For Snohomish County

ITS Washington, November 12, 2008

Wireless Communications in ITS

Outline

Existing Applications Interconnect Remote Communications to Field

Original Future Concept

Plans Can Change

Existing Applications - Interconnect

164th St SE & 3rd Ave SE to 164th St SE & 9th Ave SE

Connects Mill Creek with Snohomish County

ENCOM 5200 ( RS-232) 900 MHz

Existing Applications - Interconnect

Existing Applications (Connect to Field)

Notebook Computer

Wireless Air Card (Cellular Modem)

Connect to System

Connect to Signal/PTZ/Video Detection

Existing Applications (Connect to Field)

WirelessTMC

Existing System Communications

Dial up Telephone To field masters To isolated. Stand alone signals Very slow Lots of lines and lots of modems Expensive

DSL/Cable Faster Still expensive

Original Future Concept

Fiber Optics not Considered an Option. Broad geographic region Lack of available fiber Complicated and expensive

Total Wireless System was the Idea Arterial mesh network (point to multi

point) High capacity backhaul system (point to

point)

Original Future Concept

Original Future Concept

Original Future ConceptWireless Arterial Mesh

Network

Original Future Concept

Original Future Concept

Minimum Radio Requirements

5.8 or 5.9 GHz 50 Mb minimum bandwidth for

intersections.

300 Mb minimum bandwidth for backhaul

Original Future Concept

Installation Requirements

Multiple Routes

Good Line of Sight

Turn Key Operation

Be Flexible

Plans Change

Enter Black Rock Cable (Fiber Network)

Connections to Major Corridors

Pull 12 Strand Fiber and Splice to Signal

Black Rock Needs to get to SR 9

Snohomish County Conduit Banked to SR 9

Plans Change Again

Enter County DIS

Purchase of Dark Fiber from Black Rock

Eventual Multiple Path Fiber Connections to all signals

May Retain Backhaul for Emergency Redundancy