Initial Data Packet Generation for Wireless Audio Delay Reduction

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Solution Overview

Problem

Current wireless communication systems experience significant channel establishment delay, leading to audio delay and inefficient data packet transmission between originator and target mobile stations, due to the queuing of multiple packets while waiting for channel establishment.

Innovation Solution

The technique involves generating an initial data packet with recorded streaming content after a maximum duration is reached, synchronized with the target mobile station's channel establishment, and subsequent packets are sent with varying quality and duration, optimizing transmission timing and reducing packet count.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple data packets are queued in the infrastructure while waiting for channel establishment, then the channel establishment delay is accommodated, but the audio delay increases and transmission efficiency decreases

Engineering Contradiction:
Improvechannel establishment reliabilityVSAvoidaudio delay
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The originator mobile station records streaming content in advance before channel establishment is complete. The initial data packet is generated with this pre-recorded content and transmitted simultaneously with channel establishment, eliminating the need to queue packets during the establishment delay period.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The transmission process is divided into an initial data packet containing pre-recorded streaming content and subsequent data packets. This segmentation allows the initial packet to be sent at channel establishment time while subsequent packets follow the normal transmission schedule, reducing overall audio delay.

Inventive Principle:
Principle #1Segmentation

2Quantity of substance

If multiple data packets are transmitted sequentially, then complete audio content is delivered, but the number of packets increases and network load increases

Engineering Contradiction:
Improveaudio content deliveryVSAvoidnetwork load
Core Design Contradiction:
Quantity of substanceVSLoss of substance

Solution Approach 1:

Multiple data packets are merged into a single initial data packet that contains pre-recorded streaming content for the duration of channel establishment. This consolidation reduces the total number of packets transmitted over the network, thereby reducing network load while still delivering complete audio content through subsequent packets.

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If same packet length is used for all audio packets, then transmission simplicity is maintained, but packet efficiency decreases during channel establishment

Engineering Contradiction:
Improvetransmission simplicityVSAvoidpacket transmission efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The packet transmission system transitions from static same packet length to dynamic packet length. The initial data packet has a different length (containing pre-recorded content) compared to subsequent packets, allowing optimization for channel establishment timing while maintaining simplicity in subsequent normal transmission operations.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS7447173B2Methods for transmitting data packets and supporting apparatus
Publication Date: 2008.11.04 MOTOROLA SOLUTIONS INC
  • US7447173B2 patent drawing
  • US7447173B2 patent drawing
  • US7447173B2 patent drawing

AI summary

In embodiments described herein, responsive to a request to communicate with a target mobile station, recording of streaming content is initiated (506) and recorded (510) to provide recorded streaming content. An initial data packet with the recorded streaming content is generated (518) after a maximum duration of streaming content has been recorded, wherein the maximum duration of streaming content is of substantially a longest duration possible for the recorded streaming content such that the initial data packet is available on a target communication link at substantially a same time that the target mobile station completes establishing a dedicated communication channel appropriate for streaming content. This initial data packet is then accordingly sent (520) to the target mobile station.