Data Throughput Efficiency
2-8
Data Throughput Efficiency
Data throughput efficiency is measured in transmissions sent, lost, or received. When a data
transmission fails, the wireless device automatically retransmits the data. It is normal in
many environments for a transmission to fail occasionally. Data is not lost since the
wireless device automatically retransmits the data frames.
Many failed transmissions may result in longer network response times. Numerous
retransmissions require more time and bandwidth to maintain network communication
while contributing to the congestion of the medium. You can determine the number of
retransmissions in a wireless network using the RoamAbout Client Utility. The client utility
is provided in the RoamAbout PC Card kit and is installed on clients.
AP Density and Roaming
The AP Density is an advanced value that changes the sensitivity of the roaming client. The
distance range between RoamAbout APs listed below are estimated, and may differ
depending on your operating environment.
•
Low (default). The Low setting provides maximum coverage using a minimum
number of APs. This option is typically used for single-cell networks, but also provides
an efficient and cost effective solution for networks that include multiple wireless
clients. The coverage area ranges up to approximately 60+ meters.
•
Medium. The Medium setting can be used for environments where you desire clients
to disassociate sooner and roam to communicate at shorter distances/higher speeds
than the Low setting. The coverage area ranges approximately 40 to 60 meters.
•
High. The High setting should only be used when you are designing a wireless
infrastructure that includes a high concentration of AP devices. The coverage area
ranges approximately 20 to 40 meters.
•
Minicell. The Minicell setting should be used when you want to create small coverage
areas. The coverage area distance range is approximately 10 to 20 meters.
•
Microcell. The Microcell setting should be used when you want to create extremely
small coverage areas. The distance range is approximately 5 to 10 meters.
The AP has a Medium Density Distribution parameter that automatically distributes the AP
density setting to the RoamAbout wireless clients with the V7.44, or higher, driver. This
parameter is enabled by default.
