資料載入中.....
|
請使用永久網址來引用或連結此文件:
http://ir.ncue.edu.tw/ir/handle/987654321/11656
|
| 題名: | Quality-of-service in wireless personal area networks |
| 作者: | Wang, Teng-Hui;Shih, Ming-Yi;Deng, Der-Jiunn |
| 貢獻者: | 資訊工程學系 |
| 關鍵詞: | IEEE 802.15.4;LR-WPANs;GTS;QoS;Priority |
| 日期: | 2011-09
|
| 上傳時間: | 2012-06-18T02:33:00Z
|
| 出版者: | Springer Verlag |
| 摘要: | 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. |
| 關聯: | 2nd International Conference on the Emerging Areas of Security-Enriched Urban Computing and Smart Grids, SUComS 2011, Hualien, September 21-23, 2011: 307-316 |
| 顯示於類別: | [資訊工程學系] 會議論文
|
文件中的檔案:
| 檔案 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | 0Kb | HTML | 786 | 檢視/開啟 |
|
在NCUEIR中所有的資料項目都受到原著作權保護.
|
