Shared RLC Entity Multiplexing Radio Bearers
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Solution Overview
Problem
The increasing number of user equipment (UEs) in wireless communication systems requires efficient methods for transmitting and receiving data using limited radio resources, while also addressing latency and the need for effective signal transmission in new radio access technologies.
Innovation Solution
A shared radio link control (RLC) entity is used to manage multiple radio bearers, associating packet data convergence protocol (PDCP) entities with radio bearers and including identifiers in protocol data units to facilitate efficient data transmission and reception across multiple PDCP entities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate RLC entities are used for multiple radio bearers, then reliability of data transmission is improved, but device complexity and resource overhead increase
Solution Approach 1:
The patent merges multiple RLC entities into a single shared RLC entity that serves multiple radio bearers. The shared RLC entity includes multiple RLC data PDUs in a single output PDU, each marked with a radio bearer identifier. This consolidation reduces the number of separate RLC entities from multiple to one, thereby reducing device complexity and resource overhead while maintaining the ability to reliably transmit data across multiple bearers through the unified structure.
Solution Approach 2:
The shared RLC entity is designed to perform multiple functions simultaneously - it handles data transmission for multiple different radio bearers within a single entity structure. By incorporating radio bearer identifiers in the output PDU and being capable of multiplexing multiple RLC data PDUs, the single RLC entity achieves universal functionality that previously required multiple specialized entities, thus reducing complexity while preserving reliability.
2Manufacturing precision
If traditional separate RLC entities are used for each radio bearer, then data transmission accuracy is maintained, but resource efficiency deteriorates
Solution Approach 1:
The patent combines multiple RLC entities into one shared entity that efficiently utilizes radio resources. By multiplexing multiple RLC data PDUs into a single output PDU with proper identifier tagging, the system achieves better resource efficiency through consolidated handling and transmission, while maintaining data transmission accuracy through the preserved individual PDU structures and identifiers.
Solution Approach 2:
The shared RLC entity acts as an intermediary that manages multiple radio bearers through a unified interface. It receives multiple RLC data PDUs from different bearers, processes them through a single entity structure, and outputs them with appropriate identifiers. This intermediary approach improves resource efficiency by eliminating redundant entity overhead while maintaining transmission accuracy through structured data handling.
3Ease of operation
If multiple separate RLC entities are deployed, then handling of multiple radio bearers is simplified, but overall system throughput decreases
Solution Approach 1:
The patent merges multiple RLC entities into a shared entity that improves system throughput by reducing overhead and enabling more efficient resource utilization. The shared entity handles multiple radio bearers through a unified structure that consolidates processing and transmission operations, thereby increasing overall system productivity while maintaining ease of operation through standardized identifier-based management.
Solution Approach 2:
The shared RLC entity enables continuous and efficient handling of multiple radio bearers without the interruptions and overhead associated with multiple separate entities. By maintaining a unified processing stream that continuously manages multiple bearers through standardized procedures, the system achieves higher throughput while keeping operation simple through consistent identifier-based routing and management.
Data Source
AI summary
A radio link control (RLC) entity can be used for multiple radio bearers (RBs). In other words, one RLC entity can be associated with multiple packet data convergence protocol (PDCP) entities, where the multiple PDCP entities are associated with the multiple RBs, respectively. An identifier of a PDCP or RB can be provided with a PDCP PDU in order to inform the RLC entity or a receiving device which RB or which PDCP entity the PDCP PDU is associated with. The RLC entity shared by more than one RB can be configured according to configuration information for RB(s).