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In this paper, we discuss the issues of the QoS routing for group communications in Cognitive Radio (CR) networks. The problem of our concern is: given a CR ad hoc network and a QoS group communication request, how to set up a communication connection so that the total bandwidth consumption of the communication is minimized while the QoS requirement is met. In this paper, we focus on the bandwidth...
In this paper, we discuss the causal ordering group communication for cognitive radio (CR) networks. The issue of causal ordering has been studied extensively by previous works. However, these works considered the problem at the application layer and the methods in the works incurred high communication overhead and the long latency for message delivery. In this paper, we discuss the causal ordering...
In this paper, we discuss the issues of QoS multicast routing in multi-hop Cognitive Radio (CR) networks. The problem of our concern is: given a CR network and a QoS multicast request, how to set up a multicast connection so that the total bandwidth consumption of the multicast is minimized while the QoS requirements are met. We propose a distributed protocol which uses shortest path tree as the multicast...
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