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:
Nov. 20, 2018
Filed:
Feb. 22, 2016
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Zhengwei Liu, San Diego, CA (US);
Xiaoxia Zhang, San Diego, CA (US);
Wanshi Chen, San Diego, CA (US);
Siddhartha Mallik, San Diego, CA (US);
Aleksandar Damnjanovic, Del Mar, CA (US);
Onkar Jayant Dabeer, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 16/14 (2009.01); H04W 74/08 (2009.01); H04W 84/04 (2009.01);
U.S. Cl.
CPC ...
H04W 74/0825 (2013.01); H04W 16/14 (2013.01); H04W 74/0833 (2013.01); H04W 74/0808 (2013.01); H04W 84/042 (2013.01);
Abstract
Additional improvements to the design of enhanced physical random access channel (ePRACH) procedures are disclosed for communications systems having contention-based shared spectrum including unlicensed frequency bands. The additional improvements address the uncertainty of transmission in listen before talk (LBT)-based communications and cooperation with other radio access technologies competing for the same frequency spectrum.