1. IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-10-0129-01-0000
Title: IEEE Key Features
Date Submitted: July 12, 2010
Presented at IEEE session #39 in San Diego
Authors or Source(s):
Junghoon Jee (ETRI)
Abstract: This contribution highlights the key features of IEEE defines MIH services to facilitate the discussion with IEEE TG 1 1

2. IEEE 802.21 presentation release statements
This document has been prepared to assist the IEEE Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.
The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE
The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws < and in Understanding Patent Issues During IEEE Standards Development 2

3. Overview
IEEE Std ™-2008
IEEE Standard for Local and metropolitan area networks - Part 21: Media Independent Handover Services
Beyond Handover, Toward “Multi-Radio Services”
Main objective was to minimize interruption (e.g., packet loss, latency, etc.)
Contains mechanisms to enable Network Discovery & Selection among heterogeneous network environments
Therefore, applicable to overall Multi-Radio interworking problem space
Coexistence, Resource Mgmt., Power mgmt., Bearer and Service Optimization
Relevant Efforts
IEEE Wireless Network Management SG
IEEE Emergency Services Working Group
IEEE Multi-Radio Power Management SG (past)

4. Initial Motivations to launch 802.21
Fill the gab between Mobility Management Protocols (MMP) and lower layer MAC
Lower layer information is required to optimize MMP
Radio Status (LGD, LU, LD)
Target PoA
Inter-RAT ND&S
Impossible to deliver other radio conditions through current serving radio
MS’s available neighboring network at the current location?
Define the IEEE 802 Standard for:
Standard way to deliver lower layer link information to higher layer (e.g., by defining MAC_SAP primitives)
Standardize way to represent and heterogeneous neighboring network information and share among MS and Network
Mechanisms to enable the higher layers to control the lower layer behavior (e.g., connectivity, scanning)

5. IEEE 802.21 MIH Key Features Key provided MIH Service categorization
Event Service, Command Service, Information Service
MIHF Entity (MIH Functional Entity)
An entity having one or more of MIH
Facilitates Multi-Radio network discovery and selection
Provides abstracted services to higher layers.
Communicates with the lower layers of the mobility-management protocol stack through technology-specific interfaces.
MIH Communication
Remote MIHF peer entities communicates through MIH protocol frames
REQUEST and RESPONSE
One way INDICATION

6. IEEE 802.21 MIH Key Features (2)
MIH Event Service
State Change
Predictive
Target Link
MIH Information Service
Available Networks
Neighbor Maps
Network Services
MIH Command Service
Link Connectivity Control
Client Initiated
Network Initiated
Vertical Handovers
provides seamless vertical handover solution across IEEE 802 and 3G(+) networks

7. MIH Communication Model
Candidate PoA
Network Side
MIH PoS
Client Side
RP2
RP4
RP5
MIH
MIH PoS
MIH
RP1
Serving PoA
RP4 MN
Non PoA
Network Entity
RP5
RP4
RP3
MIH PoS
Non PoA
Network Entity
PoA:L2 Point of Attachment (AP/BS)
PoS: Point of Service
MN: Mobile Node
MIH: Media Independent Handover

8. MIH Event Service
Enables the higher layers (L3 or above) to capture the radio link status in a standard manner
Mapping media specific link layer events to Media Independent Events
Link layer events
From specific link layers to MIHF
MIH events
From MIHF to higher layers

9. MIH Event Service (2) Remote Events
MIH events between different MIH entities
Event lists
(MIH) Link_Detected.indication
(MIH) Link_Up.indication
(MIH) Link_Down.indication
(MIH) Link_Parameters_Report.indication
(MIH) Link_Going_Down.indication
(MIH) Link_Handover_Imminent.indication
(MIH) Link_Handover_Complete.indication
(MIH) Link_PDU_Transmit_Status.indication

10. MIH Event Service (3)
MIH Remote Event Service Flow

11. MIH Command Service
Enables the higher layers to control the link connectivity
Remote communication among peer MIHF entities
Link commands
From MIH to link layers
MIH commands
From upper layer to MIH

12. MIH Command Service (2) Command lists MIH_Capability_Discover
MIH_Register/MIH_Deregister
MIH_Event_Subscribe/MIH_Event_Unsubscribe
MIH_Link_Actions
MIH_Link_Get_Parameters
MIH_Net_HO_Candidate_Query, MIH_MN_HO_Candidate_Query
MIH_N2N_HO_Query_Resources
MIH_Net_HO_Commit, MIH_MN_HO_Commit
MIH_MN_HO_Complete, MIH_N2N_HO_Complete
MIH_Get_Information
MIH_Push_Information

13. MIH Command Service (3) MIH Remote Command Service Flow

14. MIH Information Service
Provides a framework and corresponding mechanisms to discover and obtain surrounding heterogeneous network information
Information Elements (IEs)
General overview of network
Location of PoAs, IP version, Operator
Link layer parameters
Channel, frequency, PHY types, data rates,
Supported higher layer services or applications at the access network
MIP, VPN, SIP, etc.

15. MIH Information Service (2)
Two types of information transfer
Pull Mode: GET-RESPONSE
Push Mode: One way INDICATION
Added from IEEE /D12.0
Push Model
Information can be pushed to MN by the operator
MIH Registration is mandatory for use with this push model
MIH_Push_Information

16. Relationship with other Groups
Media specific changes
IEEE
IEEE
MIH capability support in L2 MAC frames
MAC container to deliver MIH frames over L2
L2 SAP extensions to support MIHF
Higher layer MIH support
Higher layer transport of MIH frames
RFC IEEE Mobility Services Framework Design (MSFD) RFC 5677 (Proposed Standard)
MIHF Discovery
RFC Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for IEEE Mobility Services (MoS) Discovery RFC 5678 (Proposed Standard)
RFC Locating IEEE Mobility Services Using DNS RFC 5679 (Proposed Standard)

17. IEEE 802.21 Prehistory Jan 2003 March 2003 May 2003 July 2003
Sept 2003
Nov 2003
Jan 2004
Mar 2004
802 Handover Tutorial
First Meeting of ECSG
PAR & 5C
Submission
Initial WG Meeting
CFI.
802 Handover ECSG Formed by SEC
EC PAR Approval
CFI :
ECSG Docs :

18. IEEE 802.21 History & Timeline
WG Created
14 Initial Proposals
Letter Ballot
Sponsor Ballot*
Initiate Amendments to u, g. IETF (MIPSHOP) on L3
Spec Published
Call For Proposals
Down selection Initial Draft Text

19. IEEE 802.21 Current Status 802.21 WG 802.21a TG 802.21b TG
Baseline specification completed in 2008
Leadership Change from March 2010
Chair: Subir Das (Telcordia), Vice Chair: Juan Carlos Zuniga (InterDigital), Secretary: Anthony Chan (Huawei)
802.21a TG
Security Extensions to Media Independent Handover Services
MIH Secure Signaling, Optimized Authentication
Chair: Yoshihiro Ohba (Toshiba), Editor: Lily Chen (NIST)
Proposal discussion
802.21b TG
Handovers for Downlink only Technologies (T-DMB, DVB-H, Media-FLO)
Chair: Juan Carlos Zuniga (InterDigital), Vice Chair: Burak Simsek (Fraunhofer) , Editor: Hongseok Jeon (ETRI)
Preparing Letter Ballot

20. IEEE 802.21 Current Status (2) 802.21c TG
Optimized Single Radio Handover Solutions
Chair: Junghoon Jee (ETRI), Vice Chair: Anthony Chan (Huawei)
Proposal Discussion
Wireless Network Management SG
Chair: Johannes Lessmann (NEC)
Preparing PAR and 5C
Related Work
Emergency Service: WG
Multi-Radio Power Management SG (past)

21. Thank You! Further information IEEE Std 802.21™-2008
IEEE Tutorial