Network node and a method therein, and a radio base station and a method therein for protecting control channels of a neighbouring radio base station

摘要

A network node and a method performed by a network node for protecting control channels of a neighboring RBS, the network node and the RBS being operable in an OFDM based radio communication network are provided. An RBS and a method performed by an RBS for transmitting control channels to UEs currently being associated with the RBS in an OFDM based radio communication network are also provided. The method in the network node comprises determining (220) at least one subframe out of a predetermined number of subframes in which control channels are to be transmitted with reduced transmission power in relation to a nominal transmission power; and informing (230) the RBS which subframe(s) out of the predetermined number of subframes in which control channels are to be transmitted with reduced transmission power.

主权项

1. A method performed by a network node for protecting control channels of a neighbouring Radio Base Station, RBS, the network node and the RBS being operable in an Orthogonal Frequency Division Multiplexing, OFDM, based radio communication network, the method comprising:
selecting at least one subframe out of a predetermined number of subframes, in which the network node will transmit control channels with reduced transmission power in relation to a nominal transmission power; and indicating the selected subframes to the neighbouring RBS wherein the network node performs the selecting step independently from determining in which subframe(s) data channels are to be transmitted by the network node with reduced transmission power; and wherein the method further comprises performing said selecting and indicating steps as a response to receiving indications from User Equipments, UEs, currently being associated with the network node, said indications indicating at least one UE requiring the control channels to be transmitted by the network node with the nominal transmission power and indicating at least one UE not requiring the control channels to be transmitted by the network node with the nominal transmission power.