1、 TIA STANDARD TIA-735 Enhancements to TIA/EIA-41-D Telecommunications Industry Association; May 1995. J-STD-008 ANSI J-STD-008 Personal Station-Base Station Compatibility Requirements for 1.8 to 2.0 GHz Code Division Multiple Access (CDMA) Personal Communications Systems, approved for publishing. TS
2、B58 TSB58 Administration of Parameter Value Assignments for TIA/EIA Wideband Spread Spectrum Standards, December 1995. TSB64 TSB64 IS-41-B Support for Dual-Mode Wideband Spread Spectrum Systems, December 1993. TSB74 TSB74 Support for 14.4 kbps Data Rate and PCS Interaction for Wideband Spread Spectr
3、um Cellular Systems, December 1995. TIA/EIA-41-D Chapter 1, page 3 line 46: TDMA: IS-136.1 TIA/EIA IS-136.1-A TDMA Cellular/PCS - Radio Interface - Mobile Station - Base Station Compatibility - Digital Control Channel, Rev. A, October 1996. IS-136.2 TIA/EIA IS-136.2-A TDMA Cellular/PCS - Radio Inter
4、face - Mobile Station - Base Station Compatibility - Traffic Channels and FSK Control Channel, Rev. A, October 1996. TIA-735 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 Wire
5、less Features Descriptions 3 Network Directed System Selection (NDSS) 3. WIRELESS FEATURES DESCRIPTIONS This section provides Stage 1 Feature Descriptions (according to the structure in TIA/EIA-664 ) for the Features supported by this Standard. 3.1 Network Directed System Selection (NDSS) The Networ
6、k Directed System Selection (NDSS) feature is a network capability that provides a network based mechanism for a service provider, based on various customer and service provider specified criteria, to automatically direct a subscribers Mobile Station (MS) to a desired serving system. The serving sys
7、tem could be any system available to the MS, regardless of frequency band (cellular A/B or PCS bands A/B/C/D/E/F) or technology (analog or digital). NDSS consists of procedures that allow wireless subscribers to register upon a preferred system while they are roaming (i.e., outside of their home sys
8、tem) without manual intervention by the subscriber. NDSS allows an MS to automatically register with a preferred serving system or to be automatically directed by their home system to a suggested system based on bilateral agreements between the serving system and home system. When an MS registers on
9、 a visited system, the network may direct the MS from that system to another system. The network may provide information which controls the status of the Enhanced Roaming Indicator in the MS. NDSS may override system selection procedures in the MS. The subscriber should have the ability, however, to
10、 suppress NDSS, and use the MSs system selection procedure. The status of NDSS (i.e., Active, Suppressed) is maintained in the home system, and may be changed upon request by the subscriber. Applicability to Telecommunications Services NDSS is applicable to all telecommunications services. 3.1.1 Nor
11、mal Procedures With Successful Outcome Authorization NDSS may be made generally available for all subscribers by their service provider. De-Authorization NDSS may be withdrawn by the service provider. Registration NDSS has no registration. De-Registration NDSS has no de-registration. TIA-735 1 2 3 4
12、 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 Network Directed System Selection (NDSS) 4 Wireless Feature Descriptions Activation NDSS is activated upon authorization. De-Activation
13、NDSS is de-activated upon de-authorization. Invocation NDSS is invoked by the home system upon receipt of a registration message. Normal Operation With Successful Outcome This section describes a typical sequence of procedures for a subscriber, whose home and serving systems offer NDSS, which result
14、s in a successful outcome. a. The MS may scan a list of preferred systems. If no preferred systems are found, the MS registers with any available system, provided the system is not on the MSs negative system list. A negative system list is defined as a short list of unacceptable system identificatio
15、ns that is stored in the memory of an MS. These procedures are utilized for all contexts for which registration may occur. b. The serving system requests authorization from the subscribers home system. c. The home system determines whether another system is preferable to the current serving system.
16、d. If the home system determines that another system is preferable, and the subscriber has not suppressed NDSS, it may return information to the serving system requesting it to redirect the MS to a different system. If the redirection attempt is unsuccessful, the current serving system, while not pr
17、eferred, is always assumed to be acceptable. e. If redirection has been requested by the home system, the NDSS capable serving system shall redirect the MS to the preferred system. f. The MS receives the redirection message and attempts registration with the new system. 3.1.2 Exception Procedures or
18、 Unsuccessful Outcome This section lists some of the more probable abnormal situations not described in Normal Procedures With Successful Outcome. Registration None identified. De-Registration None identified. TIA-735 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 3
19、1 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 Wireless Features Descriptions 5 Network Directed System Selection (NDSS) Activation NDSS is considered activated when suppression of NDSS is turned off in the home system. NDSS may be activated by an authorized
20、 subscriber specifying the NDSS activation feature code as in: FC + SEND*. De-Activation NDSS is considered de-activated when the suppression of NDSS is turned on in the home system. The MS then reverts to its internal system selection procedure which was used upon initial system access. NDSS may be
21、 de-activated by an authorized subscriber specifying the NDSS de-activation suppression feature code as in: FC + SEND*. Invocation If, for some reason, the MS cannot complete service redirection (e.g., registration rejection, invalid system identification, no system found, etc.), it re-attempts to r
22、egister with the original visited system and indicates the failure condition. Exceptions While Roaming None identified. Exceptions During Intersystem Hand-off None identified. 3.1.3 Alternative Procedures None identified. 3.1.4 Interactions With Other Services Asynchronous Data Service (ADS) None id
23、entified. Call Delivery (CD) None identified. Call ForwardingBusy (CFB) None identified. TIA-735 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 Network Directed System Selectio
24、n (NDSS) 6 Wireless Feature Descriptions Call ForwardingDefault (CFD) None identified. Call ForwardingNo Answer (CFNA) None identified. Call ForwardingUnconditional (CFU) None identified. Call Transfer (CT) None identified. Call Waiting (CW) None identified. Calling Name Presentation (CNAP) None ide
25、ntified. Calling Name Presentation Restriction (CNAR) None identified. Calling Number Identification Presentation (CNIP) None identified. Calling Number Identification Restriction (CNIR) None identified. Conference Calling (CC) None identified. Data Privacy (DP) None identified. Do Not Disturb (DND)
26、 None identified. Emergency Services (9-1-1) Emergency calls are not subject to NDSS. TIA-735 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 Wireless Features Descriptions 7 Ne
27、twork Directed System Selection (NDSS) Flexible Alerting (FA) None identified. Group 3 Facsimile (G3 Fax) None identified. Incoming Call Screening (ICS) None identified. Message Waiting Notification (MWN) None identified. Mobile Access Hunting (MAH) None identified. Network Directed System Selection
28、 (NDSS) Not applicable. Non-Public Mode Service (NP) None identified. Over-the-Air Service Provisioning (OTASP) OTASP calls are not subject to NDSS. Password Call Acceptance (PCA) None identified. Preferred Language (PL) None identified. Priority Access and Channel Assignment (PACA) None identified.
29、 Remote Feature Control (RFC) None identified. Selective Call Acceptance (SCA) None identified. TIA-735 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 Network Directed System S
30、election (NDSS) 8 Wireless Feature Descriptions Service Negotiation (SN) None identified. Subscriber PIN Access (SPINA) None identified. Subscriber PIN Intercept (SPINI) None identified. Subscriber Confidentiality (SC) None identified. Three-Way Calling (3WC) None identified. User Group ID (UGID) No
31、ne identified. Voice Controlled Services (VCS) None identified. Voice Message Retrieval (VMR) None identified. Voice Privacy (VP) None identified. Voice-based User Identification (VUI) None identified. TIA-735 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
32、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 Network Service Descriptions 9 Subscriber Confidentiality (SC) 4. NETWORK SERVICE DESCRIPTIONS This section describes services used by the wireless system and network operators. Subscribers may or may not be directly aw
33、are of the use of services that are independent of subscriber involvement. 4.1 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 no
34、t have an externally 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 f
35、urther reduces the possibility 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 pe
36、rmanent identity over 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 re-established i
37、n each new system, intersystem 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,
38、the wireless system shall allow the MS to operate with the permanent identity even though a TMSI was previously assigned in another system. TIA-735 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
39、 55 56 57 58 59 60 Definitions 10 Functional Overview5. TIA/EIA-41-D Chapter 1 “Functional Overview“ Modifications 5.1 Definitions (TIA/EIA-41-D Chapter 1, page 6) Full TMSI The combination of TMSI zone and TMSI code. It is a globally unique address for the MS. Full TMSI Timer The full-TMSI timer is
40、 used to automatically deassign the assigned TMSI when the MS roams into a different TMSI zone. The MS starts the full-TMSI timer whenever it first accesses the system in a new TMSI zone. If the timer expires before a new TMSI is assigned, the MS deletes the TMSI and registers again using the IMSI.
41、Network Identification (NID) A number that uniquely identifies a network within a wireless system. Mobile Station Identity (MSID) The identification for a MS, which may be the MIN, or IMSI. Negative List A short list of unacceptable system identifications that is stored in the memory of the MS. Netw
42、orkTMSI The full TMSI transported over the TIA/EIA-41-D network. The NetworkTMSI is mapped to the subscribers MIN or IMSI at either the Serving VLR, or the prior Serving VLR. Temporary Mobile Station Identity (TMSI) An identification number assigned to an MS on a temporary basis by a serving system
43、(e.g., MSC or VLR.) TMSI Code A temporarily assigned MS identification of length up to 32-bits within a TMSI Zone. A TMSI with only a TMSI Code will not provide a globally unique address for an MS. TIA-735 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 3
44、5 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 Functional Overview 11 Definitions TMSI Expiration Time The TMSI expiration time is used to automatically deassign the assigned TMSI. It allows a TMSI to be reassigned periodically and prevents an MS from “holding“ a TMSI d
45、uring extended periods of inactivity. It also helps protect against inadvertent VLR faults which would result in duplicate TMSI assignments. The MS obtains the expiration time value in the message which assigns the TMSI. If the expiration time has passed, the MS deletes the TMSI and uses the IMSI as
46、 its identification. TMSI Zone The administrative area that allows the TMSI Code to be reused. The TMSI Code is unique only within a TMSI Zone and may be reused in a different TMSI Zone. A TMSI consisting of both the TMSI Zone and TMSI Code, however, provides a globally unique address of an MS. 5.2
47、Symbols and Abbreviations (TIA/EIA-41-D Chapter 1, pages 14 through 22) ADS Asynchronous Data Service CNAP Calling Name Presentation DP Data Privacy EIA Electronic Industry Association FAX Facsimile ICS Incoming Call Screening IMSI International Mobile Station Identity ISLP Intersystem Link Protocol
48、 MSID Mobile Station Identity NDSS Network Directed System Selection NID Network Identity NP Non-Public Service OTASP Over-the-Air Service Provisioning PCS Personal Communication Service SC Subscriber Confidentiality SN Service NegotiationTIA Telecommunications Industry Association TMSI Temporary Mo
49、bile Station Identity UG User Group UGID User Group ID VCS Voice Controlled Services VUI Voice-based User Identification TIA-735 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 Definitions 12 Functional OverviewTIA-735 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 Intersystem Handoff Operations 13 FacilitiesDir
