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Avoid packet loss in wireless USB

Posted: 19 Nov 2008     Print Version  Bookmark and Share

Keywords:networking medium  packets  wireless USB  wired USB 

USB is a very reliable networking medium where collisions cannot happen. This means that almost no packets are lost or corrupted. Because of this, interoperability testing has never detected corner cases when packets are lost.

The scenario is different, however, for the emerging wireless USB connection. Due to the likelihood of collisions in the wireless medium, care must be taken when migrating an application from wired to wireless USB. This article addresses an issue that can occur in both wired and wireless USB. But because the chance of losing packets in a wireless medium is much bigger, the problem is more likely to happen in wireless USB than in wired USB. The issue is "the danger of losing one packet."

Losing even one packet can cause serious problems when a developer overlooks the issue. This article aims to help the wireless USB developer understand the problem and provide some clues for the implementation of a solution. It begins with a detailed description of the problem followed by an analysis of why it becomes a problem in wireless USB when it is not a problem in wired USB. At the end of the article, some clues will be given for the solution of this issue.

View the PDF document for more information.

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