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Wireless multi-hop access networks based on IEEE 802.11 technology are an increasingly popular option to provide cost-efficient last-mile Internet access. In multi-hop wireless networks, where wireless stations are densely deployed and packets are relayed over multiple hops towards the destination, wireless links often experience large variations in link qualities caused by the interference from transmissions in the same network. Consequently, local error control techniques as defined in the 802.11 specification are used aggressively to reduce or recover from packet losses.
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