iQueue-MAC: A Traffic Adaptive duty-cycled MAC Protocol With Dynamic Slot Allocation

Abstract : Duty-cycling technique has been widely adopted in MAC protocols for wireless sensor networks to conserve energy. However, low duty-cycle also leads to limited throughput in most of existing solutions. In this paper, we propose iQueue-MAC to provide immediate yet energy-efficient throughput enhancement for dealing with burst or heavy traffic. Combined with CSMA/CA, iQueue-MAC makes use of queue length of each sensor node and allocates suitable TDMA slots to them for packets transmission. During light traffic period, no extra slots will be allocated; iQueue-MAC acts like other low duty-cycle MACs to conserve power. While in burst or heavy traffic period, iQueue-MAC senses the build up of packet queues and dynamically schedules adequate number of slots for packet transmission. We have implemented iQueue-MAC on STM32W108 chips that offer IEEE 802.15.4 standard communication. We set up several real- world experimental scenarios, including a 46 nodes multi-hop test-bed for simulating a general application, and conducted numerous experiments to evaluate iQueue-MAC, in comparison with other traffic adaptive duty-cycle protocols, such as multi- channel version RI-MAC and CoSenS. Results clearly show that iQueue-MAC outperforms multi-channel version of RI-MAC and CoSenS in terms of packet delay and throughput.
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Communication dans un congrès
IEEE SECON, Jun 2013, New Orleans, United States. IEEE, pp.95-103, 2013, 10th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2013. 〈10.1109/SAHCN.2013.6644967〉
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Shuguo Zhuo, Zhi Wang, Ye-Qiong Song, Zhibo Wang, Almeda Luis. iQueue-MAC: A Traffic Adaptive duty-cycled MAC Protocol With Dynamic Slot Allocation. IEEE SECON, Jun 2013, New Orleans, United States. IEEE, pp.95-103, 2013, 10th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2013. 〈10.1109/SAHCN.2013.6644967〉. 〈hal-00905822〉

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