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:
Jun. 22, 1999
Filed:
Oct. 31, 1996
Rob Marchetto, Burnaby, CA;
Claudio Rey, Port Moody, CA;
Glenayre Electronics, Inc., Charlotte, NC (US);
Abstract
A system and method for maintaining communication between a paging base station (transceiver) and a mobile paging unit when signal reception is below a level that would otherwise be unacceptable. The system changes from one data transmission rate to another depending upon the quality of the communication channel. In particular, the symbol rate of the transmissions remains the same, but the number of modulation states and bits per symbol is decreased or increased depending upon the bit error rate of the received signal. In some arrangements, the transceiver transmits at the highest bit rate for that particular system. If no response is received from the paging unit or the paging unit sends a response signal back to the transceiver indicating the signal sent is unacceptable, the transceiver retransmits at a lower bit rate. In other arrangements, the receiver determines the highest data rate within the group of data rates available and transmits a signal representative of that data rate to the base station. In response to such a signal, the base station transmits at the requested data rate until a different data rate is requested.