A rate-adaptive MAC protocol for multi-Hop wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Automatic IEEE 802.11 rate control for streaming applications: Research Articles
Wireless Communications & Mobile Computing - Radio Link and Transport Protocol Engineering for Future-Generation Wireless Mobile Data Networks
WiPS: Location and Motion Sensing Technique of IEEE 802.11 Devices
ICITA '05 Proceedings of the Third International Conference on Information Technology and Applications (ICITA'05) Volume 2 - Volume 02
Assessing the efficiency of stream reuse techniques in P2P video-on-demand systems
Journal of Network and Computer Applications
Efficient Support to Scalable Delivery of VoD Systems Using Collocated Access Points
ICNICONSMCL '06 Proceedings of the International Conference on Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies
On using grid of collocated APs to improve performance of wireless VoD systems
Proceedings of the 5th International Latin American Networking Conference
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This paper investigates the impact of clients' position in scalable wireless VoD systems, based on collocated access points. In particular, it evaluates the use of several transmission modes provided by the 802.11a standard, aiming to service different area sizes, using the CINAPS (Cluster of Inexpensive Access Points) system, which was extended with a novel distance-aware association control heuristic. Overall, our simulated results showed that the clients' position influences only when the blockage rate of requests given by the other system variables is up to the uncovered area coefficient. Moreover, they suggest that an adaptive approach of transmission mode choice could achieve a slightly better average blockage rate but significantly far from the ideal values.Este artigo investiga o impacto da posição dos clientes no desempenho de sistemas de VoD sem fio escal´veis, baseados em pontos de acesso co-localizados. Em particular, é avaliado o uso de v´rios modos de transmissão do padrão 802.11a, visando atender ´reas de diferentes tamanhos, utilizando como base o sistema CINAPS (Cluster of Inexpensive Access Points), estendido com uma nova heurĩstica de controle de associação distance-aware. Os resultados mostram que o posicionamento dos clientes influencia apenas quando a taxa de bloqueio determinada pelas demais vari´veis do sistema é inferior ao coeficiente de ´rea descoberta. Além disso, eles sugerem que uma abordagem adaptativa de escolha de modo de transmissão poderia melhorar levemente a taxa de bloqueio média mas ainda distante dos valores ideais.