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. 17, 2001
Filed:
Jul. 24, 1996
Nguyen Quan Tat, Surrey, GB;
Nokia Mobile Phones Limited, Salo, FI;
Abstract
A method and apparatus for a handset are provided to select a channel for monitoring a system operating under a cellular radio telephone protocol supported by repetitive cellular radio systems. A base station transmits a signal packet having time slots and fields, which are recognizable by the handset. There is a selection of a carrier of a channel to scan in order to detect the packet. Upon finding a specified data field in the packet, there is a checking of a primary access right identity (PARI). Thereafter, the system may be found in order for the handset to lock onto the system, and, in the event that the system is not found, the procedure continues with a second pass which begins with a recording of received signal strength and secondary access right identity (SARI) information. In the second pass, there is again a selection of a carrier for scanning, this being obtained by use of information of the first pass. The scanning terminates in the event that there is a detection of the desired signal but continues in the event of a failure to determine compatibility between the handset and the system.