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:
Feb. 21, 2012
Filed:
Mar. 25, 2008
Hanqing Lou, Garland, TX (US);
Ahmadreza Hedayat, Allen, TX (US);
Genyuan Wang, Plano, TX (US);
Hang Jin, Plano, TX (US);
Hanqing Lou, Garland, TX (US);
Ahmadreza Hedayat, Allen, TX (US);
Genyuan Wang, Plano, TX (US);
Hang Jin, Plano, TX (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
An adaptive transmission selection technique is provided. A retransmission scheme is selected for a multiple-input-multiple-output wireless system. A plurality of communication techniques is provided for when a first device needs to retransmit a signal to a second device. The first device determines when the original signal, transmitted to the second device using beamforming techniques, needs to be retransmitted to the second device. If a retransmission is needed, the first device determines channel conditions with respect to the second device. The first device selects a retransmission scheme from a plurality of transmission schemes based on the channel conditions for retransmitting the signal. A first retransmission technique is selected when the channel conditions are static. A second retransmission technique is selected when the channel conditions are relatively slowly changing, and a third retransmission technique is selected when the channel conditions are relatively quickly changing.