Dual mode communications device and method of improving data rate thereof

Abstract

There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.

1 - 7 . (canceled) 
     
     
         8 . A method of improving a data rate performed in a dual mode communications device, comprising:
 scanning neighboring base stations;   determining whether dual band communications are possible, based on signals from the scanned neighboring base stations;   performing the dual band communications in the dual mode, simultaneously using the predetermined two communications bands when it is determined that the dual band communications is possible; and   performing single band communications in a single mode using the predetermined single communications band when it is determined that the dual band communications are not possible.   
     
     
         9 . The method of  claim 8 , wherein the determining is performed to determine whether the dual band communications are possible, based on the quality of service status included in the RF receive signal. 
     
     
         10 . The method of  claim 8 , wherein in the performing of the dual band communications, the data packets respectively corresponding to the high-band and low-band baseband signals from the RF circuit unit at the time of reception are merged with each other so as to recover data, the data packets to be transmitted are divided into the high-band and low-band data packets, and the baseband signals including the divided data packets are provided to the RF circuit unit. 
     
     
         11 . The method of  claim 10 , wherein the performing of the dual band communications allows pairing information to be included in each of the high-band baseband signal and the low-band baseband signal at the time of dividing the baseband signals and uses paired signals included in each of the high-band baseband signal and the low-band baseband signal at the time of merging the baseband signals. 
     
     
         12 . The method of  claim 8 , wherein in the performing of dual band communications, the single band communications are performed by the dual band communications being switched to a single mode when the data capacity to be transmitted is lower than a predetermined data capacity.