Patent ID: 8139589

Claim:
A gateway apparatus comprising: a signal processing unit transmitting and receiving data to and from a core network and including a serial peripheral interface (SPI); a plurality of wireless transmit/receive units transmitting and receiving data to and from a sensor network via their respective communication channels which differ from one another; and an SPI interfacing unit which is connected to the wireless transmit/receive units, which selects a wireless transmit/receive unit to which a data frame received from the signal processing unit via the SPI is to be output from among the wireless transmit/receive units, based on information regarding selection of the wireless transmit/receive unit, wherein the information is contained in the receive data frame, and which outputs data frames received from the wireless transmit/receive units to the signal processing unit via an SPI, wherein the SPI interfacing unit comprises: a distribution processing unit outputting the data frame received from the signal processing unit towards the selected wireless transmit/receive unit based on the information regarding the selection of the wireless transmit/receive unit; and a plurality of transmission first-in first-outs (FIFOs) respectively connected to the wireless transmit/receive units, wherein one of the plurality of transmission FIFOs receives the data frame output from the distribution processing unit and outputs the data frame to the selected wireless transmit/receive unit.