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The performance of traditional TCP congestion control protocol degrades when congestion and contention increase in ad hoc networks that use the IEEE 802.11 DCF. Many of the problems result from medium contention at the media access control (MAC) layer. In this paper, we present a new contention-based congestion control (CBCC) method according to a novel congestion information from MAC layer. This...
Multi-packet reception (MPR) has been recognized as a powerful capacity-enhancement technique for randomaccess wireless local area networks (WLANs). As is common with all random access protocols, the wireless channel is often under-utilized in MPR WLANs. In this paper, we propose a novel multi-round contention random-access protocol to address this problem. This work complements the existing randomaccess...
A joint consideration about automatic repeat request (ARQ) retransmission scheme and dynamic relay selection for wireless cooperative networks is proposed in this paper. Relays selected for retransmission in ARQ are different from round to round, so that good relays (with good channel condition on average) will be used only once. Each relay quantizes its source-relay channel state information (CSI)...
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