAE network insertion) process flow figure when failing for second embodiment of the invention under based on SRVCC framework shown in Figure 2.
The core concept of present embodiment is: receive the switching command (being the reorientation order) of E-UTRAN transmission as UE after, the Radio Resource that detects Target cell (being GERAN/UTRAN) is unavailable, can't arrive by successful switch, when former access channel is returned in decision, when sending handover cancelling message, E-UTRAN returning former access channel notification message to SCC AS transmission, after SCC AS receives this notification message, the source session Leg and the far-end session Leg of correspondence are reconnected, and UE returns former channel and continues conversation.As shown in Figure 4, this method may further comprise the steps:
401～413, identical with step 301～313;
414, UE sends to SCC AS by CSCF and returns former access channel notification message;
Above-mentionedly return former access channel notification message and can be: SIP upgrades (Update) message or SIP invites (Re-invite) message or SIP information (Information) message again; It is in addition, above-mentioned that to return former access channel notification message also can be other sip message that the session of returning former access channel with needs has the same session sign.
415, SCC AS receive above-mentioned return former access channel notification message after, know that according to fields such as Contact this message is sent by UE, therefore reconnect according to the source session Leg and the far-end session Leg of the session identification that uses in this message, make UE turn back to former access channel and proceed described session respective session;
In addition, if the CS session Leg of this session this moment does not also discharge, then SCC AS discharges corresponding CS session Leg.
Claims (10)
1, the processing method during a kind of voice business continuity handoff failure is characterized in that this method comprises:
Subscriber equipment is carrying out the voice business continuity switching, after session switched to circuit domain CS territory access failure from Long Term Evolution/System Architecture Evolution LTE/SAE network insertion, subscriber equipment or strengthen moving exchanging center MSC and send to centralized control business and session service application server for continuity SCC AS and return former access channel notification message;
SCC AS receive above-mentioned return former access channel notification message after, with between subscriber equipment and the SCC AS carry out described voice business continuity switch before foundation described session bearing resource, link to each other with the far-end sessions carry resource of described session, make subscriber equipment return former access channel and carry out described session.
2, the method for claim 1 is characterized in that,
Whether enhanced MSC is judged to carry in this message and is returned former access channel sign after the handover cancelling message that the universal land radio access web E-UTRAN that receives evolution sends, if carry, then send the described former access channel notification message that returns.
3, method as claimed in claim 2 is characterized in that,
Describedly return former access channel notification message and be: initial session protocol SIP updating message, SIP be a kind of in invitation message, SIP informational message, the SIP byebye message again, and use the session identification of described session.
4, method as claimed in claim 3 is characterized in that,
If describedly return former access channel notification message and be: SIP updating message or SIP be invitation message or SIP informational message again, then receive described return former access channel notification message after, SCC AS discharges the bearing resource of the described session between enhanced MSC and the SCC AS.
5, method as claimed in claim 2 is characterized in that,
Described to return former access channel notification message be destructuring supplementary service data USSD message, carries the calling number that is associated with described session in the described USSD message.
6, method as claimed in claim 2 is characterized in that,
If in carrying out described voice business continuity handoff procedure, enhanced MSC is set up the bearing resource of the described session between enhanced MSC and the SCC AS by trigger intelligent business, the then described IN service reporting events message that to return former access channel notification message be described IN service.
7, method as claimed in claim 2 is characterized in that,
It is described that to return former access channel notification message be integrated digital service-user part signaling release message.
8, the method for claim 1 is characterized in that,
Subscriber equipment if it is unavailable to detect CS territory access device Radio Resource, then sends the described former access channel notification message that returns after receiving the reorientation order that the universal land radio access web E-UTRAN of evolution sends.
9, method as claimed in claim 8 is characterized in that,
Describedly return the sip message that former access channel notification message is to use the session identification of described session.
10, as claim 5 or 9 described methods, it is characterized in that,
Receive described return former access channel notification message after, SCC AS discharges the bearing resource of the described session between enhanced MSC and the SCCAS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101736676A CN101577878B (en) | 2008-11-05 | 2008-11-05 | Method for processing voice service continuity switching failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101736676A CN101577878B (en) | 2008-11-05 | 2008-11-05 | Method for processing voice service continuity switching failure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101577878A true CN101577878A (en) | 2009-11-11 |
| CN101577878B CN101577878B (en) | 2012-06-06 |
Family
ID=41272626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101736676A Active CN101577878B (en) | 2008-11-05 | 2008-11-05 | Method for processing voice service continuity switching failure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101577878B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796265A (en) * | 2014-02-10 | 2014-05-14 | 中国联合网络通信集团有限公司 | SRVCC switchover processing method and device based on video colloquy |
| CN105119904A (en) * | 2010-03-04 | 2015-12-02 | 交互数字专利控股公司 | Method for identification and transfer in internet protocol multimedia subsystem collaborative sessions |
| CN106658631A (en) * | 2015-11-04 | 2017-05-10 | 北京信威通信技术股份有限公司 | Voice switching method and device |
| CN106792941A (en) * | 2016-12-20 | 2017-05-31 | 北京小米移动软件有限公司 | The processing method and processing device of injection frequency continuous voice call switching |
| CN108616940A (en) * | 2016-12-31 | 2018-10-02 | ***通信集团北京有限公司 | A kind of 2G/3G Internet resources method for releasing and mobile communications network |
| CN110072260A (en) * | 2018-01-22 | 2019-07-30 | 大唐移动通信设备有限公司 | Method, apparatus, electronic equipment and the storage medium of hand-off process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262414B (en) * | 2007-03-07 | 2010-12-29 | 中兴通讯股份有限公司 | Domain switch method in continuous voice call service |
| CN101227733B (en) * | 2008-02-05 | 2012-09-26 | 中兴通讯股份有限公司 | Single wireless channel voice business continuity field switching method |
| CN101227677B (en) * | 2008-02-05 | 2011-06-22 | 中兴通讯股份有限公司 | Single wireless channel voice business continuity field switching method |
-
2008
- 2008-11-05 CN CN2008101736676A patent/CN101577878B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119904A (en) * | 2010-03-04 | 2015-12-02 | 交互数字专利控股公司 | Method for identification and transfer in internet protocol multimedia subsystem collaborative sessions |
| CN105119904B (en) * | 2010-03-04 | 2018-10-26 | 交互数字专利控股公司 | The method of identification and transmission in internet protocol multimedia subsystem coordinated conversational |
| CN103796265A (en) * | 2014-02-10 | 2014-05-14 | 中国联合网络通信集团有限公司 | SRVCC switchover processing method and device based on video colloquy |
| CN103796265B (en) * | 2014-02-10 | 2017-07-21 | 中国联合网络通信集团有限公司 | A kind of SRVCC switching handling methods and device based on video session |
| CN106658631A (en) * | 2015-11-04 | 2017-05-10 | 北京信威通信技术股份有限公司 | Voice switching method and device |
| CN106792941A (en) * | 2016-12-20 | 2017-05-31 | 北京小米移动软件有限公司 | The processing method and processing device of injection frequency continuous voice call switching |
| CN106792941B (en) * | 2016-12-20 | 2019-12-13 | 北京小米移动软件有限公司 | Method and device for processing single radio frequency voice call continuity switching |
| CN108616940A (en) * | 2016-12-31 | 2018-10-02 | ***通信集团北京有限公司 | A kind of 2G/3G Internet resources method for releasing and mobile communications network |
| CN110072260A (en) * | 2018-01-22 | 2019-07-30 | 大唐移动通信设备有限公司 | Method, apparatus, electronic equipment and the storage medium of hand-off process |
| CN110072260B (en) * | 2018-01-22 | 2020-04-21 | 大唐移动通信设备有限公司 | Switching processing method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101577878B (en) | 2012-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101668273B (en) | Emergency service switching method | |
| US8180347B2 (en) | Domain transferring method for single radio voice call continuity | |
| CN101835223B (en) | Voice business continuity switching method | |
| CN101227733B (en) | Single wireless channel voice business continuity field switching method | |
| CN101577878B (en) | Method for processing voice service continuity switching failure | |
| CN101227647A (en) | Switching method of keeping multimedia conversation continuity business | |
| CN102378297B (en) | Terminal capacity report method and system | |
| CN101577951B (en) | Method for processing voice service continuity switching failure | |
| JP5645329B2 (en) | Method and system for handing over circuit switched domain service to packet switched domain | |
| CN101577890B (en) | Method for transferring emergency service sessions, and emergency service system | |
| CN101459940B (en) | Domain switching method for continuity of single wireless channel voice service | |
| CN101800960A (en) | Method for transferring emergent service session and emergent service system | |
| US8412283B2 (en) | System and method for switching ringing state session with customized alerting tone | |
| CN101459891B (en) | Switching method for single wireless channel voice service continuity | |
| CN102238672B (en) | Method and system for realizing rSRVCC (reverse signal radio voice call continuity) | |
| CN102387117B (en) | Switch the method and apparatus of ringing-state session | |
| CN102056255A (en) | Session switching implementation method and system | |
| CN101242665A (en) | A switching method for multimedia session continuity | |
| CN102238673A (en) | Reverse single-standby service continuity realization method and system | |
| CN102006269B (en) | Synchronization method and system for multi-session capability of IP multimedia subsystem | |
| CN101472302B (en) | Method and device for switching business | |
| CN103096392A (en) | Reverse single radio voice call continuity bearer switching method and device | |
| CN103118407B (en) | A kind of method and system for realizing reverse single-standby service continuity | |
| CN103200626A (en) | Modified reverse-direction one-standby service continuity implementation method and device | |
| CN101325792B (en) | Method for switching control route of IP multimedia subsystem centralized business conversation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |