Uplink Data Mapping Using Time-First Code Block Allocation
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Solution Overview
Problem
Current wireless communication systems, such as LTE, face challenges in efficiently transmitting uplink data signals due to limitations in mapping code blocks to resource elements, leading to increased data transmission latency and error probabilities, especially in varying channel conditions.
Innovation Solution
A method and apparatus for transmitting uplink data signals by mapping code blocks to resource elements using a time-first scheme, where the size of the time block is determined based on the uplink demodulation reference signal mapping pattern, allowing for efficient channel estimation and reduced decoding failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If code blocks are mapped to resource elements using conventional methods in LTE systems, then the mapping can be implemented with existing infrastructure, but data transmission latency increases and decoding failure probability increases in varying channel conditions
Solution Approach 1:
The patent applies dynamic time-blocking strategies where the time block size is adaptively determined based on channel conditions and reference signal patterns. The mapping configuration changes dynamically to optimize between latency and reliability depending on the current transmission environment, rather than using a fixed mapping approach.
Solution Approach 2:
The invention changes the mapping parameters by introducing time-blocking as an intermediate granularity level between individual code blocks and resource elements. By adjusting time block size and mapping patterns based on channel conditions, the system optimizes the balance between transmission speed and decoding reliability.
2Reliability
If code blocks are mapped to resource elements without time-blocking, then the mapping process is simpler and faster, but channel estimation accuracy decreases leading to higher decoding failure probability
Solution Approach 1:
The patent segments the resource elements into time blocks, where each time block contains a specific number of resource elements. This segmentation allows channel estimation to be performed more accurately within each time block while maintaining a manageable mapping configuration through standardized time block definitions.
Solution Approach 2:
The system performs preliminary channel estimation within each time block before proceeding to data decoding. This preliminary action within segmented time blocks improves channel estimation accuracy without requiring complex full-frame processing, as the estimation is prepared in advance for each manageable time block.
3Productivity
If the mapping pattern is optimized for low latency, then data transmission speed increases, but the system becomes less adaptable to varying channel conditions
Solution Approach 1:
The mapping configuration is made dynamic by allowing the system to adjust time block sizes and mapping patterns based on channel conditions. In good channel conditions, smaller time blocks can be used for faster transmission, while in poor conditions, larger time blocks provide better channel estimation, thus adapting productivity to channel versatility.
Solution Approach 2:
The time-blocking framework serves multiple functions: it enables both low-latency transmission when configured with smaller blocks and improved reliability when configured with larger blocks. This universal structure adapts to different channel conditions while maintaining a consistent mapping methodology.
Data Source
AI summary
The present application discloses a method for a terminal to transmit an uplink data signal configured with a plurality of code blocks in a wireless communication system. Particularly, the method comprises: a step of mapping, within one slot, a plurality of code blocks to resource elements by using a time-first method, for each time block; and a step of transmitting, to a base station, an uplink demodulation reference signal and an uplink data signal which is configured with a plurality of code blocks, wherein the size of the time block to which the time-first method is applied is determined based on a mapping pattern of the uplink demodulation reference signal.