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A multi-sector joint control method for stereo coverage of public control signals in cellular mobile communication networks

A cellular mobile communication and public control signal technology, which is applied in the field of multi-sector joint control of the three-dimensional coverage of the public control signal of the cellular mobile communication network, can solve the problems of increased interference power, which may not be reasonable, and achieve the improvement of the overall SIR level, high The effect of mass stereo coverage

Active Publication Date: 2018-05-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The number and shape of the beams on the azimuth plane of the antenna pattern depend on the number of array elements in a row of the area array antenna (degrees of freedom on the azimuth plane), and the number and shape of the beams on the elevation plane of the antenna pattern depend on the The number of array elements in a column of the array antenna (degrees of freedom of the pitch plane) may not be able to meet the various coverage requirements in the actual environment
(3) Elimination of weak coverage in a cell / sector and suppression of interference to neighboring cells / sectors are often contradictory, because the increase in the received power of public control signals in this cell / sector will cause interference to neighboring cells / sectors Increased interference power
(4) The target coverage area of ​​the cell / sector is artificially delineated during the network planning or network optimization stage, which may not be reasonable

Method used

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  • A multi-sector joint control method for stereo coverage of public control signals in cellular mobile communication networks
  • A multi-sector joint control method for stereo coverage of public control signals in cellular mobile communication networks
  • A multi-sector joint control method for stereo coverage of public control signals in cellular mobile communication networks

Examples

Experimental program
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Effect test

Embodiment 1

[0119] Applying the above joint control method for stereo coverage to the stereo coverage control of a sector cluster, the implementation process is as follows image 3 shown, including the following steps:

[0120] S101, acquiring a test point set;

[0121] Carry out three-dimensional grid division for the target coverage area (including the ground coverage area and the above-ground coverage area) in a sector cluster, record the coordinates of the center point of each three-dimensional grid, and all the center points of the three-dimensional grid form a set of test points .

[0122] S102, acquiring a wireless signal propagation path loss set and constructing an antenna manifold vector set;

[0123] Obtain the wireless signal propagation path loss from the center point of each base station area array antenna in the cluster to each test point, or calculate it through the wireless signal propagation loss model, or obtain it through network actual measurement; form a wireless ...

Embodiment 2

[0135] According to the above-mentioned three-dimensional coverage control method of sector clusters, all sector clusters are applied one by one to realize the three-dimensional coverage control of the whole network. The implementation process is as follows Figure 4 shown, including the following steps:

[0136] S201, sector cluster division;

[0137] According to the principle that the sectors within a cluster are close to each other and the interference relationship between the sectors within the cluster is relatively independent (called the clustering principle), the entire network is divided into multiple sector clusters with independent interference. Each interference-independent sector cluster is composed of multiple (2 or more) sectors that are adjacent to each other; the interference intensity of the sectors in the cluster to the outside of the cluster is low and can be ignored; the interference from the outside of the cluster to any sector in the cluster is also sma...

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Abstract

The invention discloses a multi-sector combined control method for three-dimensional covering of cellular mobile communication network common control signals. The method includes the steps that a test point set in a target covering region in a sector cluster is obtained; a wireless signal transmission path loss set is obtained, and an antenna manifold vector set is constructed; combined control modeling for three-dimensional covering of the sector cluster is performed; an excitation weight value is solved; excitation current feed-in and covering control are implemented. Based on the disturbance independence of the sector cluster, beam forming freedom degrees of all sector base station area array antennas inside the cluster are sufficiently mined, and combined covering control over the target covering region inside the cluster is implemented. Through occlusion of wave beams of multiple sectors and self-adaptation division of sector boundaries, the covering quality of the target covering region is improved. The method can be used for three-dimensional covering control over the sector cluster or a whole network.

Description

technical field [0001] The invention belongs to the technical field of cellular mobile communication networks, and in particular relates to a multi-sector joint control method for three-dimensional coverage of public control signals of a cellular mobile communication network. Background technique [0002] High-quality coverage of public control signals in cellular mobile communication networks is a prerequisite for users to access anytime and anywhere (seamless access). Common control signals refer to downlink synchronization signals, common pilot signals, etc. of a cell. The public control signal is sent to all users within the cell range through the broadcast channel, and is essential for the user's mobile device to find the cell, establish synchronization with the base station, and perform channel estimation. High-quality coverage means that the received power of the common control signal (hereinafter referred to as the signal) at each point in the entire target coverage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W16/28H04W24/00
CPCH04W16/18H04W16/28H04W24/02
Inventor 黄爱苹王成张公正单杭冠
Owner ZHEJIANG UNIV