Wireless Connection Suspension and Resumption via Stored Context

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Solution Overview

Problem

Existing communication systems face inefficiencies in handling connections for devices like MTCs, leading to excessive signaling, resource consumption, and limitations on the number of devices that can be managed due to mandatory connection setup procedures, which impact battery life and network performance.

Innovation Solution

Implementing a suspension and resumption mechanism for wireless device connections, where connection data is stored in both the device and network nodes, allowing for faster transition between idle and active states without repeated setup, reducing signaling and resource consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mandatory connection setup procedures are performed for each data transfer, then connection reliability is ensured, but signaling overhead and resource consumption increase significantly

Engineering Contradiction:

Improveconnection reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent applies preliminary action by establishing connection parameters and context information before actual data transfer is needed. The network node stores connection data including security contexts, bearer configurations, and capability information in advance, allowing the wireless device to quickly resume connections without performing full setup procedures each time data needs to be transferred.

Inventive Principle:

Principle #10Preliminary action

2Loss of time

If connection parameters are stored in network nodes for later resumption, then connection setup time is reduced, but memory resources in network nodes are consumed

Engineering Contradiction:

Improveconnection setup timeVSAvoidmemory resources

Core Design Contradiction:

Loss of timeVSQuantity of substance

Solution Approach 1:

The patent extracts only the essential connection parameters and context information needed for connection resumption, storing them in the network node. This includes security contexts, bearer configurations, and capability information, while excluding redundant data. This selective extraction reduces memory consumption while still enabling fast connection setup.

Inventive Principle:

Principle #2Taking out (Extraction)

3Productivity

If the number of devices sending small amounts of data is increased, then network capacity is improved, but processing resources per device decrease

Engineering Contradiction:

Improvenetwork capacityVSAvoidprocessing resources per device

Core Design Contradiction:

ProductivityVSPower

Solution Approach 1:

The patent applies preliminary action by pre-configuring connection parameters and storing context information in the network node before data transfer. This allows devices to quickly resume connections without requiring extensive processing resources during actual data transfer, enabling the network to handle more devices with small data amounts efficiently.

Inventive Principle:

Principle #10Preliminary action

4Use of energy by moving object

If devices transition frequently between idle and active states, then battery life is improved, but connection setup time increases

Engineering Contradiction:

Improvebattery lifeVSAvoidconnection setup time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent applies preliminary action by storing connection context and parameters in the network node before the device transitions to idle state. When the device needs to become active again, it can quickly resume the connection using the stored information, avoiding the time-consuming process of full connection setup and reducing the time the device needs to spend in high-power active state.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses copying by creating and storing a copy of the connection context and parameters in the network node. This copy includes security contexts, bearer configurations, and capability information, allowing the device to quickly restore its connection state without re-establishing everything from scratch, thus reducing both setup time and energy consumption.

Inventive Principle:

Principle #26Copying

Data Source

PatentUSRE50591E1Network nodes, a user equipment and methods therein for handling a connection between the user equipment and a wireless communications network

Publication Date: 2025.09.16 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

A method performed by a first network node for handling a connection between a wireless device and a wireless communications network. The wireless communications network comprises the first network node.The first network node stores (705) data related to the connection, and further stores an identifier of the wireless device for locating the stored data related to the connection later.The first network node further provides (706) the wireless device with a command to transition from a connected mode into a suspended mode, in which suspended mode the connection is suspended and the wireless device stores the data related to the connection, and further stores the identifier of the wireless device for locating the stored data later in order to resume the connection.