Grouping in Wireless LANS to Increase Throughput by Collision Control

A network should be highly scalable i.e. high data rates, high throughput, and low errors. Usage of Wireless LAN’s using IEEE 802.11n-2009 standard has increased in the number of stations. As the number of stations increases the path becomes congested and will lead to collisions. The IEEE 802.11n-2009 standard provides a high data rate of 100 Mbps at the physical layer but not that data speed at MAC layer. The techniques like the frame aggregation and block-ACK frames does increase the efficiency at MAC layer but none reduce the collision. Hence collision control is much necessary for achieving high data rates to serve large number of stations. We propose Grouping scheme to reduce the collision rate. Here the stations are grouped and a leader is elected. Only the leaders of respective group contend; which decrease the collision. We compare our simulation results with the DCF with frame aggregation and without frame aggregation.