CN1953565A - A route update method for No.7 signalling system - Google Patents
A route update method for No.7 signalling system Download PDFInfo
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Abstract
The invention relates to a route refresh method used in seven signal system. Wherein. It uses circulate distribute theory to distribute the relationship between SLS and LinkNo to set the stable route list, to generate initial dynamic route list; when the signal chain is changed into unavailable state, the signal service manage function will start switch process; said switch process comprises that selecting replace chain and using circulate replace theory to refresh the dynamic route list; when the signal chain is changed into available state, the signal service manage function will start back process, to use stable route list to refresh the dynamic route list. The invention can share the load of signal chain when the seven signal system is normal or abnormal, to improve its property.
Description
Technical field
The present invention relates to signaling network functions level (Message Transfer Part3) (hereinafter to be referred as MTP3) part of No.7 signalling system, relate in particular to a kind of route renewing method of No.7 signalling system.
Background technology
No.7 signalling system is the computer communication system of a special use, is a kind of common channel signalling system of International standardization, and this system is used for transmitting between the signalling point in communication network the control information of relevant communication network.Above-mentioned No.7 signalling system adopts the thought of layered communication architecture, and the function of communicating by letter is divided into 4 levels.Be illustrated in figure 1 as the structure chart of No.7 signalling system, the quaternary structure of No.7 signalling system is divided into Message Transfer Part (Message Transfer Part) (hereinafter to be referred as MTP) and User Part (User Part) (hereinafter to be referred as UP), and wherein MTP is made up of signaling data link level (being called for short MTP1), signaling link level (being called for short MTP2), MTP3.The function of MTP is correctly to transmit signaling message between each signalling point in an orderly manner.
MTP3 international communication standard agreement ITU-T Q.704 in regulation comprise that signaling message is handled and two parts of signaling network management, wherein signaling message is handled and is comprised that message is differentiated and message is distributed two parts.Signalling point is in the route of certain and its direct-connected signalling point, signalling route option code (Signal Link Select) (hereinafter to be referred as SLS) by every message is selected No. seven available links, wherein international communication standard agreement ITU-T Q.704 regulation SLS be 4, thereby realize the load sharing of signaling traffic.So-called load sharing is exactly that all signaling traffics can balanced send to destination signaling point on the signaling link of all upstates.For the detailed process of MTP3 processing signaling message as shown in Figure 2, the UP of No.7 signalling system sends signaling message to MTP3, and the signaling link that the SLS of the message routing module of MTP3 by signaling message chooses a upstate sends to destination signaling point with signaling message.
In addition, international communication standard agreement ITU-T Q.704 in the regulation, when signaling link becomes down state by upstate for a certain reason, signaling traffic management functions will start reversed process, reversed process can be carried out in unavailable link group, also can in replacing link group, carry out, its objective is that assurance transfers to one or more to the signaling traffic that this signaling link transmitted and replace on the link, and guarantee that as far as possible signaling message do not lose, repeat and incorrect order, but Q.704 international communication standard agreement ITU-T does not stipulate specifically how to select to replace link, upgrade route, realize reversed process; Equally, when signaling link becomes upstate by down state, signaling traffic management functions is refunded process with startup, its objective is that assurance rotates back into signaling traffic on the signaling link that becomes upstate from replacing link, and should guarantee as far as possible that signaling message is not lost, repetition or incorrect order, Q.704 same international communication standard agreement ITU-T is not defined in how to upgrade route in the process of refunding yet.Fig. 3 switches to refund the selection course figure that replaces link, its detailed process is: if the A signalling point becomes down state to the signaling link 1 of B signalling point, to select to replace link this moment in the signaling link of remaining upstate to the B signalling point, and error-free the signaling traffic on the signaling link of down state, transfer on the replacement link and send to destination signaling point in an orderly manner; If signaling link 1 has become upstate again, also must determine which replaces link by has born its signaling traffic this moment, adopt certain route renewing method to be updated to the route of B signalling point simultaneously, all signaling traffics of being born by original signaling link are rotated back on the signaling link that becomes upstate with assurance.
Many patent applications about No.7 signalling system are arranged at present, as application number is that 99127400 Chinese patent " signal service routing method that is used for the No. 7 signaling network link group " and application number are 02120807 Chinese patent " a kind of method of transit point in number 7 signaling being carried out multipoint encoding and load sharing ", but the deficiency of existing method be find do not know after replacing link this how more new routing information just can reach best effect.
Summary of the invention
In view of above-mentioned, the objective of the invention is to propose a kind of route renewing method that is used for No.7 signalling system.The present invention on the basis of existing technology, switch in the process of refunding at link, realize a kind of route renewing method, make some signaling link break down and fault recovery after, can both realize the load sharing of No. seven links, thereby improve the performance of system.
In Signaling System Number 7 net management process of the present invention, when signaling link becomes down state by upstate for a certain reason, signaling traffic management functions will start reversed process, its objective is that assurance transfers to one or more to the signaling traffic that this signaling link transmitted and replace on the link, and guarantee as far as possible that signaling message is not lost, repetition and incorrect order, be updated to the routing table of destination signaling point simultaneously; Equally, when signaling link becomes upstate by down state, signaling traffic management functions is refunded process with startup, its objective is that assurance rotates back into signaling traffic on the signaling link that becomes upstate from replacing link, and should guarantee as far as possible that signaling message is not lost, repetition or incorrect order, be updated to the routing table of destination signaling point simultaneously.
For achieving the above object, a kind of route renewing method that is used for No.7 signalling system of the present invention comprises the steps:
Step 1: adopt the cycle assignment principle to distribute the corresponding relation of SLS and link No. (hereinafter to be referred as LinkNo) to come the configuring static routing table, and generate initial dynamic routing table according to this static routing table;
Step 2: when the state of signaling link changes for a certain reason, judge whether above-mentioned signaling link becomes down state by upstate, if, then signaling traffic management functions starts reversed process, and wherein this reversed process comprises that selecting replacement link and employing circulation to replace principle upgrades above-mentioned dynamic routing table; Otherwise execution in step 3;
Step 3: when above-mentioned signaling link became upstate by down state, above-mentioned signaling traffic management functions started the process of refunding, and adopted contrast static routing table principle to upgrade the above-mentioned dynamic routing table that principle is upgraded of replacing by circulating.
Wherein, what above-mentioned static routing table was deposited is link information initial between adjacent signaling points, and its content comprises SLS and the pairing LinkNo of this SLS, and wherein this static routing table is usually by human configuration, remove non-artificial increase or deletion link, otherwise the content of this static routing table can not change.Above-mentioned SLS international communication standard agreement ITU-T Q.704 in regulation account for 4, be used for when signaling link is selected the realization load sharing; In message routing process, owing to transmit the reliability requirement of signaling message, the route that arrive destination signaling point usually is one or more signaling link of correspondence always, specifically uses which bar signaling link, then determines according to the mode of load sharing that SLS adopts.The load sharing mode of No.7 signalling system has two kinds: a kind of is load sharing in same link group, it is usually according to certain principle (the present invention adopts the cycle assignment principle), signaling traffic load is assigned to as far as possible equably on the signaling link of upstate of same link group (the signaling link travel permit number that can be provided with in the common link group is not more than 16); Another kind is the load sharing between different link group, if a plurality of (being not more than 2 usually) link group is just arranged to same signalling point, then the signaling link in these a plurality of link group is used as load sharing together.The present invention adopts the second way to carry out load sharing, but all signaling links are still adopted cycle assignment principle configuring static routing table.
Above-mentioned cycle assignment principle is exactly in the above-mentioned static routing table of initial configuration, in order to make every pairing SLS number of signaling link identical as far as possible, adopt the principle of cycle assignment to come the configuring static routing table to the corresponding respectively LinkNo of above-mentioned SLS from 0 to 15.
Above-mentioned dynamic routing table be exactly above-mentioned No.7 signalling system in running, some signaling link becomes down state or becomes upstate again from down state and cause route changing and the routing table that regenerates.The content of wherein initial dynamic routing table is consistent with the content of above-mentioned static routing table, and MTP3 is the present dynamic routing table for what transmit that signaling message chooses reference in the direct-connected signalling point link process.
Wherein, the replacement of the selection in the above-mentioned steps 2 link comprises:
Whether the link group of judging the signaling link place that becomes down state earlier has the signaling link that is in upstate, if have the signaling link of upstate and its to dispose in above-mentioned static routing table, then the signaling link of above-mentioned these upstates is just as the replacement link of the signaling link of above-mentioned down state;
If the link group at the signaling link place of above-mentioned down state has not had the signaling link of upstate, then select the replacement link of the active link of other link group of route under the signaling link of above-mentioned down state as the signaling link of above-mentioned down state;
If above-mentioned other link group do not have the replacement link of active link as the signaling link of above-mentioned down state yet, then under the signaling link of above-mentioned down state, select the link group of the replacement route of route.
It is exactly all replacement links of selecting to be upgraded circularly the signaling link of the down state in the dynamic routing table in the above-mentioned steps 1 that principle is replaced in circulation in the above-mentioned steps 2.The corresponding signaling link of SLS is uniform relatively in the employing circulation replacement dynamic routing table that principle generated, the load sharing when so just having realized by SLS selection link.
In addition, above-mentioned steps 3 comprises the steps:
Step 301: which was replaced link and has born its signaling traffic in the reversed process when signaling link became down state when determining beginning, all signaling traffics of being born by original signaling link was refunded guaranteeing;
Step 302: adopt contrast static routing table principle to upgrade the above-mentioned dynamic routing table that upgrades by circulation replacement principle.
Wherein, above-mentioned steps 302 comprises the steps:
Step 311: replace the dynamic routing table clear 0 that principle is upgraded with above-mentioned by circulation earlier;
Step 312: the signaling link that will become effectively then is configured in above-mentioned clear 0 the dynamic routing table according to the numbering at above-mentioned static routing table;
Step 313: and then the corresponding position that does not also become effective signaling link in the dynamic routing table that above-mentioned static routing table and above-mentioned steps 312 obtains disposes effective signaling link circularly.So just can accomplish the even distribution of signaling link layout of the upstate of signalling point as much as possible, thereby reach the even distribution of signaling traffic.
Adopt the method for the invention, can solve effectively when signaling link and become down state by upstate, after perhaps becoming upstate, can both make the load sharing of signaling traffic on signaling link that is transmitted, thereby improve systematic function from down state.
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.For those skilled in the art that, from the detailed description to the inventive method, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the structure chart of No.7 signalling system;
Fig. 2 is the procedure chart of MTP3 processing signaling message;
Fig. 3 switches to refund the procedure chart of selecting of replacing link;
Fig. 4 is the routing update flow chart of the method for the invention.
Embodiment
Below in conjunction with accompanying drawing, the concrete enforcement of the method for the invention is described in further detail.
In Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access) (hereinafter to be referred as WCDMA) R99 system, No.7 signalling system is adopted in signaling transmission between third generation partner program (the 3rd Generation PartnershipProject is called for short 3GPP) standard protocol specifies radio network controller (Radio NetworkController) (hereinafter to be referred as RNC) and the core net (Core Network) (hereinafter to be referred as CN).Wherein RNC has and controls its local Radio Resource, and effect provides all professional Service Access points to CN; CN is responsible for speech and data service exchanges and route querying, so that business is connected to external network.Please refer to Fig. 4 below, and in conjunction with the WCDMA mobile network, the concrete implementation step that adopts the method for the invention among the WCDMA mobile network between the RNC and CN be described:
The first step, suppose that RNC and CN adopt direct-connected mode, its two ends hypothesis disposes 4 No. seven links 1,2,3,4 (as shown in Figure 3), and they belong to same link group LinkSetl, each link is all effective when initial, the content of RNC side static routing table 0 adopts the cycle assignment principle to distribute the corresponding relation of SLS and LinkNo so, and the result is shown in table 0, and every pairing SLS number of link is nearly all equal; Dynamic routing table 1 when initial generates according to static routing table, and content is as shown in table 1;
Table 0
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 |
Table 1
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 |
Second step, if LinkNo=1 breaks down, then this moment, link 1 became down state from upstate, signaling traffic management functions will start reversed process, at first, look for the replacement link of link 1, because in the link group LinkSetl at link 1 place, available link is arranged, so just in link group LinkSetl, select all active links 2,3,4 replacement links as link 1, and adopt circulation to replace principle and upgrade dynamic routing 1, just first link 1 usefulness link 2 in the his-and-hers watches 1 replaces, second link 1 usefulness link 3 replaces, the 3rd link 1 usefulness link 4 replaces, so circulation, thereby generate dynamic routing table 2, content is as shown in table 2;
Table 2
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 2 | 2 | 3 | 4 | 3 | 2 | 3 | 4 | 4 | 2 | 3 | 4 | 2 | 2 | 3 | 4 |
The 3rd step, if link 3 breaks down again, the replacement link that adopting uses the same method can determine link 3 is a link 2,4, the signaling traffic of link 3 former carryings is now by 2,4 link bearer, adopt circulation to replace principle and upgrade dynamic routing 2, promptly first link 3 usefulness the links 2 in the his-and-hers watches 2 replace, second link 3 usefulness link 4 replace like this circulation, thereby generate dynamic routing table 3, content is as shown in table 3;
Table 3
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 2 | 2 | 2 | 4 |
In the 4th step, if link 1 reverts to upstate again, then this moment, signaling traffic management functions started the process of refunding; Replacement link when link 2,3,4 becomes down state for link 1, earlier with clear 0 (shown in the contents table 4) of dynamic routing table 2 (i.e. table 2), sequence number contrast static routing table with available link is filled in the dynamic routing table 4 (i.e. table 4) then, generates dynamic routing table 5, and content is as shown in table 5; Remaining link is that 0 place adopts circulation to replace principle with available link to upgrade in the his-and-hers watches 5 then, and promptly first 0 usefulness link 1 replaces, and second 0 usefulness link 2 replaces, the 3rd 0 usefulness link 4 replaces, so circulation, thus dynamic routing table 6 generated, and content is as shown in table 6;
Table 4
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 5
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 1 | 2 | 0 | 4 | 1 | 2 | 0 | 4 | 1 | 2 | 0 | 4 | 1 | 2 | 0 | 4 |
Table 6
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 1 | 2 | 1 | 4 | 1 | 2 | 2 | 4 | 1 | 2 | 4 | 4 | 1 | 2 | 1 | 4 |
In the 5th step, if link 3 reverts to upstate again, then signaling traffic management functions starts the process of refunding; Replacement link when link 2,4 begins to become down state for link 3; With clear 0 (content is as shown in table 4) of dynamic routing table 3 (i.e. table 3), check that then the available link of this moment is a link 1,2,3,4 earlier, then contrast static routing table, upgrade dynamic routing table 4 (i.e. table 4), thereby generate dynamic routing table 7, content is as shown in table 7.
Table 7
| Sls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| LinkNo | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 | 1 | 2 | 3 | 4 |
In conjunction with above-mentioned dynamic routing table 1,2,3,5,6,7 and above process as can be seen, no matter be under the normal situation of signaling link, still some signaling link becomes down state, and in the process of recovering again, it is balanced all the time that link in the dynamic routing table distributes, and this has just realized the load sharing of No.7 signalling system.
More than describe operation principle of the present invention in detail, but the example of this visualization of just lifting for the ease of understanding should not be considered to be limitation of the scope of the invention.Equally; the ordinary skill of technical field all can be according to the description of technical scheme of the present invention and preferred embodiment thereof under any; make various possible being equal to and change or replacement, but all these changes or replacement all should belong to the protection range of claim of the present invention.
Claims (8)
1, a kind of route renewing method that is used for No.7 signalling system is characterized in that comprising the steps:
Step 1: adopt the corresponding relation of cycle assignment principle assignment signalling link selection code and link No. to come the configuring static routing table, and generate initial dynamic routing table according to this static routing table;
Step 2: when the state of signaling link changes, judge whether above-mentioned signaling link becomes down state by upstate, if, then signaling traffic management functions starts reversed process, and wherein this reversed process comprises that selecting replacement link and employing circulation to replace principle upgrades above-mentioned dynamic routing table; Otherwise execution in step 3;
Step 3: when above-mentioned signaling link became upstate by down state, above-mentioned signaling traffic management functions started the process of refunding, and adopted contrast static routing table principle to upgrade the above-mentioned dynamic routing table that principle is upgraded of replacing by circulating.
2, method according to claim 1, what it is characterized in that above-mentioned static routing table deposits is link information initial between adjacent signaling points, its content comprises signaling link selection and the pairing link No. of this signaling link selection, wherein this static routing table is usually by human configuration, remove non-artificial increase or deletion link, otherwise the content of this static routing table can not change.
3, method according to claim 1, it is characterized in that above-mentioned cycle assignment principle is exactly in the above-mentioned static routing table of initial configuration, to above-mentioned signaling link selection from 0 to 15 respectively link corresponding number adopt the principle of cycle assignment to come the configuring static routing table.
4, method according to claim 1, it is characterized in that above-mentioned dynamic routing table be exactly above-mentioned No.7 signalling system in running, some signaling link becomes down state or becomes upstate again from down state and cause route changing and the routing table that regenerates; The content of wherein initial dynamic routing table is consistent with the content of above-mentioned static routing table.
5, method according to claim 1 is characterized in that the selection replacement link in the above-mentioned steps 2 comprises:
Whether the link group of judging the signaling link place that becomes down state earlier has the signaling link that is in upstate, if have the signaling link of upstate and its to dispose in above-mentioned static routing table, then the signaling link of above-mentioned these upstates is just as the replacement link of the signaling link of above-mentioned down state;
If the link group at the signaling link place of above-mentioned down state has not had the signaling link of upstate, then select the replacement link of the active link of other link group of route under the signaling link of above-mentioned down state as the signaling link of above-mentioned down state;
If above-mentioned other link group do not have the replacement link of active link as the signaling link of above-mentioned down state yet, then under the signaling link of above-mentioned down state, select the link group of the replacement route of route.
6, method according to claim 1 is characterized in that it is exactly all replacement links of selecting to be upgraded circularly the signaling link of the down state in the dynamic routing table in the above-mentioned steps 1 that principle is replaced in circulation in the above-mentioned steps 2.
7, method according to claim 1 is characterized in that above-mentioned steps 3 comprises the steps:
Step 301: which was replaced link and has born its signaling traffic in the reversed process when signaling link became down state when determining beginning;
Step 302: adopt contrast static routing table principle to upgrade the above-mentioned dynamic routing table that upgrades by circulation replacement principle.
8, method according to claim 7 is characterized in that above-mentioned steps 302 comprises the steps:
Step 311: replace the dynamic routing table clear 0 that principle is upgraded with above-mentioned by circulation earlier;
Step 312: the signaling link that will become effectively then is configured in above-mentioned clear 0 the dynamic routing table according to the numbering at above-mentioned static routing table;
Step 313: and then the corresponding position that does not also become effective signaling link in the dynamic routing table that above-mentioned static routing table and above-mentioned steps 312 obtains disposes effective signaling link circularly.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101110718B (en) * | 2007-08-22 | 2010-08-18 | 中兴通讯股份有限公司 | Self-adapting chain circuit detecting method and device thereof |
| CN101217354B (en) * | 2008-01-21 | 2010-12-08 | 中兴通讯股份有限公司 | A selecting method of processing unit in distributed system |
| CN102006233A (en) * | 2010-11-29 | 2011-04-06 | 中兴通讯股份有限公司 | Routing method and device |
| CN106331899A (en) * | 2016-08-26 | 2017-01-11 | 大连环宇移动科技有限公司 | Noninductive tandem connection processing method for No.7 signaling network |
| CN107306224A (en) * | 2016-04-19 | 2017-10-31 | 华为技术有限公司 | A kind of routed path update method and network administration apparatus |
| CN111107110A (en) * | 2015-01-18 | 2020-05-05 | Lg电子株式会社 | Broadcast signal transmission apparatus, broadcast signal reception apparatus, and methods thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100201939B1 (en) * | 1995-12-15 | 1999-06-15 | 윤종용 | Signal link selection method of exchange sysytem |
| KR100320907B1 (en) * | 1999-05-06 | 2002-02-04 | 서평원 | signal traffic routing method of NO.7 signaling |
| CN1265577C (en) * | 2002-05-31 | 2006-07-19 | 华为技术有限公司 | Method of multipoint encoding and load sharing for transit point in number 7 signaling |
| EP1389879B1 (en) * | 2002-08-16 | 2005-06-08 | Siemens Aktiengesellschaft | Load sharing in SS7 networks |
| WO2005052743A2 (en) * | 2003-11-20 | 2005-06-09 | Tekelec | Methods and systems for message transfer part (mtp) load sharing using mtp load sharing groups |
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2005
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101110718B (en) * | 2007-08-22 | 2010-08-18 | 中兴通讯股份有限公司 | Self-adapting chain circuit detecting method and device thereof |
| CN101217354B (en) * | 2008-01-21 | 2010-12-08 | 中兴通讯股份有限公司 | A selecting method of processing unit in distributed system |
| CN102006233A (en) * | 2010-11-29 | 2011-04-06 | 中兴通讯股份有限公司 | Routing method and device |
| CN102006233B (en) * | 2010-11-29 | 2015-08-12 | 中兴通讯股份有限公司 | route selection method and device |
| CN111107110A (en) * | 2015-01-18 | 2020-05-05 | Lg电子株式会社 | Broadcast signal transmission apparatus, broadcast signal reception apparatus, and methods thereof |
| US11343005B2 (en) | 2015-01-18 | 2022-05-24 | Lg Electronics Inc. | Broadcast signal transmission apparatus, broadcast signal receiving apparatus, broadcast signal transmission method, and broadcast signal receiving method |
| CN111107110B (en) * | 2015-01-18 | 2022-12-30 | Lg电子株式会社 | Broadcast signal transmission apparatus, broadcast signal reception apparatus, and methods thereof |
| CN107306224A (en) * | 2016-04-19 | 2017-10-31 | 华为技术有限公司 | A kind of routed path update method and network administration apparatus |
| CN107306224B (en) * | 2016-04-19 | 2020-08-14 | 华为技术有限公司 | Routing path updating method, network management device and routing equipment |
| CN106331899A (en) * | 2016-08-26 | 2017-01-11 | 大连环宇移动科技有限公司 | Noninductive tandem connection processing method for No.7 signaling network |
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