Unlock instant, AI-driven research and patent intelligence for your innovation.

Mobile Edge Cache Placement Method Using Request Rate and Dynamics of Content Published by Information Sources

An edge caching and content caching technology, applied in the direction of climate sustainability, advanced technology, sustainable communication technology, etc., can solve the problem of inapplicability of the MPF scheme, reduce the average service delay, improve user experience, and reduce the backhaul chain The effect of road pressure

Active Publication Date: 2022-07-08
BEIHANG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the SPC is dynamic (that is, the dynamic content item in the SPC, referred to as DC-SPC), the MPF scheme is not applicable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mobile Edge Cache Placement Method Using Request Rate and Dynamics of Content Published by Information Sources
  • Mobile Edge Cache Placement Method Using Request Rate and Dynamics of Content Published by Information Sources
  • Mobile Edge Cache Placement Method Using Request Rate and Dynamics of Content Published by Information Sources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0098] The present invention will be further described in detail below with reference to the accompanying drawings.

[0099] figure 1 It is a scene graph of the Internet of Vehicles. All the vehicles in the picture are connected together through the Internet. A roadside communication unit (RSU), a user (user), and a source node (source node) communicate wirelessly.

[0100] In the present invention, source published content (SPC, sourcepublish content) is divided into static content entry (SC-SPC) and dynamic content entry (DC-SPC) according to whether the published content changes with time. The context information (CIF) reflects the changes of the surrounding environment over time, which belongs to a dynamic content item (DC-SPC). Due to the dynamic nature of CIF, the source will generate new content versions to reflect the latest environmental status, so RSU needs to refresh the content version to avoid users getting outdated and invalid requested content. For the CIF, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an edge cache placement method that adopts the request rate and dynamicity of content published by a source, which is how to select a cached content set from massive dynamic content when the cache space of a roadside communication unit is limited, so that the Maximize the amount of data directly served by the RSU cache, significantly reducing backhaul link stress. The invention firstly initializes the system to obtain the parameters required for the execution method; then calculates the cache hit rate of the content; abstracts the cache placement problem into a 0 / 1 knapsack problem to obtain the cached content set; and then the roadside communication unit serves user requests. The present invention pays attention to dynamic content items, and performs cache placement by jointly considering the request arrival rate and dynamicity of content published by the information source, so as to ensure the timeliness of content received by users, and at the same time maximize the amount of data directly served by the roadside communication unit cache , thereby significantly reducing redundant data transmission and reducing the pressure on the backhaul link.

Description

technical field [0001] The present invention relates to a cache placement processing method for source published content (SPC, source publish content) in a roadside communication unit (RSU, road side unit), and more particularly, to a request arrival rate (SPC) using SPC ( λ) and the dynamicity (μ) of DC-SPC are used to process edge buffer placement. Background technique [0002] In the technical field of Internet of Vehicles (IOV, Internet of Vehicles), a roadside communication unit (RSU, roadside unit) is an infrastructure built on the roadside to realize the connection between the vehicle and the Internet. RSU follows the national standard GB20851, and the communication frequency is 5.8GHz for service. RSU is composed of high-gain directional beam control read-write antenna and radio frequency controller. The high-gain directional beam control read-write antenna is a microwave transceiver module, responsible for signal and data transmission and reception, modulation and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/12H04L67/10
CPCH04L67/12H04L67/10Y02D30/70
Inventor 张珊罗洪斌王柳迪
Owner BEIHANG UNIV