Patent ID: 6687500
Filing Date: 2004-02-03
Classification: H04W

Abstract:
A system for testing handoff of a mobile station (MS) from a first base station (BS1) to a second base station (BS2) comprising:a first baseband processor having an output providing digital signals representative of first base station analog signal levels provided from the first base station (BS1) to the mobile station (MS); a second baseband processor having an output providing digital signals representative of second base station analog signal levels provided from the second base station (BS2) to the mobile station (MS); an adder having a first input coupled to the output of the first baseband processor, and a second input coupled to the output of the second baseband processor, the adder adding digital signals provided at the first and second inputs to provide a digital sum signal at an output; a digital to analog (D/A) converter having an input coupled to the output of the adder to receive the digital sum signal, and an output providing a corresponding analog sum signal for coupling to the mobile station (MS); an analog to digital (A/D) converter having an input for coupling to the mobile station to receive an analog signal, and having an output for providing a digital signal corresponding to the analog signal received at the input of the A/D converter; a mobile station performance measurement unit having an input coupled to the output of the A/D converter for measuring a signal level indication signal transmitted from the mobile station (MS) indicative of the first base station analog signal levels and the second base station analog signal levels.