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mesh network

nagendra singamsetti
Prodigy 80 points
Other Parts Discussed in Thread: CC2538, CC2531, CC2530

Hai all,

I have 10 cc2538 modules.i created zigbee mesh network. Here i have small confusion mesh have the self routing property and hop to hop Acks.

But my network shows  different behavior. 

1.CC2531(coordinator),remain boards are routers and few end devices.End node send temperature data to nearest router(0x1254) {single hope,source and dest}

and i got Ack from MAC layer.

2.Destination end point is (0x1425),but in between routers nearly 7 all are board cast to all.what is this means .

3.Is this the real mesh network.because mesh should have single route.but here all routers are acts as a repeaters.So i cant calculate efficiency of the network .

please help me out this issue.

  • 0
    Guru 735695 points

    Don't understand your question well. Can you elaborate your problem?

  • 0 in reply to YiKai Chen
    Prodigy 80 points
    Hi, Here i implement zigbee mesh network using 10 nodes.I got route request and response messages from coordinator and other routers.
    After that i plug out cordinator .First two messages are unicast like(i want to send data temperature data (cc2530dk) from 0x2342 end node to 0x1253 Destination router) in between 7 routers are there. Intially i grouped both node 0x2342 and 0x1253.
    So 0x2342 send 0x 3213 (nearest router to 0x2342) but after that all remain broadcast the temperature data even my end router like 0x1253 also broad cast temp value.
    i am not sure this is the mess network.
    Can any one send sample mesh network log file.Your ans should be helpful for me for further research on zigbee network
    thanks
  • 0 in reply to nagendra singamsetti
    Guru 735695 points
    I still don't know what you are asking. What do you mean "you grouped both node 0x2342 and 0x1253?"
  • 0 in reply to YiKai Chen
    Prodigy 80 points
    i used switch board here to send light on command as a end device.And i used cc2530 router which had the functionality to show light bulb.In between i put routers.but all routers broad cast the on/off command and finally light bulb also having broadcast this on/off command to get light on.
    I grouped light switch and router whcih having bulb means -binding action.one switch can abel to control one bulb in between i placed routers.All routers are cc2531 usb dongels.

    my question is why all routers broad cast on/off commands looking acts as packets repeaters.i hope this functionality have not the feature of mess network.
  • 0 in reply to nagendra singamsetti
    Guru 735695 points
    Do you have sniffer log for this issue?
  • 0 in reply to YiKai Chen
    Prodigy 80 points

    Hi Chen,

    I am attaching the file below,

    I have two questions here:

    1.Why the nodes  are broadcast at the time of receiving data,In mesh it shouldnt be happend. Only route request time it should be broadcast.Data transfer from one hope to another hope should be unicast.

    hacked.zip 

    2.Can you send me the One mesh network zigbee pro log file.

    Thanks 

  • 0 in reply to nagendra singamsetti
    Guru 735695 points

    1. Actually, it's coordinator doing broadcasting IAS WD and On/Off command. Do you implement this coordinator?

    2. I attach a sniffer log for your reference.

    correct.zip

  • 0 in reply to YiKai Chen
    Prodigy 80 points

    Thanks Chen,

    i will go through your log file for my reference.I will come back to you If i have issues to know.

    And I am working as a validation engineer.So my development team sent this type of nodes around 40-44 TI implemented nodes to validate the Reliability , RSSI and Tx Rx of this Mesh.

    Yes, I agree with your answer,The Cordinator on/off command is broadcasting. But why respective other router nodes have been broadcast of this same packet at destination side.I am not able to validate above parameters which i mention above.

    Have we need to modify any code level files to implement effective routing with hope-hope  acks from APS layer.

    thanks 

  • 0 in reply to nagendra singamsetti
    Guru 735695 points
    When there is a broadcasting messages received by coordinator or router, they would broadcast it again.
  • 0 in reply to nagendra singamsetti
    Prodigy 80 points
    hai,Chen
    i went through your log file.But your file gives the info of 3 nodes of route whcih i had the same work with 3 nodes 1cordinator - 1router-1 endnode.
    Can you send sample mesh routing file and nodes would be around 5-10 or more than.
    thanks
  • 0 in reply to nagendra singamsetti
    Guru 735695 points
    I don't have such sniffer log for you. I think you can setup the network with SampleLight and SampleSwitch to get the log by yourself.