Operate guide for Vcan1401-Mesh Ad hoc network communication module

Mesh Ad hoc network communication module

1. Brief introduction of ad hoc network communication module

As a mobile self-organizing network, Vcan1401-Mesh supports any network topology. Unlike traditional wireless networks, it is a wireless broadband system with no center, distributed, multi-hop relay, dynamic routing, strong invulnerability and good scalability. It uses its own routing protocol internally to complete the wireless communication between nodes through wireless multi-hop forwarding. An ad hoc distributed broadband wireless network transmission system with an efficient MAC layer transmission protocol and a two-layer routing protocol. All nodes are completely equal, without any infrastructure, and can quickly build a dedicated self-organizing network between mobile nodes, provide instant adaptive communication, have excellent broadband performance, and support the real-time transmission of multimedia information such as video coding and audio coding. The system technology has the advantages of strong anti-interference ability, high spectrum efficiency, long transmission distance, anti-fading ability, and strong diffraction ability. It can realize real-time and high-quality wireless two-way data transmission functions in complex and non-line-of-sight environments.

Vcan1401-Mesh series technical features

*There is no need to set up a central station and complex system configuration. After the site is powered on, it will automatically form a network, and the communication can be started in “seconds”;

* Arbitrary topology, multi-hop relay, relay forwarding;

* The logical attributes of each node can be flexibly configured;

* At present, the same frequency network can support the interconnection of ≥32 nodes;

* The channel is encrypted with AES;

* The system data bandwidth peak value is 90Mbps;

* Strong anti-interference ability, high spectrum efficiency, long transmission distance, anti-interference

Strong falling ability and diffraction ability

2. Technical parameters

• Communication frequency: 1412~1452MHz, adjustable in 5MHz steps;
• Transmission power: 2*30dBm (2*1W), 1dBm step adjustable。
• Bandwidth mode: 5 / 10 / 20 MHz;
• Modulation method: multi-carrier TDD-COFDM;
• Carrier modulation: BPSK/QPSK/16QAM/64QAM (adaptive or fixed);
• Receive sensitivity: -98dBm @ 10MHz;

• Communication distance: 30km (ground-air/air-air line-of-sight), 8km (ground-ground line-of-sight);
• Communication rate: peak 90Mbps (adaptive);
• Transmission delay: Single jump about 2ms；
• Multi-hop capability: up to 8 video jumps;
• Start time: ≤25S;
• Network access time: less than 1 second;
• Routing switching: less than 1 second;
• Data interface: network port x 2, RS232 x 2;
• Power consumption: 2~8W
• Protection level: IP65;

• Working temperature: -40~+70℃;
• Dimensions: length: 72.8mm*width 47.3mm*height 17.9mm
•  Weight: 78g

2. Software operation instructions

Support 5M, 10M, and 20M bandwidth, real-time graphical interface display, real-time map indication, etc.

The software disables DHCP by default, and the default IP address is 192.168.17.1 If you forget the address, please connect the 9th pin of the 26PIN cable to the ground to reset the parameters.

Enter the IP address of the module in the browser, and the default username and password are both admin. It takes about 20s for the module to connect to the network from power-on. The recommended browser is Chrome.

After entering, it defaults to simple mode, click expert mode to unlock more settings, suitable for professional debugging.

3. Status section:

Overview:

Topology map: (automatic refresh is turned off by default to save bandwidth, you can check automatic refresh)

Check only the display path, you can know the direct jump point relationship of each module

Check the details to judge the data connection status of each module. These are displayed dynamically in real time

Click Details: You can know the specific situation of each module directly:

Terminal state:

Ad hoc network: You can remark the name, of course, it can also be operated in the terminal state.

Spectrum scanning: Check the interference of each frequency band. Of course, the frequency bands of different modules are purchased, and the scanning frequency bands are different.

Map: (Of course, to know the location information of each terminal, GNSS modules such as GPS or Beidou need to be installed)

Support tile maps, image maps, network maps, etc.

Configuration section:

Mode: 1. MESH node or bridge configuration

2. Wireless configuration:

2.1 Transmission power configuration, the power of different products purchased is different.

Channel bandwidth: 5M 10M 20M 40M

Channel: Different channels are used to purchase different products

The coverage distance (meters) needs to be filled in according to the actual situation. If it is set to 3000 meters, it is impossible to actually run to 5000 meters.

Number of Antennas 2

Fixed MCS rate: Can be set to off for automatic selection. If you want stable transmission, it is recommended to set the manual, range (MCS0 to MCS15)

Bandwidth, Modulation, Rate

Limit MCS rate: It is recommended to enable it. After enabling it, if the fixed rate is MCS4, the software will automatically select the best modulation method from MCS0 to MCS4 during the test.

		5M	10M	20M	40M
MCS0	BPSK 1/2	1.7M	3.3m	6.5M	13.5M
MCS1	QPSK  1/2	3.2m	6.5M	13m	27m
MCS2	QPSK  3/4	4.8m	9.8m	19.5M	40.5M
MCS3	16QAM 1/2	6.5M	13m	26M	54M
MCS4	16QAM 3/4	9.7M	19.5M	39M	81M
MCS5	64QAM 2/3	13m	26M	52m	108M
MCS6	64QAM 3/4	14.5M	29M	58.5M	121M
MCS7	64QAM 5/6	16M	32.5M	65m	135M
MCS8	BPSK 1/2	3.2m	6.5M	13m	27m
MCS9	QPSK  1/2	6.5M	13m	26M	54M
MCS10	QPSK  3/4	9.7M	19.5M	39M	81M
MCS11	16QAM 1/2	13m	26M	52m	108M
MCS12	16QAM 3/4	19.5M	39M	78M	162M
MCS13	64QAM 2/3	26M	52m	104M	216M
MCS14	64QAM 3/4	29M	58.5M	117M	243M
MCS15	64QAM 5/6	32.5M	65m	130M	270M

From MCS0 to MCS7, two wireless ports send the same data in order to improve stability during the movement.

From MCS8 to MCS15, the two wireless ports send different data, which can make the rate X2

If it is in a mobile state, it is recommended to use BPSK or QPSK to transmit data. 16QAM and 64QAM are suitable for use with fixed transmission.

If MCS8 to MCS15 is used, it is recommended that the antennas of the two ports be 90 degrees to each other, for example, one is vertical and the other is horizontal.

If drones are used, MCS0 to MCS2 is recommended.

The greater the bandwidth, the lower the sensitivity. The same goes for modulation.

above rate unitbps

3. Network:

4. User management:

5. System

6. Tools Configure serial port, GPS/Beidou/GNSS, 4G/5G access and other parameters

6.1 Multi-device management, in the upper right corner, you can log in and manage users remotely, and it is also a real-time dynamic interface display or map display.

6.2 Serial port software settings:

Select Expert Mode, Tools, and UART Interface.

choose new

Attention, if you use the serial port to transmit serial data, you have to choose ttyS0 (COM1 of hardware) and ttyUSB0 (COM2 of hardware), ttyATH0 is invalid, mode: network

Baud rate 115200, stop bit 1, parity none.

Name 1, protocol UDP, IP address, 192.168.55.100 (the IP address here is the IP address of the other device, for example, input the IP of the computer for the computer, and input the IP of the device for the device).

Port 20005, 20003. Choose a port number

The computer’s IP is set to a fixed 192.168.17.100

Short the TX RX pins of COM1 and COM2 of the device.

Use the TCP UDP test tool to fill in the IP and port of the device.

Send to loop back data.