Patent ID: 9407403
Filing Date: 2016-08-02
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting downlink data in a wireless communication system, the method comprising: generating a downlink subframe comprising a first control channel for a first cell having a first frequency band and a second control channel for a second cell having a second frequency band, wherein the first control channel is a physical downlink control channel (PDCCH) and the second control channel is an enhanced PDCCH (ePDCCH), wherein the first control channel is assigned within a control region of both the first and second frequency hands, and the second control channel is assigned within a data region of the second frequency band, wherein the second cell is not permitted to use one or more resource elements (REs) assigned to the first control channel, wherein an index of the starting orthogonal frequency division multiplexing (OFDM) symbol of the second control channel is indicated by at least one of a primary synchronization signal/secondary synchronization signal (PSS/SSS) sequence, a physical broadcast channel/master information block (PBCH/MIB), and a default value, wherein the index of the starting OFDM symbol is configured via a radio resource control (RRC) signaling, and wherein a size of the first frequency band is 20 MHz and a size of the second frequency band is 1.4 MHz; and transmitting downlink data through the downlink subframe.