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Träfflista för sökning "WFRF:(Varshney Ambuj) srt2:(2014)"

Sökning: WFRF:(Varshney Ambuj) > (2014)

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1.
  • Varshney, Ambuj, et al. (författare)
  • Directional Transmissions and Receptions for Burst Forwarding using Disjoint Paths
  • 2014
  • Ingår i: Proc. 13th International Symposium on Information Processing in Sensor Networks. - Piscataway, NJ : IEEE Press. - 9781479931460 ; , s. 307-308
  • Konferensbidrag (refereegranskat)abstract
    • Bulk data transmission is an important traffic pattern of many sensor network applications. These applications deliver large amounts of sensed data to a sink node for further processing. Most of the existing bulk data transmission protocols use a single flow of communication. This is inefficient as the radio at the source node is transmitting and the sink node is receiving packets for only half of the duration of the burst. We show in this paper that reduced contention because of directional communication enables us to construct node disjoint paths from the source to the sink node using only one wireless channel. This allows us to forward subsequent packets in the burst on the disjoint paths which maximises the radio transmit and receive time at the source and the sink node respectively. We demonstrate that this doubles the sink throughput as compared to a single flow of communication.
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2.
  • Varshney, Ambuj, et al. (författare)
  • Using Directional Transmissions and Receptions to Reduce Contention in Wireless Sensor Networks
  • 2014
  • Ingår i: Real-World Wireless Sensor Networks. - Cham : Springer International Publishing. - 9783319030715 - 9783319030708 ; , s. 205-213
  • Konferensbidrag (refereegranskat)abstract
    • Electronically Switched Directional (ESD) antennas allow software-based control of the direction of maximum antenna gain. ESD antennas are feasible for wireless sensor network. Existing studies with these antennas focus only on controllable directional transmissions. These studies demonstrate reduced contention and increased range of communication with no energy penalty. Unlike existing literature, in this chapter we experimentally explore controllable antenna directionality at both sender and receiver. One key outcome of our experiments is that directional transmissions and receptions together considerably reduce channel contention. As a result, we can significantly reduce intra-path interference.
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  • Resultat 1-2 av 2
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refereegranskat (2)
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Voigt, Thiemo (2)
Mottola, Luca (2)
Varshney, Ambuj (2)
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2014 (2)Ta bort avgränsningen

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