JP2014072594A - Radio repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem of a conventional radio repeater that since only a signal of area identification information specified previously is relayed, change of location or addition of a base station, or extension of an area identification code after installation of the repeater cannot be dealt with.SOLUTION: Relocation of the installation place of a repeater is determined by using a base station identification code managed for each individual base station, and a sensor for detecting physical movement of the repeater.

Description

  The present invention relates to a radio relay apparatus in which a radio operator does not perform remote communication monitoring.

  In the conventional self-supporting wireless relay device, area identification information given to a radio signal that is to be relayed by the wireless relay device in advance is set. When the relay device receives a radio wave from the surrounding radio base station, the relay device decodes the radio signal and collates the area identification information included in the signal with preset area identification information. The relay device relays the radio signal only when the area identification information matches. If the area identification information does not match, the wireless relay device does not relay the received radio signal and does not emit radio waves. This prevents the wireless relay device from emitting unintended radio signals to prevent the quality of the service area provided by the wireless operator from being impaired, and general users not specified by the operator move the installation location of the relay device. This is to prevent infringement of the Radio Law. For example, Patent Literature 1 and Patent Literature 2 have techniques for wireless relay control.

JP 2008-301086 JP JP 2008-160346 A

  A conventional self-supporting wireless relay device adopts a method of relaying only a radio signal including area identification information set in advance in the relay device. For this reason, if there is a change or addition of the arrangement of neighboring base stations to be relayed after installation of the apparatus or an extension of the area identification code, it is impossible to automatically detect those changes and switch to an appropriate operation. In addition, radio signal from multiple base stations is received near the area boundary of radio areas with different area identification codes, so multiple different area identification codes will be detected. Depending on environmental fluctuations, the radio waves received by the relay device may become strong and weak, and the relay function may be repeatedly turned on and off unnecessarily, resulting in unstable wireless area formation by the relay device.

  To avoid this, if a common area identification management code is shared in a wide area, the area identification code to be detected even if the relay device moves within an area where radio waves including the same area identification code reach Therefore, it is not possible for a general user to arbitrarily change the installation position of the relay device, which hinders the formation of a wireless service area that is managed and constructed by a wireless operator.

  The relay function is turned on / off only by a unique area identification code as described above, and the relay device is operated without permission from another place by a general user arbitrarily moving the installation location or moving. Limiting this becomes an issue.

  As an example, a radio relay device according to the present invention receives a radio signal from the outside, reads a base station identification information included in the radio signal, and records in advance base station identification information included in the radio signal. When the base station information is collated, the wireless communication relay operation is controlled in the case of a match, the presence / absence of movement of the installation location of the relay device is determined in accordance with a pre-stored condition, and the movement is determined And a control unit for stopping the relay operation of the wireless communication in the previous period.

  It is possible to prevent the general user from moving the installation position of the wireless relay device. As a result, the telecommunications carrier can avoid the occurrence of inappropriate radio wave relay at the destination due to the wireless relay device being moved unintentionally.

  If there is no determination that there is movement, the relay operation will continue regardless of changes in the surrounding wireless environment, so the relay function will not turn off / on due to changes in the surrounding radio environment and will not be in the wireless service area. On the other hand, a stable radio wave can be provided.

It is a main block diagram of the radio relay device of the present invention. It is an example of operation flow It is an example of sensor detection of the wireless relay device of the present invention. It is the example 1 of a judgment at the time of collation operation.

  Hereinafter, examples will be described with reference to the drawings.

  FIG. 1 shows a main block diagram of a radio relay apparatus in this embodiment. A radio receiving unit (101) that receives a radio signal to be relayed from a peripheral base station and acquires information such as a signal level and a base station identification code based on the received radio signal, a radio for transmitting the received radio signal A transmission unit (102), a data storage unit for storing a base station identification code included in a radio signal to be relayed, other neighboring base station information acquired by period monitoring, and a program for controlling the radio relay device ( 103), a control unit (109) for controlling each block constituting the wireless relay device, a timer unit (105) for managing the monitoring period, sensor operation time, and power-off time, and the wireless relay device physically moving A sensor unit (104) for detecting that the power has been supplied, a power unit (107) for supplying power to the device, an alarm display unit (108) for notifying the user of the device status, and backing up the stored data. Battery for supplying power to detect a sensor operation in a power-off to composed (106).

  FIG. 2 is a diagram illustrating an operation flow of the wireless relay device according to the present embodiment. First, the setting of the target radio wave to be relayed is registered in advance in the wireless relay device (201). The setting is base station identification information obtained from radio signals from neighboring base stations received by the relay apparatus. In this embodiment, the base station unique ID (BTS ID) and PN (Pseudo Noise) code are used. The control unit of the relay device detects a radio signal received from a neighboring base station when it is installed and turned on. The radio signal is analyzed and the frequency and reception level are measured, while the BTS ID and PN code, which are base station identification information, are read (202) to check whether the information matches the information registered in the relay device in advance. (203).

  If the collation results match, the relay device starts relaying the target radio wave, but if they do not match, the relay operation is not performed (204). It should be noted that at this point in time, the verification target is whether or not the radio wave to be relayed is received, and the relay operation is not stopped even when radio waves other than the relay target are received. However, all received radio waves received by the relay apparatus including the relay target radio waves may be stored in the apparatus as detection results.

  After the relay radio wave is emitted, the relay device periodically monitors the radio waves from the neighboring base stations received by itself (205). This monitoring cycle is programmable, and it is possible to change the setting for each relay device by an operator or an installer designated by the operator. The monitoring targets are the frequency of the base station radio wave received by the relay device, the BTS ID, the PN code, and the reception level.

  The periodic peripheral base station radio wave monitoring results are compared with the previous monitoring results and peripheral base station information detected during installation each time (206). The collation result here does not limit unauthorized movement of the relay device, avoids unnecessary relay operation when the base station information around the relay device is changed, and the problem to be solved by the present invention This is used to prevent malfunction of the repeater due to temporary changes in the surrounding radio wave environment.

  Therefore, instead of continuing or stopping the relay operation with a single periodic monitoring result, it is necessary to determine whether there is continuity (coincidence) in the periodic monitoring results for several times, and the neighboring base stations at the time of installation. It is also possible to compare the difference with the information. The setting for the number of times of continuation is programmable, and the wireless operator or an installer designated by the wireless operator can be changed for each relay device in the same manner as the monitoring cycle.

  If there is no difference between the periodic monitoring result of the peripheral base station radio wave and the result of the comparison between the previous monitoring result and the peripheral base station information detected at the time of installation, the relay operation is continued (207). Subsequently, after the relay device is installed, it is detected whether the sensor unit 104 has detected movement or the power source unit 107 has detected power-off (207). If movement or power off is detected, the neighboring base station information is detected again from the radio signal received when the power is turned on next time, and the detection result is the detection result at the initial installation of the relay device and the Compare with the period monitoring result (208). The collation result here is for the purpose of restricting unauthorized movement of the relay device, and a standard different from the comparison collation standard during periodic monitoring during normal operation is provided. An example is shown in FIG. 6 where there is a power-off occurrence after installation. Here, as a result of data collation, the detected frequency itself does not change, but the detected frequency and the second frequency are interchanged. It is determined that the installation location of the relay device has been moved by comparing the difference between the power-off (or sensor-off if based on the sensor unit result) condition and the detection result, and radio wave emission is stopped. In this way, after setting an allowable range for the difference with the neighboring base station information detected at the time of initial installation, when the difference exceeds the condition set as the allowable range, it is determined that the installation location of the relay device has been moved, The relay operation after power-on is stopped (209). The setting for the allowable range and the condition is programmable, and the wireless carrier or the installation company designated by the wireless carrier can be changed for each relay device. In order to resume the operation of the relay device, the user confirms the alarm and requests maintenance from a communication carrier that manages the wireless relay device.

  Similarly to the power-off detection, a change in the state of a sensor provided in the relay device is also used as a condition for determining whether the relay device has been moved. When the relay device detects that the sensor is turned off after the relay device is installed, the neighboring base station information is detected again when the sensor is turned on next time as in the case of detecting power off. The comparison difference comparison judgment applies the same criteria as when the power is turned on after the power-off is detected. If the difference exceeds the conditions set as the allowable range, it is determined that the installation location of the relay device has been moved. The relay operation is stopped (209).

  FIG. 3 shows an operation example of the sensor of the wireless relay device according to the present embodiment. Although it is necessary to determine the position of the sensor according to the installation form of the relay device, the sensor is not visible from the outside when the relay device is fixed, and is provided at a position where it cannot be easily touched. In FIG. 3, a sensor is provided on the bottom surface of the relay device as an example. In Fig. 3 (a), the sensor is turned off before installation (301), but when the device is fixed, the sensor changes shape or position so that it enters the relay device. The operation to shift to the ON state is shown (302). In FIG. 3B, when the device is removed after installation and a distance is generated between the installation surface and the device, the sensor changes its shape or position again and shifts to the off state (303). Further, by providing a sensor on the bottom surface, which is the installation surface of the apparatus, the sensor unit cannot be operated from the outside after installation.

  The sensor state change is stored in the data storage unit of the relay device together with the detected time. In addition, when this sensor is in an off state, the relay device stops radio wave emission unconditionally. When the sensor shifts from the off state to the on state, the relay apparatus analyzes radio waves received from the neighboring base stations and acquires base station identification information of the received radio waves.

  After a wireless relay device is installed by the above method, it is possible to avoid an event that repeatedly stops and restarts the relay operation unnecessarily due to a temporary change in the surrounding radio wave environment. Therefore, it is possible to limit the use of the relay device in another place without permission.

Claims (4)

A receiving unit that receives a radio signal from the outside and reads base station identification information included in the radio signal;
The base station identification information included in the radio signal is collated with the prerecorded base station information, and if they match, the relay operation of the radio communication is controlled, and the presence / absence of movement of the installation location of the relay device is stored in advance. A wireless relay device comprising: a control unit that determines according to conditions and stops the relay operation of the previous period wireless communication when it is determined that there is movement.   The wireless relay device according to claim 1, wherein the control unit detects the movement when a physical movement is detected by the sensor unit or a power-off is detected by a power supply unit.   When the receiving unit receives a new radio signal, the control unit includes base station identification information included in the previously received radio signal, the pre-recorded base station information, and the new radio signal. The radio relay apparatus according to claim 1, wherein base station identification information included in the base station is collated.   The radio relay apparatus according to claim 1, wherein the base station identification information is a BTS ID and a PN code read from the radio signal.

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