the embodiments of the present disclosure are also applicable to many networking modes of other types of repeaters such as frequency selective repeaters frequency shifting repeaters and indoor repeaters referring to fig4 a direct mode repeater 30 uses a donor antenna to receive a downlink signal sent from a main bs 10 and uses a retransmission antenna to transmit the signal to cover a first repeater coverage area 31 an uplink signal from the first repeater coverage area 31 is received by the retransmission antenna of the direct mode repeater 30 then transmitted by the donor antenna and finally received by an antenna of the main bs 10 similarly an optical fiber repeater 20 uses optical fibers to carry out signal transmission between the repeater and the main bs 10 the optical fiber repeater 20 covers a second repeater coverage area 32 in fig4 the coverage area of the main bs 10 the first repeater coverage area 31 and the second repeater coverage area 32 have the same cell id which belong to the same cell after the networking is completed the neighborhood relations between the coverage area of the main bs 10 the first repeater coverage area 31 and the second repeater coverage area 32 and other surrounding cells are fixed the adjacent cells of the coverage area of the main bs 10 the first repeater coverage area 31 and the second repeater coverage area 32 are not completely the same when a ue is located in the coverage area of the main bs and coverage areas of different repeaters the ue may receive signals.