| Publisher | Indian Institute of Technology Bombay | ||
|---|---|---|---|
| Format | 678.9KB PDF | Date added | 07 Jul 2006 |
| Topics | Wi-Fi (802.11), Mobile - Wireless Communications | ||
| Downloads | 62 | ||
The IEEE 802.11 Distributed Coordination Function (DCF) MAC protocol continues to suffer from the hidden and exposed node problems which characterize CSMA-based protocols. The RTS/CTS exchange partially solves the hidden node problem, but the exposed node problem remains unaddressed. This paper describes enhancements to the IEEE 802.11 DCF MAC Protocol which enable nodes to identify themselves as exposed nodes and to opportunistically schedule concurrent transmissions whenever possible, thereby improving utilization and mitigating the exposed node problem. The algorithm makes minimal changes to the IEEE 802.11 MAC protocol.
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