CN101459874A - Implementing method for single session color video service - Google Patents
Implementing method for single session color video service Download PDFInfo
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- CN101459874A CN101459874A CNA2008100993023A CN200810099302A CN101459874A CN 101459874 A CN101459874 A CN 101459874A CN A2008100993023 A CNA2008100993023 A CN A2008100993023A CN 200810099302 A CN200810099302 A CN 200810099302A CN 101459874 A CN101459874 A CN 101459874A
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Abstract
The invention provides a method for realizing single-dialog color image service which comprises that: a color image application functional entity adopts a single-dialog mode to play the color images to the called party after receiving calling requirements from a calling party, the called party initiates responding information to respond the calling requirements, the color image application functional entity transmits an SDP of the calling party to the called party after receiving the responding information and before transferring the responding information, the called party transmits the SDP of the called party to respond the SDP of the calling party, the color image application functional entity transmits the SDP to the calling party after receiving the SDP of the called party, and builds a session between the calling party and the called party through utilizing the SDP of the calling party and the SDP of the called party.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of implementation method of single session color image service.
Background technology
IP (Internet Protocol, network interconnection agreement) IP multimedia subsystem, IMS (IPMultimedia Core Network Subsystem, be called for short IMS) be by third generation partner program (3rd Generation Partnership Project, abbreviation 3GPP) a kind of IP-based network framework that proposes, made up one opening and service environment flexibly, support multimedia application, can provide abundant multimedia service for the user.
In the IMS business system, key-course separates with operation layer, and key-course does not provide concrete business, and functions such as necessary triggering, route, charging only are provided to operation layer.Professional triggering and controlled function are CSCF (Call Session ControlFunction in the key-course, be called for short CSCF, be divided into and act on behalf of Proxy (P-CSCF), inquiry Interrogating (I-CSCF) and service Serving (S-CSCF) three types, that wherein take the main responsibility is Serving, the Interrogating type is optional) finish, operation layer is by a series of application servers (Application Server, be called for short AS) form, concrete business service can be provided.Key-course (S-CSCF) calls the business on the AS according to user's professional triggering of CAMEL-Subscription-Information control, realizes business function.End-to-end equipment in the session is called user equipment (UE) (User Equipment), is responsible for mutual with the user.These functional entitys use SIP (Session Initiation Protocol) agreement communication.In the business that needs play multimedia information, can need Multimedia Resource Function (Media Resource Function, be called for short MRF, be divided into control section MRFC and medium processing section MRFP) participation, be also referred to as media server, its control section is responsible for the translation of the SIP signaling of SE and is interpreted as instruction to MRFP, otherwise perhaps with the response translation of MRFP be interpreted as the SIP signaling that sends to SE, and the transmission and the reception of Media Stream are responsible in the processing section.
Session Initiation Protocol can be used as the bearing bed of Session Description Protocol (SDP---Session DescriptionProtocol), and SDP is responsible for carrying out the negotiation of media resource information, comprises medium type, medium link address, medium connectivity port, information such as bandwidth requirement.The SDP protocol contents is divided into request and responds two kinds, and each request must have a response.
Be a kind of business among the IMS simultaneously in the call establishment to the business of called play multimedia information, this business also can be described as color image service, permission is in calling procedure, play by the good multimedia messages of calling party's customization in advance to the callee, and the multimedia messages that stops not stop as yet after the callee replys is play.The single session polychrome is a kind of implementation of color image service, promptly finishes business realizing in a SIP dialog, and does not need to introduce new dialogue.
In order to simplify description, in the diagram polychrome AS and S-CSCF have been drawn as an entity, theirs between the two be the flow process of standard alternately.
Fig. 1 is the basic messae flow process figure of existing single session color image service, and it is called to have described calling, and to called broadcast polychrome, after user answer, the polychrome server is initiated the situation of media re-negotiation to the polychrome server in calling procedure, and its process is as follows:
Step 101, the SDP request is carried in the UE-A request of making a call, and such as sending INVITE (invitation) message, carries the SDP request in message body, and the forwarding of message travels P-CSCF and S-CSCF arrives polychrome AS;
Step 102, polychrome AS calls out the polychrome media server, is not with any SDP information, message travels S-CSCF;
Step 103, polychrome media server answering call such as sending " 200OK " message, carries the SDP request of polychrome session in the message body, and message travels S-CSCF arrives polychrome AS;
Step 104, polychrome AS calls out UE-B, such as sending INVITE, carries polychrome SDP request in the message body, message travels S-CSCF;
Step 105, UE-B receives message related to calls, sends to receive the response temporarily, such as sending the message with " 1 " beginning such as " 183 Session Progress " message, carries the SDP response in the message body, message travels S-CSCF arrives polychrome AS;
Step 106, polychrome AS receives temporarily receives the response, and send to the polychrome media server and confirm response message, such as sending ACK message, the SDP response that carrying in the message body receives the response temporarily carries, message travels S-CSCF;
Step 107, the polychrome media server is received the affirmation response message, plays color image information to the callee;
Step 108, called subscriber answer is called out, and UE-B sends response message, and such as sending " 200 OK " message, message travels S-CSCF arrives polychrome AS;
Step 109, polychrome AS transmits response message and gives calling party, message travels S-CSCF and P-CSCF;
Step 110, P-CSCF receives response message, indication billing function begin to charge (this is that standard code is received the response message institute charging process of triggering automatically by P-CSCF);
Step 111, simultaneously, P-CSCF transmits response message and gives UE-A;
Step 112, UE-A receives response message, sends to confirm response message to the callee, such as sending ACK message, message travels P-CSCF and S-CSCF arrive polychrome AS;
Step 113, polychrome AS transmits and confirms response message to the callee, and message travels S-CSCF arrives UE-B;
Step 114, simultaneously, polychrome AS sends recall message to the callee, such as sending re-INVITE message, is not with any SDP information in the message body, and message travels S-CSCF arrives UE-B;
Step 115, UE-B sends it back and answers recall message, such as sending " 200 OK " message, carries the new SDP request of UE-B in the message body, and message travels S-CSCF arrives polychrome AS;
Step 116, polychrome AS sends recall message to the calling party after receiving that the response recall is message, and such as sending re-INVITE message, carry in the message body the new SDP request of receiving, message travels S-CSCF and P-CSCF arrive UE-A;
Step 117, UE-A sends it back and answers recall message, such as sending " 200 OK " message, carries the SDP response of UE-A in the message body, and message travels P-CSCF and S-CSCF arrive polychrome AS;
Step 118, polychrome AS sends to the callee and confirms to receive the response, and such as sending ACK message, carries the SDP response of the UE-A that receives in the message body, and message travels S-CSCF arrives UE-B;
Step 119, so far, UE-A has set up medium with UE-B and has been connected, and begins conversation.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: after the beginning of chargeing, still have many signaling contacts could really begin conversation, make charge information and actual conditions have greater difference, causing chargeing begins too early, makes that user's impression is very bad.
Summary of the invention
The present invention aims to provide a kind of implementation method of single session color image service, begin solve to charge problem too early.
Provide a kind of implementation method of single session color image service according to embodiments of the invention, comprise the steps: that the polychrome Application Function receives call request from the calling party after, adopt the single session mode to play polychrome to the callee; The callee initiates response message with the responding call request; The polychrome Application Function is after receiving response message and transmit the SDP that response message forward direction callee sends the calling party; The callee sends callee's SDP to respond calling party's SDP; The polychrome Application Function mails to the calling party with it after receiving callee's SDP; Utilize calling party's SDP and callee's SDP, between calling party and callee, set up conversation.
Preferably, calling party's SDP is carried in call request, and the polychrome Application Function also comprises after receiving call request from the calling party: the polychrome Application Function is preserved calling party's SDP.
Preferably, the polychrome Application Function specifically comprises to the SDP that the callee sends the calling party after receiving response message: the polychrome Application Function obtains calling party's SDP from this locality, and the polychrome Application Function sends the recall of the SDP that carries the calling party message to the callee.
Preferably, after the polychrome Application Function is received callee's SDP, it is mail to the calling party specifically comprises: the callee to the polychrome Application Function respond recall, wherein carry callee's SDP; The polychrome Application Function carries callee's SDP in the response message of transmitting to the calling party.
Preferably, after the polychrome Application Function is received callee's SDP, it is mail to the calling party specifically comprises: the callee to the polychrome Application Function respond recall, wherein carry called SDP; The polychrome Application Function wherein carries callee's SDP to the response that the calling party sends non-call request.
Preferably, the callee initiates also to comprise before the response message: the polychrome Application Function wherein carries callee's SDP response to the interim response of calling party's transmission at call request; The calling party sends pre-affirmation or updating message to the polychrome Application Function, wherein carries new SDP request.
Preferably, called party to calling party is responded called media resource information and is specifically comprised: called to polychrome AS respond recall, wherein carry the SDP response that comprises called media resource information; Polychrome AS responds pre-affirmation or renewal to caller, wherein carries the SDP response; Polychrome AS responds answering call to caller.
Preferably, the polychrome Application Function increases the zero bandwidth sign in the SDP response.
Preferably, adopting the single session mode to play polychrome to the callee specifically comprises: the direction indication of transmitting the medium type in the SDP request of polychrome is set to only transmission.
Preferably, adopting the single session mode to play polychrome to the callee specifically comprises: increase the P-Early-Media header field in the sip message of the SDP request of transmitting polychrome.
This embodiment is because revised the step order of traditional color image service implementation method, caller is put into to the step of the SDP of called notice oneself (being media resource information) carries out after replying, so having overcome charges begin problem too early, and then reached the effect that reduces the charging error, also reduced simultaneously and replied later execution in step, improved user experience.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart of the basic messae of existing single session color image service;
Fig. 2 shows the flow chart according to the implementation method of the single session color image service of the embodiment of the invention;
Fig. 3 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention one;
Fig. 4 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention two;
Fig. 5 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention three.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 2 shows the flow chart according to the implementation method of the single session color image service of the embodiment of the invention, comprises the steps:
Step S10 after polychrome Application Function (can be realized by polychrome AS and polychrome media server) receives the call request from the calling party, adopts the single session mode to play polychrome to the callee;
Step S20, callee initiate response message with the responding call request;
Step S30, polychrome Application Function are after receiving response message and transmit the SDP (being calling party's media resource information) (this step has been postponed the charging process that triggers on the P-CSCF) that response message forward direction callee sends the calling party;
Step S40, callee send callee's SDP (being callee's media resource information) to respond calling party's SDP;
Step S50, the polychrome Application Function mails to the calling party with it after receiving callee's SDP;
Step S60 utilizes calling party's SDP and callee's SDP, sets up conversation between calling party and callee.
As can be seen, in the prior art, transmitting response message is to carry out before step S30, then changes into later execution in the present embodiment, because charging process is to be triggered by the response message of transmitting, makes charging also begin laterly so do like this.
This embodiment is because revised the step order of traditional color image service implementation method, caller is put into to the step of the media resource information of called notice oneself carries out after replying, so having overcome charges begin problem too early, and then reached the effect that reduces the charging error, also reduced simultaneously and replied later execution in step, improved user experience.
Preferably, calling party's SDP is carried in call request, and the polychrome Application Function also comprises after receiving call request from the calling party: the polychrome Application Function is preserved calling party's SDP.The SDP request is carried in the call request of caller, wherein comprises the media resource information of caller, and polychrome AS has preserved media resource information.
Preferably, step S30 specifically comprises: the polychrome Application Function obtains calling party's SDP from this locality, and the polychrome Application Function sends the recall of the SDP that carries the calling party message to the callee.For example, polychrome AS carries recall from SDP request to called transmission, wherein comprise the media resource information of taking from polychrome AS this locality.Here utilize polychrome AS to increase the function of preserving media resource information, thereby can directly get this information, obtain the step of this information and omitted a message from caller, and and then avoided triggering P-CSCF to begin charging process from polychrome AS.
Preferably, step S50 specifically comprises: the callee to the polychrome Application Function respond recall, wherein carry callee's SDP; The polychrome Application Function carries callee's SDP in the response message of transmitting to the calling party.For example, called to polychrome AS respond recall, wherein carry the SDP response that comprises called media resource information; Polychrome AS responds answering call by P-CSCF to caller, wherein carries the SDP response.
Preferably, step S50 specifically comprises: the callee to the polychrome Application Function respond recall, wherein carry called SDP; The polychrome Application Function wherein carries callee's SDP to the response that the calling party sends non-call request.For example, called to polychrome AS respond recall, wherein carry the SDP response that comprises called media resource information; Polychrome AS sends the response of non-call request by P-CSCF to caller, wherein carries the SDP response; Polychrome AS responds answering call by P-CSCF to caller.
More than provided and to have transmitted response message in the embodiment of the invention and be put into two preferred embodiments carrying out after the step S30.
Preferably, also comprise before the step S20: the polychrome Application Function wherein carries callee's SDP response to the interim response of calling party's transmission at call request; The calling party sends pre-affirmation or updating message to the polychrome Application Function, wherein carries new SDP request; The polychrome Application Function does not mail to the callee with this new SDP request.Further, called party to calling party is responded called media resource information and is specifically comprised: called to polychrome AS respond recall, wherein carry the SDP response that comprises called media resource information; Polychrome AS responds pre-affirmation or renewal to caller, wherein carries the SDP response; Polychrome AS responds answering call to caller.
For example, also comprising after called broadcast polychrome by the polychrome media server: polychrome AS to the interim response of caller transmission at call request, wherein carries the SDP response that requires the caller reserved resource by P-CSCF; Caller sends pre-affirmation or renewal by P-CSCF to polychrome AS, wherein carries new SDP request, and it comprises the reserved resource information of caller.More than realized the resource reservation of caller.What be different from prior art here is, reserved resource is execution after playing polychrome, and is not transmitted to the answer of caller called.Further, called to polychrome AS respond recall, wherein carry the SDP response that comprises called media resource information; Polychrome AS responds pre-affirmation or renewal by P-CSCF to caller, wherein carries the SDP response; Polychrome AS responds answering call by P-CSCF to caller.
Can see in the above-mentioned steps that polychrome AS responds to caller by P-CSCF and confirms or upgrade to carry and reply the called SDP response in back in advance, thereby has saved interacting message.
Preferably, the polychrome Application Function increases the zero bandwidth sign in the SDP response.This can be avoided in the process of consulting resource, and caller is mistakenly to called transfer medium information.
Preferably, adopting the single session mode to play polychrome to the callee specifically comprises: the direction indication of transmitting the medium type in the SDP request of polychrome is set to only transmission (sendonly).This can be avoided, and caller is called still promptly to begin conversation in the process of playing polychrome, thereby has avoided the called charging process that gets around of caller.
Preferably, adopting the single session mode to play polychrome to the callee specifically comprises: increase the P-Early-Media header field in the sip message of the SDP request of transmitting polychrome.This also can be avoided, and caller is called still promptly to begin conversation in the process of playing polychrome, thereby has avoided the called charging process that gets around of caller.
Further specify the present invention with three application examples below.
Embodiment one
Fig. 3 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention one, it is called to have described calling, the polychrome server in calling procedure to called broadcast polychrome, after user answer, the polychrome server is initiated the situation of media re-negotiation, and its process is as follows:
Step 301, the SDP request is carried in the UE-A request of making a call, and such as sending INVITE (invitation) message, carries the SDP request in message body, and the forwarding of message travels P-CSCF and S-CSCF arrives polychrome AS;
Step 302, polychrome AS calls out the polychrome media server, is not with any SDP information, message travels S-CSCF;
Step 303, polychrome media server answering call such as sending the message with " 2 " beginning such as " 200 OK " message, carries the SDP request of polychrome session in the message body, and message travels S-CSCF arrives polychrome AS;
Between the step 301 to 304 following mode can also be arranged, it is the SDP request of band calling party in the step 302, the attribute of all medium types can be arranged to inactive (non-activity), then wounded picture SDP response in the step 303, polychrome AS sends not ACK message with any SDP information to the polychrome media server then, message travels S-CSCF, simultaneously polychrome AS sends not re-INVITE message with any SDP information to the polychrome media server, message travels S-CSCF, after the polychrome media server is received re-INVITE message, transmission " 200 OK " message etc. are carried polychrome SDP request with the message of " 2 " beginning in the message body;
Step 304, polychrome AS calls out UE-B, such as sending INVITE, carry polychrome SDP request in the message body, polychrome AS can be revised as the direction indication of the part or all of medium type in the polychrome SDP request of carrying sendonly (only sending), or in message, add the P-Early-Media header field, and the value of this header field can be made as sendonly, message travels S-CSCF;
Step 305, UE-B receives message related to calls, sends to receive the response temporarily, such as sending the message with " 1 " beginning such as " 183 Session Progress " message, carries callee's SDP response in the message body, message travels S-CSCF arrives polychrome AS;
Step 306, polychrome AS receives temporarily receives the response, and send to the polychrome media server and confirm response message, such as sending ACK message, the SDP response that carrying in the message body receives the response temporarily carries, message travels S-CSCF;
Step 307, the polychrome media server is received the affirmation response message, plays color image information to the callee;
Step 308, called subscriber answer are called out, and UE-B sends response message, such as sending the message with " 2 " beginning such as " 200 OK " message, message travels S-CSCF arrival polychrome AS;
Step 309, polychrome AS sends the affirmation response message to the callee, and such as sending ACK message, message travels S-CSCF arrives UE-B;
Step 310, simultaneously, polychrome AS asks to the SDP that the callee sends the calling party, such as by send re-INVITE message to the callee, carries the SDP request in the step 301 in the message body, and message travels S-CSCF arrives UE-B;
Step 311, after UE-B received calling party's SDP request, loopback callee's SDP response was such as by sending the message with " 2 " beginning such as " 200 OK " message to the calling party, carry callee's SDP response in the message body, message travels S-CSCF arrives polychrome AS;
Following step 312 is optional execution in step, does not generally need to carry out;
Step 312, after polychrome AS receives callee's SDP response, send this SDP response to the calling party, such as by send the message with " 1 " beginning such as " 183 Session Progress " message to the calling party, carry callee's SDP response in the message body, message travels S-CSCF and P-CSCF arrive UE-A;
Following steps 313 are described with the situation that step 312 does not have to carry out;
Step 313 after polychrome AS receives callee's SDP response, responds it is mail to the calling party by sending response message to the calling party and carry this SDP in the message way, and response message be the message that " 200 OK " message etc. starts with " 2 ";
Step 314, P-CSCF receives response message, the indication billing function begins to charge;
Step 315, simultaneously, P-CSCF transmits response message and gives UE-A;
If carried out step 312, then be not with any SDP information in the step 313 and 215;
Step 316, UE-A receives response message, sends to confirm response message to the callee, such as sending ACK message, message travels P-CSCF and S-CSCF arrive polychrome AS;
Step 317, polychrome AS transmits and confirms response message to the callee, and message travels S-CSCF arrives UE-B;
Step 317 can occur in any moment after 211;
Step 318, so far, UE-A has set up medium with UE-B and has been connected, and begins conversation.
This embodiment is because revised the step order of traditional color image service implementation method, caller is put into to the step of the media resource information of called notice oneself carries out after replying, so having overcome charges begin problem too early, and then reached the effect that reduces the charging error, also reduced simultaneously and replied later execution in step, improved user experience.
Embodiment two
Fig. 4 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention two, it is called to have described calling, the polychrome server in calling procedure to called broadcast polychrome, after user answer, the polychrome server is initiated the situation of media re-negotiation, and its process is as follows:
Step 401, the SDP request is carried in the UE-A request of making a call, and such as sending INVITE (invitation) message, carries the SDP request in message body, and the forwarding of message travels P-CSCF and S-CSCF arrives polychrome AS;
Step 402, polychrome AS receives call request, calls out UE-B, such as sending INVITE, carries calling party's SDP request in the message body, message travels S-CSCF;
Step 403, UE-B receives message related to calls, sends to receive the response temporarily, such as sending the message with " 1 " beginning such as " 183 Session Progress " message, carries callee's SDP response in the message body, message travels S-CSCF arrives polychrome AS;
Step 404, polychrome AS receives temporarily receives the response, and calls out the polychrome media server, is not with any SDP information, message travels S-CSCF;
Step 405, polychrome media server answering call such as sending the message with " 2 " beginning such as " 200 OK " message, carries the SDP request of polychrome session in the message body, and message travels S-CSCF arrives polychrome AS;
Between the step 403 to 406 following mode can also be arranged, be the SDP request of band calling party in the step 404 or the SDP request that responds generation based on callee's SDP, the attribute of all medium types can be arranged to inactive (non-activity), then wounded picture SDP response in the step 405, polychrome AS sends not ACK message with any SDP information to the polychrome media server then, message travels S-CSCF, simultaneously polychrome AS sends not re-INVITE message with any SDP information to the polychrome media server, message travels S-CSCF, after the polychrome media server is received re-INVITE message, transmission " 200 OK " message etc. are carried polychrome SDP request with the message of " 2 " beginning in the message body.
Step 406, after polychrome AS receives the response message of polychrome media server, send pre-acknowledge message to the callee, such as sending PRACK message, or transmission updating message, such as sending UPDATE message, carry polychrome SDP request in the message body, this polychrome SDP request may need to adjust by standard-required, CRBT also can be revised as the direction indication of the part or all of medium type in the polychrome SDP request of carrying sendonly (only sending) as AS, or in message, add the P-Early-Media header field, and the value of this header field can be made as sendonly, message travels S-CSCF arrives UE-B;
Step 407, UE-B sends it back in advance acknowledge message or agrees updating message, and both have identical sip message, such as sending the message with " 2 " beginning such as " 200 OK " message, carry called new SDP response in the message body, message travels S-CSCF arrives polychrome AS;
Step 408, polychrome AS sends to the polychrome media server and confirms response message, such as sending ACK message, carries callee's new SDP response in the message body;
Step 409, the polychrome media server is received the affirmation response message, plays color image information to the callee;
Step 410, called subscriber answer are called out, and UE-B sends response message, such as sending the message with " 2 " beginning such as " 200 OK " message, message travels S-CSCF arrival polychrome AS;
Step 411, polychrome AS sends the affirmation response message to the callee, and such as sending ACK message, message travels S-CSCF arrives UE-B;
Step 412, simultaneously, polychrome AS asks to the SDP that the callee sends the calling party, such as by send re-INVITE message to the callee, carries the SDP request in the step 401 in the message body, and message travels S-CSCF arrives UE-B;
Step 413, after UE-B received calling party's SDP request, loopback callee's SDP response was such as by sending the message with " 2 " beginning such as " 200 OK " message to the calling party, carry the SDP response of callee's renewal in the message body, message travels S-CSCF arrives polychrome AS;
Step 414, after polychrome AS receives callee's SDP response, respond it is mail to the calling party by sending response message to the calling party and carry this SDP in message body, response message is the message with " 2 " beginning such as " 200 OK " message, and message travels S-CSCF arrives P-CSCF;
Also can have between step 413 and the step 414 with Fig. 3 in the identical step of step 312, step 414 will be with any SDP information this moment;
Step 415, P-CSCF receives response message, the indication billing function begins to charge;
Step 416, simultaneously, P-CSCF transmits response message and gives UE-A;
Step 417, UE-A receives response message, sends to confirm response message to the callee, such as sending ACK message, message travels P-CSCF and S-CSCF arrive polychrome AS;
Step 418, polychrome AS sends and confirms response message to the callee, and message travels S-CSCF arrives UE-B;
Step 418 can occur in any moment after 413;
Step 419, so far, UE-A has set up medium with UE-B and has been connected, and begins conversation.
This embodiment is because revised the step order of traditional color image service implementation method, caller is put into to the step of the media resource information of called notice oneself carries out after replying, so having overcome charges begin problem too early, and then reached the effect that reduces the charging error, also reduced simultaneously and replied later execution in step, improved user experience.
Embodiment three
Fig. 5 shows the flow chart according to the implementation method of the single session color image service of the preferred embodiment of the present invention three, it is called to have described calling, the polychrome server in calling procedure to called broadcast polychrome, after user answer, the polychrome server is initiated the situation of media re-negotiation, and its process is as follows:
Step 501～409, identical with step 401～409 among Fig. 4;
Step 510, polychrome AS sends temporarily to the calling party and receives the response, such as sending the message with " 1 " beginning such as " 183Session Progress " message, carry the SDP response of the callee in the step 503 in the message body, for preventing that UE-A from data transfer error taking place, polychrome AS can increase the zero bandwidth sign in callee's SDP response, message travels S-CSCF and P-CSCF arrive UE-A;
Step 510 can occur in step 503 between the step 512 whenever;
Step 511, UE-A receives temporarily receiveing the response of step 510, send pre-acknowledge message to the callee, such as sending PRACK message, or the transmission updating message, such as sending UPDATE message, carry calling party's new SDP request in the message body, message travels P-CSCF and S-CSCF arrive polychrome AS, and polychrome AS does not transmit this message and gives the callee;
Step 512, called subscriber answer are called out, and UE-B sends response message, such as sending the message with " 2 " beginning such as " 200 OK " message, message travels S-CSCF arrival polychrome AS;
Step 513, polychrome AS sends the affirmation response message to the callee, and such as sending ACK message, message travels S-CSCF arrives UE-B;
Step 514, simultaneously, polychrome AS asks to the SDP that the callee sends the calling party, such as by send re-INVITE message to the callee, carries the SDP request in the step 401 in the message body, and message travels S-CSCF arrives UE-B;
Step 515, after UE-B received calling party's SDP request, loopback callee's SDP response was such as by sending the message with " 2 " beginning such as " 200 OK " message to the calling party, carry the SDP response of callee's renewal in the message body, message travels S-CSCF arrives polychrome AS;
Step 516, after polychrome AS receives callee's SDP response, respond it is mail to the calling party by sending it back in advance acknowledge message to the calling party or agreeing updating message and in message body, carry this SDP, polychrome AS may need according to the requirement of standard this SDP response to be adjusted, two kinds of message are corresponding to identical sip message, such as sending the message with " 2 " beginning such as " 200 OK " message, message travels S-CSCF and P-CSCF arrive UE-A;
Step 517, polychrome AS sends response message to the calling party, such as sending the message with " 2 " beginning such as " 200 OK " message, is not with any SDP information in the message body, and message travels S-CSCF arrives P-CSCF;
Step 518, P-CSCF receives response message, the indication billing function begins to charge;
Step 519, simultaneously, P-CSCF transmits response message and gives UE-A;
Step 520, UE-A receives response message, sends to confirm response message to the callee, such as sending ACK message, message travels P-CSCF and S-CSCF arrive polychrome AS;
Step 521, polychrome AS sends and confirms response message to the callee, and message travels S-CSCF arrives UE-B;
Step 521 can occur in any moment after 515;
Step 522, so far, UE-A has set up medium with UE-B and has been connected, and begins conversation.
Above embodiment is because revised the step order of traditional color image service implementation method, caller is put into to the step of the media resource information of called notice oneself carries out after replying, so having overcome charges begin problem too early, and then reached the effect that reduces the charging error, also reduced simultaneously and replied later execution in step, improved user experience.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the implementation method of a single session color image service is characterized in that, comprises the steps:
After the polychrome Application Function receives call request from the calling party, adopt the single session mode to play polychrome to the callee;
Described callee initiates response message to respond described call request;
Described polychrome Application Function is after receiving described response message and transmit the SDP that the described callee of response message forward direction sends described calling party;
Described callee sends described callee's SDP to respond described calling party's SDP;
After described polychrome Application Function is received described callee's SDP, it is mail to described calling party;
Utilize described calling party's SDP and described callee's SDP, between described calling party and described callee, set up conversation.
2. implementation method according to claim 1, it is characterized in that, described calling party's SDP is carried in described call request, and described polychrome Application Function also comprises after receiving call request from the calling party: described polychrome Application Function is preserved described calling party's SDP.
3. implementation method according to claim 2 is characterized in that, described polychrome Application Function specifically comprises to the SDP that described callee sends described calling party after receiving described response message:
Described polychrome Application Function obtains described calling party's SDP from this locality,
Described polychrome Application Function sends the recall of the SDP that carries described calling party message to described callee.
4. implementation method according to claim 3 is characterized in that, after described polychrome Application Function is received described callee's SDP, it is mail to described calling party specifically comprise:
Described callee to described polychrome Application Function respond described recall, wherein carry described callee's SDP;
Described polychrome Application Function carries described callee's SDP in the described response message of transmitting to described calling party.
5. implementation method according to claim 3 is characterized in that, after described polychrome Application Function is received described callee's SDP, it is mail to described calling party specifically comprise:
Described callee to described polychrome Application Function respond described recall, wherein carry described called SDP;
Described polychrome Application Function wherein carries described SDP to the response that described calling party sends non-call request;
Described polychrome Application Function is transmitted described response message to described calling party.
6. implementation method according to claim 1 is characterized in that, described callee initiates also to comprise before the response message:
Described polychrome Application Function wherein carries described callee's SDP response to the interim response of described calling party's transmission at described call request;
Described calling party sends pre-affirmation or updating message to described polychrome Application Function, wherein carries new SDP request;
Described polychrome Application Function does not mail to the callee with described SDP request.
7. implementation method according to claim 6 is characterized in that, describedly calledly responds described called media resource information to described caller and specifically comprises:
Described called to described polychrome AS respond described recall, wherein carry and comprise described called SDP response;
Described polychrome AS responds described pre-affirmation or renewal to described caller, wherein carries described SDP response;
Described polychrome AS responds described answering call to described caller.
8. implementation method according to claim 6 is characterized in that, described polychrome Application Function increases the zero bandwidth sign in described SDP response.
9. implementation method according to claim 1 is characterized in that, adopts the single session mode to play polychrome to the callee and specifically comprises: the direction indication of transmitting the medium type in the SDP request of polychrome is set to only transmission.
10. implementation method according to claim 1 is characterized in that, adopts the single session mode to play polychrome to the callee and specifically comprises: increase the P-Early-Media header field in the sip message of the SDP request of transmitting polychrome.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100993023A CN101459874B (en) | 2008-05-09 | 2008-05-09 | Implementing method for single session color video service |
| PCT/CN2008/073875 WO2009135375A1 (en) | 2008-05-07 | 2008-12-30 | Call establishing method for realizing the single dialog color ring service |
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| CN2008100993023A CN101459874B (en) | 2008-05-09 | 2008-05-09 | Implementing method for single session color video service |
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| CN101459874B CN101459874B (en) | 2011-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035682A1 (en) * | 2009-09-28 | 2011-03-31 | 中兴通讯股份有限公司 | Method and equipment for indicating incoming call |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011035682A1 (en) * | 2009-09-28 | 2011-03-31 | 中兴通讯股份有限公司 | Method and equipment for indicating incoming call |
| CN102036201A (en) * | 2009-09-28 | 2011-04-27 | 中兴通讯股份有限公司 | Incoming call prompting method and device |
| CN102036201B (en) * | 2009-09-28 | 2014-11-05 | 中兴通讯股份有限公司 | Incoming call prompting method and device |
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| Publication number | Publication date |
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| CN101459874B (en) | 2011-02-23 |
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