?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F100%2F&rft.title=A+scheduler+for+a+wireless+system&rft.creator=Allwright%2C+David&rft.creator=Armour%2C+Tristram&rft.subject=Information+and+communication+technology&rft.description=This+problem+deals+with+the+scheduling+of+data+packets+for+different+users+who+share+a+common+wireless+channel+of+limited+capacity+and+who+have+different+service+time+requirements.+From+a+system+point+of+view+it+is+important+to+maintain+a+high+throughput%2C+that+is%2C+a+high+number+of+packets+served+per+unit+of+time.+However+from+a+user+point+of+view+it+is+important+to+minimise+the+service+time.+This+poses+a+trade-off+problem%2C+which+is+one+of+the+goals+we+wish+to+analyse.%0A%0AThe+wireless+transmission+channel+alternates+between+good+and+bad+states+over+time.+While+the+channel+is+in+a+bad+state+the+transmission+of+a+packet+fails+and+the+packet+needs+to+be+retransmitted.+When+the+state+of+the+channel+is+good%2C+packets+are+transmitted+successfully+and+do+not+require+retransmission.+The+system+transmission+efficiency+or+throughput+might+be+defined+as+the+number+of+data+packets+that+can+be+transmitted+successfully+in+a+given+time.%0A%0AThe+scheduler+we+wish+to+study+is+designed+to+consider+both+the+wireless+channel+conditions+and+the+users'+quality+of+service+requirements.+For+this+purpose+users+are+assigned+a+credit+every+scheduling+frame%2C+which+is+a+function+of+the+wireless+channel+conditions+and+the+quality+of+service+required%2C+which+depends+on+the+traffic+class.&rft.date=2007-04-17&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F100%2F1%2FMotorola-WirelessScheduler.pdf&rft.identifier=++Allwright%2C+David+and+Armour%2C+Tristram++(2007)+A+scheduler+for+a+wireless+system.++%5BStudy+Group+Report%5D+++++