Performance Evaluation of WPAN MAC Protocol with Improved Backoff Algorithm

The wireless personal area network (WPAN) is an emerging wireless technology for future short range indoor and outdoor communication applications. The IEEE 802.15.3 medium access control (MAC) is proposed, especially, for short range high data rates applications in WPAN, to coordinate the access to the wireless medium among the competing devices. A thought of an improved backoff algorithm (IBA) was brought up in [3]. In this paper, we propose an IBA for contention process of IEEE 802.15.3, where binary exponential backoff (BEB) is originally used. Here, we compare both BEB and IBA algorithms, and show the superiority of IBA over BEB in terms of channel efficiency, channel access delay and energy efficiency.