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Cluster D2D (Device-to-Device) resource allocation method based on energy constraint and interference restriction areas

A technology of interference limitation and resource allocation, applied in the field of communication, can solve the problems affecting the communication quality of user equipment, etc., and achieve the effect of improving communication quality

Active Publication Date: 2018-11-13
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing D2D resource allocation method causes greater interference between the cellular user equipment and the D2D user equipment and between the D2D user equipment, which affects the communication quality of the user equipment

Method used

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  • Cluster D2D (Device-to-Device) resource allocation method based on energy constraint and interference restriction areas
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  • Cluster D2D (Device-to-Device) resource allocation method based on energy constraint and interference restriction areas

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Embodiment Construction

[0038] There are three modes of device-to-device (D2D) communication under a cellular network, namely a dedicated mode, a cellular mode and a multiplexing mode. Wherein, the multiplexing mode means that the D2D user equipments in the system perform direct communication between the equipments by multiplexing the resource blocks of the cellular links. This mode can improve the resource utilization rate of the system, but at the same time it will cause a new problem, that is, the problem of mutual interference between user equipments in the cell.

[0039] Resource allocation belongs to the category of interference management. It is to optimize the D2D resource allocation under the condition that the scheduling of the cellular link itself remains unchanged to improve the overall throughput and frequency band utilization of the cell. Wherein, optimizing D2D resource allocation includes how to reduce the interference of the D2D transmitting end to the cellular user equipment and how...

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Abstract

The invention discloses a cluster D2D (Device-to-Device) resource allocation method based on energy constraint and interference restriction areas. The method comprises the steps of obtaining information of energy obtained by D2D user equipment from surroundings before an odd number slot of a current resource scheduling frame is finished; allocating resource blocks to each piece of cellular user equipment, and carrying out calculation to obtain sending power of the D2D user equipment based on the energy obtained by the D2D user equipment from the surroundings; removing the D2D user equipment ofwhich sending power is smaller than a preset minimum sending power threshold from the D2D user equipment; allocating resource blocks to each piece of cellular user equipment, clustering the D2D userequipment by taking the cellular user equipment as cluster heads, based on the interference restriction areas of the cellular user equipment and the interference restriction areas of the D2D user equipment; and allocating the corresponding sending power to the cellular user equipment and the D2D user equipment in each cluster. According to the scheme, the interference between the cellular user equipment and the D2D user equipment can be mitigated, and the communication quality of the user equipment is improved.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method for allocating clustered D2D resources based on energy constraints and interference-limited areas. Background technique [0002] The fifth-generation mobile communication refers to the fifth-generation mobile phone mobile communication standard, also known as the fifth-generation mobile communication technology, abbreviated as 5G in foreign languages, which is an extension after 4G. [0003] In order to meet the increasing demand for local communication load and spectrum efficiency, direct device-to-device communication (D2D, Device-to-Device) has become one of the key technologies of the communication system of the fifth generation mobile communication technology. Different from information transmission through base stations, D2D communication enables mobile devices to perform direct information transmission on local links. By multiplexing cellular user...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/70H04W72/04H04W72/08H04W72/12H04W72/54
CPCH04W4/70H04W72/0473H04W72/1263H04W72/541Y02D30/70
Inventor 施宇锋王斌张河昌谢宁俊
Owner NANJING UNIV OF POSTS & TELECOMM