(Based on the principle of Wi Fi technology, wireless city: Construction and operation of Telecom grade Wi Fi network comprehensively analyzes several necessary links of building a "Telecom grade" Wi Fi network from the perspective of operators - Wi Fi network design, planning and construction, Wi Fi network maintenance and optimization, Wi Fi business operation and marketing strategy. The book is practical, popular, thorough and instructive, and has strong guiding significance for Wi Fi technology research, network planning and construction, business developers and other relevant engineering and technical personnel. "Wireless city: Construction and operation of Telecom grade Wi Fi network" can be used as training materials and reference materials for relevant personnel in the field of Wi Fi technology of telecom operators and planning and design units, and also as a teaching reference book for undergraduate and graduate students majoring in communication, computer, electronics and information in colleges and universities.)