WO2011066745A1 - 定位网络中弱覆盖区域的方法及装置 - Google Patents

定位网络中弱覆盖区域的方法及装置 Download PDF

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Publication number
WO2011066745A1
WO2011066745A1 PCT/CN2010/074334 CN2010074334W WO2011066745A1 WO 2011066745 A1 WO2011066745 A1 WO 2011066745A1 CN 2010074334 W CN2010074334 W CN 2010074334W WO 2011066745 A1 WO2011066745 A1 WO 2011066745A1
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cell
call
weak coverage
pilot
coverage area
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PCT/CN2010/074334
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English (en)
French (fr)
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田炜
裴慧民
韩桂鲁
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中兴通讯股份有限公司
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Publication of WO2011066745A1 publication Critical patent/WO2011066745A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/08Testing, supervising or monitoring using real traffic
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for locating a weak coverage area in a network.
  • 3G (3 rd Generation, third generation mobile communication) network to the development stage, has relatively perfect network function, the outsider has basically meet the needs of various application scenarios.
  • 3G (3 rd Generation, third generation mobile communication) network to the development stage, has relatively perfect network function, the outsider has basically meet the needs of various application scenarios.
  • large-scale commercial networks expand and build in the world at a rapid pace, and the user community continues to develop, operators are not simply satisfied with the requirements of network functions, and are increasingly turning their attention to network performance requirements. For example, requirements for network system connection rate, network paging response rate requirements, call quality requirements, and the like.
  • Network optimization work is increasingly becoming an important means of improving network quality. As far as the current situation analysis is concerned, the improvement of network performance requires a relatively long process.
  • large-scale commercial networks there are many reasons for affecting network quality, and different reasons are different in different networks.
  • the weak coverage area not only affects the quality of network calls, but also causes a lot of dropped calls, resulting in a series of problems such as low paging response rate, causing a large number of complaints from users.
  • the traditional means of locating weak coverage areas mainly relies on network optimization personnel to manually test and analyze the network coverage, which is the road test we often say to determine the weak coverage area in the network.
  • the method of manual testing consumes a lot of manpower and resources, and the data obtained is difficult to cover all areas of the network, and it does not reflect the problem of deep network coverage.
  • the difference between the wireless environment of the road surface and the indoor wireless environment the difference between the wireless environment of the road surface and the wireless environment between different floors, and the like.
  • the manual test method consumes a large amount of manpower and material resources, but it is difficult to achieve the desired optimization effect. How to find an effective way to locate weak coverage areas has become a network optimization The key factors for success or failure.
  • the technical problem to be solved by the present invention is to provide a method and apparatus for locating a weak coverage area in a network, which can accurately locate a weak coverage area in the network.
  • the present invention provides a method for locating a weak coverage area in a network, the method comprising: recording call information of all users in a wireless network, where the call information includes pilots and guides of a pre-release active set of the user terminal.
  • the frequency strength and the reason for the release of the call determining the call drop record in the call information due to the poor quality of the wireless environment, and determining the cell in which the user terminal is released according to the pilot in the active set corresponding to the call drop record; Perform statistical analysis on the cell to locate a weak coverage area in the wireless network.
  • the call loss record in the call information due to the poor quality of the wireless environment is determined in the following manner: the call record is discriminated from the call release reason according to the call release reason in the call information; and the identification is determined by combining the pilot strength determination The call drop record is due to the poor quality of the wireless environment.
  • the process of performing statistical analysis on the cell includes: sorting the cells according to pilot strength of the active centralized cell; and separately counting the number of dropped calls of each combination according to the sorted cell combination, and The cell in the cell combination with the most number of calls is determined to be a weak coverage area.
  • the process of performing statistical analysis on the cell includes: if the number of dropped calls of a certain cell accounts for a proportion of all cell combinations exceeding a predetermined threshold, determining that the cell is a weak coverage area caused by the island station.
  • the proportion of each combination in all cell combinations is equal, determining that the multiple cell combinations are weak coverage caused by pilot pollution Area.
  • the call information includes multiple handover information before the user terminal is released, and the activation set pilot and pilot strength are included in each handover information;
  • the present invention also provides an apparatus for locating a weak coverage area in a network, the apparatus comprising: a call information recording module and a statistical analysis module, wherein the call information recording module is configured to: record call information of all users in the wireless network and Sending to the statistical analysis module, where the call information includes a pilot, a pilot strength, and a call release cause of the active set before the user terminal is released; the statistical analysis module is configured to: determine that the call information is due to a wireless environment a call drop record caused by a poor quality, and determining, according to the pilot in the active set corresponding to the call drop record, a cell in which the user terminal is released; performing statistical analysis on the cell to locate a weak cover in the wireless network Zone i or.
  • the statistical analysis module is configured to: determine, in the following manner, a call drop record in the call information due to a poor quality of the wireless environment: discriminating the call record from the call release reason in the call information; The combination of the pilot strength to determine the dropped call record is due to the poor quality of the wireless environment.
  • the statistical analysis module is configured to: perform the following statistical analysis on the cell: sort the cells according to the pilot strength of the active centralized cell; and separately count each combination according to the sorted cell combination The number of words, and the cell in the cell combination with the most number of dropped calls is determined as a weak coverage area.
  • the statistical analysis module is configured to: perform the following statistical analysis on the cell: if the number of dropped calls of a certain cell accounts for a proportion of all cell combinations exceeding a predetermined threshold, then Determining that the cell is a weak coverage area caused by an island station; if there are multiple cell combinations in the statistical result, and each combination accounts for a proportion in all cell combinations, determining that the multiple cell combinations are pilot pollution a weak coverage area; and if the call information includes multiple handover information before the user terminal is released, and the active set in the last handover information before the user terminal is released, there is no strong pilot, and the last time If there is a strong pilot in the active set in the other switching information other than the switching information, it is determined that there is a weak coverage area caused by the elevator or the indoor corner in the cell in the active set in the last switching information.
  • FIG. 1 is a flowchart of a method for locating a weak coverage area in a network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an apparatus for locating a weak coverage area in a network according to an embodiment of the present invention.
  • the core idea of the present invention is: by analyzing the call information of a network user, finding a call drop record due to poor quality of the wireless environment, and determining the user according to the pilot in the active set before the user drops the call in the call information. In the area where the call is dropped, statistical analysis is performed on the areas where the user loses the call due to the poor wireless environment, thereby locating the weak coverage area with poor wireless environment.
  • Step 101 Record call information of all users in the wireless network, where the call information includes at least a pilot, a pilot strength, and a call release reason of the active set before the terminal is released; where the record includes a normal call record and a call drop record.
  • the call record can be discriminated from the call information according to the call release reason.
  • the call information may further include the last four handover information of the terminal during the call, where the handover information includes the terminal activation set, the pilot set of the candidate set, and the pilot strength.
  • Step 102 classify the recorded wireless network user call information, and find a call drop record caused by poor quality of the wireless environment signal (ie, poor signal quality); wherein, according to the call release reason, the pilot strength may be combined to determine the call drop. Whether it is due to poor signal quality in the wireless environment.
  • Step 103 Determine, in the found call record, the pilot of the active set before releasing the terminal, and then determine, according to the pilot of the active set, the cell where the user calls the call drop; Step 104, according to the determined cell, according to the terminal before the call is dropped
  • the cell performs statistical analysis on the pilot strength in the active set, and finds the weak coverage area in the network according to the statistical result, and the wireless environment status of the area, that is, the wireless signals transmitted by the cells in the area, and the cells transmit The strength of the signal, etc.
  • the specific steps for statistics based on pilot strength are as follows:
  • the cell with strong pilot strength is ranked in front.
  • the cells with weak pilot strength are listed behind;
  • the number of dropped calls of each combination is counted, and the more the number of dropped calls, the greater the influence of the cells involved in the combination on the weak coverage call drop. For example, the statistics of the 100-time wireless environment difference caused by the call drop are counted.
  • A, B The call drop combination of the two cells accounts for 80 times, so that the boundary area wireless environment of the coverage areas of the two cells A and B can be determined. Poor, there is a high probability of weak coverage.
  • the weak coverage area described here refers to an area where the wireless environment is relatively poor. The weak coverage area generally causes the terminal to drop calls during the call. It should be noted that weak coverage is not necessarily due to the letter.
  • the coverage of the number is not enough, and the mutual interference before the signals of each cell is also likely to cause weak coverage.
  • the weak coverage area is due to weak coverage caused by the island station, weak coverage caused by pilot pollution, weak coverage caused by RF power, weak coverage caused by indoor corners, etc.
  • the wireless signal quality of the coverage area provides strong support. For example, for 100 times of call drop records due to wireless environment quality problems, if there is and only the call drop record of the A cell exceeds a predetermined threshold (for example, more than 80 times), it can be inferred that the area is an island station coverage. Since there is no other cell coverage at the boundary of the cell, when the terminal moves to the boundary of the cell, the call is dropped due to poor signal quality.
  • the statistics result in multiple caller cell combinations, and the proportion of each combination is not 4, for example, cell combination (A, B) (B, C) and (A, C) occupy a similar proportion (that is, roughly equal), then it can be inferred that the region is a pilot contaminated area, which is covered by multiple cells, but the signal of each covered cell In this area, it is weaker, causing the terminal to drop calls due to signal quality problems during the call.
  • each handover information has an active set pilot and pilot strength, and the call set activation set refers to the active set in the last handover information;
  • the active set before the call refers to the active set in the switch information before the last switch information saved in the call log.
  • the weak coverage problem is handled differently. For the weak coverage generated by the island station, it is necessary to increase the transmission power of the base station or consider adding stations; for the weak coverage caused by pilot pollution, it is necessary to adjust the coverage of the surrounding base stations. Ensure that there are one or two strong pilots in the area; for the elevator or indoor corner area, for example, the user has better signal before entering the elevator. After entering the elevator, because the elevator is shielded, the signal quality is rapidly degraded, resulting in dropped calls, then consider adding indoors. cover.
  • the apparatus for locating a weak coverage area in a network includes: The information recording module 201 and the statistical analysis module 202 are configured to: record call information of all users in the wireless network and send the call information to the statistical analysis module 202, where the call information includes at least the active set before the user terminal is released.
  • the statistical analysis module 202 is configured to: determine a call drop record in the call information due to poor quality of the wireless environment, and then determine the user terminal release according to the pilot in the active set corresponding to the call drop record The former cell; statistical analysis of the cell to locate the weak coverage area in the wireless network.
  • the statistical analysis module 202 is configured to: determine the call drop record in the call information due to the poor quality of the wireless environment in the following manner: discriminate the call record from the call release reason in the call information; and determine the combined pilot strength The dropped call records are due to the poor quality of the wireless environment. Further, the statistical analysis module 202 is configured to: perform the following statistical analysis on the cell: sort the d and the area according to the pilot strength of the active centralized cell; and separately count the number of dropped calls of each combination according to the sorted cell combination, and The cell in the cell combination with the most number of dropped calls is determined as a weak coverage area.
  • the statistical analysis module 202 is configured to: perform the following statistical analysis on the cell: if the number of dropped calls of a certain cell accounts for a proportion of all cell combinations exceeding a predetermined threshold, determining that the cell is a weak coverage area caused by the island station If there are multiple cell combinations in the statistical result, and the proportion of each combination in all cell combinations is equal, it is determined that the multiple cells are combined into a weak coverage area caused by pilot pollution; and if the call information includes the user terminal release The previous switching is performed multiple times, and there is no strong pilot in the active set in the last switching information before the user terminal is released, and there is a strong pilot in the active set in the other switching information except the last switching information, and the last switching is determined. There is a weak coverage area caused by an elevator or indoor corner in the cell in the active set in the message.
  • the weak coverage area in the network can be quickly and accurately found.
  • Network optimization work to improve the quality of network optimization; at the same time, it can solve the workload of network optimization personnel manual test analysis and reduce the cost of network optimization.
  • the present invention analyzes the call record information of users in the network, and uses a method similar to "all-people road test" to quickly and accurately find the weak coverage area in the network, and obtain targeted optimization measures to achieve Quickly and accurately optimize the purpose of the network.
  • the present invention provides a method and apparatus for locating a weak coverage area in a network.
  • the method of "all-people road test” is used to quickly and accurately find a weak coverage area in the network. And take targeted optimization measures to achieve fast and accurate optimization of the network.
  • no special manual testing is required, which can save the cost of manual testing by network optimizers and improve the efficiency of network optimization.

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

Abstract

本发明公开了一种定位网络中弱覆盖区域的方法及装置,其中,所述方法包括:记录无线网络中所有用户的呼叫信息,所述呼叫信息包括用户终端释放前激活集的导频、导频强度及呼叫释放原因;确定所述呼叫信息中由于无线环境质量差导致的掉话记录,再根据所述掉话记录对应的激活集中的导频确定所述用户终端释放前所在的小区;对所述小区进行统计分析,定位出无线网络中的弱覆盖区域。本发明能够在大规模的商用网络中快速准确的定位出网络中的弱覆盖区域,有针对性的实施优化方案,指导网络优化工作,从而达到高效优化网络的目的。

Description

定位网络中弱覆盖区域的方法及装置 技术领域 本发明涉及通信领域, 尤其涉及一种定位网络中弱覆盖区域的方法及装 置。
背景技术
3G ( 3rd Generation, 第三代移动通信) 网络发展到现阶段, 网络功能已 相对比较完善, 在局外也已经基本能够满足各种应用场景的需要。 随着大规 模商用网络以突飞猛进的速度在全球扩容、 建设, 用户群体的不断发展, 运 营商已不简单的满足于对网络功能的要求, 越来越多地将目光转向对网络性 能的要求。 例如对网络系统接通率的要求, 对网络寻呼响应率的要求, 对通 话质量的要求,等等。 网络优化工作也越来越成为提高网络质量的重要手段。 而就目前的情况分析, 网络性能的提升还需要一个相对比较漫长的过程。 在 局外大规模的商用网络中, 影响网络质量的原因众多, 并且不同的原因在不 同网络中的表现程度也各不相同, 但在所有的商用网络中, 弱覆盖导致的网 络性能下降都是影响网络质量、 降低网络指标的重要原因之一。 弱覆盖区域 不但影响网络通话质量, 而且容易引起掉话, 导致寻呼响应率低等一系列问 题, 引起用户大量投诉。 在局外大规模的商用网络中, 如何在现网中准确找 出网络中的弱覆盖区域, 进而有针对性能实施优化方案, 成为影响网络优化 工作的关键所在。 传统定位弱覆盖区域的手段主要是依靠网络优化人员在网络覆盖范围内 人工测试分析, 也就是我们常说的路测, 来确定网络中的弱覆盖区域。但是, 人工测试的方式在耗费大量人力物力的同时, 得到的数据也很难覆盖到网络 中的所有区域, 并且也不能反映网络深度覆盖的问题。 例如路面的无线环境 与室内无线环境的差异, 路面无线环境与不同楼层间无线环境的差异等等。 可见人工测试的方式在耗费大量的人力物力的同时, 却难以达到理想的优化 效果。 如何能够找到一种行之有效的定位弱覆盖区域的方法, 已成为网络优 化成败的关键因素。
发明内容 本发明要解决的技术问题是提供一种定位网络中弱覆盖区域的方法及装 置, 能够准确定位网络中的弱覆盖区域。 为了解决上述问题, 本发明提供了一种定位网络中弱覆盖区域的方法, 该方法包括: 记录无线网络中所有用户的呼叫信息, 所述呼叫信息包括用户终端释放 前激活集的导频、 导频强度及呼叫释放原因; 确定所述呼叫信息中由于无线环境质量差导致的掉话记录, 再根据所述 掉话记录对应的激活集中的导频确定所述用户终端释放前所在的小区; 以及 对所述小区进行统计分析, 定位出无线网络中的弱覆盖区域。 优选地, 釆用如下方式确定所述呼叫信息中由于无线环境质量差导致的 掉话记录: 根据所述呼叫信息中的呼叫释放原因从中甄别出掉话记录; 以及 结合导频强度确定所甄别出的掉话记录是由于无线环境质量差导致。 优选地, 对所述小区进行统计分析的过程包括: 按照激活集中小区的导频强度对所述小区进行排序; 以及 根据排序后的小区组合, 分别统计每种组合的掉话次数, 并将掉话次数 最多的小区组合中的小区判定为弱覆盖区域。 优选地, 对所述小区进行统计分析的过程包括: 如果某一小区的掉话次数占所有小区组合中的比例超出预定的阔值, 则 判定该小区为孤岛站引起的弱覆盖区域。 优选地, 如果所述统计结果中存在多个小区组合, 且各组合在所有小区 组合中所占的比例相当, 则判定所述多个小区组合为导频污染引起的弱覆盖 区域。 优选地, 所述呼叫信息中包含用户终端释放前的多次切换信息, 且每次 切换信息中包含激活集导频及导频强度;
如果用户终端释放前最后一次切换信息中的激活集不存在强导频, 且所 述最后一次切换信息以外的其他切换信息中的激活集中存在强导频, 则判定 所述最后一次切换信息中的激活集中的小区内存在室内拐角或电梯引起的弱 覆盖区 i或。 本发明还提供了一种定位网络中弱覆盖区域的装置, 该装置包括: 呼叫 信息记录模块和统计分析模块, 其中, 所述呼叫信息记录模块设置成: 记录无线网络中所有用户的呼叫信息并 发送给所述统计分析模块, 其中, 所述呼叫信息包括用户终端释放前激活集 的导频、 导频强度及呼叫释放原因; 所述统计分析模块设置成: 确定所述呼叫信息中由于无线环境质量差导 致的掉话记录, 再根据所述掉话记录对应的激活集中的导频确定所述用户终 端释放前所在的小区; 并对所述小区进行统计分析, 定位出无线网络中的弱 覆盖区 i或。 优选地, 所述统计分析模块设置成: 釆用如下方式确定所述呼叫信息中 由于无线环境质量差导致的掉话记录: 根据所述呼叫信息中的呼叫释放原因从中甄别出掉话记录; 以及 结合导频强度确定所甄别出的掉话记录是由于无线环境质量差导致。 优选地, 所述统计分析模块设置成: 对所述小区进行如下统计分析: 按照激活集中小区的导频强度对所述小区进行排序; 以及 根据排序后的小区组合, 分别统计每种组合的掉话次数, 并将掉话次数 最多的小区组合中的小区判定为弱覆盖区域。 优选地, 所述统计分析模块设置成: 对所述小区进行如下统计分析: 如果某一小区的掉话次数占所有小区组合中的比例超出预定的阔值, 则 判定该小区为孤岛站引起的弱覆盖区域; 如果所述统计结果中存在多个小区组合, 且各组合在所有小区组合中所 占的比例相当, 则判定所述多个小区组合为导频污染引起的弱覆盖区域; 以 及 如果所述呼叫信息中包含用户终端释放前的多次切换信息, 而所述用户 终端释放前最后一次切换信息中的激活集不存在强导频, 且所述最后一次切 换信息以外的其他切换信息中的激活集中存在强导频, 则判定所述最后一次 切换信息中的激活集中的小区内存在电梯或室内拐角引起的弱覆盖区域。
与现有技术相比, 釆用本发明技术方案具有如下有益效果:
1、 能够在大规模的商用网络中快速准确的定位出网络中的弱覆盖区域, 有针对性的实施优化方案, 指导网络优化工作, 从而达到高效优化网络的目 的;
2、 不需要专门的人工测试, 可以节约网络优化人员人工测试的成本,提 高网络优化的效率。
附图概述 图 1为本发明实施例的定位网络中弱覆盖区域的方法流程图; 图 2为本发明实施例的定位网络中弱覆盖区域的装置示意图。
本发明的较佳实施方式 本发明的核心思想是: 通过分析网络用户的呼叫信息, 找出由于无线环 境质量差导致的掉话记录, 根据呼叫信息中用户掉话前激活集中的导频确定 用户掉话前所在的区域, 再对这些由于无线环境差导致用户掉话的区域进行 统计分析, 从而定位出无线环境差的弱覆盖区域。 基于上述思想, 如图 1所示, 本发明实施例中釆用如下技术方案: 步骤 101 , 记录无线网络中所有用户的呼叫信息, 该呼叫信息中至少包 括终端释放前激活集的导频、 导频强度及呼叫释放原因; 此处记录包括正常通话记录以及掉话记录在内的所有呼叫信息, 根据呼 叫释放原因可以从呼叫信息中甄别出掉话记录。 可选地, 该呼叫信息中还可 以包含在通话过程中终端的最后四次切换信息, 切换信息中包含了终端激活 集、 候选集的导频及导频强度。 步骤 102, 对记录的无线网络用户呼叫信息进行分类, 找出由于无线环 境信号质量差 (即信号质量差)导致的掉话记录; 其中, 根据呼叫释放原因再结合导频强度就可以确定掉话是否是由于无 线环境信号质量差所致。 步骤 103 , 确定找到的掉话记录中终端释放前激活集的导频, 再根据激 活集的导频确定用户呼叫掉话前所在的小区; 步骤 104 , 针对所确定的小区, 根据终端掉话前该小区在激活集中的导 频强度进行统计分析, 并根据统计结果找到网络中的弱覆盖区域, 以及该区 域的无线环境状况, 即该区域都能收到哪些小区发射的无线信号, 各小区发 射信号的强弱等。 其中, 根据导频强度进行统计的具体步骤如下:
1 ,对每一次由于无线环境差导致掉话的记录,按照掉话前激活集中小区 的导频强度排序, 根据导频强弱对呼叫维持的贡献大小, 将导频强度强的小 区排在前面, 导频强度弱的小区排在后面;
2,根据排序后的小区组合, 统计每种组合的掉话次数,掉话次数越多的 组合, 该组合涉及的小区对弱覆盖掉话影响越大。 例如对 100次无线环境差 导致掉话的记录进行统计, (A, B ) 两个小区的掉话组合共占到 80次, 那 么就能确定 A、 B两个小区覆盖范围的边界区域无线环境比较差, 存在弱覆 盖的可能性很大。 此处所述的弱覆盖区域是指无线环境比较差的区域, 弱覆盖区域一般容 易导致终端在通话过程中掉话。 需要注意的是, 弱覆盖并不一定都是由于信 号覆盖不到所致, 各小区信号之前的相互干扰也容易导致弱覆盖。 对上述统计结果进行评估, 就可以进一步确认弱覆盖区域是由于孤岛站 引起的弱覆盖、 导频污染引起的弱覆盖、 射频功率引起的弱覆盖、 室内拐角 导致的弱覆盖等原因, 对优化弱覆盖区域的无线信号质量提供有力的支持。 例如对 100次由于无线环境质量问题导致的掉话记录进行统计, 如果激 活集中有且只有 A小区的掉话记录超出预定阔值(例如超过 80次) , 那么 可以推断该区域是孤岛站覆盖, 由于该小区的边界没有其它小区覆盖, 导致 终端移动到该小区的边界时, 由于信号质量差导致掉话。 如果对 100次由于无线环境质量问题导致的掉话记录进行统计, 统计结 果出现多个掉话小区组合, 并且每个组合所占的比例又不是 4艮大, 例如, 小 区组合(A, B ) 、 (B, C )和(A, C )所占的比例相当 (即大致相等) , 那么可以推断该区域是导频污染区, 该区域是被多个小区覆盖, 但是每个覆 盖小区的信号在该区域又都比较弱, 导致终端在通话过程中由于信号质量问 题掉话。 如果对 100次由于无线环境质量问题导致的掉话记录进行统计, 统计结 果中, 掉话之前激活集中存在强导频(一般认为导频强度大于 -13db 就算强 导频) , 但是掉话时激活集没有强导频, 那么可以推断该区域(指释放时激 活集中的小区覆盖范围) 内存在电梯或室内拐角。 其中, 由于掉话记录中保 存了多次切换信息, 每次切换信息都有激活集导频及导频强度, 所述掉话时 激活集是指最后一次切换信息中的激活集; 所述掉话之前的激活集是指掉话 记录中保存的最后一次切换信息之前的切换信息中的激活集。 对于各种原因导致弱覆盖问题的处理方式也不同, 对于孤岛站产生的弱 覆盖,需要提高基站的发射功率或者考虑加站;对于导频污染引起的弱覆盖, 需要调整周边基站的覆盖范围, 保证该区域有一到两个强导频; 对于电梯或 者室内的拐角区域, 例如用户在进入电梯前信号比较好, 进入电梯后由于电 梯屏蔽, 信号质量快速衰落, 导致掉话, 则可以考虑增加室内覆盖。
如图 2所示, 本发明实施例的定位网络中弱覆盖区域的装置包括: 呼叫 信息记录模块 201和统计分析模块 202 , 其中, 呼叫信息记录模块 201设置成: 记录无线网络中所有用户的呼叫信息并 发送给统计分析模块 202, 其中, 呼叫信息中至少包括用户终端释放前激活 集的导频、 导频强度及呼叫释放原因; 统计分析模块 202设置成: 确定呼叫信息中由于无线环境质量差导致的 掉话记录, 再根据掉话记录对应的激活集中的导频确定用户终端释放前所在 的小区; 并对小区进行统计分析, 定位出无线网络中的弱覆盖区域。 进一步地, 统计分析模块 202设置成: 釆用如下方式确定呼叫信息中由 于无线环境质量差导致的掉话记录: 根据呼叫信息中的呼叫释放原因从中甄别出掉话记录; 以及 结合导频强度确定所甄别出的掉话记录是由于无线环境质量差导致。 进一步地, 统计分析模块 202设置成: 对小区进行如下统计分析: 按照激活集中小区的导频强度对 d、区进行排序; 根据排序后的小区组合, 分别统计每种组合的掉话次数, 并将掉话次数 最多的小区组合中的小区判定为弱覆盖区域。 进一步地, 统计分析模块 202设置成: 对小区进行如下统计分析: 如果某一小区的掉话次数占所有小区组合中的比例超出预定的阔值, 则 判定该小区为孤岛站引起的弱覆盖区域; 如果统计结果中存在多个小区组合, 且各组合在所有小区组合中所占的 比例相当, 则判定多个小区组合为导频污染引起的弱覆盖区域; 以及 如果呼叫信息中包含用户终端释放前的多次切换信息, 而用户终端释放 前最后一次切换信息中的激活集不存在强导频, 且最后一次切换信息以外的 其他切换信息中的激活集中存在强导频, 则判定最后一次切换信息中的激活 集中的小区内存在电梯或室内拐角引起的弱覆盖区域。
依照上述实施方案, 可以快速准确的找到网络中的弱覆盖区域, 指导网 络优化工作, 提高网络优化质量; 同时, 可以解决网络优化人员人工测试分 析的工作量, 降低网络优化的成本。 综上所述, 本发明通过分析网络中用户的呼叫记录信息, 釆用类似 "全 民路测" 的方式, 快速准确的找到网络中的弱覆盖区域, 并釆取有针对性的 优化措施, 达到快速准确优化网络的目的。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 尽管本发明结合特定实施例进行了描述, 但是对于本领域的技术人员来 说, 可以在不背离本发明的精神或范围的情况下进行修改和变化。 这样的修 改和变化被视作在本发明的范围和附加的权利要求书范围之内。
工业实用性 本发明提供一种定位网络中弱覆盖区域的方法及装置, 通过分析网络中 用户的呼叫记录信息, 釆用类似 "全民路测" 的方式, 快速准确的找到网络 中的弱覆盖区域, 并釆取有针对性的优化措施, 达到快速准确优化网络的目 的。 而且, 不需要专门的人工测试, 可以节约网络优化人员人工测试的成本, 提高网络优化的效率。

Claims

权 利 要 求 书
1、 一种定位网络中弱覆盖区域的方法, 该方法包括: 记录无线网络中所有用户的呼叫信息, 所述呼叫信息包括用户终端释放 前激活集的导频、 导频强度及呼叫释放原因; 确定所述呼叫信息中由于无线环境质量差导致的掉话记录, 再根据所述 掉话记录对应的激活集中的导频确定所述用户终端释放前所在的小区; 以及 对所述小区进行统计分析, 定位出无线网络中的弱覆盖区域。
2、 如权利要求 1所述的方法, 其中: 所述确定所述呼叫信息中由于无线环境质量差导致的掉话记录的步骤包 括: 根据所述呼叫信息中的呼叫释放原因从中甄别出掉话记录; 以及 结合导频强度确定所甄别出的掉话记录是由于无线环境质量差导致。
3、 如权利要求 1或 2所述的方法, 其中: 所述对所述小区进行统计分析, 定位出无线网络中的弱覆盖区域的步骤 包括: 按照激活集中小区的导频强度对所述小区进行排序; 以及 根据排序后的小区组合, 分别统计每种组合的掉话次数, 并将掉话次数 最多的小区组合中的小区判定为弱覆盖区域。
4、 如权利要求 3所述的方法, 其中: 在对所述小区进行统计分析,定位出无线网络中的弱覆盖区域的步骤中, 如果某一小区的掉话次数占所有小区组合中的比例超出预定的阔值, 则判定 该小区为孤岛站引起的弱覆盖区域。
5、 如权利要求 3所述的方法, 其中: 在对所述小区进行统计分析,定位出无线网络中的弱覆盖区域的步骤中, 如果所述统计结果中存在多个小区组合, 且各组合在所有小区组合中所占的 比例相当, 则判定所述多个小区组合为导频污染引起的弱覆盖区域。
6、 如权利要求 3所述的方法, 其中:
所述呼叫信息中包含用户终端释放前的多次切换信息, 且每次切换信息 中包含激活集导频及导频强度;
在对所述小区进行统计分析,定位出无线网络中的弱覆盖区域的步骤中, 如果用户终端释放前最后一次切换信息中的激活集不存在强导频, 且所述最 后一次切换信息以外的其他切换信息中的激活集中存在强导频, 则判定所述 最后一次切换信息中的激活集中的小区内存在室内拐角或电梯引起的弱覆盖 区域。
7、一种定位网络中弱覆盖区域的装置, 该装置包括: 呼叫信息记录模块 和统计分析模块, 其中,
所述呼叫信息记录模块设置成: 记录无线网络中所有用户的呼叫信息并 发送给所述统计分析模块, 其中, 所述呼叫信息包括用户终端释放前激活集 的导频、 导频强度及呼叫释放原因; 所述统计分析模块设置成: 确定所述呼叫信息中由于无线环境质量差导 致的掉话记录, 再根据所述掉话记录对应的激活集中的导频确定所述用户终 端释放前所在的小区; 并对所述小区进行统计分析, 定位出无线网络中的弱 覆盖区域。
8、 如权利要求 7所述的装置, 其中: 所述统计分析模块是设置成: 根据所述呼叫信息中的呼叫释放原因从中 甄别出掉话记录, 结合导频强度确定所甄别出的掉话记录是由于无线环境质 量差导致。
9、 如权利要求 7或 8所述的装置, 其中: 所述统计分析模块是设置成: 按照激活集中小区的导频强度对所述小区 进行排序, 根据排序后的小区组合, 分别统计每种组合的掉话次数, 并将掉 话次数最多的小区组合中的小区判定为弱覆盖区域。
10、 如权利要求 9所述的装置, 其中: 所述统计分析模块是设置成对所述小区进行如下统计分析: 如果某一小区的掉话次数占所有小区组合中的比例超出预定的阔值, 则 判定该小区为孤岛站引起的弱覆盖区域;
如果所述统计结果中存在多个小区组合, 且各组合在所有小区组合中所 占的比例相当, 则判定所述多个小区组合为导频污染引起的弱覆盖区域; 以 及 如果所述呼叫信息中包含用户终端释放前的多次切换信息, 而所述用户 终端释放前最后一次切换信息中的激活集不存在强导频, 且所述最后一次切 换信息以外的其他切换信息中的激活集中存在强导频, 则判定所述最后一次 切换信息中的激活集中的小区内存在电梯或室内拐角引起的弱覆盖区域。
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