METHOD AND A SYSTEM FOR CSI REPORTING IN LTE NETWORKS ACCORDING TO THE MOBILITY OF THE USER EQUIPMENT
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Jul 2, 2015
app pub date -
May 13, 2013
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May 18, 2012
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Abstract
A method and a system for channel state information (CSI) reporting in LTE networks according to the mobility of user equipment. The method includes user equipment (UE) transmitting to an LTE cellular base station (eNodeB), a CSI report containing quality information including CQI, PMI and RI indicators on an uplink radio channel in a periodic manner using a physical uplink shared channel (PUSCH), the CSI reporting activated based on a low mobility estimation of the UE and including a first CSI report type containing CSI information in DWT form of the channel impulse responses and average CQI indications for the codewords in use, being some of the DWT coefficients admissible to be discarded for increased compression; and a second CSI report type containing differences in coefficients of the DWT for each channel impulse responses, and differences in the average of CQI values. The system is adapted to implement the method.
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