Patent ID: 9307419
Filing Date: 2016-04-05
CPC Classification: H04L,H04W

Claim Text:
1. A method of operating a wireless access node to wirelessly transmit user data to a wireless communication device, the method comprising: separating the user data into a first Hybrid Automatic Repeat Request (HARQ) packet and a second HARQ packet; wirelessly transmitting the first HARQ packet with a preamble at a first modulation rate during a first HARQ time slot in a first HARQ frame; if a Negative Acknowledgement (NACK) is received from the wireless communication device for the first HARQ packet, then wirelessly retransmitting the first HARQ packet having the preamble at a second modulation rate that is lower than the first modulation rate during a first HARQ time slot in a second HARQ frame and not wirelessly retransmitting the first HARQ packet during the first HARQ frame; and if an Acknowledgement (ACK) is received from the wireless communication device for the first HARQ packet, then wirelessly transmitting the second HARQ packet without any preamble during the first HARQ time slot in the second HARQ frame and not wirelessly retransmitting the second HARQ packet during the second HARQ frame.