CN100454871C - Method for channel allocation in QSIG system - Google Patents
Method for channel allocation in QSIG system Download PDFInfo
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- CN100454871C CN100454871C CNB2006100608258A CN200610060825A CN100454871C CN 100454871 C CN100454871 C CN 100454871C CN B2006100608258 A CNB2006100608258 A CN B2006100608258A CN 200610060825 A CN200610060825 A CN 200610060825A CN 100454871 C CN100454871 C CN 100454871C
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Abstract
The related channel allocation method in QSIG system comprises: 1. the calling side selects the desired message channel from all available channels between it and the called side, and sends request containing the desired channel to build connection; 2. the called receives the request, determines the desired channel for itself, and returns response containing the called-side desired channel through the channel; and 3. the calling side receives the response and uses the called-side channel as the primary channel. Wherein, when the D-channel of some physical line fails, it can continue to use other D-channel for signaling interaction, and selects the B-channel on this physical line for communication.
Description
Technical field
The present invention relates to the transmission method of digital information, especially relate to the information channel distribution method in a kind of QSIG system.
Background technology
QSIG (Q Interface Signalling, promptly unified international business net signaling standard, it is called for short QSIG) signaling is to propose a kind of signaling standard between each telephone net node in private network by ECMA (European Computer ManufacturersAssociation, be called for short ECMA) European Computer Manufacture's Association.Fig. 1 is the network application schematic diagram of QSIG agreement.QSIG mainly is provided at PISN (Private Integrated Services Network, abbreviation PISN) phone between the privately owned integrated service network switch of each PINX (Private Integrated services NetworkExchange is called for short PINX) and the IWF of various integrated services in the privately owned switching network.
QSIG is the earliest with reference to ITU-T (International Telecommunication Union, abbreviation ITU-T) ISDN (the Integrated Service DigitalNetwork of International Telecommunications Union, be called for short ISND) the integrated services digital network development, the Digital Subscriber signalling No.1 DSS1 agreement of the similar ISDN of protocol architecture, all follow ISO (The InternationalStandards Organization, be called for short ISO) International Standards Organization's reference model, Fig. 2 is the schematic diagram of QSIG protocol layer.
The professional control of the basic call of QSIG agreement is also very similar to the Q931 agreement of ISDN, and Fig. 3 is a mutual schematic diagram of typical QSIG call progress message.Form by D channel and B channel between PINX, (described D channel is a signalling path, described B channel is an information channel) D channel and the B channel of QSIG can have a lot of bars between adjacent PINX, but in once specific QSIG calling procedure, all be carried on all the time on certain specific D channel with calling out relevant signaling message, be eliminated up to calling.Calling both sides negotiates the B channel (as the B channel on the E1 interface) that both sides agree by the reciprocal process of signaling, communicates on this channel then, and Fig. 3 is the schematic diagram of QSIG call negotiation B channel.The calling party carries the B channel number of wishing use in SETUP message, if the callee agrees that then return the B channel number that he agrees in the message (as Connect message) of response, after the calling party received response, both sides both can communicate on this B channel.In the prior art, the D channel of QSIG and the subordinate relation of B channel are fixed, be that D channel on certain bar physical circuit can only be managed the B channel on this physical circuit, can only manage 30 B channels on this E1 interface as the D channel in a certain the E1 interface, the B channel of this E1 interface can not be again by other D channel management.When the processing of certain bar D channel between the both sides went wrong, the B channel on this physical circuit also just can not be used again, has caused the waste of resource.
Summary of the invention
Technical problem to be solved by this invention is to remedy prior art when the processing of certain bar D channel between the both sides goes wrong, and the defective that the B channel on this physical circuit also just can not be used again proposes method for channel allocation in a kind of QSIG system.
Technical problem of the present invention is solved by the following technical programs: method for channel allocation in a kind of QSIG system comprises the steps:
1) calling party chooses the information channel of calling party's expectation from all information available passages that the calling party is connected with the callee, sends to the callee by signalling path to connect the request of foundation, comprises the information channel of calling party's expectation in the described request;
2) callee receives described request, determines the information channel that the callee expects, returns response by described signalling path, comprises the information channel of callee's expectation in the described response.
3) calling party receives described response, when determine agreeing the information channel of callee's expectation, with the information channel of the callee's expectation information channel as calling and called communication.
Technical problem of the present invention is solved by following further technical scheme:
The information channel of described calling party expectation and described signalling path are on different physical circuits, and/or the information channel expected of described callee and described signalling path are on different physical circuits.
Step 2) information channel of determining callee's expectation described in specifically comprises:
Check the information channel of the calling party's expectation that comprises in the described request, but determine the time spent, with the information channel of described calling party's expectation information channel as callee's expectation.
Also comprise step after the information channel of the calling party that comprises in described inspection described request expectation: when determining that the information channel of described calling party's expectation is unavailable, from information channel that the calling party is connected choose the information channel that the information available passage is expected as the callee.
The calling party receives and also comprises step after the described response in the described step 3):
When the calling party disagrees with the information channel that the callee determines, stop this calling.
The unified numbering of all information channels between calling party and the callee, what carry in described connection foundation request and the described response is the numbering of information channel.
Described information channel be numbered Serial No..
The invention has the beneficial effects as follows: owing to the B channel information that in the D passage, can transmit among the present invention on other physical circuit, the flexibility that has improved Signalling exchange; And when the D of certain bar physical circuit channel breaks down, the B channel is not affected, can continue still to use that the D channel carries out Signalling exchange on other physical circuit, continue to select the B channel on this physical circuit to communicate, guaranteed the B channel resource effectively and make full use of; Further, utilize method of the present invention, can be with all passages on certain bar physical circuit all as the D passage, all passages on certain bar physical circuit are realized separating of signaling and media bearer circuit all as the B passage.
Description of drawings
Fig. 1 is the network application schematic diagram of prior art QSIG agreement;
Fig. 2 is the schematic diagram of prior art QSIG protocol layer;
Fig. 3 is mutual schematic diagram of typical QSIG call progress message of prior art;
Fig. 4 is the schematic diagram of QSIG channel group notion of the present invention;
Fig. 5 is the schematic diagram of the embodiment of the invention one QSIG method for channel allocation;
Fig. 6 is the schematic diagram of the embodiment of the invention two QSIG method for channel allocation;
Fig. 7 is the schematic diagram of the embodiment of the invention three QSIG method for channel allocation;
Fig. 8 is the schematic diagram of the embodiment of the invention four QSIG method for channel allocation.
Embodiment
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
General plotting of the present invention is as follows:
Do not consider the corresponding relation of D channel and B channel on a certain physical circuit, as not considering the corresponding relation of a D channel and 30 B channels on the E1 interface, the notion that is divided into D channel group and B channel group that channel between the adjacent PINX is abstract in logic promptly thinks between the PINX it logically is to be formed by connecting by one group of D channel and one group of B channel.And physically, a certain D channel in the D channel group may be with a certain B channel in the B channel group on a physical circuit.D1 channel and B1 channel are on physical circuit E1-1, and D2 channel and B2 channel are on physical circuit E1-2.After proposing this abstract concept, the corresponding relation of D channel and B channel has just changed, become every B channel in the present B channel group by D channel managements all in the D channel group by the corresponding relation on the original same physical circuit, the B1 channel both can also can be by the D2 channel management by the D1 channel management, specifically by which bar D channel management, both sides consult and set up in calling procedure.When both sides set up calling on selected D path, the information that need in signaling, carry the B path, through both sides' negotiations process, last result can be B1, also can be B2, promptly can be any one or more B path in the B via set.In case consult successfully, the corresponding relation of this D path and B path is just determined, can not change, till calling out release again.Both sides can select identical B path when carrying out new calling procedure, also can select different B paths.So just realized the dynamic assignment of truck.
In order to realize above-mentioned routing policy, need unify numbering to bipartite all B paths, both sides are numbered according to the same number strategy, guarantee that every B path is unique in the numbering of B via set, described numbering can be Serial No., for example, B1 is numbered 1, B2 is numbered 2, and the rest may be inferred, and both sides are numbered according to the same number strategy.Then, consult in the process of B path both sides, carry in the signaling be unified numbering after the B channel number, guarantee either party can both according to the B channel number that consults correct find physically B path, just realized that so also the signalling path on same physical link and information channel can not bind together.
Below be example explanation several embodiments of the present invention with network shown in Figure 4, B path between PINX X and the PINX Y comprises B1, B2, the D path comprises D1, D2, wherein D1 and B1 are on same physical circuit, D2 and B2 are on the another one physical circuit, suppose that PINX X is the calling party, PINX Y is the callee.
Embodiment one: as shown in Figure 5, channel allocation in the QSIG system comprises the steps:
1) calling party chooses the information channel B1 of calling party's expectation from all information available passages that the calling party is connected with the callee, send connection by signalling path to the callee and set up request, the number information that comprises the B1 information channel of calling party's expectation in the described request, wherein said signalling path then is a certain concrete channel of choosing as required in the information channel group, and that supposition is chosen in this example is signalling path D1.
2) callee receives described information, and the information channel of definite callee's expectation, concrete steps are: judge whether selected B1 information channel is available, if it is available, the information channel that the information channel B1 that described calling party is expected expects as the callee, the callee returns response by signalling path D1 to the calling party, and carries the information of the B1 information channel through determining.And B1 is set to seizure condition.
3) calling party receives described response, when determining to agree the information channel of callee's expectation, and the information channel that the information channel B1 that expects with the callee communicates by letter as calling and called.
Embodiment two: as shown in Figure 6, be with embodiment one difference: in step 2) in, unavailable through judging selected B1 information channel, as the situation that the B1 information channel is occupied or damaged appears, then execution in step 4):
4) from information channel that the calling party is connected choose the information channel of information available channel B 2 as callee's expectation.And in the response that the calling party returns, carry the numbering of selected B2 information channel the callee.If the calling party agrees,,, stop this calling if disagree with then direct call release then with the information channel of information channel B2 as calling and called communication.
According to the foregoing description as can be known, described call-signaling message transmits on D1, if the B1 channel is occupied or damaged, whether this moment is no matter damage with the D channel of B2 channel on same physical circuit, the callee can select the B2 channel, if the calling party agrees that then both sides just can communicate with the B2 channel.The B channel status of being chosen by PINX is set to seizure condition.The B channel of promptly consulting successfully back selection both can be also can be and D channel one or several B channel on different physical circuits at one or several B channel on the same physical circuit with the D channel, also can be simultaneously the combination that existing B channel on the same physical circuit also has the B channel on different physical circuits.Whether B passage equipment bottom real-time report B passage by both party is intact, if certain bar B passage damages physically, then just can not use this passage in the QSIG Signalling exchange.
Embodiment three, and as shown in Figure 7, channel allocation in the QSIG system comprises the steps:
31) calling party chooses the information channel B2 of calling party's expectation from all information available passages that the calling party is connected with the callee, send connection by signalling path D1 to the callee and set up request, comprise the number information of the B2 information channel of calling party's expectation in the described request.
32) callee receives described information, and the information channel of definite callee's expectation, concrete steps are: judge whether selected B2 information channel is available, if it is available, the information channel that the information channel B2 that described calling party is expected expects as the callee, the callee returns response to the calling party, and carries the information of the B2 information channel through determining.And B2 is set to seizure condition.
33) calling party receives described response, when determining to agree the information channel of callee's expectation, and the information channel that the information channel B2 that expects with the callee communicates by letter as calling and called.
Embodiment four: as shown in Figure 8, be with embodiment three differences: in step 32) in, unavailable through judging selected B2 information channel, as the situation that the B2 information channel is occupied or damaged appears, then execution in step 44):
44) from information channel that the calling party is connected choose the information channel of information available channel B 1 as callee's expectation.And in the response that the calling party returns, carry the numbering of selected B1 information channel the callee.If the calling party agrees,,, stop this calling if disagree with then direct call release then with the information channel of information channel B1 as calling and called communication.
From these top embodiment as can be seen, the relation of D channel and B channel does not need to fix among the present invention, can transmit the B channel information on other physical circuit in the D passage on certain bar physical circuit, the flexibility that has improved Signalling exchange greatly; And when the D of certain bar physical circuit channel breaks down, the B channel is not affected, can continue still to use that the D channel carries out Signalling exchange on other physical circuit, continue to select the B channel on this physical circuit to communicate, guaranteed the B channel resource effectively and make full use of; Further, utilize method of the present invention, can be with all passages on certain bar physical circuit all as the D passage, all passages on certain bar physical circuit are realized separating of signaling and media bearer circuit all as the B passage.
Claims (7)
1. the method for channel allocation in the QSIG system is characterized in that comprising the steps:
1) calling party chooses the information channel of calling party's expectation from all information available passages that the calling party is connected with the callee, sends to the callee by signalling path to connect the request of foundation, comprises the information channel of calling party's expectation in the described request;
2) callee receives described request, determines the information channel that the callee expects, returns response by described signalling path, comprises the information channel of callee's expectation in the described response;
3) calling party receives described response, when determine agreeing the information channel of callee's expectation, with the information channel of the callee's expectation information channel as calling and called communication.
2. method according to claim 1 is characterized in that: the information channel of described calling party expectation and described signalling path are on different physical circuits, and/or the information channel expected of described callee and described signalling path are on different physical circuits.
3. method according to claim 1 is characterized in that step 2) described in determine that the information channel of callee's expectation specifically comprises:
Check the information channel of the calling party's expectation that comprises in the described request, but determine the time spent, with the information channel of described calling party's expectation information channel as callee's expectation.
4. method according to claim 3 is characterized in that, also comprises step after the information channel of the calling party's expectation that comprises in the described inspection described request:
When determining that the information channel of described calling party expectation is unavailable, from information channel that the calling party is connected choose the information channel that the information available passage is expected as the callee.
5. method according to claim 1 is characterized in that, the calling party receives and also comprises step after the described response in the described step 3): when the calling party disagrees with the information channel that the callee determines, stop this calling.
6. according to each described method of claim 1 to 5, it is characterized in that, the unified numbering of all information channels between calling party and the callee, what carry in described connection foundation request and the described response is the numbering of information channel.
7. method according to claim 6 is characterized in that, described information channel be numbered Serial No..
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100608258A CN100454871C (en) | 2006-05-19 | 2006-05-19 | Method for channel allocation in QSIG system |
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| CNB2006100608258A CN100454871C (en) | 2006-05-19 | 2006-05-19 | Method for channel allocation in QSIG system |
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| CN100454871C true CN100454871C (en) | 2009-01-21 |
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| CN101237406B (en) * | 2008-02-29 | 2011-12-07 | 中兴通讯股份有限公司 | A realization method for D channel link access regulation |
| CN110635857A (en) * | 2018-06-22 | 2019-12-31 | 鹤壁天海电子信息系统有限公司 | Cross-channel calling method and device and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1330848A (en) * | 1998-10-15 | 2002-01-09 | 高通股份有限公司 | Reservation multiple access |
| WO2002021380A1 (en) * | 2000-09-08 | 2002-03-14 | United States Postal Service | Systems and methods for soliciting secondary information while maintaining access to primary information |
| US20020037715A1 (en) * | 1998-06-15 | 2002-03-28 | Sbc Technology Resources, Inc. | Enhanced wireless handset, including direct handset-to-handset communication mode |
| US20050091392A1 (en) * | 2001-12-21 | 2005-04-28 | Lothar Gesswein | Method and device for codec negotiation |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020037715A1 (en) * | 1998-06-15 | 2002-03-28 | Sbc Technology Resources, Inc. | Enhanced wireless handset, including direct handset-to-handset communication mode |
| CN1330848A (en) * | 1998-10-15 | 2002-01-09 | 高通股份有限公司 | Reservation multiple access |
| WO2002021380A1 (en) * | 2000-09-08 | 2002-03-14 | United States Postal Service | Systems and methods for soliciting secondary information while maintaining access to primary information |
| US20050091392A1 (en) * | 2001-12-21 | 2005-04-28 | Lothar Gesswein | Method and device for codec negotiation |
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