CN1132494C - Method for narrowband switching node to transmit useful and signaling information via broadband network - Google Patents
Method for narrowband switching node to transmit useful and signaling information via broadband network Download PDFInfo
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- CN1132494C CN1132494C CN 98812590 CN98812590A CN1132494C CN 1132494 C CN1132494 C CN 1132494C CN 98812590 CN98812590 CN 98812590 CN 98812590 A CN98812590 A CN 98812590A CN 1132494 C CN1132494 C CN 1132494C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5614—User Network Interface
- H04L2012/5618—Bridges, gateways [GW] or interworking units [IWU]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/563—Signalling, e.g. protocols, reference model
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5663—Support of N-ISDN
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
A transition unit (IWU) integrated in a narrowband switching node (SVK1) is provided to split a trunk group of narrowband useful channels (SN) for the transmission of useful information to other target narrowband communication devices (SVK2, SVK3) connected to the broadband network (ATM) into target-specific partial trunk groups. By directly accessing the signaling information in the node, the integrated transition unit (IWU) can easily allocate its target-specific segments to the partial trunk groups and convert them into narrowband signaling channels which are respectively included in the partial trunk groups.
Description
The present invention relates to a kind ofly be used to set up and remove the narrow band switching node that the arrowband is connected, this node can be connected on the broadband network through a crosspoint, and the present invention relates to useful information and signaling information are transferred to the method that is connected other the target-narrow-band communication equipments on it from the narrow band switching node through broadband network.At this moment, for example the Broadband Terminal Equipment of narrow band switching node, narrowband terminal equipment or simulation (emulation) narrowband terminal equipment is suitable for as target-narrow-band communication equipments.
According to known systems, narrow-band communication equipments can be networked, and promptly can connect each other, and its mode is: promptly they are through crosspoint, and so-called crosspoint (IWU) is connected on the broadband network.Broadband network has the high-transmission capacity usually, and has available data transmission channel of a plurality of whiles to arrange for the narrow-band communication equipments that connects.
Hitherto known transmission unit is connected to attached narrow-band communication equipments through an arrowband interface respectively, and is connected on the broadband network through a broadband interface.Except adapting to various host-host protocols, crosspoint has task the PCM-30 circuit that the trunk group of the narrow band channel of importing from the narrow-band communication equipments that connects for example has 30 B channels and a D channel is divided into a plurality of sub-trunk groups, and this a little trunk group is distributed on other the target-narrow-band communication equipments that is connected on the broadband network separately.Sub-trunk group is used for useful information and signaling information are transferred to target-narrow-band communication equipments of distributing to them separately, and transmits on pseudo channel respectively through broadband network.This technology usually is also referred to as the fraction backbone, and at file " ATM-ForumStandaTds (asynchronous transfer mode forum standard) Circuit Emulation ServiceInteroperability Specification (circuit emulation service interoperability specification) af-vtoa-0078.000 ", describe in the 8-16 page or leaf in January, 1997.
The problem that exists to the original trunk group grouping of narrow band channel the time: to the arrowband signaling channel of each sub-trunk group from original trunk group, the D channel of PCM30 circuit for example obtains the arrowband signaling channel of a transmission objectives special use.Transmission unit must filter out the signaling information into each transmission objectives special use from original arrowband signaling information in addition, and converts arrowband separation, that distribute to each sub-trunk group signaling channel to.This process is normally extremely expensive, because original for this reason arrowband signaling channel must be analyzed the 3rd protocol layer at least to OSI-reference model (exchange layer).
If additional signaling information in it, the information of the information of functional character control or route guiding for example, then the analysis of arrowband signaling channel becomes extremely difficult.Analyze in this case require usually to further, the understanding of the protocol layer of purpose special use, and these protocol layers may belong to a plurality of different, answer the specialized protocol of individual processing separately.Usually can not provide transmission unit to arrange the specialized protocol that all are used in narrowband network.
Task of the present invention is: provide the narrow band switching node is connected to a kind of on the broadband network installs and provide a kind of method that useful information and signaling information is transferred to other the target-narrow-band communication equipments that is connected with broadband network from the narrow band switching node, these require low cost to come processing signaling information separately.
This task of the present invention is installed and is solved by a kind of method with claim 2 feature by having a kind of of claim 1 feature.
Useful expansion of the present invention is stated in appended claims.
One crosspoint is integrated into the narrow band switching intranodal in the following manner, the signaling information that this mode allows crosspoint also can exist the agreement of using according to intranodal carries out access, and this information is that known, not integrated crosspoint is an inaccessible according to this form so far.Especially signaling information is before the signaling protocol according to common multilayer is transformed into the arrowband signaling channel, and this integrated crosspoint can carry out access to the transmission objectives private part of signaling information.
The part of intranodal signaling information is described the distribution of the useful channel in arrowband to the different target-narrow-band communication equipments that is connected to broadband network.This message part can avoided analyzing and processing under the complicated signaling protocol situation by crosspoint.It can be used for determining that the trunk group of the useful channel in arrowband is divided into the sub-trunk group of respectively distributing to target-narrow-band communication equipments.Here sub-trunk group also can only be made up of a useful channel in single arrowband or be vacant fully.
One of the intranodal signaling information includes with the part of message transmission to transmission objectives, and transmission objectives is distributed to by the assignment information of intranodal in single usually meaning ground.Rely on the assignment information crosspoint of this intranodal can plain mode to be the distribution portion separately of each transmission objectives identification signaling information.This is identified part and is selected by crosspoint, and is transferred to the arrowband signaling channel of separation respectively, the sub-trunk group under these channels add to respectively.Sub-subsequently trunk group is transferred to virtual broad-band channel by crosspoint, and is transferred on target-narrow-band communication equipments of distributing to them through broadband network.
Equally, for the controlled function feature or for Route Selection, the predetermined portions of signaling information can rely on the assignment information of governable intranodal, exclusively handles with simple mode transmission objectives.
According to useful enforcement structure of the present invention, in crosspoint in logic and port assignment physically give target-narrow-band communication equipments, and therefore distribute to sub-trunk group.Therewith correspondingly, should be transferred to the useful information and the signaling information of target-narrow-band communication equipments, relevant ground with port promptly is transferred to crosspoint with the assignment information of the relevant port of identification.Because at many hitherto known narrow band switching intranodals, the transmission of useful information and the signaling information relevant with port is provided, so that the narrowband network assembly of control peripheral hardware, implement the structure of the existing known narrow band switching node of intervention that structure can be correspondingly few and realize for of the present invention.
Be used for transmitting the virtual wide-band channel of the useful information and the signaling information of each sub-trunk group, can be ready in many ways through broadband network.
For single sub-trunk group, respectively at least one has the permanent pseudo channel of definite bandwidth, for example manages by broadband network and sets up.An advantage of the permanent pseudo channel of setting up is: its whole transmission capacity is at any time directly can be for domination.
As long as broadband network provides this possibility, according to the 1st scheme, the bandwidth of the permanent pseudo channel of setting up also can be according to the requirement of crosspoint dynamically to the Data Matching in single sub-trunk group planted agent transmission.
The 2nd scheme regulation: when only in single sub-trunk group, useful information and signaling information occurring, for example, require at least one pseudo channel to be used for each target-narrow-band communication equipments by crosspoint by according to agreement broadband signalling Q.2931.In addition, in the address, broadband of crosspoint internal object-narrow-band communication equipments, for example address E.164 must be known, and distribute to the port of sub-trunk group and/or each logic OR physics separately.
According to the ready pseudo channel of two schemes, each only occupies useful information or the required interior bandwidth of broadband network of signaling information that is actually the existing existence of transmission, and this especially causes the saving greatly of expense when utilizing the public broadband network.Yet will postpone transfer of data momently by required requirement in advance to bandwidth or pseudo channel.Crosspoint can be obtained required separately bandwidth from the intranodal signaling information.
The method of above-mentioned preparation pseudo channel also can combination with one another.So the pseudo channel of the permanent foundation of fixed-bandwidth can provide the base load that is mainly used in the transmission data.And seek help from the pseudo channel of answering Dynamic matching or requirement for the peak load of transmitting of short duration appearance.
Newly setting up the problem that exists when useful data is connected to target-narrow-band communication equipments be; The useful information that on transmission objectives, arrives in newly-established pseudo channel, correctly distribute to be used for this useful data connect be provided with, in advance by at the two sub-trunk groups that connect the useful channel in arrowband of the harmonious transmission objectives of signaling information exchange between the partners.Especially this problem is appearring when a plurality of newly-established pseudo channel useful informations arrive at.
A solution of this problem is: single consciousness is not used to set up the information word that former signaling that useful data connects connects, and the calling benchmark that for example so-called signaling connects preferentially is transferred to transmission objectives in newly-established pseudo channel.Therefore, newly-established pseudo channel can be distributed to the connection of former signaling with singly anticipating and therefore distribute at this useful data is connected sub-trunk group compatible in the signaling connection procedure.
To this another program is each identifying information, for example by the numbering of sub-trunk group, can distribute to the sub-trunk group of all narrow-band communication equipments of networking each other regularly.This identifying information is transferred to the crosspoint of relevant target-narrow-band communication equipments through the pseudo channel of a broadband network when connecting.Therefore the sub-trunk group under this crosspoint is distributed to the single meaning of the broadband connection that arrives ground, and therefore especially the arrowband signaling channel is distributed in the same sub-trunk group but the useful channel in arrowband that may transmit through other pseudo channel.
The present invention is described in detail with reference to the accompanying drawings with an embodiment.
This illustrates a communication network that constitutes through the narrow band switching node of the networking of the atm network shown in the sketch by three.
Three narrow band switching node SVK1 of simple expression in figure, SVK2 and SVK3, they are connected to an atm network ATM through a broadband transmission link BS respectively.Each narrow band switching node is connected through other narrow band switching node of the pseudo channel VC and each of atm network ATM.
Also can provide the narrow-band communication equipments of other the above-mentioned type to replace narrow band switching node SVK2 and SVK3 by more number.Here the selection of making only is used to simplify following explanation.
In the 1st narrow band switching node SVK1, a coupling network KN is shown, a switch control device VS and an integrated crosspoint IWU who constitutes the atm network atm interface as functional part.Functional part first quarter point internal bus BUS is connected to each other.Crosspoint IWU self is made up of a port assignment module PZM and an ATM modular converter AU who communicates with through two logic port LP, and the latter is connected on the atm network ATM through broadband transmission link BS.Logic port LP distributes to respectively on other narrow band switching node SBK2 and SBK3 that is connected to atm network ATM regularly.(so under the narrow-band communication equipments situation that greater number connects, the necessary corresponding raising of the number of logic port).Port assignment module PZM writes to each other by trunk group and the coupling network KN of the useful channel SN in arrowband through bus B US, other is connected to the narrow band switching node SVK2 of atm network ATM, SVK3 to provide the useful channel SN in this arrowband to be used for useful information is transferred to (or from).Relevant through bus B US handle in addition with port, promptly be equipped with the signaling information of the information word of the relevant logic port LP of identification to be transferred to port assignment module PZM from switch control device VS.At this moment signaling information includes the part PSIG of the connection special use relevant with port and the relevant adjustment message PEM with port.The connection private part of signaling information PSIG should be transferred to relevant target-narrow band switching node SVK2 or SVK3 is used for control connection.
On the many narrow band switching nodes that are fit to prior art, provide the signaling information relevant, so that the narrowband network assembly of control peripheral hardware with logic port.By with the narrowband network component class of peripheral hardware seemingly, can control the mode of crosspoint (IWU), narrow band switching node of the present invention can the existing structure through change known narrow band switching node quite less be realized.
Information is transferred to port assignment module PZM through the adjustment message PEM relevant with port, and the information of the useful channel in arrowband of trunk group SN is distributed to single logic port LP respectively, and therefore distributes to each transmission objectives SVK2, SVK3.Trunk group according to this information useful channel SN in arrowband in port assignment module PZM is divided into the single sub-trunk group of distributing to logic port LP separately, and the logic port LP of this sub-trunk group through distributing to them separately is input to ATM modular converter AU.At this moment sub-trunk group also can only be made up of unique useful channel SN in an arrowband or be fully vacant.Useful channel SN distributes to relevant logic port LP in latter event neither one arrowband.The useful channel in arrowband can communication requirement or the adjustable communication condition coupling of applications exchange control device VS to carrying out to the distribution of transmission objectives.
Therefore the connection private part of signaling information PSIG offers port assignment module PZM with relevant with port (and with transmission objectives special use) form, and therefore can be transformed into the single special-purpose arrowband signaling channel that connects by plain mode.This sub-trunk group logic port LP through distributing separately with the useful channel in arrowband is input to ATM modular converter AU.
ATM modular converter AU admits the sub-trunk group of the narrow band channel that replenishes the arrowband signaling channel for each logic port LP, and it is transformed at least one pseudo channel VC of atm network ATM, and this pseudo channel is for good and all for example managed target-narrow band switching node SVK2 or the SVK3 that distributes to separately by broadband network.ATM modular converter AU invariably is also referred to as segmentation and ressembles module, has the task handle in addition and answers the data flow transmitted segmentation through atm network, and insert ATM cell.Then the useful information of each sub-trunk group and signaling information are transferred to separately target-narrow band switching node SVK2 or SVK3 through atm network ATM, and are transformed into a trunk group of narrow band channel from itself crosspoint again through at least one pseudo channel VC.This trunk group is transported to the coupling network of conversion control device or target narrow band switching node again, so that be for further processing there.
Claims (11)
1. one kind is used for foundation and removes the narrow band switching node (SVK1) that the arrowband is connected and is used for being connected to through a crosspoint (IWU) broadband network (ATM), wherein said crosspoint has a distributing equipment, the trunk group that it is used for the useful channel in arrowband (SN) that will come from described narrow band switching node is divided in order to transmit useful information to target-narrow-band communication equipments (SVK2 different, that be connected to broadband network, SVK3) the sub-trunk group that is provided with
It is characterized in that,
Described crosspoint (IWU) is integrated in the described narrow band switching node (SKV1), so that the signaling information (PSIG) that the agreement of using according to intranodal in described narrow band switching node (SVK1) exists exclusively is transferred in the sub-trunk group of the arrowband signaling channel that adds respectively by described crosspoint (IWU) by sub-trunk group, go so that be transferred in the broadband network, this signaling information is distributed to respectively in the sub-trunk group of useful information waiting for transmission.
From a narrow band switching node (SVK1) that is connected to broadband network (ATM) through crosspoint (IWU) to the different target-narrow-band communication equipments that is connected to broadband network (SVK2, transmission useful information SVK3) and the method for signaling information,
It is characterized in that described method has following steps:
A) for transmit useful information from narrow band switching node (SVK1) to different target-narrow-band communication equipments (SVK2, the trunk group of the useful channel in the arrowband that SVK3) provides (SN), signaling information (PEM according to the agreement existence of using according to intranodal, PSIG) be divided into sub-trunk group, this sub-trunk group is distributed to target-narrow-band communication equipments (SVK2 respectively, SVK3)
B) the transmission objectives private part of this signaling information (PSIG) be included into target-narrow-band communication equipments of giving separately (SVK2, sub-trunk group SVK3),
C) the parton trunk group of distributing to sub-trunk group of signaling information (PSIG) exclusively is transformed into the arrowband signaling channel of importing sub-trunk group respectively, and
D) useful information of sub-trunk group and signaling information, through the pseudo channel (VC) of broadband network (ATM), sub-trunk group exclusively be transferred to target-narrow-band communication equipments of distributing to sub-trunk group (SVK2, SVK3).
3. method according to claim 2 is characterized in that,
Port logic or physics (LP) is distributed to the interior target-narrow-band communication equipments of crosspoint (IWU), and (SVK2, SVK3), and useful information is transferred to crosspoint (IWU) with signaling information and port relevantly.
4. according to claim 2 or 3 described methods, it is characterized in that,
Port logic or physics (LP) is distributed to and is sent out target-narrow-band communication equipments (SVK2, address, broadband SVK3) in crosspoint (IWU).
5. method according to claim 2 is characterized in that,
As the narrowband network assembly of peripheral hardware, crosspoint (IWU) is controlled by narrow band switching node (SVK1).
6. method according to claim 2 is characterized in that,
(SVK2 SVK3), is ready to have at least one permanent pseudo channel (VC) in broadband network (ATM) internal fixation bandwidth for the useful information of sub-trunk group special use and/or signaling information are transferred to target-narrow-band communication equipments.
7. method according to claim 2 is characterized in that,
For sub-trunk group special use, useful information and/or signaling information be transferred to target-narrow-band communication equipments (SVK2, SVK3), be ready at least one pseudo channel (VC) in broadband network (ATM), its bandwidth is relevant with the data appearance that should transmit, dynamically changes according to the requirement to crosspoint (IWU).
8. method according to claim 2 is characterized in that,
(SVK2 SVK3), requires at least one pseudo channel (VC) in broadband network (ATM) to transmission unit (IWU) for the target-narrow-band communication equipments that useful information is transferred to of sub-trunk group special use when only having useful information in sub-trunk group.
9. method according to claim 8 is characterized in that,
The pseudo channel (VC) of the broadband network (ATM) that requires for the transmission useful information through when connecting information word be transferred to target-narrow-band communication equipments (SVK2, SVK3) crosspoint, this information word make to this crosspoint might realize the useful information list meaning ground of input be included into provide for this connection, in advance by signaling information between two connection partners through the harmonious intrinsic sub-trunk group of the exchange of another pseudo channel (VC).
10. method according to claim 8 is characterized in that,
Each identifying information fixed allocation is to all narrow-band communication equipments (SVK1 that networks each other, SVK2, SVK3) sub-trunk group, this identifying information pseudo channel (VC) through broadband network (ATM) when connecting is transferred to the crosspoint of each target-narrow-band communication equipments and makes this crosspoint might realize the broadband connection list that arrives is distributed to sub-trunk group with anticipating.
11. method according to claim 2 is characterized in that,
When only in sub-trunk group, having signaling information crosspoint (IWU) just for sub-trunk group special use, (SVK2 SVK3), requires at least one pseudo channel (VC) in broadband network (ATM) signaling information transmission objectives-narrow-band communication equipments.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997157610 DE19757610A1 (en) | 1997-12-23 | 1997-12-23 | Method for a narrowband switching node for transmitting useful and signaling information via a broadband network and narrowband switching node for implementing the method |
| DE19757610.9 | 1997-12-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1283377A CN1283377A (en) | 2001-02-07 |
| CN1132494C true CN1132494C (en) | 2003-12-24 |
Family
ID=7853227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98812590 Expired - Fee Related CN1132494C (en) | 1997-12-23 | 1998-12-02 | Method for narrowband switching node to transmit useful and signaling information via broadband network |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1042939A1 (en) |
| CN (1) | CN1132494C (en) |
| DE (1) | DE19757610A1 (en) |
| WO (1) | WO1999034637A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6914911B2 (en) * | 1999-07-14 | 2005-07-05 | Telefonaktiebolaget Lm Ericsson | Combining narrowband applications with broadband transport |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4225389C1 (en) * | 1992-07-31 | 1993-09-30 | Siemens Ag | Method for displaying subscriber-specific data when transmitting signaling signals and message signals between narrowband networks and ATM networks |
| DE19534754C1 (en) * | 1995-09-19 | 1996-11-07 | Siemens Ag | Narrowband cable bundle exchange method |
| GB2309362B (en) * | 1996-01-20 | 2000-07-05 | Northern Telecom Ltd | Telecommunications system |
| US5751706A (en) * | 1996-06-05 | 1998-05-12 | Cignal Global Communications, Inc. | System and method for establishing a call telecommunications path |
-
1997
- 1997-12-23 DE DE1997157610 patent/DE19757610A1/en not_active Withdrawn
-
1998
- 1998-12-02 EP EP98963388A patent/EP1042939A1/en not_active Withdrawn
- 1998-12-02 CN CN 98812590 patent/CN1132494C/en not_active Expired - Fee Related
- 1998-12-02 WO PCT/DE1998/003546 patent/WO1999034637A1/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1042939A1 (en) | 2000-10-11 |
| CN1283377A (en) | 2001-02-07 |
| DE19757610A1 (en) | 1999-07-08 |
| WO1999034637A1 (en) | 1999-07-08 |
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