Systems and methods for UE-specific search space and ePDCCH scrambling

摘要

Encoded control information can be mapped to an enhanced physical downlink control channel (ePDCCH) search space of a user equipment (UE) in accordance with an offset and aggregation level. The ePDCCH search space may include a physical resource block (PRB) set located in a data region of a downlink subframe. The encoded control information may be mapped into one or more enhanced control channel elements (eCCEs) of the ePDCCH search space beginning from a starting location. The starting location is an eCCE location within the PRB set. The PRB set, as well as the starting/eCCE location within the PRB set, are identified in accordance with an offset associated with the UE. A number of eCCEs carrying encoded information corresponds to an aggregation level.

主权项

1. A method of communicating an enhanced physical downlink control channel (ePDCCH), the method comprising:
determining an offset associated with a user equipment (UE); determining, in accordance with the offset, an enhanced control channel element (eCCE) location in a physical resource block (PRB) set, the PRB set being included in an ePDCCH search space of the UE; mapping encoded control information to one or more eCCEs of the ePDCCH search space, the one or more eCCEs starting from the eCCE location in the PRB set, wherein the encoded control information indicates uplink or downlink resources allocated to the UE; and transmitting, by a communications controller, a subframe carrying the ePDCCH to the UE.