The IST BroadWay project, [1], introduces the ad-hoc networking paradigm in the traditional 5 GHz HiperLAN/2. The ad-hoc networking paradigm is employed at the 60 GHz
frequency band, which allows for a high transmission rate communication. The dual mode of operation primarily aims at offloading the 5 GHz HiperLAN/2 cell in very dense urban
deployments (high traffic needs and number of users), while the peculiarities of the BroadWay system induce modifications on the existing HiperLAN/2 system and make the development of a routing scheme a rather challenging task. The Centralized Ad-hoc Network Architecture (CANA) is described as a means to efficiently support multimedia applications that require very high bit rates in low mobility environments; several ad-hoc specific functionalities are included such as neighborhood discovery, clustering and route selection. BroadWay introduces
modifications to the MAC of HiperLAN/2 regarding new messages and framing considerations at both frequency bands to cater for the new requirements imposed by the dual mode of
operation.
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