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RSS feed of ComSoc Technology NewsNGSON: Features, State of the Art, and Realization
CTN Issue: February 2012
The rapid deployment and expansion of the Internet has created both an opportunity as well as a challenge in terms of service delivery. The opportunity comes from the variety and global scale of value added applications that can be supported for users. The challenge comes from the difficulties of developing and deploying software to support these applications and users. Service Oriented Architecture (SOA) and Service Delivery Platform (SDP) were introduced to help with these issues, but lacked support for service delivery and QoS across different domains. IEEE Communications MagazineAn Analytical Energy Consumption Model for Packet Transfer over Wireless Links
CTN Issue: February 2012
Energy-efficient data communication is an important requirement in wireless networks. Reducing energy consumption in transceivers during data communication can extend the operational lifetime of battery-powered devices and save energy in a global scale. A fundamental step, however, is to accurately model the energy consumption for data communication over a wireless link. Without the use of such a model, any mechanism designed to be energy-efficient may not be optimal, and any analysis of energy-efficiency may only be a poor approximation. IEEE Communications LettersOn Distributed Multimedia Scheduling with Constrained Control Channels
CTN Issue: January 2012
Traditional multimedia scheduling approaches assume perfect control channels where each node has access to the knowledge of its neighbors. However, in practice the control channels are always constrained and nodes can only exchange limited information with their neighbors, e.g., the control packets are lost during the wireless transmission, and the node only has partial network information. In this case, existing distributed multimedia scheduling schemes cannot work efficiently. This paper investigates how imperfect neighbor information affects the multimedia scheduling, and reveals the relationship between the control gain and scheduling performance based on available network and multimedia information. IEEE Transactions on MultimediaToward an Architecture for Monitoring Private Clouds
CTN Issue: January 2012
Cloud computing has emerged as a new model for service delivery and along with it several issues, most related to adoption, security, and management. Earlier adopters as well as potential users are faced with many management challenges including some affecting the business; e.g., vendor lock-in, while others are related to service operations; e.g. monitoring of network, storage, and computational resources. IEEE Communications MagazineSub-Carrier-Multiplexed Duplex 64-QAM Radio-Over-Fiber Transmission for Distributed Antennas
CTN Issue: January 2012
The past years have witnessed a huge increase in the number of wireless subscribers accessing the Internet from mobile devices. The proportion of high-bandwidth services, such as video-on-demand, video conferencing, voice-over-IP and internet gaming is on the rise. A major contributor to the increase in the demand for these high-bandwidth services is the development of high bitrate portable devices, such as smart-phones and tablet PCs. These mobile devices use WiFi, 3G HSPA and imminently LTE technology for communication with wireless base stations or routers. IEEE Communications Letters
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