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Optimal payload for a networked midlet?

 
Tonny Tssagovic
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Hello folks,
I was just wondering what is the "optimal payload" for a midlet retreiving some data from a server. I am thinking about sending all the data at once, or letting the user get thorugh 2 steps, and each step download some data..
For example it would be too much overhead if the first request only gets few bytes, and needs a second to get the rest.. What is the tradeoff in here? WSP post and get PDUs how about the bearer headers and payloads (gprs) Do you guys have an idea ?
By the way, what does the user get charged for "in general" ( Ia m talking about a gprs subscriber)? upload+ download payload ?
Any help will be appriciated!
 
Michael Yuan
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The "optimzal" size of data chunk really depends on the underlying network and billing structure. One thing I can think of is: if you read a few bytes at a time, you might experience some very bad latency ...
 
Tonny Tssagovic
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Thanks for the reply Micheal
Well does anyone know more about the specific case of GPRS as a bearer?
Well maybe not few bytes, but let's say, should the user download 1 kB go to screen one with limitted results (let's say 5 results), then download 1-2 K for each result when he wants to see the details, or just get everything at once 1k+5*2k = 11 k?:confused
How about the case of more heavy data where the first time is 5 k and then 15 k for each detailed results?
Yeah and Y does the GPRS connection takes so long time, and it seems bugy, and always fails when one wanna make a demo
They bill / megabyte in here, but I don't really if it is upload /download or both... I might ask them some time.. :
 
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