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ZDNet Resources
- Regional Congestion Awareness for Load Balance in Networks-on-Chip
- Interconnection Networks-On-Chip NOCs are rapidly replacing other forms of interconnect in chip multiprocessors and system-on-chip designs. Existing interconnection networks use either oblivious or adaptive routing algorithms to determine the route taken by a packet to its destination. Despite somewhat higher implementation complexity, adaptive routing enjoys better fault tolerance characteristics, increases...
- Tags: Fault-tolerance, Network, University Of Texas, Networking
- White papers 2008-02-10
- Load Balancing for Reliable Multicast
- New applications emerge along with the rapid growth of the Internet. Many functionalities other than packet forwarding are being proposed to be added into routers for supporting those new applications. Those functionalities significantly improve the performances of the applications, but they incur overheads on routers at the same time. It...
- Tags: Router, Load Balancing, Multicast, University Of Texas, Functionality, Routers & Switches, Network Technology, Performance Management, Networking, Human Resources, Workforce Management
- White papers 2008-01-01
- Local Recovery Solutions From Multi-Link Failures in MPLS-TE Networks With Probable Failure Patterns
- MPLS TE Fast Reroute proposes a local protection mechanism to quickly reroute protected TE LSPs onto pre-computed and signaled bypass tunnels. This paper explores the case of multiple network element failure scenarios. The undesired complexity inherent to the multiple failure scenarios originates from the fact that those failure scenarios are...
- Tags: Network, University Of Texas, MPLS TE Fast Reroute, Failure Scenario, PFP, Networking, Network Technology
- White papers 2008-01-01
- Cross-Layer Discovery and Routing in Reconfigurable Wireless Networks
- The work discussed in this paper addresses the need for application-aware adaptive communication in mobile ad hoc networks that creates network routes based on applications' dynamic resource requests. This paper introduces an intuitive generalization to source routing which facilitates discovery of a resource in a mobile ad hoc network and...
- Tags: Network, University Of Texas, Wireless Network, Wireless, Networking
- White papers 2007-07-16
- A Local Data Abstraction and Communication Paradigm for Pervasive Computing
- As sensor networks are increasingly used to support pervasive computing, this paper envisions an instrumented environment that can provide varying amounts of information to mobile applications immersed within the network. Such a scenario deviates from existing deployments of sensor networks which are often highly application-specific and funnel information to a...
- Tags: Network, University Of Texas, Mobile Application, Computing, Abstraction, Wireless
- White papers 2007-04-21
- Multiuser Limited Feedback for Wireless Multi-Antenna Communication
- For a wireless multi-antenna network with a large number of users, the sum capacity scales at most linearly with the number of antennas and double logarithmically the number of users. Achieving this optimal capacity scaling potentially requires feedback of Channel State Information CSI from all users, leading to overflow of...
- Tags: Feedback, University Of Texas, Wi-Fi, Wireless
- White papers 2007-04-20
- 'Flexible' plastic for electronic circuits?
- By adding a polymer acid to a common plastic, chemists at the University of Texas at Austin have developed a plastic with changeable conductivity which could be used to build future electronic devices. This doped plastic can be manufactured at room temperature and can have a conductivity ten times higher...
- Tags: Science &, Nature, Engineering &, Innovation, Defense &, Security
- Blog posts 2007-04-11
- Data-Logging and Supervisory Control in Wireless Sensor Networks
- Wireless Sensor Networks WSN are being increasingly used in a multitude of applications such as environmental and structural health monitoring, and condition-based maintenance. Even though the sensors collect a vast amount of data, only a tiny fraction of this data may be useful. This paper proposes a data-logging & supervisory...
- Tags: Network, Sensor, University Of Texas, Discrete Event Controller, Wi-Fi, Wireless
- White papers 2007-04-11
- HiEd Inc. Recommends and Resells Dell Systems to Keep Students Connected
- HiEd Inc., a privately-owned company based in Richardson, Texas, provides outsourced management of on-campus technology stores. HiEd's stores offer quality computers, peripherals, software and services to higher education campuses including the University of Texas at Austin, Southern Methodist University, University of Houston and University of Texas at Dallas. HiEd's goal...
- Tags: Dell Computer Corp., University Of Texas, Store, Connected Corp., HiEd Inc., Outsourcing, Pricing, It Operations, Business Operations, Outsourcing & Subcontracting, Marketing
- Case studies 2007-04-01
- On Optimal Geographic Routing in Wireless Networks With Holes and Non-Uniform Traffic
- This paper presents algorithms for throughput optimal routing in networks with holes and non-uniform traffic. The algorithms preserve the inherent advantages of geographic routing such as scalability and fast convergence while providing better throughput. In future, the analysis will be extended to networks with a larger class of holes and...
- Tags: Algorithm, Network, University Of Texas, Hole, Wireless Network, Engineering, Networking, Wireless
- White papers 2007-02-03
- Capacity Scaling of Ad Hoc Networks With Spatial Diversity
- This paper derives the exact outage probability and transmission capacity of ad hoc wireless networks with nodes employing multiple antenna diversity techniques. The analysis enables a direct comparison of the number of simultaneous transmissions achieving a certain data rate under different diversity techniques. Preliminary results derive the outage probability and...
- Tags: Advertisement, University Of Texas, Analysis, Productivity, Wi-Fi, Wireless
- White papers 2007-01-23
- TCP Nice: A Mechanism for Background Transfers
- This paper presents an end-to-end congestion control algorithm optimized to support background transfers. Surprisingly, an end-to-end protocol can nearly approximate the ideal router-prioritization strategy by almost eliminating interference with demand flows and reaping significant fractions of available spare network bandwidth. The Internet experiments suggest that there is a significant amount...
- Tags: University Of Texas, TCP, Internet, Tcp/Ip, Engineering, Networking
- White papers 2007-01-01
- Real-Time End-to-End Network Monitoring in Large Distributed Systems
- Measuring real-time end-to-end network path performance metrics is important for several distributed applications such as media streaming systems (e.g., for switching to paths with higher bandwidth and lower jitter) and content distribution systems (e.g., for selecting servers with lower latency). However, it is challenging to perform such end-to-end pairwise measurements...
- Tags: Network, University Of Texas, Distributed System, Network Monitoring, Networking
- White papers 2006-12-02
- Traffic-Aware Channel Assignment in Wireless LANs
- Campus and enterprise wireless networks are increasingly characterized by ubiquitous coverage and rising traffic demands. Efficiently assigning channels to Access Points APs in these networks can significantly affect the performance and capacity of the wireless LAN. Several research studies have tackled this issue. However, even the state-of-the-art approaches assign channels...
- Tags: Aware, Network, Traffic, WLAN, University Of Texas, Channel Assignment Problem, LANs, Wireless LANs, Wi-Fi, Wireless, Networking
- White papers 2006-09-03
- Service Oriented Evolutions and Analyses of Design Patterns
- The globalization of software development helps to reduce business cost by outsourcing software design and development tasks. However, it also poses new challenges on the collaboration and management of the development teams at multiple remote sites. Service-oriented approaches facilitate web-based collaborations and reuses. This paper proposes a service-oriented architecture for...
- Tags: Software, Team, Design Pattern, University Of Texas, Tools & Techniques, Team Management, Management
- White papers 2006-08-10
- Opportunistic Feedback in Clustered OFDM Systems
- This paper proposes a random access based feedback protocol for the clustered Orthogonal Frequency Division Multiplexing OFDM downlink, which allows users to feed back their channel information to the Base Station BS in a distributed fashion. The proposed protocol employs a contention channel that consists of fixed amount of system...
- Tags: Feedback, Protocol, University Of Texas, OFDM, Wireless
- White papers 2006-06-30
- Inducing Multiscale Clustering Using Multistage MAC Contention in CDMA Ad Hoc Networks
- This paper proposes a new principle for designing MAC protocols for CDMA based ad hoc networks - inducing spatial clustering in contending transmitters/receivers. The paper first highlights the advantages of CDMA in handling Quality of Service QoS requirements, enhancing energy efficiency, and enabling spatial multiplexing of bursty traffic. Then, based...
- Tags: CDMA, Clustering, University Of Texas, Reuse, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2006-06-25
- A Symbol Estimation Scheme for Alamouti Coded OFDM Systems
- In Alamouti coded OFDM systems, the simple decoding at the receiver relies on the assumption that the subchannels are flat fading, decoupled, and quasi-static so that each subchannel does not change over an Alamouti codeword period two consecutive OFDM symbol periods. When the channel is fast fading, however, these assumptions...
- Tags: Performance, Performance Degradation, University Of Texas, OFDM, Performance Management, Wireless, Human Resources, Workforce Management
- White papers 2006-06-20
- The Linux Kernel: A Challenging Workload for Transactional Memory
- The Linux operating system kernel is a large, mature, freely available, and well-tuned concurrent program. As such it is an ideal workload for a transactional memory hardware design. Operating systems need transactional memory for performance scalability, to help maintainability, and to provide services related to transactions to user programs. Most...
- Tags: Linux Kernel, Operating System, Scalability, Memory, University Of Texas, Linux Operating System Kernel, Linux, Operating Systems, UNIX, Open Source, Software
- White papers 2006-06-05
- Reducing Feedback for Opportunistic Scheduling in Wireless Systems
- This paper studies reducing the feedback overheads for users' channel state information required for opportunistic scheduling at a base station. The paper first considers only best effort traffic; here it proposes a contention based scheme known as 'Static splitting' to reduce the amount of feedback needed. The idea is to...
- Tags: Feedback, University Of Texas, Idea, Wi-Fi, Wireless
- White papers 2006-05-12
White Papers and Webcasts