Intermediate frequency efficiency optimization method for energy harvesting D2D heterogeneous network

A heterogeneous network and energy acquisition technology, applied in the direction of reducing energy consumption, advanced technology, electrical components, etc., can solve problems such as reducing information transmission efficiency and resource utilization, lack of spectrum resources, and increasing network traffic

Active Publication Date: 2020-07-28
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In a traditional cellular network, users need to communicate through a base station (BS), and use uplink communication and downlink communication for information interaction, which will reduce information transmission effi...

Method used

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  • Intermediate frequency efficiency optimization method for energy harvesting D2D heterogeneous network
  • Intermediate frequency efficiency optimization method for energy harvesting D2D heterogeneous network
  • Intermediate frequency efficiency optimization method for energy harvesting D2D heterogeneous network

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Embodiment 1

[0167] The communication scenario in this embodiment is as follows figure 1 As shown, 5 CU users (|Υ|=5) and 5 D2D users (|Γ|=5) are randomly distributed in the area with the BS as the center and a radius of 500m, and the D2D users multiplex the CU user uplink resources for communication. The number of time slots transmitted by the system is 5 (|T|=5), and the time slot length is 10s, that is, τ t =10s, the energy acquisition rate is 5mJ / s, and the cellular user Qos constraint R c=12bit / s / Hz, the distance between the D2D sender and receiver is 10m, B=1.25MHz, N 0 =-174dBm / Hz,E 0 =300mJ,P T =100mw,P C =100mw, S1 establishes and constructs an energy harvesting D2D heterogeneous network scenario, and calculates channel gains between communication nodes.

[0168] S1-1 Establish a Cartesian coordinate system with BS as the origin (x is the abscissa and y is the ordinate).

[0169] 1) The coordinates of 5 CU users are

[0170] i i＝1 i＝2 i＝3 i＝4 i＝5 x -1...

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Abstract

The invention discloses an intermediate frequency efficiency optimization method for an energy acquisition D2D heterogeneous network. The method mainly comprises the following steps: 1, constructing amathematical model of energy acquisition D2D heterogeneous network optimization frequency efficiency; 2, simplifying frequency efficiency optimization energy to obtain a mathematical model of the D2Dheterogeneous network; 3, converting a multi-objective optimization problem into a single-objective optimization problem; 4, solving a frequency efficiency optimization problem when alpha is greaterthan 0 based on a convex optimization theory; 5, solving a frequency efficiency optimization problem when alpha is equal to 0 based on a convex optimization theory; and 6, solving a frequency efficiency optimization problem based on a gradient descent method. On the premise of ensuring QoS of CU users, the optimization problems of channel allocation, transmission time allocation and power allocation in an energy acquisition D2D heterogeneous network are solved, and the spectral efficiency and the energy efficiency of the system can be maximized at the same time.

Description

technical field [0001] The invention belongs to the technical field of wireless networks, and relates to a resource allocation method for optimization of spectrum efficiency and energy efficiency α fairness in energy acquisition D2D heterogeneous networks, which involves cellular user QoS constraints and energy acquisition constraints, and solves channel allocation and power allocation in communication systems and energy harvesting time allocation joint optimization problem to maximize the spectral efficiency and energy efficiency of energy harvesting D2D heterogeneous networks. Background technique [0002] From the analog communication system represented by the voice service to the 5th Generation (5G) mobile communication system that is about to be commercialized on a large scale and has a wide range of application scenarios, the cellular communication network is constantly improving and developing. In a traditional cellular network, users need to communicate through a bas...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/08
CPCH04W72/0446H04W72/0453H04W72/0473H04W72/543H04W72/542Y02D30/70
Inventor 邝祝芳张立邦谭林高坚
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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