CN101808352B - Method for realizing double-ownership switching of single trunking gateway in next generation of network - Google Patents
Method for realizing double-ownership switching of single trunking gateway in next generation of network Download PDFInfo
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- CN101808352B CN101808352B CN 200910046211 CN200910046211A CN101808352B CN 101808352 B CN101808352 B CN 101808352B CN 200910046211 CN200910046211 CN 200910046211 CN 200910046211 A CN200910046211 A CN 200910046211A CN 101808352 B CN101808352 B CN 101808352B
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Abstract
The invention relates to a method for realizing the double-ownership switching of a single trunking gateway in next generation of network; the next generation of network comprises a media gateway controller, a trunking gateway and a signaling gateway; each trunking gateway is controlled by a main mediate gateway controller or a standby media gateway controller; the method comprises the following steps that: a link set is established between the main media gateway controller and the standby media gateway controller; the connection between each trunking gateway and the main media gateway controller is detected; when the disconnection of a connection is detected, the trunking gateway requests to register to the standby media gateway controller; the main media gateway controller instructs exchange equipment to block a relay circuit of the trunking gateway; the standby media gateway controller and the main media gateway controller revise and exchange the registration information; and according to the registration information, the relay circuit of the trunking gateway is reset, so that the standby media gateway controller controls the subsequent calls through the trunking gateway. The method can realize the double-ownership switching of the single trunking gateway, and provide services with higher safety and quality.
Description
Technical field
The present invention relates to the fault-toleranr technique of next generation network, particularly, relate to when certain Tandem Gateway this Tandem Gateway when IP between the primary Media Gateway Controller is connected fault and switch to the method for standby media gateway controller and corresponding Media Gateway Controller from primary Media Gateway Controller.
Background technology
In next generation network, especially in the next generation network (NGN) of 4 classes professional (class 4), Media Gateway Controller adopts the 1+1 redundant configuration usually, namely two Media Gateway Controllers match each other standby usage, and each Media Gateway Controller is controlled a plurality of Tandem Gateways.Like this, when certain Media Gateway Controller broke down, its pairing Media Gateway Controller can replace this Media Gateway Controller to carry out work, thereby ensures execution professional in the network.
Fig. 1 shows an example of present next generation network.As shown in Figure 1, media gateway controller MGC 1 and MGC2 be active and standby land used control Tandem Gateway TGW1-1, TGW1-2, TGW2-1 and TGW2-2 each other, wherein, the primary Media Gateway Controller of Tandem Gateway TGW1-1 and TGW1-2 is MGC1, standby media gateway controller is MGC2, and the primary Media Gateway Controller of Tandem Gateway TGW2-1 and TGW2-2 is MGC2, and standby media gateway controller is MGC1.In Fig. 1, dotted line represents that the connection between Tandem Gateway and the Media Gateway Controller is connection for subsequent use.In order to realize the 1+1 redundant configuration, each Media Gateway Controller backs up the call treatment data of pairing Media Gateway Controller, comprises Tandem Gateway tabulation, relaying tabulation, route data and signalling system No.7 point coding.
Between Media Gateway Controller and the Tandem Gateway controlled by protocol communication H.248.When certain Tandem Gateway finds that the Media Gateway Controller of its registration is unavailable, this Tandem Gateway will be transferred to another Media Gateway Controller.Tandem Gateway can be by its registration of heartbeat detection message detection in the agreement H.248 the availability of Media Gateway Controller.
In addition, media gateway controller MGC 1 and MGC2 pass through as the Signalling Transfer Point STP1 of SGW and the switching equipment 1 of STP2 and public switch telephone network (PSTN), ..., N carries out the transmission of signaling message, and uses signalling system No.7 to communicate by letter with these switching equipment.The signaling point code of media gateway controller MGC 1 is SPC1, and the signaling point code of media gateway controller MGC 2 is SPC2.Because media gateway controller MGC 1 and MGC2 be standby usage each other, therefore, media controller MGC1 also has signaling point code SPC2, and media controller MGC2 also has signaling point code SPC1.Like this, Signalling Transfer Point STP1 and STP2 have to the link set of media gateway controller MGC 1 and MGC2, namely from link set LS1-1 and the LS1-2 of Signalling Transfer Point STP1, from link set LS2-1 and the LS2-2 of Signalling Transfer Point STP2.Have to the routing table of destination signaling point SPC1 and SPC2 at Signalling Transfer Point STP1 and STP2, as follows:
| Signalling Transfer Point | Destination signaling point | The high priority route | The low priority route |
| STP1 | SPC1 | LS1-1 | LS1-2 |
| STP1 | SPC2 | LS1-2 | LS1-1 |
| STP2 | SPC1 | LS2-1 | LS2-2 |
| STP2 | SPC2 | LS2-2 | LS2-1 |
For example, when media gateway controller MGC 1 breaks down, link set LS1-1 and LS2-1 disconnect, Signalling Transfer Point STP1 and STP2 will use link set LS1-2 and LS2-2 to send signaling message to purpose SPC1, like this, originally from switching equipment 1 ..., N will send to media gateway controller MGC 2 by link set LS1-2 and LS2-2 to the isup message of media gateway controller MGC 1, thereby make media gateway controller MGC 2 replace media gateway controller MGC 1 to manage business.
Between media gateway controller MGC 1 and MGC 2, also there is the heartbeat detection link, is used for detecting separately the availability of pairing Media Gateway Controller.Usually, this heartbeat detection is by the realization of IP agreement, for example session initiation protocol.
Fig. 2 shows when Media Gateway Controller breaks down Tandem Gateway switches to the pairing Media Gateway Controller from the current media gateway controller schematic diagram.As shown in Figure 2, when certain Media Gateway Controller breaks down, MGC1 for example, then the master control Tandem Gateway TGW1-1 of media gateway controller MGC 1 and TGW1-2 will switch to standby media gateway controller MGC2.The below is take Tandem Gateway TGW1-1 as example brief description handoff procedure.When relaying gateway TGW1-1 found that by heartbeat detection media gateway controller MGC 1 is unavailable, it sent registration requests to media gateway controller MGC 2.Media gateway controller MGC 2 also finds that by heartbeat detection media gateway controller MGC 1 is unavailable when receiving registration request, then accept registration request, and activates the call treatment data of the media controller MGC1 that backs up.And the signaling message that originally mail to media gateway controller MGC 1 sends to media gateway controller MGC 2 by link set LS1-2 and LS2-2, thereby by the calling of media gateway controller MGC 2 processing via Tandem Gateway TGW1-1.Thus, Tandem Gateway TGW1-1 switches to media gateway controller MGC 2.Equally, Tandem Gateway TGW1-2 also switches to media gateway controller MGC 2.
Fig. 3 shows when certain Tandem Gateway is connected with IP between the Media Gateway Controller and disconnects and this Media Gateway Controller schematic diagram that this Tandem Gateway switches when not having fault, and wherein arrow represents the transmission direction of signaling message.As shown in Figure 3, when the IP between media gateway controller MGC 1 and the Tandem Gateway TGW1-1 connects disconnection, it is unavailable that Tandem Gateway TGW1-1 and media gateway controller MGC 1 all detect the other side, then Tandem Gateway TGW1-1 sends registration request to media gateway controller MGC 2, media gateway controller MGC 1 is asked switching equipment 1 simultaneously, ..., N blocks the repeat circuit on the Tandem Gateway TGW1-1.Media gateway controller MGC 2 is accepted this registration request, adopt signaling point code SPC1 by link set LS1-2 and LS2-2 to switching equipment 1 ..., N sends reset circuit message with request switching equipment 1 ..., N discharges the repeat circuit on the Tandem Gateway TGW1-1.Because media gateway controller MGC 1 is still available, therefore, switching equipment 1 ..., N sends to media gateway controller MGC 1 to the affirmation message of the reset circuit that destination signaling point SPC1 sends by link set LS1-1 and LS2-1, and media gateway controller MGC 2 can not be received this acknowledge message.When switching equipment 1 ..., when N used Tandem Gateway TGW1-1 to call out, relevant isup message was sent to media gateway controller MGC 1 equally, thereby causes call failure.Therefore, Tandem Gateway TGW1-1 does not successfully switch in fact media gateway controller MGC 2.
For avoiding the situation of above-mentioned call failure, in existing Tandem Gateway handoff procedure, Media Gateway Controller is only detecting the unavailable rear registration request of just accepting from Tandem Gateway of pairing Media Gateway Controller.For situation as shown in Figure 3, Tandem Gateway TGW1-1 sends registration request to media gateway controller MGC 2, and media gateway controller MGC 2 detection media gateway controller MGC 1 can be used, and therefore do not accept the registration request of Tandem Gateway TGW1-1.Simultaneously, media gateway controller MGC 1 is to switching equipment 1 ..., N sends request to block the repeat circuit on the Tandem Gateway TGW1-1.Like this, switching equipment 1 ..., N can't call out by Tandem Gateway TGW1-1.Unavailable because the repeat circuit on the Tandem Gateway TGW1-1 gets clogged, therefore, cause easily the congested of repeat circuit on other Tandem Gateway.
Therefore, prior art can not be connected at certain Tandem Gateway the dual-homed switching of this single Tandem Gateway of realization in the situation about disconnecting with the IP between the Media Gateway Controller.
Summary of the invention
The present invention just is being based on above-mentioned technical problem and is proposing, its purpose is to provide a kind of method and corresponding Media Gateway Controller of realizing the dual-homed switching of single Tandem Gateway in next generation network, so that single Tandem Gateway can automatically switch to standby media gateway controller when IP between the primary Media Gateway Controller is connected disconnection at this Tandem Gateway.
According to an aspect of the present invention, a kind of method that realizes the dual-homed switching of single Tandem Gateway in next generation network is provided, described next generation network comprises a plurality of Media Gateway Controllers, a plurality of Tandem Gateways and a plurality of SGW, wherein said a plurality of Media Gateway Controller carries out signaling via described a plurality of SGWs with the switching equipment of public switch telephone network and communicates by letter, and each of described a plurality of Tandem Gateways is by the control of primary Media Gateway Controller or standby media gateway controller, and described method comprises: described a plurality of Tandem Gateways each primary Media Gateway Controller and standby media gateway controller between set up link set; Detect the connection between each of described a plurality of Tandem Gateways and the primary Media Gateway Controller separately; When detecting when disconnecting being connected between certain Tandem Gateway and its primary Media Gateway Controller, described Tandem Gateway is to the standby media gateway controller request registration; Described primary Media Gateway Controller indicates described switching equipment to block the repeat circuit of described Tandem Gateway via described SGW; Described standby media gateway controller and described primary media gateway controller revise also exchange the log-on message of described Tandem Gateway; And according to described log-on message, the repeat circuit of the described Tandem Gateway of resetting is so that the described standby media gateway controller control calling via described Tandem Gateway subsequently.
According to another aspect of the present invention, a kind of Media Gateway Controller that uses in next generation network is provided, it carries out signaling via a plurality of SGWs in the described next generation network with the switching equipment of public switch telephone network and communicates by letter, and form the standby usage Media Gateway Controller with the pairing of another Media Gateway Controller, described Media Gateway Controller comprises: the link set apparatus for establishing, be used for and the pairing Media Gateway Controller between set up link set; Checkout gear is for detection of the availability of Tandem Gateway; The request receiving device is used for receiving the registration request from Tandem Gateway; Block indicating device, be used for indicating described switching equipment to block the repeat circuit of Tandem Gateway via described SGW; Log-on message is revised and switch, is used for revising the log-on message of Tandem Gateway, and exchanges described log-on message with described pairing Media Gateway Controller; And reset apparatus, for the repeat circuit of replacement Tandem Gateway.
Description of drawings
Fig. 1 is the schematic diagram of existing next generation network;
Fig. 2 be in the prior art when Media Gateway Controller breaks down Tandem Gateway switch to the pairing Media Gateway Controller schematic diagram;
Fig. 3 disconnects and this Media Gateway Controller schematic diagram that this Tandem Gateway switches when not having fault when certain Tandem Gateway is connected with IP between the Media Gateway Controller in the prior art;
Fig. 4 is the flow chart of realizing the method for the dual-homed switching of single Tandem Gateway in next generation network according to an embodiment of the invention;
Fig. 5 is the schematic diagram that uses method shown in Figure 4 to carry out the dual-homed switching of Tandem Gateway at certain Tandem Gateway when IP between the Media Gateway Controller is connected disconnection;
Fig. 6 is the flow chart of the method for the dual-homed switching of single Tandem Gateway that realizes in next generation network according to another embodiment of the invention;
Fig. 7 is the schematic block diagram of the Media Gateway Controller that uses in next generation network according to an embodiment of the invention.
Embodiment
Believe that by below in conjunction with the detailed description of accompanying drawing to specific embodiments of the invention, above and other objects of the present invention, feature and advantage will be more obvious.
Fig. 4 is the flow chart of realizing the method for the dual-homed switching of single Tandem Gateway in next generation network according to an embodiment of the invention.Below in conjunction with accompanying drawing, present embodiment is described in detail.
As everyone knows, next generation network (NGN) is the network that the multimedia integration business such as speech, video, data are provided take soft switch as core.Usually, next generation network comprises Media Gateway Controller, Tandem Gateway and SGW etc.Media Gateway Controller mainly is responsible for signaling and is called out control, and Tandem Gateway and SGW are for the equipment of realizing next generation network and public switch telephone network intercommunication, it is positioned at the edge access layer of next generation network, connect public switch telephone network and next generation network, wherein Tandem Gateway is realized the switching of repeat circuit (TDM) and IP bag, SGW mainly carries out relaying, translation and finalization process to signaling message, is implemented in and transmits signalling system No.7 message in the next generation network.Certainly, also comprise miscellaneous equipment in the next generation network, do not repeat them here.
In the next generation network of present embodiment, a Media Gateway Controller is controlled a plurality of Tandem Gateways, and each Tandem Gateway has primary Media Gateway Controller and standby media gateway controller, be that Media Gateway Controller adopts the 1+1 redundant configuration, and each Media Gateway Controller is assigned signalling system No.7 point coding, also has simultaneously the signalling system No.7 point coding of pairing Media Gateway Controller.In this network, SGW is as the Signalling Transfer Point of No.7 nation-wide Network.In addition, adopting H.248 between Media Gateway Controller and the Tandem Gateway, agreement communicates.
As shown in Figure 4, at step S401, between the primary Media Gateway Controller of each Tandem Gateway and standby media gateway controller, set up and be used for the link set that connects.This link set is defined as can directly finding by the heavy-route function for the specific link collection that connects between Media Gateway Controller.For example, this link set can be signalling system No.7 link or M2PA (SS7 MTP2-User Peer-to-Peer Adaptation Layer) protocol link.
Then, at step S405, the IP that detects between each Tandem Gateway and the primary Media Gateway Controller separately connects.In the present embodiment, carry out the detection that heartbeat detection realizes that IP connects to the other side respectively by Tandem Gateway and primary Media Gateway Controller thereof.
Particularly, Tandem Gateway and primary Media Gateway Controller send heartbeat message to the other side respectively.If receive the heartbeat acknowledgment messages from the other side, it is all normal to show that then Tandem Gateway, primary Media Gateway Controller are connected with IP, proceeds to detect; If Tandem Gateway and primary Media Gateway Controller are not all received the other side's heartbeat acknowledgment messages in regulation separately overtime, show then that IP between them connects to disconnect.Further, overtime overtime less than primary Media Gateway Controller that can set Tandem Gateway disconnects so that Tandem Gateway finds first than primary Media Gateway Controller that IP connects.
If only have Tandem Gateway or primary Media Gateway Controller not to receive heartbeat acknowledgment messages, show that then primary Media Gateway Controller or Tandem Gateway break down.In the situation that primary Media Gateway Controller breaks down, can adopt existing Tandem Gateway changing method to realize the switching of Tandem Gateway.And in the situation that Tandem Gateway breaks down, primary Media Gateway Controller then blocks the repeat circuit on this Tandem Gateway.
Present embodiment only connects situation about disconnecting for the IP between Tandem Gateway and the primary Media Gateway Controller.
Be connected with IP between its primary Media Gateway Controller when disconnecting when detecting certain Tandem Gateway, at step S410, this Tandem Gateway sends login request message to standby media gateway controller and transfers to standby media gateway controller with request, simultaneously at step S415, primary Media Gateway Controller indicates the switching equipment of PSTN network to block the repeat circuit of this Tandem Gateway via SGW, and this can block the request message realization by send relaying to switching equipment.Switching equipment blocks the repeat circuit on the Tandem Gateway after receiving request message.
Then, at step S420, the standby media gateway controller of this Tandem Gateway and primary media gateway controller revise also exchange the log-on message of this Tandem Gateway.In the present embodiment, each Media Gateway Controller is kept the log-on message of each Tandem Gateway of controlling, and it comprises the respectively login state on primary Media Gateway Controller and standby media gateway controller of this Tandem Gateway.When the log-on message of certain Tandem Gateway of keeping when certain Media Gateway Controller changes, this Media Gateway Controller will send to the pairing Media Gateway Controller log-on message of this variation.By the exchange log-on message, Media Gateway Controller can understand in real time this Tandem Gateway is current to be registered on for which Media Gateway Controller.In the present embodiment, log-on message can be carried in the OPTION method of session initiation protocol (SIP) message and transmit.
Particularly, after standby media gateway controller receives login request message from this Tandem Gateway, the login state of this Tandem Gateway on standby media gateway controller is revised as " in the use ", and the link set of will this amended log-on message passing through to set up sends to primary Media Gateway Controller to upgrade.And primary Media Gateway Controller is after the indication switching equipment blocks the repeat circuit of Tandem Gateway, the login state of this Tandem Gateway on primary Media Gateway Controller is revised as " not using ", and the log-on message of amended this Tandem Gateway is sent to standby media gateway controller to upgrade.
Revise and exchange step by this log-on message, primary and backup Media Gateway Controller can both be known in real time that this Tandem Gateway is current and be registered on the standby media gateway controller.Then, primary Media Gateway Controller stops to send to switching equipment the relaying obstruction request message of this Tandem Gateway.
Then, at step S425, according to log-on message, the repeat circuit of this Tandem Gateway is reset, so that the standby media gateway controller control calling via this Tandem Gateway subsequently.In the present embodiment, standby media gateway controller adopts the signaling point code of primary Media Gateway Controller, send the reset circuit request message via SGW to switching equipment, switching equipment is after receiving the reset circuit request message, discharge the repeat circuit on this Tandem Gateway, and send the replacement acknowledge message.This replacement acknowledge message is sent to primary Media Gateway Controller via SGW, and is because primary Media Gateway Controller does not break down, still available.Then, primary Media Gateway Controller is according to log-on message, finding that this Tandem Gateway is current is registered on the standby media gateway controller, therefore, this replacement acknowledge message is forwarded to standby media gateway controller via the link set between primary Media Gateway Controller and the standby media gateway controller, so that standby media gateway controller is received the replacement acknowledge message.Therefore, the switching equipment of PSTN network and standby media gateway controller know that all the repeat circuit of this Tandem Gateway is released, thereby standby media gateway controller can be controlled the calling of passing through this Tandem Gateway subsequently.
When the switching equipment of PSTN network is called out by this Tandem Gateway, from the isup message of switching equipment, with the replacement acknowledge message similarly, be forwarded to standby media gateway controller via SGW and primary Media Gateway Controller; And from the isup message of standby media gateway controller, can directly send to switching equipment via SGW.
The concrete application of present embodiment is described below with reference to Fig. 5.Next generation network and Fig. 1 shown in Figure 5 are basic identical, and difference is: set up link set LSx between media gateway controller MGC 1 and MGC2.In Fig. 5, represent the transmission direction of signaling message with arrow.
Under normal circumstances, media gateway controller MGC 1 control Tandem Gateway TGW1-1 and TGW1-2, media gateway controller MGC 2 control Tandem Gateway TGW2-1 and TGW2-2.
When relaying gateway TGW1-1 is connected with IP between the media gateway controller MGC 1 when disconnecting, Tandem Gateway TGW1-1 and media gateway controller MGC 1 all can not be received the heartbeat acknowledgment messages from the other side.Suppose the heartbeat timeout of Tandem Gateway less than the heartbeat timeout of Media Gateway Controller, it is unavailable that then Tandem Gateway TGW1-1 detects first media gateway controller MGC 1.So, Tandem Gateway TGW1-1 sends registration request to media gateway controller MGC 2, media gateway controller MGC 2 is behind the registration request that receives from Tandem Gateway TGW1-1, the login state of Tandem Gateway TGW1-1 on media gateway controller MGC 2 in the log-on message of keeping is revised as " in the use ", and the log-on message of amended Tandem Gateway TGW1-1 is sent to media gateway controller MGC 1 to upgrade by link set LSx.Media gateway controller MGC 1 detect Tandem Gateway TGW1-1 unavailable after, switching equipment 1 via Signalling Transfer Point STP1 and STP2 request PSTN network, ..., N blocks the repeat circuit on the Tandem Gateway TGW1-1, and the login state of Tandem Gateway TGW1-1 on media gateway controller MGC 1 is revised as " using ".The log-on message of amended Tandem Gateway TGW1-1 sends to media gateway controller MGC 2 by link set LSx and upgrades.
If the heartbeat timeout of media gateway controller MGC 1 is less than the heartbeat timeout of Tandem Gateway TGW1-1, it is unavailable that then media gateway controller MGC 1 detects first Tandem Gateway TGW1-1.So, the switching equipment 1 of media gateway controller MGC 1 request PSTN network, ..., N blocks the repeat circuit on the Tandem Gateway TGW1-1, and the log-on message of modification Tandem Gateway TGW1-1, and amended log-on message sent to media gateway controller MGC 2, and this moment, Tandem Gateway TGW1-1 also was not registered on the media gateway controller MGC 2, therefore, media gateway controller MGC 1 continues to send relaying and blocks request, until that Tandem Gateway TGW1-1 detects media gateway controller MGC 1 is unavailable and be registered on the media gateway controller MGC 2.Media gateway controller MGC 2 is revised the log-on message of Tandem Gateway TGW1-1, and sends to media gateway controller MGC 1 with registration updating information.
Then, media gateway controller MGC 2 use signaling point code SPC1 by link set LS1-2 and LS2-2 via Signalling Transfer Point STP1 and STP2 to switching equipment 1 ..., N sends the reset circuit request message, with request switching equipment 1 ..., N discharges the repeat circuit on the Tandem Gateway TGW1-1.Switching equipment 1 ..., N send the replacement acknowledge message, and the destination signaling point of this message is SPC1 behind the repeat circuit that has discharged on the Tandem Gateway TGW1-1.Therefore, from switching equipment 1 ..., the replacement acknowledge message of N sends to media gateway controller MGC 1 via Signalling Transfer Point STP1 and STP2 by link set LS1-1 and LS2-1.Media gateway controller MGC 1 finds that according to log-on message Tandem Gateway TGW1-1 is registered on the media gateway controller MGC 2, and therefore, media gateway controller MGC 1 is forwarded to media gateway controller MGC 2 with the replacement acknowledge message via link set LSx.
Fig. 6 is the flow chart of the method for the dual-homed switching of single Tandem Gateway that realizes in next generation network according to another embodiment of the invention, and wherein the part identical with previous embodiment adopts identical mark, and suitably the description thereof will be omitted.Below in conjunction with accompanying drawing, present embodiment is described in detail.
In the present embodiment, after standby media gateway controller has been controlled calling (step S425) via this Tandem Gateway, be connected with IP between its primary Media Gateway Controller when recovering when detecting this Tandem Gateway, at step S505, whether the IP that checking recovers connects stable.Whether for the person of ordinary skill of the art, it is stable to adopt several different methods checking IP to connect, such as connect the retention time after recovering, the service quality (QoS) that IP connects etc. according to IP.
When the IP stable connection, at step S510, manually indicate this Tandem Gateway to switch to primary Media Gateway Controller from standby media gateway controller.For example, provide the manual switchover button to each Tandem Gateway, make Tandem Gateway initiate registration request to primary Media Gateway Controller by manual operation.
Then, at step S520, carry out the switching of this Tandem Gateway from standby media gateway controller to primary Media Gateway Controller.This handoff procedure and Tandem Gateway are similar from the process that primary Media Gateway Controller switches to standby media gateway controller.
Particularly, this Tandem Gateway sends login request message to primary Media Gateway Controller, primary Media Gateway Controller is according to the login request message that receives, revise the login state of this Tandem Gateway on primary Media Gateway Controller in the log-on message, then amended log-on message is sent to standby media gateway controller to upgrade.Standby media gateway controller is blocked the repeat circuit of this Tandem Gateway via the switching equipment of SGW indication PSTN network, and the login state of this Tandem Gateway on standby media gateway controller in the modification log-on message, amended log-on message is sent to primary Media Gateway Controller to upgrade.Then, primary Media Gateway Controller begins the repeat circuit of this Tandem Gateway is reset, and it sends the reset circuit request message to switching equipment.Switching equipment sends the replacement acknowledge message to primary Media Gateway Controller behind the repeat circuit that has discharged this Tandem Gateway.Primary Media Gateway Controller is according to registration message, finds that this Tandem Gateway is current to be registered to oneself, and therefore, primary Media Gateway Controller is directly processed this replacement acknowledge message, and needn't transmit.Then, the primary Media Gateway Controller control calling via this Tandem Gateway subsequently.
In addition, if being connected all with IP between its standby usage Media Gateway Controller, certain Tandem Gateway disconnects, then this Tandem Gateway can not be registered to standby media gateway controller, and primary Media Gateway Controller finds that this Tandem Gateway is not registered to standby media gateway controller yet when the heartbeat acknowledgment messages of not receiving from this Tandem Gateway, then primary Media Gateway Controller sends the request of relaying obstruction to the switching equipment of PSTN network, to block the repeat circuit of this Tandem Gateway.Therefore, the no longer calling of processing and exchanging equipment of this Tandem Gateway.
Can find out by above description, when the method that realizes the dual-homed switching of single Tandem Gateway in next generation network of present embodiment can the IP between the primary Media Gateway Controller of certain Tandem Gateway and its be connected disconnection this Tandem Gateway is automatically switched to standby media gateway controller, thereby provide fail safe and quality higher service, and it is congested can not cause other Tandem Gateway to produce.
Under same inventive concept, Fig. 7 is the schematic block diagram of the Media Gateway Controller that uses in next generation network 700 according to an embodiment of the invention.Below in conjunction with accompanying drawing, present embodiment is elaborated, wherein for the part identical with front embodiment, suitably the description thereof will be omitted.
As previously mentioned, in next generation network, Media Gateway Controller adopts the 1+1 redundant configuration usually, and controls a plurality of Tandem Gateways.
As shown in Figure 7, comprise according to the Media Gateway Controller 700 of present embodiment: link set apparatus for establishing 701, its with the pairing Media Gateway Controller between set up and be used for the link set that is connected; Checkout gear 702, it detects the availability of Tandem Gateway; Request receiving device 703, it receives the registration request from Tandem Gateway; Block indicating device 704, its switching equipment via SGW indication PSTN network blocks the repeat circuit of Tandem Gateway; Log-on message is revised and switch 705, and it revises the log-on message of Tandem Gateway, and exchanges log-on message with the pairing Media Gateway Controller; And reset apparatus 706, the repeat circuit of its replacement Tandem Gateway.
In the present embodiment, Media Gateway Controller 700 is by the link set of being set up by link set apparatus for establishing 701 and log-on message and the isup message that transmits the Tandem Gateway of controlling between the Media Gateway Controller that match.The log-on message of Tandem Gateway can be stored in the storage device of Media Gateway Controller 700.
Media Gateway Controller 700 regularly detects the availability of master control Tandem Gateway by checkout gear 702.In the present embodiment, checkout gear 702 can adopt heartbeat detection mechanism, and whether available by detect the heartbeat acknowledgment messages that whether receives from the master control Tandem Gateway in overtime if detecting the master control Tandem Gateway.
The below describes respectively other assembly of Media Gateway Controller 700 in detail as primary Media Gateway Controller and two aspects of standby media gateway controller from Media Gateway Controller 700.
(1) primary Media Gateway Controller
When Media Gateway Controller 700 detects certain Tandem Gateway when unavailable, block indicating device 704 and send relaying by the switching equipment to the PSTN network and block request message and indicate switching equipment to block the repeat circuit of this master control Tandem Gateway.Then, log-on message is revised and switch 705 is revised the log-on message of these master control Tandem Gateways, and with match Media Gateway Controller and exchange the log-on message of this master control Tandem Gateway.
In log-on message modification and switch 705, revise unit 7051 and revise the login state of this master control Tandem Gateway on Media Gateway Controller 700 in the log-on message, and by log-on message transmitting element 7052 amended log-on message is sent to the pairing Media Gateway Controller, log-on message receiving element 7053 is the log-on message of the modification that sends from the pairing Media Gateway Controller of reception then, and by updating block 7054 registration updating information.
Then, the replacement carried out the repeat circuit of this Tandem Gateway of reset apparatus 706.In reset apparatus 706, acknowledge message receiving element 7062 receives the replacement acknowledge message from switching equipment, and by retransmission unit 7063 according to log-on message, transmit the replacement acknowledge message to the pairing Media Gateway Controller.
(2) standby media gateway controller
After Media Gateway Controller 700 receives the registration request of certain Tandem Gateway by request receiving device 703, revised and switch 705 is revised the log-on message of these Tandem Gateways by log-on message, and with match Media Gateway Controller and exchange the log-on message of this Tandem Gateway.Then, the replacement carried out the repeat circuit of this Tandem Gateway of reset apparatus 706.
In reset apparatus 706, replacement request transmitting unit 7061 sends the request of replacement via SGW to the switching equipment of PSTN network, discharges repeat circuit on this Tandem Gateway with the request switching equipment.Then, the replacement acknowledge message that acknowledge message receiving element 7062 receives from the pairing Media Gateway Controller is because will send to first the pairing Media Gateway Controller from the replacement acknowledge message of switching equipment.
Should be understood that, the Media Gateway Controller of present embodiment and each part thereof can be by such as very lagre scale integrated circuit (VLSIC) or gate array, realize such as the semiconductor of logic chip, transistor etc. or such as the hardware circuit of the programmable hardware device of field programmable gate array, programmable logic device etc., also can use the software of being carried out by various types of processors to realize, also can be realized by the combination of above-mentioned hardware circuit and software.
Although more than describe method and the corresponding Media Gateway Controller of in next generation network, realizing the dual-homed switching of single Tandem Gateway of the present invention in detail by some exemplary embodiments, but above these embodiment are not exhaustive, and those skilled in the art can realize variations and modifications within the spirit and scope of the present invention.Therefore, the present invention is not limited to these embodiment, and scope of the present invention is only defined by the appended claims.
Claims (11)
1. method that in next generation network, realizes the dual-homed switching of single Tandem Gateway, described next generation network comprises a plurality of Media Gateway Controllers, a plurality of Tandem Gateway and a plurality of SGW, wherein said a plurality of Media Gateway Controller carries out signaling via described a plurality of SGWs with the switching equipment of public switch telephone network and communicates by letter, and each of described a plurality of Tandem Gateways is by primary Media Gateway Controller or standby media gateway controller control, and described method comprises:
Described a plurality of Tandem Gateways each primary Media Gateway Controller and standby media gateway controller between the link set that set up to be used for connects;
Detect the connection between each of described a plurality of Tandem Gateways and the primary Media Gateway Controller separately;
When detecting when disconnecting being connected between certain Tandem Gateway and its primary Media Gateway Controller,
Described Tandem Gateway is to the standby media gateway controller request registration;
Described primary Media Gateway Controller indicates described switching equipment to block the repeat circuit of described Tandem Gateway via described SGW;
Described standby media gateway controller and described primary media gateway controller revise also exchange the log-on message of described Tandem Gateway; And
According to described log-on message, the repeat circuit of the described Tandem Gateway of resetting is so that the described standby media gateway controller control calling via described Tandem Gateway subsequently;
Wherein, the step of the repeat circuit of the described Tandem Gateway of described replacement comprises:
Described standby media gateway controller discharges the repeat circuit of described Tandem Gateway via the described switching equipment of described SGW request;
Described switching equipment sends the replacement acknowledge message via described SGW to described primary Media Gateway Controller; And
According to described log-on message, described primary Media Gateway Controller is forwarded to described standby gateway controller with described replacement acknowledge message.
2. method according to claim 1, wherein, the step that detects the connection between each of described a plurality of Tandem Gateways and the primary Media Gateway Controller separately comprises:
Each of described a plurality of Tandem Gateways and primary Media Gateway Controller separately send heartbeat message to the other side respectively; And
If Tandem Gateway and primary Media Gateway Controller thereof do not detect the heartbeat acknowledgment messages from the other side in separately overtime, then show the disconnection that is connected between the primary Media Gateway Controller of this Tandem Gateway and its.
3. method according to claim 2, wherein, the overtime primary Media Gateway Controller less than this Tandem Gateway of described Tandem Gateway overtime.
4. method according to claim 3, wherein, described standby media gateway controller and described primary media gateway controller revise and the step that exchanges the log-on message of described Tandem Gateway comprise:
Described standby media gateway controller is revised the login state of Tandem Gateway described in the described log-on message on described standby media gateway controller according to the request that receives;
Described standby media gateway controller sends to described primary Media Gateway Controller to upgrade described log-on message with amended log-on message;
The login state of Tandem Gateway on described primary Media Gateway Controller described in the described log-on message of described primary media gateway controller revise; And
Described primary Media Gateway Controller sends to described standby media gateway controller to upgrade described log-on message with amended log-on message.
5. method according to claim 4, wherein, described log-on message is carried in the OPTION method of conversation initiating protocol message.
6. according to claim 1 to the described method of 5 any one, also comprise: when detecting when recovering being connected between described Tandem Gateway and the described primary Media Gateway Controller,
Verify whether described connection is stable;
When described stable connection, manually indicate described Tandem Gateway to switch to described primary Media Gateway Controller from described standby media gateway controller; And
Carry out the switching of described Tandem Gateway from described standby media gateway controller to described primary Media Gateway Controller.
7. method according to claim 6, wherein, the step of the switching of the described Tandem Gateway of described execution from described standby media gateway controller to described primary Media Gateway Controller comprises:
Described Tandem Gateway is to described primary Media Gateway Controller request registration;
Described standby media gateway controller indicates described switching equipment to block described Tandem Gateway via described SGW;
The log-on message of described Tandem Gateway is revised and exchanged to described primary Media Gateway Controller and described standby media gateway controller; And
According to described log-on message, the repeat circuit of the described Tandem Gateway of resetting is so that the described primary Media Gateway Controller control calling via described Tandem Gateway subsequently;
Wherein, the step of the repeat circuit of the described Tandem Gateway of described replacement comprises:
Described primary Media Gateway Controller discharges the repeat circuit of described Tandem Gateway via the described switching equipment of described SGW request; And
Described switching equipment sends the replacement acknowledge message via described SGW to described primary Media Gateway Controller.
8. method according to claim 7, wherein, the step that the log-on message of described Tandem Gateway was revised and exchanged to the described primary Media Gateway Controller in the described switch step and described standby media gateway controller comprises:
Described primary Media Gateway Controller is revised the login state of Tandem Gateway described in the described log-on message on described primary Media Gateway Controller according to the request that receives;
Described primary Media Gateway Controller sends to described standby media gateway controller to upgrade described log-on message with amended log-on message;
Described standby media gateway controller is revised the login state of Tandem Gateway described in the described log-on message on described standby media gateway controller; And
Described standby media gateway controller sends to described primary Media Gateway Controller to upgrade described log-on message with amended log-on message.
9. Media Gateway Controller that in next generation network, uses, it carries out signaling via a plurality of SGWs in the described next generation network with the switching equipment of public switch telephone network and communicates by letter, and form the standby usage Media Gateway Controller with the pairing of another Media Gateway Controller, described Media Gateway Controller comprises:
The link set apparatus for establishing, be used for the pairing Media Gateway Controller between set up and be used for the link set that is connected;
Checkout gear is for detection of the availability of Tandem Gateway;
The request receiving device is used for receiving the registration request from Tandem Gateway;
Block indicating device, be used for detecting Tandem Gateway when unavailable at described checkout gear, indicate described switching equipment to block the repeat circuit of Tandem Gateway via described SGW;
Log-on message is revised and switch, is used for revising the log-on message of Tandem Gateway, and exchanges described log-on message with described pairing Media Gateway Controller; And
Reset apparatus is for the repeat circuit of replacement Tandem Gateway;
Wherein, described reset apparatus comprises:
The replacement request transmitting unit is used for sending the request of replacement via described SGW to described switching equipment;
The acknowledge message receiving element is used for receiving the replacement acknowledge message from described switching equipment or pairing Media Gateway Controller; And
Retransmission unit is used for according to described log-on message, transmits described replacement acknowledge message to described pairing Media Gateway Controller.
10. Media Gateway Controller according to claim 9, wherein, described checkout gear adopts heartbeat detection mechanism.
11. Media Gateway Controller according to claim 9, wherein, described log-on message is revised and switch comprises:
Revise the unit, be used for revising the login state of described log-on message Tandem Gateway on described Media Gateway Controller;
The log-on message transmitting element is used for described log-on message is sent to described pairing Media Gateway Controller;
The log-on message receiving element is used for receiving the described log-on message from described pairing Media Gateway Controller; And
Updating block is used for upgrading described log-on message.
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| US8902734B2 (en) * | 2011-01-31 | 2014-12-02 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for providing communication connection resilience |
| EP2501119B1 (en) * | 2011-03-15 | 2013-08-07 | Alcatel Lucent | A gateway for the survivability of an enterprise network using sip |
| JP5633749B2 (en) * | 2011-04-28 | 2014-12-03 | 村田機械株式会社 | Relay server and relay communication system |
| WO2013091248A1 (en) * | 2011-12-23 | 2013-06-27 | 华为技术有限公司 | Method, device and system for service implementation during failure of media gateway controller |
| CN102594612B (en) * | 2012-03-24 | 2015-01-07 | 北京天润融通科技有限公司 | Gateway hot backup system |
| CN104601682B (en) * | 2014-12-31 | 2018-05-22 | 海尔优家智能科技（北京）有限公司 | A kind of method for switching things-internet gateway and relevant apparatus and system |
| CN108282852B (en) * | 2018-02-06 | 2021-04-27 | Oppo广东移动通信有限公司 | WiFi bridging management method and device, mobile terminal and computer readable storage medium |
| CN110233761B (en) * | 2019-06-12 | 2022-04-22 | 广东佳米科技有限公司 | Redundancy switching method and system based on relay server |
| CN114826365A (en) * | 2022-04-29 | 2022-07-29 | 中国信息通信研究院 | Switch signaling indication method and device |
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