Patent ID: 7720947

Claim:
A method of reserving a transmission band of a transmission line for transmitting data via a plurality of Internet service providers on the Internet between a content server and a terminal, the method comprising the steps of: (a) the content server requesting an intermediary server to reserve the transmission band by transmitting a user policy that includes an ordering number, a requested band, a reservation start date and time, and a reservation end date and time; and (b) the intermediary server reserving the transmission band for the content server and the terminal, wherein the reserving step further includes the steps of: receiving the user policy; storing the received user policy; searching for IP addresses of policy servers of the plurality of Internet service providers; transmitting the user policy to each policy server corresponding to each of the plurality of Internet service providers, said each policy server storing the transmitted user policy; receiving a band reservation result from each corresponding policy server; determining whether the requested band reservation is confirmed by the band reservation results; and transmitting the band reservation results to the content server, and wherein charging data, for charging one or more of a transmitter and a receiver of said data for transmission quality assurance per said plurality of Internet service providers, is constructed at one or more of said content server, said intermediary server, and said policy server.