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, 2000
Filed:
Feb. 11, 1998
Satoshi Yoshida, Nice, FR;
Laurent Winckel, Antibes, FR;
Patrick Feyfant, Roulon, FR;
Denis Archambaud, Antibes, FR;
Oliver Weigelt, Antibes, FR;
Phillipe Gaglione, Mandelieu, FR;
Varenka Martin, Antibes, FR;
VLSI Technology, Inc., San Jose, CA (US);
Abstract
A method and system that enables a portable station within the personal handy phone system (PHS) to utilize the preamble field of the communication interface to contain extended common access channel field information while optimizing power consumption. The present invention can operate within a cell station of the PHS. The present invention empowers a portable station to identify the type of data contained within the preamble field. A predetermined number of data bits are extracted from the beginning of the preamble field of an incoming data frame received by a portable station. The present invention determines if the extracted data bits are identical to a predetermined data bit pattern. If the extracted data bits are identical to the data bit pattern, the portable station is directed to treat the data contained within the preamble field as the standardized preamble of the PHS by not storing it within memory and not performing a cyclic redundancy check (CRC) on it. If the data bits are not identical to the data bit pattern, the portable station treats the data contained within the preamble field as extended common access channel data by storing it within memory and performing a CRC on it. By enabling a portable station to identify the data within the preamble field, data storage and CRC are not performed on preamble data resulting in conservation of portable station power. Optimizing power consumption within a portable station is critical because it operates under limited battery power.