Satellite Communication Latency Compensation via Dynamic Duration Selection
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Solution Overview
Problem
In Non-Terrestrial Networks (NTN) satellite communication, transmission latency between user equipment (UE) and base stations is high due to long distances, affecting communication timing and quality, and existing methods lack accuracy in determining compensation durations for different satellite altitudes.
Innovation Solution
A method and apparatus for determining a compensation duration from a range associated with a service satellite based on received indication information, allowing for precise compensation of transmission latency by selecting a specific duration from a quantified range, which can be indicated using fewer bits for efficient communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite communication is used in NTN scenarios, then communication range is extended and coverage is improved, but transmission latency increases due to long distances
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-configuring compensation durations for different satellite altitudes and service types. The UE is provided with a compensation duration range before actual communication occurs, allowing the system to prepare for latency compensation in advance rather than reacting to latency issues as they arise. This enables the UE to select appropriate compensation values proactively based on the specific service scenario.
2Device complexity
If a fixed compensation duration is used, then device complexity is reduced, but measurement precision of transmission latency compensation deteriorates
Solution Approach 1:
The patent implements dynamics by transitioning from a fixed compensation duration to a dynamic selection mechanism. The UE is provided with a compensation duration range and selects the specific duration based on actual service requirements, satellite altitude, and communication scenarios. This dynamic approach allows the system to adapt compensation values in real-time, improving precision while maintaining relatively simple device complexity through standardized selection criteria.
Solution Approach 2:
The patent applies parameter changes by introducing a range of compensation duration values instead of a single fixed value. The system provides the UE with multiple compensation duration parameters corresponding to different service types and satellite altitudes, allowing the UE to change the compensation parameter dynamically based on the specific communication scenario, thereby improving precision without significantly increasing complexity.
3Measurement precision
If compensation duration range is provided for different satellites, then measurement precision of transmission latency is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by providing different compensation duration ranges tailored to specific service types and satellite altitudes rather than using a universal compensation mechanism. Each service scenario (e.g., eMBB, uRLLC, mMTC) receives customized compensation parameters appropriate to its requirements, improving precision for each local scenario while keeping the overall system manageable through standardized categorization.
Data Source
AI summary
In a transmission latency compensation method, a user equipment (UE) determines, based on received compensation duration indication information, a compensation duration from a compensation duration range associated with a service satellite, where the compensation duration is for compensating transmission latency of transmission between the UE and a base station.