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Mobile edge cache network-based cache placement optimization method

An edge cache and cache optimization technology, applied in electrical components, wireless communication, etc., can solve the problem of single scene and achieve the effect of wide application range and precise performance

Active Publication Date: 2019-03-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current research considers too single scenarios, all of which assume that users in the wireless network have the same needs

Method used

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  • Mobile edge cache network-based cache placement optimization method
  • Mobile edge cache network-based cache placement optimization method
  • Mobile edge cache network-based cache placement optimization method

Examples

Experimental program
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Embodiment

[0044] In order to realize the cache deployment optimization based on SVC, the present invention realizes through the following technical scheme, mainly comprises the following steps:

[0045] 1) Suppose there are 2 videos in the wireless network, and each user requests a video file at every moment. Each video is separated into a base layer and an enhancement layer by SVC encoding, that is, there are 4 files in the whole wireless network. The cache capacity of the base station is 2, that is, each base station can cache two files.

[0046] 2) According to the current setting, each base station has 6 combinations without considering the condition of caching the same file. In the following, the local maximum of the probability of successful transmission is obtained by optimizing the probability of each combination. The sum of the probabilities of all combinations is 1.

[0047] 3) According to the definition of successful transmission probability

[0048]

[0049] Given a b...

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Abstract

The invention provides a video-oriented caching strategy for QoE of different users in a mobile edge cache network. Under the condition of SVC encoding, different encoding layers of a video are separately stored, and the strategy provided by the invention can achieve a relatively high successful transmission probability to increase the QoE of the users. The strategy provided in the text is applicable to actual wireless video propagation scenes; and in consideration of actual interference and noise terms, a cache scheme is provided according to the current video popularity.

Description

technical field [0001] The invention relates to a cache placement optimization strategy based on a mobile edge cache network, and proposes a generalized cache placement optimization method for different user requirements. Background technique [0002] As the data traffic of mobile wireless networks continues to increase and the needs of mobile users become more and more diverse, limited bandwidth and spectrum resources can no longer meet people's daily needs. Under such conditions, the mobile edge cache network uses the method of deploying cache at the base station to reduce the throughput of the entire link from the server to the user, thereby achieving more efficient transmission efficiency. [0003] Because video content has different popularity levels within a certain period of time, videos with high popularity levels will be repeatedly requested and played by a large number of users. Without considering the edge cache, the user request is sent to the cloud server throu...

Claims

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Application Information

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IPC IPC(8): H04W24/02
CPCH04W24/02
Inventor 吴俊韩雨琪王睿钱亦宸程松林吕文静
Owner TONGJI UNIV
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