NCS (Network and Cache Simulator) is an HTTP trace-driven discrete event simulator of network and caching activity. It is highly parameterized for maximal compatibility with previous caching and network simulations. In granularity, it resides between the high-level caching-only simulators prominant in much Web caching research, and the detailed simulators of networking protocols and traffic. In...

This paper presents the Merlin network management framework. With Merlin, network administrators express functionality such as accounting, bandwidth provisioning, and traffic filtering in a high-level policy language, and use automated tools and mechanisms to implement them. The framework includes: (i) a declarative language for specifying policies, (ii) infrastructure for distributing, refinin...

This paper presents the experimental TRYSA2 distributed decision support system, that has been designed for the management of the urban motorway network around Barcelona. It shows how different technologies in the area of intelligent agents can be combined to solve this real-world decision support problem: on the one hand, a preestablished distribution of the loci of decision-making and the nat...

As the main gateway for network traffic to a server, the network interface card (NIC) is an ideal place to incorporate diverse network functionality, such as traffic control, protocol offloading, and virtualization. However, the slow evolution and inherent inflexibility of NIC hardware have failed to support evolving protocols, emerging applications, and rapidly changing system/network architec...

Obtaining traffic load on internal links of the network is crucial for network management and control. Though collecting can be available on each link, such as applying traditional SNMP scheme, the approach would be expensive because it may cause heavy processing load and sharply degrade the throughput of the core routers in high-speed IP backbone. Then monitoring merely at the edge and estimat...

Ad hoc networks were initially conceived as stand-alone entities without connection to any external infrastructure. A possible solution to give access to ad hoc terminals to the Internet trough conventional WLAN networks is described in the mobile multi-gateway support. This scheme proposes to utilize a mobile node within the transmission range of the WLAN access point as a connecting gateway b...

In this paper, a packet scheduling framework is proposed for LTE-Advanced downlink transmission. The proposed framework adds the new functionality of an adaptive TD scheduler with built-in congestion control to the existing conventional quality of service (QoS) aware packet scheduling algorithms. It optimizes multiuser diversity in both the time and frequency domains by jointly considering the ...

The Tor anonymity network depends on volunteers to operate relays, and might offer higher bandwidth with lower response latencies if more users could be incentivized to contribute relay bandwidth. We introduce TEARS, a system rewarding useful service with traffic priority. TEARS audits relays and rewards them with anonymous coins called Shallots, proportionally to bandwidth contributed. Shallot...

This paper describes INSEE, a simulation framework developed at the University of the Basque Country. INSEE is designed to carry out performance-related studies of interconnection networks. It is composed of two main modules: a Functional Simulator of Interconnection Networks (FSIN) and a TRaffic GENeration module (TrGen), together with several other modules that extend INSEE’s functionality. T...

The proliferation of mobile wireless devices enables or magnifies several privacy threats that traditional link layer confidentiality mechanisms, such as payload encryption, do not protect against: user tracking, profiling, and traffic analysis. For example, it is well known that the exposure of long-lived, unique device addresses can be used to track users over time. Although these addresses c...