Content central multi-hop cellular network routing method and device

Abstract

The embodiment of the invention provides a content central multi-hop cellular network routing method and device. The method comprises the steps that a first node broadcasts content identifiers to nodes in the i-hop range of the first node, and therefore a second node in the i-hop range of the first node determines first routing information of a forwarded interest package, and a first directory node broadcasts content identifiers and a first directory node identifier to a second directory node and nodes within the coverage range of the first directory node. According to the method, forwarding nodes which are located in the same area with the position of target content are determined through the position of the target content, a forwarding node forwards the interest package in the direction of the position of the target content, and compared with the mode that the nodes inform all nodes in the network of cache content, consumption of wireless spectrum resources in the network is reduced, consumption of electricity in the nodes is reduced, the network resource utilization rate is improved, and the survival time of the network nodes is prolonged.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a content-centric multi-hop cellular network routing method and device. Background technique [0002] In a content-centric multi-hop cellular network (Content Centric Multi-hop Cellular Networks, CCMCN for short), multi-hop forwarding of information can be implemented between mobile terminals. [0003] The multi-hop forwarding between mobile terminals is based on the Open Shortest Path First (OSPF) routing protocol: if a node stores content A, it floods and broadcasts the identification information of content A, and receives the content A The node that identifies the information adds the identification information of the content A and the port number that receives the identification information to its corresponding FIB table, and broadcasts (Link State Advertisement, LSA for short) the identification information of the content A, and other nodes receive Aft...

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, when a node has content to update, it needs to flood broadcast in the entire cell until all nodes receive the broadcast information, so there is information overlap and information "implosion" phenomenon, which will accelerate the consumption of limited wireless spectrum in the network Resources, as well as node power, lead to low utilization of network resources and reduce the survival time of network nodes

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