A Method for Energy Efficiency Optimization of Two-layer Heterogeneous Cellular Networks
A cellular network, energy efficiency technology, applied in network planning, energy consumption reduction, advanced technology, etc., can solve problems such as energy efficiency reduction, and achieve the effect of energy efficiency improvement
Active Publication Date: 2022-06-03
NANJING INST OF TECH
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[0007] The technical problem to be solved by the present invention is to provide a solution that can maximize the energy efficiency of a two-layer heterogeneous cellular network for the above-mentioned deficiencies in the prior art, and maximize the two-layer heterogeneous cellular network by jointly optimizing the density and transmission power of the micro base station The energy efficiency of the cellular network avoids the problem of reduced energy efficiency caused by the dense deployment of micro base stations in the two-layer heterogeneous cellular network, and realizes green communication
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[0057] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0058] like figure 1 Shown is a two-layer heterogeneous cellular network architecture consisting of macro base stations and micro base stations. The solid line represents the received useful signal and the dashed line represents the received interference signal. Here, the base station adopts the base station access criterion based on the maximum signal-to-interference ratio, that is, as long as the received signal-to-interference ratio of the target user is greater than the signal-to-interference ratio threshold of the base station, the user will access the base station. In order to avoid the situation that a user accesses a multi-layer base station at the same time, it is assumed that the signal-to-interference ratio threshold γ of the base station k The values of (k=1,2) are all greater than 1.
[0059] A method for optimizing the energ...
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The invention discloses a method for optimizing the energy efficiency of a two-layer heterogeneous cellular network, comprising the following steps: constructing a two-layer heterogeneous cellular network model, calculating the signal-to-interference ratio of target users; Contribution ratio; calculate the average reachable rate of the target user under the coverage of the base station under the unit bandwidth; calculate the average reachable rate of the target user under the coverage of a certain layer of base station; analyze the total power consumption of the two-layer base station; construct two-layer Mathematical model of energy efficiency of heterogeneous cellular network; optimize the energy efficiency of two-layer heterogeneous cellular network based on the transmit power and density of micro base stations. The present invention maximizes the energy efficiency of the two-layer heterogeneous cellular network by jointly optimizing the density and transmission power of the micro base stations, avoids the problem of reduced energy efficiency caused by the dense deployment of micro base stations in the two-layer heterogeneous cellular network, and realizes green communication.
Description
technical field [0001] The invention belongs to the technical field of heterogeneous cellular networks and green communication, and in particular relates to a joint optimization method for transmitting power and density of a two-layer heterogeneous cellular network micro base station that can maximize energy efficiency. Background technique [0002] The rapid development of the mobile Internet and the Internet of Things and the continuous emergence of various new services have prompted the evolution of traditional cellular networks into heterogeneous cellular networks. Heterogeneous cellular networks incorporate different types of base stations, including macro-cell base stations, micro-cell base stations, and home base stations. The received signal strength and interference signal strength of cellular network users depend on the distance between the receiving end and each layer of base stations and the transmit power of each layer of base stations. Therefore, the spatial di...
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IPC IPC(8): H04W16/18H04W16/22H04W24/02
CPCH04W16/18H04W16/22H04W24/02Y02D30/70
Inventor 杨洁郭丽红潘子宇
Owner NANJING INST OF TECH