LTE Identifiers


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LTE Identifiers

  1. 1. www.nmcgroups.comLTE Identifiers · PLMN ID (MCC + MNC) · IMSI · UE IP (for static IP allocation) · P-GW ID (static P-GW allocation case) · PDN ID (APN) · IMSI · PDN IP Address (Static IP) HSS SPR · IMSI · IMSI · MMEI · P-GW ID · PDN ID (APN) · GUMMEI · TAI List · TAI List allocation Policy/Rule · GUTI · IMSI MME · eNB S1-AP UE ID MME · GUTI · IMSI · ECGI PCRF · GUTI · TAI · MME S1-AP UE ID · ECGI · IMSI · S-TMSI · IMSI · PDN ID (APN) · P-GW ID · IMSI · UE IP · eNB ID · PDN ID (APN) · IMEI · ECGI · P-GW ID · MMEI · IP Pool (for dynamic IP TAI 1 · TAI allocation) TAI 1 TAI 1 PDN · C-RNTI · ECGI S-GW · IMSI · ECGI P-GW APN · TAI · P-GW ID · PDN IP Address (Dynamic IP) · PDN ID (APN) Radio Bearer S1 Bearer S5 Bearer UE IP DRB ID DL DRB ID UL S1 TEID UL S1 TEID UL S5 TEID UL S5 TEID UL E-RAB E-RAB ID EPS Bearer EPS Bearer ID TAI 2 · Commissioning/Provisioning · ID from UE · ID from eNB · ID from MME · ID from HSS · ID from P-GW · ID from S-GW IMSI TAI GUTI S-TMSI 40 bits PLMN ID PLMN ID PLMN ID MMEI MCC MNC MSIN MCC MNC TAC MCC MNC MMEGI MMEC M-TMSI 3 digits 2~3 digits 9~10 digits 12 bits 8~12 bits 16 bits 12 bits 8~12 bits 16 bits 8 bits 32 bits IMSI TAI GUMMEI GUTI LTE Identifiers 1
  2. 2. LTE Identifiers International Mobile • Unique identification of mobile (LTE) subscriber IMSI (not more than 15 digits) = PLMN IMSI P Subscriber Identity • Network (MME) gets the PLMN of the subscriber ID + MSIN = MCC + MNC + MSIN Public Land Mobile PLMN ID (not more than 6 digits) = PLMN ID • Unique identification of PLMN P Network Identifier MCC + MNC MCC Mobile Country Code • assigned by ITU 3 digits P MNC Mobile Network Code • assigned by National Authority 2~3 digits P Mobile Subscriber MSIN • assigned by operator 9~10 digits P Identification Number Globally Unique • To identify a UE between the UE and the MME on GUTI (not more than 80 bits) = GUTI T Temporary UE Identity behalf of IMSI for security reason GUMMEI + M-TMSI • GUTI is stored in TIN parameter of UE’s MM Temporary Identity used TIN context. TIN indicates which temporary ID will be TIN = GUTI T in Next Update used in the next update SAE Temporary Mobile • To locally identify a UE in short within a MME S-TMSI S-TMSI (40 bits) = MMEC + M-TMSI T Subscriber Identity group (Unique within a MME Pool) MME Mobile Subscriber M-TMSI • Unique within a MME 32 bits T Identity Globally Unique MME • To identify a MME uniquely in global GUMMEI (not more than 48 bits) GUMMEI P Identity • GUTI contains GUMMEI = PLMN ID + MMEI • To identify a MME uniquely within a PLMN MMEI MME Identifier MMEI (24 bits) = MMEGI + MMEC P • Operator commissions at eNB MMEGI MME Group Identifier • Unique within a PLMN 16 bits P • To identify a MME uniquely within a MME Group. MMEC MME Code 8 bits P • S-TMSI contains MMEC Cell- Radio Network C-RNTI • To identify an UE uniquely in a cell 0x0001 ~ 0xFFF3 (16 bits) T Temporary Identifier eNB S1AP UE eNB S1 Application • To uniquely identify UE on S1- MME Interface in 32-bit Integer (0 .. 232 - 1) T ID Protocol UE ID eNB MME S1AP MME S1 Application • To uniquely identify UE on S1- MME Interface in 32-bit Integer (0 .. 232 - 1) T UE ID Protocol UE ID MME International Mobile IMEI • To identify a ME (Mobile Equipment) uniquely IMEI (15 digits) = TAC + SNR + CD P Equipment Identity IMEI/SV IMEI/Software Version • To identify a ME (Mobile Equipment) uniquely IMEI/SV (16 digits) = TAC + SNR + SVN P E-UTRAN Cell Global • To identify a Cell in global (Globally Unique) ECGI (not more than 52 bits) = PLMN I ECGI P Identifier • EPC can know UE location based of ECGI D+ ECI ECI E-UTRAN Cell Identifier • To identify a Cell within a PLMN ECI (28 Bits) = eNB ID + Cell ID P Global eNB Global eNB ID (not more than 44 bits) Global eNodeB Identifier • To identify an eNB in global (Globally Unique) P ID = PLMN ID + eNB ID eNB ID eNodeB Identifier • To identify an eNB within a PLMN 20 bits P • To identify a specific PDN GW (P-GW) IP address (4 bytes) or FQDN (variable P-GW ID PDN GW Identity • HSS assigns P-GW for PDN (IP network) P length) connection of each UE • To identify Tracking Area TAI (not more than 32 bits) = PLMN ID TAI Tracking Area Identity P • Globally unique + TAC • To indicate eNB to which Tracking Area the eNB TAC Tracking Area Code belongs (per Cell) 16 bits P • Unique within a PLMN • UE can move into the cells included in TAL list Tracking Area Identity TAI List without location update (TA update) {TAI} (variable length) P List • Globally unique P: Permanent T: Temporary LTE Identifiers 2
  3. 3. LTE Identifiers • To identify an PDN (IP network), that mobile data user wants to communicate with • PDN Identity (APN) is used to determine the P-GW Packet Data Network and point of interconnection with a PDN PDN Identify = APN = APN.NI + APN.OI PDN ID P Identity • With APN as query parameter to the DNS (variable length) procedures, the MME will receive a list of candidate P-GWs, and then a P-GW is selected by MME with policy EPS Bearer Evolved Packet System • To identify an EPS bearer (Default or Dedicated) 4 bits T ID Bearer Identifier per an UE E-UTRAN Radio Access E-RAB ID • To identify an E-RAB per an UE 4 bits T Bearer Identifier Data Radio Bearer DRB ID • To identify a DRB per an UE 4 bits T Identifier • To identify the default bearer associated with a LBI Linked EPS Bearer ID 4 bits T dedicated EPS bearer Tunnel End Point • To identify the end point of a GTP tunnel when TEID 32 bits T identifier the tunnel is established About NMC Consulting Group NMC Consulting Group was founded on year 2002 and is advanced, professional network consulting company which is specialized for IP Network area like FTTH, Metro Ethernet and IP/MPLS, Service area like IPTV and IMS lastly, Wireless network area like Mobile WIMAX and LTE. Copyright © 2002-2011 NMC Consulting Group. All rights reserved. LTE Identifiers 3