Mathematical Model of QoS-Aware Streaming with Heterogeneous Channel Access in Wi-Fi Networks

Lecture Notes in Computer Science - Internet of Things, Smart Spaces, and Next Generation Networks and Systems ◽

10.1007/978-3-319-46301-8_16 ◽

2016 ◽

pp. 193-204

Author(s):

Alexander Ivanov ◽

Evgeny Khorov ◽

Andrey Lyakhov ◽

Ilya Solomatin

Keyword(s):

Mathematical Model ◽

Channel Access

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Distributed Triggered Access for BSM Dissemination in 802.11bd V2V Networks

Applied Sciences ◽

10.3390/app10010311 ◽

2019 ◽

Vol 10 (1) ◽

pp. 311 ◽

Cited By ~ 1

Author(s):

Woojin Ahn ◽

Ronny Yongho Kim

Keyword(s):

Mathematical Model ◽

Wireless Local Area Network ◽

Local Area Network ◽

Transmission Rate ◽

Transmission Delay ◽

Frame Structure ◽

Ieee 802.11P ◽

Area Network ◽

Channel Access ◽

Queuing Model

In this paper, a novel channel access scheme, Distributed Triggered Access (DTA), is proposed for distributed V2V Basic Safety Message (BSM) dissemination in future platooning environment. To meet the stringent delay requirements of platooning communications, the proposed scheme is designed to use Wireless Local Area Network (WLAN) multi-user channel access in a distributed manner. The proposed scheme leverages advanced Medium Access Control (MAC) layer features, such as Triggered Uplink Access and Multi-user Request-To-Send (RTS), introduced in the 6th generation mainstream WLAN standard, IEEE 802.11ax, based upon a conceptual Physical (PHY) layer frame structure for IEEE 802.11bd, the successor of IEEE 802.11p. The proposed scheme is analyzed by mathematical model and simulations from transmission delay and successful transmission rate perspective. The mathematical model includes a Markov chain analysis that models the Enhanced Distributed Channel Access (EDCA) backoff procedure of DTA considering the effect of resumed backoff procedure with empty buffer caused by triggered access. Also, a Markov arrival/General service distribution/1 service channel (M/G/1) queuing model is provided to analyze the transmission delay of a BSM under unsaturated traffic condition. The extensive simulation results corroborate that DTA effectively improves the transmission success rate and reduces the average BSM collecting delay in a highly congested environment.

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