Sidelink Signal Transmission Resource Mapping in NR V2X
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, particularly in NR V2X subframes, the limited number of REs available for data transmission due to the use of OFDM symbols for AGC and Tx/Rx switching operations hinders efficient resource utilization.
Innovation Solution
A method where data is mapped to symbols in a slot based on subcarrier spacing and frequency range, allowing for comb type RE mapping to increase the number of REs available for data transmission by utilizing a second time duration excluding the first time duration required for AGC and Tx/Rx switching operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If OFDM symbols are used for AGC and Tx/Rx switching operations, then reliable signal control and switching are achieved, but the number of REs available for data transmission is reduced
Solution Approach 1:
The patent segments the time duration within OFDM symbols by identifying a first time duration for AGC/Tx-Rx switching operations and a second time duration for data transmission. This segmentation allows the system to separate control operations from data transmission, enabling both functions to coexist without mutual interference, thereby resolving the contradiction between reliable signal control and sufficient data transmission resources.
2Stability of the object's composition
If more OFDM symbols are allocated for AGC and Tx/Rx switching, then signal stability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent changes the temporal parameters by defining specific time duration thresholds within OFDM symbols. By establishing that the first time duration for AGC and switching operations must be less than the symbol duration, and the second time duration for data transmission must be greater than zero, the system optimizes the balance between signal stability and resource utilization efficiency through parameter optimization.
Data Source
AI summary
One embodiment of the present invention relates to a method whereby a sidelink terminal transmits a signal in a wireless communications system, the signal transmission method comprising the steps of: mapping data to symbols in a slot; and transmitting a signal after mapping the data, wherein whether to map data to a predetermined symbol in the slot and the interval of mapping are determined on the basis of subcarrier spacing and a frequency range.