Title:
【発明の名称】ディジタル無線通信方式
Document Type and Number:
Japanese Patent JP2672506
Kind Code:
B2
Abstract:
PURPOSE:To prevent the deteriorating of a transmission characteristic by adding a multipass detecting code to a re-sending request signal to transmit only when a transmission error occurs. CONSTITUTION:A transmitting side sends a packet, the packet arrives at a receiving station unerroneously, then, a receiving side returns an ACK. When the error exists, an NAK (re-sending request) with a multipass inspecting code is returned and the bass station re-sends the reversely corrected packet. The multipass inspecting code may be a code with a high self-orthogonality and an M series, a Gold series, an E series, etc., can be used. Especially, by preserving equally the frequency of the antenna and up-down link of a slave station for a master station, the multipass structure of the up-down link is made completely equal then, the action of the reverse correction becomes further larger. Thus, the transmission error is reduced and a transmission efficiency is improved.
Inventors:
Mutsumi Serizawa
Application Number:
JP8407687A
Publication Date:
November 05, 1997
Filing Date:
April 06, 1987
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04B7/005; H04B7/26; H04L1/16; H04L1/08; (IPC1-7): H04B7/26; H04B7/005; H04L1/08; H04L1/16
Domestic Patent References:
| JP5895446A |
Other References:
桑原守二監修 「自動車電話」 第２版，ＰＰ．１４−１６，昭和６０年８月１日 社団法人電子情報通信学会
Attorney, Agent or Firm:
Togawa Hideaki