General Radio Frequency Centre Building 15, 7 Derbenevskaya Embankment 117997 Moscow E-mail:
[email protected] Your 25.03.2016 № MC-738; 04.04.2016 nr MC-826 Our 20.05.16 nr 18-5/ 15-0084-011 Coordination of frequency allotments to terrestrial digital broadcasting Dear Madam/Sir, As you probably know, we have national goal to implement wireless broadband ( LTE ) in the 700 MHz band . This means that we have to clear the 700 MHz band from broadcasting and to find additional TV channels to compensate the 49-60 channels by the end of June 2017 . To achieve this we have two important issues we need to clear in the near future. In order of importance: To minimize the potential interference level by broadcasting in channels 50-53 to LTE systems LTE uplink is in the band 703-733 MHz and broadcasting in channels 50-53 will significantly reduce the quality of LTE network and/or make it impossible to use it in border areas. It is clear that countries may use different services for a long time . In that light we seek to find compromises that would make it possible for both sides to continue with their own national plans and services . At this stage, planned use or implementation of allotments of Russian Federation KINGISEPP ch . 50, GDOV , ch . 50, VYBORG ch. 52, PSKOV ch.52, PSKOV ch. 53 , GDOV ch. 53 and PUSHKINSKIE GORY ch. 53 is the biggest concern for Estonia. There are topics we need to discuss to ease the change of 50 to 53 or lower the interference coming from above mentioned allotments to Estonia. Among other to implement different mitigation techniques (for example reduction of the transmission power of the broadcasts, down tilt, directional antennas, use lower altitude antennas , etc.) or we can agree to withdraw from some KOERU and KOHTLA allotment channels in favour of Russian Federation for an agreed time period instead . Furthermore, the same mitigation techniques plus restriction zones or PFD limits on border for base stations can be applied to our LTE downlink (channels 57-60) to protect your broadcasting stations . Use of analogue TV (ATV) stations In Your 04.04.16 letter talking about ATV usage You referred to previous 15.05.15 letter and confirmed that there is no change of the usage plan. Based on the information obtained during the meeting (Tallinn, 15-19.06.2015) and having evaluated technical parameters of ATV stations of Russian Federation, we can list ATV stations that are most problematic in terms of coexistence with LTE: KINGISEPP LEN ch. 50 ; VYBORG LEN ch. 50 and ch. 52; SANKT PETERBURG ch. 51; TRUTNEVO PSK ch. 51; GLUBOKOE PSK ch. 51 and SLANTSY LEN ch. 53. We are on a position as it was indicated in our letter 13.03.15 no 18-1/15-0239-002 that after 17 June 2015 interference to existing and new digital allotments/assignments and also to wireless broadband ( LTE) from analogue stations should not be allowed. We propose to continue discussion on the usage of channels 50-53 (reducing technical parameters, moving transmitters geographically or changing channels etc.) to minimize the cross border interference between LTE and DTV stations. Yours sincerely, Alo Einla Head of Frequency Management Department Vladimir Jakovlev + 372 667 2123
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