Optimization method for system efficiency maximization in large-scale heterogeneous cellular network
A technology for cellular networks, optimization methods, used in power management, electrical components, sustainable buildings, etc.
Active Publication Date: 2014-02-12
ZHEJIANG UNIV OF TECH
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[0004] In order to overcome the deficiency that the existing cellular network cannot use base station allocation and user transmission power control to maximize system benefits, the present invention provides a method for maximizing the minimum total transmission power through base station allocation and user transmission power control in a heterogeneous cellular network. Optimizing Method for System Benefit
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[0059] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0060] refer to Figure 1 ~ Figure 3 , a system benefit maximization method realized by base station allocation and power control, the implementation of this method can obtain the maximum system benefit with the minimum total transmission power cost. The present invention is based on a large heterogeneous cellular network system (such as figure 1 shown). In a heterogeneous cellular network system, network operators provide users with wireless data services through base stations with unequal power. The invention proposes a wireless network optimization method that minimizes total transmission power consumption and maximizes system benefits for large-scale heterogeneous cellular networks. The steps are as follows:
[0061] (1) In a heterogeneous cellular network, base station allocation and user transmission power control are used to maximize system benefits...
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The invention discloses an optimization method for system efficiency maximization in a large-scale heterogeneous cellular network. The method comprises the steps that (1), system efficiency maximization is achieved with minimum total transmission power through base station allocation and user transmission power control in the heterogeneous cellular network, wherein the optimization problem is described to be multi-objective optimization; (2) the problem P1 is translated into the combined optimization problem of base station allocation and user transmission power control; (3) according to the power control system efficiency maximization algorithm based on alliance formation game and simulated annealing, namely, the POSEM algorithm, the problem P2 obtains the optimal solution (X(k-1), P(k-1)). According to the optimization method for system efficiency maximization, system efficiency maximization is achieved with minimum total transmission power through base station allocation and user transmission power control in the heterogeneous cellular network.
Description
technical field [0001] The invention relates to the technical field of large-scale heterogeneous cellular networks, in particular to an optimization method for maximizing system benefits in large-scale heterogeneous cellular networks. Background technique [0002] With the exponential growth of wireless broadband services, the reasonable allocation of limited network resources (such as bandwidth, transmission power) in traditional macrocellular networks is facing great challenges. In order to significantly improve the coverage and user capacity of cellular networks, network operators and researchers have proposed the concept of heterogeneous cellular networks, that is, to arrange some low-power base stations in the lower layer of macro cells. For heterogeneous cellular networks, network operators still hope to obtain maximum profit by rationally allocating limited network resources, achieve maximum resource utilization, and serve as many users as possible. However, due to t...
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Login to View More IPC IPC(8): H04W52/34
CPCY02B60/50
Inventor 钱丽萍吴远钱程陈庆章
Owner ZHEJIANG UNIV OF TECH