Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: NB-IoT Arduino Shield from AIS (Thailand) First Impressions
Top Forums Programming NB-IoT Arduino Shield from AIS (Thailand) First Impressions Post 303042754 by Neo on Sunday 5th of January 2020 11:07:20 PM
Old 01-06-2020
Yesterday we spent the day out in the car with the AIS NB-IoT device attached to my MacBook Air; looking at the serial monitor via USB and also recording messages back in the USA on my simple Python UDP server.

The bottom line is that this device is good for locating AIS cell towers :wink: :wink: because it only worked when a tower with AIS NB-Iot support was visible (within line-of-site).

This means that this device seems to only work when it is very close to a cell tower and very close to direct line-of-site.

This also explains why this 900 MHz range device works on my sea-side balcony. There is a cell tower in our line-of-site on that balcony, only a few hundred meters away..

However, on the rear balcony, the AIS-NB-IoT device will not connect to the AIS network, and, as expected, there is no cell tower within line-of-site.

When driving around the countryside in Thailand, this device only "worked" when there was an AIS cell tower which supported NB-IoT in near direct line-of-site.

My best rough guess, driving from our condo next to the sea in Jomtien Beach to Hardware House (picking up electrical supplies) in the country side, Rayong province and back (using two different routes), is that this AIS NB-IoT device connected successful to the AIS network approximately 70% of the time. This is just a rough guess because I was driving the car and my wife was looking at the computer, calling out the RSSI readouts and connection status. She really liked that part, I think!

Note to AIS Network Engineers: AIS NB-IoT device would not connect to AIS NB-IoT network at Hardware House in Rayong (or in that important area).

We experienced mixed results with the NB-IoT shield working as it went in and out of network coverage. Sometimes the device did not require a reboot to reconnect after losing the signal, sometimes it did require a reboot to reconnect.

To write code to properly mitigate this (connection management code), I would need the technical parameters from AIS for the network regarding connection timeouts (and other parameters) on their end; but since I only have the specification for the device (the BC95) and not the AIS NB-IoT network.

I have already reached out and sent an email to AIS for this basic timeout value.

Quote:
Dear AIS AIAP,

What is the timeout value for a connection to the AIS NB-IoT network from a device after a connection has been established and a message not received from the device?

Thanks!
Waiting on a reply ...

Soon, I think I will test LoRaWAN including LoRaWAN gateways and devices. More on this later.
 

6 More Discussions You Might Find Interesting

1. Solaris

java shield

dear experts i want to install java install shield on solaris but first i want to read more information and help about it can anyone gives me some links or guids that helps me (0 Replies)
Discussion started by: murad.jaber
0 Replies

2. Programming

Arduino-cli - Uploading to Unknown Chinese Arduino Boards using the Arduino Command Line Interface

In my further exploration of Arduino, today I decided to install the arduino-cli on my mac today. https://github.com/arduino/arduino-cli I followed the instructions for macOS but when I got to this part: arduino-cli board list I got the dreaded "Unknown" Fully Qualified Board Name... (1 Reply)
Discussion started by: Neo
1 Replies

3. Programming

Arduino UNIX Time - Syncing Computer UNIX Time to Arduino Time with Python

Just finished a quick Python script to send the current unix time over to the Arduino from macOS, so in the absence of GPS or some other way to get the unix timestamp (epoch time) to the Arduino, I can get my macOS and Arduino UNO synced to within a second. Normally, when the Arduino starts... (9 Replies)
Discussion started by: Neo
9 Replies

4. Programming

Arduino Project with NB-IoT (3GPP) and LoRa / LoRaWAN

My favorite projects are always related to the "latest" tech in command and control, networking and network communications. This Elecrow GSM/GPRS/EDGE SIM5360E 3G Shield seems to be the "latest and the greatest" as far as 3G and GPS, as far as I can see so far, but I has it drawbacks for sure.... (6 Replies)
Discussion started by: Neo
6 Replies

5. Programming

Elecrow GSM/GPRS/EDGE SIM5360E 3G Shield for Arduino

Normally I have very good experiences buying from AliExpress, but in this case with Elecrow, I'm disappointed. After confirming with Elecrow on AliExpress that their Elecrow GSM/GPRS/EDGE SIM5360E 3G Shield for Arduino would work with 3G SIM cards in Thailand, I purchased one. My plan was to... (1 Reply)
Discussion started by: Neo
1 Replies

6. Programming

Arduino Project: iPhone to HM-10 BLE to NB-IoT Shield to NB-IoT Network to Internet to Linux Server

This post describes a "work in progress" project I started today. Here is the High Level Overview: Currently, this project sits on my desk as an Arduino UNO (on the bottom), an NB-IoT Shield (sandwiched in the middle), a Sensor Shield (on top) with a HM-10 BLE Module (in the little... (13 Replies)
Discussion started by: Neo
13 Replies

LEARN ABOUT OPENDARWIN

veth

veth(4) 						     Linux Programmer's Manual							   veth(4)

NAME

       veth - Virtual Ethernet Device

DESCRIPTION

       The veth devices are virtual Ethernet devices.  They can act as tunnels between network namespaces to create a bridge to a physical network
       device in another namespace, but can also be used as standalone network devices.

       veth devices are always created in interconnected pairs.  A pair can be created using the command:

	   # ip link add <p1-name> type veth peer name <p2-name>

       In the above, p1-name and p2-name are the names assigned to the two connected end points.

       Packets transmitted on one device in the pair are immediately received on the other device.  When either devices is down the link state	of
       the pair is down.

       veth  device  pairs are useful for combining the network facilities of the kernel together in interesting ways.	A particularly interesting
       use case is to place one end of a veth pair in one network namespace and the other end in another network namespace, thus allowing communi-
       cation between network namespaces.  To do this, one first creates the veth device as above and then moves one side of the pair to the other
       namespace:

	   # ip link set <p2-name> netns <p2-namespace>

       ethtool(8) can be used to find the peer of a veth network interface, using commands something like:

	   # ip link add ve_A type veth peer name ve_B	 # Create veth pair
	   # ethtool -S ve_A	     # Discover interface index of peer
	   NIC statistics:
		peer_ifindex: 16
	   # ip link | grep '^16:'   # Look up interface
	   16: ve_B@ve_A: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc ...

SEE ALSO

       clone(2), network_namespaces(7), ip(8), ip-link(8), ip-netns(8)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2018-02-02								   veth(4)
All times are GMT -4. The time now is 05:21 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy