Power Control Method Based on swipt in Heterogeneous Cellular Networks

A cellular network and power control technology, applied in power management, wireless communication, electrical components, etc., can solve problems such as interference from small cell base stations, and achieve the effect of simplifying mathematical processing

Active Publication Date: 2021-02-09
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, in the research scenario, the author did not consider the interference of small cell base stations to macro users, which has a certain gap with the actual cellular network, because operators are more concerned about the communication quality of macro users

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  • Power Control Method Based on swipt in Heterogeneous Cellular Networks
  • Power Control Method Based on swipt in Heterogeneous Cellular Networks
  • Power Control Method Based on swipt in Heterogeneous Cellular Networks

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Embodiment Construction

[0040] 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.

[0041] The technical scheme that the present invention solves the problems of the technologies described above is:

[0042] This embodiment is a power control method based on SWIPT in a heterogeneous cellular network, the number of small cell users K=4, and the number of small cell base station antennas N t =K=4, the total transmission power of the small cell base station P total = 30dBm. Assuming that the signal attenuation per 5m from the small cell base station to the small cell user is 40dBm, the downlink bandwidth of the small cell system and all users have the same set of parameters, namely gamma k = γ, e k = e, ζ k =ζ=0.65. figure 2 Reflects the convergence performance of the proposed a...

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Abstract

The present invention claims to protect a power control method based on SWIPT in a heterogeneous cellular network, including: initializing system parameters; establishing a maximum energy efficiency optimization model according to the system scenario, and converting the model into a power control problem of a base station; The original problem is transformed into a joint optimization problem between base station transmit power and user end power split coefficient; k In the case of , the subgradient method based on Lagrangian multipliers is used to solve the problem, and the optimal power control scheme of the base station is obtained according to the KKT condition. Finally, the optimal energy efficiency value of the system is obtained according to the obtained power control scheme combined with the dichotomy method. The optimal power control method can not only improve the energy efficiency of cellular systems, but also effectively solve the problem of energy constraints of mobile devices, which has certain guiding significance in practice.

Description

technical field [0001] The invention belongs to the technical field of power control in heterogeneous cellular networks, in particular to a power control method based on SWIPT in heterogeneous cellular networks. . Background technique [0002] With the rapid development of mobile communication and the widespread popularity of smart phones, the energy consumption of cellular networks is increasing day by day; on the other hand, batteries with limited capacity are still used to power network equipment, but there are some special environments in actual communication scenarios, such Sensors placed in the enemy's battlefield, medical chips implanted in the human body, etc., we cannot often replace the batteries for these devices, or charge them through wired methods, which greatly reduces the service life of the devices. At present, there are two main methods to solve the above problems. First, improve system energy efficiency through resource allocation and optimization algorit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/24H04W52/26
CPCH04W52/146H04W52/241H04W52/244H04W52/265
Inventor 樊自甫李悦宁王正强万晓榆张鸿佳
Owner CHONGQING UNIV OF POSTS & TELECOMM
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