Abstract:
Provided is a method of identifying a transmission control protocol (TCP) packet loss, including transmitting at least one TCP data packet to a TCP receiver, estimating wireless channel status information using the TCP receiver by interaction between a TCP layer and a physical layer, and receiving an acknowledgement (ACK) packet including the estimated wireless channel status information from the TCP receiver.
Abstract:
A system and method for satellite communication that receives channel status information (CSI) of a forward link connected to a subscriber terminal station, resets a modulation and coding (MODCOD) of a physical layer based on the received CSI, and changes a congestion window value of a transmission layer based on the reset value of the reset MODCOD of the physical layer is provided.
Abstract:
An apparatus for transmitting and receiving data in multiple transmission paths including a satellite network path and a wired network path, the apparatus that receives content data through a satellite network path, receives redundant data including information to be used to restore the content data through a wired network path, and restores a lost portion of the content data using the redundant data, the redundant data being generated by applying network coding to the content data, is provided.
Abstract:
A first terminal according to the present invention is a first terminal among a plurality of terminals which is connected to a district center network management device in a VSAT (very small aperture terminal) system, including: a communication unit which connects the first terminal to the district center network management device through a star network; and a control unit which creates SCPC call establishment request information, transmits the created SCPC call establishment request information to the district center network management device through the communication unit, and performs SCPC connection with another terminal based on SCPC call establishment information which is transmitted from the district center network management device in response to the transmitted SCPC call establishment request information when SCPC (single channel per carrier) connection is desired to be performed with another terminal among the plurality of terminals.
Abstract:
Provided is a satellite terminal controlling apparatus and method that may measure a packet loss rate of a return link at a central station, may determine a modulation and coding (MODCOD) value of the return link using the packet loss rate, and may control MODCOD of a satellite terminal with respect to the return link.