Methodologies of Link-Level Simulator and System-Level Simulator for C-V2X Communication

Wang, Donglin; Sattiraju, Raja; Qiu, Anjie; Partani, Sanket; Schotten, Hans D.

doi:10.48550/arxiv.1907.04693

Cited by 1 publication

(5 citation statements)

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“…Therefore, resource reuse among UEs controlled by one BS is not considered here. Furthermore, with an intended communication range of 400 m and an ISD of 1732 m, there is little room from a geographic perspective to have 2 Tx UEs transmit on the same resource without overlap between their communication ranges or overlap with that of a Tx UE controlled by a neighboring BS [11].…”

Section: Resource Allocation and Schedulingmentioning

confidence: 99%

“…If the system is overloaded, some UEs cannot be supported by BS, and are therefore dropped. If the system is not fully loaded according to the Inter-Vehicle-Distance(IVD) and message rate [11], then in a real system there would be iterations (subframes) where no UE controlled by one BS does transmit, thereby the total interference generated in such iterations would be reduced. In our simulation, however, there is one Tx UE per BS in each iteration, thereby overestimating the interference.…”

Section: Resource Allocation and Schedulingmentioning

confidence: 99%

“…The key concept of C-V2X communication lies in sidelink and lots of researches proposed direct C-V2X communication [4][5] [6]. And direct C-V2X communication is using broadcast operating mode.…”

Section: Introductionmentioning

confidence: 99%

“…In our system-level simulation, resource allocation, mobility management, admission control, interference management, HARQ, and scheduling are modelled. The Key Performance Indicators (KPIs) are Signal-to-Noise-plusInterference-Ratio (SINR), MCS, BLER, and the PRR [11]. We consider the traffic consists of CAM messages, where each message is contained in a single packet, which in turn is contained in a single transport block.…”

Section: Introductionmentioning

confidence: 99%

“…Since multiple packets may be transmitted by other Tx UEs at the same time, on different frequency resources, a UE may miss multiple packets while it is itself transmitting. The missed packets due to this restriction are, however, not reflected in the PRR in the system simulator, there are more system configurations in [11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Retransmissions on the Performance of C-V2X Communication for 5G

Wang

Sattiraju

Qiu

et al. 2020

Preprint

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In recent years, the next generation of wireless communication (5G) plays a significant role in both industry and academy societies. Cellular Vehicle-to-Everything (C-V2X) communication technology has been one of the prominent services for 5G. For C-V2X transmission mode, there is a newly defined communication channel (sidelink) that can support direct C-V2X communication. Direct C-V2X communication is a technology that allows vehicles to communicate and share safety-related information with other traffic participates directly without going through the cellular network. The C-V2X data packet will be delivered to all traffic Users (UE) in the proximity of the Transmitter (Tx). Some UEs might not successfully receive the data packets during one transmission but the sidelink Tx is not able to check whether the Receivers (Rxs) get the information or not due to the lack of feedback channel. For enabling the strict requirements in terms of reliability and latency for C-V2X communication, we propose and evaluate one retransmission scheme and retransmission with different traffic speed scheme. These schemes try to improve the reliability of the safety-related data by one blind retransmission without requiring feedback. Although this retransmission scheme is essential to C-V2X communication, the scheme has a limitation in the performance aspect because of its redundant retransmission. Since radio resources for C-V2X communication are limited, we have to detect the effect of retransmission on the performance of the communication system. To the end, the simulator for evaluating the proposed schemes for the C-V2X communication has been implemented, and the performances of the different communication schemes are shown through the Packet Reception Ratio (PRR).

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Section: Resource Allocation and Schedulingmentioning

confidence: 99%

Section: Resource Allocation and Schedulingmentioning

confidence: 99%