The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1999
Filed:
Feb. 05, 1997
Masanori Taketsugu, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A transmission control system for performing one-to-multiple site data transmission by a radio packet communication, comprising a plurality of communication terminals and a communication base station for determining timing of access control as well as timing of sending and receiving transmission data, the communication terminals and the communication base station being connected via a radio packet communication system, in which the communication terminal sends a negative acknowledgment signal on the failure in receiving a packet signal sent from the communication base station, the communication base station resends the packet signal which is not received by the communication terminal upon receipt of the negative acknowledgment signal, and the communication terminal sending the packet signal resends the packet signal which was sent just before, upon receipt of the packet signal resent from the communication base station.