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Wireless multicast for layered media

Image Number 3 for United States Patent #8125903.

A method and arrangement in a wireless communication network for optimizing data rates when communicating layered multicast data. In an initial probing phase, the receiving capability of each user equipment (UE) in each cell is collected. The optimal data rate for each layer is then calculated and packets are transmitted to the UEs at the optimal rates. The UEs may periodically send updated receiving capabilities so that the optimal data rates can be updated. Additionally, the network may periodically obtain the updated receiving capabilities through secondary probing at unused data rates.

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