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US 11,575,458 B2Granted
Service transmitting and receiving methods and devices for optical transport network (OTN)
AssigneeZte Corporation
InventorsYuanbin Zhang, Yan Yuan
Life of this patent
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Abstract
The present application provides data transmitting and receiving methods and devices for an Optical Transport Network (OTN). The service transmitting method for the OTN includes that: Optical Data Unit (ODU) services are mapped into cells of a payload area of an OTN interface frame, the payload area including N cells with a fixed size, one cell being used for carrying one ODU service and N being an integer larger than or equal to 1; and the OTN interface frame is encapsulated and transmitted.
Claims19
A service transmitting method for an Optical Transport Network (OTN), comprising:
- mapping Optical Data Unit (ODU) services into cells of the payload area of an OTN interface frame, the payload area comprising N cells with a fixed size, one cell being used for carrying one ODU service, and N being an integer larger than or equal to 1;
- and
- encapsulating and transmitting the OTN interface frame;
- wherein, the number of the cells allocated for the ODU service in each frame is the same;
- wherein the number of ODU services is M, the ODU services are numbered as Cj, j is 1 to M and M is an integer larger than or equal to 1, and mapping the ODU services into the cells of the payload area of the OTN interface frame comprises:
- allocating a predetermined number of cells among the cells of the payload area to each ODU service, Sj cells in the N cells being allocated for the j-th ODU service;
- and mapping the M ODU services to respective predetermined numbers of cells, the j-th ODU services being mapped to the Sj cells in the N cells.
4 more elements
A service receiving method for an Optical Transport Network (OTN), comprising:
- receiving an OTN interface frame, the payload area of the OTN interface frame comprising N cells with a fixed size, one cell carrying one Optical Data Unit (ODU) service, and N being an integer larger than or equal to 1;
- and
- demapping ODU services from the N cells of the payload area of the OTN interface frame;
- wherein, the number of the cells allocated for the ODU service in each frame is the same;
- wherein the number of ODU services is M, the ODU services are numbered as Cj, j is 1 to M and M is an integer larger than or equal to 1, and the ODU services are mapped into the cells of the payload area of the OTN interface frame according to the following method:
- allocating a predetermined number of cells among the cells of the payload area to each ODU service, Sj cells in the N cells being allocated for the j-th ODU service;
- and mapping the M ODU services to respective predetermined numbers of cells, the j-th ODU services being mapped to the Sj cells in the N cells.
4 more elements
A service transmitting device for an Optical Transport Network (OTN), comprising:
- a mapping processor, configured to map Optical Data Unit (ODU) services into cells of the payload area of an OTN interface frame, the payload area comprising N cells with a fixed size, one cell being used for carrying one ODU service, and N being an integer greater than 1;
- and
- a transmitter, configured to encapsulate and transmit the OTN interface frame;
- wherein, the number of the cells allocated for the ODU service in each frame is the same;
- wherein the mapping processor comprises:
- an allocation unit, configured to, when the number of ODU services is M the ODU services are numbered as Cj, j being 1 to M and M is an integer larger than or equal to 1, allocate a predetermined number of cells among the cells of the payload area to each ODU service, Sj cells in the N cells being allocated for the j-th ODU service;
- and a mapping unit, configured to map the M ODU services to respective predetermined numbers of cells, the j-th ODU services being mapped to the Sj cells in the N cells.
4 more elements
A service receiving device for an Optical Transport Network (OTN), comprising:
- a receiver, configured to receive an OTN interface frame, the payload area of the OTN interface frame comprising N cells with a fixed size, one cell carrying one Optical Data Unit (ODU) service, and N being an integer greater than 1;
- and
- a demapping processor, configured to demap ODU services from the N cells of the payload area of the OTN interface frame;
- wherein, the number of the cells allocated for the ODU service in each frame is the same;
- wherein the number of ODU services is M, the ODU services are numbered as Cj, j is 1 to M and M is an integer larger than or equal to 1, and the ODU services are mapped into the cells of the payload area of the OTN interface frame according to the following method:
- allocating a predetermined number of cells among the cells of the payload area to each ODU service, Sj cells in the N cells being allocated for the j-th ODU service;
- and mapping the M ODU services to respective predetermined numbers of cells, the j-th ODU services being mapped to the Sj cells in the N cells.
4 more elements
Dependencies are inferred from the claim text.