WinXP USB BULK mode High speed

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We have a scenario as follows using BULK mode:

- High speed USB device that provides MPEG2 TS. Device has 2K FIFO.
- Stream rate is approx. 32 Mbit/s, so we see an IN token in about 7000
out of the 8000 microframes per second.
- Our USB client driver is queuing up 8 requests, then requeueing 1 on
Bulk complete, to make sure there is always a request ready for Host
Controller.
- The driver is requesting 564 bytes( 3 * 188) at a time.

Problem:

- Some microframes come back to back from Host controller without an
IN token
and we lose MPEG2 data from the device, since the device overflows
its FIFO.

IS there anything we can do in our client driver to increase throughput?

Thanks
decoder


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