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随着无线技术的发展和各种无线业务的引进，对无线设备的带宽和使用范围提出的要求越来越高：带宽要求从过去的IMbpS上升到SOMbps，使用范围要求从过去1～IO米上升到SO～11米。尽管WLAN（无线局域网）方案解决了扩展带宽和范围的问题，但实现这一方案的成本仍然是一个值得考虑?
With the development of wireless technology and the introduction of various wireless services, the requirements on the bandwidth and the use range of wireless devices are getting higher and higher: the bandwidth requirement has risen from the past IMbpS to the SOMbps, and the use range requires to rise from the past 1 to 10 meters To SO ~ 11 meters. Although the WLAN solution solves the problem of extending bandwidth and range, is the cost of implementing this solution still worth considering?