An enhanced CSMA-CA algorithm for IEEE 802.15.4 LR-WPANs

被引：49

作者：

Ha, Jae Yeol ^{[1
]}

Kim, Tae Hyun

Park, Hong Seong

Choi, Sunghyun

Kwon, Wook Hyun

机构：

[1] Seoul Natl Univ, Control Informat Syst Lab, Seoul, South Korea

[2] Univ Texas, Wireless Networking & Commun Grp, Austin, TX 78712 USA

[3] Seoul Natl Univ, Multimedia & Wireless Networking Lab, Seoul, South Korea

来源：

IEEE COMMUNICATIONS LETTERS | 2007年 / 11卷 / 05期

关键词：

IEEE; 802.15.4; LR-WPAN; CSMA-CA;

D O I：

10.1109/LCOMM.2007.061891

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

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.

引用

页码：461 / 463

页数：3