CN101553042B - Method, system and equipment for selecting gateway - Google Patents
Method, system and equipment for selecting gateway Download PDFInfo
- Publication number
- CN101553042B CN101553042B CN 200810089724 CN200810089724A CN101553042B CN 101553042 B CN101553042 B CN 101553042B CN 200810089724 CN200810089724 CN 200810089724 CN 200810089724 A CN200810089724 A CN 200810089724A CN 101553042 B CN101553042 B CN 101553042B
- Authority
- CN
- China
- Prior art keywords
- gateway
- msc
- identification
- message
- media information
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
Abstract
The invention discloses a method, a system and equipment for selecting gateways. The method comprises the following steps: a second mobile switching center server receives messages which arecarried with a gateway mark and the gateway media information of a first gateway occupied by a first mobile switching center server and sent by the first mobile switching center server; and when the second mobile switching center server can use the first gateway to provide service, the second mobile switching center server uses the first gateway to establish loading according to the gateway media information and returns a second gateway mark, wherein the second gateway mark is the same gateway mark as the first gateway mark. The embodiment of the invention can optimize loading paths by occupying a same media gateway by a plurality of MSC-S.
Description
Technical field
The present invention relates to communication technical field, relate in particular to method, system and equipment that a kind of gateway is selected.
Background technology
WCDMA (Wideband CDMA; WCDMA) core net from the circuit mode of R99 to packet-based soft switch evolution; Be divided into R4BICN (bearer independent core net), two stages of R5IMS (IP Multimedia System); R4 BICN is basic with BICC (Bearer Independent Call Controlprotocol, bearer independent call control) with agreement H.248, is intended to packetizing WCDMA CS (circuit switching) territory; Save the whole cost of voice service; At present 3GPP (The 3rd GenerationPartnership Project, third generation partner program) defining based on SIP-I (SIP with ISUPencapsulation, SIP encapsulate ISUP) and H.248 agreement be basic technology.
(the Mobile Switch Central Server of each MSC-S in the basic call business; Mobile Switching Center Server) can take the foundation piecemeal that gateway resource carries out the needed carrying of call business respectively, simultaneously call setup with carry out in the process MSC-S can be according to service needed to calling out and carrying controlled.Wherein call out a plurality of MSC-S of process may take the foundation that different gateways is carried.Can cause taking the long problem that causes degradation aspect under the quality of service of gateway resource waste, bearer path in the practical application.
Set up process based on basic call, shown in Figure 1ly consult and carry the method for foundation based on gateway, comprise following key step based on negotiation result for a kind of:
Step 101; Caller MSC-S selects an available gateway in advance; Transmitting gateway identification (MGW-ID, or also can be called load bearing unit sign BCU-ID) through the SIP-I signaling message then to called MS C-S, indicates caller MSC-S not accomplish the actual of loading end simultaneously and takies in the message.
Step 102; Whether the gateway identification that called MS C-S provides according to caller MSC-S confirms can use the gateway of caller MSC-S selection to set up calling; If could would take this gateway identification institute corresponding gateway resource, if could would select other available gateways and take gateway resource.After called MS C-S completion gateway resource takies gateway identification and carrying attribute are returned to caller MSC-S, wherein, maybe be consistent after called MS C-S takies with the gateway identification that caller MSC-S provides with gateway identification, also maybe be inconsistent; Carry attribute and comprise RTP address, port, available encoding and decoding tabulation etc.
Step 104, called MS C-S returns to caller MSC-S and replys the negotiation of accomplishing SDP and carry foundation what SDP provided.
In the prior art one, initiate carrying foundation and gateway identification and carry out respectively alternately, need repeatedly SDP interacting message, MSC-S needs repeatedly treatment S DP, and it is longer to make the realization complex call set up process time.In addition, there is not appearance how to realize the implementation method of the transmission and the negotiation of gateway identification at present.
Summary of the invention
Method, system and equipment that the embodiment of the invention provides a kind of gateway to select realize that the optimization of carrying is set up process and realized the transmission of gateway identification between MSC-S.
The method that the embodiment of the invention provides a kind of gateway to select comprises:
The 2nd MSC-S receives that a MSC-S sends carries the gateway identification of first gateway that a said MSC-S takies and the message of gateway media information;
When said the 2nd MSC-S can use said first gateway that business is provided, then use said first gateway to set up and carry, and return second gateway identification according to gateway media information, wherein second gateway identification and first gateway identification are the sign of same gateway.
The system that the embodiment of the invention provides a kind of gateway to select comprises:
The one MSC-S, the gateway identification that carries first gateway that said MSC-S takies that is used for sending and the message of gateway media information to the 2nd MSC-S;
The 2nd MSC-S is used to receive the gateway identification that carries first gateway of said MSC-S transmission and the message of gateway media information; In the time can using said first gateway that business is provided, then use said first gateway to set up and carry, and return second gateway identification according to gateway media information, wherein second gateway identification and first gateway identification are the sign of same gateway.
The embodiment of the invention provides a kind of MSC-S, comprising:
Receiving element is used to receive the gateway identification that carries first gateway of other MSC-S transmissions and the message of gateway media information;
Processing unit is used in the time can using said first gateway that business is provided, and then uses said first gateway to set up according to gateway media information and carries, and return second gateway identification, and wherein second gateway identification and first gateway identification are the sign of same gateway.
In the embodiments of the invention, can realize that a plurality of MSC-S take the optimization of same media gateway realization bearer path, save in the practical application and take gateway resource, improve quality of service.
Description of drawings
Fig. 1 is the method flow diagram of consulting based on gateway in the prior art and carrying foundation based on negotiation result;
Fig. 2 is a kind of quick gateway information transmission and a method flow diagram that carry to set up in the embodiment of the invention;
Fig. 3 is that the method flow diagram of setting up is consulted and carried to a kind of gateway in the embodiment of the invention two;
Fig. 4 is the system construction drawing that a kind of gateway is selected in the embodiment of the invention.
Embodiment
The embodiment of the invention one provides a kind of method that foundation was consulted and carried to gateway of carrying out, and is as shown in Figure 2, comprising:
Step 201, a MSC-S selects first an available gateway in advance and accomplishes taking of carrying.
Step 202, gateway identification BCU-ID and beared information (comprising RTP address, port, available encoding and decoding tabulation etc.) that a MSC-S transmits first gateway through the SIP-I signaling message are to the 2nd MSC-S;
Step 203, the 2nd MSC-S selects second an available gateway and accomplishes taking of carrying.Whether the method for wherein selecting second gateway is to confirm can use the gateway of MSC-S selection to set up calling according to the gateway identification that a MSC-S provides; If could second gateway and first gateway would be same gateway, otherwise then select other available gateways and take gateway resource (promptly second gateway and first gateway are different gateways);
Step 204 returns to a MSC-S with gateway identification and carrying attribute (comprising RTP address, port, available encoding and decoding tabulation etc.) after the 2nd MSC-S completion gateway resource takies;
Step 205, a MSC-S revises the distant end media attribute of first gateway and accomplishes the foundation of carrying.
After the 2nd MSC-S completion gateway resource takies gateway identification and carrying attribute (comprising RTP address, port, available encoding and decoding tabulation etc.) are returned to a MSC-S,
In the embodiment of the invention one; Common same MSC can select any one gateway among a plurality of gateways to set up and call out needed carrying; The embodiment of the invention one can use same MGW to set up calling through two MSC of exchange expectation of gateway identification; If the gateway that a MSC selects can not be used then a MSC and the 2nd MSC will take different gateways by the 2nd MSC, can't reach the purpose of the optimization carrying of expectation; Can cause taking the long problem that causes degradation aspect under the quality of service of gateway resource waste, bearer path in the practical application.In order to increase the purpose that two MSC use same MGW, a MSC confirms one the 2nd gateway that MSC is also passable in the time of need before gateway is consulted, selecting first gateway, and this can cause the realization of MSC very complicated.
The method that the embodiment of the invention two provides a kind of gateway to select, as shown in Figure 3, comprise following key step:
Step 301; For process is set up in the optimization that realizes carrying; The one MSC-S (caller MSC-S) receives setup requests (like the SETUP of UE transmission; Perhaps external network or other MSC-S setup requests of sending) after, selects the first available media gateway MGW, distribute and take the media gateway resource of called network alternately with this MGW.
Step 302; The one MSC-S sends sip message (like the INVITE request message) to the 2nd MSC-S (called MS C-S), and this message is carried the gateway identification BCU-ID of WMG and the beared information (comprising RTP address, port, available encoding and decoding tabulation etc.) of the gateway resource that taken.Further, a MSC-S can carry the gateway identification that other MSC-S outside the MGW can be used for the gateway of this calling in said message.
Step 303, the 2nd MSC-S selects second an available gateway and accomplishes taking of carrying.The method of wherein selecting second gateway is that the corresponding gateway of first gateway identification that can be used in this calling of the preferential MSC-S of the selection transmission of the 2nd MSC-S is as second gateway; Perhaps
Whether first gateway identification according to a MSC-S provides confirms can use the gateway of MSC-S selection to set up calling; Then using said first gateway to set up according to gateway media information carries; And return second gateway identification; Wherein second gateway identification and first gateway identification are the sign of same gateway, and second gateway and first gateway are same gateway; Otherwise
The gateway identification of other gateways outside first gateway identification that provides according to a MSC-S is confirmed other gateways that whether can use a MSC-S to use, if could to select this gateway would be second gateway; Otherwise, then select other the 2nd MSC-S can be used for the gateway of this calling.
The 2nd MSC-S distribution also takies gateway resource;
Step 304; The 2nd MSC-S is through sip message (like 183 Temporary Response message or other Temporary Response message to INVITE request), returns the gateway identification of the gateway that the 2nd MSC-S takies and the beared information (comprising RTP address, port, available encoding and decoding tabulation etc.) of gateway resource to a MSC-S.Further, the 2nd MSC-S can also return except the sign of returning second gateway to a MSC-S that other can be used for the sign of the gateway of this calling among the 2nd MSC-S.
Step 305; Receive in the step 304 after the pairing message; As first gateway and second gateway be different gateways then a MSC-S can continue to use first gateway, perhaps discharge the gateway resource that has taken on first gateway and reselect, distribute and take the resource of another one gateway.Wherein reselecting gateway is:
Like second gateway that a MSC-S can use the 2nd MSC-S to take, it is first gateway that a MSC-S selects second gateway; Otherwise:
Can use other gateways outside second gateway that the 2nd MSC-S provides like a MSC-S, then selecting this gateway is first gateway; Otherwise
Then select other MSC-S can be used for the gateway of this calling.
If a MSC-S reselects first gateway, then distribute and take first gateway resource.Further comprise the steps:
Step 306: a MSC-S sends sip message (like the UPDATE request message) to the 2nd MSC-S (called MS C-S), and this message is carried the gateway identification BCU-ID of first gateway of reselecting and the beared information of gateway resource (comprising RTP address, port, available encoding and decoding tabulation etc.).
Step 307: if second gateway that the gateway of the first gateway identification BCU-ID that a MSC-S who carries in step 306 message reselects correspondence and the 2nd MSC-S take is not same gateway; And the gateway that the 2nd MSC-S can use a MSC-S to reselect, simultaneously call setup with carry out in the process MSC-S can be according to service needed to calling out and carrying controlled.Wherein call out a plurality of MSC-S of process may take the foundation that different gateways is carried.Can cause taking the long problem that causes degradation aspect under the quality of service of gateway resource waste, bearer path in the practical application.New first gateway of selecting is set up and is called out then that the 2nd MSC-S can reselect first gateway that a MSC-S reselects, and distribute and take second gateway resource of reselecting, and execution in step 308 and step 309.
Step 308: the 2nd MSC-S returns the beared information of second gateway of resuming to a MSC-S.
Step 309: a MSC-S upgrades the far-end beared information to first gateway after receiving the pairing message of step 308.
Art technology technical staff can derive according to above-mentioned key step and based on the 3GPP CS network correlation technique of SIP-I and include but not limited to some following operation flows:
1, a MSC-S is for providing the visit MSC-S (VMSC) of service for the calling subscriber, and the 2nd MSC-S is for providing the visit MSC-S (VMSC) or the gateway MSC-S (GMSC) of service for the calling subscriber;
2, a MSC-S is gateway MSC-S (GMSC), and the 2nd MSC-S is for providing visit MSC-S (VMSC) or other gateways MSC-S (GMSC) of service for the calling subscriber.
The enforcement of the technical method in the embodiment of the invention needs between MSC-S, to transmit gateway identification BCU-ID and the employed gateway of consultation call.
The embodiment of the invention provides a kind of gateway identification transmission method, comprising:
Second Mobile Switching Center Server receives that first Mobile Switching Center Server sends carries the SDP or the sip message of the gateway identification of said first gateway that said first Mobile Switching Center Server takies; Said second Mobile Switching Center Server returns the SDP or the sip message of the gateway identification of second gateway to said first Mobile Switching Center Server.
Wherein, can use capable user name or the unicast address parameter of o=of SDP to carry, i=is capable, s=is capable or through the capable gateway identification that carries of SDP property parameters a=; Or use the SIP header field to carry gateway identification; Or use sip message body; Wherein the sip message body can adopt ABNF coded system, XML coded system or other coded systems.
The media negotiation that Session Initiation Protocol uses Session Description Protocol (SDP:Session Description Protocol) to carry out session uses SDP to carry out the media negotiation of session and the foundation of carrying based on the 3GPP CS network of SIP-I.The SDP agreement has characteristic of simple and in the communications field, has obtained using widely.Simultaneously SDP has characteristics such as easy expansion, and the entity of not supporting the SDP expansion can be ignored the expansion that can not discern and not influence the function of setting up of basic session.Therefore the SDP agreement is carried out appropriate expansion and defines realizing gateway identification transmission and negotiation.
Transmit gateway identification BCU-ID and the employed gateway of consultation call based on SDP, consulting and carrying step 101, step 102 in the method for foundation based on gateway, carrying out that gateway is consulted and step 302, step 304, step 306, the step 308 of carrying in step 202, step 204 and the implementation of the present invention in the method for setting up can adopt any transmission method in the following implementation 1～8 based on negotiation result:
1, username (user name) parameter that the o=of SDP is capable is used to transmit SDP sender's username information, in based on the Multimedia session of multicast, can help SDP recipient decision whether to add Multimedia session.In non-multicast multimedia conversation business or system (particularly based on SIP-I 3GPP CS network), do not use this parameter temporarily.Adopt this mode, need not newly-increased parameter, few to the change of agreement, realize more conveniently, simultaneously because do not take, can not use any influence of generation to the SIP that does not use MGW-ID to the influential parameter of Business Processing.Carry BCU-ID through the capable username of the o=of SDP (user name) parameter.As:
v＝0
o＝BCU-ID:mgw1.orig-cs.net；mgw2.orig-cs.net?98789736?90842807IN?IP4?msc1.orig-cs.net
s＝-
c＝IN?IP4192.168.1.2
t＝00
m＝audio?49170RTP/AVP?0
The username that wherein o=is capable begins to represent that this parameter remainder content is BCU-ID with " BCU-ID: ", perhaps also can adopt the mode of arranging between the MSC-S to represent that these parameter all the elements are that BCU-ID need not " BCU-ID: " beginning label.Like the o=behavior:
o＝mgw1.orig-cs.net；mgw2.orig-cs.net?98789736?90842807?IN?IP4msc1.orig-cs.net
When carrying a plurality of BCU-ID between the BCU-ID with "; " or other modes separate.
2, unicast-address (unicast address) parameter that the o=of SDP is capable is used to transmit SDP sender's address information, in based on the Multimedia session of multicast, can help SDP recipient decision whether to add Multimedia session.In non-multicast multimedia conversation business or system (particularly based on SIP-I 3GPP CS network), do not use this parameter temporarily.Adopt this mode, need not newly-increased parameter, few to the change of agreement, realize more conveniently, simultaneously because do not take, can not use any influence of generation to the SIP that does not use MGW-ID to the influential parameter of Business Processing.Carry BCU-ID through the capable unicast-address of the o=of SDP (unicast address) parameter.As:
v＝0
o＝-3498789736?2890842807?IN?IP4?mgw1.orig-cs.net
s＝-
c＝IN?IP4?192.168.1.2
t＝00
m＝audio?49170RTP/AVP?0
3, the capable subject information that is used to transmit session of the s=of SDP can help SDP recipient decision whether to add Multimedia session in based on the Multimedia session of multicast.In non-multicast multimedia conversation business or system (particularly based on SIP-I 3GPP CS network), do not use this parameter temporarily.Adopt this mode, need not newly-increased parameter, few to the change of agreement, realize more conveniently, simultaneously because do not take, can not use any influence of generation to the SIP that does not use MGW-ID to the influential parameter of Business Processing.The capable BCU-ID that carries of s=through SDP.As:
v＝0
o＝-3498789736?2890842807?IN?IP4?192.168.1.2
s＝BCU-ID:mgw1.orig-cs.net；mgw2.orig-cs.net
c＝IN?IP4192.168.1.2
t＝00
m＝audio?49170RTP/AVP?0
Wherein s=is capable begins to represent that this parameter remainder content is BCU-ID with " BCU-ID: ", perhaps also can adopt the mode of arranging between the MSC-S to represent that these parameter all the elements are that BCU-ID need not " BCU-ID: " beginning label.Like the s=behavior:
s＝mgw1.orig-cs.net；mgw2.orig-cs.net
When carrying a plurality of BCU-ID between the BCU-ID with "; " or other modes separate.
4, the capable additional textual information that is used to transmit session of the i=of SDP can help SDP recipient decision whether to add Multimedia session in based on the Multimedia session of multicast.In non-multicast multimedia conversation business or system (particularly based on SIP-I 3GPP CS network), do not use this parameter temporarily.Adopt this mode, need not newly-increased parameter, few to the change of agreement, realize more conveniently, simultaneously because do not take, can not use any influence of generation to the SIP that does not use MGW-ID to the influential parameter of Business Processing.The capable BCU-ID that carries of i=through SDP.As:
v＝0
o＝-3498789736?2890842807?IN?IP4?192.168.1.2
s＝-
i＝BCU-ID:mgw1.orig-cs.net，mgw2.orig-cs.net
c＝IN?IP4?192.168.1.2
t＝00
m＝audio?49170?RTP/AVP0
Wherein i=is capable begins to represent that this parameter remainder content is BCU-ID with " BCU-ID: ", perhaps also can adopt the mode of arranging between the MSC-S to represent that these parameter all the elements are that BCU-ID need not " BCU-ID: " beginning label.Like the i=behavior:
i＝mgw1.orig-cs.net；mgw2.orig-cs.net
When carrying a plurality of BCU-ID between the BCU-ID with "; " or other modes separate.
5, the capable various attribute informations that are used for session or medium of the a=of SDP, every kind of attribute information identifies through Property Name.Adopt this mode because do not take, can not use and produce any influence the SIP that does not use MGW-ID to the influential parameter of Business Processing.The capable BCU-ID attribute that carries of property parameters a=through SDP transmits BCU-ID.As:
v＝0
o＝-3498789736?2890842807?IN?IP4?192.168.1.2
s＝-
a＝BCU-ID:mgw1.orig-cs.net，mgw2.orig-cs.net
c＝IN?IP4?192.168.1.2
t＝00
m＝audio?49170?RTP/AVP?0
Calling, session, the service control functions such as foundation, modification and termination that use Session Initiation Protocol to carry out session based on the 3GPP CS network of SIP-I.Session Initiation Protocol has characteristics such as easy expansion, and the SIP entity is ignored unsupported SIP header field, message body can not influence basic SIP calling and conversation control function.Therefore Session Initiation Protocol is carried out appropriate expansion and defines realizing gateway identification transmission and negotiation.Adopt this mode because do not take, can not use and produce any influence the SIP that does not use MGW-ID to the influential parameter of Business Processing.
6, carry through the SIP header field, as in sip message, comprising following header field:
BCU-ID:mgw1.orig-cs.net，mgw2.orig-cs.net
7, carry through the sip message body, wherein message body is used the ABNF coding, as in sip message, comprising the header field of following expression message body type:
Content-Type:application/available-BCU-ID
And corresponding message body as:
mgw1.orig-cs.net
mgw2.orig-cs.net
8, carry through the sip message body, wherein message body is used the XML coded system, as in sip message, comprising the header field of following expression message body type:
Content-Type:application/available-BCU-ID+xml
And corresponding message body as:
<available-mgw>
<mgw?name＝”mgw1.orig-cs.net”/>
<mgw?name＝”mgw2.orig-cs.net”/>
</available-mgw>
Suppose that wherein a MSC-S can use mgw1.orig-cs.net and mgw2.orig-cs.net to carry out the foundation of call bearer, further a MSC-S has taken the gateway that is designated mgw1.orig-cs.net and has carried out the foundation of call bearer in the embodiment of the invention one and the embodiment of the invention two.
Wherein consult based on gateway and then do not comprise beared information among the SDP when carrying step 101, the step 102 of the method for foundation as adopting as above 1～5 method based on negotiation result, the m=among the corresponding SDP is capable of being:
m＝audio?0?RTP/AVP?0
The expression beared information wouldn't be available, and perhaps c=is capable of being:
c＝IN?IP40.0.0.0
The expression beared information wouldn't be available, or alternate manner representes that beared information wouldn't be available.
Can use mgw1.term-cs.net and mgw2.term-cs.net to carry out the foundation of call bearer like the 2nd MSC-S; Mgw1.term-cs.net and mgw1.orig-cs.net are the different identification of same gateway simultaneously; Be any in above-mentioned 1～8 mode then when consulting and carrying step 101 in the method for foundation, step 202 and the step 302 in the implementation of the present invention in the embodiment of the invention one, gateway information transmission method in the step 306 based on gateway based on negotiation result; Then according to as above gateway identification transmission method, based on gateway consult and carry step 102 in the method for foundation, step 204 and the step 304 in the embodiment of the invention two in the embodiment of the invention one based on negotiation result, gateway information in the step 308 can be respectively as the content of the correspondence in 1 '～8 ':
1 ', carry BCU-ID through the capable username of the o=of SDP (user name) parameter.As:
v＝0
o＝BCU-ID:mgw1.term-cs.net；mgw2.term-cs.net?98789736?90842807IN?IP4?msc1.term-cs.net
s＝-
c＝IN?IP4?192.168.10.2
t＝00
m＝audio?10000RTP/AVP?0
2 ', carry BCU-ID through the capable unicast-address of the o=of SDP (unicast address) parameter.As:
v＝0
o＝-98789736?90842807IN?IP4mgw1.term-cs.net:mgw2.term-cs.net
s＝-
c＝IN?IP4?192.168.10.2
t＝00
m＝audio?10000RTP/AVP?0
3 ', the capable BCU-ID that carries of s=through SDP.As:
v＝0
o＝-98789736?90842807IN?IP4192.168.1.2
s＝BCU-ID:mgw1.term-cs.net；mgw2.term-cs.net
c＝IN?IP4?192.168.10.2
t＝00
m＝audio?10000RTP/AVP?0
4 ', the capable BCU-ID that carries of i=through SDP.As:
v＝0
o＝-98789736?90842807IN?IP4?192.168.1.2
s＝-
i＝BCU-ID:mgw1.term-cs.net，mgw2.term-cs.net
c＝IN?IP4?192.168.10.2
t＝00
m＝audio?10000RTP/AVP?0
5 ', the capable BCU-ID that carries of property parameters a=through SDP.As:
v＝0
o＝-98789736?90842807IN?IP4?192.168.1.2
s＝-
a＝BCU-ID:mgw1.term-cs.net，mgw2.term-cs.net
c＝IN?IP4192.168.10.2
t＝00
m＝audio?10000?RTP/AVP?0
6 ', carry through the SIP header field, as in sip message, comprising following header field:
BCU-ID:mgw1.term-cs.net，mgw2.term-cs.net
7 ', carry through the sip message body, wherein message body is used the ABNF coding, as in sip message, comprising the header field of following expression message body type:
Content-Type:application/available-BCU-ID
And corresponding message body as:
mgw1.term-cs.net
mgw2.term-cs.net
8 ', carry through the sip message body, wherein message body is used the XML coded system, as in sip message, comprising the header field of following expression message body type:
Content-Type:application/available-BCU-ID+xml
And corresponding message body as:
<available-mgw>
<mgw?name＝”mgw1.term-cs.net”/>
<mgw?name＝”mgw2.term-cs.net”/>
</available-mgw>
Use same sign to identify (as adopting mgw1.orig-cs.net equally for the mgw1.term-cs.net shown in 1 '～8 ') like a MSC-S and the 2nd MSC-S to same MGW, then a MSC-S and the 2nd MSC-S need not confirm local corresponding gateway identification according to the BCU-ID that the opposite end passes over.Above-mentioned implementation method is also simpler.Mgw1.term-cs.net shown in corresponding 1 '～8 ' only need replace with mgw1.orig-cs.net and get final product.
The system that the embodiment of the invention provides a kind of gateway to select, as shown in Figure 4, comprising: a MSC-S100, the gateway identification that carries first gateway that a said MSc-S100 takies that is used for sending and the message of gateway media information to the 2nd MSC-S200; The 2nd MSC-S200 is used to receive the gateway identification that carries first gateway of said first Mobile Switching Center Server 100 transmissions and the message of gateway media information; In the time can using said first gateway that business is provided, then use said first gateway to set up and carry, and return second gateway identification according to gateway media information, wherein second gateway identification and first gateway identification are the sign of same gateway.
Said the 2nd MSC-S200 specifically comprises: receiving element 210 is used to receive the gateway identification that carries first gateway of other MSC-S transmissions and the message of gateway media information; Processing unit 220; Be used in the time can using said first gateway that business is provided; Then use said first gateway to set up according to gateway media information and carry, and return second gateway identification, wherein second gateway identification and first gateway identification are the sign of same gateway.
A said MSc-S100 specifically comprises: transmitting element 110, the gateway identification that carries first gateway that a said MSC-S takies that is used for sending to the 2nd MSC-S and the message of gateway media information.Processing unit 120 after being used to receive the sign of second gateway, determines whether to use second gateway to provide professional, if could would discharge taking of first gateway, and reuse second gateway according to gateway media information and set up and carry; If a MSC-S can use other gateways outside second gateway that the 2nd MSC-S provides, then selecting this gateway is first gateway, otherwise then selects to reselect other available gateways.
The embodiment of the invention also provides a kind of MSC-S, comprising: receiving element is used to receive the gateway identification that carries first gateway of other MSC-S transmissions and the message of gateway media information; Processing unit is used in the time can using said first gateway that business is provided, and then uses said first gateway to set up according to gateway media information and carries, and return second gateway identification, and wherein second gateway identification and first gateway identification are the sign of same gateway.
Said processing unit; MSC-S also is used for when cannot use first gateway that business is provided; Select second gateway; And return the gateway identification of second gateway and the message of gateway media information, and wherein, the preferential second corresponding gateway of the gateway identification that can be used in this calling of selecting first gateway to send of said second gateway.
In the embodiments of the invention, can realize that a plurality of MSC-S take the optimization of same media gateway realization bearer path, avoid repeatedly SDP mutual, reduce number of times, implementation complexity and the speed call of MSC-S treatment S DP and set up process.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention perhaps contributes in essence can be come out with the embodied of software product; This computer software product is stored in the storage medium; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (11)
1. the method that gateway is selected is characterized in that, comprising:
Second mobile switching center server MSC-S receives that a MSC-S sends carries the gateway identification of first gateway that a said MSC-S takies and the message of gateway media information;
When said the 2nd MSC-S can use said first gateway that business is provided, then use said first gateway to set up and carry, and return second gateway identification according to gateway media information, wherein second gateway identification and first gateway identification are the sign of same gateway;
Said the 2nd MSC-S receives in the message that a said MSC-S sends, and carries the gateway identification that other MSC-S outside first gateway can be used in the gateway of this calling;
When said the 2nd MSC-S cannot use first gateway that business is provided, select other gateways as second gateway, and return the gateway identification of said second gateway and the message of gateway media information to a MSC-S.
2. the method selected of gateway according to claim 1 is characterized in that other MSC-S outside first gateway that the preferential MSC-S of selection of said the 2nd MSC-S sends can be used in the corresponding gateway of gateway identification of this calling.
3. the method selected of gateway according to claim 1 is characterized in that, also comprises:
The 2nd MSC-S also returns the sign that other the 2nd MSC-S can be used in the gateway of this calling to a MSC-S except the sign of returning second gateway.
4. like the method for claim 2 or 3 said gateways selections, it is characterized in that, when the 2nd MSC-S cannot use first gateway that business is provided, when selecting other gateways as second gateway,
A said MSC-S determines whether to use second gateway to provide professional after receiving the sign of second gateway, if could would discharge taking of first gateway, and reuse second gateway according to gateway media information and set up and carry.
5. the method for selecting like the said gateway of claim 4; It is characterized in that; Also comprise: when a said MSC-S can not use second gateway; And the 2nd MSC-S is when a MSC-S also returns other the 2nd MSC-S and can be used in the sign of gateway of this calling except the sign of returning second gateway
If a MSC-S can use other gateways outside second gateway that the 2nd MSC-S provides, then selecting this gateway is first gateway, otherwise reselects the gateway that other MSC-S can use.
6. the method for selecting like each said gateway in the claim 1 to 5 is characterized in that the said message mode that carries gateway identification and gateway media information comprises:
Use the o=of SDP capable user name or unicast address parameter, i=is capable, s=is capable or the capable gateway identification that carries of SDP property parameters a=; Perhaps
Use the SIP header field to carry gateway identification; Perhaps
Use the sip message body to carry gateway identification, wherein message body is used the ABNF coding.
7. the system that gateway is selected is characterized in that, comprising:
The one MSC-S is used for sending the gateway identification carry first gateway that a said MSC-S takies and the message of gateway media information to the 2nd MSC-S;
The 2nd MSC-S is used to receive the gateway identification that carries first gateway of said MSC-S transmission and the message of gateway media information; In the time can using said first gateway that business is provided, then use said first gateway to set up and carry, and return second gateway identification according to gateway media information, wherein second gateway identification and first gateway identification are the sign of same gateway; Said the 2nd MSC-S receives in the message that a said MSC-S sends, and carries the gateway identification that other MSC-S outside first gateway can be used in the gateway of this calling; When said the 2nd MSC-S cannot use first gateway that business is provided, select other gateways as second gateway, and return the gateway identification of said second gateway and the message of gateway media information to a MSC-S.
8. the system of selecting like the said gateway of claim 7 is characterized in that said the 2nd MSC-S specifically comprises:
Receiving element is used to receive the gateway identification that carries first gateway of other MSC-S transmissions and the message of gateway media information;
Processing unit is used in the time can using said first gateway that business is provided, and then uses said first gateway to set up according to gateway media information and carries, and return second gateway identification, and wherein second gateway identification and first gateway identification are the sign of same gateway.
9. the system of selecting like the said gateway of claim 7 is characterized in that a said MSC-S specifically comprises:
Transmitting element is used for sending the gateway identification carry first gateway that a said MSC-S takies and the message of gateway media information to the 2nd MSC-S.
10. the system of selecting like the said gateway of claim 9 is characterized in that a said MSC-S also comprises:
Processing unit after being used to receive the sign of second gateway, determines whether to use second gateway to provide professional, if could would discharge taking of first gateway, and reuse second gateway according to gateway media information and set up and carry; Otherwise,
If a MSC-S can use other gateways outside second gateway that the 2nd MSC-S provides, then selecting this gateway is first gateway, otherwise,
Then select to reselect the gateway that other MSC-S can use.
11. a MSC-S is characterized in that, comprising:
Receiving element is used to receive the gateway identification that carries first gateway of other MSC-S transmissions and the message of gateway media information;
Processing unit is used in the time can using said first gateway that business is provided, and then uses said first gateway to set up according to gateway media information and carries, and return second gateway identification, and wherein second gateway identification and first gateway identification are the sign of same gateway;
Said processing unit; MSC-S also is used for when cannot use first gateway that business is provided; Select second gateway; And return the gateway identification of second gateway and the message of gateway media information, and wherein, the preferential second corresponding gateway of the gateway identification that can be used in this calling of selecting first gateway to send of said second gateway.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810089724 CN101553042B (en) | 2008-04-03 | 2008-04-03 | Method, system and equipment for selecting gateway |
| PCT/CN2009/071160 WO2009121310A1 (en) | 2008-04-03 | 2009-04-03 | Method, system and device for selecting a gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810089724 CN101553042B (en) | 2008-04-03 | 2008-04-03 | Method, system and equipment for selecting gateway |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101553042A CN101553042A (en) | 2009-10-07 |
| CN101553042B true CN101553042B (en) | 2012-05-23 |
Family
ID=41134857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810089724 Active CN101553042B (en) | 2008-04-03 | 2008-04-03 | Method, system and equipment for selecting gateway |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101553042B (en) |
| WO (1) | WO2009121310A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065406B (en) * | 2009-11-12 | 2014-04-09 | 中兴通讯股份有限公司 | Implementation method for local switch of local call |
| CN102104979B (en) * | 2009-12-22 | 2014-02-19 | 华为技术有限公司 | Method, device and system for establishing local exchange |
| CN104320502B (en) * | 2014-11-14 | 2017-11-24 | 大唐移动通信设备有限公司 | Terminating gateway IP address distribution method, the method for data transfer, MME and system |
| CN109257323B (en) * | 2017-07-14 | 2022-03-08 | 中兴通讯股份有限公司 | Call method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1882120A (en) * | 2005-11-28 | 2006-12-20 | 华为技术有限公司 | Wireless network end office and call switching method |
| CN1996971A (en) * | 2006-12-14 | 2007-07-11 | 华为技术有限公司 | Method and system for the virtual media gateway to optimize the network connection |
| EP1639784B1 (en) * | 2003-06-19 | 2007-12-05 | Telefonaktiebolaget LM Ericsson (publ) | Conversational bearer negotiation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101005633B (en) * | 2006-07-21 | 2010-07-21 | 华为技术有限公司 | Method and system for realizing mobile exchange central pool |
-
2008
- 2008-04-03 CN CN 200810089724 patent/CN101553042B/en active Active
-
2009
- 2009-04-03 WO PCT/CN2009/071160 patent/WO2009121310A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1639784B1 (en) * | 2003-06-19 | 2007-12-05 | Telefonaktiebolaget LM Ericsson (publ) | Conversational bearer negotiation |
| CN1882120A (en) * | 2005-11-28 | 2006-12-20 | 华为技术有限公司 | Wireless network end office and call switching method |
| WO2007059668A1 (en) * | 2005-11-28 | 2007-05-31 | Huawei Technologies Co., Ltd. | Wireless network terminal office and method for connecting a call |
| CN1996971A (en) * | 2006-12-14 | 2007-07-11 | 华为技术有限公司 | Method and system for the virtual media gateway to optimize the network connection |
Non-Patent Citations (1)
| Title |
|---|
| LM Ericsson.MGW Selection/Bearer Establishment Models in SIP-I.《3GPP TSG CT WG4 Meeting #36bis》.2007,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101553042A (en) | 2009-10-07 |
| WO2009121310A1 (en) | 2009-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1534972B (en) | Fast netowrk STD/SDP procedure used for conference junction according to user's inquiry for optimizing netowrk resource | |
| EP2052522B1 (en) | Interworking with media fallback | |
| CN101242663B (en) | Switching method, system and device for call between mobile terminal and soft terminal with same number | |
| CN101884205B (en) | Dynamic initiation of i1-ps signaling in ims centralized services | |
| US20060203802A1 (en) | Method and system for dynamically specifying and instantly transmitting and representing/displaying call data | |
| CN101316435A (en) | Call control method and IMS circuit switching control device and terminal unit | |
| CN101409865A (en) | Method for implementing color bell intercommunication, control equipment and application server for multimedia gateway | |
| CN102387267B (en) | Convergence calling method and system | |
| CN101374256A (en) | Method, apparatus and system processing session medium stream succession | |
| CN102171985A (en) | Session establishment in a communication network | |
| CN111049995A (en) | Method and related device for controlling video color ring in call | |
| CN101662738A (en) | Method, device and system for playing multimedia coloring ring back tone | |
| CN101553042B (en) | Method, system and equipment for selecting gateway | |
| CN101114985B (en) | Coding/decoding transition system and method | |
| CN101459970B (en) | Method, system and apparatus for media type changing | |
| CN101325590B (en) | Method for implementation terminal call of IP multimedia subsystem central control business | |
| CN101155173B (en) | Method and system for circuit field sensing IMS field multimedia conversation media information | |
| CN101111003B (en) | Multimedia color ring system and its play method | |
| CN105391876A (en) | Method and device for providing media services for communication | |
| CN101146247B (en) | Method for providing mobile network with value-added service | |
| CN101031139B (en) | Method for controlling call entity release session | |
| CN102833715B (en) | Inquisition switching implementation method, application server, business terminal and system | |
| CN103428781B (en) | A kind of method and system of IP voice call switching, user equipment | |
| CN101471860B (en) | Method, system and equipment for selecting call arbitration node by soft switching equipment | |
| CN101491070A (en) | System and method for realizing colorful ring back tone service in 3g ip multimedia subsystem network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |