WO2006105716A1 - Procede de mise en oeuvre pour l’organisation de reseaux de systemes de communication sans fil - Google Patents

Procede de mise en oeuvre pour l’organisation de reseaux de systemes de communication sans fil Download PDF

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Publication number
WO2006105716A1
WO2006105716A1 PCT/CN2006/000553 CN2006000553W WO2006105716A1 WO 2006105716 A1 WO2006105716 A1 WO 2006105716A1 CN 2006000553 W CN2006000553 W CN 2006000553W WO 2006105716 A1 WO2006105716 A1 WO 2006105716A1
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Prior art keywords
network
communication system
wireless communication
path loss
planning
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PCT/CN2006/000553
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English (en)
Chinese (zh)
Inventor
Peng Li
Rongqiang Li
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Huawei Technologies Co., Ltd.
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Publication of WO2006105716A1 publication Critical patent/WO2006105716A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools

Definitions

  • the present invention relates to the field of wireless network communication technologies, and in particular, to a method for implementing network planning of a wireless communication system.
  • 3G (3 rd Generation) network planning and optimization is much more complicated than 2G ( 2nd Generation) GSM (Global System for Mobile Communications) network, looking for the large-scale construction of the upcoming 3G network, look for one
  • 2G 2nd Generation
  • GSM Global System for Mobile Communications
  • the more common method is to use 3G network planning simulation tools for network planning, specifically focusing on simulation based on certain propagation models, such as Forsk's Atoll network planning software, AirCom's Enterprise network.
  • Planning software both software provides an interface to the propagation model.
  • the 3G planning network information can calculate the cell pilot channel reception signal Ec (chip signal power) and Eclo (signal-to-interference ratio) of the 3G network planning area, and then according to the coverage threshold requirement of the target service, Perform coverage prediction of the target area service of the planning area, and provide a final 3G network planning solution, where the 3G planning information includes: location information of the station, antenna information, feeder information, cell information, and sector information. , device and business information, load size information, and more.
  • the corresponding propagation models need to be selected.
  • Common propagation models include standard macro-cellular models and ray-tracing propagation models.
  • the accuracy of the simulation network planning method depends largely on the accuracy of the propagation model.
  • the standard macrocell model is based on the cost-hata propagation model, although it can pass CW
  • the ray tracing propagation model can better simulate the urban propagation environment. Compared with the standard macrocell model, the calculation accuracy of the propagation path loss is much higher, but the vector information of the digital map is relatively high. Therefore, the ray tracing model needs to effectively use the terrain information, including: parameter information such as feature type, feature height, and building height. In this way, in order to improve the accuracy of the propagation model, it is necessary to pass the CW test and use the test results to correct the relevant parameters of the ray tracing model, which makes the cost and workload of the network planning relatively high, greatly increasing the network planning. cost. Moreover, although the modified ray tracing model can improve the accuracy of planning simulation, due to the classification of features, the differences in propagation characteristics of different cells are blurred, and the accuracy of planning and simulation of ray tracing models is also limited.
  • the present invention provides a method for implementing network planning of a wireless communication system, and performs planning of a new wireless communication system network based on the existing wireless communication system network;
  • the step A includes obtaining road test data information and obtaining road test auxiliary information, where the road test auxiliary information includes an existing wireless communication system network and a wireless communication system network that needs to be planned from the top of the network to the antenna. System configuration information.
  • the network parameter information includes:
  • the chip signal power and signal to interference ratio of the received signal includes:
  • step B described includes:
  • the received signal level value, and the expected received signal level in the 3G network are adjusted for 3G network planning.
  • the step B1 described includes:
  • the relationship between the received signal level value of the sampling test point and the path loss value ⁇ ⁇ between the cell antenna and the sampling test point is:
  • P BCC i is the transmit power of the base station of the 2G network
  • ⁇ 3 2 is the 2G network antenna gain
  • the step B2 described includes:
  • the path loss value in the 2G network is corrected based on the working frequency band and the working frequency band of the 3G network, and the path loss between the corresponding cell antenna in the 3G network to the sampling test point is obtained.
  • the step B2 specifically includes: The network propagation model based on the 2G network and the 3G network respectively calculates the theoretical path loss values in the 2G network and the 3G network;
  • a path loss between the corresponding cell antenna in the 3G network to the sampling test point is calculated based on the path loss value calculated by the actual measurement in the 2G network and the theoretical difference.
  • the step B2 further includes:
  • the path loss between the cell antenna in the modified 3G network and the sampling test point is further corrected according to the region where the 3G network is located.
  • the step B3 described includes:
  • the value of the received signal level of the sampling test point is determined according to the path loss value ⁇ ⁇ between the cell antenna and the sampling test point:
  • . y is the transmit power of the pilot channel of the top station cell of the 3G network base station
  • L Mi - 3G - i is the antenna feed loss of the 3G network transmitter
  • the step B4 described includes:
  • the calculated 3G network Determining whether the received signal level value of the calculated 3G network meets the expected received signal level value in the 3G network, and if so, there is no need to adjust the already arranged base station and sector; otherwise, the calculated 3G network is obtained according to the calculation. The magnitude of the received signal level value is increased or decreased for the already placed base stations and sectors.
  • the method for implementing the network planning of the wireless communication system further includes:
  • the step C specifically includes: Calculating a signal power value of the serving cell received at the sampling test point in the 3G network; calculating a sum of signal power values of all neighboring cells of the serving cell received by the sampling test point in the 3G network;
  • the signal-to-interference ratio of the sampling test point is calculated by using the signal power value of the serving cell, the sum of signal power values of all neighboring cells, and the background noise value.
  • the method for implementing the network planning of the wireless communication system further includes:
  • the overall 3G network performance obtained based on each sampling test point plan is obtained, and the base stations and sectors arranged in the entire 3G network obtained are adjusted according to the expected planning result for the entire 3G network.
  • the method for implementing the network planning of the wireless communication system further includes:
  • the already arranged base station and sector are adjusted according to the magnitude of the received signal level value.
  • the method for implementing the network planning of the wireless communication system further includes:
  • the step A includes: acquiring drive test data of a 3G network based on sampling test points;
  • the step B includes: calculating a received signal level value of the sampling test point in the 3G network based on the drive test data;
  • the already arranged base station and sector are adjusted according to the magnitude of the received signal level value.
  • the method of the present invention avoids The dependence on the network planning propagation model is based on the true path loss between the cell antenna and the road measurement point in the road test area, and the received signal Ec and the signal-to-interference ratio Eclo coverage prediction of the 3G network planning and optimization regional target service. Therefore, the present invention greatly improves the accuracy of network planning. Moreover, the method of the present invention is simple and easy to implement, and the operator is more acceptable to the accuracy of the plan.
  • the operator has a 2G network
  • the method of the present invention is adopted, the 3G network and the 2G network co-site address and the common antenna construction principle are planned, and the existing station and antenna can be maximized. , effectively reduce the cost of operators' network construction.
  • FIG. 1 is a flow chart of a 3G network planning simulation in the prior art
  • FIG. 2 is a flowchart of a 3G network planning method provided by the present invention.
  • FIG. 3 is a flowchart of a 3G network optimization method provided by the present invention.
  • the core of the present invention is to obtain a 3G network cell pilot channel received signal level Ec pil by calculating a path loss between a drive test area and an associated cell antenna. t and letter to dry than EcIo pil . t , receiving the signal level Ec pil through the serving cell pilot channel. t and letter to dry than EcIo pil . t . Perform 3G network planning or optimization to provide a 3G network planning or optimization solution.
  • the premise of the implementation of the present invention is that when the 3G network is planned, the 2G network is used as a reference, that is, the planning of the base station and the antenna in the 3G network is basically the same as that of the 2G network, that is, the 3G network adopts a common base station address with the 2G network.
  • Step 21 Enter the drive test data information.
  • the road test data is a test signal of the 2G network;
  • the road test data includes: a level value of the received signal of the sampling test point (ie, the road test sample point), specifically including a level value of the received signal of the serving cell broadcast channel and a level value of the received signal of the adjacent cell broadcast channel;
  • Step 22 Enter the road test network auxiliary information
  • the road test network auxiliary information includes: 2G network and 3G network antenna feeder system configuration information from the top port to the antenna, such as: feeder type, feeder length, jumper, power divider, coupler, antenna type, etc.;
  • the antenna feed system gain difference between each antenna from the top of the antenna to the antenna is used, and is used for the pilot station cell pilot in the subsequent 3G network.
  • the channel receives the signal Ec pil .
  • the calculation of t is used, and calculates the signal Ec pil .
  • Step 23 Calculate the pilot channel receiving signal Ec pil of the driving area serving cell and the neighboring cell in the 3G network by using the road test data and the auxiliary information of the road test network. t ;
  • the received signal levels of the 2G network and the 3G network cell i pilot channel can be respectively obtained.
  • the receiving antenna gain of the 2G network test terminal is OdB, according to the 2G downlink budget.
  • the calculation of the level of the received signal level of the BCCH (Broadcast Control Channel) of the cell i obtained by the sampling point can be calculated as follows:
  • R i PBCCKU - L misc-2G,i + G a nt-2G,i ⁇ ⁇ 2G,i - where:
  • R i—— Road test sampling point 2G test terminal receives the test level (dBm) of the serving cell BCCH channel, which can be measured in the 2G network, which is the drive test data in the 2G network;
  • the transmit power (dBm) of the BCCH channel of the base station of the base station which is a known parameter in the 2G network;
  • L Mis . — ⁇ 1—2G transmitter antenna feed loss, including feeder loss, connector loss, jumper loss, etc. (dB), is a known parameter in 2G networks;
  • PL ⁇ i1 the path loss (dB) from the antenna of the 2G cell i to the test sample point, which requires the parameters obtained by the above parameter values and formulas;
  • the receiving antenna gain of the 3G network test terminal is also OdB. Therefore, according to the 3G downlink budget, the pilot channel receiving level Ee p"" of the cell i is obtained at the drive test sampling point. It can be described as follows:
  • the path loss (dB) between the antenna of the 3G cell i and the test sample point needs to be obtained according to the PL2G 'i value;
  • the path loss between the 2G network path measurement point and the cell i can be calculated 2 ( ⁇ ;
  • the path loss difference pl M caused by the frequency difference between the 2G and 3G networks can be corrected to obtain the corresponding path loss in the 3G network, namely:
  • the calculation of the PL Af can be performed according to the propagation model applicable to the corresponding working frequency band of the 2G network and the 3G network, to calculate the path loss value of the respective simulation environment-based theory, and further calculate the theoretical path loss difference value. , that is, p f ; Therefore, the received signal level EC P"" of the pilot channel of the cell of the 3G network radio system cell i at the waypoint can be obtained by using the 2G network drive test data, that is,
  • Step 24 The 3G network planning ⁇ ; ⁇ " ⁇ requirements, the test region for the cell guide path according to the received pilot channel signal Ee p.”. 'Signal correction;
  • plan optimization scheme is to add a cell to the base of the 2G network, it is necessary to add the simulated simulated cell signal to the cell signal table of the drive test data point in the drive test data; if the plan optimization scheme is in 2G If a cell is closed on the basis of the network, the cell signal involved in the path measurement point needs to be deleted from the cell signal list;
  • the cell pilot receiving signal change value ⁇ 1 is simulated by simulation. After that, the data related to the measurement point of the cell needs to be corrected to: + AECpaot; Therefore, in this step, Ec pil is calculated based on the 2G network drive test parameters according to the plan optimization plan. t adjust to obtain the Ec pilot value of the pilot signals of each cell in the 3G network after the planning adjustment.
  • Step 25 Calculate the pilot channel serving cell/neighbor cell pilot channel reception signal to interference ratio EcIo pil in the 3G network. t ; The calculation of the received channel-to-interference ratio of the pilot channel of the cell i is as follows:
  • test sample neighboring cell j receiving signal 1 j can be calculated by the total transmit power and path loss Path ) SS j of the neighboring cell of the serving cell:
  • Step 26 Ec pil based on the calculation.
  • t I EcIo pil The t value is used for target service coverage prediction, that is, the target service coverage prediction analysis is performed according to the threshold requirement of the target service;
  • the plan optimization scheme is adjusted, that is, the base station or the antenna is adjusted to make the Ec pil .
  • t I EcIo pil The t value meets the threshold of the predetermined target business.
  • Step 27 Perform corresponding network performance statistics on the entire 3G network obtained by the plan to analyze network performance such as optimal serving cell coverage, pilot pollution, and soft handover area of the network; Therefore, in the subsequent processing, when the network performance such as the serving cell coverage, the pilot pollution, and the soft handover area does not meet the predetermined requirements, the base station and the antenna in the planned 3G network can still be adjusted to obtain Best network performance.
  • Step 28 According to the target service coverage prediction completed in step 26 and the network performance statistics completed in step 27, it is determined that the target service coverage has a problematic area;
  • the target service coverage prediction and network performance statistical analysis of t can determine the problem areas in the planned 3G network.
  • Step 29 Provide a corresponding solution optimization solution for the problematic area; specifically: For problem areas that cannot meet the target service, such as Ec pil . t problem area, you can add sectors or add new sites to solve the coverage problem; for EcIo pil . t problem area, the original sector antenna engineering parameters bearing (main lobe direction), down tilt (downward tilt) can be adjusted.
  • Step 210 The simulation simulation planning optimization scheme involves adjusting the amount of the road test data of the cell after the antenna engineering parameter is changed or the antenna is added;
  • the received signal Ec pil of the newly added cell in the road test area and the coverage area radius is simulated by simulation. t , and merged into the original drive test data by interpolation. After correcting the original drive test data, recalculate the Ec pilot s EcIo pil of the drive test area. t performance, verify whether the corresponding problem area has been resolved, determine the feasibility of the program;
  • the working frequency band of 2G cellular radio system is divided into 900MHz and 1800MHz.
  • the working frequency band of 3G cellular radio system is around 2GHz.
  • the propagation and loss characteristics of radio waves are similar.
  • the propagation characteristics can be described by the Cost-Hata model, assuming that the 2G system operates in the band 2C - 18 . . (MHz), the 3G system operating frequency band is
  • the theoretical path loss of the 3G network is PL3 . i can be calculated as follows:
  • the working frequency band is very far away from the 3G working frequency band 2GHz.
  • the difference in reflection loss and diffraction during the propagation process is relatively large, and the two cannot share the same propagation model.
  • the cost-hata model is 1500MHz ⁇ 2000MHz
  • the Okumura-Hata model is 1501000MHz. Therefore, the 900MHz 2G wireless cellular network system is suitable for the Okumura-Hata model.
  • the path loss difference value 1 " 1 ⁇ from the frequency difference According to the Okumura-Hata model, the urban 900MHz 2G wireless system road test sample and cell
  • the path loss PL ⁇ i between i is calculated as follows:
  • Hm the height of a mobile station
  • the path loss difference PL M due to the frequency difference can be calculated :
  • the PL Af calculation formula can be further simplified:
  • the correction parameter C""TM'_ ⁇ 0 is:
  • the present invention also provides an optimized processing solution for the above-mentioned planned 3G network, and the specific implementation manner is as shown in FIG. 3, including:
  • Step 31 Acquire path test data of the entire 3G network after the planning based on each sampling test point, and perform a road test area cell pilot channel receiving signal ⁇ 01 and a signal-to-interference ratio Ecl0p U based on the road test data. Calculation of t ;
  • the 3G network path measurement area cell pilot channel reception signal Ec pil can be directly sampled in the road test data of the 3G network optimization stage. t and the signal to the ratio of Eclopiiot, and then, based on the obtained values for the optimization of the 3G network;
  • the method of the present invention does not rely on the corresponding propagation model for network planning, but based on the true path loss between the cell antenna and the road measurement point in the road test area, and performs the 3G network planning optimization area.
  • the received signal Ec and the signal-to-interference ratio of the target service cover the prediction, and therefore, the accuracy of the network planning can be greatly improved.
  • the invention is particularly applicable to the existing 2G network of the operator, and is planned according to the 3G network and the 2G network co-site and the common antenna construction principle.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de mise en œuvre permettant l’organisation de réseaux de systèmes de communication sans fil. Il se caractérise principalement par une utilisation adéquate des valeurs d’acheminement du réseau 2G existant. Ce procédé permet d’obtenir les données d’individuation de chaque site ; le plan du réseau 3G se base donc sur la consommation réelle de la voie d’acheminement dans la plage des valeurs d’acheminement du réseau 2G et permet de prévoir de manière précise le niveau de puissance du signal Ecpilote reçu et le rapport signal/interférence EcIopilote du canal pilote correspondant aux cellules de desserte/voisines du réseau 3G. Une analyse et une prévision de couverture du réseau 3G sont ensuite réalisées, ce qui permet d’améliorer efficacement la précision du plan. En outre, les entreprises qui utilisent le réseau 2G peuvent conserver la même adresse de station et la même antenne pour les réseaux 3G et 2G, ce qui permet de réduire considérablement les frais d’établissement du réseau 3G. La méthode proposée est simple ; elle peut être mise en oeuvre aisément et de manière bénéfique pour le destinataire.
PCT/CN2006/000553 2005-04-06 2006-03-30 Procede de mise en oeuvre pour l’organisation de reseaux de systemes de communication sans fil WO2006105716A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102651071A (zh) * 2012-04-06 2012-08-29 天津大学 基于支持向量机的机舱内部路径损耗预测方法
CN103533554A (zh) * 2013-10-21 2014-01-22 上海邮电设计咨询研究院有限公司 一种基于3g路测数据预测4g lte网络覆盖的方法
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Families Citing this family (21)

* Cited by examiner, † Cited by third party
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CN101267643B (zh) * 2007-03-12 2011-07-13 中兴通讯股份有限公司 提高网络规划仿真精度的方法
CN101141775B (zh) * 2007-04-30 2010-06-16 中兴通讯股份有限公司 基于路测数据的导频污染优化方法
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CN101119573B (zh) * 2007-08-16 2011-05-04 中讯邮电咨询设计院 用于3g规划仿真软件的2g业务数据导入方法
CN101420701B (zh) * 2007-10-23 2011-03-02 中兴通讯股份有限公司 一种基于规划阶段测试数据评估网络性能的方法及其装置
CN101222748B (zh) * 2008-01-29 2010-12-29 中兴通讯股份有限公司 一种用于无线网络规划的装置及其方法
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WO2013112189A1 (fr) * 2012-01-23 2013-08-01 Intel Corporation Association d'utilisateur assistée par réseau et techniques et de délestage de réseaux hétérogènes intégrés à technologie de multiples accès radio
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CN113891379A (zh) * 2021-09-14 2022-01-04 中铁三局集团有限公司 基于bim+gis模拟铁路无线通信网络信号覆盖规划基站建设方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002023804A2 (fr) * 2000-09-11 2002-03-21 Nortel Networks Limited Outil de planification de reseau
DE10061550A1 (de) * 2000-12-11 2002-06-20 Gta Geoinformatik Gmbh Vorrichtung und Verfahren zur mikrozellularen Funknetzplanung mittels einer Orientierungsplattform
CN1556661A (zh) * 2004-01-12 2004-12-22 中兴通讯股份有限公司 一种无线网络规划的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107366B (fi) * 1998-10-29 2001-07-13 Nokia Networks Oy Menetelmä ja laitteisto verkkosuunnittelun toteuttamiseksi
US6336035B1 (en) * 1998-11-19 2002-01-01 Nortel Networks Limited Tools for wireless network planning
IT1320733B1 (it) * 2000-10-27 2003-12-10 Cselt Centro Studi Lab Telecom Sistema e metodo per la pianificazione di una rete per apparecchiature mobili di telecomunicazioni.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002023804A2 (fr) * 2000-09-11 2002-03-21 Nortel Networks Limited Outil de planification de reseau
DE10061550A1 (de) * 2000-12-11 2002-06-20 Gta Geoinformatik Gmbh Vorrichtung und Verfahren zur mikrozellularen Funknetzplanung mittels einer Orientierungsplattform
CN1556661A (zh) * 2004-01-12 2004-12-22 中兴通讯股份有限公司 一种无线网络规划的方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102651071A (zh) * 2012-04-06 2012-08-29 天津大学 基于支持向量机的机舱内部路径损耗预测方法
CN103533554A (zh) * 2013-10-21 2014-01-22 上海邮电设计咨询研究院有限公司 一种基于3g路测数据预测4g lte网络覆盖的方法
CN112738838A (zh) * 2020-12-25 2021-04-30 中国联合网络通信集团有限公司 一种传播模型的确定方法及装置
CN116865807A (zh) * 2023-07-17 2023-10-10 东方空间技术(山东)有限公司 一种可切换式遥测天馈系统设计方法及遥测天馈系统
CN116865807B (zh) * 2023-07-17 2024-03-19 东方空间技术(山东)有限公司 一种可切换式遥测天馈系统设计方法及遥测天馈系统

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