| Wireless communication network is fast growing and exciting research area that has attracted considerable research attention in the domain of control of communication network. This has been accelerated by the tremendous technological advancements in the development of low power RF modules, controllers/processors, and sensors. Design of efficient wireless communication network needs number of parameters of the network to be controlled like power, congestion, admission, traffic, and error. Many standard algorithms are available to control all these parameters. This thesis is focused on the congestion control, admission control and power control using different methods. For congestion and admission control, discrete time sliding mode control approach has been discussed in this thesis and for power control; A-MAC protocol has been used. The considerable amount of research efforts has been put in many applications of sliding mode control for various electro-mechanical systems. SMC based control is not much explore in the area of communication networks. This thesis has uncovered the application of discrete time sliding mode control to control congestion and admission in the wireless network. Here communication network term is considered as a wireless Ad-hoc network or wireless sensor network. Chattering effect is one of the issues that appear in sliding mode control. The thesis has also focused on the method to reduce chattering effect in the controller. Power management is very critical issue in all kinds of battery operated communication network. Target of any battery power management algorithm is to increase the lifetime of the network. A-MAC protocol has been proposed in this thesis to address power related issues, which contain a combination of adaptive duty cycling, talk time estimation and buffering method.;Key Words: Multirate output feedback, discrete time sliding mode control, congestion control, chattering effect, admission control, A-MAC. |
