Patent ID: 9474061
Filing Date: 2016-10-18
CPC Classification: H04L,H04W

Claim Text:
1. A method for exchanging control information in a communication system, comprising: receiving downlink control information on an Enhanced Physical Downlink Control Channel (EPDCCH) comprising at least one Enhanced Control Channel Elements (ECCE); identifying a first resource for uplink control information based on the first ECCE of the at least one ECCE, a resource offset configured for the EPDCCH, and ACK/NACK resource offset on the EPDCCH, if the EPDCCH is distributed transmission; identifying a second resource for uplink control information based on the first ECCE of the at least one ECCE, a resource offset configured for the EPDCCH, ACK/NACK resource offset on the EPDCCH and C-RNTI, if the EPDCCH is localized transmission; and transmitting the uplink control information on the first resource or the second resource ac cording to whether the EPDCCH is distributed transmission or localized transmission.