COMMUNICATION SYSTEM, RECEPTION TERMINAL, TRANSMISSION TERMINAL, AND FLOW RATE CONTROL METHOD

摘要

A reception terminal in which a decrease in transmission performance can be prevented when CCN is applied to a best-effort network and real-time streaming packets are transmitted. Reception terminal (200) has: an available band estimation unit (205) for estimating a first available band, which is an available band between the reception terminal (200) and a transfer terminal for caching and transferring real-time streaming packets transmitted from a transmission terminal, and a second available band, which is an available band between the reception terminal (200) and the transmission terminal; and an RTCP-R controller (206) for requesting the transfer terminal to transfer packets and thereby causing the transfer terminal to transfer packets using the first available band at a frequency based on the estimated first available band, and communicating the estimated second available band to the transmission terminal and thereby causing the transmission terminal to transmit packets using the second available band.

主权项

1. A communication system comprising a transmission terminal that transmits a packet in a real-time stream, a transfer terminal that transfers the packet, and a reception terminal that receives the packet, wherein
the transfer terminal includes:
a cache section that caches the packet transmitted from the transmission terminal; anda transfer stack that transfers the packet cached in the cache section to the reception terminal in response to a request from the reception terminal, and the reception terminal includes:
an available band estimating section that estimates a first available band that is an available band between the reception terminal and the transfer terminal, and a second available band that is an available band between the reception terminal and the transmission terminal; andan RTCP-R control section that requests the transfer terminal to transfer the packet using the estimated first available band and that notifies the transmission terminal of the estimated second available band, and the transmission terminal includes
a transmission stack that transmits the packet using the second available band notified by the reception terminal.