A Novel Spectrum Sharing Technique Based on Channel Occupancy Rate Information
A Novel Spectrum Sharing Technique Based on Channel Occupancy Rate Information
复制标题
DOI：
10.1109/glocom.2009.5425989
复制
发表时间：
2009-11
期刊：
影响因子：
--
通讯作者：
K. Umebayashi;Kohei Kasahara;Y. Kamiya;Yasuo Suzuki
中科院分区：
文献类型：
--
作者：
K. Umebayashi;Kohei Kasahara;Y. Kamiya;Yasuo Suzuki
本文针对基于 IEEE 802.11a 的现有无线局域网 (LAN) 系统（主要用户）提出了一种新颖的频谱共享技术，以及配备了所提出的频谱共享技术的新系统（次要用户）。假定两个系统均按照具有冲突避免功能的载波侦听多路访问 (CSMA/CA) 协议运行。频谱共享技术的目标是在维持主用户吞吐量的同时实现更高的次要用户吞吐量。我们利用一个关键参数，即信道占用率（COR），它是主系统或辅助系统的信道使用率。所提出的频谱共享技术是次要用户的最小CW尺寸选择（MCWSS），以控制次要系统的COR。我们设定了另一个目标，即在维持主系统 COR 的同时最大化辅助系统的 COR。通过计算机模拟，我们表明，通过MCWSS，次要用户可以维持对主系统的约束并实现目标COR性能，并且在保持主要用户的吞吐量性能的同时，导致次要用户更高的吞吐量性能。
This paper proposes a novel spectrum sharing technique for an existing wireless local area network (LAN) system (primary user) based on IEEE 802.11a, and a new system (secondary user) equipped with the proposed spectrum sharing technique. Both systems are assumed to behave according to carrier sense multiple accesses with collision avoidance (CSMA/CA) protocol. An objective of spectrum sharing techniques is to achieve higher secondary user's throughput while the primary user's throughput is maintained. We utilize one key parameter, the channel occupancy rate (COR), which is the channel usage rate of the primary or secondary system. The proposed spectrum sharing technique is the minimum CW size selection (MCWSS) for secondary users to control the COR of secondary system. We set an alternative objective which is to maximize the COR for secondary system while COR of the primary system is maintained. By computer simulations, we show that by the MCWSS secondary user can maintain the constraint for the primary system and achieve the target COR performance and it leads to the higher secondary user's throughput performance, while maintaining the primary user's throughput performance.