Vertical Handover Decision Modelling in Heterogeneous Wireless Network

Abstract

In essence, handover refers to a function within cellular networks and related communication systems, where it involves the transition of active data or services from one channel to another. The identical form soft handover procedure can take place in both cellular networks and satellite communication systems to guarantee uninterrupted transmission of data or services. Handover management has been the topic of research for the past decade which is now more prominent issues due to the growth of generation in wireless communication standards. The current generation of wireless communication belongs to emerging wireless platform which are referred has heterogeneous networks. This heterogeneity exists in all aspect so communication stating from the access technologies used, frequency of operation, applications supported, operating systems, multimode handheld devices etc. This heterogeneity puts forth challenges in providing seamless connectivity to the user due to the complementary characteristics of the access technologies and networks used in overlay scenario. One ofthe prominent issues isproviding good mobility management isthe basis for seam less communication. To provide an on-disruptive communication the management has to be taken care more. As this work deals with heterogeneous networks, the issue of vertical handover is of prime importance in order to achieve service continuity. The handoff parameter is controlled by ANFIS Techniques. The entire distance is monitored by RSS parameter. On the basis of RSS parameters, Channel capacity, throughput & jitter parameter is calculated. The handoff via ANFIS performed better throughput & Jitter values. For 4G Base Station, 2100MHz, 2300MHz and 2500 MHz is calculated for previous technique is calculated at 1118 meter, 1169 meter and 1215 meters respectively. Forthe proposed technique, in4G Base Station for 2100 MHz, Handover is calculated at 951 meter. Similarly, 4G Base Station for 2100 MHz, 2500 MHz, and Handover is calculated at 983 meter and 1016 meters. The proposed throughput obtained from the algorithm for frequency 2100 , 2300 and 2500 Hertz frequency is 70 % , 84 % , 92 % respectively as compared to existing throughput are 60 % , 80 % and 90 % respectively. The proposed throughput obtained from the algorithm for frequency2100 , 2300 and 2500 Hertz frequency is0.028 , 0.08, 0.003 secrespectively as compared to existing throughput are0.03, 0.01 and 0.005 respectively.

Introduction

LTE technology, using OFDMA for its radio interface, offers flexible spectrum use and high data rates suitable for 4G wireless communication with high mobility speeds, increasing the frequency of handovers. Effective handover algorithms are crucial for seamless connectivity, minimizing delays and packet loss. LTE supports two handover types: homogeneous (within same network cells) and heterogeneous (between different network types). Handovers can occur intra-eNodeB, inter-eNodeB, or inter-RAT (between different radio access technologies), involving components like MME and SGW through the S1 interface. The handover mechanism maintains continuous service by shifting active data channels and also helps mitigate interference and efficiently allocate frequency resources, especially in non-CDMA networks.

MATLAB (version 2016b) is used extensively for simulation and computational analysis, offering interactive array-based programming, toolboxes for fields like image processing and signal processing, and capabilities for high-level mathematical functions and graphics.

The proposed methodology involves designing a network with two base stations (3G and 4G) operating at 900 MHz and 1800 MHz, respectively, and analyzing handover points as a user moves between these stations, aiming to optimize coverage and handover performance.

Conclusion

Handover management has been the topic of research for the past decade which isnow more prominent issues due to the growth of generation in wireless communication standards. The present era of wireless communication is part of the next-generation wireless systems, commonly known as heterogeneous networks. This heterogeneity exists in all aspects of communication stating from the access technologies used, frequency of operation, applications supported, operating systems, multi mode hand held device sets. This heterogeneity puts forth challenges in providing seam less connectivity to the user due to the complementary characteristics of the access technologies and networks used in overlay scenario. One of the prominent issues is providing good mobility management is the basis for seamless communication. To provide a non-disruptive communication the management has to be taken care more. As this work deals with heterogeneous networks, the issue of vertical handover is of prime importance in order to achieve service continuity. For 4G Base Station, 2100 MHz, 2300 MHz and 2500 MHz iscalculated for previous technique is calculated at 1118 meter, 1169 meter and 1215 meters respectively. For the proposed technique, in 4G Base Station for 2100 MHz, Handover is calculated at 951 meter. Similarly, 4G Base Station for 2100 MHz, 2500 MHz, and Handover is calculated at 983 meter and 1016 meters.

References

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