Cellular Node Synchronization Using Shared Clock Accuracy Signaling

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Solution Overview

Problem

The 5G communication protocol does not allow base transceiver stations (BTS) to transmit clock accuracy information to terminal devices, preventing the terminal devices from accurately synchronizing with the cellular network.

Innovation Solution

The BTS transmits clock information and clock accuracy information to terminal devices using a first communication protocol, with the clock accuracy information specified by a second communication protocol, allowing efficient transmission without requiring a separate wireless connection or additional protocol specification.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the BTS transmits clock accuracy information using a protocol different from the first communication protocol, then the terminal device can accurately synchronize with the cellular network, but the protocol complexity increases and additional protocol specifications are required

Engineering Contradiction:
Improvesynchronization accuracyVSAvoidprotocol complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The first communication protocol is designed to serve multiple functions: both clock information transmission and clock accuracy information transmission. This allows the terminal device to achieve accurate synchronization while using a single protocol, thereby avoiding the complexity of implementing and managing multiple protocols simultaneously.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If the BTS transmits clock accuracy information using a separate wireless connection, then the clock accuracy information can be transmitted reliably, but the network complexity and resource consumption increase

Engineering Contradiction:
Improvetransmission reliabilityVSAvoidnetwork complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The transmission of clock accuracy information is merged with the existing first communication protocol used for clock information transmission. By combining these two functions into a single communication channel and protocol, the patent achieves reliable transmission of clock accuracy information while avoiding the need for separate wireless connections and the associated network complexity.

Inventive Principle:
Principle #5Merging (Combining)

3Productivity

If the BTS transmits both clock information and clock accuracy information using the same protocol, then the terminal device can efficiently synchronize without additional protocol overhead, but the first communication protocol must be extended to support clock accuracy information

Engineering Contradiction:
Improvesynchronization efficiencyVSAvoidprotocol specification
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The first communication protocol is extended by adding parameters or fields specifically designed for clock accuracy information transmission. This allows the protocol to efficiently carry both clock information and clock accuracy information within the same message structure, improving synchronization efficiency without requiring completely new protocol specifications.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20260052491A1Method for synchronizing nodes of a cellular network
Publication Date: 2026.02.19 DEUTSCHE TELEKOM AG
  • US20260052491A1 patent drawing

AI summary

A method for synchronizing nodes of a cellular network includes: a base transceiver station (BTS), as a first node of a cellular network, wirelessly transmits clock information to a terminal device connected to the cellular network as a second node of the cellular network according to a first communication protocol; and the BTS transmits clock accuracy information to the terminal device according to the first communication protocol, wherein the clock accuracy information is specified by a second communication protocol different from the first communication protocol.