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Zigbee #router limits

roapangua
Prodigy 50 points

Hello everybody.

I need some help.

I'm studing the characteristics of Zigbee in order to stablish the suitability of Zigbee to one system.

I have one doubt. How many routers can work in the Zigbee network? Not the theorical limit. Has the coordinator to stablish the number of childs and hops? Do these numbers determine the total amount of routers?

Thanks in advance.

My english is not good enought.Sorry.

 

 

  • 0
    TI__Mastermind 19575 points

    Hi,

    What ZigBee specification or feature set are you looking for? ZigBee 2006 or ZigBee PRO

    Can you please elaborate on what you are styding and investigating?

    LPRF Rocks the World

  • 0 in reply to Morten Braathen
    Prodigy 50 points

    Hi LPRF,

    I've been reading about both specifications.

    My application will have about several hundreds of routers and no end devices.

    Is Zigbee Pro most suitable for this?

    The topology could be from a simple mesh with 5-6 hops to a mesh with branches with up to 12-14 hops.

    I've read Zigbee PRo is better because it uses stochastic addresing to prevent orphan nodes.

    Could i communicate up to 500 nodes with Zigbee Pro?

    Thanks in advance LPRF.

     

  • 0 in reply to roapangua
    TI__Mastermind 19575 points

    Hi Roapanuga,

    ZigBee PRO uses stochastic addressing which is an improvement from ZigBee 2006 and CSkip. I guess I look up this as static versus dynamic address allocation.

    The ZigBee 2007 (PRO & 2007 feature set) specification supersedes the ZigBee 2006. So when it comes to network scalability the PRO addressing has improved this with respect to ZigBee 2006.

    Yes, ZigBee PRO would be one path to go.

     

    What does ZigBee Pro mean for your application?

    http://www.wirelessnetdesignline.com/howto/204204114;jsessionid=4QQQ1QB2JBPRAQSNDLPCKHSCJUNN2JVN?pgno=2

     

    LPRF Rocks the World

  • 0 in reply to Morten Braathen
    Prodigy 50 points

    OK LPRF. Thanks.

    Now I know that Zigbee 2007 is what I need.

    But I have one doubt.

    I've read nodes have a limit in their route tables. So could I have a problem if one router had to route packets to  f.e. 200 routers?

    There is some solution in this case?

    Is it possible to send each packet with a path discovery option to  discovery the path and in this way to reach the destination?

     

    Roapangua

     

  • 0 in reply to roapangua
    Expert 1005 points

    There is a possibility to do a broadcast message to "routers only"; simply use the address 0xEEEE which is assigned by the ZigBee protocol to be a message for all FFD (full functional devices).

    This could maybe be of some help here?!

  • 0 in reply to florian1
    Prodigy 50 points

    I need to send information to each router but not to all of them at the same time.  So If there isn't an other option i should include some information in the messages in order to the application could disscard the messages to another router.

    I will work with data rates up to 1-2 Kbps. Could Broadcast messages affect the performance of the mesh with this data rate? 

     

    Thank u  very much FGreber