CN1219328A - System and method for providing service to subscriber stations connected to an access network - Google Patents

Abstract

An access node, an access network and a telecommunication system is disclosed that allows an access network (AN) to be fully treated as black box. The subscriber stations (SS-1, SS-2, SS-4) as well as the service network (SN) are terminated on the termination boundary (TB) of the access network (AN), whilst the internal access nodes (AN1, AN2, AN3) contain special routing, broadcasting and switching capabilities, that allow all services arriving from the service network (SN) at the termination point (TP3) via a single connection line to be delivered to the individual subscriber stations (SS-1, SS-2, SS-4), without an identification being necessary as to which access node is connected to the very subscriber station that has requested services from the service network. The invention is particularly advantageous with V5-interfaces.

Description

Be used for providing the system and method for service to the subscriber board that is connected to an Access Network

Invention field

The present invention relates to an access node that in Access Network, uses, an Access Network and a telecommunication system that comprises a plurality of subscriber boards, a service network and an Access Network that is used between at least one subscriber board and at least one service network, providing data communication.Further, the present invention relates to a kind of method, this method is used for service being provided for the one or more subscriber boards that are connected to Access Network from a service network.

Background of invention

Access Network is being undertaken important effect for providing in the effective data communication between a plurality of subscriber boards now.An Access Network like this is configured to as shown in figure 11 usually.A plurality of subscriber board SS-1, SS-2, SS-3, SS-4 passes through data communication or service path TRP1 separately, TRP2, TRP3, TRP4 are connected to access node AN1, AN2, AN3, AN4 respectively.Shown in dashed lines among Figure 11, also may be with two subscriber board SS-1, SS-5 is connected to one and identical access node AN1.Access node AN1 ~ AN4 interconnects by service path, and under the simplest situation, only the access node with a vicinity interconnects, and as indicated with service path TRP12, has so just constituted the Access Network AN of subscriber board.Shown in dotted line, certainly each access node can with several other access node interconnection.For example, in common phone, service path TRP1, TRP2, TRP3, each of TRP4 will be used the digital data channel of a 64kbit/s, and this is that digit translation by separately artificial voice signal produces.For at subscriber board SS-1 for example, and corresponding access node for example sets up a connection between the AN1, and relevant access node AN1 must be able to translate the employed signaling protocol by each subscriber board SS-1.Set up in case connect, just can carry out data communication.In Figure 11, schematically show such signaling protocol or signaling format with SS-F.In addition, although Figure 11 shows all subscriber board SS-1, SS-2, SS-3, SS-4 uses identical signaling format SS-F, and this is to depend on each access node AN1, AN2 in principle, AN3, the ability of AN4 can have different signaling formats but each subscriber board depends on its ability.In Access Network AN inside, data communication between two relevant access nodes can be used and the employed identical signaling format of subscriber board, yet, usually, data communication between the access node also can be different, i.e. the signaling format of data communication can freely be selected as required.

As shown in Figure 11, the structure of a such Access Network is very general, and can be applied to dedicated network or common network, as at DE 42 30 561 A1 for example.An Access Network like this has superiority especially, because subscriber board oneself only need know that they can link to each other with an access node, and they needn't be concerned about in the data communication of the inner relevant a plurality of subscriber boards of Access Network how to keep practically.Therefore, Access Network can be regarded an abstract entity as, as among Figure 11 with shown in the abstract border AB like that.

ETSI (EISI) has edited now the Common Criteria that should how to handle about such Access Network, for example about use, transmission system and the fault management of agreement.This has description in for example list of references [1] DTR/TM-2222 " management of Access Network ", the document is published at Copenhagen in 12-16 day in September, 1994 by ETSI TM2 Access Network SEG.

Although Access Network only is used to make subscriber board swap data and/or conversation mutually in the past, and more advanced telecommunication technology allows to provide Additional Services to subscriber board.According to the definition in the aforementioned ETSI list of references [1], such service provision function comprises that setting up one serves to the necessary whole programs of subscriber board.Such Additional Services can be teletexts for example, video communication etc., and these services can provide by for example additional isdn link.

Since an Access Network, according to Figure 11, it is how to be offered Access Network and therefore to be offered subscriber board by a service network SN that Figure 12 a shows these services.This service network SN can be the local switch of an independent local switch or many interconnection.Hereinafter, will use term " service network ", yet be construed as the possibility that comprises that all are such.Among DE 42 30 561 A1 that mention in front a similar structure has been shown, one of them dedicated network can provide data communication and also provide some service (for example hello protocol system) to give the inner user who connects of a common network between the user.

Yet as shown in Figure 12 a, service network is not to use the signaling format SS-F of subscriber board, but can use its oneself signaling protocol or signaling format SN-F on the service path TRP-SN of its interconnection.Therefore, initial service network SN does not know which access node AN1 it can be connected to, AN2, actually or i.e. access node AN1 access node AN2, this node will have a termination point (representing with stain) of supporting its signaling format in Figure 12 a.In addition, as shown in Figure 12 a, employed service path TRP-SN will be one and have the more link of wide bandwidth that this bandwidth is wideer than the bandwidth that subscriber board is used to the service of transmitting.Therefore,, must at first discern and check access node AN1, see whether it is suitable for setting up the used signaling format of service network SN when subscriber board SS-1 in Figure 12 b when service request.If be fit to, by set up signaling format on service path TRP-SN, link will terminate in access node AN1.This that utilizes service path TRP-SN is fixedly connected, service can be offered subscriber board SS-1, and wherein term " service provides " comprises certainly to the data of subscriber board SS-1 and transmitting, and also comprises from the reception of subscriber board SS-1 response data.In this respect, should be understood that also " subscriber board " is that it not only comprises phone, and comprises other equipment as a general terms here, as computer, display screen, leave word call etc.

Investigate Figure 12 b, wherein user SS-1 has asked service from service network SN, and situation promptly can stop or set up this link by access node AN1 corresponding to the physical extent of a separated links between service network SN and the subscriber board SS-1 shown in the there.Investigate the fixedly foundation of link among Figure 12 b, as subscriber board SS-2 during also from service network SN request service, this has caused a major defect certainly.Suppose that in Figure 12 c AN2 can not support this signaling format and have only access node AN1 to can be used in the connection of service network SN, provide service to set up by access node AN1 for so subscriber board SS-2.This is shown in broken lines in Figure 12 c.

Yet, as long as subscriber board SS-1 also requested service occupied service path TRP-SN → TRP1, this service path just can not be other user's use.So, for other user SS-2 sets up link by AN1.Because can not be set up to the direct connection of AN2, this notion is called as " virtual connections notion ".The notion of a virtual connections like this in DE 42 30 561A1 in order to provide Additional Services also to use for many subscriber boards.

As schematically illustrated in Figure 12 d, if another one user SS-4 is arranged also simultaneously from service network SN request service, situation can be worse certainly.In this case, must set up two virtual connections VC1, VC2.The notion of the virtual connections of even now is also extensively known (for example seeing WO94/09576) in the atm exchange system field for everybody.The major defect that they cause is, the abstract level of the Access Network that not only makes in Figure 11 to be set up is destroyed, and the more important thing is that Internet resources do not have optimal to use.

As previously explained, service network SN itself may be made of many different entities, as the local switch of a local switch or several interconnection, as long as it can provide required service to subscriber board.Now, considering for example will very complicated new service network and Access Network interface by a service network interface (as V5).

ETSI (ETSI) has also edited Common Criteria and the suggestion that should how to dispose such V5 interface in an Access Network framework.Usually and particularly for two versions (being V5.1 interface and V5.2 interface) of V5 interface, ETSI has carried out standardization for the configuration about the V5 interface of Access Network to signaling protocol and exchanger.Can be with reference to following file to obtain the more information of relevant V5 interface: list of references [2] ETSI:prETS300376-1 final draft: 1994; Signaling protocol and exchange (SPS); Be used for the Q3 interface on V5 interface and dependent user configuring ports thereof the management Access Network (AN); List of references [3] EISI:DE/SPS-3003.1; Signaling protocol and exchange; V interface on the numeral local switch (LE); Be used to support the V5.1 interface of Access Network (AN); List of references [4] EISI:DE/SPS-3003.2; Signaling protocol and exchange; V interface on the numeral local switch (LE); Be used to support the V5.2 interface of Access Network (AN); And list of references [5] DIAX telecommunications: 9402803D011; Operating guidance; DIAmuX.

Be similar to Figure 12, Figure 13 has described when at local switch LE, the program when setting up a V5 interface between SN and the Access Network AN.Although Figure 13 a shows the abstract processing of Access Network again, Figure 13 b and Figure 13 c have shown problem, promptly need to determine the terminating V5 interface where in the AN side, i.e. identification can be translated the access node of V5 agreement.As shown in Figure 13 b, user SS-1, SS-2, SS-3, SS-4 are connected to inner their access nodes separately of Access Network AN, although access node AN1, AN2 is connected to local switch LE indirectly by access node AN3, (wherein access node AN3 is as the entrance to Access Network).(such configuration can be found in for example list of references [5]).

The problem that causes is again how to support V5 user's service on NML, promptly how to set up the V5 interface protocol and (see Figure 13 a) on Access Network.

Up to now, do not distinguish the specific characteristic of V5.1 interface and V5.2 interface, usually and as shown in Figure 11, how and set up the V5 interface wherein so that provide service always not tangible to subscriber board the topology of Access Network can be quite complicated and.Even consult nearest documents and materials, for example in list of references [2], the standard of problem also is quite fuzzy for the definition of target classification " Access Network " among relevant Figure 13 a, and therefore at present, how setting up the V5 interface on Access Network does not have available clear and definite criterion in essence.

As at Figure 13 c, shown among the 13d, depend on that request supports the user's of V5 service position, the access node AN1 of Access Network AN inside is identified as the access node that the user will connect.If the V5 interface can be set up on this access node, this node AN1 is directly used in service to the user is provided.Under the situation of supporting the V5 service, this connection will be the link of an independent 2Mbit/s.

Yet, if the V5 interface also not setting up, must be set up the connection of the empty 2Mbit/s from local switch to access node AN1 and be configured for this special V5 interface signaling agreement on access node AN2.For example, in Figure 13 e, user SS-2 has also asked to support the service of V5, still, does not set up the V5 interface in advance on its access node AN2 separately.So, access node AN1, two of AN2 have been designed to the connection of terminating from the 2Mbit/s of local switch, but in this case at access node AN1, connection from the 2Mbit/s of local switch does not terminate in AN1 itself, but (connection of 2Mbit/s is used for AN1, between the AN2 (also can referring to list of references [2]) so that the connection of 2Mbit/s terminates in access node AN2 by interconnection.

Therefore, access node AN1 is used as the final objective access node as transmitting access node and AN2, the connection that might between local switch LE and access node AN2, set up the 2Mbit/s of a void, the V5 interface can terminate in access node AN2 like this, therefore allows to give subscriber board SS-2 that the service of being supported by the V5 interface (for example basic rate ISDN-BA) is provided.Certainly, if there is more user, as shown in Figure 12 d, for the connection of V5 interface, situation also can worsen, because all will set up independent virtual connections for each target access node.Like this, usually and particularly for the V5 interface, may be summarized to be following shortcoming:

1. the abstract level of Access Network AN must be broken, because when setting up service network interface (for example V5 interface), can not avoid observing Access Network inside;

2. the utilization of access network resource is not optimum, because service network interface (for example V5 interface) will terminate in the access node of the subscriber board of all connection request services, therefore needs virtual connections.

For example, in Figure 13 e, when two subscriber board SS-1 and SS-2 have asked to support the service of V5, basic rate ISDN for example, so always between local switch and access node AN1, set up two independently the connection of 2Mbit/s so that support two different V5 interfaces, one of them terminates in access node AN1, and another terminates in access node AN2.Yet because the capacity and the utilization of resources are only set up the connection of a 2Mbit/s so that service all is provided for simultaneously two user SS-1 and SS-2 between an access node of local switch LE and Access Network AN inside, this certainly will be better.

Brief summary of the invention

Therefore, the purpose of this invention is to provide an access node, an Access Network, a telecommunication system and a kind of being used for provides service method to the subscriber board of Access Network, it allows capacity and the resource of optimal with Access Network, and the abstract level of not damaging Access Network.

According to the present invention, this goal of the invention is to solve by an access node (claim 1) that uses in Access Network, this Access Network is connected with at least one service network with at least one subscriber board with a service network service path by a customer service path respectively, this service network provides service for described subscriber board, and this access node comprises:

A) front end translater, employed signaling format when being used for translation and being used for data communication by described at least one service network and/or described at least one subscriber board, and

B) transmission/receiving system, be used to transmit/receive described service to/from described front end translater and be used for by separately the described service of service path transmissions/receptions extremely/and/or extremely from least one other the access node of described Access Network/from subscriber board that at least one connected.

According to the present invention, above-mentioned purpose also solves by an Access Network (claim 14), this Access Network is used for providing data communication between at least one subscriber board and at least one service network, this service network is used for providing service to described subscriber board, described at least one subscriber board and described at least one service network are suitable for using specific signaling format to carry out data communication respectively, and this Access Network comprises:

A) subscriber board service path or service network service path that terminating border with termination point, these termination points are adapted to pass through separately connect described at least one subscriber board and described at least one service network;

B) service path of described termination point by separately is connected to an internal interface ingress in the inside, described terminating border respectively;

C) service path of described access node by separately interconnects each other; And

D) wherein each access node constitutes as previously discussed.

According to the present invention, this purpose also solves (claim 31) by a telecommunication system, this telecommunication system comprises many subscriber boards and a service network, and the subscriber board service path by separately and service Network path are connected to a termination point separately of Access Network as previously mentioned respectively for they.

According to the present invention, this purpose further solves by a kind of method (claim 36), this method is used for service being provided for one or more subscriber boards from a service network, and these subscriber boards are connected to a foregoing Access Network, and this method may further comprise the steps:

A) connect the termination point of described service network to described Access Network, this Access Network is supported the signaling format of described service network by a service network service path;

B) set up described service network at the front end translater of described access node with its signaling format, wherein this access node becomes and is used for the inlet access node that described service network enters described Access Network;

C) by described Connection Service service path, for one or more subscriber boards of asking described service send one or more services from described service network to described inlet access node; And

D) receive described service at described inlet access node;

E) other access nodes of wherein said inlet access node and each described interconnection are served described reception pathfinding respectively and are exchanged to the access node of other interconnection and the described subscriber board of extremely having asked this service.

Because in above method, for telecommunication system and Access Network, access node provide front end translater and transmission/receiving system, so service network interface can terminate in the border of complicated Access Network interface.This makes easily sets up free and unified service network interface on Access Network, no matter how complicated their inner topology is.Therefore, Access Network can be used as a real black box entity and handles, and when setting up service network, does not need to observe the inside of access network architecture.Only need know termination point real on the terminating border, this termination point will be supported service network interface and have only an independent link need be connected to this termination point, and the whole users that are connected to Access Network still can if desired, also can ask service simultaneously from service network request service.Because do not use empty notion, can regard the real black box that will interconnect to other Access Networks as with identical function with the Access Network of such access node configuration.Another advantage is, identical structure can be used for service network itself, inserts like this and service network topology can be connected to each other by these black box that only interconnect on their terminating border.

(claim 2) according to an aspect of the present invention, about access node, preferably described front end translater is suitable for translating the described signaling format of described service network and the described signaling format of described subscriber board.

(claim 3) according to a further aspect in the invention, about access node, if use the V5 network interface, preferably described front end translater is suitable for one of terminating and has the customer service path of 2Mbit/s or 64kbit/s bandwidth and/or the service network signaling paths of a 2Mbit/s.

(claim 4) according to a further aspect in the invention, about access node, preferably described transmission/receiving system be suitable for as many difference independently circuit or channel receive service from described service network service path simultaneously, each of these circuit or channel has specific bandwidth.

(claim 5) according to a further aspect in the invention, about access node, preferably described transmission/receiving system receives described service on described circuit, and dynamically distribute this service on circuit separately, these circuit are on the described service path that is connected to described other access nodes and/or subscriber board.

(claim 6) according to a further aspect in the invention, about access node, preferably described circuit transmits/receives to/and from described subscriber board, each takies 64kbit/s.

(claim 7) according to a further aspect in the invention, about access node, the preferably described service that provides for described subscriber board by described service network, each subscriber board takies the circuit of one or more described 64kbit/s.

(claim 8) according to a further aspect in the invention, about access node, if described service is basic rate ISDN, preferably the communication data of this service transmits on the channel of the 64kbit/s of B channel, and the signaling data of this service transmits on the D of 16kbit/s channel.

(claim 9) according to a further aspect in the invention, about access node, preferably described front end translater receives a plurality of Bearer Channels that are used for communication data and a plurality of communication channels that are used for signaling data.

(claim 10) according to a further aspect in the invention, about access node, preferably described transmission/receiving system is adapted to pass through each subclass of described service path exchange and pathfinding Bearer Channel and other access nodes or the subscriber board that whole described communication channel extremely interconnects.

(claim 11) according to a further aspect in the invention, about access node, preferably described transmission/receiving system is checked the described signaling data on the described communication channel and is broadcasted described communication channel to the access node of other interconnection.

(claim 12) according to a further aspect in the invention, about access node, preferably described transmission/receiving system is checked described signaling data on the described communication channel and the described communication channel of the pathfinding access node to other interconnection.

(claim 13) according to a further aspect in the invention, about access node, preferably described transmission/receiving system comprises the pathfinding switch, the signaling data on the described communication channel that the inspection of pathfinding switch receives, selects idle channel on the service path of other access nodes that lead to interconnection or subscriber board, and then dynamically connects described channel.

According to further aspect of the present invention (claim 15), about Access Network, preferably each front end translater translation of described access node is by whole signaling formats of described subscriber board and the use of described service network, and wherein each subscriber board and service network can be connected to any in the described termination point.

According to further aspect of the present invention (claim 16), about Access Network, each has a termination point port connection table preferably described termination point, and which kind of signaling format described each termination point of this table indication handles.

According to further aspect of the present invention (claim 17), about Access Network, the described termination point that preferably described service network is attached thereto is supported the bandwidth of 2Mbit/s, and each termination point of being attached thereto of described subscriber board is supported the bandwidth of 64Mbit/s or 2Mbit/s.

According to further aspect of the present invention (claim 18), about Access Network, preferably described service network be suitable on described service network service path as a plurality of respectively independently circuit described service is provided, each has specific bandwidth these circuit.

According to further aspect of the present invention (claim 19), about Access Network, preferably the described transmission/receiving system of described access node receives described service on described circuit, and on each circuit in the interior business path between described access node and other access nodes or be connected on each circuit of subscriber board service path of a subscriber board and dynamically distribute this service.

According to further aspect of the present invention (claim 20), about Access Network, preferably described circuit transmits/receives to/and from described subscriber board, each subscriber board has the bandwidth of 64kbit/s.

According to further aspect of the present invention (claim 21), about Access Network, preferably the described service that is provided for described subscriber board by described service network its each takies the channel of one or more described 64kbit/s.

According to further aspect of the present invention (claim 22), about Access Network, if described service is basic rate ISDN, preferably described service network is at the signaling data of the communication data that this service is provided on the channel of the 64kbit/s of B channel and this service of transmission on the D of 16kBit/s channel.

According to further aspect of the present invention (claim 23), about Access Network, preferably described service network is a local switch that is connected to described Access Network by a V5 interface or VB5 broadband interface.

According to further aspect of the present invention (claim 24), about Access Network, preferably described V5 interface is a V5.1 interface or V5.2 interface.

According to further aspect of the present invention (claim 25), about Access Network, preferably one of described service is a service of supporting V5 or VB5, for example ISDN (ISDN-BA) or POTS (plain old telephone service), or one rented the link service.

According to further aspect of the present invention (claim 26), about Access Network, preferably described service network is that communication data distributes a plurality of Bearer Channels and distributes a plurality of communication channels for signaling data.

According to further aspect of the present invention (claim 27), about Access Network, preferably described V5 interface uses n * 31 time slot to be used for transmission/reception, wherein for V5.1 interface, n=1.

According to further aspect of the present invention (claim 28), about Access Network, when using a V5 interface, preferably described basic rate ISDN uses 2 Bearer Channels to be used for communication data and 1 to 3 communication channel is used for signaling data.

According to further aspect of the present invention (claim 29), about Access Network, preferably described V5.1 interface uses the static allocation Bearer Channel, and described V5.2 interface uses the dynamic assignment Bearer Channel.

According to further aspect of the present invention (claim 30), about Access Network, preferably described access node is suitable for exchanging and each subclass of pathfinding Bearer Channel and whole described communication channel other access nodes or the subscriber board to interconnection.

According to further aspect of the present invention (claim 32), about telecommunication system, preferably one or more other Access Networks are connected to described Access Network and/or described service network.

According to further aspect of the present invention (claim 33), about telecommunication system, preferably one or more other service networks are connected to described Access Network and/or described service network.

According to further aspect of the present invention (claim 34), about telecommunication system, preferably described one or more service networks and/or described one or more Access Network interconnect on the termination point on their terminating border.

According to further aspect of the present invention (claim 35), about telecommunication system, preferably the Access Network of two or more described interconnection is connected to become the broad sense Access Network with a terminating border, at the termination point of the above access of terminating border and/or service network as the terminating of broad sense termination point.

According to another further aspect (claim 37) of the present invention, about method, preferably described service network provides described service as a plurality of Bearer Channels and communication channel on described service network service path, and described access node is checked signaling data on the communication channel of being received respectively, selects idle channel on the service path that leads to other access nodes and/or subscriber board, and dynamically connect described channel.

According to another further aspect (claim 38) of the present invention, about method, preferably the described transmission of described channel/reception adopts time-multiplexed method to carry out between the described transmission of the channel from described service network to described Access Network and each access node.

Embodiment of the present invention will reference will be made to the accompanying drawings hereinafter.

The accompanying drawing summary

Fig. 1 be one according to sketch of the present invention, show and regard Access Network as a black box that on the TB of terminating border, has termination point TP;

Fig. 2 a is a sketch according to first embodiment of the invention, shows an access node, an Access Network and a telecommunication system;

Fig. 2 b is a sketch according to first embodiment of the invention, shows a front end translater and a transmission/receiving system TR-SR;

Fig. 3 a is a sketch according to second embodiment of the invention, shows an access node, an Access Network and a telecommunication system;

Fig. 3 b is a sketch according to second embodiment of the invention, shows a front end translater FET and a transmission/receiving system TR-SR;

Fig. 3 c is a sketch according to second embodiment of the invention, shows subscriber board SS-1, and how SS-2 and service network SN are connected to a termination point arbitrarily;

Fig. 3 d is a sketch according to second embodiment of the invention, shows a termination point port connection table;

Fig. 4 is a sketch, shows at each access node AN1, and AN2, AN3 uses channel switch and pathfinding to come to subscriber board SS-1, SS-2, SS-4 provides service method;

Fig. 5 is a sketch, shows the 3rd embodiment of an access node when setting up a V5 interface on the TB of terminating border, an Access Network and a telecommunication system;

Fig. 6 a is a sketch, shows as whole subscriber board SS-1, and SS-2, SS-3, SS-4, SS-5 be respectively from local switch LE, when SN has asked basic rate ISDN-BA, is used to set up the broadcasting of the signaling information of V5.1 interface;

Fig. 6 b, 6c combine and have constituted a flow chart, have described when being applied to the setting up of V5.1 interface shown in Fig. 6 a, according to being used for providing the Bearer Channel of an embodiment of service method and the exchange and the pathfinding of communication channel to subscriber board;

Fig. 7 is a sketch, show when whole subscriber board SS from the V5.1 interface requests pathfinding of the signaling information during basic rate ISDN-BA;

Fig. 8 is a sketch, shows the exchange at access node Bearer Channel BC that is used for the V5.2 interface and communication channel CC;

Fig. 9 is a sketch according to four embodiment of the invention, uses black box network A N-1, and AN-2, SN-1 show the network topology of an expansion, and each black box network configuration is for as shown in Figure 1;

Figure 10 is a sketch according to four embodiment of the invention, show network reorganization with form one have new terminating border TB ' broad sense " black box " network;

Figure 11 is a sketch, shows common Access Network;

Figure 12 a is a sketch, and the problem that exists when connecting SN to Access Network of a service network according to Figure 11 has been described;

Figure 12 b is a sketch, shows the fixing connection of setting up of service network to access node AN1;

Figure 12 c is a sketch, shows as two subscriber board SS-1, and SS-2 is the notion of virtual connections when service network SN has asked service;

Figure 12 d is a sketch, show when three subscriber boards simultaneously from the service network request problem of virtual connections in when service;

Figure 13 a is a sketch, shows the problem when setting up a V5 interface usually on an Access Network;

Figure 13 b is a sketch, shows the interconnection of local switch to Access Network;

Figure 13 c is a sketch, shows the terminating of V5 interface at access node AN1;

Figure 13 d, 13e are sketches, show respectively as one or two user SS-1, the interconnection and the interconnection of the V5 interface during service that SS-2 has asked to support V5 simultaneously.

Embodiment is described

Hereinafter, use identical with symbolic representation identical in Figure 11 to 13 described above and similar part.

Universal of the present invention has been described in Fig. 1.By for example comparing with Figure 12 b, as seen in Figure 1, no matter how complicated Access Network is, service network SN terminates on the border TB of Access Network now.The terminating border comprises many termination point TP1, TP2, and TP3, terminating has service path TRP1 separately, TRP2, TRP3 on these termination points.If use such notion, Access Network can be regarded a real black box as so.Certainly, termination point on the TB of terminating border must have " observability ", promptly under the simplest situation (wherein all users have identical signaling format SS-F, and service network SN uses different signaling format SN-F) termination point must have a mark or sign can be respectively with on the termination point that terminates in identification like this with indication service network and subscriber board.Yet the advantage of this method is not need the further knowledge of the internal structure of Access Network ability significantly.

First embodiment

Fig. 2 a, 2b usually show built-in function, and these functions will allow this Access Network to be counted as a real black box.Shown in Fig. 2 a, an access node AN3 has been identified as the signaling format SN-F that supports service network SN.Subscriber board SS-1, SS-2, SS-4 are with they service path TRP1 separately, and TRP2, TRP4 terminate in termination point TP1 respectively, and TP2 is on the TP4.Termination point respectively with access node AN1, AN2, AN3 connect, and wherein might connect termination point to an access node more than, shown in dashed lines.For simply, the inside of access network node connects and shows the service path TRP31 that does by separately, TRP21 only with contiguous access node interconnection.Yet certainly, if Access Network provides more access node, interconnection can be arbitrarily, as shown in Figure 11.Yet, be whole subscriber board SS-1 although should note the fact, SS-2, SS-4 can only have an independent separated links to set up between switching network SN and access node AN3 by termination point TP3 simultaneously from service network SN request service.

Fig. 2 b shows the internal structure according to the access node of first embodiment of the present invention.Access node AN3 comprises a front end translater, and it can translate the interface signaling agreement SN-F from switching network SN (perhaps if desired, also can from a subscriber board in the interconnection of termination point TP4).Front end translater FET translation signaling format SN-F also provides and other internal interface ingress AN1, and AN2 sets up the interior signaling form IN-F that signal post needs.This interior signaling form IN-F can adjust as required.This access node AN3 also comprises a transmission/receiving system TR-SR, and this device receives and the service that sends access node AN1 from other interconnection (or other access node that links to each other or termination points, shown in dashed lines).Disposed access node, as at Fig. 2 a, shown in the 2b, they are suitable for translating required signaling protocol SS-F respectively like this, SN-F and comprise separately transmission/receiving system, be the subscriber board SS-1 that all interconnects, SS-2, the service of SS-4 can provide on independent service path TRP3 simultaneously, and access node AN3, AN1, AN2 carry out the pathfinding and the exchange of service respectively.Just, access node AN3 (having set up the service network signaling format on its front end translater FET) receives all services from service network SN, be the required service of subscriber board SS-4 taking-up, and exchange remaining service to contiguous access node AN1 (finishing by transmission/receiving system TR-SR all) by service path TRP31.

Successively, access node AN1 receives remaining service and required the serving to subscriber board SS-1 of pathfinding subscriber board SS-1, and remaining the serving to access node AN2 of access node AN1 exchange, access node AN2 pathfinding successively is used for the service of subscriber board SS-2 to described subscriber board SS-2.As long as termination point has a mark or indication, which type of signaling format indication translates at the access node that each links to each other, and then depends on such inner exchanging and pathfinding function, and Access Network can be regarded a black box as and keep its abstract level.

Second embodiment

Fig. 3 a, 3b show one basically and are similar to a at Fig. 2, the structure shown in the 2b, yet, access node AN1, AN2, each has the whole signaling format SS-F of translation, the ability of SN-F AN3.As shown in Fig. 3 b, dispose front end translater now according to second embodiment, so that translate two kinds of signaling format SN-F, SS-F also is converted into inner signaling format IN-F.The exchange of transmission/receiving system and the ability of pathfinding are equal to it at Fig. 2 a, the ability among the 2b.In an Access Network with the access node shown in Fig. 3 a, termination point does not need to have about translating into the special indication of which type of signaling format.

This means,, exist the complete black box of an Access Network to handle as shown in Fig. 3 c, its meaning is subscriber board SS-1, SS-2 and service network SN can be connected to any termination point TP1 on the TB of terminating border arbitrarily, TP2, TP3 (with dashed lines is schematically illustrated in Fig. 3 c).Certainly, each subscriber board SS-1 usually, SS-2 can also use different signaling format SS-F or even can be suitable for using a kind of among the multiple signaling format SS-F.Similarly, service network can be configured to use one or more signaling formats.Corresponding, the front end translater is suitably for and comprises service network and the employed signaling format of subscriber board respectively.

As shown in Fig. 3 d, termination point, promptly the physical port of (abstract) terminating border TB can have a termination point port connection table TPCL, and this port connection table indication can be used in any agreement of this termination point.Yet, under any circumstance, utilize each access node AN1, AN2, the exchange of AN3 and pathfinding function do not need to have any knowledge about the Access Network internal structure.

Fig. 4 shows a kind of method of exchange and the single service of pathfinding, in each access node some function by the execution of transmission/receiving system.In Fig. 4, suppose that (as in Fig. 3 a) access node only supports respectively by the subscriber board SS-1 that links to each other, the needed signaling format separately of SS-2 and service network SN.

As in Fig. 3 a, illustrating, between service network SN and access node AN3, there are a connection, this connection will support the specific bandwidth of x Mbit/s.This bandwidth can support that many circuit (will regard service network as and ask an independent interconnection between the user of service by the circuit in this connects, for example in Fig. 4, pass through the whole route of AN3 → AN1 → AN2 to SS-2) from SN, for example, comprise specific bandwidth n1, n4, n2, the channel of nc is as shown in Figure 4.Nature, termination point TP3 can support this bandwidth.Each that offers respectively in the service of subscriber board will be at one or more channel SS-1CH, SS-4CH, the last transmission of SS-2CH.Certainly also need one or more channel C-CH to be used for communication data, i.e. the exchange of signaling information.

In Fig. 4, as an example, subscriber board SS-1 need to have asked the service of three channels, and subscriber board SS-2 has asked to need the service of two channels and subscriber board SS-4 only need to have asked the service of a channel.In this case, termination point TP4, TP1, TP2 will be adapted to support required at least as shown in Figure 4 bandwidth respectively.Owing in Fig. 4, used two communication channel C-CH, by two communication channels of access node AN1 will exchange with pathfinding to access node AN2.Therefore, the service path TRP31 that illustrates, TRP12 has the minimum bandwidth shown in Fig. 4 respectively.Certainly, they can provide bigger bandwidth.

Although delay the Bearer Channel SS-1CH of bandwidth usually, SS-4CH, SS-2CH and C CH can use with time-multiplexed method, and these channels have equal bandwidth usually.As long as access node AN3 carries out the essential exchange and the pathfinding of those correct channels that originate from service network, specific set time relation needn't be provided between input channel, and these input channels are to the incoming traffic path of access node AN3 and each interior business path TRP31 or to the service path of termination point TP4.This means that access node AN3 dynamically selects and distributes the channel that inputs to its outgoing traffic path from it.Similarly, access node AN1, AN2 will carry out the dynamic assignment of channel, up to all service channel respectively pathfinding to from the service network request subscriber board of service.

Therefore the advantage of using a transmission/receiving system to be used for the exchange of individual channel and pathfinding will guarantee that the abstract level of Access Network is not destroyed; That is, do not need to discern specific access node (this access node is connected with the real subscriber board of needs service), set up virtual connections yet without any necessity.Therefore, an independent connection link between service network and each access node (can translation service network interface protocols) is just enough, and however, service is provided for whole subscriber boards, supposes that the total bandwidth of required channel is no more than the bandwidth of service path between switching network and each access node.

The 3rd embodiment

Although solution set forth above is very general and does not relate to the use of any special interface or protocol format, the problem that to describe below when setting up V5 interface (seeing Figure 12 discussed above, 13) is how to solve by the notion shown in use Fig. 1 to 4.

In Fig. 5, the V5 interface still terminates on the border of Access Network AN, and access node AN1 to AN4 has as referring to figs. 1 to 4 described specific functions.The V5 interface terminates in the termination point TP6 that uses the 2Mbit/s bandwidth.Certainly, the termination point of whole 2Mbit/s access nodes of service-oriented network interface is still visible on the TB of the terminating border of Access Network AN.Observability still means (as what discussed with reference to figure 1,2), and it is known which access node or which front end translater can be translated the V5 interface protocol.Observe Fig. 5, this means, all the 2Mbit/s termination point interface (entering the inlet access node of Access Network) of SN and access node AN1 is known in the Access Network outside.Similarly, these notes and commentary are suitable for all other termination point TP1, TP2, TP3, TP4, TP5 (these termination points can be regarded IAD as in the exit point that service is provided to subscriber board) and also be suitable for such termination point with other Access Network (see figure 9) interfaces.For with Fig. 5 in whole descriptions of being done of the termination point TP1-TP6 of user SS-1 to SS-5 and local switch LE interface therefore only be suitable for such termination point in the mode of similar scope, these termination points in Fig. 9 with another Access Network AN-2 or service network SN-1 interface.

As discussing in Fig. 4, unique user platform SS-1, SS-2, SS-3, SS-4, the service path between the SS-5 support each service (minimum bandwidth that n * 64kbit/s) is required.When the leased line that uses from other companies, these service paths also can be supported 2Mbit/s certainly, because leased line only be the time paying of data occupancy.For illustration purpose, as an example, access node AN1 to AN4 only interconnects to the access node of a vicinity, though general interconnection configuration can be taken from Figure 11.

Use service network and terminating border TB to go up the termination point TP interface of 2Mbit/s, service network now can be with common mode interface.In Fig. 5, this means that the V5 interface in fact terminates in access node AN1 again, yet this is transparent in the access node outside.

Hereinafter, will describe the exchange and the pathfinding of channel, yet when setting up the V5 interface, it is similar that exchange and pathfinding can both make Access Network regard as aspect the black box at two for V5.1 and V5.2 interface.

The V5.1 solution

In Fig. 6 a, the terminating of V5.1 interface then is connected to inlet access node AN1 again then on separately termination point TP6 on the border.As an example, suppose that all subscriber boards have all asked basic rate ISDN service in its residence.In this case, each the such service that offers each subscriber board will need two for example Bearer Channel BC of 64kbit/s (for example on the B channel) (transmission payload datas, as the channel SS-1CH among Fig. 4, SS-4CH, SS-2CH is such) and two communication channel CC (transmission signaling informations, as the channel C-CH among Fig. 4), for example each takies 16kbit/s (for example D channel).Communication channel and Bearer Channel are used CC respectively in Fig. 6 a, BC represents.

If 5 subscriber boards have been asked basic rate ISDN simultaneously, will need 10 Bearer Channels and 2 communication channels so, wherein communication channel is used for the exchange of signaling information, and the data that Bearer Channel is used to transmission to serve.Altogether, required in this case bandwidth will be 10 * 64kbit/s+2 * 64kbit/s=768kbit/s, on the termination point of the 2Mbit/s of V5.1 interface terminating, can easily support this speed (in a V5.1 interface, the bandwidth of communication channel is 64kbit/s).

In fact, the V5 interface uses the Bearer Channel of n * 31 64kbit/s, for example reaches the bandwidth (for V5.1 interface n=1) of 1984kbit/s altogether, can support this bandwidth fully on described termination point.Although the quantity of Bearer Channel (for example, being 10 for 5 subscriber boards) is the configuration of fixing and depend on selected V5.1 interface, can use the communication channel of 1,2 or 3 64kbit/s for signaling.In Fig. 6 a, two communication channel CC have been used.

With reference to figure 6b, 6c, these two figure show a flow chart of the exchange and the broadcasting of channel among relevant Fig. 6 a together, will be described in service method to be provided in the V5.1 interface configuration each subscriber board.At first, service network (being a local switch here) behind step S1 start-up routine, is connected to termination point TP6 at step S2 by network interface.At Connection Step S2, the front end translater FET of access node AN1 will set up signaling format or the agreement that the V5.1 interface uses.At step S3, all the service of V5 is supported in the subscriber board request.Therefore, at step S4, distribute Bearer Channel CC and (under illustrative situation) two communication channel CC of 10 64kbit/s and in step S5, send access node AN1 subsequently to.

At step S6, determine whether subscriber board SS-1 has asked service, if asked service, access node AN1 will use the support of this information, promptly exchange and pathfinding ISDN serve the SS-1 to the user; Just, access node AN1 takes out two Bearer Channel BC at step S7, and promptly its distributes the channel that the arrives channel to the service path between AN1 and the subscriber board SS-1.Now, at step S8, subscriber board SS-1 can use the ISDN service, wherein will have the transmission/reception of data on two Bearer Channels.

When in step S9, detect subscriber board SS-5 at node AN1 and also asked an ISDN service, so at step S10, S11, S12 takes out two Bearer Channels for subscriber board SS-5 again and two communication channels also are used for signaling.In step 11, AN4 transmits two Bearer Channel BC to subscriber board SS-5 after also receiving two communication channels.Remaining channel (6 Bearer Channels and 2 communication channels in the case) then sends access node AN2 at step S13.

Whether access node AN2 then checks that subscriber board SS-2 has carried out the ISDN request and if at step S15, S16 takes out two Bearer Channel BC again and transmits/receive at step S14.Remaining channel (being 4 Bearer Channels and two communication channels now) is transferred into access node AN3 at step S17, and at step S18, whether S21 checks subscriber board SS-3, and SS-4 has asked the ISDN service.If, in program before step S24 reaches home, at step S19, S20 (for subscriber board SS-3) and at step S22, S23 (for subscriber board SS-4) takes out channel again and transmits/receive.

Like this,, there are the selection and the transmission of Bearer Channel on the V5.1 interface, provide institute's requested service up to the subscriber board of having asked service to last in the Access Network internal structure although all services are provided.By doing like this, guarantee that Bearer Channel arrives their suitable destinations.

Signaling information on the communication channel is that access node is needed, thereby in order to support user's service.In Fig. 6 a, access node AN1 learns two communication channels on the V5.1 interface significantly.These two communication channels comprise on the V5.1 interface all, and users serve needed complete signaling information.Therefore access node AN1 has two kinds of selections: or check signaling information and with its " pathfinding " to relevant access node AN2, the AN4 (see figure 7), or with its " broadcasting " to access node AN2, AN4 is as doing in Fig. 6 a.With such way, access node AN2 then is broadcast to access node AN3 with signaling information.Like this, the whole access nodes in the Access Network will receive identical signaling information, though the part of this information and all perhaps be not suitable for them.Yet this will guarantee that whole access nodes receive their needed signaling informations by employed two the communication channel CC of signaling information.

As shown in Fig. 6 a, the broadcasting of signaling information is feasible for most actual application really, yet it may have disappointed influence: signaling information takies between the single access node time slot channel too many on the signaling paths.As in Fig. 6 a, seeing, always two communication channel CC are broadcast to contiguous access node, although perhaps this access node does not need this complete signaling information.This has increased bandwidth demand.

Fig. 7 has used such principle, makes access node check signaling information on the received communication channel CC, and then only with its pathfinding to relevant access node.Just, access node AN1 will check, which signaling information is that access node AN4 is needed and only carry out the pathfinding of this channel, and remaining communication channel is by the access node AN2 of pathfinding to other.Therefore, in this case, Fig. 6 b, the step S6 among the 6c, S7; S9, S10; S14, S15; S18, S19; S21, S22 suitably changes, so that comprise the inspection of communication channel and only the such signaling information of pathfinding is to each access node, this signaling information is that the there is needed.

The V5.2 solution

On Access Network, set up a V5.2 interface and do not have the different of essence with the situation of setting up the V5.1 interface.Yet, the V5.2 interface is not a fixed allocation of using time slot on bandwidth, and be to use dynamic time slot allocation (document that sees reference [2]-[5]), and therefore, in this case, more senior transmission/the receiving ability of expectation access node support arrives their suitable destinations in the Access Network to guarantee all carryings and signaling data, promptly arrives each access node.Dynamic time gap allocation means that access node can not depend on individual channel and always have identical time slot position in bandwidth in this connects.

As the situation in V5.1, the V5.2 interface will terminate in termination point TP6, promptly in access node AN1 (see figure 8).Now, because the V5.2 interface uses dynamic time slot allocation, access node AN1 will have to check that communication channel CC goes up its received signaling information, so that suitably pathfinding carrying and signaling data are to other access node AN2, AN4.

In this case and schematically illustrated in Fig. 8, access node AN1 (and access node AN2, AN3 also is like this) will have to check that the signaling information that is used for communication channel CC is so that determine: which with pathfinding to access node AN4 and AN2 (under the situation of access node AN1).Therefore, a switch is housed in the access node, this switch is checked signaling information received on communication channel, is that data transmit the channel of selecting the free time and then dynamically are connected these channels compiling with the shunting side.Like this, carrying and signaling data are with pathfinding their suitable destinations to the Access Network, and this is very similar to Fig. 6, the situation of the V5.1 described in 7.Although check by this way signaling information certainly than only pathfinding and broadcast signaling information (as at Fig. 6, in 7) more complicated, the advantage of so dynamic time slot channel allocation is: at single access node AN1-AN2, there is not described fixed relationship in AN2-AN3 yet on each signaling paths between the AN1-AN4.

Although at Fig. 6,7, in 8, the pathfinding and the exchange of channel have been described as an exemplary example with reference to the V5 interface, it should be noted that this notion is generally suitable for any service network interface, as long as this service network interface provides its service on a time slot channel basis, for example can obtain by the method for TDM method or other channel multiplexings.

The 4th embodiment

For each V5.1 interface and V5.2 interface, more than introduced the solution that is used for Access Network is regarded as a complete black box, as described in reference to Figure 1.As long as the internal interface ingress with situation that the translation of signaling format combines under have specific exchange, pathfinding and broadcast-capable, this just can allow freely to set up the V5 interface on the Access Network topology of complexity.

Like this, the abstract level of Access Network is not broken, because interface just can be set up in the inside that does not need to observe Access Network.This feasible higher abstract level that easily is used for network management.The utilization of access network resource is optimum, and promptly carrying and signaling information are incited somebody to action only busy channel on the minimal set of 2Mbit/s transmission resource.

For the processing that Access Network carried out that comprises the above access node, will allow telecommunication system to set up neatly, as shown in FIG. 9.As long as the abstract level of each network is not broken, Access Network or service network can interconnect free and neatly, and the internal structure that does not need to observe Access Network itself.All required is that borderline termination point will be supported the employed signaling format of other networks of each interconnection.

This principle can also further expand, as shown in figure 10.Here, a plurality of general Access Network AN-1 ', AN-2 ', AN-3 ' (its each have the internal structure of aforesaid access node) is interconnected once more, obtains new broad sense " black box " network with new terminating border TB '.Therefore, Access Network AN-1 ', AN-2 ', AN-3 ' will show as: the inner access node of they as if independent Access Network (for example use AN-1 ' represented that).A kind of like this foundation flexibly is possible, because each elementary cell of access node is supported function described above, promptly Access Network can be regarded a real black box as and not break abstract level like this.

The only illustrative purpose of reference number in the claim, and do not limit the scope of these claims.

Claims (38)

1. access node (AN3 who in Access Network (AN), uses; AN1, AN2, Fig. 1,2a), (TRP1 TRP2) comes and at least one subscriber board (SS-1 with a service network service path (TRP3) this Access Network by a customer service path respectively, SS-2, SS-4) be connected with at least one service network (SN), this service network provides service for described subscriber board, and this access node comprises:

A) front end translater (FET; Employed signaling format (SN-F when Fig. 2 b), being used for translation and being used for data communication by described at least one service network and/or described at least one subscriber board; SS-F), and

B) transmission/receiving system (TR-SR; Fig. 2 b), be used for the described service of transmission/reception to/from described front end translater (FET) and be used for service path (TRP31 by separately; TRP2) the described service of transmission/reception to/from least one other the access node (AN1) of described Access Network and/or to/from the subscriber board (SS-4) of at least one connection.

2. according to the access node (AN3 of claim 1; AN1 AN2), is characterized in that, described front end translater (FET; Fig. 3 a 3b) is suitable for translating the described signaling format (SN-F) and the described subscriber board (SS1-F of described service network (SN); SS2-F) described signaling format (SS-F).

3. according to the access node (AN3 of claim 1; AN1 AN2), is characterized in that, if use V5 network interface, described front end translater (FET; Fig. 1,2a) be suitable for the customer service path that one of terminating has 2Mbit/s or 64kbit/s bandwidth (TRP1, TRP2) and/or the service network service path (TRP3) of a 2Mbit/s.

4. (AN3, AN1 AN2), is characterized in that, described transmission/receiving system (TR-SR according to the access node of claim 1; Fig. 4) be suitable for as a plurality of difference independently circuit (SS-1CH, SS-2CH SS-4CH) receive service from described service network service path (TRP3) simultaneously, each has specific bandwidth (n1 kbit/s these circuit, n2 kbit/s, n4 kbit/s, nc kbit/s).

According to the access node of claim 4 (AN3, AN1, AN2), it is characterized in that, (SS-1CH, SS-2CH SS-4CH) go up the described service that receives to described transmission/receiving system (TR-SR) at described circuit, and at circuit (SS-1CH separately, SS-2CH dynamically distributes this service on SS-4CH), and these circuit are being connected to described other access nodes (AN1, AN2) and/or described service path (TRP31, the TRP12 of subscriber board (SS-4); TRP4) on.

According to the access node of claim 4 and 5 (AN3, AN1 AN2), is characterized in that, described circuit (SS-1CH, SS-2CH SS-4CH) transmit/receive to/from described subscriber board (SS), each of these subscriber boards takies 64kbit/s.

7. according to the access node (AN3 of claim 6; AN1 AN2), is characterized in that, the described service that described service network (SN) provides for described subscriber board (SS), and each of these subscriber boards takies the circuit of one or more described 64kbit/s.

8. according to the access node (AN3 of claim 1; AN1 AN2), is characterized in that, if described service is basic rate ISDN, the communication data of this service (BC) transmits on the channel of the 64kbit/s of B channel, and the signaling data of this service (CC) transmits on the D of 16kbit/s channel.

9. according to the access node (AN3 of claim 1; AN1 AN2), is characterized in that, described front end translater (FET) receives a plurality of communication channels (CC) that are used for a plurality of Bearer Channels (BC) of communication data and are used for signaling data.

10. according to the access node (AN3 of claim 9; AN1, AN2), it is characterized in that, described transmission/receiving system (TR-SR, Fig. 4,6a, 7) be adapted to pass through described service path (TRP31, TRP21) (n2 is n1) with other access nodes or the subscriber board of whole (nc) described communication channels (CC) to interconnection for each subclass of exchange and pathfinding Bearer Channel (BC).

11. access node (AN3 according to claim 9; AN1 AN2), is characterized in that, described transmission/receiving system (TR-SR) check on the described communication channel (CC) described signaling data and to the broadcasting of the access node of other interconnection (Fig. 6 is described communication channel (CC) a).

12. access node (AN3 according to claim 9; AN1 AN2), is characterized in that, described transmission/receiving system (TR-SR) is checked described signaling data on the described communication channel (CC) and the described communication channel of pathfinding (Fig. 7) (CC) access node to other interconnection.

13. access node (AN3 according to claim 9; AN1, AN2), it is characterized in that, described transmission/receiving system (TR-SR) comprises the pathfinding switch, signaling data on the described communication channel (CC) that the inspection of pathfinding switch receives, (TRP31 TRP4) goes up and selects idle channel, and then dynamically connects described channel at the service path of other access nodes that lead to interconnection or subscriber board.

14. be used at least one subscriber board (SS-1, SS-2, SS-4) and an Access Network (AN of data communication is provided between at least one service network (SN); Fig. 2 a), this service network is used for providing service to described subscriber board, described at least one subscriber board and described at least one service network be suitable for using specific signaling format (SS-F SN-F) carries out data communication respectively, and this Access Network comprises:

A) one has termination point (TP1, TP2, TP3, TP4) terminating border (TB), these termination points are adapted to pass through subscriber board service path (TRP1, TRP2 separately, TRP4) or service network service path (TRP3) connect (TRP1, TRP2, TRP3, TRP4) described at least one subscriber board and described at least one service network;

B) described termination point (TP1, TP2, TP3, TP4) service path by separately (TRP1, TRP2, TRP3, TRP4) be connected to respectively an internal interface ingress in the inside, described terminating border (AN1, AN2, AN3); And

C) described access node (AN1, AN2, AN3) (TRP31, TRP21) interconnection each other of the service path by separately; And

D) wherein each access node (AN1, AN2 is AN3) according to or the multinomial formation of claim 1-13.

15. the Access Network (AN) according to claim 14 is characterized in that, each front end translater (FET of described access node; Fig. 3 a, 3b) whole signaling formats of using by described subscriber board and described service network of translation (SS-F, SN-F), each subscriber board (SS-1 wherein; SS-2) can be connected (Fig. 3 c) to described termination point (TP1, TP2, TP3, TP4) in any with service network (SN).

16. the Access Network (AN) according to claim 14 is characterized in that, and described termination point (TP1, TP2, TP3, TP4) each has a termination point port connection table (TPCL; Fig. 3 d), which kind of signaling format this table described each termination point of indication (TP) handles.

17. Access Network (AN) according to claim 14, it is characterized in that, described termination point (the TP3 that described service network (SN) is attached thereto, Fig. 3 a) supports the bandwidth of 2Mbit/s, and each termination point (TP1 that described subscriber board (SS) is attached thereto, TP2, TP4) bandwidth of support 64Mbit/s or 2Mbit/s.

18. Access Network (AN) according to claim 14, it is characterized in that, described service network (SN) is suitable for going up as a plurality of difference circuit (SS-1CH independently at described service network service path (TRP3), SS2-CH, SS-4CH) provide described service, each has specific bandwidth (n1 kbit/s, n2 kbit/s these circuit, n4 kbit/s, nc kbit/s).

19. Access Network (AN) according to claim 18, it is characterized in that, described transmission/the receiving system (TR-SR) of described access node is at described circuit (SS-1CH, SS2-CH, SS-4CH) go up the described service that receives, and at described access node (AN3) and other access nodes (AN1, AN2) the interior business path (TRP31 between, TRP12) each circuit (SS-1CH, SS2-CH SS-4CH) goes up or dynamically distribute this service on each circuit of the subscriber board service path (TRP4) that is connected to a subscriber board (SS-4).

20. the Access Network (AN) according to claim 18 is characterized in that, and described circuit (SS-1CH, SS2-CH SS-4CH) transmit/receive to/and from described subscriber board (SS), each subscriber board has the bandwidth of 64kbit/s.

21. the Access Network (AN) according to claim 20 is characterized in that, the described service that is provided for described subscriber board (SS) by described service network (SN) its each takies the channel of one or more described 64kbit/s.

22. Access Network (AN) according to claim 14, it is characterized in that, if described service is basic rate ISDN, described service network (SN) is at the signaling data (CC) of the communication data (BC) that this service is provided on the channel of the 64kbit/s of B channel and this service of transmission on the D of 16kBit/s channel.

23. the Access Network (AN) according to claim 14 is characterized in that, described service network (SN) is a local switch (LE) that is connected to described Access Network (AN) by a V5 interface or VB5 broadband interface.

24. the Access Network (AN) according to claim 23 is characterized in that, described V5 interface is a V5.1 interface or V5.2 interface.

25. the Access Network (AN) according to claim 23 is characterized in that, one of described service is a service of supporting V5 or VB5, for example ISDN (ISDN-BA) or POTS (plain old telephone service), or one rented the link service.

26. the Access Network (AN) according to claim 14 is characterized in that, described service network (SN) is a plurality of Bearer Channels (BC) and distribute a plurality of communication channels (CC) for signaling data for communication data distributes.

27. the Access Network (AN) according to claim 25 and 26 is characterized in that, described V5 interface uses n * 31 time slot to be used for transmission/reception.

28. a Access Network (AN) according to claim 25 and 26, it is characterized in that, when using a V5 interface, preferably described basic rate ISDN (ISDN-BA) uses 2 Bearer Channels to be used for communication data and 1 to 3 communication channel (CC) is used for signaling data.

29. the Access Network (AN) according to claim 19 and 24 is characterized in that, described V5.1 interface uses the static allocation Bearer Channel, and described V5.2 interface uses the dynamic assignment Bearer Channel.

30. Access Network (AN) according to claim 26, it is characterized in that, described access node (AN1-AN4) is suitable for exchange and each subclass of pathfinding Bearer Channel (BC), and (n2, n1) and all (nc) described communication channels (CC) are to other access nodes or the subscriber board that interconnect.

31. one comprises a plurality of subscriber board (SS-1, SS-2) and the telecommunication system (Fig. 1) of a service network (SN), they pass through subscriber board service path (TRP1 separately respectively, TRP2) and service Network path (TRP3) be connected to termination point separately (TP1, a TP2 according to one of claim 14-30 or multinomial Access Network (AN); TP3).

32. the telecommunication system (Fig. 9) according to claim 31 is characterized in that, one or more other Access Networks (AN-2) are connected to described Access Network (AN-1) and/or described service network (SN-1).

33. the telecommunication system (Fig. 9) according to claim 31 is characterized in that, one or more other service networks (SN-1) are connected to described Access Network (AN-1) and/or described service network (SN).

34. the telecommunication system (Fig. 9) according to claim 33 is characterized in that, (AN-1 AN-2) interconnects on their termination point on terminating border for described one or more service networks (SN-1) and/or described one or more Access Network.

35. telecommunication system (Figure 10) according to claim 34, it is characterized in that, the Access Network of two or more described interconnection (AN-1 ', AN-2 ', AN-3 ') be connected to become and have a terminating border broad sense Access Network of (TB '), the termination point of (TB ') the above access and/or service network is as broad sense termination point (TP ') terminating on the terminating border.

36. be used for giving one or more subscriber board (SS-1 from a service network (SN), SS-2) provide service (ISDN-BA) a kind of method (Fig. 4, Fig. 6 b, c), these subscriber boards are connected to an Access Network according to claim 14-30 (AN), may further comprise the steps:

A) connect the termination point (TP3) of described service network (SN) to described Access Network (AN), this Access Network is supported the signaling format (SN-F) of described service network by a service network service path (TRP3);

B) set up described service network (SN) at the front end translater (FET) of described access node (AN3) with its signaling format (SN-F), wherein this access node (AN) becomes and is used for the inlet access node (EAN) that described service network (SN) enters described Access Network (AN);

C) by described Connection Service service path (TRP3), for one or more subscriber boards of asking described service send one or more services (ISDN-BA, BC from described service network (SN) to described inlet access node (EAN), CC, SS-1CH, SS2-CH, SS-4CH)); And

D) described inlet access node (EAN) receive (TR-SR) described service (ISDN-BA, BC, CC, SS-1CH, SS2-CH, SS-4CH);

E) other access nodes (AN1-AN4) of wherein said inlet access node (EAN) and each described interconnection are served described reception pathfinding respectively and are exchanged to the access node (AN1-AN4) of other interconnection and the described subscriber board of extremely having asked this service.

37. a kind of method (Fig. 6 according to claim 36,7,8), it is characterized in that, described service network (SN) is at described service network service path (TRP3, V5.1 V5.2) goes up and to provide described service as a plurality of Bearer Channels (BC) and communication channel (CC), and described access node is checked signaling data on the communication channel of being received (CC) respectively, selects idle channel on the service path that leads to other access nodes and/or subscriber board, also dynamically connected described channel.

38. method (Fig. 4) according to claim 36, it is characterized in that the described transmission of described channel/reception adopts time-multiplexed method to carry out between the described transmission of the channel from described service network (SN) to described Access Network (AN) and each access node.

Images