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有线网再好,它的覆盖范围也要受到线路的限制。有些场合,不可能在现场提供物理连线,例如在医院的一些部门、仓库和餐厅。目前,无线网已经发展为一项实用的技术,它可以在病人身边看到病理检查的结果,零售商可以把收款机自由地移来移去。无线网有广阔的应用前景。一般地,无线网在实际使用中会有许多问题,要解决覆盖范围、传输能力、干扰、重量、成本和安全等问题。到目前为止还看不到一种所有性能都最佳的方案。现在,在提供无线网产品的厂商中,还没有哪一家能提供语音传送与数据传送集成的解决方案。虽然IEEE
Even the best of the cable network, its coverage also subject to line restrictions. In some cases, it is not possible to provide physical connections in the field, for example, in some hospital departments, warehouses and restaurants. Nowadays, the wireless network has evolved into a practical technology that allows the patient to see the result of a pathological examination and retailers can move the cash registers freely. Wireless network has broad application prospects. In general, there are many problems that wireless networks have in actual use to solve the problems of coverage, transmission capacity, interference, weight, cost and security. So far I have not seen a solution that has the best performance of all. Now, none of the vendors that offer wireless networking products offer solutions for integrated voice and data delivery. Although IEEE