• Title/Summary/Keyword: MMDCF

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Frame Management Method to Support QoS of MAC Protocol Based TDMA in Mesh Network Environment (메쉬네트워크 환경에서 TDMA기반 MAC 프로토콜의 QoS를 지원하기 위한 프레임 관리기법)

  • Jang, In-Yong;Lee, Sun-Young
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.9 no.6
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    • pp.75-87
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    • 2009
  • It is difficult to support QoS service in existing MAC Protocols in Wireless Mesh Network environments. while DCF can not support QoS, EDCA is operated with prioritized channel access method but can not give full performance. This thesis proposes frame management method to support QoS in Multi-Media DCF(MMDCF) MAC Protocol working in wireless mesh network. MMDCF uses ACH phase in TDMA frame to perform selection and elimination. Prioritized phases's count m and Fair Elimination phases's count n determine contention level and make string probability to only one win the contention. Forced TDMA Frame release method can support QoS requirements. MMDCF results good performance and good channel efficiency to support QoS requirements better than EDCA in multimedia stream environments.

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