Wi-Fi solutions by JNL Systems Inc.

Details

Our profile is the design, implementation and support of Wi-Fi solutions of any complexity: from hotspots in hotels, restaurants, hostels to wireless multi-service networks with hundreds of access points and continuous coverage of large rooms, buildings and territories, with 802.11 mobile subscribers authentication X through directory services (for example, Active Directory), with monitoring systems and IDS / IPS. 

The standard of the wireless Wi-Fi network (IEEE 802.11) defines both the mandatory functions of the devices, and the optional ones, the implementation of which remains at the discretion of the manufacturer. The main feature of the equipment of the corporate sector is the use of these functions. In our projects we offer the best solution for the solution of the tasks with the use of equipment that has the necessary and sufficient functions for each specific situation.

We implement solutions for wireless Wi-Fi networks

In recent years, the wireless network market is over saturated with solutions from different vendors. Aggressive marketing policy is carried out by some market participants, most often focusing on advertising campaigns and attracting customers, and, not least, on the quality of the proposed solutions. The task of choosing reliable and high-quality equipment is not simple: it is desirable to have a rich experience of implementation and experienced engineers whose knowledge is confirmed by certificates. In our work we rely on the experience of successful projects and offer solutions that have proven to be reliable and stable. We pre

fer a portfolio of Wi-Fi solutions for multi-service networks of the three largest providers:

• Cisco solutions for wireless Wi-Fi networks;

• SonicWALL solutions for wireless Wi-Fi networks;

• Ubiquiti Unifi solutions for wireless Wi-Fi networks.

Unique advantages of wireless Wi-Fi networks

Widely spread. To date, the Wi-Fi chip is in any portable device (laptop, tablet, smartphone), which allows you to provide access to the network to any user without additional investment in wireless adapters.

Bring your own device (English Bring Your Own Device). The BYOD concept is a security policy in which employees are allowed to bring their portable devices (laptops, tablets, communicators) to the workplace and use these devices to access the company's preferred data and services. This term is also used to describe the same practice with respect to educational institutions where students use personal devices for educational purposes. With this approach, all corporate security policies are implemented, the local network remains protected from possible threats. Employees and students are more comfortable working with their personal devices, and this practice has become a common trend. Our task is to design and configure a Wi-Fi network in accordance with the current needs of the Customer.

High level of security. Wi-Fi uses sophisticated encryption methods that can not be circumvented or "broken down" with the help of modern computing power. Access is provided with both a password and a security certificate. The entrance to the wireless Wi-Fi network is as secure as the connection to the corporate port of the switch.

Scalability. Not every implementation requires further scalability (for example, hotels, restaurants, cafes). But if you are faced with the task of building a scalable wireless network, the main point is the choice of the manufacturer and the access line. Not all access points are scaled from an autonomous access point to a lightweight access point managed by a Wi-Fi wireless network controller. In scalable wireless networks, the first step is to install and configure multiple access points. The development of the company and the increase in demand will not entail a complete replacement of equipment. It will only be necessary to update the firmware (s) in existing access points and add the wireless network components. In some cases, you may need to move the access points to a new location.

Seamless roaming (roaming of mobile subscribers "without a single break"). To implement voice (VoIP) or video communications, the corporate infrastructure uses rapid roaming mechanisms (similar to handoff in cellular networks). A wireless Wi-Fi network controller transmits mobile subscriber services when switching from one access point to another without delay and packet loss.

Automatic control and management of radio resources of the system. The WLAN controller dynamically redistributes the frequency channels and power of the access point transmitters in accordance with predetermined algorithms. As a result, the level of interference created by neighboring points decreases. The mechanisms for reservation of access points are realized - if one of the devices fails, neighboring points increase capacity and "intercept" customers, the service does not suffer.

Protection of radio broadcasts from interference and malicious clients. The standard wireless Wi-Fi network equipment is not capable of detecting interference from devices other than IEEE 802.11 standards. The task of monitoring radio broadcasts falls on access points with an additional spectrum analysis function, or specialized radio sensors, complementing the infrastructure of a wireless Wi-Fi network. In some cases, this role is taken over by access points switched to analysis mode and not serving customers. After detecting interference, the system rebuilds the plan of the access point channels. And so that the channels adjacent to the interference, assigned access points, as far removed from their sources. In addition, the system allows you to record attempts to "jam" the network, and block malicious attempts to select an access password. In all cases, events are logged and reports are generated indicating the localization of wireless threats on the premises plan, and recommendations for their elimination.

Determine the location of devices. Specialized services running on a Wi-Fi wireless network controller allow you to determine the location of radiation sources by the signal strength received by multiple access points. These include both client gadgets and computers, and sources of interference (microwaves, cameras), devices of intruders ("jammers", access points - twins). The system determines their location and displays them on the floor plan. There are several options for implementing such systems, their accuracy is about 3-5 meters. Position data can be used to collect statistics, as well as to prohibit the use of mobile devices in certain areas on the building layout, for example, meeting rooms or bathrooms.

Stably high speed of access. To ensure high speeds of access to the network, it is necessary to fulfill a number of factors, the main one of which remains the competent design of the WLAN. The task of an engineer performing a survey or placement of points is to ensure the inseparable coverage of the entire territory of the building. At the same time, the system should be configured in such a way that it does not accept connections from customers that are outside of stable communication. In this case, the network will not be overloaded by re-sending packets, and all clients will be guaranteed a guaranteed connection speed, regardless of the load from each.

Increase user loyalty. In the service sector (hotels, hotels, hostels, restaurants, cafes, bars, business centers, shopping centers and breakwaters, etc.), the provision of free Wi-Fi Internet access significantly affects the client's attitude to the service provider and Increases star rating. For some potential customers, the ability to access the Internet is crucial. In large shopping centers and malls, buyers receive additional information and reviews about the product through the Internet and are more likely to make purchases. In addition, based on free access to a wireless Wi-Fi network, an interactive catalog of products can be implemented on the platform of a web portal, as well as a shopping cart, contextual advertising, an interactive shopping center scheme, and other services.

Web-based authentication. A popular solution for hotels, airport terminals, shopping centers. The essence of it is that the mobile subscriber connects to a Wi-Fi network without a password, opens an Internet browser and enters an arbitrary URL. The authorization system automatically redirects it to an authentication page where it can enter a login and password. After successful input, the user accesses the Internet. Web-authentication systems are popular even in corporate Wi-Fi wireless networks, where the data from Active Directory is used as a login and password.

Guest portal for hot spots. Often in places with open access before they get on the Internet, users get to the page of the service provider (restaurant, store, mobile operator, etc.). Whence, after viewing mandatory advertising, the client is redirected to the Internet. This approach is similar to web-authentication, but does not require entering a pair of login / password. The portal is a web-page, on the basis of which any web services, statistics collection service, connection time, etc. can be implemented. It should be noted that, due to advertising, the costs for accessing customers on the Internet are covered, which, among other things, can be limited in speed / time / volume, etc.

Quality of Service (QoS): The quality of service (QoS) mechanism classifies traffic by type and importance by sending high-priority data packets first. Without this mechanism, it is not possible to simultaneously go through a network of large volumes of simple data and voice communication (VoIP - Voiceover Internet Protocol) or videoconferencing. In the absence of this technology, the communication "croaks", is interrupted, the image of the interlocutor is fragmented and covered with "squares".

Spheres of application of wireless networks Wi-Fi

Wi-Fi solutions for small businesses. Solutions for small businesses are characterized by simplicity, economic benefits and a short installation time of the network. Wireless access to these solutions is provided for access to the internal network and the Internet. Support for voice and video, as well as streaming data is significantly limited. Usually the number of access points in these solutions does not exceed 4-5 pieces, at the same time, about 6-8 clients are connected to each. Such configurations do not require the use of hardware controllers, all access points are configured separately. For network management, it is necessary to perform identical manipulations with each point separately, which requires a higher qualification of IT staff and reduces the functionality of the system as a whole.

Wi-Fi solutions for medium-sized businesses. In such installations, both software and hardware controllers for wireless Wi-Fi networks can be used. At the same time, the entire network is centrally managed from a single point, which allows you to quickly configure all access points. Their number varies from 10 to 50 pieces. Depending on the needs, support of the guest network and hotspots, roaming of client devices (transition of subscribers between access points without disconnecting) with support for voice and video calls can be implemented. In solutions of this class, wireless IP telephony can be implemented, with subnets allocated for this class of devices and assigning higher priority to voice calls than traffic through QoS mechanisms.

Corporate solutions. In installations of this level, the hardware controllers of wireless Wi-Fi networks are always used. Solutions of this class involve the use of up to 3000 access points, and support up to 30,000 client devices simultaneously. With the use of specialized radio sensors and access points with radio monitoring function, a system for determining the location of subscribers, sources of interference and intruders posing a threat to network security can be implemented. In this case, the system has the ability to self-repair: when there is interference, a dynamic channel is selected, the least affected by the interference. Failover mechanisms are implemented. If the access point fails, its clients are intercepted by neighboring access points without losing the connection. Connection security is implemented by the most reliable method: through a RADIUS server with WPA2 encryption based on security certificates.

Warehouses and hangars. For warehouse complexes and premises, specialized access points are used, protected from external physical influences. For solutions of this class, it is extremely important to choose the location of access points and antennas, since there are a lot of metal structures in the environment. For stable and trouble-free operation of systems, strict compliance with the installation rules is required. Solutions for warehouses are distinguished by their orientation to work with portable terminals and bar code scanners, as well as radio tags RFID. To control the movement of equipment and goods, specialized readers and sensors are used, connected to a single system and representing a single solution. Our company has a wide experience of successful installations of wireless Wi-Fi networks of this type, which serves as a guarantee of the quality of work.

HORECA (hotels, restaurants, cafes). Specificity of Wi-Fi solutions for hotels, hotels, restaurants involves using a wireless network to access the Internet, e-mail, VoIP telephony and video. Such schemes do not require the implementation of roaming functions of clients without disconnection, since the main traffic flow is from fixed points. A software controller can be used to configure and monitor access points. To ensure the security of these guests and to facilitate the configuration of client devices, password-based WPA2 encryption is used, as this excludes the ability to listen to the air and intercept confidential information. For convenience of administration and sale of service of access to the Internet through Wi-Fi it is possible to grant the Personal Cabinet to each mobile subscriber.

Educational institutions. In addition to commercial use, the trend of deploying Wi-Fi networks in educational institutions is gaining momentum. In schools and universities, wireless access from tablet PCs completely translates the entire educational process into an interactive environment, which can significantly improve the quality and level of education. To attend lectures, you do not need to be physically in the classrooms, the question of access to information carriers is solved: paper benefits, libraries, schedules. The interaction between the teacher and the student becomes available anywhere in the world.

Medical institutions. Using Wi-Fi in medicine means instant access to the most current information from the Internet, any reference tools, the ability to write prescriptions with a single touch to the screen, storing and reserving all patient records on servers, etc.

Solutions for operators. The main problem with deploying a cellular network is the limited bandwidth of each cell. All the speed available to the base station is shared between subscribers. To increase the speed, operators tend to reduce the number of subscribers, reducing the coverage area of ​​each cell. This entails unreasonably high costs for increasing the number of expensive base stations to cover the same territory. In this case, use Wi-Fi. Cheap Wi-Fi points provide access to the Internet exactly where it's most needed. Voice calls of subscribers are conducted through existing GSM and 3G networks. In this case, there is no need to deploy additional 3G base stations. In another scenario, Wi-Fi deploys in conjunction with short-range cells (pico- and femtocells) in places with maximum subscriber density, to reduce the load on cellular base stations. In addition, the vast majority of mobile devices are equipped with Wi-Fi, even entry-level tablet computers and e-books, in which there are no other wireless communications. All these devices can be connected via Wi-Fi to the operator's networks, expanding the subscriber base and increasing the economic feasibility of deploying such networks. The same situation is observed in 4G networks (WiMAX / LTE). Often these technologies are used as a backbone for delivering traffic to certain points. This traffic is then distributed locally via a Wi-Fi network. This process is called offload. At the same time, the subscriber of the cellular network continues to receive voice calls and SMS through the cellular network, and all Internet traffic goes through Wi-Fi. At the same time, Internet-telephony and videoconferencing services such as Skype and Lync remain available. Billing for Wi-Fi in local points can be organized in any accessible way: by means of payment terminals, paid SMS with temporary passwords, etc.

Combining two locations with a radio bridge (point-to-point link). 

Our company offers solutions for the organization of wireless point-to-point links, radio bridges. These technologies are indispensable at sites where it is not possible to organize a communication channel over wired networks, or it is not economically feasible. For example, communication between different buildings on the territory of one object is more advantageous to organize through a radio channel - this is a reliable solution, in cases where laying a cable underground or conducting air lines for the transmission of a small amount of traffic is not rational. An example of such a solution is the connection of the building of the checkpoint, which is located at a considerable distance from the main building. Typically, equipment is used specifically for organizing point-to-point channels that are not compatible with other Wi-Fi equipment. Specialized antennas with narrow directional patterns, as well as access points intended for use under different weather conditions, with an extended temperature range, are hermetically sealed and resistant to aggressive environments. Such solutions require high-quality installation in compliance with all the rules and in accordance with the requirements of the legislation in the field of communications. The possibility of installing such systems is limited by the conditions of direct visibility and cleanliness of the area in which the radio signal propagates between the antennas.

Introduction of wireless Wi-Fi networks

Designing and installation of wireless Wi-Fi networks is a complex engineering task, in the solution of which specialists of several directions take part. In order for the network to meet all customer requirements and provide reliable service, at all stages of implementation, the requirements for the placement of access points, antenna orientation, SCS laying for powering PoE access points and connecting with switches must be strictly complied with. The tuning of the equipment should be dealt with by engineers who have knowledge of the technology and physics of propagation of radio waves, as well as experienced in working with the equipment being installed. Otherwise, you can sell a large number of equipment that individually meets all the requirements, but is installed so that it is a "pile" of expensive non-functioning hardware. Our specialists have the appropriate education, knowledge and experience, as well as certified equipment manufacturers, so you can rely on us. This is evidenced by partner statuses of our company, successful projects and confirmed qualifications of our engineers.