Cross Layer based Congestion Control in Wireless Networks

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In this paper, the authors discuss a cross layer congestion control technique of TCP Reno-2 in wireless networks. In this both TCP layer and PHY layer jointly control congestion. The PHY layer changes transmission power as per the channel condition, interference received and congestion in the network, whereas the TCP layer controls congestion using Reno-2 window based flow control. The simulations show that the cross layer congestion control technique provides performance improvement in terms of throughput and window size variations.