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WLAN CR Coexistence Beacon Protocol for Cognitive Radio-Based WLAN Network  

Kim, Hyun-Ju (인하대학교 정보통신대학원 멀티미디어통신망 연구실)
Yoo, Sang-Jo (인하대학교 정보통신대학원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.12B, 2007 , pp. 790-799 More about this Journal
Abstract
In this paper, we propose WLAN CR coexistence beacon protocol for thenext WLAN network. This method can provide WLAN with high-speed data rate in new WLAN architecture and network platform based on cognitive radio technology. WLAN CR devices that enter the CR network can know UHF channels by listening CR beacon including the coexistence parameter set and start using CR channel fast. During handover of WLAN device in UHF spectrums, WLAN device that lost their channel can change available channel by obtaining the current CR channel information from the CR beacon. In advance relaying coexistence parameter set to entire CR system, WLAN CR system can prepare own candidate channel set that is different with other CR system. In CR beacon and relay delay, we show the results that WLAN CR coexistence beacon protocol supports spectrum handover efficiently and decreases the probability of collision in candidate channel set.
Keywords
Cognitive Radio; WLAN_CR; Coexistence;
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