Data routing method and apparatus, node, and storage medium

A data routing method, comprising:

• generating, by a generation node in a first topology, a packet, wherein a header of the packet comprises first information, and the first information is used to indicate ownership of a destination node of the packet;
• and
• sending, by the generation node, the packet to a boundary node,
• wherein in a case that the destination node of the packet belongs to a second topology, the generating, by the generation node in the first topology, the packet comprises:
• generating, by the generation node, the packet, wherein a backhaul adaptation protocol (BAP) destination address in the first information in the header of the packet is the same as a third BAP virtual address, and the third BAP virtual address is used to indicate that cross-topology routing needs to be performed for the packet;
• and the third BAP virtual address is configured for the boundary node by a first CU in the first topology or a second CU in the second topology.

A boundary node, comprising a processor, a memory, and a program or an instruction that is stored in the memory and executable on the processor, wherein the program or the instruction is executed by the processor to implement:

• receiving, by the boundary node, a packet in a first topology;
• determining, by the boundary node, ownership of a destination node of the packet based on first information in a header of the packet;
• in a case that the destination node of the packet belongs to a second topology, re-writing, by the boundary node, the header of the packet based on the first information;
• and
• transmitting, by the boundary node, a re-written packet to the destination node in the second topology,
• wherein the determining, by the boundary node, the ownership of the destination node of the packet based on the first information in a header of the packet comprises:
• in a case that the boundary node determines that a backhaul adaptation protocol (BAP) destination address in the first information is the same as a third BAP virtual address of the boundary node, determining that the destination node of the packet belongs to the second topology, wherein
• the third BAP virtual address is used to indicate that cross-topology routing needs to be performed for the packet, and the third BAP virtual address is configured for the boundary node by a first CU in the first topology or a second CU in the second topology.