Virtual CBSD Remote Unit Identification in DCS
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Solution Overview
Problem
Distributed communications systems (DCSs) face challenges in managing Citizens Band Radio Service (CBRS) spectrum allocation and transmission power control due to the inability of Spectrum Access Systems (SAS) to uniquely identify remote units, leading to potential interference and non-compliance with FCC requirements.
Innovation Solution
Implementing a CBRS control circuit that generates unique parameter sets to identify remote units as virtual CBSDs, allowing the SAS to manage channels and transmission power effectively, thereby facilitating compliance with FCC regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a DCS uses a single CBSD cell identification for all remote units, then the system structure is simplified, but the SAS cannot uniquely identify each remote unit for channel assignment and power control
Solution Approach 1:
The patent segments the identification system by creating unique CBRS parameter sets for each remote unit while maintaining a single unified CBSD cell identification at the system level. This allows the SAS to distinguish between individual remote units (granular identification) without requiring multiple separate CBSD identities (system-level simplification), thus resolving the contradiction between system simplicity and identification precision.
2Device complexity
If the DCS presents all remote units as a single CBSD to the SAS, then the interface complexity is reduced, but CBRS compliance and spectrum management become impossible
Solution Approach 1:
The patent introduces an intermediary layer (the CBRS parameter sets) between the unified CBSD interface and the individual remote units. This intermediary enables the SAS to manage each remote unit independently for compliance purposes while the DCS maintains a simplified single-CBSD interface structure, thus resolving the contradiction between interface simplicity and regulatory compliance.
3Measurement precision
If unique identifiers are assigned to each remote unit, then SAS can perform precise channel assignment and power control, but the system complexity increases
Solution Approach 1:
The patent changes the identification parameters by using CBRS parameter sets (which include unique identifiers for each remote unit) rather than creating entirely separate CBSD identities. This parameter-level differentiation allows precise remote unit identification and SAS control while avoiding the complexity of multiple full CBSD implementations, thus resolving the contradiction between identification precision and system complexity.
Data Source
AI summary
Distributed communications systems (DCSs) supporting virtualization of remote units as citizens band radio service (CBRS) devices (CBSDs) are disclosed. In examples discussed herein, the DCS includes a routing circuit that is coupled to a number of remote units configured to communicate a downlink communications signal(s) and an uplink communications signal(s) in one or more CBRS channels. In this regard, a CBRS control circuit is provided to present each of the remote units as a uniquely identifiable virtual CBSD to a spectrum access system (SAS) and facilitate communications between the SAS and the remote units. As such, the SAS may be able spoofed to treat the uniquely identifiable virtual CBSD as real CBSDs to uniquely identify each of the remote units for CBRS channel assignment and/or transmission power control. As a result, it may be possible to support CBRS in the DCS in compliance with the Federal Communications Commission (FCC) requirements.