CN100488313C - SIP terminal of IMS network interworking system and method thereof - Google Patents
SIP terminal of IMS network interworking system and method thereof Download PDFInfo
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- CN100488313C CN100488313C CNB200710080326XA CN200710080326A CN100488313C CN 100488313 C CN100488313 C CN 100488313C CN B200710080326X A CNB200710080326X A CN B200710080326XA CN 200710080326 A CN200710080326 A CN 200710080326A CN 100488313 C CN100488313 C CN 100488313C
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Abstract
The invention relates to one IMS network SIP terminal connection system and its method, wherein, the system comprises agent dialogue control part, service dialogue control part and connection servo; the method comprises the following steps: materials containing SIP terminal by use of flow process to start calls or to receive flow call; not supporting materials pertained SIP terminal to receive non-premier flow process to start calls; connection servo separately using premier and non-premier connection terminal to exchange control information.
Description
Technical field
The present invention relates to mobile communication and IP Multimedia System, be specifically related to a kind of IMS network sip terminal intercommunicating system and method thereof.
Background technology
IP Multimedia System IP Multimedia Subsystem, be called for short IMS, it provides the common architecture of real-time and non real-time IP multimedia service, is that realization fixed network, mobile network are merged Fix Mobile Congestion, be called for short FMC, important solutions.
Characteristics of IMS architectural framework are not limit bottom to insert.In the networking of IMS, allow GPRS, WLAN, plurality of access modes such as xDSL, different access waies are for the instructions for use difference of resource, in actual operation process, because the limited bandwidth of wireless network such as GPRS, resource time is long, if after the signaling connection, carrying out medium again prepares, signaling just may occur and connect, and the situation that medium still are not ready for forms " ghost Ringing " phenomenon, therefore, the portable terminal that requires GPRS to insert must carry out resource reservation.
For coordination resource is reserved, IMS has adopted the media negotiation that defines among the RFC3312 and the mechanism of prerequisite Precondition, this mechanism has been introduced one group of restriction constraints in the conversation initial process, after the session recipient must satisfy this group restriction, could notify the user, and continue follow-up session.If the resource that requires does not satisfy, session can not be finished, and this just makes session initiation protocol SIP flow process and resource reservation combine.In the present invention, support resource reservation terminal means the necessary prerequisite precondition mechanism of supporting.
On the other hand, relatively large for bandwidth, resource short access way of time, for example, LAN etc., resource reservation are not necessarily, this also make present many fixed terminals not support resource reserve, just do not support the prerequisite Precondition mechanism among the RFC 3312 yet.So, in the IMS network, existing both call sides, a side requires resource reservation, and the opposing party is the situation of support resource reservation not.
3GPP TS24.229 the 6th edition has proposed a kind of solution both call sides and has supported the asymmetric scheme of situation for resource reservation, the terminal that this scheme requires support resource to reserve, when support resource is reserved in the discovery opposite end, flow process is set up in the change session, the flow process that adopts non-resource to reserve realizes the foundation of session.
Adopt this scheme that terminal has been proposed to have higher requirement, require terminal not only will support to adopt resource reservation and not adopt two kinds of call flows of resource reservation, and to when finding the opposite end support resource is reserved, can automatically switch to the flow process that does not adopt resource reservation.In case terminal does not have automatic switching function, may cause session forever can't set up, further, this has greatly reduced the manageability of IMS network.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of IMS network sip terminal intercommunicating system and method thereof, can overcome when both call sides supports that to resource reservation situation is asymmetric among the standard 3GPP TS 24.229 the 6th edition, the session that may cause forever can't be set up problem, and effectively improved the compatibility of IMS network to early stage terminal, be seamlessly transitting of core network, and existing subscriber's original investment is given security.
Above-mentioned first technical problem of the present invention solves like this, a kind of IMS network sip terminal interoperability methods is provided, in the IMS network, intercommunication server is set, comprise the resource reservation sip terminal call out not support resource reserve sip terminal and not support resource reserve sip terminal call resources reservation sip terminal, this calling procedure is: call out side's resource reservation sip terminal and use the prerequisite flow process to make a call or receive the calling of initiating by the prerequisite flow process, call out the opposing party, support resource reservation sip terminal does not receive the calling of initiating by non-prerequisite flow process or uses non-prerequisite flow process to make a call, intercommunication server uses prerequisite and non-prerequisite flow process and intercommunication respectively, and described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and do not used prerequisite flow process exchange both sides session information whole; Described resource reservation sip terminal and support resource reserve successfully do not exchange described session information between the sip terminal after, determine whether to set up conversation according to described session information.
According to interoperability methods provided by the invention, comprise between the resource reservation sip terminal simultaneously or the not calling between the support resource reservation sip terminal, intercommunication server quit work or did not have an effect this moment.
According to interoperability methods provided by the invention, include, but are not limited to following two kinds of schemes:
Scheme one:
(1) described resource reservation sip terminal is called out not support resource reservation sip terminal, and this calling procedure specifically comprises:
2.1) calling party, the resource reservation sip terminal is reserved sip terminal to support resource not and is made a call, and corresponding signaling flow is through intercommunication server;
2.2) callee, support resource is not reserved sip terminal and is returned failure response and failure cause thereof;
2.3) the intercommunication server analysis and according to the failure cause of described failure response use non-prerequisite flow process again to this not support resource reserve sip terminal and initiate this calling;
2.4) intercommunication server uses prerequisite and non-prerequisite flow process and intercommunication respectively, exchange both sides session information;
2.5) both sides' exchange session information and set up or do not set up conversation according to described session information.
(2) described not support resource is reserved the sip terminal call resources and is reserved sip terminal, and this calling procedure specifically comprises:
3.1) calling party, support resource reservation sip terminal does not make a call to the resource reservation sip terminal, and corresponding signaling flow is through intercommunication server;
3.2) callee, support resource is reserved sip terminal and is returned failure response and failure cause thereof;
3.3) intercommunication server analysis and use the prerequisite flow process to initiate this calling to this resource reservation sip terminal again according to the failure cause of described failure response;
3.4) intercommunication server uses non-prerequisite and prerequisite flow process and intercommunication respectively, exchange both sides session information;
3.5) both sides' exchange session information and set up or do not set up conversation according to described session information.
According to interoperability methods provided by the invention, comprise also in this scheme that calling both sides all is that described resource reservation sip terminal is directly set up calling by the prerequisite flow process, judge that perhaps calling both sides all is that described not support resource is reserved sip terminal directly by non-prerequisite flow process foundation calling.
Scheme two:
(1) described not support resource is reserved the sip terminal call resources and is reserved sip terminal, and this calling procedure specifically comprises:
5.1) calling party not support resource reserve sip terminal and make a call to callee's resource reservation sip terminal, corresponding signaling flow is through intercommunication server;
5.2) be that support resource is not reserved sip terminal and described callee is the resource reservation sip terminal according to described calling party, described intercommunication server (105) uses the prerequisite flow process to initiate this calling to this resource reservation sip terminal again;
5.3) intercommunication server uses non-prerequisite and prerequisite flow process and intercommunication respectively, exchange both sides session information;
5.4) both sides' exchange session information and set up or do not set up conversation according to described session information.
(2) described resource reservation sip terminal is called out not support resource reservation sip terminal, and this calling procedure specifically comprises:.
6.1) calling party's resource reservation sip terminal to the callee not support resource reserve sip terminal and make a call, corresponding signaling flow is through intercommunication server;
6.2) the intercommunication server analysis and according to described calling party be resource reservation sip terminal and described callee be not support resource reserve sip terminal use non-prerequisite flow process again to this not support resource reserve sip terminal and initiate this calling;
6.3) intercommunication server uses non-prerequisite and prerequisite flow process and intercommunication respectively, described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and is not used prerequisite flow process exchange both sides session information whole;
6.4) described resource reservation sip terminal and not support resource reserve sip terminal both sides exchange session information, and set up or do not set up conversation according to described session information.
According to interoperability methods provided by the invention, comprise also in this scheme that described intercommunication server judgement calling both sides all is to set up by the prerequisite flow process behind the described resource reservation sip terminal to call out again, and judges that perhaps calling both sides all is to set up calling by non-prerequisite flow process again after described not support resource is reserved sip terminal.
Above-mentioned another technical problem of the present invention solves like this, and a kind of IMS network sip terminal intercommunicating system is provided, and is used to realize resource reservation and the not intercommunication between the support resource reservation sip terminal, comprising:
Act on behalf of conversation control entity, be used to insert the IMS network terminal and transmit the IMS network terminal and the serving session control entity between SIP request and response;
The serving session control entity is used for session control, selects suitable routing forwarding request and response, and call request triggers is arrived intercommunication server; Insert simultaneously or insert the external network sip terminal by the inquiry conversation control entity;
Intercommunication server, use respectively prerequisite and non-prerequisite flow process and resource reservation and not support resource reserve sip terminal and carry out communication, described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and is not used prerequisite flow process exchange both sides session information whole; Described resource reservation sip terminal and support resource reserve successfully do not exchange described session information between the sip terminal after, determine whether to set up conversation according to described session information.
According to intercommunicating system provided by the invention, described intercommunication server can be independent community or logic entity, includes, but are not limited to separate server and multifunctional service server.
According to intercommunicating system provided by the invention, it is to adopt WLAN that described not support resource reservation sip terminal includes, but are not limited to, the IMS network terminal, external network sip terminal that xDSLIMS inserts, also comprise the equipment of not supporting prerequisite Precondition mechanism, as connecting the MGCF entity of PSTN; Described resource reservation sip terminal can be the IMS network terminal that adopts GPRS to insert.
A kind of IMS network sip terminal intercommunicating system provided by the invention and method thereof, utilizing intercommunication server to finish flow process transforms, conversion logic is moved to intercommunication server from sip terminal, reduced requirement to terminal or other access devices, the intercommunication of the sip terminal of having realized not possessing the resource reservation function and SIP equipment that must resource reservation, satisfying the IMS basic framework, under the situation that existed system is changed and influence is minimum, realized in the IMS network that support resource is not reserved and must the resource reservation terminal between intercommunication, make the terminal that does not possess the resource reservation function also can insert the IMS network, carry out alternately with the terminal in the IMS network, effectively improved the compatibility of IMS network to early stage terminal, strengthened the accessibility of network, for core network seamlessly transit and existing subscriber's original investment provides assurance, the upgrading that has reduced core network is to the influence of existing terminal equipment.
Description of drawings
Further the present invention is described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is that the present invention realizes that support resource reserves the terminal and the system configuration schematic diagram of support resource reservation terminal mutual not.
Fig. 2 realizes not a kind of schematic flow sheet of support resource reservation terminal of resource reservation terminal call by the method among the present invention.
Fig. 3 realizes not a kind of schematic flow sheet of support resource reservation terminal call resource reservation terminal by the method among the present invention.
Embodiment
At first, system of the present invention is described:
As shown in Figure 1, system of the present invention mainly consists of the following components:
(1) the IMS terminal 101, wherein insert, must carry out resource reservation, support the prerequisite Precondition expansion of SIP on the signaling as what GPRS inserted the IMS network by the few access way of wireless network equiband resource, and require in call establishment, use prerequisite Precondition mechanism;
Outside sip terminal 102, the sip terminal of non-IMS network inserts IMS by the Mm reference point among the 3GPP TS24.229, does not require and carries out resource reservation, does not support prerequisite Precondition mechanism on the signaling;
(2) act on behalf of conversation control entity Proxy Call Session Control Function, be called for short P-CSCF, this acts on behalf of the access that conversation control entity 103 is responsible for IMS terminal 101, the SIP request and the response of IMS terminal 101 are transmitted to serving session control entity 104, simultaneously, also SIP request and response are transmitted to IMS terminal 101; Be responsible for providing SIP signaling integrity protection, keep IMS terminal 101 and act on behalf of Security Association between the conversation control entity 103, and the sip message from IMS terminal 101 is decompressed and compresses.
(3) serving session control entity Serving Call Session Control Function, be called for short S-CSCF, this serving session control entity 104, the greffier registar that serves as IMS terminal 101, authenticate by IMS Authentication and Key Agreement mechanism, realize the mutual authentication between IMS terminal 101 and home network; Carry out session control, select suitable routing forwarding request and response.On the other hand, according to user's CAMEL-Subscription-Information, call request triggers is arrived intercommunication server 105.In the present invention, also be responsible for inserting outside sip terminal 102;
(4) intercommunication server 105, based on the application server of SIP, in call establishment, provide service for insert IMS terminal 101 as the GPRS of resource reservation sip terminal with the intercommunication of reserving the outside sip terminal 102 of sip terminal as support resource not.
Wherein: (1) does not support that the sip terminal of prerequisite Precondition mechanism is a Generalized S IP terminal, both can be the narrow sense sip terminal, can be miscellaneous equipment yet, for example, connects the MGCF of PSTN network; (2) intercommunication server 105 is logic entities, and it both may reside in one independently in the physical entity, also can be the part of other service servers; (3) IMS terminal 101 and outside sip terminal 102 can provide service by same serving session control entity 104, also can provide service by different serving session control entities 104; (4) do not support that the sip terminal of prerequisite Precondition mechanism can also be the terminal in the IMS network; (5) sip terminal of external IP network can insert the IMS network by serving session control entity 104, also can insert the IMS network by inquiry conversation control entity I-CSCF;
Second step illustrated the present invention in conjunction with specific embodiments, in the present embodiment, as Fig. 2 and 3, comprised IMS terminal 101 in the IMS home network 21, acted on behalf of conversation control entity 103, serving session control entity 104 and intercommunication server 105; External network 22 inserts outside sip terminal 102, and for convenience of description, IMS terminal 101 wherein is resource reservation sip terminals, and outside sip terminal 102 is that support resource is not reserved sip terminal.
(1) operation principle:
1. the resource reservation sip terminal is called out not support resource reservation sip terminal, mainly comprises step:
11) the resource reservation sip terminal makes a call to support resource sip terminal not, and call signaling is through intercommunication server 105;
12) support resource is not reserved sip terminal and is returned failure response, wherein, illustrates that failure cause is not support prerequisite Precondition flow process;
13) intercommunication server 105 is analyzed call signaling, determine call failure be since not support resource reserve sip terminal and do not support prerequisite Precondition flow process, intercommunication server 105 uses the flow process of non-prerequisite Precondition, reserves sip terminal to support resource not again and makes a call;
14) intercommunication server 105 uses Precondition and non-Precndition flow process and intercommunication respectively, exchange both sides' session information;
15) successful exchange session information between the sip terminal is set up conversation.
2. support resource is not reserved sip terminal and is called out support resource reservation sip terminal, mainly comprises step:
21) support resource is not reserved sip terminal and is made a call call signaling process intercommunication server 105 to the resource reservation sip terminal;
22) the resource reservation sip terminal returns failure response, requires to use prerequisite Precondition flow process;
23) intercommunication server 105 is analyzed call signaling, determines that call failure is that prerequisite Precondition flow process is used in requirement, and intercommunication server 105 uses prerequisite Precondition flow process, reserves sip terminal to support resource again and makes a call;
24) intercommunication server 105 uses Precondition and non-Precondition flow process and intercommunication respectively, exchange both sides' session information;
25) successful exchange session information between the sip terminal is set up conversation.
Wherein, (1) intercommunication server 105 all indicates in whole and resource reservation sip terminal interactive signaling process and supports prerequisite Precondition, and the process of reserving terminal interaction at whole and support resource not all illustrates does not use prerequisite Precondition; (2) transform mode of prerequisite precondition and non-prerequisite precondition flow process can have multiple, can be according to actual conditions, select diverse ways; (3) to carry out the opportunity that flow process transforms can be when terminal is returned failure response to server, also can carry out according to attribute of user in the request of process user initial session.
(2) the concrete Signalling exchange flow process in the corresponding intercommunication process:
1. the resource reservation sip terminal is called out not support resource reservation sip terminal flow process, be that the IMS terminal 101 of resource reservation is called out the outside sip terminal 102 that support resource is not reserved: when intercommunication server 105 receives after outside sip terminal 102 do not support the failure response of prerequisite Precondition ability, failure response is not passed through IMS terminal 101, and be to use the flow process of non-prerequisite Precondition to make a call to outside sip terminal 102 again, represent outside sip terminal 102 on the one hand, use prerequisite Precondition flow process and IMS terminal 101 to carry out alternately, represent IMS terminal 101 on the other hand, use non-prerequisite Precondition flow process and outside sip terminal 102 to carry out alternately, the final intercommunication that realizes IMS terminal 101 and outside sip terminal 102, specifically as shown in Figure 2, comprise step: (omitted IMS terminal 101 among the figure and acted on behalf of conversation control entity 103, Signalling exchange between the serving session control entity 104 only represents that with stain signaling is through this network element.)
201) IMS terminal 101 processes are acted on behalf of conversation control entity 103, serving session control entity 104, and intercommunication server 105 is initiated the initial session requests to outside sip terminal 102, wherein, requires to use prerequisite precondition in the conversation establishing process;
202) outside sip terminal 102 sends failure response to serving session control entity 104, points out not support prerequisite Precondition ability;
203) serving session control entity 104 is transmitted this failure response to intercommunication server 105, points out not support prerequisite Precondition ability;
204) intercommunication server 105 sends response confirmation to serving session control entity 104;
205) serving session control entity 104 is transmitted this response confirmation to outside sip terminal 102, finishes the session of intercommunication server 105 and outside sip terminal 102;
206) intercommunication server 105 sends the conversation request that outside sip terminal 102 is initiated again to serving session control entity 104; In request, do not require and support prerequisite Precondition, simultaneously, for fear of follow-up outside sip terminal 102 is carried out the medium handover operation, in request, do not carry the media information agreement Session Description Protocol of IMS terminal 101, be called for short SDP;
207) serving session control entity 104 is transmitted this conversation request of initiating again to outside sip terminal 102;
208) outside sip terminal 102 receives conversation request and returns ring and respond to serving session control entity 104;
209) serving session control entity 104 is transmitted this ring response to intercommunication server 105;
210) the outside sip terminal 102 of intercommunication server 105 representatives carries out the mutual of prerequisite Precondition flow process with IMS terminal 101.Because intercommunication server 105 does not obtain the SDP media information of outside sip terminal 102 as yet, therefore need to use the media information and the IMS terminal 101 of the outside sip terminal of fabricating 102 to carry out alternately, make IMS terminal 101 carry out the resource reservation operation;
211) after the success of IMS terminal 101 resource reservation, intercommunication server 105 is transmitted the ring response to IMS terminal 101, the ring of notice IMS terminal;
212) outside sip terminal 102 sends the call setup response to serving session control entity 104, wherein, carries the SDP media information of outside sip terminal 102;
213) serving session control entity 104 is transmitted this call setup response to intercommunication server 105;
214) media information of the outside sip terminal 102 of intercommunication server 105 uses obtains the final media information of IMS terminal 101 to IMS terminal 101 medium handover operations;
215) intercommunication server 105 sends the response confirmation request that outside sip terminal 102 is sent to serving session control entity 104, notifies outside sip terminal 102 call setups.In request, carry IMS terminal media information, make outside sip terminal finish the SDP media negotiation;
216) serving session control entity 104 is transmitted this response confirmation request to outside sip terminal 102;
217) intercommunication server 105 sends the call setup response to IMS terminal 101, notice IMS terminal 101 call setups;
218) IMS terminal 101 is returned the response confirmation request and is given intercommunication server 105, and IMS terminal 101 is set up with outside sip terminal 102 conversations.
2. support resource is not reserved sip terminal and is called out support resource reservation sip terminal flow process, promptly the IMS terminal 101:IMS terminal 101 of the outside sip terminal 102 call resources reservation of support resource reservation is not being received conversation request, find that calling terminal does not use prerequisite Precondition, return failure response to intercommunication server 105, indicating session foundation in response needs to use prerequisite.After intercommunication server 105 is received this response, be not transmitted to outside sip terminal 102, but again to IMS terminal 101 initiation session, in conversation request, indicate local terminal and support Precondition, like this, on behalf of outside sip terminal 102 and IMS terminal 101, intercommunication server 105 carry out the mutual of support resource reservation on the one hand, represent IMS terminal 101 and outside sip terminal 102 to carry out the mutual of not support resource reservation on the other hand, the final intercommunication that realizes IMS terminal 101 and outside sip terminal 102, specifically as shown in Figure 3, comprise: (omitted IMS terminal 101 among the figure and acted on behalf of conversation control entity 103, Signalling exchange between the serving session control entity 104 only represents that with stain signaling is through this network element.)
301) outside sip terminal 102 is initiated the initial session request to IMS terminal 101, carries the SDP media information of outside SIP in request, and does not indicate local terminal support prerequisite Precondition;
302) IMS terminal 101 analysis session requests find that opposite end sip terminal 102 does not indicate support prerequisite Precondition, return failure response to intercommunication server 105, indicate to require opposite end sip terminal 102 to support prerequisite Precondition in response;
303) intercommunication server 105 returns response confirmation, finishes the session with IMS terminal 101;
304) intercommunication server 105 starts flow process compatible processing logic, initiates new conversation request again, indicates local terminal 105 and support prerequisite precondition in request, and carry the SDP media information of outside sip terminal 102;
305) it is mutual that IMS terminal 101 and intercommunication server 105 carry out normal prerequisite Precondition, and IMS terminal 101 is carried out the resource reservation operation, and the SDP information that intercommunication server 105 will be consulted successful IMS terminal 101 is kept at this locality;
306) after 23 successes of IMS terminal 101 resource reservation, send ring and respond to intercommunication server 105;
307) intercommunication server 105 forwarding rings respond to serving session control entity 104;
308) the 104 forwarding rings of serving session control entity respond to outside sip terminal 102, notify outside sip terminal 102 rings;
309) IMS terminal 101 sends session to intercommunication server 105 and sets up response;
310) intercommunication server 105 sends response confirmation, and 101 sessions of notice IMS terminal are set up;
311) intercommunication server 105 sends to serving session control entity 104 response is set up in the session of outside sip terminal 102, carries the SDP media information that is kept at local IMS terminal 101 in response;
312) serving session control entity 104 is transmitted this session to outside sip terminal 102 and is set up response;
313) outside sip terminal 102 sends response confirmation message to serving session control entity 104, and 105 sessions of notice intercommunication server are set up;
314) serving session control entity 104 is transmitted this response confirmation message;
315) IMS terminal 101 is set up with the session of outside sip terminal 102.
Claims (10)
1, a kind of IMS network sip terminal interoperability methods, it is characterized in that, intercommunication server (105) is set in the IMS network, comprise the resource reservation sip terminal call out not support resource reserve sip terminal and not support resource reserve sip terminal call resources reservation sip terminal, this calling procedure is: call out side's resource reservation sip terminal and use the prerequisite flow process to make a call or receive the calling of initiating by the prerequisite flow process, calling the opposing party not support resource reservation sip terminal receives the calling of initiating by non-prerequisite flow process or uses non-prerequisite flow process to make a call, intercommunication server (105) uses prerequisite and non-prerequisite flow process and intercommunication respectively, and described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and do not used prerequisite flow process exchange both sides session information whole; Described resource reservation sip terminal and support resource reserve successfully do not exchange described session information between the sip terminal after, determine whether to set up conversation according to described session information.
According to the described interoperability methods of claim 1, it is characterized in that 2, described resource reservation sip terminal is called out not support resource reservation sip terminal, this calling procedure specifically comprises:
2.1) calling party, the resource reservation sip terminal is reserved sip terminal to support resource not and is made a call, and corresponding signaling flow is through intercommunication server (105);
2.2) callee, support resource is not reserved sip terminal and is returned failure response and failure cause thereof;
2.3) intercommunication server (105) analyze and according to the failure cause of described failure response use non-prerequisite flow process again to this not support resource reserve sip terminal and initiate this calling;
2.4) intercommunication server (105) uses prerequisite and non-prerequisite flow process and intercommunication respectively, exchange both sides session information;
2.5) both sides' exchange session information and set up or do not set up conversation according to described session information.
According to the described interoperability methods of claim 1, it is characterized in that 3, described not support resource is reserved the sip terminal call resources and reserved sip terminal, this calling procedure specifically comprises:
3.1) calling party, support resource reservation sip terminal does not make a call to the resource reservation sip terminal, and corresponding signaling flow is through intercommunication server (105);
3.2) callee, support resource is reserved sip terminal and is returned failure response and failure cause thereof;
3.3) intercommunication server (105) analyzes and use the prerequisite flow process to initiate this calling to this resource reservation sip terminal again according to the failure cause of described failure response;
3.4) intercommunication server (105) uses non-prerequisite and prerequisite flow process and intercommunication respectively, exchange both sides session information;
3.5) both sides' exchange session information and set up or do not set up conversation according to described session information.
4, according to claim 2 or 3 described interoperability methods, it is characterized in that, this method comprises that also calling both sides all is that described resource reservation sip terminal is directly set up calling by the prerequisite flow process, and perhaps calling both sides all is that described not support resource is reserved sip terminal directly by non-prerequisite flow process foundation calling.
According to the described interoperability methods of claim 1, it is characterized in that 5, described not support resource is reserved the sip terminal call resources and reserved sip terminal, this calling procedure specifically comprises:
5.1) calling party not support resource reserve sip terminal and make a call to callee's resource reservation sip terminal, corresponding signaling flow is through intercommunication server (105);
5.2) be that support resource is not reserved sip terminal and described callee is the resource reservation sip terminal according to described calling party, described intercommunication server (105) uses the prerequisite flow process to initiate this calling to this resource reservation sip terminal again;
5.3) intercommunication server (105) uses non-prerequisite and prerequisite flow process and intercommunication respectively, exchange both sides session information;
5.4) both sides' exchange session information and set up or do not set up conversation according to described session information.
According to the described interoperability methods of claim 1, it is characterized in that 6, described resource reservation sip terminal is called out not support resource reservation sip terminal, this calling procedure specifically comprises:
6.1) calling party's resource reservation sip terminal to the callee not support resource reserve sip terminal and make a call, corresponding signaling flow is through intercommunication server (105);
6.2) intercommunication server (105) analyze and according to described calling party be resource reservation sip terminal and described callee be not support resource reserve sip terminal use non-prerequisite flow process again to this not support resource reserve sip terminal and initiate this calling;
6.3) intercommunication server (105) uses non-prerequisite and prerequisite flow process and intercommunication respectively, described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and is not used prerequisite flow process exchange both sides session information whole;
6.4) described resource reservation sip terminal and not support resource reserve sip terminal both sides exchange session information, and set up or do not set up conversation according to described session information.
7, according to claim 5 or 6 described interoperability methods, it is characterized in that, this method comprises that also described intercommunication server (105) judgement calling both sides all is to set up by the prerequisite flow process behind the described resource reservation sip terminal to call out again, and judges that perhaps calling both sides all is to set up calling by non-prerequisite flow process again after described not support resource is reserved sip terminal.
8, a kind of IMS network sip terminal intercommunicating system is used to realize resource reservation and the not intercommunication between the support resource reservation sip terminal, comprising:
Act on behalf of conversation control entity (103), be used to insert the IMS network terminal and transmit the IMS network terminal and the serving session control entity between SIP request and response;
Serving session control entity (104) is used for session control, selects suitable routing forwarding request and response, and call request triggers is arrived intercommunication server; Insert simultaneously or insert the external network sip terminal by the inquiry conversation control entity;
It is characterized in that, also comprise:
Intercommunication server (105), use respectively prerequisite and non-prerequisite flow process and resource reservation and not support resource reserve sip terminal and carry out communication, described intercommunication server (105) is reserved the mutual process of sip terminal with support resource not and is not used prerequisite flow process exchange both sides session information whole; Described resource reservation sip terminal and support resource reserve successfully do not exchange described session information between the sip terminal after, determine whether to set up conversation according to described session information.
According to the described intercommunicating system of claim 1, it is characterized in that 9, described intercommunication server (105) is independent community or logic entity.
According to the described intercommunicating system of claim 1, it is characterized in that 10, it is the IMS network terminal (101), external network sip terminal (102) or the MGCF entity that connects PSTN that described not support resource is reserved sip terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200710080326XA CN100488313C (en) | 2007-03-02 | 2007-03-02 | SIP terminal of IMS network interworking system and method thereof |
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| CNB200710080326XA CN100488313C (en) | 2007-03-02 | 2007-03-02 | SIP terminal of IMS network interworking system and method thereof |
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| CN100488313C true CN100488313C (en) | 2009-05-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102082766B (en) * | 2009-12-01 | 2014-07-02 | 中兴通讯股份有限公司 | User equipment (UE) access method and device in IP (internet protocol) multimedia subsystem (IMS) |
| CN106856469A (en) * | 2015-12-09 | 2017-06-16 | 中国电信股份有限公司 | Resource reservation mechanism implementation method, application server and system |
| CN106332193A (en) * | 2016-08-18 | 2017-01-11 | 中国联合网络通信集团有限公司 | Method for processing video call service and terminal equipment |
| CN108260170B (en) * | 2016-12-28 | 2020-07-28 | ***通信集团辽宁有限公司 | Resource reservation control method and MGCF unit |
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| CN109905899B (en) * | 2019-02-13 | 2021-03-19 | Oppo广东移动通信有限公司 | IMS call initiating method, device and computer readable storage medium |
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| IP multimedia call control protocol based onSession Initiation Protocol (SIP)and Session Description Protocol (SDP),. 3rd，Generation，Partnership，Project.3GPP TS 24.229 V7.6.0. 2006 * |
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| CN101014153A (en) | 2007-08-08 |
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