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A system and implementation method for constructing a wireless network service distribution map

A service distribution and wireless network technology, applied in the wireless network field, can solve the problems of coarse service model granularity, uneven base station deployment density, uneven spatial service density distribution, etc., to achieve the effect of reducing the amount of calculation and flexible service scheduling

Active Publication Date: 2019-12-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems that the business in the future wireless network has dynamic changes in time and is stable in a short period of time, the deployment density of base stations is uneven, and the distribution of space service density is uneven, while the traditional wireless network business model has coarse granularity, the present invention provides a Method and system for constructing wireless network service distribution map

Method used

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  • A system and implementation method for constructing a wireless network service distribution map
  • A system and implementation method for constructing a wireless network service distribution map
  • A system and implementation method for constructing a wireless network service distribution map

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Embodiment 1

[0044] Embodiment 1 is realized by Kriging interpolation, assuming that the base station b is obtained through the third step 1 ,b 2 ,...,b m The real-time traffic density of the grid where it is located is z(b 1 ), z(b 2 ),...z(b m ), and satisfy the second-order stationary characteristics and eigenassumptions, then at the estimated point b 0 The estimated traffic density at is:

[0045]

[0046] Among them, λ i is the weight coefficient, indicating the contribution of the i-th base station to the estimated point. According to the requirements of unbiasedness and optimal variance, the weight coefficient λ can be determined by the covariance matrix C of the sample i :

[0047] Unbiasedness: E[z * (b 0 )-z(b 0 )]=0 simplification can get:

[0048]

[0049] Optimal (minimum) variance: minσ 2 =E[(z * (b 0 )-z(b 0 )) 2 ], use the Lagrange multiplier method to solve the extreme value under the unbiased condition, namely:

[0050]

[0051] Among them, μ is ...

Embodiment 2

[0055] The second embodiment is realized through natural neighbor interpolation, assuming that the base station p 1 ,...,p 4 The real-time traffic density of the grid where it is located is z(p 1 ),…,z(p 4 ),like Figure 5 As shown in (a), a Thiessen polygon is constructed for the estimated point p, and p 1 ,...,p 4 The constructed Thiessen polygon overlaps to form a second-order Thiessen polygon, and the base station p corresponding to the Thiessen polygon overlapping with the Thiessen polygon of point p 1 ,...,p 4 Called the natural neighbor of point p, the estimated traffic density at point p is:

[0056]

[0057] Among them, m is the number of natural neighbors of point p, in this example m=4, λ i is the weight coefficient, indicating the contribution of the i-th base station to the estimated point.

[0058] Weight factor λ i It is determined by the mutual positional relationship between point p and each natural neighbor, specifically, it is measured by the ove...

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Abstract

The invention discloses a system and a realization method of constructing a wireless network service distribution map, and relates to the technology field of a wireless network. The system and the realization method are based on features of time and space change of the service of a cellular wireless network, via service traffic data and location data of base stations regularly counted by a plurality of base stations distributed in space, a time-sharing service density map built in rasterization is calculated, and through estimation and smoothing of the data, calculation amount is reduced, and a dynamic service flow density map is presented in a visualized way. The system and the method can better reflect wireless network service demands of areas in the map, play an important role in further analyzing service demands and using features of service demands to perform flexible service scheduling, and can be widely applied in the process of wireless network planning, operation and maintenance, and optimization.

Description

technical field [0001] The present invention relates to wireless network technology, in particular to a system for constructing a wireless network service distribution map and an implementation method thereof. Background technique [0002] In wireless network planning, the accurate network capacity and coverage must be obtained according to the service distribution, which requires a more accurate service distribution prediction method to predict the service distribution consistent with the actual network operation status. Service distribution prediction plays an important role in the initial planning and later optimization of network construction. In principle, in order to avoid frequent switching and make full use of system resources, the site of the base station should be selected in an area with relatively concentrated traffic. Obviously, the actual situation of business distribution will directly affect the determination of the location of the base station. Accurate busi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W16/22H04W16/30H04W24/02G06F16/29H04W4/029
CPCG06F16/29H04W4/025H04W16/18H04W16/22H04W16/30H04W24/02
Inventor 许方敏仇超赵成林李斌
Owner BEIJING UNIV OF POSTS & TELECOMM