US 11,923,975 B2
Device and method for compressing and/or decompressing channel state information
Vladimir Alexandrovich Lyashev, Moscow (RU); Luis Alberto Suarez Rivera, Moscow (RU); Nikita Andreevich Ryabov, Moscow (RU); and Alexander Ivanovich Sherstobitov, Moscow (RU)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jul. 5, 2022, as Appl. No. 17/857,820.
Application 17/857,820 is a continuation of application No. 16/833,269, filed on Mar. 27, 2020, granted, now 11,424,853.
Application 16/833,269 is a continuation of application No. PCT/RU2017/000718, filed on Sep. 28, 2017.
Prior Publication US 2023/0041413 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/00 (2006.01); H04B 7/0417 (2017.01); H04B 7/06 (2006.01); H04L 27/26 (2006.01)
CPC H04L 1/0029 (2013.01) [H04B 7/0417 (2013.01); H04B 7/0626 (2013.01); H04L 27/2636 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A computation device for compressing channel state information (CSI), the CSI representing a channel transfer function H having a spatial dimension (n) and a frequency dimension (f), the computation device comprising a processor configured to:
perform a spatial transformation and a frequency-to-time transformation on the channel transfer function H to obtain a transformed channel transfer function HT; and
compress the transformed channel transfer function HT to generate compressed channel state information (CCSI), wherein the compressing comprises:
selecting, from the transformed channel transfer function HT, a predetermined number L of values hτ,k of the transformed channel transfer function HT having the greatest amplitudes or all values hτ,k of the transformed channel transfer function HT exceeding a predetermined amplitude, wherein k represents spatial components and τ represents time taps, and
generating a channel state report based on the selected values of the transformed channel transfer function HT.