1 / 43

Abis & Ater Optimization

Abis & Ater Optimization. Agenda. Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications. Optimization Market Needs. Market potential: 1 Billion potential cellular subscribers in GSM rural areas (Nokia Chairman)

nhu
Download Presentation

Abis & Ater Optimization

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Abis & Ater Optimization

  2. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  3. Optimization Market Needs Market potential: • 1 Billion potential cellular subscribers in GSM rural areas (Nokia Chairman) • Cellular backhaul relies on leased lines, private networks and satellite connections • Backhaul costs reach 40-60% of the operator’s OpEx • 2.5G / 3G services and mobile users increase incurs additional network investments (optimized 2G leased lines can be transferred to 3G networks) Connectivity optimization reduces costs

  4. BTS BTS BTS BTS BTS BTS BTS BTS GSM Network Architecture Interface: E(PCM) A(PCM) / Ater* Abis Solution: Vmux-2100/ Gmux-2000 Vmux-2100 / 420* Vmux-400/420 BSC BTS PSTN MSC BSC MSC BSC HLR VLR • *Depends on the GSM Transcoder location: • if located at MSC  Ater (Vmux-420) • if located at BSC  A Interface (Vmux-2100/Gmux-2000) BTS – Base Transceiver Station BSC – Base Station Controller (= BSS) MSC – Mobile Switching Centre HLR & VLR – Home & Visitor Location Registers

  5. Optimization and not Compression BSC Optimized data Ater Abis BTS • ABIS/ ATERcontains: • Compressed voice • Idle channels • Silence within active calls • Signaling + headers [ = overhead] • Data (such as GPRS / EDGE)

  6. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  7. Vmux-400 – Features • Average Optimization: Up to 3:1 (fractional uplink) • User Input: 1 or 2xE1/T1 (ordering option) • Uplink Interfaces: E1/T1, ETH/IP, Serial (all built-in) • Clocking: Clock is transferred even when using ETH/IP uplink • Power Options: AC/DC • Data compression: Compresses ~ 10% - 15% more during peak hours (License is needed) • Point to Multipoint (using bundles) • Voice CODECs • Interoperability with all Major vendors • Tools, such as Bandwidth Calculator, Configurator … (NEW)

  8. Vmux-420 (Beta) – Features • All Vmux-400 features (except Serial Uplink & T1) • User Input: Up to 12xE1 (4, 8, or 12 - ordering option) • Uplink Interfaces: Up to 6xE1 or ETH/IP (all built-in) • Chassis:1U, 19” wide • Redundancy: full redundancy (Carrier Class Product) • Dry Contact Alarm Relay • TDM trunks aggregation (grooming) • Interoperability between Vmux-400 and Vmux-420

  9. Vmux-420 Back Panel • 2 Fully redundant Main Modules, in case of H.W malfunction • All ports connected to both Main Modules, supplying FULL redundancy

  10. Vmux-400/420 Management User terminal Telnet RV-LITE + SNMP traps ConfiguRAD

  11. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  12. Operation • Optimization process • Suppress Idle channels • Suppress traffic when there are Silence frames within active calls* • Remove Signaling HDLC flags (only valid signaling is transferred) • Suppress signaling FISU & LSSU (ATER segment only) Vmux-400/420 FROM BSC (MSC) Vmux-400/420 ABIS (/ ATER) Compressed Voice Optimized Data 1 BTS (/BSC) Optimization (* when DTX mode is active in the GSM network)

  13. Data Compression • How does it works? - The data compression unit accumulates information coming from the optimization unit and compresses it. The information is compressed similar to Zip a file in PC • Performance - Saves about 10 - 15% bandwidth during peak hours. - Higher performance when there is more Data traffic (GPRS / EDGE - up to 50%) - There are 2 compression levels: Normal level and High level. • Why “Data”? - The output from the optimization unit contains data and not voice - This is non-destructive compression. • Tradeoff for High Packet loss level - Sensitive to packet loss therefore it is only good for networks with low packet loss. • License dependant Vmux-400/420 Vmux-400/420 ABIS / ATER Compressed Voice Optimized + Compressed Data 1 2 BTS Data Compression Optimization

  14. Up to 24 timeslots Per Vmux-400 * Traffic Types Supported – VOICE Voice Codecs: • FR (Full Rate) • EFR (Enhanced Full Rate) • AMR (Adaptive Multi-Rate) • HR (Half Rate) • AMR-HR • Vmux-400/420 can automatically detect the GSM sub-channel rate (16kbps or 8kbps) * Current H.W. limitation (there is no limitation for the Vmux-420)

  15. Traffic Types Supported – DATA SMS / WAP: Transferred as part of the signaling channel. GPRS: CS* 1,2,3 and 4 transported over timeslots configured for TRAU traffic => BTS can use any TRAU timeslot to transmit GPRS EDGE: Transported over timeslots configured for TRANSPARENT. BTS must use a predefined set of timeslots for EDGE services *CS = Code Scheme

  16. Clocking over TDM/IP Link RCV (Ingress) RCV (Uplink) • Clock transferred from BSC to BTS over any transmission network (Adaptive clock recovery mechanism enables to transfer the clock over ETH/IP – unique feature!) TDM\IP Network Vmux-400 Vmux-400/420 ADAPTIVE = ENABLE For IP uplink ADAPTIVE = ENABLE For IP uplink BTS BSC (LBT) (Clk Source)

  17. RCV (Ingress) Internal Vmux-400/OCXO Vmux-400/420 IP network ADAPTIVE = DISABLE ADAPTIVE = DISABLE BSC BTS (LBT) (Clk Source) Clocking over Satellite IP Link • OCXO* (ordering option) for highly accurate internal oscillator operating at 2.048Mhz  0.5 ppm (use when IP network jitter is higher than 50 msec) * Only needed on the BTS side

  18. Signaling Rate Detection • Signaling Rate Detection • Vmux-400/420 can automatically detect the data rate of the signaling channels (16, 32 or 64Kbps) Before Vmux- 400/420 detects signaling channels rate After Vmux- 400/420 detects signaling channels rate Ts# Type Byte Bundle# Reversal 1 Dynamic Yes 1 2 Dynamic Yes 1 | 3 Dynamic Yes 1 v 4 Dynamic Yes 1 5 Dynamic Yes 1 6 Dynamic Yes 1 7 Dynamic Yes 1 8 Dynamic Yes 1 9 Dynamic Yes 1 10 Dynamic Yes 1 Ts# Type Byte Bundle# Reversal 1 Sig64 Yes 1 2 Sig64 Yes 1 | 3 Sig64 Yes 1 v 4 Dynamic Yes 1 5 Dynamic Yes 1 6 Dynamic Yes 1 7 Dynamic Yes 1 8 Dynamic Yes 1 9 Dynamic Yes 1 10 Dynamic Yes 1 • Available Time Slot Types: • TRAU: GSM Speech • Sig64/Sig32/Sig16: HDLC Signaling, 64/32/16 kbps • Trp64/Trp32/Trp16: Transparent data, 64/32/16 kbps All set to Dynamic

  19. Timeslot Type Detection (Ericsson) • Timeslot Type Detection (Ericsson) • After reboot, the Ericsson BSS changes timeslot assignment for speech and signaling. To support this Vmux-400/420 can automatically detect the timeslot type (speech or signaling). Before Vmux-400/420 detects timeslots type After Vmux-400/420 detects timeslots type Ts# Type Byte Bundle# Reversal 1 Dynamic Yes 1 2 Dynamic Yes 1 | 3 Dynamic Yes 1 v 4 Dynamic Yes 1 5 Dynamic Yes 1 6 Dynamic Yes 1 7 Dynamic Yes 1 8 Dynamic Yes 1 9 Dynamic Yes 1 10 Dynamic Yes 1 Ts# Type Byte Bundle# Reversal 1 Sig64 Yes 1 2 Sig64 Yes 1 | 3 Sig64 Yes 1 v 4 TRAU Yes 1 5 TRAU Yes 1 6 TRAU Yes 1 7 TRAU Yes 1 8 TRAU Yes 1 9 Dynamic Yes 1 10 Dynamic Yes 1 • Available Time Slot Types: • TRAU: GSM Speech • Sig64/Sig32/Sig16: HDLC Signaling, 64/32/16 kbps • Trp64/Trp32/Trp16: Transparent data, 64/32/16 kbps All set to Dynamic

  20. 1 3 2 Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  21. Site survey • Configuration • Bandwidth estimation • Configuration Tool Vmux-4.xx Configurator Tool:Step 1 1. Site survey • Collecting information from the mobile operator: • GSM segment: ATER/ ABIS • Vendor • Uplink type: TDM / IP • Timeslot assignment • Downstream DTX (y/n) • Clock transfer

  22. Site survey • Configuration • Bandwidth estimation • Configuration Tool Vmux-4.xx Configurator Tool:Step 2 2. Configuration parameters Configure device according to the information we got from the survey.

  23. Site survey • Configuration • Bandwidth estimation • Configuration Tool EXAMPLE:Alcatel Time Slot Configuration BSC/BTS Configuration: (6 x TRX, 48 GSM speech channels) Vmux-400 Time Slot Table: Display Time Slots Configuration Ts# Type Byte Reversal Bundle# 1 -- Yes 1 2 Sig64 Yes 1 | 3 TRAU Yes 1 v 4 TRAU Yes 1 5 Sig16 Yes 1 6 TRAU Yes 1 7 TRAU Yes 1 8 TRAU Yes 1 9 TRAU Yes 1 10 TRAU Yes 1 • Available Time Slot Types: • TRAU: GSM Speech • Sig64/Sig32/Sig16: HDLC Signaling, 64/32/16 kbps • Trp64/Trp32/Trp16: Transparent data, 64/32/16 kbps

  24. Site survey • Configuration • Bandwidth estimation • Configuration Tool Vmux-4.xx Configurator Tool:Step 3 3. Bandwidth considerations • Bandwidth is influenced by the following parameters: • Fixed • Timeslot assignment • Uplink type (IP or TDM) • Using Downstream DTX. • Estimated • Estimated silence within calls • Estimated idle channels

  25. Site survey • Configuration • Bandwidth estimation • Configuration Tool Vmux-4.xx Configurator Tool: Vmux-400/420 Configuration tool  Vmux-400 Configuration guide Try it in workshop Available at: http://www.cbnetworks.fr/ftp/rad/outils/ InfoCenter  Technical Resources

  26. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  27. Statistics • Uplink statistics: TDM/Serial/Ethernet uplink:Evaluate bandwidth on uplink • Signaling statistics:Verify signaling channels are up • TRAU statistics:TRAU traffic analyzing • Bandwidth control statistics:Display calls stopped or discarded • BW utilization statistics:Display enhanced information on bandwidth consumption

  28. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  29. Vmux-400 Interoperability • Interoperable with all major vendors: Ericsson, Siemens, Nokia, Alcatel-Lucent, Huawei, Motorola, Nortel, … Vmux-400/420

  30. Agenda • Background • Vmux-400/420 features • How does it work? • Vmux-4.xx Configurator Tool • Statistics • Interoperability • Applications

  31. Central site solution is needed GSM Service to Remote / Rural Regions Remote Site • Connection via satellite, microwave, terrestrial links, flexible interfacing (IP/ETH/SERIAL/E1) • Effective solution where the cellular operator pays for expensive transmission links Central Office Vmux-400 ETH/ IP E1 ETH/IP BTS MSC BSC Vmux-400 E1s E1 Hub Transceivers Remote Site E1 Vmux-400 Vmux-400 ETH/ IP E1 BTS

  32. GSM Service to Remote / Rural Regions Remote Site • Connection via satellite, microwave, terrestrial links, flexible interfacing (IP/ETH/SERIAL/E1) • Effective solution where the cellular operator pays for expensive transmission links Central Office Vmux-400 ETH/ IP E1 BTS MSC BSC Vmux-420 E1s Hub Transceivers Remote Site ETH/IP Up to 12 E1 Vmux-400 ETH/ IP E1 BTS

  33. Summary • RAD offers a full MSC-BSC-BTS cellular backhaul solution • Cost effective voice optimization solution for central and remote sites • Up to 3:1 optimization of Abis/ Ater interface • Up to 10% - 15% saving with Data Compression • Connects over any uplink • Interoperable with all major vendors

  34. thank you for your attention • Technical Support • support.technique@cbnetworks.fr • http://www.cbnetworks.fr

  35. Supplementary Slides

  36. Vmux-400 Ports Control Port Serial Uplink (Egress/Output)  to network E1 Uplink (Egress/Output)  to network ETH Management ETH/IP Uplink (Egress/Output)  to network User E1 Ports* (Ingress/Input)  from BTS/BSC/MSC * Ordering Options: 1 or 2 ingress E1 ports

  37. Vmux-420 Ports Up to 6 E1 Uplink (Egress/Output)  to network Control Port Up to 12 User E1 Ports* (Ingress/Input)  from BTS/BSC/MSC 2 Redundant Power supplies ETH Management port Alarm Relay ETH/IP Uplink (Egress/Output)  to network * Ordering Options: - 4,8 or 12 Ingress E1 ports - 2,4 or 6 Egress E1 ports

  38. GSM Subchannel Rate Detection GSM Subchannel Rate Detection • Full Rate (FR): Each voice channel is carried in a 16 kbps sub channel • Half Rate (HR): Each voice channel is carried in a 8 kbps sub channel • Vmux-400/420 can automatically detect the GSM subchannel rate (16 kbps or 8 kbps)

  39. Ericsson Time Slot Configuration BSC/BTS Configuration: (10.5 x TRX, 84 GSM speech channels) How to configure Vmux-4.xx according to the timeslots table? • TS1, 21, 30 : Sig64 • TS2, 3, 5, 11-20, 24, 29, 31 : TRAU • TS4, 6-10, 22-23, 25-28: : N/C. • Available Time Slot Types: • TRAU: GSM Speech • Sig64/Sig32/Sig16: HDLC Signaling, 64/32/16 kbps • Trp64/Trp32/Trp16: Transparent data, 64/32/16 kbps

  40. Statistics: BW Utilization Statistics Vmux400 / BSC ALRM Display Total Accumulated [ < 64 Kbps] ... (236024) [704 -767 Kbps] ... (44) [ 64 -127 Kbps] ... (5) [768 -831 Kbps] ... (354) [128 -191 Kbps] ... (314) [832 -895 Kbps] ... (233) [192 -255 Kbps] ... (1203) [896 -959 Kbps] ... (23) [256 -319 Kbps] ... (3455) [960 -1023 Kbps] ... (4) [320 -383 Kbps] ... (14563) [1024-1087 Kbps] ... (0) [384 -447 Kbps] ... (21003) [1088-1151 Kbps] ... (0) [448 -511 Kbps] ... (13900) [1152-1215 Kbps] ... (4) [512 -575 Kbps] ... (4231) [1216-1279 Kbps] ... (0) [576 -639 Kbps] ... (911) [1280-1343 Kbps] ... (0) [640 -703 Kbps] ... (43) [1344-1407 Kbps] ... (0) ... (N) > Number of seconds accumulated for each bandwidth range

  41. Mobile Platforms • Supply service to mobile platforms such as cruise ships MSC BSC Vmux-400 Vmux-400 Serial/ IP/E1 E1s Serial/IP/E1 E1 E1 BTS

  42. Mobile Platforms • Supply service in large and crowded events using trucks MSC BSC Vmux-400 Vmux-400 Serial/ IP/E1 E1s Serial/IP/E1 E1 E1 BTS

  43. BTS BTS BTS BTS BTS BTS Terrestrial Daisy – Chained BTS’s • Requires Drop & Insert capability at the BTS • Suitable when each BTS serves a small area FE1 FE1 MSC BSC Vmux-400 / 420 Vmux-400 E1s E1 E1 TDM or IP E1 FE1 DXC FE1 FE1

More Related