1. A Backoff Algorithm for LOWPAN Based on the Dynamically Backoff Exponent
- Author
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Ya Jun Zhang, Jin Liang Shi, and Guo Rong Chen
- Subjects
Exponential backoff ,Markov chain ,Computer science ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Throughput ,General Medicine ,Distributed coordination function ,Backoff exponent ,Computer Science::Performance ,Transmission (telecommunications) ,ComputingMethodologies_SYMBOLICANDALGEBRAICMANIPULATION ,Computer Science::Networking and Internet Architecture ,Algorithm ,Communication channel - Abstract
A mechanism that the backoff exponent changes dynamically was proposed aiming at the poor performance of backoff algorithm in IEEE 802.15.4 MAC protocol. The algorithm could adjust the initial backoff exponent according to the previous transmission status and the backoff exponent. A Markov chain model for the algorithm was established and the mathematical derivation for the model was carried out. The theoretical analysis and simulation results show that the model increases the channel access probability and system throughput. The optimized algorithm improves the performance of LOWPAN effectively. more...
- Published
- 2015
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