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. 24, 2015
Filed:
Aug. 03, 2012
Ansuman Adhikary, Los Angeles, CA (US);
Haralabos Papadopoulos, San Jose, CA (US);
Ansuman Adhikary, Los Angeles, CA (US);
Haralabos Papadopoulos, San Jose, CA (US);
NTT DOCOMO, INC., Tokyo, JP;
Abstract
A method and apparatus is disclosed herein for scheduling and MU-MIMO transmission based on outdated channel state information. In one embodiment, the multi-user (MU)-MIMO wireless communication system has a multi-antenna transmitter and L user terminals, and the method comprises scheduling a pair of user packets for a round-2 transmission to form one MAT session using outdated channel state information at the transmitter (CSIT), including a first packet destined for a first user terminal and a second packet destined for a second user terminal, based on knowledge of user channels from transmissions to some or all L user terminals into and based on a utility function, combining eavesdropped observations from two of the plurality of round-1 transmissions, the eavesdropped observations including information indicative of round-1 eavesdropped channels feedback from the first and second user terminals, and transmitting the combined observations of the pair of user packets as part of the round-2 transmission.