USENIX 2005 Annual Technical Conference, FREENIX Track Abstract
Pp. 4760 of the Proceedings
Awarded FREENIX Track Best Paper!
USB/IPA Peripheral Bus Extension for Device Sharing over IP Network
Takahiro Hirofuchi, Eiji Kawai, Kazutoshi Fujikawa, and Hideki Sunahara,
Nara Institute of Science and Technology
As personal computing becomes more popular and affordable, the availability of
peripheral devices is also increasing rapidly. However, these peripheral
devices can usually only be connected to a single machine at time. The ability
to share peripheral devices between computers without any modification of
existing computing environments is, consequently, a highly desirable goal, as
it improves the efficiency and usability of such devices.
Existing device sharing technologies in the pervasive computing area are not
sufficient for peripheral devices designed for personal computers, because
these technologies do not provide the degree of network-transparency necessary
for both applications and device drivers.
In this paper, we propose USB/IP as a peripheral bus extension over an
Internet Protocol (IP) network. This novel device sharing approach is based on
the sophisticated peripheral interfaces that are supported in most modern
Using a virtual peripheral bus driver, users can share a diverse range of
devices over networks without any modification in existing operating systems
and applications. Our experiments show that USB/IP has sufficient I/O
performance for many USB devices, including isochronous ones. We also describe
performance optimization criteria that can be used to achieve further
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