vmux-400
DESCRIPTION
pptTRANSCRIPT
RAD International Technical Seminar May 2007
Presented by:
CBNetworks
Technical Support
http://www.cbnetworks.fr
Abis & Ater Optimization
Abis & Ater Gateway TS-2007 Slide 2http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 3http://www.cbnetworks.fr - [email protected]
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 costsConnectivity optimization reduces costs
Abis & Ater Gateway TS-2007 Slide 4http://www.cbnetworks.fr - [email protected]
GSM Network Architecture
PSTNMSC
HLR VLR
BSCBTS
BSC
BSC
E(PCM)Vmux-2100/Gmux-2000
Interface:Solution:
A(PCM) / Ater*Vmux-2100 / 420*
Abis
BTS – Base Transceiver Station BSC – 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
BTS
BTS
BTS
BTS
BTS
BTS
BTS
Abis & Ater Gateway TS-2007 Slide 5http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 6http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 7http://www.cbnetworks.fr - [email protected]
• 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 …
Vmux-400 – Features
(NEW)
Abis & Ater Gateway TS-2007 Slide 8http://www.cbnetworks.fr - [email protected]
• 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
Abis & Ater Gateway TS-2007 Slide 9http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 10http://www.cbnetworks.fr - [email protected]
Vmux-400/420 Management
User terminal
ConfiguRAD
Telnet
RV-LITE + SNMP traps
Abis & Ater Gateway TS-2007 Slide 11http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 12http://www.cbnetworks.fr - [email protected]
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
Vmux-400/420
Optimization
FROM
BSC
(MSC)
1
Abis & Ater Gateway TS-2007 Slide 13http://www.cbnetworks.fr - [email protected]
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
Optimized + Compressed Data
BTS
ABIS / ATER Compressed Voice
Vmux-400/420
Vmux-400/420
Optimization Data Compression
1 2
Abis & Ater Gateway TS-2007 Slide 14http://www.cbnetworks.fr - [email protected]
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 timeslotsPer Vmux-400 *
* Current H.W. limitation (there is no limitation for the Vmux-420)
Abis & Ater Gateway TS-2007 Slide 15http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 16http://www.cbnetworks.fr - [email protected]
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\IPNetwork
ADAPTIVE = ENABLE
For IP uplink
ADAPTIVE = ENABLE
For IP uplink
Abis & Ater Gateway TS-2007 Slide 17http://www.cbnetworks.fr - [email protected]
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)
BSCBTS
(LBT) )Clk Source(
Internal RCV (Ingress)
Vmux-400/OCXO
ADAPTIVE = DISABLE ADAPTIVE = DISABLEIP network
Vmux-400/420
* Only needed on the BTS side
Abis & Ater Gateway TS-2007 Slide 18http://www.cbnetworks.fr - [email protected]
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• Signaling Rate Detection
• Vmux-400/420 can automatically detect the data rate of the signaling channels (16, 32 or 64Kbps)
BeforeBefore Vmux- 400/420 detects signaling channels rate
AfterAfter 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 DynamicAll set to Dynamic
Abis & Ater Gateway TS-2007 Slide 19http://www.cbnetworks.fr - [email protected]
Timeslot Type Detection (Ericsson)
• Timeslot Type Detection (EricssonEricsson)
• 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 DynamicAll set to Dynamic
After Vmux-400/420 detects timeslots type
Abis & Ater Gateway TS-2007 Slide 20http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 21http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 22http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 23http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 24http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 25http://www.cbnetworks.fr - [email protected]
Vmux-4.xx Configurator Tool:Vmux-400/420 Configuration tool
Vmux-400 Configuration guide
Try it in workshopTry it in workshop
Available at: http://www.cbnetworks.fr/ftp/rad/outils/ InfoCenter Technical Resources
1. Site survey
2. Configuration
3. Bandwidth estimation
Configuration Tool
Abis & Ater Gateway TS-2007 Slide 26http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 27http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 28http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 29http://www.cbnetworks.fr - [email protected]
Vmux-400 Interoperability
• Interoperable with all major vendors:
Ericsson, Siemens, Nokia, Alcatel-Ericsson, Siemens, Nokia, Alcatel-
Lucent, Huawei, Motorola, Nortel, …Lucent, Huawei, Motorola, Nortel, …
Vmux-400/420
Abis & Ater Gateway TS-2007 Slide 30http://www.cbnetworks.fr - [email protected]
Agenda
• Background
• Vmux-400/420 features
• How does it work?
• Vmux-4.xx Configurator Tool
• Statistics
• Interoperability
• Applications
Abis & Ater Gateway TS-2007 Slide 31http://www.cbnetworks.fr - [email protected]
ETH/IPVmux-400
Central Office
MSC BSC
E1s
HubTransceivers
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
Abis & Ater Gateway TS-2007 Slide 32http://www.cbnetworks.fr - [email protected]
ETH/IP
Vmux-420
Central Office
MSC BSC
E1s
HubTransceivers
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
Abis & Ater Gateway TS-2007 Slide 33http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 34http://www.cbnetworks.fr - [email protected]
for your attentionthank you
• Technical Support
• http://www.cbnetworks.fr
Abis & Ater Gateway TS-2007 Slide 35http://www.cbnetworks.fr - [email protected]
Abis & Ater Gateway TS-2007 Slide 36http://www.cbnetworks.fr - [email protected]
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
Abis & Ater Gateway TS-2007 Slide 37http://www.cbnetworks.fr - [email protected]
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
ControlPort
* Ordering Options: - 4,8 or 12 Ingress E1 ports- 2,4 or 6 Egress E1 ports
Alarm Relay
ETH Management
port
Abis & Ater Gateway TS-2007 Slide 38http://www.cbnetworks.fr - [email protected]
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)
Abis & Ater Gateway TS-2007 Slide 39http://www.cbnetworks.fr - [email protected]
Ericsson Time Slot ConfigurationBSC/BTS Configuration:(10.5 x TRX, 84 GSM speech channels)CH Content
1 TRXC SIGNAL2 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA3 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA4 IDLE5 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA6 IDLE7 IDLE8 IDLE9 IDLE
10 IDLE11 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA12 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA13 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA14 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA15 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA16 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA17 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA18 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA19 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA20 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA21 TRXC SIGNAL22 IDLE23 IDLE24 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA25 IDLE26 IDLE27 IDLE28 IDLE29 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA30 CF/TRXC SIGNAL31 MPLEX16 MPLEX16 MPLEX16 MPLEX16 SPEECH/DATA
CONC
UNDEFUNDEFUNDEF
UNDEFUNDEF
Sub Channel
CONC
UNDEF
UNDEFUNDEF
CONC
UNDEFUNDEF
UNDEFUNDEF
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.
Abis & Ater Gateway TS-2007 Slide 40http://www.cbnetworks.fr - [email protected]
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 Number of seconds accumulated for each accumulated for each
bandwidth rangebandwidth range
Number of seconds Number of seconds accumulated for each accumulated for each
bandwidth rangebandwidth range
Abis & Ater Gateway TS-2007 Slide 41http://www.cbnetworks.fr - [email protected]
Vmux-400MSC BSCE1s Serial/
IP/E1
E1
Serial/IP/E1Vmux-400
BTSE1
Mobile Platforms
• Supply service to mobile platforms such as cruise ships
Abis & Ater Gateway TS-2007 Slide 42http://www.cbnetworks.fr - [email protected]
Vmux-400MSC BSCE1s Serial/
IP/E1
E1
Serial/IP/E1Vmux-400
BTSE1
Mobile Platforms
• Supply service in large and crowded events using trucks
Abis & Ater Gateway TS-2007 Slide 43http://www.cbnetworks.fr - [email protected]
Terrestrial Daisy – Chained BTS’s
• Requires Drop & Insert capability at the BTS
• Suitable when each BTS serves a small area
Vmux-400E1
MSC BSCE1s E1
TDM or IP
BTS
BTS
BTS
E1
FE1
FE1
FE1
BTS
BTS
BTS
DXC
FE1
FE1
Vmux-400 / 420