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- W2740201805 abstract "In this paper, a novel p-persistent based Orthogonal Frequency Division Multiple Access (OFDMA) transmission scheme in the next generation Wireless Local Area Network (WLAN) is proposed. In order to enhance the throughput performance, OFDMA is adopted for both uplink and downlink transmission. Since Access Point (AP) cannot pre-schedule all potential uplink users, random access based OFDMA is also adopted. In the random access based OFDMA, AP allocates random amount of uplink resource for uplink random access since AP does not know how many Stations (STAs) would transmit how large packets. Depending on the number of STAs attempting random access, allocated random access resource can be wasted. If the number of STAs attempting random access is small, allocated random access resource would be under-utilized. If the number of STAs attempting random access is large, allocated random access resource would not be used for actual packet transmission because of packet collision. In this paper, in order to alleviate of random access congestion, a novel p-persistent based random access scheme is proposed. In the proposed scheme, depending on the possible number of STAs attempting random access, access probability is set in order to regulate number of attempting users. Also, the proposed scheme considers priority between access classes. Depending on the access class, differentiated access probabilities are assigned to provide differentiated priorities. By using the proposed scheme, next generation WLAN is able to provide a very efficient random access based OFDMA transmission scheme." @default.
- W2740201805 created "2017-08-08" @default.
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- W2740201805 date "2016-01-01" @default.
- W2740201805 modified "2023-09-24" @default.
- W2740201805 title "P-persistent Based OFDMA Uplink Transmission in the Next Generation Wireless LAN" @default.
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- W2740201805 hasPublicationYear "2016" @default.
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