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A d2d communication resource allocation method in a wireless cellular network

A communication resource allocation and wireless cellular network technology, which is applied in wireless communication, network traffic/resource management, network planning, etc., can solve the problem of lack of mode switching methods in LTE networks, and achieve the effect of simplifying system design and improving spectrum efficiency

Inactive Publication Date: 2018-12-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0026] The purpose of the present invention is to solve the problem of the lack of a reasonable mode switching method in the LTE network in the prior art, and propose a D2D communication resource allocation method in the wireless cellular network

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  • A d2d communication resource allocation method in a wireless cellular network
  • A d2d communication resource allocation method in a wireless cellular network
  • A d2d communication resource allocation method in a wireless cellular network

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Embodiment Construction

[0064] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0065] In the embodiment of the present invention, using UE TX Indicates the sender UE of a D2D communication link, with UE RX Indicates the receiver UE. If UE RX and UE TX In different cells, in order to establish a D2D communication link between the two, the coordinated operation of the two eNBs is required, and may even involve cell handover of the UE. In the embodiment of the present invention, only UE is considered RX and UE TX All are in the cell covered by the same eNB. In order to measure the load of current resources, define UPR (user per RB) value, which is used to represent the average number of users carried by each RB; define DRU (D2D resource use) to represent the utilization rate of D2D resources, that is, the currently allocated The percentage of resources to the total D2D resources.

[0066] The present invention provides a D2D c...

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Abstract

The invention discloses a D2D communication resource allocation method in a wireless cellular network. In the present invention, the LTE system reserves a part of resources for D2D communication. For the resource allocation of D2D communication, different D2D communication links can use the same resource, so as to improve the spectrum efficiency and further improve the throughput of the cell. At the same time, the method for judging mode switching provided by the present invention can switch the mode of the UE under appropriate conditions, ensure normal communication, and improve spectrum efficiency as much as possible.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to the design of a D2D communication resource allocation method in a wireless cellular network. Background technique [0002] With the emergence of the LTE (Long Term Evolution, Long Term Evolution) standard, the popularity of smart phones is gradually accelerating, and the number of LTE users worldwide is increasing year by year. These devices provide users with a desktop-like experience that was unimaginable just a few years ago. With the popularization of LTE technology, many new services, such as services based on geographic location, also follow. On the other hand, with the rise of the concept of the Internet of Things, direct communication requirements such as D2D (Device-to-Device) have gradually been raised. [0003] The LTE is a long-term evolution of the UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications Syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/04H04W24/10H04W28/26H04W36/30H04W72/08H04W72/54
CPCH04W16/04H04W24/10H04W28/26H04W36/30H04W72/542
Inventor 冷甦鹏武润鹏张彦吴凡张科
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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