Title :
Automatic rate adaptation and energy-saving mechanisms based on cross-layer information for packet-switched data networks
Author :
Alonso, Luis ; Agusti, Ramon
Author_Institution :
Univ. Politecnica de Catalunya, Barcelona, Spain
fDate :
3/1/2004 12:00:00 AM
Abstract :
A set of novel PHY-MAC mechanisms based on a cross layer dialogue have been proposed, and their performance has been analyzed. System efficiency improvement is achieved by means of automatic transmission rate adaptation, trading off bit rate for power, with resulting energy saving features in a generic packet-switched CDMA access network. The rate adaptation mechanism improves spectrum efficiency while keeping packet delay minimized. On the other hand, power dependent strategies reduce power consumption and intercell interference. Simulation results show that the benefits obtained are very encouraging, so the proposed schemes could be used in future communication systems.
Keywords :
4G mobile communication; cellular radio; code division multiple access; packet radio networks; packet switching; 4G mobile communications; CDMA access network; PHY-MAC mechanisms; automatic transmission rate adaptation; cellular radio system; code division multiple access; cross layer dialogue; cross-layer information; energy-saving mechanisms; intercell interference; medium access control; packet delay; packet-switched data networks; physical layer level; power efficiency; spectrum efficiency; Access protocols; Base stations; Batteries; Broadcasting; Data communication; Downlink; Media Access Protocol; Multiaccess communication; Radio communication; Telecommunication traffic;
Journal_Title :
Communications Magazine, IEEE
DOI :
10.1109/MCOM.2004.1273769
