Network Slice Congestion Control via Base Station Reject Messages

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Solution Overview

Problem

Network slicing in communication systems faces congestion issues due to independent resource management, leading to aggravated congestion when multiple slices are accessed simultaneously, affecting overall system performance.

Innovation Solution

A method is introduced where user terminals and base stations exchange access stratum messages containing slice information, with the base station sending reject messages indicating congestion and backoff times, allowing the user terminal to back off from congested slices, thereby preventing further congestion and optimizing resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a user terminal accesses multiple network slices simultaneously, then the network can provide diverse services, but congestion in one slice can be aggravated and affect other slices

Engineering Contradiction:

Improvenetwork service diversityVSAvoidcongestion control

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the network into independent network slices, each with dedicated resources and independent congestion control. When congestion is detected in one slice, the base station can selectively reject access requests for that specific slice while allowing access to other non-congested slices, preventing congestion from affecting the entire network.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements slice-specific congestion control where each network slice has its own congestion status and control parameters. The base station maintains separate congestion information for each slice and applies local quality control by rejecting or accepting access requests based on the specific slice's congestion state, rather than applying uniform control across all slices.

Inventive Principle:

Principle #3Local quality

2Reliability

If the base station rejects access requests for congested network slices, then congestion is prevented from worsening, but user terminal access is delayed

Engineering Contradiction:

Improvecongestion controlVSAvoidaccess delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements periodic congestion checking and dynamic access control. The base station continuously monitors congestion status and periodically evaluates access requests against current slice conditions. This allows the system to quickly switch between accepting and rejecting access based on real-time congestion levels, minimizing unnecessary delays when slices become available.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent employs dynamic congestion control where the base station's access decision-making is flexible and adaptive. The system dynamically adjusts between accepting and rejecting access requests based on real-time slice congestion status, rather than using static rules. This dynamic approach allows quick response to changing network conditions, reducing access delays when congestion subsides.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20240373278A1Method of processing network slice based congestion, device and system thereof

Publication Date: 2024.11.07 VIVO MOBILE COMM CO LTD

AI summary

A method of processing a network slice based congestion, a device and a system thereof are provided. The method includes: receiving a message sent by a network including slice congestion information; and backing off a target network slice corresponding to the slice congestion information, according to the slice congestion information.