CBRS Relay Node Resource Allocation via Spectrum Access System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In Citizen Broadband Radio Service (CBRS) networks, existing systems face challenges in efficiently managing relay nodes, particularly in allocating resources such as spectrum and maximum Equivalent Isotropically Radiated Power (EIRP), which can lead to interference and degraded performance due to varying types and capabilities of relay nodes and differing traffic requirements.
Innovation Solution
The proposed solution involves a Spectrum Access System (SAS) that receives registration requests from Donor CBRS base station devices, including capabilities information about relay nodes, and performs enhanced resource allocation considering the type, location, and measurement reports of relay nodes to minimize interference and optimize performance. This includes optimizing channel allocations and TDD frame configurations, with the option of using a digital network application controller (DNA-C) for more comprehensive resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If relay nodes are deployed to extend coverage and capacity in CBRS networks, then network coverage and capacity are improved, but interference management becomes more complex and performance degrades due to varying relay node types and capabilities
Solution Approach 1:
The patent segments relay nodes into different types (Type 1 and Type 2) with distinct capabilities. Type 1 relay nodes can operate autonomously with their own SAS interface, while Type 2 relay nodes depend on donor CBSDs for resource allocation. This segmentation allows the system to manage complexity by treating different relay node types differently, enabling scalable deployment without overwhelming resource allocation complexity.
Solution Approach 2:
The patent introduces a new dimension to resource allocation by considering relay node type, location, and capabilities as additional parameters beyond traditional frequency and power allocation. The SAS performs enhanced resource allocation that operates in this expanded parameter space, optimizing channel assignments and TDD frame configurations based on multiple dimensions simultaneously.
2Reliability
If traditional resource allocation methods are used without considering relay node specifics, then allocation process is simple, but interference increases and performance degrades
Solution Approach 1:
The patent applies local quality by tailoring resource allocation to the specific characteristics of each relay node and its environment. The SAS considers local factors such as relay node type, geographic location, traffic requirements, and interference conditions to make optimized allocation decisions. This localized approach improves network performance by addressing specific local conditions rather than applying uniform allocation rules.
Solution Approach 2:
The patent changes multiple allocation parameters simultaneously, including channel assignments, maximum EIRP values, and TDD frame configurations. The SAS performs enhanced resource allocation that adjusts these parameters based on relay node capabilities, location, and network conditions, thereby improving performance through multi-parameter optimization rather than single-parameter control.
3Object-affected harmful factors
If enhanced resource allocation considering relay node type and location is implemented, then interference is minimized and performance is optimized, but system complexity and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by having relay nodes report their capabilities, location, and measurement data to the SAS before resource allocation decisions are made. The SAS performs enhanced resource allocation that proactively considers these pre-collected parameters to minimize interference before it occurs. This preliminary gathering of information enables preventive interference management rather than reactive correction.
Solution Approach 2:
The patent implements feedback mechanisms where relay nodes provide measurement reports and capability information to the SAS, which then adjusts resource allocation decisions accordingly. The system continuously monitors network conditions and refines channel assignments and power allocations based on this feedback, creating a closed-loop control system that reduces interference through iterative optimization.
4Productivity
If relay nodes are registered and resource allocation is optimized based on their capabilities, then network capacity and coverage are enhanced, but processing time and computational resources increase
Solution Approach 1:
The patent segments the resource allocation process into distinct phases: relay node registration and capability reporting, enhanced resource allocation by SAS, and configuration distribution to relay nodes. This segmentation allows processing to be distributed and optimized at each stage, improving network capacity while managing processing time through structured workflow management.
Data Source
AI summary
Presented herein are methodologies for managing a citizens broadband radio service (CBRS) network. The methodology includes at a spectrum access system (SAS), receiving, from a Donor CBRS base station device (CBSD), a registration request, the registration request including capabilities information about a CBRS Relay Node with which the Donor CBSD communicates, in response to the registration request, sending, from the SAS to the Donor CBSD, a registration response indicating successful registration of the CBRS Relay Node, in response to the registration response, receiving via the Donor CBSD a spectrum enquiry message from the CBRS Relay Node seeking a channel allocation from the SAS, and in response to the spectrum enquiry message, sending from the SAS, and via the Donor CBSD, a resource grant response to the CBRS Relay Node, wherein the resource grant response includes an allocated channel and a maximum EIRP for the allocated channel.