Dynamic Radio Resource Allocation for Wireless Repeat Transmissions
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Solution Overview
Problem
Current wireless telecommunications systems face challenges in efficiently supporting a wide range of devices with varying data traffic profiles and coverage requirements, particularly in areas with poor coverage, where frequency hopping for repeat transmissions can be inefficient and wasteful due to frequency selective channel conditions.
Innovation Solution
The system dynamically modifies the arrangement of radio resources during ongoing transmissions based on channel conditions, allowing terminal devices to switch away from poor channel frequencies and adjust timing or frequency usage to optimize data transmission, thereby improving spectral efficiency and reducing energy waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frequency hopping for repeat transmissions is used in poor coverage areas, then coverage enhancement is achieved, but spectral efficiency deteriorates due to frequency selective channel conditions
Solution Approach 1:
The patent implements dynamic modification of transmission resource arrangements during ongoing transmissions. The network access node monitors channel conditions and dynamically adjusts the frequency and time resources used for repeat transmissions, transitioning from static frequency hopping to adaptive resource allocation based on real-time channel quality feedback.
Solution Approach 2:
The system changes transmission parameters (frequency, time, power) based on monitored channel conditions. When poor channel conditions are detected on certain frequencies, the system modifies the transmission arrangement by switching to different frequencies or adjusting timing, thereby adapting to frequency selective fading and improving both coverage and spectral efficiency.
2Reliability
If repeat transmissions are performed on fixed frequency arrangement, then transmission reliability is improved, but resource wastage increases due to poor channel conditions
Solution Approach 1:
The network access node monitors channel conditions for repeat transmissions and uses this feedback to dynamically modify transmission resource arrangements. The system continuously assesses channel quality and adjusts frequency, time, and power resources accordingly, ensuring transmissions occur on optimal resources rather than fixed arrangements.
Solution Approach 2:
The transmission resource arrangement transitions from static to dynamic, allowing real-time adaptation to changing channel conditions. The system can switch frequencies, adjust timing, and modify power levels based on current channel state, thereby maintaining reliability while improving resource efficiency.
3Loss of energy
If dynamic modification of transmission resources is implemented, then spectral efficiency is improved, but device complexity increases
Solution Approach 1:
The terminal device autonomously determines modified transmission resource arrangements based on pre-configured parameters and channel conditions. The device can independently adjust its transmission resources without requiring complex network coordination for each modification, thereby reducing overall system complexity while maintaining dynamic adaptability.
Solution Approach 2:
The network access node pre-configures multiple transmission resource arrangements and parameters before transmissions begin. When dynamic modification is needed, the system selects from pre-prepared options rather than computing new arrangements in real-time, reducing computational complexity while maintaining adaptability to channel conditions.
Data Source
AI summary
A method of operating a terminal in a wireless telecommunications system comprising the terminal and a network node, wherein the method comprises: determining there is data to be transmitted from the terminal to the network node using a series of repeat transmissions; establishing an initial arrangement of transmission resources to be used for transmitting respective ones of the repeat transmissions from the terminal to the network node; starting to transmit the series of repeat transmissions to the network node using transmission resources according to the initial arrangement; establishing before the transmission of the series of repeat transmissions to the network node is complete that a modified arrangement of transmission resources should be used for transmitting at least some of the remaining repeat transmissions; and starting to transmit the at least some remaining repeat transmissions to the network node using transmission resources in accordance with the modified arrangement.