TEC Wireless LAN,MAN,and WAN Engineering Services

In the ever increasingly congested and competitive wireless market, having the right partner experienced in turnkey wireless solutions is vitally important. TEC believes that careful planning and proper engineering are the two most important factors in the implementation of a wireless system and are crucial to ensuring optimum quality and reliability in any wireless network. TEC’s engineering services can have a significant positive impact on the long-term performance and profitability of your wireless network. TEC can provide dedicated and specialized resources to survey, test and analyze your planned wireless network implementation locations and design and/or modify your wireless LAN,MAN or WAN. This includes design and implementation requirements for integration with your existing or planned wireline network infrastructure.

TEC engineers and technicians are equipped with state-of-the-art computers, software applications, and field test equipment to provide comprehensive survey services that form the basis for the creation of a reliable, high-quality wireless network. TEC adheres to stringent design requirements necessary to meet the quality and performance requirements of the wireless network for your specific operating environment while conforming to EIA/TIA standards and FCC regulatory requirements.

TEC’s experience and capabilities encompass technologies essential to wireless engineering, including but not limited to: CDMA, GSM/GPRS, TDMA, and more. Our services focus on cost-effective network systems engineering and planning for Wireless Networks, including “location-to-location” backhaul solutions, as well as, “in building and campus based” multi-user access solutions in both Point-to-Multipoint (PMP) and Point-to-Point (PTP) configurations.

Many factors can drive your choice of wireless network architecture deployment. Wireless networking solutions are becoming a common network design component to meet an ever-increasing need for communications capabilities across an enterprise. The bottom line can be significantly impacted by the quality and performance of today’s network infrastructures. The planning and integration of wireless technology into the corporate LAN, MAN, WAN infrastructure is now more important than ever. Critical components to the planning and implementation process include spectrum allocations, equipment types, site availability, the RF environment, and network architectures, all of which have a direct impact on the effects of wireless technology in your business.

TEC has experienced professionals to help your company understand the complexities and the benefits of wireless technologies for both your business plan and your operational requirements related to a successfully engineered wireless solution. TEC works with your business planning, marketing and engineering organizations to assess the wireless deployment alternatives. TEC assists your corporate team in balancing cost, quality, capacity and risk. TEC is your complete engineering resource to provide full-service wireless network engineering.

TEC can provide engineering services to develop your wireless project plan, provide supporting recommendations and provide implementation services to address equipment selection, network integration, network performance, risk management, and network optimization to meet business objectives. TEC accomplishes this through comprehensive services in:

TEC is a strong advocate for comprehensive, professional planning for wireless solutions to ensure that the quality, performance and reliability requirements of your business are met. Network planning is a complex process that involves analyses of the physical topology, RF performance and interference characteristics, and RF propagation characteristics of the targeted wireless implementation areas. Preliminary site selection, equipment selection, radio frequency engineering, channel planning coupled with traffic and demand analyses will determine the configuration of the network. Engineering practices at this stage of the design and implementation process will have far-reaching effects on the overall quality, reliability and long-term performance of your wireless network. The following services are available during the network planning stage.

For license exempt wireless systems design for backhaul applications, campus applications, and interior building applications, TEC will review line-of-site factors, existing systems, RF traffic and related factors to create an initial system configuration.

Project Management is a critical component for any wireless LAN.MAN or MAN implementation to ensure the overall success of any project. TEC has a proven track record of managing large-scale engineering projects, completing them on time, to specifications, to code and within budget.

TEC provides al the essential elements involved in successful project management.

TEC provides RF Engineering Services that form the building blocks for a reliable, high-quality wireless network that adheres to stringent design constraints. TEC’s engineering services area critical element in the planning process, which involves working with site acquisition and zoning restrictions, evaluating unique site design configurations, and detailing all site parameters to allow for rapid construction and installation. TEC engineers work closely with the client and all project disciplines such as civil engineering, site acquisition, construction, and program management to deliver quality implementations, enhancements and additions to the wireless network.

TEC offers site development services to enable proper construction and placement of RF wireless equipment. The services involved determine the space, power, and cabling requirements for installation. TEC professionals work with the client’s personnel and any other people, such as, landlords or building managers to establish the most cost-effective, safe, and unobtrusive deployment of radio equipment at each site. Strict adherence to local, state, and federal regulatory agency requirements, power and grounding requirements in addition to RF safety standards are ensured.

TEC provides installation and testing services to promote and support rapid deployment of the wireless network. These services include radio installation, antenna assembly and installation, and development and execution of test plans. Strict adherence to local, state, and federal regulatory agency requirements in addition to RF safety standards are adhered to throughout the installation and testing process.

TEC provides performance evaluation and system optimization services to maximize the performance of the client’s wireless network. These services include system performance measurements, analysis of measurement data, system and equipment adjustments, and refining system parameters to achieve optimum performance.

TEC offers professionally engineered solutions to support a Wireless LAN system within your entire facility or just a portion of your building. TEC’s professionally trained and highly skilled engineers and technicians can plan and implement a system to meet your service area, throughput, and security requirements.

TEC works with the client’s IT team to manage budget issues, guide the purchase authorization process, select and manage wireless equipment vendors, and integrate the wireless LAN seamlessly with the client’s computer networks and/or Internet Service Providers equipment. TEC’sr staff provides the day-to-day management of the team, creates project deliverables, sets milestones and ensures that scheduled deadlines are met. TEC’s team will perform the following tasks when designing an In-Building wireless LAN System:

Aesthetic and cost concerns make it desirable for multiple operators to share communications sites. Unfortunately, radio systems at shared sites may cause harmful interference to each other. Potential interference mechanisms are:

Whenever a radio system is added to a site, a site survey and collocation analysis should be conducted to determine whether the new wireless system will cause interference for the existing system or suffer interference from the same.

The critical component of a collocation analysis is the intermodulation study. Intermodulation Interference is produced by the mixing of transmitter frequencies at a site. As a result, system nonlinearities caused by these frequencies mix to produce other “intermodulation” frequencies that are potential sources of interference to the receivers at the site. The first step in the intermodulation analysis is the generation of an intermod “hit list”. Using stored formulas, the analysis software combines the frequencies of the transmitters at the site to determine the intermod frequencies that may be generated. When an intermod frequency is sufficiently close to the frequency of one of the receivers at the site, the program reports a “hit”. These intermod “hits” are then analyzed further to calculate predicted interference levels and to determine whether or not harmful interference will most likely occur.

Transmitter Intermodulation occurs when signals enter a transmitter and mix, and the resulting intermod frequencies are re-radiated by the transmitting antenna. Receiver Intermodulation occurs when signals enter a receiver and mix, and the resulting intermod products then appear at the receiver's demodulator input.

In addition, Transmitter Noise and Receiver Desensitization are interference mechanisms to be studied. Transmitter Noise is the name given to a transmitter radiating power outside its assigned channel bandwidth and causing co-channel interference to a nearby receiver. Receiver Desensitization is the name given to interference power from a nearby adjacent channel transmitter passing through a receiver's filters and degrading the noise floor. Transmitter Noise and Receiver Desensitization are usually only a problem when transmitters and receivers are operating on adjacent frequencies.

Also considered in the collocation analysis are Transmitter Harmonics which are integer multiples (2, 3, 4…) of the transmitter frequency. Produced by non-linearity of the transmitter system, primarily the RF power amplifier, these harmonics are potential sources of interference to nearby receivers.

Finally, any known spurious emissions of the transmitters at a site are analyzed as possible interference sources to the receivers sharing the site.

A well-designed, interference-free network allows the client to attain the desired operation of their network and associated operations. To have a successful installation and site RF survey is critical. No matter how comprehensive the computerized and paper analyses may be, there is no substitute for measuring actual RF interference and blockage at a site. Only an on-site survey can provide the complete picture.

TEC accurately measure signal level and interference at a site using computer equipment, radio equipment (computer and access point), SNR (signal to noise ratio) analyzers and Specrum Analyzers. TEC detects interference sources and enhances the modeling of the site wireless plan by simulating and testing actual operational parameters. TEC identifies and resolves the effects of Radio Frequency or Electromagnetic Interference and recommends the proper operational RF characteristics of a site.

TEC takes on-site measurements and performs analysis to create a comprehensive overview of the RF environment within the targeted deployment areas, pinpointing potential problems within the stand-alone and shared spectrums. Telecommunications network systems are a complex undertaking, and a site survey provided by an experienced, specialized team is an essential element to ensure the system will operate at optimum performance and reliability levels.

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