Passive optical networks structure and a remote node in a backhaul communication network

A remote node of a Passive Optical Networks (PONs) structure having a plurality of PONs and constituting at least a part of a backhaul network for supporting a Radio Access Network, in which a number of radio base stations (RBSs) are connected to optical networks units (ONUs), wherein the ONUs are grouped between separate PONs of said PONs structure, wherein ONUs of a respective separate PON of the plurality of PONs are interconnected passively through the remote node to an optical line terminal (OLT) of the respective separate PON, and wherein the remote node comprising:

• a power splitter having a first set of ports on an uplink side and a second set of ports on a downlink side, wherein the second set of ports are connected to ONUs and at least one port of the first set of ports is connected to the OLT of the respective separate PON;
• and
• an isolator connected to at least two ports of the first set of ports to redirect uplink data traffic from one of the ONUs for output onto one or more ports of the second set of ports to other ONUs connected to the second set of ports,
• wherein the power splitter provides switching to implement a S1 interface between the OLT and ONUs of the respective separate PON and a X2 interface for inter base station traffic between the ONUs.