Quectel WCDMA Application Note Download Page 14 | Manualshive

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Quectel WCDMA Application Note Download Page 14

UMTS/HSPA Module Series

WCDMA Jamming Detection Application Note

WCDMA_Jamming_Detection_Application_Note Confidential / Released 13 / 13

5

Appendix A Reference

Table 1: Terms and Abbreviations

Abbreviation

Description

BSIC

Base Station Identity Code

RSSI

Received Signal Strength Indication

URC

Unsolicited Result Code

MNL

Maximum Noise Level

MINCH

Minimum Channel Number

Quectel

Confidential

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Summary of Contents for WCDMA

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: ...ORMATION 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 ALL INFORMATION SUPPLIED HEREIN IS SUBJECT TO CHANGE WIT...

Page 3: ... WCDMA Jamming Detection Application Note WCDMA_Jamming_Detection_Application_Note Confidential Released 2 13 About the Document History Revision Date Author Description 1 0 2014 11 04 Jacky ZHANG Initial Quectel Confidential ...

Page 4: ... 6 2 1 2 Report Jamming Status via URC Periodically 6 2 2 Configure Optimized Detection Parameters 6 3 AT Commands Description 7 3 1 AT QJDCFG Jamming Detection Configuration 7 3 2 AT QJDR Jamming Detection Report 8 3 3 URC Description 9 3 3 1 Disturbed Indicator 9 3 3 2 Jammer Removal Indicator 9 4 Example 10 4 1 Report Jamming via URC 10 4 2 Report Jamming via URC Periodically 10 4 3 Enable and ...

Page 5: ... 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 This document gives a detailed explanation on how to use the Jamming Detection function of Quectel standard modules 1 1 Scope of Docume...

Page 6: ...terfere with normal network operation Quectel s Jamming Detection can allow Quectel module to detect jamming signals When jamming is detected Quectel module sends a notification to MCU reporting the presence of active jamming of the GSM mobile communication network Figure 1 Jamming Application Diagram 2 1 Application Overview Quectel Jamming Detection supports to report the appearance and disappea...

Page 7: ... Chapter 4 1 2 1 2 Report Jamming Status via URC Periodically There are two ways to report URC for indicating jamming status One is reporting URC only once as described in section 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 ...

Page 8: ...n feature These options include the Jamming Detection conditions the Jamming notification methods etc Parameters will be automatically saved into NVRAM after being configured successfully AT QJDCFG Jamming Detection Configuration Test Command AT QJDCFG Response QJDCFG urc 0 1 QJDCFG period 0 120 QJDCFG mnl 0 31 QJDCFG minch 0 254 QJDCFG maxrscp 85 60 QJDCFG maxecio 20 70 QJDCFG minsqual 30 10 QJDC...

Page 9: ...set to 0 no periodic reporting Default value 0 Range 0 120 unit s mnl The maximum jamming signal strength threshold For GSM network only Default value 17 Range 0 31 minch The minimum channel number which is jammed For GSM network only Default value 5 Range 0 254 minch The minimum channel number which is jammed For GSM network only Default value 5 Range 0 254 maxrscp The maximum RSCP threshold For ...

Page 10: ...al port Read Command AT QJDR Response If mode was set to 1 which means enable the jamming detection function return QJDR NOJAMMING or QJDR JAMMED OK If mode was set to 0 which means disable the jamming detection function return QJDR 0 OK Write Command AT QJDR mode Response OK ERROR mode Disable or enable the jamming detection function 0 Jamming Detection function is disabled default is 0 1 Jamming...

Page 11: ... please refer to Chapter 2 2 QJDR JAMMED The URC will be reported automatically Jamming has been detected AT QJDR Query the current jamming status QJDR JAMMED In a jamming environment jamming is detected OK If jammer is removed QJDR NO JAMMING The URC is reported automatically No jamming is detected AT QJDR Query the current jamming status QJDR NOJAMMING No jamming is detected OK 4 2 Report Jammin...

Page 12: ...ING The URC is reported automatically No jamming is detected AT QJDCFG period 0 Disable reporting URC periodically OK 4 3 Enable and Disable Jamming Detection AT QJDR Test mode QJDR 0 1 OK AT QJDR Query the current jamming status QJDR NOJAMMING No jamming detected OK AT QJDR 1 Enable Jamming Detection function OK Turn on jammer QJDR JAMMED The jammer has been detected and then jamming is reported ...

Page 13: ... of the period is 0 It represents that reporting jamming status via URC periodically is disabled QJDCFG mnl 17 QJDCFG minch 5 QJDCFG maxrscp 80 QJDCFG maxecio 40 QJDCFG minsqual 5 QJDCFG maxsrxlev 30 QJDCFG pscanfinelev 100 OK AT QJDCFG URC 1 Enable URC output OK AT QJDCFG period 5 Set period is 5 It represents that jamming status is reported via URC through serial port every 5 seconds OK AT QJDCF...

Page 14: ...ication_Note Confidential Released 13 13 5 Appendix A Reference Table 1 Terms and Abbreviations Abbreviation Description BSIC Base Station Identity Code RSSI Received Signal Strength Indication URC Unsolicited Result Code MNL Maximum Noise Level MINCH Minimum Channel Number Quectel Confidential ...

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