Saher S. Manaseer

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The collision probability in the MAC layer could become very high when a poor backoff algorithm is used, especially in dense networks. The Binary Exponential Backoff (BEB) used in the IEEE 802.11 MAC protocol uses a uniform random distribution to choose the backoff value. This often leads to reducing the effect of window size increment. This paper proposes(More)
The most known drawback of IEEE 802.11 MAC is the low performance in terms of throughput in case of congested networks. Backoff time is one of the most important factors that govern the collision probability in Ad-Hoc network. Using backoff algorithm could push the performance up and decrease collision rate. This study presents an enhanced fibonacci backoff(More)
AbstRAct In wireless communication environments, backoff is traditionally based on the IEEE binary exponential backoff (BEB). Using BEB results in a high delay in message transmission, collisions and ultimately wasting the limited available bandwidth. As each node has to obtain medium access before transmitting a message, in dense networks, the collision(More)
ABSTrACT In wireless communication environments, backoff is traditionally based on the IEEE binary exponential backoff (BEB). Using BEB results in a high delay in message transmission, collisions, and ultimately wasting the limited available bandwidth. As each node has to obtain medium access before transmitting a message, in dense networks, the collision(More)
— The standard IEEE 802.11 MAC protocol uses the Binary Exponential Backoff algorithm. The Binary Exponential Backoff makes exponential increments to contention window sizes. This work has studied the effect of choosing a combination between linear, exponential and logarithmic increments to contention windows. Results have shown that choosing the right(More)
Medium Access Control (MAC). BEB uses a uniform random distribution to choose the backoff value, that often leads to reducing the effect of window size increment. This technical report introduces a modified logarithmic backoff algorithm that uses logarithmic increment instead of exponential extension of window size to eliminate the degrading effect of(More)
Broadcasting is an essential operation in Mobile ad hoc Networks (MANETs) environments. It is used in the initial phase of route discovery process in many reactive protocols. Although broadcasting is simple, it causes the well known broadcast storm problem, which is a result of packet redundancy, contention and collision. A probabilistic scheme has been(More)