Adaptive enhanced physical downlink control channel (EPDDCH) for LTE-advanced systems

Abstract

Recently, 3rd generation partnership project (3GPP) proposes a new control channel framework known as enhanced physical downlink control channel (EPDCCH) as adjunct to existing physical downlink control (PDCCH). The challenge of scarce resources in PDCCH is almost out of question for EPDCCH. However, the methods of achieving efficient resource utilization are still relevant and important. We have outline new scheme for mapping out the EDPCCH from physical downlink shared channel (PDSCH) with less signaling overhead and also outline new algorithm for distributing its resources among UEs search spaces. Our proposed scheme is design for different scenarios and thus classified as adaptive. Through simulation we have proved that the UEs' blocking probability can be lessen and EPDCCH resource utilization can be improved.