Kazuyuki Sakoda, Yuichi Morioka, Chihiro Fujita, Erica Tanimoto,
Kenzoh Nishikawa, Mitsuhiro Suzuki
Communication Technology Lab., System Technologies Labs., Sony Corporation
5-1-12 Kitashinagawa Shinagawa-ku, Tokyo, 141-0001 Japan
Distributed wireless networking enables opportunistic operation of personal area networks (PANs). In PAN
scenario, it is desirable that each device can establish a wireless connection among devices near by, without a help of
access point (AP) or central coordinator. Distributed Media Access Control (MAC) is one of the key technologies
enabling distributed wireless networking, and WiMedia Alliance worked on the specification of distributed wireless
networking technologies. The specifications developed by WiMedia Alliance were standardized published as ECMA-
368 – High Rate Ultra Wideband PHY and MAC Standard, and ECMA-369 – MAC-PHY Interface for ECMA-368.
This paper introduces the technology overview of ECMA-368 MAC and the MAC LSI design challenges. This MAC
LSI is intended to offer a generic communication platform to meet various application needs, and was certified to be
compliant to the specification by WiMedia. The MAC design includes not only standardized protocol set, but also
some additional enhancement features to achieve better performance or to meet certain application requirements.
Keywords:
WiMedia, UWB, MAC, ECMA-368, ECMA-369, adhoc network, PAN, Superframe,
Beacon Period, DRP, PCA, Block ACK, LSI, ECMA-387.
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