Abstract
With the communication services evolution from the fourth generation (4G) to the fifth generation (5G), we are going to face diverse challenges from the new network systems. On the one hand, seamless handoff is expected to integrate universal access among various network mechanisms. On the other hand, a variety of 5G technologies will complement each other to provide ubiquitous high speed wireless connectivity. Because the current wireless network cannot support the handoff among Wireless Access for Vehicular Environment (WAVE), WiMAX, and LTE flexibly, the paper provides an advanced handoff algorithm to solve this problem. Firstly, the received signal strength is classified, and the vehicle speed and data rate under different channel conditions are optimized. Then, the optimal network is selected for handoff. Simulation results show that the proposed algorithm can well adapt to high speed environment, guarantee flexible and reasonable vehicles access to a variety of networks, and prevent ping-pong handoff and link access failure effectively.
Highlights
With the continuous development of the fifth generation (5G) mobile communications and the ever-maturing standards, intelligent terminals and mobile Internet and networking systems have shown a trend of rapid development worldwide
In order to allow users to roam among various systems transparently and seamlessly, this paper presents a novel algorithm which supports the horizontal handoff in the same network and can classify the received signal strength (RSS) and optimize velocity speed and data rate under different channel conditions to choose an optimal network to handoff
Horizontal handoff refers to handoff in the same access technology, while vertical handoff is the handoff process occurring between different access network technologies
Summary
With the continuous development of the fifth generation (5G) mobile communications and the ever-maturing standards, intelligent terminals and mobile Internet and networking systems have shown a trend of rapid development worldwide. Different from the traditional cellular networks which are based on fixed base stations (BSs) and mobile cellular networks, the vehicular communication systems require high speed mobile terminals (MTs) to use self-organizing network (SoN) or cooperation to realize endto-end (e2e) data interaction directly [10]. In order to allow users to roam among various systems transparently and seamlessly, this paper presents a novel algorithm which supports the horizontal handoff in the same network and can classify the RSS and optimize velocity speed and data rate under different channel conditions to choose an optimal network to handoff. There is no doubt that the fuzzy logic decision algorithm takes many features of the mobile terminals (MTs) and access network into consideration and makes the handoff algorithm easier for hardware implementation.
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