Cellular Uplink Parameter Selection for NTN Resource Efficiency
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Solution Overview
Problem
Current methods for enhancing uplink capacity in non-terrestrial networks (NTNs) lead to wasted uplink resources and restricted radio payload sizes, especially in poor pathloss conditions.
Innovation Solution
A method where a radio device autonomously selects a set of uplink resource parameters from a plurality of values transmitted by the base station, based on packet size and pathloss conditions, allowing for efficient transmission even in poor radio environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current methods are used to enhance uplink capacity in NTNs, then uplink capacity is improved, but uplink resources are wasted and radio payload sizes are restricted
Solution Approach 1:
The patent applies parameter changes by allowing the radio device to select from multiple sets of uplink resource parameters (transport block size, number of resource units, number of repetitions) based on actual channel conditions and packet size requirements. This dynamic parameter selection optimizes the match between allocated resources and actual transmission needs, improving uplink capacity while reducing resource waste in NTN environments
2Productivity
If current methods are used to enhance uplink capacity in NTNs, then uplink capacity is improved, but radio payload sizes are restricted
Solution Approach 1:
The patent enables flexible radio payload size by allowing the radio device to select transport block size parameters from multiple available sets. Depending on the packet size requirement and channel conditions, the device can choose appropriate transport block sizes, thereby removing payload size restrictions while maintaining improved uplink capacity
3Ease of operation
If network-specified parameter values are used, then system control is maintained, but optimal parameter selection for specific transmission conditions is lost
Solution Approach 1:
The patent implements a dynamic parameter selection mechanism where the radio device autonomously selects from multiple pre-configured sets of uplink resource parameters based on real-time channel conditions (pathloss) and packet size requirements. This maintains network control over the available parameter sets while enabling device-level adaptation to specific transmission conditions, resolving the contradiction between centralized control and localized optimization
Data Source
AI summary
A method of operating a cellular radio system that comprises a base station and a radio device is disclosed. The method comprises, for a predetermined uplink transmission length and for a predetermined set of uplink resource parameters, the base station transmitting, for receipt by the radio device, a plurality of different sets of values for the uplink resource parameters. The radio device receives the plurality of sets of values and the radio device selects a set of values from the plurality of sets of values. The radio device then transmits a radio packet in accordance with the selected values of the uplink resource parameters.