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:
Aug. 08, 2017
Filed:
Dec. 02, 2016
Institute for Information Industry, Taipei, TW;
Kun-Hung Lee, Taipei, TW;
Institute For Information Industry, Taipei, TW;
Abstract
A wireless device and a random access method thereof for a mobile communication system are provided. The mobile communication system defines a plurality of preambles. The wireless device receives a system message carrying a random access success rate from a base station, and divides the preambles into N preamble subsets according to the random access success rate. The N preamble subsets have a strict partial order relationship therebetween. The union of the N preamble subsets consists of the preambles. When requesting random access from the base station, the wireless device randomly selects a preamble from the smallest preamble subset. When a preamble collision occurs, the wireless device reselects a preamble from the larger preamble subset gradually for the random access.