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Real-time adaptive packet compression scheme for high latency network

In recent years, due to its cost-effectiveness and ease of deployment, high latency network such as VSAT satellite network has been widely used to interconnect with people especially those in the rural areas. Since the VSAT satellite channels are widely used for real-time interactive multimedia applications that require relatively high bandwidth, this have led to greater demand for network bandwidth and improved transmission efficiency for such network. Unfortunately, VSAT satellite network provides limited network bandwidth and introduces high network latency issues. Satellite transmission bandwidth is usually shared among multiple concurrent users in a contention basis for economic reasons. Thus, bandwidth available for each application can be very much limited. This leads to network congestion and results in substantial delay in packet delivery for real-time applications. These issues have created negative impacts on the Quality-of-Service (QoS) of VSAT satellite networks as well as user experiences. To further improve the network bandwidth utilization and avoid spending extra cost to increase network bandwidth, the adoption of compression technique is essential. This paper proposes a real-time adaptive packet compression scheme especially for improving the QoS of high latency network. This scheme eliminates redundancies in the network packet to reduce the packet size thus improve the bandwidth utilization. Simulation results demonstrate that the proposed scheme is effective in network bandwidth saving and packet loss reduction.