Registered Method of hybrid burst mapping in OFDMA systems

Inventors

Sunghyun Hwang, Um Jung Sun, Gwangzeen Ko, Song Myung Sun, Kim Chang-Joo

Application No.

12665861 (2008.06.11)

Publication No.

20100202401 (2010.08.12)

Registration No.

8693410 (2014.04.08)

Country

UNITED STATES

Project Code

07MR2100, Study on Cognitive Radio Standardization, Sunghyun Hwang

Abstract

Provided are a method of adaptively allocating appropriate hybrid bursts according to terminal attributes including terminal position, channel state, and service type in an orthogonal frequency-division multiple access (OFDMA) system, and an upstream-MAP information element (US-MAP IE) structure supporting the method. The method includes dividing an upstream subframe into a plurality of zones depending on the number of OFDMA symbols and allocating bursts of a zone to a terminal according to the terminal attributes. Bursts are formed by allocating slots along a time axis in the upstream subframe, and are formed by allocating slots along a frequency axis in a downstream subframe.

KSP Keywords

Burst Mapping, Channel state, Information Element, Map Information, OFDMA systems, Orthogonal frequency-division multiple access (ofdma), Service Type, frequency-division multiple access(FDMA), multiple access, orthogonal frequency-division multiple access(OFDMA)