Patent ID: 8711790
Filing Date: 2014-04-29
Classification: H04L,H04W

Abstract:
1. An apparatus, comprising: at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor and in response to execution of the computer program code, cause the apparatus to perform at least the following: receiving signaling indicating whether the apparatus is to access one or both of a first downlink control region in a downlink subframe and an enhanced downlink control region in the downlink subframe, wherein the downlink subframe has a downlink transmission bandwidth and a time duration; accessing in the first downlink control region a common downlink control channel message; in response to the received signaling indicating the apparatus is to access the first downlink control region, accessing in the first downlink control region a downlink control channel message corresponding to the apparatus and comprising quadruplets of contiguous subcarriers spread over a plurality of physical resource blocks spread over the whole downlink transmission bandwidth for the first downlink control region, each quadruplet occupying a portion but not all of a physical resource block, and depending on the downlink control channel message accessing or not accessing a portion specific to the apparatus of a first physical downlink shared channel in the downlink subframe; and in response to the received signaling indicating the apparatus is to access the enhanced downlink control region, accessing in the enhanced downlink control region a downlink control channel message corresponding to the apparatus and comprising a plurality of subcarriers occupying one or more physical resource blocks contiguous in one or both of time and frequency, and depending on the determined downlink control channel message, accessing or not accessing a portion specific to the apparatus of a second physical downlink shared channel in the downlink subframe.