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:
May. 03, 2016
Filed:
Apr. 26, 2012
Shahrokh Nayeb Nazar, Quebec, CA;
Robert L. Olesen, Huntington, NY (US);
Manasa Raghavan, West Babylon, NY (US);
Muhammad U. Fazili, Audubon, PA (US);
William E. Lawton, Parker Ford, PA (US);
Yingxue K. LI, Exton, PA (US);
Shahrokh Nayeb Nazar, Quebec, CA;
Robert L. Olesen, Huntington, NY (US);
Manasa Raghavan, West Babylon, NY (US);
Muhammad U. Fazili, Audubon, PA (US);
William E. Lawton, Parker Ford, PA (US);
Yingxue K. Li, Exton, PA (US);
InterDigital Patent Holdings, Inc., Wilmington, DE (US);
Abstract
Methods and apparatus for multiple-input multiple-output (MIMO) transmissions are disclosed. A base station may precode wireless transmit/receive unit (WTRU)-specific reference signals and data that are transmitted to a WTRU using a randomly selected precoder. The precoder may be selected based on a predefined precoder selection sequence or by the base station. A different precoder may be applied to different resource blocks (RBs). In addition, a large delay cyclic delay diversity (CDD) or discrete Fourier transform (DFT) spreading may be applied on the WTRU-specific reference signals and the data. For heterogeneous deployed antennas, spatial diversity gain is achieved by dynamically scheduling resources between transmission points. A hopping scheme may be applied across the transmission points as the resources are dynamically partitioned between the transmission points. A different randomly selected precoder may be applied to each RB transmitted from a different transmission point.