WTRU Service Priority Differentiation for Network Congestion

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

3GPP-based networks experience congestion due to high traffic volumes, which can negatively impact important transmissions by causing stiff competition for transmission resources and services, leading to inefficiencies and potential service disruptions.

Innovation Solution

Implementing techniques that allow wireless transmit/receive units (WTRUs) to differentiate between service requests, prioritizing certain services over others by using unique establishment causes or service indications, and employing barring mechanisms to manage congestion, such as access class barring, service-specific access barring, and extended access barring, to optimize resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If network resources are allocated to handle large volumes of traffic, then network capacity and coverage are improved, but congestion occurs leading to service disruptions for critical transmissions

Engineering Contradiction:

Improvenetwork capacityVSAvoidservice continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments network services into different priority levels (e.g., emergency services, voice communications, data transmissions) and allocates resources differently for each segment. This allows critical services to be guaranteed during congestion while still handling large volumes of non-critical traffic, resolving the contradiction between network capacity and service reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different quality of service (QoS) parameters and resource allocation strategies to different services locally. Critical services receive prioritized resource allocation, guaranteed bit rates, and lower latency treatment, while non-critical services receive best-effort service. This local differentiation maintains reliability for important transmissions even when overall network capacity is strained.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If transmission resources are allocated to multiple services simultaneously, then service versatility is improved, but congestion occurs causing stiff competition for resources

Engineering Contradiction:

Improveservice support capabilityVSAvoidcongestion impact

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent implements dynamic resource allocation where the network can adjust resource distribution in real-time based on service priority, network conditions, and current traffic loads. During congestion, the system dynamically shifts resources from lower-priority services to higher-priority services, maintaining versatility while reducing congestion impact through adaptive resource management.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes key parameters such as QoS class identifiers, priority levels, and resource block allocations based on service type and network conditions. By adjusting these parameters dynamically, the network supports multiple services simultaneously while mitigating congestion effects on critical transmissions through parameter-based differentiation.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If network resources are allocated to handle diverse traffic types, then network functionality is improved, but resource allocation efficiency decreases due to congestion

Engineering Contradiction:

Improvetraffic handling capabilityVSAvoidresource allocation efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent establishes preliminary resource reservations and QoS profiles for different service types before congestion occurs. Critical services are pre-configured with guaranteed resources and priority levels, ensuring that when congestion happens, resource allocation efficiency is maintained because the allocation decisions have already been predetermined based on service importance rather than being made reactively during congestion.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11792830B2Systems and methods for handling priority services congestion

Publication Date: 2023.10.17 INTERDIGITAL PATENT HOLDINGS INC

AI summary

Techniques for congestion management in a communication network are contemplated. For example, a wireless transmit receive unit (WTRU) may include a Radio Resource Control (RRC) layer and a Non-Access Stratum (NAS) layer. The RRC layer may receive an indication for a service, for example from the NAS. The indication may be interpreted as a request for the particular service indicated. For example, the indicated service may correspond to at least one of: a mobile originated (MO) voice communication, a circuit switched fallback (CSFB) supplementary service (SS), or a MO short message service (SMS). The RRC layer may receive a signal from a network indicating that one or more services provided by the network are allowed. The RRC layer may send a connection request to the network for the service sought by the NAS if that service is one of the one or more services allowed.