Balanced media access methods for wireless networks

1998 ◽  
Author(s):  
Timucin Ozugur ◽  
Mahmoud Naghshineh ◽  
Parviz Kermani ◽  
C. Michael Olsen ◽  
Babak Rezvani ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Media Access ◽  
Access Methods

scholarly journals Intrusion Detection System for Misbehaving WLAN Users

2012 ◽  
Vol 1 (1) ◽  
pp. 55-81
Author(s):  
سامي العيساوي، ورضا سلامة، وعبدالرحمن الطلحي سامي العيساوي، ورضا سلامة، وعبدالرحمن الطلحي
Keyword(s):  
Wireless Networks ◽  
Intrusion Detection ◽  
Wireless Lan ◽  
Detection System ◽  
Decisive Role ◽  
Local Area ◽  
Media Access Control ◽  
Mac Layer ◽  
Media Access ◽  
Broadband Internet

Wireless networks in the lives of people at work, at home, and in public places, plays a decisive role. Given the widespread demand for wireless networks, providers deploy wireless local area networks (WLAN) to provide access to broadband Internet Within the range of a public wireless LAN hotspot such as in airports or hotels, users can access their e-mails and browse the Internet either for free or, most often, against a fee. However, as the number of users rises, so does the risk that users may misbehave. Misbehaving users can to a large extent increase their share of bandwidth at the expense of other paid users by slightly modifying the driver of the network adapter. As the use of such networks grows, users will demand secure yet efficient, low-latency communications. Intruders’ detection is one of the key techniques that can be used to protect a network against outsiders. Many Intrusion Detection Systems (IDSs) have been designed for wired networks. Unfortunately, most of these IDSs do not give the expected results when used with wireless networks and are especially poor at addressing the Media Access Control (MAC) layer problem. In this sheet, we present the design and implementation of an IDS tool that is chosen for WLANs and addresses misbehavior at the MAC layer properly. Keywords: IDS, WLAN, MAC layer, Misbehavior

Interference Minimization and Dynamic Sub-Carrier Allocation in Broadband Wireless Networks

2014 ◽  
Vol 3 (3) ◽  
pp. 1-15
Author(s):  
Ju Wang ◽  
Jonathan Liu
Keyword(s):  
Wireless Networks ◽  
Numerical Experiments ◽  
Control Method ◽  
Channel Allocation ◽  
Base Station ◽  
Allocation Problem ◽  
Broadband Wireless ◽  
Access Methods ◽  
Distributed Approach ◽  
Distributed Channel Allocation

Efficient channel allocation is the key to fully exploit the signal diversity presented in the multi-carrier physical link in today's broadband wireless access networks. There are mounting evidences that the 4G and future-generation systems will take advantage of two opposite types of access methods, one using centralized control method and the other using a distributed approach. The authors study the distributed channel allocation problem in this article, formulated as a non-linear optimization problem, in broadband wireless networks. The signal properties of the multi-carrier radio interface in 3G and 4G networks are discussed to comprehend the complexity of the channel allocation problem. The authors propose a novel distributed heuristic algorithm based on the particle-swarm searching method. The distributed approach allows user stations to quickly switch sub-carriers with minimum intervention from the base station. The work presented in this paper shows an effective method to allocate a large number of channels while minimizing the possible interference. Extensive numerical experiments are conducted to evaluate several versions of distributed channel allocation algorithm for these new problem settings. The authors' results show that PSO-based method converges quickly in all our numerical experiments despite the high-dimensional searching space. The proposed technologies will eventually allow the true mobile steaming video/audio experience anywhere and anytime, which will have the huge impact to business, entertainment and people's quality of life.

scholarly journals Energy Efficient Quality Assurance MAC Protocols in WSN

2019 ◽  
Vol 9 (2) ◽  
pp. 2090-2097
Keyword(s):  
Data Transmission ◽  
Energy Efficient ◽  
Mac Protocol ◽  
Data Communication ◽  
Mac Protocols ◽  
Sensor Nodes ◽  
Network Simulator ◽  
Media Access ◽  
Access Methods ◽  
New Research

The key aim of the proposed research is to perform an analysis of various QoS aware MAC protocols for WSN based on simulation and literature both. The proposed work represents the designs and methodologies of different MAC protocols. And also classify the various MAC protocols based on media access and allocation of schedule for communication among the sensor nodes. The proposed work performs the analysis by designing, developing and analyzing various quality aware MAC protocols for Wireless sensor network. This paper describes the detailed analysis of different channel access methods of a network. It also depicts detail algorithms of SMAC and describes the procedure of data communication in TMAC, BMAC, and ZMAC. Also, simulate the SMAC and TMAC protocols to analyze energy efficiency as a QoS parameter. The simulation of SMAC and TMAC data transmission is done in network simulator 3 by using various network parameters. In this research the QoS parameters like Energy, Throughput, delay and, latency are analyzed by simulation and literature respectively. A new research always starts with analysis of existing one. So, Analysis of different MAC is useful for the WSN research community to propose and develop a QoS aware MAC protocol.

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