Mobile Terminal Test Device Theoretical Packet Rate Calculation
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Solution Overview
Problem
Existing mobile communication terminal test devices struggle to accurately display the theoretical packet transmission rate in communication systems where modulation and coding schemes, and resource block numbers are determined by transmission path conditions, such as in LTE, making it difficult for testers to assess packet transmission rates effectively.
Innovation Solution
A mobile communication terminal test device and method that acquire information about the modulation and coding scheme, resource blocks, and transmission mode, calculate the theoretical packet transmission rate using transport block size data, and display this value, enabling accurate representation of the packet transmission rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MCS and NRB are determined according to transmission path conditions in LTE, then communication adapts to channel conditions, but the packet transmission rate becomes variable and difficult to check
Solution Approach 1:
The patent calculates and displays the theoretical packet transmission rate before actual communication occurs. By pre-computing the maximum possible rate based on configured MCS and NRB values, the system provides a reference standard that enables accurate measurement and assessment of actual transmission performance against the theoretical maximum.
2Loss of information
If the test device displays actual packet transmission rate, then real-time performance is visible, but the theoretical maximum rate cannot be shown in LTE systems
Solution Approach 1:
The patent introduces an intermediary calculation module that computes the theoretical packet transmission rate based on input parameters (MCS, NRB, transmission mode). This intermediary component translates communication parameters into a measurable rate value, enabling the display device to show meaningful theoretical maximum rates without requiring complex direct measurements.
3Measurement precision
If GPRS or W-CDMA is used, then packet transmission rate is fixed and easily checkable, but cannot support advanced LTE communication standards
Solution Approach 1:
The patent employs parameter change principles by allowing dynamic input of different MCS and NRB values corresponding to various communication modes (GPRS, W-CDMA, LTE). The calculation module adapts its behavior based on these parameters, providing appropriate theoretical rate calculations for each communication standard while maintaining a unified test device structure that supports multiple systems.
Data Source
AI summary
To provide a mobile communication terminal test device and a mobile communication terminal test method capable of displaying the theoretical value of a packet transmission rate. A mobile communication terminal test device 1 includes a pseudo base station device 10 that is connected between a mobile communication terminal 5, which is a test target, and a virtual connection device 20, a table storage device 30 that stores various tables, a parameter input unit 50 that inputs information about TM, MCS, and NRB, a TBS acquiring unit 41 that acquires TBS on the basis of the input information and various tables stored in the table storage device 30, a packet transmission rate calculating unit 43 that calculates the theoretical value of the packet transmission rate from TBS, and a display unit 93 that displays the theoretical value of the packet transmission rate.