CN202004779U

CN202004779U - Office building network architecture on basis of EPON (Ethernet Passive Optical Network) technical construction

Info

Publication number: CN202004779U
Application number: CN2010206300469U
Authority: CN
Inventors: 蒋小兵; 张健; 张筱筠; 方精干; 郑征; 李程跃
Original assignee: Hennan Electric Power Survey and Design Institute
Current assignee: Hennan Electric Power Survey and Design Institute
Priority date: 2010-11-29
Filing date: 2010-11-29
Publication date: 2011-10-05
Anticipated expiration: 2020-11-29

Abstract

The utility model relates to an office building network architecture on the basis of an EPON (Ethernet Passive Optical Network) technical construction, which comprises an optical line terminal positioned in an office building machine room. The optical line terminal is respectively connected into a floor passive optical splitter on each floor by an optical fiber. On each floor, the optical line terminal is connected into an optical network unit of each office on the floor by an optical fiber after being subjected to light splitting by the floor optical splitter. Due to the adoption of the technical scheme, fusion of a plurality of networks is achieved by the measures, complex wiring caused by wiring of a plurality of networks is saved, the investment is saved, and unified construction, unified management and sharing of information and resources of all service systems. The office building network architecture has strong economy and practicality.

Description

The office block network architecture based on the EPON technique construction

Technical field

The utility model relates to office building local area network (LAN) field, utilizes the EPON correlation technique to make up an office LAN that can realize multiple function.

Background technology

Office block has the demand of various network services, specifically comprises computer network, cable television network, administration telephone net, building control and security protection net.Computer network mainly transmits all kinds of office data business, comprises information interaction between the interior employee and the needs of visiting Internet; Cable television network is for news and the leader's speech of televiewing timely; Telephone network be mainly satisfy between the daily office block user and with the office telephone talk business in the external world; Building control and security protection net are for the Based Intelligent Control of finishing office block and safety guard function.

What existing office block networking plan adopted usually is the method for each MANET, i.e. a network that spreads all over full building is set up in computer, cable TV, phone, building control and security protection separately.There is following drawback in this network-building method:

1, a plurality of networks have increased a large amount of networks and terminal equipment, have caused the huge waste of investment;

2, because the situation that there is stack in each network cable tray or crosses has increased the difficulty that connects up, bring inconvenience to construction;

3, a plurality of systems independently become net separately, each other can't intercommunication, be not easy to the unified management in whole building.

Summary of the invention

The utility model main purpose is: provide a kind of EPON of utilization technology to realize the office block network architecture of a plurality of network integrations.

For achieving the above object, the utility model is by the following technical solutions:

The utility model comprises the optical line terminal that is positioned at the office block machine room, described optical line terminal is connected in the floor passive optical splitters of every floor by an optical fiber respectively, in every floor, after the beam split of floor passive optical splitters, be connected in the optical network unit of this each office of floor by an optical fiber again.

Described optical line terminal connects one or more in computer network, telephone network, IPTV network, cable TV network or the building control security protection network.

Adopt the utility model of technique scheme, reached the fusion of a plurality of networks by above measure, save the complexity wiring that a plurality of network layouts bring, saved investment, realize unified construction, unified management and the information of each operation system and sharing of resource simultaneously, had stronger economical and practicality.

Description of drawings

Fig. 1 is the utility model office block EPON network architecture diagram.

Fig. 2 merges the Organization Chart of computer network for the utility model.

Fig. 3 merges the Organization Chart of telephone network for the utility model.

Fig. 4 merges the Organization Chart of IPTV network for the utility model.

Fig. 5 merges the Organization Chart of cable TV network for the utility model.

Fig. 6 merges the Organization Chart of building control and security protection network for the utility model.

Embodiment

As shown in Figure 1, the utility model adopts a kind of simple tree topology, it comprises the optical line terminal OLT that is positioned at the office block machine room, optical line terminal OLT is connected among the floor passive optical splitters ODN of every floor by an optical fiber respectively, in every floor, after floor passive optical splitters ODN beam split, be connected in the optical network unit ONU of this each office of floor by an optical fiber again.Above-mentioned optical line terminal OLT connects one or more in computer network, telephone network, IPTV network, cable TV network or the building control security protection network, merges thereby reach many nets.

As shown in Figure 2, the EPON network is to the fusion of computer network: optical line terminal OLT is a switch or router, is again that a multi-service provides platform, and it provides the optical fiber interface towards passive optical-fiber network, i.e. the PON interface.Optical line terminal OLT also can provide connecting port on the Ethernet of multiple speed, with the server and the Internet network interconnection.Optical network unit ONU is equivalent to 1 switch, and is upwards interconnected by floor passive optical splitters ODN and optical line terminal OLT, and a plurality of 10M/100M Ethernet interfaces are provided downwards.Each Ethernet interface can connect 1 computer.Server, optical line terminal OLT, floor passive optical splitters ODN, optical network unit ONU, computer have just been formed an IP data network jointly like this, by the optical line terminal OLT swap data, can also pass through optical line terminal OLT first line of a couplet interface accessing Internet between the different computers.Can also divide different VPN between the different computers, realize the isolation of information.Owing to only adopt 1 optical fiber to be connected between ODN and the ONU, employing EPON network is compared with traditional switch networking, has reduced the network layout amount.

As shown in Figure 3, the EPON network is to the fusion of telephone network: optical line terminal OLT can insert telephone-switching network by the upper united mouth, difference according to access network, the access way of optical line terminal OLT has two kinds of first line of a couplet modes to have two kinds: for the NGN network, owing to adopted Softswitch technology, can link to each other with the NGN network access equipment with the IP mouth that optical line terminal OLT equipment provides; For traditional PSTN network insertion, can realize interface conversion between PSTN and the IP network by voice gateways.Difference according to the phone type, optical network unit ONU also provides 2 kinds of second line of a couplet interfaces: for the IP phone, the IP mouth that can directly provide by optical network unit ONU inserts, the POTS mouth that common phone can carry by optical network unit ONU inserts, and provides interface conversion between common phone and the IP network by voice gateways.

As Fig. 4, shown in Figure 5, the EPON network is to the fusion of cable TV network: the signal source of cable TV has two kinds, and a kind of is the IPTV signal, and another kind is the CATV signal.The signal of IPTV itself is with the form transmission of IP bag, and cable TV signal is failed in the IP network oral instructions that can directly utilize optical line terminal OLT and optical network unit ONU to provide; The CATV signal source is a radiofrequency signal, and its access way increases wave multiplexer as shown in Figure 4 between optical line terminal OLT and floor passive optical splitters ODN, cable TV signal and IP data-signal is closed into transmit in 1 optical fiber.The effect of wave multiplexer is wavelength optical signals to be combined in the same optical fiber transmit, up-downgoing transmits the ripple of 1310nm and 1490nm respectively between optical line terminal OLT and the optical network unit ONU, can superpose the on this basis wavelength of 1550nm transmits TV signal.Optical network unit ONU equipment provides CATV mouth, can directly be connected by radio frequency line with the radio frequency mouth of cable TV.Increasing the EDFA amplifier before cable TV signal enters wave multiplexer, is in order to increase cable TV signal power, to remedy the light energy attenuation that floor passive optical splitters ODN brings.

As shown in Figure 6, the EPON network is to the fusion of building control and security protection network: traditional building control security protection is taked to arrange in each floor passageway and is adopted twisted-pair feeder that pilot signal directly is sent to Surveillance center in the control point.As shown in Figure 5, the utility model is taked the signal of each control point is inserted the RS485 mouth that optical network unit ONU carries by twisted-pair feeder, become the IP data-signal in the optical network unit ONU internal conversion, reach optical line terminal OLT through floor passive optical splitters ODN network.Be connected with the control centre data platform by port at the optical line terminal OLT end.This mode has been saved the trouble of building control and security protection independent wiring, and the network of also being convenient to monitor message is simultaneously uploaded, and realizes the network monitoring of various authorities.

Below networking example by an office block embodiment of the present utility model is described.Suppose that certain office block is high 8 layers, every layer of 8 room, 4 computers in each room, 4 common phones and 1 cable TV interface.Central machine room is arranged on Stall, and every layer also has 2 control points in addition.It is as follows to design networking plan according to the utility model:

With reference to Fig. 1, optical line terminal OLT equipment is installed in the Stall central machine room.Optical line terminal OLT equipment provides few 8 the PON mouths of as many as and a plurality of Ethernet interface.Optical line terminal OLT is by Ethernet interface and Internet, NGN, data server and control centre's first line of a couplet.The ODN optical splitter of a 1:8 of configuration in each floor road, each PON mouth is received on the ODN optical splitter of each layer by 1 optical fiber.1 optical network unit ONU of each room configuration, optical network unit ONU provides 4 Ethernet interfaces at least, 4 FXS mouths, 1 CATV mouth.Each floor passive optical splitters ODN goes out 8 optical fiber and is connected with 8 optical network unit ONU of this layer, and the optical network unit ONU in each room then connects computer, phone, cable TV various device respectively.In addition, external 1 road CATV cable TV signal outside the building, this signal at first carries out power amplification through the EDFA image intensifer after entering the building, optical splitter through a 1:8 after amplifying carries out beam split, so just obtain 8 tunnel CATV signals that amplify, 8 road signals superpose in the optical fiber that OLT8 PON mouth gone out through 1 wave multiplexer respectively.So just realized the fusion of computer, phone, cable TV, building control and a plurality of operation systems of security protection by setting up 1 EPON network.

Claims

1. office block network architecture based on the EPON technique construction, it is characterized in that: it comprises the optical line terminal that is positioned at the office block machine room, described optical line terminal is connected in the floor passive optical splitters of every floor by an optical fiber respectively, in every floor, after the beam split of floor passive optical splitters, be connected in the optical network unit of this each office of floor by an optical fiber again.

2. the office block network architecture based on the EPON technique construction according to claim 1 is characterized in that: described optical line terminal connects one or more in computer network, telephone network, IPTV network, cable TV network or the building control security protection network.