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The wireless carrier sense multiple access with collision detection (WCSMA/CD) and carrier sensemultiple access with collision resolution (CSMA/CR) protocols are considered representative distributed collision detection protocols for fully connected dense wireless local area networks. These protocols identify collisions through additional short-sensing within a collision detection (CD) period after...
Wireless sensor networks operating in 2.4 GHz ISM band are seriously affected by interference from coexisting radio systems such as IEEE 802.11× wireless local area networks. In this paper, we investigate the transmission performance of wireless sensor networks in the presence of co-channel interference. We first analyze the probability of transmission failure and data throughput associated with transmission...
This paper focuses on AP buffer effect upon TCP fairness over WLAN, and proposes an estimation algorithm of AP buffer size for TCP fairness over WLAN based on average window size. The key contribution of our algorithm is that it uses the relation of average drop rate to average both window size and used window size, and employs the limited condition of average window size for TCP fairness. Accuracy...
This paper focuses on TCP fairness over WLAN and proposes a new active queue management (TFBR) to solve the TCP unfairness between TCP upstream flows and downstream flows. The proposed TFBR modifies the drop tail, and controls the sender rate by setting the advertised receiver window of the packets in queue of the access point (AP) before executing drop tail program. The key point of the scheme is...
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