| US 7,586,834 B2 | ||
| Method and apparatus for transmitting uplink acknowledgement information in an OFDMA communication system | ||
| Myung-Kwang Byun, Suwon-si (Korea, Republic of); Jae-Ho Jeon, Seongnam-si (Korea, Republic of); Seung-Joo Maeng, Seongnam-si (Korea, Republic of); Jeong-Heon Kim, Anyang-si (Korea, Republic of); Hee-Sang Seo, Seoul (Korea, Republic of); and Jeong-Tae Oh, Yongin-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd, (Korea, Republic of) | ||
| Filed on May 31, 2005, as Appl. No. 11/141,155. | ||
| Claims priority of application No. 10-2004-0039385 (KR), filed on May 31, 2004. | ||
| Prior Publication US 2005/0286402 A1, Dec. 29, 2005 | ||
| Int. Cl. H04J 11/00 (2006.01) | ||
| U.S. Cl. 370—208 | 16 Claims |
| 1. A method for transmitting uplink acknowledge (ACK) information in a communication system using an orthogonal frequency
division multiple access (OFDMA) scheme, the method comprising:
generating uplink ACK information to be transmitted in consideration of downlink packet status;
channel-encoding the uplink ACK information into a codeword;
determining modulation symbols corresponding to the codeword by performing orthogonal modulation; and
transmitting the modulation symbols allocated to predetermined subcarrier clusters,
wherein the modulation symbols are defined by an ACK vector index from:
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where the ACK bit indicates the uplink ACK information, each of the ACK vector indexes indicates a predetermined set of modulation
symbols, and each of the tiles includes a predetermined number of subcarriers.
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