Title:
無線通信システムにおけるメッセージ送信方法および装置
Document Type and Number:
Japanese Patent JP2005505955
Kind Code:
A
Abstract:
Techniques to reduce transmit power required for transmission of messages from an access terminal to reduce interference to transmissions from other access terminals. In one aspect, messages to be transmitted are defined and/or coded such that they may be detected at different received signal qualities. The codewords may be defined having different distances to their nearest codewords. In another aspect, messages to be transmitted are assigned to different points in a signal constellation, with the points being located such that they may be received at different signal qualities. Codewords that may be received at a lower signal quality may be assigned to messages more likely to be transmitted at higher transmit power levels (e.g., when the access terminal is located further away) or to more frequently transmitted messages.
Inventors:
Pankai, Rajesh
Lund Dubai, Stain
Yahoo, Byron
Lund Dubai, Stain
Yahoo, Byron
Application Number:
JP2002592303A
Publication Date:
February 24, 2005
Filing Date:
February 06, 2002
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04B1/00; H04B1/7103; H04L1/00; H04B7/26; H04B7/005; H04W52/00; H04W52/54; (IPC1-7): H04B7/26; H04B1/707; H04L1/00
Attorney, Agent or Firm:
Takehiko Suzue
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto