Mobility Management Device Uplink Data Processing

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Solution Overview

Problem

In overloaded mobility management devices, the existing data processing methods in communication systems lead to signaling waste and communication quality issues due to the need to set up and release bearers for IoT devices, especially when the S11-U bearer is not established, affecting the transmission of uplink NAS data packets.

Innovation Solution

A method where the mobility management device instructs terminal devices to transmit uplink data through the user plane when overloaded, discarding unprocessed control plane data and using a back-off timer to manage signaling, thereby avoiding the setup and release of unnecessary bearers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobility management device uses control plane to transmit uplink NAS data packets, then the data can be transmitted through the core network, but the device becomes overloaded and signaling waste occurs when bearers are set up and released

Engineering Contradiction:

Improvedata transmission reliabilityVSAvoiddevice processing capacity

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent applies dynamics by enabling the mobility management device to dynamically switch between control plane and user plane transmission modes based on its processing load state. When overloaded, the device transitions to user plane transmission to offload control plane processing, thereby maintaining data transmission reliability while improving device processing capacity utilization.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the transmission mode parameter from control plane to user plane when the mobility management device detects overload conditions. This parameter change allows the system to maintain reliable data transmission while reducing the processing burden on the mobility management device, effectively resolving the contradiction between reliability and productivity.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If the mobility management device sets up S11-U bearer for IoT devices, then data transmission is enabled, but unnecessary bearer setup and release causes signaling waste

Engineering Contradiction:

Improvedata transmission efficiencyVSAvoidsignaling resource consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent extracts the data transmission function from the control plane to the user plane when the mobility management device is overloaded. This extraction eliminates the need to set up and release S11-U bearers for IoT devices, thereby improving data transmission efficiency while reducing signaling resource consumption associated with bearer management.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The user plane acts as an intermediary mechanism that enables data transmission without requiring the mobility management device to manage bearers. By using the user plane as an intermediary, the system achieves efficient data transmission while avoiding the signaling overhead and resource consumption associated with bearer setup and release in the control plane.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the mobility management device processes all uplink data through control plane, then centralized management is achieved, but communication quality deteriorates when overloaded

Engineering Contradiction:

Improvecentralized management capabilityVSAvoidcommunication quality

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies dynamics by enabling the mobility management device to adapt its processing mode based on load conditions. When not overloaded, centralized control plane processing maintains ease of operation. When overloaded, switching to user plane transmission maintains communication quality by offloading processing tasks, thus resolving the contradiction between centralized management capability and communication quality.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements beforehand cushioning by preparing alternative user plane transmission paths in advance. When overload conditions occur, the system can quickly switch to these pre-prepared paths to maintain communication quality, cushioning against the deterioration that would otherwise occur due to centralized processing limitations.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS11272399B2Data processing method, mobility management device, and terminal device

Publication Date: 2022.03.08 HUAWEI TECH CO LTD

AI summary

A data processing method and apparatus, and a terminal device are described. The method includes: receiving, by a mobility management device, uplink data sent by a terminal device by using a NAS message, and determining, based on a processing capability of the mobility management device, whether the mobility management device is overloaded; and when the mobility management device is overloaded, instructing, by the mobility management device, the terminal device to transmit the uplink data through a user plane. The data processing method and apparatus may improve communication quality, especially when a bearer between the mobility management device and a service device is not set up, the bearer does not need to be first set up and then released, saving signaling and resources.