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docslide.us_rnc-3820-presentation-55844f36a950e

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docslide.us_rnc-3820-presentation-55844f36a950e

  1. 1. RNC -3820 (Brief Details about 3G-RNC)
  2. 2. 1 SCBDF 1 TUB GPB(mMp) CMXB ET-IPG GPB(C1MP) SPB GPB(mMP) GPB(C2MP) GPB(mMP) SPB ETMF-41 DUMMY SPB ETMF-41 DUMMY ETMF-4 DUMMY 2 3 DUMMY DUMMY GPB(C2MP) SPB GPB(C1MP) ET-IPG TUB CMXB SCBDF 4 5 76 8 10 11 129 13 15 1916 17 20 2114 18 2824 25 272622 23 APP APP POW CAB TOWARDS APP ,PORT-20,25 SSU (Clock Sync Source) BTSOL MUX TOWARDS APP ,PORT-70, initially LOGIN and all software are installed in this card. (IMP CARD) SMA -9pin F connector cable MPBN (SWITCH) MASTERshelf EXTENDEDshelfEXTENDEDshelf SPB Port-37 MGW MSS OSS Port-37 Port-60 Port-60 Mur interface IuPs IuCs signalling Mub interface Node-B RNC – 3820 (SHRNC)GPS
  3. 3. RNC Products (P7)  RNC 3810 – the first generation Ericsson RNC  Throughput limited to approx. 1 200 Mbit/s due to inter subrack communiction bottleneck  Power feeding limited to 800 W per subrack  RNC 3820 – the second generation Ericsson RNC  Modified architecture for increased throughput (2-4 Gbit/s), e.g. introduction of 10 GE switching infrastructure between and within subracks  Power feeding increased to 2 400 W per subrack for introduction of high capacity hardware
  4. 4.  RNC -3820 Cabinet The letters in the figure above denote the following: •A— ES •B— MS •C — Active Patch Panel (APP)
  5. 5. RNC 3820 Maximum Configuration Fan unit 2 Extension Subrack 1 Main Subrack Active Patch Panel Extension Subrack 2 Main Cabinet Fan unit 1
  6. 6. Main Subrack Air intake Fan unit High Capacity Subrack (HCS)Fan unit Extension Subrack 1 Air intake Fan unit Fan unit Extension Subrack 2 Air intake Fan unit Fan unit Cabinet Layout BYB 501 • 1 - 3 High Capacity Subracks Same mounting as for RNC 3810 Active Patch Panel Active Patch Panel Connection Fields
  7. 7. RNC 3820 Node Layouts Examples RNC 3820 – 110 MS ES-1 (S1) ES-2 (S2) RNC 3820 – 70 MS ES-1 (S1) RNC 3820 – 30 MS Throughput: 550 Mbps 1 350 Mbit/s 2 000 Mbit/s Connectivity: 256 Iub Links 768 Iub Links 768 Iub Links 768 cells 2 304 cells 2 304 cells Node Size: A B C
  8. 8. GPB- General Purpose Processor Board The GPB operates as a Main Processor (MP). It contains and executes the main part of the RNC software. In the MS, four GPB pairs are duplicated to provide redundancy SCB – Switch Core Board Cell switch core functionality Circuits for System Clock (19.44 MHz) distribution Interfaces for node-internal links Interfaces for fan supervision and control Interfaces for GPS information Power filtering and distribution Over-temperature protection for subracks TUB – Timing Unit Board Interface for external clock input (an alternative to the transmission clock) Interface for GPS signal input Generation of reference timing signals Regeneration of reference timing signals Stabilization of reference timing signals Handling of node synchronization procedures System Clock oscillator (19.44 MHz)
  9. 9. SPB – Special Purpose Board - Packet Data Router (PDR), terminates the GTP-U protocol towards the Packet CN. - Common Channel, terminates configured radio channels, for example FACH. - Dedicated Channel, terminates dynamic radio channels, for example DCH, with or without HW acceleration. - Point to multipoint - Iu, MBMS stream multicasting between subracks. - Point to multipoint - Iub, MBMS stream multicasting towards RBSs, runs with DCH application ET Boards – Exchange Terminal Board - The following are different versions of the ET boards that implement adaptations to different physical media and transmission standards: - 155 Mbps (STM-1 and OC3c), optical link – ET-MF4 - 155 Mbps (STM-1 and OC3c), channelized (VC-11 and VC-12) optical link — ET- MF41 - 1 Gbit Ethernet. The board also serves as an ATM to Ethernet gateway — ET-IPG - 10Gbit Ethernet (eight Ethernet ports on front panel) The board is also used for high capacity connections between subracks — CMXB The CMXB is an Ethernet switch board used both for internal and external transport in the RNC and for all external IP traffic. The board is equipped with twelve 10G ports in the backplane for internal communication between boards in the subrack, and eight 10G ports in the front for inter-subrack communication through Ethernet Subrack Links (ESL). CMXB
  10. 10. 6.1 Iu The Iu is the interface between the RNC and Circuit-Switched (CS) or Packet-Switched (PS) CN. The Radio Access Network Application Part (RANAP) protocol is used for traffic-related control signalling to the CS and PS CN, and for GTP-U protocols to the PS CN. User plane and signalling over Iu may use ATM or IP. 6.2 Iur The Iur is the interface between two RNCs. This interface carries the Radio Network Subsystem Application Part (RNSAP), used for traffic-related control signalling. For user data, Frame Protocols are used. User plane and signalling over Iur may use ATM or IP). 6.3 Iub The Iub is the interface between the RNC and an RBS. This includes the Node B Application Part (NBAP), used for traffic related control signalling. For user data, Frame Protocols are used. User plane and signalling for an RBS may use either ATM or IP. 6.4 Uu The Uu is the air interface between the UE and the network. The interface is divided into three layers and the different layers terminate in different nodes as follows: Layer 1 terminates partly in the RBS and partly in the RNC. Layer 2 terminates mainly in the RNC. Layer 3 terminates mainly in the RNC, but with many messages are transparently transferred between the UE and the CN by the RNC. Broadcast Channel (BCH) terminates in the RBS. 6.5 Mur The Mur management interface provides element and network management of the RNC. Users of the interface
  11. 11. THANKS (By- Amitabh Panda) (NESA CIRCLE)

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