Terminal Sidelink Data Mapping for Reliable Control Reception

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Solution Overview

Problem

There is a need to enhance the reliability of control information mapping in sidelink communication for V2X applications, particularly in the allocation of second control information to data channels in the sidelink.

Innovation Solution

A terminal determines the mapping of second control information to a data channel based on the mapping of a reference signal and a control channel, enhancing the reliability of control information reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If control information is transmitted in a data channel of sidelink, then the data channel can carry both data and control information, but the reliability of control information reception deteriorates due to mapping conflicts with reference signals and other control channels

Engineering Contradiction:

Improvedata channel functionalityVSAvoidcontrol information reception reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the data channel into multiple regions: a first region for reference signals, a second region for first control information, and a third region for second control information. This segmentation allows each type of information to be mapped to specific resource elements, preventing conflicts and ensuring reliable reception of control information while maintaining the versatility of the data channel.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If second control information is mapped without considering reference signal and control channel positions, then mapping simplicity is maintained, but control information reception reliability deteriorates due to potential overlaps and interference

Engineering Contradiction:

Improvemapping determination complexityVSAvoidcontrol information reception reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies preliminary action by first determining the mapping positions of reference signals and first control information before mapping the second control information. The terminal identifies available resource elements by excluding those occupied by reference signals and first control information, then maps the second control information to the remaining resources. This preliminary arrangement prevents overlaps and ensures reliable reception.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250254705A1Terminal, and communication method

Publication Date: 2025.08.07 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

A terminal (200) is provided with a control circuit (20A) and a transmitting circuit (20B). The control circuit (20A) determines an arrangement, with respect to a side link data channel, of second control information related to first control information transmitted in the side link, on the basis of the arrangement of a reference signal in the data channel and the arrangement of a control channel. The transmitting circuit (20B) transmits the data channel in accordance with the determined arrangement.