Performance analysis of ultra-reliable short message decode and forward relaying protocols

The deployment of relays between Internet of Things (IoT) end devices and gateways can improve link quality. In cellular-based IoT, relays have the potential to reduce base station overload. The energy expended in single-hop long-range communication can be reduced if relays listen to transmissions of end devices and forward these observations to gateways. However, incorporating relays into IoT networks faces some challenges. IoT end devices are designed primarily for uplink communication of small-sized observations toward the network; hence, opportunistically using end devices as relays needs a redesign of both the medium access control (MAC) layer protocol of such end devices and possible addition of new communication interfaces. Additionally, the wake-up time of IoT end devices needs to be synchronized with that of the relays. For cellular-based IoT, the possibility of using infrastructure relays exists, and noncellular IoT networks can leverage the presence of mobile devices for relaying, for example, in remote healthcare. However, the latter presents problems of incentivizing relay participation and managing the mobility of relays. Furthermore, although relays can increase the lifetime of IoT networks, deploying relays implies the need for additional batteries to power them. This can erode the energy efficiency gain that relays offer. Therefore, designing relay-assisted IoT networks that provide acceptable trade-offs is key, and this goes beyond adding an extra transmit RF chain to a relay-enabled IoT end device. There has been increasing research interest in IoT relaying, as demonstrated in the available literature. Works that consider these issues are surveyed in this paper to provide insight into the state of the art, provide design insights for network designers and motivate future research directions.

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“…Content may change prior to final publication. performance than direct communication [186], [187] and [188].…”

Section: Ultrareliable Low Latency Communication (Urllc) Applicationmentioning

confidence: 97%

Relaying in the Internet of Things (IoT): A Survey

Uyoata¹,

Mwangama

Adeogun

2021

IEEE Access

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“…performance is the main topic of this chapter, which also examines several optimization strategies to improve the system's efficacy and efficiency in supporting mission-critical applications (Nouri et al, 2018).…”

Section: Performance Evaluation and Optimization Techniquesmentioning

confidence: 99%

Ultra-Reliable Low-Latency Communication (URLLC) in 5G Networks: Enabling Mission-Critical Applications

Ying,

Shajahan,

Khair

et al. 2023

Eng. int. (Dhaka)

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In 5G networks, Ultra-Reliable Low-Latency Communication (URLLC) is a critical technology that supports mission-critical applications in various industry sectors. This study investigates the importance, difficulties, and policy consequences of URLLC deployment. A thorough assessment of the literature, an analysis of the underlying technologies, performance evaluation methods, and the effect of URLLC on mission-critical systems are all part of the process. Principal discoveries underscore the revolutionary possibilities of URLLC in healthcare, transportation, industrial automation, and public safety. However, they also point to obstacles to technological optimization, spectrum distribution, security, and interoperability. The significance of proactive steps in spectrum policy, regulatory frameworks, data protection, and research funding is highlighted by policy implications as they aid in successfully implementing URLLC. Stakeholders may fully realize the potential of URLLC to build a connected world where incredibly dependable communication enables people, companies, and communities to prosper and innovate in the digital era by tackling these issues and accepting policy actions.

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“…2π and µ " c n{2π e 2R ´1 [17]. The accuracy of the approximated outage probability in (10) is illustrated in [18,Fig. 3].…”

Section: Performance Analysis Of Relaying Undermentioning

confidence: 99%

In-Band Pilot Overhead in Ultra-Reliable Low Latency Decode and Forward Relaying

Nouri

Alves

Souza

2019

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)

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In URLLC the performance of short message communications highly depends on the training sequence length due to the stringent latency and reliability requirements. In this paper, we study the performance of cooperative and non-cooperative transmissions under imperfect channel estimation and Rayleigh fading for URLLC. We assume a peak power constraint on pilot symbols in addition to the average power constraint which is used for comparison purposes. We obtain the optimal training length as a function of blocklength and power constraint factor to meet the URLLC requirements. Moreover, the simulation results show the impact of pilot overhead on reliability, latency, and goodput of cooperative communications compared to pointto-point transmission.

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Performance analysis of ultra-reliable short message decode and forward relaying protocols

Cited by 12 publications

References 49 publications

Relaying in the Internet of Things (IoT): A Survey

Relaying in the Internet of Things (IoT): A Survey

Ultra-Reliable Low-Latency Communication (URLLC) in 5G Networks: Enabling Mission-Critical Applications

In-Band Pilot Overhead in Ultra-Reliable Low Latency Decode and Forward Relaying

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