IAB Mesh Routing with Discovery Parameters for Wireless Backhaul

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Solution Overview

Problem

Future wireless communications networks face challenges in efficiently supporting a wide range of devices with diverse data traffic profiles and types, including reduced complexity devices and high-resolution displays, while also providing efficient wireless backhauling mechanisms for infrastructure equipment.

Innovation Solution

A method and system for determining routes in an Integrated Access Backhaul (IAB) mesh zone using discovery and route selection parameters to connect IAB nodes, enabling efficient packet transmission through multiple nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless backhaul is implemented using IAB nodes to interconnect infrastructure equipment, then network coverage and connectivity are improved, but route determination complexity and signaling overhead increase

Engineering Contradiction:

Improvenetwork coverageVSAvoidroute determination complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by having the routing control unit transmit discovery parameters to IAB nodes in advance, enabling them to determine discoverable neighbors before actual data transmission occurs. This pre-establishment of topology information simplifies subsequent route determination processes.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary approach by using discovery parameters and route selection parameters as mediators between the routing control unit and IAB nodes. These parameters facilitate efficient route determination without requiring complex real-time computations at each node.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If discovery parameters are transmitted to all IAB nodes to enable neighbor discovery, then network flexibility and dynamic route selection are improved, but signaling overhead and network traffic increase

Engineering Contradiction:

Improvenetwork flexibilityVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies local quality by transmitting discovery parameters selectively to specific IAB nodes based on their roles and positions in the network. The routing control unit determines which nodes require discovery capabilities, avoiding unnecessary signaling to all nodes uniformly.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent uses parameter changes by dynamically adjusting discovery parameters and route selection parameters based on network conditions, node capabilities, and traffic requirements. This allows the system to optimize signaling overhead while maintaining necessary network flexibility.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12402061B2Methods, infrastructure equipment and wireless communications networks

Publication Date: 2025.08.26 SONY GROUP CORP

AI summary

A method for determining a route in an Integrated Access Backhaul “IAB” mesh zone. The method comprises transmitting, to each IAB node of a plurality of IAB nodes, one or more discovery parameters for each IAB node; determining one or more route selection parameters for each IAB node to select a route; a first IAB node of the plurality of IAB nodes determining, based on the one or more discovery parameters, that a second IAB node of the plurality of IAB nodes is discoverable; and upon receiving a packet, selecting a route from the first IAB node based on the one or more route selection parameters and on the first IAB node determining that the second IAB node is discoverable.