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Multi-resolution CSI feedback

  • US 10,447,368 B2
  • Filed: 05/15/2017
  • Issued: 10/15/2019
  • Est. Priority Date: 05/13/2016
  • Status: Active Grant
First Claim
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1. A method performed by a radio device for Channel State Information, CSI, feedback in a communication system comprising a Radio Access Network, RAN, node, the method comprising:

  • receiving, from the RAN node, information about a Channel State Information Reference Signal, CSI-RS, resource, a first CSI type and a second CSI type for feedback;

    receiving, from the RAN node, a CSI feedback request for CSI measurement and feedback of the first CSI type or the second CSI type;

    measuring CSI of the indicated type based on signals received in the CSI-RS resource; and

    sending, to the RAN node, a CSI report of the requested CSI type.

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