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ABSTRACT

The IEEE 802.16 technology defines several link level mechanisms to retransmit erroneous data. In this paper we compare the performance of the ARQ and HARQ mechanisms in the IEEE 802.16 networks. Our simulations results show that in general HARQ provides a better performance. However, ARQ can compete successfully with it due to a smaller signaling overhead. Furthermore, since ARQ does not require a dedicated uplink signaling channel for the acknowledgments messages, it results in better resources utilization in the uplink direction.

REFERENCES

• 1: Air interface for fixed broadband wireless access systems. IEEE Standard 802.16, Jun 2004.
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• 3: WiMAX Forum Mobile System Profile, Release 1.0 Approved Specification, Nov 2007. Revision 1.5.0.
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INDEX TERMS

Primary Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Wireless communication

General Terms:
Performance

Keywords:
ARQ, HARQ, IEEE 802.16 WiMAX, NS-2