Smart Rural Grid · 2017. 5. 12. · Smart_Rural_Grid FP7 project – Grant agreement nº. 619610 Deliverable D4.6 “Final Wireless Transmission System” v1.0 Page 2 of 26 Document

Smart_Rural_Grid FP7 project – Grant agreement nº. 619610

This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no. 619610

Smart_Rural_Grid

"Smart ICT-enabled Rural Grid innovating resilient electricity distribution infrastructures, services and business models"

Deliverable nº: D4.6

Deliverable name: Final Wireless Transmission System

Version: 1.0

Release date: 13/04/2017

Dissemination level: PU (PU, PP, RE, CO, Internal)

Status: Final

Author: XOC

Contributors EYPESA, ZIV Communications

Executive summary

This deliverable includes the final design of the Wireless Transmission System, together with all the tests and certifications carried out since its installation as a prototype (in D4.3).

As of the deployment of the prototype, the system has been improved with the developments carried out within the project. Thus, this deliverable includes the changes that have been implemented, together with a report on the performance and quality of service provided by the overall communications system.


Deliverable D4.6 “Final Wireless Transmission System” v1.0 Page 2 of 26

Document history

Version Date of issue Content and changes Edited by

1.0 April 13th, 2017 First version

Carlos Bock Jordi Tortosa

Peer reviewed by:

Partner Contributor

EYPESA Ramon Gallart

UPC Andreas Sumper /Daniel Heredero

Deliverable beneficiaries

WP / Task Responsible

All Work Package Leaders



Table of contents

EXECUTIVE SUMMARY ................................................................................................... 6

1. INTRODUCTION ...................................................................................................... 7

2. DESCRIPTION OF THE FINAL WIRELESS TRANSMISSION SYSTEM ................. 8

Wi-Fi access network .................................................................................................... 9

Radio Backbone .......................................................................................................... 11

Fibre Network backbone ............................................................................................. 13

Optical interconnection ........................................................................................... 13

Complete network ....................................................................................................... 15

3. PERFORMANCE AND RESULTS .......................................................................... 17

Network Throughput .................................................................................................... 17

Access Network in Planallonga ............................................................................... 17

Radio backbone ...................................................................................................... 17

P2P Milany - Bellmunt............................................................................................. 17

P2P Milany-Verger .................................................................................................. 17

Fibre Network backbone ......................................................................................... 18

Radio interconnection between Collsuspina and Bellmunt ...................................... 18

Network availability ..................................................................................................... 19

Access network ....................................................................................................... 19

Radio backbone ...................................................................................................... 21

Fibre backbone ....................................................................................................... 24

4. CONCLUSIONS ..................................................................................................... 26



Abbreviations and Acronyms

Acronym Description

ADC Analogue to Digital Converter

ADSL Asymmetric Digital Subscriber Line

AES Advanced Encryption Standard

BER Bit Error Rate

BPSK Binary Phase Shift Keying

B8ZS Bipolar 8-Zero Substitution

CO Dissemination Confidential, limited to project participants

CSMA/CA Carrier Sense Multiple Access with Collision Avoidance

DECT Digital European Cordless Telephone

DMVPN Dynamic Multipoint Virtual Private Network

DSO Distribution System Operator

EC European Commission

ED Energy Detection

EDGE Enhanced Data rates for GSM Evolution

EGSM Extended Global System for Mobile Communications

EVPL Ethernet Virtual Private LAN

FDD Frequency Division Duplexing

FEC Forward Error Correction

GSM Global System for Mobile Communications

GPRS General Packet Radio Service

HSDPA High Speed Downlink Packet Access

HTTP HyperText Transfer Protocol

HDB3 High Density Bipolar 3 zeros

IDPR Intelligent Distribution Power Router

IEEE Institute of Electrical and Electronics Engineers

IP Internet Protocol

IPSec Internet protocol with Security extensions

ISDN Integrated Services Digital Network

ISP Inter System Protocol

JDS Jerarquía Digital Síncrona (Synchronous Digital Hierarchy)

LAN Local Area Network



Acronym Description

LRWBS Low Rate Wide Band Services

LV Low Voltage

MAC Medium Access Control

MTU Maximum Transfer Unit

MV Medium Voltage

NHRP Next Hop Resolution Protocol

OSPF Open Shortest Path First

PLC Power Line Carrier

PLT Power Line Telecommunications

PSK Phase Shift Keying

QoS Quality of Service

QPSK Quadrature Phase-Shift Keying

RIP Routing Information Protocol

RS Reed-Solomon

RTD Round Trip Delay

RTU Remote Terminal Unit

S/I Signal to Interference Ratio

S/N Signal to Noise Ratio

SNMP Simple Network Management Protocol

SS Spread Spectrum

SSH Secure Shell protocol

TCP Transmission Control Protocol

ToC Table of Contents

UDP User Datagram Protocol

UMTS Universal Mobile Telecommunications System

VLAN Virtual Local Area Network

VRRP Virtual Router Redundancy Protocol

WCDMA Wide Band Code Division Multiple Access



EXECUTIVE SUMMARY

This deliverable describes the final wireless transmission system that has been deployed to give connectivity to the Valfogona area, in Girona, which was selected within the Smart Rural Grid project to carry out the prototype of the Smart Rural Grid System. The document describes the final overall network architecture, both at physical, layer and network levels and the performance results that have been obtained during the verification process.

The validator in Vallfogona was deployed to test the Smart Rural Grid wireless backup services. Network certifications after the trial show that the system fulfils the project design criteria and offers backup service to the PLC communications channel and a transport stream for data connectivity to the network operation centre.

Performance measurements, such as bandwidth and availability, confirm that the system fulfils all the requirements that were defined in D4.1.

The main conclusions are:

The wireless communications network offers a reliable backup to communicate with the end subscribers

Performance and latency fulfil the design parameters and allow to support high speed transmission services

No configuration adjustments were required from the initial design described in D4.3



1. INTRODUCTION

This deliverable summarises the performance of the final wireless network deployed in the Vallfogona area, together with the backbone that interconnects this network with EYPESA interconnection point. This network, as originally described in D4.3, is composed of radio and fibre optic links.

Minor changes were required from the initial design in D4.3.

The results in terms of performance, latency and availability are successful and confirm that the network can be used to connect the end subscribers with EYPESA interconnection point at high data rates.



2. DESCRIPTION OF THE FINAL WIRELESS TRANSMISSION SYSTEM

Figure 2, taken from D4.1, shows the complete network originally intended for the pilot area in Vallfogona and between Vallfogona and EYPESA interconnection point in Granollers.

Vallfogona is a rural area of Ripollès county, located in the province of Girona, in the north of Catalonia, between the towns of Ripoll and Olot.

Figure 1. Location of Vallfogona, Ripollès, Girona

The wireless network was composed of the following subsystems:

- A Wi-Fi access network to connect the final customers in Vallfogona area - A set of radio links to connect this WiFi area to a fibre backbone in Can Petafi - A backup radio link from Bellmunt to Centelles, to also connect to a fibre backbone

Figure 2: Meshed network from Vallfogona area to EYPESA HQ in Granollers

Milanyrepeater

Bellmuntrepeater

P.T.CanPetafi

PLC Communications (trunk)

Wireless Communications (trunk)

Wireless Communications (access)

Fiber optics connection

GPRS connection

MPLS network



Wi-Fi access network

The Wi-Fi access network covers four areas. Those are:

Vallfogona

Planallonga

Piella

Les Artigues

All the houses are isolated and therefore, GPS coordinates are also included.

Figure 3. Access Network in Vallfogona area

Figure 4. Distribution Network in Les Artigues



Figure 5. Distribution Network in Planallonga area

Figure 6. Distribution Network in Piella



Radio Backbone

The following figure shows the design of the radio links from Verger to Milany, Bellmunt and Petafi. Both, Petafi and Bellmunt are connected to the fibre backbone using Xarxa Oberta de Catalunya (XOC) network.

Figure 7. Radio backbone links



The equipment used in the Verger-Planallonga-Piella radio link is the following:

Cambium Canopy PMP 58430 AP and SM (5,8 GHz OFDM)

These devices have configurable channel bandwidth: 5, 10 or 20MHz and configurable cyclic prefix (1/4, 1/8 or 1/16) with a maximum range for Access Point (AP) of 1 to 30 miles for 5 and 10MHz channel bandwidth and 1 to 24 miles for 20MHz channel bandwidth.

The SM has Auto Transmit Power Control (TPC) with power set by the AP to provide power levelling for close-in SMs.

Figure 8. PMP 58430 AP with antenna (left) and PMP 58430 SM (right)

The equipment used in in Petafi-Bellmunt-Milany-Verger radio link is the following:

Cambium Force 110 in PTP Modality

Characteristics:

Frequency availability: 5150 – 5970 MHz

Throughput: 220 Mbps of real user data

Channel Bandwidth: 5, 10, 20 and 40 MHz

Security: 128-bit AES encryption (CCMP mode)

Peak gain: 25 dBi antenna gain with 30 dBm of transmit power

Ethernet Port: Gigabit Ethernet (802.3af compliant)

Figure 9. ePMP Force 110 PTP



Fibre Network backbone

The fibre network backbone connects Vallfogona area with EYPESA NOC in Granollers.

Two links have been designed to offer redundancy to the system:

Fibre link directly from C-37 roadway to the Les Preses node

Radio link from Bellmunt to Collsuspina / Centelles

This second one was panned as a back-up of the direct fibre link in C-37.

The following picture presents the geographical scope of the network backbone.

Figure 10. Fibre connection backbone from Petafi and Collsuspina to EYPESA in Granollers

Optical interconnection

The Xarxa Oberta de Catalunya (XOC) optical fibre network connects EYPESA NOC in Granollers to Petafi substation.

XOC provides an active 30Mbps Ethernet service in Petafi. This network runs alongside the C-37 road to the nearest node in Les Preses. This node acts as a Label Edge Router. The service is delivered at the Network Operation Center of EYPESA in Granollers.



Figure 11. Optical fibre connection from Petafi radio point to Les Preses

The edge equipment is a:

Cisco ME 3400G-2CS AC Ethernet Access Switch

The specifications of the device are the following:

Consumption: 15W (typical), 20W (maximum), 68 Btus per hour

AC: 100 to 240 VAC, 0.5 to 0.25A, 50 to 60 Hz

Figure 12. CPE CISCO ME-3400

As a backup solution to direct fibre link, a radio link Bellmunt and Collsuspina (in Osona county) has been deployed.

Figure 13. Bellmunt – Collsuspina elevation profile



Figure 14. Backup radio link from Bellmunt to Collsuspina

From Collsuspina to Centelles, a second radio has been deployed to connect to the XOC access node in Centelles. This node allocates a fibre termination point of XOC and provides access to XOC fibre backbone to interconnect with EYPESA NOC in Granollers.

Complete network

Figure 15 shows the overall communications network that has been currently deployed for the Smart Rural Grid project.

Figure 15. Complete radio network for the Vallfogona prototype



The prototype deployed in Vallfogona is connected through radio links to Bellmunt.

Bellmunt is the routing point which selects the link to connect the prototype to EYPESA NOC in Granollers.

Due to permit restrictions, the link C-37 has not been deployed yet (expected May 2017). Thus, the backup link was used as the main link during all the tests and certifications.



3. PERFORMANCE AND RESULTS

Network Throughput

When the systems were deployed, network throughput tests were carried out. The results were the following:

Access Network in Planallonga

The channel bandwidth of the access network was also selected to be 20MHz (encrypted) in the 5GHz band (Frequency: 5735 MHz)

Verger

RSSI: -56 dBm

Downlink 20,51Mbps / Uplink 7,45 Mbps

Nou Piella

RSSI: -69 dBm

Downlink 11,43 Mbps / Uplink 3,98 Mbps

Radio backbone

The radio backbone from the fibre optics network alongside the C-37 and Verger was configured with a channel bandwidth of 20MHz.

P2P Milany - Bellmunt

Downlink RSSI: -52 dBm

Uplink RSSI: -50dBm

Ping: 5-6ms

Capacity: 64Mbps Downlink

80Mb Uplink

P2P Milany-Verger

Downlink RSSI: -55dBm

Uplink RSSI: -50dBm

Ping: 1-2ms

Capacity: 53.5Mb Downlink

89.9Mb Uplink



Fibre Network backbone

The service was configured to provide 30Mbps, which was considered enough for the prototype, considering the different radio segments involved in the interconnection.

The fibre link achieved a sustainable throughput during the tests:

Figure 16. Fibre network throughput

Radio interconnection between Collsuspina and Bellmunt

The radio link between Collsuspina and Bellmunt was also tested to provide 30Mbps. The results were the following:



Figure 17. 30Mbps Throughput radio link

Network availability

A network availability analysis has been carried out during the months that the prototype has been operational in order to verify its readiness for service.

The network availability was analysed for the three systems:

Access network

Radio backbone

Fibre interconnection

Access network

APs in Planallonga and Nou Piella were constantly monitored during the trial. Both performed well. Availability was mainly influenced by weather conditions (heavy rain, storms or snow).

The following graph show the availability for AP Planallonga:

Figure 18. Availability for AP in Planallonga



Note that it was available at all time, with very short periods of time of data losses lower than 20%. The following graph shows the packet losses graph:

Figure 19. Packet losses in AP in Planallonga

The behaviour of the AP in Nou Piella was not that good and was down for a couple of days during the tests.

The following graph shows the availability for AP Nou Piella:

Figure 20. Availability for AP in Nou Piella

As can be seen, it was down from 10th to 13th March, for maintenance reasons due to the deployment of new technology. During the rest of the time, it behaved similar to the AP in Planallonga, and losses were below 20% for any specific day.



Figure 21. Packet losses in AP in Nou Piella

With these results, we conclude that the system is robust enough to be fully operational.

Radio backbone

The radio backbone, as described in section number 2, comprised three links:

Verger

Bellmunt

Milany

None of the three links suffered any relevant loss of signal period during the trial.

The following graphs corroborate this statement:

Figure 22. Availability of the link in Verger



Figure 23. Availability of the link in Bellmunt

Figure 24. Availability of the link in Milany

Shortages were very limited and always due to weather conditions. The following graphs show packet losses for the three links of the radio backbone:



Figure 25. Packet losses in Verger

Figure 26. Packet losses in Bellmunt

Figure 27. Packet losses in Milany

The global radio system offered an availability >99%, which is an expected result for radio transmission systems.



Fibre backbone

Fibre backbone had no shortages during the trial period (Jan – March 2017).

Thus, the availability during this period was of 100% for the fibre link.

For the backup link from Collsuspina to Bellmunt, availability was of 99,21%.

The following graphs show up and down times for this link.

02/01/2017 – 08/01/2017

09/01/2017 – 15/01/2017

16/01/2017 – 22/01/2017

23/01/2017 – 29/01/2017

30/01/2017 – 05/02/2017

06/02/2017 – 12/02/2017



13/02/2017 – 19/02/2017

20/02/2017 – 26/02/2017

27/02/2017 – 05/03/2017

06/03/2017 – 12/03/2017

13/03/2017 – 19/03/2017

20/03/2017 – 26/03/2017



4. CONCLUSIONS

The final wireless transmission system has been proven to be a robust telecom system to provide connectivity in the context of the Smart Rural Grid project.

No changes have been carried out from the initial deployment presented in D4.3. However, due to permits limitations, the backup link has been used as the main connection, while the link along C-37 is under construction (expected to be completed in May 2017).

The availability of the different systems is higher than 99%, except for the AP in Nou Piella, which due to maintenance reasons (due to the deployment of new technology) was down during several days in a row (10th to 13th March). The rest of the systems had limited shortages, all due to weather conditions (note that we are in a rural and elevated area, which means that heavy rain, storms and snow are usual in winter).

Availability of the backbones was (both radio and fibre), in any case, higher than 99%, which is a good availability time if we additionally consider that this is a backup system in the scope of the project.

In summary, we can conclude that the final wireless transmission network deployed in the context of the Smart Rural Grid project for the trial in Vallfogona area offers the required capacity, latency and availability and fulfils the design specifications included in D4.1. Minor incidents that prevented connectivity were mainly caused by weather conditions and are considered normal due to the orography of the area.

EXECUTIVE SUMMARY1. INTRODUCTION2. DESCRIPTION OF THE FINAL WIRELESS TRANSMISSION SYSTEMWi-Fi access networkRadio BackboneFibre Network backboneOptical interconnection

Complete network

3. PERFORMANCE AND RESULTSNetwork ThroughputAccess Network in PlanallongaRadio backboneP2P Milany - BellmuntP2P Milany-VergerFibre Network backboneRadio interconnection between Collsuspina and Bellmunt

Network availabilityAccess networkRadio backboneFibre backbone

4. CONCLUSIONS

Documents

Smart Rural Grid · 2017. 5. 12. · Smart_Rural_Grid FP7 project – Grant agreement nº. 619610 Deliverable D4.6 “Final Wireless Transmission System” v1.0 Page 2 of 26 Document