A novel hidden station detection mechanism in IEEE 802.11 WLAN
A novel hidden station detection mechanism in IEEE 802.11 WLAN
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IEEE 802.11 WLAN 中新型隐藏站检测机制
DOI：
10.1109/lcomm.2006.1665126
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Kyunghun Jang
中科院分区：
文献类型：
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作者：
Youngsoo Kim;Jeonggyun Yu;Sunghyun Choi;Kyunghun Jang
流行的IEEE 802.11无线局域网（WLAN）是基于载波感知多址避免碰撞（CSMA/CA），其中站在传输之前听取媒体以避免碰撞。如果存在无法听到对方的电台，即隐藏电台，则潜在的碰撞概率会增加，从而大大降低网络吞吐量。RTS/CTS （request-to-send/clear-to-send）帧交换是针对隐站问题的一种解决方案，但是RTS/CTS交换本身在传输控制帧的过程中消耗了网络资源。为了使网络吞吐量最大化，只有当网络中存在隐藏站时，我们才需要自适应地使用RTS/CTS交换。在这封信中，提出了一个简单但非常有效的隐藏站检测机制。一旦一个站点通过提议的检测机制检测到隐藏站点，它就可以触发RTS/CTS交换的使用。仿真结果表明，该机制能够提供最大的系统吞吐量性能
The popular IEEE 802.11 wireless local area network (WLAN) is based on a carrier sense multiple access with collision avoidance (CSMA/CA), where a station listens to the medium before transmission in order to avoid collision. If there exist stations which can not hear each other, i.e., hidden stations, the potential collision probability increases, thus dramatically degrading the network throughput. The RTS/CTS (request-to-send/clear-to-send) frame exchange is a solution for the hidden station problem, but the RTS/CTS exchange itself consumes the network resources by transmitting the control frames. In order to maximize the network throughput, we need to use the RTS/CTS exchange adaptively only when hidden stations exist in the network. In this letter, a simple but very effective hidden station detection mechanism is proposed. Once a station detects the hidden stations via the proposed detection mechanism, it can trigger the usage of the RTS/CTS exchange. The simulation results demonstrate that the proposed mechanism can provide the maximum system throughput performance