Abstract: A satellite system includes a plurality of orbit slots having a first orbital and a second orbital slot. A first satellite occupies a first orbital slot and generates a first set of uniform beams. A second satellite located in a second orbital slot generates a second set of uniform beams. A tiling pattern on the face of the Earth has a plurality of cells, with each of the cells having a defined frequency for communication. The first set of beams and the second set of beams are generated according to parameters to avoid interference between them. The parameters may include satellite orbit separations, beam size, multiplicity of band reuse, and ground station received beamwidth.

Abstract: A system and a method for server recording and client playback of computer network characteristics. In general, the network simulation system includes a recording module residing on a server that records and stores the network characteristics in a data collector file. The system also includes a playback module residing on a client that plays back the data collector file upon request. The data collector file includes a log file, which is used to store initial request data, and a data file, which is used to store other data. The method of the invention includes recording computer network characteristics on a recording server and playing back the recording on a client to the same or another server. The recording method uses a global filter residing on the server to record the network characteristics. The playback method plays back the data collector file to simulate the characteristics of real-world network sessions.

Abstract: System and a method for server recording and client playback of computer network characteristics. In general, the network simulation system includes a recording module that resides on a server and records and stores the network characteristics associated with networks sessions in a data collector file. The system also includes a playback module that resides on a client and receives the data collector file and plays back the data collector file upon request. The recording method of the present invention includes using a global filter residing on the server to record the network characteristics and storing the recording in a data collector file. The playback method includes receiving a data collector file containing recorded network characteristics recorded on a server and playing back the data collector file to simulate the characteristics of real-world network sessions.

Abstract: A satellite system includes a plurality of orbit slots having a first orbital and a second orbital slot. A first satellite occupies a first orbital slot and generates a first set of uniform beams. A second satellite located in a second orbital slot generates a second set of uniform beams. A tiling pattern on the face of the Earth has a plurality of cells, with each of the cells having a defined frequency for communication. The first set of beams and the second set of beams are generated according to parameters to avoid interference between them. The parameters may include satellite orbit separations, beam size, multiplicity of band reuse, and ground station received beamwidth.

Abstract: A satellite system includes a plurality of orbit slots having a first orbital and a second orbital slot. A first satellite occupies a first orbital slot and generates a first set of uniform beams. A second satellite located in a second orbital slot generates a second set of uniform beams. A tiling pattern on the face of the Earth has a plurality of cells, with each of the cells having a defined frequency for communication. The first set of beams and the second set of beams are generated according to parameters to avoid interference between them. The parameters may include satellite orbit separations, beam size, multiplicity of band reuse, and ground station received beamwidth.

Abstract: A method and system for selectively installing different operating systems on computers. The configuration system initially installs a first operating system, such as a Linux-based operating system, on each of the computers. This installation process may require the manual insertion of a floppy disk or CD-ROM into the computer. Once the first operating system is installed, the second operating system, such as the NT operating system, can be installed without manual intervention at the computer. The configuration system directs the installation of the second operating system via a local area network that is connected to an installation server.