Mobile Station DTR Mode Data Block Loss Detection

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current data transmission protocols in mobile communication systems face inefficiencies in dynamic timeslot reduction (DTR) due to ambiguity in determining whether to maintain or exit DTR mode, leading to unnecessary battery consumption and potential delays in data transmission.

Innovation Solution

The method involves allowing a mobile station to remain in DTR mode under specific conditions, such as receiving a transmission with valid DTR information or a poll, and exiting DTR mode when new data with a higher sequence number is sent, thereby reducing battery consumption and ensuring efficient data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile station continuously monitors all downlink timeslots to detect potential data block loss, then the reliability of data transmission is improved, but the battery power consumption increases

Engineering Contradiction:
Improvedetection accuracy of data block lossVSAvoidbattery power consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies partial monitoring by allowing the mobile station to exit DTR mode and monitor only a subset of downlink timeslots when potential data block loss is detected, rather than continuously monitoring all timeslots. This partial action reduces power consumption while maintaining sufficient detection capability through targeted monitoring of specific timeslots where data blocks are expected.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system uses self-service through automatic state transitions between DTR and full monitoring modes based on detection of potential data block loss. The mobile station autonomously determines when to exit DTR mode by checking specific conditions (such as receiving poll messages or detecting sequence number gaps) without requiring continuous full monitoring, thereby reducing power consumption while maintaining reliability.

Inventive Principle:
Principle #25Self-service

2Reliability

If the mobile station exits DTR mode to monitor all timeslots when data block loss is detected, then the reliability of data reception is improved, but the transmission delay increases

Engineering Contradiction:
Improvedata block reception accuracyVSAvoiddata transmission delay
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent implements preliminary action by detecting potential data block loss early through specific indicators (such as poll messages or sequence number anomalies) before actual data loss occurs. This allows the system to exit DTR mode proactively and begin monitoring all timeslots in advance, preventing data block loss rather than reacting after it occurs, thereby minimizing delay while maintaining reliability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically transitions between DTR mode and full monitoring mode based on real-time conditions. When potential data block loss is detected through dynamic assessment of incoming messages and sequence numbers, the mobile station exits DTR mode to monitor all timeslots, ensuring reliable reception. This dynamic adaptation allows the system to maintain low power consumption during normal operation while quickly responding to异常情况, balancing reliability and delay.

Inventive Principle:
Principle #15Dynamics

3Use of energy by moving object

If the mobile station remains in DTR mode to reduce battery consumption, then the energy efficiency is improved, but the risk of undetected data block loss increases

Engineering Contradiction:
Improvebattery power consumptionVSAvoiddata block loss detection capability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent introduces intermediary indicators such as poll messages and sequence number checks as mediators between DTR mode and full monitoring mode. These intermediaries allow the system to maintain DTR mode for power savings while using the intermediaries to detect potential data block loss conditions. When these intermediaries indicate problems, the system transitions to full monitoring, thus reducing power consumption during normal operation while maintaining detection capability through the intermediary mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If the mobile station monitors more timeslots to ensure complete data reception, then the reliability of data integrity is improved, but the device complexity increases

Engineering Contradiction:
Improvedata integrity assuranceVSAvoidmonitoring control complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the monitoring task into two distinct modes: DTR mode for normal operation with reduced monitoring, and full monitoring mode for ensuring complete data reception. This segmentation allows the system to manage complexity by handling different monitoring requirements separately rather than continuously executing complex full-monitoring logic, thereby maintaining data integrity while reducing overall device complexity through mode-based simplification.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP2609781B1Method and apparatus for continuing monitoring reduced timeslots when potential data block loss
Publication Date: 2015.07.01 BLACKBERRY LTD
  • EP2609781B1 patent drawingFigure 1
  • EP2609781B1 patent drawingFigure 2
  • EP2609781B1 patent drawingFigure 3

AI summary

A method for operating a mobile station in communication with an associated network is presented. The method includes receiving an assignment of a number of timeslots from the network, monitoring a first set of timeslots in accordance with the assignment, and reducing a number of timeslots monitored to less than the first set of timeslots and monitoring less than the first set of timeslots. The method includes, while monitoring less than the first set of timeslots, receiving a data block within a radio block, and, when the mobile station does not successfully decode the data block and when the mobile station does not successfully decode from the radio block an indication to continue to monitor less than the first set of timeslots, continuing to monitor less than the first set of timeslots.