Emerging mesh networks build on IEEE 802.11 wireless local area networking technology to deliver Internet access to mobile users or to areas where traditional wired access technologies are unprofitable. Such deployments are highly bandwidth constrained; in dense urban environments many users are competing for the wireless medium and long-haul wireless backbone connections have significant contention. In addition, IEEE 802.11 networks suffer from a high packet overhead - much higher than Ethernet, for example. As networks advance to higher bitrates the proportion of this overhead increases, because packet preambles are transmitted at the lowest bitrate. This paper addresses this challenge through an adaptive, connection-agnostic aggregation mechanism that can reduce this overhead by combining multiple smaller packets into larger ones.
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