Title :
Relay technologies for WiMax and LTE-advanced mobile systems
Author :
Yang, Yang ; Hu, Honglin ; Xu, Jing ; Mao, Guoqiang
Author_Institution :
Chinese Acad. of Sci., Univ. Coll. London, London, UK
fDate :
10/1/2009 12:00:00 AM
Abstract :
Relay technologies have been actively studied and considered in the standardization process of next-generation mobile broadband communication systems such as 3GPP LTE-Advanced, IEEE 802.16j, and IEEE 802.16m. This article first introduces and compares different relay types in LTE-Advanced and WiMAX standards. Simulation results show that relay technologies can effectively improve service coverage and system throughput. Three relay transmission schemes are then summarized and evaluated in terms of transmission efficiency under different radio channel conditions. Finally, a centralized pairing scheme and a distributed pairing scheme are developed for effective relay selection. Simulation results show that the proposed schemes can maximize the number of served UE units and the overall throughput of a cell in a realistic multiple-RS-multiple-UE scenario.
Keywords :
WiMax; mobile radio; telecommunication standards; 3GPP LTE-Advanced; IEEE 802.16j; IEEE 802.16m; LTE-Advanced standards; LTE-advanced mobile systems; WiMAX standards; centralized pairing scheme; distributed pairing scheme; effective relay selection; next-generation mobile broadband communication systems; radio channel conditions; realistic multiple-RS-multiple-UE scenario; relay technologies; relay transmission schemes; served UE units; service coverage; standardization process; system throughput; Cellular networks; Collaboration; Communication system control; Decoding; Power system relaying; Relays; Standards development; Throughput; WiMAX; Wireless networks;
Journal_Title :
Communications Magazine, IEEE
DOI :
10.1109/MCOM.2009.5273815
