IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN: 21-06-xxxx-00-0000
Title: Review on MIH general model
Date Submitted: February, 17th, 2006
Presented at IEEE 802.21 session #13 in Denver
Authors or Source(s):
Guo Junxiang
Abstract: Propose to optimize the MIH model and the
MIH_LINK_SAP
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Current general MIH reference model
Figure 4 General MIH reference model and SAPs
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Why to optimize current model
•
Currently MIH_LINK_SAP has almost the same primitives as the MIH_SAP, which implies
that the MIH layer only simply transfer these primitives from Link Layer to MIH user and the
mapping work between the MIH_LINK_SAP and the media specific SAPs is done by the Link
Layer, e.g., in Annex A-2, the mapping of 3GPP primitives to the 802.21 service primitives
should be done by the 3GPP Layer (RR, LLC etc.), this may not be what was expected, indeed
this mapping work should be done by MIH.
•
In the current model, the mapping relationship is: media specific SAPs- <->MIH_LINK_SAP
<->MIH_SAP. The mapping between MIH_LINK_SAP and MIH_SAP is superfluous.
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Optimized general MIH model (1)
MIH Users (Layer3 or higher mobility protocol(L3MP),Handover
Policy, Transport ,Applications)
MIH_SAP
Media Independent Handover (MIH) Function
802.3_SAP
802.11_SAP
802.16_SAP
3GPP_SAP
802.3
802.11
802.16
3GPP
3GPP2_SAP
3GPP2
Figure 4 General MIH reference model and SAPs
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Network Management system
MIH Information
Service
MIH Command Service
MIH_NMS_SAP
MIH Event Service
Optimized general MIH model (2)
•
In this proposed optimized MIH general model, 802.3_SAP etc. are abstract representations,
they are corresponding to the following specific SAPs:
802.3_SAP： L_SAP
802.11_SAP：L_SAP，MLME_SAP
802.16_SAP：CS_SAP，C_MAP，M_SAP
3GPP_SAP：MIH_3G_LINK_SAP
3GPP2_SAP：MIH_3G2_LINK_SAP
•
The MIH_LINK_SAP primitives are replaced by media dependent primitives, such as
primitives of MIH_3G_LINK_SAP, M_SAP,C_SAP etc.
•
The mapping of media specific primitives to MIH_SAP primitives is done by the MIH Function
(MIH-ES, MIH_CS, MIH_IS).
•
The MIH_LINK_SAP primitives disappear, thus the media dependent SAPs should add these
common primitives (as their corresponding MIH_SAP primitives can not be mapped from
existing media dependent SAPs): Link Event Discover, Link Event Register, Link Event
DeRegister, Link Configure Thresholds, Link Get Information. These primitives can be kept
somewhere separated from every media specific SAPs’ primitives. So we can replace 7.2.2.2 as
the following:
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Optimized general MIH model (3)
•
7.2.2.2 Common_Link_SAP
•
These primitives apply to every media dependent SAPs, that is to say apply to 802.3_SAP,
802.11_SAP, 802.16_SAP,3GPP_SAP and 3GPP2_SAP:
table 15-Common_LINK_SAP Primitives
No
Primitives
Service Category
Description
1
Link Event Discover
Command
Discover Link
capabilities
2
Link Event Register
Command
Register for event
notifications
3
Link Event Deregister
Command
Deregister for event
notifications
4
Link Configure
Command
Thresholds
Configure link
thresholds for Link
Events
5
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Link Get Information
Information
Request for IEs
Optimized general MIH model (4)
•
Both the MIH_SAP and the media specific SAPs’ primitives can add the following parameters
(for the purpose of primitives identified and distributed by MIH):
Name
Type
Valid Range
Description
SourceID
Originator of
Valid MIH user identifier,
Used to identify various user
primitives
link layer identifier,
part, various link layer, or MIH
or MIHF identifier
function, so as to associate the
response
DestID
Receiver of
Valid MIH user identifier,
Used to identify the receiver of
link layer identifier,
the primitives, so they can be
or MIHF identifier
sent to the correct user part,
primitives
link layer, or MIH function for
handling
SID
Service
Enumeration: Event/Command/
Used to identify the service
Identifier
Information (extensible)
category of the primitives, so
they can be sent to the correct
MIH sub-function for handling
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