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Mobile ad hoc networks (MANET) consist of some mobile nodes, but do not have the requirement of infrastructure or centralized management. As a result, there may have a lot of critical issues occurred in mobile ad hoc networks, such as the security of data transmission, routing, and so on. The misbehavior of nodes which are due to selfish or malicious may lead to the losing of packets, rejecting of services, etc. In this paper, a new scheme based on reputation, bandwidth and hop count is proposed to solve these problems. This scheme employs the fuzzy logic to perform the routing path decision in order to choose the best and feasible routing path. Finally, the SMPL, a simulation tool, is utilized to estimate the efficiency of the proposed scheme. From the results, the proposed scheme is superior to other existing schemes. [ABSTRACT FROM AUTHOR]

Next-generation wireless networks will provide information transmission in Heterogeneous Wireless Networks. It not only offers a variety of wireless access services for integrating different wireless networks, but also takes into account the high bit rate, the QoS management, and the friendly mobility. In this article, the scheme of choosing the suitable network with the best service for a mobile terminal in a heterogeneous wireless network is studied. A new scheme based on fuzzy logic is proposed to employ the important traffic criteria, including bandwidth, dropping rate, blocking rate, signal, and velocity. Finally, the simulation is used to investigate the performance of proposed schemes. The simulation results show that the proposed schemes have better performance than conventional schemes. Keywords: Fuzzy logic, mobility management, heterogeneous networks, 4G. [ABSTRACT FROM AUTHOR]