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A D2D-based high-energy-efficiency content distribution method

A high-energy-efficiency, high-content technology, applied in the field of wireless communication, can solve problems such as not considering network spectrum resources, ignoring content demand convergence scenarios, etc., and achieve the effect of reducing energy consumption

Active Publication Date: 2019-10-01
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods either do not take into account the tightness of network spectrum resources, or ignore the easily occurring scenarios of content demand convergence

Method used

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  • A D2D-based high-energy-efficiency content distribution method
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  • A D2D-based high-energy-efficiency content distribution method

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Embodiment Construction

[0025] The technical solutions and effects of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0026] In the scenario where the content requirements are convergent, the introduction of the D2D communication mode of frequency multiplexing must first consider the interference problem. Assume that the uplink cellular users who communicate with the base station through the uplink frequency band in the network originally form a set N C , new users with the same content requirements form a set N D . New users will form multiple cluster structures, and the user serving as the cluster head will directly obtain information from the base station, and then broadcast data to other users in the cluster through D2D communication. Such as figure 1 In the example scenario shown, the new users form three clusters D1, D2 and D3, and the uplink users originally communicating with the base station in the network include c1, c2, c3 a...

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Abstract

The invention provides a D2D based high energy-efficient content distribution method, and belongs to the field of wireless communications. A frequency spectrum multiplexing problem is modeled as a utility-untransferable alliance formation game problem, and then a merging / splitting algorithm and the Pareto preference relation are used for solving the utility-untransferable alliance formation game problem. The added same-demand users are clustered in the solution, each cluster is used as an alliance, each uplink user is used as one alliance, each new user uncontained in any cluster is used as one alliance, and then the cluster alliance and the uplink user alliance are trying to merge, the method comprises judging whether the merging is successfully according to the Pareto preference relation, if one cluster alliance is unmerged with any uplink user alliance, the cluster alliance is dissolved, each user in the cluster directly receives the data from a base station. Through the adoption of the method provided by the invention, the network entire energy efficiency is improved while guaranteeing the service quality, the energy consumption caused by the communication is reduced, and the frequency band resource is effectively saved.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a wireless network resource allocation technology for effectively improving energy efficiency, in particular to a D2D-based high-energy-efficiency content distribution method. Background technique [0002] The large-scale growth of wireless network equipment and the increasing demand for terminal access have brought serious challenges to network management and information transmission. At the same time, energy consumption in the communication process is also increasing rapidly. How to meet user needs while improving The energy efficiency of wireless networks has become an urgent problem to be solved. In this context, D2D (Device-to-Device) communication, as a new type of communication in the cellular network, is increasingly popular due to its incomparable advantages in increasing the transmission rate and improving energy efficiency. Much attention. Its core idea is to real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/70H04W16/10H04W72/04H04W72/12
CPCH04W4/70H04W16/10H04W72/0453H04W72/1268Y02D30/70
Inventor 席泽国陈亚文邵华路兆铭温向明陆镜宇曾艳焦儒轩
Owner BEIJING UNIV OF POSTS & TELECOMM
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