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Active Queue Management for Fair Resource Allocation in Wireless Networks

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3 Author(s)
Andrew, L.L.H. ; California Inst. of Technol., Pasadena ; Hanly, S.V. ; Mukhtar, R.G.

This paper investigates the interaction between end-to-end flow control and medium access control (MAC)-layer scheduling on wireless links. We consider a wireless network with multiple users receiving information from a common access point; each user suffers fading and a scheduler allocates the channel based on channel quality but is subject to fairness and latency considerations. We show that the fairness property of the scheduler is compromised by the transport-layer flow control of transmission control protocol (TCP) New Reno. We provide a receiver-side control algorithm, CLAMP, that remedies this situation. CLAMP works at a receiver to control a TCP sender by setting the TCP receiver's advertised window limit, and this allows the scheduler to allocate bandwidth fairly between the users.

Published in:

Mobile Computing, IEEE Transactions on  (Volume:7 ,  Issue: 2 )