Patent ID: 8750171
Filing Date: 2014-06-10
Classification: H04W

Abstract:
1. A Femtocell/wireless local area network (WLAN) communication device, comprising: a Femtocell module for cellular wireless communications, wherein the Femtocell module has an input for receiving a first electrical input signal and an output for outputting a first electrical output signal; a WLAN module for WLAN communications, wherein the WLAN module has an input for receiving a second electrical input signal and an output for outputting a second electrical output signal; a set of power amplifiers connected to the Femtocell module and the WLAN module, wherein the set of power amplifiers is configured to amplify the first electrical input signal, the first electrical output signal, the second electrical input signal, and the second electrical output signal; an optical interface having a first conversion path connected to the output of the Femtocell module, a second conversion path connected to the output of the WLAN module, a third conversion path connected to the input of the Femtocell module, and a fourth conversion path connected to the input of the WLAN module, wherein the first conversion path is configured to convert the first electrical output signal of the Femtocell module into a first optical output signal, wherein the second conversion path is configured to convert the second electrical output signal of the WLAN module into a second optical output signal, wherein the third conversion path is configured to convert a first optical input signal into the first electrical input signal, and wherein the fourth conversion path is configured to convert a second optical input signal into the second electrical input signal; a common port for receiving the first optical input signal and the second optical input signal and for outputting the first optical output signal and the second optical output signal, and wherein the optical interface comprises a directional coupler connected to both an optical-to-electrical converter and to an electrical-to-optical converter, wherein the direction coupler is configured to couple the first conversion path, the second conversion path, the third conversion path, and the fourth conversion path to the common port for receiving the first optical input signal and the second optical input signal and for outputting the first optical output signal and the second optical output signal.