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In order to provide efficient support of interactive packet services on downlink dedicated channels (DCH) in a WCDMA FDD (frequency division duplexing) system, we envisage a novel MAC measurement based (MMB) packet scheduling algorithm. The MMB scheduler switches packets between DCH of different rates based on traffic volume measurements of their corresponding serving DCH buffers. Algorithm performance has been evaluated by system simulations in terms of average packet throughput. Numerical results show that the provided MMB packet scheduling algorithm has consistent performance for different traffic sources and various DCH combinations studied, arguing its capabilities of robust handling of multiple services of interactive class and support of elastic access capacity.