URLLC and eMBB in 5G Industrial IoT: A Survey

Abstract

Fifth generation (5G)-industrial Internet of things (IIoT) is the integration of IIoT and a private 5G network. The IIoT is a concept that involves incorporating smart objects, gadgets, and solutions into cutting-edge industrial operations to increase reliability, efficiency, and over-production costs. Furthermore, the integration of IIoT and 5G/beyond 5G (B5G) provides the potential for ubiquitous and instantaneous connectivity. The 5G architecture can handle the IIoT's stringent ultra-low latency, real-time processing, high data rate, nearby storage, and reliability requirements. A new era of economic growth is predicted for IIoT-assisted 5G/B5G wireless networks. It should be noted that the majority of the work in IIoT is focused on the architecture, with reliability and throughput being largely ignored. This paper provides a comprehensive review of B5G assisted IIoT wireless networks, with a focus on enhanced mobile broadband (eMBB) and ultra-reliable low latency communication (URLLC) services. Furthermore, it provides insights into various applications and key enabling technologies from the perspective of URLLC, eMBB, and their tradeoff.Index Terms-Fifth generation (5G), beyond 5G (B5G), sixth generation (6G), industrial Internet of things (IIoT), ultrareliable low latency communication (URLLC), enhanced mobile broadband (eMBB). I. INTRODUCTIONT HE emergence of industrial Internet of things (IIoT) has revolutionized industrial operations such as manufacturing and production by automating a huge number of connected components and devices. IIoT is a sub-category of Internet of things (IoT) that focuses on the use of IoT techniques and technologies [1]-[4] in industries such as smart cities, smart transportation, smart grid, smart health services, forestry, food, weather, agriculture, monitoring, and surveillance [5]-[18]. The machines/devices in IIoT are connected to capture smartness and autonomy in legacy systems [19]-[21]. It is estimated that by the end of 2030, roughly 80 billion devices will be connected to the Internet [22]-[24]. In IIoT, an increased degree of connectivity is involved, which has special requirements for high reliability, low latency, high speed, more flexibility, and secure communication [25]-[27].

A Survey of Scheduling in 5G URLLC and Outlook for Emerging 6G Systems

“…The resource allocation occurs in every time slot with 0.5 ms duration of each [5]. But in 5G the latency requirements are different for different services and applications as shown in Table 3 [17], [18], [19], [20]. For many applications, the latency requirement is 1 ms, hence with the LTE the E2E or roundtrip latency of 1 ms is not practicable.…”

Ultra‐reliability and low‐latency communications on the internet of things based on5Gnetwork: Literature review, classification, and future research view

“…Khan, et al, 38 reviewed several papers following Beyond 5G (B5G) based on the Industrial Internet of Things, with an investigation on eMBB and URLLC. In this paper, they tried to discuss the B5G structure based on IoT layers.…”

Energy‐efficient machine type communication in HetNets under statistical QoS guarantees

“…These MTC devices, in most circumstances, have resource and energy limitations, necessitating a rigorous power consumption method. 1,2 However, energy-efficient communication employing resource-constrained devices may jeopardize the achievable quality-of-service (QoS) performance of M2M communication. In addition, a variety of novel IoT applications need ultra-reliable and low-latency communication (URLLC), with latency as low as a few milliseconds and packet loss less than 10 −4 .…”

“…Machine‐to‐machine (M2M) communication is considered one of the key enabling technologies for Internet‐of‐Things (IoT) and fifth‐generation (5G) and beyond cellular networks, which allows machine‐type communication (MTC) devices to communicate without (or with very little) human intervention. These MTC devices, in most circumstances, have resource and energy limitations, necessitating a rigorous power consumption method 1,2 . However, energy‐efficient communication employing resource‐constrained devices may jeopardize the achievable quality‐of‐service (QoS) performance of M2M communication.…”