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D2D resource sharing method in heterogeneous cellular network

A technology of cellular network and resource sharing, applied in the field of D2D resource sharing based on Stackelberg game, can solve the problems of complexity and affect system performance, and achieve the effect of reducing power

Inactive Publication Date: 2018-01-09
JILIN UNIV
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Problems solved by technology

The research scenarios of D2D technology in traditional heterogeneous cellular networks are generally a two-layer network of macro cells and D2D. It is only necessary to coordinate the transmission power of D2D transmitters and macro base stations to improve spectral efficiency. However, in future 5G networks, It is very likely that there will be a three-layer heterogeneous cellular network, that is, macro cells, femtocells, and D2D users co-exist. In this scenario, various interferences caused by resource reuse will seriously affect the performance of the system, and the situation is more complicated

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Embodiment 1

[0026] This embodiment is a D2D resource sharing method based on the Stackelberg game in a heterogeneous cellular network. The system noise is zero-mean additive white Gaussian noise with a spectral density of -174dBm / Hz. The channel model adopts a simplified path loss model. According to the 3GPP standard, The path loss formula for macro users and femtocell users is L d (dB)=128.1+37.6lg(d(km)), the path loss formula of the D2D link is L d (dB)=148+40lg(d(km)).

[0027] The D2D resource sharing method based on the Stackelberg game in the heterogeneous cellular network provided in this embodiment includes three steps: establishing a Stackelberg game model, analyzing the game process of the lower-layer users, and analyzing the game process of the upper-layer users. The specific steps are as follows:

[0028] The first step is to establish the Stackelberg game model

[0029] Set macrocell users as upper-tier users, and femtocell users and D2D users as lower-tier users. During ...

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Abstract

A D2D resource sharing method in a heterogeneous cellular network of the present invention belongs to the field of wireless communication technology, and includes three steps of establishing a Stackelberg game model, analyzing the game process of lower-layer users, and analyzing the game process of upper-layer users. The present invention optimizes the transmission power of femtocell users and D2D users, enables users to participate in spectrum sharing more actively, improves the throughput of femtocell users, D2D users and the entire system, and better meets the requirements of green communication.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a D2D resource sharing method based on Stackelberg game in a heterogeneous cellular network. Background technique [0002] With the advent of the new generation of Internet era, the number of terminal devices and applications has exploded, and the available spectrum resources are becoming less and less, resulting in the continuous increase of users' demand for wireless communication bandwidth and the limitation of cellular networks. Conflicts between spectrum resource allocations. How to improve the utilization of limited spectrum is an important direction of cellular network evolution. Among them, D2D (Device-to-Device, that is, "terminal direct connection") technology improves the utilization of spectrum resources by multiplexing cellular network spectrum resources. to research hotspots. [0003] D2D technology refers to the technology of direct communication b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W52/30H04W52/38H04W84/04
Inventor 于银辉崔馨鹤姚思宇孔繁月金小迪
Owner JILIN UNIV
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