YD/T 4608.1-2023
5G network test data collection unified file interface technical requirements Part 1: Basic file structure requirements (English Version)

Standard No.

YD/T 4608.1-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Post and Telecommunication  CN  /  YD

Latest

YD/T 4608.1-2023

Introduction

Technical Background and Evolution of Standards

With the explosive demand for 5G NR multi-scenario testing, the single file format of traditional road test equipment can no longer meet the needs of new collection methods such as drone testing and robot inspection. This standard proposes the unified file interface (TFI) specification for the first time, and realizes the standardized collection of test data through dual-mode data storage (plaintext event line + binary raw frame).

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Core Architecture Comparison

Dimension	Event Data Row Mode	Chip Raw Frame Mode
Storage Format	ASCII Text	Binary Stream
Data Granularity	Event Trigger Record	Chip-Level Raw Data
Typical Applications	CQT Call Quality Analysis	Chip Protocol Stack Debugging
Extensibility	Extension through EventID	Depend on FrameType Definition

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Key Technology Analysis

File header dual structure design

The file header adopts a fixed length of 237 bytes and is divided into:

• Public information area (64 bytes): Contains global parameters such as FileVer version number, GPS coordinates, TestType, etc.
• Module information area (173 bytes): Records multi-mode test parameters such as TE device model, IMSI, NetworkType, etc.

Precise definition of data types

The standard clearly defines 11 basic data types, for example:

Type	Length	Value range
Time	8 bytes	UTC timestamp (seconds + microseconds)
Uint	4 bytes	0~4294967295
Char[]	Variable	ASCII character array automatically padded with zeros

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Implementation Suggestions

Key Points for Device Manufacturer Adaptation

1. The original frame of the chip needs to retain the original frame header and tail structure of the baseband chip
2. When testing multiple devices in parallel, ensure that each TE generates a .tfi file independently
3. The delimiters of the event data rows must strictly use 0x09(\t) and 0x0A(\n)

Notes on Data Analysis

• When reading the file header, you need to check the LogFormatType field (0/1) to determine the parsing mode
• Compressed files need to be identified by the .tfiz suffix and decompressed using the ZIP standard
• GPSFrame and other auxiliary frames need to be combined with the GUTC field for time zone calibration

YD/T 4608.1-2023 history

• 2023 YD/T 4608.1-2023 5G network test data collection unified file interface technical requirements Part 1: Basic file structure requirements

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