Patent ID: 8923255
Filing Date: 2014-12-30
Classification: H04L,H04W

Abstract:
1. A method performed in a base station of a wireless communications network, the method comprising: identifying a first downlink control channel; tracking a physical downlink control channel (PDCCH) allocations of uplink control channel resources transmitted to User Equipment (UE), wherein the uplink control channel resources include a first allocated uplink control channel resource and a second allocated uplink control channel resource; based on tracking the PDCCH allocations, determining an acknowledgement/negative acknowledgement (ACK/NACK) resource collision will occur at the UE between the first allocated uplink control channel resource and the second uplink control channel resource; and assigning, to the UE, a second downlink control channel that replaces the first downlink control channel and avoids the ACK/NACK resource collision.