Signal Parameters for Measuring Signal Strength and Quality: Difference between revisions

From Silbo Networks
VisualWikitext
(Created page with "Silbo Networks routers are designed to deliver high-performance connectivity across various network technologies, including GSM, WCDMA, LTE, and CDMA. These routers undergo rigorous testing to measure and optimize signal strength and quality, ensuring reliable performance in diverse environments. # '''RSSI (Received Signal Strength Indicator)''': #* Measures the overall strength of the received signal, expressed in decibels (dBm). #* Higher (less negative) values indica...")
 
No edit summary
Line 1: Line 1:
Silbo Networks routers are designed to deliver high-performance connectivity across various network technologies, including GSM, WCDMA, LTE, and CDMA. These routers undergo rigorous testing to measure and optimize signal strength and quality, ensuring reliable performance in diverse environments.
Signal parameters are critical for assessing and optimizing the performance of modern communication networks. These parameters, derived through Quectel's AT commands such as <code>AT+QCSQ</code> and <code>AT+QTEMP</code>, measure signal strength, quality, and related environmental factors across GSM, WCDMA, LTE, CDMA, and EV-DO networks. Silbo Networks routers employ these commands to ensure superior connectivity and reliability under varied operational conditions.


# '''RSSI (Received Signal Strength Indicator)''':
'''AT+QCSQ Command: Signal Strength Measurement'''
#* Measures the overall strength of the received signal, expressed in decibels (dBm).
 
#* Higher (less negative) values indicate a stronger signal.
The <code>AT+QCSQ</code> command is utilized to query and report the signal strength of the current service network. This command is designed to function in multiple network modes, allowing both active querying and unsolicited reporting based on signal strength changes.
# '''RSRP (Reference Signal Received Power)''':
 
#* A precise measurement of the power of the reference signal received from the cell tower.
'''Key Parameters'''
#* Commonly used in advanced cellular technologies like LTE.
 
# '''RSRQ (Reference Signal Received Quality)''':
* <code><sysmode></code>: Indicates the service mode (e.g., GSM, LTE).
#* Evaluates the quality of the received reference signal by considering modulation errors and other factors.
* <code><value1> to <value5></code>: Represent signal strength and quality metrics specific to each service mode.
#* Helps assess signal reliability.
** '''GSM:''' <code>gsm_rssi</code> (Received Signal Strength Indicator).
# '''SINR (Signal-to-Interference plus Noise Ratio)''':
** '''WCDMA:''' Includes <code>wcdma_rssi</code>, <code>wcdma_rscp</code>, <code>wcdma_ecio</code>.
#* Represents the ratio of the desired signal strength to the combined strength of interference and noise.
** '''LTE:''' Includes <code>lte_rssi</code>, <code>lte_rsrp</code>, <code>lte_sinr</code>, <code>lte_rsrq</code>.
#* A key indicator of call quality and network performance.
** '''CDMA and EV-DO:''' Includes respective <code>rssi</code>, <code>ecio</code>, and <code>sinr</code> values.
# '''SNR (Signal-to-Noise Ratio)''':
 
#* Measures the ratio of the desired signal strength to the background noise level.
[[File:AT+QCSQ Command result.png|1020x1020px]]
#* Higher SNR values indicate better signal clarity.
 
'''Examples'''
 
# Querying Signal Strength:
# Supported Service Modes:
 
----'''AT+QTEMP Command: Temperature Monitoring'''
 
The <code>AT+QTEMP</code> command measures the temperature of critical hardware components, ensuring devices operate within safe thermal limits.
 
[[File:AT+QTEMP.png|1020x1020px]]
 
'''Key Parameters'''
 
* <code><pmic_temp></code>: Power Management Integrated Circuit temperature.
* <code><xo_temp></code>: Crystal oscillator temperature.
* <code><pa_temp></code>: Power amplifier temperature.
 
 
'''AT+CSQ Command: Basic Signal Quality Measurement'''
 
The <code>AT+CSQ</code> command is a fundamental tool used to measure signal strength and quality. It provides two key parameters:
 
* '''RSSI (Received Signal Strength Indicator):''' Measures the signal strength in dBm.
* '''BER (Bit Error Rate):''' Indicates the quality of the signal by measuring error rates.
 
'''Response Format'''
 
'''Parameter Details'''
 
* <code><rssi></code>: Integer value representing signal strength. A higher value indicates a stronger signal.
** <code>0</code>: -113 dBm or less (poor signal).
** <code>31</code>: -51 dBm or better (excellent signal).
** <code>99</code>: Not detectable.
* <code><ber></code>: Integer value representing bit error rate.
** <code>0</code>: Best quality.
** <code>7</code>: Worst quality.
 
[[File:AT+CSQ.png|1020x1020px]]
 
----'''References'''
 
* [https://forums.quectel.com/uploads/short-url/6STzQQL40XtUVfxYicbI7OxXelb.pdf Quectel AT Command Manual]

Revision as of 05:30, 10 December 2024

Signal parameters are critical for assessing and optimizing the performance of modern communication networks. These parameters, derived through Quectel's AT commands such as AT+QCSQ and AT+QTEMP, measure signal strength, quality, and related environmental factors across GSM, WCDMA, LTE, CDMA, and EV-DO networks. Silbo Networks routers employ these commands to ensure superior connectivity and reliability under varied operational conditions.

AT+QCSQ Command: Signal Strength Measurement

The AT+QCSQ command is utilized to query and report the signal strength of the current service network. This command is designed to function in multiple network modes, allowing both active querying and unsolicited reporting based on signal strength changes.

Key Parameters

  • <sysmode>: Indicates the service mode (e.g., GSM, LTE).
  • <value1> to <value5>: Represent signal strength and quality metrics specific to each service mode.
    • GSM: gsm_rssi (Received Signal Strength Indicator).
    • WCDMA: Includes wcdma_rssi, wcdma_rscp, wcdma_ecio.
    • LTE: Includes lte_rssi, lte_rsrp, lte_sinr, lte_rsrq.
    • CDMA and EV-DO: Includes respective rssi, ecio, and sinr values.

Examples

  1. Querying Signal Strength:
  2. Supported Service Modes:

AT+QTEMP Command: Temperature Monitoring

The AT+QTEMP command measures the temperature of critical hardware components, ensuring devices operate within safe thermal limits.

Key Parameters

  • <pmic_temp>: Power Management Integrated Circuit temperature.
  • <xo_temp>: Crystal oscillator temperature.
  • <pa_temp>: Power amplifier temperature.


AT+CSQ Command: Basic Signal Quality Measurement

The AT+CSQ command is a fundamental tool used to measure signal strength and quality. It provides two key parameters:

  • RSSI (Received Signal Strength Indicator): Measures the signal strength in dBm.
  • BER (Bit Error Rate): Indicates the quality of the signal by measuring error rates.

Response Format

Parameter Details

  • <rssi>: Integer value representing signal strength. A higher value indicates a stronger signal.
    • 0: -113 dBm or less (poor signal).
    • 31: -51 dBm or better (excellent signal).
    • 99: Not detectable.
  • <ber>: Integer value representing bit error rate.
    • 0: Best quality.
    • 7: Worst quality.

References

Retrieved from "https://wiki.silbonetworks.com/index.php?title=Signal_Parameters_for_Measuring_Signal_Strength_and_Quality&oldid=2309"