Title :
Opportunistic scheduling for OFDMA networks with mobile relay stations
Author :
Jee-Hun Song ; Hee-Tae Roh ; Jang-Won Lee
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
To improve the spectral efficiency and extend the coverage of next-generation cellular networks, several technologies are proposed, and one of such technologies is mobile relay stations (MRSs). In the system with MRSs, some of mobile stations (MSs) can act as relay stations (RSs) that forward other MSs data from/to the base station (BS). Compared with the fixed RSs, MRSs have several advantages such as low deployment costs and high flexibility. In this paper, we study an opportunistic subchannel scheduling in orthogonal frequency division multiple access (OFDMA) cellular networks with MRSs. We formulate a stochastic optimization problem to maximize the sum-rate of the system with MRSs while satisfying the minimum average data rate requirement for each MS, and then develop an optimal opportunistic subchannel scheduling algorithm by solving it. Through simulation results, we show the performances of our algorithm.
Keywords :
OFDM modulation; cellular radio; frequency division multiple access; next generation networks; optimisation; relay networks (telecommunication); telecommunication scheduling; MRS; OFDMA networks; base station; mobile relay stations; mobile stations; next generation cellular networks; optimal opportunistic subchannel scheduling; orthogonal frequency division multiple access networks; spectral efficiency; stochastic optimization problem; Bandwidth; Optimal scheduling; Relays; Resource management; Scheduling algorithms; Stochastic processes; Uplink; Mobile relay station (MRS); device-to-device (D2D) communication; opportunistic scheduling; orthogonal frequency division multiple access (OFDMA);
Conference_Titel :
Information and Communication Technology Convergence (ICTC), 2014 International Conference on
Conference_Location :
Busan
DOI :
10.1109/ICTC.2014.6983168