Why can the same smartphone connect successfully with some devices but fail with others? Why can the same device connect with some smartphones but not with others? Why does the same smartphone connect quickly with the same device at times and slowly at others? What is a Master? What is a Slave? What are Connection … Read more
Abstract:The random access process, as an important procedure for achieving UE initial access and uplink synchronization, has been simplified and modified in NB-IoT based on the LTE system. By comparing with the random access process in the LTE system, an in-depth analysis of the currently supported contention-based random access process in NB-IoT is conducted, and … Read more
Abstract: The adoption of the Discontinuous Reception (DRX) mechanism is an important means for mobile terminals to reduce power consumption. In the NB-IoT system, the low speed and low frequency of services require terminals to have extremely low power consumption. Therefore, it has made corresponding modifications to the discontinuous reception mechanism and introduced the Enhanced … Read more
Click the above “i Smart Fire Safety” to follow us! Nowadays, smoke detectors can be seen almost everywhere, whether in shopping malls, hospitals, offices, or museums. Especially in crowded places, installing smoke detectors is essential. With the continuous development of new technologies such as artificial intelligence, 5G, big data, and cloud computing, the application of … Read more
Siqing Liu, Yinggang Xie, Bolun Xin, Qiwen Deng (School of Information and Communication Engineering, Beijing Information Science and Technology University, Beijing 100101) Abstract: In response to the current issues of low efficiency, large errors, and limited range of traditional mechanical water meters, a home water intelligent monitoring system based on NB-IoT smart water meters is … Read more
The development of NB-IoT standardization in the past year of 2016 has created an urgent demand for commercial deployment. Many mainstream telecom operators, such as Deutsche Telekom and Vodafone UK, are carrying out large-scale deployments and promotions. Currently, there are three deployment options: 1. Deploying in the same frequency band as LTE 2. Deploying at … Read more
NB-IoT technology is a low-power wide-area network (LPWA) solution defined by the 3GPP standard, characterized by extremely low power consumption, wide coverage, and a large number of connections. Its device coverage can be enhanced by 20dB, and the battery life can exceed 10 years. Given the advantages of NB-IoT and the Ministry of Industry and … Read more
Li Zhaoxiong, Zhang Chaoyang, Liu Hui, Luo Xuhui (Fujian Academy of Agricultural Sciences, Agricultural Ecology Research Institute, Fuzhou, Fujian 350013) Abstract: Tea gardens located in mountainous areas usually lack access to municipal electricity, and the network signals are relatively weak. In the ecological environment monitoring equipment for tea gardens, it is necessary to use the … Read more
The new infrastructure has sounded the horn for development, bringing significant opportunities for emerging industries such as 5G and the Internet of Things (IoT), and accelerating the formation of a development pattern where technologies like NB-IoT, 4G, and 5G undertake various IoT connections.Among them, the number of IoT connections using NB-IoT is expected to grow … Read more
Ding Song, Wang Changsheng, Zheng Ping (Anhui University of Science and Technology, School of Electrical and Information Engineering, Huainan, Anhui 232001) Abstract: Comprehensive utility tunnels are the lifelines of cities. To ensure the stable and safe operation of comprehensive utility tunnels, a monitoring system based on NB-IoT wireless transmission technology is designed to address the … Read more