@techreport{TR-IC-11-26,
   number = {IC-11-26},
   author  =  {Flavio  Adalberto  Kubota and Juliana Freitag Borin and
                   Nelson Luis Saldanha da Fonseca},
   title   =  {{Cross-layer  Uplink  Scheduler  for  the  IEEE  802.16 
                   standard}},
   month = {December},
   year = {2011},
   institution = {Institute of Computing, University of Campinas},
   note = {In English, 13 pages.
    \par\selectlanguage{english}\textbf{Abstract}
       The IEEE 802.16 standard for broadband wireless access is a low
       cost  solution  for  Internet  access in metropolitan and rural
       areas.  Although  it  defines  five  service  levels to support
       real-time  and  bandwidth  demanding  applications,  scheduling 
       mechanisms  are  not  specified  in  the  standard.  Due to the
       wireless  channel  variability,  scheduling  mechanisms  widely 
       studied  for  wired  networks  are not suitable for IEEE 802.16
       networks.  This  paper proposes an uplink cross-layer scheduler
       which makes bandwidth allocation decisions based on information
       about  the  channel  quality  and  on  the  Quality  of Service
       requirements  of  each connection. Simulation results show that
       the  proposed  scheduler  improves the network performance when
       compared  with a scheduler which does not take into account the
       channel quality.
  }
}