Recognition and Countermeasure to Hidden Terminal Problem by Packet Analysis in Wireless LAN
Akinori Kamio, Fumihito Sasamori, Shiro Handa, Osamu Takyu, Mai Ohta, Takeo Fujii · 2019
A carrier sense multiple access with collision avoidance (CSMA/CA) is an access protocol of wireless LAN (WLAN). When the carrier sensing is missed, the WLAN systems simultaneously access the channel and then packet collision occurs. It is a hidden terminal problem. In this paper, the recognition of the hidden terminal problem is performed by packet analysis. For suppressing the packet collision under the hidden terminal problem, the proposed countermeasure uses the modulation and coding set with high order modulation and low coding rate. Since the length of the packet is shorten, the probability of packet collision is reduced and thus the throughput and delay performances are improved.