An efficient negative acknowledgment method for CDMA-based ranging in IEEE 802.16 OFDMA systems

Author

Lee, Namsuk ; Choi, Yongseouk ; Lee, Sookjin ; Kim, Nam

Author_Institution

Electron. & Telecommun. Res. Inst. (ETRI), Daejeon, South Korea

Volume

14

Issue

1

fYear

2010

fDate

1/1/2010 12:00:00 AM

Firstpage

15

Lastpage

17

Abstract

Ranging in IEEE 802.16 systems is used to synchronize an uplink or to request an uplink bandwidth. The base station sends a ranging response message as a positive acknowledgment of a successfully received code. However, the base station does not provide a negative acknowledgment; hence, a mobile station is unable to determine if its ranging code is unsuccessfully transmitted. This paper proposes a negative acknowledgment method based on a ranging slot indicator and the frame number of a ranging response message. The results of the performance analysis show that the proposed method can reduce the delay of a code retransmission.

Keywords

broadband networks; code division multiple access; frequency division multiplexing; radio access networks; CDMA-based ranging; IEEE 802.16 OFDMA systems; negative acknowledgment method; ranging response message; ranging slot indicator; Bandwidth; Base stations; Broadcasting; Delay; Frequency conversion; Frequency synchronization; Multiaccess communication; Performance analysis; WiMAX; Wireless networks; IEEE 802.16; Ranging; WiMax; uplink bandwidth request;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2010.01.091818

Filename

5370259