Psiber Data Systems RF3D 4 Planning Wireless Networks

manual

The Access Points tab lists all the access points currently planned, and allows you to

modify their properties. The properties of each access point include a name and a

description, the transmitter power, the channel setting, and the antenna orientation.

The orientation is expressed in terms of rotation in the horizontal plane and inclina-

tion from the vertical. The rotation is entered in degrees, as on a compass, measured

clockwise from the top of the plan: 0° indicates that the antenna is aimed “north”,

or towards the top of the plan; 90° is to the right, 180° towards the bottom, etc. In the

Tilt ﬁeld, a positive value indicates that the antenna is tilted upwards, and a negative

value indicates the inclination downwards. 0° means that the antenna is in its normal

orientation with respect to the horizontal plane.

In addition to walls and ﬂoors, enclosed spaces also contain many movable obstacles,

such as people in ofﬁces and merchandise in warehouses, and objects that would

be too difﬁcult to draw in individually, such as furniture, shelves etc. For this reason, the

Advanced tab allows you to set a global average attenuation factor to account for

such objects in different kinds of spaces.

Select Free Space if there is no additional loss to be anticipated, as in outdoor areas

such as parking lots or campus yards.

The default setting, Factory/Warehouse, factors in low to moderate loss for low-density

spaces such as warehouses.

The Ofﬁce setting adds moderate to high attenuation to account for the furniture

and persons present in typical ofﬁce environments.

4 Planning Wireless Networks

To plan a wireless network, start by determining which applications will eventually be

transported over the projected network. There are critical differences between applica-

tions that require greater redundancy, but only low data trafﬁc, such as warehousing

and logistics, and applications that require high bandwidth, such as voice-over-WLAN.