Search International and National Patent Collections

1. (WO2013163465) IMPAIRMENT SIMULATION FOR NETWORK COMMUNICATION TO ENABLE VOICE QUALITY DEGRADATION ESTIMATION

Pub. No.:    WO/2013/163465    International Application No.:    PCT/US2013/038273
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Fri Apr 26 01:59:59 CEST 2013
IPC: H04M 1/24
Applicants: ANRITSU COMPANY
Inventors: DORENBOSCH, Jheroen, Pieter
COLLINS, Zachry, Shay
Title: IMPAIRMENT SIMULATION FOR NETWORK COMMUNICATION TO ENABLE VOICE QUALITY DEGRADATION ESTIMATION
Abstract:
An automated method for testing audio signal quality of cell phone transmissions provides a Mean Opinion Score (MOS) output using inexpensive test components. The test system uses a server computer to eliminate the need for expensive faders used in a bench test system. The server computer manipulates data packets from the reference media file to simulate impairments, including losses, errors, noise and jitter, at a much lower cost than using actual faders. Transmission through two separate radio access networks RANs is provided to simulate two parties communicating using separate mobile devices (an end-to-end test solution) with a single cell phone.