Abstract
In machine-type communication (MTC) consisting high-mobility machines, such as vehicles, aircrafts, robots, etc., there is a strong demand for fast wireless networking. With radars extensively applied in these machines for environment awareness, radar assisted fast neighbor discovery (ND) for wireless ad hoc networks is proposed to realize fast wireless networking for MTC. Four neighbor discovery algorithms are designed according to the accuracy level of prior information provided by radar. Then, the performance of neighbor discovery algorithms is analyzed theoretically. Simulation results are further provided to compare neighbor discovery algorithms with and without the prior information from radar. The results demonstrate that the time consumption of neighbor discovery is greatly reduced with prior information of radar. Moreover, the time consumption with prior information from radar increases with the number of nodes. However, the increasing speed is much slower than the neighbor discovery without prior information from radar. This paper proves the advantages of radar assisted neighbor discovery, which may motivate the study of radar assisted wireless networking schemes in the future.
Highlights
Machine-type communication (MTC) is widely deployed in the era of the 5th generation (5G) mobile networks [1]
In some MTC applications, such as vehicular networks and flying ad-hoc networks (FANETs), due to their high mobility and dynamic topology, there is a strong demand for fast wireless networking to realize cooperation among machines
The stop and reply mechanisms are applied in neighbor discovery algorithms according to the accuracy of the number of neighbors within the beam derived from radar detection
Summary
Machine-type communication (MTC) is widely deployed in the era of the 5th generation (5G) mobile networks [1]. In the perspective of wireless networking, prior information obtained from radar can accelerate the speed of neighbor discovery. Li et al [6] proposed a neighbor discovery algorithm called SBA-RA, where the prior information of neighbors obtained from radar is applied to reduce the time of neighbor discovery. Neighbor discovery algorithms depending on the accuracy of prior information obtained from radar have be rarely studied in existing literatures. The stop and reply mechanisms are applied in neighbor discovery algorithms according to the accuracy of the number of neighbors within the beam derived from radar detection. Z. Wei et al.: Radar Assisted Fast ND for Wireless Ad Hoc Networks designed according to the accuracy level of the prior information provided by radar. With cooperation between radar and communication, the prior information of radar can be applied in accelerating neighbor discovery.
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