| Publisher | KTH - Royal Institute of Technology | ||
|---|---|---|---|
| Format | 112.6KB PDF | Date added | 01 Jan 2007 |
| Topics | TCP - IP, Mobile - Wireless Communications | ||
| Downloads | 9 | ||
Heterogeneous communication networks with their variety of application demands, uncertain time-varying traffic load, and mixture of wired and wireless links pose several challenging problem in modeling and control. This paper focuses on the packet delay, which is a particularly important variable for efficient end-to-end congestion control. In particular, the paper studies the delay effects of radio links which use power control and link-layer retransmissions. Link-layer retransmissions induce delays which do not conform to the assumptions on which the transport protocol is based. This causes undesired TCP control actions which reduce throughput. A link layer solution based on adding carefully selected delays to certain packets is proposed to counteract this problem. All information needed for this is available locally at the link.
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