Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2004-12-03
2008-05-13
Harper, Kevin C. (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C370S227000, C370S235000, C370S401000
Reexamination Certificate
active
07372870
ABSTRACT:
An Ethernet transmission apparatus having a quick protection and fair attribute as well as a corresponding method are disclosed. The apparatus comprises a sorter, MPLS processing module and a SDH processing module, wherein, the MPLS processing module includes a VC tag packaging unit, a multiplexing unit, a tag managing unit, a scheduler, an MPLS protective unit, an MPLS signaling unit and a Fair algorithm unit. The present invention sorts the Ethernet transactions and labels VC tags by the VC tag packaging unit so as to form a PW LSP. PW LSP with a plurality of identical source and target ends are multiplexed into a tunnel LSP. MPLS signaling unit counts the network nodes that LSP passes by and calculates a protective LSP. MPLS protective unit selects an active LSP or a protective LSP and enters the scheduler for queuing. The FAIR algorithm controls the allotment of the bandwidth so as to secure the fairness of the transactions.
REFERENCES:
patent: 6647428 (2003-11-01), Lindquist et al.
patent: 2004/0105459 (2004-06-01), Mannam
patent: 2004/0156313 (2004-08-01), Hofmeister et al.
patent: WO 2004/066120 (2004-08-01), None
Vivace Networks: “Delivering Ethernet Traffic in MAN/WAN,” White Paper, Online!Dec. 31, 2002, XP002314622.
Itu-T “Y.1720 Protection switching for MPLS networks.” Series Y, Global Information Infrastructure, Internet Protocol Aspects and Next Generation Networks, Online! Sep. 2003, XP002314623.
Cheng Ming
Huang Feng
ALCATEl
Harper Kevin C.
Sughrue & Mion, PLLC
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