Continuous VOIP Mode Bundling TTI Transmissions

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Solution Overview

Problem

Current wireless communication systems, particularly LTE, face challenges in maintaining continuous communications mode for voice-over-internet-protocol (VOIP) applications due to link budget issues and conflicts between hybrid automatic repeat request (HARQ) turnaround time and VOIP packet arrival time, especially for cell edge users.

Innovation Solution

The implementation of a continuous communications mode that maps transmission time interval (TTI) transmissions to VOIP packet arrival times, processing bundled TTI transmissions without acknowledgments to ensure successful receipt, thereby eliminating the need for HARQ feedback and reducing link budget limitations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If HARQ acknowledgments are used for each TTI transmission, then transmission reliability is improved, but control channel overhead and processing complexity increase

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidcontrol channel overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple TTI transmissions into a single bundled transmission unit. Instead of sending separate HARQ acknowledgments for each individual TTI, the system bundles multiple TTIs together and processes them as a single unit, thereby reducing the number of acknowledgment signals required and lowering control channel overhead while maintaining transmission reliability through bundled processing

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements continuous mode operation where bundled TTI transmissions are processed continuously without interruption. This continuous processing approach eliminates the need for individual HARQ feedback loops for each TTI, allowing the system to maintain uninterrupted data flow and reduce processing complexity while preserving reliability through the continuous bundled transmission mechanism

Inventive Principle:

Principle #20Continuity of useful action

2Measurement precision

If HARQ feedback is implemented for each TTI, then transmission accuracy is improved, but scheduling complexity and turnaround time increase

Engineering Contradiction:

Improvetransmission accuracyVSAvoidscheduling complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple TTI transmissions into bundled units and processes them collectively. This merging approach maintains transmission accuracy by ensuring all bundled transmissions are successfully received, while simultaneously reducing scheduling complexity by eliminating the need for individual HARQ feedback timing and processing for each separate TTI

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system performs preliminary bundling of multiple TTI transmissions before processing. By pre-grouping transmissions into bundles and preparing them for collective processing, the system maintains accuracy requirements while simplifying subsequent scheduling and feedback mechanisms, as the bundled unit is treated as a single scheduling entity

Inventive Principle:

Principle #10Preliminary action

3Productivity

If continuous transmissions are sent without bundling, then data rate is improved, but link budget performance deteriorates for cell edge users

Engineering Contradiction:

Improvedata rateVSAvoidlink budget performance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent merges multiple TTI transmissions into bundled units that are processed together. This bundling provides link budget gains by accumulating signal energy across multiple transmissions, improving reliability for cell edge users, while still maintaining continuous mode operation to preserve overall data rate through uninterrupted bundled transmissions

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If HARQ acknowledgments are required for each transmission, then transmission reliability is improved, but battery consumption increases

Engineering Contradiction:

Improvetransmission reliabilityVSAvoidbattery consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent combines multiple TTI transmissions into bundled units and processes them collectively without requiring individual HARQ acknowledgments for each TTI. This reduction in acknowledgment signaling decreases the number of processing operations and signal transmissions, thereby reducing battery consumption while maintaining transmission reliability through the bundled processing mechanism

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The continuous mode operation with bundled transmissions eliminates interruptive HARQ feedback loops. By maintaining continuous uninterrupted bundled transmissions without requiring frequent acknowledgment processing, the system reduces the energy consumption associated with repeated signaling and processing operations while preserving transmission reliability

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS9337962B2Continuous mode operation for wireless communications systems

Publication Date: 2016.05.10 QUALCOMM INC

AI summary

Certain aspects of the present disclosure propose techniques for a continuous communications mode in a wireless communications system. The technique may involve processing bundles of transmission time interval (TTI) transmissions having transmission times that are mapped to voice-over-internet-protocol (VOIP) arrival times, wherein the bundled TTI transmissions are processed without acknowledgements to indicate the bundled TTI transmissions have been successfully received.