Title :
Extended-range Wireless Sensor Networks with enhanced IEEE 802.15.4 CSMA/CA
Author :
Lin, Chih-Kuang ; Kokkinos, Titos ; Mullany, Francis
Author_Institution :
Bell Labs. Ireland, Alcatel-Lucent Ireland Ltd., Dublin, Ireland
Abstract :
An extended-range Wireless Sensor Network (WSN) technology is presented in this paper. The proposed technology is based on a cross-layer optimization of the IEEE 802.15.4 standard. In the physical layer, the use of directive and adaptive phased arrays is proposed for the WSN gateways. Consequently, a neighbor-cooperative CSMA/CA algorithm is proposed to alleviate the hidden-terminal problem that is aggravated with the use of directive antennas on the one side of the communication links (asymmetric links). With the proposed technology, a 3-fold increase of the single-hop range is achieved and transmission efficiency of the MAC is improved with minimal impact on the overall throughput, protocol complexity, overhead efficiency, and scalability.
Keywords :
Zigbee; access protocols; carrier sense multiple access; cooperative communication; directive antennas; internetworking; wireless sensor networks; MAC; WSN gateways; adaptive phased arrays; communication links; cross-layer optimization; directive antennas; directive phased arrays; enhanced IEEE 802.15.4 CSMA-CA; extended-range WSN technology; extended-range wireless sensor network technology; hidden-terminal problem; neighbor-cooperative CSMA-CA algorithm; protocol complexity; Antennas; Clustering algorithms; Complexity theory; IEEE 802.15 Standards; Multiaccess communication; Scalability; Wireless sensor networks;
Conference_Titel :
Sensors, 2011 IEEE
Conference_Location :
Limerick
Print_ISBN :
978-1-4244-9290-9
DOI :
10.1109/ICSENS.2011.6127365
