Granted Patent B2

US 12,356,307 · App. 17/941,130 · Granted Jul 8, 2025

Inventor: Tetsuya Hasegawa (Setagaya, JP)

Assignee: Fujitsu Limited

H04W40/02H04L12/18

Abstract

Claims (43)

1. A wireless communication device comprising:

a processor that generates a first packet; and

a transmitter that wirelessly transmits the first packet generated by the processor, wherein

the processor is configured to:

generate the first packet containing data destined for a plurality of nodes including a first device;

set a destination address different from respective addresses of the plurality of nodes in the first packet, the destination address specifying that the first packet is destined for the plurality of nodes; and

make the first device to determine a transmission destination of the first packet in accordance with the destination address by setting the destination address in the first packet, and to perform a process for a transmission of a second packet different from the first packet in accordance with the first packet.

2. The wireless communication device according to claim 1 , wherein the processor is configured to:

set a first destination address in the first packet when the first packet is broadcast, or set a second destination address different from the first destination address in the first packet when the first packet is multicast; and

make, by setting the first destination address, the first device to determine all nodes connected to a lower position of the first device to be the transmission destination of the first packet.

3. The wireless communication device according to claim 1 , wherein the processor is configured to set in the first packet identification information of a path corresponding to a transfer path of the first packet, the identification information being information for informing the first device about the transmission destination of the first packet.

4. The wireless communication device according to claim 1 , wherein the processor is configured to:

generate a path setting packet with an instruction on a transmission destination of the first packet to a node positioned on a transfer path of the first packet; and

transmit the path setting packet to the node positioned on the transfer path of the first packet before transmitting the first packet.

5. The wireless communication device according to claim 1 , wherein

the first packet is a packet of Backhaul Adaptation Protocol (BAP), and

the setting of the destination address including storing the destination address in a destination address field contained in a header of the first packet.

6. A wireless communication device comprising:

a receiver that receives a first packet;

a processor that determines a transmission destination of the first packet received by the receiver; and

a transmitter that transmits the first packet to the transmission destination determined by the processor, wherein

the processor is configured to:

determine, when a destination address of the received first packet is an address different from an address of the wireless communication device, the destination address specifying that the first packet is destined for a plurality of nodes including the wireless communication device, the transmission destination of the first packet in accordance with the destination address; and

perform a process for a transmission of a second packet different from the first packet in accordance with the first packet.

7. The wireless communication device according to claim 6 , wherein the processor is configured to determine all nodes connected to a lower position of the wireless communication device to be the transmission destination when the destination address of the first packet is a first destination address specifying that the first packet is to be broadcast.

8. The wireless communication device according to claim 6 , wherein the processor is configured to determine in accordance with a path setting packet received in advance of receiving the first packet to be the transmission destination when the destination address of the first packet is a second destination address specifying that the first packet is to be multicast.

9. A wireless communication system comprising:

a first wireless communication device; and

a second wireless communication device, wherein

the first wireless communication device includes:

a first processor that generates a first packet; and

a first transmitter that wirelessly transmits the first packet generated by the first processor,

the first processor is configured to:

generate the first packet containing data destined for a plurality of nodes including a first device and

set a destination address different from respective addresses of the plurality of nodes in the first packet, the destination address specifying that the first packet is destined for the plurality of nodes,

the second wireless communication device includes:

a receiver that receives the first packet transmitted from the first wireless communication device;

a second processor that determines a transmission destination of the first packet received by the receiver; and

a second transmitter that transmits the first packet to the transmission destination determined by the second processor, and

the second processor is configured to:

determine, when a destination address of the first packet specifies that the destination address is destined for the plurality of nodes including the second wireless communication device, a transmission destination of the first packet in accordance with the destination address; and

perform a process for a transmission of a second packet different from the first packet in accordance with the first packet.

10. The wireless communication device according to claim 6 , wherein the processor is configured to determine the transmission destination of the first packet in accordance with the identification information contained in the first packet, the identification information being identification information for identifying a path corresponding to a transfer path of the first packet.

Assignments (2)

Continuity (2)

References Cited (49)