CN2930118Y

CN2930118Y - Access network device facing multiple service

Info

Publication number: CN2930118Y
Application number: CN 200620014350
Authority: CN
Inventors: 张鹏
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2006-06-29
Filing date: 2006-06-29
Publication date: 2007-08-01
Anticipated expiration: 2016-06-29

Abstract

The utility model discloses an access network device for multi operations which comprises a modern, an access node, an Ethernet gathering network and at least one operation Router. The modern is connected with the access node which is connected with the Ethernet gathering network. The Ethernet gathering network is communicated with each operation Router. The access network device for multi operations has the characteristics of simple structure, easy management and operation and simultaneously is easy for the IPQoS development and the multi operations.

Description

A kind of towards multiple services access network device

Technical field

The utility model relates to a kind of towards multiple services access network device, specifically, has related to propose the access network device of a kind of polygon edge (service server), multi-service logical channel.

Background technology

Along with the develop rapidly of access network, increasing new business begins to launch under IP network, such as the IPTV video traffic, and VoIP (Voice over IP) telephone service, network game service or the like.Wherein, the IPTV video traffic be carry out on a large scale at present, most important new business.Carrying out of new business had higher requirement to whole access bearer network, comprises management easily, transmission reliably and high quality-of-service or the like.

Traditional broadband access network is just at data service, and user's access way uses BRAS (broadband remote Access server, BAS Broadband Access Server) that PPPoE is terminated based on PPPoE (PPP over Ethernet).Use a logical channel transmitting data service between user and the access node DSLAM (DigitalSubsriber Line Access Multiplexer, digital subscriber line access multiplex).Because the introducing of novel business such as IPTV, this structure has been difficult to satisfy the requirement of operator.Such as, all business of single obvious intractable of service server Node B RAS; The quantity that accesses terminal at present is many, if use single service node, address administration will go wrong; Handle if be placed on the service node, will certainly bother very much in the management, cause availability to descend; Inserting side, the residence network access node that accesses terminal often adopts the mode of single physical circuit, single logical channel, a plurality of business are transmitted in same logical channel, QoS (quality of service, service quality) be difficult for ensureing, exist between the business to influence each other, fail safe is not high yet; There is Single Point of Faliure in single service node, in case go wrong, the face of influence is very big.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of towards multiple services access network device, realize traditional single service server node, access terminal and access node between single logical channel pattern can not adapt to service operation under the multiservice environment.

For solving the problems of the technologies described above, it is a kind of towards multiple services access network device that the utility model provides, and it comprises: modulator-demodulator, access node, the ethernet aggregation network network of virtual support local area network (LAN), at least one business router; Described modulator-demodulator links to each other by a plurality of logical transport passages with described access node, to from subscriber household Network converge, and data message is delivered to described access node, the Ethernet-Aggregation network of described virtual support local area network (LAN) links to each other with described access node, business router, to be delivered to described business router by the logical transport passage by the data message that access node converges the different user that comes, and be transferred to IP network by business router.

Device described in the utility model, wherein, described modulator-demodulator, by with data message through many independently the logical transport passage be delivered to access node; Described access node, by converging data, according to the division of business, and described each business router between have an independently logical transport passage; The logical transport passage of described access node both sides carries out communication by specific mapping and described business router.

Device described in the utility model, wherein, described modulator-demodulator is family expenses formula modulator-demodulator.

Device described in the utility model, wherein, described access node is digital subscriber line access multiplex.

Device described in the utility model, wherein, described logical transport passage has two types, a kind of logical transport passage based on VLAN (virtual local AreaNetwork, VLAN); A kind of logical transport passage that is based on PVC (Permanent virtual circuit, permanent virtual circuit).

The access network device that the utility model proposes is simple in structure, is easy to management and enforcement, also is easy to carry out simultaneously IP QoS, is fit to very much multiple services operation.

Description of drawings

Fig. 1 is the described basic block diagram towards multiple services access network device of the utility model embodiment;

Fig. 2 is the mapped mode 1 that the described DSLAM of the utility model embodiment goes up logical channel;

Fig. 3 is the mapped mode 2 that the described DSLAM of the utility model embodiment goes up logical channel.

Embodiment

The utility model is further introduced below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.

As shown in Figure 1, native system comprises following parts:

Modulator-demodulator Modem101 is also referred to as station equipment (CPE, Customer PremiseEquipment), finishes, utilize modulation-demodulation techniques such as xDSL the converging of subscriber household Network, by telephone line, data message is delivered to access node.Modem in the utility model has a plurality of logical transport passages to access node.Transmission channel has two types, a kind of logical transport passage based on VLAN; A kind of logical transport passage that is based on PVC.Different business datum messages transmit in different transmission channels.

Access node 102 is also referred to as DSLAM (Digital Subscriber Loop AccessMultiplexer) herein, physically finish the user telephone line termination, converge data,, user data finally is delivered on the business router 104 by up ether data network from different user.Logical channel between access node 102 and the business router 104 realizes by VLAN.Access node 102 is provided to the mapping function of business router 104 logical channels, makes different business datums be delivered on the different business router 104.This mapping relations might not be one to one, because current modem101 function is also enough not powerful, it is more rough to the classification of business, such as based on port, then port mapping are arrived PVC or VLAN.This business of seeing based on the traffic differentiation pattern and the domestic consumer of port is a basically identical: for the user, different service terminals is by linking Modem101 on the different ports.But there is certain difference in the business of the actual operation of business that the user sees and operator.For example, for IPTV, in order to guarantee the normal operation of IPTV, just comprise: group broadcasting video frequency business, multicast user dispose authentication business or the like.Therefore, the DSLAM102 both sides can be mapping relations one by one to the mapping relations of business, also can be many-to-one mapping relations.This just requires DSLAM102 can possess more fine-grained professional perception and separating capacity.

The data message of the further convergent access node of ethernet aggregation network network 103 ethernet aggregation network networks, data passes is given business router 104 the most at last.Ethernet aggregation network network 103 needs supported vlans, provides business router 104 to the transparent transmission channel between the access node 102.

Business router 104 provides the miscellaneous service service, comprises transistroute agent functionality of safety certification, equipment control, IPTV or some service or the like.

The utility model has provided two kinds of present stages at the IPTV business, the pattern of professional mapping on DSLAM102.

Pattern 1: based on the mapping of PVC, as shown in Figure 2 to VLAN.

There is a physical channel between Modem101 and the DSLAM102.On Modem101, the user vlan information that different ports is corresponding different.At the DSLAM102 place, the information processing among the PVC is divided into:

If the PVC carrying is traditional PPPoE business of networking, map directly to S-VLAN1 (why service VLAN 1 is that ' business ' VLAN is because will distinguish the vlan information that possible user carries) by logical transport passage so based on PVC1.The final first line of a couplet BRAS of S-VLAN1.

If the PVC carrying is the IPTV business, DSLAM102 need distinguish message so:

A) multicast message all is mapped to S-MVLAN by the logical transport passage based on PVC2, just professional M-VLAN.S-MVLAN transmission IGMP (Internet GroupManagement Protocol) protocol massages and group broadcasting video frequency message.

B) other message all is mapped to S-VLAN2 by the logical transport passage based on PVC2.S-VLAN2 comprises authentication and user terminal configuration etc. at other services except that professional multicast.

Pattern 2: based on the mapping of VLAN, as shown in Figure 3 to VLAN.

There is a physical channel between Modem101 and the DSLAM102.On Modem101, different port bindings is to the different PVC of physical transmission channel.At the DSLAM102 place, the information processing among the VLAN is divided into:

If the VLAN carrying is traditional PPPoE business of networking, map directly to S-VLAN1 by logical transport passage so based on VLAN1.The final first line of a couplet BRAS of S-VLAN1.

If the VLAN carrying is the IPTV business, DSLAM102 need distinguish message so:

A) multicast message all is mapped to S-MVLAN by the logical transport passage based on VLAN2, just professional M-VLAN.S-MVLAN transmission IGMP protocol massages and group broadcasting video frequency message.

B) other message all is mapped to S-VLAN2 by the logical transport passage based on VLAN2.S-VLAN2 comprises authentication and user terminal configuration etc. at other services except that professional multicast.

Claims

1, a kind ofly it is characterized in that, comprising: modulator-demodulator, access node, the ethernet aggregation network network of virtual support local area network (LAN), at least one business router towards multiple services access network device; Described modulator-demodulator links to each other by a plurality of logical transport passages with described access node, to from subscriber household Network converge, and data message is delivered to described access node, the Ethernet-Aggregation network of described virtual support local area network (LAN) links to each other with described access node, business router, to be delivered to described business router by the logical transport passage by the data message that access node converges the different user that comes, and be transferred to IP network by business router.

2, device as claimed in claim 1 is characterized in that, described modulator-demodulator, by with data message through many independently the logical transport passage be delivered to access node;

Described access node, by converging data, according to the division of business, and described each business router between have an independently logical transport passage;

The logical transport passage of described access node both sides carries out communication by specific mapping and described business router.

3, device as claimed in claim 1 is characterized in that, described modulator-demodulator is family expenses formula modulator-demodulator.

4, device as claimed in claim 1 is characterized in that, described access node is digital subscriber line access multiplex.

5, device as claimed in claim 1 or 2 is characterized in that, described logical transport passage is the logical transport passage based on VLAN.

6, device as claimed in claim 1 or 2 is characterized in that, described logical transport passage is the logical transport passage based on permanent virtual circuit.