TIA-664 802-B-2007 Wireless Features Description Subscriber Confidentiality.pdf

1、 TIA-664.802-B (Revision of TIA-664.802-A) October 2007Wireless Features Description: Subscriber Confidentiality ANSI/TIA-664.802-B-2007 APPROVED: OCTOBER 23, 2007 REAFFIRMED: FEBRUARY 1, 2013 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through elimina

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19、14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 802-i Contents Wireless Features Description: Subscriber Confidentiality Contents Revision Historyii 1 Network Service Descriptions 1 1.1 Subscriber Confidenti

20、ality (SC) .1 TIA-664.802-B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Revision History 802-ii Revision History Revision Date Remarks IS-735, Revision 0 January 1998 Initia

21、l publication ANSI/TIA/EIA/664-802 July 2000 Initial ANSI publication TIA-664.802-A December 2000 Updated ANSI publication TIA-664.802-B September 2007 Updated publication TIA-664.802-B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

22、42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Network Service Descriptions 802-1 Subscriber Confidentiality (SC) 1 Network Service Descriptions This section describes services used by the wireless system and network operators. Subscribers may or may not be directly aware of the use of ser

23、vices that are independent of subscriber involvement. 1.1 Subscriber Confidentiality (SC) Subscriber Confidentiality (SC) allows the wireless system to assign an MS a Temporary Mobile Station Identity (TMSI) to be used in subsequent communications with the MS. The TMSI should not have an externally

24、visible association with the MSs permanent identity (MIN or IMSI). SC conceals the MSs permanent identity on the air interface and thereby protects the subscriber from fraudulent use of the MSs permanent identity. The wireless system should periodically reassign the TMSI. This further reduces the po

25、ssibility of associating the TMSI with the subscribers permanent identity. The TMSI should be reassigned in a manner that does not reveal the MSs permanent identity. When an MS with a previously assigned TMSI roams into a new system that is SC capable, the MS may not send its permanent identity over

26、 the air interface to the new system. It may send its TMSI only. The new system should uniquely identify the MS using this TMSI to obtain the MSs permanent identity and subscriber information through intersystem transactions. On the other hand, if an MSs TMSI is reestablished in each new system, int

27、ersystem transactions will not be needed. The wireless serving system shall provide system integrity when assigning TMSIs such that each assigned TMSI uniquely identifies a single subscriber within that wireless serving system. If the wireless system is not able to support SC, the wireless system shall allow the MS to operate with the permanent identity even though a TMSI was previously assigned in another system. (This page intentionally left blank.)