Summary

• Page properties (1 modified, 0 added, 0 removed)
• Attachments (0 modified, 0 added, 2 removed)
  • image-20240207002003-1.png
  • image-20240207002129-2.png

Details

Page properties

Content

...	...	@@ -44,18 +44,18 @@
44	44	== 2.2 Speed Up Network Attach time ==
45	45
46	46
47		-BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail and show Signal Strenght:99. User can lock the band to specify band for its operator to make this faster.
	47	+BC660K-GL supports multi bands (% style="color:blue" %)**B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B28/B66/B70/B85. **(%%) It will search one by one and try to attach, this will take a lot of time and even cause attach fail. User can lock the band to specify band for its operator to make this faster.
48	48
49	49	(% style="color:#037691" %)**AT+QBAND?       **(%%) ~/~/ Check what is the current used frequency band
50	50
51	51	(% style="color:#037691" %)**AT+QBAND=1,4    **(%%) ~/~/ Set to use 1 frequency band. Band4
52	52
53		-(% style="color:#037691" %)**Europe General**(%%) **AT+QBAND=2,8,20 ** ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
	53	+(% style="color:#037691" %)Europe General(%%) **AT+QBAND=2,8,20 ** ~/~/ Set to use 2 frequency bands. Band 8 and Band 20
54	54
55		-(% style="color:#037691" %)**Verizon**(%%)** ** AT+QBAND=1,13
56		-(% style="color:#037691" %)**AT&T**(%%)           AT+QBAND=3,12,4,2
57		-(% style="color:#037691" %)**Telstra**(%%)        AT+QBAND=1,28
58		-(% style="color:#037691" %)**Softband**(%%)     AT+QBAND=2,3,8
	55	+(% style="color:#037691" %)Verizon(%%) AT+QBAND=1,13
	56	+(% style="color:#037691" %)AT&T(%%) AT+QBAND=3,12,4,2
	57	+(% style="color:#037691" %)Telstra(%%) AT+QBAND=1,28
	58	+(% style="color:#037691" %)Softband(%%) AT+QBAND=2,3,8
59	59
60	60	After connection is successful, user can use (% style="color:#037691" %)**AT+QENG=0 **(%%) to check which band is actually in used.
61	61
...	...	@@ -621,52 +621,3 @@
621	621	(% style="color:blue" %)**See result in TCP Server:**
622	622
623	623	[[image:image-20230807233631-2.png]]
624		-
625		-
626		-= 4. FAQ =
627		-
628		-== 4.1 What is the usage of Multi Sampling and One Uplink? ==
629		-
630		-The NB series has the feature for Multi Sampling and one uplink. See one of them
631		-
632		-[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-NB_BN-IoT_Sensor_Node_User_Manual/#H2.5Multi-SamplingsandOneuplink>>http://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SN50v3-NB_BN-IoT_Sensor_Node_User_Manual/#H2.5Multi-SamplingsandOneuplink]]
633		-
634		-User can use this feature for below purpose:
635		-
636		-1. **Reduce power consumption**. The NB-IoT transmit power is much more higher than the sensor sampling power. To save battery life, we can sampling often and send in one uplink.
637		-1. Give more sampling data points.
638		-1. Increase reliable in transmission. For example. If user set
639		-1*. **AT+TR=1800** ~/~/ The unit is seconds, and the default is to record data once every 1800 seconds (30 minutes, the minimum can be set to 180 seconds)
640		-1*. **AT+NOUD=24** ~/~/  The device uploads 24 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
641		-1*. **AT+TDC=7200**  ~/~/ Uplink every 2 hours.
642		-1*. this will mean each uplink will actually include the 6 uplink data (24 set data which cover 12 hours). So if device doesn;t lost 6 continue data. There will not data lost.
643		-
644		-
645		-= 5. Trouble Shooting: =
646		-
647		-== 5.1 Checklist for debuging Network Connection issue. Signal Strenght:99 issue. ==
648		-
649		-There are many different providers provide NB-IoT service in the world. They might use different band, different APN & different operator configuration. Which makes connection to NB-IoT network is complicate.
650		-
651		-If end device successfully attached NB-IoT Network, User can normally see the signal strengh as below (between 0~~31)
652		-
653		-[[image:image-20240207002003-1.png]]
654		-
655		-
656		-If fail to attach network, it will shows signal 99. as below:
657		-
658		-[[image:image-20240207002129-2.png]]
659		-
660		-
661		-(% class="lead" %)
662		-When see this issue, below are the checklist:
663		-
664		-* Does your SIM card support NB-IoT network? If SIM card doesn't not specify support NB-IoT clearly, normally it doesn't support. You need to confirm with your operator.
665		-* Do you configure the correct APN? [[Check here for APN settings>>http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.1GeneralConfiguretoattachnetwork]].
666		-* Do you lock the frequency band? This is the most case we see. [[Explain and Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.2SpeedUpNetworkAttachtime]].
667		-* Check if the device is attached to Carrier network but reject. (need to check with operator).
668		-* Check if the antenna is connected firmly.
669		-
670		-If you have check all above and still fail. please send console log files (as many as possible) to [[support@dragino.com>>mailto:support@dragino.com]] so we can check.
671		-
672		-

image-20240207002003-1.png

Author

...	...	@@ -1,1 +1,0 @@
1		-XWiki.Edwin

Size

...	...	@@ -1,1 +1,0 @@
1		-22.3 KB

Content

image-20240207002129-2.png

Author

...	...	@@ -1,1 +1,0 @@
1		-XWiki.Edwin

Size

...	...	@@ -1,1 +1,0 @@
1		-17.9 KB

Content