Development of Handover Decision Algorithms in Hybrid Li-Fi and Wi-Fi Networks

2020 ◽  
Author(s):  
Jaafaru Sanusi ◽  
Sadiq Idris ◽  
Steve Adeshina ◽  
Abiodun Musa Aibinu ◽  
Ibrahim Umar
Keyword(s):  
Handover Decision ◽  
Decision Algorithms

scholarly journals Using LTE-Sim in New Hanover Decision Algorithm for 2-Tier Macrocell-Femtocell LTE Network

2020 ◽  
Vol 9 (4) ◽  
Author(s):  
Umar Danjuma Maiwada ◽  
Aminu Aminu Muazu ◽  
Izaddeen Kabi Yakasai
Keyword(s):  
Mobility Management ◽  
Signal Strength ◽  
Research Area ◽  
Received Signal Strength ◽  
User Equipment ◽  
Base Stations ◽  
Decision Algorithm ◽  
Handover Decision ◽  
Access Policy ◽  
Decision Algorithms

Deployment of mini macrocell base stations can also be referred to as femtocells improve quality of service of indoor and outdoor users. Nevertheless, mobility management remains a key issue with regards to their deployment. This paper is leaned towards this issue, with in-depth focus on the most important aspect of mobility management - handover. In handover management, making a handover decision in the LTE two-tier macrocell femtocell network is a crucial research area. Decision algorithms in this research, are classified and comparatively analyzed according to received signal strength, user equipment speed, cost function and interference. However, it was observed that most of the discussed decision algorithms fail to consider cell selection with hybrid access policy in a single macrocell multiple femtocell scenario, another observation was a majority of these algorithms lack the incorporation of user equipment residence parameter. Not including this parameter boosts the number of unnecessary handover occurrence. To deal with these issues, a sophisticated handover decision algorithm is proposed. The proposed algorithm considers the user’s velocity, received signal strength, residence time as well as the femtocell base station’s access policy. Simulation results have shown that the proposed algorithm reduces the number of unnecessary handovers when compared to conventional received signal strength based handover decision algorithm.

scholarly journals Conceptual mobility model of vertical handover decision in heterogeneous networks

2019 ◽  
Vol 13 (3) ◽  
pp. 1143
Author(s):  
Norakmar Arbain ◽  
Zolidah Kasiran
Keyword(s):  
Heterogeneous Network ◽  
Vertical Handover ◽  
Mobility Model ◽  
Mobile Node ◽  
User Mobility ◽  
Handover Management ◽  
Handover Decision ◽  
Network Availability ◽  
Pattern Movement ◽  
Decision Algorithms

In heterogeneous network, maintaining seamless connectivity needs excessive efforts from various aspects such as network availability and mobile node reliability. Presently, a vertical handover management is a practical approach in facilitating the service continuity for mobile users. Many researches have been conducted in this area by considering performance improvement in delay, latency, and overhead. Preserving the Quality of Services (QoS) based on user mobility and pattern movement during handover decision has become an important aspect in vertical handover management. This paper presents the conceptual mobility model of vertical handover decision in heterogeneous network. Hence, several researches in vertical handover decision management has been reviewed regarding the issues on the vertical handover decision algorithms such as RSS Based Algorithm, MADM Based Algorithm and Intelligence Based Algorithm.  This paper highlights the current decision algorithms that integrate the traditional methods with intelligence algorithm for better optimization. In decision parameters, the user mobility pattern can be importance in terms of direction randomness and mobility speed.  Hence, a conceptual mobility-awareness model for vertical handover are been proposed in targeting some improvement of handover performance.

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