ETSI TS 124 312 V8.4.0 (2010-01) Technical Specification Universal Mobile Telecommunications System (UMTS); LTE; Access Network Discovery and Selection Function (ANDSF) Management Object (MO) (3GPP TS 24.312 version 8.4.0 Release 8) 3GPP TS 24.312 version 8.4.0 Release 8 1 ETSI TS 124 312 V8.4.0 (2010-01) Reference RTS/TSGC-0124312v840 Keywords LTE, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). 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Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http://webapp.etsi.org/key/queryform.asp. ETSI 3GPP TS 24.312 version 8.4.0 Release 8 3 ETSI TS 124 312 V8.4.0 (2010-01) Contents Intellectual Property Rights ................................................................................................................................ 2 Foreword ............................................................................................................................................................. 2 Foreword ............................................................................................................................................................. 6 1 Scope ........................................................................................................................................................ 7 2 References ................................................................................................................................................ 7 3 Definitions and abbreviations ................................................................................................................... 8 3.1 Definitions .......................................................................................................................................................... 8 3.3 Abbreviations ..................................................................................................................................................... 8 4 ANDSF MO ............................................................................................................................................. 8 5 ANDSF MO parameters ......................................................................................................................... 11 5.1 General ............................................................................................................................................................. 11 5.2 Node: <X> ....................................................................................................................................................... 11 5.3 <X>/Name ....................................................................................................................................................... 11 5.4 <X>/Policy ....................................................................................................................................................... 11 5.5 <X>/Policy/<X> .............................................................................................................................................. 11 5.6 <X>/Policy/<X>/RulePriority ......................................................................................................................... 12 5.7 <X>/Policy/<X>/PrioritizedAccess ................................................................................................................. 12 5.8 <X>/Policy/<X>/PrioritizedAccess/<X> ........................................................................................................ 12 5.9 <X>/Policy/<X>/PrioritizedAccess/<X>/ AccessTechnology........................................................................ 12 5.10 <X>/Policy/<X>/PrioritizedAccess/<X>/ AccessId ....................................................................................... 13 5.10A <X>/Policy/<X>/PrioritizedAccess/<X>/ SecondaryAccessId ........................................................................ 13 5.11 <X>/Policy/<X>/PrioritizedAccess/<X>/ AccessNetworkPriority ................................................................ 13 5.12 <X>/Policy/<X>/ValidityArea ........................................................................................................................ 14 5.13 <X>/Policy/<X>/ValidityArea/3GPP_Location.............................................................................................. 14 5.14 <X>/Policy/<X>/ValidityArea/3GPP_Location/<X> ..................................................................................... 14 5.15 <X>/Policy/<X>/ValidityArea/3GPP_Location/<X>/PLMN......................................................................... 15 5.16 <X>/Policy/<X>/ValidityArea/3GPP_Location/<X>/TAC ............................................................................ 15 5.17 <X>/Policy/<X>/ValidityArea/3GPP_Location/<X>/LAC ............................................................................ 15 5.18 <X>/Policy/<X>/ValidityArea/3GPP_Location/<X>/GERAN_CI ................................................................ 15 5.18A <X>/Policy/<X>/ValidityArea/3GPP_Location/ <X>/UTRAN_CI ................................................................ 16 5.18B <X>/Policy/<X>/ValidityArea/3GPP_Location/ <X>/EUTRA_CI ................................................................. 16 5.19 <X>/Policy/<X>/ValidityArea/3GPP2_Location ............................................................................................ 16 5.20 <X>/Policy/<X>/ValidityArea/3GPP2_Location/1x ...................................................................................... 17 5.21 <X>/Policy/<X>/ValidityArea/3GPP2_Location/1x/<X> .............................................................................. 17 5.22 <X>/Policy/<X>/ValidityArea/3GPP2_Location/1x/<X>/ SID ..................................................................... 17 5.23 <X>/Policy/<X>/ValidityArea/3GPP2_Location/1x/<X>/ NID .................................................................... 17 5.24 <X>/Policy/<X>/ValidityArea/3GPP2_Location/1x/<X>/ Base_ID .............................................................. 18 5.25 <X>/Policy/<X>/ValidityArea/3GPP2_Location/HRPD ................................................................................ 18 5.26 <X>/Policy/<X>/ValidityArea/3GPP2_Location/HRPD/<X> ....................................................................... 18 5.27 <X>/Policy/<X>/ValidityArea/3GPP2_Location/HRPD/<X>/ Sector_ID ..................................................... 18 5.27A <X>/Policy/<X>/ValidityArea/3GPP2_Location/HRPD/<X>/ Netmask ....................................................... 19 5.28 <X>/Policy/<X>/ValidityArea/WiMAX_Location ......................................................................................... 19 5.29 <X>/Policy/<X>/ValidityArea/WiMAX_Location/<X> ................................................................................ 19 5.30 <X>/Policy/<X>/ValidityArea/WiMAX_Location/<X>/NAP-ID ................................................................. 19 5.31 <X>/Policy/<X>/ValidityArea/WiMAX_Location/<X>/BS-ID .................................................................... 20 5.32 <X>/Policy/<X>/ValidityArea/WLAN_Location ........................................................................................... 20 5.33 <X>/Policy/<X>/ValidityArea/WLAN_Location/<X> .................................................................................. 20 5.33A <X>/Policy/<X>/ValidityArea/WLAN_Location/<X>/HESSID ................................................................... 20 5.34 <X>/Policy/<X>/ValidityArea/WLAN_Location/<X>/SSID ........................................................................ 20 5.35 <X>/Policy/<X>/ValidityArea/WLAN_Location/<X>/BSSID ...................................................................... 21 5.36 <X>/Policy/<X>/ValidityArea/Geo_Location ................................................................................................ 21 5.36A <X>/Policy/<X>/ValidityArea/Geo_Location/Circular .................................................................................. 21 5.36B <X>/Policy/<X>/ValidityArea/Geo_Location/Circular/<X> ......................................................................... 21 ETSI 3GPP TS 24.312 version 8.4.0 Release 8 4 ETSI TS 124 312 V8.4.0 (2010-01) 5.36C <X>/Policy/<X>/ValidityArea/Geo_Location/Circular/<X>/ AnchorLatitude .............................................. 22 5.36D <X>/Policy/<X>/ValidityArea/Geo_Location/Circular/<X>/ AnchorLongitude ........................................... 22 5.36E <X>/Policy/<X>/ValidityArea/Geo_Location/Circular/<X>/ Radius ............................................................ 22 5.37 <X>/Policy/<X>/Roaming .............................................................................................................................. 22 5.38 <X>/Policy/<X>/TimeOfDay.......................................................................................................................... 23 5.39 <X>/Policy/<X>/TimeOfDay/<X> ................................................................................................................. 23 5.40 <X>/Policy/<X>/TimeOfDay/<X>/TimeStart ................................................................................................ 23 5.41 <X>/Policy/<X>/TimeOfDay/<X>/TimeStop ................................................................................................ 23 5.42 <X>/Policy/<X>/TimeOfDay/<X>/DateStart ................................................................................................. 24 5.43 <X>/Policy/<X>/TimeOfDay/<X>/DateStop ................................................................................................. 24 5.44 Void .................................................................................................................................................................. 25 5.45 Void .................................................................................................................................................................. 25 5.46 Void .................................................................................................................................................................. 25 5.47 Void .................................................................................................................................................................. 25 5.48 <X>/Policy/<X>/UpdatePolicy ....................................................................................................................... 25 5.49 <X>/DiscoveryInformation .............................................................................................................................. 25 5.50 <X>/DiscoveryInformation/<X> ..................................................................................................................... 25 5.51 <X>/DiscoveryInformation/<X>/AccessNetworkType .................................................................................. 25 5.52 <X>/DiscoveryInformation/<X>/AccessNetworkArea ................................................................................... 26 5.53 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location ....................................................... 26 5.54 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location/<X> .............................................. 26 5.55 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location/<X>/PLMN .................................. 27 5.56 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location/<X>/TAC ..................................... 27 5.57 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location/<X>/LAC ..................................... 27 5.58 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP_Location/<X>/GERAN_CI .......................... 27 5.58A <X>/DiscoveryInformation/<X>/ AccessNetworkArea/3GPP_Location/<X>/UTRAN_CI ........................... 28 5.58B <X>/DiscoveryInformation/<X>/ AccessNetworkArea/3GPP_Location/<X>/EUTRA_CI ........................... 28 5.59 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location ..................................................... 28 5.60 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/1x ................................................ 28 5.61 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/1x/<X> ....................................... 29 5.62 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/1x/<X>/SID ................................ 29 5.63 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/1x/<X>/NID ............................... 29 5.64 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/1x/<X>/Base_ID ........................ 29 5.65 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/HRPD .......................................... 30 5.66 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/HRPD/<X> ................................. 30 5.67 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/HRPD/<X>/Sector_ID ............... 30 5.67A <X>/DiscoveryInformation/<X>/AccessNetworkArea/ 3GPP2_Location/HRPD/<X>/Netmask.................. 30 5.68 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WiMAX_Location .................................................. 31 5.69 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WiMAX_Location/<X>.......................................... 31 5.70 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WiMAX_Location/<X>/NAP-ID ........................... 31 5.71 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WiMAX_Location/<X>/BS-ID .............................. 31 5.72 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WLAN_Location ..................................................... 32 5.73 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WLAN_Location/<X> ............................................ 32 5.73A <X>/DiscoveryInformation/<X>/AccessNetworkArea /WLAN_Location/<X>/HESSID ............................. 32 5.74 <X>/DiscoveryInformation/<X>/AccessNetworkArea /WLAN_Location/<X>/SSID .................................. 32 5.75 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ WLAN_Location/<X>/BSSID ............................... 33 5.76 <X>/DiscoveryInformation/<X>/AccessNetworkArea/ Geo_Location .......................................................... 33 5.76A <X>/DiscoveryInformation/<X>/ AccessNetworkArea /Geo_Location/Circular ........................................... 33 5.76B <X>/DiscoveryInformation/<X>/ AccessNetworkArea /Geo_Location/Circular/<X> .................................. 33 5.76C <X>/DiscoveryInformation/<X>/ AccessNetworkArea/Geo_Location/Circular/<X>/AnchorLatitude ......... 34 5.76D <X>/DiscoveryInformation/<X>/ AccessNetworkArea/Geo_Location/Circular/<X>/AnchorLongitude ...... 34 5.76E <X>/DiscoveryInformation/<X>/ AccessNetworkArea/Geo_Location/Circular/<X>/Radius ....................... 34 5.77 <X>/DiscoveryInformation/<X>/ AccessNetworkInformationRef ................................................................. 34 5.78 <X>/UE_Location ........................................................................................................................................... 35 5.79 <X>/UE_Location/3GPP_Location ................................................................................................................. 35 5.80 <X>/UE_Location/3GPP_Location/<X> ........................................................................................................ 35 5.81 <X>/UE_Location/3GPP_Location/<X>/PLMN ............................................................................................ 35 5.82 <X>/UE_Location/3GPP_Location/<X>/TAC ............................................................................................... 35 5.83 <X>/UE_Location/3GPP_Location/<X>/LAC ............................................................................................... 36 5.84 <X>/UE_Location/3GPP_Location/<X>/GERAN_CI ................................................................................... 36 5.84A <X>/UE_Location/3GPP_Location/<X>/ UTRAN_CI ................................................................................... 36 5.84B <X>/UE_Location/3GPP_Location/<X>/ EUTRA_CI .................................................................................... 36 ETSI 3GPP TS 24.312 version 8.4.0 Release 8 5 ETSI TS 124 312 V8.4.0 (2010-01) 5.85 <X>/UE_Location/3GPP2_Location ............................................................................................................... 37 5.86 <X>/UE_Location/3GPP2_Location/1x .......................................................................................................... 37 5.87 <X>/UE_Location/3GPP2_Location/1x/<X> ................................................................................................. 37 5.88 <X>/UE_Location/3GPP2_Location/1x/<X>/SID .......................................................................................... 37 5.89 <X>/UE_Location/3GPP2_Location/1x/<X>/NID ......................................................................................... 37 5.90 <X>/UE_Location/3GPP2_Location/1x/<X>/Base_ID .................................................................................. 38 5.91 <X>/UE_Location/3GPP2_Location/HRPD ................................................................................................... 38 5.92 <X>/UE_Location/3GPP2_Location/HRPD/<X> .......................................................................................... 38 5.93 <X>/UE_Location/3GPP2_Location/HRPD/<X>/Sector_ID ......................................................................... 38 5.93A <X>/UE_Location/3GPP2_Location/HRPD/<X>/Netmask ........................................................................... 39 5.94 <X>/UE_Location/WiMAX_Location ............................................................................................................ 39 5.95 <X>/UE_Location/WiMAX_Location/<X> ................................................................................................... 39 5.96 <X>/UE_Location/WiMAX_Location/<X>/NAP-ID ..................................................................................... 39 5.97 <X>/UE_Location/WiMAX_Location/<X>/BS-ID ........................................................................................ 40 5.98 <X>/UE_Location/WLAN_Location .............................................................................................................. 40 5.99 <X>/UE_Location/WLAN_Location/<X> ..................................................................................................... 40 5.99A <X>/UE_Location/WLAN_Location/<X>/HESSID ...................................................................................... 40 5.100 <X>/UE_Location/WLAN_Location/<X>/SSID ............................................................................................ 40 5.101 <X>/UE_Location/WLAN_Location/<X>/BSSID ......................................................................................... 41 5.102 <X>/UE_Location/Geo_Location/................................................................................................................... 41 5.102A Void .................................................................................................................................................................. 41 5.102B <X>/ UE_Location /Geo_Location/Latitude ................................................................................................... 41 5.102C <X>/ UE_Location /Geo_Location/Longitude ................................................................................................ 41 5.103 <X>/Ext ........................................................................................................................................................... 42 6 MO for WiMAX ..................................................................................................................................... 42 6.1 Introduction ...................................................................................................................................................... 42 6.2 WNDS MO ....................................................................................................................................................... 42 6.3 WNDS MO parameters .................................................................................................................................... 43 6.3.1 General ........................................................................................................................................................ 43 6.3.2 Node: <X> .................................................................................................................................................. 43 6.3.3 <X>/Name .................................................................................................................................................. 43 6.3.4 <X>/NetworkList ....................................................................................................................................... 43 6.3.5 <X>/NetworkList/<X> .............................................................................................................................. 44 6.3.6 <X>/NetworkList/<X>/FrequencyInfo ...................................................................................................... 44 6.3.7 <X>/NetworkList/<X>/FrequencyInfo/<X> ............................................................................................. 44 6.3.8 <X>/NetworkList/<X>/FrequencyInfo/<X>FirstFreq ............................................................................... 44 6.3.9 <X>/NetworkList/<X>/FrequencyInfo/<X>LastFreq ............................................................................... 44 6.3.10 <X>/NetworkList/<X>/FrequencyInfo/<X>NextFreqStep ....................................................................... 45 6.3.11 <X>/NetworkList/<X>/ FrequencyInfo/<X>ChannelBandwidth .............................................................. 45 6.3.12 <X>/NetworkList/<X>/ FrequencyInfo/<X>DuplexMode ....................................................................... 45 6.3.13 <X>/NetworkList/<X>/ FrequencyInfo/<X>FFT_Size ............................................................................. 45 6.3.14 <X>/NetworkList/<X>/ FrequencyInfo/<X>Preambles ............................................................................ 46 6.3.15 <X>/ NetworkList /<X>/NAP-ID .............................................................................................................. 46 6.3.16 <X>/NetworkList/<X>/CellType .............................................................................................................. 46 6.3.17 <X>/NetworkList/<X>/OperatorDifferentiatedTextField ......................................................................... 46 6.3.18 <X>/Ext ...................................................................................................................................................... 47 Annex A (informative): ANDSF MO DDF ........................................................................................... 48 Annex B (informative): WNDS MO DDF ............................................................................................ 80 Annex C (informative): Change history ............................................................................................... 85 History .............................................................................................................................................................. 86 ETSI 3GPP TS 24.312 version 8.4.0 Release 8 6 ETSI TS 124 312 V8.4.0 (2010-01) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI 3GPP TS 24.312 version 8.4.0 Release 8 7 ETSI TS 124 312 V8.4.0 (2010-01) 1 Scope The present document defines management objects that can be used by the Access Network Discovery and Selection Function (ANDSF) and the UE. The Management Object (MO) is compatible with the OMA Device Management (DM) protocol specifications, version 1.2 and upwards, and is defined using the OMA DM Device Description Framework (DDF) as described in the Enabler Release Definition OMA-ERELD-DM-V1_2 [5]. The MO consists of relevant parameters for intersystem mobility policy- and access network discovery information that can be managed by the ANDSF. The service requirements and the functional requirements for the access network discovery and selection are described in 3GPP TS 22.278 [2] and in 3GPP TS 23.402 [4] respectively. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. [1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications". [2] 3GPP TS 22.278: "Service requirements for the Evolved Packet System (EPS)". [3] 3GPP TS 23.003: "Numbering, addressing and identification". [3A] 3GPP TS 23.032: "Universal Geographical Area Description (GAD)". [3AA] 3GPP TS 24.302: "Access to the 3GPP Evolved Packet Core (EPC) via non-3GPP access networks". [3B] 3GPP TS 25.331: "Radio Resource Control (RRC); Protocol Specification". [3C] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource Control (RRC); Protocol specification". [4] 3GPP TS 23.402: "Architecture enhancements for non-3GPP accesses". [4A] OMA-DDS-DM_ConnMO-V1_0- 20081107-A: "Standardized Connectivity Management Objects", Approved Version 1.0 – 07 Nov 2008. [4B] OMA-DDS-DM_ConnMO_WLAN-V1_0-20081024-A: 'Standardized Connectivity Management Objects WLAN Parameters', Approved Version 1.0 – 24 Oct 2008. [5] OMA-ERELD-DM-V1_2: "Enabler Release Definition for OMA Device Management". [6] WiMAX Forum Network Architecture Release 1.0 version 1.2.2 – Stage 2: "Architecture Tenets, Reference Model and Reference Points", May 2008. [7] WiMAX Forum Network Architecture Release 1.0 version 1.2.2 – Stage 3: "Detailed Protocols and Procedures", May 2008. ETSI 3GPP TS 24.312 version 8.4.0 Release 8 8 ETSI TS 124 312 V8.4.0 (2010-01) [8] WiMAX Forum Mobile System Profile Release 1.0 Approved Specification Revision 1.4.0, April 2007. [9] IEEE Std 802.11™-2007: "Information Technology- Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications". [10] IEEE Std 802.16e-2005 and IEEE Std 802.16-2004/Cor1-2005: "IEEE Standard for Local and Metropolitan Area Networks, Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendments 2 and Corrigendum 1", February 2006. [11] IETF RFC 3629 (November 2003): "UTF-8, a transformation format of ISO 10646". [12] "Unicode 5.1.0, Unicode Standard Annex #15; Unicode Normalization Forms", March 2008. http://www.unicode.org [13] 3GPP2 C.S0005: "Upper Layer (Layer 3) Signaling Standard for cdma2000 Spread Spectrum Systems". [14] 3GPP2 C.S0016: "Over-the-Air Service Provisioning of Mobile Stations in Spread Spectrum Standards". [15] 3GPP2 C.S0024-0: "cdma2000 High Rate Packet Data Air Interface Specification". [16] ISO 8601:2004: "Data elements and interchange formats -- Information interchange -- Representation of dates and times" [17] IEEE 802.11u: "Draft Amendment to Standard for Information Technology - Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Amendment 7: Interworking with External Networks" 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] apply. 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: ANDSF Access Network Discovery and Selection Function DDF Device Description Framework DM Device Management MO Management Object OMA Open Mobile Alliance RSSI Receive Signal Strength Indicator UE User Equipment WNDS WiMAX Network Discovery and Selection 4 ANDSF MO The ANDSF MO is used to manage intersystem mobility policy- as well as access network discovery information stored in a UE supporting provisioning of such information from an ANDSF. The ANDSF may initiate the provision of information from the ANDSF to the UE as specified in 3GPP TS 24.302 [3AA]. ETSI 3GPP TS 24.312 version 8.4.0 Release 8 9 ETSI TS 124 312 V8.4.0 (2010-01) The UE may initiate the provision of information from the ANDSF, using a client initiated session alert message of code "Generic Alert". The "Type" element of the OMA DM generic alert message shall be set to "urn:oma:at:ext-3gpp- andsf:1.0:provision". The intersystem mobility policy information consists of a set of one or more intersystem mobility policy rules. At any point in time there shall be at most one rule applied, that rule is referred to as the 'active' rule. There may hence be zero or one 'active' rule. The rules have a number of conditions (e.g. current access technology and location) where one or more may be present and set to a value. The rules also have a number of results (e.g. preferred access technology and restricted access technology) to be used whenever a rule is 'active'. If there are no results for the 'active' rule, it is implementation dependent how UE performs network selection. Irrespective of whether any rule is 'active' or not, the UE shall periodically re-evaluate ANDSF policies. When ANDSF policy selection rules identify an available network, the highest priority rule becomes 'active' rule and network re-selection is performed. While the rule remains 'active', UE shall keep considering higher priority networks, than currently selected, in the prioritized network list of the rule. In addition to conditions and results there is a rule-priority that shall be set for each rule in order for the UE to determine which rule, out of potentially several valid rules, it should consider as 'active'. The trigger for (re-)evaluating rules is that the 'active' rule becomes invalid (conditions no longer fulfilled), or some other manufacturer specific trigger. The relation between Policy and DiscoveryInformation is that Policies prioritize the access network, while DiscoveryInformation provide further information for the UE to access the access network defined in the policy. The validity of the policy takes into account ValidityArea, Roaming and TimeOfDay, which must all match in order to make the Policy valid. The MO has a node indicating the position of the UE. The trigger for updating the value of this node is that the location information it contains is no longer valid (i.e. the UE has changed its position) or some other manufacturer specific trigger. The update of the information contained in this node doesn"t necessarily imply any interaction with the ANDSF server. The MO defines validity areas, position of the UE and availability of access networks in terms of geographical coordinates. The way such coordinates are retrieved is implementation dependant (e.g. GPS receiver). The UE is not required to switch on all UE's supported radios for deducing its location for ANDSF purposes or for evaluating the validity area condition of a policy or a discovery information. The Management Object Identifier is: urn:oma:mo:ext-3gpp-andsf:1.0. The OMA DM Access Control List (ACL) property mechanism as standardized (see Enabler Release Definition OMA- ERELD-DM-V1_2 [5]) may be used to grant or deny access rights to OMA DM servers in order to modify nodes and leaf objects of the ANDSF MO. The following nodes and leaf objects are possible under the ANDSF node as described in figure 4.1: ETSI