The purpose of writing this article is to present and study femtocellular technologies for mobile cellular networks. With the introduction fourth 4G-LTE fifth 5G generation systems, term femto cell began be strongly mentioned. Femto cells are very small that provide service users with a home base station connect telecommunications operator's network. femtocell mainly looking ever higher data ra...

In this paper we have considered a wireless mobile network with data/voice traffic. The paper, considered two type of channel assignment (1) with guard channel (2) without guard channel. In cellular mobile system, radio channels are very limited and mobility of mobile terminal occurs a phenomenon called handoff. Handoff is defined as process of transferring an ongoing call or data session from ...

Present generation cellular networks provide different services to the mobile users. The movement of the users is highly dependent on individual characteristics. To offer an uninterrupted service to the mobile users, continuous tracking of its location is very important. This can be achieved by the proper location management schemes. In this paper, a prediction-based location management scheme ...

Multi-hop cellular networking models that integrate the characteristics of both cellular and mobile ad hoc networks have received increasing attention. Finding an available relaying path is a critical prerequisite for the success of the multi-hop cellular networks. Most works use signal strength, path length and power consumption as routing criteria to select a relaying path for a mobile node r...

Although satellite and cellular communication advances have enabled users of mobile computers the ability to access information regardless of location, it introduces new problems for transaction management in distributed database systems. Traditional transaction mechanisms and criteria have to be adjusted to accommodate the limitations of a mobile computing environment. Data replication is an e...

In this paper a view of the European developments in the field of wireless broadband multimedia communications is given following two lines: on one side evolution in Second and Third Generation of mobile communications; on the other side evolution of multimedia data communications. This two evolutions will merge into a new concept of communications: the Mobile Broadband Systems, or fourth gener...

Background In addition to their widespread applications in various fields, cellular phones have some inappropriate social consequences, including psychosocial addiction, degradation of values, reduced social interactions, early maturity and endangering the psychological...

Wireless hybrid networks have become quite popular with the evolution of several devices with multiple networking interfaces. Each of these interfaces (and the associated networks) have significantly different characteristics, hence it is important to understand how best to utilize and operate in the presence of multiple networks. Smartphones are a popular example of devices with multiple netwo...

Paging is an important mechanism for network bandwidth efficiency and mobile terminal battery life. It has been widely adopted by mobile networks, such as cellular networks, WiMax, and Mobile IP. Due to certain mechanisms for achieving paging efficiency and the convergence of wireless voice and data networks, the paging channel is vulnerable to inexpensive DoS attacks. To mitigate these attacks...

In the last two decades, the mobile communications technologies and the Internet have grown almost exponentially, reaching a significant numbers of subscribers around the world. The mobile cellular service got a very large growth of users along with the increase of mobile data services. On the other hand, the Internet provides a great opportunity for users to access the information via fixed an...