Analysis of Distributed Congestion Control in Cellular Vehicle-to-Everything Networks

Toghi, Behrad; Saifuddin, Md; Fallah, Yaser P.; Mughal, M. O.

doi:10.1109/vtcfall.2019.8891335

Cited by 54 publications

(44 citation statements)

References 14 publications

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“…Reducing the power, the coverage reduces, but the probability that the channel is sensed as idle by a node increases and the spatial reuse of resources also increases. Indeed, power variations are for example at the core of SAE J2945/1 [22].…”

Section: B Resultsmentioning

confidence: 99%

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Congestion Control Mechanisms in IEEE 802.11p and Sidelink C-V2X

Bazzi

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

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1 Connected vehicles are expected to play a major role in the next future to improve safety and traffic efficiency on the road and short-range technologies have been defined to enable the direct exchange of information. To this aim, two solutions are currently the subject of a debate that goes beyond the technician, i.e., IEEE 802.11p and sidelink cellular-vehicle-to-anything (C-V2X). Tested and mature for deployment the first, possibly more efficient the second. In both cases, one of the main aspects is the management of channel congestions, which can cause serious packet losses and have a critical impact on the reliability of applications. Congestions can be managed through different approaches, including the control of transmission power, packet generation frequency, and the adopted modulation and coding scheme. Congestion management has been well studied in IEEE 802.11p, with consolidated algorithms included in the standards, whereas it appears somehow as a new topic looking at C-V2X. In this work, a review of the main congestion control mechanisms and a discussion of their applicability and efficiency in the two technologies is provided. This topic is addressed without focusing on specific algorithms and with the aim to provide general guidelines as a starting point for new proposals.

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Section: B Resultsmentioning

confidence: 99%

“…These results find confirmation in related work. Ineffectiveness of power variations is in fact shown in [22], where the same SAE J2945/1 algorithm is applied to the cellular technology. Even in [9], [10], where improvements varying the power level in LTE-V2X are shown, they appear very limited.…”

Section: B Resultsmentioning

confidence: 99%

Congestion Control Mechanisms in IEEE 802.11p and Sidelink C-V2X

Bazzi

2019

2019 53rd Asilomar Conference on Signals, Systems, and Computers

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“…In this article, which supplements our previous work [14], [15], we investigate the spatial and temporal characteristics of the C-V2X communication with and without enabling the distributed congestion control (DCC) mechanism, as suggested in [16]. This study helps us to further understand the effectiveness and capabilities of C-V2X in the context of safetycritical vehicular applications.…”

Section: Introductionmentioning

confidence: 78%

“…In what follows, we provide a brief overview of the PHY and MAC of C-V2X communication, followed by details of the distributed congestion control algorithm proposed in [16] and investigated in [12], [14]. C-V2X utilizes similar time and frequency divisions to those of the LTE technology [8], i.e., subframes in time domain and subchannels in frequency domain.…”

Section: DCC Enabled C-v2x Communicationmentioning

confidence: 99%

“…Congestion control algorithms are aimed at avoiding heavy performance degradation in dense network, in our case dense VANETs. This goal can be realized by either reducing the rate of message broadcast or by limiting the communication range of UEs [1], [14], [16]. UEs broadcast BSMs at a rate of 10 Hz in the baseline operation mode [17].…”

Section: DCC Enabled C-v2x Communicationmentioning

confidence: 99%

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Spatio-Temporal Dynamics of Cellular V2X Communication in Dense Vehicular Networks

Toghi

Saifuddin

Mughal

et al. 2019

2019 IEEE 2nd Connected and Automated Vehicles Symposium (CAVS)

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Cellular Vehicle-to-everything (C-V2X) communication is a major V2X solution proposed and developed by the 3rd Generation Partnership Project (3GPP). Our previous work has studied scalability aspects of C-V2X and demonstrated its potential for accommodating large numbers of vehicles in dense vehicular scenarios. However, existing studies in the scientific literature mostly have a network-level approach to the problem and do not assess the temporal and spatial dynamics of C-V2X networks in heavy network load situations. In this work we shed light on the spatio-temporal characteristics of these networks and investigate the effectiveness of the congestion control algorithm in dense vehicular ad-hoc networks (VANETs) in terms of settling time, stability, and reliability to be employed for the purpose of safety-critical vehicular applications, where latency plays a major role.

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Scalable Cellular V2X Solutions: Large-Scale Deployment Challenges of Connected Vehicle Safety Networks

Shah,

Zaman,

Saifuddin

et al. 2024

Automot. Innov.

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Vehicle-to-Everything (V2X) communication is expected to accomplish a long-standing goal of the Connected and Autonomous Vehicle (CAV) community to bring connected vehicles to roads on a large scale. A major challenge, and perhaps the biggest hurdle on the path towards this goal, is the scalability issues associated with it, especially when vehicular safety is concerned. As a major stakeholder, Cellular V2X (C-V2X) community, which is based on the 3rd Generation Partnership Project (3GPP), has long been trying to research on whether vehicular networks are able to support the safety-critical applications in high-density vehicular scenarios. This paper attempts to answer this question by first presenting an overview on the scalability challenges faced by 3GPP Release 14 Long Term Evolution C-V2X (LTE-V2X) using the PC5 sidelink interface for low and heavy-density traffic scenarios. Next, it demonstrates a series of solutions that address network congestion, packet losses, and other scalability issues associated with LTE-V2X to enable this communication technology for commercial deployment. In addition, a brief survey is provided into 3GPP Release 16 5G New Radio V2X (NR-V2X) that utilizes the NR sidelink interface and works as an evolution of C-V2X towards better performance for V2X communications, including new enhanced V2X (eV2X) scenarios that possess ultra-low-latency and high-reliability requirements.

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Analysis of Distributed Congestion Control in Cellular Vehicle-to-Everything Networks

Cited by 54 publications

References 14 publications

Congestion Control Mechanisms in IEEE 802.11p and Sidelink C-V2X

Congestion Control Mechanisms in IEEE 802.11p and Sidelink C-V2X

Spatio-Temporal Dynamics of Cellular V2X Communication in Dense Vehicular Networks

Scalable Cellular V2X Solutions: Large-Scale Deployment Challenges of Connected Vehicle Safety Networks

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