Combining uplink radio signals

A remote radio head controller for controlling uplink contribution from a plurality of remote radio heads in a combiner, wherein each remote radio head is capable of receiving a plurality of carriers on respectively different frequencies, the remote radio head controller comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the remote radio head controller to:
• determine a first set of at least one remote radio head, selected from the plurality of radio heads which should be used for uplink data reception from a first wireless device;
• determine a second set of at least one remote radio head, selected from the plurality of radio heads which should be used for uplink data reception from a second wireless device, wherein the first set and the second set are disjoint;
• select a first uplink carrier for the first wireless device and configure the first wireless device to use the first uplink carrier;
• select a second uplink carrier for the second wireless device and configure the second wireless device to use the second uplink carrier;
• and
• apply a configuration such that at least one remote radio head of the first set refrains from contributing on a first channel with uplink signals on the second uplink carrier and that at least one remote radio head of the second set refrains from contributing on the first channel with uplink signals on the first uplink carrier.

A computer program for controlling uplink contribution from a plurality of remote radio heads in a combiner, wherein each remote radio head is capable of receiving a plurality of carriers on respectively different frequencies, the computer program comprising computer program code which, when run on a remote radio head controller causes the remote radio head controller to:

• determine a first set of at least one remote radio head, selected from the plurality of radio heads which should be used for uplink data reception from a first wireless device;
• determine a second set of at least one remote radio head, selected from the plurality of radio heads which should be used for uplink data reception from a second wireless device, wherein the first set and the second set are disjoint;
• select a first uplink carrier for the first wireless device and configure the first wireless device to use the first uplink carrier;
• select a second uplink carrier for the second wireless device and configure the second wireless device to use the second uplink carrier;
• and
• apply a configuration such that the at least one remote radio head of the first set refrains from contributing on a first channel with uplink signals on the second uplink carrier and that the at least one remote radio head of the second set refrains from contributing on the first channel with uplink signals on the first uplink carrier.