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Power distribution method based on maximizing energy collection efficiency in heterogeneous cellular networks

A heterogeneous small cell, energy harvesting technology, applied in the direction of energy reduction, advanced technology, climate sustainability, etc., can solve the problems of single energy harvesting power supply, no additional power supply and so on

Active Publication Date: 2019-01-08
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] In general, most studies assume that all devices in the SWIPT system are powered by a single energy harvester, and there is no additional power supply

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  • Power distribution method based on maximizing energy collection efficiency in heterogeneous cellular networks
  • Power distribution method based on maximizing energy collection efficiency in heterogeneous cellular networks
  • Power distribution method based on maximizing energy collection efficiency in heterogeneous cellular networks

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Embodiment Construction

[0079] The technical solutions in the embodiments of the present invention will be described clearly and in detail below with reference to the drawings in the embodiments of the present invention. The described embodiments are only some of the embodiments of the invention.

[0080] The technical scheme that the present invention solves the problems of the technologies described above is:

[0081] refer to figure 1 , to study the energy harvesting problem of the heterogeneous small cell network with simultaneous transmission of wireless information and energy, and maximize the energy harvesting efficiency of the system. Under the constraints of guaranteeing user communication quality, user energy collection and base station transmission power, in order to maximize the system energy collection efficiency, by jointly optimizing the beamforming matrix and power splitting coefficient (or time switching factor) of the base station, a SWIPT-based - HCN's power allocation algorithm....

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Abstract

The invention relates to an energy acquisition method for simultaneous transmission of wireless information and energy in a heterogeneous small cellular network, belonging to the network power controlfield. The invention provides a power allocation algorithm based on SWIPT-HCN, which optimizes the beamforming matrix and power splitting coefficient (or time switching factor) of a base station jointly, thereby maximizing the system energy collection efficiency. Then the semi-definite relaxation SDR is used to convert the original problem into a convex optimization problem, which is solved by continuous convex approximation SCA algorithm. The results obtained by the invention show that under different signal-to-noise ratio SINR, energy acquisition threshold and macro-user MU interference threshold, the proposed method significantly improves the system energy acquisition efficiency.

Description

technical field [0001] The invention belongs to the energy collection efficiency problem of a heterogeneous small cell network (SWIPT-HCN) for wireless information and energy coordinated transmission, and proposes a resource allocation method for maximizing energy collection efficiency. Background technique [0002] With the rapid development of mobile communication, the deployment density of network nodes is increasing day by day, and the energy consumption is increasing dramatically. Therefore, how to effectively reduce the energy consumption of the communication network is one of the important tasks for the sustainable development of the communication network. At present, the above problems are mainly solved from two aspects. One is to improve the energy efficiency and resource utilization of the network through reasonable resource allocation and optimization methods; the other is to use energy harvesting (Energy Harvesting, EH) technology to collect energy from the surro...

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Application Information

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IPC IPC(8): H04W72/04H02J50/20
CPCH02J50/20H04W72/0473Y02D30/70
Inventor 樊自甫张鸿佳王正强李悦宁万晓榆
Owner CHONGQING UNIV OF POSTS & TELECOMM
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