Patent · US Active

Method and apparatus for transmitting and receiving channel status information (CSI) for supporting 256QAM in wireless access system

US9432168B2 · kind B2 · utility

14Cited by
0References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 19, 2013
Grant dateAug 30, 2016
Priority date
Expiry dateAug 29, 2034

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L27/18
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

A method and apparatus for transmitting and receiving channel status information (CSI) for supporting 256 QAM in a wireless access system are disclosed. A method for transmitting a Channel Quality Indication (CQI) index for 256 QAM (Quadrature Amplitude Modulation) in a wireless access system includes: receiving, by a user equipment (UE), a message including a 256 QAM indicator indicating use of a 256 QAM scheme; performing channel measurement of a downlink channel through which downlink data is transmitted; and transmitting a CQI index in response to the channel measurement result to a base station (BS), wherein the UE simultaneously manages a first CQI feedback table for supporting a legacy modulation scheme and a second CQI feedback table for supporting the 256 QAM scheme.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.