Distributed storage method, device and electronic equipment based on multi-hop cooperation
A distributed storage, multi-hop collaboration technology, applied in electrical components, machine-to-machine/machine-type communication services, wireless communication, etc., can solve the problems of data failure to be forwarded, high loss rate of data to be forwarded, and easy failure.
Active Publication Date: 2019-12-13
BEIJING UNIV OF POSTS & TELECOMM
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However, if a node is randomly selected to replace the failed node, the selected node has poor stability and is prone to failure, which will lead to the failure of the data to be forwarded. In the existing distributed storage scheme, the loss rate of the data to be forwarded is high. poor reliability
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] In the loT network architecture, if a node in the current cell caches data to be forwarded, due to node movement, energy consumption, storage space, and other reasons, the node cannot continue to provide data to be forwarded for nodes in the current cell, then the node is called Node failure. For example, the mobility of users (users carry nodes with them) makes the contact between nodes complicated, and cannot guarantee the effective transmission of da...
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The invention provides a distributed storage method based on multi-hop cooperation, a distributed storage device, and electronic equipment. The distributed storage method based on the multi-hop cooperation comprises steps that when nodes of a first node set are failed, a predetermined threshold number is acquired; all of nodes capable of carrying out effective communication with the nodes of the first node set, the number of which is greater than or equal to the above mentioned predetermined threshold number, are selected from other nodes except the nodes of the first node set in a current cell, and are used as a second node set; according to a degree of correlation between every node of the second node set and the current cell, cache nodes are selected in the second node set; in an effective communication range, the nodes of the first node set, the number of which is the threshold number, are selected, and the content fragments cached by the failure nodes are recovered in the cache nodes. By adopting the above mentioned method, an effective rate of to-be-forwarded data during communication using D2D is improved, and communication reliability is improved.
Description
technical field [0001] The present invention relates to the technical field of distributed storage, in particular to a distributed storage method, device and electronic equipment based on multi-hop cooperation. Background technique [0002] loT (Internet of Things, Internet of Things) connects users with limited storage capacity and computing power, and users can communicate with each other and share resources through loT. The amount of data collected by devices in the loT is large and diverse. Under this premise, caching is regarded as an effective solution to ensure high information transmission quality. In the loT network architecture, the cached information can be transmitted between mobile terminals or other smart devices through D2D (Device-to-device, device-to-device communication), thus reducing the burden of communication infrastructure, such as AP (Access point, access point) Access point) or BS (Base Station, base station) communication pressure, and can effectiv...
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IPC IPC(8): H04W28/14H04W4/70
CPCH04W28/14
Inventor 王莉宋梅满毅吴华清魏青
Owner BEIJING UNIV OF POSTS & TELECOMM