Enhancement of IEEE 802.11b Distributed Coordination Function to reduce packet retransmission

Fragmentation and retransmission of data fragment, without renewing the channel reservation, on IEEE 802.11b

“…For this reason, the works in [5], [6] do not conform to the physical layer actual functioning. Moreover, in models [4], [7], [8], [9], [10], the operating principle of the physical layer is almost satisfied, as indicated in Table 1. Furthermore, the authors in models [2], [11], [12], [13], [14] , assume that the environment is ideal (BER = 0 i.e.…”

“…The proposed model is equipped with an algorithm adaptable to the collision rate, and able to differentiate between collisions and noise errors. An extension of the analytical model of the 802.11 DCF network is presented in [9], the authors assumed an unsaturated environment, homogeneous traffic and non-ideal transmission channel. They modeled the modified DCF as a 2D-MCM in order to enhance the unsaturation throughput and reduces packet delay.…”

“…The proposed protocol improves the ST, effectively reduces the average time to access the channel, and in order to derive an optimal CW. The work [12] proposed a new 2D-MCM, to analyze the ST of the IEEE 802.11 DCF protocol in the presence of hidden nodes, and in an ideal transmission In the models described in [2], [5], [6], [7], [9], [13], [15], when a station wants to transmit data, decrements the selected backoff successively, without taking into account that the transmission channel is occupied by another station (the transition probability that the channel is occupied p busy = 0). When backoff time becomes zero, the station starts transmitting the packet, with success or failure.…”