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:
May. 05, 2020
Filed:
Jun. 14, 2016
Akram Bin Sediq, Kanata, CA;
Talha Ahmad, Kanata, CA;
Ahmed Nouah, Ottawa, CA;
Hua Xu, Ottawa, CA;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A transmission scheme for transmitting control data segments over a control channel using multi-layer or hierarchical modulation is disclosed. According to principles described herein, first and second control data segments are modulated to form multi-layer symbols configured such that the first control data segment is recoverable via demodulation at a lower order while a second control data segment is recoverable via demodulation at a higher order. In at least some embodiments, the scheme dynamically adapts this higher order to current channel conditions so as to maximize the control channel's spectral efficiency, while at the same time still allowing the system to statically fix the modulation order for the first control data segment, e.g., to maintain (blind) decoding complexity. By transmitting control data in segments using multi-layer modulation, spectral efficiency of the control channel may be improved.