RADWIN2000+SeriesUserManual Release4.2.40 9‐3
HSSImplementation
Figure9‐3:CollocatedunitsusingHubSiteSynchronization(2)
9.3HSSImplementation
HSSisimplementedusingamaster(whichtransmitssynchronizationpulses),wheretherest
oftheco‐locatedunitsaredefinedasclients.Theseclientradiounitssynchronize their
transmissiontothepulsesreceivedbythemaster.
HSScanbecarriedoutbetweenallco‐locatedRADWINradioproducts,solongastheyare
definedasabasestation.
9.3.1RadioFramePattern
Thesynchronizationsignalistransmittedonceperaspecifictimeperiod,anddetermines
whentheco‐locatedunits willtransmitandwhentheywillreceive.Thiscycleoftransmitand
receiveiscalledtheRadioFramePattern.Figure 9‐4showstheRadioFramePatternof3co‐
locatedoutdoorunits(ODUs).
Figure9‐4:RadioFr
amePattern
Ifthemasterisoneoftheco‐locatedODUs,itiscalledtheHubSiteMaster(HSM).Theother
co‐locatedODUsarecalledtheHubSiteClients(HSC).