Page 49 - Kaleidoscope Academic Conference Proceedings 2022

Extended reality – How to boost quality of experience and interoperability

art of integrated satellite-terrestrial networks toward 6G has integrated network control system in the control plane. The
been presented in [16]. It describes various kinds of simple targeted integrated network control system would enable
integration architectures at the physical component levels monitoring the resource utilization and performance metrics
and their typical applications, characteristics, and of various network segments and controlling of their
challenges. Similarly, [17] has investigated the problem of resources dynamically to provide high-quality, end-to-end
inter-domain routing between the ground segments of communication services. It will enable ultra eMBB, ultra
satellite networks and traditional terrestrial Internet Service mMTC, and Ultra-Reliable Low Latency Communication
Provider (ISP) networks. (URLLC) services available anywhere and at any time. It
will also enable the provisioning of emerging applications
This work complements the above related work by such AR/VR, Immersive Living (IL), automated driving,
proposing an umbrella architecture of integrated network and other smart control systems by connecting billions of
control system for TN and NTN convergence in the control IoT devices and robots to the communication system.
plane. It provides an architectural framework in which
various functions can be integrated to make it useful for the Each network segment or network domain (e.g. B5G
design and orchestration of high-quality, reliable end-to-end cellular network, data network, GEO/MEO/LEO satellites,
communication services, and effectively control the and HAPS) is controlled in the control plane by its own
communication and computational resources of both TN control system. The control plane obtains monitoring data
and NTN segments on the basis of end-to-end service (i.e. control data) from the underlying network elements
performance. through network control internal interfaces. The control
data is collected, stored, updated, and shared by the control
3. SCENARIO OF TN AND NTN data service function. The control data service function
CONVERGENCE provides control data to the network control functions. The
network control functions process control data to assess the
In this section, we discuss the scenarios of TN and NTN current states of network elements and their performances,
convergence and their integrated network control system. predict their future states, and formulate control decisions
so that the network can meet service performance
3.1 Scenario of integrated network control requirements while optimally utilizing available
computational (i.e. CPU, GPU, and memory) and storage
Figure 1 shows an image of terrestrial and non-terrestrial resources as well as communication resources such as
networks collectively monitored and controlled from the

Diverse services
Ultra Ultra Ultra
eMBB m MTC URLLC
AR/VR/I L
I oT・Robots Auto-drive
Application service
requirements
Integrated network control system
AI
Closed-loop Integrated control
Integrated network control functions data services

Integrated network control interfaces
Control commands Control data

Network control external interfaces
Network HAPS, MEO,
Data-plane control Control data Drones LEO GEO
connectivity Control
functions service
Network control internal interfaces
5G, B5G Data
cellular network
Photonic network

Individual network segments or domains
(Multiple technologies, varied capacity, latency, reliability, coverage)

Figure 1 - Scenario of TN and NTN convergence through integrated network control system

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