RE: [Tinyos-help] Rationale for 29 bytes payload

. -david -Original Message- From: Vinai Sundaram [mailto:[EMAIL PROTECTED] Sent: Friday, April 21, 2006 9:47 PM To: David Moss Cc: tinyos-help@Millennium.Berkeley.EDU Subject: Re: [Tinyos-help] Rationale for 29 bytes payload Hi David, Thank you for your response and the graphs attached. Can

Re: [Tinyos-help] Rationale for 29 bytes payload

On 4/21/06, Vinai Sundaram [EMAIL PROTECTED] wrote: I need to send more than 29 bytes for the application I am working on. However, I do not want to increase the payload size so much that it will reduce the throughput of the network. Is 29 bytes found to give close to optimal throughput? Are

Re: [Tinyos-help] Rationale for 29 bytes payload

Hi Matt, Thanks for your response. Yes, the number of bytes transmitted over radio is simply the length parameter passed to SendMsg.send( ) and not fixed 29 bytes. However, if we always have packets with payload larger than 29 bytes to send, it is necessary to increase the payload size.

Re: [Tinyos-help] Rationale for 29 bytes payload

Hi Vinai, My guess of the default max payload size is to reduce RAM overhead, since each TOS_Msg structure will use more RAM when the max payload size is increased. I can't see that using a larger payload size would adversely affect performance. There would be more overhead fragmenting larger