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. 11, 2015
Filed:
Aug. 12, 2011
Shiwei Gao, Nepean, CA;
Hua Xu, Ottawa, CA;
Shiguang Guo, Kanata, CA;
Dongsheng Yu, Nepean, CA;
Yongkang Jia, Ottawa, CA;
Masoud Ebrahimi Tazeh Mahalleh, Ottawa, CA;
Tarik Tabet, Kanata, CA;
Youn Hyoung Heo, Suwon, KR;
Zhijun Cai, Euless, TX (US);
Shiwei Gao, Nepean, CA;
Hua Xu, Ottawa, CA;
Shiguang Guo, Kanata, CA;
Dongsheng Yu, Nepean, CA;
Yongkang Jia, Ottawa, CA;
Masoud Ebrahimi Tazeh Mahalleh, Ottawa, CA;
Tarik Tabet, Kanata, CA;
Youn Hyoung Heo, Suwon, KR;
Zhijun Cai, Euless, TX (US);
BlackBerry Limited, Waterloo, Ontario, CA;
Abstract
A method and system for access and uplink power control for a wireless system having multiple transmit points. In one aspect a method operating in a wireless network having a plurality of transmission points (TP) including a macro evolved Node B (eNB) and at least one low power node (LPN) having transmit power lower than that of the macro eNB, the method detecting, by the user equipment, a transmission point having a lowest path loss to the user equipment; and transmitting, by the user equipment, a physical random access channel (PRACH) preamble on a PRACH directed to the transmission points having the lowest path losses.