WO2012051866A1 - Detection method and apparatus for radio frequency channel in worldwide interoperability for microwave access system - Google Patents
Detection method and apparatus for radio frequency channel in worldwide interoperability for microwave access system Download PDFInfo
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- WO2012051866A1 WO2012051866A1 PCT/CN2011/075950 CN2011075950W WO2012051866A1 WO 2012051866 A1 WO2012051866 A1 WO 2012051866A1 CN 2011075950 W CN2011075950 W CN 2011075950W WO 2012051866 A1 WO2012051866 A1 WO 2012051866A1
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- power
- radio frequency
- baseband
- gain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
- H04B17/18—Monitoring during normal operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
- H04B17/17—Detection of non-compliance or faulty performance, e.g. response deviations
Definitions
- the present invention relates to the field of communications, and in particular to a radio channel for a Worldwide Interoperability for Microwave Access (Wimax) system. Detection method and device.
- Wimax Worldwide Interoperability for Microwave Access
- each RF channel of the RRU needs to be monitored to prevent an abnormality and the transmission power of the entire RRU is abnormal, thereby affecting user access.
- RF channel gain is an important RF performance parameter for RRU, which is often used to characterize whether the RF channel is normal.
- the RF channel is a very stable fixed value, but as the temperature changes, the gain of the RF channel may change, so that the signal output by the RRU will also change.
- the direct effect is the distance and quality covered by the RRU output signal.
- the baseband signal input to the RRU includes two parts, a preamble signal and a date signal, wherein the pilot preamble signal is stable, does not change over time on the time axis, and the RF channel gain is also fixed, thus If the RF channel is normal, then after the preamble signal is amplified by the channel gain, the output signal at the antenna feed port should also be fixed.
- the main method for detecting whether the RF channel is normal is to detect the feedback Preamble power of the read channel at the antenna feed port. If the power is too small, it indicates that there is a problem with the RF channel, and a low power alarm is reported.
- the baseband can only transmit Preamble signals on one channel, typically on the smallest channel that is enabled. On other channels without a Preamble signal, it cannot be monitored by reading the channel's feedback Preamble power. It can be seen that in the existing technology, it is impossible to detect and monitor a channel other than the channel that transmits the pilot signal, so that when an abnormality occurs in the channel, timely processing cannot be performed, which will affect user access.
- SUMMARY OF THE INVENTION The present invention has been made in view of the problem in the prior art that it is impossible to detect and monitor a channel other than a channel for transmitting a pilot signal.
- the main object of the present invention is to provide a radio frequency in a global microwave interconnection access system.
- a method for detecting a radio frequency channel in a global microwave interconnection access system including: acquiring baseband power input and output feedback power of a radio frequency channel; The feedback power is calculated to obtain the channel gain of the radio frequency channel; whether the radio frequency channel is abnormal is determined by comparing the channel gain with a preset standard channel gain.
- the step of obtaining the baseband power and the output feedback power of the RF channel input includes: simultaneously performing a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N ⁇ 4, every two The second time interval is greater than the time difference between the signal of the baseband power and the signal of the output power of the output; if the data obtained by the two consecutive samples in the N times is the same, the above two samples are The baseband power in the data obtained in one of the samples is taken as the baseband power of the obtained RF channel input, and the feedback power in the data obtained by the above-mentioned one of the above two samples is taken as the obtained RF The feedback power of the channel output.
- the radio frequency channel includes at least one of the following: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal.
- the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power described above comprises: setting an absolute value of a difference between the baseband power and the feedback power as a channel gain of the radio frequency channel.
- the step of determining whether the radio frequency channel is abnormal by comparing the channel gain with the preset standard channel gain comprises: comparing the channel gain with the preset standard channel gain; if the channel gain and the preset standard channel are If the absolute value of the difference between the gains is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; otherwise, the radio frequency channel is determined to be normal.
- the steps of obtaining the baseband power of the RF channel input and the feedback power of the output include: obtaining the baseband power of the RF channel input and the feedback power of the output at a predetermined cycle.
- a device for detecting a radio frequency channel in a global microwave interconnection access system includes: an acquisition unit configured to acquire baseband power and output feedback power of an RF channel input The calculating unit is configured to calculate a channel gain of the radio frequency channel by using the baseband power and the feedback power, and the determining unit is configured to determine whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain.
- the acquiring unit includes: a sampling module configured to simultaneously perform a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N>4, every two sampling time intervals a time difference between a signal greater than the baseband power and a signal of the output feedback power; and a setting module configured to: when the data obtained by the two consecutive samples in the N times is the same, the two samples are The baseband power in the data obtained in one sample is used as the baseband power of the obtained RF channel input, and the feedback power in the data obtained from one of the above two samples is used as the obtained RF channel output. Feedback power.
- the determining unit includes: a comparing module configured to compare the channel gain with the preset standard channel gain; and the determining module is set to an absolute value of a difference between the channel gain and the preset standard channel gain When the threshold value is greater than the predetermined threshold, it is determined that the radio frequency channel is abnormal. When the absolute value of the difference between the channel gain and the preset standard channel gain is less than or equal to the predetermined threshold, it is determined that the radio frequency channel is normal.
- the channel gain of the radio frequency channel is calculated by the baseband power and the feedback power, so that the detection and monitoring of the channel other than the channel for transmitting the pilot signal can be realized, and the prior art is solved.
- FIG. 1 is a preferred flowchart of a method for detecting a radio frequency channel in a global microwave interconnection access system according to an embodiment of the present invention
- FIG. 2 is a diagram for power sampling according to an embodiment of the present invention
- FIG. 3 is a preferred schematic diagram of a power sampling point according to an embodiment of the present invention
- FIG. 4 is another preferred flowchart of radio frequency channel detection according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a device for detecting a radio frequency channel in a global microwave interconnection system according to an embodiment of the present invention.
- FIG. 1 is a preferred flowchart of a method for detecting a radio frequency channel in a global microwave interconnection access system according to an embodiment of the present invention, which includes the following steps:
- S102 obtaining baseband power of the RF channel input and feedback power of the output
- S104 calculating a channel gain of the RF channel by using the baseband power and the feedback power
- the channel gain of the radio frequency channel is calculated by using the baseband power and the feedback power, so that detection and monitoring of channels other than the channel for transmitting the pilot signal can be implemented, and the current solution is solved.
- the step of acquiring the baseband power input and the output feedback power of the radio frequency channel comprises: simultaneously performing a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N > 4 , the time interval between each two samples is greater than the time difference between the signal of the baseband power and the signal of the feedback power of the output; if the data is obtained twice consecutively in the N samples Similarly, the baseband power in the data obtained from one of the two samples is taken as the baseband power of the obtained RF channel input, and the obtained one of the two samples is obtained. The feedback power in the data is used as the feedback power of the obtained RF channel output.
- the power of the feedback power and the baseband power of the current set are the same frame (the same time) by the N times of the sampling mode, so that the gain of the RF channel can be accurately obtained.
- N 4
- the sampling process and subsequent processing can be simplified while the RF channel gain is accurately obtained, and the sampling time is saved.
- the total time of the N times is less than or equal to the length of the M data frames, and M ⁇ 2.
- the radio frequency channel comprises at least one of: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal.
- the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power comprises: setting an absolute value of a difference between the baseband power and the feedback power as the radio frequency channel Channel gain.
- the calculation of the channel gain can be achieved.
- the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power may further include: setting a difference obtained by subtracting the baseband power from the feedback power to a channel gain of the radio frequency channel.
- the step of determining whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain comprises: comparing the channel gain with the preset standard channel gain; If the absolute value of the difference between the gain and the preset standard channel gain is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; otherwise, the radio frequency channel is determined to be normal. With the preferred embodiment, it is possible to effectively detect whether an abnormality occurs in the radio frequency channel.
- the step of obtaining the baseband power of the RF channel input and the feedback power of the output comprises: acquiring the baseband power of the RF channel input and the feedback power of the output at a predetermined period. With the preferred embodiment, the required baseband power and feedback power can be repeatedly acquired.
- FIG. 2 is a schematic structural diagram for power sampling according to an embodiment of the present invention, which includes: a radio frequency control board (TRX) 202, a power amplifier (PA) 204, and a radio frequency filter transmitting unit (RFE). And a digital predistortion system (DPD) 208, wherein the DPD system 208 is configured to collect baseband power and feedback power.
- TRX radio frequency control board
- PA power amplifier
- RFE radio frequency filter transmitting unit
- DPD digital predistortion system
- the gain on the channel is the output power minus the input power, ie the feedback power minus the baseband power.
- the baseband signal includes a preamble signal and a date signal, the preamble signal is fixed-size and exists only on the path of the minimum channel number; and the date signal exists on all channels in the presence of traffic, but with the service The change in traffic, the size of the date signal is suddenly large and small. In this way, after the amplification of the RF link, the feedback signal also changes with the change of the date signal in the baseband.
- the core of the channel gain is obtained by the power of the same set of frames (the same time).
- the baseband power must be obtained.
- the waveform of the signal is the waveform of the feedback power.
- the two waveforms are completely aligned in time, so that the difference between the two powers can be accurately obtained, so that the gain of the channel can be accurately obtained. Therefore, in the channel without the preamble signal, the gain of the channel can be obtained by acquiring the baseband power and feedback power of the same frame date signal, and the key to the technical implementation is to ensure that the obtained baseband power and feedback power are Signals belonging to the same frame. If it is not the signal power of the same frame, then the channel gain value calculated accordingly is meaningless.
- the WIMAX signal frame is a 5ms frame.
- the DPD (Data Pre-Distortion) system on the RRU always collects the baseband power and feedback power, and writes the collected signal power values into the registers, thus the registers.
- the baseband signal power value and the feedback power value are updated in a period of 5 ms.
- the distribution of the baseband signal and the feedback signal on the time axis is shown in Figure 3.
- the preferred embodiment uses four consecutive samples.
- the time of the four samples follows the following rules: 1. The total time of four samples The length does not exceed two frames; 2. Each time interval is greater than the time difference t between the baseband signal and the feedback signal. In this way, the baseband signal and the feedback signal of the two consecutive samples are exactly the same.
- the same sample value of the same two consecutive samples is the sample value of the same frame signal, thus obtaining the same frame signal.
- the baseband power value and the feedback power value can accurately calculate the gain of the channel. In Fig.
- the sample points c and d are effective values that meet the above requirements.
- four consecutive sampling methods are used, which is merely an example, and the present invention is not limited thereto, and for example, six or eight consecutive sampling methods may be employed.
- the channel gain is calculated, it can be compared with the gain standard value of the channel to know whether the RF channel is normal.
- the purpose of monitoring the state of the entire RF channel is achieved by monitoring the gain value of the RF channel. The following describes the detection process of the entire RF channel.
- FIG. 4 is another preferred flow chart of the RF channel detection according to the embodiment of the present invention, which includes the following steps:
- S402 RRU period detection base signal power and feedback power of the date signal, each time the collection is used four times; S404, extracting the data of the same two sets of data in the four samples as the reliable sample;
- FIG. 5 is a schematic structural diagram of a device for detecting a radio frequency channel in a global microwave interconnection system according to an embodiment of the present invention, which includes: an acquisition unit 502, configured to acquire baseband power and output of an RF channel input.
- the feedback unit 504 is connected to the obtaining unit 502, configured to calculate the channel gain of the radio frequency channel by using the baseband power and the feedback power; and the determining unit 506 is connected to the calculating unit 504 for comparing The channel gain and a preset standard channel gain are used to determine whether the RF channel is abnormal.
- the channel gain of the radio frequency channel is calculated by using the baseband power and the feedback power, so that detection and monitoring of channels other than the channel for transmitting the pilot signal can be implemented, and the current solution is solved.
- the obtaining unit 502 includes: a sampling module, configured to simultaneously perform a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N ⁇ 4, each The time interval between the two samples is greater than the time difference between the signal of the baseband power and the signal of the feedback power of the output; a setting module, which is used for data obtained twice consecutively in the N samples.
- the baseband power in the data obtained from one of the two samples is taken as the baseband power of the obtained RF channel input, and the obtained one of the two samples is obtained.
- the feedback power in the data is used as the feedback power of the obtained RF channel output.
- the feedback power and the baseband power of the set are the same frame by the continuous N times of sampling.
- the radio frequency channel comprises at least one of: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal.
- monitoring of the RF channel without the Preamble signal can be achieved.
- the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power comprises: setting an absolute value of a difference between the baseband power and the feedback power as the radio frequency channel Channel gain.
- the calculation of the channel gain can be achieved.
- the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power may further include: setting a difference obtained by subtracting the baseband power from the feedback power to the radio frequency channel Channel gain.
- the determining unit 506 includes: a comparing module, configured to compare the channel gain with the preset standard channel gain; and a determining module, configured to use the channel gain and the preset standard channel
- a comparing module configured to compare the channel gain with the preset standard channel gain
- a determining module configured to use the channel gain and the preset standard channel
- the acquiring unit 502 acquires the baseband power input by the radio frequency channel and the feedback power of the output, and comprises: acquiring the baseband power of the radio frequency channel input and the feedback power of the output at a predetermined period.
- the required baseband power and feedback power can be repeatedly acquired.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be executed by a computing device This can be implemented, and thus, they can be stored in a storage device by a computing device, or they can be fabricated into individual integrated circuit modules, or a plurality of modules or steps can be implemented as a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
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Abstract
A detection method and apparatus for a radio frequency (RF) channel in a Worldwide Interoperability for Microwave Access (Wimax) system are disclosed in the present invention. The method includes: acquiring a base band power of an RF channel input and a feedback power of an RF channel output; calculating a channel gain of the RF channel based on the base band power and the feedback power; judging whether abnormity occurs with the RF channel by comparing the channel gain with a preset standard channel gain. The problem that the channels except for the channel for transmitting pilot frequency signals can not be detected and monitored in the prior art is solved with the invention, the user access is ensured not to be influenced.
Description
全 ί求微波互联接入系统中射频通道的检测方法和装置 技术领域 本发明涉及通信领域， 具体而言， 涉及一种全球微波互联接入（Worldwide Interoperability for Microwave Access, Wimax ) 系统中射频通道的检测方法和 装置。 背景技术 在 Wimax系统中，需要对 RRU(Remote Radio Unit, 远端射频单元）的每个 射频通道进行监控， 以便防止出现异常而导致整个 RRU 的发射功率异常， 从 而影响用户的接入。 射频通道增益是 RRU—个很重要的射频性能参数， 常常 用该参数来表征射频通道是否正常。一般情况下，射频通道是很稳定的固定值， 但是随着温度的变化， 射频通道增益可能会发生变化， 这样 RRU输出的信号 也会发生变化， 直接的影响就是 RRU输出信号覆盖的距离和质量不稳定， 从 而导致影响用户的接入。 输入 RRU的基带信号包括两部分， preamble (导频） 信号和 date (数据）信号， 其中导频 preamble信号很稳定， 在时间轴上不随时 间的变化而变化， 而射频通道增益也是固定的， 因此如果射频通道是正常的， 那么 preamble信号经过通道增益放大后，在天馈口处输出信号也应该是固定不 变的。 目前检测射频通道是否正常的主要方法就是在天馈口处通过检测读取到 的通道的反馈 Preamble功率， 如果功率过小， 表明该射频通道存在问题， 就会 上报低功率告警。 但是如果系统不使能 CDD (循环延迟分集)功能， 基带只能在 一个通道上发送 Preamble 信号， 一般是在使能的最小的通道上。 而其它没有 Preamble信号的通道上，就不能通过读取通道的反馈 Preamble功率的方法来监 控。 可见， 在现有的技术中， 无法对除发送导频信号的通道之外的通道进行检 测监控， 从而在该通道发生异常时， 无法进行及时地处理， 将影响用户的接入。 发明内容 针对现有技术中无法对除发送导频信号的通道之外的通道进行检测监控 的问题而提出本发明， 为此， 本发明的主要目的在于提供一种全球微波互联接 入系统中射频通道的检测方法和装置， 以解决上述问题至少之一。
为了实现上述目的， 根据本发明的一个方面， 提供了一种全球微波互联接 入系统中射频通道的检测方法， 其包括： 获取射频通道输入的基带功率和输出 的反馈功率； 通过上述基带功率和上述反馈功率计算得到上述射频通道的通道 增益； 通过比较上述通道增益与预设的标准通道增益来判断上述射频通道是否 出现异常。 上述获取射频通道输入的基带功率和输出的反馈功率的步骤包括： 同时对 上述输入的基带功率的信号以及上述输出的反馈功率的信号进行连续的 N 次 釆样， 其中， N≥4 , 每两次釆样的时间间隔大于上述基带功率的信号与上述输 出的反馈功率的信号之间的时间差；若上述 N次釆样中连续两次所釆样得到的 数据相同， 则将上述两次釆样中的一次釆样所得到的数据中的基带功率作为所 获得的射频通道输入的基带功率， 并将上述两次釆样中的上述一次釆样所得到 的数据中的反馈功率作为所获得的射频通道输出的反馈功率。 上述 N次釆样的总时间小于等于 M个数据帧的长度， M≥ 2。 上述射频通道包括以下至少之一： 发送用户数据信号的射频通道、 发送导 频信号的射频通道。 通过上述基带功率和上述反馈功率计算得到上述射频通道的通道增益的 步骤包括： 将上述基带功率与上述反馈功率之间的差值的绝对值设置为上述射 频通道的通道增益。 通过比较上述通道增益与预设的标准通道增益来判断上述射频通道是否 出现异常的步骤包括： 将上述通道增益与上述预设的标准通道增益进行比较； 若上述通道增益与上述预设的标准通道增益之间的差值的绝对值大于预定的 阈值， 则判断出上述射频通道出现异常； 否则， 则判断出上述射频通道正常。 获取射频通道输入的基带功率和输出的反馈功率的步骤包括： 以预定的周 期获取上述射频通道输入的基带功率和输出的反馈功率。 为了实现上述目的， 根据本发明的另一方面， 提供了一种全球微波互联接 入系统中射频通道的检测装置， 其包括： 获取单元， 设置为获取射频通道输入 的基带功率和输出的反馈功率； 计算单元， 设置为通过上述基带功率和上述反 馈功率计算得到上述射频通道的通道增益； 判断单元， 设置为通过比较上述通 道增益与预设的标准通道增益来判断上述射频通道是否出现异常。
上述获取单元包括： 釆样模块， 设置为同时对上述输入的基带功率的信号 以及上述输出的反馈功率的信号进行连续的 N次釆样， 其中， N > 4 , 每两次 釆样的时间间隔大于上述基带功率的信号与上述输出的反馈功率的信号之间 的时间差； 设置模块， 设置为在上述 N次釆样中连续两次所釆样得到的数据相 同时， 将上述两次釆样中的一次釆样所得到的数据中的基带功率作为所获得的 射频通道输入的基带功率， 并将上述两次釆样中的一次釆样所得到的数据中的 反馈功率作为所获得的射频通道输出的反馈功率。 上述判断单元包括： 比较模块， 设置为将上述通道增益与上述预设的标准 通道增益进行比较； 判断模块， 设置为在上述通道增益与上述预设的标准通道 增益之间的差值的绝对值大于预定的阈值时， 判断出上述射频通道出现异常； 在上述通道增益与上述预设的标准通道增益之间的差值的绝对值小于等于上 述预定的阈值时， 判断出上述射频通道正常。 在本发明中， 通过所述基带功率和所述反馈功率计算得到所述射频通道的 通道增益， 从而可以实现对除发送导频信号的通道之外的通道进行检测监控， 解决了现有技术中无法对无 Preamble信号的射频通道进行监控的问题，进而保 证了用户的接入不受影响。 本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从说明 书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其他优点可 通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实现和获 得。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不 当限定。 在附图中： 图 1是根据本发明实施例的全球微波互联接入系统中射频通道的检测方法 的一种优选的流程图； 图 2是 居本发明实施例的用于功率釆样的一种优选的结构图； 图 3是 居本发明实施例的功率釆样点的一种优选的示意图； 图 4是 居本发明实施例的射频通道检测的另一种优选的流程图；
图 5是根据本发明实施例的全球微波互联接入系统中射频通道的检测装置 的一种优选的结构图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是， 在不 冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 图 1是根据本发明实施例的全球微波互联接入系统中射频通道的检测方法 的一种优选的流程图， 其包括如下步骤： TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a radio channel for a Worldwide Interoperability for Microwave Access (Wimax) system. Detection method and device. In the Wimax system, each RF channel of the RRU (Remote Radio Unit) needs to be monitored to prevent an abnormality and the transmission power of the entire RRU is abnormal, thereby affecting user access. RF channel gain is an important RF performance parameter for RRU, which is often used to characterize whether the RF channel is normal. In general, the RF channel is a very stable fixed value, but as the temperature changes, the gain of the RF channel may change, so that the signal output by the RRU will also change. The direct effect is the distance and quality covered by the RRU output signal. Unstable, resulting in access to users. The baseband signal input to the RRU includes two parts, a preamble signal and a date signal, wherein the pilot preamble signal is stable, does not change over time on the time axis, and the RF channel gain is also fixed, thus If the RF channel is normal, then after the preamble signal is amplified by the channel gain, the output signal at the antenna feed port should also be fixed. At present, the main method for detecting whether the RF channel is normal is to detect the feedback Preamble power of the read channel at the antenna feed port. If the power is too small, it indicates that there is a problem with the RF channel, and a low power alarm is reported. However, if the system does not enable CDD (Cyclic Delay Diversity), the baseband can only transmit Preamble signals on one channel, typically on the smallest channel that is enabled. On other channels without a Preamble signal, it cannot be monitored by reading the channel's feedback Preamble power. It can be seen that in the existing technology, it is impossible to detect and monitor a channel other than the channel that transmits the pilot signal, so that when an abnormality occurs in the channel, timely processing cannot be performed, which will affect user access. SUMMARY OF THE INVENTION The present invention has been made in view of the problem in the prior art that it is impossible to detect and monitor a channel other than a channel for transmitting a pilot signal. To this end, the main object of the present invention is to provide a radio frequency in a global microwave interconnection access system. A method and apparatus for detecting a channel to solve at least one of the above problems. In order to achieve the above object, according to an aspect of the present invention, a method for detecting a radio frequency channel in a global microwave interconnection access system is provided, including: acquiring baseband power input and output feedback power of a radio frequency channel; The feedback power is calculated to obtain the channel gain of the radio frequency channel; whether the radio frequency channel is abnormal is determined by comparing the channel gain with a preset standard channel gain. The step of obtaining the baseband power and the output feedback power of the RF channel input includes: simultaneously performing a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N≥4, every two The second time interval is greater than the time difference between the signal of the baseband power and the signal of the output power of the output; if the data obtained by the two consecutive samples in the N times is the same, the above two samples are The baseband power in the data obtained in one of the samples is taken as the baseband power of the obtained RF channel input, and the feedback power in the data obtained by the above-mentioned one of the above two samples is taken as the obtained RF The feedback power of the channel output. The total time of the above N times is less than or equal to the length of M data frames, and M ≥ 2. The radio frequency channel includes at least one of the following: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal. The step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power described above comprises: setting an absolute value of a difference between the baseband power and the feedback power as a channel gain of the radio frequency channel. The step of determining whether the radio frequency channel is abnormal by comparing the channel gain with the preset standard channel gain comprises: comparing the channel gain with the preset standard channel gain; if the channel gain and the preset standard channel are If the absolute value of the difference between the gains is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; otherwise, the radio frequency channel is determined to be normal. The steps of obtaining the baseband power of the RF channel input and the feedback power of the output include: obtaining the baseband power of the RF channel input and the feedback power of the output at a predetermined cycle. In order to achieve the above object, according to another aspect of the present invention, a device for detecting a radio frequency channel in a global microwave interconnection access system includes: an acquisition unit configured to acquire baseband power and output feedback power of an RF channel input The calculating unit is configured to calculate a channel gain of the radio frequency channel by using the baseband power and the feedback power, and the determining unit is configured to determine whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain. The acquiring unit includes: a sampling module configured to simultaneously perform a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N>4, every two sampling time intervals a time difference between a signal greater than the baseband power and a signal of the output feedback power; and a setting module configured to: when the data obtained by the two consecutive samples in the N times is the same, the two samples are The baseband power in the data obtained in one sample is used as the baseband power of the obtained RF channel input, and the feedback power in the data obtained from one of the above two samples is used as the obtained RF channel output. Feedback power. The determining unit includes: a comparing module configured to compare the channel gain with the preset standard channel gain; and the determining module is set to an absolute value of a difference between the channel gain and the preset standard channel gain When the threshold value is greater than the predetermined threshold, it is determined that the radio frequency channel is abnormal. When the absolute value of the difference between the channel gain and the preset standard channel gain is less than or equal to the predetermined threshold, it is determined that the radio frequency channel is normal. In the present invention, the channel gain of the radio frequency channel is calculated by the baseband power and the feedback power, so that the detection and monitoring of the channel other than the channel for transmitting the pilot signal can be realized, and the prior art is solved. The problem of monitoring the RF channel without Preamble signal can not be ensured, thus ensuring that the user's access is not affected. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a preferred flowchart of a method for detecting a radio frequency channel in a global microwave interconnection access system according to an embodiment of the present invention; FIG. 2 is a diagram for power sampling according to an embodiment of the present invention; FIG. 3 is a preferred schematic diagram of a power sampling point according to an embodiment of the present invention; FIG. 4 is another preferred flowchart of radio frequency channel detection according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of a device for detecting a radio frequency channel in a global microwave interconnection system according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Embodiment 1 FIG. 1 is a preferred flowchart of a method for detecting a radio frequency channel in a global microwave interconnection access system according to an embodiment of the present invention, which includes the following steps:
S 102 , 获取射频通道输入的基带功率和输出的反馈功率； S 104 , 通过上述基带功率和上述反馈功率计算得到上述射频通道的通道增 益； S102, obtaining baseband power of the RF channel input and feedback power of the output; S104, calculating a channel gain of the RF channel by using the baseband power and the feedback power;
S 106 , 通过比较上述通道增益与预设的标准通道增益来判断上述射频通道 是否出现异常。 在本优选的实施例中， 通过所述基带功率和所述反馈功率计算得到所述射 频通道的通道增益， 从而可以实现对除发送导频信号的通道之外的通道进行检 测监控， 解决了现有技术中无法对无 Preamble 信号的射频通道进行监控的问 题， 进而保证了用户的接入不受影响。 优选的， 所述获取射频通道输入的基带功率和输出的反馈功率的步骤包 括： 同时对所述输入的基带功率的信号以及所述输出的反馈功率的信号进行连 续的 N次釆样， 其中， N > 4 , 每两次釆样的时间间隔大于所述基带功率的信 号与所述输出的反馈功率的信号之间的时间差；若所述 N次釆样中连续两次所 釆样得到的数据相同， 则将所述两次釆样中的一次釆样所得到的数据中的基带 功率作为所获得的射频通道输入的基带功率， 并将所述两次釆样中的一次釆样 所得到的数据中的反馈功率作为所获得的射频通道输出的反馈功率。 在本优选 的实施例中， 通过连续 N次的釆样方式， 可以保证釆集的反馈功率和基带功率 为同一帧（同一时刻）的功率， 从而能够精确地得到射频通道的增益。 特别地， 当 N=4时， 可以在精确获取射频通道增益的同时， 简化了釆样过程以及后续处 理过程， 并节省了釆样时间。
优选的， 所述 N次釆样的总时间小于等于 M个数据帧的长度， M≥2。 在 本优选的实施例中， 通过设置 N次釆样的总时间， 可以有效地提高釆样效率， 节省釆样时间。 优选的，所述射频通道包括以下至少之一：发送用户数据信号的射频通道、 发送导频信号的射频通道。 通过本优选的实施例， 可以实现对无 Preamble信号 的射频通道进行监控。 优选的， 通过所述基带功率和所述反馈功率计算得到所述射频通道的通道 增益的步骤包括： 将所述基带功率与所述反馈功率之间的差值的绝对值设置为 所述射频通道的通道增益。通过本优选的实施例，可以实现对通道增益的计算。 优选的， 通过所述基带功率和所述反馈功率计算得到所述射频通道的通道增益 的步骤还可以包括： 将上述反馈功率减去上述基带功率所得到的差值设置为射 频通道的通道增益。 优选的， 通过比较所述通道增益与预设的标准通道增益来判断所述射频通 道是否出现异常的步骤包括： 将所述通道增益与所述预设的标准通道增益进行 比较； 若所述通道增益与所述预设的标准通道增益之间的差值的绝对值大于预 定的阈值， 则判断出所述射频通道出现异常； 否则， 则判断出所述射频通道正 常。 通过本优选的实施例， 可以有效地检测出射频通道是否出现异常。 优选的， 获取射频通道输入的基带功率和输出的反馈功率的步骤包括： 以 预定的周期获取所述射频通道输入的基带功率和输出的反馈功率。 通过本优选 的实施例， 可以重复获取所需的基带功率和反馈功率。 实施例 2 图 2是 居本发明实施例的用于功率釆样的一种优选的结构图， 其包括： 射频控制单板 ( TRX ) 202、 功率放大器（PA ) 204、 射频滤波发射单元（ RFE ) 206以及数字预失真系统 （DPD ) 208, 其中， DPD 系统 208用于釆集基带功 率和反馈功率。 当整个射频通道是正常的情况下， 它的增益也是一定的， 所以当输入的基 带功率一定时， 输出的反馈功率也是一定的， 如果反馈功率过小， 说明射频通 道存在异常。 也即是， 如果整个射频通道的增益正常， 输出的反馈功率也是正 常的， 所以可以通过计算出整个射频通道的增益来判断射频通道是否正常。
通道上的增益，就是用输出功率减去输入功率， 即反馈功率减去基带功率。 基带信号包括 preamble信号和 date (数据）信号， preamble信号是固定大小的， 并且只在最小通道号的通路上存在； 而 date信号在有业务的情况下在所有通道 上都会存在， 但是随着业务流量的变化， date信号的大小却是忽大忽小的。 这 样经过射频链路的放大， 反馈信号也随着基带中 date信号的变化忽大忽小。 因 此在无 preamble信号的通道上，获取到通道增益的核心是要做到釆集的反馈功 率与基带功率为同一帧 （同一时刻） 的功率， 要达到这个要求就必须做到求取 基带功率的那一段信号的波形， 就是求取反馈功率的那一段波形， 两段波形要 在时间上完全对齐， 这样才能精确的求取两段功率的差值， 从而精确地得到通 道的增益。 因此在无 preamble信号的通道上， 要获取通道的增益， 可以通过获 取同一帧 date信号的基带功率和反馈功率方法做到， 而技术实现上的关键就是 要保证获取到的基带功率和反馈功率是属于同一帧的信号。 如果不是同一帧的 信号功率， 那么据此计算出来的通道增益值是毫无意义的。 S106. Determine whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain. In the preferred embodiment, the channel gain of the radio frequency channel is calculated by using the baseband power and the feedback power, so that detection and monitoring of channels other than the channel for transmitting the pilot signal can be implemented, and the current solution is solved. In the technology, it is impossible to monitor the RF channel without the Preamble signal, thereby ensuring that the user's access is not affected. Preferably, the step of acquiring the baseband power input and the output feedback power of the radio frequency channel comprises: simultaneously performing a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N > 4 , the time interval between each two samples is greater than the time difference between the signal of the baseband power and the signal of the feedback power of the output; if the data is obtained twice consecutively in the N samples Similarly, the baseband power in the data obtained from one of the two samples is taken as the baseband power of the obtained RF channel input, and the obtained one of the two samples is obtained. The feedback power in the data is used as the feedback power of the obtained RF channel output. In the preferred embodiment, the power of the feedback power and the baseband power of the current set are the same frame (the same time) by the N times of the sampling mode, so that the gain of the RF channel can be accurately obtained. In particular, when N=4, the sampling process and subsequent processing can be simplified while the RF channel gain is accurately obtained, and the sampling time is saved. Preferably, the total time of the N times is less than or equal to the length of the M data frames, and M≥2. In the preferred embodiment, by setting the total time of the N times, the efficiency of the sample can be effectively improved, and the sample time can be saved. Preferably, the radio frequency channel comprises at least one of: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal. With the preferred embodiment, monitoring of the RF channel without the Preamble signal can be achieved. Preferably, the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power comprises: setting an absolute value of a difference between the baseband power and the feedback power as the radio frequency channel Channel gain. With the preferred embodiment, the calculation of the channel gain can be achieved. Preferably, the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power may further include: setting a difference obtained by subtracting the baseband power from the feedback power to a channel gain of the radio frequency channel. Preferably, the step of determining whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain comprises: comparing the channel gain with the preset standard channel gain; If the absolute value of the difference between the gain and the preset standard channel gain is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; otherwise, the radio frequency channel is determined to be normal. With the preferred embodiment, it is possible to effectively detect whether an abnormality occurs in the radio frequency channel. Preferably, the step of obtaining the baseband power of the RF channel input and the feedback power of the output comprises: acquiring the baseband power of the RF channel input and the feedback power of the output at a predetermined period. With the preferred embodiment, the required baseband power and feedback power can be repeatedly acquired. Embodiment 2 FIG. 2 is a schematic structural diagram for power sampling according to an embodiment of the present invention, which includes: a radio frequency control board (TRX) 202, a power amplifier (PA) 204, and a radio frequency filter transmitting unit (RFE). And a digital predistortion system (DPD) 208, wherein the DPD system 208 is configured to collect baseband power and feedback power. When the entire RF channel is normal, its gain is also certain. Therefore, when the input baseband power is constant, the output feedback power is also certain. If the feedback power is too small, the RF channel is abnormal. That is, if the gain of the entire RF channel is normal and the output feedback power is normal, the gain of the entire RF channel can be calculated to determine whether the RF channel is normal. The gain on the channel is the output power minus the input power, ie the feedback power minus the baseband power. The baseband signal includes a preamble signal and a date signal, the preamble signal is fixed-size and exists only on the path of the minimum channel number; and the date signal exists on all channels in the presence of traffic, but with the service The change in traffic, the size of the date signal is suddenly large and small. In this way, after the amplification of the RF link, the feedback signal also changes with the change of the date signal in the baseband. Therefore, on the channel without the preamble signal, the core of the channel gain is obtained by the power of the same set of frames (the same time). To achieve this requirement, the baseband power must be obtained. The waveform of the signal is the waveform of the feedback power. The two waveforms are completely aligned in time, so that the difference between the two powers can be accurately obtained, so that the gain of the channel can be accurately obtained. Therefore, in the channel without the preamble signal, the gain of the channel can be obtained by acquiring the baseband power and feedback power of the same frame date signal, and the key to the technical implementation is to ensure that the obtained baseband power and feedback power are Signals belonging to the same frame. If it is not the signal power of the same frame, then the channel gain value calculated accordingly is meaningless.
WIMAX信号帧是 5ms帧， 目前 RRU上的 DPD(Data Pre-Distortion, 数字 预失真）系统就一直周期在釆集基带功率和反馈功率，并将釆集的信号功率数值 分别写入寄存器， 因而寄存器中的基带信号功率值和反馈功率值是周期 5ms更 新的。 然而同一帧的基带信号和反馈信号之间有时间差 t。 该时间差1 = 11 (通 道链路的时延） + t2(功率釆集写入寄存器的时延)。 基带信号和反馈信号在时间 轴上的分布如下图 3所示。 如果在同一时刻区釆集， 有可能釆到的基带功率和反馈功率不是同一帧的 信号， 如图 3中釆样时刻 b。 为了保证一定能釆集到同一帧的基带功率和反馈 功率， 本优选的实施例釆用连续四次釆样的方法， 这四次釆样的时间遵循以下 规则： 1、 四次釆样总时间长度不超过两帧； 2、 每两次时间间隔大于基带信号 与反馈信号的时间差 t。 这样四次釆样中总有连续两次釆样的基带信号和反馈 信号完全一样， 这连续两次釆样相同的釆样值就是同一帧信号的釆样值， 这样 就得到了同一帧信号的基带功率值和反馈功率值， 也就可以准确得计算出该通 道的增益。 在图 3中， 釆样点 c和 d就是符合上述要求的有效值。 当然， 本优 选实施例中釆用 4次连续釆样方式， 这只是一种示例， 本发明不仅限于此， 例 如， 可以釆用 6次或 8次连续釆样方式等。 通道增益计算出来后， 同该通道的增益标准值比较， 就能知道该射频通道 是否正常。 也就实现了通过监控射频通道的增益值来达到监控整个射频通道状 态的目的。
下面描述整体的射频通道的检测过程， 图 4是根据本发明实施例的射频通 道检测的另一种优选的流程图， 其包括如下步 4聚： The WIMAX signal frame is a 5ms frame. Currently, the DPD (Data Pre-Distortion) system on the RRU always collects the baseband power and feedback power, and writes the collected signal power values into the registers, thus the registers. The baseband signal power value and the feedback power value are updated in a period of 5 ms. However, there is a time difference t between the baseband signal and the feedback signal of the same frame. The time difference is 1 = 11 (the delay of the channel link) + t2 (the delay of the power set to the register). The distribution of the baseband signal and the feedback signal on the time axis is shown in Figure 3. If the data is collected in the same time zone, it is possible that the baseband power and the feedback power that are picked up are not the signals of the same frame, as shown in FIG. In order to ensure that the baseband power and feedback power of the same frame can be collected, the preferred embodiment uses four consecutive samples. The time of the four samples follows the following rules: 1. The total time of four samples The length does not exceed two frames; 2. Each time interval is greater than the time difference t between the baseband signal and the feedback signal. In this way, the baseband signal and the feedback signal of the two consecutive samples are exactly the same. The same sample value of the same two consecutive samples is the sample value of the same frame signal, thus obtaining the same frame signal. The baseband power value and the feedback power value can accurately calculate the gain of the channel. In Fig. 3, the sample points c and d are effective values that meet the above requirements. Of course, in the preferred embodiment, four consecutive sampling methods are used, which is merely an example, and the present invention is not limited thereto, and for example, six or eight consecutive sampling methods may be employed. After the channel gain is calculated, it can be compared with the gain standard value of the channel to know whether the RF channel is normal. In addition, the purpose of monitoring the state of the entire RF channel is achieved by monitoring the gain value of the RF channel. The following describes the detection process of the entire RF channel. FIG. 4 is another preferred flow chart of the RF channel detection according to the embodiment of the present invention, which includes the following steps:
S402、 RRU周期检测 date信号的基带功率和反馈功率， 每次釆集都用四 次釆样的方式； S404、 提取这四次釆样中连续两组数据都相同的数据作为可靠样本； S402, RRU period detection base signal power and feedback power of the date signal, each time the collection is used four times; S404, extracting the data of the same two sets of data in the four samples as the reliable sample;
S406 , 通过上述可靠样本计算得到通道的增益值； S406, calculating a gain value of the channel by using the above reliable sample;
S408、 将计算得到的增益值与标准增益值进行比较， 如果计算得到的增益 值大于标准增益值， 则转至 S410; 否则， 则转至 S402, 继续处理； S408. Compare the calculated gain value with a standard gain value. If the calculated gain value is greater than the standard gain value, go to S410; otherwise, go to S402 and continue processing;
S410, 上报告警说明通道异常。 这样 RRU就达到了实时监控射频通道状 态的目的。 实施例 3 图 5是根据本发明实施例的全球微波互联接入系统中射频通道的检测装置 的一种优选的结构图， 其包括： 获取单元 502 , 用于获取射频通道输入的基带 功率和输出的反馈功率； 计算单元 504 , 与获取单元 502连接， 用于通过所述 基带功率和所述反馈功率计算得到所述射频通道的通道增益； 判断单元 506 , 与计算单元 504连接， 用于通过比较所述通道增益与预设的标准通道增益来判 断所述射频通道是否出现异常。 在本优选的实施例中， 通过所述基带功率和所述反馈功率计算得到所述射 频通道的通道增益， 从而可以实现对除发送导频信号的通道之外的通道进行检 测监控， 解决了现有技术中无法对无 Preamble 信号的射频通道进行监控的问 题， 进而保证了用户的接入不受影响。 优选的， 所述获取单元 502包括： 釆样模块， 用于同时对所述输入的基带 功率的信号以及所述输出的反馈功率的信号进行连续的 N次釆样，其中， N≥ 4 , 每两次釆样的时间间隔大于所述基带功率的信号与所述输出的反馈功率的信 号之间的时间差； 设置模块， 用于在所述 N次釆样中连续两次所釆样得到的数 据相同时， 将所述两次釆样中的一次釆样所得到的数据中的基带功率作为所获 得的射频通道输入的基带功率， 并将所述两次釆样中的一次釆样所得到的数据 中的反馈功率作为所获得的射频通道输出的反馈功率。 在本优选的实施例中， 通过连续 N次的釆样方式， 可以保证釆集的反馈功率和基带功率为同一帧（同
一时刻） 的功率， 从而能够^"确地得到射频通道的增益。 特别地， 当 N=4时， 可以在 ^"确获取射频通道增益的同时， 简化了釆样过程以及后续处理过程， 并 节省了釆样时间。 优选的， 所述 N次釆样的总时间小于等于 M个数据帧的长度， M > 2。 在 本优选的实施例中， 通过设置 N次釆样的总时间， 可以有效提高釆样效率， 节 省釆样时间。 优选的，所述射频通道包括以下至少之一：发送用户数据信号的射频通道、 发送导频信号的射频通道。 通过本优选的实施例， 可以实现对无 Preamble信号 的射频通道进行监控。 优选的， 通过所述基带功率和所述反馈功率计算得到所述射频通道的通道 增益的步骤包括： 将所述基带功率与所述反馈功率之间的差值的绝对值设置为 所述射频通道的通道增益。通过本优选的实施例，可以实现对通道增益的计算。 优选的， 通过所述基带功率和所述反馈功率计算得到所述射频通道的通道增益 的步骤还可以包括： 将所述反馈功率减去所述基带功率所得到的差值设置为所 述射频通道的通道增益。 优选的， 所述判断单元 506包括： 比较模块， 用于将所述通道增益与所述 预设的标准通道增益进行比较； 判断模块， 用于在所述通道增益与所述预设的 标准通道增益之间的差值的绝对值大于预定的阈值时， 判断出所述射频通道出 现异常； 在所述通道增益与所述预设的标准通道增益之间的差值的绝对值小于 等于预定的阈值时， 判断出所述射频通道正常。 通过本优选的实施例， 可以有 效地检测出射频通道是否出现异常。 优选的， 获取单元 502获取射频通道输入的基带功率和输出的反馈功率的 步骤包括： 以预定的周期获取所述射频通道输入的基带功率和输出的反馈功 率。 通过本优选的实施例， 可以重复获取所需的基带功率和反馈功率。 需要说明的是， 在附图的流程图示出的步骤可以在诸如一组计算机可执行 指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但是在某 些情况下， 可以以不同于此处的顺序执行所示出或描述的步 4聚。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以 用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多 个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码
来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或者将它们 分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作成单个集 成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领 域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之 内。
S410, the alarm is reported to indicate that the channel is abnormal. In this way, the RRU achieves the purpose of monitoring the status of the RF channel in real time. Embodiment 3 FIG. 5 is a schematic structural diagram of a device for detecting a radio frequency channel in a global microwave interconnection system according to an embodiment of the present invention, which includes: an acquisition unit 502, configured to acquire baseband power and output of an RF channel input. The feedback unit 504 is connected to the obtaining unit 502, configured to calculate the channel gain of the radio frequency channel by using the baseband power and the feedback power; and the determining unit 506 is connected to the calculating unit 504 for comparing The channel gain and a preset standard channel gain are used to determine whether the RF channel is abnormal. In the preferred embodiment, the channel gain of the radio frequency channel is calculated by using the baseband power and the feedback power, so that detection and monitoring of channels other than the channel for transmitting the pilot signal can be implemented, and the current solution is solved. In the technology, it is impossible to monitor the RF channel without the Preamble signal, thereby ensuring that the user's access is not affected. Preferably, the obtaining unit 502 includes: a sampling module, configured to simultaneously perform a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N≥4, each The time interval between the two samples is greater than the time difference between the signal of the baseband power and the signal of the feedback power of the output; a setting module, which is used for data obtained twice consecutively in the N samples In the same case, the baseband power in the data obtained from one of the two samples is taken as the baseband power of the obtained RF channel input, and the obtained one of the two samples is obtained. The feedback power in the data is used as the feedback power of the obtained RF channel output. In the preferred embodiment, the feedback power and the baseband power of the set are the same frame by the continuous N times of sampling. The power of the moment, so that the gain of the RF channel can be surely obtained. In particular, when N=4, the sampling process and subsequent processing can be simplified while the gain of the RF channel is obtained. Save time. Preferably, the total time of the N times is less than or equal to the length of M data frames, and M>2. In the preferred embodiment, by setting the total time of the N times, the efficiency of the sample can be effectively improved, and the sample time can be saved. Preferably, the radio frequency channel comprises at least one of: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal. With the preferred embodiment, monitoring of the RF channel without the Preamble signal can be achieved. Preferably, the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power comprises: setting an absolute value of a difference between the baseband power and the feedback power as the radio frequency channel Channel gain. With the preferred embodiment, the calculation of the channel gain can be achieved. Preferably, the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power may further include: setting a difference obtained by subtracting the baseband power from the feedback power to the radio frequency channel Channel gain. Preferably, the determining unit 506 includes: a comparing module, configured to compare the channel gain with the preset standard channel gain; and a determining module, configured to use the channel gain and the preset standard channel When the absolute value of the difference between the gains is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; the absolute value of the difference between the channel gain and the preset standard channel gain is less than or equal to a predetermined value At the threshold, it is determined that the radio frequency channel is normal. With the preferred embodiment, it is possible to effectively detect whether an abnormality occurs in the radio frequency channel. Preferably, the acquiring unit 502 acquires the baseband power input by the radio frequency channel and the feedback power of the output, and comprises: acquiring the baseband power of the radio frequency channel input and the feedback power of the output at a predetermined period. With the preferred embodiment, the required baseband power and feedback power can be repeatedly acquired. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different from that herein. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be executed by a computing device This can be implemented, and thus, they can be stored in a storage device by a computing device, or they can be fabricated into individual integrated circuit modules, or a plurality of modules or steps can be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
Claims
1. 一种全球微波互联接入系统中射频通道的检测方法， 包括： 1. A method for detecting an RF channel in a global microwave interconnection access system, comprising:
获取射频通道输入的基带功率和输出的反馈功率； Obtaining the baseband power of the RF channel input and the feedback power of the output;
通过所述基带功率和所述反馈功率计算得到所述射频通道的通道增 益； Calculating a channel gain of the radio frequency channel by using the baseband power and the feedback power;
通过比较所述通道增益与预设的标准通道增益来判断所述射频通道 是否出现异常。 Whether the RF channel is abnormal is determined by comparing the channel gain with a preset standard channel gain.
2. 根据权利要求 1所述的方法， 其中， 所述获取射频通道输入的基带功率 和输出的反馈功率的步骤包括： 2. The method according to claim 1, wherein the step of acquiring baseband power and output feedback power of the radio frequency channel input comprises:
同时对所述输入的基带功率的信号以及所述输出的反馈功率的信号 进行连续的 N次釆样， 其中， N≥ 4 , 每两次釆样的时间间隔大于所述基 带功率的信号与所述输出的反馈功率的信号之间的时间差； 若所述 N次釆样中连续两次所釆样得到的数据相同， 则将所述两次 釆样中的一次釆样所得到的数据中的基带功率作为所获得的射频通道输 入的基带功率， 并将所述两次釆样中的所述一次釆样所得到的数据中的 反馈功率作为所获得的射频通道输出的反馈功率。 Simultaneously, the signal of the input baseband power and the signal of the output feedback power are continuously N times, wherein N≥4, the time interval of each two samples is greater than the signal and the baseband power The time difference between the signals of the output feedback power; if the data obtained by the two consecutive samples in the N times is the same, the data obtained in the sample of the two samples is The baseband power is used as the baseband power of the obtained RF channel input, and the feedback power in the data obtained by the one of the two samples is used as the feedback power of the obtained RF channel output.
3. 根据权利要求 2所述的方法， 其中， 所述 N次釆样的总时间小于等于 M 个数据帧的长度， M > 2。 3. The method according to claim 2, wherein the total time of the N times is less than or equal to the length of M data frames, M>2.
4. 根据权利要求 1所述的方法， 其中， 所述射频通道包括以下至少之一： 发送用户数据信号的射频通道、 发送导频信号的射频通道。 The method according to claim 1, wherein the radio frequency channel comprises at least one of: a radio frequency channel for transmitting a user data signal, and a radio frequency channel for transmitting a pilot signal.
5. 根据权利要求 1所述的方法， 其中， 通过所述基带功率和所述反馈功率 计算得到所述射频通道的通道增益的步骤包括： 5. The method according to claim 1, wherein the step of calculating the channel gain of the radio frequency channel by using the baseband power and the feedback power comprises:
将所述反馈功率减去所述基带功率所得到的差值设置为所述射频通 道的通道增益。 The difference obtained by subtracting the feedback power from the baseband power is set as the channel gain of the radio frequency channel.
6. 根据权利要求 1所述的方法， 其中， 通过比较所述通道增益与预设的标 准通道增益来判断所述射频通道是否出现异常的步骤包括： 6. The method according to claim 1, wherein the step of determining whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain comprises:
将所述通道增益与所述预设的标准通道增益进行比较； 若所述通道增益与所述预设的标准通道增益之间的差值的绝对值大 于预定的阈值， 则判断出所述射频通道出现异常； 否则， 则判断出所述 射频通道正常。 Comparing the channel gain with the preset standard channel gain; If the absolute value of the difference between the channel gain and the preset standard channel gain is greater than a predetermined threshold, it is determined that the radio frequency channel is abnormal; otherwise, the radio frequency channel is determined to be normal.
7. 根据权利要求 1所述的方法， 其中， 获取射频通道输入的基带功率和输 出的反馈功率的步骤包括： 7. The method according to claim 1, wherein the step of acquiring the baseband power and the output feedback power of the RF channel input comprises:
以预定的周期获取所述射频通道输入的基带功率和输出的反馈功 率。 The baseband power of the RF channel input and the feedback power of the output are acquired at predetermined cycles.
8. —种全球微波互联接入系统中射频通道的检测装置， 包括： 8. A device for detecting radio frequency channels in a global microwave interconnection system, comprising:
获取单元，设置为获取射频通道输入的基带功率和输出的反馈功率； 计算单元， 设置为通过所述基带功率和所述反馈功率计算得到所述 射频通道的通道增益； An obtaining unit, configured to obtain a baseband power input and a feedback power of the output of the radio frequency channel; and a calculating unit, configured to calculate, by using the baseband power and the feedback power, a channel gain of the radio frequency channel;
判断单元， 设置为通过比较所述通道增益与预设的标准通道增益来 判断所述射频通道是否出现异常。 The determining unit is configured to determine whether the radio frequency channel is abnormal by comparing the channel gain with a preset standard channel gain.
9. 根据权利要求 8所述的装置， 其中， 所述获取单元包括： 9. The device according to claim 8, wherein the obtaining unit comprises:
釆样模块， 设置为同时对所述输入的基带功率的信号以及所述输出 的反馈功率的信号进行连续的 N次釆样， 其中， N > 4 , 每两次釆样的时 间间隔大于所述基带功率的信号与所述输出的反馈功率的信号之间的时 间差； a sample module, configured to simultaneously perform a continuous N times sampling of the input baseband power signal and the output feedback power signal, wherein N>4, the time interval of each two samples is greater than the a time difference between a signal of the baseband power and a signal of the feedback power of the output;
设置模块， 设置为在所述 N次釆样中连续两次所釆样得到的数据相 同时， 将所述两次釆样中的一次釆样所得到的数据中的基带功率作为所 获得的射频通道输入的基带功率， 并将所述两次釆样中的一次釆样所得 到的数据中的反馈功率作为所获得的射频通道输出的反馈功率。 a setting module, configured to use the baseband power in the data obtained from one of the two samples as the obtained radio frequency when the data obtained by the two samples in the N times is the same The baseband power of the channel input, and the feedback power in the data obtained by one of the two samples is used as the feedback power of the obtained RF channel output.
10. 根据权利要求 8所述的装置， 其中， 所述判断单元包括： The device according to claim 8, wherein the determining unit comprises:
比较模块， 设置为将所述通道增益与所述预设的标准通道增益进行 比较； a comparison module configured to compare the channel gain with the preset standard channel gain;
判断模块， 设置为在所述通道增益与所述预设的标准通道增益之间 的差值的绝对值大于预定的阈值时， 判断出所述射频通道出现异常； 在 所述通道增益与所述预设的标准通道增益之间的差值的绝对值小于等于 所述预定的阈值时， 判断出所述射频通道正常。 a determining module, configured to determine that an abnormality occurs in the radio frequency channel when an absolute value of a difference between the channel gain and the preset standard channel gain is greater than a predetermined threshold; When the absolute value of the difference between the preset standard channel gains is less than or equal to the predetermined threshold, it is determined that the radio frequency channel is normal.
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| CN201010516795.3 | 2010-10-22 | ||
| CN201010516795.3A CN102457882B (en) | 2010-10-22 | 2010-10-22 | Method and device for detecting radio frequency channel in worldwide interoperability system for microwave access |
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| CN112684476A (en) * | 2020-11-23 | 2021-04-20 | 中国人民解放军国防科技大学 | Method for reducing false alarm rate of signal channel of navigation receiver and satellite-borne navigation receiver |
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| WO2004098045A1 (en) * | 2003-04-30 | 2004-11-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and device for power amplifier with high accuracy of an output signal |
| CN101257331A (en) * | 2008-03-20 | 2008-09-03 | 华为技术有限公司 | Gain automatic correction method and transmitter |
| CN101730210A (en) * | 2009-12-07 | 2010-06-09 | 中兴通讯股份有限公司 | Method and device for calibrating downlink radio frequency |
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| CN1901393A (en) * | 2006-07-26 | 2007-01-24 | 华为技术有限公司 | System and method for regulating far end radio frequency unit power and far end radio frequency unit |
| CN101426219B (en) * | 2008-11-25 | 2010-06-30 | 芯通科技（成都）有限公司 | Detection method for TD-SCDMA multichannel radio frequency remote unit antenna system |
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| WO2004098045A1 (en) * | 2003-04-30 | 2004-11-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and device for power amplifier with high accuracy of an output signal |
| CN101257331A (en) * | 2008-03-20 | 2008-09-03 | 华为技术有限公司 | Gain automatic correction method and transmitter |
| CN101730210A (en) * | 2009-12-07 | 2010-06-09 | 中兴通讯股份有限公司 | Method and device for calibrating downlink radio frequency |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112684476A (en) * | 2020-11-23 | 2021-04-20 | 中国人民解放军国防科技大学 | Method for reducing false alarm rate of signal channel of navigation receiver and satellite-borne navigation receiver |
| CN112684476B (en) * | 2020-11-23 | 2022-05-06 | 中国人民解放军国防科技大学 | Method for reducing false alarm rate of signal channel of navigation receiver and satellite-borne navigation receiver |
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