An energy saving scheduling scheme for OFDMA two-hop relay systems

Author

Huang, Yanan ; Fang, Xuming ; Lin, Shufang

Author_Institution

Key Lab. of Inf. Coding & Transm., Southwest Jiaotong Univ., Chengdu, China

fYear

2009

fDate

19-23 Oct. 2009

Firstpage

44

Lastpage

47

Abstract

Being a new feature of next generation of wireless networks, MMR (mobile multi-hop relay) is proposed for the purpose of coverage extension and throughput enhancement in IMT-Advanced, IEEE 802.16j/m. Besides, with the help of relay, the system energy consumption could be well saved. In this paper, an energy saving scheduling scheme is proposed for OFDMA based two-hop relay systems. The novel scheme adjusts the modulation and coding (MC) mode and allocates the transmitting power dynamically according to the resource usage. It can also guarantee the QoS of different services by setting the scheduling priority. The simulation results show that the novel scheduling scheme can not only save system energy but also achieve higher throughput.

Keywords

OFDM modulation; WiMax; frequency division multiple access; mobile radio; modulation coding; quality of service; radio networks; resource allocation; scheduling; IEEE 802.16j/m; IMT-Advanced; OFDMA two-hop relay system; QoS; energy saving scheduling scheme; mobile multihop relay; modulation and coding mode; resource allocation; system energy consumption; throughput enhancement; wireless networks; Directive antennas; Energy consumption; Next generation networking; Power system relaying; Relays; Resource management; Scheduling algorithm; Spread spectrum communication; Throughput; Wireless networks; OFDMA; QoS; energy saving; relay; scheduling;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Design and its Applications in Communications, 2009. IWSDA '09. Fourth International Workshop on

Conference_Location

Fukuoka

Print_ISBN

978-1-4244-4379-6

Electronic_ISBN

978-1-4244-4380-2

Type

conf

DOI

10.1109/IWSDA.2009.5346434

Filename

5346434