METHOD AND APPARATUS FOR CONTROL CHANNEL DECODING IN MULTI-NODE SYSTEM

摘要

Provided are a method and an apparatus for control channel decoding of a terminal in a multi-node system. The method sets a search space for searching a control channel and can perform the decoding by using different demodulation methods according to aggregation levels capable of constituting the control channel within the search space. In addition, the method determines the DCI format to be searched according to a transmission mode and can use different demodulation methods according to the determined DCI format. Furthermore, the method modulates DCI format to a first modulation degree when demodulating the DCI format, and can demodulate the DCI format to a second modulation degree when the DCI format is not detected.

主权项

1. A method of decoding a control channel of a user equipment (UE) in a multi-node system, the method comprising:
configuring a search space for searching for a control channel, the search space being included within a data region from among a control region including initial N (N is an integer which is one of 0 to 4) orthogonal frequency division multiplexing (OFDM) symbols and a data region including remaining OFDM symbols in a subframe including a plurality of OFDM symbols; attempting decoding using a first aggregation level, from among aggregation levels which can form the control channel within the search space, as a unit; and attempting decoding using a second aggregation level, from among the aggregation levels within the search space, as a unit, wherein when the decoding using the first aggregation level as the unit is attemped, a first demodulation scheme is used, and when the decoding using the second aggregation level as the unit is attempted, a second demodulation scheme is used.