On the Multihop Performance of Synchronization Mechanisms in High Propagation Delay Networks
We analyze the single and multihop performance of time synchronization mechanisms for challenging environments characterized by high propagation delays, low duty-cycle operation, and imprecise clocks, such as underwater acoustic sensor networks. We find ...
Differentiating Services with Noncongestive Queuing (NCQ)
We discuss a new packet service paradigm, called "Less Impact Better Service” (LIBS), which is realized through a novel queuing discipline, called "Noncongestive Queuing” (NCQ). NCQ prioritizes small packets when conditions permit and utilizes service ...
Coordinated En-Route Web Caching in Multiserver Networks
With the emergence of various advanced networks that comprise a group of geographically distributed servers, such as Content Delivery Networks (CDNs) and Peer-to-Peer (P2P) systems, coordinated en-route Web caching in multiserver networks becomes ...
Practical Deadlock-Free Fault-Tolerant Routing in Meshes Based on the Planar Network Fault Model
The number of virtual channels required for deadlock-free routing is important for cost-effective and high-performance system design. The planar adaptive routing scheme is an effective deadlock avoidance technique using only three virtual channels for ...
A Safe Stochastic Analysis with Relaxed Limitations on the Periodic Task Model
This paper proposes a safe stochastic analysis for fixed-priority scheduling, which is applicable to a broader spectrum of periodic tasks than the ones analyzable by any of the existing techniques. The proposed analysis can find a safe upper-bound of ...
Prediction-Based Micro-Scheduler: Toward Responsive Scheduling of General-Purpose Operating Systems
In this paper, we propose a novel scheduling technique to improve the responsiveness of a real-time process while maintaining relative execution rates of non-real-time processes, called the prediction-based micro-scheduler. It runs upon an existing ...
Provably Secure Steganography
Steganography is the problem of hiding secret messages in "innocent-looking” public communication so that the presence of the secret messages cannot be detected. This paper introduces a cryptographic formalization of steganographic security in terms of ...
An Efficient Directed Localization Recursion Protocol for Wireless Sensor Networks
- Horacio Antonio Braga Fernandes de Oliveira,
- Azzedine Boukerche,
- Eduardo Freire Nakamura,
- Antonio Alfredo Ferreira Loureiro
The establishment of a localization system is an important task in wireless sensor networks. Due to the geographical correlation between sensed data, location information is commonly used to name the gathered data and address nodes and regions in data ...
Modeling Detection Latency with Collaborative Mobile Sensing Architecture
Detection latency, which is defined as the time from the target arrival to the time of the first detection, is an important metric for the performance of sensor networks carrying out target detection, especially when the target is malicious or hostile. ...
Enhancing Downlink Performance in Wireless Networks by Simultaneous Multiple Packet Transmission
In this paper, we consider using simultaneous Multiple Packet Transmission (MPT) to improve the downlink performance of wireless networks. With MPT, the sender can send two compatible packets simultaneously to two distinct receivers and can double the ...
