USER EQUIPMENT COMPRISING A TRANSCEIVER CAPABLE OF REMOVING SELF-INTERFERENCE AND METHOD THEREFOR

摘要

With increasing user requirements for social networking services (SNS), communication between user equipments (UEs) at a physically close distance, i.e., device to device (D2D) communication, is needed. D2D communication is performed on the basis of the discovery between UEs. However, D2D communication between UEs may cause interference to communication with an existing system, i.e., a base station. Thus, one aspect of the present invention provides a user equipment comprising a transceiver capable of removing self-interference.

主权项

1. A user equipment (UE) comprising:
a first radio frequency (RF) chain configured to process a first reception signal and a second reception signal; a second RF chain configured to process a transmission signal; a duplexer to output the first reception signal to the first RF chain and to output the second reception signal to the second RF chain; a directional coupler connected between the duplexer and the second RF chain to output the transmission signal from the second RF chin to the duplexer and to output the second reception signal input from the duplexer to the first RF chain; a self-interference removing filter to remove the transmission signal from the second RF chain leaking into the second reception signal input from the directional coupler to output a signal; and an accumulator connected to the self-interference removing filter and the first RF chain to accumulate the second reception signal output from the self-interference removing filter and the first reception signal and to input an accumulated signal to the first RF chain.