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Mobile users often connect through WiFi access points and frequently find themselves behind NATs that are built into common off-the-shelf home access points or enterprise wireless deployments. Punching a hole through the NATs to establish a P2P connection can be a challenging task for lay users. We present our system, ANT, that utilizes Audio signaling for NAT Traversal. With ANT, unlike other NAT...
In the absence of end-to-end quality of service (QoS), overlay routing has been used as an alternative to the default best effort Internet routing. Using end-to-end network measurement, the problematic parts of the path can be bypassed, resulting in improving the resiliency and robustness to failures. Studies have shown that overlay paths can give better latency, loss rate, and TCP throughput. Overlay...
In this paper, QoS-guaranteed path selection algorithm for service composition is described. A heuristic algorithm, K-closest pruning (KCP), is used to solve the problem of multi-constraint service path selection for SON in polynomial time. The main feature of this algorithm is that the path selected by this algorithm meets all the QoS requirements specified by the user/application. The main idea...
Probabilistic packet marking is a general technique which routers can use to reveal internal network information to end-hosts. Such information is probabilistically set by the routers in headers of regular IP packets on their way to destinations. A number of potential applications have been identified, such as IP traceback, congestion control, robust routing algorithms, dynamic network reconfiguration,...
Selective packet dropping policies have been used to reduce congestion and transmission of traffic that would inevitably be retransmitted. For data applications using best-effort services, packet dropping policies (PDPs) are congestion management mechanisms implemented at each intermediate node that decide, reactively or proactively, to drop packets to reduce congestion and free up precious buffer...
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