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AssigneeNtt Docomo, Inc.
InventorsNadisanka Rupasinghe, Yuki Matsumura, Satoshi Nagata
Estimating the term…
A wireless communication method for a terminal, a terminal, and a wireless communication system receive one or more Channel State Information Reference Signals (CSI-RSs). Further, quantization of combination coefficients of the one or more CSI-RSs corresponding to one or more spatial beams Discrete Fourier Transform (DFT) basis vector amplitudes is performed.
A terminal comprising:
A radio communication method for a terminal, comprising:
A system comprising a terminal and a base station, wherein
Dependencies are inferred from the claim text.
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Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting: taking channel rank into account
Feedback content: channel coefficients, e.g. channel state information [CSI]
Feedback content: antenna weights or vector/matrix coefficients
Feedback format: differential feedback
About 14 years of term left · ends 27 Oct 2040 (estimated)
One or more embodiments disclosed herein relate to a method for quantization of combination coefficients associated with frequency domain compression.
New Radio (NR; fifth generation (5G) radio access technology) supports Type II Channel State Indicator (CSI) feedback. Fraction of overhead allocations for sub-band (SB) reporting in NR Rel. 15 Type II CSI scheme can be calculated as follows:
For Rank 1, the fraction of overhead for L=2, K=4 is 120/142%≈85%;
FIG. 1 is a diagram showing a configuration of a wireless communication system according to one or more embodiments of the present invention.
FIG. 2 is a diagram showing a table that defines a set of values according to one or more embodiments of a first example of the present invention.
FIG. 3 is a diagram showing a table that defines a set of values according to one or more embodiments of a second example of the present invention.
Embodiments of the present invention will be described in detail below, with reference to the drawings. In embodiments of the invention, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to one of ordinary skill in the art that the invention may be practiced without these specific details. In other instances, well-known features have not been described in detail to avoid obscuring the invention. Additionally, one skilled in the art will appreciate that various terminology may be used interchangeably such as, for example, determines and assumes.
A wireless communication system 1 according to one or more embodiments of the present invention will be described below with reference to FIG. 1.
As shown in FIG. 1, the wireless communication system 1 includes a UE 10, a BS 20, and a core network 30. The wireless communication system 1 may be an NR system or a Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system.