Delay aware synchronous bidirectional transmission scheme for energy-efficient TDM-PON = 에너지 효율적 TDM-PON을 위한 지연 인지 양방향 동기 전송방식

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Due to the rapid spread of the Internet, energy saving becomes important issues of ICT area. Particularly, a significant part, around 70%, of overall internet energy consumption is consumed by access networks. However, some studies show that TDM-PON (Time Division Multiplexing - Passive Optical Network) are low utilized in most of the day, which is major part of access networks. Most energy saving solutions in TDM-PON consider downlink traffic only. In that case when uplink traffic comes to ONU, ONU`s sleep is interrupted. It imposes extra energy consumption due to frequent sleep mode transition. Also, as downlink and uplink are managed independently, there would be additional control message overhead than the cases where both uplink and downlink are managed together. To solve this problem, some researches propose synchronized uplink and downlink transmission. But these solutions do not take into account traffic delay requirement. In this study, it has been found that there are still room to save energy in those solutions. In this paper, Delay Aware Synchronous Bidirectional Transmission (DASBT) Scheme for Energy-Efficient TDM-PON is proposed. In detail, novel sleep interval decision algorithm is proposed that considers the uplink and downlink traffic conditions, and delay requirements. In addition, the uplink and downlink traffic is transmitted at the same time to reduce energy consumption. Simulation results show that proposed scheme minimizes energy consumption up to 15% in comparison with previous schemes.
Advisors
Choi, Jun Kyunresearcher최준균researcher
Description
한국과학기술원 :전기및전자공학과,
Publisher
한국과학기술원
Issue Date
2013
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학과, 2013.8 ,[vi, 34 p. :]

Keywords

Energy saving; Sleep mode; Bidirectional transmission; Synchronous transmission; TDM-PON; PON; 에너지 절감; 슬립 모드; 양방향 전송; 동기 전송; 시분할 수동 광가입자망; 광가입자망

URI
http://hdl.handle.net/10203/221834
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=657351&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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