
Frequency sharing can be a game-changer for organizations with multiple devices or applications that require access to the same frequency band. By sharing frequencies, they can reduce costs and optimize their use of resources.
One of the key benefits of frequency sharing is increased efficiency. According to research, frequency sharing can lead to a 20-30% reduction in costs associated with frequency allocation and usage.
Sharing frequencies also allows for greater flexibility and adaptability. With frequency sharing, organizations can quickly adjust to changing needs and priorities, without the need for costly and time-consuming frequency reallocation processes.
However, frequency sharing also presents some challenges. For example, it can be difficult to coordinate and manage frequency sharing among multiple parties, which can lead to conflicts and inefficiencies.
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Spectrum Sharing Approaches
Spectrum sharing can be implemented through different techniques based on frequency, time, or location. This is realized on the basis of appropriate technical parameters, the number of tiers, or the priority layers of spectrum access, and spectrum access arrangements such as a static or dynamic way.
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The Collective Use of Spectrum (CUS) model allows an undetermined number of independent users to access spectrum in the same range of frequencies simultaneously. They must be in a particular geographic area and meet a well-defined set of conditions specified in spectrum regulations.
Under the European Electronic Communications Code, Member States shall promote the shared use of radio spectrum between similar or different uses, while respecting competition law. This includes facilitating the shared use of radio spectrum under general authorisations and limiting granting the use of spectrum to individual users only in certain cases.
Spectrum sharing can be achieved through different regulatory approaches, notably by the Collective Use of Spectrum (CUS) model, Licensed Shared Access (LSA) model, or a combination of both. The main difference between these approaches lies in the regulatory guarantees for accessing shared bands.
The EU's Radio Spectrum Policy Programme (RSPP) of 2012 sets out the framework for efficient and effective spectrum management. It requires Member States to foster the collective use and shared use of spectrum where appropriate.
Here are the different regulatory approaches to spectrum sharing:
- Collective Use of Spectrum (CUS): allows multiple users to access spectrum simultaneously without a licence.
- Licensed Shared Access (LSA): grants individual rights to access a shared frequency band.
- Combination of both: a hybrid approach that combines the benefits of CUS and LSA.
Benefits of Spectrum Sharing
Shared spectrum offers numerous benefits, including low entry barriers, certainty of access, and low administrative burden. This makes it an attractive option for users.
The CUS model allows for the simultaneous access of spectrum in the same range of frequencies, which is particularly useful for short-range devices like Wi-Fi routers and Ultra wide-band wireless technologies. These devices can benefit from the dynamic allocation of frequencies based on current demand.
Shared spectrum can also contribute to a reduction in the carbon footprint of telecommunications infrastructure, potentially leading to more sustainable wireless ecosystems. This is achieved through improved spectrum efficiency, which can accommodate more users and optimize the use of finite spectrum resources.
By sharing spectrum, users can reduce costs and make it more affordable for each participant. This democratization of access is particularly advantageous for smaller companies and startups, which might otherwise be priced out of the market for spectrum access.
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Cost Savings
Cost savings for users is a significant benefit of shared spectrum. In traditional spectrum allocation models, individual entities typically pay for exclusive rights to certain frequencies, which can be a significant expense.
This can price out smaller companies and startups, making it difficult for them to access the spectrum they need. However, with shared spectrum, these costs are distributed among multiple users, making it more affordable for each participant.
By sharing spectrum, resources are used more judiciously, fostering innovation and competition across different sectors reliant on wireless communication. This is particularly advantageous for smaller companies and startups that might otherwise be priced out of the market for spectrum access.
Social and Environmental Benefits
The social and environmental benefits of spectrum sharing are numerous. By improving spectrum efficiency, shared spectrum can contribute to a reduction in the carbon footprint of telecommunications infrastructure.
This can lead to more sustainable wireless ecosystems, which is a great step towards a more environmentally friendly future.
Shared spectrum can also help bridge the digital divide by making connectivity more available to underserved and rural areas.
Spectrum Management
Spectrum management is crucial for efficient frequency sharing. The European Union's Radio Spectrum Policy Programme (RSPP) of 2012 sets the framework for effective spectrum management, promoting the collective use and shared use of spectrum where appropriate.
To achieve this, Member States are required to foster the shared use of spectrum, while respecting competition law. They should facilitate the shared use of radio spectrum under general authorisations and limit granting the use of spectrum to individual users only in certain cases.
The Collective Use of Spectrum (CUS) model allows an undetermined number of independent users to access spectrum in the same range of frequencies simultaneously, with low entry barriers and a low administrative burden.
The CUS model is particularly beneficial for applications such as Radio Frequency Identification Devices (RFID), intelligent transport systems, and Ultra wide-band (UWB) wireless technologies. These technologies can share frequencies with other applications without causing harmful interference.
Shared spectrum can substantially enhance the efficiency of spectrum usage, leading to more optimal utilization and improved network efficiency. Cognitive radio technologies can enable devices to sense and adapt to the environment, using available frequencies without causing interference.
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EU Spectrum Sharing Policy
The EU has a framework in place for spectrum sharing, established by the Radio Spectrum Policy Programme (RSPP) of 2012.
The RSPP requires Member States to foster the collective use and shared use of spectrum where appropriate, to enhance efficiency and flexibility.
The European Electronic Communications Code (EECC) of 2018 considers the promotion of shared use of radio spectrum a major driver for achieving its main objectives.
These objectives include promoting competition, the internal market, citizens' and businesses' interests, and connectivity.
Member States are responsible for promoting shared use of radio spectrum between similar or different uses, while respecting competition law.
They should facilitate shared use under general authorisations and limit individual use of spectrum only in certain cases.
These cases include maximising efficient use in light of demand or minimising issues of harmful interference.
Member States should take into account the development of reliable conditions for radio spectrum sharing and combining general authorisation and individual rights of use.
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The RSPP aims to ensure effective and efficient use of radio spectrum, as well as promoting coverage.
The RSPG Work Programme for 2020 and beyond included a specific work item on spectrum sharing.
The RSPG Opinion on Spectrum Sharing – Pioneer initiatives and bands from June 2021 provides high-level directions concerning options for promoting spectrum sharing.
The Opinion considers all spectrum bands as potential candidates for introducing and enhancing spectrum sharing solutions.
It recommends actions to favour the introduction of innovative and more dynamic spectrum sharing solutions.
These actions include sharing experiences and coordinated action, as well as introducing more dynamic and multi-country, cross-border cases with an EU footprint.
Spectrum Management Future
The future of spectrum management is exciting and rapidly evolving. With the increasing demand for wireless connectivity, shared spectrum is becoming a crucial paradigm in spectrum management.
The EU's Radio Spectrum Policy Programme (RSPP) of 2012 sets out the framework for efficient and effective spectrum management, promoting the collective use and shared use of spectrum where appropriate.
The RSPP requires Member States to foster the collective use and shared use of spectrum, while respecting competition law. This approach aims to enhance efficiency and flexibility in spectrum management.
In the EU, the promotion of shared spectrum is considered a major driver for achieving the main objectives of the European Electronic Communications Code (EECC) of 2018. The EECC promotes competition, the internal market, citizens' and businesses' interests, and connectivity.
Shared spectrum can be implemented through different techniques, including frequency, time, or location sharing. The choice of technique depends on the specific use case and the technical parameters of the spectrum.
The Collective Use of Spectrum (CUS) model is a popular approach to shared spectrum, allowing an undetermined number of independent users to access spectrum in the same range of frequencies simultaneously. This model is particularly useful for short-range devices, such as Radio Frequency Identification Devices (RFID) and Wi-Fi routers.
The CUS model has several advantages, including low entry barriers, certainty of access, and low administrative burden. However, it requires users to share spectrum efficiently and manage interference effectively.
In addition to cost savings, shared spectrum can substantially enhance the efficiency of spectrum usage. Dynamic allocation based on current demand can lead to more optimal utilization of spectrum resources.
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The future of spectrum management will likely involve a blend of methods for various needs, as Dr. Matthew Clark suggests. This approach will require establishing interference thresholds for new spectrum users to meet, ensuring existing users of continued operation.
The CSPS paper identifies security, privacy, and enforcement challenges inherent in a sharing-based system. However, it also highlights the value of policies that facilitate spectrum access, including the success of the 2015 Federal Communications Commission (FCC) spectrum auction.
The FCC's 2016 auction allowed two or more stations to share a single 6 MHz television channel while retaining their licenses and all rights. This approach has been successful in reducing costs and improving efficiency in spectrum management.
The RSPG Opinion on Spectrum Sharing – Pioneer initiatives and bands from June 2021 provides high-level directions concerning options for promoting spectrum sharing. The Opinion recommends actions to favour the introduction of innovative and more dynamic spectrum sharing solutions.
Here are some key recommendations from the RSPG Opinion:
- Introduce more dynamic and multi-country, cross-border cases with an EU footprint.
- Collaborate in research and development projects.
- Share experiences and coordinated action.
- Introduce new forms of licensing and more dynamic spectrum sharing take-up methods using databases and Licensed Shared Access.
These recommendations aim to improve spectrum sharing in the EU beyond static and conservative methods. By implementing these actions, the EU can promote more efficient and effective spectrum management, meeting the increasing demands of wireless connectivity.
Challenges and Considerations
The world is demanding greater access to WiFi, 5G networks, smart grids, connected vehicles, satellite communications and more, but the frequency space for that connectivity is getting hard to come by.
Spectrum sharing is a key solution to this problem, but it comes with its own set of challenges. The White House has called for the creation of a national spectrum strategy to address these issues.
Establishing interference thresholds for new spectrum users is a practical way to ensure continued operation for existing users. This approach can help avoid costly case-specific studies.
Assessing the value of spectrum sharing for new services can be difficult, but it's not impossible. The success of the 2015 Federal Communications Commission spectrum auction, which raised $41 billion from cellular operators, is a good example of the value of spectrum sharing.
Security, privacy, and enforcement challenges are inherent in a sharing-based system. These challenges need to be carefully considered when implementing spectrum sharing policies.
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Frequently Asked Questions
Do radio stations share frequencies?
Yes, radio stations can share frequencies, but only if they are separated geographically or use the frequency at different times. This is known as frequency sharing or channel sharing in telecommunications.
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