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.

Date of Patent:
Apr. 02, 2019

Filed:

Feb. 26, 2016
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Johan Axnäs, Solna, SE;

Robert Baldemair, Solna, SE;

Igor Moaco Guerreiro, Fortaleza, BR;

Dennis Hui, Sunnyvale, CA (US);

Eleftherios Karipidis, Stockholm, SE;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 56/00 (2009.01); H04W 72/04 (2009.01); H04W 72/08 (2009.01); H04B 1/7083 (2011.01); H04B 7/0491 (2017.01); H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04J 11/00 (2006.01); H04L 1/00 (2006.01); H04W 48/00 (2009.01);
U.S. Cl.
CPC ...
H04W 56/001 (2013.01); H04B 1/7083 (2013.01); H04B 7/0491 (2013.01); H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04B 7/0632 (2013.01); H04B 7/0695 (2013.01); H04B 7/088 (2013.01); H04J 11/0073 (2013.01); H04J 11/0076 (2013.01); H04L 1/0026 (2013.01); H04W 48/00 (2013.01); H04W 72/046 (2013.01); H04W 72/085 (2013.01);
Abstract

In one aspect of the teachings herein, a radio network node advantageously adapts the transmission duration of a synchronization signal with respect to transmission of the synchronization signal in different directions. For example, the radio network node uses a shorter transmission duration in beam directions that are associated with better reception conditions and a longer transmission duration in beam directions that are associated with poorer reception conditions. As a consequence of varying the transmission duration according to received-signal qualities known or expected for the different directions, the radio network node can shorten the overall time needed to complete one synchronization-signal transmission cycle and use less energy, as compared to using a more conservative, longer transmission time in all beam directions.


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