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D2D group multi-object caching method based on social content, system and device thereof

A caching system and multi-objective technology, applied in transmission systems, machine-to-machine/machine-type communication services, data processing applications, etc., can solve the problem of ignoring user social factors and inability to maximize the integration and utilization of data resources of D2D systems, etc. problem, to achieve the effect of reducing the number of transmissions and improving transmission efficiency

Active Publication Date: 2021-10-26
FOSHAN SHUNDE SUN YAT SEN UNIV RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing D2D caching schemes focus on the user's preference requirements for data packets, such as how to make the user obtain more preference packets, but ignore the social factors of the user itself, especially the social cost of communication between users, even if It is possible to obtain the preference package but still need to pay a large social cost, that is, it is impossible to maximize the integration and utilization of data resources of the D2D system

Method used

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  • D2D group multi-object caching method based on social content, system and device thereof
  • D2D group multi-object caching method based on social content, system and device thereof
  • D2D group multi-object caching method based on social content, system and device thereof

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Experimental program
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Effect test

Embodiment 1

[0082] refer to figure 1 and figure 2 , a D2D grouping multi-object caching method based on social content, comprising the following steps:

[0083] S1. Determine the HUE in the D2D system through the eNB and initialize parameters;

[0084] S2. Calculate the Jaccard similarity jac between HUE and other VUEs u and Jaccard distance d u , respectively expressed as: d u = 1-jac u ; OK d u The set of VUE that is not 0 is BUE;

[0085] Among them, K is the number of social attributes of HUE;

[0086] S UK for BUE i Whether it has the judgment amount of the kth social attribute of HUE, 0UK <1;

[0087] BUE is a set of VUEs with at least one same social attribute with HUE, expressed as BUE={BUE i |i=1,2,...,I};

[0088] S3. Calculate the number Q of cached data packets, expressed as:

[0089]

[0090]

[0091] Among them, the first item of the above formula is the number of data packets obtained based on the wireless link quality, user satisfaction with HUE and B...

Embodiment 2

[0116] D2D group multi-object caching system based on social content, including:

[0117] The initial module is used to determine the HUE in the D2D system and initialize parameters through the eNB;

[0118] BUE determination module, used to calculate the Jaccard similarity jac between HUE and other VUEs u and Jaccard distance d u , respectively expressed as: d u = 1-jac u ; OK d u The set of VUE that is not 0 is BUE;

[0119] The data packet calculation module is used to calculate the number Q of cached data packets, expressed as:

[0120]

[0121]

[0122] Among them, the first item of the above formula is the number of data packets obtained based on the wireless link quality, user satisfaction with HUE and BUE, and the minimum social cost, and the second item is when the HUE cache package is the same as the HUE preference package The number of data packets obtained;

[0123] The transmission module is used to transmit the buffered data packets to other VUEs b...

Embodiment 3

[0127] The D2D packet multi-object caching device based on social content includes: a processor and a memory for storing processor-executable instructions; the processor reads the executable instructions and performs the following steps:

[0128] Determine the HUE in the D2D system through the eNB and initialize the parameters;

[0129] Calculate the Jaccard similarity jac between HUE and other VUEs u and Jaccard distance d u , respectively expressed as: d u = 1-jac u ; OK d u The set of VUE that is not 0 is BUE;

[0130] Calculate the number of cached data packets Q, expressed as:

[0131]

[0132]

[0133] Among them, the first item of the above formula is the number of data packets obtained based on the wireless link quality, user satisfaction with HUE and BUE, and the minimum social cost, and the second item is when the HUE cache package is the same as the HUE preference package The number of data packets obtained;

[0134] The buffered data packets are tran...

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Abstract

The present invention discloses a D2D grouping multi-target caching method based on social content and its system and device. Based on the D2D caching strategy, the number of cached data packets can be obtained under optimal conditions. The caching strategy is based on wireless link quality and user preference. In particular, by looking for BUE that has at least the same social attributes as HUE, it is easy to dilute the irrelevant social attributes of users, thereby weakening the corresponding unnecessary social costs, so that the actual social costs paid by users The cost is small, but the user's preference packet can also be obtained; at the same time, using the vertex coloring algorithm to transmit the cached data packets to other VUEs helps reduce the number of HUE transmissions, thereby improving the overall transmission efficiency. The invention fully considers the wireless link quality, the social cost of communication between users and the user's own preference, and enables the user to obtain the preference package at a relatively small social cost.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a social content-based D2D packet multi-object caching method, system and device thereof. Background technique [0002] As one of the key technologies in 5G mobile communication, Device-to-Device (D2D) can directly establish a communication channel between adjacent terminal devices without or only a small amount of assistance from the base station, so it can Effectively increase the capacity of the cellular network and reduce the business load of the base station and core network. [0003] With the advent of the digital life era, mobile data traffic is expected to increase 100 times within ten years, which is a huge challenge for cellular networks. With the evolution of mobile communication systems from 4G to 5G, the network architecture has also evolved from User-Centric (UC) to Data-Centric (DC). In recent years, with the increase of cache space and computing power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04L29/08G06Q50/00
CPCH04W4/70G06Q50/01H04L67/568
Inventor 江明施震威吴宽陈榕佘峰霞
Owner FOSHAN SHUNDE SUN YAT SEN UNIV RES INST
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