Multiplex communications – Fault recovery – Bypass an inoperative channel
Reexamination Certificate
2005-10-31
2009-06-16
Cho, Hong (Department: 2419)
Multiplex communications
Fault recovery
Bypass an inoperative channel
C370S242000, C370S352000, C370S389000
Reexamination Certificate
active
07548510
ABSTRACT:
Provided is a method of constituting a highly reliable control network in an IP-based network environment and, more particularly, a protocol technology for automatic control channel constitution and protection. The method includes functions of protection group (PG)-1/3 control channel identification, detour control channel identification, an automatic switchover, a forced switchover, a control channel unavailability notice, a protection/switchover properties information inquiry, an Hello, a protocol error notice, and re-transmission. This invention provides a protection mechanism of control channels without additional overhead and with higher level of resilience capability to improve shortcomings of the LMP and MPLS based schemes.
REFERENCES:
patent: 6594228 (2003-07-01), Naidoo et al.
patent: 7161900 (2007-01-01), Tanada
patent: 2002/0131424 (2002-09-01), Suemura
patent: 2003/0189920 (2003-10-01), Erami et al.
patent: 2004/0062248 (2004-04-01), Nagarajan et al.
patent: 2004/0109687 (2004-06-01), Park et al.
patent: 2004/0153700 (2004-08-01), Nixon et al.
patent: 1020040048674 (2004-06-01), None
Lang, Jonathan, et al; “Link Management Protocol (LMP)”; Mar. 2002; IETF; draft-ietf-ccamp-Imp-03.txt; pp. 1-69.
Lang, Jonathan, et al, “Gereralized Multi-Protocol Label Switching (GMPLS) Recovery Functional Specification”; Apr. 2004; IETF; draft-ietf-ccamp-gmpls-recovery-functional-02.txt; pp. 1-22.
Griffith, David, et al; “An Analysis of Path Recovery Schemes in GMPLS Optical Networks with Various Levels of Pre-Provisioning”; 2003; NIST; pp. 1-12.
Li, Guangzhi, et al; “Control Plane Design for Reliable Optical Networks”; Feb. 2002; IEEE Communications Magazine; pp. 1-7.
Rozycki, Pawel, et al; “Failure Detection and Notification in GMPLS Control Plane”; Jun. 2007; IEEE, pp. 1-6.
Bell Labs Technical Journal 6(2), 153-169 (2002).
Kim Young Hwa
Yae Byung Ho
Blakely , Sokoloff, Taylor & Zafman LLP
Cho Hong
Electronics and Telecommunications Research Institute
Scheibel Robert C
LandOfFree
Method of constituting and protecting control channel in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of constituting and protecting control channel in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of constituting and protecting control channel in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4091156