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In wireless personal area network, a channel is shared by a number of nodes. Therefore packet collision may take place which degrades the system performance. To enhance the performance of slotted carrier sense multiple access (CSMA/CA) for IEEE 802.15.4 wireless sensor networks, we propose a collision-aware backoff algorithm (CABEB), which can dynamically select a suitable backoff period based on...
The IEEE 802.15.4 standard uses carrier sense multiple access with collision avoidance (CSMA/CA) algorithm as the medium access mechanism, which employs a binary exponential backoff (BEB) mechanism to control the access of nodes to the wireless medium. However, CSMA/CA algorithm does not support network self-adaptivity and differentiated services. We address these problems by proposing an adaptive...
The IEEE 802.15.4 standard uses carrier sense multiple access with collision avoidance (CSMA/CA) as the medium access mechanism. This mechanism employs a binary exponential backoff (BEB) algorithm to control the access of nodes to the wireless medium. The main drawbacks of this algorithm are that the range of the backoff exponent is very small and it updates the length of the backoff period in a deterministic...
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