Subchannel Multiplexing Scheme for Mobile Broadband Wireless Access Services in AMC-based OFDMA System(<Special Section>Mobile Multimedia Communications)

• KIM Dong Hoi

  Faculty of Mobile Telecommunication Research Division, Electronics and Telecommunications Research Institute

• KANG Chung Gu

  Faculty of College of Information & Communications, Korea University

抄録

In the adaptive modulation and coding (AMC)-based orthogonal frequency division multiple access (OFDMA) system for broadband wireless service, a large number of users with short packets cause a serious capacity mismatch problem, which incurs resource under-utilization when the data rate of subchannel increases with a better channel condition. To handle the capacity mismatch problem, we propose an AMC-based subchannel multiplexing (ASM) scheme, which allows for sharing the same subchannel among the different simultaneous flows of the same user. Along with the ASM scheme, we also consider multi-class scheduling scheme, which employs the different packet scheduling algorithm for the different service class, e.g., packet loss rate-based (PLR) scheduling algorithm for real-time (RT) service and modified minimum bit rate-based (MMBR) scheduling algorithm for non-real-time (NRT) service. In the typical integrated service scenario with voice, video, and data traffic, we have shown that the proposed schemes significantly improve the overall system capacity.

収録刊行物

• IEICE transactions on communications

  IEICE transactions on communications 88 (7), 2810-2818, 2005-07-01

  一般社団法人電子情報通信学会

キーワード

• AMC-based subchannel multiplexing
• packet scheduling
• OFDMA system
• multi-class service
• AMC

詳細情報

• CRID: 1572543025135947008
• NII論文ID: 10016779440
• NII書誌ID: AA10826261
• ISSN: 09168516
• 本文言語コード: en
• データソース種別:
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