Informatics Publishing Limited

S. Kanaga Suba Raja ¹, T. Jeba Rajan ², D. C. Joy Winnie Wise ³, M. Vivekanandan ¹, V. Balaji ¹

Affiliations
1 Easwari Engineering College, Chennai, IN
2 Kings Engineering College, Sriperumbudur, Chennai, IN
3 Alpha Engineering College, Chennai, IN

Abstract

Energy conservation in broadband wireless networks is possible by the provision of the sleep mode incorporated in the design. This allows the mobile networks and towers to stem power loss when working or idle. Many energy saving options are offered by Mobile WiMAX or IEEE 802.16e to suit various network grids to ensure minimum power loss. The sleep mode functionality however has not been utilized in the most efficient manner to conserve power of mobile stations with multiple real-time connections. Mobile stations are also not running at optimum levels leading to power loss due to inefficiency. In this study we have two models to save and conserve energy for real-time communications in Mobile WiMAX systems. These algorithms not only cut power loss but also upgrade and guarantee service quality of real-time networks. Simulated testing shows dramatic performance standards with these models outperforming conventional set ups.

 

Keywords

AS, IEEE 802.16e, OFDM, QoS, RTPS.

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A. Jayanand ¹, T. Jeba Rajan ²

Affiliations
1 Manonmaniam Sundaranar University, IN
2 Kings Engineering College, Chennai, IN

Abstract

Mobile Ad-Hoc Network (MANET) is often vulnerable to security threats due to its features of open medium, dynamic changing topology, cooperative algorithms, lack of centralized monitoring and management point, and often lack of a clear line of defense. As a result, many attacks have been found even at the routing level, which can disrupt the functioning of a MANET. Several routing protocols are designed to ensure routing security. But even today, security remains as a major issue in MANETs. In this paper, a new scheme with a feedback mechanism is suggested to improve the security of existing multi-path routing protocols. This scheme is found to improve the security against sinkhole attacks and wormhole attacks, which are the major threats to MANET routing security.

Keywords

Attacks on Networks, MANETs, Mobile Ad-Hoc Networks, Multi-Path Routing, Routing Protocols, Secure Network Protocol.

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