After reading a lot i’m looking into running a LTE network in the 13CM ham band.
This band allows some spacing for Digital communication (Which should include LTE)
For example there are these chunks in the 13cm bandplan 2355.000 2365.000 Digital Communication (10Mhz/2*5Mhz) 2392.800 2400.000 Digital Communication (5Mhz) According to the LTE frequency bands this overlaps nicely with Band 40 Band Duplex F(MHz) Common name Uplink/Downlink(MHz) Duplex Channel bandwidths(MHz) 40 TDD 2300 S-Band 2300 – 2400 N/A 5, 10, 15, 20
This should provide the possibilty to run a 5 or 10 Mhz channel in TDD mode at the respective frequency.
Both are in the range of the LimeSDR-Mini
Now i could use some advice on soft- and hardware, because documentation is either overwelming or incomplete.
As for now i found 3 capable opensource projects: 1 OpenAirInterface AOI 2 OpenLTE 3 srsLTE Which on would be most suitable for TDD in this application? What are the hardware requirements at these Rates? (ie can they run on a SBC/RPi) Any examples or other projects?
Last the uSim, to test this with an off the shelf UE(mobile phone) one would need a programmable Sim Card and programmer.
As for now i found 2: 1 Sysmocom sysmoUSIM-SJS1 (10 pack only) 2 Open cells SIM card (also has programmer) Will Both work in this use-case? Are there other sources or forum members offering them?
Any additions, comments hint and tips are welcome.