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:
Jul. 10, 2012
Filed:
Mar. 02, 2010
Xiaoyong Yu, Grayslake, IL (US);
Xiaoyong Yu, Grayslake, IL (US);
Motorola Mobility, Inc., Libertyville, IL (US);
Abstract
An apparatus and method for synchronization in an uplink spatial division multiple access (UL SDMA) mode of a WiMAX wireless communication system includes a first step () of allocating a mixed sequence of first and second tile patterns for mobile station uplink slots. A next step () includes detecting embedded pilot signals in mobile station data traffic. A next step () includes calculating first and second pilot signal phase difference within the respective first and second tile patterns. A next step () includes estimating a time error and a frequency error of the pilot signals. A next step () includes sending information about the time and/or frequency error to the mobile station for use in synchronization ().