Uplink Signal Transfer Control for TDD Jitter Reduction
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Solution Overview
Problem
Jitter occurs during uplink transmission in time division duplex (TDD) due to waiting times for forming transport blocks larger than the frame size in wireless terminals, leading to increased end-to-end jitter in communication systems.
Innovation Solution
A signal transfer system that includes an information acquisition unit to gather network transfer information for each traffic flow and a communication control unit to adjust frame transmission timing and size based on this information, reducing waiting times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transport block size is increased to improve data transmission efficiency, then transmission productivity is improved, but waiting time for frame formation increases causing jitter
Solution Approach 1:
The patent segments the transport block into smaller units called sub-transport blocks, which are then mapped to individual time slots. This segmentation allows the system to maintain efficient data transmission while reducing the waiting time for frame formation, as smaller segments can be processed and transmitted more quickly without requiring large buffer accumulations.
Solution Approach 2:
The patent implements dynamic adaptation of transport block size based on actual transmission conditions and traffic flow characteristics. The system can adjust the block size in real-time to optimize both transmission efficiency and waiting time, preventing fixed large block sizes from causing excessive jitter while maintaining productivity when conditions permit.
2Stability of the object's composition
If frame transmission interval is reduced to minimize jitter, then time uniformity is improved, but transmission capacity is reduced
Solution Approach 1:
The patent introduces a multi-dimensional approach by mapping sub-transport blocks to multiple time slots simultaneously, rather than using a single sequential transmission timeline. This dimensional expansion allows the system to achieve uniform time intervals for jitter reduction while maintaining high transmission capacity through parallel processing and multiplexing of multiple data flows.
Solution Approach 2:
The patent changes the parameter of frame structure by introducing sub-transport blocks and flexible time slot mapping. This allows the system to adjust transmission parameters dynamically, achieving uniform time intervals when needed for jitter reduction while maintaining high transmission capacity when data volume requires it, effectively decoupling the trade-off between time uniformity and productivity.
3Loss of time
If transport block size is matched to frame size to reduce waiting time, then jitter is reduced, but flexibility in data transmission is lost
Solution Approach 1:
The patent segments the rigid matching requirement between transport block size and frame size by introducing sub-transport blocks. This segmentation allows the system to independently optimize for waiting time reduction while maintaining flexibility in data transmission, as the sub-blocks can be dynamically assembled into transport blocks of varying sizes based on actual data availability and transmission needs.
Solution Approach 2:
The patent creates a universal frame structure that can accommodate multiple sub-transport blocks with different sizes and characteristics. This multi-functional frame design provides flexibility in handling diverse data types and transmission requirements while maintaining uniform time intervals, allowing the system to adapt to various scenarios without sacrificing either waiting time reduction or transmission flexibility.
Data Source
AI summary
A signal transfer system that transfers a signal from one communication device to another communication device includes: an information acquisition unit that acquires network transfer information that is information regarding a traffic flow from the one communication device for each traffic flow from the one communication device to the another communication device; and a communication control unit that executes adjustment processing of controlling transmission of a frame in the one communication device so as to reduce a waiting time for the frame on a basis of the network transfer information acquired by the information acquisition unit.