Channel Discovery in Small-Cell Networks

Solution Overview

Problem

In small-scale networks like CBRS, the dynamic allocation of spectrum makes it difficult for electronic devices to preprogram the channels used, leading to time-consuming and power-intensive scans of the entire spectrum.

Innovation Solution

A radio node aggregates a list of active channels by listening for transmissions from other radio nodes, determining the channels used, and disseminating this information to other radio nodes and electronic devices, allowing them to restrict their scans to only the active channels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an electronic device performs a scan of the full CBRS spectrum to determine channels, then the device can discover active channels, but the scanning process becomes time-consuming and increases power consumption

Engineering Contradiction:

Improvechannel discovery accuracyVSAvoidscanning time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Radio nodes perform preliminary channel discovery and maintain updated lists of active channels in the network. When a new device joins, it receives pre-computed channel information from existing radio nodes, eliminating the need for full spectrum scanning and enabling immediate connection establishment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Existing radio nodes act as intermediaries that share channel discovery information with new devices. Instead of each device independently scanning the full spectrum, radio nodes mediate by providing curated lists of active channels, significantly reducing discovery time and power consumption

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If an electronic device performs a scan of the full CBRS spectrum to determine channels, then the device can discover active channels, but the power consumption increases

Engineering Contradiction:

Improvechannel discovery accuracyVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

Radio nodes perform preliminary channel discovery and maintain updated lists of active channels in the network. When a new device joins, it receives pre-computed channel information from existing radio nodes, eliminating the need for full spectrum scanning and enabling immediate connection establishment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Existing radio nodes act as intermediaries that share channel discovery information with new devices. Instead of each device independently scanning the full spectrum, radio nodes mediate by providing curated lists of active channels, significantly reducing discovery time and power consumption

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If channels are dynamically allocated in CBRS, then spectrum utilization is improved, but it becomes difficult to preprogram channels into electronic devices

Engineering Contradiction:

Improvespectrum utilizationVSAvoiddevice configuration

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The system transitions from static pre-programmed channel configurations to dynamic channel discovery. Radio nodes continuously monitor and update channel information, allowing devices to adapt to changing spectrum allocations without manual reconfiguration, maintaining ease of deployment while supporting dynamic spectrum utilization

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Radio nodes implement feedback mechanisms where discovered channel information is shared across the network. This creates a self-updating system where channel lists are automatically refreshed based on current spectrum usage, eliminating the need for manual device configuration while supporting dynamic allocation

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12213061B2Channel discovery in a small-cell network

Publication Date: 2025.01.28 OUTDOOR WIRELESS NETWORKS LLC

AI summary

During operation, the radio node may, using a first interface circuit, listen for transmissions from one or more second radio nodes. Based at least in part on the transmissions, the radio node may determine a first list of discovered channels associated with the radio node and the one or more second radio nodes. Then, the radio node may, using a second interface circuit, provide the first list of discovered channels to the one or more second radio nodes. Moreover, the radio node may, using the second interface circuit, receive one or more second lists of discovered channels from the one or more second radio nodes. Next, the radio node may aggregate the first list of discovered channels and the second list of discovered channels into a list of active channels. Furthermore, the radio node may, using the first interface circuit, provide the list of active channels to an electronic device.