Patent ID: 9408209
Filing Date: 2016-08-02
CPC Classification: H04L,H04W

Claim Text:
1. A method of controlling packet data transmission, comprising: determining availability of a primary uplink frequency of a primary carrier and a secondary uplink frequency of a secondary carrier for uplink transmissions, wherein the secondary carrier is configured to transmit control packet data units and retransmission packet data units; determining whether a first radio condition of the primary uplink frequency meets a superior condition threshold and a second radio condition of the secondary uplink frequency meets an inferior condition threshold, based on at least one of acknowledgement messages or not acknowledged messages corresponding to each of the primary uplink frequency and the secondary uplink frequency; and upon determining that the first radio condition has met the superior condition threshold and the second radio condition has met the inferior condition threshold, transmitting all pending control packet data units and all pending retransmission packet data units on the primary uplink frequency, filling all transport blocks of the secondary uplink frequency with padding bits; and transmitting only transport blocks filled with the padding bits on the secondary uplink frequency to enhance retransmission of radio link control (RLC) packet data units.