Lossless data transmission communication method, apparatus, and system

A communication apparatus, comprising:

• at least one processor;
• and
• at least one memory storing instructions for execution by the at least one processor;
• wherein, when executed, the instructions cause the communication apparatus to perform operations comprising:
• obtaining a first IP address, wherein the first IP address is at least one IP address of a first network node when the first network node is connected to a third network node, and the third network node is a source donor node of the first network node, and wherein the communication apparatus is a target donor node central unit (CU) of the first network node or a chip of the target donor node CU;
• and
• sending the first IP address to a second network node, wherein the first IP address is of a first data packet, a destination node of the first data packet is the third network node and the second network node is a target donor node distributed unit (DU) of the first network node.

A communication system, comprising:

• a second network node;
• and a fourth network node, wherein:
• the second network node is configured to perform operations comprising:
• receiving a first data packet from a first network node, wherein the second network node is a target donor node distributed unit (DU) of the first network node, a destination node of the first data packet is a third network node, and the third network node is a source donor node of the first network node;
• obtaining a first IP address, wherein the first IP address is at least one IP address of the first network node when the first network node is connected to the third network node;
• and
• sending the first data packet to the third network node based on the first IP address;
• the fourth network node is configured to perform operations comprising:
• obtaining the first IP address, wherein the fourth network node is a target donor node central unit (CU) of a first network node;
• and
• sending the first IP address to the second network node, and the second network node is a target donor node DU of the first network node.