Patent ID: 7889663
Filing Date: 2011-02-15
Classification: H04W

Abstract:
1. Apparatus operable to emulate handoff to test at least one Device Under Test in a System Under Test, comprising: at least one test device, each test device operable to emulate operation of a plurality of wireless client devices, thereby providing virtual mobile devices; and a motion emulator including a memory with a representation of the System Under Test including, for each virtual mobile device, a model of the distance between the virtual mobile device and each Device Under Test, and a model of motion of the virtual mobile device relative to each Device Under Test, the motion emulator being operable to calculate, for each Device Under Test, an indication of path loss to be applied to communications between the virtual mobile device and the Device Under Test attributable to the modeled distance and modeled motion, and to transmit the indication of path loss to at least one test device, the test device being operable in response to the indication of path loss to apply the path loss to communications between the virtual mobile device and the Device Under Test, wherein the path loss applied to communications received by the virtual mobile device from the Device Under Test is virtually adjusted, each test device includes at least one algorithm operable to process the indication of path loss received from the motion emulator in order to virtually adjust signal strength received by each virtual mobile device, and further including an algorithm operable to prompt discard of a data unit based at least in-part on the magnitude of the indicated signal strength.