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. 06, 2012
Filed:
Oct. 23, 2009
Aimin Zhang, Shanghai, CN;
Zhiqun Chen, Shanghai, CN;
Yanshan Shi, Shanghai, CN;
Spreadtrum Communications (Shanghai) Co. Ltd., Shanghai, CN;
Abstract
A method for assigning signature sequences for E-HICH channel which may avoid the unbalanced situation brought about by the codeword assignment is provided, wherein the use of User Equipment (UE) signature sequences on Enhanced Dedicated Channel Hybrid Automatic Repeat Request Acknowledgement Indicator Channel (E-HICH) is equalized, so as to drive the average detection performance toward equity for different UEs to detect their respective signature sequences on E-HICH channel, and to reduce the average false detection rate for the respective UE on the feedback information transmitted thereto. The method includes: firstly, assigning a E-HICH logical signature sequence index r for each UE; then, converting the logical signature sequence index r into a physical signature sequence index r' varying with time by using a random permutation function; and after that, assigning a signature sequence corresponding to the physical signature sequence index r′ to the respective UE.