1. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 1 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: Title: Varaha Submission Date Submitted: January 8, 2004 Presented at IEEE 802.21 session #NN in Monterey Authors or Source(s): Prasad Govindarajan, Anurag Vohra Abstract: A proposal for Media Independent Handover (MIH), Event Service, and Information Service is presented.

2. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 2 IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 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 802.21. The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html

3. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 3 Proposal Overview Proposal Elements –MIH Function –Event Indication –Information Service Valid Handover Scenarios –802 Family: 3, 11, 15, 16 –Cellular networks

4. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 4 MIH

5. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 5 L2 HO within same L3 Domain AP Internet Intranet Homogeneous Micro Mobility Homogeneous Macro Mobility Heterogeous/Vertical Mobility Inter-domain IP Macro Mobility Switch Router L2 Coverage Detect NW availability Determine NW is HO Candidate –Determine NW is in same L3 Domain Diff SSID, same DHCP 802.3 to 802.11 within an enterprise WiFi subtended to GGSN If Same ESS and WiFi best option, then IAPP –Authentication –Security –Access to end network/server –QoS for session Coordinate with MIHF-NW for HO L3 Domain

6. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 6 HO between Diff L3 Domains AP BTS AP Internet Intranet Homogeneous Micro Mobility Homogeneous Macro Mobility Heterogeous/Vertical Mobility Inter-domain IP Macro Mobility GGSN Switch BSC SGSN Router Detect NW availability Determine NW is HO Candidate –Determine NW is in different L3 Domain Diff SSID, different DHCP WiFi hot spot/enterprise and GPRS/CDMA 1x –Indicate to higher layer mobility(SIP/MIP) Higher layer Mobility Protocol ensures –Authentication –Security –Access to end network/server –QoS for session Coordinate with MIHF-NW for HO –Label-based QoS, Session Identification; MIP L3 Domain

7. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 7 MIH Architecture

8. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 8 MIHF Requirements Support different handoff methodology Support different MIH locations Need to preserve security, auth, and QoS State –Knowledge of L2 auth/setup Network Detection/Selection

9. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 9 MIH Network Side Functional Diagram Mgt Interface Events Info Svc Response Events Info Svc Request Events/ Info Resource Mgt Network InfoSub Info Connection Manager Event & Info Svc Processing Commands Command Resp Policy Mgt Data Traffic L3/L2 BridgingUpper Layer Mobility Protocols CommandsCommand Resp MIH State machine

10. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 10 MIH Network Side Functional Diagram Mgt Interface Events Info Svc Response Events Info Svc Request Events/ Info Resource Mgt Network InfoSub Info Connection Manager Event & Info Svc Processing Commands Command Resp Policy Mgt Data Traffic L3/L2 BridgingUpper Layer Mobility Protocols CommandsCommand Resp MIH Device State Machine State machine

11. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 11 Stack/Transport Architecture Transport across DS SIP –Authentication –Security –Widely Accepted –Extensible –Use UDP/TCP based transport –Identify routable valid handoff candidates/ network selection MIH 802 MAC 802 PHY TCP/UDP IP 802 MAC 802 PHY 802 MAC 802 PHY RLC MAC Phy GMM /SM LLC Apps Info Store & Event DB MIH Policy/Mobility Mgt Function Legacy Interface MIH Transport SIP Voice IMS SAP App SAP

12. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 12 Transport Comparison IAPP 802 MAC 802 PHY TCP/UDP IP 802 MAC 802 PHY 802 MAC 802 PHY RLC MAC Phyd GMM /SM LLC Apps Info Store & Event DB MIH Policy Mgt Function MIH Transport SIP Voice IMS 802.21

13. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 13 Link Layer Optimization Impact Compression, QoS, Optimization –E.g. PPP compression

14. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 14 NW Detection Need to know if in same L3 Domain Need to know if same ESSID or not –Must allow existing auth mechanisms –Must use existing L2 HO mechanisms NW Detection maps to “New Network Available” Event

15. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 15 Admission Control Authentication/Authorization –Use existing mechanisms for each interface Security establishment Accounting –Allow each network or interface to do the accounting

16. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 16 MIH Commands PrepareHandover.request –Parameters: SessionLabel, FromNW, ToNW, Context –Will ensure authentication, QoS, context etc available PrepareHandover.response –Parameters: Success or Failure Reason InitiateHandover.request –Upon successful authentication via PrepareHandover –Ensure L2 Update Frame sent InitiateHandover.response –Parameters: Success or Failure Reason –This is for the IndicateHandover request command HandoverComplete.indication –Parameter: Success or Failure Reason –When the handover is verified, this message is sent HandoverComplete.response –Parameters: Success or Failure Reason PrepareHandover.request PrepareHandover.response MIH NWMIH Device InitiateHandover.request InitiateHandover.response Auth, QoS Confimed Handover HandoverComplete.indication HandoverComplete.response Network Initiated Mobile assisted Handoff

17. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 17 Event Indication

18. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 18 Event info Events are triggers due to: –State change –Timers –Threshold crossing Events are local or remote Events are generated at either the device or network Registration required Events are pushed to subscribers Most event info polled via information service Transport depends on registering entity location

19. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 19 MIH Event Architecture RLC MAC PHY GMM /SM LLC 802 MAC 802 PHY Event Registrar Event Publisher Mobility Mgt Function Mobility Mgt Function Info Store & Event DB Event/Command 802 MAC 802 PHY RLC MAC PHY GMM /SM LLC Client SideServer Side Event Processor Event Registrar Event Publisher Event Processor Sub Info NW Info Info Store & Event DB Sub Info NW Info MIH

20. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 20 Event Processing Event Functional Model At Client or Network Non-802 MAC/Phy 802 MAC 802 PHY Info Store & Event DB Event Service Registrar Apps/ControlUpper Layer Mobility Protocols OS Event Receiver 802 MAC 802 PHY Event Publisher Remote Event Subscriber Legacy Interface Net Mgt Remote Event Recv Remote Event Publisher Non-802 MAC/Phy MIH

21. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 21 Event Types - Measured Measured Events –Direct Measurements RSSI Frame loss/BER Link Rate –Indirect Measurements Calculated values Averaged RSSI Event Name Location Remote/ Local/Both When Generated Generic /Media Specific Instantaneous signal strength Local /Device and Network Settable frequency Link RateBothSettable BERBothSettable Frame LossBothSetttable Averaged signal strength Local /Device and Network Settable

22. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 22 Event Types - Threshold Threshold Events –RSSI Threshold crossing –BER Threshold Crossing –QOS Threshold Crossing –Link Rate Threshold –Other parameters defined from measured/calculated values Event NameLocation Remote/ Local/Both When Generated Generic /Media Specific RSSI Threshold Crossing Local /Device and Network At crossing BER Threshold Crossing BothAt crossing QOS Threshold Crossing BothAt crossing Link Rate Threshold Crossing BothAt crossing

23. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 23 Event Types - Network Detection Network Detection Events –Link Coming Up –Link Up –Link Going Down –Link Down –Policy Update Event NameLocation Remote/ Local/Both When Generated Generic /Media Specific Link Going DownBothAt link indication, predictive algo Link DownBothAt link indication Link Coming UpBothAt link indication, predictive algo Link UpBothAt link indication

24. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 24 Event Info Event Contents –Event ID –EventType –Interface/Network –Value(s) –TimeStamp –Frequency –Source (Local/Remote) –Source ID (MAC, SAP, IP) –Destination (Local/Remote) –Source ID (MAC, SAP, IP)

25. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 25 Event Summary

26. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 26 Standardized Communication Gateway MIMF HO IP MAC Phy 2 L3 Method 1 L2 Method 1Measurements, System Attributes, Authentication, Admisssion 2Measurements, Authentication, Admisssion 3Heterogeneous HO Criteria Measurements, System Attributes, Authentication 4Heterogeneous HO Measurements, primitives, preferences, commands 3 L3 Method IP MAC Phy MIMF IP MAC Phy AP, BTS 4 (SAP) IP MAC Phy

27. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 27 Event Transport Internal –SAPs EventRegister.request –EventID, Interface, Threshold EventUnregister.request –EventID, Interface, Threshold Event.indication –Event Info –Existing legacy APIs OS Network Management External/Remote –Use UDP/TCP based transport –Extensible, Std for multiple id, auth, svcs –Content Format Standardized –Protocol Examples SNMP SIP Event

28. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 28 Information Service

29. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 29 Information Service Model Information is requested on demand and returned to requestor Info collected is either local or remote Info requested is either at network or device Most event info polled via information service –Available networks on device Transport depends on requesting entity location

30. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 30 Info Service Processing Info Service Functional Model Non-802 MAC/Phy 802 MAC 802 PHY Info Store & Event DB Mobility Mgt Function Apps/ControlUpper Layer Mobility Protocols OS Info Receiver 802 MAC 802 PHY Remote Info Requester Legacy Interface Net Mgt Remote Info Requesto Remote info Source Non-802 MAC/Phy MIH

31. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 31 MIH Info Service Architecture RLC MAC PHY GMM /SM LLC 802 MAC 802 PHY Mobility Mgt Function Mobility Mgt Function Info Store & Event DB InfoSvc/Command 802 MAC 802 PHY RLC MAC PHY GMM /SM LLC Client SideServer Side InfoSvc Processor Sub Info NW Info Session Info Info Store & Event DB Sub Info NW Info Session Info

32. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 32 Stack/Transport Architecture Transport across DS SIP –Authentication –Security –Widely Accepted –Extensible –Use UDP/TCP based transport –Identify routable valid handoff candidates/ network selection MIH 802 MAC 802 PHY TCP/UDP IP 802 MAC 802 PHY 802 MAC 802 PHY RLC MAC Phy GMM /SM LLC Apps Info Store & Event DB MIH Policy/Mobility Mgt Function Legacy Interface MIH Transport SIP Voice IMS SAP App SAP

33. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 33 Information Types Local Queries – Higher layer querying lower layer –Number of Interfaces available –Interface Types –QOS Supported by each Interface –RSSI Values –Throughput (Link rate) –BER/Frame Loss (Loss rate) –Interface ID

34. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 34 Information Type Remote Queries – Peer query –Available networks –Allowed Networks –RSSI –Frame/BER –Link Rate –Network Information Effective Load Transport Cost

35. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 35 Information Elements InfoSvc Payload Information –InfoElement ID –InfoType –Interface –Value(s) –TimeStamp –Frequency –Source (Local/Remote) –Source ID (MAC, SAP, IP) –Destination (Local/Remote) –Source ID (MAC, SAP, IP)

36. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 36 Information Element Summary

37. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 37 Standardized Communication Gateway MIMF HO IP MAC Phy 2 L3 Method 1 L2 Method 1Measurements, System Attributes, Authentication, Admisssion 2Measurements, Authentication, Admisssion 3Heterogeneous HO Criteria Measurements, System Attributes, Authentication 4Heterogeneous HO Measurements, primitives, preferences, commands 3 L3 Method IP MAC Phy Mobility function IP MAC Phy AP, BTS 4 (SAP) IP MAC Phy

38. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 38 Information Transport Internal –SAPs InfoRequest.request –InfoID, Interface Info.response –Info in context for that information element –Existing legacy APIs OS Network Management External/Remote –Use UDP/TCP based transport –Extensible, Std for multiple id, auth, svcs –Suggested Mechanisms CAPWAP SIP – RFC 3455 (3GPP)

39. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 39 Conclusion Support –Different handoff methodologies –Different MIH locations –Session based handoffs –Flexibility and extensibility MIH –Define Interfaces/Commands –Suggest Transport to provide location independence Event/Info Services –Define Content –Suggest Transport to provide location independence

40. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 40 Background

41. MIH Proposal Submission Submission Jan 2005 Prasad Govindarajan, Varaha SystemsSlide 41 IAPP Transport Architecture IAPP