METHODS FOR NEW DATA INDICATOR (NDI) FIELD ALIGNMENT FOR RELIABLE RECEPTION OF MULTICAST TRAFFIC

Abstract

Systems, methods, apparatuses, and computer program products for sending a dummy or blank DCI to a UE in order to align the current value of the NDI field for the HPID intended to be used for the upcoming multicast transmission. One method may include selecting, by a NE, a smaller group of UE with the same NDI value from among two groups of UE of a group size smaller than a configured threshold value; transmitting, by the NE, DCI to the group of UE; and transmitting, by the NE, at least one of initial PTP transmissions and subsequent PTP or PTM retransmissions with the NDI value toggled from the DCI.

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