期刊
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
卷 6, 期 2, 页码 1122-1131出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TGCN.2021.3132081
关键词
Diversity reception; Receivers; Interference; Internet of Things; Batteries; Stochastic processes; Geometry; Frame repetition; Internet-of-Things; stochastic geometry; energy-consumption; diversity combining
资金
- Australian Government Research Training Program (RTP) Scholarship
This paper evaluates the impact of transmission repetition on the coverage probability and energy cost of IoT links, and proposes two diversity combining techniques. The analytic framework provided can assist network designers in maximizing network coverage while minimizing device energy expenditure.
Novel Internet-of-Things (IoT) access technologies are emerging as part of the next generation cellular networks. These technologies are specifically oriented towards energy-limited IoT devices that are scattered far away from their serving base station. One of the key methods of achieving deep coverage is via repeated transmissions of data. However, repetition leads to higher energy consumption and reduces the device battery-lifetime. Thus, a trade-off between coverage and energy consumption exists and requires careful investigation. This paper evaluates the effects of transmission repetition on enhancing the probability of coverage and the cost of the incurred energy. Using an empirical repetition profile based on traffic load and device distance from the base station, we derive the coverage probability and energy profile models for IoT links that utilize two different diversity combining techniques. In particular, we focus on two common diversity combining that are: 1) Selection Combining (SC) and 2) Maximal Ratio Combining (MRC). We utilize tools from stochastic geometry to formulate an analytic framework that compares these two combining methods. This framework can aid network designers in jointly maximizing the network coverage while minimizing the energy expenditure of devices.
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