An Enhanced CSMA-CA Algorithm for IEEE 802.15.4 LR-WPANs

Author

Ha, Jae Yeol ; Kim, Tae Hyun ; Park, Hong Seong ; Choi, Sunghyun ; Kwon, Wook Hyun

Author_Institution

Control Inf. Syst. Lab., Seoul Nat. Univ.

Volume

11

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

461

Lastpage

463

Abstract

Two mechanisms are proposed to enhance throughput and energy efficiency of IEEE 802.15.4 CSMA-CA. The first one is an enhanced collision resolution (ECR) mechanism that adjusts the backoff exponent (BE) based on both consecutive clear channel assessment (CCA) busy results and a packet transmission. The second one is an enhanced backoff (EB) mechanism that shifts the range of backoff counters by utilizing the CCA outcome. The simulation results demonstrate that the proposed mechanisms significantly enhance both throughput and energy efficiency of IEEE 802.15.4

Keywords

carrier sense multiple access; personal area networks; telecommunication congestion control; wireless channels; CCA; CSMA-CA algorithm; ECR mechanism; IEEE 802.15.4 LR-WPAN; carrier sense multiple access; clear channel assessment; collision avoidance; enhanced backoff mechanism; enhanced collision resolution; wireless personal area network; Counting circuits; Electronic mail; Energy consumption; Energy efficiency; Energy resolution; Helium; Laboratories; Media Access Protocol; Robustness; Throughput;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2007.061891

Filename

4202107