Patent ID: 8031670
Filing Date: 2011-10-04
Classification: H04L,H04W

Abstract:
1. A method performed by a network node for setting the size of a control region of a subframe based on a set of one or more physical downlink control channels (PDCCHs), comprising: (a) selecting a first control region size from a set of control region sizes and determining a subset of the PDCCHs from said set of PDCCHs that can be assigned to a control region having a size equal to the first control region size; (b) selecting a second control region size from the set of control region sizes and determining a subset of the PDCCHs from said set of PDCCHs that can be assigned to a control region having a size equal to the second control region size; (c) after performing step (b), choosing a control region size for the subframe, wherein the control region size is chosen based, at least in part, on information pertaining to the subset of PDCCHs that can be assigned to a control region having a size equal to the chosen control region size; and (d) setting the size of the control region of the subframe to the control region size chosen in step (c).