2 research outputs found
Popularity based Bandwidth Allocation for Video Broadcast/Multicast over Wireless Networks
Recently, video broadcast/multicast over wireless networks has created a
significant interest in the field of wireless communication. However, the
wireless resources have limitations to broadcast/multicast many video sessions
at the same time with the best quality. Hence, during the video transmission
through wireless networks, it is very important to make the best utilization of
the limited bandwidth. When the system bandwidth is not sufficient to allocate
the demanded bandwidth for all of the active broadcasting/multicasting video
sessions, instead of allocating equal bandwidth to each of them, our proposed
scheme allocates bandwidth per video session based on popularity of the video
program. Using the mathematical and simulation analyses, we show that the
proposed scheme maximizes average user satisfaction level. The simulation
results also indicate that a large number of subscribers can receive a
significantly improved quality of video. To improve the video quality for large
number of subscribers, the only tradeoff is that a very few subscribers receive
slightly degraded video quality.Comment: International Conference on ICT Convergence (ICTC), Sept. 2011,
Seoul, Korea, pp. 373 -37
Adaptive Resource Management for Multimedia Applications in Femtocellular and Macrocellular Networks
The increasing demands of various high data rate wireless applications have
been seen in the recent years and it will continue in the future. To fulfill
these demands, the limited existing wireless resources should be utilized
properly or new wireless technology should be developed. Therefore, we propose
some novel idea to manage the wireless resources and deployment of
femtocellular network technology. The study was mainly divided into two parts:
(a) femtocellular network deployment and resource allocation and (b) resource
management for macrocellular networks. The femtocellular network deployment
scenarios, integrated femtocell/macrocell network architectures, cost-effective
frequency planning, and mobility management schemes are presented in first
part. In the second part, we provide a CAC based on adaptive bandwidth
allocation for the wireless network in. The proposed CAC relies on adaptive
multi-level bandwidth-allocation scheme for non-real-time calls. We propose
video service provisioning over wireless networks. We provide a QoS adaptive
radio resource allocation as well as popularity based bandwidth allocation
schemes for scalable videos over wireless cellular networks. All the proposed
schemes are verified through several numerical and simulation results. The
research results presented in this dissertation clearly imply the advantages of
our proposed schemes.Comment: PhD Dessertatio