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SENSYS
2004
ACM

Mitigating congestion in wireless sensor networks

8 years 9 months ago
Mitigating congestion in wireless sensor networks
Network congestion occurs when offered traffic load exceeds available capacity at any point in a network. In wireless sensor networks, congestion causes overall channel quality to degrade and loss rates to rise, leads to buffer drops and increased delays (as in wired networks), and tends to be grossly unfair toward nodes whose data has to traverse a larger number of radio hops. Congestion control in wired networks is usually done using end-to-end and network-layer mechanisms acting in concert. However, this approach does not solve the problem in wireless networks because concurrent radio transmissions on different “links” interact with and affect each other, and because radio channel quality shows high variability over multiple time-scales. We examine three techniques that span different layers of the traditional protocol stack: hop-by-hop flow control, rate limiting source traffic when transit traffic is present, and a prioritized medium access control (MAC) protocol. We im...
Bret Hull, Kyle Jamieson, Hari Balakrishnan
Added 30 Jun 2010
Updated 30 Jun 2010
Type Conference
Year 2004
Where SENSYS
Authors Bret Hull, Kyle Jamieson, Hari Balakrishnan
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