Tài liệu In-building Wireless docx

PLANNING GUIDE In-building Wireless A Deployment Guide for Wireless Service Providers Page 2 Welcome to the In-building Wireless Deployment Guide for Network Managers What’s inside counts. That statement sums up customer expectations about wireless service inside offices, homes and public places such as malls, hospitals and subway stations. Wireless service providers have a vested interest in meeting those expectations: When consumers and business users are convinced that indoor coverage is reliable and nearly ubiquitous, they’re far more likely to believe that their mobile phone can be their only phone. That belief helps wireless carriers’ bottom lines by increasing average revenue per user (ARPU). Many wireless service providers are aggressively expanding their in-building coverage. In fact, this trend is a major reason why the in-building market will be worth $1.3 billion by 2009, according to a June 2006 report by Visiongain, an independent analyst firm. The report notes: “The need for improved voice quality in homes, offices and other buildings, as well as increasing usage of mobile data networks indoors, are driving this growth of cellular and wireless in-building solutions. Upwards of 70 percent of 3G data traffic originates indoors and adopting the right strategy can help operators alleviate network capacity issues while at the same time boost data ARPU and reduce churn through service differentiation.” Other analyst firms are equally optimistic. For example, a December 2006 ABI Research report forecasts the in-building market to grow 20 percent annually, to more than $3.6 billion by 2011. In-building voice and data usage have steadily increased over the past several years. In 2005, 67 percent of all business users’ wireless data sessions and voice calls already were made indoors, according to a Strategy Analytics survey. Those usage habits have become more common since then, and they highlight the importance of reliable, seamless indoor coverage for wireless service providers targeting the enterprise market. Page 3 The purpose of this guide is to provide you with an understanding of the issues surrounding in-building wireless solution implementation, including: • Whatarethechallengesindesigningandexecuting in-building wireless projects? • WhatfactorsaffecttheirROIandongoingcosts? • Howcanmultipleentitiesshareconstructionand operational costs? • Whatisthebusinesscaseforin-buildingwireless? It is our goal to help you implement more solutions seamlessly, economically and quickly. If you don’t have the answers to some of these questions, or if you lack a complete understanding of in-building wireless, this guide is a great place to start. Charting the Future Direction of In-building Wireless This In-building Wireless Guide is designed as a hands-on reference document. We invite you to share this guide with your staff and use the information to build your own “Blueprint for In-building Wireless Success.” It has the potential to help you and your staff in the following ways: • GainaholisticapproachtoRFplanningandsolution integration. • Identifyopportunitiesforusingin-building wireless to improve your competitive position and bottom line. • Aidsolutionselection. • Minimizeimplementationdelaysandcosts. How to Use the Deployment Guide: Sections 1 through 4 The guide is divided into four easy-to-navigate sections. Although this format allows you to pick and choose which sections to view, the most effective way to use this document is to work through each section in order. You will be asked to complete an in-building wireless audit, which offers the dual benefit of allowing you to document your current situation and providing ADC with the necessary information to answer your tough indoor wireless questions. This audit will ultimately streamline the process, creating faster time-to-market and increased customer satisfaction. The guide also provides you with insight into design choices for effective in-building wireless infrastructure, as well as case histories from real-world indoor wireless implementations. Section 1 Auditing Your In-building Wireless Deployment Section 2 Service and Technology Considerations Section 3 Your Blueprint for In-building Wireless Success Section 4 Case Studies: In-building Wireless Deployment Scenarios Note: You will encounter many acronyms throughout this document. Although they will be defined along the way, an acronym key is provided in the appendix. In-building Wireless: A Deployment Guide for Wireless Service Providers In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 4 Section 1: Auditing Your In-building Wireless Deployment A successful in-building wireless deployment begins with building a solid foundation. Your partner requires a thorough understanding of your needs and priorities. In Section 1, we examine the objectives of your in-building wireless deployment, objectives of the venue or other stakeholders, your network infrastructure considerations, and the operational requirements you may face. Typical preliminary questions include: Product Considerations 1.) At what stage is your in-building wireless project? oActivating service o Vendor selection oCollecting information from vendors oSecuring funding/budgets oOther 2.) What business challenges led you to consider in-building wireless? (Check all that apply.) oCustomer service for existing Enterprise o Gain MOUs public venue o Stressed Macro (capacity, pilot pollution) o Hostneutral/plantolead o Contractual requirement o Other, please describe ______________________ _________________________________________ 3.) What are the most critical in-building wireless challenges that you want to overcome? (please describe) _____________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ 4.) What process will you use to select vendors? oRFI oRFP/RFQ o Sole source 5.) What is your timeline for deploying in-building wireless? (See Project Timeline in appendix) oDeploying now oIn the next 6 months oIn the next year oConsidering / contract or pending funding 6.) What are your preliminary solution preferences? oActive Distributed Antenna System (DAS) oPassive DAS oRepeater oPico or microcell oOther __________________ Facility and Installation Considerations 7.) What is the type of facility? (Check all that apply.) oOpen/warehouse oIndustrial/Manufacturing oCubed office oDrywall office oHi-risebuilding oGovernment building oHospitalbuilding oMall oAirport oConvention center oStadium/Arena 8.) What is the estimated number of subscribers within the venue? __________ 9.) Howmanybuildingsareinthisfacility? __________ 10.)Whatistheapproximatesizeofthisfacility? (list per building) ____________ square feet ____________ square feet ____________ square feet ____________ square feet 11.)Howmanyfloorsdoesthisfacilityhave? _________ If more than one venue, please describe each. ____ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 5 12.) Are floor plans available? oYes o No 13.) Is existing cable infrastructure available? o No o Yes, single-mode fiber o Yes, multi-mode fiber o CAT3/5 cable o CATV o Coax 14.) Is installation of conduit/innerduct required?  o No, existing oYes, why required _________________________ _________________________________________ 15.) Are plenum-rated cables required? o Yes o No 16.) Are dust tents/partitions required (clean room environment)? o Yes, describe where and why ________________ _________________________________________ _________________________________________ _________________________________________ o No 17.) Are there any special work instructions? o Union labor required o Incumbent installer o Building restricted access, security o Off hours o Asbestos or other environmental issues o Other work restrictions, please list ____________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ 18.) Is high lift equipment required for installation? o Yes, describe coverage areas ________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ o No 19.) Are there any special installation requirements? (Examples could include architectural, aesthetic and historical considerations.) o Yes, please describe ________________________ _________________________________________ _________________________________________ o No RF Considerations 20.) What is your design goal in terms of dBm? _______ _________________________________________ _________________________________________ 21.) Which bands are in use? And what is the number of RF carriers per band? o700MHzpublicsafety_______________ o800MHzSMR_______________ o 800MHzcellular–Aband_______________ o 800MHzcellular–Bband_______________ o 900MHzSMR_______________ o 900MHzGSM_______________ o 1800MHzDCS_______________ o 1900MHzPCS–Aband_______________ o 1900MHzPCS–Bband_______________ o 1900MHzPCS–Cband_______________ o 1900MHzPCS–Dband_______________ o 1900MHzPCS–Eband_______________ o 1900MHzPCS–Fband_______________ o AWS1700/2100MHz_______________ o 2100MHzUMTS_______________ oOther services_______________ In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 6 22.) What is the access protocol and number of RF carriers? o TDMA_______________ o GSM-TDMA_______________ o CDMA_______________ o WCDMA/UMTS_______________ o iDEN_______________ 23.) Does this project require support for multiple service providers and/or multiple access protocols? o Yes, please describe ________________________ _________________________________________ _________________________________________ _________________________________________ o No 24.) Are there any other in-band services or known interferers? o Yes, please describe ________________________ _________________________________________ _________________________________________ _________________________________________ o No 25.) What is the RF source? oRemote off-air interface oLocal BTS/Node B interface onanoBTS(IP–picofeed) oRemote BTS feed It is important to identify your top priorities when selecting a solution. A partner like ADC who offers a wide-range of products from repeaters, indoor DAS, outdoor DAS, pico and microcells, structured cabling, andserviceswillbeabletocustomizeasolutionbased on your priorities. Section 2: Service and Technology Considerations Quality of service (QoS) can be a powerful market differentiator. Seamless, reliable in-building coverage is a key component of a wireless service provider’s overall QoSstrategy.Herearesomekeyconsiderationswhen developing and executing in-building wireless projects: Create and Maximize Revenue Opportunities Customers can’t use what’s not available. Simply put, revenue opportunities are often lost when customers frequentareas–suchasinsideofficebuildingsand malls–wherethere’softennosignaloronethat’s marginal. With growing consumer reliance on mobile communication devices and the increasing sophistication of available services particularly with business users, in-building coverage and capacity is becoming the primary focus for network improvement. Wireless operators have two primary types of deployments, both of which can benefit from in-building wireless solutions. The first type is public areas, where reliable, seamless coverage indoors and out is key to attracting and retaining consumers, adding incremental MOUs and improving QoS. The second primary type is private areas, such as office buildings and campuses. Good in-building coverage is an asset for wireless operators targeting the enterprise customer and displacing wireline services. In both deployment types, wireless operators can use in-building systems to build consumer confidence that the network providing those voiceanddataservicesisreliableandnearlyubiquitous– indoors and out. In some cases, providing an in-building wireless system may be the only way to land a major customer. A prime exampleishealthcare:Historically,hospitalsandother health care facilities typically required that employees’ and/or visitors’ phones be shut off in many areas, due to concerns about interference with medical equipment, obviously disturbing or interrupting service. Those policies significantly reduce ARPU. But a well-designed in-building wireless system allows mobile phones to remain on in more areas by reducing the handset power to the minimum necessary to maintain a reliable connection. That can mitigate concerns about interference with medical equipment, leading to relaxed policies and in turn increasing ARPU. Reliable indoor coverage also increases the value of wireless in the eyes of health care CIOs and IT managers. More importantly, medical staffs are able to migrate to more sophisticated devices and communicate reliably. In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 7 Reduce Overhead Costs An in-building wireless system can reduce overhead costs in a variety of ways. For example, it can reduce the traffic load on the macrocellular network to the point that additional base stations may not be necessary. Considering that a new base station can cost $250,000 or more, with backhaul and site leases adding to that cost, the savings can be significant. Another example is how solid indoor coverage can improve data performance. If bandwidth-intensive applications such as streaming multimedia have access to a good signal, it makes for a better user experience. Just as important, a good signal reduces the number of lost and corrupted packets, in turn reducing the number that have to be resent. As a result, the operator may not need to upgrade its network capacity because the current infrastructure isn’t wasted on unnecessary tasks such as resending packets. Those savings also free up capital that can be spent on revenue-generating projects. In-building systems also can be a cost-effective way to accommodate high voice and data usage. For example, instead of splitting macro cells or adding capacity to macro cells, deploying an in-building system can offload some of that traffic. That approach frees up capacity on the macrocellular network improving the customer experience indoors and out. Finally, reliable indoor service also reduces customer complaints and churn, so the operator may have lower customer-acquisition costs because it isn’t constantly trying to replace customers who have left. Fewer customer complaints also can reduce the need to staff up call centers, issue service credits or both. A side benefit of reduced churn and lower customer-acquisition costs is that investors closely monitor these metrics when assessing a wireless carrier’s competitive position. Identify All Variables Proposals are only as accurate as the information on which they’re based. Identifying all variables up front is the best way to avoid change orders, which can cause project costs to spiral out of control, undermining the business model. Overlooking variables also can delay time-to-market and the ROI. The worst-case scenario is a lengthy work stoppage caused by variables that should have been identified up front. Site surveys are highly recommended for identifying structural and environmental variables. Table 1 lists some common environmental factors to consider in old and new buildings. Table 1: Old Buildings vs. New Buildings • Olderbuildingsmayhaveasbestos,whichrequires special consideration when, for example, the material is in areas where cables must be pulled or where holes must be drilled. • Newerbuildingsoftenhavefloorplansthatare available in electronic form, such as Auto-Cad drawings.However,it’simportanttocheckwhether those plans have been updated to reflect any remodeling or additions since the initial construction. • Inbotholdandnewbuildings,checkwiththeIT department or other entity that’s likely to know where fiber is and isn’t available, as well as type(s) used. If existing conduit doesn’t have extra room for additional fiber pulls, determine the amount that will have to be added. Also, determine whether additional conduit isnecessaryonlyonverticalsoronhorizontals,too. Besides fiber, identify other infrastructure that can be leveraged in order to reduce costs and installation time. Examples include the facility’s Cat5 plant and local power. Old Buildings New Buildings Signals typically propagate through floors In-building signals stay inside, while macrocellular signals stay outside, due to attenuating features of building materials such as foil-faced insulation and metallic window tinting Higherlikelihoodof core drilling required; not designed for cable infrastructure; no Telco closets Generally facilitate cable installation; interstitial space; typically have stacked Telco closets Fiber runs may be longer than anticipated (no way to get there from here) Higherlikelihoodofavailable fiber backbone Higherlikelihoodthatfacility has hard-to-install ceiling construction such as hard pan Drop-ceiling and/or air duct ceiling more common May have historic preservation requirements (e.g., protect woodwork) and aesthetic requirements; Asbestos abatement Higherlikelihoodof clean-room requirements Often have many additions/ exterior walls on the interior; floor plans may show the facility as one complete floor when in reality they are separate facilities adjoined; for this circumstance there is no way to quickly/efficiently model Typically have Auto-Cad drawings, but often not updated when facility changes occur In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 8 Focus on Solutions A sound and ideal in-building wireless solution typically requires propagation analysis, system design, site surveys, coordinationofinstallationservices–whichmayinclude unionlaborandvalue-addedresellers(VARs)–andall hardware. The solution also should include accountability, with clearly defined benchmarks for measuring success. Hence,itisimportanttochooseapartnerthat’scapable of providing a comprehensive, turnkey solution. There are several technical solutions available for in-building wireless coverage and capacity. They include: pico and microcells, high and low powered repeaters, passive coax-based transport, and low and high powered active DAS. Before selecting a specific solution or combination of solutions, it is important to consider the following: • Istheneedcapacity,coverage,orbothinnature? • Whatisthesizeandtypeofvenue? • Howmanywirelessserviceprovidersdoesthesolution need to support? A sound understanding of these needs along with the reconciliation of the business criteria and venue requirements, will guide you to the appropriate technologies. Determine Ownership and Set Expectations Different environments have different requirements. That goes without saying, but it bears repeating because in some cases, the landlord or enterprise may want an in-building solution that’s operator- and/or technology- agnostic. A related issue is which entity pays for and owns the in-building system. It’s critical to identify ownership and the owner’s requirements up front because they affect design considerations. For example, sharing power amplifiers may require additional remote units, which translates into additional hardware and labor costs. By comparison, a discrete system may be easier to design and manage because it’s easier to mitigate interference and eliminates ownership and maintenance questions. Identifying the variables discussed earlier in this section is a highly effective way to set expectations before the project gets underway. Setting expectations also avoids scope creep. Other important considerations are: • Identifyandagreetoallrequirementsupfront. Once the project is underway, changes and additions become change orders, which can be expensive and time-consuming. • Thefacilities-maintenancedepartmentcanbea good source of information about ceiling types because they’ve encountered them while installing or maintainingHVACductwork.Thisdepartmentalso should be able to provide information about what’s above ceilings. • Notetheceilingheightsinallareaswherein-building coverage is required. Do they require more than just a standard 8- or 10-foot stepladder to reach? If so, factor in additional costs, such as renting scissor lifts. Check with facilities management to see if a scissor lift is already on site and can be borrowed for the project, although insurance requirements might not allow it. • Identifyuniquebuildingfeaturesthatwillaffect coverage and propagation, such as long hallways with offices on both sides, or banks of metal lockers. Hospitalstypicallyhaveafewroomswithlead-lined walls, such as X-ray rooms. • Lookforcleanrooms,whicharecommoninawide variety of facilities, ranging from hospitals to hotels to data centers. A good rule of thumb is that the older the facility, the more likely that it will include areas that can’t be covered in dust, such as when drilling holes, or floors tracked by a scissor lift. Factor in time and budget for preventive measures such as tenting, which generally require a two-person team. A two- person team more than doubles labor costs and the project’s time frame. • Whereverpossible,notethebuildingmaterials.For example, plaster walls typically have embedded wire mesh, which reflects signals at cellular frequencies suchas850MHzand1900MHZ.Bycomparison, drywall typically reflects only a small percentage of the signal. Offices built over the past few decades tend to have windows with metallic tinting, which routinely attenuate signals by 20dB or more. • Lookforpartsoftheenvironmentthatcanbemoved orreconfigured,suchaspalletracksandmezzanines. These typically are made of steel, which means that they’ll affect propagation. So if they’re moved or removed, signal coverage almost certainly will be altered–andnotnecessarilyforthebetter.Evenlarge wooden benches, which may absorb signals, can be a factor. Another key consideration is installation labor, which typically is 40-50 percent of the system’s cost. Refer to the audit in Section 1 for labor-related considerations. It’simportanttorecognizethatsomeorallofthese variables might exist in your project. Identifying as many of them as possible as early as possible significantly reduces the chances that you’ll be surprised later on by delays and additional costs. In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 9 Examples of this may include: • Changestoadesiredcoverageareasuchasadding coverage to a parking garage or facility area; • ChangetotheRFsourcei.e.,basestationon-sitevs. off-air affects equipment configuration and physical placement in the venue; • Misunderstandingofexistingcablepathlocation may result in the need to modify RF plan or pull new cable. If changes are required, there are several options: • Oncethepurchaseorderisissued,anythingoutside the proposal on which it’s based should be managed separately. Outside requirements may cause the project to be put on hold so that the plan can be amended. • Havetheenterprisepayfortheadditionalmaterials and labor required to make the change. Or revamp the design and negotiate sharing the cost of the changes. • Youmaymodifytheplanbutyouarenotgoingto modify the total allocated dollars. By sharing the costs of the in-building solutions, it may complicatethepre-workbutminimizesstakeholders expenses and facilitates communication. All parties with monies invested are sure to lobby for their needs, ultimately satisfying all stakeholders. Section 3: Your Blueprint for In-building Wireless Success We are now able to begin a blueprint for a successful in-building wireless system. This blueprint should account for all variables that will affect the system’s construction and operational costs, including: • Integrationwithoneormoremacrocellularnetworks; • Accesstocableinfrastructure; • Theabilitytousealternativetransporttechnologies such as Millimeter Wave and WDM; • Architecturedetermination  • Theeffectsofcapacityonthedistributionsystem;  • Anarchitectureplanthatdeterminesdiscrete or shared systems; and  • Theimportanceofmodular,scalable flexible products. In this section, we will show you how the choices you make today will determine your in-building success tomorrow. We’ll guide you through the architectural decisions and equipment selections that impact the short-term and long-term success of your in-building wireless system. There are a variety of coverage and capacity solutions on the market. Different technologies, such as digital transport, direct modulated RF/analog, or analog transport that converts to IF, offer different architectural and performance benefits. Identifying your priorities will help match the best product for the application. Things to consider may include: • Minimizingtotalcost • Easeofinstallation • Expandability • Edge-to-edgebandwidthflexibility • Abilitytouseexistingcableinfrastructure • Abilitytotransportoverlongdistances (in and between facilities) • RFperformance;minimizingsystemnoiselevel • Alarm&management • Quicktimetodeploy(systemturn-up) • Discreteantennalocations • Blanketcoverageorhole-fill In-Building Wireless: A Deployment Guide for Wireless Service Providers Page 10 Figure 1: Large Facility Installation Assessing the Transport Options Fiber is an ideal backbone for in-building wireless systems. The obvious reasons include its bandwidth capabilities–whichareamajorassetforsupporting 3G’sdata-intensiveapplications–itsrelativelylowcost and the large installed base that in-building systems can tap into. A less-obvious benefit is immunity to interference: Fiber cables don’t emit RF, nor are they susceptibletoRF.Likewise,digitizedRFmitigatesany RF interference concerns (e.g., intermods, harmonics). This provides more design and installation flexibility. For example, the in-building system’s fiber can be run in the same conduit as coax that’s supporting a mall’s digital signage installation. Immunity to interference also can reduce troubleshooting costs. For example, suppose that in a new building under construction, the design calls for some of the fiber to be routed through elevator shafts. After construction is complete, it turns out that the elevator motors produce more electrical noise than expected. If copper had been used for the in-building system, expensive, time- consuming changes might be required in order to work around that interference. But fiber is unaffected by the electrical noise. Additionally, a system capable of supporting single- and multi-mode fiber offers increased flexibility. It’s not uncommon for both types to be available in the same facility, depending on its age and the number of IT projects over the years. So support for both major types provides flexibility and reduces the need for pulling new fiber within or between buildings on a campus. The ability to mix and match single-mode and multi-mode fiber provide design flexibility and cost savings. Ensuring Flexibility for Future Growth Part of the reason for deploying an in-building wireless system is to support mobile usage as next generation devices and mobile offices proliferate. As a result, the system should be flexible and scalable in order to accommodate increased usage and growth as RF coverage and capacity needs change. One way to achieve that flexibility is by using expansions, which make it easy to grow the system coverage. Expansion or Remote units may be added as an application grows. Figure 1 illustrates this design. Service Expansion A system can expand in two ways. First, the coverage area may grow. This requires a solution that can accommodate additional equipment added to the infrastructure to distribute RF in areas that were not included in the original design. For example, adding coverage to a parking garage, basement, or other area of a building. Adding capacity is more complex a matter. If adding additional frequencies to a system is required, your solution will need to support the additional capacity via the equipment already in place. In those circumstances, the initial RF plan should consider not only the capacity needs today, but what growth could be expected in the coming years. If that is not done, the footprint of each antenna coverage area may shrink and additional equipment and infrastructure may be required-ultimately adding cost. Finally, if a system requires an addition of a frequency not supported by the initial design, a solution that accommodates that added frequency and the cable backbone is most desirable. BTS/Off Air Interface Multimode FiberSinglemode Fiber SM SM MM MM RU RURU RU Host Unit RURU RU RU RU RU Expansion Unit RURU RU RU RU RU Expansion Unit Growth [...].. .In-Building Wireless: A Deployment Guide for Wireless Service Providers Support for Multiple Technologies Some in-building wireless projects require support for multiple air interfaces or service providers (known as host-neutral systems) As a result, it is often desired for example that the in-building system, bring in signals from CDMA and GSM... equipment to install In 2001, four major cellular carriers (Verizon, Nextel, Sprint, and AT&T Wireless) approached the Venetian about installing the first in-building wireless system in Las Vegas, and the hotel’s chief technical officer, Steve Vollmer, quickly agreed Page 16 In-Building Wireless: A Deployment Guide for Wireless Service Providers Deployment and Maintenance Flexibility and Performance Over... hotel team members get such coverage In-Building Wireless: A Deployment Guide for Wireless Service Providers Appendix Acronym Key You will encounter many acronyms throughout this document Although they will be defined along the way, the following acronym key is provided as an ongoing reference tool ICS In-building Coverage Solution; Refers to ADC in-building mobile wireless coverage products IF Intermediate... high quality performance characteristics You partner can model an application both ways to illustrate your design options and total cost of solution In-Building Wireless: A Deployment Guide for Wireless Service Providers Section 4: Case Studies: In-building Wireless Deployment Scenarios Studying real-world deployments is a good way to understand and anticipate the issues that your project might include... safety wireless coverage was spotty, with dead spots and poor reception plaguing certain parts of the facility Although some cellular carriers had deployed their own, in-building wireless distribution systems to boost their signals, other carriers relied on nearby outdoor cell towers Cellular Coverage Requirements Some public facilities rely solely on wireless service carriers to deploy and manage in-building. .. fiber-based backbone for all voice, video and data traffic In the third phase, HAIA built value-added services, including Wi-Fi access and pervasive cellular and public safety wireless coverage Page 14 In-Building Wireless: A Deployment Guide for Wireless Service Providers The Solution The evaluation team eventually chose the InterReach Unison® system The Unsion system uses a familiar hub-and-spoke architecture,... program, HAIA boasts a cellular wireless infrastructure with service and coverage second to none—an asset that's only fitting for the world's largest passenger airport Thanks to ongoing improvements and premium technology partners, Hartsfield-Jackson Atlanta International Airport is poised to continue its industry leadership Page 15 In-Building Wireless: A Deployment Guide for Wireless Service Providers... offered to install a system to eliminate them, we were all for it.” Selecting The Right System A typical in-building wireless system incorporates an on-site carrier base station plus a hub, distribution cabling, and remote antennas that supply distributed coverage There are several choices in in-building wireless systems, but the Venetian’s cellular providers had some very specific technical requirements:... including new surgical wards • Business models The Digivance system allowed U.S Cellular to create an in-building rate plan for UW Hospital employees This benefit helps U.S Cellular attract and retain these high-ARPU customers and drive additional revenue In-Building Wireless: A Deployment Guide for Wireless Service Providers Hartsfield-Jackson Atlanta International Airport The Challenge Hartsfield-Jackson... frequency band OR separated by wireless service provider Separating systems by wireless service provider offers the carrier control over the signal distribution as their competitors make changes to the macro (the RF feeding the DAS) and alarm and management functions Table 2: Key Attributes of Shared and Discrete Power Amplifier Designs Wireless Service Provider Shared Amplifier Wireless Service Provider . understanding of in-building wireless, this guide is a great place to start. Charting the Future Direction of In-building Wireless This In-building Wireless Guide. in the appendix. In-building Wireless: A Deployment Guide for Wireless Service Providers In-Building Wireless: A Deployment Guide for Wireless Service