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Wireless Data Technologies reference phần 6

và trong tương lai có thể được nâng cấp đến 2 Mbit / giây. Đối với tỷ lệ dữ liệu 4G lên đến 20 MB cho mỗi thứ hai được lên kế hoạch. Đây là khoảng 2000 lần nhanh hơn so với tốc độ dữ liệu di động hiện nay, và khoảng 10 lần nhanh hơn so với tốc độ truyền lên kế hoạch trong phiên bản cuối cùng của điện thoại di động băng thông rộng 3G. | 108 WIRELESS DATA NETWORKS subscribers without providing access to the public at large. Each paying subscriber authenticates with Remote Authentication Dial-In User Server RADIUS upon entering a coverage area within a participating facility partner. 8.8.4.2 Network Topology The ORiNOCO Wireless Client network will be built with a single purpose in mind - to provide Internet access to subscribers. Any services available through a traditional dial-up Internet connection are available to the authorized subscriber. This includes access to the subscribers corporate network intranet provided it is currently accessible over the Internet using VPN technologies such as PPTP SSL or ssh. The basis of the network at the facility partner locations is straightforward. It consists of a router Ethernet switches and wireless access servers. The elements that add complexity to the design are the variations in architecture and building material of each of the facilities to be covered. 8.8.4.3 Facility Partners The facility partners consist of several different groups that include hotels airports conference centers and multi-dwelling units. 8.8.4.4 Facility Equipment The equipment utilized at each facility partner is outlined in Figure 8.4. 8.8.4.5 Power A single 110VAC 20 amp outlet is required in the Main Distribution Frame MDF and Intermediate Distribution Frame IDF closets. 8.8.4.6 RF Design Due to the specific nature of Radio Frequency RF communication the kind of physical environment in which ORiNOCO Access Server will be installed is important. In buildings we generally can distinguish three types of environments THE 802.11 STANDARDS WLAN OR WI-FI 109 Components and Part Numbers Product Part Number Lucent Access Point 450 router AP-ET1-8010 Cajun P333T stackable switch 24 ports 108563123 Cajun P120 stackable switch 12 ports Orinoco AS-1 2000 wireless access server 407-0031794M Orinoco WaveLAN Card Silver PC24E-H-FC Orinoco External Antenna PowerDsine power hub 12 ports .