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1 Scope
The present document specifies the stage 2 description of the SoLSA service, which gives the network operator the basis to offer subscribers or group of subscribers different services, different tariffs and different access rights depending on the geographical location of the subscriber, according to GSM 02.43.
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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. • Fo...
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2.1 Normative references
[1] GSM 02.43: "Digital cellular telecommunications system (Phase 2+); Support of Localised Service Area (SoLSA), Stage 1". [2] GSM 03.03: " Digital cellular telecommunications system (Phase 2+); Numbering, Addressing and Identification". [3] GSM 03.22: "Digital cellular telecommunications system (Phase 2+); Functions ...
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2.2 Informative references
[13] GSM 10.43: "Digital cellular telecommunications system; SoLSA, Work item status".
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3 Definitions and abbreviations
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3.1 Definitions
For the purposes of the present document, the following terms and definitions apply: Allowed localised service area: A Localised Service Area where the subscriber has allowed service. Current localised service area: The Localised Service Area of the serving cell to which the mobile station has subscription. In the case...
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3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply: LSA Localised Service Area LSA ID Localised Service Area Identity CSE Camel Service Environment
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4 Main concepts
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4.1 Localised Service Area definition
The network operator can define a Localised Service Area, LSA, consisting of a cell or a number of cells. It is possible for the network operator to set certain characteristics/attributes per LSA. Some LSA related attributes may be managed as part of cell management, e.g. exclusive access. The LSA is identified by a LS...
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4.2 Subscriber information for Localised Service Area
For a subscriber, the network operator or the service provider can define one or more LSA(s) as allowed LSA(s). It shall be possible to establish an order of priority between the allowed LSAs for a given subscriber and if the subscriber shall have preferential access within these LSAs. It shall also be possible to defi...
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4.3 Localised Service Area support in idle mode
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4.3.1 Cell selection and reselection
A cell reselection mechanism as defined in subclause 11.4.2 shall be used so that when camping on a cell in idle mode, the subscriber's mobile station favours the cells belonging to her LSA(s). The mobile station shall always attempt to reselect a cell in a higher priority LSA. Cells outside the allowed LSA(s) shall ha...
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4.3.2 Localised service area indication
The service subscriber can define a name (alphanumeric name, icon, etc) for each of her allowed LSAs. The MS will, in idle mode and if required by the user, indicate to the user the current LSA. The indication may be the name of the current LSA, as set by the user. The form of display and indication are left to manufac...
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4.3.3 Exclusive access
An exclusive access cell is a cell belonging to one or more LSAs and with allowed access only for users having this exclusive access cell included in his/her allowed LSAs. Other user's mobile stations must be prevented from using the cell to obtain any service, other than TS12 (Emergency Calls).
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4.3.4 LSA only access
It shall be BSS-controlled functionality to prevent terminated and/or originated calls outside the subscriber's allowed LSA(s). Emergency calls are however always allowed.
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4.4 Localised Service Area support in active mode
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4.4.1 Localised service area indication
As a network option, service subscribers may be notified at change of current LSA. This notification shall be performed as described in subclause 11.7. The form of display and indication are left to manufacturer's choice.
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4.4.2 Resource handling
As a network operator option it shall be possible to allow or prohibit connection set-up and handover depending on the subscriber's LSA information. Information to be made available to the radio resource allocation function and the handover function are as depicted in subclause 8.2.2. ETSI ETSI TS 101 416 V7.2.0 (2000-...
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4.5 Localised Service Area support in access control
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4.5.1 Emergency Call setup
The Emergency Call setup shall always be accepted by the MSC.
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4.5.2 Mobile Originating and Mobile Terminating Call setup
The MSC receives the LSA ID(s) of the current cell from the BSC before the call setup. The current LSA can be selected on the basis of the allowed LSA(s) in the subscriber data. Depending on the current LSA, the network may continue as follows: • The MSC accepts the setup without Active mode support, if the active mode...
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4.5.3 (void)
4.5.4 Call unrelated services (Short message transfer, USSD, Supplementary Service management) The MSC receives the LSA ID(s) of the current cell from the BSC in the COMPLETE_L3_INFO. The current LSA can be selected on the basis of the allowed LSA(s) in the subscriber data and it can be used e.g. for the charging purpo...
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4.5.5 (void)
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5 General architecture
No specific requirements are identified. The general architecture of GSM is maintained. ETSI ETSI TS 101 416 V7.2.0 (2000-01) 10 (GSM 03.73 version 7.2.0 Release 1998) Active mode support - Handover support (CS) - Network controlled cell reselection support (PS) MAP Subscriber’s LSA Data (relevant in the VPLMN) Create ...
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6 Compatibility issues
LSA can not be used with standard phase 1 or phase 2 mobile stations (or with non-compatible phase 2+ mobile stations) with all service aspects. A dedicated mobile station with LSA capability is required. A compatible mobile station shall provide the following specific functions: cell reselection in case of a LSA subsc...
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6.1 Handling of mobiles in exclusive access cells
The network shall broadcast information that the cell is used for exclusive access. This information is understood only by SoLSA compatible mobile stations. In order to prevent not allowed mobile stations to camp on exclusive access cells, the network may broadcast the escape PLMN code. The real PLMN code is still broa...
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6.2 LSA support in network
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6.2.1 VLR not supporting LSA
HLR shall reject roaming of a LSA only access subscriber to a VLR, which does not support LSA. A VLR supporting LSA shall indicate at location updating to the HLR that it supports LSA according to GSM 09.02.
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6.2.2 SGSN not supporting LSA
HLR shall reject roaming of a LSA only access subscriber to an SGSN, which does not support LSA. A SGSN supporting LSA shall indicate at location updating to the HLR that it supports LSA according to GSM 09.02.
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6.2.3 BSS not supporting LSA
This chapter handles networks where in the MSC/VLR service area only parts of the BSSs are supporting LSA. This configuration shall be seen as a network option. MSC/VLR shall reject MS originating/terminating call set-up for LSA only access subscribers when serving BSS does not support LSA.
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7 Transmission
No specific requirements are identified.
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8 Information storage
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8.1 Information managed per subscriber
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8.1.1 Stored in the HLR
The following mandatory information shall be stored in the HLR for each service subscriber: - a list of all the LSA Ids for the service subscriber; - the priority for each LSA; - the preferential access indicator for each LSA; - the LSA only access indicator. The following optional information may be stored in the HLR ...
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8.1.2 Stored in the VLR
The following mandatory information, which is relevant in the VPLMN, shall be stored in the VLR for each service subscriber: a list of all the LSA Ids for the service subscriber; the priority for each LSA; the preferential access indicator for each LSA; the LSA only access indicator. The following optional information ...
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8.1.3 Stored in the SIM
The following mandatory information shall be stored in the SIM for each service subscriber: a list of all the LSA Ids for the service subscriber; the priority for each LSA; the LSA only access indicator. The following optional information may be stored in the SIM for each service subscriber: LSA only access indication ...
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8.1.4 Stored in the SGSN
The following mandatory information, which is relevant in the VPLMN, shall be stored in the SGSN for each service subscriber: a list of all the LSA Ids for the service subscriber; the priority for each LSA; the preferential access indicator for each LSA; the LSA only access indicator. The following optional information...
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8.2 Information managed per LSA
The LSA is defined as a list of cells inside the network. The cells shall be defined by their cell identification consisting of the Location Area Code and the Cell Identity as defined in GSM 08.08 and are therefore uniquely identified in the network.
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8.2.1 Stored in the MSC
The information stored in the MSC (network option) is the network specific service configuration of each LSA defined by the network operator and relevant for the MSC. The network specific configuration of each LSA may also include specific rules for e.g. the priority handling and the mapping between LSA information for...
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8.2.2 Stored in the BSS
The information stored in the BSS is the network specific service configuration of each LSA defined by the network operator and relevant for the BSS. For each LSA relevant for the BSS in case of internal and external handover support, the LSA ID and the cells belonging to the LSA shall be stored. The BSS must also have...
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9 Identities
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9.1 Identities for LSA
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9.1.1 LSA ID
The LSA ID shall either be a PLMN significant number or a universal identity, indicated by one bit in the LSA ID. PLMN significant number: The LSA ID shall be a binary number uniquely assigned to an area in one network. The identity consists of 3 octets. Universal identity: The LSA ID shall be a globally unique identit...
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9.1.2 LSA name
It shall be possible to assign a subscriber-defined identifier to each LSA. The LSA name can e.g. be an icon or an alphanumeric text up to 10 characters.
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10 Operation and maintenance aspects
The operators have the possibility to: - Define LSAs consisting of a cell or a number of cells. - Set parameters for prioritised LSA cell reselection. - Set the parameter for exclusive access.
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11 Function and information flows
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11.1 LSA management
The LSA attributes, as given in subclause 8.2 shall be entered and modified by the network operator or the service provider.
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11.2 Subscription management
When the subscriber record is created in the HLR, the list of allowed LSAs, priority of each LSA, the preferential access indicator of each LSA and information about access rights outside these LSAs shall be included. The network operator can change the LSA information for a subscription at any time. A change of subscr...
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11.3 Update of LSA data in SIM
SIM Application Toolkit (SAT) SIM Data Download procedure, as specified in GSM 11.14, can be used to download LSA data to SIM over the air interface. SAT class 1 supports SMS as the bearer for LSA data. ETSI ETSI TS 101 416 V7.2.0 (2000-01) 15 (GSM 03.73 version 7.2.0 Release 1998) When using over the air interface for...
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11.4 Functions related to MS in idle mode for support of LSA
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11.4.1 Broadcast information
In cells belonging to a LSA, the LSA ID(s) and/or cell identity is broadcast. Further, in cells belonging to a LSA, which shall give exclusive access to a subscriber group, an exclusive access indication and/or the escape PLMN are broadcast. If the escape PLMN is broadcast then also the real PLMN code and a permission ...
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11.4.2 Cell selection and reselection.
The definition of a "suitable cell", as defined in GSM 03.22, is modified with the following criterion: A SoLSA exclusive access cell is "suitable" only if the LSA of the cell is one of the allowed LSA according to the SIM. Emergency calls are always allowed if no cells are found suitable. An MS with SIM indicating LSA...
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11.4.3 Location Updating
If the escape PLMN is broadcast the BSS shall, at location updating, inform the MSC/VLR about the LSA ID(s) of the cell where the location updating request message was received and indicate that escape PLMN is broadcast. This is done by adding the LSA ID(s) of current cell to the complete layer 3 information message fo...
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11.4.4 Routing Area Update
If the escape PLMN is broadcast the BSS shall, at routing area update, inform the SGSN about the LSA ID(s) of the cell where the routing area update request message was received and indicate that escape PLMN is broadcast. This is done by adding the LSA ID(s) of current cell to the UL UNITDATA message for the exclusive ...
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11.5 Transfer of information from HLR to VLR
If the subscription contain LSA information then, when the subscriber registers on a VLR, the HLR shall send the LSA subscription data to that VLR, which is relevant in the VPLMN. This is done by adding the LSA information to the MAP_INSERT_SUBSCRIBER_DATA and for deletion in MAP_DELETE_SUBSCRIBER_DATA. When there is a...
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11.6 Transfer of information from HLR to SGSN
If the subscription contain LSA information then, when the subscriber registers on a SGSN, the HLR shall send the LSA subscription data to that SGSN, which is relevant in the VPLMN. This is done by adding the LSA information to the MAP_INSERT_SUBSCRIBER_DATA and for deletion in MAP_DELETE_SUBSCRIBER_DATA. When there is...
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11.7 Functions related to active mode
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11.7.1 MS connection establishment
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11.7.1.1 Indication of list of LSAs to the MSC
At initial connection establishment the BSS shall inform the MSC about the LSA ID(s) of the cell where the initial layer 3 message was received. This is done by adding the LSA ID(s) of current cell to the complete layer 3 message.
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11.7.1.2 Indication of allowed LSA to the BSS
The MSC sends the LSA information message to the BSS including the A-interface LSA information of the connection as defined in GSM 08.08. The LSA information sent to the BSS indicates the allowed LSA for the MS connection, their priorities, indication of preferential access per LSA, indication of active mode support pe...
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11.7.1.3 Indication of allowed LSA to the BSS
The SGSN may send the LSA information message to the BSS for a mobile station in ready mode as defined in GSM 08.18. The LSA information sent to the BSS indicates the allowed LSA for the MS connection. The BSS shall store the LSA information in order to use it on later actions, e.g. when determine specific cell selecti...
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11.7.1.4 Indication of current LSA to the MSC
The BSS shall inform the MSC about the current LSA at successful assignment. In order to derive the current LSA, the BSS has to have received allowed LSAs before assignment (see subclause 11.7.1.2). If the MSC does not receive current LSA from the BSS at successful assignment, the MSC shall interpret that there is no c...
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11.7.2 Handover
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11.7.2.1 Indication of allowed LSA to the target BSS
In case of BSS external handover, the MSC shall send the LSA information to the target BSS when requesting handover resource allocation. This information includes the allowed LSAs, their priorities, indication of preferential access per LSA, indication of active mode support per LSA and indication, whether or not, subs...
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11.7.2.2 Indication of current LSA to the MSC
In case of BSS external handover, the target BSS informs the MSC about the LSA ID of the potential new current LSA. This is done by adding the LSA ID of the current/new LSA to the handover request acknowledge message. In case of BSS internal handover, the BSS shall keep the MSC informed of the current LSA. This is done...
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11.7.2.3 Indication of current LSA to the SGSN
In case of cell change, the BSS may inform the SGSN about the LSA ID(s) of current cell. This is done by adding the LSA ID(s) of the current/new cell to the UL UNITDATA message.
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11.7.3 LSA active mode support
According to the LSA information received from the MSC (see subclause 11.7.1.2) or from the SGSN (see subclause 11.7.1.3), the BSS shall favour cells belonging to LSAs which have active mode support compared to other cells at resource allocation, network controlled cell reselection and handovers.
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11.7.4 LSA only access
If the subscriber is allowed to initiate/receive calls only in the allowed LSAs the BSS shall, if no current LSA can be selected, reject the assignment. Serving BSS shall not try to perform handover to cells that are outside of the allowed LSAs, if the subscriber only is allowed to access his allowed LSAs. Emergency ca...
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11.7.5 Exclusive Access
BSS shall try to allocate resources in exclusive access cells only if they are allowed for the subscriber. In the case no resources can be allocated in an allowed cell, the BSS shall reject the assignment request. Serving BSS shall not try to perform handover to exclusive access cells if they are not allowed for the su...
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11.7.6 Preferential Access
BSS shall favour subscribers who have preferential access to the LSA at resource allocation and in handovers compared to other subscribers.
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11.8 LSA indication procedures
Different indication procedures shall be applied in relation to the mode of the mobile station as presented in clause 4 and defined in the following sections.
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11.8.1 Indication for mobile stations in idle mode
In addition to indicate the registered PLMN, an MS with subscription for a LSA in the registered PLMN shall indicate this LSA when it is available. The indication towards the user is optional and may be done by displaying the stored LSA name that corresponds to the ID of the current LSA. An MS with LSA only access subs...
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11.8.2 Indications for mobile stations in active mode
The network decides when to send a notification to the MS about a change of current LSA. The information will be sent from the MSC to the MS and will contain the LSA ID. This is done by adding the LSA ID of the current cell to the MM Information message. If no LSA ID is included in the MM Information message the MS sha...
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11.9 Overview of signalling
In this overview, the messages required to implement the specified concept are identified and brief details are given of each message. These signalling flows are not normative, but provided as an illustration on possible signalling interworking (note that only those parts of the procedures that are relevant for the LSA...
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12 Charging
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12.1 General principles
Using LSA as a location based charging can be realised. Different charging can be applied with respect to different LSAs, which shall also include the possibility to change charging when moving between LSAs with different tariffs associated. LSAs with higher priority may be associated with different tariffs.
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12.2 Toll ticketing
Appropriate information concerning the change of charging due to the LSA change shall also be included in the charging record (toll ticket). ETSI ETSI TS 101 416 V7.2.0 (2000-01) 24 (GSM 03.73 version 7.2.0 Release 1998) Annex A (informative): SoLSA interworking with CAMEL This Annex is informative. Regarding the SoLSA...
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1 Scope
The present document, specifies a mechanism, which can be used as a platform for providing special tariffs and/or special set of service features for certain subscribers within a regionally restricted area or areas. The motivation for this concept is to create means for network operators to build new service and tariff...
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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. • Fo...
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2.1 Normative references
[1] GSM 02.06: "Digital cellular telecommunications system (Phase 2+); Types of Mobile Stations (MS)". [2] GSM 02.07: "Digital cellular telecommunications system (Phase 2+); Mobile Stations (MS) features". [3] GSM 02.11: "Digital cellular telecommunications system (Phase 2+); Service accessibility ".
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2.2 Informative references
[4] GSM 10.43: "Digital cellular telecommunications system (Phase 2+); SoLSA, Work item status". [5] GSM 01.04: "Digital cellular telecommunications system (Phase 2+); Abbreviations and acronyms". ETSI ETSI TS 101 415 V7.3.0 (2000-07) 6 (GSM 02.43 version 7.3.0 Release 1998)
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3 Definitions and abbreviations
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3.1 Definitions
For the purposes of the present document, the following terms and definitions apply. Localised Service Area (LSA): A localised service area consists of a cell or a number of cells within a PLMN. Cells being part of different localised service areas may have overlapping coverage areas. The cells constituting a localised...
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3.2 Void
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3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply: LSA Localised Service Area ETSI ETSI TS 101 415 V7.3.0 (2000-07) 8 (GSM 02.43 version 7.3.0 Release 1998) Further GSM related abbreviations may be found in GSM 01.04.
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4 Description
The localised service area concept shall give the operator the basis to offer subscribers different services (e.g. tariffs or access rights) depending on the location of the subscriber.
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4.1 Defining subscriber information for localised service area
A subscriber can have up to 20 LSAs per PLMN. It shall be possible to assign localised service areas to subscribers. Subscriber may have service, which contains several LSAs potentially belonging to different PLMNs. There shall be means to allocate LSA priority to each subscriber independently by operator. Localised se...
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4.2 Service Features
Following service features are building blocks for SoLSA based services. It is up to the operator to decide which service features are required for a specific service. - Localised service area indication. - Localised service area support in idle mode (camping). - Localised service area support in active mode (handover)...
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4.2.1 Localised service area indication
It shall be possible to assign a subscriber defined identifier by the operator to each LSA (alphanumeric text up to 10 characters), which can be provided to the user in idle and active mode. As a MS manufacturer option the user may assign an icon or another form of indication to each LSA. It shall be possible to indica...
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4.2.2 Localised service area support in idle mode (camping)
The PLMN shall determine, which cells, belonging to the LSA, are to be favoured by the MS when camping. When camping on a cell in idle mode, the subscriber's mobile station shall use the information provided by the PLMN in selecting cells belonging to his localised service area. The mobile station shall have the abilit...
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4.2.3 Localised service area support in active mode (handover)
The PLMN shall determine, which cells, belonging to the LSA, are to be favoured during active mode. The cells belonging to users LSAs shall be favoured at call setup and when handovers are carried out. This favouring shall not degrade the overall service quality.
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4.2.4 Exclusive access
For a cell belonging to one or more service areas and where only one or more specific subscribers shall have allowed access, other subscriber’s mobile stations shall be prevented from using the cell to obtain any service, other than TS12 (Emergency Calls). NOTE: This does not prevent other subscriber's mobile stations ...
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4.2.5 LSA only access
With access allowed only within one or more localised service areas, it shall be possible to prevent receiving and/or originating basic services from non-LSA cells. SMS and Supplementary service operations are allowed in all areas. It shall be possible to prevent handovers to cells not belonging to allowed localised se...
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4.2.6 Preferential access
It shall be possible to allocate resources at call setup and during the active mode to LSA users, if required by a SoLSA application. NOTE: An example of a requirement: the last traffic channel is not allocated to non-LSA user or in case of congestion an ongoing call of a non-LSA user is released and replaced with a ca...
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5 Impact on other services
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5.1 General
SoLSA is not limited to specific services and there are no modifications necessary for existing services. In particular there shall be no impact to Emergency Call (TS12). LSA should be able to support all tele, bearer and supplementary services .There is no interaction to supplementary services except those specified b...
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5.2 Void
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5.3 GPRS
It shall be possible to apply SoLSA services independently to circuit switched services and to GPRS. LSA support in idle mode shall be specified for GPRS. The definition of routing areas and the definition of localised service areas shall be independent of each other.
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5.4 Call Forwarding
No interaction. NOTE: Operators should consider using tools such as ODB and CAMEL to control call forwarding functionality provided in conjunction with any SoLSA services.
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5.5 Completion of Calls to Busy Subscriber (CCBS)
LSA only access restrictions shall apply to CCBS recall.