P2P CBRS Communication Configuration via SAS Grant

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Solution Overview

Problem

Current 5G technologies face challenges in efficiently configuring peer-to-peer Citizens Broadband Radio Service (CBRS) communications within shared radio spectrum bands, potentially interfering with higher-priority users and not fully utilizing available spectrum, due to the need for Spectrum Access System (SAS) grants and geographic location management.

Innovation Solution

A method and system where a base station sends a CBRS spectrum request to a SAS, receives a grant, and configures user equipment (UEs) for peer-to-peer communication within a geofenced area, ensuring communication only occurs within specified geographic and temporal boundaries, preventing interference with higher-priority users and optimizing spectrum usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If peer-to-peer CBRS communication is configured without SAS grant, then communication setup speed is improved, but interference with higher-priority users occurs and spectrum protection is compromised

Engineering Contradiction:

Improvecommunication setup speedVSAvoidspectrum protection reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The base station proactively requests and obtains SAS grants in advance before P2P communication is needed. The grant information including geographic boundaries and spectrum parameters is pre-configured and stored, allowing UEs to immediately establish P2P communication without real-time SAS interaction while ensuring spectrum protection through pre-validated grant parameters.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If geofence monitoring is continuously performed, then interference prevention is improved, but device power consumption and processing load increase

Engineering Contradiction:

Improveinterference preventionVSAvoiddevice power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Instead of continuous monitoring, the UE performs geofence boundary checks at periodic intervals or at specific communication events (e.g., before each transmission). The base station also periodically updates geofence information when spectrum conditions change, reducing power consumption while maintaining interference prevention through event-triggered and periodic monitoring.

Inventive Principle:

Principle #19Periodic action

3Productivity

If multiple UEs share the same CBRS resources, then spectrum utilization is improved, but coordination complexity and interference management difficulty increase

Engineering Contradiction:

Improvespectrum utilizationVSAvoidcoordination complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The base station acts as an intermediary that centrally manages P2P resource allocation. It receives SAS grants, determines appropriate resource blocks for multiple UE pairs, and distributes resource allocation information to participating UEs. This centralized coordination through the base station simplifies the complexity for individual UEs while enabling efficient multi-UE spectrum sharing through unified resource management.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11864195B2Peer-to-peer citizens broadband radio service grant

Publication Date: 2024.01.02 GOOGLE LLC

AI summary

This document describes methods, devices, systems, and means for a peer-to-peer Citizens Broadband Radio Service, CBRS, grant. A base station sends a CBRS spectrum request to a Spectrum Access System, SAS, receives a CBRS spectrum grant from the SAS, and transmits a configuration for peer-to-peer, P2P, CBRS communication to at least a first UE that is effective to enable the first UE and a second UE to conduct P2P communication based on the configuration for P2P CBRS communication.