Wireless SDU Segmentation Across RLC MAC PHY for Low-Delay Reliability
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Solution Overview
Problem
Current wireless communication networks fail to leverage frequency diversity gain from multiple RLC, MAC, and PHY entities due to lack of communication and coordination between these entities, especially in cases of data duplication, leading to inefficient transmission and increased delay.
Innovation Solution
Implement methods for segmentation and reassembly of PDCP PDUs, network coding, and coordinated transmission across RLC, MAC, and PHY entities to enhance coordination and efficiency, including acknowledgement mechanisms and retransmission strategies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data duplication is implemented across multiple RLC, MAC, and PHY entities, then reliability is improved, but coordination complexity increases and frequency diversity gain is lost due to lack of communication between entities
Solution Approach 1:
The patent segments the data transmission process by dividing the SDU into multiple segments and distributing them across different RLC, MAC, and PHY entities. Each entity independently handles its assigned segments, eliminating the need for complex inter-entity coordination while maintaining reliability through diversity. The segmentation allows parallel processing without synchronization overhead.
Solution Approach 2:
Each RLC, MAC, and PHY entity operates autonomously to handle its assigned data segments without requiring communication or coordination with other entities. The entities self-manage their transmission, acknowledgment, and retransmission processes independently, thereby achieving reliability through distribution while avoiding coordination complexity.
2Reliability
If segmentation and distributed transmission are implemented, then frequency diversity gain is enhanced, but transmission delay increases due to lack of coordination and acknowledgment mechanisms
Solution Approach 1:
The patent implements acknowledgment mechanisms where receiving entities send feedback acknowledgments for successfully received segments. This feedback enables the transmitting entities to identify which segments need retransmission, reducing unnecessary retransmissions and associated delays. The feedback loop maintains efficiency while supporting distributed segmentation across multiple entities.
Solution Approach 2:
The patent employs retransmission strategies where entities prepare and queue segments for potential retransmission before they are actually needed. This preliminary preparation reduces waiting time and coordination overhead when retransmissions are required, as entities can quickly respond to acknowledgment feedback without needing to coordinate with other entities in real-time.
Data Source
AI summary
This disclosure relates generally to a method, device, and system for efficiently coordinating resources among different entities in a wireless network. A service data unit (SDU) is received. The SDU is divided into a plurality of segments. The plurality of segments are transmitted to a receiving device. An acknowledgement of successful transmission of one or more of the plurality of segments is transmitted.