WO2012097592A1 - 无线信道环境信息获取方法、装置和无线网络控制设备 - Google Patents

无线信道环境信息获取方法、装置和无线网络控制设备 Download PDF

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Publication number
WO2012097592A1
WO2012097592A1 PCT/CN2011/078755 CN2011078755W WO2012097592A1 WO 2012097592 A1 WO2012097592 A1 WO 2012097592A1 CN 2011078755 W CN2011078755 W CN 2011078755W WO 2012097592 A1 WO2012097592 A1 WO 2012097592A1
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Prior art keywords
information
channel
pilot
wireless
acquiring
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PCT/CN2011/078755
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English (en)
French (fr)
Inventor
刘丽娜
陆晓峰
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP11856605.8A priority Critical patent/EP2658306A4/en
Publication of WO2012097592A1 publication Critical patent/WO2012097592A1/zh
Priority to US13/947,828 priority patent/US20130316654A1/en

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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
    • H04W24/04Arrangements for maintaining operational condition

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a wireless network control device for acquiring wireless channel environment information. Background technique
  • the path that is experienced before reaching the receiving end is called a wireless channel.
  • a wireless channel the path that is experienced before reaching the receiving end.
  • various complex propagation paths are experienced, and the wireless signals are contaminated by various noises during the propagation of various paths. Therefore, the wireless signals will be transmitted during transmission. Transmission loss, even when the loss is severe, it is even difficult to recover.
  • performance anomalies occur in the wireless communication network, in order to ensure the user's feelings, it is necessary to locate and solve the abnormal problems in time.
  • the prior art adopts the manual method for road test, but it is difficult to reflect the real channel situation when the network performance is abnormal, and it is difficult to timely locate and process the abnormal situation of the user terminal or the network. Summary of the invention
  • the embodiment of the invention provides a method, a device and a wireless network control device for acquiring wireless channel environment information, so as to solve the problem that the existing channel is difficult to react to the abnormal performance of the network, and it is difficult to timely respond to the abnormal situation of the user terminal or the network. Positioning and handling issues.
  • An embodiment of the present invention provides a device for acquiring wireless channel environment information, including:
  • An obtaining unit configured to obtain a wireless signal sent by the terminal;
  • a channel information obtaining unit configured to acquire pilot information from the wireless signal, and calculate channel information according to the pilot information;
  • a storage unit configured to record the channel information.
  • the embodiment of the invention further provides a method for acquiring wireless channel environment information, including:
  • the embodiment of the invention further provides a wireless network control device, including: a wireless channel environment information acquiring device and a network maintenance operation center;
  • the wireless channel environment information acquiring apparatus is configured to: obtain a wireless signal sent by the terminal, acquire pilot information from the wireless signal, calculate channel information according to the pilot information, and record the channel information;
  • a network maintenance operation center configured to acquire the channel information from the wireless channel environment information acquiring device to locate a network abnormality.
  • the method and device for acquiring wireless channel environment information and the wireless network control device provided by the embodiments of the present invention receive the wireless signal sent by the terminal, calculate and save the channel information by using the received wireless signal, so that the user terminal or the network can accurately respond when an abnormality occurs in the network.
  • the real situation of the wireless channel can further improve the accuracy of the abnormal situation of the user terminal or the network, and improve the processing efficiency of the abnormal situation.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a wireless channel environment information acquiring apparatus according to the present invention
  • FIG. 2 is a schematic structural diagram of a wireless channel environment information acquiring device used in conjunction with other devices in a wireless communication system
  • FIG. 3 is a schematic structural diagram of a RRU shared by a wireless channel environment information acquiring device and a wireless network control device;
  • FIG. 4 is a schematic structural diagram of a BBU shared by a wireless channel environment information acquiring apparatus and a wireless network control apparatus;
  • FIG. 5 is a schematic diagram of a tile of a PUSC uplink channel
  • FIG. 6 is a schematic structural diagram of a second embodiment of a wireless channel environment information acquiring apparatus according to the present invention.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a wireless network control device according to the present invention
  • FIG. 8 is a flowchart of a first embodiment of a method for acquiring wireless channel environment information provided by the present invention. detailed description
  • FIG. 1 is a schematic structural diagram of a first embodiment of a wireless channel environment information acquiring apparatus according to the present invention. As shown in FIG. 1, the apparatus includes: an obtaining unit 11, a channel information obtaining unit 12, and a storage unit 13;
  • the obtaining unit 11 is configured to obtain a wireless signal sent by the terminal.
  • the channel information obtaining unit 12 is configured to acquire pilot information from the wireless signal, and calculate channel information according to the pilot information;
  • the channel information may be a channel impulse response.
  • the storage unit 13 is configured to record channel information.
  • the recording of the channel information by the storage unit 13 may specifically record the channel impulse response.
  • the embodiments of the present invention are applicable to multiple types of wireless communication systems such as Long Term Evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX).
  • LTE Long Term Evolution
  • WiMAX Worldwide Interoperability for Microwave Access
  • the wireless channel environment information acquiring apparatus can be used together with other devices in the wireless communication system, for example, a wireless network control device such as a base station, a radio network controller (RNC), and a wireless channel environment information.
  • the obtaining device may be disposed on the devices or establish a connection with the devices, so that the devices can reproduce the environment of the wireless communication network when detecting that the user terminal sends or receives an abnormality, thereby timely and accurately positioning the abnormality. .
  • the obtaining unit 11 may be a remote radio unit (RRU) device, and the device is provided with an antenna, and is capable of receiving a wireless signal sent by the terminal.
  • the channel information obtaining unit 12 acquires the pilot information of the wireless signal, and calculates the channel information based on the pilot information.
  • the channel information obtaining unit 12 may be a device such as a baseband unit (BBU).
  • FIG. 2 is a schematic diagram showing a connection between a wireless channel environment information acquiring device and a wireless network control device such as a base station or an RNC.
  • the obtaining unit 1 1 in the wireless channel environment information acquiring device is an RRU
  • the channel information obtaining unit 12 is a BBU.
  • the other RRU and the other BBU shown in Figure 2 are functional modules on a wireless network control device such as a base station or RNC.
  • the wireless channel environment information acquiring apparatus may share the RRU and/or the BBU with a wireless network control device such as a base station or an RNC.
  • a wireless network control device such as a base station or an RNC.
  • the radio channel environment information acquiring apparatus and the base station or the RNC may share the RRU (that is, the RRU of the base station or the RNC as the obtaining unit 11 of the apparatus), receive the radio signal through the RRU of the base station or the RNC, and then pass the channel information.
  • the obtaining unit 12 acquires pilot information from the wireless signal, and calculates channel information according to the pilot information; The interaction between the RNCs and without the need to define an interface between the device and the base station or RNC.
  • FIG. 1 the radio channel environment information acquiring apparatus and the base station or the RNC may share the RRU (that is, the RRU of the base station or the RNC as the obtaining unit 11 of the apparatus), receive the radio signal through the RRU of the base station or the RNC, and then pass the channel information.
  • the obtaining unit 12 acquires pilot information from the wireless signal, and calculates channel information according to the pilot information; The interaction between the RNCs and without the need to define an interface between the device and the base station or RNC.
  • the wireless channel environment information acquiring apparatus may further share a BBU with the base station or the RNC (that is, the BBU of the base station or the RNC is used as the obtaining unit 11 of the apparatus), and after obtaining the wireless signal sent by the terminal by the obtaining unit 11, Acquiring pilot information of the wireless signal by the base station or the BBU of the RNC, and calculating channel information according to the pilot information, thereby reducing interaction with the base station or the RNC, and eliminating the need to define an interaction interface between the device and the base station or the RNC .
  • a BBU with the base station or the RNC that is, the BBU of the base station or the RNC is used as the obtaining unit 11 of the apparatus
  • the signal transmitted by the PUSC uplink channel is obtained by taking the channel information of the channel as an example:
  • a time slot (slot) of a partial usage of a subchannel is composed of three orthogonal frequency division multiple access (OFDMA) symbols and one subcarrier.
  • Channel composition There are 48 data subcarriers and 24 fixed position pilots in each slot.
  • the subchannel consists of six upstream blocks, each consisting of four consecutive subcarriers.
  • Figure 5 shows the structure of a tile.
  • a user terminal for example: a mobile terminal (MS) transmits a pilot at a fixed location, for example: a symbol on a tile (Symbol 0) of Figure 5 and a first subcarrier and a fourth subcarrier of symbol 2 Frequency, while transmitting service data on the remaining subcarriers.
  • MS mobile terminal
  • the channel information obtaining unit 12 can obtain the pilot information X from the fixed position of the wireless (ie, the subcarrier), due to the pilot information.
  • X is the actual signal transmitted by the terminal
  • the channel information obtaining unit 12 After the channel information obtaining unit 12 acquires the channel information, it may be stored in the storage unit 13, and the storage unit 13 may be various storage media such as a hard disk.
  • the wireless channel environment can be reproduced by the channel information stored in the storage unit 13.
  • the channel information can be estimated by an algorithm such as SAGE (Space-alternating Generalized Expectation-maximization; SAGE) to obtain various parameters of the radio channel environment, thereby reproducing the environmental condition of the radio channel.
  • SAGE Space-alternating Generalized Expectation-maximization
  • the wireless channel environment information acquiring apparatus receives the wireless signal sent by the terminal, calculates and saves the channel information by using the received wireless signal, so that when the user terminal or the network is abnormal, the real situation of the wireless channel can be accurately reflected, and then Improve the accuracy of positioning abnormalities on user terminals or networks, and improve the processing efficiency of abnormal situations.
  • FIG. 6 is a schematic structural diagram of a second embodiment of a wireless channel environment information acquiring apparatus according to the present invention. As shown in FIG. 6, the apparatus includes: an obtaining unit 11, a channel information obtaining unit 12, and a storage unit 13;
  • the channel information obtaining unit 12 may be specifically configured to:
  • the storage unit 13 is specifically configured to: channel information corresponding to the pilot.
  • the channel information obtaining unit 12 may obtain the pilot information X from a fixed position (ie, a subcarrier) of the wireless, because the pilot information X is an actual signal sent by the terminal.
  • the channel information corresponding to the data in the wireless signal is obtained according to the channel information corresponding to the pilot.
  • the storage unit 13 is specifically configured to: the channel information corresponding to the pilot acquired by the channel information obtaining unit 12 and the channel information corresponding to the data.
  • the channel information obtaining unit 12 acquires the pilot pair channel information in the transmission signal, it can be seen in FIG. 5 that, on the symbol 0 on one tile, since the pilot signal is mapped to the first and the first On the four subcarriers, the second and third subcarriers are mapped with the service data sent by the terminal. Therefore, the impulse response H1 of the corresponding channel of the pilot signal on the first subcarrier and the fourth subcarrier can be respectively obtained. And H2, then perform interpolation calculation on H1 and H2 to obtain the impact response of the service data to the channel.
  • the channel information obtaining unit 12 Since the channel information obtaining unit 12 finally obtains the impulse response of the pilot signal transmitted by the terminal to the channel and the impact response of the service data transmitted by the terminal to the channel, the environment condition of the wireless channel can be truly reflected, thereby improving the user terminal. Or the accuracy of the abnormal situation of the network, and improve the processing efficiency of abnormal situations.
  • the wireless channel environment information acquiring apparatus may further include:
  • the calculating unit 14 is configured to estimate the wireless according to the channel information acquired by the channel information obtaining unit 12
  • the channel information reflects the environment of the wireless channel.
  • the channel information can be estimated by algorithms such as SAGE to obtain the environmental parameters of various wireless channels, thereby realizing the overall reproduction of the environmental conditions of the wireless channel.
  • the storage unit 13 is a storage medium such as a hard disk, and the storage space of the storage medium is limited, in order to make full use of the storage space of the storage unit 13, the storage unit 13 is prevented from being full.
  • the channel information stored by unit 13 is updated. When the stored data of the storage unit 13 reaches a certain value, the channel information saved first can be deleted, so that the information stored in the storage unit 13 can be continuously updated to timely reproduce the environmental conditions of the wireless system.
  • FIG. 7 is a schematic structural diagram of a first embodiment of a radio network control device according to the present invention.
  • the radio network control device may be an RNC or an evolved Node B (eNB), including: a radio channel environment.
  • the wireless channel environment information acquiring apparatus 1 is configured to: obtain a wireless signal sent by the terminal, obtain pilot information from the wireless signal, calculate channel information according to the pilot information, and record the channel information;
  • the network maintenance operation center 2 is configured to acquire the channel information from the wireless channel environment information acquiring device 1 to locate the network abnormality.
  • the wireless network control device includes the wireless channel environment information acquiring device 1 provided by the embodiment of the present invention.
  • the specific structure of the wireless channel environment information acquiring apparatus 1 can be referred to the foregoing embodiment, and details are not described herein.
  • the network maintenance operation center 2 may acquire the saved channel information from the storage unit of the wireless channel environment information acquiring apparatus 1 to locate the abnormal condition and reproduce the true state of the wireless channel. happening.
  • the wireless network control device receives the wireless signal sent by the terminal, calculates and saves the channel information through the received wireless signal, so that when the user terminal or the network is abnormal, the real situation of the wireless channel can be accurately reflected, thereby improving the The accuracy of the abnormal location of the user terminal or the network improves the processing efficiency of the abnormal situation.
  • FIG. 8 is a flowchart of a first embodiment of a method for acquiring wireless channel environment information according to the present invention. As shown in FIG. 8, the method includes:
  • the S102 obtains the pilot information from the wireless signal, and calculates the channel information according to the pilot information, which may specifically include:
  • the S102 acquiring the pilot information from the wireless signal, and calculating the channel information according to the pilot information may further include:
  • the channel information may be estimated by an algorithm such as SAGE to obtain environmental parameters of various wireless channels, thereby realizing the overall reproduction of the environmental condition of the wireless channel.
  • the channel information may be stored on a storage medium such as a hard disk, and the storage space of the storage medium is limited. In order to fully utilize the storage space of the storage medium, the storage medium is prevented from being full and the new channel information cannot be recorded. .
  • the channel information can be updated using a first-in, first-out method to reproduce the environmental conditions of the wireless system in time.
  • the embodiment of the method for acquiring the wireless channel environment information provided by the present invention corresponds to the embodiment of the wireless channel environment information acquiring device provided by the present invention.
  • the method for acquiring wireless channel environment information provided by the embodiment, receiving the wireless signal sent by the terminal, calculating and storing the channel information by using the received wireless signal, so that when the user terminal or the network is abnormal, the real situation of the wireless channel can be accurately reflected, and then Improve the accuracy of positioning abnormalities on user terminals or networks, and improve the processing efficiency of abnormal situations.
  • the storage medium may be a magnetic disk, an optical disk, or a read-only storage memory.
  • ROM Read-Only Memory
  • RAM random access memory

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明实施例提供一种无线信道环境信息获取方法、装置和无线网络控制设备。该装置包括:获得单元,用于获得终端发送的无线信号;信道信息获得单元,用于从所述无线信号中获取导频信息,并根据导频信息计算信道信息;存储单元,用于对所述信道信息进行记录。本发明实施例提供的无线信道环境信息获取方法、装置和无线网络控制设备,能够准确反应无线信道的真实情况,进而可以提高对用户终端或网络的异常情况定位的准确性,提高异常情况的处理效率。

Description

无线信道环境信息获取方法、 装置和无线网络控制设备 本申请要求于 2011 年 1 月 20 日提交中国专利局、 申请号为 201110023389.8、 发明名称为 "无线信道环境信息获取方法、 装置和无线网 络控制设备" 的中国专利申请的优先权, 其全部内容通过引用结合在本申请 中。 技术领域
本发明涉及通信技术领域, 特别涉及一种无线信道环境信息获取方法、 装置和无线网络控制设备。 背景技术
无线信号从发射端发送出去以后, 在到达接收端之前经历的路径称为无 线信道。 无线信号从发射天线到接收天线的传输过程中, 会经历各种复杂的 传播路径, 并且无线信号在各种路径的传播过程中会受到各种噪声的污染, 因此, 无线信号在传输时会有传输损耗, 损耗严重时甚至难以恢复。 当无线 通信网络中出现性能异常的时候, 为了保证用户感受就要对异常问题进行及 时定位和解决。
现有技术采用人工方式进行路测, 但难于反应网络性能异常时的真实信 道情况, 进而难于对用户终端或网络的异常情况进行及时定位和处理。 发明内容
本发明实施例提供了一种无线信道环境信息获取方法、 装置和无线网络 控制设备, 以解决现有结束难于反应网络性能异常时的真实信道情况, 进而 难于对用户终端或网络的异常情况进行及时定位和处理的问题。
本发明实施例提供一种无线信道环境信息获取装置, 包括:
获得单元, 用于获得终端发送的无线信号; 信道信息获得单元, 用于从所述无线信号中获取导频信息, 并根据导频 信息计算信道信息;
存储单元, 用于对所述信道信息进行记录。
本发明实施例还提供一种无线信道环境信息获取方法, 包括:
获得终端发送的无线信号;
从所述无线信号中获取导频信息, 并根据导频信息计算信道信息; 对所述信道信息进行记录。
本发明实施例还提供一种无线网络控制设备, 包括: 无线信道环境信息 获取装置和网络维护操作中心;
所述无线信道环境信息获取装置用于: 获得终端发送的无线信号, 从所 述无线信号中获取导频信息, 根据导频信息计算信道信息, 并对所述信道信 息进行记录;
网络维护操作中心, 用于从所述无线信道环境信息获取装置中获取所述 信道信息, 以对网络异常进行定位。
本发明实施例提供的无线信道环境信息获取方法、 装置和无线网络控制 设备, 接收终端发送的无线信号, 通过接收的无线信号计算并保存信道信息, 以便用户终端或网络出现异常时, 能够准确反应无线信道的真实情况, 进而 可以提高对用户终端或网络的异常情况定位的准确性, 提高异常情况的处理 效率。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面 描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1 为本发明提供的无线信道环境信息获取装置第一实施例的结构示意 图;
图 2所示为无线信道环境信息获取装置与无线通信系统中的其他设备配 合使用的结构示意图;
图 3 所示为无线信道环境信息获取装置和无线网络控制设备共用 RRU 的结构示意图;
图 4所示为无线信道环境信息获取装置和无线网络控制设备共用 BBU的 结构示意图;
图 5为 PUSC上行信道一个 tile的示意图;
图 6为本发明提供的无线信道环境信息获取装置第二实施例的结构示意 图;
图 7为本发明提供的无线网络控制设备第一实施例的结构示意图; 图 8为本发明提供的无线信道环境信息获取方法第一实施例的流程图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
图 1 为本发明提供的无线信道环境信息获取装置第一实施例的结构示意 图, 如图 1所示, 该装置包括: 获得单元 11、 信道信息获得单元 12和存储 单元 13;
其中, 获得单元 11 , 用于获得终端发送的无线信号;
信道信息获得单元 12, 用于从上述无线信号中获取导频信息, 并根据导 频信息计算信道信息;
在一个实施例中, 信道信息可以为信道冲击响应。
存储单元 13, 用于对信道信息进行记录。 在一个实施例中 ,存储单元 13对信道信息进行记录可以具体为对信道冲 击响应进行记录。
本发明实施例适用于长期演进(Long Term Evolution; LTE ) 、 微波存 取全球互通 ( Worldwide Interoperability for Microwave Access; WiMAX ) 等多种类型的无线通信系统。
本发明实施例提供的无线信道环境信息获取装置, 可以与无线通信系统 中的其他设备配合使用, 例如: 基站、 无线网络控制器 (Radio Network Controller; RNC )等无线网络控制设备, 无线信道环境信息获取装置可以设 置在这些设备上, 或者与这些设备建立连接, 以便这些设备检测到用户终端 发送或接收出现异常等情况时, 能够再现无线通信网络的环境情况, 从而对 异常进行及时、 准确的定位。
其中 , 获得单元 11可以为远端射频单元( Remote Radio Unit; RRU ) 等设备, 这些设备上设置有天线, 能够接收终端发送的无线信号。 获得单元 1 1接收到无线信号后,通过信道信息获得单元 12获取无线信号的导频信息, 并根据导频信息计算信道信息。其中,信道信息获得单元 12可以为基带处理 单元 ( Base Band Unit; BBU )等设备。
图 2所示为无线信道环境信息获取装置与基站或 RNC等无线网络控制 设备建立连接, 配合使用的示意图。 其中, 无线信道环境信息获取装置中的 获得单元 1 1为 RRU ,信道信息获得单元 12为 BBU。图 2所示的另一个 RRU 和另一个 BBU是基站或 RNC等无线网络控制设备上的功能模块。
作为一种较佳的实施方式, 无线信道环境信息获取装置还可以与基站或 RNC等无线网络控制设备共用 RRU和 /或 BBU。
如图 3所示, 无线信道环境信息获取装置与基站或 RNC可以共用 RRU (即将基站或 RNC的 RRU作为该装置的获得单元 11 ) , 通过基站或 RNC 的 RRU来接收无线信号, 然后通过信道信息获得单元 12, 从上述无线信号 中获取导频信息, 并根据导频信息计算信道信息; 这样可以减少与基站或 RNC之间的交互,并且无需对装置与基站或 RNC之间的交互接口进行定义。 同样, 如图 4 所示, 无线信道环境信息获取装置还可以与基站或 RNC 共用 BBU (即将基站或 RNC的 BBU作为该装置的获得单元 11 ) , 通过获 得单元 11获得终端发送的无线信号后, 通过基站或 RNC的 BBU获取无线 信号的导频信息, 以及根据导频信息计算信道信息, 这样可以减少与基站或 RNC之间的交互,并且无需对装置与基站或 RNC之间的交互接口进行定义。
通过对信道信息的参数化分析, 可以从信道信息中提取出描述信道环境 的 16维参数, 最终得到信道的真实情况, 为了对本发明实施例进行清楚的描 述, 以下以根据终端在 WiMAX系统中的 PUSC上行信道发射的信号, 获取 信道的信道信息为例进行说明:
具体的, 在 WiMAX 系统中, 部分占用子信道 ( Partial Usage of Subchannels ; PUSC ) 上行中一个时隙 ( slot ) 由三个正交频分多址 ( Orthogonal Frequency Division Multiple Access; OFDMA )符号和一个 子信道组成。 每一个时隙中有 48个数据子载波和 24个固定位置的导频。 子 信道由 6个上行的块(tile )组成, 每个 tile由 4个连续的子载波组成。 图 5 所示为一个 tile的结构示意图。 用户终端, 例如: 手机终端(MS )在固定的 位置发送导频, 例如: 在图 5中一个 tile上的符号 ( Symbol ) 0和符号 2的 第一个子载波和第四个子载波上发送导频, 而在其余的子载波上发送业务数 据。
终端发送的信号 X经过信道传播以后, 获得单元 11接收到终端发送的 无线信号 y后, 信道信息获得单元 12可以从无线的固定位置(即子载波)上 得到导频信息 X, 由于导频信息 X为终端发送的实际信号, 而无线信道环境 信息获取装置接收到的实际信号即为获得单元 11接收到的无线信号 y。 由于 y=H*x, 其中 H 即为信道信息, 在一个实施例中信道信息可以为信道冲击响 应, 通常以矩阵的形式表示。 因此, 信道信息获得单元 12可以根据 y=H*x 计算出信道信息 H。 获得单元 11接收到的信号为 y, y = x*h; 终端在固定的 导频位置上发送的是已知的导频序列,也就是说在导频位置上的 X是已知的。 这样就可以通过 y = x*h, 计算得出 h, 也就是信道信息。
信道信息获得单元 12获取信道信息之后, 可以保存在存储单元 13中, 存储单元 13可以是硬盘等各种存储介质。
如果无线网络中的其他网络设备检测到用户终端发送或接收出现异常, 则可以通过存储单元 13中存储的信道信息来再现无线信道环境。例如: 可以 采用 间交替最大期望算法 SAGE ( Space-alternating Generalized Expectation-maximization; SAGE )等算法对信道信息进行估计, 得到无线 信道环境的各种参数, 从而再现无线信道的环境状况。
本实施例提供的无线信道环境信息获取装置,接收终端发送的无线信号, 通过接收的无线信号计算并保存信道信息,以便用户终端或网络出现异常时, 能够准确反应无线信道的真实情况, 进而可以提高对用户终端或网络的异常 情况定位的准确性, 提高异常情况的处理效率。
图 6为本发明提供的无线信道环境信息获取装置第二实施例的结构示意 图, 如图 6所示, 该装置包括: 获得单元 11、 信道信息获得单元 12和存储 单元 13;
在前一实施例的基础上, 信道信息获得单元 12可以具体用于:
从获得单元 11接收的无线信号中获取导频信息;
根据导频信息获取无线信号中导频对应的信道信息;
相应的, 存储单元 13具体用于: 导频对应的信道信息。
具体的, 获得单元 11接收到终端发送的无线信号 y后, 信道信息获得单 元 12可以从无线的固定位置(即子载波)上得到导频信息 X, 由于导频信息 X 为终端发送的实际信号, 而无线信道环境信息获取装置接收到的实际信号 即为获得单元 11接收到的无线信号 y。 由于 y=H*x, 其中 H即为信道信息, 在一个始实例中, 信道信息可以为信道冲击响应, 通常以矩阵的形式表示。 因此, 信道信息获得单元 12可以根据 y=H*x计算出信道信息 H。 y=H*x只考虑了终端发送的导频信号 X对信道信息。 而作为另外一种可 行的实施方式, 信道信息获得单元 12还可以具体用于:
从获得单元 11接收的无线信号中获取导频信息;
根据导频信息获取无线信号中导频对应的信道信息;
根据导频对应的信道信息获取无线信号中数据对应的信道信息; 相应的, 存储单元 13具体用于: 存储信道信息获得单元 12获取的导频 对应的信道信息和数据对应的信道信息。
具体的,在信道信息获得单元 12获取到发送信号中的导频对信道信息之 后, 从而图 5中可以看出, 在一个 tile上的符号 0上, 由于导频信号映射到 第一个和第四个子载波上, 而第二个和第三个子载波上映射的是终端发送的 业务数据, 因此, 可以分别获取第一个子载波和第四个子载波上的导频信号 对应信道的冲击响应 H1和 H2, 然后对 H1和 H2进行插值计算, 获得业务 数据对信道的冲击响应。
由于信道信息获得单元 12 最终获得的是终端发射的导频信号对信道的 冲击响应以及终端发射的业务数据对信道的冲击响应, 因此, 更能够真实反 映无线信道的环境状况, 从而提高对用户终端或网络的异常情况定位的准确 性, 提高异常情况的处理效率。
进一步的, 该无线信道环境信息获取装置, 还可以包括:
计算单元 14, 用于根据信道信息获得单元 12获取的信道信息估计无线
Figure imgf000009_0001
信道信息反映了无线信道的环境情况, 在此基础上, 还可以通过 SAGE 等算法对信道信息进行估计, 获得各种无线信道的环境参数, 从而实现全面 再现无线信道的环境状况。
另外, 由于存储单元 13为硬盘等存储介质, 而存储介质的存储空间是有 限的, 为了充分利用存储单元 13的存储空间, 避免存储单元 13已满而无法 单元 13存储的信道信息进行更新。存储单元 13的存储数据达到一定数值时, 可以删除最先保存的信道信息,从而能够不断地对存储单元 13存储的信息进 行更新, 以便及时再现无线系统的环境状况。
图 7为本发明提供的无线网络控制设备第一实施例的结构示意图, 如图 7所示, 该无线网络控制设备可以是 RNC或演进型基站( evolved Node B; eNB ) , 包括: 无线信道环境信息获取装置 1和网络维护操作中心 2;
其中, 无线信道环境信息获取装置 1用于: 获得终端发送的无线信号, 从所述无线信号中获取导频信息, 根据导频信息计算信道信息, 并对所述信 道信息进行记录;
网络维护操作中心 2, 用于从无线信道环境信息获取装置 1 中获取所述 信道信息, 以对网络异常进行定位。
该无线网络控制设备包括本发明实施例提供的无线信道环境信息获取装 置 1。 其中, 无线信道环境信息获取装置 1 的具体结构可参见前述实施例, 不再赘述。
当 RNC或 eNB检测到终端接收或发送异常时, 网络维护操作中心 2可 以从无线信道环境信息获取装置 1 的存储单元中获取保存的信道信息, 以实 现对异常情况进行定位, 再现无线信道的真实情况。
本实施例提供的无线网络控制设备, 接收终端发送的无线信号, 通过接 收的无线信号计算并保存信道信息, 以便用户终端或网络出现异常时, 能够 准确反应无线信道的真实情况, 进而可以提高对用户终端或网络的异常情况 定位的准确性, 提高异常情况的处理效率。
图 8为本发明提供的无线信道环境信息获取方法第一实施例的流程图, 如图 8所示, 该方法包括:
S101、 获得终端发送的无线信号;
S102、 从无线信号中获取导频信息, 并根据导频信息计算信道信息;
S103、 对信道信息进行记录。 在此基础上, S102从无线信号中获取导频信息, 并根据导频信息计算信 道信息可以具体包括:
从无线信号中获取导频信息;
根据导频信息获取无线信号中导频对应的信道信息。
作为另一种可行的实施方式, S102从无线信号中获取导频信息, 并根据 导频信息计算信道信息还可以包括:
从无线信号中获取导频信息;
根据导频信息获取无线信号中导频对应的信道信息;
根据导频对应的信道信息获取无线信号中数据对应的信道信息。
进一步的, 在 S102获取信道信息之后, 还可以通过 SAGE等算法对信 道信息进行估计, 获得各种无线信道的环境参数, 从而实现全面再现无线信 道的环境状况。
进一步的, S103中可以将信道信息存储在硬盘等存储介质上, 而存储介 质的存储空间是有限的, 为了充分利用存储介质的存储空间, 避免存储介质 已满而无法记录新的信道信息的情况。 可以采用先进先出的方法对信道信息 进行更新, 以便及时再现无线系统的环境状况。
本发明提供的无线信道环境信息获取方法实施例与本发明提供的无线信 道环境信息获取装置实施例相对应, 该方法实现的详细过程可参见无线信道 环境信息获取装置的实施例, 不再赘述。
本实施例提供的无线信道环境信息获取方法,接收终端发送的无线信号, 通过接收的无线信号计算并保存信道信息,以便用户终端或网络出现异常时, 能够准确反应无线信道的真实情况, 进而可以提高对用户终端或网络的异常 情况定位的准确性, 提高异常情况的处理效率。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于 一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施 例的流程。 其中, 所述的存储介质可为磁碟、 光盘、 只读存储记忆体
( Read-Only Memory, ROM )或随机存者 i己忆体( Random Access Memory, RAM )等。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或 者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要求
1、 一种无线信道环境信息获取装置, 其特征在于, 包括:
获得单元, 用于获得终端发送的无线信号;
信道信息获得单元, 用于从所述无线信号中获取导频信息, 并根据导频 信息计算信道信息;
存储单元, 用于对所述信道信息进行记录。
2、 根据权利要求 1所述的无线信道环境信息获取装置, 其特征在于, 所 述信道信息获得单元具体用于:
从所述无线信号中获取导频信息; 根据所述导频信息获取所述无线信号 中导频对应的信道信息;
所述存储单元具体用于: 存储所述导频对应的信道信息。
3、 根据权利要求 1所述的无线信道环境信息获取装置, 其特征在于, 所 述信道信息获得单元具体用于: 从所述无线信号中获取导频信息; 根据所述 导频信息获取所述无线信号中导频对应的信道信息; 根据所述导频对应的信 道信息获取所述无线信号中数据对应的信道信息;
所述存储单元具体用于: 存储所述导频对应的信道信息和所述数据对应 的信道信息。
4、根据权利要求 1-3任一项所述的无线信道环境信息获取装置, 其特征 在于, 还包括:
计算单元, 用于根据所述信道信息获得单元获取的信道信息估计无线信
5、 根据权利要求 4所述的无线信道环境信息获取装置, 其特征在于, 还 包括:
更新单元, 用于若所述存储单元的存储容量达到门限值, 则采用先进先 出方法对存储的信道信息进行更新。
6、 一种无线信道环境信息获取方法, 其特征在于, 包括: 获得终端发送的无线信号;
从所述无线信号中获取导频信息, 并根据导频信息计算信道信息; 对所述信道信息进行记录。
7、 根据权利要求 6所述的方法, 其特征在于, 所述从所述无线信号中获 取导频信息, 并根据导频信息计算信道信息具体为:
从所述无线信号中获取导频信息;
根据所述导频信息获取所述无线信号中导频对应的信道信息。
8、 根据权利要求 6所述的方法, 其特征在于, 所述从所述无线信号中获 取导频信息, 并根据导频信息计算信道信息具体为:
从所述无线信号中获取导频信息;
根据所述导频信息获取所述无线信号中导频对应的信道信息;
根据所述导频对应的信道信息获取所述无线信号中数据对应的信道信 自
9、 根据权利要求 6-8任一项所述的方法, 其特征在于, 还包括: 根据所述信道信息估计无线信道的环境参数。
10、 根据权利要求 6-8任一项所述的方法, 其特征在于, 还包括: 采用先进先出方法对记录的信道信息进行更新。
11、 一种无线网络控制设备, 其特征在于, 包括: 无线信道环境信息获 取装置和网络维护操作中心;
所述无线信道环境信息获取装置用于: 获得终端发送的无线信号, 从所 述无线信号中获取导频信息, 根据导频信息计算信道信息, 并对所述信道信 息进行记录;
网络维护操作中心, 用于从所述无线信道环境信息获取装置中获取所述 信道信息, 以对网络异常进行定位。
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