Patent ID: 8665740
Filing Date: 2014-03-04
Classification: H04L,H04W

Abstract:
1. A method for controlling point-to-multipoint communications, comprising: providing a bit rate distortion analyzer disposed in a multi-media processing unit; receiving channel condition information for multiple receivers of a point-to-multipoint group, estimating signal-to-noise ratio distortion for the point-to-multipoint group on the basis of the received channel condition information and available encoding bit rates, selecting a bit rate allocation out of the available encoding bit rates providing an optimal overall signal-to-noise ratio for transmission to the point-to-multipoint group, and controlling encoding of content to the point-to-multipoint group in accordance with the selected bit rate allocation, wherein the selected bit rate allocation providing the optimal overall signal-to-noise ratio is based on the estimated signal-to-noise ratio distortion, and wherein the channel condition information comprises a first descriptor indicating available bandwidth and a second descriptor indicating packet loss rate, where the first and the second descriptors are derived from the bit rate distortion analyzer based on the estimated signal-to-noise ratio distortion.