Radwin 5000 HPMP - Traffic Generation Tools; Traffic Generation Examples and Method

RADWIN5000HPMPUserManual Release3.5.70 10‐5
TrafficGenerationTools
TrafficGenerationTools
Forourexamplesinthischapter,weusedtheIperftrafficgeneratorwithitsGUIfrontend,
Jperf.Thesearefreeopensourcesoftwarepackagesfoundhere:
Iperf:http://sourceforge.net/projects/iperf/
Jperf:http://sourceforge.net/projects/jperf/
JperfincludestheIperfex ecutable.
Theresultsbelowareindicativeratherthanaccurate.Accuratetrafficgenerationand
measurementrequirehardwaretools.Seeforexample,http://www.ixiacom.com/.
TrafficGenerationExamplesandmethod
EachcasedemonstratedbelowisbasedonasingleHBSwiththreefixedHSUs.Twoofthem
willbeidleandonewillbeheavilyloaded(“thebusyHSU”)todemonstratethefollowing
cases:
WewilllookatExample1ingreatdetail,toensurethatyouunderstandeachitemappearing
intheSBMUtilizationwindow.Subsequentexampleswillbeexplainedmorebriefly,
concentratingonutilizationissuesratherthangraphicfeatures.
Trafficgenera tionwasaccomplishedbyusingtwoparallelJperfsessions.Onesenttrafficat
100MbpsfromtheHBS totheHSU.Thesecondsenttrafficat50MbpsfromtheHSUtothe 
HBS.Bothunitsweredrivenatmaximumcapacity.
Table10‐1:Trafficgenerationexamples‐Timeslot(TS)Allocation
Example
DownlinkTS
allocation
UplinkTS
allocation
Purpose
1
AllHSUs2TS AllHSUs2TS
RequireddownlinkBWtak enfromunused
timeslots
2
BusyHSU2TS,
otherstakeall
remainingTS
AllHSUs2TS
RequireddownlinkBWtakenfrom
allocatedbutunusedtimeslots
3
AllHSUs2TS
Busy HSU1TS,
otherstakeall
remainingTS
BusyHSU“starved”inuplinkdirection
4
AllHSUs2TS
Busy HSU1TS,
otherstakehalf
remainingTS
BusyHSUtake sunallocateduplinktime
slots