26. Link adaptation No No No Radio link quality control HiperLAN/2 MIB 802.11 MIB 802.11 MIB 802.11 MIB Management Ethernet, IP, ATM, UMTS, FireWire (IEEE 1394), PPP Ethernet Ethernet Ethernet Fixed Network Support To be specified by H2GF No No No Handover support DES, 3DES 40-bit RC4 40-bit RC4 40-bit RC4 Encryption HiperLAN2 802.11a 802.11b 802.11