Method, apparatus, and system for transmitting data

A method for transmitting data, the method comprising:

• receiving, at a second network node, a detection response data packet that is returned by a first network node for a detection interest packet sent by a client, wherein the detection response data packet comprises a content name, a content source identifier, a first expected distance, and a first mobility status record, wherein the first expected distance is a hop count distance for the detection interest packet from the client to the first network node, and wherein the first mobility status record comprises a first status record entry, and the first status record entry is used to record a mobility status of each network node that forwards the detection response data packet to the client;
• adding, at a second network node, a mobility status of the second network node to the first status record entry;
• forwarding, at a second network node, the detection response data packet to the client;
• receiving, at a second network node, a request interest packet that is sent by the client according to the detection response data packet, wherein the request interest packet comprises the content name, the content source identifier, a revised value of the first expected distance, and a hop count, wherein the hop count is used to indicate a quantity of times that the request interest packet is forwarded, and wherein the revised value of the first expected distance is determined by the client according to the first status record entry and the first expected distance in the detection response data packet;
• and
• forwarding, at a second network node, the request interest packet to the first network node according to the revised value of the first expected distance and the hop count.

A method for transmitting data, the method comprising:

• receiving, at a client, a detection response data packet that is returned by at least one network node for a detection interest packet sent by the client;
• selecting, at the client, a first detection response data packet from the received detection response data packets, wherein the first detection response data packet comprises a content name, a content source identifier, a first expected distance, and a first mobility status record, wherein the first expected distance is a hop count distance for the detection interest packet from the client to a first network node, the first mobility status record comprises a first status record entry, and wherein the first status record entry is used to record a mobility status of each network node that forwards the first detection response data packet to the client;
• determining, at the client, a revised value of the first expected distance according to the first status record entry and the first expected distance;
• generating, at the client, a request interest packet, wherein the request interest packet comprises the content name, the content source identifier, the revised value of the first expected distance, and a hop count, and wherein the hop count is used to indicate a quantity of times that the request interest packet is forwarded;
• and
• sending, from the client, the request interest packet to the at least one network node.

A first network node comprising:

• a first receiving unit configured to receive a detection interest packet sent by a second network node, wherein the detection interest packet comprises a content name;
• a first generation unit configured to generate a detection response data packet according to the content name, wherein the detection response data packet comprises the content name, a content source identifier, a first expected distance, and a first mobility status record, wherein the first expected distance is a hop count distance for the detection interest packet from a client to the first network node, wherein the first mobility status record comprises a first status record entry, and wherein the first status record entry is used to record a mobility status of each network node that forwards the detection response data packet to the client;
• a first adding unit configured to add a mobility status of the first network node to the first status record entry;
• a first sending unit configured to send the detection response data packet to the second network node so that each network node that forwards the detection response data packet to the client adds the mobility status of the network node to the first status record entry and sends the detection response data packet to the client;
• and
• a second receiving unit configured to receive a request interest packet sent by the second network node, wherein the request interest packet comprises the content name, the content source identifier, and a revised value of the first expected distance, wherein the revised value of the first expected distance is determined by the client according to the first status record entry and the first expected distance in the detection response data packet.

A second network node comprising:

• a first receiving unit configured to receive a detection response data packet that is returned by a first network node for a detection interest packet sent by a client, wherein the detection response data packet comprises a content name, a content source identifier, a first expected distance, and a first mobility status record, wherein the first expected distance is a hop count distance for the detection interest packet from the client to the first network node, wherein the first mobility status record comprises a first status record entry, and wherein the first status record entry is used to record a mobility status of each network node that forwards the detection response data packet to the client;
• a first adding unit configured to add a mobility status of the second network node to the first status record entry;
• a first forwarding unit configured to forward the detection response data packet to the client;
• a second receiving unit configured to receive the request interest packet that is sent by the client according to the detection response data packet, wherein the request interest packet comprises the content name, the content source identifier, a revised value of the first expected distance, and a hop count, wherein the hop count is used to indicate a quantity of times that the request interest packet is forwarded, the revised value of the first expected distance being determined by the client according to the first status record entry and the first expected distance in the detection response data packet;
• and
• a second forwarding unit configured to forward the request interest packet to the first network node according to the revised value of the first expected distance and the hop count.