Title :
QoS assurance for video service over heterogeneous mobile hotspots
Author :
Song, Wei ; Guang, Yang ; Cheng, Yu
Author_Institution :
Fac. of Comput. Sci., Univ. of New Brunswick, Fredericton, NB, Canada
Abstract :
A mobile hotspot in a vehicular environment consists of a group of end users that move as a whole in a public transit. This work analyzes the performance of video service in mobile hotspots based on heterogeneous wireless technologies. We jointly consider the contention-based random access of the WLAN for the link layer, adaptive modulation and coding of the WWAN link at the physical layer, and batch packet arrivals of video traffic at the application layer. Taking into account the highly varying WWAN link due to vehicle mobility and multipath fading, we analyze the delay and loss performance of video service at the packet level. The numerical examples demonstrate the effects of link bandwidth, vehicle mobility, and channel fading.
Keywords :
adaptive modulation; fading channels; mobility management (mobile radio); modulation coding; quality of service; radio access networks; radio links; telecommunication services; telecommunication traffic; wide area networks; wireless LAN; QoS assurance; WLAN; WWAN link; adaptive modulation coding; application layer; batch packet arrival; contention-based random access; delay performance analysis; heterogeneous mobile hotspot; heterogeneous wireless technology; link bandwidth effect; link layer; loss performance analysis; multipath fading channel; physical layer; public transit; vehicle mobility; vehicular environment; video service; video traffic; Delay; Fading; Mobile communication; Streaming media; Wireless LAN; Wireless communication; Mobile hotspots; Nakagami fading; batch arrivals; packet delay and loss; video service;
Conference_Titel :
Communications (ICC), 2012 IEEE International Conference on
Conference_Location :
Ottawa, ON
Print_ISBN :
978-1-4577-2052-9
Electronic_ISBN :
1550-3607
DOI :
10.1109/ICC.2012.6363732
