Distributed Symmetric Function Computation in Noisy Wireless Sensor Networks with Binary Data
We consider a wireless sensor network consisting of n sensors, each having a recorded bit, the sensor's measurement, which has been set to either "0â⬠or "1ââ¬. The network has a special node called the fusion center whose goal is to compute a symmetric function of these bits; i....
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| Vydáno v: | 2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks : 3-7 April, 2006 s. 1 - 9 |
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| Médium: | Konferenční příspěvek |
| Jazyk: | angličtina |
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IEEE
2006
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| ISBN: | 0780395492, 9780780395497 |
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| Abstract | We consider a wireless sensor network consisting of n sensors, each having a recorded bit, the sensor's measurement, which has been set to either "0â⬠or "1ââ¬. The network has a special node called the fusion center whose goal is to compute a symmetric function of these bits; i.e., a function that depends only on the number of sensors that have a "1.â⬠The sensors convey information to the fusion center in a multi-hop fashion to enable the function computation. The problem studied is to minimize the total transmission energy used by the network when computing this function, subject to the constraint that this computation is correct with high probability. We assume the wireless channels are binary symmetric channels with a probability of error p, and that each sensor uses r α units of energy to transmit each bit, where r is the transmission range of the sensor. The main result in this paper is an algorithm whose energy usage is Θ (n(loglogn)(√logn/n)α), and we also show that any algorithm satisfying the performance constraints must necessarily have energy usage Ω (n(√logn/n)α). Then, we consider the case where the sensor network observes N events, and each node records one bit per event, thus having N bits to convey. The fusion center now wants to compute N symmetric functions, one for each of the events. |
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| AbstractList | We consider a wireless sensor network consisting of n sensors, each having a recorded bit, the sensor's measurement, which has been set to either "0â⬠or "1ââ¬. The network has a special node called the fusion center whose goal is to compute a symmetric function of these bits; i.e., a function that depends only on the number of sensors that have a "1.â⬠The sensors convey information to the fusion center in a multi-hop fashion to enable the function computation. The problem studied is to minimize the total transmission energy used by the network when computing this function, subject to the constraint that this computation is correct with high probability. We assume the wireless channels are binary symmetric channels with a probability of error p, and that each sensor uses r α units of energy to transmit each bit, where r is the transmission range of the sensor. The main result in this paper is an algorithm whose energy usage is Θ (n(loglogn)(√logn/n)α), and we also show that any algorithm satisfying the performance constraints must necessarily have energy usage Ω (n(√logn/n)α). Then, we consider the case where the sensor network observes N events, and each node records one bit per event, thus having N bits to convey. The fusion center now wants to compute N symmetric functions, one for each of the events. |
| Author | Srikant, R. Dullerud, G.E. Lei Ying |
| Author_xml | – sequence: 1 surname: Lei Ying fullname: Lei Ying organization: University of Illinois at Urbana-Champaign, lying@uiuc.edu – sequence: 2 givenname: R. surname: Srikant fullname: Srikant, R. – sequence: 3 givenname: G.E. surname: Dullerud fullname: Dullerud, G.E. |
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| PublicationTitle | 2006 4th International Symposium on Modeling and Optimization in Mobile, Ad Hoc and Wireless Networks : 3-7 April, 2006 |
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| Snippet | We consider a wireless sensor network consisting of n sensors, each having a recorded bit, the sensor's measurement, which has been set to either "0â⬠or... |
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| SubjectTerms | Availability Computer networks Distributed computing Hardware Industrial engineering Intelligent networks Mechanical sensors Sensor fusion Spread spectrum communication Wireless sensor networks |
| Title | Distributed Symmetric Function Computation in Noisy Wireless Sensor Networks with Binary Data |
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