There is plenty of valuable information transmitted over the air interface in mobile networks, but none-network-side devices need to infer them for their own benefits. For example, dynamic spectrum access devices infer the spectrum occupied by primary users for locating spectrum holes, and video streaming applications estimate the available cell bandwidth to optimize the video encoding. Thus, we design a tool U-CIMAN to decode such network side information to make them available at the user end. The details are covered in the IEEE Infocom 2020 paper 'U-CIMAN: Uncover Spectrum and User Information in LTE Mobile Access Networks'.

When we apply U-CIMAN to LTE spectrum tenancy measurement, the experiments are conducted in two setups. In the first experiment setup, we use U-CIMAN to measure the spectrum usage of an LTE system fully under our control, as shown in the figure, where the LTE system is composed of Amarisoft LTE users and network devices. In the second setup, U-CIMAN is applied to measure the commercial LTE cell with the best signal strength near our lab.

We are happy to share our code and documents with you. We only ask that any published research from using our code include a reference to the corresponding paper.
Please download U-CIMAN code:U-CIMAN

1. Rui Zou and Wenye Wang, " U-CIMAN: Uncover Spectrum and User Information in LTE Mobile Access Networks, ", in Proc. of IEEE INFOCOM, July 2020.
2. Rui Zou and Wenye Wang, " Change Detection Based Segmentation and Modeling of LTE Spectrum Tenancy, ", in Proc. of IEEE GLOBECOM, December 2019.
3. Kumar, Swarun and Hamed, Ezzeldin and Katabi, Dina and Erran Li, Li, " LTE radio analytics made easy and accessible, ", in ACM SIGCOMM Computer Communication Review, Vol. 44, No. 4, pp. 211-222, 2014.
4. Bui, Nicola and Widmer, Joerg, " OWL: A reliable online watcher for LTE control channel measurements, ", in Proc. of the 5th Workshop on All Things Cellular: Operations, Applications and Challenges, 2016.
5. Gomez-Miguelez, Ismael and Garcia-Saavedra, Andres and Sutton, Paul D and Serrano, Pablo and Cano, Cristina and Leith, Doug J, " srsLTE: an open-source platform for LTE evolution and experimentation, ", in Proc. of the Tenth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization, 2016.

• The srsLTE library.
• The Amarisoft LTE equipment.
• The USRP kit for our experiments.