1. Mobile Equipment Identifiers for cdma 2000 Source: Scott Migaldi Motorola (847)523-7404 w10265@email.mot.com Copyright Statement The contributor grants a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner's name any Organizational Partner's standards publication even though it may include portions of the contribution; and at the Organizational Partner's sole discretion to permit others to reproduce in whole or in part such contributions or the resulting Organizational Partner's standards publication. The contributor must also be willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions, as appropriate. Notice Permission is granted to 3GPP2 participants to copy any portion of this contribution for the legitimate purpose of the 3GPP2. Copying this contribution for monetary gain or other non-3GPP2 purpose is prohibited.

2. Options for Mobile Equipment Identity Continue to Use 32-bit ESNs –Current ESNs will be depleted in the near future Use 56-bit EESN –Impacts to the network are well known –Uses the ESN in a ‘traditional’ manner Use new type of Equipment Identifier –Solves ESN exhaustion –Could be globally universal –Could be used to only identify ME instead of subsciption and ME

3. What is ESN Used For? Registration –Optionally used in most air interface standards as part of registration messages. Fraud Control –Many existing systems tie ESN to MIN/IMSI for purposes of fraud control. Authentication –Used in the generation of SSD and AuthR. CDMA Traffic Channel Encoding –Provides MS specific channel separation/isolation based on a unique ESN.

4. Issues Continue to Use 32-bit ESNs –ESNs will deplete in a few years –Efforts to stretch the depletion date out only postpone the inevitable

5. Issues Use 56-bit EESN –Already defined in standards –Can’t be used in analog mode –Will affect post network systems –Does not solve issue of equating equipment with a subscription

6. Possible New Direction Use Mobile Equipment IDentifier (MEID) –Can be used to identify equipment only –Can be made to be universal e.g. independent of access mode –Contains more than just manufacture information –Up to an Exabyte [2 60 ] (>1 Quintrillion) unique codes

7. Benefits of Using MEID* To ease ESN exhaustion: –The fields in the MEID are coded with the hexadecimal coding. The addressing space is quite large and can certainly resolve the ESN exhaustion issue. Can even be extended further if a hex MEID is used in place of a BCD. To provide quality tracking for Manufacturers: –MEID can provide not only the manufacturer code of the ME, but also can provide the factory code, type approval code, and serial number. These pieces of information can be used for quality tracking. The MC allotment can be longer than 2 8 perhaps 2 10. To provide quality tracking for Service Providers: –MEID can help service providers identify the problematic ME to the levels of model, manufactured factory and the lot numbers. The information can be used for corrective or preventive actions to improve the service quality. The information can also be used to identify quality ME to minimize the risk for any future service challenged action. To simplify global ME Authentication: –Currently, TIA/TR45.3 and several GSM communities have adopted IMEI as the 3G MEID. Adopting MEID in 3GPP2 will benefit service providers, who either already own global operations (especially, multi-access technologies) or intend to enter the global operations, by simplifying the registration and the ME authentication process. *Some items sourced from S10-20000905-002R1 Nokia

8. Additional Considerations The MEID would only be assigned to the ME Assignment of MCs would need to be handled by a responsible technology neutral administrator. MFCs need to be assigned to manufactures other than ME vendors e.g. test and measurement equipment companies. MEID would not be used as part of the subscription authentication process. MEID could be used to track stolen mobiles MEID could be used for RF finger printing MEID needs to be securely stored on the ME to avoid cloned MEIDs.