This paper evaluates the performance evaluation of interaction between Transport and the MAC layer protocols operating in a mobile adhoc network. In Adhoc networks, certain QoS parameters like error rate, delay and packet loss are increased and certain parameters like throughput and delivery ratio are decreased in Transport layer is due to MAC problems and disconnection is also possible due to ...

Introduction: Stroke imposes limitations on performing activities of daily living (ADL) and their level. Different therapeutic approaches are used for improving the level of performance after a stroke. This study was performed with the aim of evaluating the effect of group-based occupational therapy on improving the performance of ADL and satisfaction of its performance in patients with chronic...

Re-use of existing widely explored Medium Access Control (MAC) schemes, like the well-known Aloha scheme, is not applicable in ad hoc networks where the transmissions of the users can be normally sensed by only a fraction of the users present in the network. Therefore, estimations of the network traffic load are not possible anymore. Here, an adaptive probabilistic policy for medium access cont...

1 This work has been partially supported by a grant from the German Ministry for Research and Education (BMB+F) within the project “Communication and Mobility by Cellular Advanced Radio (COMCAR)” and by the European Commission within the IST project “Dynamic Radio for IP-Services in Vehicular Environments (DRiVE)”. Abstract Future wireless communication systems will be characterised by an integ...

During the last few years there has been a rapid development in mobile ad hoc networks (MANETs). To make the operations of a MANET more efficient, one approach is to construct and maintain a control structure. Clustering is such a natural approach to achieving local independent operations and control functions efficiently. In this paper we propose a weightbased distributed Size-bounded Multi-ho...

Permission-role assignments (PRA) is one important process in Role-based access control (RBAC) which has been proven to be a flexible and useful access model for information sharing in distributed collaborative environments. However, problems may arise during the procedures of PRA. Conflicting permissions may assign to one role, and as a result, the role with the permissions can derive unexpect...

Mobility of ubiquitous systems offers the possibility of using the current context to infer information that might otherwise require user input. This can either make user interfaces more intuitive or cause subtle and confusing mode changes. We discuss the analysis of such systems that will allow the designer to predict potential pitfalls before the design is fielded. Whereas the current predomi...

In this paper, we define a new “location area” for location management in wireless networks. Location management schemes comprise of location update and terminal paging. Efforts to introduce efficient location update schemes results in increased paging costs and vice-versa. Dynamic Location Area (LA) schemes, which are per-user and mobility pattern based were proposed to overcome the problems o...

Since 1970, centralized traffic-control systems have been installed to meet the demand of increasing mobility. Thus, roads can be used much more flexibly. Nevertheless, resources for centralized systems lack scalability, and the maintenance of such systems involves high cost and much effort. The significant and rapidly increasing improvements in communication and information technology, as well...

The proposed 3GPP’s 5G Next-generation (NextGen) Core architecture (5GC) enables the ability to introduce new user and control plane functions within the context of network slicing to allow greater flexibility in handling of heterogeneous devices and applications. In this paper, we discuss the integration of such architecture with future networking technologies by focusing on the information ce...