McWill SCDMA Wireless Access Technology Computer Science Essay

McWill SCDMA Wireless Access engine room Computer Science EssayMcWiLL is the most advanced broad closed chain wireless solution provided by capital of Red China Xinwei Telecommunications Technology. The engine room is based on SCDMA, and is known as Multicarrier Wireless information Local Loop (McWiLL). McWiLL combines SCDMAs traditional use in narrow-band theatrical role and introduces a brisk broadband data service that ties into an IP-based core meshwork. It is based on CS-OFDMA adaptive modulation, and uses energising channel allocation and smart antennas to enhance its throughput.SCDMA is a wireless penetration technology developed by capital of Red China XinweiTelecom Technology Co., Ltd. The SCDMA air interface is a national wireless access standard in China. The SCDMA products contains a full suite of advanced wirelesscommunication and networking technologies, such as smart antennas. The key technologies of SCDMA form the foundation of TD-SCDMA, an ITU Standard for 3G Wireless Communications. Earlier SCDMA products atomic number 18 narrowband products centre on fixed and mobile theatrical role applications. A new generation of SCDMA products are broadband products, Multicarrier Wireless mesh Local Loop (McWiLL), focusing on fixed and mobile voice and high speed data application.McWiLL has been positioned in several Chinese cities, including Guangzhou and Qingdao, where its been used for video, voice and data communication. McWiLL successfully served for 2008 capital of Red China Olympic Regatta, providing the high-definition, real-time mobile video services. Internationally it has been deployed in more than fifteen countries, such as USA, Cameroon, Nigeria, Ukraine, Malawi, and Mozambique.McWiLL is a TDD-based wireless access platform that combines SCDMA (synchronous CDMA), CS-OFDM (code dispersion orthogonal frequency division multiple access), MIMO and smart antennas, as well as other wireless techniques such as adaptive modulation (up to QAM64), dynamic channel allocation and make-before-break handoff, to offer a high-speed data and voice services. All these features are designed to work with any IP core network and provide up to 15Mbps of data rate using 5MHz of spectrum.http//oksunpeng.blogspot.com/In a way, McWiLL tries to incorporate all of todays wireless networking techniques into a single platform which is very peradventure why it is almost impossible for a normal human to understand.McWiLL Base Station supports the sideline features(a) Support up to 15Mbps net throughput with 5MHz bandwidth(b) Support fixed and mobile, voice and data services(c) Support up to 163dB link budget(d) Support Make-before-Break handoff and L2 tunnel(e) Support QoS and GoS features(f) Support Over-the-Air upgrade(g) Support low spot outgo (150 Watt)(e) Support VLAN, PPPoE and penetration of private networkshttp//oksunpeng.blogspot.com/2009/03/what-is-mcwill.htmlMcWill(Multi-carrier Wireless Information Local Loop) is a mobile broadband access system based on SCDMA technology platform.McWiLL TechnologySmart AntennasDynamic Channel AssignmentCode Spread OFDMA (CS-OFDMA)Time Division Duplex (TDD)Efficient VoIP TechnologyMake-before-Break Baton HandoffAdaptive ModulationQoS GoS aegis Fraud ProtectionMcWiLL System FeaturesMain ServicesFixed, portable, mobile voice and data communications.Main FeaturesBTS with 5MHz can support up to 15Mbps net throughput, each sector can support more than 300 simultaneous sessions, supporting high-speed mobility, handoff and roaming, N=1 frequency planning, and low latency.Product CharacteristicsSupport up to 100KM/H mobile speedTerminals are backward compatibleSupport efficient voice communications and low-bandwidth data.Support N=11 deployment.Products available in the following frequencies336-344MHz, 400-430MHz, 698-746MHz,1785MHz-1805MHz, 2150-2180MHz, 2525-2560MHz, 3300-3400MHzCharacteristics of Chinese Rural AreasChallengesLow subscriber density, colossal separation of villages, far away from urban commonwealthsComplicated environment (mountainous and hilly terrain)Poor facility (backhaul, power supply, etc.)Low incomeCurrent wireline/wireless communication systems cannot meet these challengesLow ARPULess than $4/month in most areasBusty duty tall traffic especially in Chinese traditional holidaysAsymmetric trafficMore incoming calls than outgoing callsLittle usage of value added servicesUnique Advantages of Deploying McWiLL whopping coverage enables fewer cell sites which are expensive in developing countries, leading to much lower Capex and Opex. N=1 deployment enables a wide area network with as little as 5MHz spectrum, leading to much lower upfront investment on spectrum which is usually quite expensive. Products with a wide electron orbit of frequency allow an performer to choose the most comprise effective spectrum to operate. Lower terminal cost and adequate data rates allow an operator to minimize the Opex and lower the entry barri ers for a subscriber. Most McWiLL terminals can support both voice and data services. GSM/McWiLL dual mode handsets/PDAs allow an end substance ab user to enjoy 3G beyond performance of McWiLL data and cost effective voice without sacrificing easy access advantages of GSM.Summary of McWiLL AdvantagesLarge coverage (up to 60Km)Smart antenna,400MHz frequency bandLow costAlready large volume, cost effective architecture, SCDMA ASIC chipset, no royalty fees, low RD cost, low manufacture cost, multiple vendors due to SCDMA AllianceHigh capacityBTS capacity 24Mbps/10MHzsupporting up to 8,000 voice subscribersOne system fits allVia flexible configuration, one system can meet the requirements of different user groups (high-end and low-end), services (voice and data), and time (current and future).Product maturity and reliability10 years RD, large scale deployment, redundancy architecture, long time operational networks, an experienced group of installation and customer support.Easy to inst all and maintenanceTerminal zero install, easy-to-use tools for customer self debugging, outside(a) access trouble shooting tools for support personnel. plumeIn this presentation, we will first give an introduction of popularwireless multiplex technologies such as WCDMA and OFDMA and then presentour McWiLL technology which is an optimal integrating of WCDMA and OFDMAtechnologies to effectively address the technical challenges of wirelessbroadband access, such as capacity, coverage, multipath fading, andintercell interference. In other words, McWiLL effectively avoids themajor drawbacks of WCDMA and OFDMA and draws their advantages of bothtechnologies. Unlike voice centrical WCDMA or data centric OFDMA (WiMax),the McWiLL wireless broadband access system can efficiently combinesboth voice and data applications. Finally, we will provide sketchintroduction of McWiLL product roadmap and application.McWiLL Fits Chinese Rural Markets Smart antenna and 400MHz frequency band allows the Mc WiLL systems to havelarge NLOS coverage (up to 60KM). Multicarrier BTS can support up to 8,000 voice subscribers having sufficiently highcapacity to support bursty traffic in rural applications. Cost effective architecture and SCDMA ASICs allow the McWiLL products to havesufficiently low cost per line ($60-80 overall cost per line including both terminal andinfrastructure). Zero install of McWiLL terminals and rich tools for self and remote troubleshootingmake it very easy to deploy the McWiLL systems in rural areas. 10 years RD, redundancy architecture and large-scale deployment (2 millionsubscribers) make the McWiLL products mature and reliable enough to deploy inremote rural areas. Integrated voice and data solutions can allow the McWiLL systems to meet bothcurrent and future service requirements of rural customers.My opinionMulticarrier Wireless Internet Local Loop (McWill) is developed by Beijing Xinwei Telecom Technology Co., Ltd. It is a wireless access technology which can c over for the very large area, its coverage can up to 60KM. Therefore it is very suitable for china because it is a big country. Its been used for video, voice and data communication and successfully served for 2008 Beijing Olympic. Even though McWill is very popular but it cannot be use for every country for example, Singapore. Singapore is a small country if using the technology of McWill, there will be a lot of wasted.