Patent ID: 9197387
Filing Date: 2015-11-24
Classification: H04L

Abstract:
1. A method in a user equipment of receiving control information from a wireless network, the method comprising: receiving a subframe comprising a plurality of time-frequency resources, the time-frequency resources comprising at least two control channel candidates; determining a first control channel candidate in the subframe; determining at least one first antenna port associated with the first control channel candidate; decoding the first control channel candidate of the at least two control channel candidates based on the determined at least one first antenna port; determining a second control channel candidate in the subframe; determining at least one second antenna port associated with the second control channel candidate; decoding the second control channel candidate of the at least two control channel candidates based on the determined at least one second antenna port; and receiving control information in one of the two control channel candidates; wherein the at least one first antenna port used for decoding the first control channel candidate is distinct from the at least one second antenna port used for decoding the second control channel candidate, and wherein the at least one first antenna port and the at least one second antenna port are respectively determined for the first control channel candidate and the second control channel candidate as a hash function of a Resource Block (RB), or Control Channel Element (CCE) index of an RB, or a CCE contained in the candidate.