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Patent Searching and Data


Title:
NETWORK PATH COMPUTATION METHOD, DEVICE AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/004747
Kind Code:
A1
Abstract:
The invention relates to the field of communications. Disclosed in an embodiment of the invention are a network path computation method, device and system capable of increasing utilization of a network resource. The method comprises: upon failure of an internet protocol layer path computation element (IP PCE) to compute a path in an IP layer network, triggering an optical layer PCE to compute a path in an optical layer network; upon failure of the optical layer PCE to compute the path in the optical layer network, returning, by the optical layer PCE, optical layer network conflict resource group information to the IP PCE; and re-computing, by the IP PCE, and according to the optical layer network conflict resource group information, a path from a source node to a destination node. The invention is applicable to a network path computation.

Inventors:
SHI LEI (CN)
ZHENG HAOMIAN (CN)
DONG JIXIONG (CN)
WANG YUFEI (CN)
ZENG FENG (CN)
Application Number:
PCT/CN2015/083290
Publication Date:
January 12, 2017
Filing Date:
July 03, 2015
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L12/70
Foreign References:
CN101502063A2009-08-05
CN101001200A2007-07-18
CN101610432A2009-12-23
CN102469009A2012-05-23
Other References:
OKI, E. ET AL.: "Framework for PCE-Based Inter-Layer MPLS and GMPLS Traffic Engineering", NETWORK WORKING GROUP, 30 September 2009 (2009-09-30), pages 10 - 12, XP055108266
DHODY, D. ET AL.: "Packet Optical Integration (POI) Use Cases for Abstraction and Control of Transport Networks (ACTN)", 16 April 2015 (2015-04-16), pages 8, XP015105850
See also references of EP 3249858A4
Attorney, Agent or Firm:
BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)
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