Transmission model-based network coverage correcting method and system

A propagation model and network coverage technology, which is applied in network planning, electrical components, wireless communication, etc., can solve problems such as inaccurateness, customer complaints about lagging network problems, and failure to consider regional differences, etc., to avoid time-consuming and labor-intensive effects

Active Publication Date: 2011-05-18
CHINA MOBILE GRP HEILONGJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Defects of large-scale and detailed road testing: the test cycle is long and generally only guarantees the coverage test in the urban area, and the automatic road test system (testing equipment loaded on the taxi) or the area that cannot be reached by the daily test of the network maintenance personnel The coverage cannot be obtained by means of testing; and the road test data can only represent the downlink coverage of the street surface, and the test data representing the actual coverage cannot be obtained for the blocked by buildings, indoor coverage and untested areas; in addition, through The "coverage rate" obtained by the drive test data is a global concept, and it is impossible to fully grasp the specific area
[0005] 2. Defects in understanding network problems through customer 10086 complaints: First, customer complaints lag behind network problems, and network complaints have limited sampling of network problems; second, because the current mobile network is covered by cellular, the granularity of network adjustment is generally at the cell level , due to the unknown coverage of the surrounding area, when dealing with network complaints, it is possible to solve the complaints of one point and bring the hidden dangers of complaints in other unknown areas
[0006] 3. The network coverage obtained by using the propagation model is based on the basic physical information data of the base station and antenna attribute data extracted from the Operation Maintenance Center (OMC). Considering the attenuation of wireless signal propagation by terrain and landform, the traditional The propagation model obtains the coverage map of network signal strength, without considering geographical differences and the coverage of buildings with repeater indoor distribution systems installed on the network, which is not accurate enough

Method used

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  • Transmission model-based network coverage correcting method and system
  • Transmission model-based network coverage correcting method and system

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Embodiment 1

[0027] figure 1 A flowchart of Embodiment 1 of a method for network coverage correction based on a propagation model according to the present invention, such as figure 1 As shown, this embodiment includes:

[0028] Step S102: Extract basic information data of base stations, repeater indoor distribution systems and antennas of the current network from the Operation Maintenace Center (OMC), such as extracting the base station and antenna parameters of the current network in a cell-level manner from the OMC And the data of the indoor distribution system of the repeater;

[0029] Step S104: Divide the data collected in step S102 according to area categories, and use different propagation models for different categories to perform coverage prediction;

[0030] For example, the coverage area is divided into dense urban areas and suburbs, and the locations of base stations and antennas are divided into dense urban areas or suburbs, and the "Urban" propagation model and the "9999" propagatio...

Embodiment 2

[0037] figure 2 It is a flowchart of an embodiment of the network coverage correction method based on the propagation model of the present invention applied to GSM and TD network coverage presentation. Such as figure 2 Shown, including:

[0038] Step 201: Collect and read the basic information of the indoor distribution system of base stations, antennas and repeaters in GSM and TD mobile communication systems;

[0039] Generally, these basic information can be statically entered into the OMC in advance. The basic information of the GSM network base station can include the latitude and longitude of the base station, cell name, antenna type, antenna height, antenna direction angle, antenna downtilt, antenna gain, and cell broadcast channel frequency. Broadcast Control Channel (BCCH for short), Base Station Identity Code (BSIC for short), etc.; the collected TD network base station basic information includes the base station's latitude and longitude, cell name, antenna type, antenna...

Embodiment 3

[0063] image 3 for figure 1 Step S102 is specifically applied to an embodiment of the process of collecting drive test data of GSM and TD networks, such as image 3 As shown, this embodiment includes:

[0064] Before collecting drive test data, according to steps S301-302, set the value range of the data and the format for storage after collection in advance, and then collect according to the sequence of steps S303-304. The specific process is as follows:

[0065] Step S301: preset the value threshold range, and set the value threshold to filter out some invalid data;

[0066] Considering that the data that is too close to the base station is generally a direct signal, which cannot reflect the influence of the surrounding topography on wireless propagation, it needs to be filtered out; for data that is too far away from the base station and the strength is too weak, the signal has to be submerged in noise and also be filtered out . Therefore, in this embodiment, the value range of ...

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Abstract

The invention discloses a transmission model-based network coverage correcting method and a transmission model-based network coverage correcting system. The method comprises: extracting basic information data of indoor distribution systems of a base station and a repeater; partitioning the acquired various basic information data, and selecting corresponding transmission models for coverage prediction; and extracting relative data from a road test system to correct the selected transmission models. In the embodiments of the invention, the basic information of the base station as well as the basic data of the indoor distribution system are acquired, then the network coverage conditions of the indoor distribution system is subsequently supplemented by the signal strength corrected by the transmission model, the acquired data are partitioned, different transmission models are adopted for different data, and thus, the problem that the network coverage condition cannot be acquired accurately in the prior art can be solved.

Description

Technical field [0001] The present invention relates to wireless technology in the communication field, in particular to a method and system for network coverage correction based on a propagation model. Background technique [0002] The coverage of the wireless cellular network is affected by factors such as the location of the base station and the topography. With urban construction, mobile network expansion and rolling construction, the actual network coverage has been different from the theoretical coverage of network planning and design. At present, 3 methods are generally used for the current network coverage: 1. Through large-scale and meticulous drive test, analysis and test indicators to measure; 2. According to the network problem complained by customer 10086 (China Mobile customer service number), understand network coverage through on-site fixed-point testing Situation; 3. Use the propagation model to calculate the theoretical coverage simulation map. [0003] The exis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/00
Inventor 支敏慧李伟东包海涛姜红英刘彦李震宇
Owner CHINA MOBILE GRP HEILONGJIANG CO LTD
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