Index Modulation Reference Signal Control Information Transmission

Solution Overview

Problem

Current wireless communication systems, particularly in 5G NR, face inefficiencies in transmitting control information due to resource and power consumption issues when using existing multiple-access technologies.

Innovation Solution

The proposed solution involves using an index modulation technique to transmit control information within reference signals (RSs), where the RS resources are configured based on specific information bits, allowing for implicit conveyance of additional information without additional resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If existing multiple-access technologies are used to transmit control information, then communication services can be provided, but resource consumption and power consumption increase

Engineering Contradiction:

Improvecontrol information transmission efficiencyVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent combines control information transmission with reference signal transmission by embedding control information bits into the reference signal resources. Instead of using separate dedicated resources for control information, the system merges both functions into the existing reference signal framework, thereby improving transmission efficiency while reducing additional power consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The reference signal resources are designed to serve multiple purposes: both as reference signals for channel estimation and as carriers for control information transmission. This multi-functionality allows the system to convey control information without allocating additional dedicated resources, thus improving productivity while managing power consumption effectively.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If existing multiple-access technologies are used to transmit control information, then communication services can be provided, but resource utilization increases

Engineering Contradiction:

Improvecontrol information transmission efficiencyVSAvoidresource consumption

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The patent merges control information transmission with reference signal transmission by embedding control information bits into the reference signal resources. Instead of using separate dedicated resources for control information, the system merges both functions into the existing reference signal framework, thereby improving transmission efficiency while reducing additional power consumption.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The reference signal resources are designed to serve multiple purposes: both as reference signals for channel estimation and as carriers for control information transmission. This multi-functionality allows the system to convey control information without allocating additional dedicated resources, thus improving productivity while managing power consumption effectively.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If additional resources are allocated for control information transmission, then transmission reliability improves, but resource consumption increases

Engineering Contradiction:

Improvecontrol information transmission reliabilityVSAvoidresource utilization

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges control information transmission with reference signal transmission by embedding control information bits into the reference signal resources. Instead of using separate dedicated resources for control information, the system merges both functions into the existing reference signal framework, thereby improving transmission efficiency while reducing additional power consumption.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12267264B2Reference signal based information using index modulation

Publication Date: 2025.04.01 QUALCOMM INC

AI summary

An apparatus, e.g., a UE, for transmission of information modulated onto RSs using index modulation is disclosed. The UE may receive, from a base station, a configuration of one or more RS resources of an RS resource set. The one or more RS resources may be associated with an index modulation technique including a plurality of UL or DL information bits. The UE may transmit, to the base station, or receive, from the base station, the plurality of UL or DL information bits. The plurality of UL or DL information bits may include at least one of one or more first bits or one or more second bits. At least one of the one or more RS resources may be selected based on at least one of the one or more first bits or the one or more second bits.