Modern Fiber Optic Network Topology

Transcription

1 Modern Fiber Optic Network Topology

2 From Access to Core Swedish Electrical Committee SEK 434, How to build fiber optic access networks FTTX networks This presentation is work-in-progress to enhance the standard with guidelines for active equipment and we are going to do a; FTTX network design From end-user to the network core Estimated costs for passive and active equipment Considering design issues like flexibility, transparency and redundancy and multiple operator support Providing services like Internet and virtual private networks carrying QoS sensitive services like voice and video

3 Network Hierarchy National networks Regional networks Infrastructures with multiple operators Municipal/City networks Access networks

4 Requirements on the ICT infrastructure Organization and Questions at Issue Application End user equipment, programs and data bases etc. IP-level IP-operator s provides network services to the end user Information security Quality of service? Own/ buy operation/ Redundancy? Transmission level Network operators provides several logical connections over one physical connection Cable and antenna level Cable ( dark fiber ) and antenna-systems Duct and mast level Ducts for cables and towers for antennas Own/ buy operation/ Redundancy? Own cables? Rent/buy dark fiber? Own ducting? Land agreement? Way-leave? Note: this is NOT to compare with the OSI model

5 At the physical layer, ducts are meshed between passive fiber cross-connect nodes to provide redundancy

6 At national/regional level multiple operators provide redundancy Connects the regions of a country Connecting international nodes and regional nodes Of national interest Few owners Highest security

7 Regional Networks Community Connecting Network Sundsvall Connects Community Main Nodes within a region Full redundancy within the region Co-operation between communities Is a link between the national networks and the different communities networks Bergsjö Ljusdal Hudiksvall Edsbyn Bollnäs Söderhamn Gävle

8 City or Municipality Area Network (city rings) or Urban Networks A broadband infrastructure with flexibility to cover the present and future need for high capacity network services Covers an area within the community Connects the community main node to the access nodes There should be two main nodes for redundancy At least 96 SM standard fiber optic cable or micro cable (as a start) It will facilitate the establishing of cost-effective solutions for access networks that connects the enduser (x).

9 Access Network FWA Is a network that access end-users or groups of end-users A major part of the access network is located on private property An access network will connect end-users in residential houses, row houses, block of apartments, companies, hospitals, schools and authorities The access network may connect antennas for FWA (Fixed Wireless Access) or WLAN (Wireless LAN) and antennas in the mobile network (2G, 3G, and..) Access node Mobile, 2G, 5G City network Fiber concentration point = Glass Node Fiber to the end-user

10 Nodes Nodes can be anything from large spaces blasted into the mountain, small freestanding technique sheds, containers, wallmounted cupboard s or even manholes.

11 Security Demands Increases with the Importance of the Node Security demands increases with the importance of the node To remember for all types of nodes: Design of the premises Mechanical break-in protection Burglar alarm Passage control with log Fire alarm installation Fire-extinguishing installation Operation alarm Environment and climate control Electricity (power) supply Lightning protection EMC

12 Node facility with hotel for operators providing for multiple operator networks Splice boxes for fiber optic cables and micro cables Optical fiber distribution fields Regional networks hotel With space for active equipment Lockable cabinets Climate/ cooling - Optical fiber distribution fields Municipality area networks, city networks or urban networks Racks Power UPS

13 Power UPS Splice boxes for fiber optic cables and micro cables Racks Optical fiber distribution fields Regional networks Optical fiber distribution fields Municipality area networks, city networks or urban networks Climate/ cooling Lockable cabinets - IP-hotel IP-hotel Racks With space for active equipment Lockable cabinets Power UPS With space for active equipment Optical fiber distribution fields Regional networks Optical fiber distribution fields Municipality area networks, city networks or urban networks Climate/ cooling Splice boxes for fiber optic cables and micro cables There should be a Back-up

14 FTTx in dense populated areas Trunk Cabling N x 192 SM fibre Access network Multi tenant buildings grouped within a limited area. The distance to the access Access network Regional network City network/ Urban ring SM fiber Access network Access network node can be from 1-15 km Number of apartments in the access node area will vary from 5000 to Access node is preferably centrally located in the area Provides for multiple operators at the main node and/or at the access nodes. Community Main node Access node Fiber cross-connect Glass node

15 Multi tenant building, Example Individual ducts to each apartment on every floor At least one pair of single mode fiber installed to every apartment Glass node in basement A glass node is a permenently joined (spliced) cross connect 24,48,96,192 SM fibre trunk cables all the way to the access node

16 Costs for a 24 apartment building 650 skr or 70 eu per apartment Only passive equipment within the building!

17 Area with < 1km to access node A total of 840 skr per apartment 90 eu

18 Which costs are not included Trunk cabling for longer distances to access node* Customer premises Equipment (CPE)* Active equipment in access node* Installation in the building Digging and laying of ducts Blowing fiber through ducts Access node, facility, electricity, heating/cooling, maintenance Cross-connect in access node

19 Nine (9) Access Nodes with 6 Km Radius

20 Three (3) Access Nodes with 12 Km Radius

21 Access node at longer distance Add 1Km 192 SM trunk cable at 45 skr / m 50 eu per customer per kilometre

22 Active equipment CPE ~ eu Port cost of access switch ~ eu Fiber transceivers (SFP for gigabit) 50 eu each Shared cost for aggregated capacity, uplink (access to main node, 10Gb link shared between 100 end-users) ~100 eu Shared cost for inter AS capacity (100Gb shared between end users) ~100 eu Total active equipment costs: eu But, Active equipment will be replaced multiple times during the lifetime of the fiber

23 Access net with both rural and dense areas Access node Everything is still passive except for CPE and Access node Redundant ducts Compared to dense areas the distance to the access node increases N x 192 SM fibre cable Dense Node with passive cross-connect Rural Node with passive cross-connect Passive cross-connect Glass node

24 Summary Municipality area network Community Main node Municipality node Regional network Municipality connecting network Community Main node End-user nodes Distribution node Access nodes Urban network City area network Please note!!! Names of networks and nodes are no standards they just describe the functionality

25 Broadband Network model CPE CPE Transparent Network CPE CPE CPE CPE CPE CPE CPE

26 Broadband Network model Core Node Access Node CPE Interfaces Transparent Network

27 Access node radius Customer Km Access Node

28 Passive Cross Connect Customer Km Old Access Node Access Node New Trunk