Concept Internet 802 11 802 16 Cellular Connect to any or all of these networks Mobile Device 802 3 Handover occurs between networks as needed Media Independent Handover MIH Function Event Service Upper Layers Layer 3 Command Service Information Service MIH Function Event Service Command Service Lower Layers Layer 1 and 2 Information Service Upper Layers Layer 3 MIH Events Upper Layers Layer 3 Remote MIH Event MIH Function Link Events MIH Events MIH Function Remote MIH Event Link Events Lower Layers Layer 1 and 2 Lower Layers Layer 1 and 2 Local Stack Remote Stack Upper Layers Layer 3 Upper Layers Layer 3 MIH Commands MIH Commands Remote MIH Command MIH Function MIH Function Remote MIH Command Link Commands Link Commands Lower Layers Layer 1 and 2 Lower Layers Layer 1 and 2 Local Stack Remote Stack General Reference Model MIH Users Layer 3 802 21 Scope MIH SAP MIH NMS SAP MIH Function MIH Event Service MIH Command Service MIH Information Service MIH LINK SAP Link Layer TLV Type 4 Length Variable Value Variable Length bits Case 0 Length is Val Case 1 Val is number 0 Val 0 127 1 of additional octets 2nd octet is Length 1 Val 127 x MSB MIH User MIH SAP MIH Function CS SAP C SAP Mgmt Entity M SAP 802 16 MLME SAP Mgmt Entity LLC SAP MIH 3GLINK SAP PPP LAC LLC RR GMM SM NAS AS E UTRA E CORE 802 16 CDMA2000 GERAN UMTS LTE MIH Frame Octet 1 Octet 2 Octet 3 Octet 4 MIH Message ID MIHF Fixed Header Version 4 y z Reserved 10 SID 4 Transaction ID 16 MIHF Payload y ACK req 1 z ACK resp 1 Action ID 9 Variable Load Length 16 MIHF Variable Header MIHF Variable Load OpCode 3
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