Content for  TR 21.905  Word version:  17.0.0

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3.T  TWord‑p. 31
Teleaction service:
A type of telecommunication service that uses short messages, requiring a low transmission rate, between the user and the network (source: ITU-T I.112).
Telecommunication port:
Ports which are intended to be connected to telecommunication networks (e.g. public switched telecommunication networks, integrated services digital networks), local area networks (e.g. Ethernet, Token Ring) and similar networks.
Telecommunication service:
What is offered by a PLMN operator or service provider to its customers in order to satisfy a specific telecommunication requirement. (source: ITU-T I.112). Telecommunication services are divided into two broad families: bearer services and teleservices (source: ITU-T I.210).
Is a type of telecommunication service that provides the complete capability, including terminal equipment functions, for communication between users according to standardised protocols and transmission capabilities established by agreement between operators.
A device into which a UICC can be inserted or embedded and which is capable of providing access to 3GPP System services to users, either alone or in conjunction with a UICC.
Terminal Equipment (TE):
Equipment that provides the functions necessary for the operation of the access protocols by the user. A functional group on the user side of a user-network interface (source: ITU-T I.112).
Test environment:
A "test environment" is the combination of a test propagation environment and a deployment scenario, which together describe the parameters necessary to perform a detailed analysis of a radio transmission technology.
Text conversation:
Real time transfer of text between users in at least two locations.
Text Telephony:
An audiovisual conversation service providing bi-directional real time transfer of text and optionally audio between users in two locations. Audio may be transmitted alternating with text or simultaneously with text. (Source ITU-T F.703)
Transient phenomenon:
Pertaining to or designating a phenomenon or a quantity which varies between two consecutive steady states during a time interval short compared with the time-scale of interest (IEC 60050-161 [6]).
A parameter describing service speed. The number of data bits successfully transferred in one direction between specified reference points per unit time (source: ITU-T I.113).
Toolkit applet:
An application on the UICC that generates proactive commands to the ME.
Total Conversation:
An audiovisual conversation service providing bi-directional symmetric real-time transfer of motion video, text and voice between users in two or more locations. (source ITU-T F.703)
Total power dynamic range:
The difference between the maximum and the minimum total transmit output power for a specified reference condition (TS25.104).
Traffic channel:
A "traffic channel" is a logical channel which carries user information.
Transit delay:
A parameter describing service speed. The time difference between the instant at which the first bit of a protocol data unit (PDU) crosses one designated boundary (reference point), and the instant at which the last bit of the PDU crosses a second designated boundary (source: ITU-T I.113).
Transmission bandwidth:
Bandwidth of an instantaneous transmission from a UE or BS, measured in Resource Block units.
Transmission bandwidth configuration:
The highest transmission bandwidth allowed for uplink or downlink in a given channel bandwidth, measured in Resource Block units.
Transmission Time Interval:
Transmission Time Interval is defined as the inter-arrival time of Transport Block Sets, i.e. the time it shall take to transmit a Transport Block Set.
Transmitter Antenna Gain (dBi):
The maximum gain of the transmitter antenna in the horizontal plane (specified as dB relative to an isotropic radiator.
Transmitter exclusion band:
The transmitter exclusion band is the band of frequencies over which no tests of radiated immunity of a transmitter are made. The exclusion band for transmitters is expressed relative to the carrier frequencies used (the carrier frequencies of the base stations activated transmitter(s).
Transmitter OFF period:
The time period during which the BS transmitter is not allowed to transmit.
Transmitter ON period:
The time period during which the BS transmitter is transmitting data and/or reference symbols, i.e. data subframes or DwPTS.
Transmitter transient period:
The time period during which the transmitter is changing from the OFF period to the ON period or vice versa.
Transport Block:
Transport Block is defined as the basic data unit exchanged between L1 and MAC. An equivalent term for Transport Block is "MAC PDU".
Transport Block Set:
Transport Block Set is defined as a set of Transport Blocks that is exchanged between L1 and MAC at the same time instance using the same transport channel. An equivalent term for Transport Block Set is "MAC PDU Set".
Transport Block Set Size:
Transport Block Set Size is defined as the number of bits in a Transport Block Set.
Transport Block Size:
Transport Block Size is defined as the size (number of bits) of a Transport Block.
Transport channel:
The channels offered by the physical layer to Layer 2 for data transport between peer L1 entities are denoted as Transport Channels. Different types of transport channels are defined by how and with which characteristics data is transferred on the physical layer, e.g. whether using dedicated or common physical channels.
Transport Format:
A Transport Format is defined as a format offered by L1 to MAC for the delivery of a Transport Block Set during a Transmission Time Interval on a Transport Channel. The Transport Format constitutes of two parts - one dynamic part and one semi-static part.
Transport Format Combination:
A Transport Format Combination is defined as the combination of currently valid Transport Formats on all Transport Channels of an UE, i.e. containing one Transport Format from each Transport Channel.
Transport Format Combination Set:
A Transport Format Combination Set is defined as a set of Transport Format Combinations to be used by an UE.
Transport Format Combination Indicator (TFCI):
A Transport Format Combination Indicator is a representation of the current Transport Format Combination.
Transport Format Identification (TFI in UTRAN, TFIN in GERAN):
A label for a specific Transport Format within a Transport Format Set.
Transport Format Set:
A set of Transport Formats. For example, a variable rate DCH has a Transport Format Set (one Transport Format for each rate), whereas a fixed rate DCH has a single Transport Format.

3.U  UWord‑p. 32
UE Service Capabilities:
Capabilities that can be used either singly or in combination to deliver services to the user. The characteristic of UE Service Capabilities is that their logical function can be defined in a way that is independent of the implementation of the 3GPP System (although all UE Service Capabilities are of course constrained by the implementation of the 3GPP System). Examples: a data bearer of 144 kbps; a high quality speech teleservice; an IP teleservice; a capability to forward a speech call.
a physically secure device, an IC card (or 'smart card'), that may be inserted and removed from the terminal, or embedded inside the terminal. It may contain one or more applications. One of the applications may be a USIM.
Universal Subscriber Identity Module (USIM):
An application residing on the UICC used for accessing services provided by mobile networks, which the application is able to register on with the appropriate security.
Universal Terrestrial Radio Access Network (UTRAN):
UTRAN is a conceptual term identifying that part of the network which consists of RNCs and Node Bs between Iu and Uu interfaces.
Usage Parameter Control (UPC):
Set of actions taken by the network to monitor and control the offered traffic and the validity of the connection with respect to the traffic contract negotiated between the user and the network.
An "uplink" is a unidirectional radio link for the transmission of signals from a UE to a base station, from a Mobile Station to a mobile base station or from a mobile base station to a base station.
Uplink operating band:
The part of the operating band designated for uplink.
Uplink Pilot Timeslot:
Uplink part of the special subframe (for TDD operation)
Upper RF bandwidth edge:
The frequency of the upper edge of the Base Station RF bandwidth, used as a frequency reference point for transmitter and receiver requirements
URA updating:
URA updating is a family of procedures that updates the UTRAN registration area of a UE when a RRC connection exists and the position of the UE is known on URA level in the UTRAN.
An entity, not part of the 3GPP System , which uses 3GPP System services. Example: a person using a 3GPP System mobile station as a portable telephone.
User-network interface:
The interface between the terminal equipment and a network termination at which interface the access protocols apply (source: ITU-T I.112).
User-user protocol:
A protocol that is adopted between two or more users in order to ensure communication between them (source: ITU-T I.112).
User access or user network access:
The means by which a user is connected to a telecommunication network in order to use the services and/or facilities of that network (source: ITU-T I.112).
User Equipment (UE):
Allows a user access to network services. For the purpose of 3GPP specifications the interface between the UE and the network is the radio interface. A User Equipment can be subdivided into a number of domains, the domains being separated by reference points. Currently the User Equipment is subdivided into the UICC domain and the ME Domain. The ME Domain can further be subdivided into one or more Mobile Termination (MT) and Terminal Equipment (TE) components showing the connectivity between multiple functional groups.
In the context of Fixed Broadband Access to IMS, TISPAN defines the term UE in ETSI TR180 000 [5].
User Interface Profile:
Contains information to present the personalised user interface within the capabilities of the terminal and serving network.
User Services Profile:
Contains identification of subscriber services, their status and reference to service preferences.
UTRA Radio access mode:
the selected UTRA radio access mode ie UTRA-FDD;UTRA-TDD.
Time Division Duplex UTRA access mode 1.28 Mcps option
Time Division Duplex UTRA Radio access mode (Includes UTRA-NTDD and UTRA-WTDD)
Time Division Duplex UTRA access mode 3.84 Mcps option
UTRAN access point:
A conceptual point within the UTRAN performing radio transmission and reception. A UTRAN access point is associated with one specific cell, i.e. there exists one UTRAN access point for each cell. It is the UTRAN-side end point of a radio link.
UTRAN Registration Area:
The UTRAN Registration Area is an area covered by a number of cells. The URA is only internally known in the UTRAN.
UTRAN Radio Network Temporary Identifier:
The U-RNTI is a unique UE identifier that consists of two parts, an SRNC identifier and a C-RNTI. U-RNTI is allocated to an UE having a RRC connection. It identifies the UE within UTRAN and is used as an UE identifier in cell update, URA update, RRC connection reestablishment and (UTRAN originated) paging messages and associated responses on the radio interface.
User Profile:
Is the set of information necessary to provide a user with a consistent, personalised service environment, irrespective of the user's location or the terminal used (within the limitations of the terminal and the serving network).
The Radio interface between UTRAN and the User Equipment.

3.V  VWord‑p. 34
Value Added Service Provider:
Provides services other than basic telecommunications service for which additional charges may be incurred.
Variable bit rate service:
A type of telecommunication service characterised by a service bit rate specified by statistically expressed parameters which allow the bit rate to vary within defined limits (source: ITU-T I.113).
Virtual Home Environment:
A concept for personal service environment portability across network boundaries and between terminals.
Virtual Machine:
A software program that simulates a hypothetical computer central processing unit. The programs executed by a virtual machine are represented as byte codes, which are primitive operations for this hypothetical computer.
Visited PLMN:
This is a PLMN different from the HPLMN (if the EHPLMN list is not present or is empty) or different from an EHPLMN (if the EHPLMN list is present).
Visited PLMN of home country:
This is a Visited PLMN where the MCC part of the PLMN identity is the same as the MCC of the IMSI.

3.W  W

Wide TDD - the 3.84 Mcps chip rate UTRA-TDD option.
WLAN User Equipment: - a UE (equipped with UICC card including (U)SIM) utilized by a subscriber capable of accessing a WLAN network. A WLAN UE may include entities whose configuration, operation and software environment are not under the exclusive control of the 3GPP system operator, such as a laptop computer or PDA with a WLAN card, UICC card reader and suitable software applications.

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