Migration to MEID – Nokia View

                                                     Jack Jiang, Nokia Inc.




1   © NOKI...
Outline
    • Background info
    • Nokia plan and readiness
    • Logistics and operation considerations
    • Other conc...
MEID
    • MEID - Mobile Equipment Identity
    • MEID (14 hexadecimal digits, 56 bits) to be used to replace 32 bit ESN,
...
ESN & UIMID
    • ESN – Electronic Serial Number is a 32 bit number that presently used on
      CDMA networks
       • ES...
Pseudo ESN (pESN)
    • Pseudo ESN is a 32 bit number that has the reserved ESN manufacture code
      (i.e. 0x80), follow...
Nokia Plan
    • We started to draw a migration plan in the early 2004. We were based upon
      initial TIA assumption th...
Phase I &. Phase II


                                                       Serving                     Home
            ...
Nokia Readiness
    • Phase I – 3Q05

                  Nearly all models of terminals, which first introduced in 3Q05 and...
Logistics and Operation Considerations
                        (1)
    • Nokia will continue to use ESN only for terminals...
Logistics and Operation Considerations
                         (2)
     • Nokia looking forward to carriers’ feedback upo...
Other Concerns
     • ESN reserve and assignment

               New ESN blocks availability to Nokia?
           •
      ...
Recommendation

     • Be prepared as soon as possible


     • It is not a trivial task

                Take about a yea...
Thank You




13   © NOKIA   MEID-CDG.PPT / Feb 2005 / Jack Jiang
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Nokia's View on Migration to MEID

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Nokia's View on Migration to MEID

  1. 1. Migration to MEID – Nokia View Jack Jiang, Nokia Inc. 1 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  2. 2. Outline • Background info • Nokia plan and readiness • Logistics and operation considerations • Other concerns • Recommendation 2 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  3. 3. MEID • MEID - Mobile Equipment Identity • MEID (14 hexadecimal digits, 56 bits) to be used to replace 32 bit ESN, which may be exhausted by 2005 • In addition to larger numbering space, MEID • Compatible with 3GPP terminals for multi-technology devices (e.g. RR = 99) • Separate 3GPP2 terminals from 3GPP (i.e. RR = A0-FF for CDMA; RR = 00-99 reserved for use as 3GPP IMEIs) • MEID format 3 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  4. 4. ESN & UIMID • ESN – Electronic Serial Number is a 32 bit number that presently used on CDMA networks • ESN is used as an input to authentication • ESN is used to derive the Public Long Code Mask (PLCM) • Only 256 distinct manufacturer assignment blocks/codes existed • ESN format: 8 bits Manufacturer Code + 24 bits serial number • UIMID is a 32 bit number that identifies a R-UIM card for use on CDMA networks • UIMID shares same address space with ESN • Each UIMID should be unique, not matching any other assigned UIMID or ESN • UIM-ID replace ESN in air interface message and TIA-41 message when the R-UIM card is programmed to use UIMID (i.e. R_UIM usage indicator = UIMID) instead of ESN (i.e. R-UIM usage indicator = ESN) 4 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  5. 5. Pseudo ESN (pESN) • Pseudo ESN is a 32 bit number that has the reserved ESN manufacture code (i.e. 0x80), followed by a 24 bit hash of the 56 bit MEID using the SHA-1 algorithm • MEID to Pseudo ESN mapping fixed • Pseudo ESN not unique • Pseudo ESN not match any UIMID or ESN (also referred as true ESN), because they have an unique manufacture code of 0x80 • For MEID-equipped mobile, pseudo ESN is used in place where ESN is used • RN_HASH_KEY, to randomize the start of transmission in CDMA systems • IMSI_M & IMSI_T • CAVE Authentication input • ESN based PLCM if (P_REV<11) • Pseudo-random number generator for CDMA timer-based registration • CDMA status response / extended status response message • LAC header on CDMA r-csch 5 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  6. 6. Nokia Plan • We started to draw a migration plan in the early 2004. We were based upon initial TIA assumption that ESN exhaust could happen in 2005. • We believe that a phase approach would be necessary Phase I – the MS equipped with MEID. MEID is not transmitted • • Pseudo ESN (not MEID) is used over air interface to replace ESN • It is backward compatibility to existing networks (i.e. PREV<11) • It requires some upgrade to carriers back office systems • Known issue – a chance of PLCM collision Phase II – the MS equipped with MEID. MEID will be transmitted • • MEID will be used over air interface (per Release D standard) • It requires release D networks (i.e. PREV=11 and up) • It requires upgrade to networks and related back office systems • No PLCM collision issue • Phase I solution still required when the MS talks to legacy networks Phase I.5 – the MS to support MEID provision over the air • • MEID-equipped MS to support 683D (prior to Release D) 6 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  7. 7. Phase I &. Phase II Serving Home Network Network pESN, MSID pESN, MSID (Legacy) pESN-based PLCM MEI D Phase I Serving Home Network Network MEID, MSID MEID, pESN, MSID (Release D) MEID-based PLCM, MEI Or other methods D Phase II 7 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  8. 8. Nokia Readiness • Phase I – 3Q05 Nearly all models of terminals, which first introduced in 3Q05 and later, • are having a capability to ship using either MEID (or ESN) Business infrastructure and manufacturing systems are upgraded to • support MEID products MEID equipped test terminals are available now • • Phase II – TBD (network dependent) Industry consensus needed for us to move to Phase II • Nokia supports the idea to get release-D MEID feature deployed as early • as possible to reduce the risk of PLCM collision • Phase I.5 – 2H05 (if required) To support IS683D MEID related features in 2H05 • Need input from carriers and infra-vendors • 8 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  9. 9. Logistics and Operation Considerations (1) • Nokia will continue to use ESN only for terminals that introduced prior to the middle of 2005 • Nokia will have MEID/ESN dual capability for terminals that introduced in the middle of 2005 and later • Nokia will continue to use ESN only for TDMA terminals for their product lifetime • Nokia encourages carriers to adopt MEID equipped terminals as soon as possible to help diminish the possibility of ESN availability literally stopping terminal supply 9 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  10. 10. Logistics and Operation Considerations (2) • Nokia looking forward to carriers’ feedback upon MEID terminals: When to start requiring MEID terminals in commercial shipments? • When to start requiring MEID terminal prototypes? • When to start requiring MEID terminals in Field Testing? • Label and barcode requirements (e.g. Hexadecimal representation only) • EDI/EDF flat-file requirements (e.g. MEID only) • User Interface requirements (e.g. a short cut to display MEID and pESN) • Security requirements (e.g. A-key checksum to use pESN) • • Nokia ready and willing to assist any carrier begin the transition to MEID, e.g. • Testing EDI/EDF systems • Changing label formats • Testing UI and/or security requirements • …… etc. • Nokia has teams in place from various disciplines including logistics and customer development to address customers need in transition to MEID 10 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  11. 11. Other Concerns • ESN reserve and assignment New ESN blocks availability to Nokia? • Any policy changes regarding ESN assignment by TIA? • Latest ESN exhaustion estimate from TIA? • • Carriers awareness and readiness • UIMID • 32-bit UIMID code will be used up soon as same as ESN code • No recommendation yet from the industry on the UIMID issue • Nokia proposed to use 56-bit UIMID code to replace 32-bit UIMID, just as MEID to replace ESN 11 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  12. 12. Recommendation • Be prepared as soon as possible • It is not a trivial task Take about a year (working on background) to get ready to support MEID • products Most of operation systems have to be upgraded, e.g. manufacturing, • inventory, shipping & handling, customer cares, etc. 12 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang
  13. 13. Thank You 13 © NOKIA MEID-CDG.PPT / Feb 2005 / Jack Jiang

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