DLC-VIT4IP: Distribution Line Carrier - Verification, Integration and Test of PLC Technologies and IP Communication for Utilities

As can be seen on the page DLC Infrastructure,  the following physical DLC network components are required to enable DLC communication in a LV, MV or MV/LV network. 

DLC Node
DLC modem, which is connected to the power lines. All the equipment, which is connected to the DLC modem (e.g. Multi Utility Controller (MUC) and meters), is also encapsulated in the DLC Node.

DLC Bridge
DLC Node or Nodes, which connect two logical networks that are not connected
(e.g. LV and MV). Networks can either not be physically connected or the interruption is on the communication level, e.g. transformers block the communication signal.

 

DLC Access Point
Sometimes is also called Base Station in other technologies: DLC Node, which is connected on the one side to the Wide Area Network (WAN) or utility intranet and on the other side to the DLC network. The communication with the utility servers is done through this DLC Node. The usual placement of the DLC Access Point is at the transformer.

 

DLC Repeater 
Due to the bad channel conditions it is very probable that not all the
nodes in one DLC network can reach the DLC Bridge or DLC Access Point. That’s why the nodes between the DLC Nodes, which cannot reach the Bridge or Access Point have to retransmit the signal in order to achieve the 100% coverage.
It is important to mention, that every DLC Node must have this repeater functionality. Usually no dedicated repeater nodes need to be
installed.

 

In the example shown in the figures, DLC Node 4 operates also as repeater for Nodes 5 and 6. Due to the dynamic changes of the channel conditions DLC Node 3 may become the repeater for Nodes 4, 5 and 6. That’s why every DLC node must have the repeater functionality which can be done either under the IP layer (this is preferable due to lower overhead and faster transmission) or on the IP layer (huge overhead and slower transmission).