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Subject:
"Day in the Life" of a Wireless Multimedia Bit
Category: Computers > Wireless and Mobile Asked by: isoquantic-ga List Price: $50.00 |
Posted:
27 Apr 2004 14:13 PDT
Expires: 28 Apr 2004 18:04 PDT Question ID: 337206 |
I am looking for something that resembles the "day in the life" of a wireless multimedia bit, such as a MPEG video stream, as it travels from source to destination, including interactions with all intermediary protocol layers on the network and on the source and desitination clients, media codecs, applications etc. Ideally this would be something like a table. One column shows each stop along the way of the bit. The second column shows what protocol layer is active at that stop, what specifically is happening within that protocol (must be very technical discussion). Each row in the table provides the specific details for each bit stop. I need an answer in days not weeks and will double the payment for an accepted answer received within three days or sooner. |
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There is no answer at this time. |
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Subject:
Re: "Day in the Life" of a Wireless Multimedia Bit
From: andrewxmp-ga on 27 Apr 2004 21:31 PDT |
"a day in the life" sounds like a fun title, but chances are, the existance of a single bit will only be for a few hundred milliseconds, even if it's going across the country... |
Subject:
Re: "Day in the Life" of a Wireless Multimedia Bit
From: pinkfreud-ga on 27 Apr 2004 21:37 PDT |
Andrew's right. But, from the standpoint of the bit, it might *seem* like a day. |
Subject:
Re: "Day in the Life" of a Wireless Multimedia Bit
From: isoquantic-ga on 27 Apr 2004 23:35 PDT |
I hope we are not taking this too literally. A "day in the life" is simply a metaphor for a description of all the processing done for say, video streaming, from a source to a destination. So, we start with some multimedia content, then it gets formatted for sending wirelessly (eventually) to another destination. The converted signal traverses a MAC stack. What happens in the MAC technically? Next there is some travel along the protocol stack above the MAC, eventually to TCP/IP or TCP/UDP layers. What is going on there at each of these points? Then we come to session management and presentation layers in the stack. Again, what specifically is happening at these points? A nice ladder diagram of all the protocol related actions being taken at each node between source and destination would be nice. Is this clearer, now? |
Subject:
Re: "Day in the Life" of a Wireless Multimedia Bit
From: poe-ga on 28 Apr 2004 03:44 PDT |
Hi isoquantic-ga, This is probably too general for the details you're looking for, but the 'Warriors of the Net' animated documentary certainly should be of interest to you. It can be downloaded for free in a number of different languages. Warriors of the Net http://www.warriorsofthe.net/ Warriors of the Net - Movie Download http://www.warriorsofthe.net/movie.html poe-ga Google Answers Researcher |
Subject:
Re: "Day in the Life" of a Wireless Multimedia Bit
From: isoquantic-ga on 28 Apr 2004 08:36 PDT |
These are all too general in their nature for my needs. For example, the answers I am seeking need to go beyond statements like "video is first compressed into a single "media file" for delivery" and dive into the details of the compression algorithm being used to create this media file. We must then describe what happens next. The file must be moved out of a computer to a network. The file must move through network, data link, and physical protocol layers of the computer's network interface card. There is a MAC in the NIC. What is happening there? What happens above the MAC? Once the media file leaves the computer it is transported wirelessly. Wireless is the original assumption of my question. What is happening here? Describe the protocols being used. When the media file reaches its destination, it then goes through the reverse of the transmitting process. Describe this in painful detail. Thanks for hammering away at this guys! Keep going! |
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