WO2009092320A1

WO2009092320A1 - Detecting method, detecting device and logic chip

Info

Publication number: WO2009092320A1
Application number: PCT/CN2009/070146
Authority: WO
Inventors: Yulin Li
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2008-01-18
Filing date: 2009-01-14
Publication date: 2009-07-30
Also published as: CN101217303A

Abstract

A detecting method, a detecting device and a logic chip are disclosed. The method includes that: the isolation between the antenna to be detected and another antenna in the same sector is detected; a judgment that the antenna has a connection error is made if the isolation between the antenna to be detected and another antenna in the same sector exceeds a predetermined threshold of the isolation. A reverse power detecting channel owned by the existing device is adopted to save hardware cost, and the signal of another antenna in the same sector received by the reverse power detecting channel is detected, and whether the antenna has a connection error can be directly determined, thus the problem that connection error easily happens in multi-sectors in the prior art and the problems of heavy workload and complexity and great difficulties of construction after location and so on in the existing detecting method can be effectively solved.

Description

The present invention claims the priority of a Chinese patent application filed on January 18, 2008 by the Chinese Patent Office, Application No. 200810056498.8, entitled "Detection Method, Detection Device, and Logic Chip". The entire contents are incorporated herein by reference.

Say

Technical field

The invention relates to a detection method, a detection device and a logic chip, in particular to a method, a device and a logic chip for detecting an antenna connection condition in a sector, and belongs to the technical field of wireless communication.

Book

Background technique

In the prior art, the multi-sector method is mostly used for the outdoor coverage of the communication system to solve the problem that the large-capacity user needs to be widely covered. Multi-sector applications need to set multiple antennas correspondingly. Therefore, the sector interface connection error between the antenna and the corresponding base station is easy to occur, resulting in interference problems between different sectors of the neighboring cell or diversity reception performance, which further leads to the communication system. Performance is declining.

In the prior art, after the base station construction and the antenna erection are completed, it is generally impossible to obtain whether the antenna and the corresponding base station interface are connected incorrectly, and generally it is judged by the actual application situation, for example, when the user sends and receives a signal abnormality, the complaint is made, and the network optimization engineer goes to the complaint. The area covered by the user performs road test to determine whether the coverage meets the design requirements and detects the connection problem of the antenna. The existing methods of detecting antenna connections are labor intensive and complicated, requiring network optimization engineers to perform a large number of tests to find, and it is difficult to accurately locate which antenna connection errors are in multiple sectors. Summary of the invention

A first aspect of the present invention provides a detection method for solving the problem that a multi-sector is prone to connection errors in the prior art, and that the existing detection method has a large workload and a complicated workload, and the Detecting antenna connection errors and avoiding problems that are difficult to find after the base station is operating.

A second aspect of the present invention provides a detecting apparatus for solving the problem that a multi-sector is prone to connection errors in the prior art, realizing the use of existing equipment, saving hardware costs, and detecting an antenna before the base station operates. Whether it is wrong or not, it is difficult to find problems after the base station is operated. A third aspect of the present invention provides a logic chip for solving the problem that multiple sectors are prone to connection errors in the prior art, and that the antenna connection error can be detected by a simple method.

In order to achieve the first aspect of the present invention, the detection method of some embodiments of the present invention includes:

Detecting the isolation between the antenna to be tested and other antennas in the same sector;

When the isolation between the antenna to be tested and other antennas in the same sector exceeds the preset isolation threshold, the antenna connection error is judged.

In order to achieve the second aspect of the present invention, the detecting apparatus of other embodiments of the present invention includes:

a detecting unit, configured to detect an isolation between the antenna to be tested and other antennas in the same sector;

The processing unit is connected to the detecting unit, and is configured to determine an antenna connection error when the isolation between the antenna to be tested and other antennas in the same sector exceeds a preset isolation threshold.

To implement the third aspect of the present invention, the logic chip of other embodiments of the present invention includes:

a storage module, configured to store an isolation threshold between antennas in the same sector;

The processing module is connected to the storage module, and is configured to determine whether the isolation between the antennas in the same sector exceeds a set isolation threshold, and determine an antenna connection error when the threshold is exceeded.

In the above technical solution, before the operation, the reverse power detection channel of the existing device (such as the base station) is used to determine the problem of the sector antenna connection error, and the hardware cost is saved, and the same sector received by the reverse power detection channel is used. The detection of the antenna signal can directly determine whether the antenna is connected incorrectly. Compared with the prior art, the detection method of each technical solution of the present invention is simple, and the situation of the sector antenna connection error can be detected with a high probability. Compared with the prior art, the embodiments of the present invention have the advantages of high integration and cost saving. Compared with the prior art, the process of calculating and analyzing and adjusting according to the test results is saved, which saves manpower, material resources and time. DRAWINGS

1 is a flow chart of Embodiment 1 of a detecting method of the present invention;

2 is a flow chart of Embodiment 2 of the detecting method of the present invention;

3 is a flow chart of Embodiment 3 of the detecting method of the present invention;

Figure 4 is a structural view of a first embodiment of the detecting device of the present invention;

Figure 5 is a structural view of a second embodiment of the detecting device of the present invention;

6 is a schematic structural view of a third embodiment of a detecting device according to the present invention;

FIG. 7 is a structural diagram of an embodiment of a logic chip according to the present invention. detailed description

Referring to FIG. 1, a flowchart of Embodiment 1 of a detection method of the present invention is shown. As shown in FIG. 1, this embodiment includes:

Step 101: detecting isolation between the antenna to be tested and other antennas in the same sector;

Step 102: When the isolation between the antenna to be tested and other antennas in the same sector exceeds a preset isolation threshold, the antenna connection error is determined.

In this embodiment, the isolation between the antenna to be tested and other antennas in the same sector is detected to determine whether there is an antenna connection error, because the isolation between different sector antennas is much greater than the isolation between the same sector antennas, An isolation threshold can be set. When the isolation between the same-sector antenna exceeds the set threshold, it is known that there is an antenna connection error (maybe an antenna is connected to an adjacent sector, or If an antenna is disconnected and the isolation between the antenna and other antennas is greater than the set threshold, the antenna connection error can be directly determined, and an alarm message can be sent for subsequent processing.

Referring to FIG. 2, it is a flowchart of Embodiment 2 of the detection method of the present invention. As shown in FIG. 2, this embodiment includes:

Step 201: Receive, by using an antenna interface corresponding to the antenna to be tested, a transmit signal of other antennas in the same sector.

Step 202: Detecting a power of a received signal of the received other antennas;

Step 203: Obtain a difference between a transmit power of other antenna signals in the same sector (the transmit power is predicted or measurable) and a power of the other antenna signals in the same sector received through the antenna interface to be tested. The isolation between the antenna to be tested and other antennas in the same sector;

Step 204: Determine whether the isolation between the antenna to be tested and other antennas in the same sector exceeds the preset isolation threshold. If yes, go to step 205; otherwise, go to step 206;

Step 205: There is an antenna connection error, and the end is completed;

Step 206: The antenna is connected correctly and ends.

The embodiment of FIG. 2 receives the transmission signals of other antennas in the same sector by using the antenna interface corresponding to the antenna to be tested, and according to the difference between the transmission power of other antenna signals in the same sector and the received power of other antenna signals in the same sector. As the isolation between the antenna to be tested and other antennas in the same sector, it is determined whether there is an antenna connection error in the same sector, because the isolation between different sector antennas is much larger than that between the same sector antennas. Degree, so you can set an isolation threshold, such as: Set the threshold to the isolation between the same sector main diversity antenna, when the isolation between the same sector antenna is detected to exceed the set isolation At the threshold value, it is judged that there is an antenna connection error for subsequent troubleshooting of the connection error antenna.

In this embodiment, the method for detecting the connection error of the sector antenna does not need to increase the hardware cost excessively. The existing antenna interface is used to receive the other antenna signals of the same sector for detection, and the antenna can be directly determined whether the antenna is connected incorrectly, compared with the prior art. In this embodiment, the detection method is simple, and the situation that the sector antenna connection error is detected can be detected with a high probability, and the occurrence of problems after the subsequent operation and the difficulty in locating the problem are avoided. Referring to FIG. 3, it is a flowchart of Embodiment 3 of the detection method of the present invention. This embodiment is similar to FIG. 2 and has the functions and advantages of FIG. 2, but is refined in FIG. 2. As shown in FIG. 3, this embodiment includes:

Step 301: Determine whether the antenna interface corresponding to the antenna to be tested does not transmit a signal, if yes, go to step 302, otherwise continue to step 301;

Step 302: Receive a signal corresponding to another antenna in the same antenna interface of the antenna to be tested, and transmit power of another antenna signal in the same sector as the antenna interface is predictable or measurable, and the power may be The processing unit is determined according to the setting of the current transmitter transmit power, and may also be detected by the reverse detection channel connected by the antenna interface corresponding to the other antenna;

Step 303: Detecting, by using a reverse detection channel, the received power of another antenna signal in the same sector. Step 304: Calculating a difference between a received power of another antenna signal and a transmit power of the another antenna signal, That is, the isolation between the antenna to be tested and another antenna in the same sector;

Step 305: Determine whether the measured isolation exceeds a preset threshold, if yes, go to step 306; otherwise, go to step 307;

Step 306: Trigger an alarm message that is incorrectly connected to the antenna, and end;

Step 307: Send the correct information to the antenna and end.

This embodiment further refines the embodiment of FIG. 2, and uses the reverse detection channel existing in the general base station to receive the transmission signals of other antennas in the same antenna. This embodiment can be understood in conjunction with the embodiment of the detecting apparatus of the present invention in FIG. 6. As shown in FIG. 6, it is assumed that in a normal state, the duplexer transmits a signal to an antenna of one sector through the antenna interface 111; another duplexer passes The antenna interface 112 transmits a signal to another antenna that is in the same sector as the antenna interface 111. In the detection state, the antenna interface 111 or 112 also receives transmission signals from other antennas in the same sector. In this embodiment, an existing antenna interface is used to receive a signal transmitted by another antenna in the same sector (an antenna that does not correspond to the antenna interface), and the power of another antenna signal in the same sector can be detected, for example, by using the antenna interface 111. Receiving the signal transmitted by another antenna in the same sector, since the transmission signal of the other antenna in the same sector is predicted, the difference between the two can be calculated, and the actually measured isolation between the two antennas in the same sector = antenna The transmit signal power of the other antenna corresponding to the interface 112 - the transmit power of the other antenna in the same sector received by the antenna interface 111 through the antenna to be tested, due to the isolation between different sector antennas, or the measurement when the antenna is disconnected The isolation is much larger than the isolation between the antennas of the same sector. Therefore, when the actual measured isolation between the same-sector antenna is greater than the preset threshold, the antenna connection error can be judged.

In the case where there are more than 2 antennas in the same sector (for example, one main set antenna, multiple diversity antennas or multiple main set antennas, multiple diversity antennas), the antenna interface corresponding to the antenna to be tested can be time-divided. (different times) detecting signals of different antennas in the same sector as the antenna interface, thereby respectively calculating the isolation between the antenna to be tested and other antennas in the same sector, and the detection process may repeat steps 01-07, but only in different Time receives signals from a plurality of other different antennas in the same sector, Here, the parameters of the reverse detection channel can be adjusted according to the received signal, for example, the antenna to be tested is A, and when the antenna interface to be tested does not transmit a signal, the signal of the antenna B in the same sector is received at a certain moment. Calculate the isolation between antenna A and antenna B, determine whether antenna A or B is connected incorrectly; receive the signal of antenna C in the same sector at the next moment, calculate the isolation between antenna A and antenna C, and judge A or C is connected incorrectly, and so on.

The embodiment of FIG. 3 is a detection performed when the antenna interface corresponding to the antenna to be tested does not transmit a signal, and those skilled in the art should understand that all antenna interfaces need to transmit signals under normal working conditions. The method of the example can still implement the detection, except that the power received by the antenna interface corresponding to the antenna to be tested has not only the forward receiving power of other antennas in the same sector, but also the reverse receiving power when the antenna to be tested transmits the signal. After subtracting the reverse power of the antenna to be tested (eg, by subtracting the reverse power from the power calculation unit in FIG. 6), the subsequent isolation threshold value can be determined.

In the embodiment of FIG. 3, when the antenna interface corresponding to the antenna to be tested does not transmit a signal, the isolation between the antennas is detected, and the interference is small and more accurate. However, the embodiment of FIG. 2 performs the antenna between when the antenna interface is not transmitted. The detection of isolation can also be achieved.

According to the different requirements of the system, different values can be flexibly set as the set isolation threshold. Since the isolation is the difference between the mutual transmit power and the mutual received power between different antennas, if the received signal power is higher, Low, the greater the isolation between the antennas; the smaller the isolation between the same sector antennas; the isolation between the different sector antennas is much greater than the isolation between the same sector antennas; The isolation between the root antennas is greater than the preset isolation threshold, so that one of the antennas may be connected incorrectly (for example, the antenna is connected to a different sector or the antenna is disconnected), and the accurate positioning of the error can facilitate subsequent operations. The staff checked the fault.

In the foregoing embodiment, since the same sector may be provided with a pair of primary diversity antennas, or multiple antennas (one primary antenna, multiple diversity antennas), the isolation between the set same-sector antennas may be The threshold may be set to be greater than the maximum isolation between the same-sector antennas in the base station, and less than any value between the minimum isolation between the hetero-sector antennas in the base station.

Referring to FIG. 4, it is a structural diagram of Embodiment 1 of the detecting device of the present invention. This embodiment includes:

a detecting unit 401, configured to detect an isolation between the antenna to be tested and other antennas in the same sector;

The processing unit 402 is connected to the detecting unit 401, and is configured to determine an antenna connection error when the isolation between the antenna to be tested and other antennas in the same sector exceeds a preset isolation threshold.

In this embodiment, the comparison between the antenna connection error detection and the preset isolation threshold is simple, and the isolation between the same-sector antenna is much smaller than the isolation between different sectors, which can be conveniently and quickly determined. The connection between the antennas is incorrect. Compared with the prior art, the process of calculating, analyzing, and adjusting the test results is omitted, which saves manpower, material resources, and time. For details, refer to the method embodiments, and no further details are provided.

Referring to FIG. 5, it is a structural diagram of Embodiment 2 of the detecting device of the present invention. This embodiment further refines the embodiment of FIG. 4, such as As shown in FIG. 5, the detecting unit 501 in this embodiment includes: an antenna interface 5011 for receiving a transmitting signal of other antennas in the same sector; a reverse detecting channel 5012 connected to the antenna interface 5011, configured to detect the antenna interface received The power of the other antenna signals in the same sector; the isolation calculation unit 5013 is configured to obtain the difference between the transmit power of other antenna signals in the same sector and the received power of the other antenna signals in the same sector. , as the isolation between the antenna to be tested and other antennas in the same sector.

The reverse detection channel 5012 in this embodiment may include:

a reverse coupler coupled to the antenna interface for transmitting/receiving signals coupled to the antenna interface;

a reverse detection channel connected to the reverse coupler for detecting the power of the signal received by the reverse coupler; a power calculation unit for receiving the signal from the reverse coupler according to the coupling coefficient of the reverse coupler The power of the other antenna signals in the same sector received by the antenna interface is calculated.

The reverse detection channel may include a detector for detecting the amplitude of the received antenna signal to obtain the power of the received signal. Of course, other devices may also be used, such as: converting the received transmission signal to one by frequency conversion. The lower frequency is passed through a filter, and then detected or demodulated to determine the level of the received transmitted signal. The advantage of this detection method is that it avoids radiation interference from other antennas and has high detection accuracy.

The processing unit 502 in this embodiment includes: a storage subunit 5021 for storing an isolation threshold between antennas in the same sector; a determining subunit 5022, connected to the storage subunit 5021, for using the antenna to be tested and When the isolation between the other antennas in the same sector exceeds the preset isolation threshold, the antenna connection error is determined; the alarm subunit 5023 is connected to the determination subunit 5022, and is configured to trigger the alarm information when the antenna connection is incorrect.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a third embodiment of a detecting apparatus according to the present invention. This embodiment illustrates the specific application of the present invention in conjunction with the internal structure of the base station device.

As shown in FIG. 6, it is assumed that in a normal state, the duplexer transmits a signal to a certain sector main set antenna through the antenna interface 601a; the other duplexer transmits a signal to the diversity antenna of the same sector as the antenna interface 601a through the antenna interface 601b. . In the detection state, the antenna interface 601a or 601b also receives a transmission signal of another antenna in the same sector, for example, the antenna interface 601a also receives the transmission signal of the diversity antenna; and the antenna interface 601b also receives the transmission signal of the main set antenna. The reverse signal detection channel 602a, the detector 602a2 and the power calculation unit 602a3, as shown by the dashed box in FIG. 6, detects the transmit signal power of an antenna through the reverse detection channel provided by the device. And detecting the transmitted signal power of the other antenna of the same sector by the reverse detecting channel 602b composed of the reverse coupler 602M, the detector 602b2, and the power calculating unit 602b3. Since the isolation between the same-sector antenna is much smaller than the isolation between the different sector antennas, according to the isolation threshold value preset in the processing unit 502, when the isolation calculation unit 603a or the isolation calculation unit 603b calculates When the isolation between the two antennas exceeds the preset isolation threshold, it can be known that the antenna connection is incorrect at this time, and the alarm signal is triggered by the processing unit 502. Alerts. The detecting device in this embodiment can also receive signals of other antennas in the same sector when the antenna interface corresponding to the antenna to be tested does not transmit a signal, and the detection result is more accurate and higher precision. The specific working process of the detecting device of this embodiment is:

1. The transmitting signal of the other antennas in the same sector received by the antenna port corresponding to the antenna to be tested is collected by the reverse coupler, and the signal transmission frequency and power of other antennas in the same sector are predicted;

2. detecting, by the inverse detector, the amplitude of the signal received by the reverse coupler and sending it to the power calculation unit;

3. Calculating the isolation between the antenna to be tested and other antennas in the same sector by the isolation calculation unit;

4. The processing unit compares the preset isolation threshold value with the actually measured isolation between the antennas, and generally the isolation between different sector antennas is much greater than the isolation between the main sector diversity antennas. Therefore, if the actual measured isolation between the antennas exceeds the preset isolation threshold, it is determined that the antenna is connected incorrectly and an alarm is triggered; otherwise, the antenna connection is determined to be correct and no alarm is generated.

In the foregoing embodiments, the problem of the sector antenna connection error is determined by the reverse detection channel of the existing device (such as the base station), and the hardware cost is not excessively increased, and other antennas of the same sector received by the reverse detection channel are not required. The detection of the signal can directly determine whether the antenna is connected incorrectly. Compared with the prior art, the determination result of the embodiments of the present invention is accurate, the detection method is simple, and the sector antenna connection error can be detected with a high probability, avoiding the follow-up Disadvantages such as problems after operation and connection errors are difficult to locate. In the embodiments of the present invention, the connection error detection and the threshold comparison are performed inside the device. Compared with the prior art, the process of calculating and analyzing and adjusting according to the test result is omitted, which saves manpower, material resources and time.

7 is a structural diagram of an embodiment of a logic chip according to the present invention. As shown in FIG. 7, the logic chip of this embodiment includes: a storage module 704, configured to store an isolation threshold between antennas in the same sector;

The processing module 705 is connected to the storage module 704, and is configured to determine whether the isolation between the antennas in the same sector exceeds a set isolation threshold, and determine an antenna connection error when the threshold is exceeded.

This embodiment can be understood as comparing the error judgment and the isolation threshold in the processing unit in the foregoing device embodiments on a logic chip, such as an FPGA, a CPLD, etc., and performing some functions of the processing unit through a logic chip. The process of calculating and analyzing and adjusting according to the test results is saved, saving manpower, material resources and time.

The present invention can be embodied in a variety of different forms, and the technical solutions of the present invention are illustrated by taking the figures of FIG. 1 to FIG. 7 as an example, which does not mean that the specific examples applied to the present invention can be limited to In a specific process or embodiment structure, those skilled in the art should understand that the specific embodiments provided above are only some examples of various preferred uses, and any antenna that receives the antenna interface through the antenna port is in the same The transmission signal of the other antennas of the sector, and the method for detecting whether the antenna is connected incorrectly according to the received signal power should be guaranteed in the technical solution of the present invention. Within the scope of protection.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Claim

A detection method, comprising:

The detection method according to claim 1, wherein the detecting the isolation between the antenna to be tested and other antennas in the same sector comprises:

Receiving, by the antenna interface corresponding to the antenna to be tested, signals of other antennas in the same sector;

Detecting the received power of other antenna signals in the same sector;

Obtaining the difference between the transmit power of other antenna signals in the same sector and the received power of other antenna signals in the same sector as the isolation between the antenna to be tested and other antennas in the same sector.

The detecting method according to claim 2, wherein the signal received by the antenna interface corresponding to the antenna to be tested to receive other antennas in the same sector is:

When the antenna interface corresponding to the antenna to be tested does not transmit a signal, the signal of the other antennas in the same sector is received by the antenna interface corresponding to the antenna to be tested.

The detecting method according to claim 2, wherein the detecting the received power of the other antenna signals in the same sector comprises:

The received power of the other antenna signals in the same sector is detected by the reverse detection channel.

The detection method according to any one of claims 1-4, wherein when the antenna connection error is determined, the method further includes: triggering an alarm message that the antenna connection is incorrect.

The detection method according to any one of claims 1-4, wherein the preset isolation threshold is: greater than a maximum isolation between antennas of the same sector in the base station, smaller than the difference between the base stations Minimum isolation between sector antennas.

7. A detecting device, comprising:

The detecting device according to claim 7, wherein the detecting unit comprises:

An antenna interface for receiving signals of other antennas in the same sector;

a reverse detection channel, connected to the antenna interface, for detecting other antenna signals in the same sector received by the antenna interface Power of the number;

An isolation calculation unit, configured to acquire a difference between a transmit power of other antenna signals in the same sector and a power of the other antenna signals in the same sector, as the antenna to be tested and other antennas in the same sector The isolation between the two.

The detecting device according to claim 8, wherein the reverse detecting channel comprises: a reverse coupler connected to the antenna interface for transmitting/receiving signals of the reverse coupled antenna interface;

The detecting device according to any one of claims 7-9, wherein the processing unit comprises: a storage subunit, configured to store an isolation threshold;

The determining subunit is connected to the storage subunit, and is configured to determine an antenna connection error when the isolation between the antenna to be tested and other antennas in the same sector exceeds a preset isolation threshold;

The alarm subunit is connected to the judging subunit, and is configured to trigger an alarm information when the antenna connection is incorrect.

11. A logic chip, comprising: