Low‐jitter slot assignment algorithm for deadline‐aware packet transmission in wireless video surveillance sensor networks |
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Authors: | Li Qiang Tao Feng Qi Yu |
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Affiliation: | 1. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100080, China;2. ShenZhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;4. The Chinese University of Hong Kong, Hong Kong |
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Abstract: | This work presents a distributed time‐slot assignment algorithm which adopts TDMA as Medium Access Control, specially suited to support applications with strict delay, jitter, and throughput requirements characterized by convergecast traffic pattern in sensor networks. (e.g. wireless video surveillance sensor networks). The proposed algorithm has three characteristics: (1) every node is guaranteed a path to the base station for its data delivery. In the path, sufficient resource is reserved and weighted fairness can be achieved. (2) It uses cascading time‐slot assignment and jitter minimization algorithm in each node to minimize jitter and end‐to‐end delay. (3) Nodes are only active during their scheduled slots and sleep otherwise. This offers energy saving by reducing idle listening and avoiding overhearing. The performance of the proposed algorithm is evaluated over simulations and analyzed theoretically in comparison with existing slot assignment algorithm. The results show that our algorithm provides lower end‐to‐end delay, jitter, and higher throughput. Copyright © 2010 John Wiley & Sons, Ltd. |
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Keywords: | delay energy efficiency jitter TDMA sensor network |
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