Optimal Network Selection in Heterogeneous Wireless Multimedia Networks

Si, Pengbo; Yu, F. Richard; Ji, Hong; Leung, Victor C. M.

doi:10.1109/icc.2009.5199281

Cited by 16 publications

(17 citation statements)

References 28 publications

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“…It can be observed that HSDPA supports relatively stable link while the available bandwidth of WiMAX and WLAN experiences frequent fluctuations during the client mobility. It is well-known that cellular networks exhibit better performance in sustaining user mobility than WiMAX and WLAN but provide a lower peak data rate [6] [43]. Higher goodput values generally lead to lower channel distortion of streaming video, which guarantees more video frames deliver within the decoding deadline and thus results in the performance gains in PSNR.…”

Section: Evaluation Resultsmentioning

confidence: 97%

Goodput-Aware Load Distribution for Real-Time Traffic over Multipath Networks

Yuen

Cheng

et al. 2015

IEEE Trans. Parallel Distrib. Syst.

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Load distribution is a key research issue in deploying the limited network resources available to support traffic transmissions. Developing an effective solution is critical for enhancing traffic performance and network utilization. In this paper, we investigate the problem of load distribution for real-time traffic over multipath networks. Due to the path diversity and unreliability in heterogeneous overlay networks, large end-to-end delay and consecutive packet losses can significantly degrade the traffic flow's goodput, whereas existing studies mainly focus on the delay or throughput performance. To address the challenging problems, we propose a GoodputAware Load distribuTiON (GALTON) model that includes three phases: (1) path status estimation to accurately sense the quality of each transport link, (2) flow rate assignment to optimize the aggregate goodput of input traffic, and (3) deadline-constrained packet interleaving to mitigate consecutive losses. We present a mathematical formulation for multipath load distribution and derive the solution based on utility theory. The performance of the proposed model is evaluated through semi-physical emulations in Exata involving both real Internet traffic traces and H.264 video streaming. Experimental results show that GALTON outperforms existing traffic distribution models in terms of goodput, video PSNR (Peak Signal-to-Noise Ratio), end-to-end delay, and aggregate loss rate.

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Section: Evaluation Resultsmentioning

confidence: 97%

Goodput-Aware Load Distribution for Real-Time Traffic over Multipath Networks

Yuen

Cheng

et al. 2015

IEEE Trans. Parallel Distrib. Syst.

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“…Most of the earlier work on integrating heterogeneous wireless networks was focused on network layer quality of service (QoS), such as utilization and blocking probability, as design criteria. However, authors in [3] projected another distributed network selection scheme in heterogeneous wireless networks considering multimedia application layer QoS in which integrated networks was formulated as a restless bandit system resulting in indexable optimal network selection policy which was suitable for both loose coupling and tight coupling scenarios. Another flexible and scalable network selection scheme for multi-service heterogeneous wireless networks has been proposed in [4] in which, the profiles were created for users to symbolize their characteristics in terms of traffic status, mobility and QoS and the best cell was determined for each user by profile matching.…”

Section: Related Workmentioning

confidence: 99%

“…The system modeling is presented in Sect. 3. An approach to select a suitable network is represented in Sect.…”

Section: Introductionmentioning

confidence: 99%

Optimal Network Selection in Heterogeneous Wireless Environment for Multimedia Services

Ahuja

Singh

Khanna

2015

Wireless Pers Commun

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In wireless communication, new radio access technologies are emerging, capable of supporting larger coverage area and faster data rates. In a wireless heterogeneous environment consisting of disparate radio access technologies, selection of the best network is an important research issue. In this paper, we propose a novel network selection algorithm for a heterogeneous environment consisting of WiMAX and LTE standard. The proposed algorithm is based on received signal strength, signal to noise ratio, available bit rate, achievable throughput and bit error rate. Relative weights of the decision making attributes are optimized by employing particle swarm optimization approach. The number of satisfied users calculated (as per their demand with wireless network selected) by proposed algorithm is optimized by modified PSO and confirmed by Monte Carlo method. From the simulation results it is inferred that the number satisfied users while running multimedia applications has been improved by 50 % as compared to the existing network selection algorithms.

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“…The scheme is formulated as a restless bandit problem, which is based on the development of multi‐armed bandit problem . Restless bandit model, as a type of stochastic control systems, has been widely applied in many areas, including robot control, environment detection, financial investment, and cognitive radio communications, among others . The main contributions of this paper are as follows.…”

Section: Introductionmentioning

confidence: 99%

Quality of service‐aware and security‐aware dynamic spectrum management in cyber‐physical surveillance systems for transportation

Liu

Sun

et al. 2014

Security Comm Networks

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Cyber‐physical system has been widely used in various areas as the integration of computing and physical system. As a typical application of cyber‐physical system, cyber‐physical surveillance system for transportation (CPSST) allows real‐time video monitoring to facilitate the deploying of smart transportation systems. For video streaming in CPSST, dynamic radio spectrum management is a key technology dealing with the current situation that the spectrum resource is almost used up. In this paper, taking into account the application layer quality of service and wireless link security, a novel dynamic spectrum management scheme has been proposed to minimize the system cost of CPSST. Video distortion is considered as the application layer quality of service metric, and the system cost is defined as a combination of distortion and security cost. We use intra‐refreshing rate in video coding to minimize the distortion. Furthermore, the problem is formulated as a restless bandit system, which uses current and historical information to optimize the action, with the objective of maximizing the total discounted system reward. We also describe the two spectrum management processes. Extensive simulation results are presented to demonstrate the significant performance improvement of the proposed scheme compared with the existing one that ignores video distortion and subband security optimization. Copyright © 2014 John Wiley & Sons, Ltd.

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Optimal Network Selection in Heterogeneous Wireless Multimedia Networks

Cited by 16 publications

References 28 publications

Goodput-Aware Load Distribution for Real-Time Traffic over Multipath Networks

Goodput-Aware Load Distribution for Real-Time Traffic over Multipath Networks

Optimal Network Selection in Heterogeneous Wireless Environment for Multimedia Services

Quality of service‐aware and security‐aware dynamic spectrum management in cyber‐physical surveillance systems for transportation

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