Vehicle-to-infrastructure communication over multi-tier heterogeneous networks

The commercial deployment of 5G networks require heterogeneous multi-tier, multiple radio access technologies (RATs) to support vehicle-to-infrastructure (V2I) communication with diversified services. Vehicles may need to cross a number of heterogeneous networks of various sizes before reaching the destination. Due to high-speed travel, vehicles may quickly move in and out of the network coverage areas while performing handover. Fast and efficient selection of an appropriate underlying network is critical for seamless handover performance. In this paper we propose a novel network selection mechanism for improved handover performance in V2I communication over heterogeneous wireless network. The idea is for vehicles to self-evaluate a candidate list of access points (AP) that are located in the vehicle movement direction and select the best underlying candidate network based on key criteria, like, the distance between target candidate and the trajectory of the vehicle movement as well as the vehicle mobility information. Fuzzy logic inference system is used to decide whether a target candidate is suitable for handover. Experimental results show that for a vehicle moving at 30km=h, an AP of 100m radius should be located at less than 30m from the road, while this distance is limited to 15m when the vehicle speed is 60km/h.

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A Novel Network Selection Mechanism for Vehicle-to-Infrastructure Communication

Although Vehicular Ad hoc Networks are emerging as a novel paradigm for new classes of secure and safety services, supporting seamless connectivity remains a challenge, due to the high vehicle speed, and the nonhomogeneous nature of the network infrastructure. In this work we shall present an analytical model in support of a novel vertical handover algorithm that uses the vehicle’s speed as crucial input and overcomes, under our assumptions, network performance of recent related works. We support our initial results with a simulation study.

A Speed-based Vertical Handover Algorithm for VANET

Next generation mobile communications will rely on integrated networks consisting of multiple wireless access technologies such as WiFi, WiMAX, GSM and UMTS. With a variety of access technologies, mobile users want to take diverse advantages without any disruption when they move from one place to another. Seamless handover between homogeneous or heterogeneous wireless access networks will be a key to providing mobile users with required QoS. To achieve seamless handover in a vehicular environment, total handover delay must be very short. This paper proposes a location aware fast handover technique for vertical handover between WiMAX and WiFi networks to minimize target network detection delay, select proper target network for handover and eliminate a Ping-Pong effect. The proposed technique aims to reduce the total handover latency and can be applied to realize seamless handover between WiMAX and WiFi networks.

Location Aware Fast Handover Between WiMAX and WiFi Networks

Network selection in heterogeneous access networks simultaneously satisfying user profile and QoS

Fast handover is crucial to provide quality services to mobile users in vehicular environments. WiMAX and WiFi standards support high mobility in vehicular speed. However, WiMAX and WiFi network entry processes may take seconds to complete. This paper presents fast handover approaches between WiMAX and WiFi networks to speed up handover process. Fast Link layer handover protocols are proposed to realize rapid Link layer connectivity. Fast IP layer handover protocols are proposed to achieve high speed IP layer connectivity. The proposed fast handover techniques can be utilized to accomplish the seamless handover in vehicular communication networks.

Tsutomu Tsuboi

Papers

Location Aware Fast Handover Between WiMAX and WiFi Networks

Fast Handover between WiMax and WiFi Networks in Vehicular Environment