The future developments of the wireless sensor networks and its applications demands for the effi... more The future developments of the wireless sensor networks and its applications demands for the efficient and secure communication. For the solution of efficient and reliable security needs cryptography algorithms provides good solutions. For providing reliable security schemes mainly data confidentiality now-a-days key management is used. This paper provides a review over cryptography schemes being used to deal with security issues of wireless sensor networks. ARTICLE HISTORY
Seamless and reliable switching across different technologies is the basic requirement of heterog... more Seamless and reliable switching across different technologies is the basic requirement of heterogeneous wirelessnetworks. In order to be always best connected for various applications, the network selection procedure in heterogeneousenvironment during vertical handover decision is intended to choose the most suitable network for mobile user. In this paper fuzzyrule based handover decision scheme is proposed that will help to choose the correct network among WLAN, WWAN andCellular network and also finds the necessity of handoff. Fuzzy logic concept is applied to find necessity of handoff and forhandoff decision by considering all the possible network parameters such as RSS, bandwidth, user preference, MS-velocity, MSAPdistance, delay, cost, security and no. of users. To calculate the handoff factor four fuzzy logic controllers are designed inparallel fashion which reduces the number of rule and system complexity. In this work only 27 rules are used instead of 39rulesthat are needed f...
In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the ma... more In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the manner in which these nodes move. In this work, performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This performance evaluation was done for AOMDV (Ad-hoc On-demand Multipath Distance Vector) routing protocol for different mobility models in MANET and later compared with AODV (Ad-hoc On-demand Distance Vector) routing protocol.
Quality of service (QoS) is the mechanism of the network to provide different service level to a ... more Quality of service (QoS) is the mechanism of the network to provide different service level to a different traffic type as business need. The main objective of this work is to improve QoS in network by reducing link load and bandwidth consumption. It uses a routing scheme that satisfies expected demand and minimized link utilization of system. It works on reliability by limited usage of bandwidth. Results are presented to demonstrate the effectiveness of system. The efficient QoS model provides better control and administration of network traffic. Solution of routing problem with help of proposed model allows providing the distribution of traffic between sourceand destinationnode so that delays along every path are equal. ARTICLE HISTORY Received 17 October 2016 Accepted 15 November 2016 Available online 30 December 2016
International Journal of Advanced Research in Computer Science, 2017
Energy efficiency is one of the major concerns in next generation wireless networks. As the user ... more Energy efficiency is one of the major concerns in next generation wireless networks. As the user moves in the heterogeneous environment of different technologies, terminal power consumption increases which results in reduction of battery life time of mobile terminal. The main objective of this paper is to gather the different approaches suggested by various researchers for energy efficient vertical handoff.
Seamless connectivity is need of next generation wireless network (NGWN). WLAN, WiMAX and UMTS ar... more Seamless connectivity is need of next generation wireless network (NGWN). WLAN, WiMAX and UMTS are the main components of wireless network connected in integrated manner. These networks, each with its own characteristics, connected to a common IP-based core network to provide mobile user with seamless connectivity. One of the major issues for the converged heterogeneous networks is to provide seamless connectivity with QoS support. In this paper we integrated WLAN and UMTS network and evaluated QoS parameters for Video Conferencing and FTP applications.
In wireless technologies, there are various types of networks having different parameters and the... more In wireless technologies, there are various types of networks having different parameters and their specifications and thus having different QoS (Quality of Service). When the MS moves from one network to another network, process is known as vertical handoff. In this paper we designed the simulation model having eight parameters for vertical handoff between WWAN and cellular network with the help of Fuzzy Logic Tool Box, which is also named as FQDA (Fuzzy Logic Quantitative Decision Algorithm) and Simulink of MATLAB platform. The results show the improved performance and reduced complexity. In this work only 81 rules have been used as compared to 6561 rules needed for 8 attributes. This modified fuzzy method also result in lesser number of handoffs as compared to traditional method. KeywordsFQDA, QoS, VHO, WWAN.
The aim of next generation wireless network (NGWN) is to integrate different wireless access tech... more The aim of next generation wireless network (NGWN) is to integrate different wireless access technologies such as WLAN, WiMAX, UMTS etc., each with its own characteristics, into a common IP-based core network to provide mobile user with seamless connectivity. One of the major issues for the converged heterogeneous networks is to provide seamless connectivity with QoS support. In this paper we simulated various wireless networks (WLAN, WiMAX and UMTS) for various applications and evaluated their performance as individual as well as in integrated mode.
In this work, a performance analysis of various types of wireless networks such as WLAN, WiMAX an... more In this work, a performance analysis of various types of wireless networks such as WLAN, WiMAX and UMTS has been done with many applications such as voice, video and ftp, handover analysis is also done in individual networks using OPNET simulator. Simulation results show that the WiMAX network’s performance is good as compared with WLAN and UMTS. WLAN ranked first in maximum throughput and minimum delay followed by WiMAX and UMTS networks.
OFDM facilitates the possible growth of wireless communication for high quality multimedia servic... more OFDM facilitates the possible growth of wireless communication for high quality multimedia services, high speed internet access, as well as data, video and voice transmission at higher rates. This multicarrier modulation technique is limited to 4G mobile communication; it will also be implemented in the 5G communication system.1 It also provides a possible solution to multipath frequency selective fading effect. However, the problem of ISI occurs due to causes of multipath propagation, dispersive, noisy and fading channels present in the original signal in OFDM system. If the ISI is not mitigated properly, then decision device may interpret the logic wrongly.2 In this paper, ANN is proposed and is implemented after decoder of an OFDM system and this approach minimizes the error. Further, this proposed technique is compared to conventional ISI reduction techniques. The paper constitutes: Section II, which deals with relevant literature; Section III proposed, OFDM system description; ...
A Mobile Ad-hoc Network is a network without any wired infrastructure and the all nodes are free ... more A Mobile Ad-hoc Network is a network without any wired infrastructure and the all nodes are free to move throughout the network. As there is no wired infrastructure in the network when the nodes moves through the network it leads to change the network topology and also the route of link will be changed. This change of topology and route of link highly affect the performance of mobile ad-hoc network. Further mobility of nodes affects the performance of network along with the manner in which these nodes move. Thus performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This paper presents a survey of various techniques which have been developed and suggested to improve the performance of MANET in different routing protocols with various mobility models.
International journal of scientific research in science, engineering and technology, 2017
Heterogeneous wireless networks comprise of variety of wireless technologies integrated to satisf... more Heterogeneous wireless networks comprise of variety of wireless technologies integrated to satisfy user’s demand. Vertical handover algorithm is the need of present scenario to select optimum network among the available networks. Multiple attribute decision making based handover algorithm are capable to select optimum network having requisite set of context parameters. Context information related to quality of service parameters offered by networks varies with movement of mobile terminal. Thus, context and movement aware has been designed with vector normalized preferred performance based VIKOR method (CMV-VPP). The performance has been analyzed for conversational traffic and compared with other available normalization methods as MAX normalization based VIKOR (CMV-MAX) and Vector normalization based VIKOR (CMV-VEC) methods. Simulation results show that the proposed algorithm performs better in terms of network selection and number of handovers as compared with other methods used in ...
In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the ma... more In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the manner in which these nodes move. In this work, performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This performance evaluation was done for AOMDV (Ad-hoc On-demand Multipath Distance Vector) routing protocol for different mobility models in MANET and later compared with AODV (Ad-hoc On-demand Distance Vector) routing protocol.
Advances in systems science and applications, 2017
Universal filter multi carrier (UFMC) is one of the promising multi carrier modulation techniques... more Universal filter multi carrier (UFMC) is one of the promising multi carrier modulation techniques for next generation wireless communication systems. UFMC seems to be most attractive because it provides better sub carrier separation like FBMC (Filer Bank Multi Carrier) and less complexity like OFDM (Orthogonal Frequency Division Multiplexing). But this technique suffers from limitation of higher Peak to Average Power Ratio (PAPR). In this paper a Hybrid PAPR reduction technique SC- UFMC have been proposed using SLM (Selective Mapping) and Clipping. The performance of proposed technique is evaluated for various design parameters including filter length, FFT size and Bits per sub carrier. The simulation results show that hybrid technique provides better PAPR reduction as compared with conventional SLM and clipping techniques.
Mobile WiMAX(Worldwide Interoperability for Microwave Access) is the most recent technology that ... more Mobile WiMAX(Worldwide Interoperability for Microwave Access) is the most recent technology that is used for broadband wireless access over long distances. Handoff is necessary in order to support mobility and continuous network connectivity in Mobile WiMAX. Handoff is the process of changing the channel (frequency, time slot, spreading code, or combination of all these parameters) associated with the current connection while a call is in progress. With increasing demand for wireless applications and data rates associated with it, the use of WiMAX is explored as a wireless technology for large deployments. This paper is presented here an overview of Handoff and Mobile WiMAX, Relay Technology, its features and applications.
International Journal of scientific research and management, 2014
There are various types of networks in wireless technologies, having different parameters and the... more There are various types of networks in wireless technologies, having different parameters and their specifications and thus having different QoS (Quality of Service). So for moving the MS from one network to another network vertical handoff is required. In this paper we designed the simulation model having seven parameters for vertical handoff between WWAN and cellular network with the help of Fuzzy Logic Tool Box, which is also named as FQDA (Fuzzy Logic Quantitative Decision Algorithm) and Simulink of MATLAB platform. The results show the improved performance and reduced complexity. In this work only 81 rules have been used as compared to 2187 rules needed for 7 attributes.This modified fuzzy method also result in lesser number of handoffs as compared to traditional method.
Movement of mobile terminal in overlapping areas of different wireless communication networks req... more Movement of mobile terminal in overlapping areas of different wireless communication networks require seamless handover for service continuation. Moreover quality of service (QoS) offered by wireless networks must match with the application requirements of user. Multiple attributes decision making (MADM) based handover algorithms are able to suggest optimum network among the available networks with requisite services. Context attributes of available networks varies dynamically with the movement of user and this necessitate the inclusion of location updates of user. In this paper movement aware handover algorithm has been designed with vector normalized preferred performance based VIKOR method (MV-VPP). Four simulation scenarios have been designed to analyze the performance of MV-VPP in four traffic classes. The simulation results show that proposed method is effective for application based network selection in heterogeneous
Due to integration of heterogeneous wireless technology demand of seamless communication is incre... more Due to integration of heterogeneous wireless technology demand of seamless communication is increases. Various approaches have been proposed for network selection in vertical handoff. Here we propose a new energy efficient network selection algorithm by considering three networks (CDMA, WIMAX &WLAN) for network selection .In this work, based on the power consumption, traffic class and current battery level of each network interface card , the mobile terminal lifetime is to be calculated. As the lifetime of mobile terminal decreases, we reduce the number of attributes and networks by eliminating the particular network form network list. AHP (Analytic hierarchical process) and TOPSIS (Technique for order of Preference by similarity to the Ideal Solution) are used for network selection. Keywordspower consumption; lifetime; Heterogeneous wireless network; Network selection ;MADM. __________________________________________________*****_________________________________________________
The future developments of the wireless sensor networks and its applications demands for the effi... more The future developments of the wireless sensor networks and its applications demands for the efficient and secure communication. For the solution of efficient and reliable security needs cryptography algorithms provides good solutions. For providing reliable security schemes mainly data confidentiality now-a-days key management is used. This paper provides a review over cryptography schemes being used to deal with security issues of wireless sensor networks. ARTICLE HISTORY
Seamless and reliable switching across different technologies is the basic requirement of heterog... more Seamless and reliable switching across different technologies is the basic requirement of heterogeneous wirelessnetworks. In order to be always best connected for various applications, the network selection procedure in heterogeneousenvironment during vertical handover decision is intended to choose the most suitable network for mobile user. In this paper fuzzyrule based handover decision scheme is proposed that will help to choose the correct network among WLAN, WWAN andCellular network and also finds the necessity of handoff. Fuzzy logic concept is applied to find necessity of handoff and forhandoff decision by considering all the possible network parameters such as RSS, bandwidth, user preference, MS-velocity, MSAPdistance, delay, cost, security and no. of users. To calculate the handoff factor four fuzzy logic controllers are designed inparallel fashion which reduces the number of rule and system complexity. In this work only 27 rules are used instead of 39rulesthat are needed f...
In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the ma... more In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the manner in which these nodes move. In this work, performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This performance evaluation was done for AOMDV (Ad-hoc On-demand Multipath Distance Vector) routing protocol for different mobility models in MANET and later compared with AODV (Ad-hoc On-demand Distance Vector) routing protocol.
Quality of service (QoS) is the mechanism of the network to provide different service level to a ... more Quality of service (QoS) is the mechanism of the network to provide different service level to a different traffic type as business need. The main objective of this work is to improve QoS in network by reducing link load and bandwidth consumption. It uses a routing scheme that satisfies expected demand and minimized link utilization of system. It works on reliability by limited usage of bandwidth. Results are presented to demonstrate the effectiveness of system. The efficient QoS model provides better control and administration of network traffic. Solution of routing problem with help of proposed model allows providing the distribution of traffic between sourceand destinationnode so that delays along every path are equal. ARTICLE HISTORY Received 17 October 2016 Accepted 15 November 2016 Available online 30 December 2016
International Journal of Advanced Research in Computer Science, 2017
Energy efficiency is one of the major concerns in next generation wireless networks. As the user ... more Energy efficiency is one of the major concerns in next generation wireless networks. As the user moves in the heterogeneous environment of different technologies, terminal power consumption increases which results in reduction of battery life time of mobile terminal. The main objective of this paper is to gather the different approaches suggested by various researchers for energy efficient vertical handoff.
Seamless connectivity is need of next generation wireless network (NGWN). WLAN, WiMAX and UMTS ar... more Seamless connectivity is need of next generation wireless network (NGWN). WLAN, WiMAX and UMTS are the main components of wireless network connected in integrated manner. These networks, each with its own characteristics, connected to a common IP-based core network to provide mobile user with seamless connectivity. One of the major issues for the converged heterogeneous networks is to provide seamless connectivity with QoS support. In this paper we integrated WLAN and UMTS network and evaluated QoS parameters for Video Conferencing and FTP applications.
In wireless technologies, there are various types of networks having different parameters and the... more In wireless technologies, there are various types of networks having different parameters and their specifications and thus having different QoS (Quality of Service). When the MS moves from one network to another network, process is known as vertical handoff. In this paper we designed the simulation model having eight parameters for vertical handoff between WWAN and cellular network with the help of Fuzzy Logic Tool Box, which is also named as FQDA (Fuzzy Logic Quantitative Decision Algorithm) and Simulink of MATLAB platform. The results show the improved performance and reduced complexity. In this work only 81 rules have been used as compared to 6561 rules needed for 8 attributes. This modified fuzzy method also result in lesser number of handoffs as compared to traditional method. KeywordsFQDA, QoS, VHO, WWAN.
The aim of next generation wireless network (NGWN) is to integrate different wireless access tech... more The aim of next generation wireless network (NGWN) is to integrate different wireless access technologies such as WLAN, WiMAX, UMTS etc., each with its own characteristics, into a common IP-based core network to provide mobile user with seamless connectivity. One of the major issues for the converged heterogeneous networks is to provide seamless connectivity with QoS support. In this paper we simulated various wireless networks (WLAN, WiMAX and UMTS) for various applications and evaluated their performance as individual as well as in integrated mode.
In this work, a performance analysis of various types of wireless networks such as WLAN, WiMAX an... more In this work, a performance analysis of various types of wireless networks such as WLAN, WiMAX and UMTS has been done with many applications such as voice, video and ftp, handover analysis is also done in individual networks using OPNET simulator. Simulation results show that the WiMAX network’s performance is good as compared with WLAN and UMTS. WLAN ranked first in maximum throughput and minimum delay followed by WiMAX and UMTS networks.
OFDM facilitates the possible growth of wireless communication for high quality multimedia servic... more OFDM facilitates the possible growth of wireless communication for high quality multimedia services, high speed internet access, as well as data, video and voice transmission at higher rates. This multicarrier modulation technique is limited to 4G mobile communication; it will also be implemented in the 5G communication system.1 It also provides a possible solution to multipath frequency selective fading effect. However, the problem of ISI occurs due to causes of multipath propagation, dispersive, noisy and fading channels present in the original signal in OFDM system. If the ISI is not mitigated properly, then decision device may interpret the logic wrongly.2 In this paper, ANN is proposed and is implemented after decoder of an OFDM system and this approach minimizes the error. Further, this proposed technique is compared to conventional ISI reduction techniques. The paper constitutes: Section II, which deals with relevant literature; Section III proposed, OFDM system description; ...
A Mobile Ad-hoc Network is a network without any wired infrastructure and the all nodes are free ... more A Mobile Ad-hoc Network is a network without any wired infrastructure and the all nodes are free to move throughout the network. As there is no wired infrastructure in the network when the nodes moves through the network it leads to change the network topology and also the route of link will be changed. This change of topology and route of link highly affect the performance of mobile ad-hoc network. Further mobility of nodes affects the performance of network along with the manner in which these nodes move. Thus performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This paper presents a survey of various techniques which have been developed and suggested to improve the performance of MANET in different routing protocols with various mobility models.
International journal of scientific research in science, engineering and technology, 2017
Heterogeneous wireless networks comprise of variety of wireless technologies integrated to satisf... more Heterogeneous wireless networks comprise of variety of wireless technologies integrated to satisfy user’s demand. Vertical handover algorithm is the need of present scenario to select optimum network among the available networks. Multiple attribute decision making based handover algorithm are capable to select optimum network having requisite set of context parameters. Context information related to quality of service parameters offered by networks varies with movement of mobile terminal. Thus, context and movement aware has been designed with vector normalized preferred performance based VIKOR method (CMV-VPP). The performance has been analyzed for conversational traffic and compared with other available normalization methods as MAX normalization based VIKOR (CMV-MAX) and Vector normalization based VIKOR (CMV-VEC) methods. Simulation results show that the proposed algorithm performs better in terms of network selection and number of handovers as compared with other methods used in ...
In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the ma... more In Mobile Ad-hoc networks, mobility of nodes affects the performance of network along with the manner in which these nodes move. In this work, performance of Mobile ad hoc network is analyzed on the basis of routing protocol used and mobility model employed. This performance evaluation was done for AOMDV (Ad-hoc On-demand Multipath Distance Vector) routing protocol for different mobility models in MANET and later compared with AODV (Ad-hoc On-demand Distance Vector) routing protocol.
Advances in systems science and applications, 2017
Universal filter multi carrier (UFMC) is one of the promising multi carrier modulation techniques... more Universal filter multi carrier (UFMC) is one of the promising multi carrier modulation techniques for next generation wireless communication systems. UFMC seems to be most attractive because it provides better sub carrier separation like FBMC (Filer Bank Multi Carrier) and less complexity like OFDM (Orthogonal Frequency Division Multiplexing). But this technique suffers from limitation of higher Peak to Average Power Ratio (PAPR). In this paper a Hybrid PAPR reduction technique SC- UFMC have been proposed using SLM (Selective Mapping) and Clipping. The performance of proposed technique is evaluated for various design parameters including filter length, FFT size and Bits per sub carrier. The simulation results show that hybrid technique provides better PAPR reduction as compared with conventional SLM and clipping techniques.
Mobile WiMAX(Worldwide Interoperability for Microwave Access) is the most recent technology that ... more Mobile WiMAX(Worldwide Interoperability for Microwave Access) is the most recent technology that is used for broadband wireless access over long distances. Handoff is necessary in order to support mobility and continuous network connectivity in Mobile WiMAX. Handoff is the process of changing the channel (frequency, time slot, spreading code, or combination of all these parameters) associated with the current connection while a call is in progress. With increasing demand for wireless applications and data rates associated with it, the use of WiMAX is explored as a wireless technology for large deployments. This paper is presented here an overview of Handoff and Mobile WiMAX, Relay Technology, its features and applications.
International Journal of scientific research and management, 2014
There are various types of networks in wireless technologies, having different parameters and the... more There are various types of networks in wireless technologies, having different parameters and their specifications and thus having different QoS (Quality of Service). So for moving the MS from one network to another network vertical handoff is required. In this paper we designed the simulation model having seven parameters for vertical handoff between WWAN and cellular network with the help of Fuzzy Logic Tool Box, which is also named as FQDA (Fuzzy Logic Quantitative Decision Algorithm) and Simulink of MATLAB platform. The results show the improved performance and reduced complexity. In this work only 81 rules have been used as compared to 2187 rules needed for 7 attributes.This modified fuzzy method also result in lesser number of handoffs as compared to traditional method.
Movement of mobile terminal in overlapping areas of different wireless communication networks req... more Movement of mobile terminal in overlapping areas of different wireless communication networks require seamless handover for service continuation. Moreover quality of service (QoS) offered by wireless networks must match with the application requirements of user. Multiple attributes decision making (MADM) based handover algorithms are able to suggest optimum network among the available networks with requisite services. Context attributes of available networks varies dynamically with the movement of user and this necessitate the inclusion of location updates of user. In this paper movement aware handover algorithm has been designed with vector normalized preferred performance based VIKOR method (MV-VPP). Four simulation scenarios have been designed to analyze the performance of MV-VPP in four traffic classes. The simulation results show that proposed method is effective for application based network selection in heterogeneous
Due to integration of heterogeneous wireless technology demand of seamless communication is incre... more Due to integration of heterogeneous wireless technology demand of seamless communication is increases. Various approaches have been proposed for network selection in vertical handoff. Here we propose a new energy efficient network selection algorithm by considering three networks (CDMA, WIMAX &WLAN) for network selection .In this work, based on the power consumption, traffic class and current battery level of each network interface card , the mobile terminal lifetime is to be calculated. As the lifetime of mobile terminal decreases, we reduce the number of attributes and networks by eliminating the particular network form network list. AHP (Analytic hierarchical process) and TOPSIS (Technique for order of Preference by similarity to the Ideal Solution) are used for network selection. Keywordspower consumption; lifetime; Heterogeneous wireless network; Network selection ;MADM. __________________________________________________*****_________________________________________________
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