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:
Mar. 07, 1989
Filed:
Jun. 02, 1988
Hideaki Haruyama, Yokohama, JP;
Hiroshi Kobayashi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a communication network system, a central equipment unit transmits, over a down link, a frame signal carrying subframe information signals addressed to respective terminal equipment units, on a time-division multiplexing basis. The frame signal consists of a delay measurement window field carrying address information designating one of the terminal equipment units for delay measurement and a data field carrying the subframe information signals addressed to the terminal equipment units. When a terminal equipment unit is polled from the central equipment unit to measure the delay time, it transmits a response signal to the central equipment unit after a predetermined time interval from the reception timing of the frame signal, such that the response signal arrives at the central equipment unit within the delay measurement window field of the next frame signal. The central equipment unit measures a delay time between the transmission timing of the next frame signal and the reception timing of the response signal, and transmits transmission timing adjustment information based on the measured delay time, and address information of the terminal equipment unit, in an address field of the next frame signal. The terminal equipment unit transmits a subframe signal to the central equipment unit after a time interval, depending on the transmission timing adjustment information, from the reception timing of a frame signal.