A kind of FTTH Optical Access Network framework based on " unification of three nets "
Technical field
The invention belongs to many nets integration technology application, relate to multidisciplinary cutting edge technology fields such as the communication technology, optical-fiber network transmission technology, computer networking technology, a kind of FTTH Optical Access Network framework based on " unification of three nets " particularly is provided.The network architectures of the comprehensive application that net merged more than it became huge network stand-alone systems such as telecommunication network system, television network broadcast system, computer data network system, safety monitoring promptly realize " unification of three nets " and Fiber to the home (FTTH).
Background technology
Own relatively independent program controlled switching system is much all arranged in large and medium-sized enterprise, corporations usually,, just must dispose required machine room, transmission, power supply and the maintenance management troop of a cover stored-program control exchange telecommunication network system to satisfy the needs of this enterprise phone.Watch the broadcast TV program needs for satisfying, also need to dispose separately the television network broadcast system, need required machine room, transmission, power supply and the maintenance management troop of a cover radio and television equipment equally.For satisfying the broadband access network business, also to dispose a cover computer data network system, also need required machine room, transmission, power supply and the maintenance management troop of a cover computer network system.Also to dispose required machine room, transmission, power supply and the maintenance management troop of a cover safety defense monitoring system.So disposing greatest problem is that investment is big, the cycle is long, the line service amount is big, the maintenance cost height, and task can not be integrated, and application level is low, and range of application is narrow.We have proposed to be suitable for the network architecture that large and medium-sized enterprise, corporations realize digitized comprehensive application thus, promptly realize " unification of three nets " and Fiber to the home (FTTH).
At present the ADSL technology is the broadband access technology that is based upon on the copper cash basis, along with international copper cable price continue soaring, can be more and more higher based on the line cost of the xDSL of copper cable; As active equipment, electromagnetic interference is difficult to avoid, and maintenance cost also can be more and more higher; Along with the fiberize process continuation of the whole network is extended to user side, the restriction of end-to-end broadband connection will more and more concentrate on and insert section.
Simultaneously up 1Mbit/s of ADSL and descending 8Mbit/s's is connected the long-range demand that speed can't satisfy high-end user.Although ADSL2 and ADSL2+ technology are expected to alleviate this pressure, its speed and transmission range to continue to increase substantially be limited, can not look to having internal to break through.In addition, though VDSL can solve the subproblem of ADSL, provide the bandwidth up to 50MHz, its transmission range is subjected to great restriction.
Real-time radio and television occupy the about 500MHz of bandwidth at present, and it is unpractical going to transmit or adopt the some broadcast mode with Internet.After the existing broadcasting and television network process HFC bidirectional rebuilding, upstream bandwidth is 40MHz, takes into account IP operation on the basis of transmitting radio and television, can satisfy the requirement of partial data business.But under the situation of many user's share of bandwidth, upstream bandwidth and ADSL that each household obtains are similar, are difficult to satisfy the development of a large amount of uplink services from now on.
In conjunction with optical fiber is best up to now transmission medium, optical fiber access technology and other access technologies (as copper twisted pair cable, coaxial cable, category-5 cable, wireless etc.) are compared, sharpest edges are that available bandwidth is big, what it can provide has dedicated bandwidth up to 75000Gb/s, Optical Access Network also has characteristics such as transmission quality is good, transmission range is long, antijamming capability is strong, network reliability is high, saving conduit resource, is the motive force of development place of FTTH.
The IPTV business has caused the extensive concern of industry in recent years.It not only is expected to solve to a great extent the content problem in broadband, more makes potential broadband user group expand to the TV customer group.With IPTV be representative network video service for the demand of bandwidth considerably beyond traditional WEB browse, business such as E-mail, so FTTH becomes the ideal style of extensive carrying IPTV business.HDTV at present its transmission rate needs 19.2Mbps, is compressible to 5Mbps~6Mbps with technology H.264.The maximum transmission rate that it has been generally acknowledged that the ADSL that QoS is guaranteed to some extent is 2Mbps, still is difficult to transmit HDTV, so HDTV also is that many nets merge one of main motive force of FTTH.
This FTTH Optical Access Network framework based on " unification of three nets " can provide the bandwidth of the 40M that registers one's residence, and is easy to be extended to 80M even higher, can satisfy following to integrated service needs such as broadband access, HDTV, IPTV, digital safety monitorings fully.
Summary of the invention
The object of the present invention is to provide a kind of FTTH Optical Access Network framework, with the integrated service application network framework of many net fusions such as all private network user's voice communications such as large and medium-sized enterprise, universities and colleges, digital community, high-definition digital radio and television, wire and wireless wideband data and safety monitoring based on " unification of three nets ".Can provide such as various function serving informations such as internal lan, community website, integrated information service, VOD program requests.Simultaneously can satisfy the needs to high bandwidth such as IPTV, HDTV etc., system deployment and dilatation are very convenient.
Huge network stand-alone systems such as telecommunication network system, television network broadcast system, computer data network system, safety defense monitoring system are become the network architectures of the comprehensive application that many nets merge, promptly realize " unification of three nets " and Fiber to the home (FTTH).
The present invention has adopted PON (Ethernet passive opticalnetworks, the ethernet passive optical network) technology of present domestic complete independent research, and the Ethernet passive optical network that adopts gigabit or 10GE mainly comprises EPON and GPON as the carrying core.It is one adopt point to the multidrop topology structure, utilize optical fiber and optical passive component to carry out physical layer transmission, the broadband access new technology of multiple business be provided by Ethernet protocol.
The present invention includes: telecommunication public network inserts, the Internet inserts, wireless transmission, the radio and television Access Network, enterprise has LAN firewall now, enterprise has the local area network (LAN) core switch now, media gateway, the unification of three nets first core switch Session Border Controller, fire compartment wall, switch, the NGN soft switchcall server, the arrowband charges, network management system, first database server, the IN service gateway, gigabit ethernet passive optical network (GPON), optical line terminal equipment (EPON), Optical Amplifier Unit, ONU, digital monitor system, broadband charging, the safety service gateway, server, optical branching device, spectrophotometric unit, AP, Optical Network Terminal ONT, the Optical Network Terminal of band wireless home gateway, Optical Network Terminal M3-2401, integrated access equipment, the integrated service access platform.
First core switch 9 and second core switch 10 constitute the network system that redundant heat is equipped with, and can guarantee the reliability of whole unification of three nets system.First core switch 9 and second core switch 10 are interconnected by the 10GE interface, and with existing local area network (LAN) first core switch 6 of enterprise, second core switch 7 is interconnected by optical cable, by first fire compartment wall 12, second fire compartment wall 13 inserts the Internet, by the first safety service gateway 36, the second safety service gateway 37 links to each other with server 38, by the 3rd fire compartment wall 14, the 4th fire compartment wall 15 respectively with first switch 16, second switch 17 links to each other, the NGN soft switch is by first switch 16, second switch 17 and unification of three nets first core switch 9, second core switch 10 links to each other, charge system comprises that the arrowband charges and broadband charging, the arrowband charges and directly links to each other with the NGN soft switch, broadband charging directly links to each other with unification of three nets second core switch 10, webmaster machine 22 links to each other with unification of three nets second core switch 10 with the 5th fire compartment wall 19 by the 3rd switch 20, application system server educational training server 24, VOD vod server 25, community website server 26 links to each other with unification of three nets second core switch 10 by the 4th switch (23), media gateway 8 is by first switch 16, second switch 17 and the 3rd fire compartment wall 14, the 4th fire compartment wall 15 and unification of three nets first core switch 9, second core switch 10 links to each other, and access telecommunication public network 1, gigabit ethernet passive optical network local side apparatus 28 is by the 10GE light mouth and first core switch 9, second core switch 10 links to each other, link to each other with first Optical Amplifier Unit 30 by the gigabit interface, and by optical branching device 39 access radio and television public networks 4, gigabit ethernet passive optical network local side apparatus 29 is by 10GE light mouth and core switch 9,10 link to each other, link to each other with second Optical Amplifier Unit 31 by the gigabit interface, and by optical branching device 39 access radio and television public networks 4, so can constantly expand local side apparatus, satisfy the dilatation requirement.
This framework can also be with systems such as safety monitorings by in the optical network terminal access loading network, and digital monitor system 33 passes through ONU32, links to each other with optical line terminal equipment (EPON) 29.First spectrophotometric unit 40 links to each other with Optical Network Terminal ONT44 with first Optical Amplifier Unit 30, Optical Network Terminal ONT44 links to each other with an AP43, second spectrophotometric unit 41 links to each other with the Optical Network Terminal 45 of second Optical Amplifier Unit 31 with the band wireless home gateway, the 3rd spectrophotometric unit 42 links to each other with Optical Network Terminal M3-2401 46 with second Optical Amplifier Unit 31, Optical Network Terminal M3-2401 46 and the 2nd AP47, integrated access equipment 48 links to each other, the 5th switch 50 and first core switch 9, second core switch 10 links to each other, and with the first integrated service access platform 49, the second integrated service access platform 51 links to each other.Phone, computer, wireless Internet access notebook, TV etc. insert respectively on Optical Network Terminal 45, Optical Network Terminal M3-2401 46, the 2nd AP47, integrated access equipment 48, the first integrated service access platform 49 and the second integrated service access platform, 51 terminal equipments of Optical Network Terminal ONT44, band wireless home gateway.First wireless transmission 3 and second wireless transmission 35 be as the emergency guarantee of optical cable digital circuit, when Cable's Fault appears in two cores, can guarantee that transfer of data do not interrupt.
Unification of three nets core switch of the present invention is meant three layers of intelligent exchange bearing data, voice and supervisory control system information exchange simultaneously, and it can provide 720Gbps exchange capacity, 432Mpps to wrap transfer capability; Support the selective QinQ characteristic; Support operation level 10GE interface; Adopt distributed frame; Support the dual master control power board, the passive backplane design, all veneers are supported hot plug; Power-supply system adopts the 1+1 redundancy backup, and supports the double loop power supply input; System reliability reaches 99.999%.
PON (comprising EPON and GPON) be one adopt point to the multidrop topology structure, utilize optical fiber and optical passive component to carry out physical layer transmission, the broadband access new technology of multiple business be provided by Ethernet protocol.This technology fully combines the advantage of passive optical network technique and ethernet technology, for configuration broadband access fibre circuit between local central machine room and terminal client scene provides a kind of method of high efficiency, low cost.
Structurally passive optical network technique possesses to save and lays cost because of only needing the characteristics of passive device in its some topological structure to multiple spot, the transmission, exempts from the advantage of later maintenance, is particularly suitable for the Access Network field, becomes the Technology of Light Access Network that enjoys favor.
PON fully combines the advantage of passive optical network technique and ethernet technology, by the structure and the technology of economical and efficient, for the Access Network end user provides the most effective a kind of wide band system technology.A typical PON passive optical network is formed (as Fig. 2) by optical line terminal (OLT:Optical Line Termination), optical network unit (ONU:OpticalNetwork Unit/ONT:Optical Network Termination), Optical Distribution Network (ODN:OpticalDistribution Network).Optical Distribution Network comprises optical branching device (Splitter) and optical fiber, and optical branching device is the passive fiber splitter, is an inactive component that connects optical line terminal and optical network unit, and its function is the distribution downlink data and concentrates upstream data.Adopt 802.3 frame broadcast technologies (as Fig. 3) at down direction, up direction is carried out the relevant access protocol (as Fig. 4) of time division multiplexing.Because the given time on the up direction only allows user's transmission, for fear of the conflict of different user, adopted Multi-point Control Protocol (Multi-point controlprotocol, MPCP).
Advantage of the present invention is as follows:
1, unification of three nets technology is a large amount of uses that reduce telecommunication cable in engineering, have realized that really " light advances copper and moves back " can save a large amount of copper conductors.
2, the Highgrade integration of unification of three nets signal transferring material and equipment has been saved in a large number and has been built supporting route tube seat facility, has reduced the installing engineering amount, has shortened the duration.
3, the Highgrade integration of unification of three nets signal transferring material and equipment has significantly reduced machine room area, energy resource consumption and maintenance load.
4, optical cable to floor wiring, has embodied wide, the easy expansion of strong interference immunity, bandwidth of system, advantage such as failure rate is low and the operating period is long to the family.
The hardware platform of 5 unification of three nets systems has replaced traditional telephone communication, network service, switch, telephony switching gear, television transmission network and signal to amplify distributing equipment, and safety defense monitoring system also is integrated in the bearer network.Consider aspect factors such as saving machine room area, electrical energy saving, extended probationary period and saving system maintenance cost, its overall investment will be far below traditional approach.
The fusion of many nets, high bandwidth high stability, the low integrated application network architecture that drops into high repayment.Problem such as solved thoroughly that field business such as disposing voice exchange network, cable TV network, data transmission network, video surveillance network, background music and emergent radio network respectively can not be integrated, deployment and long construction period, input height, bandwidth are low, be difficult for dilatation, the heavy expense height of maintenance management work, service function are single.
The present invention only need dispose machine room, light distribution rack and a power of computer room on a small scale.And traditional telecommunications, data, TV, safety defense monitoring system disposes respectively and need build machine room, wiring closet and power of computer room chamber etc. separately respectively, can save 3/4ths the peace amount of building like this.Dispose for convenient, can select a near position that is in the sub-district, campus, plant area center that machine room is set, the machine room nucleus equipment will be disposed separately with light distribution rack, core machine room and power-supply system are preferably in second floor, be not placed on basement as far as possible, the light distribution cabinet is because of belonging to passive facility, and anti-interference, corrosion-resistant, not influenced by humiture, can be deployed in basement.
The outside access; telecommunication cable should adopt the Loop Protection scheme, can insert UNICOM, telecommunications, mobile public network, determines to insert the bar number of E1 (2M) according to the actual user; as the words of 5000 users by 10: 1 configuration relayings; then 500/30=16.66 is equipped with 16 E1, as 10000 users; should be equipped with 32 E1 by same computational methods; this framework can satisfy the phone access demand No. 10000, also can expand according to actual needs, has the NGN soft switch also can be directly interconnected as operator.The Internet access bandwidth is looked actual user's number decision, and it is just passable generally not surpass 2000 family 200M, and this framework can satisfy and inserts the 1G bandwidth requirement, can satisfy 10000 to the 20000 Internet users demand of surfing the Net.Also can expand to higher bandwidth inserts, satisfy more the multiple internet user demand of surfing the Net according to actual conditions.The cable TV optical cable inserts by city planting ductwork, closes ripple in bearer network through optical branching device and EDFA amplifier, exports behind ONU one side partial wave, and is deployed to each room through splitter, can satisfy tens thousand of TV user and watch the digital TV in high resolution of cover more than 200 demand.In addition, the supervisory control system of keypoint parts such as the plant area of large and medium-sized enterprise, corporations, workshop, storehouse, road also can be carried by this framework, realize that many nets merge.
That the present invention is applicable to is newly-built, reorganization and expansion large and medium-sized enterprise, corporations, universities and colleges, biotope etc. all relate to telecommunications, data, TV and safety monitoring application, constitute enterprise's private network, campus network and community network, not only networking but also can merge separately with the existing network height with independent operation ability.The present invention is widely applicable, technology maturation, and engineering construction is simple, has remarkable advantage than traditional approach, represents future thrust.
Description of drawings
Fig. 1 is the FTTH Optical Access Network configuration diagram based on " unification of three nets ".Wherein, telecommunication public network inserts 1, the Internet inserts 2, first wireless transmission 3, radio and television Access Network 4, enterprise has LAN firewall 5 now, enterprise has local area network (LAN) first core switch 6 now, enterprise has local area network (LAN) second core switch 7 now, media gateway 8, unification of three nets first core switch 9, unification of three nets second core switch 10, Session Border Controller 11, first fire compartment wall 12, second fire compartment wall 13, the 3rd fire compartment wall 14, the 4th fire compartment wall 15, first switch 16, second switch 17, NGN soft switchcall server 18, the 5th fire compartment wall 19, the 3rd switch 20, the arrowband charges 21, network management system 22, the 4th switch 23, first database server 24, second database server 25, the 3rd database server 26, IN service gateway 27, gigabit ethernet passive optical network (GPON) 28, optical line terminal equipment (EPON) 29, first Optical Amplifier Unit 30, second Optical Amplifier Unit 31, ONU32, digital monitor system 33, broadband charging 34, second wireless transmission 35, the first safety service gateway 36, the second safety service gateway 37, server 38, optical branching device 39, first spectrophotometric unit 40, second spectrophotometric unit 41, the 3rd spectrophotometric unit 42, AP43, Optical Network Terminal ONT44, the Optical Network Terminal 45 of band wireless home gateway, Optical Network Terminal M3-2401 46, AP47, integrated access equipment 48, the first integrated service access platform 49, the 5th switch 50, the second integrated service access platform 51.
Fig. 2 is a major technique implementation PON technical network networking schematic diagram of the present invention.The PON mouth of OLT (can be 1:2,4,8,16,32,64,128 etc. after the optical branching device beam split, to satisfy the different access bandwidth requirements of ONU) access ONU, its transmission range can reach 20 kms, the HDTV signal can close ripple in ODN through Optical Amplifier Unit simultaneously, realizes telecommunications, data, TV network signal unification of three nets transmission.
Fig. 3 is a PON technology downstream data flow schematic diagram.What adopt is 802.3 frame broadcast technologies.
Fig. 4 is a PON technology upstream schematic diagram, what adopt is the relevant access protocol of time division multiplexing, because the given time on the up direction only allows user's transmission, conflict for fear of different user, adopted Multi-point Control Protocol (Multi-point control protocol, MPCP).
Embodiment
Fig. 1~Fig. 4 is the specific embodiment of the present invention.The present invention has been successfully applied to Shoudu Iron and Steel Co and has moved steel digital cells first stage of the project.Concrete performance:
1, building overview
● about 13.44 ten thousand square metres of overall floorage has 31 doors of seven apartments, 6.83 ten thousand square metres of construction areas;
● No. 1 building is building, the modular self-contained apartment of Floor 12, ground Floor 12, terraced 4 families, totally 144 families;
● 2, No. 3 buildings are building, the modular self-contained apartment of nine floor, nine layers on the ground, and terraced 4 families, totally 108 families, B1 is the indoor bicycle parking area;
● No. 4 building is building, the modular self-contained apartment of Floor 12, ground Floor 12, terraced 4 families, totally 192 families;
● No. 5 building is building, the modular self-contained apartment of one 6 floor, six layers on the ground, and one lift with two users, totally 72 families;
● 6,7# building project, 6, No. 7 buildings are building, the modular self-contained apartment of one 6 floor, six layers on the ground, one lift with two users, totally 72 families.
● formula apartment, hotel is made up of A, B, Building C, 5.53 ten thousand square metres of construction areas, 16 floor heights; Wherein the Building A is as the hotel, and B, Building C are the worker apartment.
● complex building is four layers, 9300 square metres; Be used for estate management and part food and beverage sevice.
2, capital equipment configuring condition
According to the networking mode of Fig. 1, this engineering core switch adopts the S8505 core switch of Huawei Company.Consider that the large-scale application unification of three nets is beyond example domestic, have certain risk, for minimizing cost, we have only disposed the separate unit core switch in this engineering.
We have chosen the core of the C8000 of Wuhan long light company as the unification of three nets Access Network OLT equipment, and this engineering has disposed 2.We choose Optical Amplifier Unit also is 16 road optical amplifier apparatus of the long light in Wuhan.
Set type apartment totally 768 families adopts the FTTH optical fiber mode of registering one's residence, and adds that elevator, light current service, monitoring etc. are equipped with 798 of 0421ONU equipment altogether.
Formula apartment, hotel adopts the FTTF mode, and fiber-to-the-floor disposes the 2401ONU86 platform altogether.This engineering is not considered the wireless Internet access mode.
Move steel factory offset from moving the about 16km of steel digital cells, what move that the steel mill district adopts is 6506 core switch of Cisco, and the naked fibre that we rent Tangshan UNICOM has been realized and moved the interconnected of steel digital cells core switch 8505.As emergent, we also have been equipped with the radio transmission apparatus of a cover 2.5G.
We have selected the softx3000 of Huawei Company for use phonological component, and this is a large-scale NGN Softswitch, can carry the voice call demand at 5 general-purpose families.The UMG8900 media gateway is chosen in cooperation and the arrowband charge system satisfies the voice communication requirement of whole sub-district.
3, realize business function
This engineering provides 5019 data points, 2745 voice points, 1961 cable TV points, 56 control points.By a core Drop cable realized online, seen TV, multi-service service such as make a phone call.Total information is put nearly 10,000.