A Mobile Random D2D Network Data Query Method Based on Minimum Overhead Path

Abstract

The invention discloses a mobile random D2D network data query method based on a minimum overhead path. The method performs routing on a newly generated data request in a D2D network: the carrying node of the data request encounters an encounter node, and judges whether the encounter node is a data request. Provider, if so, send the data request to the encounter node, and the route ends, otherwise calculate the k-hop reachable expertise of the carrying node and the encounter node respectively; then calculate the ability of the carrying node and the encounter node to help the data request find the data provider node , the carrying node routes the data request to the carrying node and the meeting node according to the above capabilities, as the new carrying node; according to the delay budget of the real-time update data request, if the delay budget is not reduced to 0, repeat The above process, otherwise the routing ends. The method can maintain the data success reply rate in the network at a high level and minimize the overall path overhead of the network.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a data query method of a mobile random D2D network based on a minimum overhead path. Background technique [0002] The vast majority of today's wireless communication systems operate in the sub-3 GHz microwave spectrum, which is therefore experiencing severe shortages and has become a crowded and limited resource. To meet the challenge of a 1000-fold increase in mobile bandwidth traffic, millimeter-scale microwave bandwidth operating at 20 to 300 GHz is considered to be the most promising candidate for the next-generation cellular system (5G). While the use of millimeter-scale microstrips addresses the urgent need for more wireless spectrum, it also brings a new set of unique technical challenges, such as severe line loss and unwanted coverage holes. Based on this, mobile user equipment direct transmission (Device-to-Device Communication) is considered as a...

AI Technical Summary

Problems solved by technology

But this kind of server is unavailable in the mobile random D2D network, everyone's handheld device must perform distributed data storage and calculation

[0007] 3. Unknown or inaccurate expertise: When a node sends a data request, it usually does not realize which nodes have enough expertise to answer the data request, because building a P2P network like data and data providers Retrieval is too expensive

[0008] At present, data query methods based on the characteristics of mobile random D2D network data query and with low path overhead need to be studied

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