The AutoCAD drawing was sent from the customer to be formatted in LanPlanner. Customer gave the required LanPlanner details of the drawing. Which included, the height of the building, the length of the building (only required if drawing is not scale), and obstruction information. The warehouse building is 34 feet tall roughly 500′ in length and roughly 200′ in width. The building consisted of 28′ racks, a 34 feet tall 100′ X 50′ office, a 10′ tall 40′ X 20′ maintenance building and 34′ tall 135′ X 30′ fenced in security room and also conveyer equipment.After the the AutoCAD drawing was inserted into LanPlanner software, LanPlanner will format the building. Formatting the building is a crucial part in the site survey process. In order to accurately predict and measure the RF infrastructure the format process must be accurate. The format process consist of telling LanPlanner from the original drawing what type of obstruction is in the building and what the obstruction is made of and the height of the obstruction. With this building the main obstructions were the racks, chemical room, security room, and the building itself. The material of each obstruction has to be accurate as well in order for LanPlanner to know what dB loss will occur when an RF signal reaches it. Each AP is represented by a circle with a color giving the channel associated with the that AP. RED is channel is 11, Black is channel 1, and Yellow is channel 6.
After the format process, Access Points/Ports can be placed throughout the warehouse. For this Consumer Products Distributor building 16 Motorola AP300’s 802.11b/g with 2 5Ghz Omni Antenna’s for each AP were placed throughout the warehouse. Each AP300 was placed roughly 33′ from the ceiling.
With the AP’s placed then LanPlanner can predict the RSSI(Received Signal Strength Indication), SNR (Signal to Noise Ratio), Channels, and the throughput. For this Consumer Products Distributor LanPlanner predicted the 16 AP’s would cover the warehouse from 24Mbs to 54Mbs of coverage. In the colored heat map drawing of the warehouse, each color represents a different amount of RSSI or throughput. RED is a -50dBm(dBm is the power ratio in decibels) or can represent any where from 48Mbs to 54Mbs of throughput. YELLOW is a -60dBm or can also represent anywhere from 36Mbs to 48Mbs of throughput. GREEN is a -70dBm or also represented anywhere from 24Mbs to 36Mbs of throughput.
During a PC melt down, the measurement picture and file were corrupted. However, at the time the measurement for the facility was done the RF of coverage was as predicted.