Abstract: Methods and systems of for multicast transport call session control for improving forward bandwidth utilization are disclosed. Forward channel bandwidth utilization is improved through pipelining and in-band token control of the multicast protocol when there exists a multiplicity of data objects for delivery from the server (202) to the clients (208).

Abstract: Methods and systems to efficiently share multiple satellites and associated transponders or links among a network of uplinking earth stations are disclosed. An embodiment of this invention uses a terrestrial communications link, such as the Internet, to control access to the transponder or satellite links. Communications over this link may employ a TCP/IP protocol to connect the requesting uplinking earth stations with a centralized controller. This control system creates more efficient use of satellite resources and reduces the overall amount of time needed for transmitting data through the satellite. By reducing the overall amount of time needed for transmitting data, the control system may reduce the cost of using the satellite transponder capacity.