Patent ID: 9119101
Filing Date: 2015-08-25
Classification: H04L,H04W

Abstract:
1. For use in a wireless communication network, a subscriber station configured to report channel characteristics of at least two component carriers to at least one base station, the subscriber station comprising: a transceiver configured to transmit channel state information (CSI) feedback reports; and a controller configured to perform periodic CSI reporting regarding the at least two component carriers on at least two individually configured physical uplink control channels (PUCCH), wherein, in case of a collision between a first report type on a first PUCCH and a second report type for a second PUCCH in a same subframe, the controller is configured to determine each of the two report types to be one of a number of priority classes, the number of priority classes comprising: a first priority class comprising a rank indicator (RI) related report type and a wideband (WB) Precoding Matrix Indicator (PMI) report type; a second priority class comprising at least one WB channel quality indicator (CQI) related report type; and a third priority class comprising at least one subband (SB) related report type, and where the controller is configured to apply a priority rule to assign a priority to each one of the priority classes such that the controller causes the transceiver to transmit the report type included in a higher priority class and drop the report type included in a lower priority class, wherein when the first report type and the second report type are assigned a same priority class, the controller is configured to cause the transceiver to transmit a report corresponding to a lowest component carrier identifier and drop the other report type.