QoE oriented cross-layer design of a resource allocation algorithm in beyond 3G systems
Computer Communications
A user-decided service model and resource management in a cooperative WiMAX/HSDPA network
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Cross-layer channel-aware approaches for modern wireless networks
MACOM'10 Proceedings of the Third international conference on Multiple access communications
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
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This paper presents results from a subjective survey of user experience for data applications in future cellular wireless networks. Using a network emulator, we tested various computing scenarios with different channel sharing schemes (dedicated and shared bandwidth), computing models (local processing with remote files and thin-client server based computing), applications (Web browsing, MS Word, and MS PowerPoint), and devices (laptops and Palm devices). Subjective quality ratings (1 to 5) from 100+ users were collected to obtain an average quality score for the user experience in each scenario. They are used to generate a set of utility curves based on channel rate and number of users sharing the system. Our survey results show that, with laptop-type devices, the preferred computing model changes with the application, and may also change as the available bandwidth changes. For Palm devices, the ability to handle general computing tasks is primarily limited by the display and is not sensitive to the wireless channel conditions.