A survey of vertical handover decision algorithms in Fourth Generation heterogeneous wireless networks (original) (raw)
Related papers
Vertical handover decision (VHD) algorithms are essential components of the architecture of the forthcoming Fourth Generation (4G) heterogeneous wireless networks. These algorithms need to be designed to provide the required Quality of Service (QoS) to a wide range of applications while allowing seamless roaming among a multitude of access network technologies. In this paper, we present a comprehensive survey of the VHD algorithms designed to satisfy these requirements. To offer a systematic comparison, we categorize the algorithms into four groups based on the main handover decision criterion used. Also, to evaluate tradeoffs between their complexity of implementation and efficiency, we discuss three representative VHD algorithms in each group. j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / c o m n e t of two VHD algorithms. A subsequent survey's focus [41]
… and Mobile Computing …, 2011
This thesis presents a vertical handover decision (VHD) scheme for optimizing the efficiency of vertical handover processes in the Fourth Generation (4G) heterogeneous wireless networks. The scheme consists of three closely integrated modules: Handover necessity estimation, handover target selection, and handover triggering condition estimation. Handover necessity estimation module determines whether a handover is necessary to an available network. Handover target selection module chooses the "best" network among the available candidates based on a set of criteria. Finally, handover triggering condition estimation module determines the right moment to initiate a handover out of the currently connected network.
Design an Algorithm for Vertical Handover Strategies in Heterogenous Wireless Network
2018
A heterogenous wireless network consists of different wireless access standards. To transfer data seamlessly vertical handoff (VHO) plays a major role. Seamless continuity is the main goal in 4G wireless networks. When a mobile terminal is in overlapping area, for service continuity handoff mechanism is mainly used while moving in heterogenous wireless networks. Vertical Handoff decision (VHO) is based on received signal strength (RSS) signals. While taking VHO decision, user mobility is an important factor. VHO is required only at lower speeds and higher speed user velocity may cause unnecessary handovers that can reduce system capacity and Qos level. UE velocity makes the HO decision, we can reduce the transmission cost and transmission time. Wireless access standards: Wi-Fi, Wimax, LTE. This algorithm is simulated in NS2 and its performance is evaluated in terms of user velocity and handover numbers. This approach leads to improvements in the end user experience. IndexTerms–Heter...
Vertical Handover Decision Algorithms in Multi-Wireless Network Systems
International Journal of Engineering Research and Technology., 2019
The premise of having several network systems consists of different access technologies. Network correspondence happens when two wireless schemes exchange information over the network. A moving cell-phone device could achieve vertical handover operation when receiving signal strength (RSS) from network. Using one of wireless services may interrupt with other service and cause unbalanced network load, or it may cause incompetent vertical handover. This research improves vertical handover decision algorithm for multiple wireless network service. It is preceded with comparing three wireless communication interfaces, which are Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX), and Long-Term Evolution (LTE). The study base on three types of priority algorithms to make a vertical handover decision (VHD), they are: equal, mobile, and network priority. VHD algorithms are fundamental segments to the engineering of the anticipated Fourth Generation (4G) heterogeneous wireless networks. These algorithms should be intended to give the required Quality of Service (QoS) to a wide scope of uses while permitting consistent wandering through a host of access network fees. The results show that the proposed algorithm for handover decision calculation beats the customary network decision calculation as far as handover number likelihood and the handover disappointment likelihood. What's more, it is seen that the network need handover decision calculation creates better outcomes contrasted with equivalent need and mobile need handover decision calculation. Lastly, the simulation outcomes are approved using explanatory model.
Increasing consumer demand for access to services anywhere and anytime is driving a hastened technological progression towards the integration of a variety of wireless access technologies. Therefore one of the chief interest points of Next Generation Wireless Networks (NGWNs), refers to the capability to support wireless network access equipments to guarantee a high rate of services between dissimilar wireless networks. To answer these problems it is essential to have decision algorithms to decide for every user of mobile terminal, which is the most excellent network at some point, for a service or a precise application that the user needs. Therefore to make these things, many algorithms use the vertical handoff technique. A series of algorithms based on vertical handoff technique with a categorization of the different existing vertical handoff decision strategies, which tries to resolve these issues of wireless network selection at a specified time for a specific application of an user has been discussed in this paper. Also few parameters that are to be considered during vertical handover have been discussed briefly.
2013
Abstract:- Next generation communications will offer a wide range of services available to users anywhere at any time. Users will have access to multiple networks at the same time. So there is a need that the user should be able to roam seamlessly among the multiple access network technologies. Vertical handover decision algorithms are essential components of the fourth generation (4G) heterogeneous wireless networks. These algorithms should be designed so as to provide the required Quality of Service (QoS) to a wide range of applications. In this paper we are presenting the survey of VHD algorithms designed to satisfy these requirements.
Vertical handoff algorithm for different wireless technologies
Transferring a huge amount of data between different network locations over the network links depends on the heterogeneous wireless network. Such a network consists of several networks with different access technologies. Traditionally, a mobile device may be moved to achieve the operations of vertical handover, considering only one criterion, that is, the received signal strength (RSS). The use of a single criterion may cause service interruption, an unbalanced network load, and an inefficient vertical handover. In this paper, we propose enhanced vertical handover decision algorithm based on multiple criteria in the heterogeneous wireless network. The algorithm consists of three technology interfaces: Long-Term Evolution (LTE), Worldwide interoperability for Microwave Access (WiMAX), and Wireless Local Area Network (WLAN). It also employs three types of the vertical handover decision algorithms: equal priority, mobile priority, and network priority. The simulation results illustrate...
Survey of vertical Handover Decision Algorithms
2013
Next generation communications will offer a wide range of services available to users anywhere at any time. Users will have access to multiple networks at the same time. So there is a need that the user should be able to roam seamlessly among the multiple access network technologies. Vertical handover decision algorithms are essential components of the fourth generation (4G) heterogeneous wireless networks. These algorithms should be designed so as to provide the required Quality of Service (QoS) to a wide range of applications. In this paper we are presenting the survey of VHD algorithms designed to satisfy these requirements.
An overview of vertical handover decision strategies in heterogeneous wireless networks
Computer Communications, 2008
In the next generation of wireless networks, mobile users can move between heterogeneous networks, using terminals with multiple access interfaces and non-real-time or real-time services. The most important issue in such environment is the Always Best Connected (ABC) concept allowing the best connectivity to applications anywhere at anytime. To answer ABC requirement, various vertical handover decision strategies have been proposed in the literature recently, using advanced tools and proven concepts. In this paper, we give an overview of the most interesting and recent strategies. We classify it into five categories for which we present their main characteristics. We also compare each one with the others in order to introduce our vertical handover decision approach.