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May 2007 Presented by: CBNetworks Technical Support Abis & Ater Optimization.

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Presentation on theme: "May 2007 Presented by: CBNetworks Technical Support Abis & Ater Optimization."— Presentation transcript:

1 May 2007 Presented by: CBNetworks Technical Support Abis & Ater Optimization

2 Abis & Ater Gateway TS-2007 Slide 2 - Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

3 Abis & Ater Gateway TS-2007 Slide 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 operators 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 Abis & Ater Gateway TS-2007 Slide 4 - GSM Network Architecture PSTN MSC HLR VLR BSC BTS BSC E(PCM) Vmux-2100/ Gmux-2000 Interface: Solution: A(PCM) / Ater* Vmux-2100 / 420* Abis BTS – Base Transceiver StationBSC – Base Station Controller(= BSS) MSC – Mobile Switching Centre HLR & VLR – Home & Visitor Location Registers *Depends on the GSM Transcoder location: - if located at MSC Ater (Vmux-420) - if located at BSC A Interface (Vmux-2100/Gmux-2000) MSC Vmux-400/420 BTS

5 Abis & Ater Gateway TS-2007 Slide 5 - Optimization and not Compression Abis Optimized data BSC BTS ABIS/ ATER contains: 1.Compressed voice 2.Idle channels 3.Silence within active calls 4.Signaling + headers [ = overhead] 5.Data (such as GPRS / EDGE) Ater

6 Abis & Ater Gateway TS-2007 Slide 6 - Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

7 Abis & Ater Gateway TS-2007 Slide 7 - 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 …Bandwidth CalculatorConfigurator Vmux-400 – Features (NEW)

8 Abis & Ater Gateway TS-2007 Slide 8 - 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 Vmux-420 (Beta) – Features

9 Abis & Ater Gateway TS-2007 Slide 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 Abis & Ater Gateway TS-2007 Slide Vmux-400/420 Management User terminal ConfiguRAD Telnet RV-LITE + SNMP traps

11 Abis & Ater Gateway TS-2007 Slide Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

12 Abis & Ater Gateway TS-2007 Slide Operation Optimization process 1.Suppress Idle channels 2.Suppress traffic when there are Silence frames within active calls* 3.Remove Signaling HDLC flags (only valid signaling is transferred) Suppress signaling FISU & LSSU (ATER segment only) (* when DTX mode is active in the GSM network) Optimized Data BTS (/BSC) ABIS (/ ATER) Compressed Voice Vmux-400/420 Optimization FROM BSC (MSC) 1

13 Abis & Ater Gateway TS-2007 Slide 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 % 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 Optimized + Compressed Data BTS ABIS / ATER Compressed Voice Vmux-400/420 Optimization Data Compression 1 2

14 Abis & Ater Gateway TS-2007 Slide 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) Up to 24 timeslots Per Vmux-400 * * Current H.W. limitation (there is no limitation for the Vmux-420)

15 Abis & Ater Gateway TS-2007 Slide 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 Abis & Ater Gateway TS-2007 Slide Clocking over TDM/IP Link Clock transferred from BSC to BTS over any transmission network (Adaptive clock recovery mechanism enables to transfer the clock over ETH/IP – unique feature!) BSCBTS (LBT)(Clk Source) RCV (Uplink) RCV (Ingress) Vmux-400 Vmux-400/420 TDM\IP Network ADAPTIVE = ENABLE For IP uplink ADAPTIVE = ENABLE For IP uplink

17 Abis & Ater Gateway TS-2007 Slide 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) BSC BTS (LBT)(Clk Source) Internal RCV (Ingress) Vmux-400/ OCXO ADAPTIVE = DISABLE IP network Vmux-400/420 * Only needed on the BTS side

18 Abis & Ater Gateway TS-2007 Slide 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 Signaling Rate Detection Vmux-400/420 can automatically detect the data rate of the signaling channels (16, 32 or 64Kbps) Before Before Vmux- 400/420 detects signaling channels rate After 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 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 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 Abis & Ater Gateway TS-2007 Slide Timeslot Type Detection (Ericsson) EricssonTimeslot 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). 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 Before 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 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 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 After Vmux-400/420 detects timeslots type

20 Abis & Ater Gateway TS-2007 Slide Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

21 Abis & Ater Gateway TS-2007 Slide 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 1.Site survey 2.Configuration 3.Bandwidth estimation Configuration Tool

22 Abis & Ater Gateway TS-2007 Slide Vmux-4.xx Configurator Tool: Step 2 2. Configuration parameters Configure device according to the information we got from the survey. 1.Site survey 2.Configuration 3.Bandwidth estimation Configuration Tool

23 Abis & Ater Gateway TS-2007 Slide 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 EXAMPLE: Alcatel Time Slot Configuration 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 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 1.Site survey 2.Configuration 3.Bandwidth estimation Configuration Tool

24 Abis & Ater Gateway TS-2007 Slide 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 1.Site survey 2.Configuration 3.Bandwidth estimation Configuration Tool

25 Abis & Ater Gateway TS-2007 Slide Vmux-4.xx Configurator Tool: Vmux-400/420 Configuration tool Vmux-400 Configuration guide Try it in workshop Available at: InfoCenter Technical Resourceshttp://www.cbnetworks.fr/ftp/rad/outils/ 1.Site survey 2.Configuration 3.Bandwidth estimation Configuration Tool

26 Abis & Ater Gateway TS-2007 Slide Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

27 Abis & Ater Gateway TS-2007 Slide 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 Abis & Ater Gateway TS-2007 Slide Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

29 Abis & Ater Gateway TS-2007 Slide Vmux-400 Interoperability Interoperable with all major vendors: Ericsson, Siemens, Nokia, Alcatel- Lucent, Huawei, Motorola, Nortel, … Vmux-400/420

30 Abis & Ater Gateway TS-2007 Slide Agenda Background Vmux-400/420 features How does it work? Vmux-4.xx Configurator Tool Statistics Interoperability Applications

31 Abis & Ater Gateway TS-2007 Slide ETH/IP Vmux-400 Central Office MSCBSC E1s Hub Transceivers E1 Vmux-400 E1 Remote Site ETH/ IP E1 Vmux-400 BTS Remote Site ETH/ IP E1 Vmux-400 BTS GSM Service to Remote / Rural Regions Connection via satellite, microwave, terrestrial links, flexible interfacing (IP/ETH/SERIAL/E1) Effective solution where the cellular operator pays for expensive transmission links Central site solution is needed

32 Abis & Ater Gateway TS-2007 Slide ETH/IP Vmux-420 Central Office MSCBSC E1s Hub Transceivers Up to 12 E1 Remote Site ETH/ IP E1 Vmux-400 BTS Remote Site ETH/ IP E1 Vmux-400 BTS GSM Service to Remote / Rural Regions Connection via satellite, microwave, terrestrial links, flexible interfacing (IP/ETH/SERIAL/E1) Effective solution where the cellular operator pays for expensive transmission links

33 Abis & Ater Gateway TS-2007 Slide 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 Abis & Ater Gateway TS-2007 Slide for your attention thank you Technical Support

35 Abis & Ater Gateway TS-2007 Slide

36 Abis & Ater Gateway TS-2007 Slide Vmux-400 Ports E1 Uplink (Egress/Output) to network User E1 Ports* (Ingress/Input) from BTS/BSC/MSC Serial Uplink (Egress/Output) to network ETH/IP Uplink (Egress/Output) to network ETH Management Control Port * Ordering Options: 1 or 2 ingress E1 ports

37 Abis & Ater Gateway TS-2007 Slide Vmux-420 Ports Up to 6 E1 Uplink (Egress/Output) to network Up to 12 User E1 Ports* (Ingress/Input) from BTS/BSC/MSC ETH/IP Uplink (Egress/Output) to network 2 Redundant Power supplies Control Port * Ordering Options: - 4,8 or 12 Ingress E1 ports - 2,4 or 6 Egress E1 ports Alarm Relay ETH Management port

38 Abis & Ater Gateway TS-2007 Slide 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 Abis & Ater Gateway TS-2007 Slide 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? 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 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 TS1, 21, 30 : Sig64 TS2, 3, 5, 11-20, 24, 29, 31 : TRAU TS4, 6-10, 22-23, 25-28: : N/C.

40 Abis & Ater Gateway TS-2007 Slide Statistics: BW Utilization Statistics Vmux400 / BSC ALRM Display Total Accumulated [ < 64 Kbps]... (236024) [ Kbps]... (44) [ Kbps]... (5) [ Kbps]... (354) [ Kbps]... (314) [ Kbps]... (233) [ Kbps]... (1203) [ Kbps]... (23) [ Kbps]... (3455) [ Kbps]... (4) [ Kbps]... (14563) [ Kbps]... (0) [ Kbps]... (21003) [ Kbps]... (0) [ Kbps]... (13900) [ Kbps]... (4) [ Kbps]... (4231) [ Kbps]... (0) [ Kbps]... (911) [ Kbps]... (0) [ Kbps]... (43) [ Kbps]... (0)... (N) > Number of seconds accumulated for each bandwidth range

41 Abis & Ater Gateway TS-2007 Slide Vmux-400 MSCBSC E1s Serial/ IP/E1 E1 Serial/IP/E1 Vmux-400 BTS E1 Mobile Platforms Supply service to mobile platforms such as cruise ships

42 Abis & Ater Gateway TS-2007 Slide Vmux-400 MSCBSC E1s Serial/ IP/E1 E1 Serial/IP/E1 Vmux-400 BTS E1 Mobile Platforms Supply service in large and crowded events using trucks

43 Abis & Ater Gateway TS-2007 Slide Terrestrial Daisy – Chained BTSs Requires Drop & Insert capability at the BTS Suitable when each BTS serves a small area Vmux-400 E1 MSCBSC E1s E1 TDM or IP BTS E1 FE1 BTS DXC FE1 Vmux-400 / 420


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