Video-monitoring for Municipalities

Increased security required by citizens in

municipal environments requires a full

development of video surveillance and

security solutions that are able to:

– Connecting and manage a variety of remote locations with different types of cameras.

– Generate video images of high quality for subsequent storage and analysis.

Atizapan de Zaragoza is one of the 125 municipalities in the State of

Mexico. It has an area of about 90km² and a population of half a million

residents. This urban municipality is part of the metropolitan area of Mexico

City.

The Public Safety Department of Atizapan Municipality has launched an

ambitious public project for citizen security throughout the municipality,

given the high levels of crime in the area. With this deployment, the C4 or

CIMA (Center for Intelligence and Monitoring Atizapan) receives and

stores real-time videos from 304 CCTV cameras located throughout the city.

The partner company that has deployed the project is Jomtel, a reputed

integrator in the sector of public security, which has provided turnkey

Albentia Systems technology that meets the most demanding solution.

About the Technology

Albentia Systems, Spanish pioneer

manufacturer in the sector of wireless

broadband, presents, with his partner in

Mexico ,Jomtel, a solution for digital

video-surveillance networks based on

IEEE 802.16 technology.

Albentia Systems implements robust and

reliable solutions, able to operate in

highly interfered outdoor environments

and under the most demanding climate

conditions.

Wireless Video-monitoring System Atizapan de Zaragoza, Mexico

SUCCESS STORY

The Solution

The solution featured both point-to-multipoint and point-to-point technologies,

since the project required a backbone for transport of all videos to CIMA, as well as

a multipoint network where 304 cameras would be deployed. All base stations,

CPEs and PtP radiolinks in the network were provided by Albentia Systems.

Point-to-multipoint access network for IP cameras:

The 304 cameras were distributed in 76 poles located in the avenues and major intersections. On each pole there were 4 cameras, 3 fixed cameras and a PTZ were installed on each pole and they all had night vision. The cameras were connected by a switch to an ARBA Pro CPE with an integrated 20dBi antenna. The same CPE connected multiple IP devices, facilitating deployment and minimizing costs.

76 CPEs were wirelessly connected to various base stations distributed around 5 communication towers. In total there were 22 ARBA Pro base stations. Albentia Systems worked with the integrator to optimally design the network, taking advantage of the variety of antennas available for the base stations (60°, 90° and 120° integrated or external antenna).

All towers had more than one base station and ARBA Link transport device, so 8 synchronism units were installed to avoid co-channel interference thanks to Albentia Systems’ true TDD technology.

Point-to-point transport network from towers to the Intelligence and Monitoring Center in Atizapan:

In order to get all the videos to C4, 11 ARBA Link radiolinks were installed. In the design process, network load was studied to assess whether it was necessary to install the 150 Link model or the 350 model, depending on the required capacity.

Some towers had no line of sight with the C4, so alternative points were used for intermediate links.

The Challenges

The principal objective of the project was to establish an effective surveillance and

public safety system that allows real-time monitoring key locations in the

municipality and recording images for later crime analysis.

The project was ambitious because it required video-surveillance in avenues and

principal intersections in the town, both day and night, and included a system for

citizens to activate an alarm in case of danger. The images and alarm signal had to

arrive at CIMA, so the network had to be stable and secure 24x7, and invulnerable

to falls, delays, packet loss or pixilation. For such critical security purposes, an

unprofessional wireless technology would not be suitable.

The project required an easy deployment that allowed the municipality to save

costs in terms of time and resources. The equipment had to be rugged and robust

in order to perfectly operate outdoors and in a highly interfered urban

environment, so the project needed a high spectral efficiency solution that could

provide special protection against interference.

Finally, another fundamental challenge of the project was to achieve maximum

transmission security, to prevent the interception of images by anyone other than

the management bodies of municipal entities.

Synchronism Units (SCUs)

An SCU is a device designed for

synchronization and managed power

supply of base stations and radiolinks.

Each SCU allows feeding of up to 4

devices and, thanks to its managing

capability and its connection to the data

network, it is possible to check what

devices are being fed, stop or activate

this power supply, and monitor each

port’s power consumption.

Thanks to its synchronism signal

generation system, the SCU allows

installation of multiple radio devices at

the same location, completely

suppressing interference between them.

Albentia Systems, S.A. C/ Margarita Salas, 22

Parque Tecnológico Leganés 28918 Leganés, Madrid (España)

Tel.: +34 91 440 0213 e-mail: sales@albentia.com

Albentia Systems is the leading Spanish manufacturer of broadband wireless solutions and systems with

great added value. Based in Madrid (Spain), the company uses its knowledge and experience in developing

innovative radio systems for IEEE 802.16 deployments, for broadband access, data, VoIP and professional

video applications.

www.albentia.com albentia.wordpress.com

The Municipality of Atizapan now has an extensive network of CCTV surveillance

that sends videos from 304 cameras to a control center which monitors and

stores all information.

It also has an innovative panic pushbuttons system, with buttons found on poles

which, when pressed, activate an alarm and connect the audio channel of the

cameras so that citizens at danger can communicate with the C4.

The separation of services (layer 2 QoS) offered by Albentia Systems’ 802.16

equipment ensures that videos are transmitted through different services and that

no camera can saturate the channel in case of failure, since the allowed

bandwidth is limited in order to ensure an even distribution of the available

resources.

The bandwidth of just 10MHz and anti-interference mechanisms, such as the ARQ,

make this equipment the most robust to operate in environments where the 5GHz

license-exempt band is highly interfered as in this case.

Albentia’s asymmetrical technology allows for allocation of downlink and uplink

services. Hence, the equipment can be configured for uplink transmission of up to

30Mbps so that almost 100% of available capacity is used to send videos to the

C4, leaving only a small downlink service for management and orientation of PTZ

cameras. This way, it is possible to maximize the benefits of the purchased

equipment.

The easy deployment of Albentia Systems’ equipment enables significant savings in

time and costs. Furthermore, the robustness and resistance of equipment which

has been specially designed for outdoor use, will allow huge savings on repairs and

equipment replacement.

Finally, thanks to powerful security mechanisms of the solution as the AES256

encryption, high transmission security is guaranteed, preventing the interception

of images collected by the cameras.

The Benefits

Main characteristics

Professional OFDM wireless point-to-multipoint system

Real throughput up to 35 Mbps

Available in the 4.9-5.9 GHz bands

IEEE 802.16-2012 standard solution

Long-range coverage > 50 km

Guaranteed throughput per terminal and differentiated service

“True-TDMA” with layer 2 QoS

Low latency < 5 ms

Configuration and provisioning web interface

AES 256 encryption and X.509 certificates

TDD synchronization to avoid interference between sectors

Anti-jamming mechanisms against interference

Robust and reliable full-outdoor IP67

Low power consumption < 4.5 W

LNK-LU-150 radio link and

PRO-BS-1150 base station

January 2015