Uplink Transmission Configuration for Wireless Communication Systems
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services due to resource shortages and the need for increased transfer rates, a large number of connections, very low end-to-end latency, and high energy efficiency, particularly in uplink transmission without dynamic scheduling.
Innovation Solution
A method for user equipment to perform uplink transmission in a wireless communication system without dynamic scheduling by receiving configuration information through higher layer signaling, which includes information for repetition transmission, waveform type selection, and Demodulation Reference Signal (DMRS) configuration, allowing for autonomous operation and efficient resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dynamic scheduling (uplink grant) is used for uplink transmission, then resource allocation flexibility and reliability are improved, but transmission latency and signaling overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring uplink transmission parameters (resource allocation, modulation and coding scheme, power control) before actual data transmission is needed. This allows the user equipment to perform uplink transmission immediately without waiting for dynamic scheduling grants, thereby reducing latency while maintaining reliability through pre-planned resource allocation.
2Manufacturing precision
If dynamic scheduling is used for uplink transmission, then resource allocation precision is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent extracts the essential resource allocation information from dynamic scheduling grants and incorporates it into pre-configured parameters. By taking out only the critical allocation details and embedding them in advance configurations, the system achieves precise resource allocation without the continuous overhead of dynamic scheduling signals, thereby reducing system complexity.
3Productivity
If configuration information is delivered via higher layer signaling for autonomous uplink transmission, then transmission speed and energy efficiency are improved, but configuration overhead and setup complexity increase
Solution Approach 1:
The patent merges multiple configuration parameters (resource allocation, modulation and coding scheme, power control settings) into a single comprehensive higher layer signaling message. This consolidation reduces the number of separate configuration steps and simplifies the overall setup process while enabling fast autonomous uplink transmission once configured.
4Reliability
If repetition transmission is configured for uplink data, then transmission reliability is improved, but resource consumption and transmission time increase
Solution Approach 1:
The patent applies partial action by configuring a specific number of repetition transmissions based on channel conditions and data importance, rather than using excessive repetitions for all transmissions. This selective approach achieves sufficient reliability for critical data while minimizing unnecessary energy consumption for less important transmissions.
Data Source
AI summary
Disclosed are a method for performing uplink transmission in a wireless communication system and an apparatus therefor. Specifically, a method for performing uplink transmission in a wireless communication system, which is performed by a user equipment includes: receiving, from a base station, configuration information for performing uplink transmission without an uplink grant; and transmitting uplink data, to the base station, through at least one uplink resource configured based on the configuration information, in which the configuration information may be received through a higher layer signaling, and the configuration information may include information related to repetition transmission of the uplink data.