Performance enhancement of Web-based push transmitter with channel scheduling

Push provides the automated and personalized Web information delivery. Users can subscribe their interested channels from content providers. These channels will be delivered to users automatically in each update. Among all the components involved in a push system, a transmitter manages the deployment and maintenance of information channels. A content based channel scheduling mechanism for transmitters is designed and evaluated. Instead of push information by arriving order, the transmitter takes three more factors into account, i.e. the channel update period, the size of content, and the waiting time of content in queue. The transmitter delivers channels by their calculated priorities. Studying the results from our XML based simulation system, the new channel scheduling algorithm not only improves the average response time, but also decreases the average loss rate