Position registration area configuration method, mobile communication system, wireless base station, and position information management server

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a location registration area configuration method, a mobile communication system, a radio base station and a location information management server, and more specifically, a plurality of radio base stations, a plurality of mobile stations, and a network to which the radio base stations are connected. , A method for configuring a location registration area in a mobile communication system including a location information management server connected to a network (particularly, a method for configuring a location registration area when a wireless base station is newly installed or removed), the mobile communication. The present invention relates to a system, a wireless base station and a location information management server constituting the mobile communication system.

【0002】

[Conventional technology]

Conventionally, a second-generation cordless telephone system called PHS (Personal Handyphone System) has been known (ARIB RCR STD-28 second-generation cordless telephone system standard). In this system, the location registration area in which each mobile station registers the location employs a location registration area system composed of radio zones formed by a plurality of radio base stations. Each mobile station is notified of the location registration area information of the group to which the own station belongs by the notification information from the radio base station, and compares the notified location registration area information with the location registration area information registered by the own mobile station. Then, if the notification information is different from the registered information, the location is registered. As a feature of this, since the radio zones forming the individual location registration areas have a microcell configuration with a small radius, the overlap between the individual radio zones is large, and each mobile station registers the location. The size of the location registration area is always fixed regardless of the amount of traffic fluctuation of each mobile station.

【0003】

[Problems to be Solved by the Invention]

In the above-mentioned prior art, since a plurality of radio base stations constituting the location registration area are connected to the exchange by a clear physical link, when a radio base station is newly installed or removed in the location registration area, , Even between adjacent wireless base stations, the connected exchanges may be different and the calling area for simultaneous calling may be different. For this reason, there is a risk that location registration must be performed frequently each time the radio zone formed by the radio base station is moved. Therefore, the location registration area can be flexibly set for new installation and removal of the radio base station. It is essential to control the radio base station and the location information management server for reconstruction.

【0004】

In addition, the size of the location registration area is fixed regardless of whether there are many or less of the incoming traffic characteristics and / or communication traffic characteristics in each location registration area. Therefore, depending on the frequency of incoming traffic. There is a problem that the calling channel is compressed and the channel efficiency is deteriorated. Therefore, the size of the location registration area is optimized by dynamically changing the number of radio base stations in the location registration area according to both or one of the incoming traffic characteristics and the communication traffic characteristics in the location registration area. Is an indispensable technology for improving channel efficiency.

【0005】

The present invention has been made to solve the above problems, and when a radio base station is newly installed or removed in the location registration area, the location registration area is automatically reconfigured to optimize the location registration area. The first purpose is to achieve the conversion. In addition, by dynamically changing the number of radio base stations in the location registration area based on both or one of the incoming traffic characteristics and the communication traffic characteristics, the location registration area is optimized, the incoming traffic is smoothed, and the incoming traffic is smoothed. The second purpose is to improve the channel efficiency.

【0006】

[Means for solving problems]

In order to achieve the first object, the location registration area configuration method according to the present invention includes a plurality of mobile stations, a plurality of radio base stations connected to a network, and the network, as described in claim 1. The radio base station is configured to include a location registration area formed by a set of radio zones formed by the radio base station and a location information management server that manages the location information of the mobile station. A location registration area configuration method in a mobile communication system that enables communication with surrounding wireless base stations via a wired line, when the wireless base station is newly installed in the mobile communication system. The recognition process of recognizing the position of the own station and recognizing the state of the location registration area formed by the surrounding wireless base stations by communicating with the surrounding wireless base stations or the location information management server. The selection process in which the newly established radio base station selects the location registration area to which the own station should belong based on the recognized position of the own station and the state of the location registration area, and the newly established radio base station. Notifies the location information management server that the station belongs to the selected location registration area and a new station is newly established in the location registration area, and also provides a location registration area identifier for identifying the location registration area. It is characterized by having a notification step of notifying the mobile station by a notification channel.

【0007】

That is, in this location registration area configuration method, when a wireless base station is newly installed in a mobile communication system in the recognition process, the position of the own station is recognized and communication or location information with surrounding wireless base stations is performed. The state of the location registration area formed by the surrounding wireless base stations is recognized by communication with the management server, and the newly established wireless base station in the selection process determines the position of the recognized own station and the location registration area. Select the location registration area to which your station should belong based on the status. Then, in the notification process, the newly established radio base station belongs to the selected location registration area, notifies the location information management server that the own station is newly established in the location registration area, and at the same time, the location. The location registration area identifier for identifying the registration area is notified to the mobile station by the notification channel. As a result, the location registration area can be flexibly reconfigured when a new wireless base station is installed, and at the same time, the state of the location registration area recognized through communication with surrounding wireless base stations or communication with a location information management server is also taken into consideration. This makes it possible to avoid the problem that the location registration area is different between adjacent wireless base stations, which has been a problem in the past.

【0008】

Further, in order to achieve the first object, the location registration area configuration method according to the present invention includes a plurality of mobile stations, a plurality of radio base stations connected to a network, and a plurality of radio base stations, as described in claim 2. The radio base station is configured to include a location registration area connected to the network and formed by a set of radio zones formed by the radio base station, and a location information management server that manages the location information of the mobile station. A location registration area configuration method in a mobile communication system that enables communication with surrounding wireless base stations via a wireless or wired line, wherein the wireless base station is newly installed in the mobile communication system. In this case, the recognition step of recognizing the position of the own station, the position notification step of the newly established radio base station notifying the position information of the own station to the location information management server, and the location information management server are described above. A selection step of selecting a location registration area to which the newly established radio base station should belong based on the state of the location registration area and the notified location information, and a location registration area selected by the location information management server. The area notification process for notifying the newly established radio base station and the location registration area identifier for which the newly established radio base station belongs to the notified location registration area and identifies the location registration area are described above. It is characterized by having a notification step of notifying a mobile station by a notification channel.

【0009】

That is, in this location registration area configuration method, when the radio base station is newly installed in the mobile communication system in the recognition process, when the position of the own station is recognized, the newly installed radio base station is installed in the position notification process. Notifies the location information of its own station to the location information management server. Then, in the selection process, the location information management server selects the location registration area to which the newly established wireless base station should belong based on the status of the location registration area and the notified location information, and in the area notification process. Notify the newly established radio base station of the selected location registration area. Upon receiving this notification, the newly established radio base station belongs to the notified location registration area in the notification process, and notifies the mobile station of the location registration area identifier for identifying the location registration area by the notification channel. To do. As a result, similarly to the above, the location registration area can be flexibly reconfigured when a wireless base station is newly installed, and at the same time, the location registration area can be selected in consideration of the state of the location registration area managed by the location information management server. It is possible to avoid the problem that the location registration area is different between adjacent wireless base stations, which has been a problem.

【0010】

In the location information management server, as described in claim 3, the location information management server registers the radio base stations constituting the location registration area in order to smoothly manage the information of the newly established radio base station. It is desirable to have a registration process for registering the information of the newly established radio base station in the table.

【0011】

On the other hand, when the wireless base station is removed from the mobile communication system, as described in claim 4, the wireless base station notifies the location information management server that its own station will be removed. And the deletion process in which the location information management server deletes the information of the wireless base station to be removed from the registration table of the wireless base station constituting the location registration area to which the wireless base station to be removed belonged. It is desirable to have more. In this way, the location information management server can smoothly manage the registration status of the radio base stations constituting the location registration area by using the registration table of the radio base station by the notification from the radio base station.

【0012】

By the way, in order to achieve the second object, as described in claim 5, the location registration area configuration method according to the present invention is such that the radio base station is in a radio zone formed by the radio base station. The measurement step of measuring the traffic characteristics, the traffic notification step of the radio base station notifying the location information management server of the traffic characteristics obtained by the measurement, and the location information management server based on the notified traffic characteristics. Further, it is characterized by further having an increase / decrease step of increasing / decreasing the number of radio base stations constituting each location registration area so that the traffic in each location registration area is averaged.

【0013】

That is, when the radio base station measures the traffic characteristics in the radio zone formed by the radio base station in the measurement process, the radio base station notifies the location information management server of the traffic characteristics obtained by the above measurement in the traffic notification process. .. The location information management server that receives this notification is a radio base station that constitutes each location registration area so that the traffic in each location registration area is averaged based on the notified traffic characteristics in the increase / decrease process. Increase or decrease the number of. In this way, since the number of radio base stations in the location registration area is dynamically changed based on the traffic characteristics, it has the effect of smoothing the traffic, and at the same time, the size of the location registration area is optimized and the channel efficiency is improved. Has the effect of improving.

【0014】

Further, in order to achieve the second object, as described in claim 6, the location registration area configuration method according to the present invention is such that the radio base station is located in a radio zone formed by the radio base station. A measurement step for measuring traffic characteristics, an information exchange step in which the radio base station exchanges information on the traffic characteristics by inter-base station communication with surrounding radio base stations, and the radio base station obtains by exchange. Further having an increase / decrease step of increasing / decreasing the number of radio base stations constituting the location registration area to which the own station belongs so that the traffic in each location registration area is averaged based on the traffic characteristics obtained. It is characterized by.

【0015】

That is, the radio base station measures the traffic characteristics in the radio zone formed by the radio base station in the measurement process, and the information on the traffic characteristics is measured by communication between the base stations with the surrounding radio base stations in the information exchange process. To replace. Then, the radio base station constitutes a location registration area to which its own station belongs so that the traffic in each location registration area is averaged based on the traffic characteristics obtained by the above exchange in the increase / decrease process. Increase or decrease the number of wireless base stations. In this way, since the number of radio base stations in the location registration area is dynamically changed based on the traffic characteristics, it has the effect of smoothing the traffic, and at the same time, the size of the location registration area is optimized and the channel efficiency is improved. Has the effect of improving.

【0016】

In the above measurement step, as described in claim 7, it is desirable to measure both or one of the incoming traffic characteristic and the communication traffic characteristic as the traffic characteristic in the radio zone.

【0017】

Further, as described in claim 8, the location registration area is defined as a space divided by latitude and longitude, a three-dimensional structure and a floor of the three-dimensional structure, an individual vehicle, an individual ship, or an individual aircraft. can do.

【0018】

Further, in the above recognition step, as described in claim 9, the radio base station communicates with the Global Positioning System (GPS), peripheral radio base stations, and with the position information management server. The position of the own station can be recognized by communication or by using a position information recognition means other than the above.

【0019】

By the way, the invention relating to the above-mentioned location registration area configuration method can also be described as an invention relating to a mobile communication system, an invention relating to a wireless base station, and an invention relating to a location information management server as described below. These are based on substantially the same technical idea, and have similar actions and effects.

【0020】

That is, in order to achieve the first object, as described in claim 10, the mobile communication system according to the present invention includes a plurality of mobile stations, a plurality of radio base stations connected to a network, and the network. A location registration area formed by a set of radio zones formed by the radio base station and a location information management server that manages the location information of the mobile station are formed by the radio base station. A mobile communication system in which a set of wireless zones forms a location registration area and the wireless base station can communicate with surrounding wireless base stations via a wireless or wired line. When a station is newly installed in the mobile communication system, the location of the own station and the location registration formed by the surrounding wireless base station by communication with the surrounding wireless base station or communication with the location information management server. A recognition means for recognizing the state of the area, a selection means for selecting a position registration area to which the own station should belong based on the recognized position of the own station and the state of the position registration area, and the position of the own station. It is provided with a notification means for notifying the location information management server that a new location has been established in the registration area and notifying the mobile station of a location registration area identifier for identifying the location registration area via a notification channel. It is characterized by.

【0021】

Further, in order to achieve the first object, as described in claim 11, the mobile communication system according to the present invention includes a plurality of mobile stations, a plurality of radio base stations connected to a network, and the network. A location registration area formed by a set of radio zones formed by the radio base station and a location information management server that manages the location information of the mobile station are formed by the radio base station. A mobile communication system in which a set of wireless zones forms a location registration area and the wireless base station can communicate with surrounding wireless base stations via a wireless or wired line. When a station is newly installed in the mobile communication system, a recognition means for recognizing the position of the own station and a position notification means for notifying the position information management server of the position information of the own station recognized by the recognition means. The location information management server is provided with a notification means for notifying the mobile station of a location registration area identifier notified from the location information management server by a notification channel, and the location information management server registers the location. Based on the state of the area and the notified location information, the selection means for selecting the location registration area to which the newly established radio base station should belong and the location registration area selected by the selection means are newly established. It is characterized by being provided with an area notification means for notifying a radio base station.

【0022】

Here, as described in claim 12, the location information management server further includes a registration means for registering the information of the newly established radio base station in the registration table of the radio base station constituting the location registration area. It is desirable to have a similar configuration.

【0023】

Further, as described in claim 13, when the radio base station is removed from the mobile communication system, the radio base station is a removal notification means for notifying the location information management server that the station is removed. , The deletion means by which the location information management server deletes the information of the radio base station to be removed from the registration table of the radio base station constituting the location registration area to which the radio base station to be removed belonged. It is desirable to have a configuration further provided with.

【0024】

By the way, in order to achieve the second object, as described in claim 14, the mobile communication system according to the present invention has the traffic characteristics of the radio base station in the radio zone formed by the radio base station. The location information management server further includes a measuring means for measuring the above and a traffic notifying means for notifying the location information management server of the traffic characteristics obtained by the measurement by the measuring means. Based on this, it is characterized by further providing an increasing / decreasing means for increasing / decreasing the number of radio base stations constituting each location registration area so that the traffic in each location registration area is averaged.

【0025】

Further, in order to achieve the second object, as described in claim 15, the mobile communication system according to the present invention has the traffic characteristics of the radio base station in the radio zone formed by the radio base station. Based on the information exchange means for exchanging information on the traffic characteristics by the measuring means for measuring the above and the communication between the base stations with the surrounding wireless base stations, and the traffic characteristics obtained by the exchange by the information exchange means, respectively. It is characterized by further providing means for increasing / decreasing the number of radio base stations constituting the location registration area to which the own station belongs so that the traffic in the location registration area is averaged.

【0026】

Here, as described in claim 16, it is desirable that the measuring means is configured to measure both or one of the incoming traffic characteristic and the communication traffic characteristic as the traffic characteristic in the radio zone.

【0027】

Further, as described in claim 17, the location registration area is defined as a space divided by latitude and longitude, a three-dimensional structure and a floor of the three-dimensional structure, an individual vehicle, an individual ship, or an individual aircraft. It is desirable to be done.

【0028】

Further, as described in claim 18, the recognition means uses a global positioning system, communication with a peripheral radio base station, communication with the position information management server, or a position information recognition means other than the above. It is desirable to have a configuration that recognizes the position of the station.

【0029】

Next, in order to achieve the first object, as described in claim 19, the radio base station according to the present invention is connected to a plurality of mobile stations and a network, and is formed by a set of radio zones. A mobile communication system is configured together with a location registration area and a location information management server that manages the location information of the mobile station, and is connected to the network to communicate with surrounding wireless base stations via a wireless or wired line. This is possible, and the position of the own station when the set of radio zones formed by the own station and surrounding radio base stations is a radio base station forming a location registration area and is newly installed in the mobile communication system. , And the recognition means for recognizing the state of the location registration area formed by the surrounding wireless base stations by communication with the surrounding wireless base stations or communication with the location information management server, and the recognized own station. In addition to notifying the location information management server of the selection means for selecting the location registration area to which the own station should belong based on the location and the state of the location registration area and the fact that the own station is newly established in the location registration area. The mobile station is provided with a notification means for notifying the mobile station of the location registration area identifier for identifying the location registration area by means of a notification channel.

【0030】

Further, in order to achieve the first object, as described in claim 20, the radio base station according to the present invention is connected to a plurality of mobile stations and a network, and is formed by a set of radio zones. A mobile communication system is configured together with a location registration area and a location information management server that manages the location information of the mobile station, and is connected to the network to communicate with surrounding wireless base stations via a wireless or wired line. Is possible, and when a set of radio zones formed by the own station and surrounding radio base stations is a radio base station forming a location registration area and is newly installed in the mobile communication system, the position of the own station can be determined. A recognition means for recognizing, a position notification means for notifying the position information management server of the position information of the own station recognized by the recognition means, and a position for identifying the position registration area notified from the position information management server. The mobile station is provided with a notification means for transmitting the registration area identifier to the mobile station by a notification channel.

【0031】

Here, in order to achieve the second object, as described in claim 21, the radio base station according to the present invention is a measuring means for measuring the traffic characteristics in the radio zone formed by the radio base station. It is further provided with a traffic notification means for notifying the location information management server of the traffic characteristics obtained by the measurement by the measuring means.

【0032】

Further, in order to achieve the second object, as described in claim 22, the radio base station according to the present invention is a measuring means for measuring the traffic characteristics in the radio zone formed by the radio base station. , Information exchange means for exchanging information on the traffic characteristics by inter-base station communication with surrounding wireless base stations, and traffic in each location registration area based on the traffic characteristics obtained by the exchange by the information exchange means. Is further provided with an increasing / decreasing means for increasing / decreasing the number of radio base stations constituting the location registration area to which the own station belongs so that the numbers are averaged.

【0033】

As described in claim 23, the measuring means of the radio base station according to the present invention may be configured to measure both or one of the incoming traffic characteristic and the communication traffic characteristic as the traffic characteristic in the radio zone. desirable.

【0034】

Further, as described in claim 24, the wireless base station recognition means according to the present invention includes a global positioning system, communication with peripheral wireless base stations, communication with the location information management server, or other than the above. It is desirable that the position of the own station is recognized by using the position information recognition means.

【0035】

Next, in order to achieve the first object, the location information management server according to the present invention is connected to a plurality of mobile stations and a network as described in claim 25, and is connected to a wireless or wired line. It is possible to communicate with surrounding radio base stations via the radio base station, and a set of radio zones formed by the own station and surrounding radio base stations constitutes a mobile communication system together with a radio base station forming a location registration area. A location information management server that is connected to the network and manages the location information of the mobile station and the location registration area formed by the set of radio zones formed by the radio base station, and the state of the location registration area. And the selection means for selecting the location registration area to which the newly established radio base station should belong based on the location information notified from the radio base station newly established in the mobile communication system, and the position selected by the selection means. It is characterized by being provided with an area notification means for notifying the newly established radio base station of the registered area.

【0036】

Here, as described in claim 26, the location information management server according to the present invention is registered to register the information of the newly established radio base station in the registration table of the radio base station constituting the location registration area. It is desirable to have a configuration further provided with means.

【0037】

Further, as described in claim 27, the location information management server according to the present invention is notified that the radio base station is to be removed from the radio base station to be removed from the mobile communication system. It is desirable to have a configuration further provided with a deletion means for deleting the information of the wireless base station to be removed from the registration table of the wireless base station constituting the location registration area to which the wireless base station to be removed belonged. ..

【0038】

Further, in order to achieve the second object, as described in claim 28, the location information management server according to the present invention has a traffic in each location registration area based on the notified traffic characteristics. It is characterized by further providing an increasing / decreasing means for increasing / decreasing the number of radio base stations constituting each location registration area so as to be averaged.

【0039】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, various embodiments according to the present invention will be described.

【0040】

[First Embodiment] In the first embodiment, the radio base station recognizes the position of the own station at the time of new installation in the mobile communication system, and the own station belongs to the communication between the surrounding wireless base stations and the base stations. Explain the mode of selecting the location registration area to be to be used, and the mode in which the radio base station measures the traffic of the radio zone under its own station and dynamically changes the number of radio base stations in the location registration area based on the traffic characteristics. To do.

【0041】

FIG. 1 shows the mobile communication system 10 assumed in this embodiment. As shown in FIG. 1, the mobile communication system 10 is connected to the radio base station 13 connected to the network 12, the mobile station 14 existing in the radio zone 20 formed by the radio base station 13, and the network 12. It is configured to include a location registration area 30 formed by a set of radio zones 20 and a location information management server 11 that manages the location information of the mobile station 14. Although omitted in FIG. 1, it is assumed that there are a plurality of radio base stations 13 and mobile stations 14. Each wireless base station 13 is capable of communicating with surrounding wireless base stations 13 via a wireless or wired line.

【0042】

Here, the configurations of the location information management server 11 and the radio base station 13 will be outlined with reference to FIG.

【0043】

As shown in FIG. 2, the location information management server 11 has a location registration area management table 11C in which registration information of the radio base stations 13 constituting each location registration area 30 is recorded for each location registration area, and a location registration area. The registration unit 11D for registering the information of the newly established radio base station 13 in the management table 11C, the deletion unit 11E for deleting the information of the radio base station 13 to be removed from the location registration area management table 11C, and the network 12 It is configured to include a network communication unit 11B for transmitting and receiving information to and from each wireless base station 13 via the radio base station 13, and a control unit 11A for monitoring and controlling the operation of each of the above units.

【0044】

The radio base station 13 communicates with the location information management server 11 via the network 12, and also notifies the location information management server 11 that its own station is newly established in the location registration area 30 and the network communication unit 13B. When a station is newly installed in the mobile communication system 10, the position of the own station and the position formed by the surrounding radio base station 13 by communication with the surrounding radio base station 13 or communication with the position information management server 11. The recognition unit 13C that recognizes the state of the registration area 30, the selection unit 13D that selects the position registration area 30 to which the own station should belong based on the recognized position of the own station and the state of the position registration area 30, and the own. Based on the traffic characteristics obtained by the measurement unit 13E that measures the traffic characteristics in the radio zone 20 formed by the station and the exchange by the information exchange means, the traffic in each position registration area 30 is averaged so as to be averaged. While wireless communication is performed between the mobile station 14 and other wireless base stations 13 between the increase / decrease unit 13F that increases or decreases the number of wireless base stations 13 that make up the location registration area 30 to which the own station belongs, and the own station A wireless communication unit that notifies the mobile station 14 of the location registration area identifier for identifying the newly established location registration area 30 by a broadcast channel and exchanges information on traffic characteristics by communication between base stations with surrounding radio base stations 13. It is configured to include 13G and a control unit 13A that monitors and controls the operation of each of the above units.

【0045】

The measuring unit 13E measures both or one of the incoming traffic characteristic and the communication traffic characteristic as the traffic characteristic in the radio zone 20. The recognition unit 13C recognizes the position of its own station by GPS or communication with a plurality of peripheral radio base stations 13Q.

【0046】

In addition, the location registration area can be defined as a space divided by latitude and longitude, a three-dimensional structure and the floor of the three-dimensional structure, an individual vehicle, an individual ship, or an individual aircraft.

【0047】

Next, a method of selecting a location registration area by the radio base station when a radio base station is newly installed will be described with reference to FIG. In the following, regarding the designation of the location registration area, "location registration area 30" is used as a general term for a plurality of location registration areas, and a specific location registration area is referred to as "location registration areas 30A, 30B" and the like.

【0048】

In Fig. 3, it is assumed that the radio base station 13P is newly installed in the location registration area 30A. The newly established radio base station 13P recognizes the position of its own station by GPS or communication with a plurality of surrounding radio base stations 13Q by the recognition unit 13C (Fig. 2). Then, the radio base station 13P communicates with the peripheral radio base station 13Q between the base stations to grasp the status of the surrounding location registration area, and the own station performs based on the peripheral location registration area status and the location of the own station. Recognize the location registration area 30A to which you should belong.

【0049】

Here, if the newly established radio base station 13P is located near the boundary between the location registration areas 30A, 30B, and 30C, and there are a plurality of location registration areas 30 to which the peripheral radio base station 13Q belongs, location registration is performed. You may select the location registration area 30 to which you should belong so that the incoming traffic for each area 30 is smoothed, or you belong at that time so that the number of radio base stations for each location registration area 30 is smoothed. The location registration area 30 having the smallest number of radio base stations may be selected, or the location registration area 30 may be selected by a selection means other than these.

【0050】

Then, the newly established radio base station 13P belongs to the location registration area 30A, and at the same time, the location registration to which the radio base station 13P belongs to the mobile station 14 (FIG. 2) located in the radio zone formed by the radio base station 13P. Notify the location registration area identifier of area 30A and start providing services to the mobile station 14.

【0051】

As a means for the wireless base station 13P to recognize the position of its own station, in addition to using GPS or communication with a nearby wireless base station, communication with a position information management server 11 or a position information recognition means other than the above is used. May be used.

【0052】

Next, the process executed in the radio base station 13P will be described with reference to FIG. First, the radio base station 13P determines whether or not its own station is a radio base station to be removed (S41), and whether or not its own station is a radio base station to be newly established (S43). To do. Here, if the own station is a radio base station to be removed (affirmed in S41), the radio base station 13P notifies the location information management server 11 that it will be removed (S42). On the other hand, if the radio base station 13P is a radio base station to be newly established (affirmed in S43), the recognition unit 13C (Fig. 2) communicates with GPS or a plurality of surrounding radio base stations 13Q. Recognize the location of the station (S44). Then, by performing inter-base station communication with the surrounding wireless base station 13Q or communication with the location information management server 11, the state of the location registration area 30 formed by the surrounding wireless base station 13Q is recognized (S45). Based on the location information obtained by these recognitions and the state of the location registration area 30, the location registration area to which the own station should belong is recognized (selected) (S46). Further, the radio base station 13P notifies the location information management server 11 of the selected location registration area (S47), and positions the mobile station 14 (Fig. 2) under the newly established radio base station 13P. By notifying the registration area identifier through the notification channel, it notifies that the wireless base station 13P has been newly established and starts the service (S48).

【0053】

Next, with reference to FIG. 5, the process executed on the location information management server 11 in conjunction with the process of FIG. 4 will be described. First, the location information management server 11 determines whether or not the wireless base station 13 has notified the removal (S51), and whether or not the wireless base station 13 has notified the new installation (S53). Here, when the wireless base station 13 notifies the removal (affirmed in S51), the location information management server 11 uses the location registration area management table 11C (Fig. 2) of the own station to remove the wireless base station to be removed. Delete the information in (S52) and reconfigure the location registration area. On the other hand, when there is a new notification from the radio base station 13 (here, the radio base station 13P) (affirmed in S53), in the location registration area management table 11C, the information regarding the location registration area notified from the radio base station 13P is included. Register the information of the newly established radio base station 13P in (S54), reconfigure the location registration area by changing the number of radio base stations 13 in the location registration area (S55), and register the registration in the radio base. Notify station 13 (S56).

【0054】

By the process at the time of new installation of the radio base station 13P described above, the location registration area can be flexibly reconfigured at the time of new installation of the radio base station 13P. In addition, in selecting the location registration area, the state of the location registration area recognized through communication with the surrounding wireless base station 13Q is also taken into consideration, thereby avoiding the problem that the location registration area differs between adjacent wireless base stations. It becomes possible to do.

【0055】

Next, a method related to the reconstruction of the location registration area by the radio base station 13 will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, there are fixed-sized location registration areas 30A, 30B, and 30C. The radio base station 13P in the location registration area 30A periodically or continuously measures incoming traffic and communication traffic (hereinafter collectively referred to as traffic) addressed to its own station, and multiple radio base stations 13Q and 13R (hereinafter collectively referred to as traffic) in the vicinity. The radio base station 13R communicates with a plurality of peripheral radio base stations 13S) to share the traffic information of the radio base stations 13P, 13Q, 13R, and 13S. Then, the radio base station 13P changes the number of radio base stations 13 constituting the location registration area 30 based on the shared traffic information.

【0056】

Here, as a result of measuring the traffic, it is assumed that the traffic amount in the location registration area 30A is small and the traffic amount is large in the location registration areas 30B and 30C. In this case, in order to smooth the traffic amount of each location registration area 30, the area configuration is reconfigured so that a part of the radio base stations in the location registration area 30B and 30C is moved to the location registration area 30A. I do.

【0057】

For example, in the location registration areas 30B and 30C, radio base stations whose distance from the central radio base station (for example, radio base station 13R) is a certain value or more are included in the location registration area 30A (that is, location registration). When area 30A is expanded), priority is given to radio base stations with a lot of communication traffic among the radio base stations in the location registration areas 30B and 30C, while preventing the expanded location registration area 30A from becoming a flying stone at the boundary. Select one or more radio base stations and include the selected radio base stations in the location registration area 30A. As a result, the optimum location registration areas 30A, 30B, and 30C can be configured in consideration of the traffic characteristics as shown in FIG.

【0058】

As the traffic, both the incoming traffic and the communication traffic may be referred to as described above, only the incoming traffic may be measured and referred to, or only the communication traffic may be measured and referred to.

【0059】

Next, the process executed in the radio base station 13P will be described with reference to FIG. First, the radio base station 13P measures the traffic in the radio zone under its own station (S81), and the traffic information obtained by the measurement is communicated with the surrounding radio base stations 13Q and 13R between base stations. (S82), grasp the traffic information of the surrounding radio base stations 13Q, 13R, 13S (S83).

【0060】

Then, the radio base station 13P constitutes the location registration area 30 while preferentially selecting the radio base station having a lot of traffic according to the traffic information as described above based on FIGS. 6 and 7. The location registration area 30 is reconstructed by changing the number of (S84).

【0061】

Further, the radio base station 13P notifies the location information management server 11 of the information of the location registration area 30 after the reconstruction (S85), and also gives the location registration area identifier to the subordinate mobile station 14 via the notification channel. Notify (S86).

【0062】

The process related to the reconstruction of the location registration area by the radio base station described above dynamically changes the number of radio base stations in the location registration area based on the traffic characteristics, which has the effect of smoothing the traffic. At the same time, it has the effect of optimizing the size of the location registration area and improving the channel efficiency.

【0063】

[Second Embodiment] In the second embodiment, when a radio base station is newly installed in a mobile communication system, the location information management server performs the newly installed radio based on the location information from the new radio base station and the location registration area status. Explain the mode in which the location registration area to which the base station should belong is selected, and the mode in which the location information management server dynamically changes the number of radio base stations in the location registration area based on the traffic characteristic information from each radio base station. To do.

【0064】

In the second embodiment, the configuration of the mobile communication system 10 shown in FIG. 1 is the same as that in the first embodiment. However, since the configurations of the location information management server 11 and the radio base station 13 are partially different from those of the first embodiment (FIG. 2), the differences in the configurations will be described with reference to FIG.

【0065】

In the location information management server 11 of FIG. 9, the location registration area 30 to which the new radio base station 13 should belong is selected based on the status of the location registration area 30 and the location information notified from the new radio base station 13. Based on the selection unit 11G to be selected and the traffic characteristics notified from each radio base station 13, the radio base stations 13 constituting each location registration area 30 are averaged so that the traffic in each location registration area 30 is averaged. An increase / decrease unit 11F for increasing / decreasing the number is further provided, and the network communication unit 11B also has a function as an area notification means for notifying the newly installed radio base station 13 of the selected location registration area 30.

【0066】

Further, the wireless base station 13 does not require the selection unit 13D and the increase / decrease unit 13F in FIG. 2, and the network communication unit 13B serves as a position notification means for notifying the position information management server 11 of the recognized position information of its own station. It also functions as a traffic notification means for notifying the location information management server 11 of the traffic characteristics obtained by the measurement. Further, the wireless communication unit 13G functions as a notification means for notifying the mobile station 14 of the location registration area identifier for identifying the location registration area 30 notified from the location information management server 11 by the notification channel.

【0067】

Next, a method of selecting a location registration area by the location information management server 11 when a radio base station is newly installed will be described with reference to FIG.

【0068】

In Fig. 3, it is assumed that the radio base station 13P is newly installed in the location registration area 30A. The newly established radio base station 13P recognizes the position of its own station by GPS or communication with a plurality of surrounding radio base stations 13Q by the recognition unit 13C (Fig. 2). Then, the radio base station 13P notifies the location information management server 11 of the location information obtained by the recognition. The location information management server 11 grasps the location registration area status in the vicinity by referring to the location registration area management table 11C based on the location information, and grasps the location registration area status in the vicinity and the location of the newly installed wireless base station 13P. Based on the above, the location registration area 30A to which the newly established radio base station 13P should belong is selected, and the radio base station 13P is notified.

【0069】

Here, if the newly established radio base station 13P is located near the boundary between the location registration areas 30A, 30B, and 30C, and there are a plurality of location registration areas 30 to which the peripheral radio base station 13Q belongs, location registration is performed. You may select the location registration area 30 to which you should belong so that the incoming traffic for each area 30 is smoothed, or you belong at that time so that the number of radio base stations for each location registration area 30 is smoothed. The location registration area 30 having the smallest number of radio base stations may be selected, or the location registration area 30 may be selected by a selection means other than these.

【0070】

Then, the radio base station 13P that has received the notification belongs to the location registration area 30A, and at the same time, the location registration to which the radio base station 13P belongs to the mobile station 14 (FIG. 9) in the radio zone formed by the radio base station 13P. Notify the location registration area identifier of area 30A and start providing services to the mobile station 14.

【0071】

As a means for the wireless base station 13P to recognize the position of its own station, in addition to using GPS or communication with a nearby wireless base station, communication with a position information management server 11 or a position information recognition means other than the above is used. May be used.

【0072】

Next, the process executed in the radio base station 13P will be described with reference to FIG. First, the radio base station 13P determines whether or not its own station is a radio base station to be removed (S101), and whether or not its own station is a radio base station to be newly installed (S103). To do. Here, if the own station is a radio base station to be removed (affirmed in S101), the radio base station 13P notifies the location information management server 11 that it will be removed (S102). On the other hand, if the radio base station 13P is a radio base station to be newly established (affirmed in S103), the position of the radio base station 13P is determined by GPS or communication with the peripheral radio base station 13Q by the recognition unit 13C (Fig. 9). Is recognized (S104). Then, the location information obtained by recognition is notified to the location information management server 11 (S105), and the location information management server 11 waits for notification of the location registration area (S106).

【0073】

Then, when the location registration area to which the own station should belong, which is selected by the process of the location information management server 11 described later, is notified, the location registration area to which the own station should belong is registered and belongs (S107), and the new establishment is made. By notifying the mobile station 14 in the service area under the radio base station 13P of the above radio base station 13P by the notification channel of the location registration area identifier, the radio base station 13P is notified that the radio base station 13P has been newly established, and the service is started (S108).

【0074】

Next, with reference to FIG. 11, a process executed on the location information management server 11 in conjunction with the process of FIG. 10 will be described. First, the location information management server 11 determines whether or not the wireless base station 13P has notified the removal (S111), and whether or not the wireless base station 13P has notified the new installation (S113). Here, when the wireless base station 13P notifies the removal (affirmed in S111), the location information management server 11 uses the location registration area management table 11C (Fig. 9) of its own station to remove the wireless base station to be removed. Delete the information on page 13 (S112) and reconfigure the location registration area. On the other hand, when the wireless base station 13P notifies the new installation (affirmed in S113), the wireless base station 13P waits for the notification of the location information (S114).

【0075】

Then, when there is a notification of location information from the wireless base station 13P (affirmed in S114), the location registration area management table 11C is referred to based on the notified location information of the wireless base station 13P (S115), and the location registration area Based on the registration information of the management table 11C and the location information of the newly established radio base station 13P, select the location registration area to which the newly established radio base station 13P should belong (S116), and select the selected location registration area. Notify radio base station 13P (S117).

【0076】

The location registration area can be flexibly reconfigured when the wireless base station 13P is newly installed by the selection process by the location information management server 11 when the wireless base station 13P is newly installed. In addition, by selecting the location registration area in consideration of the state of the location registration area managed by the location information management server 11, the problem that the location registration area differs between adjacent wireless base stations, which has been a problem before, can be avoided. It becomes possible.

【0077】

Next, a method related to the reconstruction of the location registration area by the location information management server 11 will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, there are fixed-sized location registration areas 30A, 30B, and 30C. The radio base station 13P in the location registration area 30A periodically or continuously measures incoming traffic and communication traffic (hereinafter collectively referred to as traffic) addressed to its own station, and notifies the location information management server 11 of the measurement results. .. The location information management server 11 changes the number of radio base stations 13 constituting the location registration area 30 based on the notified traffic characteristics, and updates the location registration area management table 11C.

【0078】

Here, as a result of measuring the traffic, it is assumed that the traffic amount in the location registration area 30A is small and the traffic amount is large in the location registration areas 30B and 30C. In this case, in order to smooth the traffic amount of each location registration area 30, the area configuration is reconfigured so that a part of the radio base stations in the location registration area 30B and 30C is transferred to the location registration area 30A. Do.

【0079】

For example, in the location registration areas 30B and 30C, radio base stations whose distance from the central radio base station (for example, radio base station 13R) is a certain value or more are included in the location registration area 30A (that is, location registration). When area 30A is expanded), priority is given to radio base stations with a lot of communication traffic among the radio base stations in the location registration areas 30B and 30C, while preventing the expanded location registration area 30A from becoming a flying stone at the boundary. Select one or more radio base stations and include the selected radio base stations in the location registration area 30A. As a result, the optimum location registration areas 30A, 30B, and 30C can be configured in consideration of the traffic characteristics as shown in FIG.

【0080】

As in the first embodiment, as the traffic, both the incoming traffic and the communication traffic may be referred to as described above, only the incoming traffic may be measured and referred to, or only the communication traffic may be measured. You may refer to it.

【0081】

Next, the process executed in the radio base station 13P will be described with reference to FIG. First, the radio base station 13P measures the traffic in the radio zone under its own station (S121), and notifies the location information management server 11 of the traffic information obtained by the measurement (S122). Then, it waits for notification of the location registration area from the location information management server 11 (S123).

【0082】

Then, as a result of the reorganization by the location information management server 11 described later, when the location registration area to which the radio base station 13P should belong is notified (affirmed in S123), registration is performed in the notified location registration area. By notifying the mobile station 14 that belongs to (S124) and is under the control of the radio base station 13P by the notification channel of the location registration area identifier, the mobile station is notified that the radio base station 13P has been newly established. Start service for 14 (S125).

【0083】

Next, with reference to FIG. 13, the process executed on the location information management server 11 in conjunction with the process of FIG. 12 will be described. First, the location information management server 11 waits for notification of traffic information from the radio base station 13P (S131), and when it receives the notification, analyzes the traffic characteristics in the location registration area (S132).

【0084】

Then, the location information management server 11 preferentially selects a radio base station having a lot of traffic according to the traffic information as described above based on FIGS. 6 and 7, and the location information management server 11 constitutes the location registration area 30. The location registration area 30 is reconstructed by changing the number of 13 (S133).

【0085】

Further, the location information management server 11 notifies the radio base station 13 in the location registration area 30 after the reconstruction of the location registration area identifier of the new location registration area 30 (S134), and the location registration area management table 11C Update (S135).

【0086】

The process related to the reconstruction of the location registration area by the location information management server 11 described above dynamically changes the number of radio base stations in the location registration area based on the traffic characteristics, so that the traffic is smoothed. At the same time, it has the effect of optimizing the size of the location registration area and improving the channel efficiency.

【0087】

[Effect of the invention]

As described above, according to the present invention, as described above, according to the present invention, the location registration area can be flexibly reconfigured when a radio base station is newly installed, and at the same time, adjacent to each other, which has been a problem before. It is possible to avoid the problem that the location registration area is different between wireless base stations.

【0088】

In addition, since the number of radio base stations in the location registration area is dynamically changed based on the traffic characteristics, it has the effect of smoothing the traffic, and at the same time, the size of the location registration area is optimized to improve the channel efficiency. It has the effect of improving.

[Simple explanation of drawings]

[Figure 1]

It is an overall block diagram of the mobile communication system which concerns on 1st and 2nd Embodiment.

[Figure 2]

It is a functional block diagram which shows the structure of each element of the mobile communication system of 1st Embodiment.

[Fig. 3]

It is a figure for demonstrating the location registration area composition method at the time of new construction of the radio base station which concerns on 1st and 2nd Embodiment.

[Fig. 4]

It is a flow chart which shows the process by the radio base station at the time of newly constructing the radio base station of 1st Embodiment.

[Fig. 5]

It is a flow chart which shows the process by the position information management server at the time of newly installing a radio base station of 1st Embodiment.

[Fig. 6]

It is a figure for demonstrating the method which concerns on the reconstruction of the location registration area which concerns on 1st and 2nd Embodiment.

[Fig. 7]

FIG. 6 is a diagram showing a state after reconstruction.

[Fig. 8]

It is a flow chart which shows the process by a radio base station at the time of reconfiguring the location registration area of 1st Embodiment.

[Fig. 9]

It is a functional block diagram which shows the structure of each element of the mobile communication system of 2nd Embodiment.

[Fig. 10]

It is a flow chart which shows the process by the radio base station at the time of newly constructing a radio base station of 2nd Embodiment.

[Fig. 11]

It is a flow chart which shows the process by the position information management server at the time of newly installing a radio base station of 2nd Embodiment.

[Fig. 12]

It is a flow chart which shows the process by a radio base station at the time of reconfiguring the location registration area of 2nd Embodiment.

[Fig. 13]

It is a flow chart which shows the process by the location information management server at the time of reconfiguring the location registration area of the 2nd embodiment.

[Explanation of symbols]

10 ... Mobile communication system, 11 ... Location information management server, 11A ... Control unit, 11B ... Network communication unit, 11C ... Location registration area management table, 11D ... Registration unit, 11E ... Delete section, 11F ... Increase / decrease section, 11G ... Select section, 12 ... Network, 13, 13P, 13Q ... Radio base station, 13A ... Control section, 13B ... Network Communication unit, 13C ... recognition unit, 13D ... selection unit, 13E ... measurement unit, 13F ... increase / decrease unit, 13G ... wireless communication unit, 14 ... mobile station, 20 ... Wireless zone, 30 ... location registration area.