Interference of bluetooth and IEEE 802.11: simulation modeling and performance evaluation
MSWIM '01 Proceedings of the 4th ACM international workshop on Modeling, analysis and simulation of wireless and mobile systems
A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
MSWIM '01 Proceedings of the 4th ACM international workshop on Modeling, analysis and simulation of wireless and mobile systems
Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Interference evaluation of Bluetooth and IEEE 802.11b systems
Wireless Networks
IEEE 802.11 rate adaptation: a practical approach
MSWiM '04 Proceedings of the 7th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Explicit transport error notification (ETEN) for error-prone wireless and satellite networks
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: Networking for the earth science
The Impact of Multihop Wireless Channel on TCP Performance
IEEE Transactions on Mobile Computing
TCP with adaptive pacing for multihop wireless networks
Proceedings of the 6th ACM international symposium on Mobile ad hoc networking and computing
LT-TCP: end-to-end framework to improve TCP performance over networks with lossy channels
IWQoS'05 Proceedings of the 13th international conference on Quality of Service
Simulation analysis of bi-directional traffic characterization over wireless ad hoc networks
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
A novel demand-aware fairness metric for IEEE 802.11 wireless networks
Proceedings of the 28th Annual ACM Symposium on Applied Computing
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As broadband wireless channels become common, the performance of TCP over end-to-end paths containing such links is important. TCP SACK suffers substantially when residual packet error rates increase beyond a value of about 1%--5%(especially for longer RTTs). Recently we have proposed improvements to TCP (called LT-TCP) to make TCP loss-tolerant in heavy and bursty erasure environments. However, real world wireless systems do not just present bursty randomloss patterns to the transport layer. The PHY, MAC and transport layers all respond to errors, interacting in myriad ways. In this paper, we focus on one underlying source of packet erasure (non-congestion loss), namely interference in 802.11 environments (from Bluetooth and co-channel interferers), and the resulting interaction between the MAC and transport layer mechanisms. MAC layer mechanisms cannot fully mitigate the interference problem and tend to misinterpret interference as noise and aggressively respond with techniques like rateadaptation. Such aggressive responses lead to poor scheduling performance at the MAC layer (e.g., well-known unfairness and capture effects) and limit mitigation opportunities at the transport layer. We argue that aggressive rate adaptation is undesirable in these situations and show how a combination of reconfiguration of MAC layer mitigation options and increased buffering leads to significantly improved end-to-end performance.