Title :
A new CDMA-based bandwidth request method for IEEE 802.16 OFDMA/TDD systems
Author :
Lee, Namsuk ; Choi, Yongseouk ; Lee, Sookjin ; Kim, Nam
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
fDate :
2/1/2010 12:00:00 AM
Abstract :
This paper proposes an efficient bandwidth request method for a non-real-time polling service and best effort service in the IEEE 802.16 system. The proposed method produces a bandwidth request code to indicate the channel quality and the necessary number of slots. The base station allocates uplink bandwidth depending on the bandwidth request code. Thus, the proposed method can omit the transmission procedure of the bandwidth request message. The performance analysis results show that the proposed method can reduce the delay for the uplink data transmission.
Keywords :
OFDM modulation; WiMax; bandwidth allocation; code division multiple access; telecommunication services; time division multiplexing; wireless channels; CDMA-based bandwidth request method; IEEE 802.16 OFDMA/TDD systems; bandwidth request code; base station; best effort service; channel quality; nonreal-time polling service; transmission procedure; uplink bandwidth allocation; uplink data transmission; Bandwidth; Base stations; Broadcasting; Channel allocation; Data communication; Degradation; Delay; Multiaccess communication; Performance analysis; Research and development; Uplink bandwidth request, uplink scheduling, IEEE 802.16;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.02.091681
