Enhanced Handover Decision Algorithm in Heterogeneous Wireless Network (original) (raw)
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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...
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...
Design an Algorithm for Vertical Handover In Heterogeneous Network
2014
A heterogeneous network is consisting of different wireless access standards. For seamless data transfer a vertical handoff (VHO) plays a major role. Vertical Handoff decision (VHO) is totally based upon Received Signal Strength (RSS) measurements. Handoff (HO) decision is made individually without considering other HO user equipments (UE). User mobility is a factor, which having important role in VHO decision. VHO is required only at lower speeds and high speed user velocity may cause unnecessary handovers that can degrade system capacity and QoS level. UE velocity make a HO decision, we can reduce the transmission cost and transmission time. Because of high bandwidth and ease of networking we consider the wireless access standards: Wi-Fi and Wi-max and LTE system. The algorithm is simulated in NS2 and the performance of the network is evaluated in terms of user velocity and handover numbers.
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.
Vertical handover decision algorithm in heterogeneous wireless networks
International Journal of Internet Protocol Technology, 2017
With the recent progress in the area of cellular communication the issue of inter cells handover without dropping an ongoing connection with the base station has arisen. In this paper, the focus is on the performance of vertical handover. Various proposed interconnection architectures for vertical handover in heterogeneous networks were studied. Two different algorithms to make the decision on when and to which network perform a handover were considered. In the first of them the decision is based on the received signal strength (RSS). In the second one a fuzzy logic system that uses RSS, bandwidth, battery power and packet loss as the input parameters is proposed. The simulation results show that the algorithm based on fuzzy logic leads to a reduction of the number of handovers and a minimization of the power consumption as compared to the first algorithm used here and the existing algorithms.
Efficient Algorithm for Vertical Handover in Heterogeneous Wireless Mobile Network
VAWKUM Transactions on Computer Sciences, 2017
This paper present the new idea of Vertical handover for heterogeneous Wireless Networks, based on different parameters values i.e, available Bandwidth, received signal strength, mean number of request per unit time. Also other parameters such as mean number of calls served per unit time, power deception, power consumption, network condition and duration for mobile station to present in network are observed. Three network selected for the handover, the vertical handover is take place at best resulted network between the available networks. In this article, provoked with facts and figure which done by vertical handoff procedure on mobile nodes but the crucial parameters which is battery power may also consider highly for certain mobile nodes, call blocking probability of networks are define to make decision for network with good quality, for the proposed algorithm experiment results are shown between the available networks and parameters, graphically illustrate the vertical handover to the specific network.
Improved Handover Decision Algorithm Using Multiple Criteria
Procedia Computer Science, 2018
The transfer of massive data between varied network positions links of network relies on data rate, as well as the traffic capacity of the network. Conventionally, a device that is mobile can be used to attain vertical handover functional by weighing in only an aspect, which refers to Received Signal Strength (RSS). The application of this particular criterion could lead to interruption in services, ineffective vertical handover , and a network load that is not balanced. Hence, this paper proposes an improvised vertical handover decision algorithm by integrating multicriteria within a wireless network that is heterogeneous. The proposed algorithm comprised of three vertical handover decision algorithms, namely: mobile weight, network weight, and equal weight. Additionally, three technology interfaces were embedded in this study including Worldwide interoperability for Microwave Access (WiMAX), Wireless Local Area Network (WLAN), and Long-Term Evolution (LTE). As a result, the simulation outcomes demonstrated that the handover decision algorithm for network weight generated exceptional outputs, in comparison to mobile and equal weights, as well as the conventional network decision algorithm from the aspects of handover failure and handover number probabilities.
Multi-Criteria Vertical Handover Decision Algorithm in Heterogeneous Wireless Network
Vertical handover is essential to ensure service continuity in a heterogeneous network. Multi-criteria decision is proposed to reduce handover rate and optimizing usage of network resource compared to the conventional handover decision, which used single criteria. The algorithm is evaluated by assessing the performance in terms of number of handoff, load balance index, and network blocking probability. By implementing the proposed handover decision algorithm, the number of handoff decreased up to 90.81%. The average blocking probability decreases by 23.20% and the load balance index was improved by 68.50%.
Vertical handover in heterogeneous network
The need of always being connected to network with multiple wireless technologies calls for seamless connectivity in high dynamic scenarios. An intelligent handover decision policy able to classify the candidate’s point of attachment based on their provided context and the required mobile user context is required to ensure seamlessness. The decision policy is realized with an algorithm which will choose the appropriate context to be used for making decision for mobility management and handover process. In this paper, three radio access technologies, Wi-Fi, 3G and GPRS (mobile networks), are considered for implementation. An optimistic approach for an intelligent handover in order to achieve the best available network is discussed.
Computer Networks, 2010
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]