Method And Apparatus For Linear Combination Codebook Design And CSI Feedback In Mobile Communications
First Claim
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1. A method, comprising:
- measuring, by a processor of a user equipment (UE), one or more reference signals from a network node of a wireless network;
selecting, by the processor, a set of one or more selected beams from a plurality of beams by;
determining, based on the measuring, at least one high-power beam among the plurality of beams as a chosen beam; and
searching in a spatial region around the chosen beam to identify one or more other beams each having a power no greater than that of the chosen beam, the chosen beam and the one or more other beams being the one or more selected beams;
generating, by the processor, a report indicating the one or more selected beams; and
transmitting, by the processor, the report to the network node.
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Abstract
Techniques and examples pertaining to linear combination codebook design and channel state information (CSI) feedback in mobile communications are described. Frequency-dependent parameterization is supported to reduce signaling overhead in reporting beam selection and to enhance CSI resolution. Additionally, the number of candidates for beam selection depends on the strength of each beam to be selected such that more candidates are considered for a stronger beam than for a weaker beam. Moreover, amplitude quantization and/or phase quantization for beams of different strengths are different to reduce quantization error.
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Citations
9 Claims
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1. A method, comprising:
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measuring, by a processor of a user equipment (UE), one or more reference signals from a network node of a wireless network; selecting, by the processor, a set of one or more selected beams from a plurality of beams by; determining, based on the measuring, at least one high-power beam among the plurality of beams as a chosen beam; and searching in a spatial region around the chosen beam to identify one or more other beams each having a power no greater than that of the chosen beam, the chosen beam and the one or more other beams being the one or more selected beams; generating, by the processor, a report indicating the one or more selected beams; and transmitting, by the processor, the report to the network node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification