Dynamic Spectrum Access (DSA) is Spectrum Bridge’s unique and patented spectrum management solution which enables methods of dynamic spectrum allocation. DSA extends the Managed Spectrum Access technology model by allowing network operators and end users to manage spectrum availability and fulfill spectrum needs in specific terms: frequency, geography, time, intended use, cost and quality of service. DSA also provides the means to provision and allocate licensed spectrum. Applications are well described in the FCC’s recent proceedings and Notice of Proposed Rulemaking on Commercial Operations in the 3550-3700 MHz Band.
In order to cope with this level of complexity in real-time, a policy engine has been developed to manage the spectrum allocation process according to provisioned constraints and a regulatory framework. Network operators or regulators may provision or specify an array of spectrum management policies such as interference levels, transmit power, consumption limits, co-existence thresholds and allocation methodologies. This centrally managed implementation eliminates the need for complex and costly subscriber radios, increases spectral efficiency and provides network operators with a comprehensive real-time view of network performance.
Our cloud-based DSA technology can best be characterized by the following functions:
- Spectrum Allocation Engine – The Allocation Engine optimizes spectrum allocations, so that spectrum consumption and network efficiency are optimized when fulfilling spectrum requests. The processor considers network operator and user constraints defined in terms of geographic area, bandwidth, time, quality of service, and regulatory constraints. The Allocation Engine receives spectrum requests, identifies and allocates available spectrum, tracks spectrum use and provides a dashboard for Operators and Regulators.
- Spectrum Supply Manager – The platform is fully configurable so spectrum holders and network operators can specify operating constraints such as permissible co-channel and adjacent channel interference thresholds, transmit power limits, transmit power spectral density, sensing intervals, and permissible modulations. The ability to actively manage spectrum use policies lends network operators the ability to optimize performance based on real-time feedback, facilitate an RF environment compatible with expected performance, and maintain compliance with regulatory requirements.
- Coexistence Manager – Ensures co-located users can attain expected levels of performance through coordinated operation. The Coexistence Management processor utilizes derived and actual RF environmental data and radio feedback to mitigate the effects of RF interference and guides channel selection on a real time basis. The Coexistence Manager also allows many of the processes traditionally executed by stand-alone cognitive radios to be executed and managed in the cloud, reducing complexity of the end user radio. The Coexistence Manager is responsible for spectrum use analysis, interference detection, interference mitigation, suggesting optimal spectrum allocation, and maintaining coexistence statistics.
Spectrum Bridge provides cloud-based spectrum management and embedded software solutions that are the critical components within the Authorized Shared Access ecosystem. This technology was designed to manage dense, adjoining or co-located asynchronous wireless ecosystems that require unencumbered spectrum, ensure quality of service and interference free operation. It can also be applied as a working management platform to virtually any wireless ecosystem proposed to date, including TV White Space.