, and fewer macro cell sites with towers. The architecture includes larger macro cells that each control small cells as required by locations of dense traffic. See Figures 7-9 and 7-10 for examples of HetNets architecture. www.TechnicalPDF.com the edges result in less interference with signals in adjacent cells. ow-powerantema Remote node lo Macro (donor with controller power antennaf for enodeB)antenna better coverage at the with controller Common Public Radio Interface for Dynamic Control JCPRI over Fiber Figure 7-9 An example of HetNet architecture. www.TechnicalPDF.com 5G equipment cabinet cabinet can be shared by multiple operators cabinet station 5G equipment Light pole cabinet Base stations Macro station is connected to backhaul is connected fiber over Common Public Radio Interface |CPRI) to macro station Figure 7-10 HetNet architecture for 5G networks. (Stock photo by Chun-Tso Lin/123RF [center] and Thomas Northcut/Getty Images [left, right]) www.TechnicalPDF.com Equipment in HetNets-Small Low-Powered Base Stations HetNets are made up of small low-power cells. Low power results in decreased areas of coverage at each cell. Low power is important in HetNets because it is less likely to cause interference with frequencies in nearby cells. Low-power signals are not carried as far as those at higher powered cell sites. In HetNets, the macro evolved NodeB (eNodeB) provides the radio in a large cell while a low-powered macro eNodeB is in a small cell. The following are low-powered base stations used with existing macro evolved NodeBs. Macro cells cover larger areas and can be connected to towers, rather than the smaller antennas seen at low-powered small cells. Macro and small cells are connected to each other either by fiber-optical cabling or mobile frequencies. Remote Radio Heads (RRHs) are small antennas and base stations located on outdoor furniture such as thin light poles, telephone poles, and the side of buildings. Micro Evolved eNodeBs (eNBs) are smaller eNBs controlled by macro Home eNodeBs (HeNBs) are