Title:
無線通信システム、無線通信装置及び無線通信方法、並びにコンピュータ・プログラム
Document Type and Number:
Japanese Patent JP4407126
Kind Code:
B2
Abstract:
An information transmission source forms a transmission packet at a predetermined time unit into which a preamble is inserted and transmits it. The information reception target returns an acknowledge (ACK) packet or a not acknowledge (NACK) packet into which a preamble is inserted. A hidden terminal recognizes that the transmission path is used for data retransmission from when the NACK is received to when the next ACK is received to avoid collisions. Further, when there is transmission data at the information transmission source specified by a beacon signal, it is recognized that the transmission path is used until the next ACK is received. For example, in an ultra wide band communication method, access control is executed while avoiding collisions of communications and a retransmission control is executed.
Inventors:
Shigeru Sugaya
Application Number:
JP2003003568A
Publication Date:
February 03, 2010
Filing Date:
January 09, 2003
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H04W74/08; H04L1/16; H04L12/28; H04L29/08; H04W84/12; H04W36/16; H04W74/00
Domestic Patent References:
| JP2001333080A | ||||
| JP2002198974A |
Attorney, Agent or Firm:
Masaaki Miyata
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office