| Conference |
| Type of Publication |
| Energy-Efficient Data Dissemination for Wireless Sensor
Networks |
| Title |
|
|
| Authors |
| Proc. of IEEE International Workshop on Sensor
Networks and Systems for Pervasive Computing
(PerSens'07), White Plains, NY, USA, March 2007 |
| Published in |
| In order to disseminate a large amount of
data through a sensor network, it is common to split the data
into small-sized chunk packets. If the data is additionally
encoded by a forward error correction (FEC) code, missed chunks
can be recovered. Fountain codes are a special kind of FEC codes
which have the property that the sender provides the data in a
virtually endless stream by combining original chunks at random.
No matter which chunks get lost, each receiver only needs any k
chunks from the stream. In broadcast scenarios, fountains have
the additional advantage that only little redundancy is required,
even if several receivers have missed different chunks. We will
show the benefit of Fountain codes in wireless sensor networks in
comparison to raw transmissions and other FEC codes. To support
the actual data dissemination, we propose two generic distributed
protocols: an acknowledgement-based and a request-based protocol.
The evaluation is carried out in a real testbed consisting of 20
sensor nodes. |
| Abstract |
|
Energy-Efficient Forwarding
Aggregation
Data Dissemination
Wireless Sensor Networks
|
| Keywords |
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