Patent ID: 9166745
Filing Date: 2015-10-20
Classification: H04L,H04W

Abstract:
1. A method implemented by a base station of assigning resources on a downlink control channel to a group of acknowledgement channels for sending acknowledgement signals to a group of scheduled mobile terminals transmitting on an uplink traffic channel, said method comprising: determining, by a scheduler of the base station, for each acknowledgement channel, a required transmit energy based on the channel conditions experienced by a corresponding mobile terminal assigned to the acknowledgement channel; assigning, by the scheduler, each acknowledgement channel to a channel group having at least one of a minimum number of channels and a minimum cumulative transmit energy, wherein: normalizing, by the scheduler, a total required transmit energy for all acknowledgement channels to a predetermined value when the total required transmit energy for all acknowledgement channels in all channel groups exceeds an available transmit power for the acknowledgement channels; and sending, by a retransmission controller of the base station, acknowledgment signals to the mobile terminals over the acknowledgement channels.