METHOD FOR OPERATING A BASE STATION IN A HETEROGENEOUS RADIO ACCESS NETWORK AND BASE STATION THEREOF AND METHOD FOR OPERATING A MOBILE STATION IN A HETEROGENEOUS RADIO ACCESS NETWORK AND MOBILE STATION THEREOF

摘要

The embodiments of the invention relate to a method for operating a base station (BS1) in a heterogeneous radio access network (H-RAN). The heterogeneous radio access network (H-RAN) contains a network node group (NG) of a macro base station (BS1), at least one first mobile station (MS1) connected to the macro base station (BS1), a micro base station (BS2) located within a coverage area (CA-BS1) of the macro base station (BS1) and at least one second mobile station (MS2) connected to the micro base station (BS1). The method contains transmitting from the base station (BS1) of the network node group (NNG) to a mobile station (MS, MS1) of the network node group (NNG) first downlink radio frequency signals (D-RFS1) of a first frequency range (FR1), when a further mobile station (MS, MS2) of the network node group (NNG) provides a transmission of first uplink radio frequency signal (U-RFS1) of the first frequency range (FR1) to a further base station (BS, BS2) of the network node group (NNG), and receiving at the base station (BS1) from the mobile station (MS1) second uplink radio frequency signal of a second frequency range(FR2), when the further base station (BS2) provides to the further mobile station (MS2) a transmission of second downlink radio frequency signal of the second frequency range (FR2). The method further contains determining at the base station (BS1) at least one transmission parameter for a further transmission of the first downlink radio frequency signals (D-RFS1) based on an interference of the second downlink radio frequency signals for adapting the further transmission of the first downlink radio frequency signals (D-RFS1) and for reducing interference of the first downlink radio frequency signals (D-RFS1) at a location of the further base station (BS2).The embodiments of the invention further relate to a method for operating a mobile station (MS1) in the heterogeneous radio access network (H-RAN), to a base station (BS1) for operating in the heterogeneous radio access network (H-RAN) and to a mobile station (MS1) for operating in the heterogeneous radio access network (H-RAN).