Time-Sensitive Networking in IEEE 802.11be: On the Way to Low-Latency WiFi 7

Adame, Toni; Carrascosa, Marc; Bellalta, Boris

doi:10.3390/s21154954

Cited by 73 publications

(30 citation statements)

References 40 publications

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“…e performance of time synchronization depends on the precise clock source provided by the master clock [14][15][16][17][18].…”

Section: All-domain Fusion Based Time Synchronization Protocol (Af-tsp)mentioning

confidence: 99%

“…e case presented in Section 2.3 performs the construction of the network topology. ere are 8 nodes in the network, node B is the master clock node in the network, the rest of the nodes as master clock slave nodes, directly or indirectly synchronized with the master clock node, we use the gPTP clock synchronization method [14,39]. e offset of the rest clocks from the master clock is calculated using the following equation.…”

Section: Synchronization Precision Testmentioning

confidence: 99%

“…Similarly, there is an inevitable and urgent need for timesensitive network services in many industries, such as medical care, augmented reality and virtual reality (AR/VR), and self-driving vehicles [11][12][13][14][15]. Among all solutions, time synchronization is the key prerequisite, and so is the ATSN [16,17].…”

Section: Introductionmentioning

confidence: 99%

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All-Domain Fusion-Based Time Synchronization Protocol in SD-ATSN

Zhu

Chen²,

Chen

et al. 2022

Mobile Information Systems

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As combat scales up and weapons become more intelligent, airborne networks (AN) must facilitate high-precision communications. This means that the airborne network should have communication capability with minimum delay, low jitter, and high reliability, and this new type of AN is called an airborne time-sensitive network (ATSN). A prerequisite to guarantee the above communication capability is to have a high precision time synchronization protocol. To plug this gap, we have designed a software-defined airborne time-sensitive network (SD-ATSN) architecture based on the benefits of software-defined centralization and flexibility. It supports our proposed all-domain fusion-based time synchronization protocol (AF-TSP) to support precise time synchronization between ATSN platforms. In AF-TSP, we innovatively propose an all-domain (land, sea, air, and space) master clock hot standby mechanism to cope with the existing instability and poor robustness in AN. In the key problem of the master clock election, we first completed a rough election utilizing improved K-Means++. Subsequently, on top of the rough election, we inserted a mixed mutation operator to improve the convergence of the multiobjective optimization algorithm No Dominant Sorting Genetic Algorithm-II (NSGA-II). The control delay, clock accuracy, and path reliability coefficient are the optimization objectives for selecting the appropriate master clock. Simulation results demonstrate that our protocol has advantages in terms of synchronization precision, communication delay, and network robustness.

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“…e performance of time synchronization depends on the precise clock source provided by the master clock [14][15][16][17][18].…”

Section: All-domain Fusion Based Time Synchronization Protocol (Af-tsp)mentioning

confidence: 99%

Section: Synchronization Precision Testmentioning

confidence: 99%

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All-Domain Fusion-Based Time Synchronization Protocol in SD-ATSN

Zhu

Chen²,

Chen

et al. 2022

Mobile Information Systems

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“…Sufficient reliability is needed in mission-critical applications to ensure that the replacement of wired communication systems with wireless solutions will not compromise performance. In the effort of increasing reliability, techniques exist that should be considered to improve reliability, such as frequency planning, redundancy in space, frequency, and time, and precision time-scheduling [10].…”

Section: Reliabilitymentioning

confidence: 99%

Wireless user requirements for the factory workcell

Montgomery¹,

Candell²,

Liu³

et al. 2021

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Wireless communication is becoming crucial to advanced manufacturing. Industry 4.0 and Smart Manufacturing depend on networked industrial automation systems. The term Industrial Internet of Things (IIoT) has been used to describe the deployment of interconnected machines, sensors, and actuators within modernized factories. The adoption of wireless systems is essential to these IIoT deployments. Wireless automation significantly reduces capital investment costs, including conduit, cables, networking equipment, and installation labor. To enable the adoption of wireless systems at the factory-floor level, wireless requirements must be established to realize the benefits of wireless communication systems within those factories. One challenge is that existing wireless standards lack technical specifications that support low-latency and high-reliability communication for factory applications. Additionally, requirements for such capabilities are published or advertised without validation of said requirements. Often, requirements published by standards development organizations appear excessively strict and invalidated by empirical study. Moreover, those requirements ignore the capabilities of the applications to use their own intelligence to compensate for lost reliability in the network. This report analyzes existing wireless user requirements stated by industry organizations, and it produces a combined perspective on wireless user requirements for the factory workcell with supporting rationale.

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“…There will be 628 million Wi-Fi hotspots by 2023, four times up from 2018, 11% of which adopting Wi-Fi 6 and 6E [1], [2]. Meanwhile, a new generation of Wi-Fi-IEEE 802.11be, or Wi-Fi 7-is in the making, with technical discussions underway to determine the specific implementation of several disruptive new features [3]- [8]. The new capabilities of IEEE 802.11be will include 320 MHz bandwidth channels, 16 spatial streams, hybrid automatic repeat request (HARQ), and multi-band/channel aggregation and operation [9].…”

Section: Introductionmentioning

confidence: 99%

Performance and Coexistence Evaluation of IEEE 802.11be Multi-link Operation

Carrascosa¹,

Giordano²,

Jönsson³

et al. 2022

Preprint

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Wi-Fi 7 is already in the making, and Multi-Link Operation (MLO) is one of the main features proposed in its correspondent IEEE 802.11be amendment. MLO will allow devices to coordinate multiple radio interfaces to access separate channels through a single association, aiming for improved throughput, network delay, and overall spectrum reuse efficiency. In this work, we study three reference scenarios to evaluate the performance of the two main MLO implementations-Multi-Link Multi-Radio (MLMR) and Multi-Link Single-Radio (MLSR)-, the interplay between multiple nodes employing them, and their coexistence with legacy Single-Link devices. Importantly, our results reveal that the potential of MLMR is mainly unleashed in isolated deployments or under unloaded network conditions. Instead, in medium-to high-load scenarios, MLSR may prove more effective in reducing the latency while guaranteeing fairness with contending Single-Link nodes.

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Time-Sensitive Networking in IEEE 802.11be: On the Way to Low-Latency WiFi 7

Cited by 73 publications

References 40 publications

All-Domain Fusion-Based Time Synchronization Protocol in SD-ATSN

All-Domain Fusion-Based Time Synchronization Protocol in SD-ATSN

Wireless user requirements for the factory workcell

Performance and Coexistence Evaluation of IEEE 802.11be Multi-link Operation

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