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Quectel WCDMA Application Note

Quectel WCDMA Application Note

Jamming detection umts/hspa module
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WCDMA Jamming Detection
Application Note
UMTS/HSPA Module Series
Rev. WCDMA_Jamming_Detection_Application_Note_V1.0
Date: 2014-11-04
www.quectel.com

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  • Page 1 WCDMA Jamming Detection Application Note UMTS/HSPA Module Series Rev. WCDMA_Jamming_Detection_Application_Note_V1.0 Date: 2014-11-04 www.quectel.com...
  • Page 2 QUECTEL OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS‟ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR RELIANCE UPON THE INFORMATION.

  • Page 3: About The Document

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note About the Document History Revision Date Author Description 2014-11-04 Jacky ZHANG Initial WCDMA_Jamming_Detection_Application_Note Confidential / Released 2 / 13...

  • Page 4: Table Of Contents

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note Contents About the Document ........................... 2 Contents ............................... 3 Introduction ............................4 1.1. Scope of Document ........................4 Jamming Detection Overview ......................5 2.1. Application Overview ........................5 2.1.1. Report Jamming Status via URC ..................6 2.1.2.

  • Page 5: Introduction

    A Cellular Communication Jammer can totally paralyze all kinds of mobile and portable phones working in the GSM/WCDMA bands. Quectel standard modules offer jamming detection functionality which allows the unit to sense attempts to disrupt the GSM/WCDMA communication by interference with the signal. Quectel module‟s sophisticated jamming detection enables enhanced security features and immediate alarm notification if communication interference is detected.

  • Page 6: Jamming Detection Overview

    Quectel‟s Jamming Detection allows the user to identify active jamming of the GSM/WCDMA network. Many alarm, security and life critical operations rely on the use of GSM/WCDMA mobile communications. Criminals and those that intent on preventing time critical messages may use GSM/WCDMA jammers to interfere with normal network operation.

  • Page 7: Report Jamming Status Via Urc

    2.1.1; the other is reporting URCs periodically. Firstly, enable the Jamming Detection function of Quectel module by AT+QJDR=1 and AT+QJDCFG=“URC”,1, and then set the <period> by AT+QJDCFG. If jamming is detected, the module will report a URC “+QJDR: JAMMED” through URC port every <period>...

  • Page 8: At Commands Description

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note AT Commands Description Quectel Jamming Detection can be configured by AT+QJDCFG command and activated by AT+QJDR command. If a Cellular Communication Jammer is active in its range, the module can detect and give indication to you via URC.

  • Page 9: At+Qjdr Jamming Detection Report

    The minimum channel number which is jammed (For GSM network only). Default value: 5. Range: 0-254 "maxrscp" The maximum RSCP threshold (For WCDMA network only). Default value: -80. Range: -85~-60 "maxecio" The maximum ECIO threshold (For WCDMA network only). Default value: 40.

  • Page 10: Urc Description

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note Read Command Response If <mode> was set to “1” which means enable the AT+QJDR? jamming detection function, return: +QJDR: NOJAMMING +QJDR: JAMMED If <mode> was set to “0” which means disable the...

  • Page 11: Example

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note Example 4.1. Report Jamming via URC AT+QJDR=1 //Enable Jamming Detection. AT+QJDCFG="URC",1 //Enable URC output. In normal condition: AT+QJDR? //Query the current jamming status. +QJDR: NOJAMMING //In normal condition, no jamming is detected.

  • Page 12: Enable And Disable Jamming Detection

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note In a jamming environment, please refer to Chapter 2.2. +QJDR: JAMMED //The URC will be reported automatically every 5 seconds. Jamming has been detected. … +QJDR: JAMMED //The URC will be reported automatically every 5 seconds. Jamming has been detected.
  • Page 13 UMTS/HSPA Module Series WCDMA Jamming Detection Application Note +QJDCFG: "period",(0-120) +QJDCFG: "mnl",(0-31) +QJDCFG: "minch",(0-254) +QJDCFG: "maxrscp",(-85~-60) +QJDCFG: "maxecio",(20-70) +QJDCFG: "minsqual",(-30~10) +QJDCFG: "maxsrxlev",(25-60) +QJDCFG: "pscanfinelev",(-500~800) AT+QJDCFG? //Query the current parameter configuration. +QJDCFG: "urc",0 //The default configuration of <urcenable> is 0. It represents that reporting jamming status via URC is disabled.

  • Page 14: Appendix A Reference

    UMTS/HSPA Module Series WCDMA Jamming Detection Application Note Appendix A Reference Table 1: Terms and Abbreviations Abbreviation Description BSIC Base Station Identity Code RSSI Received Signal Strength Indication Unsolicited Result Code Maximum Noise Level MINCH Minimum Channel Number WCDMA_Jamming_Detection_Application_Note Confidential / Released...

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