CN107548111A - Conversation processing method, apparatus and system - Google Patents
Conversation processing method, apparatus and system Download PDFInfo
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- CN107548111A CN107548111A CN201610496767.7A CN201610496767A CN107548111A CN 107548111 A CN107548111 A CN 107548111A CN 201610496767 A CN201610496767 A CN 201610496767A CN 107548111 A CN107548111 A CN 107548111A
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Abstract
The present invention discloses a kind of conversation processing method, apparatus and system；Method includes：Receive the renewal media request that service call conversation control function S CSCF corresponding with second user equipment is sent, when the switching it is determined that the first user equipment is conversating, generation renewal medium response, renewal medium response is sent to S CSCF, wherein, the first user equipment is the equipment that multimedia session is carried out with second user equipment.Using the embodiment of the present invention, handover success rate of the user equipment from packet-switched domain to circuit commutative field can be improved, realizes the continuity of session.
Description
Technical field
The present invention relates to the voice processing technology of communication technical field, more particularly to a kind of conversation processing method, device and
System.
Background technology
Long Term Evolution (LTE, Long Term Evolution) network initial stage, when LTE is not reaching to whole network covering, with
The movement of user, ongoing voice or video traffic can face the wherein side user to be conversed and remove LTE network
The problem of can voice continuous after coverage.To solve this problem, third generation partner program (3GPP, The 3rd
Generation Partnership Project) introduced in the R8 stages single wireless voice calling continuity (SRVCC,
Single Radio Voice Call Continuity)/enhancing single wireless voice calling continuity (eSRVCC,
Enhanced Single Radio Voice Call Continuity) scheme：It is more in IP due to needing in SRVCC schemes
New bearer is created in media subsystem (IMS, IP Multimedia Subsystem) network, it is easy to causes to grow tall during switching
In 300ms, end-user experience is influenceed；And eSRVCC schemes resides in reduced switching duration relative to the enhancing of SRVCC schemes
(switching duration is less than 300ms), user is set to obtain preferably call experience.
Speech business (VoLTE, the Voice over based on LTE for carrying out video calling in LTE network
LTE) user A and user B, when user A will leave LTE network, it may occur that packet switch (PS, Packet Switch) domain
To the network switching in circuit switching (CS, Circuit Switched) domain, because CS networks do not support video calling or user
Video call service is not opened in CS networks, in switching, business coherence and continuity application server (SCC AS,
Business consistency and continuity of the application server) need regarding user B
Frequency media port is closed, but voice continues to keep.Existing video call eSRVCC switching flows, referring to Fig. 1, bag
Include：
Step 101：User A and user B carry out video calling in LTE network coverage.
Step 102：User A removes LTE coverages, user A triggering PS to CS switchings.
Step 103：Enhanced mobile switching centre (eMSC, Enhanced Mobile Switching Center) is to connecing
Enter switching control function (ATCF, Access Transfer Control Functionality) transmission session initiation protocol to invite
Please (SIP INVITE, Session Initiation Protocol Invite), wherein, SIP INVITE include：ATCF's
Single wireless session switches number (STN-SR, Session Transfer Number Single-Radio) and user A association
Subscriber Number (C-MSISDN, Correlation Mobile Subscriber International ISDN/PSTN
number)；Wherein, association user number is protocol addressed information (PAI, Protocol Addressing Information).
Step 104-105：After the call leg (Call leg) of ATCF renewal user A sides, the SIP of switching is sent
INVITE to SCC AS, request row include access switching more new session switching mark (ATU-STI, Access Transfer
Update-Session Transfer Identifier)。
Step 106-107：SCC AS have found that to be switched calling has video media, then need to send session initiation protocol again
It is user B sides to invite (SIP reINVITE, Session Initiation Protocol reInvite) request renewal opposite end
Media, close video media port.
Step 108-109：Opposite end returns to session initiation protocol and re-invites successfully confirmation response (SIP reINVITE
200OK), carry response session and describe agreement (answer SDP, answer Session Description
Protocol)。
Step 110-111：SCC AS construction SIP 200ACK are returned, and route to opposite end.
Step 112-113：The session initiation protocol of SCC AS construction switchings, which re-invites, successfully (SIP INVITE 200) to be rung
ATCF should be given.
Step 114-115：The responses of SIP INVITE 200 of the switching are transmitted to eMSC by ATCF.
Step 116-117：EMSC construction session initiation protocols, which are invited, successfully confirms response (SIP INVITE 200ACK) hair
ATCF is given, ATCF routes to SCC AS.
So far, handoff procedure is completed, and after switching, video is closed, and voice continues.
But during user A switches, if user B is moved to LTE network signal weak position, user B will or
Person has begun to switch, in above-mentioned step 107, SIP reINVITE requests can not incoming terminal user B, or
Terminal user B is reached, but terminal user B SIP reINVITE 200 responses can not reach ATCF, ATCF wait-for-responses
After time-out, ATCF can give CSCF (S-CSCF, Serving-Call Session Control Function)
Reply session initiation protocol and re-invite time-out (SIP reINVITE 408, Session Initiation Protocol
ReInvite Request Timeout) response, according to the description of SIP interface protocol, if user account control (UAC,
User Account Control) it have received SIP reINVITE 408 and respond or without any response, then will dialogue release.
It is divided to two kinds of abnormal scenes that the process that calling is released is described in detail below, wherein, during user A switches,
EMSC where user B initiates SIP INVITE handover requests, specific as follows：
Abnormal scene 1, referring to Fig. 2, the ATCF where user B first receives eMSC switching, then receives service call session
The SIP reINVITE requests that control function (S-CSCF, Serving-Call Session Control Function) is sent：
Step 201：User A and user B is based on carrying out video calling in LTE network.
Step 202：User B triggering PS to CS switchings.
Step 203：EMSC sends handover request to ATCF, and request row contains ATCF STNSR, and PAI is user B C-
MSISDN。
Step 204-205：After ATCF have updated the Call leg of user B sides, SIP INVITE to the SCC of switching are sent
AS, request row include ATU-STI.
Step 206-207：Because peer user A is first switched, the SCC AS where user A, which are sent, closes video matchmaker
The SIP reINVITE of body come, because user B does not complete whole handoff procedure, so the SIP reINVITE are sent to
Former PS sessions.
Step 208-209：After ATCF receives SIP reINVITE, user B is forwarded to, but the LTE network where user B
It is weaker, have been switched in CS networks, so this SIP reINVITE can not reach user's B terminals.
Step 210：ATCF waits SIP reINVITE time-out, and replying SIP reINVITE 408 to S-CSCF responds；
Step 211-213：According to description of the rfc3261 agreements to the scene, start releasing session, opposite end receives this
Also begin to discharge during SIP reINVITE 408, so user B, when switching is not completed also, whole calling is just discharged extremely
.
Abnormal scene 2, referring to Fig. 3, ATCF first receives S-CSCF SIP reINVITE, then receives eMSC SIP
INVITE handover requests：
Step 301：User B and user A carry out video calling in the lte networks.
Step 302-304：Because user A is switched, the SCC AS where user A, which are sent, closes video media
SIP reINVITE requests are forwarded to user B by SIP reINVITE, ATCF.
Step 305：EMSC sends handover request SIP INVITE and contains ATCF STNSR, PAI to ATCF, request row
For user B C-MSISDN.
Step 306-307：After the Call leg of ATCF renewal user B sides, SIP INVITE to the SCC AS of switching are sent,
Request row includes ATU-STI.
Step 308-309：Because the LTE network residing for user B is weaker, ATCF never has the sound for receiving reINVITE
Should, and retransmitting always, work as retransmission time out, SIP reINVITE408 responses are replied to S-CSCF.
Step 310-312：S-CSCF is discharged extremely according to agreement releasing session, whole calling.
Therefore, prior art is carried out during user A switches to circuit commutative field from packet-switched domain, with user A
The user B of multimedia session is initiated in the scene of handover request, and user A can not be completed from packet-switched domain to circuit commutative field
Switching, thus, the session between user A and user B may be released, and result in the interruption of voice call.
The content of the invention
To solve existing technical problem, the embodiment of the present invention provides a kind of conversation processing method, apparatus and system,
Handover success rate of the user equipment from packet-switched domain to circuit commutative field can be improved, realizes the continuity of session.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
In a first aspect, the embodiment of the present invention provides a kind of conversation processing method, method includes：
The more new media that service call conversation control function S-CSCF corresponding with second user equipment is sent is received to ask
Ask；
When the switching it is determined that the first user equipment is conversating, generation renewal medium response；Wherein, described first use
Family equipment is the equipment that multimedia session is carried out with the second user equipment；
The renewal medium response is sent to the S-CSCF.
In such scheme, it is described receive renewal media request that S-CSCF corresponding with second user equipment send it
Afterwards, methods described also includes：
The renewal media request is forwarded to first user equipment.
It is described when the switching it is determined that first user equipment is conversating in such scheme, generation renewal matchmaker
Body responds, including：
Described set not receiving renewal medium response that first user equipment sends and receiving with the first user
During the handover request that standby corresponding enhanced mobile switching centre eMSC is sent, generation renewal medium response.
Second aspect, the embodiment of the present invention additionally provide a kind of conversation processing method, and methods described includes：
Service call conversation control function S-CSCF corresponding to second user equipment is sent out to access switching control function ATCF
Send renewal media request；
The ATCF receives the renewal media request；
The ATCF is when the switching it is determined that the first user equipment is conversating, generation renewal medium response；Wherein, institute
It is the equipment that multimedia session is carried out with the second user equipment to state the first user equipment；
The ATCF sends the renewal medium response to the S-CSCF；
The S-CSCF receives the renewal medium response.
In such scheme, after the ATCF receives the renewal media request, methods described also includes：
The ATCF forwards the renewal media request to first user equipment.
In such scheme, for the ATCF when the switching it is determined that first user equipment is conversating, generation is more
New media responds, including：
The ATCF is not receiving renewal medium response that first user equipment sends and received and described the
During the handover request that eMSC corresponding to one user equipment is sent, generation renewal medium response.
The third aspect, the embodiments of the invention provide a kind of Dialog processing device, the Dialog processing device includes：
Receiving module, sent for receiving service call conversation control function S-CSCF corresponding with second user equipment
Renewal media request；
Respond module, for when the switching it is determined that the first user equipment is conversating, generation to update medium response；Its
In, first user equipment is the equipment that multimedia session is carried out with the second user equipment；
Sending module, for sending the renewal medium response to the S-CSCF.
In such scheme, the Dialog processing device also includes：
Forwarding module, for receiving the renewal of S-CSCF transmissions corresponding with second user equipment in the receiving module
After media request, the renewal media request is forwarded to first user equipment.
In such scheme, the respond module, it is specifically used for：
Described set not receiving renewal medium response that first user equipment sends and receiving with the first user
During the handover request that standby corresponding enhanced mobile switching centre eMSC is sent, generation renewal medium response.
Fourth aspect, the embodiments of the invention provide a kind of session processing system, the session processing system includes：
Service call conversation control function S-CSCF corresponding to second user equipment, for access switching control function
ATCF sends renewal media request；
The ATCF, for receiving the renewal media request；
The ATCF, it is additionally operable to, when the switching it is determined that first user equipment is conversating, generate more new media
Response；The renewal medium response is sent to the S-CSCF；Wherein, first user equipment is to be set with the second user
The standby equipment for carrying out multimedia session；
The S-CSCF, it is additionally operable to receive the renewal medium response that the ATCF is sent.
In such scheme, the ATCF is additionally operable to：After the renewal media request is received, used to described first
Media request is updated described in the device forwards of family.
In such scheme, the ATCF is specifically used for：The renewal matchmaker of the first user equipment transmission is not being received
Body responds and received the handover request that enhanced mobile switching centre eMSC corresponding with first user equipment is sent
When, generation renewal medium response.
In the embodiment of the present invention, during the first user equipment and second user equipment carry out multimedia session, lead to
Cross and receive the renewal media request that S-CSCF corresponding with second user equipment is sent, when it is determined that the first user equipment is entering
During guild's words switching, generation renewal medium response, renewal medium response is sent to S-CSCF, complete media renewal operation, realize
The switching for the voice call that second user equipment provides from the video calling that packet-switched domain provides to circuit commutative field, ensure
The continuity of voice conversation.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the eSRVCC switchings based on video session in the prior art；
Fig. 2 is the schematic flow sheet that the calling based on abnormal scene 1 in the prior art is released；
Fig. 3 is the schematic flow sheet that the calling based on abnormal scene 2 in the prior art is released；
Fig. 4 is a kind of optional schematic flow sheet 1 of conversation processing method in the embodiment of the present invention；
Fig. 5 is a kind of optional schematic flow sheet 2 of conversation processing method in the embodiment of the present invention；
Fig. 6 is a kind of optional schematic flow sheet 3 of conversation processing method in the embodiment of the present invention；
Fig. 7 is a kind of optional schematic flow sheet 4 of conversation processing method in the embodiment of the present invention；
Fig. 8 is a kind of optional schematic flow sheet 5 of conversation processing method in the embodiment of the present invention；
Fig. 9 is a kind of optional schematic flow sheet 6 of conversation processing method in the embodiment of the present invention；
Figure 10 is a kind of optional structural representation of Dialog processing device in the embodiment of the present invention；
Figure 11 is another optional structural representation of Dialog processing device in the embodiment of the present invention；
Figure 12 is the structural representation of session processing system in the embodiment of the present invention.
Embodiment
In various embodiments of the present invention：The more new media sent by S-CSCF corresponding with second user equipment please
Ask, when the switching it is determined that the first user equipment is conversating, generation renewal medium response, more new media is sent to S-CSCF
Response；Wherein, the first user equipment is the equipment that multimedia session is carried out with second user equipment.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
The embodiments of the invention provide a kind of conversation processing method, can apply to carrying out more matchmakers with the first user equipment
From during packet-switched domain switches to circuit commutative field, the first user equipment is moved to the second user equipment of body call
During the weaker region of LTE signals, cause to be released in scene based on the audio call that IP multimedia subsystem is carried out；It is of the invention real
The executive agent for applying conversation processing method in example can be Dialog processing device, Dialog processing device can using following manner come
Implement, such as：Implement the component of Dialog processing device in ATCF or SCC AS, can also be coupled in ATCF or SCC AS sides
Mode implement the component of Dialog processing device.
Fig. 4 is a kind of optional schematic flow sheet 1 of conversation processing method in the embodiment of the present invention；As shown in figure 4, session
Processing method includes：
Step 401：Receive the renewal media request that S-CSCF corresponding with second user equipment is sent.
In the embodiment of the present invention, the first user equipment and second user equipment are to carry out the two of multimedia session mutually
Individual user equipment；The executive agent of the embodiment of the present invention can be ATCF or SCC AS；In practice, ATCF is specifically as follows
ATCF corresponding to one user equipment, SCC AS are specifically as follows SCC AS corresponding to the first user equipment.
Here, multimedia session can include voice call, video calling, for example, the first user equipment and second user
The multimedia session that equipment is carried out based on LTE network.Updating media request includes SIP reINVITE requests and UPDATE requests,
The embodiment of the present invention is not specific to this to be limited；SCC AS corresponding with second user equipment detects that second user equipment is initiated
When having video media in the call business of handover request, SCC AS send SIP reINVITE requests, SIP to S-CSCF
ReINVITE asks the media for indicating the first user equipment of renewal, by the voice bearer in the first user equipment call business
Switch over, that is to say, that S-CSCF is used to close by the way that the SIP received reINVITE requests are transmitted into the first user equipment
The non-voice carrying closed in the first user equipment call business；Wherein, handover request be used for indicate by second user equipment from point
Group switching domain switches to the SIP INVITE of circuit commutative field to ask.
Step 402：When the switching it is determined that the first user equipment is conversating, generation renewal medium response.
Here, determine the first user equipment conversating switching feasible implementation can be divided into it is following two
Situation：
1st, after ATCF receives eMSC transmissions session handover request corresponding with the first user equipment, receive and second uses
The renewal media request that S-CSCF corresponding to the equipment of family is sent；
2nd, after ATCF receives the renewal media request that S-CSCF corresponding with second user equipment is sent, receive and the
The session handover request that eMSC corresponding to one user equipment is sent, the embodiment of the present invention is not specific to this to be limited.
Generation renewal medium response can generate in the case where meeting following condition：
Condition 1：After ATCF receives the handover request that eMSC corresponding with the first user equipment is sent, ATCF determines to receive
The renewal media request sent to S-CSCF corresponding with second user equipment, no longer will S- corresponding with second user equipment
The renewal media request that CSCF is sent is sent to the first user equipment, but is immediately generated renewal medium response, and by generation
Renewal medium response sends to S-CSCF, ATCF and receives the SIP reINVITE ACK that S-CSCF is returned, and completes media renewal behaviour
Make.
Condition 2：After ATCF receives the renewal media request that S-CSCF corresponding with second user equipment is sent, ATCF connects
The handover request that eMSC corresponding with the first user equipment is sent is received, is no longer waiting for the more new media of the first user equipment transmission
Response, but renewal medium response is immediately generated, and the renewal medium response of generation is sent to S-CSCF, ATCF and receives S-
The SIP reINVITE ACK that CSCF is returned, complete media renewal operation.
Step 403：Renewal medium response is sent to S-CSCF.
Here, after ATCF sends renewal medium response to S-CSCF, in addition to：ATCF receives S-CSCF and returns to SIP
ReINVITE ACK terminate this session handover request affairs, continue to complete the first user equipment and are handed over from packet-switched domain to circuit
Change the switching in domain.
The renewal media request that the embodiment of the present invention is sent by receiving S-CSCF corresponding with second user equipment, when
It is determined that with second user equipment carry out multimedia session the first user equipment conversating switching when, generate more new media
Response, renewal medium response is sent to S-CSCF, complete media renewal operation, realize second user equipment from packet-switched domain
To the switching of circuit commutative field, avoid the first user equipment and the voice conversation of second user equipment is released, ensure that
One user equipment and the continuity of speech business of the second user equipment based on LTE.
On the basis of above-described embodiment, the embodiment of the present invention can apply to wish to avoid to carry out with the first user equipment more
The second user equipment of media call from packet-switched domain switch to circuit commutative field during, the first user equipment is moved to
During the weaker region of LTE signals, the voice conversation of the first user equipment and second user equipment based on LTE is released, and ensures language
In the successional scene of sound calling.
On the opportunity of above-mentioned generation renewal medium response, can be any one following implementation：
Mode 1, ATCF receive the renewal media request that S-CSCF corresponding with second user equipment is sent, and ATCF is to the
One user equipment forwarding renewal media request；ATCF is not receiving the renewal medium response of the first user equipment transmission and connect
Generation renewal medium response when receiving the handover request that eMSC corresponding with the first user equipment is sent.
After mode 2, ATCF receive the handover request that eMSC corresponding with the first user equipment is sent, ATCF receive with
Generation renewal medium response during the renewal media request that S-CSCF corresponding to second user equipment is sent.
Mode 3, SCC AS receive the renewal media request that S-CSCF corresponding with second user equipment is sent；SCC AS
Renewal media request is forwarded to the first user equipment, SCC AS ring in the more new media for not receiving the transmission of the first user equipment
Generation renewal medium response when the handover request that ATCF corresponding with the first user equipment is sent and should be received.
After mode 4, SCC AS receive the handover request that ATCF corresponding with the first user equipment is sent, SCC AS are received
To S-CSCF corresponding with second user equipment send renewal media request when generation renewal medium response.
Fig. 5 is a kind of optional schematic flow sheet 2 of conversation processing method in the embodiment of the present invention；This method includes：
Step 501：S-CSCF corresponding to second user equipment sends renewal media request to ATCF.
It is corresponding with second user equipment during first user equipment carries out multimedia session with second user equipment
SCC AS send renewal media request, such as SIP reINVITE requests to S-CSCF；S-CSCF to the first user equipment pair
Answer ATCF forwarding renewal media requests.
Step 502：After ATCF receives renewal media request, when the switching it is determined that the first user equipment is conversating,
Generation renewal medium response.
For example, after ATCF receives S-CSCF transmissions renewal media request corresponding with second user equipment, it is determined that receiving
The handover request sent to eMSC corresponding with the first user equipment, judge to whether there is the first user equipment not in former PS sessions
The request transaction of response is returned, when judging to exist the request transaction for not returning to response, ATCF generation renewal medium responses；Wherein,
Request transaction includes SIP reINVITE requests and UPDATE requests.
Step 503：ATCF sends renewal medium response to S-CSCF.
Step 504：S-CSCF receives renewal medium response.
Optionally, after ATCF receives renewal media request, method also includes：ATCF is forwarded more to the first user equipment
New media is asked.
On the basis of such scheme, ATCF is when the switching it is determined that the first user equipment is conversating, generation renewal
Medium response, including：ATCF is not receiving the renewal medium response of the first user equipment transmission and received and the first user
During the handover request that eMSC corresponding to equipment is sent, generation renewal medium response.Here ATCF is forwarded more to the first user equipment
After new media request, in fact it could happen that the first user equipment receives/do not received two kinds of feelings of renewal media request of ATCF transmissions
Condition, in the embodiment of the present invention by taking the renewal media request that the first user equipment receives ATCF transmissions as an example.The embodiment of the present invention
In, when ATCF receives the renewal media request that S-CSCF corresponding with second user equipment is sent, when it is determined that the first user sets
It is standby conversate switching when, generation renewal medium response；And renewal medium response is sent to S-CSCF, to complete media
Renewal operation, avoiding may because handover request is initiated during second user equipment switches for the first user equipment
Caused audio call is released, ensure that second user equipment from packet-switched domain be switched to circuit commutative field when audio call
Continuity.
On the basis of above-described embodiment, the embodiment of the present invention can also be applied to avoid that speech business switching occurs
The correspondent user device of user equipment is moved in the weak region of LTE signals, and the transmitting-receiving of packet-switched sessions message goes out active
Or in the scene of delay.
In the embodiment of the present invention, when ATCF corresponding to user B (the first user equipment) receives eMSC handover request, by
In now user B just in the handover, ATCF be sent to user B SIP reINVITE request may be then no longer waiting for without response
Terminal response, but a normal sip response is constructed immediately to S-CSCF, avoid S-CSCF call releases.
The construction of normal sip response can be realized by any one following mode：
Mode 1, it can apply to be based on abnormal scene 1, ATCF constructs normal sip response to S-CSCF, avoids S-
CSCF call releases, complete in the scene that user A (second user equipment) switches to circuit commutative field from packet-switched domain, referring to
Fig. 6：
Step 601：User A and user B is based on carrying out video calling in LTE network.
Step 602：User B triggering PS to CS switchings.
Step 603：EMSC sends handover request to ATCF, and request row contains ATCF STNSR, and PAI is user B C-
MSISDN。
Step 604-605：After ATCF have updated the Call leg of user B sides, SIP INVITE to the SCC of switching are sent
AS, request row include ATU-STI.
Step 606-607：Because peer user A is first switched, the SCC AS where user A, which are sent, closes video matchmaker
The SIP reINVITE of body come, because user B does not complete whole handoff procedure, so the SIP reINVITE are sent to
Former PS sessions are sent to S-CSCF corresponding with user B, S-CSCF former PS sessions being forwarded to ATCF by former PS sessions, user A.
Step 608-609：After ATCF receives the request message (including reINVITE and UPDATE requests) of former PS sessions, sentence
Whether the disconnected user had received eMSC switching, if received, no longer sent the request message of former PS sessions
To terminal, but normal 200 response of oneself construction one, because user B has occurred and that switching, so this SIP of construction
In 200 responses, answer media just recede into the background, and using false media, or replace the IP information structurings one in offer media
Individual answer media, the purpose for constructing the response are the request transactions of former PS sessions of terminating.
Step 610：After S-CSCF receives the ATCF responses of SIP reINVITE 200, SIP reINVITE ACK are replied,
Complete media renewal operation, behind continue user B switching and other flows.
Mode 2, it can apply to be based on abnormal scene 2, ATCF constructs normal sip response to S-CSCF, avoids S-
CSCF call releases, complete in the scene that user A switches to circuit commutative field from packet-switched domain, referring to Fig. 7：
Step 701：Because peer user A is switched, ATCF receives the pass that the SCC AS where peer user A are sent
Close the SIP reINVITE requests of video media.
Step 702-704：SIP reINVITE are forwarded to user B by ATCF.
Step 705-709：Because the LTE network where user B is weaker, ATCF does not receive SIP reINVITE sound
Should, and have received the handover request for the user B that eMSC is sent.After ATCF navigates to be switched PS sessions, increase judges PS
In session, if the request transaction (including reINVITE and UPDATE) for not receiving terminal response also be present, if so, then stopping
Retransmit, construction one normally responds to S-CSCF.
In addition, after the Call leg of ATCF renewal user B sides, handover request is sent to SCC AS.
Step 710：After S-CSCF receives ATCF SIP reINVITE 200, SIP reINVITE ACK are replied, are completed
Media renewal operation, behind continue user B switching and other flows.
Mode 3, it can apply to be based on abnormal scene 2, SCC AS construct normal sip response to S-CSCF, avoid S-
CSCF call releases, complete in the scene that user A switches to circuit commutative field from packet-switched domain, referring to Fig. 8：
Step 801：User A and user B is based on carrying out video calling in LTE network.
Step 802：User B triggering PS to CS switchings.
Step 803：EMSC sends handover request to ATCF, and request row contains ATCF STNSR, and PAI is user B C-
MSISDN。
Step 804-805：After ATCF have updated the Call leg of user B sides, SIP INVITE to the SCC of switching are sent
AS, request row include ATU-STI.
Step 806：Because peer user A is first switched, the SCC AS where user A, which are sent, closes video media
SIP reINVITE come, because user B does not complete whole handoff procedure, so the SIP reINVITE are sent to former PS
Session, user A send former PS sessions to S-CSCF corresponding with user B.
Step 807-809：The step is innovative point of the present invention, SCC AS receive former PS sessions request message (including
ReINVITE and UPDATE requests) after, judge whether the user had received ATCF handover request, if received
Cross, then the request message of former PS sessions be no longer sent to ATCF, but normal 200 response of oneself construction one, due to
Family B has begun to switch, so in this SIP 200 responses of construction, answer media just recede into the background, and use false matchmaker
Body, or one answer media of ip information structurings in offer media are replaced, the purpose for constructing the response is the former PS meetings of termination
The request transaction of words.
Step 810：After S-CSCF receives SCC AS SIP reINVITE 200, SIP reINVITE ACK are replied, it is complete
Update and operate into media, behind continue user B switching and other flows.
Mode 4, it can apply to be based on abnormal scene 2, SCC AS construct normal sip response to S-CSCF, avoid S-
CSCF call releases, complete in the scene that user A switches to circuit commutative field from packet-switched domain, referring to Fig. 9：
Step 901-906：Because peer user A is switched, SCC AS receive the closing video that opposite end sends over
The SIP reINVITE requests of media, reINVITE is routed to S-CSCF by SCC AS, and routes to user B always.
Step 907-909：User B switches, and SCC AS receive ATCF handover request.
Step 910-912：After SCC AS receive ATCF handover request, it is confirmed whether that the request of also former PS sessions does not ring
Should, if so, then stopping retransmitting, construction is normal to respond to opposite end, after ACK is replied in opposite end, terminates this affairs.Continue below
User B switching and other flows.
For the embodiment of the present invention by occurring for user A in session handoff procedure, user B is moved to the weak area of LTE signals
During domain, in fact it could happen that calling release different scenes, generate normal sip response to S-CSCF, complete media renewal operation,
The SIP that user B or ATCF wait user B to send can not be reached by avoiding the SIP reINVITE requests sent by SCC AS
ReINVITE response timeouts and cause calling to be released, complete switchings of the user A from packet-switched domain to circuit commutative field, ensure
The continuity of user A and user B audio call.
The embodiment of the present invention provides a kind of Dialog processing device, and the executive agent of Dialog processing device can be to be used with first
ATCF or SCC AS corresponding to the equipment of family, referring to Figure 10, Dialog processing device 101 provided in an embodiment of the present invention, including：
Receiving module 1001, the renewal media request sent for receiving S-CSCF corresponding with second user equipment；
Respond module 1002, for when the switching it is determined that the first user equipment is conversating, generation more new media to ring
Should；Wherein, shown first user equipment is the equipment that multimedia session is carried out with second user equipment；
Sending module 1003, for sending renewal medium response to S-CSCF.
In the embodiment of the present invention, after receiving the renewal media request that S-CSCF corresponding with second user equipment is sent,
When the switching it is determined that the first user equipment is conversating, generation renewal medium response, and send more new media to S-CSCF
Response, media renewal operation is completed, is released so as to avoid the audio call of the first user equipment and second user equipment, such as
This, ensure that the continuity of audio call.
On the basis of above-described embodiment, referring to the Dialog processing device 102 shown in Figure 11, Dialog processing device 102 with
Based on Dialog processing device 101；Dialog processing device 102 also includes receiving module 1001, sound in Dialog processing device 101
Module 1002, sending module 1003 are answered, further, Dialog processing device 102 also includes：
Forwarding module 1004, for forwarding renewal media request to the first user equipment.
On the basis of above-described embodiment, forwarding module 1004, it is specifically used for：Sent not receiving the first user equipment
Renewal medium response and when receiving the handover request that eMSC corresponding with the first user equipment is sent, generate more new media
Response.
In actual applications, receiving module 1001, respond module 1002, sending module 1003, forwarding module 1004
By the central processing unit (CPU) positioned at Dialog processing device, microprocessor (MPU), digital signal processor (DSP) or scene
Programmable gate array (FPGA) etc. is realized.
To realize above-mentioned conversation processing method, as shown in figure 12, the embodiment of the present invention additionally provides a kind of Dialog processing system
System, session processing system include：
S-CSCF 1202 corresponding to second user equipment, for sending renewal media request to ATCF 1201；
ATCF 1201, update media request for receiving；
ATCF 1201, it is additionally operable to when the switching it is determined that the first user equipment is conversating, generation more new media rings
Should；Renewal medium response is sent to S-CSCF 1202；Wherein, the first user equipment is to carry out multimedia with second user equipment
The equipment of call；
S-CSCF 1202, it is additionally operable to receive the renewal medium response that ATCF 1201 is sent.
On the basis of above-described embodiment, ATCF 1201 is additionally operable to：After renewal media request is received, to first
User equipment forwarding renewal media request.
On the basis of above-described embodiment, ATCF 1201 is specifically used for：Sent more not receiving the first user equipment
When new media responds and received the handover request that eMSC corresponding with the first user equipment is sent, generation renewal medium response.
The present embodiment records a kind of computer-readable medium, can be ROM (for example, read-only storage, FLASH memory,
Transfer device etc.), magnetic storage medium (for example, tape, disc driver etc.), optical storage medium is (for example, CD-ROM, DVD-
ROM, paper card, paper tape etc.) and other well-known types program storage；Computer is stored with computer-readable medium to be held
Row instruction, when executing an instruction, causes at least one computing device to include following operation：
Receive the renewal media request that S-CSCF corresponding with second user equipment is sent；
When the switching it is determined that the first user equipment is conversating, generation renewal medium response；Wherein, the first user sets
Standby is the equipment that multimedia session is carried out with second user equipment；
Renewal medium response is sent to S-CSCF.
To sum up, the embodiment of the present invention is asked by receiving the more new media that S-CSCF corresponding with second user equipment is sent
Ask, when the switching it is determined that the first user equipment is conversating, generation renewal medium response, wherein, the first user equipment is
The equipment that multimedia session is carried out with second user equipment, renewal medium response is sent to S-CSCF, complete media renewal behaviour
Make, realize cutting for the voice call that second user equipment provides from the video calling that packet-switched domain provides to circuit commutative field
Change, ensure that voice conversation continuity.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the shape of the embodiment in terms of the present invention can use hardware embodiment, software implementation or combination software and hardware
Formula.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more to use storage
The form for the computer program product that medium is implemented on (including but is not limited to magnetic disk storage and optical memory etc.).
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (12)
1. a kind of conversation processing method, it is characterised in that methods described includes：
Receive the renewal media request that service call conversation control function S-CSCF corresponding with second user equipment is sent；
When the switching it is determined that the first user equipment is conversating, generation renewal medium response；Wherein, first user sets
Standby is the equipment that multimedia session is carried out with the second user equipment；
The renewal medium response is sent to the S-CSCF.
2. according to the method for claim 1, it is characterised in that described to receive service corresponding with second user equipment and exhale
After being the renewal media request that conversation control function S-CSCF is sent, methods described also includes：
The renewal media request is forwarded to first user equipment.
3. according to the method for claim 2, it is characterised in that described to be cut when the first user equipment of determination conversates
When changing, generation renewal medium response, including：
The renewal medium response of the first user equipment transmission is not being received and is being received and first user equipment pair
During the handover request that the enhanced mobile switching centre eMSC answered is sent, generation renewal medium response.
4. a kind of conversation processing method, it is characterised in that methods described includes：
Service call conversation control function S-CSCF corresponding to second user equipment is sent more to access switching control function ATCF
New media is asked；
The ATCF receives the renewal media request；
The ATCF is when the switching it is determined that the first user equipment is conversating, generation renewal medium response；Wherein, described
One user equipment is the equipment that multimedia session is carried out with the second user equipment；
The ATCF sends the renewal medium response to the S-CSCF；
The S-CSCF receives the renewal medium response.
5. according to the method for claim 4, it is characterised in that after the ATCF receives the renewal media request,
Methods described also includes：
The ATCF forwards the renewal media request to first user equipment.
6. according to the method for claim 5, it is characterised in that the ATCF enters guild when the first user equipment of determination
During words switching, generation renewal medium response, including：
The ATCF is not receiving renewal medium response that first user equipment sends and received and described first uses
During the handover request that enhanced mobile switching centre eMSC corresponding to the equipment of family is sent, generation renewal medium response.
7. a kind of Dialog processing device, it is characterised in that the Dialog processing device includes：
Receiving module, sent more for receiving service call conversation control function S-CSCF corresponding with second user equipment
New media is asked；
Respond module, for when the switching it is determined that the first user equipment is conversating, generation to update medium response；Wherein,
First user equipment is the equipment that multimedia session is carried out with the second user equipment；
Sending module, for sending the renewal medium response to the S-CSCF.
8. Dialog processing device according to claim 7, it is characterised in that the Dialog processing device also includes：
Forwarding module, for receiving the more new media of S-CSCF transmissions corresponding with second user equipment in the receiving module
After request, the renewal media request is forwarded to first user equipment.
9. Dialog processing device according to claim 8, it is characterised in that the respond module, be specifically used for：Do not connecing
Receive the renewal medium response that first user equipment is sent and receive corresponding enhanced with first user equipment
During the handover request that mobile switching centre eMSC is sent, generation renewal medium response.
10. a kind of session processing system, it is characterised in that the session processing system includes：
Service call conversation control function S-CSCF corresponding to second user equipment, for being sent out to access switching control function ATCF
Send renewal media request；
The ATCF, for receiving the renewal media request；
The ATCF, it is additionally operable to when the switching it is determined that first user equipment is conversating, generation renewal medium response；
The renewal medium response is sent to the S-CSCF；Wherein, first user equipment is to enter with the second user equipment
The equipment of row multimedia session；
The S-CSCF, it is additionally operable to receive the renewal medium response that the ATCF is sent.
11. session processing system according to claim 10, it is characterised in that the ATCF is additionally operable to：Receiving
After stating renewal media request, the renewal media request is forwarded to first user equipment.
12. session processing system according to claim 11, it is characterised in that the ATCF is specifically used for：Do not receiving
To first user equipment send renewal medium response and receive enhanced shifting corresponding with first user equipment
During the handover request that dynamic switching centre eMSC is sent, generation renewal medium response.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610496767.7A CN107548111A (en) | 2016-06-28 | 2016-06-28 | Conversation processing method, apparatus and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610496767.7A CN107548111A (en) | 2016-06-28 | 2016-06-28 | Conversation processing method, apparatus and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351899A (en) * | 2018-04-02 | 2019-10-18 | 华为技术有限公司 | Discharge the method and apparatus of user plane functions network element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547143A (en) * | 2008-03-28 | 2009-09-30 | 华为技术有限公司 | Method, system and device for switching streaming media service |
| CN102761915A (en) * | 2011-04-29 | 2012-10-31 | 中兴通讯股份有限公司 | Processing method and AS for session switching on calling side |
| WO2015139298A1 (en) * | 2014-03-21 | 2015-09-24 | Qualcomm Incorporated | Security mode updates during cellular relocation to avoid call drop |
-
2016
- 2016-06-28 CN CN201610496767.7A patent/CN107548111A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547143A (en) * | 2008-03-28 | 2009-09-30 | 华为技术有限公司 | Method, system and device for switching streaming media service |
| CN102761915A (en) * | 2011-04-29 | 2012-10-31 | 中兴通讯股份有限公司 | Processing method and AS for session switching on calling side |
| WO2015139298A1 (en) * | 2014-03-21 | 2015-09-24 | Qualcomm Incorporated | Security mode updates during cellular relocation to avoid call drop |
Non-Patent Citations (1)
| Title |
|---|
| 3GPP: "Application level handover", 《3GPP TSG CT WG1 MEETING #54 C1-082454》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351899A (en) * | 2018-04-02 | 2019-10-18 | 华为技术有限公司 | Discharge the method and apparatus of user plane functions network element |
| CN110351899B (en) * | 2018-04-02 | 2021-07-16 | 华为技术有限公司 | Method and equipment for releasing user plane function network element |
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