Terminal Device RLC Entity Configuration for Low Latency High Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in improving data transmission reliability while reducing latency, particularly in 'low latency+high reliability' services, due to errors caused by radio signal attenuation and noise interference.
Innovation Solution
Establishing at least three Radio Link Control (RLC) entities on a bearer and performing data transmission through one or more of these entities, with selective duplicate transmission based on air interface quality and unsent data packet quantity to enhance reliability and reduce latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retransmission mechanism is introduced to improve data transmission reliability, then the correctness rate of data transmission is improved, but data transmission latency increases
Solution Approach 1:
The patent establishes multiple RLC entities in advance before data transmission begins. When data needs to be transmitted, the system can immediately select from multiple pre-configured entities without waiting for retransmission setup, thereby reducing latency while maintaining reliability through redundant transmission paths
Solution Approach 2:
The patent creates duplicate copies of data packets through multiple RLC entities. By establishing redundant transmission channels in advance and copying data across these entities, the system ensures that if one transmission fails, another copy is already available, improving reliability without requiring time-consuming retransmission protocols
2Reliability
If multiple RLC entities are established for duplicate transmission, then data transmission reliability is improved, but device complexity increases
Solution Approach 1:
The patent makes RLC entities multi-functional by enabling them to serve both as primary transmission channels and as backup retransmission channels. This universal design allows the same infrastructure to handle both initial data transmission and error recovery, reducing the need for separate dedicated retransmission entities and thereby reducing overall system complexity
Solution Approach 2:
The patent dynamically adjusts parameters such as the number of active RLC entities, transmission priorities, and resource allocation based on channel conditions and traffic requirements. By changing these parameters adaptively rather than maintaining fixed complex configurations, the system achieves high reliability with manageable complexity
Data Source
AI summary
Embodiments of this application provide a communication method and a related device. The method which is implemented by a terminal device includes: receiving a configuration message, where the configuration message indicates the terminal device to establish at least three radio link control (RLC) entities on a first bearer; establishing the at least three RLC entities on the first bearer based on the configuration message; and performing data transmission through at least one RLC entity on the first bearer. According to the application, data transmission reliability is improved and a data transmission latency is reduced.