MCPTT Server Priority Management for Wireless QoS

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Solution Overview

Problem

Current communication systems fail to effectively prioritize services in mission-critical push to talk (MCPTT) systems, leading to inadequate quality of service (QoS) and inefficient resource management during emergency situations.

Innovation Solution

A method and apparatus for setting and managing priority levels for users, groups, and services in MCPTT systems, allowing for prioritization of services based on user and group subscriptions, and dynamically adjusting media resources to ensure high-priority services are maintained during emergencies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple services are provided simultaneously in MCPTT systems, then service coverage and functionality are improved, but resource competition and QoS degradation occur

Engineering Contradiction:
Improveservice coverageVSAvoidquality of service
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies local quality by assigning different priority levels to different services, users, and groups. High-priority services (e.g., emergency calls) receive preferential resource allocation while low-priority services receive standard allocation. This differential quality assignment resolves the contradiction by ensuring critical services maintain reliable QoS even when multiple services operate simultaneously.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent changes the parameter of service priority levels dynamically. The MCPTT server adjusts resource allocation parameters based on service priority, user subscription, and group characteristics. When resources are limited, the system changes allocation parameters to favor high-priority services, thereby maintaining QoS reliability while supporting multiple services.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If priority-based resource allocation is implemented, then QoS for critical services is improved, but system complexity increases

Engineering Contradiction:
Improvequality of serviceVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-configuring priority levels, user subscriptions, and group characteristics before service execution. The MCPTT server stores priority information and subscription data in advance, allowing it to make rapid resource allocation decisions without complex real-time calculations. This reduces system complexity while maintaining reliable QoS for critical services.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism through the MCPTT server that mediates between multiple services and network resources. The server acts as a central coordinator that simplifies complexity by consolidating priority management and resource allocation logic in one entity, rather than requiring complex distributed coordination among all network elements.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Loss of time

If emergency services preempt ongoing services, then response time for emergencies is improved, but service continuity for non-emergency services deteriorates

Engineering Contradiction:
Improveresponse timeVSAvoidservice continuity
Core Design Contradiction:
Loss of timeVSDuration of action of stationary object

Solution Approach 1:

The patent applies preliminary anti-action by preparing the system to handle emergency preemption in advance. The MCPTT server is pre-configured with emergency priority levels and pre-established rules for service interruption. When an emergency service is detected, the system immediately executes pre-planned preemption actions, reducing response time while minimizing disruption to non-emergency services through automated restoration protocols.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentEP3314931B1Method and apparatus for providing service in a wireless communication system
Publication Date: 2022.12.21 SAMSUNG ELECTRONICS CO LTD
  • EP3314931B1 patent drawingFigure 1
  • EP3314931B1 patent drawingFigure 2
  • EP3314931B1 patent drawingFigure 3~4

AI summary

A method and an apparatus for providing a service in a wireless communication system are disclosed. The method and apparatus are directed to converging a 5th-generation (5G) communication system for supporting higher data rates beyond a 4th-generation (4G) system with a technology for Internet of things (IoT). The apparatus includes a terminal in the wireless communication system. The terminal includes a transceiver configured to transmit and receive a signal, and a processor configured to receive a first service request related to mission critical push to talk over LTE (MCPTT) over long term evolution (LTE), determine whether a first service corresponding to the first service request and a second service request being currently performed are simultaneously provided, and process the first service and the second service based on a priority of each of the service, services if the first service and the second service are not simultaneously provided.