Wireless Data Technologies MM Clements

Last Week WiMAX has LOS and NLOS Backhaul will be p-to-p and LOS NLOS suffers from flutter but can be solved with smart base stations WiMAX may replace last mile to subscribers May not eclipse 802.11x for some time Customers may get up to 15 Mbps from access points, MWT

This week………. Telabria Case Study Steps needed to deploy a WiMAX network MWT

Telabria Local company Providing wireless backhaul in Kent 2nd year of trading Working with local government Using 5.8 GHz for local access Neither LOS nor NLOS – gives good multipath propagation MWT

Offered Products Home 1.5 & 3 Mbps down, 512 kbps up Commercial offerings 5 and 10 Mbps VoIP offered too Free WiFI hotspot access for customers Other benefits – see text for lecture MWT

Network Infrastructure MWT

Two Tiered Network Backhaul – LOS microwave High power - licensed Local Service – 5.8 GHz 5.8 GHz is unlicensed Others may use this frequency Low power only allowed MWT

State of Network, 2005 MWT

State of Network 2007 MWT

Network Backhaul Currently expanding Medway came online 1st quarter 2006 Herne Bay, Dover, Folkestone expected soon NOC in Sittingbourne MWT

Local Government Partnership Working with councils Giving free services Gaining rooftop access Essential for WiMAX service Cuts leasing costs Over 100 roofs in Chatham MWT

Setting up Network Financial Planning Models – Wholly company owned Customers must be available Partnership City or town owned Financial opportunities essential for viability MWT

Inventories The current and proposed fixed connectivity options offered by local providers Current and future frequencies that are/ will be available An inventory of assets such as buildings, towers etc. to set up the wireless hardware MWT

Proposed use of Network Defines BW requirements Fixed connectivity VoIP services Mobile data services Video surveillance Etc. MWT

5 Year Financial Plan Defines customer take-up Includes costs of setup and maintenance and training etc. Hidden savings e.g. from surveillance to be factored in MWT

Site Survey Spectral analysis Tower documentation and mapping LOS test – id in doubt, set up test rig Power, space requirements, cable runs etc. MWT

Network Design Summary of objectives, goals, expectations, advantages, challenges, frequencies etc. Blueprint of required hardware & vendors Complete costing Power budget Site survey results – tower dimensions etc. Coverage maps MWT

Site Planning and Construction Site owner must agree to plans Permission for structure from local authority Site walk to view actual site Spectrum licence from Ofcom Staging – buying and setting up hardware Installation of switches, cabling Rigging – set up of dish Testing MWT

Monitoring of Devices Check devices work Set up baselines for performance Threshold traps of 25% set up Alarms call NOC and key staff if SLA at risk Network collisions & data loss should be monitored MWT

Device Maintenance Remote reset or configuration may work Otherwise truck roll required Firmware updates Visual inspection every 6 months Staff should be able to log in serially or by Ethernet Plans for access 24/7 must be available MWT

Conclusion Telabria are expanding rapidly – taken over late 2006 Each new area needs to be treated differently Planning Site survey Network Design Site Planning Construction Maintenance MWT