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Resource allocation method based on D2D clustering

A resource allocation and clustering technology, which is applied in the field of resource allocation based on D2D clustering, can solve the problems that cannot be completely eliminated, the adverse effects of cellular communication, and the inability to improve resource utilization.

Active Publication Date: 2016-07-27
CHONGQING UNIV OF POSTS & TELECOMM
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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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  • Resource allocation method based on D2D clustering
  • Resource allocation method based on D2D clustering
  • 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 comprises the steps of 1, UE measurement and reporting, 2, building of interference figure and clustering based on figure coloring, 3, resource allocation and 4, relay transmit scheme.Relay transmit is carried out on D2D pairs through the resource cost spent for transmit.According to the resource allocation method, on the premise of ensuring Qos of each honeycomb user D2D pair, D2D pair interference is considered, clustering is performed based on figure coloring, multiple D2D links are allowed to reuse the RB of the same honeycomb user, D2D is used as a relay node for transmitting data, and therefore user satisfaction and honeycomb system spectrum efficiency are improved.

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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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
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