標題: Enhancing Bluetooth performance in interference environments via channel-state-dependent packet scheduling with adaptive packet selection
作者: Shih, CH
Wang, KC
Liu, AY
資訊工程學系
Department of Computer Science
關鍵字: Bluetooth;adaptive packet selection;channel state dependent packet scheduling;interference environment
公開日期: 2004
摘要: In this paper, we propose a Bluetooth channel state dependent data segmentation and reassembly (CSD-SAR) scheme and a queue state dependent priority (QSD-PR) scheduling policy. The CSD-SAR maintains a receiving frequency table to predict channel conditions and selects the best packet type and packet size to transmit data. In addition, the QSD-PR also uses the receiving frequency table to avoid bad frequencies and gives a selected master-slave pair, which has more queued data to send between each other and has a higher priority to eliminate the wastage of slots. The conventional scheduling policy, Round Robin (RR), yields poor performance with the time division duplex (TDD) based MAC protocol and results in slot wastage and may not ensure fairness. Simulation results show that our proposed scheme achieves better link utilization and higher throughput with bounded delay compared to the RR scheme in error-free and error-prone environments. Our scheme can also eliminate interference to other wireless networks that share the same spectrum, such as WLANs, by avoiding selecting channels occupied by other networks.
URI: http://hdl.handle.net/11536/18368
ISBN: 0-7803-8523-3
期刊: 2004 IEEE 15TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-4, PROCEEDINGS
起始頁: 1183
結束頁: 1187
Appears in Collections:Conferences Paper