GREEN WG CJ. Bernardos
Internet-Draft UC3M
Intended status: Standards Track M. Awais Jadoon
Expires: 31 August 2025 A. Mourad
InterDigital
27 February 2025
Integrated Sensing and Communications (ISAC) use case for GREEN
draft-bernardos-green-isac-uc-00
Abstract
Integrated Sensing and Communications (ISAC) represents a paradigm
shift in wireless networks, where sensing and communication functions
are jointly designed and optimized. By leveraging the same spectral
and hardware resources, ISAC enables advanced capabilities such as
environment perception, object tracking, and situational awareness,
while maintaining efficient and reliable data transmission. This
integration holds great potential for applications in areas such as
autonomous systems, smart cities, and industrial automation, where
precise sensing and low-latency communication are critical.
This document presents a use case related to ISAC, aiming to
facilitate discussions within the GREEN Working Group on the
potential benefits, challenges, and requirements. The use case
follows a structured template that we propose for all GREEN use
cases, ensuring consistency and comparability across different
scenarios.
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This Internet-Draft will expire on 31 August 2025.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Energy-Aware Smart City Traffic Management . . . . . . . . . 3
2.1. Use case description . . . . . . . . . . . . . . . . . . 3
2.2. GREEN Specifics . . . . . . . . . . . . . . . . . . . . . 3
2.3. Requirements for GREEN . . . . . . . . . . . . . . . . . 3
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 4
4. Security Considerations . . . . . . . . . . . . . . . . . . . 4
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 5
6. Informative References . . . . . . . . . . . . . . . . . . . 5
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 5
1. Introduction
Integrated Sensing and Communications (ISAC) is emerging as a key
enabler for next-generation wireless networks, integrating sensing
and communication functionalities within a unified system. By
leveraging the same spectral, hardware, and computational resources,
ISAC enhances network efficiency while enabling new capabilities such
as high-resolution environment perception, object detection, and
situational awareness. This paradigm shift is particularly relevant
for applications requiring both reliable connectivity and precise
sensing, such as autonomous vehicles, industrial automation, and
smart city deployments. Given its strategic importance, ISAC has
gained significant traction in standardization efforts. The ETSI
Industry Specification Group (ISG) on ISAC has been established to
explore technical requirements and use cases, while 3GPP has
initiated discussions on ISAC-related features within its ongoing
research on future 6G systems. Furthermore, research initiatives
within the IEEE and IETF are investigating how ISAC can be integrated
into network architectures, spectrum management, and protocol design,
making it a critical area of development in the evolution of wireless
networks.
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This document presents a use case related to ISAC, aiming to
facilitate discussions within the GREEN Working Group on the
potential benefits, challenges, and requirements. The use case
follows a structured template that we propose for all GREEN use cases
[I-D.stephan-green-use-cases], ensuring consistency and comparability
across different scenarios.
2. Energy-Aware Smart City Traffic Management
2.1. Use case description
This use case involves deploying ISAC systems in a smart city to
monitor and optimize vehicles' traffic flows while minimizing energy
consumption of the mobile network. The system integrates sensing
technologies, such as radar and LIDAR, with communication networks to
detect vehicle density, monitor road conditions, and communicate with
autonomous vehicles or traffic lights. By using ISAC, the system
minimizes redundant infrastructure (e.g., separate sensors and
communication equipment), thus reducing the overall carbon and energy
footprint.
2.2. GREEN Specifics
Energy Consumption Monitoring: Each ISAC component (e.g., roadside
units, integrated sensors, and communication transceivers) is capable
of reporting its energy consumption in real time to the centralized
or distributed energy management system.
Reconfiguration for Energy Efficiency: The system can dynamically
switch between high-resolution sensing modes (e.g., during peak
hours) and low-power modes (e.g., during low traffic periods). The
network can reconfigure traffic communication paths to prioritize
routes or nodes that consume less power, leveraging energy-efficient
communication protocols.
Integration of Local and Global Energy Goals: The system can operate
both locally (e.g., turning off specific roadside units in low-
traffic areas) and globally (e.g., modifying traffic patterns across
the city) to achieve defined energy consumption goals.
2.3. Requirements for GREEN
1. Measurement Granularity:
* Ability to measure energy consumption per ISAC component
(e.g., roadside unit, sensor, transceiver).
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* Granular reporting per communication link or sensing mode
(e.g., high-power radar mode vs. low-power mode).
2. Power Control Mechanisms:
* Ability to switch components on/off or place them in sleep/
standby mode when not in use.
* Support for dynamic adjustment of sensing resolution or
communication bandwidth to balance energy savings and system
performance.
3. Reconfiguration and Adaptability:
* Support for hardware reconfiguration (e.g., adaptive sensing
modes, transceiver settings) to optimize energy use.
* Mechanisms to steer traffic or adjust network routing based on
global or local energy-saving objectives.
4. Global Coordination:
* Capabilities for cross-domain coordination to enable global
optimization (e.g., city-wide traffic rerouting or dynamic
resource allocation across different regions).
* Ability to aggregate and analyze energy consumption data from
all ISAC components to inform high-level decision-making.
5. Energy-Aware Standards and Protocols:
* Communication protocols that minimize power usage while
maintaining reliability.
* Interoperability standards for energy-aware reconfiguration
across heterogeneous ISAC components and systems.
3. IANA Considerations
N/A.
4. Security Considerations
TBD.
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5. Acknowledgments
The work of Carlos J. Bernardos in this document has been partially
supported by the Horizon Europe MultiX (Grant Agreement No.
101192521) and Hexa-X-II (Grant Agreement No. 101095759) projects.
6. Informative References
[I-D.stephan-green-use-cases]
Stephan, E., Palmero, M., Claise, B., Wu, Q., and L. M.
Contreras, "Use Cases for Energy Efficiency Management",
Work in Progress, Internet-Draft, draft-stephan-green-use-
cases-00, 24 January 2025,
<https://datatracker.ietf.org/doc/html/draft-stephan-
green-use-cases-00>.
Authors' Addresses
Carlos J. Bernardos
Universidad Carlos III de Madrid
Av. Universidad, 30
28911 Leganes, Madrid
Spain
Phone: +34 91624 6236
Email: cjbc@it.uc3m.es
URI: http://www.it.uc3m.es/cjbc/
Muhammad Awais Jadoon
InterDigital Europe
Email: muhammad.awaisjadoon@interdigital.com
URI: http://www.InterDigital.com/
Alain Mourad
InterDigital Europe
Email: Alain.Mourad@InterDigital.com
URI: http://www.InterDigital.com/
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