| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the indoor short range communication network system which uses the ultra wideband communication method and is low in price. <P>SOLUTION: The indoor short range communication network system comprises remote terminals 120, 220 including ultra wideband modules 122,222 which convert data into an ultra wideband analog signal and transfer it by a wireless, and also convert the received ultra wideband analog signal into a digital signal and output it, access points 140, 240 which communicate with the remote terminal in an assigned region by the ultra wideband wireless communication and convert the ultra wideband analog signal transferred from the remote terminal into an optical signal, and a central unit 400 which communicates with the access point by an optical communication, converts the optical signal into the digital signal when the optical signal converted by the access point is received, determines a destination and transfers it to the destination based on determination results. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
