The factors that will have the most significant impact on the amount of wireless bandwidth available

to each station within a BSS are:

The number of client stations associated to the BSS

The presence of co-located (10m away) access points on non-overlapping channels

The number of client stations associated to the BSS affects the wireless bandwidth because each

station shares the same channel and medium with other stations in the same BSS. The more stations

there are, the more contention and collision there will be for the channel access, which reduces the

throughput and efficiency of the wireless communication. The wireless bandwidth available to each

station depends on how the access point allocates the channel resources and how the stations use

the channel time. For example, if the access point uses a round-robin scheduling algorithm, each

station will get an equal share of the channel time regardless of its data rate or traffic demand.

However, if the access point uses a proportional fair scheduling algorithm, each station will get a

share of the channel time that is proportional to its data rate and traffic demand, which may result in

higher or lower bandwidth for different stations.

The presence of co-located (10m away) access points on non-overlapping channels affects the

wireless bandwidth because even though they use different channels, they may still cause

interference and noise to each other due to channel leakage or imperfect filtering. The interference

and noise can degrade the signal quality and SNR of the wireless communication, which reduces the

data rate and throughput of the wireless communication. The wireless bandwidth available to each

station depends on how well the access point and the station can cope with the interference and

noise from other channels. For example, if the access point and the station support dynamic

frequency selection (DFS) or adaptive radio management (ARM), they can switch to a less congested

channel or adjust their output power or antenna gain to avoid or minimize interference from other

channels.

Reference: 1, Chapter 3, page 94; 2, Section 3.2