A physical layer cell identification PCI optimization method in LTE network and system

A cell and service cell technology, applied in the direction of electrical components, wireless communication, etc., can solve problems such as unreasonable PCI planning, affecting wireless network performance, and small distance between stations

Active Publication Date: 2015-12-30
ULTRAPOWER SOFTWARE
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Problems solved by technology

[0002] Under the LTE (Long Term Evolution, long-term evolution) network, the density of base stations is higher than that of 2G and 3G networks, and the distance between stations is small; there are obvious problems such as cell coverage planning and unreasonable PCI planning, which lead to common-mode interference and other problems, which affect wireless network performance.

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  • A physical layer cell identification PCI optimization method in LTE network and system
  • A physical layer cell identification PCI optimization method in LTE network and system
  • A physical layer cell identification PCI optimization method in LTE network and system

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Embodiment Construction

[0118] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0119] see figure 1 , the embodiment of the present invention provides a method for PCI optimization in an LTE long-term evolution network, comprising the following steps:

[0120] S101: Randomly generate multiple candidate groups from the PCI allocation scheme.

[0121] Here, the candidate group may also be referred to as a candidate group population, which is used to perform genetic evolution operations on the candidate group population to obtain an optimal solution.

[0122] It should be noted that the LTE system defines 504 independent physical layer cell identifiers PCI, and these PCIs are divided into 168 groups, and each group corresponds to a different group number (The value range is 0~167). Each group contains 3 unique id...

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Abstract

The invention discloses a PCI optimization method in an LTE long-term evolution network and a system and relates to the mobile communication technology field. In an embodiment of the invention, a genetic algorithm is used to optimize a PCI distribution scheme; relative to a traditional optimization mode, in the genetic algorithm, evolution search calculating is performed from a string set; a coverage area is large, which is good for global prioritizing; PCI signal optimization analysis is accurate and reasonable; accurate and reasonable planning and adjustment can be performed on a wireless network signal and integral performance of an LTE wireless network is radically improved and increased. Crossover operation and mutation operation are firstly performed on an auxiliary synchronization signal SSS of each PCI group in a current candidate group. And then the crossover operation and the mutation operation are performed on a main synchronization signal PSS in each PCI group so that a condition that a same PSS is distributed in a same station during PCI distribution can be avoided and a severe same-mode interference condition of a model 3, a model 6 and the like can be greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and system for optimizing a physical layer cell identifier PCI in an LTE long-term evolution network. Background technique [0002] Under the LTE (Long Term Evolution, Long Term Evolution) network, the density of base stations is higher than that of 2G and 3G networks, and the distance between stations is smaller. There are obvious problems such as cell coverage planning and unreasonable PCI planning, which lead to common-mode interference and other problems, which affect wireless network performance. [0003] With the large-scale construction of the LTE network, the scientific and efficient analysis and optimization of the same-mode interference of the LTE wireless network is a key link to ensure the construction quality of the LTE wireless network. [0004] Therefore, it is necessary to explore new signal interference optimization analysis techniqu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02H04W24/08
Inventor 黄剑锋
Owner ULTRAPOWER SOFTWARE
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