Embodiment
Embodiment of the present invention subscriber equipment, after determining the IMS call blocking of initiating, is initiated CS calling by CS territory or initiates the calling of non-3 GPP access technology.Because the embodiment of the present invention is after IMS call blocking, can CS calling be initiated by CS territory or initiate the calling of non-3 GPP access technology, thus when solving for IMS call blocking, subscriber equipment cannot initiate the problem of audio call at session management back off timer run duration.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As shown in Figure 1, the method that the embodiment of the present invention carries out calling out comprises the following steps:
The IMS call blocking of initiating determined by step 101, subscriber equipment;
Step 102, subscriber equipment are initiated CS calling by CS territory or are initiated the calling of non-3 GPP access technology.
Wherein, the calling of the non-3 GPP access technology of the embodiment of the present invention includes but are not limited to the one in following technology:
WLAN (Wireless Local Area Network, WLAN (wireless local area network)), WiMAX (WorldwideInteroperability for Microwave Access, micro-wave access global inter communication), CDMA (CodeDivision Multiple Access, code division multiple access) 2000.
If subscriber equipment initiates CS calling by CS territory, preferably, in step 102, subscriber equipment performs associating TAU (Tracking Area Update, tracing section updating) process carries out IMSI attachment, and CS calling is initiated by circuit domain dropping CSFB (circuit switch fallback, circuit domain dropping) after carrying out IMSI attachment; Or
Subscriber equipment gravity treatment is to GERAN (GSM EDGE Radio Access Network; GSM EDGE Radio Access Network; GSM, Global System for Mobile Communications, global system for mobile communications; EDGE, Enhanced Data rates for GSM Evolution, the enhancing data transfer rate of GSM evolution) or UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial radio access network; UMTS, Universal Mobile Telecommunications System, universal mobile telecommunications system) after carry out IMSI attachment, and initiate CS calling after carrying out IMSI attachment.
In force, if carry out IMSI attachment after subscriber equipment gravity treatment to GERAN or UTRAN, then first subscriber equipment judges whether the mobile management back off timer in CS territory runs, and if so, then refuses the IMS initiated; Otherwise carry out IMSI attachment after gravity treatment to GERAN or UTRAN.
In force, if subscriber equipment performs associating TAU process and carries out IMSI attachment, then first subscriber equipment judges whether self supports CSFB, if support, then performs associating TAU process and carries out IMSI attachment; Otherwise gravity treatment carries out IMSI attachment to GERAN or UTRAN, and initiate CS calling after carrying out IMSI attachment.
Preferably, do not support CSFB at subscriber equipment, and before gravity treatment carries out IMSI attachment to GERAN or UTRAN, subscriber equipment can also judge whether the mobile management back off timer in CS territory runs, and if so, then refuses the IMS initiated; Otherwise carry out IMSI attachment after gravity treatment to GERAN or UTRAN.
Preferably, in step 102, before subscriber equipment is initiated CS calling by CS territory or is initiated the calling of non-3 GPP access technology, first can also judge user preference, if determine, user preference carries out voice service, then initiate CS calling by CS territory or initiate the calling of non-3 GPP access technology, otherwise the IMS that refusal is initiated.
Concrete, subscriber equipment by checking usage setting (use and arrange), if usage setting is voice centric (speech centre), then can determine that user preference carries out voice service.
In force, it is " CS voice only (only having CS voice) " or " CSvoice preferred; IMS PS Voice as secondary (secondly first-selected CS voice are IMS PS (packet switching) Voice) that CS voice capable (having CS speech capability) UE may change its voicedomain preference (preference of speech range).
Preferably, in step 102, before subscriber equipment is initiated CS calling by CS territory or is initiated the calling of non-3 GPP access technology, can also first point out access network to change to user, determine call out by CS territory initiation CS or initiate the calling of non-3 GPP access technology after user agrees to change access network.
Preferably, in step 102, subscriber equipment first can also show CS territory and non-3 GPP access technology to user before initiating CS calling by CS territory or initiating the calling of non-3 GPP access technology, selects to adopt CS territory to initiate CS call out or the calling of initiation non-3 GPP access technology by user.
In force, above-mentioned judgement user preference, point out access network to show CS territory and non-3 GPP access technology three kinds of modes by change with to user to user, can adopt simultaneously, also can adopt part way.When adopting at least two kinds of modes, demand fulfillment all mode just initiates the calling of CS calling or initiation non-3 GPP access technology by CS territory.
Preferably, in step 101, subscriber equipment determines that the situation of the IMS call blocking of initiating has a variety of, enumerates several below.
Wherein, after having a kind of generation below in situation about enumerating, the IMS call blocking of initiating can just be determined:
Needing the PDN set up to connect corresponding APN occurs congested;
The session management back off timer needing the PDN set up to connect corresponding APN runs;
The access network of subscriber equipment changes and network after changing does not support that IMS calls out.
Preferably, if desired the session management back off timer that the PDN set up connects corresponding APN runs, in step 102, before subscriber equipment is initiated CS calling by CS territory or is initiated the calling of non-3 GPP access technology, first can also judge whether the remaining duration of user conversation management back off timer is greater than the threshold value of setting, if so, then initiate CS calling by CS territory or initiate the calling of non-3 GPP access technology; Otherwise after the back off timer of user conversation management by the time time-out, initiate IMS calling.
Wherein, judge that the mode whether user conversation management back off timer remaining duration is greater than the threshold value of setting can use with the part or all of mode in above-mentioned three kinds of modes equally simultaneously.
As shown in Figure 2 A, the first method of carrying out IMSI attachment of the embodiment of the present invention comprises the following steps:
Step 201, subscriber equipment send release EPS bearer context request (DEACTIVATE EPS BEARER CONTEXTREQUEST to MME (Mobility Management Entity, Mobility Management Entity); EPS, Evolved Packet System, evolved packet system), and there is PDN connection refusal (PDN connectivity reject), thus start session management back off timer;
The IMS application (application program) of step 202, subscriber equipment needs to set up PDN and connects, but the APN that SM layer detects (session management layer detection) uses exists the SMback-off timer run;
Step 203, subscriber equipment carry out IMSI attachment after performing associating TAU process or gravity treatment to GERAN or UTRAN;
Step 204, subscriber equipment carry out IMSI attachment.
As shown in Figure 2 B, the method that embodiment of the present invention the second carries out IMSI attachment comprises the following steps:
The IMS application of step 211, subscriber equipment needs to set up PDN and connects;
The PDN of step 212, subscriber equipment connects refusal, thus starts session management back off timer;
Step 213, subscriber equipment carry out IMSI attachment after performing associating TAU process or gravity treatment to GERAN or UTRAN;
Step 214, subscriber equipment carry out IMSI attachment.
Based on same inventive concept, a kind of subscriber equipment is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to this subscriber equipment is similar to the method that the embodiment of the present invention carries out calling out, and therefore the enforcement of this subscriber equipment see the enforcement of method, can repeat part and repeat no more.
As shown in Figure 3, the subscriber equipment of the embodiment of the present invention comprises: determination module 30 and calling module 31.
Determination module 30, for determining the IP Multimedia System IMS call blocking of initiating;
Calling module 31, for initiating the calling of CS calling or initiation non-3 GPP access technology by circuit commutative field CS territory.
Preferably, if initiate CS calling by CS territory, calling module 31 performs associating TAU process and carries out IMSI attachment, and CS calling is initiated by circuit domain dropping CSFB after carrying out IMSI attachment, or carry out IMSI attachment after gravity treatment to GERAN or UTRAN, and initiate CS calling after carrying out IMSI attachment.
Preferably, calling module 31, after determining to support CSFB, performs associating TAU process and carries out IMSI attachment.
Preferably, calling module 31 is after determining not support CSFB, and gravity treatment carries out IMSI attachment to GERAN or UTRAN, and initiates CS calling after carrying out IMSI attachment.
Preferably, calling module 31 is after determining the mobile management back off timer off-duty in CS territory, and gravity treatment is to GERAN or UTRAN.
Preferably, calling module 31, after determining that user preference carries out voice service, is initiated CS calling by CS territory or initiates the calling of non-3 GPP access technology.
Preferably, calling module 31 points out access network to change to user, and after confirming that user agrees to change access network, initiates CS calling or initiate the calling of non-3 GPP access technology by CS territory.
Preferably, determination module 30 determines the IMS call blocking of initiation according to following manner:
Needing the PDN set up to connect corresponding APN occurs congested; Or
The session management back off timer needing the PDN set up to connect corresponding APN runs; Or
The access network of subscriber equipment changes and network after changing does not support that IMS calls out.
Preferably, if session management back off timer runs, calling module 31, after determining that the remaining duration of session management back off timer is greater than the threshold value of setting, is initiated CS calling by CS territory or initiates the calling of non-3 GPP access technology.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.