Dynamic Spectrum Sharing in Wireless Communication Networks
Summary
Dynamic spectrum sharing enables multiple wireless systems or operators to access the same frequency bands in a coordinated and adaptive fashion. Driven by burgeoning mobile data demand, the proliferation of Internet of Things devices and the rollout of 5G and future 6G services, this paradigm seeks to overcome the limitations of static spectrum allocation. By employing real-time sensing, database assistance or policy-based coordination, dynamic sharing optimises spectral efficiency while safeguarding incumbent transmissions. Key technical strategies encompass cognitive radio techniques, cooperative beamforming, machine-learning-based resource management and fine-grained interference control. Global regulators are increasingly embracing shared access frameworks to unlock underutilised bands and foster competition. Practical deployments span urban small-cell networks, rural broadband extensions and vehicular communications, each illustrating the potential for enhanced throughput, reduced latency and improved quality of service without requiring extensive new spectrum allocations.
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Dynamic Spectrum Sharing in Wireless Communication Networks publication trend
The graph below shows the total number of articles in dynamic spectrum sharing in wireless communication networks across all publications each year (not limited to Nature Index journals).
Technical terms
Dynamic spectrum sharing: A method by which multiple systems or users access the same frequency bands adaptively and in real time.
Cognitive radio: A radio system capable of sensing spectrum usage and dynamically selecting channels to avoid interference with incumbents.
Spectral efficiency: The rate of information transmission per unit bandwidth, often measured in bits per second per hertz.
Millimetre wave (mmWave): Frequency bands roughly between 30 GHz and 300 GHz, offering large contiguous bandwidths for high-capacity links.
Multiple-input multiple-output (MIMO): An antenna technique using multiple transmit and receive elements to improve data rates and link reliability.
New Radio (NR): The 5G standardised air interface designed to support diverse deployment scenarios, including enhanced mobile broadband and ultra-reliable low-latency communication.
References
- Hybrid Transceiver Design and Optimal Power Allocation for the Cognitive mmWave Multiuser MIMO Downlink Relying on Limited Feedback. IEEE Open Journal of Vehicular Technology (2023).
- Dynamic Spectrum Sharing for Future LTE-NR Networks †. Sensors (2021).
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