An Enhanced All-in-One TFRC Protocol for Streaming Video in Wireless Networks

摘要: Rate control is an important issue in video streaming applications for both wired and wireless networks. The widely accepted rate control method in wired networks, ie TCP friendly equation based rate control (TFRC)[1], is known to perform suboptimally in wireless networks. In previous work, we proposed MULTFRC as an end-to-end approach to fully utilize wireless bandwidth, modifying only application layer by opening appropriate number of TFRC connections. We have recently proposed two extensions to MULTFRC, namely, a light-weight approach AOI-TFRC, and a scalable approach Enhanced MULTFRC (E-MULTFRC). AIOTFRC not only enjoys all the advantages of MULTFRC, but also reduces implementation complexity, and the undesirable “quantization effect” associated with MULTFRC by combining multiple TFRC connections into one. E-MULTFRC not only shares all the properties of MULTFRC, but also embraces provable optimality and scalability properties. In this paper, we propose an Enhanced AIO-TFRC (EAIO-TFRC) protocol which combines benefits of both AIO-TFRC and EMULTFRC. NS-2 simulations are carried out to characterize EAIO-TFRC’s performance.