A Dynamic Time Slot Allocation Scheme for Hybrid CSMA/TDMA MAC Protocol

被引：18
|
作者：
Shrestha, Bharat [1 ]
Choi, Kae Won [2 ]
Hossain, Ekram [1 ]
机构：
[1] Univ Manitoba, Dept Elect & Comp Engn, Winnipeg, MB R3T 5V6, Canada
[2] Seoul Natl Univ Sci & Technol SeoulTech, Dept Comp Sci & Engn, Seoul, South Korea
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2013年 / 2卷 / 05期
关键词：
Hybrid medium access control (MAC); carrier-sense multiple access (CSMA); time-division multiple access (TDMA); IEEE; 802.15.3; 802.11ad; 802.15.4;
D O I：
10.1109/WCL.2013.070113.130185
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The hybrid carrier-sense multiple access (CSMA)/time-division multiple access (TDMA) medium access control (MAC) protocol combines the strengths of CSMA and TDMA protocols. In this letter, we propose a dynamic queue-length-based time slot allocation scheme for the hybrid CSMA/TDMA MAC protocol to improve channel utilization considering the uncertainty in queue length information. Due to the lack of a dedicated control channel from a device to the coordinator, the queue length in a device can be reported to the coordinator only in an intermittent manner. To overcome this difficulty, the proposed scheme calculates the probability mass function (pmf) of the distribution of the queue length and allocates slots during the TDMA period based on this pmf. The simulation results show that the proposed slot allocation scheme outperforms the time slot allocation scheme which does not take into account the distribution of the queue length.
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页码：535 / 538
页数：4
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