A card holding an Integrated Circuit containing subscriber, end user, authentication and/or application data for one or more applications.
IC card SIM:
Obsolete term for ID-1 SIM.
A document, in the form of a questionnaire, which when completed for an implementation or system becomes an ICS.
A UICC having the form on an ID-000 card (see ISO 7816-1 ) that contains a SIM application.
A UICC having the format of an ID-1 card (see ISO 7816-1 ) that contains a SIM.
The state of UE switched on but which does not have any established RRC connection.
IP Flow Mobility:
distribution of IP flows on a UE between 3GPP and WLAN available accesses based on the different characteristics of the IP flows, the operator policies and the capabilities of the available accesses.
A capability that relates to a particular technical domain. Examples: a spreading factor of 128 (in the domain of the physical layer); the A5 algorithm; a 64 bit key length (in the domain of security); a power output of 21 dBm (in the domain of transmitter performance); support of AMR Codec (in the domain of the Codec); support of CHV1 (in the domain of the USIM).
Implementation Conformance Statement (ICS):
A statement made by the supplier of an implementation or system claimed to conform to a given specification, stating which capabilities have been implemented. The ICS can take several forms: protocol ICS, profile ICS, profile specific ICS, information object ICS, etc.
Information Data Rate:
Rate of the user information, which must be transmitted over the Air Interface. For example, output rate of the voice codec.
Initial paging information:
This information indicates if the UE needs to continue to read more paging information and eventually receive a page message.
Initial paging occasion:
The paging occasion the UE uses as starting point for its paging DRX cycle.
(in the context of security) The avoidance of unauthorised modification of information.
A handover between different cells. An inter-cell handover requires network connections to be altered.
Inter PLMN handover:
Handover between different PLMNs, ie having different MCC-MNC.
Inter system handover:
Handover between networks using different radiosystems , e.g. UMTS - GSM.
A service which provides the means for bi-directional exchange of information between users. Interactive services are divided into three classes of services: conversational services, messaging services and retrieval services (source: ITU-T I.113).
The common boundary between two associated systems (source: ITU-T I.112).
International Mobile Station Equipment Identity (IMEI):
An "International Mobile Station Equipment Identity" is a unique number which shall be allocated to each individual mobile station equipment in the PLMN and shall be unconditionally implemented by the MS manufacturer.
International mobile user number (IMUN):
The International Mobile User Number is a diallable number allocated to a 3GPP System user.
Interference Signal Code Power (ISCP):
Given only interference power is received, the average power of the received signal after despreading and combining.
A software program that simulates a hypothetical computer by performing the operations defined by the instructions of this computer.(see also 'byte code' and 'virtual machine').
Interworking WLAN (I-WLAN):
A WLAN that interworks with a 3GPP system.
A handover within one sector or between different sectors of the same cell. An intra-cell handover does not require network connections to be altered.
Intra PLMN handover:
Handover within the same network, ie having the same MCC-MNC regardless of radio access system.
IP-Connectivity Access Network (IP-CAN):
The collection of network entities and interfaces that provides the underlying IP transport connectivity between the UE and the IMS entities. An example of an "IP-Connectivity Access Network" is GPRS.
IP-Connectivity Access Network bearer (IP-CAN bearer):
The data communications bearer provided by the IP-Connectivity Access Network. When using GPRS, the IP-Connectivity Access Network bearers are provided by PDP Contexts.
IRP Information Model:
An IRP Information Model consists of an IRP Information Service and a Network Resource Model (see below for definitions of IRP Information Service and Network Resource Model).
IRP Information Service:
An IRP Information Service describes the information flow and support objects for a certain functional area, e.g. the alarm information service in the fault management area. As an example of support objects, for the Alarm IRP there is the alarm record and alarm list.
IRP Solution Set:
An IRP Solution Set is a mapping of the IRP Information Service to one of several technologies (CORBA/IDL, SNMP/SMI, CMIP/GDMO, etc.). An IRP Information Service can be mapped to several different IRP Solution Sets. Different technology selections may be done for different IRPs.
Inter System Change:
a change of radio access between different radio access technologies such as GSM and UMTS.
IMS Credentials (IMC):
A set of IMS security data and functions for IMS access by a terminal that does not support any 3GPP access technology.. The IMC is not including an ISIM or a USIM. The IMC is not used if ISIM or USIM is present.
IMS Multimedia Telephony:
A service that allows multimedia conversational communications between two or more users. It provides real time bidirectional conversational transfer of media, e.g. speech, video, text or other types of data. The IMS multimedia telephony service includes Supplementary Services and takes account of regulatory requirements.
IMS SIM (ISIM):
An application residing on the UICC that provides access to IP Multimedia Services.
Interconnection point between an RNC or a BSC and a 3G Core Network. It is also considered as a reference point.
Routing functionality for intra domain connection of RAN nodes to multiple CN nodes.
mode of operation of the MS when connected to the Core Network via GERAN or UTRAN and the Iu interface.
Interface between an RNC and a Node B.
A logical interface between two RNC. Whilst logically representing a point to point link between RNC, the physical realisation may not be a point to point link.