Then does the collection sender mean that a single node may play multiple
logical nodes or roles? In other words, What is the difference between a
collection sender and node ID?
Regards
Islam
From: Omprakash Gnawali
Sent: Wednesday, May 05, 2010 3:40 PM
To: Islam Hegazy
Cc: TinyOS help
Subject: Re: [Tinyos-help] ForwardingEngine in CTP
2010/5/3 Islam Hegazy <[email protected]>:
> Hi all,
>
> I am trying to implement CTP in ns2. Now I am rewriting the code of the
> ForwardingEngine 'CtpForwardingEngineP.nc' and 'CtpP.nc' into ns2. However,
> I don't fully understand how the code flows.
> 1) What is the difference between the SendQueue and MessagePool?
MessagePool is the buffer. Queue keeps track of the items in the
buffer that are used.
> 2) Why each client has a SendQueue size of 'number of clients + forward
> counts'? What is the logic behind having a SendQueue greater than the size
> of the network (number of clients 'CLIENT_COUNT')?
clients is the number of collection senders on a node.
> 3) In 'CtpForwardingEngineP.nc', the function 'command error_t
> Send.send[uint8_t client](message_t* msg, uint8_t len)': what does it mean
> send[uint8_t client]? Does it mean to pass the id of the client who is
> sending the packet? I understand that the code is implemented per node, so
> for example for node 10 send[10] is always called. Are my assumptions
> correct or am I missing something?
Client is a collection sender, not a node id.
- om_p
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