mobile tv testbed software

Use Case Analysis

Simple use cases for configuring the test bed.

Stop the PSI/SI Process

• User clicks on "Stop" button
• The webui posts a kill message to terminate the main PSI/SI handler
• The system stops the TS NULL Shaper

Start the PSI/SI Process

• User clicks on "Start" button
• The webui posts a start message to the main PSI/SI handler
• The system parses the configuration files.
• The system creates the necessary PSI/SI and ESG files
• The system starts the TS NULL Shaper

Selecting Video to Broadcast

• User clicks on the "Video Files" tab.
• The system lists all available video on the server.
• Entries with existing check mark indicates it is currently in use.
• User selects video files that are not marked.
• User selects "Save" to submit the changes to the server.
• The system updates the videoslist.cfg file to reflect the changes.

Upload Video

• User clicks on the "Upload" tab.
• Select video to be uploaded from local computer.
• Enter assigned PID - Provider ID for the video. Example: 12343
• Enter length description for the video. Example: 2hrs 32 minutes
• Click Upload
• Browser post video file and data to the test bed server.
• User waits for the browser to refresh.
• The system confirms the video file was uploaded.

PSI/SI Configuration Parameters

• User clicks on "PSI/SI" tab
• User changes the parameters
• User clicks "Save"
• The system saves the changes to the psisi.cfg configuration file.

Adjusting Timeslicing Parameters

• User clicks on "Time Slicing" tab
• User selects the parameters
• User clicks "Save"
• The system saves the changes to the timeslicing.cfg configuration file.

Changing DVB-H Parameters

• User clicks on "DVB-H Parameters" tab
• User sets the Carrier Frequency value, for example 538Mhz (possible values are between 470 and 750)
• Update dvbhparams.cfg with "Carrier_Frequency=538"
• Backend script will add "-mf 538" to DtPlay
• User sets the Convolutional Rate value, for example 1/2 (possible values are 1/2, 2/3, 3/4, 4/5, 5/6, 6/7 or 7/8)
• Update dvbhparams.cfg with "Convolutional_Rate=1/2"
• Backend script will add "-mc 1/2" to DtPlay
• User sets the Guadr interval value, for example 1/4 (possible values are 1/4, 1/8, 1/16 or 1/32)
• Update dvbhparams.cfg with "Gaurd_Interval=1/4"
• Backend script will add "-mG 1/4" to DtPlay
• User selects the bandwidth, for example 8 (possible values are 5 6 7 or 8)
• Update dvbhparams.cfg with "Bandwidth=8"
• Backend script will add "-mB 8" to DtPlay
• User selects the constellation, for example QPSK (possible values are QPSK QAM16 or QAM64)
• Update dvbhparams.cfg with "Constellation=QPSK"
• Backend script will add "-mC QPSK" to DtPlay
• User selects the transmission mode, for example 8k (possible values are 2k 4k or 8k)
• Update dvbhparams.cfg with "Transmission_Mode=8k"
• Backend script will add "-mT 8k" to DtPlay
• User clicks "Save"
• The system saves the changes to the dvbhparams.cfg configuration file.
• Backend script use the latest configurationfrom dvbhparams.cfg