DOCSIS performance evaluation
Stefen Howard, Jim C. Martin · 2005
Demand for high-speed internet access is growing rapidly and new technologies have been developed to supply broadband access to homes and small businesses. One of these technologies, DOCSIS, delivers high-speed internet connections through existing cable television service. While many factors affect performance, an evaluation of the process by which cable modems request upstream bandwidth has not been studied under realistic web traffic conditions. Our study uses the network simulator ns along with our own DOCSIS extension to model these conditions. We studied the DOCSIS protocol, looking specifically at the performance effects of two enhancements to the bandwidth request mechanisms: piggybacking and concatenation. Our results show that piggybacking alone is the most effective method for enhancing the overall performance of DOCSIS.