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Paper Abstract and Keywords
Presentation 2006-03-03 11:00
Analytical Evaluation of energy-saving effect for LAN switches
Yutaka Yahiro, Hitomi Tamura, Yutaka Fukuda, Kenji Kawahara, Yuji Oie (Kyushu Inst. of Tech.)
Abstract (in Japanese) (See Japanese page) 
(in English) As an energy-saving scheme for LAN switches, it is common policy that each interface of their switches is kept on while there are some packets for transmission in its buffer whereas its state changes into idle state, which is relatively low power mode, immediately after the buffer becomes empty. However, this policy can damage its hardware in terms of power supply device since the number of turning-on times becomes large although the energy-saving rate may be large. For relieving this issue, we can adopt the alternative policy that interfaces further turn on during some standby time even if their packet transfer has completed. However, the energy-saving effect of LAN switches with these policies may not been evaluated analytically and quantitatively well. Therefore, in this paper, we derive the power reduction rate and the average number of turning-on times as performance measures by modifying M/M/1 and IPP/M/1 queueing models, and investigate the impact of the standby time on the energy-saving effect through some numerical results.
Keyword (in Japanese) (See Japanese page) 
(in English) Energy-saving for LAN switches / standby time / IPP/M/1 with k-phase Erlang standby / / / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 628, IN2005-230, pp. 437-442, March 2006.
Paper # IN2005-230 
Date of Issue 2006-02-23 (IN) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee IN NS  
Conference Date 2006-03-02 - 2006-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Rizzan Sea-Park Hotel Tancha-Bay (Okinawa) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IN 
Conference Code 2006-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analytical Evaluation of energy-saving effect for LAN switches 
Sub Title (in English)  
Keyword(1) Energy-saving for LAN switches  
Keyword(2) standby time  
Keyword(3) IPP/M/1 with k-phase Erlang standby  
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1st Author's Name Yutaka Yahiro  
1st Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
2nd Author's Name Hitomi Tamura  
2nd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
3rd Author's Name Yutaka Fukuda  
3rd Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
4th Author's Name Kenji Kawahara  
4th Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
5th Author's Name Yuji Oie  
5th Author's Affiliation Kyushu Institute of Technology (Kyushu Inst. of Tech.)
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Speaker Author-1 
Date Time 2006-03-03 11:00:00 
Presentation Time 20 minutes 
Registration for IN 
Paper # IN2005-230 
Volume (vol) vol.105 
Number (no) no.628 
Page pp.437-442 
#Pages 6 
Date of Issue 2006-02-23 (IN) 

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