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|Title:||A medium access control protocol for UWB sensor networks with QoS support|
|Source:||Tan, J.,Chan, M.-C.,Tan, H.-X.,Kong, P.-Y.,Tham, C.-K. (2008). A medium access control protocol for UWB sensor networks with QoS support. Proceedings - Conference on Local Computer Networks, LCN : 289-296. ScholarBank@NUS Repository. https://doi.org/10.1109/LCN.2008.4664182|
|Abstract:||Ultra-wideband (UWB) is a physical (PHY) layer technology that promises high transmission rates, as well as high resistance to noise and multipath effects. However, the impulse-based nature of UWB, coupled with its low transmission power, makes it difficult to enable efficient detection of the signals. Consequently, conventional carrier-sensing based MAC protocols cannot be used with a UWB PHY. In this paper, we propose SASW-CR - a Slotted Aloha MAC protocol for UWB networks with Sliding contention Window and Coperative Retransmissions, which provides QoS support without the use of carrier sensing. SASW-CR utilizes the slotted-Aloha technique to avoid carrier sensing and reduce packet collisions. In addition, it makes use of differentiated contention windows to provide varying classes of QoS for different traffic classes. A cooperative retransmission technique is also introduced to improve the overall traffic throughput and reduce end-to-end delay. The efficacy of our protocol is demonstrated through simulations. ©2008 IEEE.|
|Source Title:||Proceedings - Conference on Local Computer Networks, LCN|
|Appears in Collections:||Staff Publications|
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