1. IEEE MEDIA INDEPENDENT HANDOVER DCN: srho Title: Missing Gaps Related with MGW Date Submitted: June 13, 2012 Presented at IEEE c TG Teleconference Authors or Source(s): Hyunho Park (ETRI), H. Anthony Chan (Huawei) Abstract: Addressing missing gaps related with MGW
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3. Reference model for single radio handover
The target network L2 frame encapsulated inside MICF (Media Independent Control Function) is transmitted to tunnel via the source network to the target network MGW (Mobility Gateway), which in turn may or may not be via the source network MGW.
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4. Missing Gap 1 How does the target network MGW know what to do with it?
The header field of IEEE c may indicate to the target network MGW how to handle the content
Source network
Target network ?
MGW
Target POA MN
Case 1.The L2 frame may be transmitted to the Target PoA
Case 2. Control message such as MIH messages can be processed in the target network MGW
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5. Missing Gap 2 How does the source network MGW know what to do with it?
The header field of IEEE c may indicate to the source network MGW how to handle the content
Source network
Target network ?
Target POA MN
MGW
MGW
Case 1.The L2 frame may be transmitted to the target network MGW
Case 2. Control message such as MIH messages can be processed in the target network MGW
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6. Solution
MTI (Message Type Indicator) field is needed to distinguish between L2 message and Control message
If MTI=0, the message is control message for SRHO
If MTI=1, the message is encapsulated target L2 message
Interworking protocol types is needed to distinguish delivery of delivered interworking protocol
If interworking protocol type=0, IEEE c single radio handover content
If interworking protocol type=1, ANQP of IEEE u
If interworking protocol type=2, WiMAX interworking (E.g. R9 protocol)
If interworking protocol type=3, ANDSF message
Control messages to control MGW are needed
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