An Admission Control Mechanism for 5G LWA

Bajracharya, Rojeena; Shrestha, Rakesh; Kim, Sung Won

doi:10.3390/su10061999

Cited by 6 publications

(8 citation statements)

References 19 publications

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“…The 5G and beyond technology in next-generationneration vehicular communication is envisaged to provide higher data rate, higher capacity, enhanced QoE, lower operating cost, lower delay, persistent service delivery, massive vehicular node connectivity, and security [77,78]. The evolution of C-V2X towards 5G NR and its implementation in V2X technology was discussed in Section 3.…”

Section: Integration Of Blockchain With Cellular Technology In V2xmentioning

confidence: 99%

Evolution of V2X Communication and Integration of Blockchain for Security Enhancements

et al. 2020

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With the rapid evolution in wireless communications and autonomous vehicles, intelligent and autonomous vehicles will be launched soon. Vehicle to Everything (V2X) communications provides driving safety, traffic efficiency, and road information in real-time in vehicular networks. V2X has evolved by integrating cellular 5G and New Radio (NR) access technology in V2X communications (i.e., 5G NR V2X); it can fulfill the ever-evolving vehicular application, communication, and service demands of connected vehicles, such as ultra-low latency, ultra-high bandwidth, ultra-high reliability, and security. However, with the increasing number of intelligent and autonomous vehicles and their safety requirements, there is a backlash in deployment and management because of scalability, poor security and less flexibility. Multi-access Edge Computing (MEC) plays a significant role in bringing cloud services closer to vehicular nodes, which reduces the scalability and flexibility issues. In addition, blockchain has evolved as an effective technology enabler to solve several security, privacy, and networking issues faced by the current 5G-based MEC systems in vehicular networks. Blockchain can be integrated as a strong security mechanism for securing and managing 5G V2X along with MEC. In this survey, we discuss, in detail, state-of-the-art V2X, its evolution based on cellular 5G technology and non-cellular 802.11bd. We investigate the integration of blockchain in 5G-based MEC vehicular networks for security, privacy protection, and content caching. We present the issues and challenges in existing edge computing and 5G V2X and, then, we shed some light on future research directions in these integrated and emerging technologies.

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Section: Integration Of Blockchain With Cellular Technology In V2xmentioning

confidence: 99%

Evolution of V2X Communication and Integration of Blockchain for Security Enhancements

et al. 2020

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“…These equations are addressed in some analytical models [32], [40]- [42]. Let m refer to the transmission probability of AC class m inside the station, which expressed in (11), as shown at the bottom of this page, [40]; where β m is the probability that backoff counter can be decreased by one for access category m, C m is the collision probability of access category m for a station, r m is the retransmissions limit for access category m, D m is the maximum times for doubling the CW after a collision for access category m. β m , and C m are defined as follows [40]- [42]:…”

Section: E Game-theoretic Based Adaptation Of Transmission Probabilitymentioning

confidence: 99%

“…After obtaining the optimal transmission probability, the CW min can be adapted through (11) and (15) within the CW min of the guidance CW.…”

Section: E Game-theoretic Based Adaptation Of Transmission Probabilitymentioning

confidence: 99%

“…IEEE 802.11 Networks becomes the favored supplementary offloading networks due to its advantages: ease of deploying, higher data rates, cost-effective, unlicensed spectrum, convenient because of most cellular network users has equipment contains both of 802.11 and cellular modules which mean that there is no need to upgrade the user equipment (UE). LWA has evolved as a promising technology to improve the network capacity and quality of service (QoS) as a step toward 5G networks [5]; it can utilize both WLAN and LTE spectrums at the same time and combined between the advantages of LTE and WLAN access technology [11].…”

Section: Introductionmentioning

confidence: 99%

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An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

et al. 2020

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To keep pace with the current rapid evolution of mobile data requirements, IEEE 802.11 was evolved to provide more desirable performance to fulfill the needs of fifth-generation (5G) and Internet of Things (IoT) networks. It provides two different access contention-based schemes; Distributed Coordination Function (DCF) which not differentiates between different services, and Enhanced Distributed Channel Access (EDCA) which provides differentiation between various services through four priority Access Categories (ACs). The dilemma of the conventional IEEE 802.11 networks is the static assignation of parameters in DCF and EDCA regardless of the number of associated stations and no matter what kind of service is required by each station (i.e., the activity of ACs). Consequently, this led to a significant degradation in the performance of the network, especially in the case of ultra-dense load network. Therefore, in this paper, we introduce a novel algorithm for EDCA considering a dynamic assignation of Arbitration Inter-Frame Space Number (AIFSN) and guidance Contention Window (CW) depending on the number of associated stations and ACs activeness status. Based on the analytical models of EDCA, a game-theoretic method is proposed to make each associated station adapts its transmission probability within the guidance CW. The purpose of guidance CW is a pre-stage to detect the selfish stations which pick up a very low CW to maximize its throughput regardless of the overall network throughput. Simulation results show that the proposed game-based algorithm can obtain higher performance than the standard 802.11 networks in terms of normalized throughput, data dropped during retransmissions limit threshold exceeding, and mean average delay for sensitive delay applications. INDEX TERMS EDCA, high density WLANs, multiple access, selfish nodes, 5G.

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“…To alleviate the spectrum scarcity problem in 5G networks, traditional mobile data offloading schemes from Long-Term Evolution (LTE) to WLANs have been revised by the third-Generation Partnership Project (3GPP) in release 13, which is known as LTE-WLAN Aggregation (LWA) [30]. Bajracharya et al [31] proposed a user-offloading algorithm for Evolved Node B (eNB) hardware that smartly allocates the deprived LTE User-Equipment (UEs) and assigns the LWA service to an optimal number of UEs without degrading the QoS for existing WLAN UEs. With LWA, UEs supporting both LTE and WLAN can utilize both LTE and WLAN links simultaneously.…”

Section: A Brief Review Of Articles Of This Special Issuementioning

confidence: 99%

5G Mobile Services and Scenarios: Challenges and Solutions

et al. 2018

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The Fifth generation (5G) network is projected to support large amount of data traffic and massive number of wireless connections. Different data traffic has different Quality of Service (QoS) requirements. 5G mobile network aims to address the limitations of previous cellular standards (i.e., 2G/3G/4G) and be a prospective key enabler for future Internet of Things (IoT). 5G networks support a wide range of applications such as smart home, autonomous driving, drone operations, health and mission critical applications, Industrial IoT (IIoT), and entertainment and multimedia. Based on end users’ experience, several 5G services are categorized into immersive 5G services, intelligent 5G services, omnipresent 5G services, autonomous 5G services, and public 5G services. In this paper, we present a brief overview of 5G technical scenarios. We then provide a brief overview of accepted papers in our Special Issue on 5G mobile services and scenarios. Finally, we conclude this paper.

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An Admission Control Mechanism for 5G LWA

Cited by 6 publications

References 19 publications

Evolution of V2X Communication and Integration of Blockchain for Security Enhancements

Evolution of V2X Communication and Integration of Blockchain for Security Enhancements

An Adaptive EDCA Selfishness-Aware Scheme for Dense WLANs in 5G Networks

5G Mobile Services and Scenarios: Challenges and Solutions

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