Enhanced CCA scheme for slotted CSMA/CA in IEEE 802.15.4 LR-WPANs

Saeyoung Ahn, Seon Wook Kim, Sun-Shin An

Research output: Contribution to journalArticle

Abstract

Recently, IEEE 802.15.4 has been standardized forWSNs (Wireless Sensor Networks). This paper proposes an enhanced CCA scheme which involves the data transmission device sending a notifyBusy-Channel (nBC) signal in the backoff period when the Channel Using Quotient (CUQ) exceeds 0.5. The CUQ stands for the rate of channel utilization in the previous slot duration. In a single CCA operation the device nodes are made aware of the busy status of the channel by the nBC signal. We implement the ECCA scheme in a hardware chip for a performance evaluation. The results show that the proposed scheme has short queuing times and less energy consumption than IEEE 802.15.4 CCA. And the scheme is compatible with conventional IEEE 802.15.4 devices.

Original languageEnglish
Pages (from-to)1072-1075
Number of pages4
JournalIEICE Transactions on Communications
VolumeE94-B
Issue number4
DOIs
Publication statusPublished - 2011 Apr 1

Fingerprint

Carrier sense multiple access
Data communication systems
Wireless sensor networks
Energy utilization
Hardware

Keywords

  • 802.15.4
  • Beacon-enabled mode
  • CC2420
  • CCA
  • CSMA/CA
  • Energy efficiency
  • Frame acknowledgement
  • LR-WPAN

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Software

Cite this

Enhanced CCA scheme for slotted CSMA/CA in IEEE 802.15.4 LR-WPANs. / Ahn, Saeyoung; Kim, Seon Wook; An, Sun-Shin.

In: IEICE Transactions on Communications, Vol. E94-B, No. 4, 01.04.2011, p. 1072-1075.

Research output: Contribution to journalArticle

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