Intelligent preloading algorithm for mobile augmented reality scene

An augmented reality, preloading technology, applied in the field of wireless transmission, which can solve the problem of difficult real-time update of 3D AR content

Active Publication Date: 2021-08-17
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most mobile devices store all holographic content on the device when downloading AR applications. On the one hand, this method requires the storage space of the user device to be large enough; on the other hand, it is difficult to cope with the real-time update of 3D AR content.

Method used

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  • Intelligent preloading algorithm for mobile augmented reality scene
  • Intelligent preloading algorithm for mobile augmented reality scene
  • Intelligent preloading algorithm for mobile augmented reality scene

Examples

Experimental program
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Embodiment

[0030] (1) Assume that in a 10*10 mobile AR area, each 1*1 area is regarded as a sub-area, and the user moves to another sub-area at each time t, and the user has 9 directions in total, which are , Up left, left, down left, down, down right, right, up right, up, stay in place. There are a total of 50 users and 8 AR contents in the network. like figure 2 As shown, the black part represents obstacles such as walls in the simulated actual scene. User m determines state s at time slot t t， status t Determined by the current subregion i and the set of cacheable content. There are a total of 50 users in the network. Numbers 1-8 in the figure indicate the index of the AR content.

[0031] (2) The user's cache space is set to 2. If the user receives a push content, the user chooses one of the current push content and all cached content to discard. action a t Indicates the holographic content discarded at each moment rather than the cached content by time period t. Due to the...

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Abstract

The invention belongs to the technical field of wireless transmission, and particularly relates to an intelligent preloading algorithm for a mobile augmented reality scene. According to the intelligent preloading algorithm, the edge server side learns the track of the user, and the file is pushed to the user before the user reaches a certain holographic content. According to the pushing algorithm, the holographic content is transmitted by using the idle bandwidth so as to improve the transmission efficiency of the edge base station. According to the intelligent preloading algorithm, the motion trail of the user is regarded as a Markov decision process under the scene that the motion trail of the user is not predicted in advance, and the optimal preloading strategy is learned in a self-adaptive mode. The intelligent preload algorithm causes the mobile device to selectively store the received content through its own cache space for future requests. Particularly, in order to solve the problem of learning non-convergence caused by sparse holographic content in a scene, a state correlation Q learning algorithm is provided.

Description

technical field [0001] The invention belongs to the technical field of wireless transmission, and in particular relates to a cache deployment method for a mobile augmented reality (Augmented reality, AR) scene. Background technique [0002] While it is generally accepted that edge computing can be used to optimize AR experiences for multiple users, specific solutions for such settings are currently lacking. Due to the high-resolution and diversity requirements of holographic content for multi-user mobile AR applications, it becomes necessary to solve the problem of holographic content transmission for mobile AR devices. At present, most mobile devices store all holographic content on the device when downloading AR applications. On the one hand, this method requires the storage space of the user device to be large enough, and on the other hand, it is difficult to cope with the real-time update of 3D AR content. To enable the continued growth of mobile AR, existing work utili...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06
CPCH04L67/10H04L67/55H04L67/131
Inventor吴俊韩雨琪胡蝶刘典徐跃东
OwnerFUDAN UNIV