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公开(公告)号：EP2502371A1
公开(公告)日：2012-09-26
申请号：EP09774988.1
申请日：2009-11-18
CPC分类号： H04Q11/0067 , H04L7/041 , H04Q2011/0064 , H04Q2011/0083
摘要： The present invention relates to a solution for handling large dynamical signals in a passive optical network system and in particular for determining scheduling of bursts from a plurality of optical network units This solution is provided as a method, devices, system and a computer program for determining a bit error ratio, i e BER in received communication data, determining, using the BER, optimized transmission scheduling of communication bursts from the optical network units, and providing a signal to the optical network units indicating the transmission scheduling of transmission bursts in accordance with the determined optimized transmission scheduling
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公开(公告)号：EP2502371B1
公开(公告)日：2014-01-08
申请号：EP09774988.1
申请日：2009-11-18
CPC分类号： H04Q11/0067 , H04L7/041 , H04Q2011/0064 , H04Q2011/0083
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公开(公告)号：EP2939357A2
公开(公告)日：2015-11-04
申请号：EP13818844.6
申请日：2013-11-28
发明人： SKUBIC, Björn , DAHLFORT, Stefan , LARAQUI, Kim , ÖHLÉN, Peter , XIA, Ming
CPC分类号： H04J14/0267 , H04L41/0803 , H04L41/12 , H04L41/5058
摘要： A hub node in a wavelength division multiplexed optical network automatically discovers at least one of new client-side optical ports and new edge-side optical ports. The hub node comprises a wavelength switch network, port discovery equipment, and a controller. The wavelength switch network routes any wavelength channel that does not support a matching pair of client-side and edge-side ports to port discovery equipment at the hub node. The port discovery equipment searches for new ports, and, responsive to finding a new port, automatically discovers a predefined set of one or more attributes of the new port. The controller determines that a client-side port and an edge-side port are a matching pair of ports if discovered sets of attributes of those ports match according to one or more predefined rules. The controller then controls the wavelength switch network to re-route the wavelength channel supporting that matching pair between those ports.
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公开(公告)号：EP2862303A1
公开(公告)日：2015-04-22
申请号：EP13747693.3
申请日：2013-06-06
发明人： ÖHLÉN, Peter
IPC分类号： H04J14/02
CPC分类号： H04J14/021 , H04J14/0213
摘要： An access subnetwork node herein comprises one or more add-drop modules, each module including one or more passive optical filters. The one or more add-drop modules are configured to selectively drop a fixed band of wavelength channels from an access subnetwork, via a passive directional coupler, to each of multiple client nodes that actively select to receive client-specific channels within the fixed band. The one or more add-drop modules are also configured to selectively add the fixed band of wavelength channels to the access subnetwork, as received via a passive directional coupler from the multiple client nodes that actively select to transmit client-specific channels within the fixed band. With an access subnetwork node and a client node configured in this way, embodiments herein reduce the complexity and accompanying cost of nodes in an optical network, while also maintaining flexibility for assigning wavelength channels in the network.
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公开(公告)号：EP2710811A1
公开(公告)日：2014-03-26
申请号：EP11865473.0
申请日：2011-05-17
CPC分类号： H04B10/032 , H04B10/25753 , H04J14/0287 , H04W24/04 , H04W88/085
摘要： An Optical Network Unit, ONU, and an Optical Line Terminal, OLT, as well as a respective method therein, are provided for enabling the ONU to communicate with the OLT. The ONU and at least one OLT are comprised in a passive fibre optic access network. The passive fibre optic access network comprises two fibre paths through the network, a main fibre path and a back-up fibre path, connecting the ONU with the OLT. When a fault is detected in the main fibre path is detected, transmission rate negotiation is performed between the ONU and the OLT over the back-up path. When a transmission rate is agreed upon between the ONU and the OLT during said transmission rate negotiation with regard to communication over the back-up path, the communication between the ONU and the OLT is executed using the agreed transmission rate over the back-up path.
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公开(公告)号：EP2366228A1
公开(公告)日：2011-09-21
申请号：EP09830663.2
申请日：2009-11-30
发明人： ÖHLÉN, Peter
IPC分类号： H04J14/02
CPC分类号： H04J14/0282 , H04B10/07955 , H04J14/0235
摘要： An optical network unit for a passive optical network (10), configured to: initiate an upstream wavelength (w
us ) for an upstream signal (US) from the optical network unit to an optical line terminal (10); iteratively, until an iteration criterion is met, i) transmit the upstream signal (US) to the optical line terminal (10), ii) receive from the optical line terminal (10) power level data (p) for the upstream signal (US) as measured by the optical line terminal (10), and iii) set the upstream wavelength (w
us ) for the upstream signal (US) to a new wavelength-value; and adjust the upstream wavelength (w
us ) to a wavelength-value previously set for the upstream signal (US) and associated with power level data corresponding to a certain power level. A passive optical network system, the optical line terminal and related methods are also disclosed.
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