CN101227357A

CN101227357A - Double-returning type telecommunication synthesis access loading network constructional device

Info

Publication number: CN101227357A
Application number: CNA200710144129XA
Authority: CN
Inventors: 魏践峰; 陈旭辉; 林德风; 王赣清
Original assignee: Fujian Post & Telecom Planning Design Institute Co Ltd
Current assignee: Fujian Post & Telecom Planning Design Institute Co Ltd
Priority date: 2007-12-29
Filing date: 2007-12-29
Publication date: 2008-07-23

Abstract

The invention belongs to the telecommunication access network field, which particularly relates to a double-returning-type telecommunication synthesis access load-bearing network structure, the invention is characterized in that the invention is divided into a core layer, a backbone layer, a convergent layer and an accessing layer, a lower layer is connected with an upper layer in dual homing form, the backbone layer network doubly returned with the corn layer network, the convergent layer network is doubly returned with the backbone layer network, the access network is doubly returned with the convergent layer network, and a business layer network is doubly returned with the access layer, each two layer surfaces are connected through a double node to resistant network paralysis which is caused by single-node failure.

Description

A kind of double-returning type telecommunication synthesis access loading network constructional device

Technical field

The invention belongs to the telecommunication access network field, particularly a kind of double-returning type telecommunication synthesis access loading network network structure.

Background technology

Existing telecommunication access network is divided into convergence-level, Access Layer, and the business of the overwhelming majority all is uploaded to backbone layer after the equipment convergence by the convergence-level node, so the fail safe of convergence-level node is extremely important.But, the most houses owed by a citizen of aggregation node machine room in the existing communication network for renting, particularly the inside and outside environment of machine room is all undesirable, has that power supply capacity is little, the machine room space is narrow and small, the optical cable turnover converges machine room with many hidden danger such as routes, very likely causes aggregation node to lose efficacy.In case and aggregation node lost efficacy, will cause large-area communication service to interrupt, influence surface is huge.

At the hidden danger that aggregation node lost efficacy, conventional solution is that the convergence-level machine room is rectified and improved, and improves power supply capacity, increases the secondary route of optical cable turnover machine room.But be subjected to the restriction of objective condition,, civil power introducing itself less as the machine room space be unstable, be difficult to newly-built pipeline increases optical cable secondary route etc., above-mentioned conventional measures to rectify and reform often can't be implemented, even the aggregation node of having implemented can not avoid causing because of transmission, data equipment faults itself lost efficacy.Therefore, this patent promotes the ability of the anti-single point failure of whole telecommunication synthesis access loading network by making rational planning on the network topology structure, also promptly adopts double-returning type telecommunication synthesis access loading network.

Summary of the invention

The objective of the invention is to:, promote the ability of the anti-single point failure of whole telecommunication synthesis access loading network by making rational planning on the network topology structure.

In order to realize the above purpose, the present invention is divided into core layer, backbone layer, convergence-level, Access Layer, and following one deck is connected with last layer with dual-homed form.The backbone layer network is to core layer network dual homed, the convergence-level network is to backbone layer network dual homed, access layer network is to convergence-level network dual homed, and the operation layer network is connected to resist the network paralysis that single node lost efficacy and causes by binode between per two aspects to the access layer network dual homed.(as Fig. 1)

After adopting double-returning type telecommunication synthesis access loading network, when certain aggregation node lost efficacy, important service can connect on another aggregation node rapidly automatically by protection path default on transmission equipment or the data equipment; For general business, since each layer cable network dual homed to two different nodes of upper level, can business be connected on another aggregation node by artificial jumping fiber and reset the device systems path, thus the influence of avoiding the single point failure of aggregation node that the whole network is caused.

In sum, adopt the double-returning type telecommunication synthesis access loading network framework, its main advantage applies exists:

(1) network configuration is clear, and networking is more flexible, and convergence-level and above network in the future can be along with technological progress can be formed mesh network.

(2) improve convergence-level cable resource utilance.

(3) whole network can constantly be upgraded along with technological progress, and upgrading and dilatation are convenient, flexible.

(4) flexibility of network is extremely strong, can satisfy all professional access demands

(as: IP, arrowband, broadband, PON, 3G, optical fiber are hired out).

(5) can provide reliable protection to important service and Very Important Person;

(6) thoroughly solve the single problem of convergence-level machine room route, the optical cable route is better selected;

(7) make service distributing, thereby improve the whole network reliability;

(8) influence surface is little during machine room (containing power supply) fault, the machine room that generates electricity two sections of can suing and labouring.

(9) the superfluous calamity ability of network increases substantially.

Description of drawings

Fig. 1: the network architecture;

Fig. 2: optical fiber letting networking;

The professional networking of Fig. 3: 3G;

The professional networking one of Fig. 4: PON;

The professional networking two of Fig. 5: PON;

The professional networking three of Fig. 6: PON;

The professional networking four of Fig. 7: PON;

Fig. 8: narrow band service networking;

Fig. 9: broadband services networking one;

Figure 10: broadband services networking two;

Embodiment

Double-returning type telecommunication synthesis access loading network can successfully manage single node and lose efficacy to the influence of the whole network.But the circuit flow of double-returning type telecommunication network is to comparatively complicated, and the port resource that takies equipment is also more.Therefore, to different business, should be according to factors such as its importance, flow, optical cable route conditions, selectable dual homed, its implementation is as follows:

(1) on the optical cable framework, each aspect optical cable all is connected to even higher level of node in the mode of dual homed.

(2) on the device network, (contain convergence-level) and all adopt the dual homed mode to insert the upper level network more than convergence-level, Access Layer only has important big customer, NodeB, big capacity access point just to adopt the dual homed form to be connected to the convergence-level node.

(3) Optical cross connects case and convergence-level node should be by to being provided with and adjacent, and can not there be big barrier the centre, as city square, greenery patches, river, turnpike road etc.

(4) optical fiber letting networking (as Fig. 2); The professional networking (as Fig. 3) of 3G; The professional networking one (OLT is installed in key machine room, light separator is installed in aggregation node and sub-district machine room) (as Fig. 4) of PON; The professional networking two (OLT is installed in key machine room, light separator and mainly is installed in the sub-district machine room) (as Fig. 5) of PON; The professional networking three of PON (OLT is installed in the aggregation node machine room, convergence-level adopts the wavelength-division networking) (as Fig. 6); The professional networking four of PON (OLT is installed in key machine room, convergence-level adopts the wavelength-division networking) (as Fig. 7); Narrow band service networking (as Fig. 8); Broadband services networking one (the transparent transmission convergence: convergence-level adopts WDM, sub-district machine room that DSLAM is installed) (as Fig. 9); Broadband services networking two (handle convergence: the convergence-level machine room is installed by the convergence-level switch and WDM equipment, sub-district machine room are installed access-layer switch) (as Figure 10).Among the figure:

Represent core layer equipment (Egress node machine building)

Represent backbone layer equipment and convergence-level local side apparatus (female office machine building)

Represent convergence-level equipment (module office and machine room condition be the access point machine room preferably)

Represent the Optical cross connects case

▲ represent the NodeB service point

■ represents important broadband services point

● represent important big customer service point

◆ represent important narrow band service point

Represent common broadband services point

Represent common big customer service point

Represent general narrow band service point

Represent light separator

Represent the convergence-level switch

Represent access-layer switch and corridor switch

Claims

1. double-returning type telecommunication synthesis access loading network constructional device, it is characterized in that: be divided into core layer, backbone layer, convergence-level, Access Layer, following one deck is connected with last layer with dual-homed form, the backbone layer network is to core layer network dual homed, the convergence-level network is to backbone layer network dual homed, access layer network is to convergence-level network dual homed, and the operation layer network is connected to resist the network paralysis that single node lost efficacy and causes by binode between per two aspects to the access layer network dual homed.