Improving Handover Mechanism in Vehicular WiFi Networks

Yeryomin, Roman; Ancans, Arnis; Pētersons, Ernests; Geriņa-Ancāne, Anita

doi:10.1007/978-3-030-39688-6_32

Cited by 3 publications

(3 citation statements)

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“…If α = 1, the Nakagami distribution describes a Rayleigh distribution, and if α > 1, it is the Rician distribution. The average value of the fluctuations of the received signal power is calculated as follows: (4) In the calculations ; thus, Eq. ( 4) is simplified:…”

Section: The Power Level Of Received Signal With Fluctuationsmentioning

confidence: 99%

“…As a vehicle speed increases, the mobile client is forced to perform more frequent handover procedures between wireless access points (APs). Consequently, the active data transmission time in AP coverage area decreases and proportionally more time is spent on the organisation and execution of the handover procedure [4]. Another important reason for the decrease in average throughput is the impact of environment on wireless data transmission, which becomes much more aggressive, compared to standard client movement conditions.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, application layer throughput (goodput) decreases as overheads increase [3]. This may also lead to an increase in the delay of handover procedure [4]. When assessing the theoretically possible throughput of a communication channel, it is important to consider both the distance between the mobile client and the transmitter, and the possible multipath propagation of signals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of Received Signal Power Level and Throughput Depending on Distance to Transmitter in Testbed for Automotive WLAN IEEE 802.11ac Communication Network

Ancans

Pētersons

Jerjomins

et al. 2022

Latvian Journal of Physics and Technical Sciences

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WLAN IEEE 802.11ac is one of the wireless network technologies that can be used for ITS (Intelligent Transport Systems) needs, in particular for providing vehicle passengers with access to the data transmission network. To evaluate the performance of such automotive wireless access networks, it is necessary to perform experimental measurements. By conducting the throughput measurements in WLAN-based automotive communications testbed, it has been observed that the throughput of the communication channel decreases and the received signal becomes weaker as the vehicle moves away from the wireless access point. The aim of the research is to verify theoretically whether there is a correlation between the received signal power level and the throughput of the communication channel depending on the distance to the transmitter. To calculate the received signal power depending on the distance to the transmitter, a log-normal signal propagation model can be used, which takes into account random signal fluctuations that are described by the Nakagami distribution. Further, based on the obtained results, Shannon’s theorem can be used to calculate the maximum theoretical throughput of the communication channel. The analysis of the obtained results shows that a correlation exists between the received signal power level and the throughput of the communication channel depending on the distance to the transmitter. The performed theoretical calculations justify the experimentally obtained results.

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Section: The Power Level Of Received Signal With Fluctuationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%