LTE Identifiers

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Information about LTE Identifiers
Technology

Published on September 29, 2014

Author: allabout4g

Source: slideshare.net

Description

This presentation discusses the different types of identifiers used in LTE

LTE Identifiers © 2014 EventHelix.com Inc. All Rights Reserved (c) 2014 EventHelix.com Inc. 1

IMSIInternational Mobile Subscriber IdentityIdentifies the SIM or USIM PLMNPublic Land Mobile Network MCC Mobile Country Code 3 digits MNC Mobile Network Code 2 to 3 digits MSIN Mobile Subscriber Identification Number HLR/HSS Identity Subscriber Identity (c) 2014 EventHelix.com Inc. 2

GUTIGlobally Unique Temporary Identifier Identifies the UE globally without revealing identity GUMMEIGlobally Unique Mobile Management Entity Identifer MCC 3 digits 1 nibble per digit MNC 2 to 3 digits1 nibble per digit MME Group ID 16 bit MME Code 8 bit M-TMSI Identifies the mobile 32 bit (c) 2014 EventHelix.com Inc. 3

MME Identifier MME Group ID 16 bit MME Code 8 bit S-TMSIUsed for mobile paging MME Code 8 bit M-TMSI 32 bit (c) 2014 EventHelix.com Inc. 4

IMEISVInternational Mobile Equipment Identity with Software Version Identifies the mobile equipment serial number, hardware model number and software version number TACType Approval Code 8 digits SNR Serial Number 6 digits SVNSoftware Version 2 digits (c) 2014 EventHelix.com Inc. 5

Radio Network Temporary Identifier (RNTI) P-RNTI •Identifies a group of mobiles in a paging message •Derived from the IMSI of the user RA-RNTI •Assigned in response to a random access preamble •UE will use the RA- RNTI to initiate the RRC Connection C-RNTI •Identifies the mobile within a cell •Can be temp, semi persistent or permanent SI-RNTI •Sent on PDCCH to specify the location of System Information Blocks on the PD-SCH •Not mobile specific (c) 2014 EventHelix.com Inc. 6

C-RNTI Temp C-RNTI •Allocated during the random access procedure •May turn into a permanent C- RNTI after contention resolution Semi persistent C- RNTI •Used to schedule semi persistent resources via the PDCCH •SPS-CRNTI is used for scheduling persistent scheduling, Permanent C- RNTI •C-RNTI value assigned after contention resolution after a random access •Used for scheduling dynamic resources (c) 2014 EventHelix.com Inc. 7

TAITracking Area Identity Tracking area contains several cells. Typically all cells of a eNodeBwould constitute a tracking area. MCCMobile Country Code 3 digits MNC Mobile Network Code 2 to 3 digits TACTracking Area Code 16 bits (c) 2014 EventHelix.com Inc. 8

PDN IDPacket Data Network Identity APNAccess Point Name<APN-NI>.apn.epc.mnc<MNC>.mcc<MCC>.3gppnetwork.org APN-NIAPN Network Identifier Defines the PDN to which the UE requests connectivity APN-OIAPN Operator Identifier Defines the PLMN in which the PDN GW is located (c) 2014 EventHelix.com Inc. 9

LTE Bearer Establishment Identifiers EPS Bearer ID •Evolved Packet System Bearer Identifier •Identifies an EPS bearer (Default or Dedicated) within a UE •4 bits E-RAB ID •E-UTRAN Radio Access Bearer Identifier •Identifies an E- RAB per within a UE •4 bits DRB ID •Data Radio Bearer Identifier •Identifies a DRB per within a UE •4 bits (c) 2014 EventHelix.com Inc. 10

More LTE Identities •Uniquely identifies UE within a eNB •The ID is used over the S1-MME interface •32 bit eNBS1AP UE ID •Uniquely identifies a UE within an MME •The ID is used over the S1-MME interface •32 bit MME S1AP UE ID •Tunnel Endpoint Identifier •Endpoint in a GTP Tunnel TEID •Globally identifies the eNB •PLMN id + eNBID Global eNBID (c) 2014 EventHelix.com Inc. 11

Thank You Links Description EventStudio System Designer Sequence diagram based systemsengineering tool. VisualEtherProtocolAnalyzer Wiresharkbased visual protocol analysis and system design reverse engineering tool. Telecom Call Flows GSM, SIP, H.323, ISUP, LTE and IMS call flows. TCP/IPSequence Diagrams TCP/IP explained with sequence diagrams. Telecom• Networking • Software Real-time and embedded systems, call flows andobject oriented design articles. (c) 2014 EventHelix.com Inc. 12 Thank you for visiting EventHelix.com. The following links provide more information about telecom design tools and techniques:

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