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A Resource Allocation Method Based on D2D Clustering

A technology of resource allocation and clustering, applied in the field of resource allocation based on D2D clustering, can solve the problems that cannot be completely eliminated, cannot improve resource utilization, adverse effects of cellular communication, etc., so as to improve user satisfaction and increase D2D communication. The number of links and the effect of improving spectrum utilization

Active Publication Date: 2019-06-04
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Neither the cellular mode nor the dedicated mode will cause interference to the cellular system, but the purpose of improving resource utilization cannot be achieved
[0005] At present, the existing technical solutions have the following disadvantages: using the multiplexing mode, although the mutual interference can only be weakened through reasonable resource allocation, it cannot be completely eliminated, which will inevitably cause adverse effects on cellular communication

Method used

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  • A Resource Allocation Method Based on D2D Clustering
  • A Resource Allocation Method Based on D2D Clustering
  • A Resource Allocation Method Based on D2D Clustering

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Embodiment Construction

[0046] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] figure 2 It is a schematic diagram of the scene of the present invention. As shown in the figure, D2D user pairs (D2D-Tx and D2D-Rx) share cell resources with cellular users, and there is no need for the base station to forward data. Compared with downlink resources, uplink resources are not fully utilized , so the present invention considers the D2D pair to share the uplink resource of the cellular user. When the D2D-Tx (D2D transmitting end) will cause co-channel interference to the uplink receiving end (ie eNB) of the cellular user. At the same time, D2D-Rx (the receiving end of D2D) will also be interfered by cellular users who reuse the same spectrum resources as it.

[0048] In this embodiment, a single cell model is considered, where M pairs of D2D users, N cellular users are randomly distributed in the cell, the set of D2D...

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Abstract

The invention relates to a resource allocation method based on D2D clustering, and belongs to the technical field of mobile communication. The method mainly includes the following steps: (1) UE measurement reporting; (2) constructing an interference graph and performing clustering based on graph coloring; (3) resource allocation; (4) relay forwarding scheme, according to the resource cost consumed by forwarding to The D2D pair performs relay forwarding. The resource allocation method designed in the present invention, on the premise of ensuring the Qos of each cellular user D2D pair, considers D2D inter-pair interference, and performs clustering based on graph coloring, allowing multiple D2D links to reuse the RB of the same cellular user, Consider D2D as a relay node to forward data, which improves user satisfaction and spectrum utilization of cellular systems.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a resource allocation method based on D2D (Device-to-Device, terminal direct connection) clustering. Background technique [0002] With the advent of the Internet era, people began to pursue higher-speed mobile data services. The limited spectrum resources can no longer meet the growing business needs. The shortage of spectrum resources has become a severe challenge for mobile communications. A scientific and reasonable spectrum resource allocation plan Become the focus of next generation mobile communication research. One of the effective ways is to introduce D2D (Device-to-Device) technology into the cellular network, which is a new technology that allows end users to communicate directly by sharing cell spectrum resources under the control of the cellular system. It has the advantages of improving spectrum utilization, increasing communication capacity, and reducin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W72/12
CPCH04W24/10H04W72/535
Inventor 唐宏宋艳华万晋京彭帅
Owner CHONGQING UNIV OF POSTS & TELECOMM