1、m 3404583 0077969 I153 m Released: July 1, 1993 GSM 02.11 Version: 4.5.1 Date: 7 June, 1993 Work Item No: Key words: European digital cellular telecommunication system (phase 2); SERVICE ACCESSIBILITY ETSI European Telecommunications Standards Institute ETSI Secretariat: Route des Lucioles, F-O6921
2、Sophia Antipolis Cedex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx. 47 O0 40 F This is an unpublished work the copyright in which vests in the European Teleccmmunications Standards Institute. All rights reserved. The information contained herein is the property of ETSI and no part may be r
3、eproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be embodied. 3404583 0077970 975 W O . 1 . 2 . 3 . Page 3 GSM 02.11 . version 4.5.1 : June 1993 CONTENT
4、S SCOPE . 5 DEFINITIONS 5 1 . 1. GSM PLMN 5 1.2. GSM PLMN Area (GPA) 5 1.3. GSM System Area (GSA) 5 1.4. GSM Service Area . 6 1.5. Regionally Provided Service . 6 ROAMING . 6 2.1. General Requirements 6 2.2. International Roaming 6 2.3. National Roaming . 6 PROVISIONS FOR PROVIDING CONTINUITY OF SER
5、VICE 6 3.1. Location Registration 6 3.2. Network Selection . 7 3.2.1. General 7 3.2.2. Procedures 7 3.2.2.1. General 7 3.2.2.2. At switch-on or recovery from lack of coverage . 7 3.2.2.3. User Reselection . 8 3.2.2.4. “Forbidden PLMN“ List . 9 3.2.2.5. National Roaming 9 3.2.2.5.1. Location Update R
6、eject 9 3.2.2.5.2. Timer for return to HPLMN 9 3.2.2.6. Regionaliy Provided Service . 9 4 . ACCESS CONTROL . 10 4.1. Purpose . 10 4.2. Allocation 10 4.3. Operation 10 4.4. Emergency Calls . 10 Previous page is blank 3404583 0077973 801 Page 5 GSM 02.11 - version 4.5.1 : June 1993 O. SCOPE The techni
7、cal realization of service accessibility in terms of registration, handover, roaming and system selection is defined in the 03 series of GSM Specifications. The purpose of this Specification is to describe the service access procedures as presented to the user. Definitions and procedures are provide
8、d in this specification for international roaming, national roaming and regionaliy provided service. These are mandatory in relation to the technical realisation of the Mobile Station. 1. DEFINITIONS 1.1. GSM PLMN A Public Land Mobile Network (PLMN) is a network established and operated by an Admini
9、stration or RPOA for the specific purpose of providing land mobile communication services to the public. It provides communication possibilities for mobile users. For communications between mobile and fixed users, interworking with a fixed network is necessary. A GSM PLMN is a PLMN which is in accor
10、dance with the GSM Specifications. As a rule. a GSM PLMN is limited by the borders of a country. Depending on national regulations there may be more than one GSM PLMN per country. A relationship exists between each subscriber and his home GSM PLMN (HPLMN). If communications are handled over another
11、GSM PLMN, this PLMN is referred to as the visited GSM PLMN (VPLMN). 1.2. GSM PLMN Area (GPA) The GSM PLMN Area (GPA) is the geographical area in which a GSM PLMN provides communication services according to the GSM specifications to mobile users. In the GPA, the mobile user can set up calls to a use
12、r of a terminating network. The terminating network may be a fixed network, the same GSM PLMN, another GSM PLMN or other types of PLMN. Terminating network users can also set up calls to the GSM PLMN. The GPA is allocated to a GSM PLMN. It is determined by the service and network provider in accorda
13、ma with any provisions laid down under national law. In general the GPA is restricted to one country. It can also be determined differentiy, depending on the different telecommunication senrices, or type of Mobile Station. If there are several GSM PLMNs in one country, their GPAs may overlap. In bor
14、der areas, the GPAs of GSM PLMNs of different countries may overlap. Administrations will have to take precautions to ensure that cross border coverage is minimised in adjacent countries unless otherwise agreed. Note: CCIlT Recommendation Q.1001 does not contain a definition of the PLMN area. 1.3. G
15、SM System Area (GSA) The GSM System Area is defined as the group of GSM PLMN areas accessible by GSM mobile stations. Interworking of several GSM PLMNs and interworking between GSM PLMNs and fixed network(s) permit GSM public land mobile communication services at international level. Previous page i
16、s blank = 3404583 0077772 748 m Page 6 GSM 02.11 -version 4.5.1 : June 1993 Note: The System Area according to CCIlT Recommendation Q.lOO1 corresponds to the GSM System Area. 1.4. GSM Service Area The GSM Service Area is defined in the same way as the Service Area according to CCTTT Recommendation Q
17、.lOO1. In contrast to the GPA it is not based on the coverage of a PLMN. Instead it is based on the area in which a fixed network user can call a mobile user without knowing his location. The Service Area can therefore change when the signalling system is being extended, for example. 1.5. Regionally
18、 Provided Service Regionaliy Provided Service is defined as a service entitlement to only geographical part) of a PLMN, controlled by the network operator. 2. ROAMING 2.1. General Requirements A MS with a valid IMSI may roam and access service in the area authorized by the entitlement of the subscri
19、ption. If a communication has been established, the MS will in principle not suffer an interruption within the GSM PLMN area (provided the entitlement of the subscription allows it). Exceptions are possible if no network resources or radio coverage are available locally. However, if the MS leaves th
20、e GSM PLMN area, an established communication may terminate. If the user then wants to continue. another network providing service has to be selected and a new communication has to be established (see section 3). 2.2. International Roaming International roaming is a service whereby an MS of a given
21、PLMN is able to obtain service from a PLMN of another country. The availability of International Roaming is subject to inter-PLMN agreements. 2.3. National Roaming National Roaming is a service whereby an MS of a given PLMN is able to obtain service from another PLMN of the same country, anywhere, o
22、r on a regional basis. The availability of National Roaming depends on the home PLMN of the requesting MS and the visited PLMN; it does not depend on subscription arrangements. 3. PROVISIONS FOR PROVIDING CONTINUITY OF SERVICE 3.1. Location Reglstratlon GSM PLMNs shall provide a location registratio
23、n function with the main purpose of providing continuity of service to mobile stations over the whole GSM system area. The location registration function shall be such as to allow: - Fixed subscribers to call a MS by only using the directory number of the MS irrespective of where the MS is located i
24、n the GSM system area at the time of the call. - Mobile stations to access the system irrespective of the location of the MS. m 3404583 0077973 684 Page 7 GSM 02.11 - version 4.5.1 : June 1993 - Mobile stations to identify when a change in location area has taken place in order to initiate automatic
25、 location updating procedures. The system architecture enabling implementation of the above requirements is defined in Specification GSM 03.02. The technical realisation of location registration is defined in Specification GSM 03.12. Specification GSM 03.12 also gives the conditions when a location
26、updating has to take place. 3.2. Network Selection 3.2.1. Gen eral The MS shall support both manual and automatic network selection mechanisms. The MS manufacturer may decide which should be the default mode at initial switch-on and whether subsequentiy the last mode used should become the default.
27、However, the user shall be given the opportunity to change mode at any time. Except as defined below, the MMI shall be at the discretion of the MS manufacturer. The MS shall contain display functions in accordance with GSM 02.07, by which Available PLMNs and the Selected PLMN can be indicated. 3.2.2
28、. Procedures 3.2.2.1. General In the following procedures the MS selects and attempts registration on PLMNs. In this specification, the term PLMN Selection defines an MS based procedure, whereby candidate PLMNs are chosen, one at a time, for attempted registration. If registration on a PLMN is succe
29、ssful, the MS shall indicate this PLMN (the registered PLMN) and be capable of making and receiving calls on it. The identity of the registered PLMN shall be stored on the SIM. However, if registration is unsuccessful, the MS shall ensure that there is no registered PLMN stored in the SIM. If a regi
30、stration is unsuccessful because the IMSI is unknown in the home network, or the MS is illegal, then the MS shall not allow any further registration attempts on any network, until the MS is next powered-up or a SIM is inserted. Registration attempts shall not be made by MSs without a SIM inserted. A
31、n MS/ME which has not successfully registered shall nevertheless be able to make emergency call attempts on an available PLMN, without the need for the user to select a PLMN. An available PLMN is determined by radio characteristics. (03.22/05.08 refers). 3.2.2.2. At switch-on or recovery from lack o
32、f coverage If the MS is registered on a PLMN (as indicated by the registered PLMN stored in the SIM), the MS shall perform a location update to a new location area if necessary. If there is no registered PLMN stored in the SIM, or if this PLMN is unavailable, or the attempted registration fails, the
33、 MS shall follow one of the following two procedures depending on its operating mode. A) Automatic network selection mode The MS shall select and attempt registration on other PLMNs, if available and allowable, in the 3404583 0077974 510 Page 8 GSM 02.11 - verslon 4.5.1 : June 1993 following order:
34、i) HPLMN; i) iii) each PLMN in the “PLMN Selector“ data field in the SIM (in priority order): all other PLMNs in random order. An allowable PLMN is one which is not in the “Forbidden PLMN“ data field in the SIM (see 3.2.2.4.). If successful registration is achieved, the MS shall indicate the selecte
35、d PLMN. If registration cannot be achieved on any PLMN, the MS shall indicate “no service“ to the user, wait until a new PLMN is detected, or new location areas of an allowed PLMN are found which are not in the forbidden LA list(s), and then repeat the procedure. When registration cannot be achieved
36、, different (discontinuous) PLMN search schemes may be used in order to minimise the access time while maintaining battery life, eg by prioritising the search in favour of BCCH carriers which have a high probability of belonging to an available and allowable PLMN. B) Manual network selection mode Th
37、e MS shall indicate whether there are any PLMNs, including “Forbidden PLMNs“, which are available. If there are none, this shall also be indicated, Any available PLMNs shall be presented in the following order: i) HPLMN; i) iii) Other PLMNs, in random order. PLMNs contained in the “PLMN Selector“ da
38、ta field in the SIM (in priority order); The user may select his desired PLMN and the MS shall attempt registration on this PLMN. (This may take place at any time during the presentation of PLMNs). If the registration cannot be achieved on the selected PLMN, 3 MS shall indicate No Service. The user
39、may then select and attempt to register on another ,- the same PLMN following the above procedure. If a PLMN is selected but the MS cannot register on- it because registration is rejected with the cause “PLMN not allowed“, the MSshall not re-attempt to register on that network unless the same PLMN i
40、s selected again by the user. If a PLMN is selected but the MS cannot register on it for other reasons, the MS shall, upon detection of a new LA (not in a forbidden LA list) of the selected PLMN, attempt to register on the PLMN. If the MS is registered on a PLMN but loses coverage, different (discon
41、tinuous) carrier search schemes may be used to minimise the time to find a new valid BCCH carrier and maintain battery life, eg by prioritising the search in favour of BCCH carriers of the registered PLMN. 3.2.2.3. User Reselection At any time, the user may request the MS to initiate reselection and
42、 registration cnro 3,i alternative available PLMN, according to the following procedures, dependent upon the operd:lrq mode. A) Automatic Network Selection Mode The MS shall select the HPLMN. If the HPLMN is not available, the MS attempts selection of -2 PLMNs in the “PLMN Selector“ list (in priorit
43、y order). If none of these is available and aliowar o. D 3YOY583 0077975 Y57 = Page 9 GSM 02.11 - version 4.5.1 : June 1993 the MS selects any other available and allowable PLMNs at random. The PLMN which the MS had selected prior to the start of this reselection procedure shall not be reselected, u
44、nless no other PLMNs are available and allowable, in which case it shall be reselected at the end of the procedure. 6) Manual Network Selection Mode The procedure of 3.2.2.2 6) above is followed. 3.2.2.4. “Forbidden PLMN“ List If a registration on a VPLMN is rejected with the cause “PLMN not allowed
45、“, the PLMN shall be written to a list of “Forbidden PLMNs“ stored in a data field in the SIM. The structure of this data field is given in GSM 11.1 1. If a successful registration (whilst in manual mode) is achieved on a PLMN in the “Forbidden PLMN“ list, the PLMN shall be deleted from the list. Wh
46、en in automatic mode, the MS may indicate any PLMNs which will not be selected due to their presence in the “Forbidden PLMN“ list. 3.2.2.5. National Roaming 3.2.2.5.1. Location Update Reject If a location update request is rejected with the cause “National Roaming not allowed“, the MS shall initiate
47、 the network selection procedure as in 3.2.2.2A) or 6). 3.2.2.5.2. Timer for return to HPLMN If the MS in Automatic Mode has selected and registered on a VPLMN of its home country, it shall make periodic attempts to return to its HPLMN. The interval between attempts shall be stored in the SIM. Oniy
48、the service provider shall be able to set the timer value. The timer shall have a value between 6 minutes and 8 hours, with a step size of 6 minutes. One value shall be designated to indicate that no periodic attempts shall be made. In the absence of a permitted value in the SIM, or the SIM is phase
49、 1 and therefore does not contain tho datafield, then a default value of 30 minutes, shall be used by the MS. Note: Use of values less than 30 minutes may result in excessive ME battery drain. 3.2.2.6. Regionally Provided Service If a location update is rejected with the cause “Location Area not allowed“, the MS shall perform the following procedures dependent upon the operating mode. A) Automatic Network Selection Mode The MS shall attempt location updates on other available location areas (LAS), not on the “Forbidden LA List“ (05.08 refers), on the present PLMN, before
