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- W2109342600 abstract "In this paper we propose a new random channel access protocol to reduce the channel access delay in a multichannel orthogonal frequency division multiple access (OFDMA) wireless networks. In particular, we propose a two dimensional random walk through time and frequency domain slots simultaneously to reduce the random channel access delay for the IEEE 802.16e-2005 based WiMAX media access control (MAC) protocol. We prove through simulation that our proposed scheme improves upon the existing random channel access mechanism with truncated binary back-off, currently implemented in WiMAX. We demonstrated that with our proposed channel access mechanism, a mobile node with real time traffic requirements will have minimum service disruption due to the reduced delay in the initial ranging and the bandwidth request phase while changing rooms." @default.
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- W2109342600 date "2011-03-01" @default.
- W2109342600 modified "2023-09-22" @default.
- W2109342600 title "Improved random channel access for OFDMA wireless networks" @default.
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- W2109342600 doi "https://doi.org/10.1109/wcnc.2011.5779150" @default.
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