802.21 Media Independent Handover by dfhdhdhdhjr

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									                                     21-05-0363-00-0000-Neighbor_Reports


IEEE 802.21 MEDIA INDEPENDENT HANDOVER
DCN:21-05-0363-00-0000-Neighbor_Reports
Title: Media Independent Neighbor Reports
Date Submitted: September 2005
Presented at IEEE 802.21 session #10 at Garden Grove
Authors or Source(s):
    Vivek Gupta, Intel Corporation
Abstract: This presentation lists key elements used in Neighbor
   Reports across different media technologies
                                          21-05-0363-00-0000-Neighbor_Reports

   IEEE 802.21 presentation release statements
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  <http://standards.ieee.org/guides/opman/sect6.html#6.3>          and      in
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September 2005                       21-05-0363-00-0000-Neighbor_Reports




                 Media Independent
                 Neighbor Reports



                        Presenter
                     Vivek Gupta
                   Intel Corporation


                           Slide 3                               Vivek Gupta
September 2005                      21-05-0363-00-0000-Neighbor_Reports


                      Agenda
 •   Neighbor Reports in 802.11
 •   Neighbor Maps in 802.16
 •   Multi-Radio Neighbor Reports
 •   Key elements in Neighbor Reports
 •   Conclusion




                          Slide 4                               Vivek Gupta
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                 Neighbor Reports in 802.11
• Specified by 802.11k
• Enables the STA to optimize BSS Transition
• Contents are derived from the MIB table
   – dot11RRMNeighborReportTable
• Sent by an AP as non-AP STA requested or
  autonomously




                             Slide 5                               Vivek Gupta
September 2005                                   21-05-0363-00-0000-Neighbor_Reports

    Key Elements of 802.11 Neighbor Report
• MacAddress
     – (BSSID)
• Reachability
     – (not reachable, unknown, reachable)
• Security
     – (RSN Capability of the AP)
• Other Capabilities
     – Spectrum Mgmt, QoS, APSD (Automatic Power Save Delivery), RRM, Block
       Ack
• Key Scope
• Channel Number
• Regulatory Class
     – 2.4GHz, 5GHz
•   Phy Options
•   Timestamp
•   TBTT Offset
•   Beacon Interval

                                       Slide 6                               Vivek Gupta
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                 802.16 Neighbor Maps
• Neighbor Advertisement Messages
• MOB_NBR-ADV messages sent at periodic interval




                           Slide 7                               Vivek Gupta
September 2005                             21-05-0363-00-0000-Neighbor_Reports

    Key Elements of 802.16 Neighbor Graphs
•   Operator ID
•   Phy Profile ID
•   FA Index
•   BS EIRP
•   Neighbor BSID
•   Preamble/Sub Channel Index
•   HO Process Optimization
•   Scheduling Services (QoS)
     –   Unsolicited Grant
     –   Real Time Polling
     –   Non-real time polling
     –   Best Effort
• Available Radio Resource

                                 Slide 8                               Vivek Gupta
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             Multi-Radio Neighbor Reports
• Multi-radio Neighbor Reports need to have
    – Static Information about different access networks
         • PoA Characteristics and other Static Capabilities
• Use Access Network specific Neighbor Report to retrieve
    – Dynamic Information
         • Statistics, State information/parameters, Resource levels at PoAs

• Should 802.21 specify a new Media Independent Report
  format?
    – Need to retrieve information about all available networks in an area
      using current access network
    – May need to retrieve access network specific neighbor report without
      actually powering on the specific radio




                                         Slide 9                               Vivek Gupta
September 2005                                      21-05-0363-00-0000-Neighbor_Reports

     Media Independent Neighbor Reports
• Suggested Key Elements
    – Access Network ID
         • 802.11, 802.16, 3GPP, 3GPP2, etc
    – PoA Characteristics
         • Address
             – MAC Address
         • Location
         • Security Capabilities
             – Secure/Unsecure
         • QoS Capabilities
             – Supported/Not supported
         • MIH Capabilities
             – Supported/Not supported
         • Spectrum Range
             – Channel range
         • Subnet Information
         • Phy Capabilities
             – ???

                                         Slide 10                               Vivek Gupta
September 2005                             21-05-0363-00-0000-Neighbor_Reports

                         Conclusion

 • 802.21 can specify a common Media Independent
   Neighbor report format
 • Media Independent Neighbor Reports can only
   support Static capabilities of different PoAs
 • Access Network specific Neighbour Reports can
   provide insight into more Dynamic information
      – Statistics, Resource levels, State information




                                Slide 11                               Vivek Gupta
September 2005               21-05-0363-00-0000-Neighbor_Reports




                 Backup




                  Slide 12                               Vivek Gupta
    September 2005                           21-05-0363-00-0000-Neighbor_Reports

                     Building 802.11 Neighbor Report
•       It is out scope of 802.11k
•       Possible means:
       – Configure an AP with a list of BSSIDs that are
         neighbors.
       – Utilizing the Beacon Report in order to determine
         which APs can be heard by STAs in the service area
       – Utilizing a secure IAPP protocol such as IEEE
         802.11F, in order to determine whether a
         Reassociation Request has been sent to a legitimate
         member of a known and trusted ESS
                                  Slide 13                               Vivek Gupta
September 2005                                 21-05-0363-00-0000-Neighbor_Reports

        802.11 Neighbor Request/Response Frames

• Action Frames
• Frame body includes:
    –   (Action) Category – Radio Measurement
    –   Action – Neighbor Report Req/Resp
    –   Dialog Token – identify req/resp transaction
    –   Neighbour Report Request Types – for request frame
         • TBTT offset type, or others
    – The SSID element - for request frame
    – Neighbour Report Element – for Report frame
• Request: non-AP STA  AP
• Report: AP  non-AP STA

                                    Slide 14                               Vivek Gupta

								
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