Network transmission methods and related device thereof

A method, comprising:

• determining, by a first network device, a first planned latency based on a traffic characteristic of a data flow, wherein the first planned latency is a maximum latency for transmitting the data flow in a first network domain, and the first network domain is a network domain in time-sensitive networking (TSN);
• updating, by the first network device, a first accumulated latency based on the first planned latency, wherein the first accumulated latency is a maximum accumulated latency of the data flow from a source node to a destination node in the TSN, and the source node and the destination node belong to different network domains in the TSN;
• and
• based on that the first accumulated latency is not greater than a target latency, sending, by the first network device, a first message to a second network device, wherein the first message indicates the first accumulated latency, the target latency is a needed latency of the data flow from the source node to the destination node in the TSN, the second network device belongs to a second network domain in the TSN, and the second network domain is a next network domain of the first network domain.

A network device, wherein the network device comprises:

• a non-transitory memory storing instructions;
• and
• at least one processor coupled to the non-transitory memory, wherein the instructions, when executed by the at least one processor, cause the network device to perform operations including:
• determining a first planned latency based on a traffic characteristic of a data flow, wherein the first planned latency is a maximum latency for transmitting the data flow in a first network domain, and the first network domain is a network domain in time-sensitive networking (TSN);
• wherein
• updating a first accumulated latency based on the first planned latency, wherein the first accumulated latency is a maximum accumulated latency of the data flow from a source node to a destination node in the TSN, and the source node and the destination node belong to different network domains in the TSN;
• and
• based on that the first accumulated latency is not greater than a target latency, sending a first message to a second network device, wherein the first message indicates the first accumulated latency, the target latency is a needed latency of the data flow from the source node to the destination node in the TSN, the second network device belongs to a second network domain in the TSN, and the second network domain is a next network domain of the first network domain.

A network device, wherein the network device comprises:

• a non-transitory memory storing instructions;
• and
• at least one processor coupled to the non-transitory memory, wherein the instructions, when executed by the at least one processor, cause the network device to perform operations including:
• receiving a fourth message from a fourth network device, wherein the fourth message indicates a first accumulated latency and a traffic characteristic of a data flow, the first accumulated latency is a maximum accumulated latency of the data flow from a source node to a destination node in time-sensitive networking (TSN), the source node and the destination node belong to different network domains in the TSN, the network device and the destination node belong to a third network domain in the TSN, and the fourth network device belongs to a previous network domain of the third network domain;
• and
• determining a third planned latency based on the traffic characteristic of the data flow, wherein the third planned latency is a maximum latency for transmitting the data flow in the third network domain;
• updating the first accumulated latency based on the third planned latency;
• and
• determining, based on the first accumulated latency and a target latency, whether a reserved resource for the data flow is successfully configured, wherein the target latency is a needed latency of the data flow from the source node to the destination node in the TSN.