Gsm architecture

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Gsm architecture

  1. 1. G S M 2G Bas ic N e twork Arch ite ctu re Internet GPRS (TCP/IP) 2G SGSN PS Core GGSN GSM mobile BSS SRRi Base Station Subsystem CS Core BSC T GSM BTS C GSM S MSCi HLR mobile M mobile Indoor 2G BTS PLMN/PSTN/ISDN IN SCP HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  2. 2. 3G PP R99 A rchitecture Internet GPRS (TCP/IP) 2G/3G SGSN GGSN GSM mobile BSS CS Core SRRi Base Station Subsystem BSC T GSM BTS C GSM S MSCi HLR mobile M M G R W N C 3G MSCmobile 3G BTS (Node B) PLMN/PSTN/ISDN IN SCP HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  3. 3. MS C S erver - s eparates us er and controlplane MSC 3GPP Rel99 MSC Server 3GPP Rel4 • MGW is a part of 3G MSC • MGW is separate from MSS • GSM and 3G Circuit Switching • GSM and 3G Circuit Switched services • Transmission is TDM • Transmission is IP (also ATM can be used) • Voice and signaling over IP MS Ci - M11 MS S M12A TDM based Backbone & PSTN A H.248/Megaco Sigtran Packet based Backbone (IP/ TM) AIu-CS A & Iu-CS & TDM based PSTN MGW - U1 .5 MGW - U2 control plane user plane HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  4. 4. 3G PP Rel. 4 A rchitecture Network Operator Application Plane CAP/INAP CAP/INAP APSE HLR MAP MAP MSC Server Control Plane BICC-CS-2 / SIP-T MSC Server or GCS Sigtran/ Sigtran/ Megaco, H248 Megaco, H248 GSM/EDGE BSS A User Plane IP/MPLS/ATM 3G RAN Iu-CS PSTN Backbone MGW MGW Control Plane and User plane separated in Rel-4 HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  5. 5. MS C S erver s ys tem brings OPE X s avings Ne w M SC Se r ve r w o r l d  Vo ic e a n d s ig n a lin g l o ve r I P M S S  N o t r a n s it s w it c h e s needed  O &M S a v in g s  F r e e M S S s it e GE RAN l c a t io n o  M GWs in u n m a n n e d H .2 4 8 S ig t r a n B S C / RN C s it e s U T RAN A  H ig h c a p a c it y , s m a l l M G W T r f l s m sispsaio n s a v in g s an o r o ce I P / AT M M G W I u -CS  L o c a l s w it c h in g  B a n d w id t h s a v in g sPS TN / I S D N HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  6. 6. Inves tment protection – C A PE Xs avings I N Fu l s u pport l f o r e x is t in g MA s e r v ic e s P C AP / I N A  GS M / E D GE s u p p o r t C AP / I N AP / M AP P H L R M AP M AP  T D M , I P a n d AT M M S S M S S t r a n s m is s io n  3GGE RAN GE RAN Mc Mc L o n g t e r m in v e s t m e n t A M G I P / AT M M G A p r o t e c t io n W Bac k b o W ne Al M S C S e r v e r s y s t e m lU T RAN U T RAN el ment s e l -CS u l -CS u s u pport f u l I P M u l im e d ia , l t PS T N / I S DN 3 GP P Re l / Re l / Re l 7 .5 .6 . HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  7. 7. Rel.4 Network Des ign with MS S and MG Ws Network Operator Application Plane CAP/INAP CAP/INAP APSE HLR MAP MAP MSC Server Control Plane BICC-CS-2 / SIP-T MSC Server or GCS Sigtran/ Sigtran/ Megaco, H248 Megaco, H248 GSM/EDGE BSS A User Plane IP/MPLS/ATM 3G RAN Iu-CS PSTN Backbone MGW MGW Control Plane and User plane separated in Rel-4 HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  8. 8. MS C S erver, MS S (M13.2)  2G/ CS traffic control in Rel4-based networks 3G O v e r v ie w  Media transportation handled by MGW • GSM and WCDMA call control and F u n c t io n a l y it mobility management • Controls several MGWs • VLR, SSP, SMS, CS-data C a p a c it y • 1 ,200,000 subscribers • 1 ,200,000 BHCA • 1 ,200,000 SMS/ BH • 41 ,500 simult. calls HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  9. 9. Dis tributed Network A rchitecture of Us er Plane  M G W will b e locate d as clos e as th e acce s s ne twork to h and le local s witch ing. A MG MSC Server W MSC Serverd e s 1 or m ore MG Ws s ite inclu A MG W s ite m ay h ave conne ctions to: MGW Site 1 G S M BS S WD C M A R AN MGW Site 2 PS TN O th e r M G W s ite s via an inte r-s ite b ackb one : BSC MGW A MGW → Ibcb n P ako e GSM → A Mb c MGW e MGW T ako bn BSC → TDMb c b n ako e A GSM M G Ws o n th e s ite are conne cte d to e ach oth e r with an RNC IP/ATM/TDM intra-s ite b ackb one MGW Backbone Iu WCDMA Intra-s ite traffic is d is trib uMGW e ve nly am ong th e MG Ws on te d RNC Iu th e s ite WCDMA PSTN/ PLMN PSTN/ PLMN • Dimensioning can be done according to subscriber and traffic parameters (number of 2G/3G subscribers, traffic per subscriber, call length, PSTN interconnection point, used codec inside MSS network…) HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  10. 10. MG W Dimens ioning C riteria  Th e M G W d oe s not inclu d e any s u b s crib e r d atab as e s s o it d oe s not  care ab ou t th e nu m b e r of s u b s crib e rs , only ab ou t th e am ou nt of  traffic ge ne rate d b y th os e s u b s crib e rs  M G W is d im e ns ione d b as e d on  B u s y H ou r C all Atte m p t (BH C A)  N u m b e r of S im u ltane ou s C alls  # of TD M P orts R e qu ire d  # of ATM P orts R e qu ire d  # of IP P orts R e qu ire d  # of TC U (Trans cod ing U nit) R e qu ire d  # of IS U (Inte rface S ignalling U nit) R e qu ire dHUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  11. 11. MS C S erver overview  Th e M S C S e rve r is a circu it-s witch e d call control p rod u ct offe ring all G S M and 3G circu it-s witch e d s e rvice s .  Th e M S C S e rve r allows op e rators to:  p rovid e s am e C S s e rvice s as with an MS C  com b ine trans p ort of voice and d ata (G P R S ) in a s ingle trans p ort ne twork  op tim ize s ignaling & trans p ort ne tworks ,s e p arate ly p u rch as e call control and traffic cap acity  h ave a cle ar e volu tion to IP b ackb one with th e M G W  th e M S C S e rve r is a fu nctionality wh ich can b e u p grad e d from th e M S C i and TM S C i ne twork e le m e nts (2G or 3G ) HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential11 © NOKIA MSC Server marketing1 .PPT / 26.9.2000 / Tu/ A KN
  12. 12. Integrated MS C S erver  S till s u p p orts fu ll M S C i fu nctionality  C ontains  G ate way M S C F u n ctionality  Vis ite d M S C F u nctionality  M e d ia G ate way C ontrol F u nction 2) MSS activation MSCi - M11 1 ) M1 2 upgrade MSCi - M12 MSS GMSC VMSC GMSC VMSC GMSC VMSC Switching IWF Switching IWF Switching IWF MGCF HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  13. 13. S G W in MG W MSC Server MSC Server TDMGSM BSS IP/ATM BSC 2. TDM SGW SGW ATM/IP 3.& 4. ATM Backbone PSTN/ 1. MGW PLMN WCDMA RNC 1) RANAP (SS7) / ATM <---> IP 2) BSSAP (SS7) / TDM <---> IP SIGNALING 3) MAP/CAP/INAP (SS7 SCCP) / TDM <---> IP TRANSPORT 4) ISUP/TUP/IUP (SS7 MTP3) / TDM <---> IP HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  14. 14. Rel4 Network Interfaces & Protocols HLR Services CAP BICC for Call MAP Control H.248 for BICC, SIP MSS ATM/IP (G)MSS MGW control Nc ISUP over IP RANAP or towards BSSAP H.248 Mc PSTN towards IP H.248 radio Mc IP network RANAP AAL2/AAL5 AAL5/ATM ATM Nb SS7 PSTN Iu- CS TDM RTP MGW IP (G)MGW BSSAP RNC AAL2 User data over A ATM BSC ATM or IP or TDM TDMHUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential
  15. 15. S ecurity Level: INTE RNA L Thanks www. hua we i. c o m www.h u awe i.comHUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

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