Research into electromagnetic compatibility in mobile communication networks with shared use of radio frequency spectrum
DOI:
https://doi.org/10.30837/rt.2026.1.224.06Keywords:
electromagnetic compatibility, radio frequency equipment, radio frequency spectrum refarming, energy equivalenceAbstract
With the development of the IMT (International Mobile Telecommunications) family of technologies, methods for assessing the conditions of their electromagnetic compatibility with each other and with other radio electronic means (REM) are also being improved, which should mainly take into account the specific features of each technology. The use of radio frequencies according to the principle of technological neutrality requires the determination of some generalized criterion for EMC. In foreign practice, as a criterion in the WAPECS project, it was proposed to use the edge mask of the BEM block, which is the “regulatory” spectral mask in the spectrum block allocated to the operator. Refarming of the radio frequency spectrum requires the development of conditions for the joint functioning of networks of several standards in adjacent frequency bands within the same range. It is also necessary to consider options for sharing DC / DB (Dual Carrier / Dual Band) carrier frequencies when aggregating in UMTS.
The article analyzes the EMC during refarming using the criterion of energy equivalence. The analysis allows us to determine the conditions for maintaining the energy equivalence of the 5G LTE network in the frequency band of the corresponding width planned to create the LTE network during refarming, namely: calculate the allowable number of 5G transmitters at each LTE site when planning sectors and MIMO configurations on them; еstimate (if necessary) the limitation of the radiation power of the 5G transmitters.
The analysis results allow us to assess and plan the possible architecture of the 5G radio network being created in specific situations. For example, if for some conditions the allowable number of transmitters at the 5G site is calculated as insufficient, it can be increased by some reduction (limitation) of the radiation power of these transmitters, while maintaining energy equivalence.
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