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The Politecast Communication Primitive for Low-Power Wireless
RISE, Swedish ICT, SICS. Computer Systems Laboratory.
RISE, Swedish ICT, SICS. Computer Systems Laboratory.
Number of Authors: 2
2011 (English)In: Computer communication review, ISSN 0146-4833, E-ISSN 1943-5819, Vol. 41, 32-37 p.Article in journal (Refereed) Published
Abstract [en]

In low-power wireless networks, nodes need to duty cycle their radio transceivers to achieve a long system lifetime. Counter-intuitively, in such networks broadcast becomes expensive in terms of energy and bandwidth since all neighbors must be woken up to receive broadcast messages. We argue that there is a class of traffic for which broadcast is overkill: periodic redundant transmissions of semi-static information that is already known to all neighbors, such as neighbor and router advertisements. Our experiments show that such traffic can account for as much as 20% of the network power consumption. We argue that this calls for a new communication primitive and present politecast, a communication primitive that allows messages to be sent without explicitly waking neighbors up. We have built two systems based on politecast: a low-power wireless mobile toy and a full-scale low-power wireless network deployment in an art gallery and our experimental results show that politecast can provide up to a four-fold lifetime improvement over broadcast.

Place, publisher, year, edition, pages
ACM , 2011, 10. Vol. 41, 32-37 p.
National Category
Computer and Information Science
Identifiers
URN: urn:nbn:se:ri:diva-23846OAI: oai:DiVA.org:ri-23846DiVA: diva2:1042924
Projects
ContikiPromossupple
Available from: 2016-10-31 Created: 2016-10-31Bibliographically approved

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