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New contention resolution schemes for WiMAX

Research output: Contribution in Book/Report/ProceedingsPaper


  • Jesús Delicado
  • Q. Ni
  • Francisco M. Delicado
  • Luis Orozco-Barbosa
Publication date2009
Host publicationWireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Number of pages6
ISBN (Electronic)978-1-4244-2948-6
ISBN (Print)978-1-4244-2947-9
<mark>Original language</mark>English


The use of Broadband Wireless Access (BWA) technology is increasing due to the use of Internet and multimedia applications with strict requirements of end-to-end delay and jitter, through wireless devices. The IEEE 802.16 standard, which defines the physical (PHY) and the medium access control (MAC) layers, is one of the BWA standards. Its MAC layer is centralized basis, where the Base Station (BS) is responsible for assigning the needed bandwidth for each Subscriber Station (SS), which requests bandwidth competing between all of them. The standard defines a contention resolution process to resolve the potential occurrence of collisions during the requesting process. In this paper, we propose to modify the contention resolution process to improve the network performance, including end-to-end delay and throughput.