Content-centric multi-hop cellular network routing method and device

A content-centric, cellular network technology, applied in the field of communication, can solve problems such as information overlap, low network resource utilization, and information implosion, and achieve the effects of reducing consumption, improving network resource utilization, and ensuring hit rate and delay

CN104093181BActive Publication Date: 2017-09-12BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-09-12

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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.
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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...

Examples

Embodiment Construction

[0038] figure 1 A network topology diagram applicable to the content-centric multi-hop cellular network routing method provided by the embodiment of the present invention. The content-centric multi-hop cellular network routing method provided by the embodiment of the present invention is applicable to such as figure 1 The network topology shown, figure 1 The cellular network shown is composed of a base station with management and control functions and a mobile terminal with content caching and relay forwarding functions. The base station determines multiple directory nodes, and each directory node has a certain coverage, such as the dotted circle Area, the content center multi-hop cellular network routing method provided by the embodiment of the present invention is as follows:

[0039] The first node broadcasts the content identifier to nodes within the range of i hops, and the nodes within the range of i hops include the first directory node, so that the second node within...