iMAC : improved medium access control for multi-channel multi-hop wireless networks
Trends in wireless networks are increasingly pointing towards a future with multi-hop networks deployed in multi-channel environments. In this thesis, we present the design for iMAC—a protocol targeted at medium access control in such environments. iMAC uses control packets on a common control chann...
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| Language: | en_US |
| Published: |
2010
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| Online Access: | http://hdl.handle.net/1957/18086 |
| Summary: | Trends in wireless networks are increasingly pointing towards a future with multi-hop
networks deployed in multi-channel environments. In this thesis, we present the design
for iMAC—a protocol targeted at medium access control in such environments. iMAC
uses control packets on a common control channel to faciliate a three-way handshake
between the sender and receiver for every packet transmission. This handshake enables
the sender and receiver to come to consensus on a channel to use for data transmission
and also signals to neighboring nodes about the contention on that channel. iMAC then
uses a mechanism similar to 802.11 for data communication. Our evaluation of iMAC
shows that it provides significant gains in throughput in comparison with uninformed
channel selection, especially when contention for channel bandwidth is neither too low
nor too high; intelligent selection of channels by iMAC is necessary to harness
available bandwidth resources in the presence of medium levels of contention. === Graduation date: 2011 |
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