Improvement and queuing analysis of the handover mechanism in the high-speed railway communication

Dou, Zufang; Li, Suoping; Gaber, Jaafar; Chang, Xiaokai

doi:10.1007/s11235-019-00651-y

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…The authors of [40] show that the communication interruption is longer than the time to switch the processes in the physical and the Medium Access Control (MAC) layers due to queuing mechanisms. They propose an improved switch mechanism in order to ensure the continuity of communication.…”

Section: Handovers In Mobile Relay Nodesmentioning

confidence: 99%

Mobile relays for urban rail transportation systems

et al. 2020

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Handovers In Mobile Relay Nodesmentioning

confidence: 99%

Mobile relays for urban rail transportation systems

et al. 2020

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“…Vehicle-to-everything (V2X) refers to the interaction of information between vehicles and everything in the outside world, including the communication scenarios about vehicle-to-vehicle (V2V), vehicle-to-pedestrian (V2P), vehicle-to-infrastructure (V2I), and vehicleto-network (V2N). To improve the communication capability of V2X [2], IEEE 802.11p [3] was introduced as a new paradigm into the media access control (MAC) layer and physical layer in 2010.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of IEEE 802.11p Protocol in IoV under Error-Prone Channel Conditions

Gaber

et al. 2023

Security and Communication Networks

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The complexity of the channel condition in the Internet of vehicles (IoV) may increase the bit error rate (BER) of the intelligent vehicle terminals, resulting in data transmission failures or errors. Therefore, it is necessary to improve the performance of communication protocols under error-prone channel conditions. This article investigates the influence of the access categories’ (ACs) performance with channel errors by using four A C s to cause service differentiation based on the enhanced distributed channel access (EDCA) mechanism of the IEEE 802.11p. To address the error-prone characteristics of the channel and unsaturated traffic conditions, a three-dimensional Markov model is developed first, followed by an analysis of the characteristics and mutual transition probabilities of the seven classes of states in the model, and then, the steady-state equations of the system are developed to derive the steady-state distribution to study system performance. The model considers the backoff phase, the freezing of the backoff counter, the retransmission limit, the probability of collisions occurring, the size of the maximum and minimum contention window, and the number of interframe intervals. These parameters are chosen to meet the requirements for the protocol to operate, while also preventing overestimation of throughput and avoiding having packets being served all the time. We derive expressions for the throughput and delay of A C s under the conditions of error channels and unsaturated traffic. The impact of channel errors on the throughput and delay of A C s is evaluated by numerical simulation. Numerical results show that too many stations in the system will increase the average access delay and decrease throughput. The increase in BER will seriously decrease the performance of high-priority A C s . The throughput of the A C s is also modeled to vary with frame length and BER, and the variation curves of the optimal frame lengths for A C 3 and A C 2 were obtained.

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