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:
Aug. 16, 2011
Filed:
Jan. 10, 2007
Jun Tan, Lake Zurich, IL (US);
Amitava Ghosh, Buffalo Grove, IL (US);
Rapeepat Ratasuk, Hoffman Estates, IL (US);
Fan Wang, Chicago, IL (US);
Weimin Xiao, Barrington, IL (US);
Jun Tan, Lake Zurich, IL (US);
Amitava Ghosh, Buffalo Grove, IL (US);
Rapeepat Ratasuk, Hoffman Estates, IL (US);
Fan Wang, Chicago, IL (US);
Weimin Xiao, Barrington, IL (US);
Motorola Mobility, Inc., Libertyville, IL (US);
Abstract
A system and method for initializing a system communication without previous reservations for random access channel (RACH) access includes a first step of defining at least one spread sequence derived from at least one constant amplitude zero autocorrelation sequence. A next step includes combining the spread sequence with a Walsh code to form an extended spread sequence. A next step includes using the extended spread sequence in a preamble for a RACH. A next step includes sending the preamble to a BTS for acquisition. A next step includes monitoring for a positive acquisition indicator from the BTS. A next step includes scheduling the sending of a RACH message. A next step includes sending the RACH message.