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MeshAP StructureArrowSpan Wireless Mesh Network Solutions

May 2007

Confidential

Node-to-node InterconnectionMeshAP 3100 – Dual 5GHz / Single 2.4GHz Wireless Mesh Access Point

Backhaul Mesh Link: Dual 5GHz AP: Single 2.4GHz

Mesh LinkMesh Link

Down LinkTo Mesh

Up LinkTo Mesh

ClientLink

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Data Packet Flow Chart

Backhaul

WPA WPA W

PA WPA W

PA WPA

WPA WPA W

PA

WPA

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WPA

WPA WPA W

PA

WPA WPA W

PA WPA W

PA WPA

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How Mesh Network Works

Mesh Manager

Station 1

Station 2

Station 3

Station 4

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MeshAP based on Hop Counts, Signal Strength to associate with each other

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Node-to-node Distance and Angle CalculationArrowSpan 802.11a & 802.11b Antenna

Length: 304m (1000ft) with -63.8dBm [54Mbps] 18dBm (54Mbps output power) + 8dBi antenna = 26dBm 26 - 93.7 (304m 5.8GHz open space loss) + 8 (receiving antenna gain) = -59.7dBm Minimum link sensitivity: -67dBm for 54Mbps

Height: 22.6m (74ft) with maximum 8dbi gain from Antenna Total 45.6m (149ft) of coverage [13°] with 8dbi gain from Antenna. - 3dbi RF loss with great than maximum height

L =304m (1000ft)13°

h=22.8m(74ft)

-3dbi

-3dbi* Based on Standard ArrowSpan 5GHz & 2.4GHz 8dBi Antenna