A cognitive radio network with classified Secondary Users (SUs) is considered. There are
two types of SU packets, namely, SU1 packets and SU2 packets, in the system. The SU1 …

In this paper, we consider a cognitive radio network with multiple Secondary Users (SUs).
The SU packets generated from the SUs are divided into SU1 packets and SU2 packets, and …

In this paper, we consider a cognitive radio network with multiple Secondary Users (SUs).
The SU packets are divided into SU1 packets and SU2 packets, and the SU1 packets have …

We propose an access control scheme in cognitive radio networks with prioritized
Secondary Users (SUs). Considering the different types of data in the networks, the SU …

In this paper, in order to reduce possible packet loss of the primary users (PUs) in cognitive
radio networks, we assume there is a buffer with a finite capacity for the PU packets. At the …

In cognitive radio networks (CRNs), multiple secondary users may send out requests
simultaneously and one secondary user may send out multiple requests at one time, ie …

In usual cognitive radio networks with buffer settings, secondary user packets that are
interrupted by primary user packets will return to the SU buffer for later retransmission. But …

In cognitive radio networks, the packet transmissions of the secondary users (SUs) can be
interrupted randomly by the primary users (PUs). That is to say, the PU packets have …

In traditional cognitive radio networks (CRNs), users are generally divided into two
categories: primary users (PUs) and secondary users (SUs). The transmission rates of …

In this paper, we focus on a centralized spectrum access strategy in a cognitive radio
network, in which a single licensed spectrum with one primary user (PU) and several …