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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/11656

Title: Quality-of-service in wireless personal area networks
Authors: Wang, Teng-Hui;Shih, Ming-Yi;Deng, Der-Jiunn
Contributors: 資訊工程學系
Keywords: IEEE 802.15.4;LR-WPANs;GTS;QoS;Priority
Date: 2011-09
Issue Date: 2012-06-18T02:33:00Z
Publisher: Springer Verlag
Abstract: IEEE 802.15.4 standard defines the physical layer and medium access control layer protocols for low-rate wireless personal area networks (LR-WPANs). In IEEE 802.15.4 LR-WPANs, quality-of-service is supported by using the guaranteed time slots (GTS) to transmit real-time packets since a LR-WPAN device doesn’t need to contend the channel in the GTS. In the PAN coordinator, requests of GTS are allocated based on the first-come-first-service policy. However, with the increasing of multimedia applications, this original design has suffered from the lack of priority mechanism to support the transmission of real-time packets. In this paper, we propose a non-preemptive priority-based polling scheme for the GTS allocation in IEEE 802.15.4 LR-WPANs. The proposed scheme can ensure that the connections which have higher priority can transmit real-time packets quicker. The simulations show that the proposed scheme can achieve more GTS allocations, higher throughput, better bandwidth utilization and lower packets access delay time.
Relation: 2nd International Conference on the Emerging Areas of Security-Enriched Urban Computing and Smart Grids, SUComS 2011, Hualien, September 21-23, 2011: 307-316
Appears in Collections:[資訊工程學系] 會議論文

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