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The ubiquitous deployment and restricted consumption are the requirements restricting the de-velopment of Internet of Things.Thus,a promis-ing technology named Internet of Lamps(IoL)is dis-cussed in this paper to address these challenges.Com-pared with other communication networks,the re-markable advantage of IoL is that it can make full use of the existing lighting networks with sufficient power supply.The lamps can be connected to the In-ternet through wired power line communication and/or wireless communication,while the integration of inte-grated sensing,hybrid interconnection,and intelligent illumination is realized.In this paper,the IoL is dis-cussed from three aspects including sensing layer,net-work layer,and application layer,realizing the com-prehensive upgrade based on the conventional commu-nication and illumination systems.Meanwhile,several novel technologies of IoL are discussed based on the requirements of sensing,communication,and control,which have put forward practical solutions to the is-sues faced by IoL.Moreover,the challenges and op-portunities for IoL are highlighted from various parts of the system structure,so as to provide future insights and potential trends for researchers in this field.