Round Trip Delay Quantization for Satellite Communications
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Solution Overview
Problem
In satellite communications, the excessively long round trip delay (RTD) causes significant resource overheads when directly broadcast, hindering the convergence of satellite communication with ground communication systems.
Innovation Solution
The method decomposes the round trip delay into height-related and angle-related delays, using separate quantization parameters to indicate these components, reducing resource overheads by broadcasting the quantization parameters instead of the full RTD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the common RTD is directly broadcast to user mobile terminals, then the time compensation accuracy is improved, but the resource overheads increase significantly
Solution Approach 1:
The common RTD is segmented into multiple quantization parameters including a first quantization parameter for height-related delay and a second quantization parameter for angle-related delay. This segmentation allows the broadcast information to convey delay characteristics through compact parameter representations rather than transmitting the full RTD value directly, thereby reducing resource overheads while preserving time compensation accuracy.
2Measurement precision
If the common RTD value (reaching hundreds of milliseconds) is broadcast, then the time compensation is accurate, but the broadcast resource consumption increases
Solution Approach 1:
The patent transforms the RTD parameter from its original time domain representation (hundreds of milliseconds) into quantization parameters that encode height-related and angle-related delay characteristics. This parameter transformation enables the broadcast system to transmit essential delay information with reduced bit requirements, lowering broadcast resource consumption while maintaining the ability to achieve accurate RTD compensation at the mobile terminal.
3Quantity of substance
If quantization parameters are used to indicate delay components, then the resource overheads are reduced, but the system complexity increases
Solution Approach 1:
The delay information is segmented into distinct quantization parameters representing different physical characteristics (height-related delay, angle-related delay). While this segmentation increases processing complexity at the terminal for reconstructing the common RTD, it significantly reduces the size of broadcast information. The structured segmentation also enables efficient processing through dedicated modules for each parameter type, managing the complexity increase in an organized manner.
Data Source
AI summary
This application provides a method for processing a round trip delay, a related apparatus, and a readable storage medium, and pertains to the field of communications technologies. The method includes: receiving a delay quantization parameter of a common round trip delay (RTD), where the delay quantization parameter includes a first quantization parameter, and the first quantization parameter is used to indicate a height-related delay; and obtaining the common RTD based on the delay quantization parameter. The height-related delay is indicated by using the first quantization parameter, so that the common RTD is obtained based on the first quantization parameter.