Harmonizing noise aggregation and noise management in distributed antenna system

A digital distributed antenna system (DAS) for coupling to output ports of a plurality of base transceiver stations (BTS's) comprising:

• a plurality of remote radio units (RRUs) in communication with mobile devices;
• a central digital hub for routing and processing digitized RF signals, wherein the central digital hub is coupled to the RRUs and to the BTS's;
• and
• at least one uplink digital filter bank comprising a plurality of uplink digital filters, each of the uplink digital filters being matched to a unique uplink cell resource, a uplink cell resource comprising a band of contiguous frequencies within a frequency spectrum owned by an operator including at least one or more signals being received from one or more mobile devices in an uplink direction
• wherein the at least one uplink digital filter bank is located in two or more RRUs of the plurality of RRUs, and
• wherein, in the uplink direction, a noise aggregation process is performed on two or more RRUs for a plurality of uplink cell resources of the two or more RRUs and not across a whole frequency band of the two or more RRUs.

A digital distributed antenna system (DAS) comprising:

• a central digital hub coupled to a plurality of base transceiver stations (BTS's) and a plurality of remote radio units (RRUs), the central digital hub comprising:
• at least one uplink digital filter bank comprising a plurality of uplink digital filters;
• each of the plurality of uplink digital filters being matched to a unique cell resource, a cell resource comprising a band of contiguous frequencies within a frequency spectrum owned by an operator, and each cell resource including at least one or more signals being received from one or more mobile devices in an uplink direction,
• wherein, in the uplink direction, a noise aggregation process is performed on two or more RRUs for a plurality of uplink cell resources of the two or more RRUs and not across a whole frequency band of the two or more RRUs.

A method for harmonizing noise aggregation for a digital DAS coupled to a plurality of base transceiver stations (BTS's) and a plurality of remote radio units (RRUs), the method comprising:

• receiving a plurality of individual uplink cell resource data samples from the plurality of RRUs;
• allocating an individual weighted pre-aggregation gain to one or more individual uplink cell resource data samples;
• aggregating the one or more of the individual uplink cell resource data samples into a combined uplink cell resource data sample;
• and
• transmitting the combined uplink cell resource data sample to an assigned BTS,
• wherein a cell resource comprises a band of contiguous frequencies within a frequency spectrum that an operator owns, and
• wherein, in an uplink direction, a noise aggregation process is performed on two or more RRUs for one or more uplink cell resource of the plurality of RRUs and not across a whole frequency band of the plurality of RRUs.