IEEE 802.16e (mobile WiMAX) uplink behavior is a relatively neglected area of investigation, but emerging interactive media services have highlighted the need for closer investigation of uplink issues. In this simulation study of uplink queue management, media streaming by TCP-Friendly Rate Control (TFRC) was found to offer advantages. However, temporal behavior of the queuing disciplines exhibits oscillations in buffer occupancy with build-up of delay during video streaming. The paper suggests a possible remedy lies in the choice of the more complex H.264/AVC Main profile, though this will impact upon mobile devices. It was also found that WiMAX video delivery is sensitive to choice of transmission frame size.
Abstract-Employing multiple TFRC connections has emerged as a promising lightweight way of coping with wireless channel losses in a congestion-controlled tandem network. This work extends multiple TFRC connection streaming to broadband uplink streaming. This study differs from earlier work for a number of reasons: it reports on a specific wireless technology, IEEE 802.16 (WiMAX); it considers the impact on buffer management at the subscriber station rather than at the Internet end; and it considers actual delivered video quality and not simply network statistics. In terms of video quality, it is reported that multiple TFRC connection streaming has a role to play provided there are only a few connections opened at any one time. Therefore, the work demonstrates that multimedia services can be achieved over broadband wireless by multiple TFRC connection streaming.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.