CN1870772A - Optimization method of load supporting path - Google Patents
Optimization method of load supporting path Download PDFInfo
- Publication number
- CN1870772A CN1870772A CNA2005101129260A CN200510112926A CN1870772A CN 1870772 A CN1870772 A CN 1870772A CN A2005101129260 A CNA2005101129260 A CN A2005101129260A CN 200510112926 A CN200510112926 A CN 200510112926A CN 1870772 A CN1870772 A CN 1870772A
- Authority
- CN
- China
- Prior art keywords
- media gateway
- calling
- soft switch
- callee
- message
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
This invention disacloses a method for optimizing load path including: when a load path of two-way user data is set up, a mobile soft switch judges if the data code formats of the load ends at both sides of the media gateway in the path are the same, if so, the gateway is canceled from the load path and the load parameter of the connected end point adjacent to said media gateway is updated, which can avoid unnecessary gateways to reduce the network load effectively.
Description
Technical field
The present invention relates to moving communicating field, refer to a kind of optimization method of load supporting path under the Access Network and core network interface IPization situation under the circuit-domain network carrying control separation architecture especially.
Background technology
Mobile communications network is to complete IP network evolution, at present, introduced the framework that carrying separates with control in circuit-domain network, with CDMA2000 is example, mobile switching centre originally (MSC) is divided into mobile soft switch (MSCe) and two equipment of media gateway (MGW), is respectively applied for signaling control and carrying and handles.In addition, after the A interface IPization, A1p interface signaling and the A2p interface data between BS and the MGW between BS and the MSCe all are carried on the IP network, and the network site of related functional entities and interface annexation are as shown in Figure 1.Among the figure MGW also with public switch telephone network (Public SwitchTelephone Network; PSTN) be connected.According to existing protocol, A2p not only provides the bearer path between BS and the MGW, and the IP bearer path between BS and the BS is also provided by A2p.
Fig. 2 is that example is described existing technical scheme with a typical station to station call flow process, for the purpose of convenient, the A2p bearing parameter of supposing Calling Side BS is at connection management service request (ConnectionManagement Service Request, CM Service Request) passes to Calling Side MSCe in the message, the A2p bearing parameter of callee side BS is passed to callee side MSCe in Paging Response (page response) message, ring-back tone is provided by callee side, has omitted the process with the little mutual called route of same HLR (attaching position register) of relation of the present invention in the message flow.Concrete call setup flow process is as follows:
1, MSCe1 receives the CM Service Request message that BS1 sends, and wherein carries the A2p bearing parameter, mainly comprises the coded format tabulation of BS1 side expectation, the IP address of the last bearer connection endpoint of BS1, port numbers;
2, MSCe1 issues ADD (increase) message to MGW1, and request distributes two RTP (RTP) type end points, the bearer connection endpoint of corresponding BS1 side and callee side respectively;
3, MSCe1 receives REPLY (replying) message that MGW1 returns, and wherein carries SDP (the Session Descriptor Protocol of two good RTP end points of application; Session Description Protocol) information mainly comprises the coded format that MGW1 supports respectively, the IP address of end points separately, port numbers;
4, MSCe1 sends INVITE (request) message to MSCe1, carries the SDP of the RTP end points of the corresponding callee side of MGW1;
5, MSCe1 sends Assignment Request (assignment request) message to BS1 request distribution interface-free resources, carries the A2p bearing parameter of the RTP end points of the corresponding BS1 side of MGW1;
6, after interface-free resources was set up and finished, MSCe1 received Assignment Complete (assignment is finished) message that BS1 sends;
7, find called position after, MSCe2 sends Paging Request (paging request) message to BS2, can carry the coded format tabulation that obtains from Calling Side;
8, MSCe2 receives the Paging Response message that BS2 returns, and wherein carries the A2p parameter of BS2 side, comprises the coded format that the BS2 side joint is subjected to, the IP address of the last bearer connection endpoint of BS2, port numbers;
9, MSCe2 issues ADD message to MGW2, and request distributes two RTP type end points, respectively the bearer connection endpoint of corresponding BS2 side and Calling Side;
10, MSCe2 receives the REPLY message that MGW2 returns, and wherein carries the SDP information of two good RTP end points of application, mainly comprises the coded format that MGW2 supports respectively, the IP address of end points separately, port numbers;
11, MSCe2 sends Assignment Request message to BS2 request distribution interface-free resources, carries the A2p bearing parameter of the RTP end points of the corresponding BS2 side of MGW2;
12, after interface-free resources was set up and finished, MSCe2 received the Assignment Complete message that BS2 sends;
13, MSCe1 receives 180 message that MSCe2 returns, and wherein carries the SDP that MGW2 goes up corresponding Calling Side end points;
14, MSCe2 issues MODIFY (modification) message to MGW2, and request is put ring-back tone to the RTP end points near Calling Side;
15, MSCe2 receives the REPLY message that MGW2 returns;
16, PRACK (Temporary Response affirmation) message of MSCe1 transmission 180 is to MSCe2;
17, MSCe1 receives the 200 OK response of the PRACK message that MSCe2 returns;
18, MSCe1 issues MODIFY message to MGW1, Remote (far-end) SDP of its callee side end points is updated to the SDP of the upward close Calling Side end points of MGW2 that band is come in 180 message;
19, MSCe1 receives the REPLY message that MGW1 returns;
20, MGW2 sets up to calling subscriber's unidirectional ring-back tone data flow;
21, MSCe2 receives Connect (connection) message of BS2, the indication called subscriber answer;
22, MSCe2 issues MODIFY (modification) message to MGW2, and request stops playing RBT to the RTP end points near Calling Side;
23, MSCe2 receives the REPLY message that MGW2 returns;
24, MSCe1 receives the 200 OK response of the INVITE that MSCe2 returns;
25, MSCe1 issues MODIFY message to MGW1, is two-way with the Media Stream attribute modification of callee side end points;
26, MSCe1 receives the REPLY message that MGW1 returns;
27, MSCe1 returns ACK (affirmation) message to MSCe2;
28, bi-directional bearers foundation is finished between the calling and called user;
29, behind the end of conversation, called subscriber's on-hook, MSCe2 receives Clear Request (the removing request) message that BS2 sends;
30, MSCe2 sends Clear Command (clear command) message to BS2;
31, MSCe1 receives BYE (taking out stitches) message that MSCe2 sends;
32, MSCe1 sends Clear Command message to BS1;
33, MSCe1 receives the Clear Complete message that BS1 returns;
34, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
35, MSCe1 issues SUBSTRACT (deletion) message to MGW1, discharges the RTP end points that this calling takies;
36, MSCe1 receives the REPLY message that MGW1 returns;
37, MSCe2 receives the Clear Complete message that BS2 returns;
38, MSCe2 issues SUBSTRACT message to MGW2, discharges the RTP end points that this calling takies;
39, MSCe2 receives the REPLY message that MGW2 returns.
Circuit-domain network carrying at present separate with control and the network architecture of Access Network and core net interface IPization in, MGW the net in except possessing playback, DTMF (Dual Tone Multi-Frequency, dual-tone multifrequency) detection reports, outside the media resource operating functions such as insertion conferencing resource, the another one important function is to carry out the conversion of code/decode format.Can notice, circuit-domain network inside after IPization, MGW is used for the function of code/decode format conversion in reduction gradually, particularly to improve voice quality, reducing the encoding and decoding conversion process is TrFO (the Transcoder Free Operation of purpose, encode/decode-free operation) and the support and the application of RTO (Remote Transcoder Operation, far-end coding-decoding operation) function, more quickened this trend.As shown in Figure 3, TrFO is meant in packet transmission networks inside, if utilize out-of-band signalling to consult to obtain calling out the identical code/decode type in two ends, does not then need to carry out encoding and decoding speech, direct end-to-end transmission compressed voice.RTO is meant under the situation that can not obtain the identical code/decode format in two ends, only carries out encoding and decoding conversion one time.The agreement regulation still can't make two ends coded format coupling after successively having attempted TrFO and RTO, just use two codecs, the two ends form all is converted to general transmission form (as G.711) carries out intercommunication.EVRC among Fig. 3 (Enhanced Variable Rate Code) supposes that for strengthening the variable bit rate code/decode format codec (TC) is present on the MGW.
Can find out from above-mentioned call flow and Fig. 3, in calling procedure, consulted identical coded format (not needing MGW that the TC function is provided) even call out two ends, perhaps use TC just can finish under the situation of code/decode format conversion less than the MGW number, all MGW also are present in the bearer path all the time, and the end points on the MGW can discharge up to calling out when discharging.
The shortcoming of prior art is as follows:
BS has supported the IP interface at present, but in the prior art, use identical coded format (TrFO) even be in the calling two ends of packet transmission networks inside, bearer path still must pass through MGW in the communication process, increased the time-delay of packet, be unfavorable for the raising of voice quality, along with at present increasing operator tends to net the interior Unified coding form that uses, this shortcoming is also more and more obvious.
Most of ordinary call all enters after ring-back tone is put in caller in stable (also may be long) two-way call process, two ends use identical coded format or use the TC number less than by way of the MGW number time, carrying must cause MGW to go up the waste of resource (RTP end points) through unnecessary MGW in whole calling procedure.
When the calling and called of use same-code form were conversed under same BS, carrying caused route circuitous through MGW easily, waste IP transfer resource.
Summary of the invention
The invention provides a kind of optimization method of load supporting path, must pass through each MGW in order to solve the prior art bearer path, use TC number in identical data coded format or the call path to cause that packet postpones, route is made a circulation and the problem of the wasting of resources under less than MGW number situation at calling and called.
The inventive method comprises: the calling subscriber calls out the called subscriber, after setting up the bearer path of this calling, whether the data encoding format of being judged corresponding media gateway both sides bearer connection endpoint in the bearer path by mobile soft switch is identical, if the data encoding format of media gateway both sides bearer connection endpoint is identical, then this media gateway is deleted from described bearer path, and upgrade the bearing parameter of the bearer connection endpoint adjacent with this media gateway.
According to said method of the present invention, described calling is the calling of same intra-exchange, the data encoding format that corresponding media gateway both sides bearer connection endpoint is judged in mobile soft switch is identical, corresponding media gateway is deleted from described bearer path, upgrade the bearing parameter of the bearer connection endpoint of the affiliated base station of calling and called map network side, make between caller and the called affiliated base station and carry direct interconnection.
According to said method of the present invention, described calling is the calling of interexchange without tandem exchange, it is identical that callee side moves the data encoding format that soft switch judges callee side media gateway both sides bearer connection endpoint, Calling Side moves the data encoding format difference that Calling Side media gateway both sides bearer connection endpoint is judged in soft switch, then the callee side media gateway is deleted from bearer path, upgrade called under the bearing parameter of bearer connection endpoint of the bearer connection endpoint of base station map network side and the corresponding callee side of caller media gateway, make and carry direct interconnection between base station and the Calling Side media gateway under called.
According to said method of the present invention, comprise following concrete steps:
A1, callee side move soft switch and move soft switch transmission update inquiry information, the Session Description Protocol SDP information of carrying callee side BS map network side point to Calling Side;
B1, Calling Side move soft switch and move soft switch echo reply message to callee side, carry the SDP information of the corresponding callee side end points of Calling Side media gateway;
C1, callee side move soft switch and send the medium update inquiry information to callee side BS, the bearing parameter after the SDP information of carrying the corresponding callee side end points of Calling Side media gateway transforms;
D1, callee side BS upgrade the opposite end address information of preserving with the described bearing parameter that carries in the described medium update inquiry information;
E1, Calling Side soft switch issue revises MODIFY message to the Calling Side media gateway, the long-range SDP of its corresponding callee side end points is updated to the SDP information of callee side BS map network side point;
F1, callee side move soft switch and send deletion message to the callee side media gateway, and discharging the callee side media gateway is two end points of this call distribution, and the callee side media gateway is deleted from bearer path; Callee side BS map network side point and the corresponding callee side end points of Calling Side media gateway direct interconnection.
According to said method of the present invention, described calling is the calling of interexchange without tandem exchange, callee side moves the data encoding format difference that callee side media gateway both sides bearer connection endpoint is judged in soft switch, it is identical that Calling Side moves the data encoding format that soft switch judges Calling Side media gateway both sides bearer connection endpoint, then the Calling Side media gateway is deleted from bearer path, the bearing parameter of the bearer connection endpoint of the bearer connection endpoint of base station map network side and the corresponding Calling Side of called media gateway under the renewal caller makes between affiliated base station of caller and the callee side media gateway and carries direct interconnection.
According to said method of the present invention, comprise following concrete steps:
A2, Calling Side move soft switch and move soft switch transmission request (re-INVITE) message again, the SDP information of carrying Calling Side BS map network side point to callee side;
B2, callee side move soft switch and judge echo reply message, carry the SDP information of the corresponding Calling Side end points of callee side media gateway;
C2, callee side move soft switch and issue modification MODIFY message to the callee side media gateway, the long-range SDP of the last corresponding Calling Side end points of this MGW are updated to the SDP information of Calling Side BS map network side point;
D2, Calling Side move soft switch and send the medium update inquiry information to Calling Side BS, the bearing parameter after the SDP information of carrying the corresponding Calling Side end points of callee side media gateway transforms;
E2, Calling Side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with Calling Side;
F2, Calling Side move soft switch and send deletion message to the Calling Side media gateway, and discharging on the Calling Side media gateway is two end points of this call distribution, and the Calling Side media gateway is deleted from bearer path; Calling Side BS map network side point and the corresponding Calling Side end points of callee side media gateway direct interconnection.
According to said method of the present invention, described calling is the calling of interexchange without tandem exchange, it is identical that callee side and Calling Side move the data encoding format that soft switch judges corresponding media gateway both sides bearer connection endpoint respectively, then callee side media gateway and Calling Side media gateway are deleted from bearer path respectively, upgrade the bearing parameter of the bearer connection endpoint of caller and called affiliated base station map network side, make between caller and the called affiliated base station and carry direct interconnection.
According to said method of the present invention, comprise following concrete steps:
A3, callee side move soft switch and move soft switch transmission update inquiry information, the Session Description Protocol SDP information of carrying callee side BS map network side point to Calling Side;
B3, Calling Side soft switch are returned response message to the callee side soft switch, carry the SDP information of Calling Side BS map network side point;
C3, Calling Side move soft switch and send the medium update inquiry information to Calling Side BS, carry the bearing parameter after the SDP information conversion of callee side BS map network side point;
D3, Calling Side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with Calling Side;
E3, callee side move soft switch and send the medium update inquiry information to callee side BS, carry the bearing parameter after the SDP information conversion of Calling Side BS map network side point;
F3, callee side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with callee side;
G3, Calling Side move soft switch and send deletion message to the Calling Side media gateway, and discharging on the Calling Side media gateway is two end points of this call distribution, and the Calling Side media gateway is deleted from bearer path;
H3, callee side move soft switch and send deletion message to the callee side media gateway, and discharging on the callee side media gateway is two end points of this call distribution, and the callee side media gateway is deleted from bearer path; The end points of caller BS map network side and the end points direct interconnection of called BS map network side.
According to said method of the present invention, described calling is called out for the interexchange through a plurality of tandem exchanges, after then the interoffice bearer path was set up, the mobile soft switch of being moved soft switch adjacent intermediate medium gateway correspondence in described bearer path by Calling Side or callee side sent update inquiry information; And whether the data encoding format of media gateway both sides bearer connection endpoint of judging its control is identical, if identical, then the media gateway of being controlled deleted from bearer path;
The mobile soft switch of described intermediate medium gateway correspondence is jumped mobile soft switch to next successively and is transmitted described update inquiry information up to calling out the mobile soft switch that another inserts the side correspondence, whether each moves the data encoding format that soft switch judges corresponding media gateway both sides bearer connection endpoint respectively identical, if identical, then corresponding media gateway is deleted from bearer path;
Whether identical, if identical, then the media gateway of being controlled is deleted from bearer path if calling out another data encoding format that inserts the side shifting soft switch judgement media gateway both sides bearer connection endpoint of controlling;
After carrying out the media gateway deletion, if the current adjacent media gateway that still is retained in the bearer connection endpoint in the bearer path is deleted, then upgrade the bearing parameter of this bearer connection endpoint, make carrying interconnection between media gateway not deleted in the affiliated base station of caller, the bearer path and the called affiliated base station.
According to said method of the present invention, if callee side moves the data encoding format difference that the media gateway both sides bearer connection endpoint of being controlled is judged in soft switch, then send update inquiry information to adjacent mobile soft switch, carry the bearing parameter of the contiguous Calling Side end points of being controlled of media gateway; If it is identical that callee side moves the data encoding format that soft switch judges the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information to adjacent mobile soft switch, carry the bearing parameter of the BS upper extreme point that is connected;
After update inquiry information was received in described adjacent mobile soft switch, if this mobile soft switch only is used for the signaling tandem and does not control media gateway, then this update inquiry information of transparent transmission was jumped mobile soft switch to next; If judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information and jump mobile soft switch to next, carry the bearing parameter of the contiguous Calling Side end points of being controlled of media gateway; Return the update request response message simultaneously, carry the bearing parameter of the close callee side end points of being controlled of media gateway; If it is identical to judge the data encoding format of the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information and jump mobile soft switch to next, carry bearing parameter entrained in the update inquiry information of receiving;
Caller is moved after soft switch receives update inquiry information, if judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, then return the update request response message, carry the bearing parameter of the contiguous callee side end points of being controlled of media gateway; If it is identical to judge the data encoding format of the media gateway both sides bearer connection endpoint of being controlled, then in the update request response message, carry the bearing parameter of the BS upper extreme point that is connected;
Each moves after soft switch receives the update request response message, if insert the side soft switch or judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, according to existing bearer update flow processing; If identical, the update request response message that transparent transmission is received is jumped mobile soft switch to next.
According to said method of the present invention, described update inquiry information is a sip message.
According to said method of the present invention, the related functional entities of realizing call signaling control between separation and Access Network and the core net in the mobile communications network after the interface IPization is controlled in described mobile soft switch for carrying.
Beneficial effect of the present invention is as follows:
Along with mobile radio communication to the continuous evolution of complete IP network, increasing operator tends to use unified coded format, calling out two ends, can to consult the possibility of same-code form increasing, by adopting bearer path optimization of the present invention, avoid user data through unnecessary MGW, can effectively reduce network load, reduce the packet time delay, improve speech quality, reduce in the extended telephone conversation process taking of resource (RTP end points) on the MGW, reduce the circuitous possibility of route.
Description of drawings
Fig. 1 is for being to control bearing separation structure, the network entity connection diagram of Access Network and core net interface IPization in the prior art of example with CDMA2000;
Fig. 2 is station to station call signaling process figure in the prior art;
Fig. 3 provides data encoding format translation function schematic diagram for media gateway;
Fig. 4 inserts side not simultaneously, the inventive method signaling process figure for identical caller with called access side data coded format between the media gateway;
Fig. 5 is for inserting the identical and called access side of side data coded format not simultaneously, the inventive method signaling process figure with caller between the media gateway;
Fig. 6 inserts between side, the media gateway for caller and called access side data coded format when identical, the inventive method signaling process figure;
The inventive method signaling process figure when Fig. 7 passes through tandem exchange for station to station call;
Fig. 8 insert between side, the media gateway for caller and called access side data coded format not simultaneously, the inventive method signaling process figure;
When Fig. 9 optimizes for carrying out bearer path behind the bearer update, the inventive method signaling process figure;
Figure 10 after adopting the inventive method to carry out bearer path optimization, reactivates the signaling process figure that media gateway is carried out Business Processing.
Embodiment
The present invention is applied to carry the mobile communications network behind the Access Network and core net interface IPization under the control separation architecture, basic skills is: after setting up two-way user data bearer path between the calling and called, whether the data encoding format of being judged media gateway both sides bearer connection endpoint corresponding in the bearer path by mobile soft switch is identical, if, then this media gateway is deleted from bearer path, and upgrade the bearing parameter of bearer connection endpoint adjacent in the bearer path with this media gateway.
Media gateway situation according to different internetwork calling situations and needs deletion is illustrated respectively below.
Embodiment one: calling and called belong to the calling of same intra-exchange.
For office call, when calling and called during at same intra-exchange, situation is fairly simple; Behind called party answer, if it is identical that the data encoding format of media gateway (MGW) both sides bearer connection endpoint is judged in mobile soft switch, be that caller access side data coded format is identical with called access side data coded format, then MGW that local exchange is controlled is deleted from bearer path, upgrade the bearing parameter of the bearer connection endpoint of the affiliated base station of calling and called map network side, make between caller and the called affiliated base station and carry direct interconnection.
Embodiment two: caller is belonged to the calling of the different intra-exchanges under the same tandem exchange, can delete the callee side media gateway.
Referring to Fig. 4, suppose that it is EVRC that caller inserts the side data coded format, the data encoding format with called access side between the media gateway all is 13K, in this case, and deletion callee side media gateway, idiographic flow is as follows:
1, MSCe2 receives the Connect message of BS2, the indication called subscriber answer;
2, to judge called media gateway MGW 2 both sides data encoding formaies identical for MSCe2, can delete MGW2 and carry out bearer path optimization, sends UPDATE request message, the SDP information of wherein carrying BS2 map network side point 7 to MSCe1;
3, MSCe1 receives the SDP information of BS2 map network side point 7, judge Calling Side media gateway MGW 1 both sides data encoding format difference, explanation can not be deleted the bearer path optimization of MSG1, return 200 OK response to MSCe2, what wherein carry still is the SDP information of the corresponding callee side end points 4 of MGW1;
4, MSCe2 sends Bearer Update Request message to BS2, the SDP information of the corresponding callee side end points 4 of MGW1 is converted into bearing parameter carries to BS2;
5, BS2 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
6, MSCe1 receives the 200 OK response of the INVITE that MSCe2 returns;
7, MSCe1 issues MODIFY message to MGW1, the RemoteSDP of the last callee side end points 4 of MGW1 is updated to the SDP information of the end points 7 of BS2 map network side;
8, MSCe1 receives the REPLY message that MGW1 returns;
9, MSCe2 sends SUBSTRACT message to MGW2, discharges MGW2 and goes up two end points 5 and 6 for this call distribution;
10, MSCe2 receives the REPLY message that MGW2 returns;
11, MSCe1 returns ACK and gives MSCe2;
12, bi-directional bearers foundation is finished between the calling and called user;
13, behind the end of conversation, called subscriber's on-hook, MSCe2 receives the Clear Request message that BS2 sends;
14, MSCe2 sends Clear Command message to BS2;
15, MSCe1 receives the BYE message that MSCe2 sends;
16, MSCe1 sends Clear Command message to BS1;
17, MSCe1 receives the Clear Complete message that BS1 returns;
18, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
19, MSCe1 sends SUBSTRACT message to MGW1, discharges MGW1 and goes up two end points 3 and 4 for this call distribution;
20, MSCe1 receives the REPLY message that MGW1 returns;
21, MSCe2 receives the Clear Complete message that BS2 returns.
Describe as can be known by above-mentioned flow process, in this flow process, be updated to the SDP information of the end points of called BS2 map network side by RemoteSDP with the corresponding callee side end points of the MGW1 of Calling Side, and in called BS2, the opposite end address information of preserving is updated to the SDP information of the corresponding callee side end points of MGW1 of Calling Side, the MGW of deletion callee side realizes bearer path optimization from the call bearer path that calling and called are set up.
Embodiment three: caller is belonged to the calling of the different intra-exchanges under the same tandem exchange, can delete the Calling Side media gateway.
Referring to Fig. 5, suppose that the data encoding format that caller inserts between side data coded format and the media gateway all is EVRC, the data encoding format of called access side is 13K, in this case, and deletion Calling Side media gateway, idiographic flow is as follows:
1, MSCe2 receives the Connect message of BS2, the indication called subscriber answer;
2, it is inequality to judge the data encoding format of data encoding format between Calling Side MGW1 and the callee side MGW2 and called access side, can not delete the bearer path optimization of MGW2, send UPDATE message to MSCe1, wherein carry the SDP information of the corresponding Calling Side end points 5 of callee side MGW;
3, after MSCe1 receives UPDATE message, know the data encoding format between the gateway, and insert the side coded format with caller and compare, find that both are identical, explanation can be deleted the bearer path optimization of MSG1, send 200 OK for UPDATE message to MSCe2, wherein carry the SDP information of the end points 2 of the corresponding callee side of BS1;
4, MSCe2 issues MODIFY message to MGW2, the RemoteSDP of end points 5 is revised the SDP information of the end points 2 that is updated to the corresponding callee side of BS1 that carries in the 200 OK for UPDATE message;
5, MSCe2 receives the REPLY message that MGW2 returns;
6, MSCe2 returns the 200 OK response of INVITE;
7, MSCe1 sends ACK message to MSCe2;
8, MSCe1 sends Bearer Update Request message to BS1, the SDP information of the corresponding Calling Side end points 5 of MGW2 is converted into bearing parameter carries to BS1;
9, BS1 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
10, MSCe1 sends SUBSTRACT message to MGW1, discharges MGW1 and goes up two end points 3 and 4 for this call distribution;
11, MSCe1 receives the REPLY message that MGW1 returns;
12, MSCe1 returns ACK and gives MSCe2;
13, bi-directional bearers foundation is finished between the calling and called user;
14, behind the end of conversation, called subscriber's on-hook, MSCe2 receives the Clear Request message that BS2 sends;
15, MSCe2 sends Clear Command message to BS2;
16, MSCe1 receives the BYE message that MSCe2 sends;
17, MSCe1 sends Clear Command message to BS1;
18, MSCe1 receives the Clear Complete message that BS1 returns;
19, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
20, MSCe2 sends SUBSTRACT message to MGW2, discharges two end points 5 and 6 of this call distribution;
21, MSCe2 receives the REPLY message that MGW2 returns;
22, MSCe2 receives the Clear Complete message that BS2 returns.
Describe as can be known by above-mentioned flow process, in this flow process, be updated to the SDP information of the end points of caller BS1 map network side by RemoteSDP with the corresponding Calling Side end points of the MGW2 of callee side, and in caller BS1, the opposite end address information of preserving is updated to the SDP information of the corresponding Calling Side end points of MGW2 of callee side, the MGW of deletion Calling Side realizes bearer path optimization from the call bearer path that calling and called are set up.
Embodiment four: caller is belonged to the calling of the different intra-exchanges under the same tandem exchange, can delete callee side and Calling Side media gateway simultaneously.
Referring to Fig. 6, suppose that the Data-carrying coded format that caller inserts between side and called access side and the MGW is EVRC, in this case, can delete callee side and Calling Side media gateway simultaneously, idiographic flow is as follows:
1, MSCe2 receives the Connect message of BS2, the indication called subscriber answer;
2, to judge the data encoding format of data encoding format between Calling Side MGW and the callee side MGW and called access side identical for MSCe2, can delete the bearer path optimization of MGW2, send UPDATE (renewal) request message, the SDP information of wherein carrying BS2 map network side point 7 to MSCe1;
3, after MSCe1 receives UPDATE message, judge that Calling Side media gateway MGW 1 both sides data encoding format is identical, explanation can be deleted the bearer path optimization of MSG1, then returns 200 OK response, the SDP information of carrying BS1 map network side point 2 to MSCe2;
4, MSCe1 sends Bearer Update Request (bearer update request) message to BS1, the SDP information of the end points 7 of BS2 map network side is converted into bearing parameter carries to BS1;
5, BS1 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response (bearer update response) message;
6, MSCe2 sends Bearer Update Request message to BS2, the SDP information of the end points 2 of BS1 map network side is converted into bearing parameter brings BS2;
7, BS2 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
8, MSCe1 receives the 200 OK response of the INVITE that MSCe2 returns;
9, MSCe1 sends SUBSTRACT message to MGW1, discharges MGW1 and goes up two end points 3 and 4 for this call distribution;
10, MSCe1 receives the REPLY message that MGW1 returns;
11, MSCe2 sends SUBSTRACT message to MGW2, discharges MGW2 and goes up two end points 5 and 6 for this call distribution;
12, MSCe2 receives the REPLY message that MGW2 returns;
13, MSCe1 returns ACK and gives MSCe2;
14, bi-directional bearers foundation is finished between the calling and called user;
15, behind the end of conversation, called subscriber's on-hook, MSCe2 receives the Clear Request message that BS2 sends;
16, MSCe2 sends Clear Command message to BS2;
17, MSCe1 receives the BYE message that MSCe2 sends;
18, MSCe1 sends Clear Command message to BS1;
19, MSCe1 receives the Clear Complete message that BS1 returns;
20, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
21, MSCe2 receives the Clear Complete message that BS2 returns.
Describe as can be known by above-mentioned flow process, in this flow process, by preserve the IP address and the port number information of opposite end BS map network side point in Calling Side and callee side BS, the MGW of deletion Calling Side and callee side from the call bearer path that calling and called are set up realizes bearer path optimization respectively.
Embodiment five: caller is belonged to the calling in the different tandem exchanges, and deletion does not provide the MGW of media format translation functions from bearer path.
Referring to Fig. 7, suppose that caller inserts side, it is EVRC (Enhanced Variable Rate Codec that the carrying coded format is controlled between the MGW in Calling Side MGW and tandem exchange, strengthen the variable bit rate encoding and decoding), between MGW that tandem exchange is controlled and the callee side MGW, the carrying coded format of called access side is the 13K voice, and the TC that hereinafter mentions refers to that MGW provides the parts of encoding and decoding conversion function, and MGW provides TC explanation MGW both sides coded format inequality.Idiographic flow is as follows:
1.MSCe3 receive the Connect message of BS3, the indication called subscriber answer;
In call path, do not provide TC (MGW3 both sides end points coded format in this calling is identical) 2.MSCe3 judge the MGW3 that is controlled, MGW3 can be deleted from call path, send UPDATE (renewal) request message, the SDP information of wherein carrying BS3 map network side point 9 to MSCe2; In call path, provide TC if MSCe3 judges the MGW3 that is controlled, send UPDATE message too, wherein carry the SDP information of the corresponding Calling Side end points 7 of MGW3 to MSCe2;
3.MSCe2 receive UPDATE message, judge that the MGW2 that is controlled provides TC, then return the 200 OK response of UPDATE, the SDP information of wherein carrying the corresponding callee side end points 6 of MGW2; Usually, if non-caller inserts side MSCe and receives UPDATE message, then send UPDATE message to the next MSCe of Calling Side, if the MGW that MSCe controlled does not provide TC, promptly the MGW that is controlled can delete from bearer path, then uses SDP information entrained among the UPDATE that receives as the SDP in the UPDATE message of sending; Otherwise carry the SDP of the Calling Side end points of the MGW that controls in the UPDATE message of sending, and return the 200 OK response of UPDATE message, wherein carry the SDP information of the MGW that controls of institute correspondence callee side end points; Caller inserts side MSCe and receives UPDATE message, directly returns 200 OK response, wherein SDP information or the BS side point SDP information that whether provides TC to carry MGW callee side end points respectively according to control MGW;
4.MSCe2 issue MODIFY message to MGW2, the RemoteSDP of the last callee side end points 6 of MGW2 be updated to the SDP information of the end points 9 of BS3 map network side;
5.MSCe2 receive the REPLY message that MGW2 returns;
6.MSCe2 send UPDATE (renewal) request message to MSCe1, wherein carry the SDP information of the corresponding Calling Side end points 5 of MGW2;
7.MSC1 receive UPDATE message, be judged as that caller inserts side MSCe and the MGW1 that controlled does not provide TC in call path, then return the 200 OK response of UPDATE, the SDP information of wherein carrying the corresponding callee side end points 2 of BS1;
8.MSCe2 issue MODIFY message to MGW2, the RemoteSDP of the last Calling Side end points 5 of MGW2 be updated to the SDP information of the end points 2 of BS1 map network side;
9.MSCe2 receive the REPLY message that MGW2 returns;
10.MSCe3 send 200 OK response messages of INVITE request to MSCe2;
11.MSCe2 send 200 OK response messages of INVITE request to MSCe1;
12.MSCe1 return ACK message to MSCe2;
13.MSCe2 return ACK message to MSCe3;
14.MSCe3 send Bearer Update Request (bearer update request) message to BS3, the SDP information of the corresponding callee side end points 6 of MGW2 be converted into bearing parameter bring BS3;
15.BS3 upgrade the opposite end beared information of oneself preserving according to the bearing parameter in the Bearer Update Request message, and return Bearer Update Response message;
16.MSCe1 send Bearer Update Request message to BS1, the SDP information of the corresponding Calling Side end points 5 of MGW2 be converted into bearing parameter bring BS1;
17.BS1 upgrade the opposite end beared information of oneself preserving according to the bearing parameter in the Bearer Update Request message, and return Bearer Update Response message;
18. bi-directional bearers is set up and is finished between the calling and called user;
19. behind the end of conversation, called subscriber's on-hook, MSCe3 receives the Clear Request message that BS3 sends;
20.MSCe3 send Clear Command message to BS3;
21.MSCe2 receive the BYE message that MSCe3 sends;
22.MSCe2 send BYE message to MSCe1;
23.MSCe1 send Clear Command message to BS1;
24.MSCe1 receive the Clear Complete message that BS1 returns;
25.MSCe1 the 200 OK response messages that send BYE are to MSCe2;
26.MSCe2 the 200 OK response messages that send BYE are to MSCe3;
27.MSCe2 send SUBSTRACT message to MGW2, discharge MGW2 and go up two end points 5 and 6 for this call distribution;
28.MSCe2 receive the REPLY message that MGW2 returns;
29.MSCe3 receive the Clear Complete message that BS3 returns.
Above-mentioned Fig. 7 is to be example with the tandem exchange of calling out through a control media gateway, illustrate how to delete the MGW that audio coder ﹠ decoder (codec) (TC) is not provided from bearer path.In the practical application, also may pass through a plurality of tandem exchanges and a plurality of intermediate medium gateway, its signaling control principle is similar, and update inquiry information wherein (UPDATE) is sent to the mobile soft switch of next stage MGW correspondence by the mobile soft switch of upper level MGW correspondence; Mobile soft switch at different levels judge respectively whether the data encoding format of both sides end points of the MGW that it is corresponding is identical, if, the corresponding MGW of deletion in bearer path then.
After carrying out the media gateway deletion, if the current adjacent media gateway that still is retained in the bearer connection endpoint in the bearer path is deleted, then upgrade the bearing parameter of this bearer connection endpoint, make carrying interconnection between media gateway not deleted in the affiliated base station of caller, the bearer path and the called affiliated base station.
It should be noted that if tandem exchange only carries out the signaling tandem and do not control media gateway in calling procedure the UPDATE message of a transparent transmission dealing and 200 OK of UPDATE message response are not judged and other operation.
Embodiment six: can not carry out bearer path optimization.
Referring to Fig. 8, suppose that it is EVRC that caller inserts the side data coded format, the data encoding format between the media gateway is for G.711, and the data encoding format of called access side is 13K, and idiographic flow is as follows:
1, MSCe2 receives the Connect message of BS2, the indication called subscriber answer;
2, it is inequality that MSCe2 judges the data encoding format of data encoding format between Calling Side MGW and the callee side MGW and called access side, can not delete the bearer path optimization of MGW2, send UPDATE message to MSCe1, carry the SDP information of the corresponding Calling Side end points 5 of callee side MGW;
3, after MSCe1 receives UPDATE message, know the data encoding format between the gateway, and insert the side coded format with caller and compare, find both differences, explanation can not be deleted the bearer path optimization of MSG1, then send 200 OK for UPDATE message to MSCe2, wherein carry the SDP information of the end points 4 of the corresponding callee side of Calling Side MGW;
4, MSCe1 receives the 200 OK for INVITE of MSCe2;
5, MSCe1 returns ACK and gives MSCe2;
6, bi-directional bearers foundation is finished between the calling and called user;
7, behind the end of conversation, called subscriber's on-hook, MSCe2 receives the Clear Request message that BS2 sends;
8, MSCe2 sends Clear Command message to BS2;
9, MSCe1 receives the BYE message that MSCe2 sends;
10, MSCe1 sends Clear Command message to BS1;
11, MSCe1 receives the Clear Complete message that BS1 returns;
12, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
13, MSCe1 sends SUBSTRACT message to MGW1, discharges two end points 3 and 4 of this call distribution;
14, MSCe1 receives the REPLY message that MGW1 returns;
15, MSCe2 receives the Clear Complete message that BS2 returns;
16, MSCe2 sends SUBSTRACT message to MGW2, discharges two end points 5 and 6 of this call distribution;
17, MSCe2 receives the REPLY message that MGW2 returns.
In above-mentioned flow process, because that caller inserts the data encoding format of using with called access side between side, the gateway is all different, need media gateway participation format conversion, can not carry out bearer path optimization, its aftermentioned flow process 7～17 of taking out stitches is same as the prior art.
In addition, prior art has been supported the bearer update process, exist two-way bearer path to set up after, certain section or a few sections situations that bearing parameter changes, at this moment also can be initiated by mobile soft switch, bearer path is carried out possible optimization, it is similar to optimize flow process and each scheme of front.
Referring to Fig. 9, suppose that it is EVRC that the two-way call carrying caller of building up originally inserts the side data coded format, data encoding format between the media gateway is G711, the data encoding format of called access side is 13K, the bearing parameter change has taken place after the conversation, caller inserts the side data coded format and becomes SMV (Selectable Mode Vocoders), and the data encoding format between the media gateway becomes SMV, and the data encoding format of called access side still is 13K:
1, bi-directional bearers foundation is finished between the calling and called user;
2,3, bearing parameter is consulted modification process, and is same as the prior art;
4, MSCe1 judges caller to insert the data encoding format of side and Calling Side MGW identical with data encoding format between the callee side MGW, can delete the bearer path optimization of MGW1, send re-INVITE message, the SDP information of carrying Calling Side BS end points 2 to MSCe2;
5, after MSCe2 receives re-INVITE message, know the data encoding format between the gateway, and and called access side coded format relatively, find both differences, explanation can not be deleted the bearer path optimization of MSG2, then send 200OK for re-INVITE message to MSCe1, wherein carry the SDP information of the end points 5 of the corresponding Calling Side of callee side MGW2;
6, MSCe1 returns ACK and gives MSCe2;
7, MSCe1 sends Bearer Update Request (bearer update request) message to BS1, the SDP information of the corresponding Calling Side end points 5 of MGW2 is converted into bearing parameter brings BS1;
8, BS1 upgrades the opposite end beared information of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
9, MSCe1 sends SUBSTRACT message to MGW1, discharges two end points 3 and 4 of this call distribution;
10, MSCe1 receives the REPLY message that MGW1 returns;
11, MSCe2 issues MODIFY message to MGW2, the RemoteSDP of end points 5 is revised the SDP information of the end points 2 that is updated to the corresponding callee side of BS1 that carries in the 200 OK for re-INVITE message;
12, MSCe2 receives the REPLY message that MGW2 returns;
13, the calling and called user is still in the two-way call process;
14, behind the end of conversation, called subscriber's on-hook, MSCe2 receives the Clear Request message that BS2 sends;
15, MSCe2 sends Clear Command message to BS2;
16, MSCe1 receives the BYE message that MSCe2 sends;
17, MSCe1 sends Clear Command message to BS1;
18, MSCe1 receives the Clear Complete message that BS1 returns;
19, MSCe1 sends the 200 OK response messages of BYE to MSCe2;
20, MSCe2 receives the Clear Complete message that BS2 returns;
21, MSCe2 sends SUBSTRACT message to MGW2, discharges two end points 5 and 6 of this call distribution;
22, MSCe2 receives the REPLY message that MGW2 returns.
Describe as can be known by above-mentioned flow process, in this flow process, after changing, also can realize the optimization of bearer path by the method that TC is not provided in the deleting bearing path owing to business-driven or the carrying of other reason one section or several sections carrying coded formats.
Under fewer situation, after having carried out carrying optimization, because business-driven, may also need to carry out playback, DTMF detects and reports, insert operations such as conferencing resource, though operation is different, the thinking that MSCe handles is similar: send ADD message application corresponding endpoint to corresponding M GW, for meeting, need cooperate by SIP signaling and A1p interface signaling then according to the application of meeting acceding party number, upgrade the bearing parameter information of BS side, end points on the MGW is reintegrated in the bearer path, carry out resource operation, can finish the playback in the communication process by MGW is gone up corresponding endpoint, DTMF detects and reports, and inserts processing such as conferencing resource.During end of conversation, each end points of the last application of MGW will be released.Referring to Figure 10, being sidelong TIB tone in band with carrying optimization back caller MSCe control to caller is that example brief description handling process is as follows:
1, calling and called enter the two-way call state, and BS directly carries interconnection, do not have MGW to exist in the bearer path;
2, MSCe1 issues ADD message to MGW1, and request distributes two RTP end points, respectively the bearer connection endpoint of corresponding BS1 side and callee side;
3, MSCe1 receives the REPLY message that MGW1 returns, and wherein carries the SDP information of two good RTP end points of application, mainly comprises the coded format that MGW1 supports respectively, the IP address of end points separately, port numbers;
4, MSCe1 sends Bearer Update Request message to BS1, the SDP information of the corresponding BS1 end points of MGW1 is converted into bearing parameter brings BS1;
5, BS1 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
6, MSCe1 sends re-INVITE message to MSCe2, carries the SDP parameter that MGW1 goes up corresponding callee side end points 4;
7, MSCe2 sends Bearer Update Request message to BS2, the SDP information of the corresponding callee side end points 4 of MGW1 is converted into bearing parameter brings BS2;
8, BS2 upgrades the peer IP address and the port numbers of oneself preserving according to the bearing parameter in the Bearer Update Request message, and returns Bearer Update Response message;
9, MSCe2 carries the SDP information of BS2 near Calling Side end points 7 to the 200 OK response that MSCe1 returns re-INVITE message;
10, MSCe1 sends ACK message to MSCe2;
11, MSCe1 issues MODIFY message to MGW1, the RemoteSDP of the corresponding callee side end points 4 of MGW1 is revised the SDP information of the end points 7 that is updated to called BS2 map network side;
12, MSCe1 receives the REPLY message that MGW1 returns;
13, MSCe1 issues MODIFY message to MGW1, to playback in end points 3 bands;
14, MSCe1 receives the REPLY message that MGW1 returns;
15, MGW1 sets up to the unidirectional carrying of calling subscriber;
16, MSCe1 issues MODIFY message to MGW1, and end points 3 is stopped playback;
17, MSCe1 receives the REPLY message that MGW1 returns;
18, playback finishes, and calling and called reenter the two-way call state.
By above instantiation flow process as can be seen, when calling and called set up two-way user data bearer path by conventional call flow or to bearer path in after certain section or a few sections carrying codings change, initiate by mobile soft switch, the media gateway (MGW) that audio coder ﹠ decoder (codec) is not provided in the bearer path deleted from bearer path can reduce the packet time delay, improve speech quality; In long-time two-way call process, do not take the utilance that the MGW end points can fully improve the MGW resource.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1, a kind of optimization method of load supporting path, it is characterized in that, the calling subscriber calls out the called subscriber, after setting up the bearer path of this calling, whether the data encoding format of being judged corresponding media gateway both sides bearer connection endpoint in the bearer path by mobile soft switch is identical, if the data encoding format of media gateway both sides bearer connection endpoint is identical, then this media gateway is deleted from described bearer path, and upgrade the bearing parameter of the bearer connection endpoint adjacent with this media gateway.
2, the method for claim 1, it is characterized in that, described calling is the calling of same intra-exchange, the data encoding format that corresponding media gateway both sides bearer connection endpoint is judged in mobile soft switch is identical, corresponding media gateway is deleted from described bearer path, upgrade the bearing parameter of the bearer connection endpoint of the affiliated base station of calling and called map network side, make between caller and the called affiliated base station and carry direct interconnection.
3, the method of claim 1, it is characterized in that, described calling is the calling of interexchange without tandem exchange, it is identical that callee side moves the data encoding format that soft switch judges callee side media gateway both sides bearer connection endpoint, Calling Side moves the data encoding format difference that Calling Side media gateway both sides bearer connection endpoint is judged in soft switch, then the callee side media gateway is deleted from bearer path, upgrade called under the bearing parameter of bearer connection endpoint of the bearer connection endpoint of base station map network side and the corresponding callee side of caller media gateway, make and carry direct interconnection between base station and the Calling Side media gateway under called.
4, method as claimed in claim 3 is characterized in that, comprises following concrete steps:
A1, callee side move soft switch and move soft switch transmission update inquiry information, the Session Description Protocol SDP information of carrying callee side BS map network side point to Calling Side;
B1, Calling Side move soft switch and move soft switch echo reply message to callee side, carry the SDP information of the corresponding callee side end points of Calling Side media gateway;
C1, callee side move soft switch and send the medium update inquiry information to callee side BS, the bearing parameter after the SDP information of carrying the corresponding callee side end points of Calling Side media gateway transforms;
D1, callee side BS upgrade the opposite end address information of preserving with the described bearing parameter that carries in the described medium update inquiry information;
E1, Calling Side soft switch issue revises MODIFY message to the Calling Side media gateway, the long-range SDP of its corresponding callee side end points is updated to the SDP information of callee side BS map network side point;
F1, callee side move soft switch and send deletion message to the callee side media gateway, and discharging the callee side media gateway is two end points of this call distribution, and the callee side media gateway is deleted from bearer path; Callee side BS map network side point and the corresponding callee side end points of Calling Side media gateway direct interconnection.
5, the method of claim 1, it is characterized in that, described calling is the calling of interexchange without tandem exchange, callee side moves the data encoding format difference that callee side media gateway both sides bearer connection endpoint is judged in soft switch, it is identical that Calling Side moves the data encoding format that soft switch judges Calling Side media gateway both sides bearer connection endpoint, then the Calling Side media gateway is deleted from bearer path, the bearing parameter of the bearer connection endpoint of the bearer connection endpoint of base station map network side and the corresponding Calling Side of called media gateway under the renewal caller makes between affiliated base station of caller and the callee side media gateway and carries direct interconnection.
6, method as claimed in claim 5 is characterized in that, comprises following concrete steps:
A2, Calling Side move soft switch and move soft switch transmission request (re-INVITE) message again, the SDP information of carrying Calling Side BS map network side point to callee side;
B2, callee side move soft switch and judge echo reply message, carry the SDP information of the corresponding Calling Side end points of callee side media gateway;
C2, callee side move soft switch and issue modification MODIFY message to the callee side media gateway, the long-range SDP of the last corresponding Calling Side end points of this MGW are updated to the SDP information of Calling Side BS map network side point;
D2, Calling Side move soft switch and send the medium update inquiry information to Calling Side BS, the bearing parameter after the SDP information of carrying the corresponding Calling Side end points of callee side media gateway transforms;
E2, Calling Side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with Calling Side;
F2, Calling Side move soft switch and send deletion message to the Calling Side media gateway, and discharging on the Calling Side media gateway is two end points of this call distribution, and the Calling Side media gateway is deleted from bearer path; Calling Side BS map network side point and the corresponding Calling Side end points of callee side media gateway direct interconnection.
7, the method for claim 1, it is characterized in that, described calling is the calling of interexchange without tandem exchange, it is identical that callee side and Calling Side move the data encoding format that soft switch judges corresponding media gateway both sides bearer connection endpoint respectively, then callee side media gateway and Calling Side media gateway are deleted from bearer path respectively, upgrade the bearing parameter of the bearer connection endpoint of caller and called affiliated base station map network side, make between caller and the called affiliated base station and carry direct interconnection.
8, method as claimed in claim 7 is characterized in that, comprises following concrete steps:
A3, callee side move soft switch and move soft switch transmission update inquiry information, the Session Description Protocol SDP information of carrying callee side BS map network side point to Calling Side;
B3, Calling Side soft switch are returned response message to the callee side soft switch, carry the SDP information of Calling Side BS map network side point;
C3, Calling Side move soft switch and send the medium update inquiry information to Calling Side BS, carry the bearing parameter after the SDP information conversion of callee side BS map network side point;
D3, Calling Side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with Calling Side;
E3, callee side move soft switch and send the medium update inquiry information to callee side BS, carry the bearing parameter after the SDP information conversion of Calling Side BS map network side point;
F3, callee side BS move the described bearing parameter that carries in the medium update inquiry information of soft switch transmission and upgrade the opposite end address information of preserving with callee side;
G3, Calling Side move soft switch and send deletion message to the Calling Side media gateway, and discharging on the Calling Side media gateway is two end points of this call distribution, and the Calling Side media gateway is deleted from bearer path;
H3, callee side move soft switch and send deletion message to the callee side media gateway, and discharging on the callee side media gateway is two end points of this call distribution, and the callee side media gateway is deleted from bearer path; The end points of caller BS map network side and the end points direct interconnection of called BS map network side.
9, the method for claim 1, it is characterized in that, described calling is called out for the interexchange through a plurality of tandem exchanges, after then the interoffice bearer path was set up, the mobile soft switch of being moved soft switch adjacent intermediate medium gateway correspondence in described bearer path by Calling Side or callee side sent update inquiry information; And whether the data encoding format of media gateway both sides bearer connection endpoint of judging its control is identical, if identical, then the media gateway of being controlled deleted from bearer path;
The mobile soft switch of described intermediate medium gateway correspondence is jumped mobile soft switch to next successively and is transmitted described update inquiry information up to calling out the mobile soft switch that another inserts the side correspondence, whether each moves the data encoding format that soft switch judges corresponding media gateway both sides bearer connection endpoint respectively identical, if identical, then corresponding media gateway is deleted from bearer path;
Whether identical, if identical, then the media gateway of being controlled is deleted from bearer path if calling out another data encoding format that inserts the side shifting soft switch judgement media gateway both sides bearer connection endpoint of controlling;
After carrying out the media gateway deletion, if the current adjacent media gateway that still is retained in the bearer connection endpoint in the bearer path is deleted, then upgrade the bearing parameter of this bearer connection endpoint, make carrying interconnection between media gateway not deleted in the affiliated base station of caller, the bearer path and the called affiliated base station.
10, method as claimed in claim 9, it is characterized in that, if callee side moves the data encoding format difference that the media gateway both sides bearer connection endpoint of being controlled is judged in soft switch, then send update inquiry information to adjacent mobile soft switch, carry the bearing parameter of the contiguous Calling Side end points of being controlled of media gateway; If it is identical that callee side moves the data encoding format that soft switch judges the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information to adjacent mobile soft switch, carry the bearing parameter of the BS upper extreme point that is connected;
After update inquiry information was received in described adjacent mobile soft switch, if this mobile soft switch only is used for the signaling tandem and does not control media gateway, then this update inquiry information of transparent transmission was jumped mobile soft switch to next; If judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information and jump mobile soft switch to next, carry the bearing parameter of the contiguous Calling Side end points of being controlled of media gateway; Return the update request response message simultaneously, carry the bearing parameter of the close callee side end points of being controlled of media gateway; If it is identical to judge the data encoding format of the media gateway both sides bearer connection endpoint of being controlled, then send update inquiry information and jump mobile soft switch to next, carry bearing parameter entrained in the update inquiry information of receiving;
Caller is moved after soft switch receives update inquiry information, if judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, then return the update request response message, carry the bearing parameter of the contiguous callee side end points of being controlled of media gateway; If it is identical to judge the data encoding format of the media gateway both sides bearer connection endpoint of being controlled, then in the update request response message, carry the bearing parameter of the BS upper extreme point that is connected;
Each moves after soft switch receives the update request response message, if insert the side soft switch or judge the data encoding format difference of the media gateway both sides bearer connection endpoint of being controlled, according to existing bearer update flow processing; If identical, the update request response message that transparent transmission is received is jumped mobile soft switch to next.
As claim 4,6,8 or 10 described methods, it is characterized in that 11, described update inquiry information is a sip message.
As the described method of claim 1-10, it is characterized in that 12, the related functional entities of realizing call signaling control between separation and Access Network and the core net in the mobile communications network after the interface IPization is controlled in described mobile soft switch for carrying.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101129260A CN1870772A (en) | 2005-10-14 | 2005-10-14 | Optimization method of load supporting path |
| CN200680006576.2A CN101288320B (en) | 2005-10-14 | 2006-10-12 | Method and device for establishing and optimizing bearer path |
| PCT/CN2006/002688 WO2007041963A1 (en) | 2005-10-14 | 2006-10-12 | A method for establishing, optimizing bearer path and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101129260A CN1870772A (en) | 2005-10-14 | 2005-10-14 | Optimization method of load supporting path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1870772A true CN1870772A (en) | 2006-11-29 |
Family
ID=37444308
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101129260A Pending CN1870772A (en) | 2005-10-14 | 2005-10-14 | Optimization method of load supporting path |
| CN200680006576.2A Expired - Fee Related CN101288320B (en) | 2005-10-14 | 2006-10-12 | Method and device for establishing and optimizing bearer path |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680006576.2A Expired - Fee Related CN101288320B (en) | 2005-10-14 | 2006-10-12 | Method and device for establishing and optimizing bearer path |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN1870772A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037185A1 (en) * | 2006-09-30 | 2008-04-03 | Huawei Technologies Co., Ltd. | A method, device and system for bearing voice data |
| WO2008098501A1 (en) * | 2007-02-02 | 2008-08-21 | Huawei Technologies Co., Ltd. | Gsm bearing set up method, apparatus and system |
| WO2009117879A1 (en) * | 2008-03-26 | 2009-10-01 | 中兴通讯股份有限公司 | Method for indicating the bearer management of the service gateway |
| WO2010031317A1 (en) * | 2008-09-22 | 2010-03-25 | 华为技术有限公司 | Processing method and apparatus for routing optimization bearing |
| CN102308560A (en) * | 2011-07-18 | 2012-01-04 | 华为技术有限公司 | Transmission method and device of media stream data in cloud calculative system |
| CN101237603B (en) * | 2007-02-02 | 2012-07-04 | 华为技术有限公司 | A method and system for realizing IP interface between GSM wireless network and core network |
| CN101316379B (en) * | 2007-06-01 | 2013-06-05 | 华为技术有限公司 | Method, device and system for implementing IP A interface in second generation mobile communication system |
| CN104244294A (en) * | 2013-06-07 | 2014-12-24 | 电信科学技术研究院 | Direct communication path switching method and equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012010336A1 (en) * | 2010-07-23 | 2012-01-26 | Telefonaktiebolaget L M Ericsson (Publ) | Gating control in a telecommunications network |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2217838C (en) * | 1996-11-07 | 2003-07-29 | At&T Corp. | Wan-based voice gateway |
| ES2305311T3 (en) * | 2001-11-27 | 2008-11-01 | NOKIA SIEMENS NETWORKS GMBH & CO. KG | PROCEDURE FOR EXCHANGING USEFUL INFORMATION GENERATED ACCORDING TO DIFFERENT CODING LAWS BETWEEN AT LEAST TWO PAYMENT TERMINALS. |
| EP1341356A3 (en) * | 2002-02-25 | 2008-10-22 | Alcatel Lucent | Two-way video gateway and method for establishing an audio and video communications link between dissimilar multimedia terminals |
| CN100397846C (en) * | 2003-08-19 | 2008-06-25 | 华为技术有限公司 | Method for supporting different port marker by medium gateway controller |
| CN100544514C (en) * | 2003-11-14 | 2009-09-23 | 中兴通讯股份有限公司 | The switching method of mobile flexible exchanging network and device |
-
2005
- 2005-10-14 CN CNA2005101129260A patent/CN1870772A/en active Pending
-
2006
- 2006-10-12 CN CN200680006576.2A patent/CN101288320B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008037185A1 (en) * | 2006-09-30 | 2008-04-03 | Huawei Technologies Co., Ltd. | A method, device and system for bearing voice data |
| US7945267B2 (en) | 2006-09-30 | 2011-05-17 | Huawei Technologies Co., Ltd. | Method, apparatus and system for bearing voice data |
| WO2008098501A1 (en) * | 2007-02-02 | 2008-08-21 | Huawei Technologies Co., Ltd. | Gsm bearing set up method, apparatus and system |
| EP2107818A1 (en) * | 2007-02-02 | 2009-10-07 | Huawei Technologies Co., Ltd. | Gsm bearing set up method, apparatus and system |
| EP2107818A4 (en) * | 2007-02-02 | 2010-10-06 | Huawei Tech Co Ltd | Gsm bearing set up method, apparatus and system |
| CN101237603B (en) * | 2007-02-02 | 2012-07-04 | 华为技术有限公司 | A method and system for realizing IP interface between GSM wireless network and core network |
| US8401029B2 (en) | 2007-02-02 | 2013-03-19 | Huawei Technologies Co., Ltd. | Method, device and system for establishing a bearer for a GSM network |
| CN101316379B (en) * | 2007-06-01 | 2013-06-05 | 华为技术有限公司 | Method, device and system for implementing IP A interface in second generation mobile communication system |
| WO2009117879A1 (en) * | 2008-03-26 | 2009-10-01 | 中兴通讯股份有限公司 | Method for indicating the bearer management of the service gateway |
| US8582503B2 (en) | 2008-03-26 | 2013-11-12 | Zte Corporation | Method for indicating the bearer management of a serving gateway |
| WO2010031317A1 (en) * | 2008-09-22 | 2010-03-25 | 华为技术有限公司 | Processing method and apparatus for routing optimization bearing |
| CN102308560A (en) * | 2011-07-18 | 2012-01-04 | 华为技术有限公司 | Transmission method and device of media stream data in cloud calculative system |
| CN102308560B (en) * | 2011-07-18 | 2014-04-16 | 华为技术有限公司 | Transmission method and device of media stream data in cloud calculative system |
| US9178925B2 (en) | 2011-07-18 | 2015-11-03 | Huawei Technologies Co., Ltd. | Exchanging media stream data between thin client and media gateway, bypassing virtual machine, in cloud computing system |
| US10313407B2 (en) | 2011-07-18 | 2019-06-04 | Huawei Technologies Co., Ltd. | Method and apparatus for establishing a session between a thin client and a media gateway for media data streaming |
| CN104244294A (en) * | 2013-06-07 | 2014-12-24 | 电信科学技术研究院 | Direct communication path switching method and equipment |
| CN104244294B (en) * | 2013-06-07 | 2018-03-16 | 电信科学技术研究院 | A kind of direct communication path reverse method and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101288320B (en) | 2013-01-09 |
| CN101288320A (en) | 2008-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1184790C (en) | Integrated mobile telephone, GPS and blueteeth compound terminal and control method thereof | |
| CN1359585A (en) | System and method for providing access to service nodes from entities disposed in an integrated telecommunications network | |
| CN1881958A (en) | Method and apparatus for user device switching from packet domain to circuit domain | |
| CN101061729A (en) | Method and related mobile communication system for providing combinational network services | |
| CN1147176C (en) | Implementation of call setup procedures with separation of call control and bearer control | |
| CN101047515A (en) | Charging associated method and system of applied service | |
| CN1348664A (en) | Telecommunication services identification in a gateway | |
| CN1816053A (en) | Flow-media direct-broadcasting P2P network method based on conversation initialization protocol | |
| CN1312635A (en) | Multi-business communication system and method thereof | |
| CN1177491C (en) | Call processing method. subscriber unit, and access control apparatus operated in wireless local loop system | |
| CN1874328A (en) | Method and system for implementing intercommunication of operation | |
| CN1868197A (en) | Method, software product and device for signalling bearer channel modifications by means of a SIP protocol | |
| CN101064960A (en) | Method, system and apparatus for performing optimization by anchoring continuously voice call | |
| CN101064863A (en) | Method and system for providing media resource service in IMS network | |
| CN1870772A (en) | Optimization method of load supporting path | |
| CN101047630A (en) | System for implementing short message service and method for transmitting short message | |
| CN1801814A (en) | Off-line message transmitting and receiving method | |
| CN1545303A (en) | Method for implementing multi-party conference service in communication network with separated bearing and controlling | |
| CN1852362A (en) | Method and system for dialed's providing indication information to dialing | |
| CN101056308A (en) | Implementation method of high-speed fax signaling flow supported by the media capability negotiation | |
| CN101064683A (en) | Method, system and apparatus for processing complement service | |
| CN101056349A (en) | Implementation method of the high-speed fax signaling flow supported by the gateway control protocol | |
| CN1878151A (en) | System, method and information processing device for realizing multimedia service change | |
| CN1949752A (en) | System and method for communication of circuit exchange network and IP multimedia subsystem network | |
| CN101076186A (en) | Method, network and apparatus for processing afterservice |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |