Title :
Homeplug-AV CSMA/CA Cross-Layer Extension for QoS Improvement of Multimedia Services
Author :
Pinero-Escuer, Pedro Jose ; Malgosa-Sanahuja, J. ; Manzanares-Lopez, P. ; Munoz-Gea, J.P.
Author_Institution :
Atmel Corp., Zaragoza, Spain
Abstract :
This letter proposes a cross-layer extension of the CSMA/CA protocol used in the Power-line Communications standard HomePlug-AV. Its main goal is to allocate more bandwidth to nodes with QoS needs by giving them more channel access opportunities. An easy way to do this is by appropriately modifying the contention window size of the participants. The presented protocol considers both the QoS requirements of the upper-layer services and the physical layer restrictions. It is mathematically modeled and evaluated by means of a realistic simulator in an in-home scenario, showing that it significantly improves the system performance compared to the standard version of the protocol and to any other previously presented extension.
Keywords :
bandwidth allocation; carrier sense multiple access; carrier transmission on power lines; channel allocation; mathematical analysis; multimedia communication; quality of service; CSMA-CA protocol; QoS improvement; bandwidth allocation; channel access opportunity; contention window size; cross-layer extension; mathematical modeling; multimedia service; physical layer restriction; power-line communication standard HomePlug-AV; upper-layer service; Jitter; Multiaccess communication; Protocols; Quality of service; Radiation detectors; Standards; Transform coding; CSMA/CA; Powerline communications; QoS; cross-layer;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.021814.132556
