3Com 3CWXPGS - AirProtect RF Planning Tool User Manual

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3Com 3CWXPGS - AirProtect RF Planning Tool User Manual Manual pdf 73 page image

WLAN Planning Wizard3Com ® AirProtect Planner User Guide65• Whether there are any Area Polygons defined.¾ If an Area Polygon is defined, Planner tries to place the calculated number of devices within the Area Polygon.¾ If there are no Area Polygons defined, Planner places the devices on the layout at the calculated locations.After either of the above steps, if still more devices are left, then Planner displays a message that the remainingdevices cannot be placed automatically and hence you can manually place the same at any desired location on thefloor map. Planner shows a list of these devices in the Devices Library dialog box under Auto AP section. You candrag and drop these devices on the floor map. The device is of the same type as was selected during Device Selectionin the WLAN planning wizard.6.3 Auto Channel AllocationDue to limited available frequency spectrum for 802.11 WLANs, dense AP deployment often requires spatial reuse offrequencies. The strategy you chose determines the set of available channels. Channels are assigned to minimize interference.If you had placed some devices manually, or had selected cross floor devices using the Filter option; Planner considersinterference from these devices during Auto Channel allocation to determine the best available channel for a device.Select either of the options for channel allocation strategy. Planner enables you to automatically allocate channels once the APsare placed on the floor map.Click from the Toolbar to invoke channel allocation strategy. The Channel Allocation Strategy dialog box appears.Figure 81. Channel Allocation StrategySpecify the channels you want to assign to the devices.• Non overlapping channels: These are channels that do not interfere with each other. For example, in the US, 2.4 GHzband offers three non‐overlapping channels – 1, 6, and 11.• All available channels: All channels are considered. For example, in the US 2.4 GHz band offers 11 channels. Usingpartially overlapping channels (for example, 1, 4, 7, 11) can improve overall WLAN capacity.6.4 Estimating the CapacityAt any given point, if you want to estimate the capacity, click on the Toolbar. Planner displays a dialog box mentioning theestimated capacity for the layout.