Combining cellular network, WiMAX, and Wi-Fi
Balancing cost, performance, and resource utilization drive technological convergence. Inevitably the merger of WWAN (3GPP/3GPP2 cellular network), WMAN (WiMAX), and WLAN (Wi-Fi) will form the future technological backbone of wireless broadband networks. Moreover, Mesh backhaul will encompass various wireless devices within an enormous optical fiber broadband network.
WWAN, WMAN, and WLAN possess idiosyncratic strengths and weaknesses. The access rate of the GPRS is dozens of Kbps, while Wi-Fi can range between dozens and even hundreds of Mbps. The coverage range of GPRS is tens of kilometers, compared with Wi-Fi's modest range of less than 100 meters. At the same access rate, GPRS supports a mobile speed of up to hundreds of kilometers per hour, yet Wi-Fi is notably sluggish. Considerable differences also arise in cost: the cost per bit or service charge of GPRS is remarkably high, while Wi-Fi is almost free.
While WWAN, WMAN, and WLAN have their specific core applications, the three can be mutually supplementary. Cellular networks such as GPRS/EDGE/EVDO/HSPA/LTE offer broad coverage, roaming capability, and high-speed mobility. Wi-Fi and Mobility Ad Hoc are the most suitable for high-rate and large-volume indoor data services after being upgraded to carrier-class. WiMAX can be regarded as an upgraded version of 3G Packet Switching (PS), a quasi-4G version, or an upgraded version of Wi-Fi. Integrating the advantages of both cellular and Wi-Fi networks, WiMAX represents an optimum technology for MAN coverage, with hybrid networking of micro and macro BTSs.
End users are most concerned with the balance of price and quality, and the latter is mostly judged by download rates. A convergence-oriented combination of technologies is urgently required to satisfy subscribers' increasingly stringent demands on fees, performance, coverage, and mobility. Moreover, these demands span multiple networks that are embraced by a range of different standards.
For example, subscribers can expect low cost and high speed Wi-Fi or WiMAX access in the home, while Wi-Fi hotspot coverage or WiMAX is more suitable for airports or other places where broadband access needs to have a wider range and guaranteed throughput. In areas that lack Wi-Fi or WiMAX, cellular networks can maintain basic service availability. Undoubtedly, the resulting QoE will be consistently high and seamless, and the intelligent combination of technologies will be welcomed by subscribers.
Balancing cost, performance, and resource utilization drive technological convergence. Inevitably the merger of WWAN (3GPP/3GPP2 cellular network), WMAN (WiMAX), and WLAN (Wi-Fi) will form the future technological backbone of wireless broadband networks. Moreover, Mesh backhaul will encompass various wireless devices within an enormous optical fiber broadband network.
WWAN, WMAN, and WLAN possess idiosyncratic strengths and weaknesses. The access rate of the GPRS is dozens of Kbps, while Wi-Fi can range between dozens and even hundreds of Mbps. The coverage range of GPRS is tens of kilometers, compared with Wi-Fi's modest range of less than 100 meters. At the same access rate, GPRS supports a mobile speed of up to hundreds of kilometers per hour, yet Wi-Fi is notably sluggish. Considerable differences also arise in cost: the cost per bit or service charge of GPRS is remarkably high, while Wi-Fi is almost free.
While WWAN, WMAN, and WLAN have their specific core applications, the three can be mutually supplementary. Cellular networks such as GPRS/EDGE/EVDO/HSPA/LTE offer broad coverage, roaming capability, and high-speed mobility. Wi-Fi and Mobility Ad Hoc are the most suitable for high-rate and large-volume indoor data services after being upgraded to carrier-class. WiMAX can be regarded as an upgraded version of 3G Packet Switching (PS), a quasi-4G version, or an upgraded version of Wi-Fi. Integrating the advantages of both cellular and Wi-Fi networks, WiMAX represents an optimum technology for MAN coverage, with hybrid networking of micro and macro BTSs.
End users are most concerned with the balance of price and quality, and the latter is mostly judged by download rates. A convergence-oriented combination of technologies is urgently required to satisfy subscribers' increasingly stringent demands on fees, performance, coverage, and mobility. Moreover, these demands span multiple networks that are embraced by a range of different standards.
For example, subscribers can expect low cost and high speed Wi-Fi or WiMAX access in the home, while Wi-Fi hotspot coverage or WiMAX is more suitable for airports or other places where broadband access needs to have a wider range and guaranteed throughput. In areas that lack Wi-Fi or WiMAX, cellular networks can maintain basic service availability. Undoubtedly, the resulting QoE will be consistently high and seamless, and the intelligent combination of technologies will be welcomed by subscribers.
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