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We propose a Disruption Aware Routing and link Scheduling (DARS) scheme for multi-hop cognitive radio networks. The objective is to minimize disruptions to secondary user communication sessions due to channel switching and the resource consumption. We formulate the problem into an optimization problem and develop an efficient algorithm to solve the problem. The main idea is to monitor the data rate...
With developing on cloud computing, data center networks have received great attention recently. In order to support high availability and bandwidth, data center networks are usually designed based on peak traffic. Unfortunately, peak traffic does not happen all the time. This causes unnecessary energy wastage and leads to low network utilization. We aim to minimize the power usage of data center...
The Locator/ID Separation Protocol (LISP) is being standardized in IETF, which separates the IP address functionality into routing locators (RLOC) and endpoint identifiers (EID). LISP is applicable for instant Virtual Private Network (VPN) services because it has IP tunneling features. However, there are two main issues with application to VPN. One is a Map server/Map resolver (MS/MR) basically allows...
Cellular networks provide a range of communication services and are the principal wireless technology for domestic and business users. However, in cellular networks, an accident or a storm or a malicious action may cause a base station to fail and so be unable to provide radio coverage to sections of users. Such base station failures also might result in user congestion to nearby operational base...
A critical problem in wireless sensor networks is to maximize their lifetimes. Data aggregation is an effective method to reduce redundant data and minimize the overall energy consumption. This method requires data to be delayed and processed in their paths to the sink node, so it causes extra time delay to the networks. This paper studies the aggregation node selection problem in sensor networks...
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