Heterogeneous cellular network D2D communication resource allocation method and system

A communication resource allocation and cellular network technology, which is applied in the field of heterogeneous cellular network D2D communication resource allocation, can solve problems such as high overhead and difficulty in achieving network optimization, so as to maximize user utility, reduce communication overhead, and efficiently and accurately communicate resources The effect of distribution

Pending Publication Date: 2020-02-07
SHANDONG NORMAL UNIV
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Problems solved by technology

[0005] The inventors of the present disclosure found that (1) most of the existing D2D communication resource allocation in the heterogeneous cellular network that introduces the millimeter wave frequency band uses heuristic algorithms, game theory and other optimization algorithms to maximize the throughput of the system. The method often obtains a suboptimal solution, and it is difficult to achieve the optimal network; (2) The existing centralized resource allocation method needs to collect accurate instantaneous global channel state information at the base station for centralized resource allocation, which requires a large overhead

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  • Heterogeneous cellular network D2D communication resource allocation method and system
  • Heterogeneous cellular network D2D communication resource allocation method and system
  • Heterogeneous cellular network D2D communication resource allocation method and system

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Embodiment 1

[0053] Such as Figure 1-4 As shown, Embodiment 1 of the present disclosure provides a method for allocating D2D communication resources in a heterogeneous cellular network, which mainly includes the following process:

[0054] Process 1: Introducing mmWave frequency bands in heterogeneous cellular networks.

[0055] A heterogeneous cellular network includes a base station (BS), K cellular frequency bands, K cellular users, and D D2D users. The set of cellular users can be expressed as C={c 1 , c 2 ,...,c K}, the set of D2D users can be expressed as D={d 1 , d 2 ,...,d D}; For the part of the millimeter wave frequency band, it is assumed that there are M mm-wave frequency bands expressed as M={m 1 , m 2 ,...,m M}.

[0056] There are two operation modes for each D2D user in the network: cellular communication mode and millimeter wave communication mode. D2D users can only choose one channel in one mode for communication.

[0057] If the D2D user chooses to communicate...

Embodiment 2

[0132] Embodiment 2 of the present disclosure provides a heterogeneous cellular network D2D communication resource allocation system, including:

[0133] The cellular network building module is configured to: introduce a millimeter wave frequency band into the constructed heterogeneous cellular network for D2D user communication, and construct a cellular communication mode and a millimeter wave communication mode;

[0134] The data processing module is configured to: calculate the interference power, signal-to-noise ratio, and transmission rate received by the cellular user and the D2D user in different communication modes, and establish a utility function of the D2D user according to the interference power, signal-to-noise ratio, and transmission rate;

[0135] The resource allocation module is configured to: in the case of meeting the service quality requirements of cellular users and D2D users, use the constructed deep reinforcement learning model, according to the current s...

Embodiment 3

[0137] Embodiment 3 of the present disclosure provides a medium on which a program is stored, and when the program is executed by a processor, the steps in the method for allocating D2D communication resources in a heterogeneous cellular network as described in Embodiment 1 of the present disclosure are implemented.

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Abstract

The invention provides a heterogeneous cellular network D2D communication resource allocation method and system. The heterogeneous cellular network D2D communication resource allocation method comprises the steps: introducing a millimeter wave frequency band into a constructed heterogeneous cellular network for the communication of a D2D user, and constructing a cellular communication mode and a millimeter wave communication mode; calculating interference power, a signal-to-noise ratio and a transmission rate received by the cellular user and the D2D user in different communication modes, andestablishing a utility function of the D2D user according to the interference power, the signal-to-noise ratio and the transmission rate; and under the condition that the service quality requirementsof the cellular user and the D2D user are met, selecting a communication mode and a channel of the D2D user by utilizing the constructed deep reinforcement learning model and taking the utility maximization of the D2D user as a target according to the current state of the D2D user. The heterogeneous cellular network D2D communication resource allocation method more intelligently solves the resource allocation problem of D2D user communication, effectively reduces the network communication overhead, maximizes the user utility, and improves the overall performance of the network.

Description

technical field [0001] The present disclosure relates to the technical field of wireless communication, and in particular to a method and system for allocating D2D communication resources in a heterogeneous cellular network. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the development of the Internet era, the number of mobile devices and applications continues to increase. The existing cellular network has problems such as shortage of spectrum resources and overload, which cannot meet the demand for wireless network services and the increasing rate requirements. Therefore, the current cellular communication system needs to evolve to the next generation (5G) wireless communication system to provide higher system capacity and user data rate. Introducing D2D communication technology into cellular networks has attracted extensive at...

Claims

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Application Information

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IPC IPC(8): H04W72/08H04W76/14
CPCH04W76/14H04W72/543H04W72/541H04W72/542Y02D30/70
Inventor 田杰支媛边际乔静萍
Owner SHANDONG NORMAL UNIV
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