CN101340384B - Method for implementing one-number-business resonance service and adopted application server - Google Patents

The invention discloses a method for realizing ONLY resonance service. A calling user makes a call to an ONLY resonance user, after receiving the call request, an ONLY application server (AS) carries out media negotiation with one of the resonance numbers contracted with the ONLY resonance user; if the media negotiation is successful, the calls to the other resonance numbers contracted with the ONLY resonance user are made; if the media negotiation fails, the other resonance number is selected for carrying out media negotiation, until the calling user and a resonance number carry out media negotiation successfully, later, the calls to the other resonance numbers contracted with the ONLY user are made. By using the method for realizing ONLY resonance service, after the ONLY AS and one of the resonance numbers of the ONLY user carry out media negotiation successfully, then the calls are made to the other ONLY resonance numbers contracted with the ONLY user, and the calls to the other ONLY resonance numbers can be guaranteed to be successful.

Realize the method for one-number-business resonance service and the application server that is adopted

Technical field

The present invention relates to IP Multimedia System, relate in particular to a kind of method of one-number-business resonance service and application server that is adopted realized.

Background technology

At IMS (IP Multimedia System, IP Multimedia System) in, for QoS (the Quality of Service that guarantees medium in the network, service quality), require each network element to support Precondition (prerequisite), Precondition is meant the qos parameter that needs are satisfied, and holds consultation by Offer (providing)/Answer (replying) model of SDP (Session Description Protocol), only reach certain QoS threshold value, just can point out user's ring conversation.Early-Session (session early) is used for solving when early medium change with the conversation medium, and contingent voice sheet is lost the session of problem.

When one number service resonance is meant calling user dials one number service user's one number service number, the a plurality of numbers simultaneously ring related that the one number service user is provided with this one number service number, any one phone can be selected to reply, one of them number call failure, can not influence the calling of other number, the call failure sound can not pass to caller simultaneously; If a user answer then discharges the calling to other number.

At present, also can't under Precondition and Early Session condition, realize one-number-business resonance service in the prior art.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of method of one-number-business resonance service and application server that is adopted realized under Precondition and Early Session condition.

For solving the problems of the technologies described above, a kind of method that realizes one-number-business resonance service of the present invention,

The calling subscriber makes a call to one number service resonance user, and after the one number service application server AS received call request, one of them resonance number of contracting with one number service resonance user carried out media negotiation;

If the media negotiation success is then called out other resonance number that the one number service user contracts;

If media negotiation failure then selects another one resonance number to carry out media negotiation, after calling subscriber and the success of some resonance number media negotiations, other resonance number that the one number service user contracts is called out.

Further, one number service AS uses calling subscriber's medium and one number service resonance number to carry out media negotiation.

Further, when one number service AS calls out at other resonance number that the one number service user is contracted, construct the false medium different, other resonance number that uses this vacation media call one number service user to contract with calling subscriber's medium.

Further, one number service AS is when carrying out media negotiation with one number service resonance number, and when other resonance number that the one number service user is contracted is called out, one number service medium morning that number returns that resonate are set to invalid Inactive.

Further, when with the resonance number answering call of calling subscriber's media negotiation success, calling subscriber and this resonance number are directly conversed.

Further, when one of them of other resonance number of calling out as one number service AS replied, one number service AS carry out the calling subscriber with the resonance number of replying between media negotiation, media negotiation successfully after, converse.

Further, one number service AS carry out the calling subscriber and the resonance number of replying between the method for media negotiation be:

One number service AS sends the call request of not carrying media information to the resonance number of replying;

After the resonance number of replying receives call request, return the media information of himself to one number service AS;

One number service AS sends to Calling Side with this media information after receiving the media information that this resonance number of replying returns, and Calling Side is according to the media information reserved resource of the resonance number of replying, and to the media information of the resonance number echo reply of replying;

Calling Side notice callee side Calling Side resource is available, and carries the media information of available resources in notification message, and after callee side received the media information of available resources, to the media information of Calling Side echo reply, media negotiation was finished.

Further, one number service AS and one number service resonance user one of them resonance number of contracting process of carrying out media negotiation is:

After one number service AS receives the call request of calling out the one number service user, the call request that receives is sent to called service call conversation control function S-CSCF, and the calling subscriber's who carries in the call request that the terminating S-CSCF use receives medium make a call to one of them resonance number of one number service user;

If access success, terminating S-CSCF return the media information of called resonance number to one number service AS;

After one number service AS receives the media information of called resonance number, the media information of this called resonance number is sent to Calling Side, the Calling Side reserved resource;

Calling Side notice callee side Calling Side resource is available, and carries the media information of available resources in notification message, and after callee side received the media information of available resources, to the media information of Calling Side echo reply, media negotiation was finished.

Further, a kind of application server comprises: paging unit and media negotiation unit;

Paging unit is used for the receipt of call request, and notice media negotiation unit carries out media negotiation after receiving call request; After the media negotiation that receives the transmission of media negotiation unit is successfully notified, other resonance number that the one number service user contracts is called out;

The media negotiation unit is used for after the notice of carrying out media negotiation that receives the paging unit transmission, one of them resonance number of contracting with one number service resonance user carries out media negotiation, if the media negotiation success then sends media negotiation to paging unit and successfully notifies; If media negotiation failure then selects another one resonance number to carry out media negotiation, after calling subscriber and the success of some resonance number media negotiations, then send media negotiation and successfully notify to paging unit.

Further, the media negotiation unit uses calling subscriber's medium and one number service resonance number to carry out media negotiation.

In sum, the present invention is after one of them resonance number media negotiation success of one number service AS and one number service user, and other one number service resonance number of contracting to the one number service user makes a call again, can guarantee the success to other one number service resonance number call.

Description of drawings

Fig. 1 is the schematic diagram of the system of application the inventive method;

Fig. 2 is the signaling diagram of the inventive method.

Embodiment

One number service AS of the present invention (Application Server, application server) uses calling subscriber's medium and some resonance numbers to carry out media negotiation, if other number that resonates is then called out in the media negotiation success when calling out a plurality of resonance number; If media negotiation failure then selects another one resonance number to carry out media negotiation,, call out other resonance number again up to the media negotiation success; When calling out other resonance number, the structure one false Session medium different with calling subscriber's medium are called out; Early-Session medium with all called resonance numbers return all are changed to Inactive (invalid), guarantee that the failure sound that called resonance number returns can not pass to Calling Side; If the ring of a called resonance number is arranged, when promptly one number service AS receives one 180 message (ring), send 180 message to Calling Side, Calling Side PSS is when receiving 180 message, to calling subscriber's playing RBT; When in the called resonance number user answer being arranged, then one number service AS discharges the calling for the resonance number of other dont answer; If reply with the called resonance number of calling subscriber's media negotiation success, then calling subscriber and called number can directly be conversed; If other called resonance number replys, then need to carry out the media negotiation of calling subscriber and the Session of the called resonance number of replying; Its method is that one number service AS sends not with the INVITE request of SDP to the called resonance number of replying, and the called resonance number of replying returns Offer to the calling subscriber, after the media negotiation success, begins conversation.

When contracting one number service, need the one number service number is signatory in PSS (PSTN/ISDNSimulation Services, fixed network analog service) earlier, signatory in one number service AS again, PSS is responsible for the basic service of one number service number, and one number service AS load realizes concrete one number service flow process.

Figure 1 shows that the schematic diagram of using system of the present invention, this system comprises: PSS, one number service AS and S-CSCF (Serving Call Session Control Function, service call conversation control function), PSS and one number service AS are undertaken alternately by ISC (IP multimedia service control interface) and S-CSCF respectively, S-CSCF is used for accepting user's registration, carry out generic resource identifier (Universal ResourceIdentifier is called for short URI) analysis and redirected route, trigger AS and finish the control of calling and continue.

Figure 2 shows that the present invention realizes the signaling diagram of the method for one-number-business resonance service, comprises the steps:

101: called PSS is transmitted to one number service AS with the INVITE request that receives after receiving the calling one number service user's that Calling Side sends INVITE request, carries calling subscriber's media information SDP A in the INVITE request;

102: after one number service AS receives the INVITE request, the INVITE request is transmitted to terminating S-CSCF, and the SDP A that carries in the terminating S-CSCF use INVITE request makes a call (the resonance number that terminating S-CSCF is at first called out is called first called subscriber) to one of them resonance number of one number service user;

The present invention uses calling subscriber's media information that first called subscriber is called out, if first called subscriber answer is called out, the calling subscriber can directly converse with first called subscriber, avoids carrying out once more media negotiation, has reduced professional flow process.

103: if to first called subscriber's access success, then terminating S-CSCF returns 183 message of no Reason (reason) head to one number service AS, notice one number service AS first called subscriber supports Precondition and Early-Session, carries first called subscriber's conversation media information SDP B1 and early-media information Early in this 183 message;

If terminating S-CSCF is to first called subscriber's call failure, then send 4XX message or comprise 183 message of Reason head to one number service AS, after one number service AS receives the 4XX message of terminating S-CSCF transmission or comprises 183 message of Reason head, release uses calling subscriber's media information SDP A to call out first called subscriber another resonance number in addition to first called subscriber's calling; The rest may be inferred, and up to access success, terminating S-CSCF returns 183 message to one number service AS.

104: after one number service AS receives 183 message, give called PSS with 183 forwards, the SDP B1 that carries in 183 message that called PSS will receive sends to Calling Side, and Calling Side is according to SDP A and SDP B1 reserved resource;

105: simultaneously, one number service AS returns response message PRACK to 183 message (183 message in the step 103) to terminating S-CSCF, carries the Early Session medium that Early:Inactive notice terminating S-CSCF shields first called subscriber in PRACK;

106: called PSS returns the PRACK that 183 message (183 message in the step 104) are responded when Calling Side sends SDP B1 to one number service AS;

107-108: after terminating S-CSCF and one number service AS receive PRACK, return 200 message that PRACK is responded to one number service AS and called PSS respectively;

109: after called PSS receives the resource available notification of Calling Side transmission, send the UPDATE request to one number service AS, notify first called subscriber's Calling Side resource available, carry SDP A1 with Calling Side reserved resource notice callee side in the UPDATE request, SDP A1 is that Calling Side sends to called PSS's by the resource available notification;

110: after one number service AS receives the UPDATE request, the UPDATE request is transmitted to terminating S-CSCF;

111: terminating S-CSCF sends UPDATE request responding 200 message to one number service AS, and carry the Answer of SDP B2 as SDP A1 in 200 message after receiving the UPDATE request;

112: after one number service AS receives 200 message, 200 forwards are given the response of the UPDATE request of called PSS as its transmission (the UPDATE request in the step 109), after called PSS receives 200 message, the media information SDP B2 that carries in 200 message is sent to the calling party, thereby finish the calling subscriber and first called subscriber's SDP media negotiation;

113: after finishing the calling subscriber and first called subscriber's media negotiation, one number service AS structure is different from the false SDP (SDP Fake) of SDP A, and, in the INVITE request, carry SDP Fake to other one number service resonance number of terminating S-CSCF transmission INVITE request call;

114: after terminating S-CSCF receives the INVITE request, use the SDP Fake that carries in the INVITE request to call out other one number service resonance number, simultaneously, terminating S-CSCF sends 183 message to one number service AS, other one number service resonance number of notice one number service AS is supported precondition and Early-session, carries the conversation media information SDP B3 and the early-media information Early of the one number service resonance number of being called out in 183 message;

115: after one number service AS receives 183 message, return the PRACK that responds 183, in PRACK, carry the Early Session medium that Early:Inactive notice terminating S-CSCF shields called one number service number to terminating S-CSCF;

116: after terminating S-CSCF receives PRACK, return 200 message that PRACK is responded to one number service AS;

117: during the called resonance number ring of one of them of calling out when terminating S-CSCF, the terminal of ring sends 180 message to terminating S-CSCF, after terminating S-CSCF receives 180 message, transmit 180 message to one number service AS, one number service AS returns PRACK to 180 message responses to terminating S-CSCF, and terminating S-CSCF returns 200 message to the PRACK response to one number service AS;

118: after one number service AS receives 180 message, give called PSS with 180 forwards, after called PSS receives 180 message, 180 message are sent to Calling Side, after caller PSS receives 180 message, to calling subscriber's playing RBT, called PSS returns PRACK to 180 message responses to one number service AS simultaneously, and one number service AS sends 200 message to the PRACK response to called PSS;

119: when some called resonance numbers were replied, the terminal of replying sent 200 message to terminating S-CSCF, after terminating S-CSCF receives 200 message, gave one number service AS with 200 forwards;

120: after one number service AS receives 200 message, send the ACK acknowledge message that the resonance number of replying is confirmed to terminating S-CSCF;

121: if the resonance number of replying is not first called subscriber, then one number service AS to terminating S-CSCF send to the resonance number user who replys call out not with the Re-INVITE request of media information;

If to send to the session number of INVITE request of terminating S-CSCF identical for one number service AS in the session number of 200 message that one number service AS receives in step 119 and the step 102, then the explanation resonance number of replying is first called subscriber, otherwise, be not.

Because the medium of Session are consulted between the calling subscriber and first called subscriber, therefore, if the resonance number of replying is not first called subscriber, then need carry out media negotiation between calling subscriber and the resonance of replying number.

122: after terminating S-CSCF receives the Re-INVITE request, the Re-INVITE request is transmitted to the resonance number of replying, because the resonance number of replying has been in talking state, after receiving the Re-INVITE request of not being with SDP, the media information SDP B4 of himself is sent to terminating S-CSCF by 200 message, and 200 forwards that terminating S-CSCF will receive are given one number service AS;

123: after one number service AS receives 200 message, send the UPDATE request, in the UPDATE request, carry the media information SDP B4 of the resonance number of replying to called PSS;

124: after called PSS receives the UPDATE request, send SDP B4 to Calling Side, Calling Side is according to SDP B4 reserved resource, and to the media information SDP A2 of called PSS echo reply SDP B4, called PSS returns 200 message that request responds to UPDATE to one number service AS, carries the SDP A2 that Calling Side returns in 200 message;

125: after one number service AS receives 200 message, return the ACK acknowledge message, in the ACK acknowledge message, carry SDP A2 to terminating S-CSCF;

126: after called PSS receives the resource available notification of Calling Side transmission, send the UPDATE request to one number service AS, the resonance number Calling Side resource that notice is replied is available, carry SDP A3 with Calling Side reserved resource notice callee side in the UPDATE request, SDP A3 is that Calling Side sends to called PSS's by the resource available notification;

127: after one number service AS receives the UPDATE request, send the Re-INVITE request to terminating S-CSCF, the resonance number caller resource that notice is replied satisfies, and carries SDPA3 in the Re-INVITE request;

128: terminating S-CSCF returns 200 message that Re-INVITE is responded to one number service AS after receiving the Re-INVITE request, carries the SDPB5 that SDP A3 is carried out Answer in 200 message;

129: after one number service AS receives 200 message, send 200 message that UDPATE request (the UDPATE request in the step 126) is responded to called PSS, in 200 message, carry SDPB5, after called PCC receives 200 message, 200 message are sent to Calling Side, and media negotiation is finished;

130: one number service AS returns the ACK acknowledge message of INVITE being asked (the INVITE temperament and interest in the step 102) to terminating S-CSCF;

131: one number service AS sends 200 message that INVITE request (the INVITE request in the step 101) is replied to called PSS;

132: after called PSS receives 200 message, return the ACK acknowledge message to one number service AS;

133: after one number service AS receives the ACK acknowledge message, send CANCEL, cancel the calling that other is continuing, finish to terminating S-CSCF.

If the resonance number of replying is first called subscriber, then the calling subscriber directly converses with first called subscriber, finishes

Application server of the present invention comprises: paging unit and media negotiation unit, and paging unit is used for the receipt of call request, and notice media negotiation unit carries out media negotiation after receiving call request; After the media negotiation that receives the transmission of media negotiation unit is successfully notified, other resonance number that the one number service user contracts is called out;

The media negotiation unit is used for after the notice of carrying out media negotiation that receives the paging unit transmission, one of them resonance number of contracting with one number service resonance user carries out media negotiation, when carrying out media negotiation, use calling subscriber's medium and one number service resonance number to carry out media negotiation, if the media negotiation success then sends media negotiation to paging unit and successfully notifies; If media negotiation failure then selects another one resonance number to carry out media negotiation, after calling subscriber and the success of some resonance number media negotiations, then send media negotiation and successfully notify to paging unit.

Certainly; the present invention can also have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.