Gateway Configuration

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Cameron Garrison
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the CEC 30.06.2007 Actual Date of Delivery to the CEC 30.06.2007 Author(s) Participant(s) Workpackage Dissemination Level Nature J.

1 SIXTH FRAMEWORK PROGRAMME Integrated Multi-layer Optimization in broadband DVB-S.2 SAtellite Networks FP First part: Gateway Configuration Contractual Date of Delivery to the CEC Actual Date of Delivery to the CEC Author(s) Participant(s) Workpackage Dissemination Level Nature J. Mouëza CNES WP3 Public Report Version 1.0 Total number of pages 41 Page 1 of 41

2 Table of Contents 1. INTRODUCTION GLOSSARY AND ABBREVIATIONS PLATFORM DESCRIPTION ECPS CONFIGURATION...7 NOISE GENERATORS CONFIGURATION LINK BUDGETS AND FREQUENCY PLAN FORWARD LINK CHARACTERISTICS In loop back mode Trial with the satellite RETURN LINK CHARACTERISTICS In loop back mode On-air trial over the satellite GTEM OVERVIEW TRUNK CONFIGURATION SATELLITE LINK CONFIGURATION FORWARD LINK CONFIGURATION FLT CONFIGURATION SATELLITE RETURN LINK CONFIGURATION SUPERFRAMES CONFIGURATION FHB CONFIGURATION BMD MAPPING CONFIGURATION SATELLITE CONFIGURATION SATELLITE TERMINALS CONFIGURATION IN LOOP BACK MODE OVER THE SATELLITE SERVICES PROFILES CONFIGURATION SUBSCRIBERS CONFIGURATIONS SERVICE PROVIDER CONFIGURATION CONCLUSION Page 2 of 41

3 1. Introduction The present document is the configuration description of the Gateway A9780 R2 and its Satellite Terminal installed in CNES premises and used for the IMOSAN project. The Gateway version is the R21.3 upgraded to DVB-S2. Actually, in this version, the TCP/HTTP PEP accelerator is not activated, and only the DVB-S2 CCM mode is available. The gateway is configured in order to prepare the integration and validation activities of the modules developed in the frame of the IMOSAN project, and to test its performance using triple play services. The major tests and services demonstration are realized without satellite. The gateway is connected to one Satellite Terminal in Loop Back Mode, using equipment IF frequency band. In order to simulate the perturbations subjected to an RF signal propagating in the atmosphere and in space, a Propagation Channel Emulator (ECP) is inserted in the loop to simulate the real satellite. So the delay, noise level, attenuation and gain parameters can be adjusted relating to the desired propagation conditions. The ECP was developed by S.M.P (SYSTEMES MIDI PYRENEES) on behalf of CNES. The next chapters present the Gateway description in loop back mode and in trial with satellite. The IDU Terminal configuration is also described (chapter 9) both in loop back mode and during on-air trials, from the Gateway interface and from the Terminal Satellite menus. Page 3 of 41

4 2. Glossary and Abbreviations B BMD Burst Mode Demodulator BUC Block Up Converter BW Bandwidth C CCM Constant Coding and Modulation E ECP Propagation Channel Emulator F FEC Forward Error Correction FHB Frequency Hopping Bandwidth FL Forward Link FLT Forward Link Transmitter G GTEM Gateway and Terminal Equipment Manager GUI Graphical User Interface I ID IDentifier IDU In Door Unit IF Intermediate Frequency L LAN Local Array Network LNB Low Noise Block O OL Local Oscillator P PEP Performance Enhancing Proxy R RF Radio frequency RL Return Link Rx Receive S ST Satellite Terminal T Tx Transmit Page 4 of 41

3. Platform Description This part describes the platform composed with the gateway connected in loop back mode.

3 upgraded in DVB-S2 The gateway network: the Gateway router provides a LAN access to PCs, servers (VoIP server, FTP server) and a Visio conference system.

The Satellite Terminal LAN: the Satellite Terminal IDU provides a LAN access to PC Clients and FTP/HTTP clients.

One Spectrum Analyser allowing monitoring the Rx signal (DVB-RCS) received by the BMD and the Rx signal received by the ST IDU demodulator (DVB-S2 signal).

5 3. Platform Description This part describes the platform composed with the gateway connected in loop back mode.the platform is composed of the following components: The Gateway (the hub): Version: R21.3 upgraded in DVB-S2 The gateway network: the Gateway router provides a LAN access to PCs, servers (VoIP server, FTP server) and a Visio conference system. The Satellite Terminal: SNT S4100 ADVANTECH Manufacturer: software version 4001R03. The Satellite Terminal LAN: the Satellite Terminal IDU provides a LAN access to PC Clients and FTP/HTTP clients. The Satellite Emulator: it is composed of two ECPs connected in serial, and two noise generators allowing adjusting the noise level and attenuation via two distinct RF chains. One Spectrum Analyser allowing monitoring the Rx signal (DVB-RCS) received by the BMD and the Rx signal received by the ST IDU demodulator (DVB-S2 signal). The platform architecture is shown in the following figure: Serveur ToIP Asterisk VisioConf IP HUB Spitent Reflector 220 Serveurs FTP HTTP- Multicast FLT BMD - 10dBm 1,080GHz / 4-16dBm ECP1 ECP Routeur IP SNT Tx -24dBm 1,170GHz Analyseur Spectre / 2 / 2 GBruit1 GBruit2 Rx Routeur IP Émulateur de canal satellite Spitent Avalanche 220 Clients FTP HTTP- Multicast PC Client VisioConf IP Xlite Toip E-Pop Client Jperf Page 5 of 41

The EPC outputs are linked separately to the BMD and the IDU Demodulator, via two distinct noise generators.

6 The FLT and the IDU Transmission signals are sent to the ECP input. The Tx signals are affected by a delay and attenuation configured and adjusted with the ECPs. The EPC outputs are linked separately to the BMD and the IDU Demodulator, via two distinct noise generators. Here after is shown some pictures from the Satellite Emulator: Noise generator #1 Spectrum Analyser Noise generator #2 ECP_02 ECP_01 Satellite Emulator Spectrum Analyser displaying the DVB-S2 signal Page 6 of 41

3.1. ECPs Configuration The ECP_1 configuration is shown in the following table and displays: Input detected level : -16dBm AGC Back Off : 10dB First attenuation manual

7 3.1. ECPs Configuration The ECP_1 configuration is shown in the following table and displays: Input detected level : -16dBm AGC Back Off : 10dB First attenuation manual configuration: 20dB Second attenuation auto configuration: 0dB Channel propagation Amplification: +3dB ECP_01 Configuration Table ECP_01 AGC screen display Page 7 of 41

8 ECP_01 Channel Propagation screen display The ECP_2 configuration is shown in the following table and displays: Input detected level : -16dBm AGC Back Off : 10dB First attenuation manual configuration: 32 db Second attenuation auto configuration: 0dB Channel propagation Amplification: +3dB ECP_02 Configuration Table Page 8 of 41

9 ECP_02 AGC screen display ECP_02 Channel Propagation screen display Page 9 of 41

10 3.2. Noise Generators Configuration The two noise generators are configured to insert AWG Noise at the following levels: Noise generator#1 level = -18 dbm Noise generator#2 level = -14 dbm Page 10 of 41

11 4. Link Budgets and Frequency Plan Two different frequency plans and configuration parameters are used with the satellite and the loop back configurations. With the satellite, the total bandwidth allocated for IMOSAN project is 6 MHz from transponder capacity. This bandwidth is shared between the forward link and the return link resources as described below: Total Allocated BW 6 Uplink Center Freq Downlink Center Freq IMOSAN Frequency Plan (in MHz) 4.1. Forward Link Characteristics In loop back mode In loop back mode, the following Forward Link configuration is used: Downlink Forward Center Frequency MHz Forward bandwidth 3.75 MHz Modulation/FEC DVB-S2 QPSK 3/5 Symbol Rate 3 Mbaud Roll Off factor 0.25 Polarization Vertical DVB-S2 Pilot No DVB-S2 frame Normal Efficiency 1.14 bit/sec/symb Spectral efficiency Forward Link Characteristics Table The choice of the frequency is taken in relation with the ECP frequency tuning Trial with the satellite With the satellite, the following Forward Link frequency plan is considered: Max. Allocated FL BW 4 FL start freq FL Uplink Center Freq FL End Freq Forward Link Frequency plan (in MHz) Page 11 of 41

12 BW 3,75 Start freq 14056,125 Uplink Center freq End freq 14059,875 OL BUC Start Uplink IF 1393,875 Uplink Center IF 1392 End Uplink IF 1390,125 OL F2H02 Channel 3050 Start Downlink freq 11006,125 Downlink Center freq End Downlink freq 11009,875 OL LNB Start Downlink IF 1006,125 Downlink Center IF 1008 End Downlink IF 1009,875 DVB-S2 Forward Link (in MHz) The Forward configuration is described in the following table: Modulation/FEC DVB-S2 QPSK 2/3 Downlink Forward Center frequency MHz Symbol Rate 3 Mbaud Roll Off factor 0.25 Polarization Vertical DVB-S2 Pilot No DVB-S2 frame Normal 4.2. Return Link Characteristics In loop back mode Return Link Start Frequency MHz Roll Off factor 0.35 Polarization Horizontal Forward Link Characteristics Table On-air trial over the satellite Max. Allocated RL BW 1 RL start Freq RL Uplink Center Freq 14061,5 RL End Freq Return Link (in MHz) Page 12 of 41

13 BW 0,1769 Start freq Uplink Center freq 14061,08845 End freq 14061,17690 OL BUC Start Uplink FI 1011 Uplink Center FI 1011,08845 End Uplink FI 1011,17690 OL F2H02 Channel 3050 Start Downlink freq Downlink Center freq 11011,08845 End Downlink freq 11011,17690 OL LNB Start Downlink FI 1011 Downlink Center FI 1011,08845 End Downlink FI 1011,17690 DVB-RCS Return Link CSC Burst (Logon) BW 0,6931 Start freq 14061,17690 Uplink Center freq 14061,52345 End freq 14061,87000 OL BUC Start Uplink FI 1011,17690 Uplink Center FI 1011,52345 End Uplink FI 1011,87000 OL F2H02 Channel 3050 Start Downlink freq 11011,17690 Downlink Center freq 11011,52345 End Downlink freq 11011,87000 OL LNB Start Downlink FI 1011,17690 Downlink Center FI 1011,52345 End Downlink FI 1011,87000 DVB-RCS Return Link TRF Burst (Traffic) Page 13 of 41

14 5. GTEM overview The GTEM (Gateway and Terminal Equipment Manager) is dedicated to the management of the A9780 R2 Gateway.It is involved in the supervision and configuration of all the Gateway elements. The GTEM provides to the gateway operator capabilities for switching between supervision, configuration and performance operations. The GTEM allows to easily link the subscriber with resources, service profile, service provider and terminal. The different displays showing the various gateway configuration parameters are printed screens from GTEM. Page 14 of 41

15 6. Trunk Configuration The satellite trunk allows the management of the physical resources into Logical resources. The trunk defines a maximum forward and return data rate. The Gateway segments each Superframe in FHB (Frequency Hopping Bandwidth). The FHB is a gateway scheduling tool used to assign time-slots to Satellite Terminal. The satellite terminal has a specific frequency range for frequency hopping from Time-slot to Time-slot refered as the Frequency Hopping Range. This Frequency Hopping Range corresponds to Terminal maximum data rate. Some information is described in the following table to define trunk parameters in the GTEM: Parameters Description Value Forward Capacity - Physical Forward Link Capacity Forward Link Total Capacity Forward Link Guaranteed Assigned FHB Automatically computed according to Satellite Forward Link Automatically computed Automatically computed Two FHB are defined 4000 kbps in loop back mode 3000 kbps with satellite 4000 kbps 4000 kbps in loop back mode 3000 kbps with satellite 4000 kbps in loop back mode 3000 kbps with satellite FHB#0 FHB#1 Physical Return Link Capacity kbps Return Link Total Capacity kbps Return Link Guaranteed kbps Satellite Trunk Parameters Table In the Return Link, two assigned FHB are defined as describes bellows: FHB#0 bandwidth is equal to MHz; it corresponds to FHB reserved for the terminal logon carrier (CSC carrier). FHB#1 bandwidth is equal to MHz; it corresponds to FHB reserved for the terminal traffic carrier (TRF carrier). Page 15 of 41

16 Satellite Trunk Configuration in loop back mode Page 16 of 41

17 7. Satellite Link Configuration 7.1. Forward Link Configuration The following table summarises the configuration of the forward link: Parameters Value Symbol rate 3 Mbauds Bandwidth 3.75 MHz IF L Band Frequency (IF 1080 MHz (in loop back mode) frequency for the output of 1392 MHz (with satellite) the modulator) Downlink Frequency MHz (in loop back mode) MHz (with satellite) Roll Off 0.25 Polarization Vertical FEC inner DVB-S2 QPSK 3/5 (in loop back mode) DVB-S2 QPSK 2/3 (with satellite) DVB-S2 Mode CCM Forward Link Parameters Table The following displays show the Forward Link Parameters Configuration in loop back mode: Page 17 of 41

18 Editing of Forward Link Parameters Editing of Forward Link Parameters Page 18 of 41

19 7.2. FLT Configuration The FLT output power is configured to -30 dbm. The rest of the FLT parameters configuration is shown in the following display: FLT Configuration 7.3. Satellite Return Link Configuration The following table describes the configuration of the Satellite Return Link: Parameters Value Bandwidth MHz MHz (in loop back mode) RF Start Frequency MHz (with satellite) Roll-Off 0.35 Polarization Horizontal 9529 Hz (in loop back mode) SRL Frequency Offset Correction 0 (with satellite) Satellite Return Link Parameters Table The following display shows the Satellite Return Link configuration in loop back mode: Page 19 of 41

20 Satellite Return Link Configuration The following table provides the SRL frame composition and its characteristics: Frame composition Data rate Symbol rate Bandwidth CT_SR131019_14CSC kbaud kbps CT_DR528000_33TRF_1ATM_TC2/3_2SYNC_TC1/2 528 kbps kbaud kbps Satellite Return Link Configuration The SRL is composed of Superframes; a superframe is composed of FHBs; in this current configuration, the SRL is composed of one Superframe, in which there are two FHB s Superframes Configuration The following displays show the Satellite SRL Superframes configuration in loop back mode: Page 20 of 41

21 7.5. FHB Configuration Satellite Return Link Superframes This step displays the FHBs of each superframes. The superframe is composed of two FHBs FHB Id#0 and FHB Id#1 The FHD Id#0 corresponds to the Logon carrier; It is composed of 14 CSC bursts. The FHD Id#0 configuration is shown in the following table: Parameters Value FHB Start Frequency MHz (Loop back mode) ( with satellite) FHB Bandwidth MHz Frame composition 14 CSC bursts Data rate 0 kbps Symbol Rate kbps Satellite Return Link Logon FHB Id#0 Configuration Table The FHD Id#1 corresponds to the Traffic carrier; It is composed of 33 TRF and 2 SYNC bursts. The FHD Id#1 configuration is shown in the following table: Parameters Description Value FHB Start Frequency MHz (Loop back mode) ( with satellite) FHB Bandwidth MHz Frame composition The FHB is composed of 33 TRF bursts, corresponding to 1 ATM, with FEC 2/3 and 2 SYNC bursts 33 TRF 1 ATM TC 2/3 and 2 SYNC TC 1/2 Data rate kbps Symbol Rate kbps Satellite Return Link Logon FHB Id#1 Configuration Table Page 21 of 41

22 The following displays show the FHB configuration in a Satellite Return Link in loop back mode: Satellite Return Link FHBs Configuration Satellite Return Link FHB Id#0 Configuration Page 22 of 41

23 Satellite Return Link FHB Id#1 Configuration 7.6. BMD Mapping Configuration Each FHB defined in the Satellite Return Link is mapped to a logical BMD. The following display show the list of FHB with their characteristics mapped on the BMD (loop back mode configuration). Page 23 of 41

24 Page 24 of 41

8. Satellite Configuration The Satellite management section allows the specification of the correct satellite position to the gateway modulator (FLT).

25 8. Satellite Configuration The Satellite management section allows the specification of the correct satellite position to the gateway modulator (FLT). The modulator sends this position to the satellite terminals, to compensate propagation delays at terminal logon. The modulator has two ways to provide this position: fixed mode and SED File mode: a) Fixed mode: The satellite position is considered as fixed in respect to a unique satellite position provided manually. b) SED File mode: The satellite position is sent at given times to the modulator, and the modulator sends the updated position to satellite terminal. The SED files are used to create SPT table for the Satellite Terminals. Note that the fixed mode is selected for the gateway connected with the ECP equipment. The following GTEM display shows the input general information and the satellite position in fixed mode. Satellite management in loop back mode Page 25 of 41

26 Satellite management with satellite The gateway NCR offset is used for BMD calibration, and computed at gateway installation. Page 26 of 41

9. Satellite Terminals Configuration The GTEM permits to configure the Satellite Terminals parameters. Each Satellite Terminal belongs to a group.

27 9. Satellite Terminals Configuration The GTEM permits to configure the Satellite Terminals parameters. Each Satellite Terminal belongs to a group. The following GTEM display shows the existing ST with their properties. The Satellite Terminal connected with the Gateway is associated with Subscriber ST2. The following parameters are given: MAC address, Manufacturer, Hardware Type, Current Software Version, Service Provider. The column Download mode is not ticketed because the automatic software update for ST is not activated. The download is automatically performed at ST logon if the software version is not up to date. During software download, column Currently Updating is ticked. Satellite Terminals list Configuration 9.1. In Loop back mode The following ST menu provides the general information concerning the status of the transmission while the platform is in loop back mode. The Forward and Return Links have acquired nominally. Page 27 of 41

28 Monitoring Menu 9.2. Over the Satellite The ST is connected to the Gateway, via the Hellas Sat II satellite; the following IDU web interface pages show the terminal configuration while transmitting: Page 28 of 41

Monitoring Menu In the monitoring menu, one can see that the terminal is active; the IDU maintains acquisition of the forward link, has acquired the return link, has validated with the hub, has an

29 Monitoring Menu In the monitoring menu, one can see that the terminal is active; the IDU maintains acquisition of the forward link, has acquired the return link, has validated with the hub, has an OAM VCC or PID and traffic VCC or PID. When the IDU receives the signaling tables and the PCR properly, the FL status becomes "Acquired". IDU Power Level shows the current setting of the IDU output power level attenuation in dbm steps. A value of "0.0" indicates maximum output power. The RL Measured Es/No, equal to 7.5 db, shows the IDU's signal to noise ratio on the Return Link as measured by the Hub. The value is sent to the IDU via the Forward Link. Page 29 of 41

30 FL Measured Eb/No, equal to 7 db shows the current signal to noise ratio on the Forward Link as measured by the IDU. Tx Frequency shows the current setting of the Tx Frequency (the center of the superframe) in multiples of 100Hz. IDU TX Status indicates that the IDU is enabled for transmission. IDU Control From the IDU Control menu, IDU Power Level (-15.0 dbm) shows the current setting of the IDU output power level attenuation (a value of "0.0" indicates maximum output power). Page 30 of 41

31 IDU Log menu From the IDU Log menu, the log shows the ST status sequences while connecting to the Gateway: log on(csc), synchronisation (SYN), and acquisition (ACQ) modes. Page 31 of 41

32 Installer menu Current XYZ ODU Coordinates in meters is the current SIT geographical location value and is expressed in (x,y,z) coordinates in meters. This field represents the x, y and z coordinates of the physical location of the SIT antenna. Page 32 of 41

33 The Coordinates types selected are the following: Lat Long El: geodetic coordinates in WGS84 format: e e e+06 SIT Type, ODU SSPA Power, ODU Maximum EIRP and First TX IF Power Level CSC Entry is information not employed by the IDU. ODU Tx Mixing Frequency is the BUC LO frequency value: MHz Default IF Power Level is equal at 0; that corresponds to the maximum transmit IF power level used by the IDU to synchronize with the Hub without saturating the ODU. Page 33 of 41

34 10. Services Profiles Configuration The Services Profiles permit to define access QoS parameters specific to a service. The following Table provides the parameters used for the profile referenced sprof2. Parameters Description Value Forward Peak Data Rate Peak data rate allowed in forward link at ATM level 4000 kbps Return Peak Data Rate Peak data rate allowed on return link at ATM level 512 kbps Return capacity RBDC max Rate Based Dynamic Capacity. The RBDC contains the CRA (Constant Rate 512 kbps Allocation) Return capacity VBDC max Volume Based Dynamic Capacity 512 kbps Number of PVC Only one or two queues in order to perform QoS profiles at subscriber creation 2 PVCs The following display shows the configuration of the selected service profile. Service Profile Parameters Page 34 of 41

35 In the Advanced Parameters display, a weight can be associated to each ST for the Forward and Return Links. The weight represents the guaranteed ST capacity for the considered ST. The weight is used to prioritize the capacity assignment between the ST (only for CRA and RBDC on the return). Greater is the weigh, higher is the priority and more repetitive is the capacity assignment for the considered ST. Page 35 of 41

36 11. Subscribers configurations The following subscriber's window allows displaying the declared subscribers with their properties. Figure: Subscribers display When selecting the subscriber referenced ST2, the following subscriber parameters are shown in detail in the following Configuration wizard: 1. Subscriber Parameters Configuration The subscriber parameters with their value are defined in the following table: Parameters Description Value Trunck - Satellite Link 1/trunk_1 Service Profile - Sprof2 Subscriber Parameters Table The Enable PEP Acceleration is not ticked because the PEP is not activated in this available Gateway version. The Subscriber parameters with their value are defined in the following table: Page 36 of 41

37 Subscriber Parameters Configuration 2. Subscriber Terminal Parameters Configuration Subscriber ST Parameters Configuration The ST parameters with their value are defined in the following table: Parameters Description Value ST MAC Address - 00:40:FD:01:5B:B7 Carrier Type 33 TRF (TC 2/3) and 2 SYNC (TC ½) bursts, 528 kbps: this type of carrier is reserved for the subscriber ST CT_DR528000_33TRF_1ATM_TC2/3_2SYNC Subscriber ST Parameters Table 3. Subscriber QoS Parameters Configuration Page 37 of 41

38 The Subscriber QoS parameters with their value are defined in the following table: Parameters Description Value IP QoS for this subscriber Forward DSCP threshold - cs7 56 QoS Rules (As seen from Terminal) Source IP address Source IP Mask Source Port Low Bound Source Port High Bound Destination Port Low Bound - 0 Destination Port High Bound Protocol DSCP Subscriber QoS Parameters Table The following display shows the Subscriber QoS Parameters Configuration Subscriber QoS Parameters Configuration 4. Subscriber Network Parameters Configuration The Subscriber Network parameters with their value are defined in the following table: Parameters Description Value Elementary Stream PID Stream PID used to send traffic and OAM to ST. 201 OAM IP LAN Subnet /24 LAN Interface ST IP VP ID It corresponds to the trunk Virtual Path ID associated to 1 Page 38 of 41

39 the subscriber. VC ID It is the Network VC. 35 Subscriber Network Parameters Table Subscriber Network Parameters Configuration Page 39 of 41

40 12. Service Provider Configuration This item allows the setting of the parameters related to a broadband services provider to subscribers. The following configuration panel shows the current Service Provider basic parameters. Service Provider Configuration All information about the router, the service profiles, the trunks, and the acceleration profiles assigning to the service provider can be viewed as long as the service provider has been applied. Page 40 of 41

41 13. Conclusion The Gateway and the Satellite Emulator configuration, described in this document, were carried out in order to take full advantage for the preparation of the IMOSAN solution integration activities: the new modules developed will be connected with the gateway and the functioning of the new proposed platform will be validated. Even if the described configurations are the reference configuration in CCM mode, others configurations are used, as an instance with different modulation and coding schemes modified on-the-fly, while transmitting; that is the solution adopted to simulate the behaviour of the ACM mode that is not for the moment not available in the Gateway. Descriptions of the trials and they results will be described in the next deliverable D16 Field Trials and Evaluation. Page 41 of 41

A-SAT TM Adaptive Satellite Access Technology John Landovskis

A-SAT TM Adaptive Satellite Access Technology John Landovskis Director VSAT Products Advantech Wireless 1 Market Challenge Main driver to lower OPEX Efficient use of satellite resources Critical for efficiency