Network Node Session Category Indication for Priority Call Handling

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Solution Overview

Problem

Current wireless communication networks lack an efficient mechanism to identify and prioritize communication sessions, particularly emergency calls, which can lead to misalignment in resource allocation and failed high-priority calls due to insufficient capabilities or operator preferences.

Innovation Solution

A method where a network node transmits an indication of the communication session category to a radio network node during session establishment, enabling the radio network node to make informed decisions about resource allocation and mobility, such as EPS Fallback, based on the indicated category.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual configuration is used to identify priority calls at the radio network node, then the node can handle high-priority calls, but the complexity and error-proneness of configuration increases

Engineering Contradiction:

Improvecall prioritization accuracyVSAvoidconfiguration complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary mechanism where the core network node sends category indications to the radio network node. This intermediary approach allows the radio network node to identify priority calls without requiring complex manual configuration, as the category information is automatically provided by the core network through existing signaling interfaces.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The radio network node is designed to automatically handle call prioritization by receiving and processing category indications from the core network. This self-service mechanism eliminates the need for manual configuration at the radio network node, allowing it to autonomously prioritize calls based on the received category information while reducing configuration complexity.

Inventive Principle:

Principle #25Self-service

2Speed

If the radio network node autonomously identifies emergency calls without category indication, then it can respond quickly, but it may misidentify calls due to insufficient capabilities

Engineering Contradiction:

Improvecall identification speedVSAvoidcall category identification accuracy

Core Design Contradiction:

SpeedVSMeasurement precision

Solution Approach 1:

The core network node performs preliminary action by determining and indicating the category of communication sessions to the radio network node before the radio network node needs to make prioritization decisions. This preliminary provision of category information enables the radio network node to quickly and accurately identify emergency calls without having to perform complex analysis itself.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the core network node provides category indications to the radio network node based on its assessment of call priorities. This feedback loop ensures that the radio network node receives accurate category information, enabling precise call identification while maintaining fast response times.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20220201553A1Radio network node, network node and methods performed therein for controlling transmission

Publication Date: 2022.06.23 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Embodiments herein relates to a method performed by a network node for handling a communication session or one or more flows of the communication session in a wireless communication network. The network node transmits an indication to a radio network node at a session establishment of the communication session or of at least one flow of the communication session, wherein the indication indicates a category of the communication session or the at least one flow.