Dynamic Frame Format Selection for Reduced Feedback Delay
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current communication systems, particularly in LTE and LTE-A networks, face challenges in reducing feedback delay, especially in TDD-based radio systems, which affects TCP throughput due to limitations in efficient switching between uplink and downlink modes and increased latency components.
Innovation Solution
The implementation of a method and apparatus that allows for dynamic selection of frame formats, including downlink only, uplink only, and downlink and uplink formats, to configure transmission and reception, enabling reduced feedback delay by optimizing frame structures with cyclic prefixes, guard times, and orthogonal signal structures, allowing for flexible and efficient switching between UL and DL modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional fixed frame formats are used in TDD-based radio systems, then system stability is maintained, but feedback delay increases and TCP throughput deteriorates
Solution Approach 1:
The patent implements dynamic frame format selection that adapts to current network conditions. The system can switch between different frame formats (downlink only, uplink only, and downlink and uplink formats) based on real-time requirements, transforming the static frame structure into a dynamic one that optimizes feedback delay performance while maintaining system stability through controlled adaptation mechanisms
2Productivity
If frame format switching is enabled to reduce feedback delay, then TCP throughput improves, but system complexity increases
Solution Approach 1:
The patent changes the parameter of frame format configuration from fixed to variable. By introducing multiple frame format options (downlink only, uplink only, and downlink and uplink formats) and selecting appropriate parameters based on network conditions, the system improves TCP throughput while managing complexity through standardized parameter sets rather than arbitrary configurations
3Loss of time
If dynamic frame format selection is implemented, then feedback delay is reduced, but interference management becomes more challenging
Solution Approach 1:
The patent applies different frame format configurations to different local conditions or network scenarios. By selecting specific frame formats (downlink only, uplink only, or combined formats) based on local interference conditions and traffic requirements, the system reduces HARQ latency while maintaining favorable interference properties through localized optimization rather than uniform configuration
Data Source
AI summary
An apparatus for providing reduced feedback delay may include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code may be configured, with the processor, to cause the apparatus to perform at least selecting a frame format to be applied for configuring transmission and reception of data. The frame format may be selected from options including a downlink only format, an uplink only format and a downlink and uplink format. The apparatus may be further configured for communicating the frame format to a transceiver to enable configuration of the transceiver for transmission and reception of data according to the frame format selected. A corresponding method and computer program product are also provided.