KR101613817B1 - Radio management device, communication system, and communication method - Google Patents

Abstract

A radio management apparatus according to an embodiment of the present invention is a radio management apparatus for managing a radio relay apparatus group forming a radio communicable area, and includes first transmitting means and second transmitting means. The first transmission means transmits to the first radio relay apparatus determined based on the distance between the adjacent radio relay apparatuses and the radio communication distance when the transmission power of the antenna of the radio relay apparatus is increased, And transmits a first control command for increasing the transmission power. The second transmitting means transmits a second control command for executing the handover of the radio terminal connected to the second radio relay apparatus to the second radio relay apparatus adjacent to the first radio relay apparatus, .

Description

Technical Field [0001] The present invention relates to a radio management apparatus, a communication system,

<Citation of related application>

This application is based on and claims the benefit of priority of Japanese Patent Application No. 2012-136074 filed on June 15, 2012. This application is incorporated by reference in its entirety for all purposes.

Embodiments of the present invention relate to a wireless management apparatus, a communication system, and a communication method.

Conventionally, countermeasures against areas and countermeasures against traffic accompanying increase in mobile data traffic have been proposed mainly for outdoor devices. However, it is expected that importance of area countermeasures and traffic countermeasures will increase even indoors. Installing a femto cell base station or a pico cell base station indoors is an area countermeasure and traffic countermeasure. However, since each of the base stations is operated independently, the maintenance operation function can not be realized in cooperation with each other.

As one of the maintenance operation functions, there is a file update function of the base station. The file update involves a reset operation to initiate operation in the new program. Therefore, at the time of updating the file, the base station can not be brought into a temporary operation stop state. As a result, there has been a problem in that a dead zone is generated after the reset and until the base station is activated again, thereby affecting the end user.

Therefore, a technique of resetting one of the plurality of base stations and continuing the radio communication of the other base station has been proposed.

However, when the base station is reset, the wireless communication terminal can not access the communication area occupied by the base station. Particularly, in the case of indoor use, even if the communicable area becomes narrow, since there are few radio communication terminals to be affected, it is not considered to solve such a situation very much.

A problem to be solved by the present invention is to provide a radio management apparatus, a communication system, and a communication method capable of reducing an influence on end user communication upon resetting.

A wireless management apparatus according to an embodiment of the present invention is a wireless management apparatus for managing a wireless communication relay apparatus group forming a wireless communicable area, the wireless management apparatus comprising first transmitting means and second transmitting means. The first transmitting means transmits the distance between the adjacent radio relay apparatuses of the group of radio relay apparatuses and the first radio relay apparatuses determined based on the distance capable of radio communication when the transmission power of the antennas of the radio relay apparatuses is increased, A first control command for increasing the transmission power is transmitted. The second transmitting means transmits to the second radio relay apparatus adjacent to the first radio relay apparatus a second control command for handing over the radio terminal connected to the second radio relay apparatus, And transmits a reset command to the relay device.

According to the radio management apparatus, the communication system, and the communication method of the embodiments, it is possible to reduce the influence on the communication of the end user at the time of resetting.

1 is a block diagram showing a functional configuration of a wireless communication system according to an embodiment;
2 is a block diagram showing the configuration of a management apparatus and a first base station according to the embodiment;
3 is a diagram showing an example of a table provided in the reset group list storage unit;
4 is a diagram showing a communication area in which a first base station and a second base station can communicate with each other in a normal operation;
5 is a diagram showing a communication area covered by a second base station at the time of updating a file of the first base station;
6 is a diagram showing a flow in which a plurality of base stations complement each other's communication area during file updating;
7 is a diagram showing another example of a table provided in the reset group list storage unit;
8 is a diagram showing a communication area in which each of a plurality of base stations in a normal operation can communicate.
9 is a diagram showing communication areas covered by the second base station and the third base station at the time of file update by the first base station and the fourth base station;
Fig. 10 is a flowchart showing a procedure of overall processing relating to file update of each base station in the communication system according to the embodiment; Fig.
11 is a diagram showing a hardware configuration of a management apparatus according to an embodiment and a modification.

(Embodiments)

1 is a block diagram showing a functional configuration of a wireless communication system according to an embodiment. The wireless communication system shown in Fig. 1 has a management apparatus 100 and base stations BS1, BS2, BS3, and BS4 in a house 151. [

The management apparatus 100 is connected to the maintenance network 171 and the communication network 172. The maintenance network 171 includes a centralized monitoring device 161. The centralized monitoring apparatus 161 monitors and controls all the base stations of the mobile communication service provider.

In this embodiment, the management apparatus 100 is disposed between the base stations BS1, BS2, BS3, and BS4, the communication network 172, and the maintenance network 171. [

The management apparatus 100 is connected to the base stations BS1, BS2, BS3, and BS4 disposed in the indoor area 151 and transmits commands and the like for controlling the base stations BS1, BS2, BS3, and BS4. In the example shown in Fig. 1, although omitted for the sake of explanation, more than four base stations may be arranged in the indoor area 151. Fig. In addition, the present embodiment does not limit the number of base stations to be connected.

The base stations BS1, BS2, BS3, and BS4 are connected to the wireless communication terminals 181 and 182 through wireless communication lines. Thereby, the radio communication terminals 181 and 182 are connected to the communication network 172 via the base stations BS1, BS2, BS3 and BS4. That is, the base stations BS1, BS2, BS3, and BS4 are wireless repeaters that form a wireless communicable area.

Further, in this embodiment, when the combination 191 of the base stations BS1 and BS4 is reset, the base stations BS2 and BS3 are controlled such that the combination 192 of the base stations BS2 and BS3 covers the communication area. Further, when the combination 192 of the base stations BS2, BS3 is reset, the base stations BS1, BS4 are controlled so that the combination 191 of the base stations BS1, BS4 covers the communication area. It is assumed that the base stations BS1, BS2, BS3, and BS4 are adjacent to each other.

In order to realize this, the management apparatus 100 controls the base station included in the combination of the base stations 191 and 192 to perform the reset accompanied by the file update, BS2, BS3, BS4 so as to increase the transmission power of the base station adjacent to the reset base station. Thereby, the communication area of the base station that has performed the reset is supplemented by the base station that has increased the transmission power.

Further, the management apparatus 100 controls the base station to be reset so as to transmit a handover instruction to the connected wireless communication terminal. Then, the management apparatus 100 controls the base station to be reset so that the connected radio communication terminal resets its own station at the time when the handover is completed. Thereby, the file update of the base station can be realized without affecting the call (call) being connected.

2 is a block diagram showing the configuration of the management apparatus 100 and the configuration of the first base station BS1 according to the present embodiment.

The first base station BS1 includes a radio section 251, a transmission power setting section 252, a call control section 253 and a first communication interface section 254. [ Other base stations (e.g., BS2, BS3, and BS4) have the same configuration as that of the first base station BS1, and a description thereof will be omitted.

The radio section 251 transmits and receives data to and from the radio communication terminals 181 and 182 via a radio communication line. The present embodiment does not limit the wireless communication line. For example, IEEE (R) 802.11 wireless local area network (WLAN) can be used as the wireless communication line.

The transmission power setting unit 252 sets the transmission power when the radio unit 251 transmits data. The transmission power setting unit 252 according to the present embodiment can change the range in which the first base station BS1 can perform wireless communication, that is, the communication area by changing the transmission power.

The call control unit 253 controls the call between the first base station BS1 connected via the radio unit 251 and the radio communication terminal (for example, the radio communication terminal 181). The call control unit 253 according to the present embodiment establishes a communication channel by call control of a wireless communication terminal (for example, the wireless communication terminal 181), and controls the wireless communication terminal (for example, the wireless communication terminal 181) And the communication network 172, as shown in FIG.

The call control section 253 also transmits a handover command to the radio communication terminal (for example, the radio communication terminal 181) via the radio section 251. [ Thereby, the connection destination of the wireless communication terminal (for example, the wireless communication terminal 181) can be switched from the first base station BS1 to another base station.

The first communication interface unit 254 is connected to the management apparatus 100. The first communication interface unit 254 according to the present embodiment is a wired network interface, but may be a wireless network interface. As the wired network interface, for example, Ethernet (registered trademark) conforming to IEEE802.3 may be used.

The management apparatus 100 is installed to integrally manage base station groups BS1 to BS4 installed indoors. As for the management apparatus 100, for example, it is assumed that one or two units are installed indoors, but the embodiments do not limit the number of units to be installed.

The management apparatus 100 includes a reset group list storage section 201, a base station state management section 202, a reset control section 203 and a second communication interface section 204, To monitor the base army.

The reset group list storage unit 201 associates the list of the reset base stations and the list of the complementary base stations, and stores them as a reset group. In the reset base station list, identification information for identifying a base station to be reset is described. As a base station adjacent to the base station to be reset, identification information for identifying the base station that compensates the communication area of the base station to be reset is written by increasing the transmission power.

That is, the management apparatus 100 has storage means for storing first identification information indicating the first radio relay apparatus and second identification information indicating the second radio relay apparatus in association with each other.

The base station to be reset is adjacent to the base station that compensates for the communication area when reset. In this embodiment, the correspondence of the reset groups is made based on the distance between these base stations and the distance over which radio communication is possible when the transmission power of the antenna of the base station is increased. That is, in the reset group list storage unit 201 according to the present embodiment, the communication area (communicable range) is supplemented by increasing the transmission power among the base station to be reset and the base station adjacent to the base station in which the reset is performed The correspondence relationship of the base stations that can be used is maintained.

In the reset group list storage unit 201 according to the present embodiment, frequency bands are assigned to a plurality of base stations associated with each other as a reset group such that frequency bands to be used mutually do not overlap. Thereby, it is possible to suppress interference of communications of other base stations with each base station in the reset group regardless of whether or not the transmission power is increased and the communication area of each base station is increased.

Fig. 3 shows an example of a table provided in the reset group list storage unit 201. Fig. As shown in FIG. 3, a list of a reset base station indicating a base station to be reset at substantially the same time and a list of supplementary base stations indicating a base station supplementing the communication area when the base station is reset are stored in association with each other.

In the example shown in Fig. 3, the group A corresponds to the first base station BS1 to be reset and the base station BS2 that compensates the communication area of the first base station BS1. The correspondence relationship of the group A is such that when the first base station BS1 is reset, the transmission power of the second base station BS2 adjacent to the first base station BS1 is increased, and the communication of the second base station BS2 relayed by the first base station BS1 Which means complementing the possible areas.

Also, the correspondence relationship of the group B is such that, when the second base station BS2 is reset, the transmission power of the first base station BS1 adjacent to the second base station BS2 is increased so that the first base station BS1 relays the second base station BS2 It means supplementing the communication available area.

Fig. 4 shows communication areas in which the first base station BS1 and the second base station BS2 can communicate with each other during normal operation. In the example shown in Fig. 4, the first base station BS1 enables communication in the communication area 401, and the second base station BS2 enables communication in the communication area 402. [ Thereby, the indoor area 451 can be covered by the first base station BS1 and the second base station BS2.

In this embodiment, in the reset group list storage unit 201, the first base station BS1 and the second base station BS2 are associated with each other. To this end, when resetting the first base station BS1, the management apparatus 100 transmits an instruction to increase the transmission power to the second base station BS2 so as to cover the area 451 in the indoor area.

5 shows a communication area covered by the second base station BS2 at the time of updating the file of the first base station BS1. In the example shown in Fig. 5, communication can be performed in the communication area 501 by increasing the transmission power of the second base station BS2. As a result, the wireless communication terminal can transmit and receive data within the indoor area 451. As described above, in the communication system according to the present embodiment, when the first base station BS1 is reset, the second base station BS2 compensates the communication area by increasing the transmission power of the second base station BS2.

Generally, the more base stations are installed, the more wireless communication terminals can be accommodated. On the other hand, in the example shown in Fig. 5, although the second base station BS2 can cover the area 451, fewer base stations are operating in the area 451 in the house. Along with this, the capacity of the traffic that can be transmitted and received in the indoor area 451 decreases. For this reason, it is preferable that the file update as shown in FIG. 5 is performed in a time zone in which the number of wireless communication terminals that make a connection request, such as a night time zone, a Saturday zone, or a Sunday, decreases. In other words, in the communication system according to the present embodiment, it is possible to provide the wireless communication terminal with a service in which traffic capacity is reduced at the time of updating the file of the base station, but communication is not interrupted in the area 451 in the indoor have.

Further, the management apparatus 100 manages the frequency bands of the base stations to be managed. Further, the management apparatus 100 may automatically build a reset group based on the arrangement of the base stations. Then, the management apparatus 100 may automatically allocate different frequency bands to the base stations belonging to the reset group. As a result, the burden on the administrator when installing the base station can be reduced.

The management apparatus 100 according to the present embodiment refers to the reset group list storage unit 201 and controls the reset of each base station so as to reduce the occurrence of an area that can not communicate at the time of reset of each base station can do. Since the management device 100 can perform batch control such as resetting, it is possible to reduce the burden on the administrator.

1 and 2, the second communication interface unit 204 of the management apparatus 100 is connected to the base stations BS1 to BS4, the maintenance network 171, the communication network 172, and the like. The second communication interface unit 204 according to the present embodiment is a wired network interface, but a network interface such as wireless may be used.

The base station state management unit 202 stores the state of each base station to be controlled by the management apparatus 100. [ For example, the base station state management unit 202 stores states such as normal operation, reset, start, and transmission power increase for each base station.

The reset control section 203 includes a transmission control section 211 and performs reset control of each base station. The reset control section 203 also performs the control of complement by the other base station when performing reset control of one base station. For the control of reset control or supplement, the transmission control section 211 transmits various control commands to the base station.

The transmission control section 211 refers to the reset group list storage section 201 and transmits a control command for increasing the transmission power to the base station identified by the list of complementary base stations. The base station to which the control command is transmitted can increase the transmission power by the transmission power setting unit 252 so that the communication area of the adjacent base station can be supplemented.

That is, the management apparatus 100 has first transmission means for transmitting a first control command for increasing the transmission power to the first radio relay apparatus. Further, the radio relay apparatus has setting means for setting the transmission power of the radio section to be large when receiving the first control command.

The transmission control section 211 refers to the reset group list storage section 201 and transmits to the base station identified by the reset base station list a control command for executing a handover to the radio communication terminal connected to the base station , And transmits a reset command to the base station. In the present embodiment, after transmitting the control command for executing the handover, after confirming that the radio communication terminal has performed the handover, the mobile communication terminal transmits a reset command.

That is, the management apparatus 100 transmits a second control command for executing a handover to the wireless terminal connected to the second wireless relay apparatus, and transmits to the second wireless relay apparatus a second transmission .

It is also assumed that the base station that transmits the control command for increasing the transmission power of the transmission control unit 211 and the base station that transmits the reset command are associated with each other as the same group in the reset group list storage unit 201. [

In addition, when the base station that has transmitted the reset command returns from the reset state, the transmission control unit 211 transmits a control command for returning the transmission power to the normal transmission power to the base station that has transmitted the control command for increasing the transmission power.

That is, the management apparatus 100 has third transmitting means for transmitting to the first radio relay apparatus a third control command for returning it to the transmission power before largely.

6 is a diagram showing a flow in which the base stations BS1 and BS2 complement each other's communication area during file updating. In Fig. 6, 1), the base stations BS1 and BS2 cover respective communication areas during normal operation. 6) corresponds to the state shown in Fig.

6) of FIG. 6 shows the file update time of the first base station BS1. Since the file update is performed after the resetting of the first base station BS1 is performed, the transmission power of the second base station BS2 is increased to supplement the communication area covered by the first base station BS1. 6) corresponds to the state shown in Fig.

After the file updating of the first base station BS1 is completed, the reset control of the second base station BS2 is performed.

6) of FIG. 6 shows the file update time of the second base station BS2. Since the file update is performed after the resetting of the second base station BS2 is performed, the transmission power of the first base station BS1 is increased to compensate the communication area covered by the second base station BS2.

After the file updating of the second base station BS2 is completed, control for returning to normal operation is performed.

6) shows a state after the file updating of the base stations BS1 and BS2 is finished and returns to the normal operation state. 6) in FIG. 6), the base stations BS1 and BS2 cover respective communication areas as in the case 1) of FIG.

According to the present embodiment, it is possible to provide a radio management apparatus, a communication system, and a communication method that can reduce the influence of end users on communication upon resetting.

In the example described above, an example has been described in which one base station to be supplemented is associated with one base station to be reset. However, the correspondence relationship is not limited to one-to-one, but may be many to many. Therefore, there will be described an example in which, when resetting a plurality of base stations, the transmission power of a plurality of base stations is increased to compensate.

Fig. 7 shows an example of a table provided in the reset group list storage unit 201. Fig. The reset group list storage unit 201 stores a list of a reset base station indicating a plurality of base stations that are reset at substantially the same time for each group and a list of supplementary base stations indicating a plurality of base stations that supplement a communication area when the base station is reset I remember.

In the example shown in Fig. 7, the group A corresponds to the first base station BS1 and the fourth base station BS4 to be reset, and the second base station BS2 and the third base station BS3 perform the complement. The correspondence relationship of the group A increases the transmission power of the second base station BS2 and the third base station BS3 when the first base station BS1 and the fourth base station BS4 are reset almost simultaneously and the second base station BS2 and the third base station BS3 This means that the first base station BS1 and the fourth base station BS4 supplement the communicable area.

The correspondence relationship of the group B increases the transmission power of the first base station BS1 and the fourth base station BS4 when the second base station BS2 and the third base station BS3 are reset almost simultaneously and the first base station BS1 and the fourth base station BS4 The second base station BS2 and the third base station BS3 complement the communicable area.

Fig. 8 shows a communication area in which each of the base stations BS1 to BS4 can communicate with each other during normal operation. 8, the first base station BS1 can communicate within the communication area 801, the second base station BS2 can communicate within the communication area 802, the third base station BS3 can communicate with the communication area 803, And the fourth base station BS4 is capable of communicating within the communication area 804. [ Thereby, the indoor area 851 can be covered by the four base stations.

According to the example shown in Fig. 7, the management apparatus 100 is connected to the second base station BS2 and the third base station BS3 so as to cover the area 851 in the house before resetting the first base station BS1 and the fourth base station BS4 , And transmits an instruction to increase the transmission power.

9 is a diagram showing the communication areas covered by the second base station BS2 and the third base station BS3 at the time of updating the files of the first base station BS1 and the fourth base station BS4. In the example shown in Fig. 9, the communication area 902 and the communication area 903 can be communicated by increasing the transmission power of the second base station BS2 and the third base station BS3. Thus, the wireless communication terminal can transmit and receive data in the area 851 in the indoor area.

9, since the distance between the third base station BS3 and the first base station BS1 or the fourth base station BS4 is longer than the radius of the communication area 903 of the third base station BS3, the third base station BS3 side The third base station BS3 can cover the communication areas of the first base station BS1 and the fourth base station BS4.

Further, the first base station BS1 and the fourth base station BS4 are interposed, and the second base station BS2 is provided on the opposite side of the third base station BS3. Since the radius of the communication area 902 of the second base station BS2 is longer than the distance between the second base station BS2 and the first base station BS1 or the fourth base station BS4, The communication area of the first base station BS1 and the fourth base station BS4 can be covered by the second base station BS2.

As described above, the communication areas of the first base station BS1 and the fourth base station BS4 are covered by the second base station BS2 and the third base station BS3 from both sides, thereby suppressing the occurrence of an area where the radio communication terminal can not communicate.

When the communication area of the second base station BS2 overlaps with the communication area of the third base station BS3, when the transmission power is increased, the management device 100 sets the frequency band used by both base stations differently You can.

Next, a description will be given of an overall process for updating a file of each base station in the communication system according to the present embodiment. 10 is a flowchart showing a procedure of the above-described processing in the communication system according to the present embodiment.

First, the management apparatus 100 reads the information of the reset group A from the reset group list storage unit 201. Then, As a result, the second base station BS2 and the third base station BS3 are specified as the base stations complementary to the communication area, and the first base station BS1 and the fourth base station BS4 are identified as the reset targets.

Therefore, the transmission control section 211 of the management apparatus 100 transmits a control command for increasing the transmission power to the second base station BS2 and the third base station BS3 (steps S1001 and S1003). The transmission power setting unit 252 of the second base station BS2 and the third base station BS3, which have received the control command, controls the radio unit 251 to increase the transmission power (steps S1002 and S1004). This makes it possible for the second base station BS2 and the third base station BS3 to supplement the communication areas of the first base station BS1 and the fourth base station BS4.

That is, the management apparatus 100 has first transmission means for transmitting a first control command for increasing the transmission power to the first radio relay apparatus.

Thereafter, the state of each base station of the base station state management unit 202 is updated based on the transmitted command and the received notification.

Thereafter, the transmission control section 211 of the management apparatus 100 transmits a reset preparation request to the first base station BS1 (step S1005). This reset preparation request also includes a control command for executing the handover of the connected wireless communication terminal. Thereby, the call control section 253 of the first base station BS1 performs handover control so as to connect with the other base station (for example, the second base station BS2 or the third base station BS3) to the wireless communication terminal to which it is connected S1006). After the reset preparation including the handover control is completed, the call control section 253 of the first base station BS1 transmits a reset preparation response to the management apparatus 100 via the first communication interface section 254 (Step S1007).

Also, between the management apparatus 100 and the fourth base station BS4, processing for reset preparation similar to steps S1005 to S1007 is performed (steps S1008 to S1010).

Thereafter, the transmission control section 211 of the management apparatus transmits a reset command to the first base station BS1 (step S1011). Thereby, the call control section 253 of the first base station BS1 performs the reset control of the self-device (step S1012).

That is, the management apparatus 100 transmits to the second radio relay apparatus the second control command for executing the handover of the radio terminal connected to the second radio relay apparatus, and transmits the second control command for performing the second transmission . The call control unit 253 of the base station is handover control means for executing handover of the radio communication terminal being connected. And the call control unit 253 transmits a handover command to the radio communication terminal via the radio unit 251. [ The call control unit 253 is reset control means for resetting the self apparatus.

Then, the first base station BS1 performs file update after reset. After updating the file, the call control section 253 of the first base station BS1 notifies the management apparatus 100 of the fact that the startup has been completed via the first communication interface section 254 (step S1013).

Likewise, between the management apparatus 100 and the fourth base station BS4, processing relating to reset and file update is performed (steps S1014 to S1016) as in steps S1011 to S1013.

As described above, the first base station BS1 and the fourth base station BS4 perform the reset control in accordance with the reset command. At this time, after the handover of the radio communication terminal is performed, the communication area is also supplemented. For this reason, both the communication call and the newly generated call by the wireless communication terminal can be communicated without being influenced by the file update.

After receiving notification of the completion of activation from all the base stations for which the reset control has been performed, the transmission control section 211 of the management apparatus 100 returns to the normal operation to the second base station BS2 extending the communication area (Returning the transmission power to the normal value) (step S1017). As a result, the transmission power setting unit 252 of the second base station BS2 controls the radio unit 251 to return the transmission power to the normal value (step S1018).

Further, the transmission control section 211 of the management apparatus 100 transmits a control command for returning (returning the transmission power to the normal value) to the normal operation to the third base station BS3 extending the communication area S1019). Thus, the transmission power setting unit 252 of the third base station BS3 performs control to return the transmission power to the normal value to the radio unit 251 (step S1020). Thereby, the base station state management section 202 is updated in a state in which all base stations are normally operating.

The base station status management unit 202 of the management apparatus 100 manages the load status of the base station connected to the management apparatus 100 for each base station and performs handover to the base station with the lowest traffic . In this case, optimum traffic distribution is possible.

Also in this example, the present embodiment can provide a radio management apparatus, a communication system, and a communication method that can reduce the influence of end users on communication upon resetting.

(Modified example)

In the first embodiment, the management apparatus 100 transmits a control command for executing the handover of the connected radio communication terminal to the base station to be reset, and the base station transmits a handover command to the radio communication terminal Respectively. However, the present invention is not limited to the case where the base station transmits a control command for executing the handover to the radio communication terminal. Therefore, in the modified example, an example in which the base station does not transmit a handover command to the control wireless communication terminal, but reduces the transmission power of the base station, thereby prompting a voluntary handover of the wireless communication terminal.

The configuration of the modified example is the same as that of the embodiment, and a description thereof is omitted. Also in the modified example, the base station to be reset and the base station adjacent thereto complement the communication area of the base station to be reset by increasing the transmission power. Then, the management apparatus 100 transmits a control command to the base station to be reset, which gradually reduces the transmission power as a reset preparation. Thereby, the transmission power setting unit 252 of the base station to be reset performs control to gradually reduce the transmission power before resetting.

As a result, since the communication quality of the wireless terminal connected to the base station to be reset deteriorates, the handover is performed spontaneously. Then, after the wireless terminal that is connected completes the handover, the base station performs the reset. This makes it possible to update the file of the base station without affecting the call being connected.

According to the present modification, as in the embodiment, it is possible to provide a radio management apparatus, communication system, and communication method capable of reducing the influence of end users on communication upon resetting.

Conventionally, in a base station with an indoor content, at the time of updating a file, a temporary stop state accompanied by a reset is set. As a result, the communication area occupied by the base station becomes a dead zone, which affects the communication of the end user.

On the other hand, in the communication system according to the above-described embodiment and the modification, adjacent base stations complement the communication area even if the base station of the indoor contents is temporarily stopped for file update. Thereby, in the communication system according to the embodiment and the modification, the communication area occupied by the base station which is temporarily stopped at the time of reset can not become the dead zone, and the influence on the communication of the end user can be reduced .

Further, in the communication system according to the embodiment and the modified example, the communication area of the reset base station can be supplemented by the base station whose communication area is enlarged by increasing the transmission power. Therefore, the communication system according to the embodiment and the modified example can reduce the number of base stations to be installed compared with the case where the base stations are arranged at a high density so as not to cause a dead zone at reset.

11 is a diagram showing a hardware configuration of the management apparatus 100 according to the above-described embodiment and modified examples. 11, the management apparatus 100 includes a central processing unit (CPU) 1101, a read only memory (ROM) 1102, a random access memory (RAM) 1103, / F 1104, and a hard disk drive (HDD) 1105, and has a hardware configuration using an ordinary computer.

The control program executed by the management apparatus 100 in the above-described embodiment and modified examples may be a CD-ROM, a flexible disk (FD), a CD-R, a DVD (Digital Versatile Disk), or the like as a file of an installable format or executable format On a computer-readable recording medium.

The control program executed by the management apparatus 100 in each of the above-described embodiments and modifications may be stored on a computer connected to a network such as the Internet and downloaded through a network. Further, the control program executed by the management apparatus 100 of the embodiment and the modification may be provided or distributed via a network such as the Internet.

Further, the control program of the present embodiment may be built in advance in a ROM or the like.

The control program executed in the management apparatus 100 according to the embodiment and the modification described above has a module configuration including the above-described respective units. As the actual hardware, the CPU 1101 reads the control program from the HDD 1105 The above-mentioned respective units are loaded on the RAM 1103 and realized as respective additional software configurations.

While several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and alterations can be made without departing from the gist of the invention. These embodiments and their modifications fall within the scope and spirit of the invention and are included in the scope of the invention as defined in the claims and their equivalents.

Claims (10)

A wireless management device for managing a plurality of wireless base stations capable of wireless communication with a terminal,
A storage unit that stores first identification information indicating a first wireless base station and second identification information indicating a second wireless base station capable of wireless communication with the terminal in an area capable of wireless communication with the first wireless base station,
And transmits a second control command for increasing the transmission power to the second wireless base station so as to enable wireless communication in an area capable of wireless communication with the first wireless base station, Transmits a first control command instructing the first radio base station to hand over to the second radio base station identified by the second identification information to the terminal wirelessly communicating with the first radio base station A transmitter for transmitting a reset command for stopping the power supply to the first radio base station
And a radio network controller. The method according to claim 1,
Wherein the transmission unit further transmits as a first control command a control command for handing over to a radio base station having a low traffic among a plurality of radio base stations when a plurality of radio base stations to be handed over are present. The method according to claim 1,
The transmission unit further transmits a third control command for causing the second radio base station to return to the transmission power before the increase when the first radio base station that has transmitted the reset command returns from the reset state , A wireless management device. A communication system comprising a plurality of wireless base stations forming a wireless communicable area and a wireless management apparatus managing the plurality of wireless basestations,
The radio network controller includes:
A storage unit that stores first identification information indicating a first wireless base station and second identification information indicating a second wireless base station that can wirelessly communicate with a terminal in an area capable of wireless communication with the first wireless base station,
And transmits a second control command for increasing the transmission power to the second wireless base station so as to enable wireless communication in an area capable of wireless communication with the first wireless base station, And transmits a first control command to the first radio base station so as to perform handover to a second radio base station identified by the second identification information with respect to a terminal performing radio communication with the first radio base station, And a transmitter for transmitting a reset command for stopping the power supply of the first radio base station,
Wherein the first wireless base station comprises:
And a control unit for performing handover to the terminal when the first control command is received. A communication method executed in a radio network controller that manages a plurality of radio base stations capable of performing radio communication with a terminal,
The radio management apparatus stores therein first identification information indicating a first radio base station and second identification information indicating a second radio base station capable of wirelessly communicating with the terminal in an area capable of wireless communication with the first radio base station And,
The radio network controller transmits a second control command to the second radio base station to increase the transmission power so as to enable radio communication in an area capable of wireless communication with the first radio base station, To the first wireless base station, the first wireless base station to hand over the terminal wirelessly communicating with the first wireless base station to the second wireless base station identified by the second identification information, A transmission step of transmitting, to the base station, a reset command for stopping the power supply to the first radio base station
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