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公开(公告)号：JP2001007859A
公开(公告)日：2001-01-12
申请号：JP2000151713
申请日：2000-05-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BUCHANAN WILLIAM M , CAO YANG , LEFOLEY STEPHEN G
IPC: H04J3/14 , H04L12/437 , H04L12/56 , H04L29/14 , H04Q11/04
Abstract: PROBLEM TO BE SOLVED: To surely and easily recover transfer of a signal by setting a plurality of paths explicitly instructed between a source and a receiver side router and allowing the receiver side router to select one of the paths instructed explicitly as a primary path, to make communication along the selected path and to immediately select a secondary path as a new primary path on the occurrence of a fault in the primary path. SOLUTION: A node S makes communication to a node E by using a plurality of explicit label switching path indication paths in existence between the nodes S and E. Using a label distribution protocol can assist setting of a label switching path LSP on the basis of a restriction condition of the explicit path instruction. The restriction condition of an explicit path instruction provides an inter-termination setup device with a method that uses a label distribution protocol of the LSP with an instructed path on the basis of a restriction condition started by an input LSR top reserve a resource. A plurality of the explicit path instruction label switching path is set between the router LSRS and an LSRE.
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公开(公告)号：JP2001308888A
公开(公告)日：2001-11-02
申请号：JP2001074805
申请日：2001-03-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BUCHANAN WILLIAM M , CAO YANG , SUREK STEVEN A
Abstract: PROBLEM TO BE SOLVED: To provide an optical communication system, that can automatically find out port-to-port connectivity information, that is, port binding information without the need for converting from optical signaling into electrical signaling. SOLUTION: One of a group of optical network elements making communication via an out of band channel, such as a LAN is selected as a network element leader. After the selection, the leader network element adjusts a port discovery process, requests port recognition, replies to a request, and other message is transmitted via the network element leader on the out of band channel from one non-leader network element to others. When the leader network element sets up a recognition process, a recognition request network element transmits an optical test signal to all the other networks along a link in question.
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公开(公告)号：JP2001160840A
公开(公告)日：2001-06-12
申请号：JP2000302084
申请日：2000-10-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
IPC: H04J3/00 , H04L12/64 , H04L12/66 , H04L12/70 , H04L12/801 , H04L12/851 , H04L12/857 , H04L29/06 , H04Q11/04
Abstract: PROBLEM TO BE SOLVED: To provide a communication system that fills a gap between a SONET /SDH transport and an IP transport so as to minimize the operation cost and also facilitate traffic engineering. SOLUTION: The communication system includes a convergence protocol that provides direct inter-layer communication between nodes in a network and a transport layer of one network node directly communicates with a service layer of the other network node. The service layer is an Internet protocol(IP) layer and the transport layer is a SONET transport layer. Each of the nodes running the convergence protocol includes an ADM or a digital cross connect.
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4.发明专利
公开(公告)号：JP2001292177A
公开(公告)日：2001-10-19
申请号：JP2001070264
申请日：2001-03-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
Abstract: PROBLEM TO BE SOLVED: To provide a device and method for automatically deciding port identification in a heterogeneous electrical communication system. SOLUTION: This heterogeneous electrical communication system uses 'out- of-band' signaling for automatically finding the identification of two ports for connecting two network elements through a specific link. One of the connected network elements consists of circuit exchange network elements and the other consists of packet exchange network elements. The one network element starts a port finding process and sends an overhand signal, such as a SONET/SDH protection switching message to a network element connected to the other end of a link. When the other network element monitors the states of its own ports and detects the change of a state as the result of transmission from the first network element at one place of these ports, the receiving side of this, that is a passive network element, identifies the port to be a port forming part of a concerned link. Each group of the packet exchange network elements and the circuit exchange network elements selects a network element leader for adjusting a request port identification.
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公开(公告)号：JP2002281105A
公开(公告)日：2002-09-27
申请号：JP2001069582
申请日：2001-03-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
Abstract: PROBLEM TO BE SOLVED: To provide an apparatus and a method for identifying and discovering automatic ports used in different systems. SOLUTION: Net elements used in a different electric of communication system use an 'out-band' signaling for automatically discovering an identification of two ports for connecting the two network elements via a certain specific link. Either of the connected elements has a circuit-switched network element, and the other has a packet-switched network element. The method for identifying and discovering the automatic port used in the different system comprises the steps of starting a port discovering process by the one element, and sending a SONET/SDH overhead signal to the element connected to another end of the link; the steps of monitoring the states of a plurality of ports of itself by another element, and identifying that the port forms a part of the link of interest of the port on the reception side, i.e., the passive network element when a change in the state as a result of a transmission from the first element is detected at one of these ports.
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Patent Agency Ranking
公开(公告)号：CA2338974C
公开(公告)日：2007-07-10
申请号：CA2338974
申请日：2001-02-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
Abstract: A network element for use in a heterogeneous telecommunications system employs "out of band" signalling to automatically discover the identity of t he two ports connecting two network elements through a specific link. Either of the connected network elements may be a circuit switching network element or a packet switching network element. One network element initiates the port discovery process and transmits a SONET/SDH overhead signal to the network element attached at the other end of the link. The other network element monitors the status of its ports and, when it detects a change in state at one of the ports, resulting from the first network element's transmissions, the receiving, or passive, network element recognizes the port as the port which forms a part of the li nk of interest.
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公开(公告)号：DE60123319D1
公开(公告)日：2006-11-09
申请号：DE60123319
申请日：2001-03-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
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8.发明专利
公开(公告)号：CA2336734C
公开(公告)日：2005-05-24
申请号：CA2336734
申请日：2001-02-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
Abstract: A heterogeneous telecommunications system employs "out of band" signalling to automatically discover the identity of the two ports connectin g two network elements through a specific link. Either of the connected network elements may be a circuit switching network element or a packet switching network element. One network element initiates the port discovery process and transmits an overhead signal, such as a SONET/SDH protection switching message, to the network element attached at the other end of the link. The other network element monitors the status of its ports and, when i t detects a change in state at one of the ports, resulting from the first network element's transmissions, the receiving, or passive, network element recognizes the port as the port which forms a part of the link of interest. Each group of network elements, packet switching and circuit switching, elects a network element leader which coordinates requests for port identification.
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公开(公告)号：CA2321513A1
公开(公告)日：2001-04-01
申请号：CA2321513
申请日：2000-09-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： CAO YANG
Abstract: A telecommunications system includes a convergence protocol that provides direct inter-layer communications between nodes within the network. The transport layer of one network node may communicate directly with the servic e layer of another network node. The service layer may be configured as an internet protocol (IP) layer, which may employ asynchronous transfer mode switching, and the transport layer may be a SONET transport layer. Each of the nodes that runs the convergence protocol may be a telecommunications element such as an add-drop-multiplexer (ADM) or a digital cross connect. SONET bandwidth provisioning may be accomplished through the inter-element, inter-layer communications of the convergence protocol.
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