CN101159757A - Dual-home synchronous data transmission method - Google Patents
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- CN101159757A CN101159757A CNA2007101673367A CN200710167336A CN101159757A CN 101159757 A CN101159757 A CN 101159757A CN A2007101673367 A CNA2007101673367 A CN A2007101673367A CN 200710167336 A CN200710167336 A CN 200710167336A CN 101159757 A CN101159757 A CN 101159757A
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Abstract
The invention discloses a dual-homing synchronous data transmission method, which comprises defining the notion of synchronous data needed to be exchanged between a main and a backup soft switch equipments; constructing a coding-decoding processing module and assembling the module on the main and the backup soft switch equipments, the coding-decoding processing module including coding function and decoding function defined according to the synchronous data; calling the coding function by the backup soft switch equipment to generate a code stream including the synchronous data when the synchronization between the main and the backup soft switch equipments is needed, and transmitting the code stream to the backup soft switch equipment through a bottom protocol stack; and receiving the code stream of the backup soft switch equipment, calling decoding function to resolve the synchronous data in the code stream, storing the synchronous data to complete the synchronization, and providing synchronous response to the main soft switch equipment through the bottom protocol stack. The invention overcomes the problem of compatibility and intercommunication between the dual-homing main and the backup equipments, and is suitable for the condition that high-frequency data has high requirement for the link resources (bandwidth).
Description
Technical field
The present invention relates to a kind of mechanics of communication, specifically, relate to the dual-home synchronous data transmission method that a kind of dual-homed active and standby domain browsing location register (VLR) adopts synchronously.
Background technology
At present, Softswitch technology is used extensive day by day, in the flexible exchanging network based on Softswitch technology, original MSC is decomposed into MSC Server (Mobile Switching Center Server) and MGW (MediaGate Way: media gateway).Wherein, MSC Server bears call control department branch function, Softswitch just, and its wide coverage, user capacity are bigger.In the network operation, if Softswitch breaks down and cisco unity malfunction, business will be interrupted on a large scale.For guaranteeing reliability, the stability of the network operation, a large amount of long-distance disasters that adopt dual-homed method to realize soft switch in the existing network.
With reference to shown in Figure 1, a kind of dual-homed soft switch framework that uses in the prior art is done detailed description.
In the prior art, can adopt the 1+1 networking mode based on the dual-homed disaster tolerance of soft switch, promptly a host apparatus is equipped with a stand-by equipment.Two independently MSC Server is dual-homed with MSCServer, standby Softswitch composition as the master respectively, and active and standby both sides link to each other with MGW1, MGW2, attaching position register (HLR, home location register).Solid line is that ancillary equipment is connected with the signal link between the soft switch with main; Dotted line is that ancillary equipment is connected with the signal link of standby soft switch; Doublet between two MSC Server is the heartbeat line, is used for device status monitoring.Under normal circumstances, ancillary equipment only carries out alternately to realize business with Softswitch with main, standby Softswitch is monitored the main Softswitch of using in real time by heartbeat message, take place when unusual with Softswitch when main, standby Softswitch activates the Mc mouth at once, waits for media gateway (MGW1) registration of main usefulness, and takes over main all business with soft switch after registration, transfer the master to and use state, other network elements and business will not exerted an influence by such mode.
In dual-homed,, just must keep the consistency of user data between the active and standby territory if standby Softswitch need guarantee to switch the professional normal of back contracted user.Therefore, need to carry out user data synchronization between the active and standby Softswitch, generally can adopt regularly synchronous or real-time synchronous mode.And for the transmission method of dual-homed VLR synchrodata,, define realization voluntarily by equipment vendor, thereby implementation is various, unsuitable intercommunication butt joint owing to there is not protocol specification.
At present, the normal data transmission method that adopts comprises following a few class:
First kind, to adopt self-defined structure or VLR database list structure be user data cell, generates corresponding packet/file, transmit with file mode; In second kind, packet/file transfers, except data content, carry that data structure is described or the characteristic information of data field, according to data description or characteristic information, the data that receive are preserved by relatively determining whether at receiving terminal.
As shown in Figure 2, the basic step of the processing procedure of above-mentioned two kinds of data sync modes is done detailed description.
Step S201: the MSCServer1 of main usefulness sends synchronous data requests, and comprising needs data in synchronization, requires to carry out data encapsulation.
Step S202: send synchronous data requests by chain road direction opposite end.
The data file processing section directly encapsulates generation packet/file with self-defined structure, DB (Data Base) list structured data unit; Perhaps, encapsulation data structure, feature description and data content generate data packets transmitted/file respectively.Afterwards, transmit synchronous data requests by the link between the active and standby Softswitch (particular protocol stack or FTP etc.).
Step S203: resolution data sends the synchrodata indication to the upper strata.
After the data processing section receiving isochronous data request of standby MSCServer2, analyse data content according to inner definition structure/DB tabulation; Perhaps the data content is resolved, and extract the data that need preservation according to data characteristics with reference to the data description of encapsulation.Afterwards, the synchrodata indication of parsing being finished sends to MSCServer2 and handles.
After step S204:MSCServer2 preserves synchrodata, send the synchrodata success response.
Step S205: after encapsulation to data content in the message is finished in the data file processing section, return the synchrodata response by the bottom link.
The data processing section of step S206:MSCServer1 behind the parsing synchrodata response message, sends confirmation of synchronization to MSCServer1, finishes synchronous flow process.
Adopt the said method data sync to realize, still have some problems to need to improve.For above-mentioned first kind of method of synchronization, core net (CN) software version that equipment vendor itself is supporting, may cause the structural change of data cell owing to upgrading, this can cause the message intercommunication fully (compatibility) between the high lowest version of CN software, the stand-by equipment of lowest version can not correctly be resolved synchrodata according to original structure, bring the intercommunication and the upgrade problem of version.
For above-mentioned second kind of synchronous transfer mode, master/slave device all needs to use data-base recording data characteristics information or resolution data to describe and is used for identification and comparing data.Though such mode can guarantee the compatibility of message between the high lowest version of CN to a certain extent, when data characteristics changes when the transition of protocol version (R99--〉R5), the problem of intercommunication fully can take place still.Simultaneously, organizing of characteristic information and corresponding data content and message structure all depends on concrete implementation strategy, is difficult for promoting in distinct device merchant's intercommunication realizes.
In addition,, also comprise a small amount of multidate information, as positional information (LAI) if need be synchronized to the data owner user's of standby host static data.For dynamic data, may comparatively fast change and by frequent synchronously, if directly adopt user data structure or list structure to transmit as data cell, so dynamic data synchronously in, invalid non-dynamic content also can take packet content and transmits together in the structure; And the method for carrying data description/characteristic information in message also can additionally increase the size of synchronization packets.Like this,, multidate information huge at equipment user's capacity changes frequent situation, can take more bandwidth, causes bigger load to link.
Summary of the invention
Technical problem solved by the invention provides a kind of dual-home synchronous data transmission method, has overcome dual-homed active and standby both sides' compatible intercommunication problem, simultaneous adaptation the high frequency degrees of data situation of synchronously link circuit resource (bandwidth) being had relatively high expectations.
Technical scheme is as follows:
A kind of dual-home synchronous data transmission method, step comprises:
(1) main semanteme with the synchrodata that needs between Softswitch and the standby Softswitch to exchange is defined;
(2) structure encoding and decoding processing module is joined described master described encoding and decoding processing module with Softswitch and the enterprising luggage of standby Softswitch, include coding function and decoding functions according to described synchrodata definition in the described encoding and decoding processing module;
(3) when described main the needs between with Softswitch and standby Softswitch when synchronous, the coding function that described standby Softswitch calls in the described encoding and decoding processing module generates the code stream that comprises described synchrodata, and sends described code stream by underlying protocol stack to described standby Softswitch;
(4) described standby Softswitch receives described code stream, call decoding functions in the described encoding and decoding processing module and parse described synchrodata in the described code stream, described synchrodata is preserved and finished self is synchronous, and finish sync response to described master with Softswitch by described underlying protocol stack.
Further, in the step (1), define according to the semanteme of abstract syntax definition to described synchrodata, described synchrodata comprises static data and dynamic data.
Further, in the step (1), in described definition, described synchrodata category segmentation is defined, and described synchrodata is defined as having autgmentability.
Further, in the step (1), described synchrodata is associated with user ID, is used for making every homochronousness data of synchronization request all separate.
Further, in the step (2), described coding function and decoding functions are used for the coding or the decoding processing of described synchrodata, comprise label, length and content in its coding rule.
Further, step (3) comprising:
(31) the main database module of using Softswitch is with the encoding and decoding processing module of described isochronous data transfers to described main usefulness, and request is encoded to the needs data in synchronization;
(32) the encoding and decoding processing module of described main usefulness according to abstract syntax definition and coding rule, is called coding function and is generated described code stream, comprises described synchrodata in the described code stream; And the described code stream after will encoding returns to described database module;
(33) the described synchrodata that will return of described encoding and decoding processing module is packaged into synchronization data request, sends to the dual-homed administration module of main usefulness;
(34) underlying protocol stack that adopts by communication between the primary and backup Mobile Switching Center Server, the dual-homed administration module of described main usefulness send synchronization request message to standby dual-homed administration module after receiving synchronization data request.
Further, step (4) comprising:
(41) after the dual-homed module of standby Softswitch receives the main synchronization request message of sending with Softswitch by underlying protocol stack, transmit synchronous Indication message to standby database module;
(42) after standby database module receives synchronous Indication message, be transmitted to standby encoding and decoding processing module, import the pairing synchronization message data structure of stand-by equipment version simultaneously into, ask described standby encoding and decoding processing module to carry out code stream analyzing;
(43) standby encoding and decoding processing module is called the corresponding decoding functions of abstract syntax definition, and described synchronous Indication message is resolved, and the described synchrodata that parses is returned to standby database module;
(44) after described standby database module receives the synchronization message data structure finished of decoding, all kinds of synchrodatas is preserved and synchronously according to user ID, and the transmission synchronous response message is to described standby dual-homed module;
(45) underlying protocol stack that adopts by communication between the active and standby Softswitch of described standby dual-homed module returns the dual-homed module that synchronous response message is given main usefulness; The dual-homed module of described main usefulness receives after the described synchronous response message, to the database module transmission timing verification message of main usefulness.
Further, in the step (44), if described standby database module is success synchronously, then send successful synchronous response message synchronously, otherwise transmission has the synchronous response message of synchronization failure of error reason to standby dual-homed module to standby dual-homed module.
Further, in the step (45), after the database module of described main usefulness receives described timing verification message,, then revise end process after the corresponding synchronous data markers if the result is successfully; If the result then directly finishes this synchronizing process for failure.
Further, in the step (4), described underlying protocol stack adopts SCTP.
Compared with prior art, because the present invention in the transmission course of dual-homed active and standby synchrodata, has introduced the treatment mechanism of encoding and decoding, realized the synchronous flexibly of data, significantly reduce the transmission of redundancy/additional data, in the data sync of real-time high frequency, reduced link load.Simultaneously,, realized the compatibility of high lowest version, can ignore, be convenient to the smooth upgrade of version unrecognizable highest version parameter by the washability and the autgmentability of message parameter definition.
In addition, the implementation that the present invention is used, suitable equally for the active and standby plate synchrodata of network element device self veneer, cooperate suitable bottom link transmission agreement, main and standby boards also can adopt this mode to realize edition compatibility and smooth upgrade.
Description of drawings
Fig. 1 is the networking sketch of the active and standby dual-homed disaster tolerance mode of 1+1 in the prior art;
Fig. 2 is a master/slave device data sync transmission basic handling flow chart in the prior art;
Fig. 3 is the data sync realization flow figure that adopts the ASN.1 encoding and decoding among the present invention.
Embodiment
The invention provides a kind of method of data synchronization of use abstract syntax definition (ASN.1, Abstract Syntax NotationOne) encoding and decoding, implementation step is as follows:
1, at first, at the synchrodata that needs between the active and standby Softswitch to exchange, define according to the semanteme of ASN.1 standard to this synchrodata.
Synchrodata comprises static data and dynamic data, and wherein static data mostly is subscription data, changes less; Dynamic data is a positional information etc., along with User Activity than frequent variations.
In definition, stipulated several criterions of carrying out synchrodata ASN.1 definition:
(1) segmentation defines to the synchrodata category, and every class data all are optionally in synchronization message, and are non-essential.Can be divided into basic service, supplementary service etc. as static data, be combined into synchronization message after the definition respectively.
(2) to the definition of the optional type of non-key parameters selection in every homochronousness data, a small amount of significant data is defined as mandatory parameter.Wherein, mandatory parameter must be comprised by synchronization message; Optional parameters promptly optionally is included in the synchronization message, and whether decision is according to actual needs comprised by synchronization message.
(3) definition to every homochronousness data all requires to have extensibility.
Adopt such definition criterion can realize the synchronous flexibly of synchrodata, when user's homochronousness data change, can carry out separately synchronously with regard to these syncsort data, and selectively synchronous critical data wherein.Simultaneously, the subsequent development of version is convenient in washability and extendible definition, and is also significant to edition compatibility.
2, according to ASN.1 to the corresponding encoding and decoding processing module of the constructing definitions of synchrodata, the encoding and decoding processing module is joined at the dual-homed enterprising luggage of active and standby Softswitch both sides network element, call by correlation module.
For the main Softswitch of using, after the synchrodata in determining synchronization message, call the coding function in the encoding and decoding processing module, generate the code stream that comprises synchrodata; For standby Softswitch, the synchronization message that receives is defined according to ASN.1, call the decoding functions in the encoding and decoding processing module, finish code stream analyzing, parse synchrodata wherein, synchrodata preserves and finishes that self is synchronous the most at last.
By calling coding function and the decoding functions in the encoding and decoding processing module, the winner will can not had problems with the understanding/parsing to synchrodata between Softswitch and the standby Softswitch, and then realize intercommunication.
3, synchronization message selects suitable underlying protocol stack to transmit (as IP agreements such as STCP) between active and standby Softswitch.
Bottom link in dual-homed enforcement is not limited to certain particular protocol stack, can dispose in conjunction with the component of a system of reality, selects suitable link transmission mode (as TUP) to realize the data sync of code encoding/decoding mode.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in further detail.
With reference to shown in Figure 3, be the synchronous flow chart of a kind of dual-homed master/slave data of present embodiment, described and adopted the ASN.1 encoding and decoding to handle the implementation method that realizes data sync, wherein will to the coding of synchrodata with resolve separately as a processing procedure.
At first, determine the ASN.1 definition of synchrodata, the organization definition of synchrodata just, it is the key among the present invention.The active-standby Softswitch is handled the encoding and decoding of synchrodata and all is defined as foundation with this.
Given below is the Chinese semantic description of synchrodata.
Synchronous data requests=structure
{
Basic user data mark [0] is optional,
Basic business data mark [1] is optional,
CUG business datum mark [2] is optional,
OCSI subscription data mark [3] is optional,
TCSI subscription data mark [4] is optional,
.../* represent to expand */
}
OCSI data=structure
Group character mark [0] is essential,
OCSI unit mark [1] is essential,
.../* represent to expand */
}
OCSI unit=structure
User ID mark [0] is essential, must comprise in/* the structure, otherwise think illegal */
Sequence identifier mark [1] is essential,
Professional triggering criterion mark [2] is essential,
Camel capable phase mark [3] is optional, can not comprise in/* the structure, can think legal */
Notice CSE mark [4] is optional,
Csi activation tagging [5] is optional,
... ./* represent to expand */
}
To ASN.1 definition, can at first synchrodata be classified synchronous flexibility when being convenient to data variation.Above-mentioned " synchronous data requests " can be divided into basic user data, basic business data, CUG business datum or the like.For each homochronousness data, all be defined as optional type (among the ASN.1 with OPTIONAL sign, do not identify think essential), optionally comprised by synchronization message; Simultaneously, every homochronousness data can make the every homochronousness data in the synchronization request all separate by related with user ID separately, do not have relevance, and " OCSI unit " is related with parameter " user ID " in describing as mentioned.When user contracting data (static state) or dynamic data variation, adopt such definition mode, the a certain homochronousness data that change of simultaneous user separately between the active and standby Softswitch, and the extra content of not carrying other, farthest reduce the additional content of synchrodata, reduce taking link bandwidth.
For the syntactic definition of synchrodata, also need to consider software release upgrade and compatibling problem.To self definition of each homochronousness data, except critical field and the stronger field of relevance need be defined as essential type, all the other parameters can be defined as Optional Field.Shown in top " OCSI unit " definition, user ID (IMSI), sequence number (number) and professional triggering criterion (OTDPData) are the most critical content in the subscription data, and all the other parameters are inferior important, therefore are defined as essential and optional parameters respectively.In addition, the ending for every homochronousness data definition all identifies with ellipsis " ... ", shows that in follow-up highest version such synchrodata can be expanded by adding new parameter.Based on such definition criterion, can realize the highest version compatibility easily between the active and standby Softswitch.In dual-homed, under the low situation of standby Softswitch version, the synchronization message of standby Softswitch to receiving, except that mandatory field and the Optional Field that can discern are resolved, the unidentifiable parameter of bringing in the highest version is directly abandoned, thereby guarantee the preservation of significant data, improve the compatibility between the version; For standby Softswitch version condition with higher, then can discern all parameters in the synchronization message, there is not the situation that abandons content.Optional parameters can be involved in structure, can be not involved yet, and it is legal all to think; Mandatory parameter must comprise in structure, otherwise thinks illegal.
Synchronous data requests Chinese above corresponding is described and organization definition criterion mentioned above, has provided the partial content of corresponding synchronous request of data ASN.1 syntactic definition below:
DH_Synchronization_Arg::=SEQUENCE{/* synchronous data requests */
Tuple_r_ms [0] TUPLE_R_MS OPTIONAL ,/* basic user data */
Tuple_r_bsg [1] TUPLE_R_BSG OPTIONAL ,/* basic service */
tuple_r_icug [2]TUPLE_R_ICUG?OPTIONAL， /*CUG*/
tuple_r_ocsi [3]TUPLE_R_OCSI?OPTIONAL， /*OCSI*/
tuple_r_tcsi [4]TUPLE_R_TCSI?OPTIONAL， /*TCSI*/
Below omit
...
}
TUPLE_R_OCSI::＝SEQUENCE SIZE(1..mTDPDataNum_M) OF
R_OCSI
R_OCSI ∷=SEQUENCE{/* OCSI data */
tupleNo [0]TUPLENo，
r_ocsi_tuple [1]R_OCSI_TUPLE，
...
}
R_OCSI_TUPLE ∷=SEQUENCE{/* OCSI unit */
IMSI [0] IMSI ,/* user ID */
Number [1]Serialnumber，
OTDPData [2]O-BcsmCamelTDPData，
CamCapHd [3]CamelCapabilityHandling OPTIONAL，
notificationToCSE?[4]NULL OPTIONAL，
csiActive [5]NULL OPTIONAL，
}
Serialnumber::＝INTEGER(0..255)
CamelCapabilityHandling::＝INTEGER(1..16)
After finishing the synchronization message organization definition, in conjunction with Fig. 3, the method for data synchronization that adopts encoding and decoding is described, the step of specific implementation flow process is as follows:
(change as the OCSI data) when user data changes, Visited Location Registor (VLR, Visitor Location Register) is revised user data table, the amended OCSI data record of database (DB) mark, the flow process beginning that is triggered synchronously.
Step S301, the DB-A module is transmitted synchrodata to coding/decoding module-A, the request coding.
The DB-A module corresponds to the user data (as the OCSI data) of change in the structure of ASN.1 definition, i.e. synchronous data requests structure, and other data in the structure all are changed to sky owing to do not change.Structure assignment is accurate to parameter, and structure is passed to coding/decoding module-A, and request is encoded to the synchrodata data.
Step S302, after the synchronization message that reception DB-A module is imported into, coding/decoding module-A calls coding function and generates code stream according to the synchronous parameter (as the OCSI data) of sign needs in the synchronization message.Only comprise the OCSI data of variation in the code stream, and do not comprise other subsidiary contents.Code stream after the coding is returned to the DB-A module, as synchrodata.
Coding/decoding module-A adopts the TLV coded format according to ASN.1 syntactic definition and coding rule, and promptly the mode of label (Tag)+length (Length)+content (Value) provides a corresponding cover function, and the coding and decoding that is used for synchrodata is handled.
Step S303 after the code stream that the DB-A module is returned coding/decoding module-A encapsulates, sends synchronization data request to dual-homed administration module-A.
Step S304, dual-homed administration module-A is after receiving synchronization data request, by MSC Sever active and standby between the underlying protocol stack that adopts of communication (as SCTP (StreamControl Transmission Protocol, SCTP)), the dual-homed administration module-B to the opposite end sends synchronization request message.
After step S305, the dual-homed module-B of standby Softswitch receive the main synchronization request message of sending with Softswitch by underlying protocol stack, to the synchronous Indication message of DB-B module forwards.
Step S306, after the DB-B module receives packet, from code stream, extract synchrodata, and synchrodata is transmitted to coding/decoding module-B, import the pairing synchronization message data structure of stand-by equipment version simultaneously into, be that DH_Synchronization_Arg defines pairing structure, code stream analyzing is carried out in request.
Step S307, coding/decoding module-B call the corresponding decoding functions of ASN.1 definition code stream are resolved, and the synchrodata Indication message that parsing is finished returns to the DB-B module, only comprises the OCSI data in the synchrodata wherein.Content for the unrecognizable code stream of standby host version will abandon automatically, can not cause and resolve failure.
For example, when the master was higher with the Softswitch version, OCSI data newly-increased spreading parameter in highest version can't be discerned in the software version of standby Softswitch, will be dropped, but not influence obtaining important discernible parameter.If the mandatory field parse error to the ASN.1 syntactic definition then returns decoding error, this synchronization failure.
Step S308 after the DB-B module receives the message structure of finishing of decoding, preserves all kinds of synchrodata (OCSI) according to user ID.If the DB-B module is success synchronously, then send successful synchronous response message synchronously, otherwise send the synchronous response message of the synchronization failure that has error reason to dual-homed module-B.
Step S309, the underlying protocol stack that dual-homed module-B adopts by communication between the active and standby Softswitch (as SCTP) return synchronous response message and give dual-homed module-A.
Step S310, main dual-homed module-A with Softswitch receives after this synchronous response message, to DB-A module forwards timing verification message (content comprises success or failure).
The DB-A module receives this acknowledgement message, if the result is successfully, and end process after the modification corresponding synchronous data markers; If the result then directly finishes this synchronizing process for failure.So far, a dual-homed data synchronization process is finished.
In existing dual-homed data sync mode, data generally all are the packet or the file mode transmission of data cell with self-defined structure/list structure.In the present embodiment, mainly improved the transmission form of synchrodata on link, use newly-increased ASN.1 encoding and decoding to handle (the step S302 in the present embodiment for example, with step S307), the code stream form of synchrodata with the ASN.1 coding transmitted by underlying protocol stack, and resolve at receiving terminal.
In sum, adopt the inventive method, be applied to the process of dual-homed user data synchronization, can be reduced in customer volume effectively when big, data sync takies link bandwidth, has solved active and standby problem with Softswitch edition compatibility and upgrading.Same, for the active and standby plate data sync and the edition upgrading of equipment veneer, similarly processing mode can be used for reference use, and can obtain good effect.
Claims (10)
1. dual-home synchronous data transmission method, step comprises:
(1) main semanteme with the synchrodata that needs between Softswitch and the standby Softswitch to exchange is defined;
(2) structure encoding and decoding processing module is joined described master described encoding and decoding processing module with Softswitch and the enterprising luggage of standby Softswitch, include coding function and decoding functions according to described synchrodata definition in the described encoding and decoding processing module;
(3) when described main the needs between with Softswitch and standby Softswitch when synchronous, the coding function that described standby Softswitch calls in the described encoding and decoding processing module generates the code stream that comprises described synchrodata, and sends described code stream by underlying protocol stack to described standby Softswitch;
(4) described standby Softswitch receives described code stream, call decoding functions in the described encoding and decoding processing module and parse described synchrodata in the described code stream, described synchrodata is preserved and finished self is synchronous, and finish sync response to described master with Softswitch by described underlying protocol stack.
2. dual-home synchronous data transmission method according to claim 1 is characterized in that, in the step (1), defines according to the semanteme of abstract syntax definition to described synchrodata, and described synchrodata comprises static data and dynamic data.
3. dual-home synchronous data transmission method according to claim 2 is characterized in that, in the step (1), in described definition, described synchrodata category segmentation is defined, and described synchrodata is defined as having autgmentability.
4. dual-home synchronous data transmission method according to claim 2 is characterized in that, in the step (1), described synchrodata is associated with user ID, is used for making every homochronousness data of synchronization request all separate.
5. dual-home synchronous data transmission method according to claim 1 is characterized in that, in the step (2), described coding function and decoding functions are used for the coding or the decoding processing of described synchrodata, comprise label, length and content in its coding rule.
6. dual-home synchronous data transmission method according to claim 1 is characterized in that, step (3) comprising:
(31) the main database module of using Softswitch is with the encoding and decoding processing module of described isochronous data transfers to described main usefulness, and request is encoded to the needs data in synchronization;
(32) the encoding and decoding processing module of described main usefulness according to abstract syntax definition and coding rule, is called coding function and is generated described code stream, comprises described synchrodata in the described code stream; And the described code stream after will encoding returns to described database module;
(33) the described synchrodata that will return of described encoding and decoding processing module is packaged into synchronization data request, sends to the dual-homed administration module of main usefulness;
(34) underlying protocol stack that adopts by communication between the primary and backup Mobile Switching Center Server, the dual-homed administration module of described main usefulness send synchronization request message to standby dual-homed administration module after receiving synchronization data request.
7. dual-home synchronous data transmission method according to claim 1 is characterized in that, step (4) comprising:
(41) after the dual-homed module of standby Softswitch receives the main synchronization request message of sending with Softswitch by underlying protocol stack, transmit synchronous Indication message to standby database module;
(42) after standby database module receives synchronous Indication message, be transmitted to standby encoding and decoding processing module, import the pairing synchronization message data structure of stand-by equipment version simultaneously into, ask described standby encoding and decoding processing module to carry out code stream analyzing;
(43) standby encoding and decoding processing module is called the corresponding decoding functions of abstract syntax definition, and described synchronous Indication message is resolved, and the described synchrodata that parses is returned to standby database module;
(44) after described standby database module receives the synchronization message data structure finished of decoding, all kinds of synchrodatas is preserved and synchronously according to user ID, and the transmission synchronous response message is to described standby dual-homed module;
(45) underlying protocol stack that adopts by communication between the active and standby Softswitch of described standby dual-homed module returns the dual-homed module that synchronous response message is given main usefulness; The dual-homed module of described main usefulness receives after the described synchronous response message, to the database module transmission timing verification message of main usefulness.
8. dual-home synchronous data transmission method according to claim 7, it is characterized in that, in the step (44), if described standby database module is success synchronously, then send successful synchronous response message synchronously, otherwise transmission has the synchronous response message of synchronization failure of error reason to standby dual-homed module to standby dual-homed module.
9. dual-home synchronous data transmission method according to claim 7, it is characterized in that, in the step (45), after the database module of described main usefulness receives described timing verification message, if the result is successfully, then revise end process after the corresponding synchronous data markers; If the result then directly finishes this synchronizing process for failure.
10. dual-home synchronous data transmission method according to claim 1 is characterized in that, in the step (4), described underlying protocol stack adopts SCTP.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457875A (en) * | 2010-10-21 | 2012-05-16 | 中国移动通信集团江苏有限公司 | Business switching method and system |
| CN102595107A (en) * | 2012-02-22 | 2012-07-18 | 南京迪威视讯技术有限公司 | Streaming media data structure, decoding method and device |
| CN104301154A (en) * | 2014-10-31 | 2015-01-21 | 上海斐讯数据通信技术有限公司 | Method for synchronizing data between active main control board and standby main control board of double-main-control system |
| CN105682215A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Clock synchronization method and device as well as cascaded base station system |
| CN108243256A (en) * | 2018-01-19 | 2018-07-03 | 网宿科技股份有限公司 | A kind of date storage method, encoding device and decoding device |
| CN108337162A (en) * | 2018-02-09 | 2018-07-27 | 北京特立信电子技术股份有限公司 | System and method for supporting dual-homing protection |
| CN109194526A (en) * | 2018-10-18 | 2019-01-11 | 东方通信股份有限公司 | The more ownership of group realize the failover method of cluster multi call |
| CN114143329A (en) * | 2021-11-25 | 2022-03-04 | 北京凯视达科技股份有限公司 | Method and device for synchronous execution and parameter transmission of main and standby functions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327728C (en) * | 2005-06-27 | 2007-07-18 | 华为技术有限公司 | Method for realizing mobile switching center double ownerships |
| US7962585B2 (en) * | 2005-08-15 | 2011-06-14 | Microsoft Corporation | Partial item change tracking and synchronization |
| CN1946058A (en) * | 2006-10-28 | 2007-04-11 | 武汉市中光通信公司 | Soft exchange device allopatric disaster recovery solution system and its method for software exchange network |
-
2007
- 2007-10-25 CN CN2007101673367A patent/CN101159757B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457875A (en) * | 2010-10-21 | 2012-05-16 | 中国移动通信集团江苏有限公司 | Business switching method and system |
| CN102457875B (en) * | 2010-10-21 | 2014-05-07 | 中国移动通信集团江苏有限公司 | Business switching method and system |
| CN102595107A (en) * | 2012-02-22 | 2012-07-18 | 南京迪威视讯技术有限公司 | Streaming media data structure, decoding method and device |
| CN104301154A (en) * | 2014-10-31 | 2015-01-21 | 上海斐讯数据通信技术有限公司 | Method for synchronizing data between active main control board and standby main control board of double-main-control system |
| CN104301154B (en) * | 2014-10-31 | 2018-01-16 | 上海斐讯数据通信技术有限公司 | A kind of primary method of data synchronization between slave control board of master control system |
| CN105682215A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Clock synchronization method and device as well as cascaded base station system |
| CN108243256A (en) * | 2018-01-19 | 2018-07-03 | 网宿科技股份有限公司 | A kind of date storage method, encoding device and decoding device |
| CN108243256B (en) * | 2018-01-19 | 2020-08-04 | 网宿科技股份有限公司 | Data storage method, coding equipment and decoding equipment |
| CN108337162A (en) * | 2018-02-09 | 2018-07-27 | 北京特立信电子技术股份有限公司 | System and method for supporting dual-homing protection |
| CN108337162B (en) * | 2018-02-09 | 2020-11-10 | 北京特立信电子技术股份有限公司 | System and method for supporting dual-homing protection |
| CN109194526A (en) * | 2018-10-18 | 2019-01-11 | 东方通信股份有限公司 | The more ownership of group realize the failover method of cluster multi call |
| CN109194526B (en) * | 2018-10-18 | 2022-05-24 | 东方通信股份有限公司 | Fault take-over method for realizing cluster group calling by group multi-homing |
| CN114143329A (en) * | 2021-11-25 | 2022-03-04 | 北京凯视达科技股份有限公司 | Method and device for synchronous execution and parameter transmission of main and standby functions |
| CN114143329B (en) * | 2021-11-25 | 2023-10-27 | 北京凯视达科技股份有限公司 | Method and device for synchronous execution of main and standby functions and parameter transmission |
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