IAB Mesh Routing Using Discovery Parameters for Multi-Hop Backhaul
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Solution Overview
Problem
Future wireless communications networks face challenges in efficiently supporting a wide range of devices with varying data traffic profiles and types, including reduced complexity devices and machine type communication devices, while also providing reliable wireless backhaul connectivity through a mesh structure.
Innovation Solution
A method and system for determining routes in an Integrated Access Backhaul (IAB) mesh zone using discovery and route selection parameters to select optimal paths between IAB nodes, facilitated by a routing control unit and IAB nodes equipped with transmitter, receiver, and controller circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless backhaul connectivity is provided through a mesh structure to support diverse devices, then network coverage and connectivity are improved, but route determination complexity and signaling overhead increase
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 perform neighbor node discovery before actual data transmission. This pre-establishment of discovery information simplifies subsequent route determination, as nodes already have cached discovery data ready for quick route selection without complex real-time calculations.
Solution Approach 2:
The routing control unit serves as an intermediary that centralizes the management of discovery parameters and route selection parameters. Instead of each IAB node independently performing complex discovery and route determination, the routing control unit coordinates these functions, transmitting necessary parameters to nodes and receiving route determination results, thereby reducing overall system complexity.
2Measurement precision
If discovery parameters are transmitted to all IAB nodes to enable neighbor node discovery, then route selection accuracy is improved, but signaling overhead and network traffic increase
Solution Approach 1:
The patent applies local quality by transmitting discovery parameters selectively to specific IAB nodes based on their roles and requirements in the mesh network. Rather than uniformly distributing identical parameter sets to all nodes, the routing control unit tailors parameter transmission to local needs, reducing redundant signaling while ensuring each node has the precise discovery information necessary for accurate route selection in its context.
3Reliability
If multiple route selection parameters are used to select optimal routes, then transmission reliability is improved, but processing time and computational load increase
Solution Approach 1:
The patent applies preliminary action by having IAB nodes determine routes based on pre-received route selection parameters before actual data transmission occurs. Nodes use these parameters to pre-calculate and establish optimal routes in advance, so when data needs to be transmitted, the route is already determined, minimizing real-time processing time while maintaining reliability through careful parameter-based route selection.
Data Source
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 LAB 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.