A content distribution method for joint energy consumption and user fairness under d2d cache network

A user and network technology, applied in the field of content distribution that combines energy consumption and user fairness, can solve problems such as not considering fairness, and achieve the effects of saving transmission energy consumption, good performance, and energy consumption

Active Publication Date: 2020-08-11
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] Aiming at the current content distribution process, the default transmission must be successful, ignoring the energy consumption caused by transmission failure, and also not considering the fairness of the requesting user when obtaining the content, the present invention provides a joint energy consumption under the D2D cache network and user fair content distribution method

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  • A content distribution method for joint energy consumption and user fairness under d2d cache network
  • A content distribution method for joint energy consumption and user fairness under d2d cache network
  • A content distribution method for joint energy consumption and user fairness under d2d cache network

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Embodiment Construction

[0022] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] In the content distribution process of the buffer-based cellular and D2D networks, the present invention not only considers the energy consumption caused by the transmission failure neglected in the prior art, but also considers the fairness of content acquisition by users. System performance is also critical.

[0024] Such as figure 1 As shown, it is a scenario of a cache-based D2D communication system applied by the method of the present invention, and the scenario is a single-cell cellular network assisted by D2D communication. When a user requests a file, it can be obtained from the surrounding cached users through D2D communication. The content distribution method based on cache-based D2D network combined energy consumption and user fairn...

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Abstract

The invention proposes a content distribution method combining energy consumption and user fairness under a D2D cache network, which belongs to the technical field of wireless communication. The implementation steps include: first, simulate the two-way selection process between the requesting user and the cache user in the content distribution process as a maximum weight matching problem in a bipartite graph; then, carry out content distribution through D2D. file k There are M requesting users and N cached users; including the following situations: when M≤N, select M users from the cached users to match the requesting users; when M>N, first select N from the requesting users The user is matched with the cached user; the sum of the weights of the matched users is guaranteed to be the largest. In the content distribution process based on the cached cellular and D2D network, the present invention considers the energy consumption caused by the transmission failure, and also considers the fairness of the content obtained by the user, which can not only save energy consumption, but also ensure the fairness of the content obtained by the user.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a content distribution method combining energy consumption and user fairness under a D2D (Device-to-Device, device-to-device) cache network. Background technique [0002] With the rapid growth of mobile data, the load pressure on the base station in the cellular network is also increasing accordingly. In order to meet the increasing needs of users and provide users with better and higher-quality services, various new technologies have emerged to meet the challenges faced by cellular networks. D2D communication has attracted the attention of many researchers because of its unique advantages of offloading base station load traffic, improving system throughput, reducing delay, and improving spectrum efficiency. The introduction of D2D technology into traditional cellular networks can effectively solve problems such as shortage of spectrum resources and po...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W52/02H04L29/08
CPCH04W4/70H04W52/0209H04L67/568Y02D30/70
Inventor 张鹤立左玉玲纪红李曦
Owner BEIJING UNIV OF POSTS & TELECOMM
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