Content for  TR 21.905  Word version:  17.0.0

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3.O  OWord‑p. 21

Occupied bandwidth:
The width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission.
Offline charging:
charging mechanism where charging information does not affect, in real time, the service rendered.
Offline Charging System:
the entity that collects and processes offline charging information prior to delivery to the Billing Domain.
Online Charging:
charging mechanism where charging information can affect, in real time, the service rendered and therefore a direct interaction of the charging mechanism with the bearer/session/service control is required.
Online Charging System:
the entity that performs real-time Credit-Control and includes transaction handling, rating, online correlation and management of subscriber accounts/balances.
One Stop Billing:
One bill for all charges incurred using the 3GPP System.
Open group:
A group that does not have a pre-defined set of members. Any user may participate in an open group.
Open Service Access:
Concept for introducing a vendor independent means for introduction of new services.
Operating band:
A frequency range in which E-UTRA operates (paired or unpaired), that is defined with a specific set of technical requirements. Operations System: This abbreviation indicates a generic management system, independent of its location level within the management hierarchy.
Optional UE Requirement:
Any other requirements than mandatory UE requirement, essential UE requirement (conditional), essential UE requirement (unconditional). It is totally up to individual manufacturer to decide whether it should be implemented or not (e.g. Network initiated MM connection establishment).
Originating network:
The network where the calling party is located.
Orthogonal Channel Noise Simulator:
a mechanism used to simulate the users or control signals on the other orthogonal channels of a downlink
OSA Interface:
Standardised Interface used by application/clients to access service capability features.
Output power (Pout):
The mean power of one carrier of the UE, delivered to a load with resistance equal to the nominal load impedance of the transmitter.

3.P  PWord‑p. 22

An information unit identified by a label at layer 3 of the OSI reference model (source: ITU-T I.113). A network protocol data unit (NPDU).
Packet data protocol (PDP):
Any protocol which transmits data as discrete units known as packets, e.g., IP, or X.25.
Packet transfer mode:
Also known as packet mode. A transfer mode in which the transmission and switching functions are achieved by packet oriented techniques, so as to dynamically share network transmission and switching resources between a multiplicity of connections (source: ITU-T I.113).
One or more bits appended to a message in order to cause the message to contain the required number of bits or bytes.
The act of seeking a User Equipment.
Paging DRX cycle:
The individual time interval between monitoring Paging Occasion for a specific UE
Paging Block Periodicity (PBP):
The period of the occurrence of Paging Blocks. (For FDD, PBP = 1).
Paging Message Receiving Occasion:
The frame where the UE receives actual paging message.
Paging occasion:
The frame where the UE monitors in FDD or the paging block, which consists of several frames, for TDD. For Paging Blocks, the value of Paging Occasion is equal to the first frame of the Paging Block.
Pass band:
The frequency range that the repeater operates in with operational configuration. This frequency range can correspond to one or several consecutive nominal channels. If they are not consecutive each subset of channels shall be considered as an individual pass band.
Peak bit rate:
A measure of throughput. The maximum bit rate offered to the user for a given time period (to be defined) for the transfer of a bursty signal (source: ITU-T I.210). (The maximum user information transfer rate achievable by a user for a single service data unit transfer.)
The ability to track service and resource usage levels and to provide feedback on the responsiveness and reliability of the network.
Personal Service Environment:
contains personalised information defining how subscribed services are provided and presented towards the user. Each subscriber of the Home Environment has her own Personal Service Environment. The Personal Service Environment is defined in terms of one or more User Profiles.
The process of storing information in the ME and activating the procedures which verify this information against the corresponding information stored in applications on the (U)SIM whenever the ME is powered up or when a UICC containing network access applications (SIM, USIM, etc.) is inserted, in order to limit the applications with which the ME will operate.
Personalisation entity:
Network, network subset, SP, Corporate or (U)SIM to which the ME is personalised
A dataset of personal or entity attributes. The simplest form is a set of name-subscriber phone number pairs as supported by GSM (U)SIMs.
Physical channel data stream:
In the uplink, a data stream that is transmitted on one physical channel. In the downlink, a data stream that is transmitted on one physical channel in each cell of the active set.
Physical Channel:
In FDD mode, a physical channel is defined by code, frequency and, in the uplink, relative phase (I/Q). In TDD mode, a physical channel is defined by code, frequency, and time-slot.
Pico cells:
"Pico cells" are cells, mainly indoor cells, with a radius typically less than 50 metres.
PICH Monitoring Occasion:
The time instance where the UE monitors PICH within Paging Occasion.
Pilot Identity:
A service specific public address used for initial contact, associated with a group of publicly addressable identities (e.g. E.164 numbers or SIP URI).
PLMN Area:
The PLMN area is the geographical area in which a PLMN provides communication services according to the specifications to mobile users. In the PLMN area, the mobile user can set up calls to a user of a terminating network. The terminating network may be a fixed network, the same PLMN, another PLMN or other types of PLMN. Terminating network users can also set up calls to the PLMN. The PLMN area is allocated to a PLMN. It is determined by the service and network provider in accordance with any provisions laid down under national law. In general the PLMN area is restricted to one country. It can also be determined differently, depending on the different telecommunication services, or type of MS. If there are several PLMNs in one country, their PLMN areas may overlap. In border areas, the PLMN areas 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.
PLMN Operator:
Public Land Mobile Network operator. The entity which offers telecommunications services over an air interface..
Plug-in SIM:
A physical form factor of SIM (see ID-000 SIM).
point-to-multipoint service:
A service type in which data is sent to "all service subscribers or a pre-defined subset of all subscribers" within an area defined by the Service Requester.
A value of the service attribute "communication configuration", which denotes that the communication involves only two network terminations.
Point-to-point service:
A service type in which data is sent from a single network termination to another network termination.
A particular interface, of the specified equipment (apparatus), with the electromagnetic environment. For example, any connection point on an equipment intended for connection of cables to or from that equipment is considered as a port.
Ported number:
A MSISDN that has undergone the porting process.
Ported subscriber:
The subscriber of a ported number.
Porting process:
A description of the transfer of a number between network operators.
Power control dynamic range:
The difference between the maximum and the minimum total transmit output power for a specified reference condition (TS 25.104).
Power Saving Mode:
A mode of operation similar to power-off, allowing a UE to greatly reduce its power consumption while remaining registered with the network, without the need to re-attach or to re-establish PDN connections.
Predictive service:
A service model which provides reliable performance, but allowing a specified variance in the measured performance criteria.
Prepay billing:
Billing arrangement between customer and operator/service provider where the customer deposits an amount of money in advance, which is subsequently used to pay for service usage.
Postpay billing:
Billing arrangement between customer and operator/service provider where the customer periodically receives a bill for service usage in the past period.
Proactive SIM:
A SIM, which is capable of issuing commands to the Terminal. Part of SIM Application Toolkit.
ProSe Communication:
A communication between two or more ProSe-enabled UEs in proximity by means of a ProSe Communication path. Unless explicitly stated otherwise, the term "ProSe Communication" refers to any/all of the following:
  • ProSe E-UTRA Communication between only two ProSe-enabled UEs; or
  • ProSe Group Communication or ProSe Broadcast Communication among Public Safety ProSe-enabled UEs; or
  • ProSe-assisted WLAN direct communication.
ProSe Discovery:
A process that identifies that a ProSe-enabled UE is in proximity of another, using E-UTRA (with or without E-UTRAN) or EPC.
ProSe-enabled UE:
a UE that fulfills ProSe requirements for ProSe Discovery and/or ProSe Communication. Unless explicitly stated otherwise, a ProSe-enabled UE refers to any ProSe-enabled UE (i.e. Public Safety or not).
A formal set of procedures that are adopted to ensure communication between two or more functions within the within the same layer of a hierarchy of functions (source: ITU-T I.112).
Protocol data unit:
In the reference model for OSI, a unit of data specified in an (N)-protocol layer and consisting of (N)-protocol control information and possibly (N)-user data (source: ITU-T X.200 / ISO-IEC 7498-1).
Public land mobile network:
A telecommunications network providing mobile cellular services.

3.Q  QWord‑p. 24

QoS profile:
a QoS profile comprises a number of QoS parameters. A QoS profile is associated with each QoS session. The QoS profile defines the performance expectations placed on the bearer network.
QoS session:
Lifetime of PDP context. The period between the opening and closing of a network connection whose characteristics are defined by a QoS profile. Multiple QoS sessions may exist, each with a different QoS profile.
Quality of Service:
The collective effect of service performances which determine the degree of satisfaction of a user of a service. It is characterised by the combined aspects of performance factors applicable to all services, such as;
  • service operability performance;
  • service accessibility performance;
  • service retainability performance;
  • service integrity performance; and
  • other factors specific to each service.

3.R  R

Radio access bearer:
The service that the access stratum provides to the non-access stratum for transfer of user data between User Equipment and CN.
Radio Access Mode:
Mode of the cell, FDD or TDD.
Radio Access Network Information Management:
Functionality supporting the exchange of information, via the Core Network, between peer application entities located in a GERAN or in a UTRAN access network.
RAN sharing:
Two or more CN operators share the same RAN, i.e. a RAN node (RNC or BSC) is connected to multiple CN nodes (SGSNs and MSC/VLRs) belonging to different CN operators.
Radio Access Network Application Part:
Radio Network Signalling over the Iu.
Radio Access Network Operator:
Operator that offers radio access to one or more core network operators.
Radio Access Technology:
Type of technology used for radio access, for instance E-UTRA, UTRA, GSM, CDMA2000 1xEV-DO (HRPD) or CDMA2000 1x (1xRTT).
Radio Bearer:
The service provided by the Layer 2 for transfer of user data between User Equipment and UTRAN.
Radio communications equipment:
Telecommunications equipment which includes one or more transmitters and/or receivers and/or parts thereof for use in a fixed, mobile or portable application. It can be operated with ancillary equipment but if so, is not dependent on it for basic functionality.
Radio digital unit:
Equipment which contains base band and functionality for controlling Radio unit.
Radio equipment:
Equipment which contains Radio digital unit and Radio unit.
Radio frame:
A radio frame is a numbered time interval of 10 ms duration used for data transmission on the radio physical channel. A radio frame is divided into 15 time slots of 0.666 ms duration. The unit of data that is mapped to a radio frame (10 ms time interval) may also be referred to as radio frame.
Radio interface:
The "radio interface" is the tetherless interface between User Equipment and a UTRAN access point. This term encompasses all the functionality required to maintain such interfaces.
Radio link:
A "radio link" is a logical association between single User Equipment and a single UTRAN access point. Its physical realisation comprises one or more radio bearer transmissions.
Radio link addition:
The procedure where a new radio link is added to the active set.
Radio Link Control:
A sublayer of radio interface layer 2 providing transparent, unacknowledged and acknowledged data transfer service.
Radio link removal:
The procedure where a radio link is removed from the active set.
Radio Link Set:
A set of one or more Radio Links that has a common generation of Transmit Power Control (TPC) commands in the DL
Radio Network Controller:
This equipment in the RNS is in charge of controlling the use and the integrity of the radio resources.
Radio Network Subsystem Application Part:
Radio Network Signalling over the Iur.
Radio Network Subsystem:
Either a full network or only the access part of a UTRAN offering the allocation and the release of specific radio resources to establish means of connection in between an UE and the UTRAN.
A Radio Network Subsystem is responsible for the resources and transmission/reception in a set of cells.
Radio Network Temporary Identifier:
A Radio Network Temporary Identifier is a generic term of an identifier for a UE when an RRC connection exists. Following types of RNTI are defined: Cell RNTI (C-RNTI), Serving RNC RNTI (S-RNTI), UTRAN RNTI (U-RNTI) and GERAN RNTI (G-RNTI).
Radio Resource Control:
A sublayer of radio interface Layer 3 existing in the control plane only which provides information transfer service to the non-access stratum. RRC is responsible for controlling the configuration of radio interface Layers 1 and 2.
Radio system:
the selected 2nd or 3rd generation radio access technology, eg UTRAN or GERAN.
Radio unit:
Equipment which contains transmitter and receiver.
Rated Output Power:
For FDD BS, rated output power is the mean power level per carrier that the manufacturer has decared to be available at the antenna connector. For TDD BS rated output power is the mean power level per carrier over an active timeslot that the manufacturer has declared to be available at the antenna connector.
RE power control dynamic range:
The difference between the power of a RE and the average RE power for a BS at maximum output power for a specified reference condition.
Real time:
Time, typically in number of seconds, to perform the on-line mechanism used for fraud control and cost control.
Received Signal Code Power:
Given only signal power is received, the average power of the received signal after despreading and combining.
Receiver Antenna Gain (dBi):
The maximum gain of the receiver antenna in the horizontal plane (specified as dB relative to an isotropic radiator).
Receiver exclusion band:
The receiver exclusion band is the band of frequencies over which no tests of radiated immunity of a receiver are made. The exclusion band for receivers is expressed relative to the base station receive band.
Receiver Noise Figure (dB):
Receiver noise figure is the noise figure of the receiving system referenced to the receiver input.
Receiver Sensitivity (dBm):
This is the signal level needed at the receiver input that just satisfies the required Eb/(No+Io).
Recipient network:
The network which receives the number in the porting process. This network becomes the subscription network when the porting process is complete.
A string of bytes within an EF handled as a single entity.
Record number:
The number, which identifies a record within an EF.
Record pointer:
The pointer, which addresses one record in an EF.
Reference bandwidth:
The bandwidth in which an emission level is specified.
Reference configuration:
A combination of functional groups and reference points that shows possible network arrangements (source: ITU-T I.112).
Reference point:
A conceptual point at the conjunction of two non-overlapping functional groups (source: ITU-T I.112).
Regionally Provided Service:
A service entitlement to only certain geographical part(s) of a PLMN, as controlled by the network operator.
This is the process of camping on a cell of the PLMN and doing any necessary LRs.
Registered PLMN (RPLMN):
This is the PLMN on which the UE has performed a location registration successfully.
Registration Area:
A (NAS) registration area is an area in which the UE may roam without a need to perform location registration, which is a NAS procedure.
Terminal devices capable of ODMA relay communications.
Relay/Seed Gateway:
Relay or Seed that communicates with the UTRAN, in either TDD or FDD mode.
Relaylink is a communications link between two ODMA relay nodes.
Release 99:
A particular version of the 3GPP System standards produced by the 3GPP project. Also: Release 4, Release 5, Release 6 etc..
A device that receives, amplifies and transmits the radiated or conducted RF carrier both in the down-link direction (from the base station to the mobile area) and in the up-link direction (from the mobile to the base station)
Requested QoS:
a QoS profile is requested at the beginning of a QoS session. QoS modification requests are also possible during the lifetime of a QoS session.
Required Eb/(No+Io) (dB):
The ratio between the received energy per information bit to the total effective noise and interference power density needed to satisfy the quality objectives.
Residual error rate:
A parameter describing service accuracy. The frequency of lost SDUs, and of corrupted or duplicated network SDUs delivered at the user-network interface.
Restricted local operator services:
communication services provided by an operator that involve either automated or human assistance (e.g., credit card billing, directory assistance, customer care) for which successful authentication is not necessary.
Retrieval service:
An interactive service which provides the capability of accessing information stored in data base centres. The information will be sent to the user on demand only. The information is retrieved on an individual basis, i.e., the time at which an information sequence is to start is under the control of the user (source ITU-T I.113).
The ability for a user to function in a serving network different from the home network. The serving network could be a shared network operated by two or more network operator.
Root directory:
Obsolete term for Master File.
Root Relay:
ODMA relay node where communications originate or terminate.
RRC Connection:
A point-to-point bi-directional connection between RRC peer entities on the UE and the UTRAN sides, respectively. An UE has either zero or one RRC connection.
RRC filtered mean power:
The mean power of a UTRA carrier as measured through a root raised cosine filter with roll-off factor a and a bandwidth equal to the chip rate of the radio access mode.

3.S  SWord‑p. 27

interface between an eNB and an EPC, providing an interconnection point between the EUTRAN and the EPC. It is also considered as a reference point.
SDU error probability:
The ratio of total incorrect service data units (SDUs) to total successfully transferred service data units plus incorrect service data units in a specified sample (source: ITU-T X.140).
SDU loss probability:
The ratio of total lost service data units (SDUs) to total transmitted service data units in a specified sample (source: ITU-T X.140).
SDU misdelivery probability:
The ratio of total misdelivered service data units (SDUs) to total service data units transferred between a specified source and destination user in a specified sample (source: ITU-T X.140).
SDU transfer delay:
The value of elapsed time between the start of transfer and successful transfer of a specified service data unit (SDU) (source: ITU-T X.140).
SDU transfer rate:
The total number of successfully transferred service data units (SDUs) in a transfer sample divided by the input/output time for that sample. The input/output time is the larger of the input time or the output time for the sample (source: ITU-T X.140).
Seamless handover:
"Seamless handover" is a handover without perceptible interruption of the radio connection.
A "sector" is a sub-area of a cell. All sectors within one cell are served by the same base station. A radio link within a sector can be identified by a single logical identification belonging to that sector.
Secured Packet:
The information flow on top of which the level of required security has been applied. An Application Message is transformed with respect to a chosen Transport Layer and chosen level of security into one or more Secured Packets.
The ability to prevent fraud as well as the protection of information availability, integrity and confidentiality.
Deployed ODMA relay node with or without a display/keypad.
Selected IP Traffic Offload (SIPTO):
Offload of selected types of IP traffic (e.g. internet traffic) towards a defined IP network close to the UE's point of attachment to the access network. SIPTO is applicable to traffic offload for the macro-cellular access network and for the H(e)NB subsystem.
Selected PLMN:
This is the PLMN that has been selected by the non-access stratum, either manually or automatically.
a component of the portfolio of choices offered by service providers to a user, a functionality offered to a user.
Service-less UE:
A UE that has only the Baseline capabilities.
Service Access Point:
A conceptual point where a protocol layer offers access to its services to upper layer.
Service Area:
The Service Area is defined in the same way as the Service Area according to ITU-T Recommendation Q.1001 [4]. In contrast to the PLMN area 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.
Service attribute:
A specified characteristic of a telecommunication service (source: ITU-T I.112).
Service bit rate:
The bit rate that is available to a user for the transfer of user information (source: ITU-T I.113).
Service Capabilities:
Bearers defined by parameters, and/or mechanisms needed to realise services. These are within networks and under network control.
Service Capability Feature:
Functionality offered by service capabilities that are accessible via the standardised application interface
Service Capability Server:
Network functionality providing open interfaces towards the functionality offered by 3GPP System service capabilities.
Service category or service class:
A service offered to the users described by a set of performance parameters and their specified values, limits or ranges. The set of parameters provides a comprehensive description of the service capability.
Service Continuity:
The uninterrupted user experience of a service that is using an active communication (e.g. an ongoing voice call) when a UE undergoes a radio access technology change or a CS/PS domain change without, as far as possible, the user noticing the change.
Service Control:
The ability of the user, home environment or serving environment to determine what a particular service does, for a specific invocation of that service, within the limitations of that service.
Service Data Unit (SDU):
In the reference model for OSI, an amount of information whose identity is preserved when transferred between peer (N+1)-layer entities and which is not interpreted by the supporting (N)-layer entities (source: ITU-T X.200 / ISO-IEC 7498-1).
Service delay:
The time elapsed from the invocation of the service request, to the corresponding service request indication at the Service Receiver, indicating the arrival of application data.
Service Enabler:
a capability which may be used, either by itself or in conjunction with other service enablers, to provide a service to the end user.
Service Execution Environment:
A platform on which an application or programme is authorised to perform a number of functionalities; examples of service execution environments are the user equipment, integrated circuit card and a network platform or any other server.
Service Feature:
Functionality that a 3GPP System shall offer to enable provision of services. Services, are made up of different service features.
Service Implementation Capabilities:
Set of implementation capabilities, in each technical domain, required to enable a UE to support a set of UE Service Capabilities.
Service model:
A general characterisation of services based upon a QoS paradigm, without specifying the actual performance targets.
Service Provider:
A Service Provider is either a network operator or an other entity that provides services to a subscriber (e.g. a MVNO)
Service receiver:
The entity which receives the service request indication primitive, containing the SDU.
Service relationship:
The association between two or more entities engaged in the provision of services.
Service request:
This is defined as being one invocation of the service through a service request primitive.
Service requester:
The entity which requests the initiation of a GPRS operation, through a service request.
Service Specific Entities:
Entities dedicated to the provisioning of a given (set of) service(s). The fact that they are implemented or not in a given PLMN should have limited impact on all the other entities of the PLMN.
Service subscriber:
Entity which subscribes to the General Packet Radio Service (GPRS) service.
Services (of a mobile cellular system):
The set of unctions that the mobile cellular system can make available to the user.
Serving BSS:
A role a BSS can take with respect to a specific connection between an MS and GERAN. There is one Serving BSS for each MS that has a connection to GERAN. The Serving BSS is in charge of the RRC connection between an MS and the GERAN. The Serving BSS terminates the Iu for this connection.
Serving Network:
The serving network provides the user with access to the services of home environment.
Serving RNS:
A role an RNS can take with respect to a specific connection between an UE and UTRAN. There is one Serving RNS for each UE that has a connection to UTRAN. The Serving RNS is in charge of the RRC connection between a UE and the UTRAN. The Serving RNS terminates the Iu for this connection.
Payment of amounts resulting from the accounting process.
Shared Channel:
A radio resource (transport channel or physical channel) that can be shared dynamically between several UEs.
Shared Network:
When two or more network operator sharing network elements.
Short File Identifier (SFI):
A 5-bit abbreviated name for a file in a directory on the UICC.
Short time:
Time, typically in number of minutes, to perform the off-line mechanism used for accounting.
The exchange of information specifically concerned with the establishment and control of connections, and with management, in a telecommunications network (source: ITU-T I.112).
Signalling connection:
An acknowledged-mode link between the user equipment and the core network to transfer higher layer information between the entities in the non-access stratum.
Signalling link:
Provides an acknowledged-mode link layer to transfer the UE-UTRAN signalling messages as well as UE - Core Network signalling messages (using the signalling connection.
SIM application toolkit procedures:
The portion of the communication protocol between the ME and the UICC that enables applications on the UICC to send commands to the ME.
SIM code:
Code which when combined with the network and NS codes refers to a unique SIM. The code is provided by the digits 8 to 15 of the IMSI
(U)SIM code group:
Combination of the (U)SIM code and the associated network subset and network codes (it is equivalent to the IMSI).
(U)SIM personalisation:
Enables a user to personalise a ME so that it may only be used with particular (U)SIM(s).
Simultaneous use of services:
The concurrent use of a circuit-mode service (voice or data) and packet-mode services (GPRS) by a single mobile station.
Soft Handover:
Soft handover is a category of handover procedures where the radio links are added and abandoned in such manner that the UE always keeps at least one radio link to the UTRAN.
SP code:
code which when combined with the network code refers to a unique SP. The code is provided in the GID1 file on the SIM (see Annex A.1.) and is correspondingly stored on the ME.
SP code group:
Combination of the SP code and the associated network code.
SP personalisation:
Allows the service provider to personalise a ME so that it can only be used with that particular service provider's (U)SIMs.
A performance criterion that describes the time interval required to perform a function or the rate at which the function is performed. (The function may or may not be performed with the desired accuracy.) (source: ITU-T I.350).
SRNC Radio Network Temporary Identifier (S-RNTI):
S-RNTI is UE identifier which is allocated by the Serving RNC and unique within this SRNC. It is allocated for all UEs having a RRC connection. S-RNTI is reallocated always when the Serving RNC for the RRC connection is changed and deallocated when the RRC connection is released.
SRNS Relocation:
The change of Iu instance and transfer of the SRNS role to another RNS.
Grouping of protocols related to one aspect of the services provided by one or several domains.
Steering of Roaming:
A technique whereby a roaming UE is encouraged to roam to a preferred VPLMN by the HPLMN.
Sub Network Management Functions:
Set of functions that are related to a network model for a set of network elements constituting a clearly defined sub-network, which may include relations between the network elements. This model enables additional functions on the sub-network level (typically in the areas of network topology presentation, alarm correlation, service impact analysis and circuit provisioning).
Subscribed QoS:
The network will not grant a QoS greater than the subscribed. The QoS profile subscription parameters are held in the HLR. An end user may have several QoS subscriptions. For security and the prevention of damage to the network, the end user cannot directly modify the QoS subscription profile data.
A Subscriber is an entity (associated with one or more users) that is engaged in a Subscription with a service provider. The subscriber is allowed to subscribe and unsubscribe services, to register a user or a list of users authorised to enjoy these services, and also to set the limits relative to the use that associated users make of these services.
A subscription describes the commercial relationship between the subscriber and the service provider.
Subscription Management (SuM):
set of capabilities that allow Operators, Service Providers, and indirectly subscribers, to provision, control, monitor the Subscription Profile.
Suitable Cell:
This is a cell on which an UE may camp. It must satisfy certain conditions.
Supplementary service:
A service which modifies or supplements a basic telecommunication service. Consequently, it cannot be offered to a user as a standalone service. It must be offered together with or in association with a basic telecommunication service. The same supplementary service may be common to a number of basic telecommunication services.
System Area:
The System Area is defined as the group of PLMN areas accessible by MSs. Interworking of several PLMNs and interworking between PLMNs and fixed network(s) permit public land mobile communication services at international level.

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