JP4307409B2 - Recovery method and base station apparatus and base station system using the same - Google Patents

Description

  The present invention relates to a restoration technique, and more particularly, to a restoration method for restoring an abnormality of a base station apparatus, and a base station apparatus and a base station system using the restoration method.

Generally, a communication system includes a server and a plurality of devices connected via a communication line starting from the server. The server is connected to a higher-level control device and a network layer, and a tree-structured network environment is constructed. In such a network environment, when an abnormality or failure occurs in any of the devices, the communication of the devices existing below that device is interrupted. Therefore, it is necessary to quickly recover from a failure. Conventionally, as a method for solving such a problem, double lines are prepared in advance, and at least one of the lines is in a communicable state, thereby preventing communication disconnection when a failure occurs. (For example, refer to Patent Document 1). If double lines cannot be prepared in advance, the failure is automatically detected from a remote location, and the location of the failure, the method of recovery, etc. are instructed to the person who performs maintenance of the failed device. As a result, the time during which communication is interrupted is reduced (see, for example, Patent Document 2).
JP-A-6-252919 JP 2002-073158 A

  In general, a situation where a line that is not used or a device for line control must be provided regardless of a wired line or a wireless line is not preferable in terms of cost. Moreover, manual recovery is not only time consuming, but it can be said that no human error occurs.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a base station apparatus that can quickly and reliably recover from a failure without holding an extra line, and a base station apparatus thereof It is to provide a base station system including.

  In order to solve the above problems, a base station apparatus according to an aspect of the present invention includes a first transmission / reception unit that communicates with a server via a wired line and a second transceiver that communicates with a terminal apparatus via a wireless line. In the transmission / reception unit, the first transmission / reception unit, a detection unit that detects that an abnormality has occurred in the program executed for wired communication, and when the detection unit detects an abnormality, the second transmission / reception unit A control unit that requests a program from another base station device and updates the program in the first transmission / reception unit using the program transmitted from the other base station device.

  Here, “using the program to update the program in the first transmitting / receiving unit” includes rewriting to a new program. According to this aspect, the abnormality can be quickly recovered by downloading the program from the other base station apparatus using the line used for communication with the terminal apparatus.

  In addition, the control unit is configured to measure the received electric field intensity based on the signal transmitted from the other base station device via the second transmission / reception unit, and based on the result measured by the measurement unit, And a selection unit that selects another base station apparatus for requesting the program.

  According to this aspect, since the program can be obtained from the base station apparatus having a good communication environment, it is possible to download more reliably. In addition, since it is not necessary to have the program retransmitted many times, the recovery process can be performed at an early stage without affecting the system.

  Here, “select another base station device that requests the program based on the measured result” means that the communication environment with the base station device is good as a result of the measurement. For example, a base station device having the highest received electric field strength may be selected, and at least one base station having a received electric field strength exceeding a predetermined threshold value may be selected. A device may be selected.

  In addition, the control unit may request a program from each of a plurality of other base station devices via the second transmission / reception unit, and may synthesize and update the received programs.

  According to this aspect, by transmitting the same program from a plurality of other base station apparatuses, the reception diversity effect can be enhanced, and the program can be reliably obtained in the base station apparatus in which an abnormality has occurred. In addition, since the number of program retransmissions can be reduced, the recovery process can be performed at an early stage without affecting the system.

  In addition, the program is composed of a plurality of blocks, and the control unit selects a plurality of base stations that should request the program in units of blocks, and the plurality of other base station devices via the second transmitting / receiving unit. Each of the blocks included in the program may be requested, and the received program blocks may be combined and updated.

  According to this aspect, since a plurality of base station devices share and transmit each block, the download can be completed in a shorter time. Further, the recovery from the abnormality can be completed in a shorter time.

  In addition, if the control unit fails to receive the program sent from the other base station device in the second transmission / reception unit, the base station device other than the base station device that transmitted the program among the other base station devices, You may request a program.

  According to this aspect, since the program is transmitted from a base station device other than the base station device that has failed to be received, the abnormality can be recovered more reliably and quickly. This is because it is often preferable to give up transmission from the base station apparatus and transmit from another base station apparatus once the program reception has failed once or several times.

  Another aspect of the present invention is a base station system. The base station system includes a server and a plurality of base station apparatuses that communicate with the server via a wired line and that communicate with a terminal apparatus via a wireless line. When an abnormality occurs in a program for communicating with a server via a wired line in any one of the plurality of base station apparatuses, the base station apparatus establishes a wireless line with respect to the other base station apparatuses. The program is updated by using the requested program.

  According to this aspect, the abnormality can be quickly recovered by downloading the program from the other base station apparatus using the line used for communication with the terminal apparatus.

  In addition, when the other base station apparatus fails to receive the program in the base station apparatus in which an abnormality has occurred in the program, the base station apparatus in which an abnormality has occurred is programmed to another base station apparatus via the server. May be transmitted.

  According to this aspect, the base station apparatus other than the base station apparatus in which the abnormality has occurred cooperates to transmit the program for recovering the abnormality, so that the abnormality can be recovered more reliably and earlier. .

  Yet another embodiment of the present invention is a recovery method. This method includes a step of detecting that an abnormality has occurred in a program that performs wired communication, and when an abnormality is detected by the detection step, requests a program from another base station device via a wireless line, Updating based on a program transmitted from the base station apparatus.

  According to this aspect, the abnormality can be quickly recovered by downloading the program from the other base station apparatus using the line used for communication with the terminal apparatus.

  Yet another embodiment of the present invention is a program for causing a computer to execute. This program is executed for wired communication in a step of communicating with a server via a wired line, a step of communicating with a terminal device via a wireless line, and a step of communicating with the server. A detection step of detecting that an abnormality has occurred in the program to be detected, and when an abnormality is detected by the detection step, the program is requested to another base station device via a wireless line, and from the other base station device Updating the program for communicating with the server using the transmitted program.

  According to this aspect, the abnormality can be quickly recovered by downloading the program from the other base station apparatus using the line used for communication with the terminal apparatus.

  In addition, the updating step includes a step of measuring the received electric field strength based on a signal transmitted from another base station apparatus via a wireless line, and a result measured by the measuring step. Selecting another base station device for requesting.

  In the updating step, a program may be requested to each of a plurality of other base station apparatuses via a wireless line, and signals relating to the received programs may be combined and updated.

  In addition, the program is composed of a plurality of blocks, and the updating step selects a plurality of base stations that should request the program in units of blocks, and each of a plurality of other base station apparatuses via a wireless line On the other hand, each block included in the program may be requested, and each received program block may be synthesized and updated.

  In the updating step, when reception of a program sent from another base station device fails, the program may be requested to another base station device other than the base station device that transmitted the program.

  Further, the step of controlling the other base station apparatus is the base station apparatus in which an abnormality has occurred via a server to another base station apparatus when the program reception has failed in the base station apparatus in which the abnormality has occurred. In contrast, the program may be transmitted.

  It should be noted that any combination of the above-described constituent elements and a conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, etc. are also effective as an aspect of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, abnormality can be recovered early by downloading a program from another base station apparatus using the line | wire used for communication with a terminal device.

  Before describing the present invention specifically, an outline will be given first. An embodiment of the present invention includes a server, a base station device connected to the server via a wired line, and a terminal device connected to the base station device via a wireless line. The base station apparatus performs wired communication with the server by a program installed therein. The program includes processing for performing wired communication, and includes, for example, error correction processing and packet formation processing. The communication system according to the embodiment has an object of promptly restoring an abnormality to a base station apparatus in which an abnormality has occurred in a program related to wired communication in the configuration as described above. Although details will be described later, the base station apparatus in which an abnormality has occurred requests a program from another base station apparatus through a wireless line in which no abnormality has occurred.

  Here, the “server” includes a device that controls a plurality of base station devices, and may be, for example, a circuit switch or a device that controls handover of a terminal device. Further, the “terminal device” includes a wireless device that performs communication via a base station device, and may be, for example, a mobile phone, a second generation cordless phone system, A computer equipped with a wireless LAN (Local Area Network) may be used. The “program” includes an execution procedure for causing the hardware to execute an instruction, and may be an execution procedure described in C language, for example, or written in a machine language such as an assembler. It may be an executed procedure.

  FIG. 1 is a diagram illustrating a configuration example of a communication system 100 according to an embodiment of the present invention. The communication system 100 of FIG. 1 may be, for example, a mobile phone system or a second generation cordless phone system. The communication system 100 includes a terminal device 10, a first base station device 12a, a second base station device 12b, an Nth base station device 12n, and a server 14, which are collectively referred to as a base station device 12. In the communication system 100, when an abnormality occurs in a program for communicating with the server 14 in any one of the plurality of base station devices 12, for example, the first base station device 12a, the base station device 12 Recovers the abnormality by using a program sent from another base station apparatus 12, for example, the second base station apparatus 12b via a wireless line. Hereinafter, the base station apparatus 12 in which an abnormality has occurred is referred to as an “abnormal base station apparatus”. Further, another base station apparatus 12 that transmits a program to an abnormal base station apparatus is referred to as a “program transmission base station apparatus”.

  The server 14 connects a plurality of base station apparatuses 12. Further, the server 14 controls communication between the plurality of base station apparatuses 12. For example, a signal is input from the terminal apparatus 10 connected to the first base station apparatus 12a, and the signal is output to the terminal apparatus 10 connected to the second base station apparatus 12b.

  The base station apparatus 12 connects the server 14 to the wired interface, and connects the terminal apparatus 10 to the wireless interface. Moreover, the base station apparatus 12 has a transmission / reception function. Further, the server 14 has a call control function for controlling the call by supervising the plurality of base station apparatuses 12. That is, the base station apparatus 12 transmits / receives data to / from the terminal apparatus 10 by the transmission / reception function, and transfers the channel assigned to the terminal apparatus 10 to the server 14 having the call control function. Regarding the latter, the base station apparatus 12 defines a plurality of channels, and assigns one of them to the terminal apparatus 10. In the case of the second generation cordless telephone system, the channel may be a slot. Although only one terminal device 10 is illustrated, a plurality of terminal devices 10 may be provided. The channel in the server 14 includes a D channel and a B channel.

  FIG. 2 is a diagram illustrating a configuration example of the base station apparatus 12 of FIG. The base station apparatus 12 includes a first transmission / reception unit 20, a second transmission / reception unit 22, a detection unit 24, and a control unit 26. The base station device 12 is connected to the terminal device 10 at one end via a wireless line (not shown) and connected to the server 14 at the other end. With such a configuration, the base station apparatus 12 communicates with a plurality of terminal apparatuses 10. Further, the control unit 26 exchanges data with the first transmission / reception unit 20 and the second transmission / reception unit 22 to connect the channel in the terminal device 10 and the channel in the server 14.

  Here, the “first transmission / reception unit” includes a transmission unit, a reception unit, and the like for communicating with the server. For example, the “first transmission / reception unit” may include a line control device, a modulation / demodulation device, and the like. You may go out. The “second transmission / reception unit” includes a transmission unit, a reception unit, and the like for communicating with a terminal device, and may include, for example, an antenna or a device that processes a high-frequency signal, An error correction code decoding circuit or the like may be included. An “abnormality” may be, for example, a case where the program cannot be operated due to an old version of the program, and the program itself is destroyed or erased due to an external or internal factor. In some cases. That is, a case where a desired result cannot be obtained as a result of executing a program. The external factors include causes caused by physical or chemical impacts on the hardware. The internal factor includes a cause caused by a virus program for destroying a program or a system.

  The first transmission / reception unit 20 performs communication with the server 14 through a wired line. Communication with the server 14 is controlled or executed by a program (not shown) incorporated in the first transmission / reception unit 20. The program causes the first transmitter / receiver 20 to execute a process of transmitting a signal from the terminal device 10 to the server 14 via the second transmitter / receiver 22 and transmitting a signal from the server 14 to the terminal device 10. If an abnormality occurs in this program, communication between all terminal devices 10 connected to the base station device 12 is cut off until the abnormality is recovered. Therefore, it is necessary to quickly recover by the method described later.

  The second transmission / reception unit 22 executes communication with the terminal device 10 by assigning a channel on the wireless line. That is, it has a transmission / reception function in the base station apparatus 12 of FIG. For this reason, the second transmission / reception unit 22 includes, for example, an amplification function, and may include a frequency conversion function, a modulation / demodulation function, an error correction function, a retransmission function, and the like. The base station apparatus 12 defines a frame composed of a plurality of channels. Here, it is assumed that the frame configuration is the same as the frame configuration in the second generation cordless telephone system.

  The second transmission / reception unit 22 receives a signal from the terminal device 10 (not shown) via a wireless line as a function for reception among the transmission / reception functions, and performs frequency conversion on the received signal. Further, the frequency-converted signal is demodulated and output to the first transmission / reception unit 20. On the other hand, as a function for transmission in the transmission / reception function, the second transmission / reception unit 22 receives a signal from the first transmission / reception unit 20 and modulates the received signal. Further, frequency conversion is performed on the modulated signal, and the frequency-converted signal is transmitted to the terminal device 10 via a wireless line. The control unit 26 may control the power when transmitting.

  The detection unit 24 detects that an abnormality has occurred in the program included in the first transmission / reception unit 20, and sends a signal indicating that an abnormality has occurred to the control unit 26. For example, the abnormality is detected by checking whether the program is configured in a desired manner by a checksum or the like, or by using specific test data, the output signal of the program or the output data is specified data. It may be detected by checking whether or not it corresponds to the above.

  The control unit 26 controls the first transmission / reception unit 20, the second transmission / reception unit 22, and the detection unit 24. When an abnormality is detected by the detection unit 24, the control unit 26 requests the second transmission / reception unit 22 to send a program to the program transmission base station device, and based on the program transmitted from the program transmission base station device, The program of the first transmitting / receiving unit 20 is updated. The transmitted program is a program for recovering a program in which an abnormality has occurred and returning it to a normal state. “Updating the program of the first transmission / reception unit based on the program” includes rewriting the program with a normal program, etc., and recovering the program abnormality by executing the program, etc. Including.

  Further, the control unit 26 may measure the received electric field intensity based on the signal transmitted from the program transmission base station apparatus, and select the program transmission base station apparatus that should transmit the program based on the measurement result. . In addition, the control unit 26 may cause each of the plurality of program transmission base station devices to request a program and combine the received programs to recover the abnormality. Here, “combining” includes reception diversity combining and the like, and may be, for example, maximum likelihood combining. In addition, among the received programs, a signal related to a program having a good reception state may be selected and synthesized. Further, the synthesis may be performed at the antenna end of the abnormal base station apparatus, or may be performed after demodulation or decoding.

  When the program is composed of a plurality of blocks, the control unit 26 requests each of the plurality of program transmission base station devices to distribute each of the program blocks, and synthesizes the received program blocks. Recover the error. Here, “a plurality of blocks” includes a plurality of parts constituting the program, and may be, for example, any one of a plurality of functions included in the program, or executes the program. It may be data or definition files that are necessary for the execution.

  In addition, when the second transmission / reception unit 22 fails to receive the program transmitted from the program transmission base station device, the control unit 26 may request the program from the base station device 12 other than the program transmission base station device. Good. In addition, the control unit 26 in the program transmission base station device, when reception of the program fails in the abnormal base station device, sends a program to the abnormal base station device via the server 14 to another base station device 12. May be transmitted.

  In addition, “when reception fails” includes cases where the communication environment is poor and thus cannot be received normally. For example, the case where the reception fails as a result of reception, and the case where demodulation is possible. Even if it is a case, the case where it received in the aspect which cannot operate | move normally as a program is also included. That is, a case where a desired program cannot be acquired. Further, “another base station device” includes an abnormal base station device, a base station device 12 other than the program transmission base station device, and the like, for example, a base station device that can normally transmit a program. Alternatively, the base station device 12 selected by the selection of the server may be used. Further, “through a server” includes a mode in which a program is transmitted from another base station device to a base station device in which an abnormality has occurred through the server, for example, a base station device that transmits a program selected by the server May be a mode in which the program is transmitted from the server, or the server may not do anything, and may be a mode in which the designated instruction signal is transmitted from the program transmission base station device to the designated base station device. Good.

  FIG. 3 is a diagram illustrating a configuration example of the control unit 26 of FIG. The control unit 26 includes an update unit 30, a selection unit 32, and a measurement unit 34. The measuring unit 34 measures the received electric field strength, for example, RSSI (Received Signal Strength Indicator), based on the signal transmitted from the program transmission base station apparatus. Here, the “signal” includes a control signal for estimating the communication environment, and may be, for example, a known signal or a control signal. Further, the selection unit 32 selects a program transmission base station apparatus that requests a program based on the result measured by the measurement unit 34. The control unit 26 causes the second transmission / reception unit 22 to request each of the program transmission base station devices, and the update unit 30 recovers the abnormality of the program using a signal related to the received program.

  These configurations can be realized in terms of hardware by a CPU, memory, or other LSI of an arbitrary computer, and in terms of software, they are realized by a program having a communication function loaded in the memory. The functional block realized by those cooperation is drawn. Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms by hardware only, software only, or a combination thereof.

  The operation of the base station apparatus 12 having the above configuration will be described using FIG. 4 and FIG. FIG. 4 is a diagram illustrating a first flowchart illustrating an operation example of the abnormal base station device among the base station devices of FIG. 1. First, the detection unit 24 detects an abnormality of a program included in the first transmission / reception unit 20 (S10). Next, the abnormal base station device switches the operation to the operation of the terminal device (S12). In the abnormal base station apparatus, since the program is abnormal, wired communication cannot be performed and only wireless communication is possible. Therefore, by switching to the operation of the terminal device, the program transmission base station device can send the program to the abnormal base station device as the terminal device. Next, the selection part 32 selects the program transmission base station apparatus of a call destination (S14), and performs a call (S16). Calling means transmitting a preparation signal for starting communication to the program transmission base station apparatus.

  When the call is successful (Y in S18), that is, when preparation for communication is established and the number of times received from the program transmission base station apparatus is equal to or less than a predetermined threshold (S20) Y), the control unit 26 starts downloading the program via the second transmitting / receiving unit 22 (S22). On the other hand, if the call is not successful (N in S18), or if the number of downloads exceeds a predetermined number (N in S20), the download from the target base station apparatus is stopped, and again Then, the program transmission base station apparatus of the call destination is selected (S14). The case where the call is not successful may be a case where the communication environment between the base station devices is poor. In addition, when the number of downloads exceeds a predetermined number, it is not preferable in terms of system efficiency to place an unnecessary load on the program transmission base station device of the call destination. I will give up downloading from the device.

  If the download is successful (Y in S24), the update unit 30 updates using the downloaded program. Further, the control unit 26 switches the base station device 12 from the operation of the terminal device to the operation of the base station device (S26), and ends this operation. On the other hand, when the download is not successful (N in S24), the control unit 26 requests retransmission of the program.

  FIG. 5 is a diagram illustrating a first flowchart illustrating an operation example of the program transmission base station apparatus in the base station apparatus of FIG. 1. The first flowchart showing an operation example of the program transmission base station apparatus shows an operation flow in the program transmission base station apparatus that transmits the program to the abnormal base station apparatus. First, the program transmission base station apparatus receives a signal (LinkChannel; hereinafter abbreviated as “LCH”) for establishing communication from the abnormal base station apparatus (S28). Next, it is determined whether or not LCH can be allocated (S30). The allocation may be determined based on whether or not the number of terminal devices that can already communicate exceeds a predetermined number. If it is determined that LCH allocation cannot be performed (N in S30), a signal indicating that LCH allocation is rejected is transmitted to the abnormal base station apparatus (S32), and the operation is terminated. On the other hand, when it is determined that the LCH can be allocated (Y in S30), the LCH is allocated (S34) and the program is transmitted (S36).

  Next, a modification of the embodiment of the present invention will be shown. An outline will be given before a specific modification of the embodiment of the present invention is described. In the modified example, even if the abnormal base station device cannot make a call, it is a process for performing a process for recovering the abnormality without calling again. When the abnormal base station apparatus cannot make a call, that is, when communication cannot be established with the program transmission base station apparatus, the program transmission base station apparatus communicates with the server 14 with the abnormal base station apparatus. A request is made to search for another program transmission base station apparatus (hereinafter referred to as “program transmission capable base station apparatus”) that can make a call. The server 14 searches for the searched program-transmittable base station device and requests the program-transmittable base station device to transmit the program to the abnormal base station device. By such an operation, the necessity of re-calling to other base station apparatuses is reduced, and it is not necessary to transmit a signal for calling, so that limited radio wave resources can be used efficiently. The detailed operation will be described below with reference to FIGS. In addition, the same code | symbol is attached | subjected about the part which is common in the Example mentioned above, and description is simplified.

  FIG. 6 is a diagram illustrating a second flowchart illustrating an operation example of the abnormal base station device in the base station device 12 of FIG. 1. In the second flowchart showing an operation example of the abnormal base station apparatus, first, the detection unit 24 detects an abnormality of the program included in the first transmission / reception unit 20 (S110), and the operation of the abnormal base station apparatus is terminated. The operation is switched to the operation of the apparatus (S112), and further, the program transmission base station apparatus as the call destination is selected (S114), and the call is made (S116). If the call is successful (Y in S118), the control unit 26 starts downloading the program from the program transmission base station device via the second transmission / reception unit 22 (S122), and the update unit 30 downloads the downloaded program. Use to update the program. Further, the control unit 26 switches the abnormal base station device from the operation of the terminal device to the operation of the base station device (S126), and ends this operation.

  On the other hand, if the call has not been successful (N in S118), it waits for an incoming call from the program-transmittable base station device (S138). An incoming call is a concept opposite to an outgoing call and includes receiving a signal for establishing communication. When the abnormal base station apparatus receives a signal from the base station apparatus capable of transmitting a program (S140), the abnormal base station apparatus recovers the abnormal state as described above by performing a program download process (S122).

  FIG. 7 is a diagram illustrating a second flowchart illustrating an operation example of the program transmission base station apparatus in the base station apparatus 12 of FIG. In the second flowchart showing an operation example of the program transmission base station apparatus, first, the program transmission base station apparatus receives an LCH for establishing communication from the base station apparatus of the base station apparatus 12 of FIG. 1 (S128). ), It is determined whether or not LCH can be allocated (S130). When determining that the LCH can be allocated (Y in S130), the program transmission base station apparatus allocates the LCH (S134) and transmits the program (S136).

  On the other hand, if it is determined that LCH allocation cannot be performed (N in S130), the program transmission base station apparatus transmits a signal indicating that LCH allocation is rejected to the abnormal base station apparatus (S132) and the server 14 communicates a signal notifying that the allocation of the LCH to the abnormal base station apparatus has been rejected (S142).

  FIG. 8 is a flowchart illustrating an operation example of the server 14 of FIG. The server 14 receives the LCH allocation refusal notification from the program transmission base station apparatus (S144), and searches for a program-transmissible base station apparatus with an empty channel (S146). Specifically, a search is made for a program-transmittable base station device that can assign an LCH to an abnormal base station device. If there is a program-transmittable base station apparatus, the program-transmittable base station apparatus is requested to transmit a signal for causing the abnormal base station apparatus to receive a call (S148).

  FIG. 9 is a diagram illustrating a flowchart illustrating an operation example of the base station apparatus capable of program transmission in the base station apparatus 12 of FIG. The program-transmittable base station apparatus first receives an incoming call transmission instruction request from the server 14 (S50). Next, an incoming call is transmitted to the abnormal base station apparatus (S52). Next, a request signal for establishing LCH is received from the abnormal base station apparatus (S54), and LCH is allocated to the abnormal base station apparatus (S56). Finally, the program is transmitted to the abnormal base station device (S58).

  Next, another modification of the embodiment of the present invention will be shown. Another modification of the embodiment of the present invention is the case where the communication system 100 of FIG. 1 is a nanocell base station system, and when an abnormality occurs in a wireless device included in the system, the same as the above-described embodiment. Recover the abnormality. In addition, the same code | symbol is attached | subjected about the part which is common in the Example mentioned above, and description is simplified. FIG. 10 shows a configuration of a communication system 200 according to another modification of the embodiment of the present invention. The communication system 200 includes a terminal device 110, a first base station system 120a, a second base station system 120b, an Nth base station system 120n, and a public network 114, which are collectively referred to as a base station system 120. In addition, the communication system 200 includes a first wireless device 122a, a second wireless device 122b, a third wireless device 122c, a fourth wireless device 122d, and a first LAN cable 126a that are collectively referred to as a wireless device 122, a LAN cable 126, A second LAN cable 126b, a third LAN cable 126c, a fourth LAN cable 126d, and a control device 124 are included.

  If an abnormality occurs in a program for communicating with the control device 124 in any of the wireless devices 122, the abnormality is recovered by requesting the program from the other wireless device 122 as in the above-described embodiment. To do. Here, the other wireless device 122 that requests the program may be the wireless device 122 in the same base station system, or may be the wireless device 122 in another base station system. In this case, the control device 124 that controls the wireless device 122 in which an abnormality has occurred may request another base station system 120 to send the program to the wireless device 122 via the public network 114. Note that the operation for recovering the abnormality is the same as the operation described above, and a description thereof will be omitted. In the following, the configuration and operation unique to this embodiment will be described in detail.

  The wireless device 122 performs communication with the terminal device 110 by assigning a channel in the wireless network. The wireless device 122 has an amplification function, a frequency conversion function, a modulation / demodulation function, an error correction function, a retransmission function, and the like. The wireless device 122 defines a frame composed of a plurality of channels. Here, it is assumed that the frame configuration is the same as the frame configuration in the second generation cordless telephone system. However, the wireless device 122 does not have a call control function. Further, one of the first wireless device 122a to the fourth wireless device 122d is defined as a reference device. Here, the first radio apparatus 122a is used as a reference apparatus. Further, the channel timing in the wireless devices 122 other than the first wireless device 122a is synchronized with the channel timing in the first wireless device 122a. Note that the second base station system 120b and the like also include a plurality of wireless devices 122 like the first base station system 120a. Also, the number of wireless devices 122 provided in one communication system 200 may be other than “4”.

  A control device 124 as a server is connected to a plurality of wireless devices 122 via a LAN cable 126 at one end and to the public network 114 at the other end. With such a configuration, the control device 124 communicates with the plurality of wireless devices 122. Further, the control device 124 connects the channel in the wireless device 122 and the channel in the public network 114 by a call control function. The control device 124 is provided with the control functions in each wireless device 122 in an integrated manner. Therefore, since it is not necessary to provide each wireless device 122 with a control function, cost reduction and size reduction are facilitated.

  FIG. 11 is a sequence diagram showing a procedure for starting a call by the communication system 200 of FIG. The first radio apparatus 122a transmits a control signal to the terminal apparatus 110 (S200). The terminal device 110 establishes timing synchronization with the first wireless device 122a based on the control signal (S202). The terminal device 110 transmits a link channel establishment request to the first wireless device 122a (S204). The first radio apparatus 122a transmits the link channel assignment to the terminal apparatus 110 (S206). The first radio apparatus 122a transmits TCH activation completion to the control apparatus 124 (S207). The terminal device 110 transmits the CC call setting to the first wireless device 122a (S208). The first wireless device 122a transmits a call request to the control device 124 (S209). The control device 124 transmits a transmission capability notification to the first wireless device 122a (S210). In addition, the control device 124 transmits a call confirmation to the first wireless device 122a (S211). The first radio apparatus 122a transmits a CC call setting acceptance to the terminal apparatus 110 (S212). The terminal device 110 transmits an RT definition information request to the first wireless device 122a (S213). The first radio apparatus 122a transmits an RT definition information response to the terminal apparatus 110 (S214).

  The terminal device 110 transmits an RT function request to the first wireless device 122a (S216). The first radio apparatus 122a transmits an RT function request response to the terminal apparatus 110 (S218). The terminal device 110 transmits the RT secret key setting to the first wireless device 122a (S220). The terminal device 110 transmits an MM function request to the first wireless device 122a (S222). The first radio apparatus 122a transmits an MM function request response to the terminal apparatus 110 (S224). The first wireless device 122a transmits an authentication start to the control device 124 (S226). The control device 124 transmits an authentication request to the first wireless device 122a (S228). The first wireless device 122a transmits an authentication request to the terminal device 110 (S230). The terminal device 110 transmits an authentication response to the first wireless device 122a (S232). The first wireless device 122a transmits an authentication response to the control device 124 (S234).

  The control device 124 transmits the call setting to the public network 114 (S236). The public network 114 transmits a call setting acceptance to the control device 124 (S238). Through the above processing, the channel in the first wireless device 122a and the channel in the public network 114 are connected. The public network 114 transmits a call to the control device 124 (S240). The control device 124 transmits a call to the first wireless device 122a (S242). The first radio apparatus 122a transmits a CC call to the terminal apparatus 110 (S244). The public network 114 transmits a response to the control device 124 (S246). The control device 124 transmits a response to the first wireless device 122a (S248). The first radio apparatus 122a transmits a CC response to the terminal apparatus 110 (S250). The control device 124 transmits a response confirmation to the public network 114 (S252). The terminal device 110 and the public network 114 execute a call (S254).

  According to the embodiment of the present invention, it is possible to quickly and reliably recover from a failure without holding an extra line. Also, by downloading a program from the program transmission base station device using the wireless channel used for communication with the terminal device, the channel can be used effectively and the abnormality can be recovered at an early stage. Also, by downloading the program from the program transmission base station apparatus using the line used for communication with the terminal device, the line can be effectively used and the abnormality can be recovered at an early stage. Further, by transmitting the same program from a plurality of program transmission base station apparatuses, the transmission power of the program can be increased, and the program can be reliably obtained in the base station apparatus in which an abnormality has occurred. In addition, since the number of program retransmissions can be reduced, the recovery process can be performed at an early stage without affecting the system.

  In addition, since a plurality of base station apparatuses share the respective blocks included in the program, the download can be completed in a shorter time. Further, the recovery from the abnormality can be completed in a shorter time. Further, since the program is transmitted from the base station apparatus 12 other than the program transmission base station apparatus that has failed to be received, the abnormality can be recovered more reliably and promptly. This is because it is considered that it is often preferable to give up transmission from the program transmission base station apparatus and transmit from another program transmission base station apparatus once reception of the program has failed once or several times. Also, by downloading the program from the program transmission base station apparatus using the line used for communication with the terminal device, the line can be effectively used and the abnormality can be recovered at an early stage. Further, the base station apparatus other than the abnormal base station apparatus can recover the abnormality more reliably and earlier by transmitting the program in cooperation. In addition, since the necessity of re-calling to other base station apparatuses is reduced and there is no need to transmit a signal for calling, radio wave resources can be used efficiently.

  In the above, this invention was demonstrated based on the Example. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention. .

It is a figure which shows the structural example of the communication system concerning the Example of this invention. It is a figure which shows the structural example of the base station apparatus of FIG. It is a figure which shows the structural example of the control part of FIG. It is a figure which shows the 1st flowchart which shows the operation example of an abnormal base station apparatus among the base station apparatuses of FIG. It is a figure which shows the 1st flowchart which shows the operation example of a program transmission base station apparatus among the base station apparatuses of FIG. It is a figure which shows the 2nd flowchart which shows the operation example of an abnormal base station apparatus among the base station apparatuses of FIG. It is a figure which shows the 2nd flowchart which shows the operation example of a program transmission base station apparatus among the base station apparatuses of FIG. It is a figure which shows the flowchart which shows the operation example of the server of FIG. It is a figure which shows the flowchart which shows the operation example of the base station apparatus which can transmit a program among the base station apparatuses of FIG. The structure of the communication system which concerns on another modification of the Example of this invention is shown. It is a sequence diagram which shows the procedure of the telephone call start by the communication system of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 terminal device, 12 base station apparatus, 14 server, 20 1st transmission / reception part, 22 2nd transmission / reception part, 24 detection part, 26 control part, 32 selection part, 34 measurement part, 100 communication system.

Claims (9)

A first transmission / reception unit that communicates with a server via a wired line;
A second transmitting / receiving unit that communicates with a terminal device via a wireless line;
A detection unit for detecting that an abnormality has occurred in a program executed for wired communication in the first transmission / reception unit;
When an abnormality is detected by the detection unit, the first transmission / reception unit uses the program transmitted from the other base station device to request a program to the other base station device via the second transmission / reception unit. A control unit for updating the program in
A base station apparatus comprising: The controller is
A measurement unit that measures the received electric field strength based on a signal transmitted from another base station device via the second transmission / reception unit;
A selection unit that selects another base station device for requesting the program based on the result measured by the measurement unit;
The base station apparatus according to claim 1, comprising:   The said control part requests | requires the said program to each of several other base station apparatuses via the said 2nd transmission / reception part, synthesize | combines each received program, and updates. Base station equipment. The program is composed of a plurality of blocks,
The control unit uses the block as a unit to select a plurality of base station apparatuses that should request a program, and the second transmission / reception unit to each of the plurality of base station apparatuses. 2. The base station apparatus according to claim 1, further comprising means for requesting each of the included blocks and means for combining and updating each received block of the program. In the control unit,
When the second transmitter / receiver fails to receive the program sent from another base station device, the program is sent to a base station device other than the base station device that transmitted the program among other base station devices. The base station apparatus according to claim 1, wherein the base station apparatus requests the base station apparatus. Server,
A plurality of base station devices that communicate with the server via a wired line and communicate with a terminal device via a wireless line;
With
In any one of the plurality of base station devices, when an abnormality occurs in a program for communicating with a server via a wired line, the base station device wirelessly transmits to another base station device. A base station system that updates a program in which the abnormality has occurred by using a program requested via a line.   When the other base station apparatus fails to receive the program in the base station apparatus in which an abnormality has occurred in the program, the base station in which the abnormality has occurred via a server to another base station apparatus The base station system according to claim 6, wherein the program is transmitted to a device. In the base station device,
Detecting an abnormality in a program that performs wired communication; and
If an abnormality is detected in the detecting step, the program that requests the program from another base station apparatus via a wireless line and an abnormality has occurred based on the program transmitted from the other base station apparatus A step of updating
A recovery method comprising: In any one of a plurality of base station devices,
Communicating with the server via a wired line;
Communicating with a terminal device via a wireless line;
Detecting an abnormality in a program executed for wired communication in the step of communicating with the server; and
When an abnormality is detected in the detecting step, the program is requested to another base station apparatus via a wireless line, and communication with the server is performed using the program transmitted from the other base station apparatus. Updating the program to perform
A program that causes a computer to execute.

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