MBMS Resource Retention During Network Connection Release

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Solution Overview

Problem

In mobile communication networks, particularly when receiving multimedia broadcast and multicast services (MBMS), the conventional connection release procedure causes disruptions as it forces users to release all radio resources, including MBMS resources, leading to service interruptions and delays when transitioning from connected to idle mode, affecting user experience.

Innovation Solution

A method and apparatus for handling network-initiated connection release procedures in mobile communications devices, where the controller module keeps MBMS radio resources unreleased and only releases other radio resources, allowing seamless transition to idle mode without re-establishing MBMS services, thus maintaining continuous MBMS service availability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the conventional connection release procedure is used to release all radio resources, then the network can efficiently manage resources and transition to idle mode, but MBMS service continuity is disrupted and service interruptions occur

Engineering Contradiction:

Improvenetwork resource management efficiencyVSAvoidMBMS service continuity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments the radio resources into MBMS-specific resources and other resources. When releasing connections, it selectively releases only non-MBMS resources while preserving MBMS resources, allowing the network to manage efficiency without disrupting MBMS service continuity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies different release policies to different types of radio resources. MBMS resources are treated differently from other resources - they are kept active while other resources are released, enabling localized optimization of resource management without compromising service continuity.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If all radio resources are released during connection release, then the UE can enter idle mode, but re-establishment delays occur when returning to connected mode for MBMS services

Engineering Contradiction:

Improvemode transition capabilityVSAvoidservice re-establishment delay

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent performs preliminary action by maintaining MBMS radio resources in an active state during connection release. This preliminary preservation of resources eliminates the need for re-establishment when the UE returns to connected mode, thereby reducing service re-establishment delay.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuity of useful action by keeping MBMS radio resources active across mode transitions. The resources remain usable from idle mode without requiring re-establishment, maintaining continuous service availability and eliminating interruptions.

Inventive Principle:

Principle #20Continuity of useful action

3Adaptability or versatility

If MBMS radio resources are released during connection release, then the network can optimize resource allocation, but service interruptions and disruptions occur

Engineering Contradiction:

Improvenetwork resource allocation flexibilityVSAvoidservice disruption

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts MBMS radio resources from the general resource release process. By separating MBMS resources from other resources, the system can optimize allocation of non-MBMS resources while extracting and preserving MBMS resources to prevent service disruptions.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS8515475B2Apparatuses and methods for handling network initiated connection release procedures

Publication Date: 2013.08.20 HTC CORP

AI summary

A mobile communications device with a wireless module and a controller module is provided. The wireless module receives a connection release message for leaving a connected mode from a wireless network. The controller module in response to the connection release message, keeps radio resources of a multimedia broadcast and multicast services (MBMS) service unreleased and releases all radio resources other than the MBMS service. Thereafter, the controller module enters an idle mode.