On 19 November 2014 an agreement between the Office of Electronic Communications and the Ukrainian State Centre of Radio Frequencies concerning the coordination of use of frequency band 880-890 MHz for radiocommunications systems in the border area was signed.
On the basis of the agreement the Ukrainian party committed itself to significantly reduce the level of interferences emitted by the base stations of the CDMS system used in Ukraine. So far, the interferences caused by the proximity of the Ukrainian CDMA network have been constraining the ability of Polish operators Aero2 Sp. z o.o. and P4 Sp. z o.o. to provide telecommunications services with the use of GSM and UMTS 900 systems on the territory of Lubuskie and Podkarpackie voivodeships. Interference in the Polish networks by the Ukrainian party is caused by the use of, atypical under the European conditions, CDMA 800 system, in which the range of downlink transmission is the same as uplink transmission of the GSM and UMTS systems. Polish base stations interference by the Ukrainian ones has been the subject of a dispute between the two administrations since 2012.
Thanks to the reached compromise Polish operators will be able to extend their network coverage and improve the quality of service in the above mentioned voivodeships.
The agreement is a result of over two-year negotiations and works, within which i.a. laboratory and field studies were carried out on the influence of CDMA base stations signal on the GSM and UMTS base stations receivers. Along with UKE and the Ukrainian State Centre of Radio Frequencies experts, also experts of the National Institute of Telecommunications, Aero2 Sp. z o.o., P4 Sp. z o.o. and representatives of the Ukrainian National Commission for the State Regulation of Communications and Informatization were engaged in the activities aimed at a resolution of the dispute.