Effects of forwarder coordination on the data transmission across HiperLAN/2 ad hoc subnets

The HiperLAN/2 (H/2) standard has been designed by the European Telecommunications Standards Institute (ETSI) to provide high bit rate wireless communication in the 5 GHz frequency band. Beside infrastructure based networking, one-hop ad hoc communication for centrally coordinated single subnets is covered by a profile for home environments. The objective of a novel multiple-frequency forwarding technique, introduced in Peetz (2001) for the first time, was to overcome the restrictions of the one-hop configuration and to extend it to multihop ad hoc connectivity. This forwarding concept is very flexible in use and proved to fulfill even the quality of service requirements of MPEG video and constant bit rate traffic, see Peetz. The paper discusses the advantages of forwarder coordination, it proposes technical solutions, and evaluates the performance of double and triple subnet constellations with up to 4-hop inter-subnet routes.