Method, system, and device for transmitting data in optical transport network
AssigneeHuawei Technologies Co., Ltd.
InventorsLimin DONG, Chiwu Ding, Qiuyou Wu, Xin Xiao
Life of this patent
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Abstract
A method, a system, and a device for transmitting data in an OTN are disclosed herein. The method for transmitting data in an OTN includes: mapping the at least one pair of ODU0's to an ODTU to form an ODTUvkt, wherein k is greater than or equal to 1, t is 2 or 3, and an external structure of the ODTUvkt is the same as an external structure of an ODTUkt; and mapping the ODTUvkt to timeslot i and timeslot i+n of a 1.25 G ODUt, indicating the type of at least one pair of ODU0's carried in timeslot i to be ODUk, and transmitting the ODUk to a destination node.
Claims8
A method for transmitting data in an Optical Transport Network (OTN), comprising:
- obtaining at least one pair of Optical Channel Data Units-0 (ODU0's);
- mapping the at least one pair of ODU0's to an Optical Channel Data Tributary Unit (ODTU) to form an ODTUvkt, wherein k is greater than or equal to 1, t is 2 or 3, and an external structure of the ODTUvkt is the same as an external structure of an Optical Channel Data Tributary Unit-kt (ODTUkt);
- and
- mapping the ODTUvkt to timeslot i and timeslot i+n of a timeslot cycle of a 1.25 G Optical Channel Data Unit-t (ODUt), indicating a type of at least one pair of ODU0's carried in the timeslot i to be Optical Channel Data Unit-k (ODUk), and transmitting the ODUk to a destination node, wherein n is the number of timeslots in a timeslot cycle of a 2.5 G ODUt.
A network node, comprising:
- a data obtaining unit, adapted to obtain at least one pair of Optical Channel Data Units-0 (ODU0's);
- a mapping unit, adapted to:
- map the at least one pair of ODU0's obtained by the data obtaining unit to an Optical Channel Data Tributary Unit (ODTU) to form an ODTUvkt, where k is greater than or equal to 1, t is 2 or 3, and an external structure of the ODTUvkt is the same as an external structure of an Optical Channel Data Tributary Unit-kt (ODTUkt);
- and
- a mapping and transferring unit, adapted to:
- map the ODTUvkt formed by the mapping unit to timeslot i and timeslot i+n of a timeslot cycle of a 1.25 G Optical Channel Data Unit-t (ODUt), indicate a type of at least one pair of ODU0's carried in the timeslot i to be Optical Channel Data Unit-k (ODUk), and transmit the ODUk to a destination node, wherein n is the number of timeslots in a timeslot cycle of a 2.5 G ODUt.
A network node, comprising:
- a data receiving unit, adapted to:
- receive an Optical Channel Data Unit-t (ODUt) sent by a network node of a 2.5 G timeslot structure, wherein the ODUt carries an Optical Channel Data Tributary Unit (ODTU), and t is 2 or 3;
- a determining unit, adapted to determine that the ODTU carried in the ODUt received by the data receiving unit comprises at least one pair of Optical Channel Data Units-0 (ODU0's);
- and
- an obtaining unit, adapted to obtain the at least one pair of ODU0's if the determining unit determines that the ODTU comprises the at least one pair of ODU0's.
Dependencies are inferred from the claim text.