Full name: 2021 The 5th International Conference on Telecommunications and Communication Engineering Abbreviation: ICTCE 2021 Beijing, China, December 10-12, 2021 More details, please visit: http://ictce.org/ ICTCE focus on advanced research topics in the field of telecommunications and communication engineering with both wireless and optical technologies. Those advanced topics including the topics of emerging technologies of wireless communication and networks, optical communications, information and network security, internet of things, etc. Those advanced research topics are taking the lead and representing the trend of the recent academic research in the field of communications and networking. It is expected that the collection and discussion of the research papers with those advanced topics at ICTCE conference, will further promote high standard academic research in the field and make a significant contribution to the development of economics and human society. *Publication and Indexing: Accepted papers of ICTCE2021 will be published by ACM conference proceedings (ISBN: 978-1-4503-9031-6), which will be index by Ei Compendex, Scopus etc. *Call for Papers--http://ictce.org/cfp.html Topics are interested by not limited to the following: Next generation (5G) mobile communications Heterogeneous networks and small cells Network technology for safety, amenity and disaster response Network reliability and safety Big data networking Protocols, architectures and applications for the Internet of Things Network functions virtualization and software defined networking Green communications and energy efficiency Self - Assisting/self - deploying networks Cognitive radio and networks Wireless sensor and actuator networks D2D and M2M communications Ad - hoc communications Cooperative communications Multi - antenna and beamforming systems ... *Conference History: ICTCE 2020 | Singapore-online conference Online soon ICTCE 2019 | Tokyo, Japan ISBN: 978-1-4503-7180-3 Online: https://dl.acm.org/doi/proceedings/10.1145/3369555 (Ei Compendex & Scopus) ICTCE 2018 | Beijing, China ISBN: 978-1-4503-6585-7 Online: http://dl.acm.org/citation.cfm?id=3291842 (Ei Compendex & Scopus) ICTCE 2017 | Osaka, Japan ISBN: 978-1-4503-5315-1 Online: http://dl.acm.org/citation.cfm?id=3145777 (Ei Compendex & Scopus) *Submission: By online submission system: http://confsys.iconf.org/submission/ictce2021 *Contact: Ms. Hedy Hu Conference Secretary Email: ictce@academic.net Tel:+86 1301 8222 220 http://ictce.org/ Wechat: iconf-cs