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1.
公开(公告)号:US20190181957A1
公开(公告)日:2019-06-13
申请号:US16280444
申请日:2019-02-20
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei SU , Qiuyou WU , Limin DONG
IPC: H04B10/516 , H04B10/27 , H04J3/16
Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal in an optical transport network. In the transmission method, a received client signal is mapped into a variable-rate container OTU-N, wherein a rate of the OTU-N is N times as high as a preset reference rate; and then, the variable-rate container OTU-N is split into N optical sub-channel transport units OTUsubs by column, where a rate of each OTUsub equals to the reference rate; next, the N optical sub-channel transport units OTUsubs are modulated onto one or more optical carriers; at last, the one or more optical carriers is transmitted through a fiber.
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公开(公告)号:US20190098381A1
公开(公告)日:2019-03-28
申请号:US16200922
申请日:2018-11-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04Q11/00
Abstract: A service transmission method and a transmission device are disclosed. The method includes: mapping n client signals with a rate of t to ms/t load subareas of m lanes of flexible optical transport network (FlexO) frames, where a payload area of each of the m lanes of FlexO frames is divided into s/t load subareas, and each lane is transmitted using a FlexO lane with a transmission rate of s; configuring a FlexO type, timeslot overhead, and signal mapping information for each lane; and transmitting the m lanes of FlexO frames to a second transmission device by using m FlexO lanes with the transmission rate of s. The second transmission device is configured to parse, according to the FlexO type, the timeslot overhead, and the signal mapping information, the client signals carried in the ms/t load subareas.
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公开(公告)号:US20180091246A1
公开(公告)日:2018-03-29
申请号:US15723991
申请日:2017-10-03
Applicant: Huawei Technologies Co., Ltd.
Inventor: Limin DONG , Qiuyou WU
IPC: H04J3/16
CPC classification number: H04J3/1652 , H04J3/1658 , H04J3/1664
Abstract: Method and apparatus for transporting client signals in an OTN are illustrated. In one embodiment, the method includes: mapping a client signal into a first Optical Channel Data Tributary Unit (ODTU) frame including an ODTU payload area and an ODTU overhead area, such that a plurality of n-bit data units of the client signal are inserted into the ODTU payload area and number information is inserted into the ODTU overhead area; mapping the first ODTU frame into the OPUk frame, such that the plurality of n-bit data units are mapped into an OPUk payload part occupying at least one Tributary Slot (TS) of the OPUk payload area and the number information of the ODTU overhead area is mapped into a first OPUk overhead part of the OPUk frame; forming an Optical Channel Transport Unit-k (OTUk) frame including the OPUk frame for transmission.
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4.
公开(公告)号:US20230353250A1
公开(公告)日:2023-11-02
申请号:US18173990
申请日:2023-02-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei SU , Qiuyou WU , Limin DONG
IPC: H04B10/516 , H04J3/16 , H04B10/27
CPC classification number: H04B10/516 , H04J3/1652 , H04B10/27 , H04J14/0298
Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal in an optical transport network. In the transmission method, a received client signal is mapped into a variable-rate container OTU-N, wherein a rate of the OTU-N is N times as high as a preset reference rate; and then, the variable-rate container OTU-N is split into N optical sub-channel transport units OTUsubs by column, where a rate of each OTUsub equals to the reference rate; next, the N optical sub-channel transport units OTUsubs are modulated onto one or more optical carriers; at last, the one or more optical carriers is transmitted through a fiber.
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5.
公开(公告)号:US20230163872A1
公开(公告)日:2023-05-25
申请号:US17951937
申请日:2022-09-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei SU , Maarten Petrus Joseph VISSERS , Qiuyou WU
CPC classification number: H04J3/1652 , H04J3/16 , H04B10/27 , H04L12/4633
Abstract: A service mapping processing method for an optical transport network, an apparatus, and a system are provided, where the method includes: generating mapping adaptation indication information according to a mapping granularity of a to-be-carried LO ODU, where the mapping granularity is M×g bytes, M is a quantity of timeslots occupied by the to-be-carried LO ODU in an OPUCn, g is a size of a mapping granularity corresponding to each timeslot of the timeslots occupied by the LO ODU, and g is a positive integer greater than 1; mapping, according to the mapping adaptation indication information, the to-be-carried LO ODU to an ODTUCn.M payload area; encapsulating the mapping adaptation indication information into the ODTUCn.M overhead area; encapsulating the ODTUCn.M into an OTUCn; and sending the OTUCn to a receive end device. The method avoids that OTUCns that use different mapping granularities cannot interwork between a receive end and a transmit end.
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公开(公告)号:US20180212683A1
公开(公告)日:2018-07-26
申请号:US15934623
申请日:2018-03-23
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei SU , Maarten Petrus Joseph VISSERS , Qiuyou WU
IPC: H04B10/532 , H04L12/801
Abstract: An embodiment method includes: mapping a to-be-transmitted optical channel unit signal of n times a benchmark rate to X first optical channel physical link signals; adding a link sequence indicator overhead to each of the X first optical channel physical link signals, to generate X second optical channel physical link signals; and modulating and sending the X second optical channel physical link signals by using X preset optical modules in a one-to-one manner. A rate of the first optical channel physical link signal is mi times the benchmark rate, n≥2, X≥2, mi≥1, and ∑ i = 1 X m i = n .
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公开(公告)号:US20230022416A1
公开(公告)日:2023-01-26
申请号:US17881818
申请日:2022-08-05
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei SU , Qiuyou WU , Huaping QING
Abstract: This application provides a data transmission method and apparatus. The method includes: processing, by a network device, a to-be-sent optical data unit ODU to obtain another ODU, where a bit rate of the another ODU is lower than a bit rate of the ODU; and sending, by the network device, the another ODU. In embodiments of this application, the ODU is processed to obtain the another ODU with a lower bit rate, and this helps reduce a rate increase when service data is transmitted in an OTN, so as to reduce an OTN interface rate and OTN costs.
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公开(公告)号:US20210083774A1
公开(公告)日:2021-03-18
申请号:US17103180
申请日:2020-11-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor: Wei SU , Qiuyou WU , Huaping QING
Abstract: This application provides data transmission methods and apparatuses. One method includes: processing, by a network device, a first optical data unit (ODU) to obtain a second ODU, wherein a bit rate of the second ODU is lower than a bit rate of the first ODU; and sending, by the network device, the second ODU.
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公开(公告)号:US20180083891A1
公开(公告)日:2018-03-22
申请号:US15826057
申请日:2017-11-29
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei SU , Chiwu DING , Limin DONG , Qiuyou WU
IPC: H04L12/911 , H04J3/16 , H04Q11/00 , H04L12/919
CPC classification number: H04L47/826 , H04J3/1652 , H04J3/1664 , H04J2203/0067 , H04J2203/0098 , H04L47/765 , H04Q11/0066 , H04Q2011/0086
Abstract: The embodiments of the present invention relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and an ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified.
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10.
公开(公告)号:US20170195077A1
公开(公告)日:2017-07-06
申请号:US15465299
申请日:2017-03-21
Applicant: Huawei Technologies Co., Ltd.
Inventor: Wei SU , Maarten Petrus Joseph VISSERS , Qiuyou WU
Abstract: A service mapping processing method for an optical transport network, an apparatus, and a system are provided, where the method includes: generating mapping adaptation indication information according to a mapping granularity of a to-be-carried LO ODU, where the mapping granularity is M×g bytes, M is a quantity of timeslots occupied by the to-be-carried LO ODU in an OPUCn, g is a size of a mapping granularity corresponding to each timeslot of the timeslots occupied by the LO ODU, and g is a positive integer greater than 1; mapping, according to the mapping adaptation indication information, the to-be-carried LO ODU to an ODTUCn.M payload area; encapsulating the mapping adaptation indication information into the ODTUCn.M overhead area; encapsulating the ODTUCn.M into an OTUCn; and sending the OTUCn to a receive end device. The method avoids that OTUCns that use different mapping granularities cannot interwork between a receive end and a transmit end.
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