| Uncoordinated Dynamic Frequency Allocation Schemes based on Cognitive Radio in Mobile Cellular Networks |
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Hyun Yu, Jun-Woo Jung, Jong-Kwan Lee, Jae-Sung Lim |
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Ajou University |
| 이동셀룰러망에서 무선 인지 기반 비협력 동적 주파수 자원 할당 기법 |
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유현, 정준우, 이종관, 임재성 |
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아주대학교 |
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| Abstract |
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In this paper, we propose uncoordinated dynamic frequency(channel) allocation schemes based on cognitive radio in mobile cellular networks(MCNs). Under the assumptions that mobile base stations are equipped with cognitive radio(CR) function and they construct uncoordinated network, the proposed scheme enables the MCNs by suppression of successive channel switching and management of channel allocation in a dynamic and distributed manner. The proposed scheme is composed of two phase processes. In the first phase, highly orthogonal sequences are generated and assigned to mobile base stations. In the second phase, each mobile base station is allocated a channel according to the pre-assigned orthogonal sequences. Simulation results show that the number of successive spectrum switching is reduced significantly compared with the random switching scheme. |
| Key Words:
Mobile Base Station, Mobile Subscriber Access Point(MSAP), Uncoordinated Dynamic Channel Allocation (UDCA), Successive Channel Switching |
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