Named data network caching method, buffer and storage medium
A named data network and cache technology, applied in the field of communication, can solve the problems of long delay time of information cache, high packet loss rate, no consideration, etc., achieve good cache space utilization, reduce data redundancy, and reduce the average number of hops and the effect of delay
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Embodiment 1
[0056] See figure 1 , figure 1 It is a flowchart of a named data network caching method provided by an embodiment of the present invention. The named data network caching method of the present invention comprises the following steps:
[0057] S110, judging the state of the node;
[0058] S120, according to the state of the node and the pending interest table, obtain the preference of the node for the classification interest packet;
[0059] S130, calculate and obtain the local popularity of the classified data package according to the pending interest table;
[0060] S140. Calculate and obtain a cache probability according to the preference degree and the local popularity;
[0061] S150. Compare the caching probability with a caching probability threshold, and decide whether to cache.
[0062] Wherein, before step S110, may also include:
[0063] S111, according to the vehicle density, divide the road area into a core zone and a peripheral zone;
[0064] S112, according...
Embodiment 2
[0087] See figure 2 , image 3 with Figure 4 , figure 2 It is a flowchart of a named data network caching method system system provided by an embodiment of the present invention, image 3 It is a specific flowchart of a named data network caching method provided by an embodiment of the present invention, Figure 4 It is a schematic diagram of node communication of a vehicle ad hoc network provided by the embodiment of the present invention. This embodiment further describes the named data network caching method of the present invention in detail on the basis of the above embodiments.
[0088] Before describing specific embodiments, please refer to image 3 shown in image 3 Among the displayed urban road vehicles, the consumer represents the vehicle that sends the Interest packet, the neighbor node represents the vehicles around the vehicle that sends the Interest packet, the forwarding node represents the vehicle that forwards the Interest packet and data packet, and...
Embodiment 3
[0118] See Figure 5 with Image 6 , Figure 5 is a schematic structural diagram of a named data network storage provided by an embodiment of the present invention, Image 6 It is a flowchart of a program executed by a named data network storage provided by the embodiment of the present invention. The named data network storage 300 of this embodiment includes a memory 301 and a processor 302; wherein, the memory stores 301 a computer program, and the processor 301 implements the following steps when executing the computer program:
[0119] S310, judging the state of the node;
[0120] S320, according to the state of the node and the pending interest table, obtain the preference of the node for the classification interest packet;
[0121] S320. Obtain the local popularity of the classified data packets according to the pending interest table;
[0122] S340. Calculate and acquire cache probability according to the preference degree and the local popularity;
[0123] S350. ...
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