147 research outputs found
Unidirectional Lightweight Encapsulation With Header Compression For IP Based Satellite Communication Over DVB-S.
No full textThe Multi-Protocol Encapsulation (MPE) is a standard
method for encapsulating IP packets into MpEG-2 TS frames. However MPE has some disadvantages in simplicity and efficiency to support next generation network
ABSTRACT INTEGRATING PUBLIC KEY CRYPTOGRAPHY INTO THE SIMPLE NETWORK MANAGEMENT PROTOCOL (SNMP) FRAMEWORK
No full textwidely used for remote network resource management due to its simplicity and distributed management capabilities. However, the increased use of SNMP to manage and control network resources such as routers and servers also introduces security risks whereby unauthorized users can retrieve information or modify the given resources remotely. The basic security framework introduced in SNMPv3 only specifies the use of symmetric cryptography techniques to address the security concerns. This paper outlines a new methodology, Public-Key Security Model (PSM), to integrate public cryptography techniques into the SNMP framework. It extends the existing User-based Security Model (USM) to include per-session authentication and encryption keys, thus enhancing the security of the SNMPv3 protocol. I
Cognitive Radio-Based Power Adjustment For Wi-Fi.
No full textIn this paper the idea of using Cognitive Radio (CR) techniques to optimize the access point (AP) configuration for
IEEE 802.11 WLAN was exploited. In particular, we address the issue of optimizing AP transmission power and channel allocation within the network
Multiple LAN Internet Protocol Converter (MLIC) for Multimedia Conferencing
No full textMultimedia conferencing over multiple Local Area Networks (LAN), or across a Wide Area Network requires the use of efficient multicast servers in order to function correctly. This paper presents a proposed Multiple LAN Internet Protocol Converter (MLIC) algorithm currently being implemented by the Network Research Group and Multimedia Research Labs Sdn. Bhd. for use with multimedia conferencing, to interconnect multiple wide area LANs using IP protocols. This proposed multimedia multicast router will allow multicast based multimedia traffic over ATM Networks like TEMAN (Testbed Environment for Malaysia Multimedia Applications and Networking) and APAN (Asia Pacific Advanced Networks). Existing wide-area multimedia conferencing architectures are designed using proprietary systems and routers for wide area multicasting. With MLIC, a distributed approach using off the shelf hardware is proposed. MLICs maintains the full duplex interaction between active multimedia conferencing clients via ..
Adaptive and fuzzy approaches for nodes affinity management in wireless ad-hoc networks
No full textIn most of the ad-hoc routing protocols, a static link lifetime (LL) is used for a newly discovered neighbors. Though
this works well for networks with fixed infrastructures, it is inadequate for ad-hoc networks due to nodes mobility and frequent
breaks of links. To overcome this problem, routing protocols with estimated LL using nodes affinity were introduced. However,
these protocols also used the static estimated LL during the connection time. In contrast to that, in this paper two methods are
presented to estimate LL based on nodes affinity and then continually update those values depending on changes of the affinity.
In the first method, linear function is used to map the relationship between the signal strength fluctuation and LL. In the second
method, fuzzy logic system is used to map this relationship in a nonlinear fashion. Significance of the proposed methods is
validated using simulation. Results indicate that fuzzy method provides the most efficient and robust LL values for routing
protocols
Manufacturing Automation Protocol And Local Area Networks For Multiple Mobile Robot Systems
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