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公开(公告)号：EP0795212B1
公开(公告)日：2002-01-02
申请号：EP96933905.0
申请日：1996-10-03
申请人： Netro Corporation
CPC分类号： H04L1/0057 , H04B1/403 , H04L1/0083 , H04L49/107 , H04L2012/5607 , H04L2012/561 , H04L2012/5616 , H04L2012/5619 , H04L2012/5647 , H04L2012/5652 , H04L2012/5671 , H04L2012/5673 , H04Q11/0478
摘要： A digital radio link suitable for transmitting digital voice or data signals includes an input circuit (61) for ATM or frame relay cells/frames attached to an ATM or Frame Relay network, a forward error correction encoder and decoder (67) with indication of uncorrectable blocks due to burst errors, a payload processing module (64) for modifying bits in the frames or cells so that frames/cells extracted from a forward error correction block containing bit errors will not be misinserted by the network.
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公开(公告)号：EP0981882A1
公开(公告)日：2000-03-01
申请号：EP97939607.4
申请日：1997-09-04
申请人： Netro Corporation
CPC分类号： H04L12/5601 , H04L1/0057 , H04L1/006 , H04L1/0065 , H04L1/0068 , H04L2012/5607 , H04L2012/5608 , H04L2012/561 , H04L2012/5616 , H04L2012/5631 , H04L2012/5632 , H04L2012/5663 , H04L2012/5679 , H04Q11/0478 , H04W74/0891 , H04W88/08
摘要： The present invention provides an efficient point-to-multipoint microwave ATM network including a base station (BS 205) broadcasting a continuous transmission with a sector antenna (200). The system uses time division multiplex (TDM) for downstream transmission and time division multiple access (TDMA) for upstream transmission. The downstream transmission consists of ATM cells encapsulated in MAC protocol data units (PDUs) for forward error correction (FEC) and synchronization. Small Subscriber Terminals (STs),including Subscriber Radio Units (SRUs 202), receive the broadcast and pass it to a Subscriber Access System (SAS 204) that drops the ATM cells addressed only to them. To allow strong FEC protection and to maintain the same symbol rate as the downstream transmission without sacrificing bandwidth, a modified trellis code modulation technique, which incorporates Reed Solomon coding, is used during upstream transmission.
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公开(公告)号：EP1034634A2
公开(公告)日：2000-09-13
申请号：EP98955015.7
申请日：1998-10-20
申请人： Netro Corporation
CPC分类号： H04L12/5601 , H04L2012/5607 , H04L2012/5679
摘要： Methods and systems for a wireless ATM network with high quality of service scheduling are provided. In one embodiment, a wireless ATM network including a base station (100) and a plurality of subscriber terminals (104) with per-VC scheduling, a virtual framer for periodical, requestless scheduling, and a virtual shaper for request-based scheduling are provided.
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公开(公告)号：EP0809896A1
公开(公告)日：1997-12-03
申请号：EP96908457.0
申请日：1996-02-13
申请人： Netro Corporation
CPC分类号： H04L1/0057 , H04B1/403 , H04L1/0083 , H04L49/107 , H04L2012/5607 , H04L2012/561 , H04L2012/5616 , H04L2012/5619 , H04L2012/5647 , H04L2012/5652 , H04L2012/5671 , H04L2012/5673 , H04Q11/0478
摘要： A digital radio link suitable for transmitting digital voice or data signals includes an input circuit (110) for ATM or equivalent cells, a processing circuit to encapsulate the input cells received by the input circuit with at least error check bits (112) so that detected error can identify a specific cell or group of cells, a digital transmission circuit (fig. 12) for transmitting the encapsulated cells via a wireless link, a reception circuit (fig. 12) for receiving encapsulated cells from an opposite side of the digital radio link, a cell decapsulation and error detection circuit (116) connected to the reception circuit and a cell output circuit (110) for connecting the decapsulation circuit to a digital access circuit (AU).
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公开(公告)号：EP0795212A1
公开(公告)日：1997-09-17
申请号：EP96933905.0
申请日：1996-10-03
申请人： Netro Corporation
CPC分类号： H04L1/0057 , H04B1/403 , H04L1/0083 , H04L49/107 , H04L2012/5607 , H04L2012/561 , H04L2012/5616 , H04L2012/5619 , H04L2012/5647 , H04L2012/5652 , H04L2012/5671 , H04L2012/5673 , H04Q11/0478
摘要： A digital radio link suitable for transmitting digital voice or data signals includes an input circuit (61) for ATM or frame relay cells/frames attached to an ATM or Frame Relay network, a forward error correction encoder and decoder (67) with indication of uncorrectable blocks due to burst errors, a payload processing module (64) for modifying bits in the frames or cells so that frames/cells extracted from a forward error correction block containing bit errors will not be misinserted by the network.
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