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:
Jul. 11, 2017
Filed:
Feb. 10, 2012
Kari Pekka Pajukoski, Oulu, FI;
Kari Juhani Hooli, Oulu, FI;
Esa Tapani Tiirola, Kempele, FI;
Pasi Eino Tapio Kinnunen, Oulu, FI;
Mauri Johannes Nissila, Oulu, FI;
Kari Pekka Pajukoski, Oulu, FI;
Kari Juhani Hooli, Oulu, FI;
Esa Tapani Tiirola, Kempele, FI;
Pasi Eino Tapio Kinnunen, Oulu, FI;
Mauri Johannes Nissila, Oulu, FI;
Nokia Solutions and Networks Oy, Espoo, FI;
Abstract
A method for reference signal transmission is disclosed, wherein a demodulation reference signal DMRS and a sounding reference signal SRS is transmitted in a same time domain resource from a user terminal to an LTE base station. A single reference signal sequence is used both for demodulation and detection of a data channel, and for channel sounding, such that a reference signal sequence part used for the demodulation and detection of the data channel is in a power offset compared to a reference signal sequence part used for the channel sounding. Code division multiplexing is applied on a reference signal sequence by using a cyclic shift of a whole length of the sequence. The cyclic shift is selected such that reference signal sequences allocated to the different user terminals are orthogonal over a minimum allocation granularity of the data channel.