BLE Reception Terminal Redundancy Adjustment for Voice Stability
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Solution Overview
Problem
Existing voice transmission methods using Bluetooth Low Energy (BLE) face challenges in achieving stable voice transmission due to varying packet loss concealment quality across different device combinations, leading to auditory noise and discomfort, especially when initial control of coded data transmission is inadequate.
Innovation Solution
A reception terminal that receives packets with main data and redundant data generated based on a retransmission timeout period, allowing for repeated retransmission and interpolation of main data, and decodes reproduction data using either main or redundant data, with the redundancy degree adjusted according to the device combination's retransmission timeout period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If packet loss concealment is performed with fixed redundancy degree, then device compatibility is improved, but voice transmission quality deteriorates due to varying retransmission timeout periods across device combinations
Solution Approach 1:
The patent applies dynamics by making the redundancy degree adjustable based on the retransmission timeout period. The reception terminal determines the retransmission timeout period specific to each device combination and dynamically adjusts the redundancy degree accordingly, allowing the system to adapt to varying communication conditions while maintaining stable voice transmission quality across different device combinations.
Solution Approach 2:
The patent changes the parameter of redundancy degree based on the retransmission timeout period. By adjusting this parameter according to the specific timeout period determined for each device combination, the system optimizes packet loss concealment effectiveness without requiring separate control mechanisms for each device, thus resolving the contradiction between adaptability and reliability.
2Reliability
If redundancy degree is increased to improve packet loss concealment, then voice transmission stability is improved, but data transmission efficiency deteriorates due to increased overhead
Solution Approach 1:
The patent optimizes the redundancy degree parameter based on the retransmission timeout period rather than using a fixed high value. This dynamic adjustment ensures that redundancy is increased only when necessary (for device combinations with longer timeout periods), maintaining voice transmission stability while avoiding unnecessary overhead that would reduce data transmission efficiency.
3Ease of operation
If initial control of coded data transmission is performed, then transmission buffer management is improved, but concealment quality deteriorates due to delayed response time
Solution Approach 1:
The patent performs preliminary determination of the retransmission timeout period at the start of communication based on the specific device combination. This preliminary action allows the redundancy degree to be set appropriately from the beginning, ensuring high concealment quality from the start of transmission without requiring delayed adjustments based on buffer status.
Data Source
AI summary
The present technology relates to a reception terminal and a method capable of achieving stable voice transmission regardless of the device.A reception terminal receives a packet transmitted from a transmission terminal, the packet including main data and redundant data generated on the basis of a redundancy degree determined on the basis of a retransmission timeout period that is a time determined by a combination of the transmission and reception terminals and in which retransmission processing of the main data can be repeatedly executed and used for restoration or interpolation of the main data, and decodes reproduction data by decoding the main data or the redundant data. The present technology can be applied to a communication system that performs voice transmission using BLE.