A Centralized Ad-Hoc Network Architecture (CANA) Based on Enhanced HiperLAN/2

In ad-hoc networks, where a user can enter, leave or move inside the network with no need for prior configuration, the support of multimedia applications that require very high bit-rates, is a challenging problem. Here, a Centralized Ad-Hoc Network Architecture (CANA) is proposed, capable of efficiently supporting those applications in low mobility environments, while at the same time a standard wireless LAN environment is maintained for fast moving users. CANA is based on an enhanced HiperLAN /2 protocol architecture [1] [2], (even though this is not mandatory) that supports a dual mode of operation at 5 GHz and 60 GHz. In this system architecture, several ad-hoc specific functionalities are included, such as neighborhood discovery, clustering and routing. Among them, switching between different modes of operation has a large impact on the achievable performance of CANA