CN100394735C - Method for transmitting news on signalling link based on No.7 signalling system - Google Patents
Method for transmitting news on signalling link based on No.7 signalling system Download PDFInfo
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- CN100394735C CN100394735C CNB2004100737033A CN200410073703A CN100394735C CN 100394735 C CN100394735 C CN 100394735C CN B2004100737033 A CNB2004100737033 A CN B2004100737033A CN 200410073703 A CN200410073703 A CN 200410073703A CN 100394735 C CN100394735 C CN 100394735C
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Abstract
The present invention discloses a method for transmitting information in signaling links on the basis of a No. 7 signaling system. The system comprises a transmitting end and a receiving end which are directly connected with a signaling link or are connected with the signaling link by a signaling switching point. The method comprises: (1) virtual relays are additionally arranged in exchange equipment on the transmitting end and the receiving end, corresponding circuit identifying codes (CIC codes) are assigned to each virtual relay, the virtual relays are configured into a virtual relay group, and the configuring information at least contains routing information corresponding to the virtual relays; (2) the transmitting end transmits messages only needing to be transferred on the signaling link to the receiving end by the virtual relays, and the messages needing to be transmitted are transmitted by the original parameters or automatic defined parameters or automatic defined ISUP messages. By using the present invention, the transmitting end and the receiving end do not need to occupy physical relay circuits when sending the messages which only needs to be transferred on the signaling link. As a result, the present invention avoids the resource waste caused by the occupation of physical relay circuits when no voice is transmitted.
Description
Technical field
The present invention relates to field of telecommunications, relate in particular to a kind of method that on signaling link, transmits message based on the No.7 signaling system.
Background technology
The No.7 signaling system is a kind of international, standardized universal common channel signalling system, it can satisfy the requirement of multiple communication service, can be used for telephone network, intelligent network and integrated digital network etc., can also be as a kind of reliable transfer system, between exchange and Special Service Center, carry out the information transmission, therefore, the No.7 signaling system is the indispensable support system of leading to network synthesization, intelligent development.
The basic structure of No.7 signaling mainly is divided into Message Transfer Part (MTP), signal connecting element branch (SCCP) and User Part (UP).Wherein, User Part (UP) comprises ISDNYong Hubufen (ISUP), and it has defined the signal procedure of ISDN communication network and the message and the message coding of these programs of realization.The ISDN(Integrated Service Digital Network) User Part (ISUP) of China N0.7 signaling system has defined domestic technique standard YDN038-1997 " domestic No.7 signaling method technical specification ISDN(Integrated Service Digital Network) User Part (ISUP) ".Regulation according to above-mentioned standard, the isup message that transmits on the signaling link must comprise legal CIC (ISUPCIC, Circuit Identifier Code, cic circuit identification code), because CIC is corresponding to a concrete physics repeat circuit, do not transmit any information even therefore just exist on the relaying, call also need use the repeat circuit phenomenon of (relaying is called for short in the back).In the relation of this earlier simple recommended information and message, when needs sent information, transmitting terminal generates information had fixed format information, and the recipient could obtain corresponding informance according to predefined format analysis message.
See also Fig. 1, it is the systematic schematic diagram of a call setup.In call establishment, when user 11 made a call, the speech path of an idle relay as this calling selected by the office 12 that makes a start, and this relaying identifies with CIC at transmitting terminal, and the CIC of this transmitting terminal covers in the initial address message of calling.Receiving terminal 13 receives described initial address message, find corresponding with it receiving terminal CIC according to the CIC in this message, CIC uses receiving terminal CIC in the signaling message of receiving terminal later stage transmission, CIC uses transmitting terminal CIC in the signaling message of transmitting terminal later stage transmission, once continue middle transmitting terminal, receiving terminal all finds this corresponding calling according to the CIC that receives, at last, make that sending user 11 establishes a communications link with reception user 14.
In said process, at first to transmit calling signaling information, and need not in speech channel, to transmit any information by signaling link, speech channel just transmits the path of speech.A relaying must be taken in order to transmit signaling,, a large amount of relayings will be taken, invisible increase cost if when telephone traffic is big.
In SCDMA (S-CDMA) connecting system, when the user when roaming into another LMCC, need carry out the authentication registration from a LMCC (local movements control center).That is: portable terminal sends to HLR (location register) with the UID (user identification code) of this terminal and carries out authentication, determines that this terminal is a legal users; Terminal is initiated enrollment process, the position of this terminal of system log (SYSLOG) in network after the authentication success.In enrollment process, need to send a message to the LMCC of ownership place from the LMCC of roaming place.Owing to adopt NO.7 to connect between two LMCC, mobility management informations such as authentication, registration, deactivation are that the form with isup message transmits on the NO.7 signaling link, do not need to provide speech.Regulation according to domestic ISDN User Part: corresponding to a repeat circuit, so each authentication, enrollment process all need to take a relaying, but but do not transmit any information on the relaying by CIC for every isup message.When the user roams frequent or a large number of users initiation registration, can take a large amount of interoffice junctions, if the relaying configuration not too rationally will cause user's call completing rate to reduce, influence the communication performance of whole network.
In the signaling system based on No.7, in some cases, just wish to transmit some information by signaling link, and need in speech channel, not transmit any information, but only transmit isup message with regard to the corresponding repeat circuit of needs at signaling link according at present domestic technical specification regulation, cause the waste of relay resource thus, thereby make user's call completing rate reduce, even influence the communication performance of whole network.
Summary of the invention
The problem that the present invention solves is only to transmit isup message at signaling link at present domestic technical specification regulation just to need corresponding repeat circuit, cause the waste of relay resource thus, thereby make user's call completing rate reduce, even influence the technical problem of the communication performance of whole network.
Empty relaying technique has been adopted in invention, but empty relaying is to have physically non-existent repeat circuit in logic.Technical solution of the present invention is: at first the management method according to the actual relay circuit increases virtual repeat circuit on switch: increase virtual trunk circuit, be that virtual trunk circuit is configured among the virtual trunk group, configuration comprises the routing number of MSC route at least.All need at least two trunk groups what connect LMCC that each local user may roam into, only comprise real relaying and empty relaying respectively, comprise the circuit group of empty relaying and need be in the data of relay management it be designated empty relaying.When selecting repeat circuit, to determine that selecting real relaying still is empty relaying according to the type (call message is still registered class message) of message, on relaying, select real relaying during transmission information (as speech) when needs, select empty relaying in the time of only need on signaling link, transmitting information.That is:
A kind ofly transmit the method for message based on the No.7 signaling system on signaling link, described system comprises through through signaling link or through the transmitting terminal and the receiving terminal of the point-connected signaling link of signal switching, comprising:
(1) in the switching equipment of transmitting terminal and receiving terminal, set up empty relaying, the CIC sign indicating number of each empty relay distribution correspondence, to empty trunk group, configuration information comprises the routing iinformation of this void relaying correspondence at least with described empty relaying configuration;
(2) transmitting terminal select empty relaying only transmit need be on signaling link message transmitted to described receiving terminal;
(3) after the SCDMA terminal use is moved, realize registration, authentication, shutdown or the switching of user by isup message in the strange land, make the wireless user in the fixed network possess roaming function.
In addition, step (1) also comprises: preestablish and preserve the transmission message format at transmitting terminal and receiving terminal; Step (2) also comprises: the information that transmitting terminal will need to send sends according to predefined message format, when described receiving terminal receives described message, resolves described message according to predefined message format, obtains corresponding information.
Above-mentioned message comprises original parameter or self-defining parameter, or above-mentioned message is the message of self-defining ISUP form.Described message comprises initial address message IAM, and parameter closed user group CUG is standby parameter in the initial address message, can insert the information that needs transmission in the content of this parameter.
Step (2) specifically comprises:
(21) when transmitting terminal only need transmit need be on signaling link during message transmitted, in empty trunk group, obtain an idle empty relaying;
(22) transmitting terminal is included in the CIC sign indicating number of described empty relaying correspondence in the described message and sends, and described receiving terminal receives described message, and finds CIC wherein.
Step (2) also comprises: transmitting terminal selects real relaying to transmit speech information to described receiving terminal.
Wherein, described need message transmitted be registration class message on signaling link only.
Also have, when transmitting terminal and receiving terminal are transmitted message by Signalling Transfer Point, transmit described message at the Message Transfer Part MTP of Signalling Transfer Point layer.
Compared with prior art, the present invention has the following advantages:
When transmitting terminal sends the message that only need transmit on signaling link, additionally do not take the physics repeat circuit, thereby significantly reduced the waste of relay resource, and then improved the utilization rate of physics repeat circuit, also reduced thus when a large number of users and initiated a message, when especially registering class message, take the situation of interoffice junction, also improved the customer call call completing rate simultaneously.
In addition, because information is carried in the client layer agreement, so only need send and can discern the information of carrying with receiving terminal and get final product, middle Signaling Transfer Point can be transmitted (alternate route being set at STP) at MTP (Message Transfer Part) layer, does not therefore need to increase any equipment; All message all is the isup message form of standard, after receiving message can according to the ISUP standard to message content check, error correction; Be applicable to the equipment that all support the NO.7 signaling system, and can be used for similar system solution similar problem, it has certain versatility.
Description of drawings
Fig. 1 is the systematic schematic diagram of a call setup;
Fig. 2 the present invention is based on the No.7 signaling system transmits message on signaling link flow chart;
Fig. 3 is for carrying out a system schematic of user's registration in SCDMA;
Fig. 4 is the effect and the form schematic diagram of AEXP message in the embodiment of the invention;
Fig. 5 is the name encoding of AEXP message in the embodiment of the invention;
Fig. 6 is the user's enrollment process in the SCDMA system.
Embodiment
Below in conjunction with accompanying drawing, specify the present invention.
Regulation according to standard, must comprise legal CIC sign indicating number in the isup message that transmits on the signaling link, consider the physics relaying that a CIC corresponding is concrete, when on relaying, not transmitting any information, cause the consequence of the waste of relay resource easily, therefore the inventor is through concentrating on studies, on the basis of original technology by adopting empty relaying technique to solve the problem that prior art exists.The No.7 signaling system mainly is meant the system that adopts the No.7 signaling standard, the SCDMA system of speaking of in follow-up only is the implementation system that the present invention adopts the No.7 signaling standard, the user that speaks of in follow-up registration only be for better explanation the present invention and for embodiment, be not in order to limit the present invention.
See also Fig. 2, it is to the present invention is based on the No.7 signaling system transmits message on signaling link flow chart, and this system comprises transmitting terminal and the receiving terminal that has through signaling link or the point-connected signaling link of process signal switching, may further comprise the steps:
S110: in the switching equipment of transmitting terminal and receiving terminal, set up empty relaying, and number identify with empty relaying.The CIC sign indicating number of each empty relay distribution correspondence, to empty trunk group, configuration information comprises the routing iinformation of this void relaying correspondence at least with empty relaying configuration.Being provided with of the setting of above-mentioned empty relaying and real relaying is essentially identical, and just empty relaying is set to logic entity, certainly, and the corresponding empty relaying of each CIC sign indicating number, the i.e. corresponding empty relaying of a CIC sign indicating number number.The mapping relations of CIC sign indicating number and empty relaying are identical with the relation of CIC sign indicating number with real relaying.And, all there is corresponding empty relay data on transmitting terminal and the receiving terminal, this void relay data comprises that the cic code of empty relaying is corresponding one by one.
In addition, if transmitting terminal and receiving terminal are to connect by through signaling link, then information is carried in the client layer agreement, only needs receiving terminal can discern the information of carrying and gets final product.If when transmitting terminal and receiving terminal adopted Signaling Transfer Point to transmit data, Signalling Transfer Point can be transmitted at MTP layer (Message Transfer Part), as at STP alternate route being set, concrete repeating process does not repeat them here.Telephone network in this way can be referring to " Chinese inland telephone network No.7 aspect technical specification ".
S120: transmitting terminal select empty relaying only transmit need be on signaling link message transmitted to described receiving terminal.After transmitting terminal and receiving terminal are set up empty relaying, can select to adopt empty relaying or the real relaying of employing according to the type of message when sending message.Usually, if message is only need be on signaling link during message transmitted, transmitting terminal can select empty relaying to send, and comprises the pairing CIC of this empty relaying in message, and receiving terminal is resolved this message, obtains CIC.
Before sending isup message, preestablish and preserve the transmission message format at transmitting terminal and receiving terminal; Such as: when message is utilized original parameter or self-defining parameter or used self-defining isup message to transmit the information that needs transmission, with receiving terminal identical message format need be set, can accurately resolve the message that transmitting terminal sends in order to receiving terminal at transmitting terminal.
And when sending message, the information that transmitting terminal will need to send sends according to predefined message format, when described receiving terminal receives described message, resolves described message according to predefined message format, obtains corresponding information.
By above-mentioned method explanation, when the present invention adopts empty relaying technique to send message as can be known, need not to take the repeat circuit (real relaying) of physics.
More than be that transmitting terminal and the receiving terminal that transmits from a message is that the starting point is considered, but, in real process, be as considering point with whole No.7 signaling system, the way to manage that goes up according to the actual relay circuit at the switching equipment (as switch) of whole system increases empty relaying earlier, empty repeat circuit is configured in the empty trunk group, and then on signaling link, transmits message.
Embodiment
Below be registered as example with the authentication of SCDMA (synchronous CDMA access system) system, specify the present invention.
Be to be that unit increases empty relaying in switching equipment with VDT (relay management unit) in the SCDMA system, each VDT comprises 4 E1.The empty relaying that increases is assigned in the trunk group, and trunk group assigns to route, and these operations are identical with real relaying.Need to guarantee between two LMCC that empty relaying connects through No.7 signaling link is arranged in addition or through the point-connected No.7 signaling link of signal switching, and have corresponding empty relay data (cic code of empty relaying is correspondence one by one) on two LMCC.
In the Business Processing process,, determine that when routing the repeat circuit of selecting is empty relaying or real relaying according to type of message.Such as, this type of message is the speech type, selects real relaying during the selection path so, is registration class message, then selects the empty relaying of a free time during routing in empty trunk group.When sending isup message, the CIC of relaying correspondence inserts in the corresponding message, in isup message with original parameter or self-defining parameter; Perhaps use the information that self-defining isup message transmits to be needed, as long as it is just passable that receiving terminal can be discerned the information that custom parameter carries, for example in IAM (initial address message) message, parameters C UG (closed user group) is a standby parameter, can in the content of this parameter, insert the information that needs transmission, receiving terminal again according to the form that sends with information analysis, finish the transmission of information at two inter-exchanges.Certain this method also can be transmitted information with other No.7 upper-layer protocol such as TUP or SCCP.
See also Fig. 3, it is for carrying out a system schematic of user's registration among the SCDMA.It comprises BSC (base station controller), LMCC-2 and the HLR-2 that HLR-1 (location register), LMCC-1 (local movements control center) are connected with LMCC-1.
At first, before carrying out user's registration, empty relaying is set respectively between the LMCC-1 of system and the LMCC-2, the step that empty relaying is set is narrated in front, does not repeat them here.
Secondly, at LMCC-1 and LMCC-2 message format and the self-defining AEXP message format (seeing also Fig. 4 and Fig. 5) of new IAM are set respectively, to make things convenient for the parsing of message.
Then, just carry out SCDMA user's enrollment process (seeing also Fig. 6):
A:LMCC-1 receives registration (REGNOT) message of the BSC that it is hung down; LMCC-1 resolves the information in the registration message, insert IAM (initial address message) message (for example UID inserts the calling number unit, and LMCCID (ID of LMCC number), BSCID (ID of BSC number) insert in CUG (closed user group) unit) and issue another LMCC-2.
B:LMCC-2 receives that the difference according to type of message decides current ACM (Address Complete Message) message that whether sends immediately behind the IAM, if registration class message then sends ACM immediately.
C:LMCC-2 sends ANM (response message) immediately after sending ACM message, and replys and do not charge;
D:LMCC-2 sends registration message to HLR, and HLR finishes after user's position authentication and the registration, sends the registration response message to LMCC-2, and LMCC-2 sends AEXP (expansion is replied) message to LMCC-1 after receiving response message, transmits the information that registration is replied; LMCC-1 decodes after receiving AEXP message, reads information, behind the group bag response message is sent to BSC again.
E:LMCC-1 sends REL (release message) to LMCC-2 immediately after receiving AEXP
F:LMCC-2 receives behind the REL that to LMCC-1 loopback RLC (Release complete), enrollment process finishes, and discharges the resource of all uses.
IAM message has been to use some parameter in the message to transmit information in the above example, comprises the standby bit and the self-defining parameter (using the closed user swarm parameter, the structure of self-defined this parameter) of the parameter that use has existed; AEXP message is self-defined then, and a piece of news comes transmission information.
More than disclosed only be a specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (8)
1. one kind is transmitted the method for message based on the No.7 signaling system on signaling link, and described system comprises through through signaling link or through the transmitting terminal and the receiving terminal of the point-connected signaling link of signal switching, it is characterized in that, comprising:
(1) in the switching equipment of transmitting terminal and receiving terminal, set up empty relaying, the cic circuit identification code CIC of each empty relay distribution correspondence, to empty trunk group, configuration information comprises the routing iinformation of this void relaying correspondence at least with described empty relaying configuration;
(2) transmitting terminal select empty relaying only transmit need be on signaling link message transmitted to described receiving terminal;
(3) after the SCDMA terminal use is moved, realize registration, authentication, shutdown or the switching of user by isup message in the strange land, make the wireless user in the fixed network possess roaming function.
2. as claimed in claim 1ly on signaling link, transmit the method for message, it is characterized in that based on the No.7 signaling system,
Step (1) also comprises: preestablish and preserve the transmission message format at transmitting terminal and receiving terminal;
Step (2) also comprises: transmitting terminal will need the information that sends to generate message according to predefined message format and send, and the described message that described receiving terminal will receive is resolved described message according to predefined message format, obtains corresponding information.
3. as claimed in claim 2ly on signaling link, transmit the method for message, it is characterized in that described message comprises original parameter or self-defining parameter, or described message is the message of self-defining ISUP form based on the No.7 signaling system.
4. the method that on signaling link, transmits message based on the No.7 signaling system as claimed in claim 3, it is characterized in that, described message comprises initial address message IAM, parameter closed user group CUG is standby parameter in the initial address message, can insert the information that needs transmission in the content of this parameter.
5. as claimed in claim 1 or 2ly on signaling link, transmit the method for message, it is characterized in that also comprise: step (2) specifically comprises based on the No.7 signaling system:
(21) when transmitting terminal only need transmit need be on signaling link during message transmitted, in empty trunk group, obtain an idle empty relaying;
(22) transmitting terminal is included in the CIC sign indicating number of described empty relaying correspondence in the described message and sends, and described receiving terminal receives described message, and finds CIC wherein.
6. as claimed in claim 1ly transmit the method for message based on the No.7 signaling system on signaling link, it is characterized in that step (2) also comprises: transmitting terminal selects real relaying to transmit speech information to described receiving terminal.
7. describedly on signaling link, transmit the method for message as claim 1 or 6, it is characterized in that, describedly only need on signaling link, message transmitted be registration class message based on the No.7 signaling system.
8. the method that on signaling link, transmits message based on the No.7 signaling system as claimed in claim 1, it is characterized in that, also comprise: when transmitting terminal and receiving terminal are transmitted message by Signalling Transfer Point, transmit described message at the Message Transfer Part MTP of Signalling Transfer Point layer.
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| CNB2004100737033A CN100394735C (en) | 2004-09-02 | 2004-09-02 | Method for transmitting news on signalling link based on No.7 signalling system |
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| CNB2004100737033A CN100394735C (en) | 2004-09-02 | 2004-09-02 | Method for transmitting news on signalling link based on No.7 signalling system |
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| CN100394735C true CN100394735C (en) | 2008-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103095474A (en) * | 2011-10-28 | 2013-05-08 | 上海邮电设计咨询研究院有限公司 | Telephone user part (TUP) paired computer implementation method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101150860B (en) * | 2007-10-19 | 2010-12-08 | 中兴通讯股份有限公司 | An inter-office switching method for realizing non circuit data service |
| CN103078851B (en) * | 2012-12-28 | 2016-09-07 | Tcl集团股份有限公司 | Message sink, sending method, message exchange system and DLAN equipment |
| CN108600565B (en) * | 2018-04-24 | 2021-04-20 | 深圳震有科技股份有限公司 | Network system, method and switch for sharing SS7 signaling point by multiple PBXs |
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| WO2001048982A1 (en) * | 1999-12-27 | 2001-07-05 | Telefonaktiebolaget L.M. Ericsson (Publ.) | Methods and systems for connecting telephony exchanges to packet switched networks using virtual trunks |
| CN1492648A (en) * | 2002-10-25 | 2004-04-28 | 华为技术有限公司 | Method for managing and applying call examples |
| CN1635749A (en) * | 2003-12-30 | 2005-07-06 | 华为技术有限公司 | A method for implementing call control |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001048982A1 (en) * | 1999-12-27 | 2001-07-05 | Telefonaktiebolaget L.M. Ericsson (Publ.) | Methods and systems for connecting telephony exchanges to packet switched networks using virtual trunks |
| CN1492648A (en) * | 2002-10-25 | 2004-04-28 | 华为技术有限公司 | Method for managing and applying call examples |
| CN1635749A (en) * | 2003-12-30 | 2005-07-06 | 华为技术有限公司 | A method for implementing call control |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095474A (en) * | 2011-10-28 | 2013-05-08 | 上海邮电设计咨询研究院有限公司 | Telephone user part (TUP) paired computer implementation method |
| CN103095474B (en) * | 2011-10-28 | 2015-08-19 | 上海邮电设计咨询研究院有限公司 | A kind of computer implemented method of TUP message pairing |
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