| Publisher | University of Victoria | ||
|---|---|---|---|
| Format | 545.0KB PDF | Date added | 29 Dec 2005 |
| Topics | TCP - IP, Mobile - Wireless Communications | ||
| Downloads | 54 | ||
It is well known that Transmission Control Protocol (TCP) performance degrades severely in IEEE 802.11-based wireless ad hoc networks. The paper first identifies two critical issues leading to the TCP performance degradation: unreliable broadcast, since broadcast frames are transmitted without the request-to-send and clear-to-send (RTS/CTS) dialog and Data/ACK handshake, so they are vulnerable to the hidden terminal problem; and false link failure which occurs when a node cannot successfully transmit data temporarily due to medium contention. The paper then proposes a scheme to use a narrow-bandwidth, out-of-band busy tone channel to make reservation for broadcast and link error detection frames only.
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