Preconfigured Uplink Resources for Low Power Wireless Communication

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Solution Overview

Problem

Current wireless telecommunications networks face inefficiencies in handling a wide range of devices with different data traffic profiles, particularly in supporting low complexity devices that require infrequent communication of low bandwidth data, leading to high power consumption and signaling overhead during random access procedures.

Innovation Solution

The implementation of Pre-configured Uplink Resources (PUR) and Early Data Transmission (EDT) allows terminal devices to transmit data during the random access process without establishing a full RRC connection, using Pre-configured Uplink Shared Channel (PUSCH) resources and identifying features like cyclic redundancy checks (CRC) to differentiate between devices, enabling efficient communication and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If random access procedures are used for devices to establish connection, then devices can communicate with the network, but power consumption and signaling overhead increase

Engineering Contradiction:

Improvecommunication capabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent applies preliminary action by pre-configuring uplink resources (PUR) for terminal devices before they need to transmit data. These pre-configured resources include pre-uplink grants that allow devices to immediately transmit data without going through the full random access procedure, thereby reducing power consumption while maintaining communication capability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements partial action by allowing terminal devices to transmit data using only a subset of the full connection establishment procedure. Devices can use pre-configured uplink resources for small data transmissions without establishing a complete RRC connection, performing only the necessary partial procedure for their specific needs.

Inventive Principle:

Principle #16Partial or excessive action

2Reliability

If full RRC connection establishment is performed, then reliable communication is established, but signaling overhead increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts and separates the data transmission function from the full connection establishment procedure. By using pre-configured uplink resources, devices can transmit data without completing the entire RRC connection setup, extracting only the essential data transmission capability while omitting unnecessary signaling steps.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies partial action by implementing Early Data Transmission (EDT) that allows data to be transmitted during the random access procedure itself, before full connection establishment is complete. This performs only the necessary portion of the connection procedure required for data transmission.

Inventive Principle:

Principle #16Partial or excessive action

3Use of energy by moving object

If pre-configured uplink resources are used for data transmission, then power consumption is reduced, but device identification becomes more challenging

Engineering Contradiction:

Improvepower consumptionVSAvoiddevice identification

Core Design Contradiction:

Use of energy by moving objectVSDifficulty of detecting and measuring

Solution Approach 1:

The patent uses CRC masking as a form of 'color change' for device identification. Each terminal device's uplink transmission is marked with a device-specific identifier masked into the CRC field, allowing the network to identify and differentiate between devices based on this unique marker in their pre-configured resource transmissions.

Inventive Principle:

Principle #32Color changes

Solution Approach 2:

The patent introduces CRC masking as an intermediary mechanism for device identification. Instead of requiring explicit device identifiers in the transmission, the system uses the CRC field as an intermediary that carries device-specific information, enabling indirect but efficient device identification.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11979241B2Methods, terminal device and infrastructure equipment using transmission on a preconfigured uplink resource

Publication Date: 2024.05.07 SONY GROUP CORP

AI summary

A terminal device comprising: transmitter circuitry configured to transmit a signal to infrastructure equipment of a wireless telecommunications network using a predetermined set of radio resources configured for use by a plurality of unidentified terminal devices; receiver circuitry configured to receive, from the infrastructure equipment, at least one of: a positive response signal indicating that the signal transmitted to the infrastructure equipment was successfully received by the infrastructure equipment and that the identifying feature of the terminal device was successfully determined by the infrastructure equipment using the signal transmitted to the infrastructure equipment; and a negative response signal indicating that the signal transmitted to the infrastructure equipment was not successfully received by the infrastructure equipment or that the identifying feature of the terminal device was not successfully determined by the infrastructure equipment using the signal transmitted to the infrastructure equipment.