1993 Fiscal Year Final Research Report Summary
Optimum Architecture of ATM Switch with Large Capacity in the Broadband ISDN
| Project/Area Number |
04650290
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
電子通信系統工学
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
OIE Yuji Kyushu Institute of Technology, Assistant professor, 情報工学部, 助教授 (50167293)
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| Project Period (FY) |
1992 – 1993
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| Keywords | ATM Switch / Broadband ISDN / Lightwave Network |
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| Research Abstract |
In this study, we have focused on lightwave networks which are expected to accommodate a large amount of traffic, and analyzed their performance. The results obtained through the research are summarized as follows.
(1) Improvement of lightwave newtork RookNet
RookNet we proposed last year has achieved a maximum throughput of about 0.4. In the study, we have improved its maximum throughput to about 0.8 by using some different protocol like Selective-repeat Protocol instead of a Stop-and-wait like protocol.
(2) On a scalability of RookNet
In RookNet treated so far, each node needs a number of 2(N - 1) receivers (or filters) in order to construct a network of N x N nodes. We have proposed RookNet with TDMA scheme in which a network of N X N can be extended to that of 2(N = 1) X 2(N -1) while the number of receivers per node being fixed at 2(N - 1). We have shown that the total maximum throughput over a network increases as the number of nodes increases, whereas the maximum throughput per node decreases.
(3) On the optimum network configuration
Configuration of lightwave networks can be logically canged by retuning the receivers and transmitters. Given the amount of traffic transmitted between a pair of nodes, we are developing the algorithm to obtain the optimum configuration that achieves the highest maximum throughput.
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