Multiple-Input and Multiple-Output (MIMO) systems are recently being recognized for achieving simultaneous transmissions on wireless channels that overlap in time. As a result, new scheduling mechanisms are required that coordinate these multiple transmissions among wireless stations which share a single wireless channel. This paper proposes a new distributed MIMO-aware media access control (MA...

We introduce a Media Access Control (MAC) development platform for wireless LANs that 1) complements traditional simulation and analytical tools, and 2) provides a pioneering platform in academia based on the de-facto standard Windows operating system in addition to the legacy Unix environment. Our implementation includes two main modules 1) a wireless LAN network interface card (NIC) that incl...

This specification registers an XML-based media type for the eXtensible Access Control Markup Language (XACML). Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This is a contribution to the RFC Series, independently of any other RFC stream. The RFC Editor has chosen to publish this document at its discretion and mak...

As the nodes in Wireless Sensor Networks (WSNs) have limited power, energy conservation is essential at different layers of the protocol stack to prolong lifetime. In our previous work, ”Priority based slot allocation for media access in wireless sensor networks” (PSAWSN), probability based priority scheme is used to allocate slots to competing nodes. Limitations of this work include 1) It does...

The FluidMedia system provides a convenient means to legally transfer copyrighted digital media. Its ability to support off-line sales transactions and authentication of media access rights allows system users great flexibility in the way they access and distribute media, yet still provides strong control over piracy for content distributors. Furthermore, the FluidMedia system supports transact...

Based on application requirements, nodes are static or mobile in Wireless Sensor Networks (WSNs). Mobility poses challenges in protocol design, especially at the link layer requiring mobility adaptation algorithms to localize mobile nodes and predict link quality to be established with them. This study implements XMAC and Berkeley Media Access Control (BMAC) routing protocols to evaluate perfor...

In a Ubiquitous Computing environment, sensors are actively collecting data, much of which can be very sensitive. Data will often be streaming at high rates (video and audio) and it must be dealt with in real-time. Protecting the privacy of users is of central importance. Effective solutions for controlling access to data in ubicomp settings remain to be developed. Dealing with these issues wil...

Service on-demand (SoD) systems allow their users to regulate the sharing of common resources via a voting process. A common application example is the collaborative scheduling of multimedia transmissions in e-radio or video streaming services. Therefore, high user commitment and participation is critical to the success of a SoD system. Securing a SoD system against common attacks, such as vote...