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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.:

US 9647868 B1

PDFFull Text
Date of Patent:
May. 09, 2017

Filed:

Jan. 10, 2013

Handling signals

Applicant:

Nokia Technologies Oy, Espoo, FI;

Inventors:

Xianjun Jiao, Beijing, CN;

Xin Zhang, Beijing, CN;

Canfeng Chen, Beijing, CN;

Assignee:

Nokia Technologies Oy, Espoo, FI;

Attorney:

Locke Lord LLP

Primary Examiner:

Tuan H Nguyen

Int. Cl.
CPC ...
H04L 27/38 (2006.01); H04B 7/0404 (2017.01); H04W 4/00 (2009.01); H04B 7/06 (2006.01); G01S 5/00 (2006.01); G01S 1/04 (2006.01); G01S 1/08 (2006.01); H01Q 3/24 (2006.01); H03D 1/22 (2006.01); H03D 7/16 (2006.01); H04B 1/30 (2006.01); H04L 27/34 (2006.01); H04L 27/36 (2006.01); H04B 17/12 (2015.01); H04B 17/15 (2015.01); H04B 17/16 (2015.01); H01Q 1/24 (2006.01); H01Q 25/00 (2006.01); H04B 7/10 (2017.01); G01S 5/04 (2006.01); H04W 4/02 (2009.01); H04W 4/04 (2009.01);
U.S. Cl.
CPC ...
H04L 27/389 (2013.01); G01S 1/042 (2013.01); G01S 1/08 (2013.01); G01S 5/0009 (2013.01); H01Q 1/246 (2013.01); H01Q 3/24 (2013.01); H01Q 25/001 (2013.01); H03D 1/22 (2013.01); H03D 7/166 (2013.01); H04B 1/30 (2013.01); H04B 7/0404 (2013.01); H04B 7/0604 (2013.01); H04B 7/0691 (2013.01); H04B 17/12 (2015.01); H04B 17/15 (2015.01); H04B 17/16 (2015.01); H04L 27/34 (2013.01); H04L 27/36 (2013.01); H04W 4/008 (2013.01); G01S 5/04 (2013.01); H04B 7/10 (2013.01); H04W 4/025 (2013.01); H04W 4/026 (2013.01); H04W 4/043 (2013.01);
Abstract

Apparatus comprises a memory configured to store a matrix of transmit data; a multi-element antenna; and a transmitter configured to transmit a signal from a multi-element antenna as part of a packet within a transmit period in a switching interval by: switching between different elements of the multi-element antenna in a sequence of transmit intervals within the transmit period; and deriving the signal for transmission in different transmit intervals from different ones of the transmit data in the matrix. Also, apparatus comprises a receiver configured to receive plural packets; and an accumulator configured, for each packet, to accumulate signals received in a switching interval of the packet. The apparatus is configured to: derive a correlation metric for each of the packets from the accumulated signals for the packets; identify a packet with the best correlation metric; identify a direction associated with the packet identified as having the best correlation metric; and provide the direction as an output.

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