2013 Fiscal Year Annual Research Report
| Project/Area Number |
23246072
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| Research Institution | Nagoya University |
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Principal Investigator |
佐藤 健一 名古屋大学, 工学(系)研究科(研究院), 教授 (00377805)
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| Co-Investigator(Kenkyū-buntansha) |
長谷川 浩 名古屋大学, 工学(系)研究科(研究院), 准教授 (40323802)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | フォトニックネットワーク / 光伝達ノード / 光クロスコネクト / ROADM / 光集積回路 |
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| Research Abstract |
Most of the present OXCs are based on WSSs. The traffic increase forces the use of high port count WSSs to create large scale OXCs, however, it will be very difficult to substantially increase the WSS port count, for example ten times. To resolve this issue, we have developed various technologies. If we consider large-scale cost-effective OXCs that support increased numbers of fibers between adjacent nodes, perfect routing capabilities at node may not be necessary. In other words, we may introduce some constraint in terms of routing, which can substantial simplify system development, with marginal offset. We have clarified the role of inter- and intra-node blocking in the creation of bandwidth abundant networks utilizing such OXCs. When we expand networking capacity, the wise use of intra-node blocking can be an effective solution. How to introduce intra-node blocking is tightly coupled with the adopted node architecture and optical devices utilized. We conducted thorough investigations to identify the best arrangement that matches the envisaged requirements. The different OXC architectures that exploit intra-node blocking includes are investigated. It is shown that by properly introducing a slight limitation on routing performance and by applying the contention-aware RWA algorithm, the required hardware scale can be significantly reduced while the performance offset can be marginal. As a result we succeeded in developing very large scale and cost effective OXCs.
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| Current Status of Research Progress |
Reason
25年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
25年度が最終年度であるため、記入しない。
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