Mobile Terminal Network Switching Data Loss Prevention

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Solution Overview

Problem

Data loss occurs when a mobile terminal transitions from one access point to another in a wireless network, particularly in applications like voice over IP and video streaming, where delayed data transmission can result in aberrations in sound or picture quality.

Innovation Solution

A system where the mobile terminal proactively notifies a second access point of an impending transition, retrieves all remaining data from the first access point, and then transitions to the second access point, ensuring continuous data delivery by receiving queued and new data from the target access point.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile terminal transitions from the first access point to the second access point, then the mobile terminal can maintain effective wireless communication, but data may be lost during the transition

Engineering Contradiction:
Improvedata delivery reliabilityVSAvoiddata loss during transition
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The mobile terminal sends a transition request message to the second access point before actually transitioning, allowing the second access point to prepare by storing data in advance. This preliminary action ensures that when the transition occurs, data is already available at the target access point, preventing data loss.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces a transition request message as an intermediary mechanism that coordinates between the mobile terminal, first access point, and second access point. This message serves as a mediator that triggers data storage at the second access point and notifies the first access point to stop transmitting, ensuring seamless data delivery during transition.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the first access point stores data in preparation for transmission, then data can be delivered to the mobile terminal, but the data may not be transmitted before the mobile terminal transitions

Engineering Contradiction:
Improvedata transmission efficiencyVSAvoiddata loss
Core Design Contradiction:
ProductivityVSLoss of information

Solution Approach 1:

The second access point performs preliminary action by storing data in advance upon receiving the transition request message. This ensures that data is ready and waiting at the target access point before the mobile terminal actually transitions, eliminating the risk of data loss due to timing mismatches.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The transition request message acts as a feedback mechanism that informs the network infrastructure of the upcoming transition. This feedback allows the first and second access points to coordinate their actions, with the first stopping transmission and the second preparing to receive and deliver data, ensuring no data is lost.

Inventive Principle:
Principle #23Feedback

3Reliability

If the mobile terminal waits for data from the first access point during transition, then data can be retrieved, but the transition process is delayed

Engineering Contradiction:
Improvedata completenessVSAvoidtransition speed
Core Design Contradiction:
ReliabilityVSSpeed

Solution Approach 1:

By sending the transition request message in advance, the mobile terminal enables the second access point to perform preliminary data storage. This eliminates the need to wait during the actual transition, as data is already prepared at the target access point, thus maintaining both data completeness and transition speed.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent ensures continuity of useful action by maintaining data flow throughout the transition process. The transition request message initiates a continuous data delivery mechanism where the second access point starts receiving and storing data before the transition completes, ensuring uninterrupted data flow and eliminating delays.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUS8260296B2System and method for proactive, early network switching
Publication Date: 2012.09.04 NOKIA TECHNOLOGIES OY
  • US8260296B2 patent drawing
  • US8260296B2 patent drawing
  • US8260296B2 patent drawing

AI summary

A mobile terminal for reduction of data loss during transitioning of the mobile terminal between network devices includes a controller. The controller is capable of transmitting a request to transition and receiving queued data from an original network device prior to transition from the original network device to a target network device. The queued data is content data intended for and undelivered to the mobile terminal that is temporarily stored at the original network device from a time when the request to transition is transmitted to when the transition occurs. The controller is also capable of transitioning from the original network device to the target network device and receiving data stored at the target network device responsive to the request to transition following transition from the original network device to the target network device.