DMRS Pattern-Based Transmission Type Determination in 5G

Solution Overview

Problem

In 5G wireless communication systems, existing methods are inefficient in differentiating between slot-based and mini-slot-based transmissions, leading to increased mobile device power consumption and implementation costs due to unnecessary blind decodes and buffering requirements.

Innovation Solution

The system facilitates differentiation between slot-based and mini-slot-based transmissions using demodulation reference signal (DMRS) patterns, allowing mobile devices to determine the transmission type a priori through specific DMRS patterns configured by the Radio Resource Protocol (RRC) or bitmaps, reducing the need for blind decodes and buffering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing methods are used to differentiate between slot-based and mini-slot-based transmissions, then transmission differentiation is achieved, but mobile device power consumption increases and implementation costs increase due to unnecessary blind decodes and buffering requirements

Engineering Contradiction:

Improvetransmission type differentiation accuracyVSAvoidmobile device power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by configuring the mobile device with DMRS pattern information through RRC signaling before the actual transmission occurs. This allows the device to pre-determine the transmission type (slot-based or mini-slot-based) based on the configured patterns, eliminating the need for blind decodes and reducing power consumption during actual data reception.

Inventive Principle:

Principle #10Preliminary action

2Measurement precision

If existing methods are used to differentiate between slot-based and mini-slot-based transmissions, then transmission differentiation is achieved, but implementation costs increase due to unnecessary blind decodes and buffering requirements

Engineering Contradiction:

Improvetransmission type differentiation accuracyVSAvoidimplementation costs

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by configuring the mobile device with DMRS pattern information through RRC signaling before the actual transmission occurs. This allows the device to pre-determine the transmission type (slot-based or mini-slot-based) based on the configured patterns, eliminating the need for blind decodes and reducing power consumption during actual data reception.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If DMRS patterns are used to determine transmission type a priori, then power consumption is reduced and processing efficiency is improved, but protocol complexity increases due to RRC configuration requirements

Engineering Contradiction:

Improveprocessing efficiencyVSAvoidprotocol complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by configuring the mobile device with DMRS pattern information through RRC signaling before the actual transmission occurs. This allows the device to pre-determine the transmission type (slot-based or mini-slot-based) based on the configured patterns, eliminating the need for blind decodes and reducing power consumption during actual data reception.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses RRC signaling as an intermediary to convey DMRS pattern configuration information from the network to the mobile device. This intermediary mechanism establishes the transmission type indication in advance, allowing efficient processing during data reception without requiring complex real-time analysis.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10333740B2Facilitating determination of transmission type via demodulation reference signal patterns

Publication Date: 2019.06.25 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A method facilitating determination of transmission type via demodulation reference signal (DMRS) patterns is provided. In one example, the method can include generating information according to a protocol for receipt by a mobile device, wherein the information is indicative of a defined transmission type for the mobile device and wherein the protocol employs demodulation reference signal patterns; and transmitting the information to the mobile device. In some embodiments, the protocol comprises a first protocol in which the information comprises a first message transmitted in a first set of resources to communicate to the mobile device a first downlink control information (DCI) format associated with a first transmission type, and wherein the protocol further comprises a second protocol in which the information comprises a second message transmitted in a second set of resources to communicate to the mobile device a second DCI format associated with a second transmission type.