Patent ID: 9258801
Filing Date: 2016-02-09
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for transmitting downlink control information in a radio communication system, the method comprising: transmitting a first control message to a first user equipment (UE) in a first subframe and using a first Physical Resource Block (PRB) pair, wherein said first control message is divided among two or more first non-overlapping subsets of resource elements, at least one of which is in the first PRB pair, wherein the two or more first non-overlapping subsets of resource elements are aggregated in a frequency-localized manner within at least the first PRB pair, and wherein symbols in the two or more first non-overlapping subsets of resource elements are transmitted using a single antenna port; and transmitting a second control message to a second UE, also in the first subframe and also using the first PRB pair, wherein said second control message is divided among two or more second non-overlapping subsets of resource elements, at least one of which is in the first PRB pair, wherein the two or more second non-overlapping subsets of resource elements are aggregated in a frequency-distributed manner across the first PRB pair and one or more additional PRB pairs, and wherein symbols in at least two of the two or more second non-overlapping subsets of resource elements are transmitted using differing antenna ports, said differing antenna ports including the single antenna port used to transmit the symbols in the two or more first non-overlapping subsets of resource elements.