Abstract:
A decade back, emergency voice communication
was the only target to support the patient in an ambulance. It is
now evolved from emergency voice communication to vital signal
monitoring and operating the machines from the remote place.
This evolution requires support from technology to meet the high
data rates along with reliability for the specified applications.
The millimeter-wave (mmWave) communication support high
data rate requirements of vehicular communication. However,
in the case of mmWave, the radio signals vary fast. It poses the
implementation challenge to the mmWave system in this scenario.
The other implementations challenges of mmWave are high path
loss, severe blockage and frequent beam updates which inhibit
seamless connectivity (reliability) to vehicular nodes. However,
the reliability is always a prime concern for any vehicular
communication system. This paper addresses these challenges by
implementing a novel energy-efficient strategy based on RSUs
deployment and radio access technology (RAT). The strategy is
to deploy RSUs on either side of the road and use an optimal
combination of mmWave and microwave RAT. The essential
analysis of such a hybrid system involves the evaluation of
parameters based on the analytic model. Hence, this paper
analytically obtains the expression for seamless coverage and
connectivity. The analysis is also extended to rate and energy
efficiency calculations. The analysis is supported by probabilistic
models-based simulations that agree closely with computation
results. The results claim that the proposed model leads to
improved performance in terms of coverage and rate while
maintaining the cost and energy efficiency within the limits.
