The increasing digital communications traffic will require very high speed networks. The use of high communication speed increases the ratio between end to end propagation delay and the packet transmission time. This increase causes rapid performance deterioration and restricts the utilization of the high system bandwidth in broadcast channel based systems. Using several parallel channels in place of a single channel improves this ratio. For a given system bandwidth the total system capacity is increased by bandwidth division and parallel communication. FTDMA protocols have been suggested for the parallel channel network and these protocols are suitable for different loads. In this thesis, the movable boundary allocation protocol has been suggested for the parallel communication architecture. This protocol is suitable for varying loads and yields a better throughput versus delay characteristics. The analysis demonstrates the potential for improvement in the system capacity and the average message delay when compared to conventional single channel system.