?? 4? 2?? ????(?? ???, ???): 2? ?? ???????????? ??? ????? ???? ??? ? ??? ?2? ????????????? ???? ??? ?? ?? 5G??? ?? ????? ?? ??? ???? ????.
??? ? ??? ?2? ??????????? ?? 5? 6??? 8??? ??? ????? ????? ??????????, ?????????, ??????, ????????? ???? ????.
???? ??? ? ??? ???? ???? ???? ?????? ???? ??? ?? ??? ?????? ????? ????, ????, ??????? ? ??? ???? ???? ???? ?? ???? ??????? ???? ?? ????? ??????, ?????, ????, ????, ????? ? ??? ??? ????? ??? ???? ??. ?? ???? ?? '?????'? ??? '?? ??, ??? ???? ??' ????? ??? ???? ???.