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Piconet network power distribution scheme based on water injection method

A technology of network and scheme, applied in the field of piconet network power allocation scheme based on water injection method, which can solve problems such as poor system performance

Active Publication Date: 2019-07-30
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, cross-layer interference (that is, interference from one layer to another) can lead to poor system performance unless well managed

Method used

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  • Piconet network power distribution scheme based on water injection method
  • Piconet network power distribution scheme based on water injection method
  • Piconet network power distribution scheme based on water injection method

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Embodiment Construction

[0084] The implementation of the present invention is divided into three steps, the first step is to build a model, and the second step is to implement the algorithm. Among them, we built a macro-femto cell heterogeneous network, in which a set of FBS ( ) are sparsely deployed in the coverage area of ​​MBS; while the implementation process of the algorithm consists of figure 2 , image 3 with Figure 4 Given, they obtained the optimal transmission power allocation strategy and the maximum-minimum fair transmission power allocation strategy based on the water-filling heuristic algorithm in the summary of the invention. figure 2 , 3 is the flow chart of the water injection algorithm, Figure 4 is a flowchart of finding the optimal transmission power allocation strategy at each FBS, Figure 5 is a flow chart of finding the maximum-minimum fair transmission power allocation strategy at each FBS.

[0085] 1) For the system model, we consider a macro-femtocell heterogeneous...

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Abstract

The invention designs a water injection transmission power allocation strategy with proportional fairness and maximum and minimum fairness in a femto cell network. The invention provides a heuristic floating ceiling water injection algorithm, and aims to determine the transmission power allocation for each femto cell user (FU), so that the allocation not only can realize the optimal utility proportion fairness, but also can realize the maximum-minimum fairness while meeting the interference temperature constraint at a macro cell base station (MBS). Due to the fact that strict interference constraints are considered, all transmission power distribution problems considered in the method are achieved in a centralized mode. More specifically, we assume that a control point has the global knowledge of all channel gains in a macro femto heterogeneous network, and then an optimal transmission power allocation is derived by solving a convex optimization problem. After the optimal power distribution at any FU is solved by using a water injection algorithm, the optimal power batching strategy and the maximum-minimum power distribution strategy at each FU are iteratively solved by using a heuristic algorithm.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a heuristic floating-ceiling water injection algorithm, which determines transmission power allocation for each femtocell user (FU), so that the power allocation meets the interference temperature at the macrocell base station (MBS) At the same time, the constraints can not only achieve the best utility ratio fairness, but also achieve the maximum-minimum fairness. The former effectively improves the joint utility and average SINR, and the latter protects the poorer FU of the channel, thereby increasing the fairness index. Background technique [0002] With the continuous development of personal mobile device functions and wireless technology, the traffic of mobile network (3G / 4G) has increased significantly, and the gap between existing network capacity and user traffic demand is getting bigger and bigger. Mobile network operators are trying to deal with heteroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W72/04
CPCH04W52/244H04W72/0473H04B17/391
Inventor 谭露周振宇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)