Patent ID: 8295211
Filing Date: 2012-10-23
Classification: H04L

Abstract:
1. A method for transmitting/receiving data in an orthogonal frequency division multiple access-time division duplex (OFDMA-TDD) scheme, the method comprising the steps of: (a) periodically transmitting a first uplink signal and receiving a first downlink signal of a specific band within a repeating time-divided section of the OFDMA-TDD scheme by a transmission/reception front-end unit; and (b) periodically transmitting a second uplink signal and receiving a second downlink signal of a band, other than said specific band in step (a), within the repeating time-divided section of the OFDMA-TDD scheme by said transmission/reception front-end unit, wherein, the second uplink signal of said band other than said specific band is received by a transmission/reception front-end unit during a same particular time section in which the first downlink signal is transmitted; dividing an uplink signal and a downlink signal from each other, which are simultaneously transmitted/received, by a duplexer positioned between the band processing unit and the antenna based on a frequency division duplexing scheme; respectively connecting a first protocol and a second protocol to the duplexer via one of a first bandpass filter and a second bandpass filter by a 2×2 switch; arranging a high power amplifier (HPA) coupled to a first node of the 2×2 switch for amplifying downlink signals from the first protocol and the different protocol; arranging a low noise amplifier (LNA) coupled to a second node of the 2×2 switch for amplifying uplink signals from the first protocol and the second protocol; wherein a multi-protocol baseband processing unit controlling transmission/reception timing of signals for transmitting and receiving the first uplink signal and first downlink signal, and for transmitting and receiving the second uplink signal and the second downlink signal; and wherein a protocol of transmission/reception of both the specific band and the band other than the specific band are different from each other, and the multi-protocol baseband processing unit process signals of both bands and both protocols.