JP2003174678A - Communication system, control server, service providing server, wireless base station, wireless system, wireless terminal, and communication control method - Google Patents

Abstract

(57) [Summary] To provide a communication system capable of effectively providing a plurality of services. In a normal mode, a general user server (6) provides a general user service to a general user wireless terminal (1) via a wireless base station (3), and a business server (7) controls the wireless base station (4). Through this, a business service is provided to the station staff radio terminal 2. For example, in an emergency such as a train stop due to a signal failure, the control server 8
Instructs the server 6 to stop the service. The instructed server 6 temporarily stops providing general services. During this time, business services can monopolize network resources. Upon normal recovery, the control server 8 instructs the server 6 to restart the service. The designated server 6
Resuming public services.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system, a control server, a service providing server, a wireless base station, a wireless system, a wireless terminal and a communication control method.

[0002]

2. Description of the Related Art With the development of wireless technology and miniaturization of wireless devices, mobile phones have become popular in the past few years with unprecedented momentum. With the current mobile phone devices, it is now possible to exchange not only phone calls, but also mail exchanges and simple still image exchanges just like PCs. Recent latest models are equipped with JAVA (registered trademark), and even a game with dedicated personal computer software or a dedicated board ten years ago, for example, can be enjoyed with this small device. In addition, the third-generation mobile phone system, which has recently started a test service, enables even video transmission.

On the other hand, a PDA (Personal Dig)
There is a so-called ital assistant. It can be said that this is a downsized version of the PC's functions. Currently, it is often used as the equivalent of the system notebook. Also, given that the current PDA's performance is equivalent to that of a personal computer a few years ago, it is conceivable that something equivalent to the present personal computer will eventually be condensed into a small terminal such as a mobile phone. It's not difficult. At that time, it would be natural that there would be a desire to enjoy the same capabilities in the mobile environment as the Internet access currently performed in homes and businesses.

It has been reported that such a mobile phone or PDA is as important as a wallet for those who own it. For example, it is often said that if you forget to leave your mobile phone at home and notice it, you will go home to pick it up if you allow it.
There is an increasing movement to give mobile phones having such a meaning the same meaning as that of the wallet, that is, to have money belonging to itself or securities.

By the way, in the railway, the improvement of the work of the station staff and the crew has always been treated as a re-priority among important matters to be solved. However, there has been an aspect that the wireless technology including terminals that progress at a rapid speed has not been fully utilized for improving the work of station staff and crew. For example, in the case of a Shinkansen stuck accident that occurred recently, even a passenger who owns a mobile phone obtains information before a crew member.

[0006]

In the railway, a network is installed in the station yard to provide general users such as passengers with services for general users that can be used from their mobile terminals, etc. A system that provides a business service that can be used from the mobile terminal or the like is being considered.

[0007] Here, there are differences in the nature and importance of the service for general users and the service for business that coexist in the same network. That is, compared to the latter, in the service for general users, it is sufficient to finish a certain service within a certain fixed time (relatively long time) (for this fixed time, for example, the service is provided only to passengers on the platform. It is assumed that the system will provide some time less than the average train waiting time at the station). As for the bandwidth, even if it is the best effort, there are many cases where there is no particular problem as compared with the latter. On the other hand, in the business service, it may be possible to take a considerably long time such as in normal times, while there is a case where the service must be provided in almost real time such as in an emergency.

However, conventionally, when operating a service for general users and a service for business on the same network, a technique for making both services more effective by paying attention to the difference in their properties and importance. There wasn't.

The present invention has been made in consideration of the above circumstances, and provides a communication system, a control server, a service providing server, a radio base station and a communication control method capable of effectively providing a plurality of services. To aim.

The radio system includes a direct spread system and a frequency hopping system. When the area of the radio base station of the direct spread system and the area and frequency band of the radio base station of the frequency hopping system overlap, There was a problem that caused interference.

The present invention has been made in consideration of the above circumstances, and provides a radio system, a radio base station, a radio terminal, and a communication control method that can use the direct spreading method and the frequency hopping method together without interference. With the goal.

[0012]

The present invention is a communication system in which one or a plurality of servers provide a plurality of types of services to a wireless terminal via a wireless base station, and a predetermined condition is met. When established, a control server is provided for performing control for stopping or limiting the provision of a predetermined part of the services of the plurality of types of services.

The present invention also provides a first radio base station connected to a predetermined network for connecting a first radio terminal, and a second radio terminal connected to the network. A second wireless base station, a first server connected to the network, which provides a first service to the first wireless terminal via the first wireless base station, and a network Is connected to the second wireless terminal via the second wireless base station
A second server for providing the service of, and when connected to the network and a predetermined first condition is satisfied, with respect to the first server or the first wireless base station, The control for stopping or limiting the provision of the first service is performed, and when the predetermined second condition is satisfied during the suspension or the limitation of the provision of the first service, the first A control server for controlling the server or the first radio base station to restart or release the restriction of the first service is provided.

Further, the present invention is a control server used in a communication system, wherein one or a plurality of servers provide a plurality of types of services to a wireless terminal via a wireless base station, which is predetermined. A first control means for performing control for stopping or limiting the provision of a predetermined part of the plurality of types of services when the first condition is satisfied. Characterize.

Further, the present invention is a service providing server, which is connected to a predetermined network and provides a predetermined service to a wireless terminal via the network and a predetermined wireless base station, wherein On the other hand, the means for performing the process for providing the service, and when receiving the first instruction from the outside, temporarily stop the service provision or shift to the limited service provision, and During suspension or provision of limited services,
When a second instruction is received from the outside, it is provided with a means for performing control for restarting the service provision or returning to the unlimited service provision.

Further, the present invention is a wireless base station for connecting a wireless terminal in providing a service in a communication system for providing a service from a server to the wireless terminal. And the first instruction from the outside, the connection with all wireless terminals is prohibited, or the number of connectable wireless terminals is limited, and the connection is prohibited or the connection is restricted from the outside. When the second instruction is received, a means for performing control for canceling connection prohibition or connection restriction is provided.

The present invention also provides a communication system for providing services from a server to a plurality of types of wireless terminals,
A wireless base station for connecting the wireless terminal in providing the service, a means for connecting the wireless terminal, and a predetermined type when receiving a first instruction from the outside. Means for prohibiting the connection with the wireless terminal, and performing a control for canceling the connection with the wireless terminal of the predetermined type when a second instruction is received from the outside while the connection is prohibited. It is characterized by having and.

Further, the present invention relates to a connection history of a wireless base station for connecting the wireless terminal in providing the service in a communication system for providing the service from the server to the wireless terminal. Storage means for storing information, and when a connection request is received from a plurality of the wireless terminals and connection requests of all the wireless terminals cannot be permitted, a terminal to which the connection request is permitted is selected based on the information on the connection history. And a selection unit that selects a connection request from a plurality of wireless terminals that have received a connection request and has a history of connection within a certain period of time. Characterized by lowering the ranking.

Further, the present invention provides a radio system including a direct spread radio base station and a frequency hopping radio base station having an area at least partially overlapping with the area of the radio base station, The frequency hopping radio base station is characterized in that hopping is performed using a frequency band different from the frequency band used by the direct spread radio base station.

The present invention also provides a radio system including a direct spread radio base station and a frequency hopping radio base station having an area at least partially overlapping with the area of the radio base station, When at least a part of the frequency used by the frequency hopping wireless base station and the frequency used by the direct spreading wireless base station overlap, the frequency hopping wireless base station and the direct spreading wireless base It is characterized in that any one of the radio base stations among the stations performs control for stopping the output at least at the overlapping frequency.

Further, the present invention provides a means for inputting a frequency band to be used in a frequency hopping type radio base station having an area where at least a part of the area of the direct spread type radio base station overlaps, and input means. It is characterized by further comprising means for determining a hopping frequency and a hopping sequence based on the frequency band thus generated, and means for transmitting and receiving based on the hopping sequence.

Further, according to the present invention, a frequency band to be used is input to a wireless terminal connected to a frequency hopping wireless base station having an area at least partially overlapping with an area of a direct spreading wireless base station. Means for determining a hopping frequency and a hopping sequence based on the input frequency band,
Means for transmitting and receiving based on the hopping sequence.

It should be noted that the present invention relating to the apparatus also holds as the invention relating to the method, and the present invention relating to the method also holds as the invention relating to the apparatus. Further, the present invention relating to an apparatus or a method is provided for causing a computer to execute a procedure corresponding to the present invention (or for causing a computer to function as a unit corresponding to the present invention, or for a computer to have a function corresponding to the present invention. It is also realized as a program (for realizing) and as a computer-readable recording medium recording the program.

According to the present invention, it is possible to effectively provide a plurality of services.

Further, according to the present invention, the direct spreading method and the frequency hopping method can be used together without interference.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
2 shows an example of the configuration of a communication system according to the embodiment.

This communication system provides a service for general users that can be used from the mobile terminal to general users such as passengers by providing a network inside the railway station yard, and at the same time, to the station staff etc. It provides business services that can be used from.

In FIG. 1, reference numeral 1 denotes a general user wireless terminal used by general users such as passengers.

Reference numeral 2 denotes a station clerk wireless terminal used by the station clerk for business purposes.

Reference numeral 3 is a wireless base station for a general user wireless terminal.

Reference numeral 4 is a radio base station for a station clerk radio terminal.

Reference numeral 5 is a station premises network.

Reference numeral 6 denotes a general user server for providing a general user service.

Reference numeral 7 is a business server for providing a business service.

Reference numeral 8 is a control server for controlling the servers 6 and 7.

Although only one general user wireless terminal 1 and one station staff wireless terminal 2 are shown in FIG. 1, there are actually a plurality of terminals. Further, the radio base station 3 for a general user radio terminal and the radio base station 4 for a station clerk radio terminal are respectively installed at a plurality of appropriate locations within the station yard (however, at least It is also possible to install a system in one place only). In addition, general user server 6 and business server 7
May be one or more than one. The control server 8 may be configured as one node, or may be configured as a plurality of nodes distributed in the network.

Further, the server 6 for general users and the server 7 for business use may be integrally configured by one server. That is, one server may provide a service for general users and a service for business. Further, such a server may be configured as one node, or may be configured as a plurality of nodes distributed in the network.

The protocol used in the station premises network 5 is not particularly limited. For example, a network according to TCP / IP may be used.

The radio system used is not particularly limited.
Further, the wireless system used between the general user wireless terminal 1 and the wireless base station 3 is the same as the wireless system used between the station staff wireless terminal 2 and the wireless base station 4. Or a different one (for example, the wireless system used between the general user wireless terminal 1 and the wireless base station 3 is the IEEE 802.11 frequency hopping system (F
In H), the wireless system used between the station staff wireless terminal 2 and the wireless base station 4 may be an IEEE 802.11 direct spread system (DS), or the like).

FIG. 2 shows an example of a schematic configuration of the control server 8. In the example of FIG. 2, a transmission / reception unit 81 for transmitting / receiving data and the like, a server processing unit 82 for performing processing for controlling the servers 6 and 7, an instruction or the like from an administrator, an administrator, etc. An input / output unit 83 for presenting information to and a wired interface 84 for connecting to a network are included.

FIG. 3 shows an example of a schematic configuration of the general user server 6. In the example of FIG. 3, a transmission / reception unit 61 for transmitting / receiving data and the like, and a server processing unit 62 for performing processing for providing information provision or services such as Internet connection in response to a request from the general user wireless terminal 1. An information storage unit 63 for general users for storing information provided to the wireless terminal 1 for general users, and a wired side interface 64 for connecting to a network. The information stored in the general user information storage unit 63 is given from the control server 8 via the local network 5, directly input to the general user server 6, or given from outside the local network 5. In some cases, it is given via the local network 5 which is provided.

FIG. 4 shows an example of a schematic configuration of the business use server 7. In the example of FIG. 4, the transmitting / receiving unit 71 for transmitting and receiving data and the like, providing information in response to a request from the station clerk wireless terminal 2, and the station clerk in response to an instruction from the control server 8. A server processing unit 72 that performs processing for communicating information to the wireless terminal 2 for business, an information storage unit 73 for business that stores information provided to the wireless terminal 2 for station staff, and a network connection A wired side interface 74 for The information stored in the business information storage unit 73 is given from the control server 8 via the premises network 5, directly input to the business server 7, or the premises provided from outside the premises network 5. It may be given via the network 5.

FIG. 5 shows an example of a schematic configuration of the general user wireless terminal 1. In the example of FIG. 5, a request is sent to the transmission / reception unit 11 for transmitting / receiving data or the like via the wireless link and the general user server 6 to obtain information,
Alternatively, a client processing unit 12 for performing a process for connecting to the Internet, an input / output unit 13 for inputting an instruction or the like from a general user who is a user of the wireless terminal, and presenting information to the general user, Antenna 1
Including 4. Note that the general user wireless terminal 1 may be, for example, dedicated to the present system, or may also serve as a mobile phone terminal or a PHS terminal.

FIG. 6 shows an example of a schematic configuration of the station clerk wireless terminal 2. In the example of FIG. 6, the transmitting / receiving unit 21 for transmitting and receiving data and the like via the wireless link, the business server 7
A request to the client processing unit 22 that performs processing for acquiring information or acquiring pushed information, and inputs instructions and the like from a station clerk who is a user of the wireless terminal. An input / output unit 23 and an antenna 24 for presenting information to the station clerk and the like are included. Note that the station clerk wireless terminal 2 may be, for example, dedicated to the present system, or may also serve as a mobile phone terminal or a PHS terminal.

In the communication system of FIG. 1, in the normal time, the same station premises network 5 is shared to provide the service for general users and the service for business, respectively. The service is restricted so that the business service is prioritized.

First, an example of stopping the service for general users in an emergency will be described.

FIG. 7 shows an example of the processing procedure of the control server 8 in this case. Further, FIG. 8 shows an example of the processing procedure of the server 6 for general users in this case.

In the normal mode, the general user server 6 provides the general user service to the general user who has the general user wireless terminal 1 through the station premises network 5 / radio base station 3 ( S1
1) On the other hand, the business use server 7 provides a business use service to the station clerk or the like having the station clerk wireless terminal 2 through the station premises network 5 / radio base station 4. That is, the wireless terminal 1 receives the service of the general user server 6 through the wireless base station 3, and the wireless terminal 2 receives the service of the business server 7 through the wireless base station 4.

Here, it is assumed that a predetermined trigger for shifting to the emergency mode occurs, such as occurrence of some trouble in the railway train system (for example, train stop due to signal failure).

In this case, for example, when the administrator or the like inputs an instruction to shift to the emergency mode to the control server 8, the control server 8 directs the general user server 6 to
An instruction message instructing that the service should be stopped is transmitted (S1, S2).

Upon receiving this instruction message, the general user server 6 suspends the general service provided (S12, S13).

However, it is assumed that there is a predetermined trigger such as the restoration of the railway train system to shift to the normal mode.

In this case, for example, when the administrator or the like inputs an instruction to shift to the normal mode to the control server 8, the control server 8 directs the general user server 6 to
An instruction message instructing that the service should be restarted is transmitted (S3, S4).

Upon receiving this instruction message, the general user server 6 restarts the general service provided (S14, S15).

Next, an example will be described in which, in an emergency, the service for general users (in normal times) is stopped and the emergency service (for example, providing emergency information) is performed.

FIG. 9 shows an example of the processing procedure of the control server 8 in this case. Further, FIG. 10 shows an example of the processing procedure of the server 6 for general users in this case.

As in the case described above, in the normal mode, the general user server 6 provides the general user service (S31, S32), while the business server 7 provides the business service. ing.

Here, it is assumed that a predetermined trigger for shifting to the emergency mode has occurred.

In this case, for example, when the administrator or the like inputs an instruction to shift to the emergency mode to the control server 8, the control server 8 directs the general user server 6 to
While stopping the normal service and transmitting an instruction message instructing that the emergency service should be started (S21, S22), for example, current train operation information indicating what the current train operation is like like,
Emergency information for general users is transmitted as needed (for example, each time the information is updated) (S23).

Upon receiving this instruction message, the general user server 6 temporarily suspends the normal service provided to the general user and starts the emergency service (S32, S33). When the emergency information for general users is received, the information is transmitted to the wireless terminal 1 through the wireless base station 3 (as one function of the emergency service) (S34).

Then, it is assumed that a predetermined trigger for shifting to the normal mode occurs.

In this case, for example, when the administrator or the like inputs an instruction to shift to the normal mode to the control server 8, the control server 8 directs the general user server 6 to
An instruction message is sent to instruct that the emergency service should be terminated and the normal service should be restarted (S2).
4, S25).

Upon receiving this instruction message, the general user server 6 terminates the emergency service provided and restarts the normal general service (S14, S15).

As described above, by stopping or limiting the service for general users in an emergency, it becomes possible to operate the service for business smoothly.
Improving operational efficiency, such as quick delivery of information to station employees.

In the above description, the control server 8 did not give an instruction or notification to the business use server 7 at the time of shifting to the emergency mode or at the time of shifting to the normal mode. You may

Further, in the above, in the emergency mode, the general user server 6 is controlled in order to stop or limit the general user service, but instead of or together with it, the general user radio is used. The wireless base station 3 for the terminal is controlled so as to temporarily stop the communication with the wireless terminal 1 or not allow the call from the wireless terminal 1 and / or the incoming call to the wireless terminal 1. A method is also possible. Further, instead of prohibiting communication with all the wireless terminals 1, the number of wireless terminals 1 that can be simultaneously connected may be limited to a value smaller than that in normal times.

In this case, when the wireless base station 3 receives an instruction to shift to the emergency mode from the control server 8, for example, the wireless base station 3 prohibits or connects all wireless terminals 1 as described above. When the instruction to shift to the normal mode is received from the control server 8 while limiting the number of possible wireless terminals 1 and during the connection prohibition or the connection limitation, the connection prohibition or the connection limitation is released, The control should be performed so as to return to the normal operation.

In an emergency, not all of the wireless base station 3 but a part of the wireless base station 3 may be temporarily stopped from communicating with the wireless terminal 1, or a call from the wireless terminal 1 and / or the wireless terminal 1 may be made. A control method is also possible so as not to allow incoming calls to.

Further, the wireless base station 3 which has temporarily stopped communication with the wireless terminal 1 does not completely stop communication with the wireless terminal 1, but instead, for example, makes a call from the wireless terminal 1 and / or wirelessly. When there is an incoming call to the terminal 1, the wireless terminal 1
Alternatively, a message to the effect that “communication is stopped due to an emergency” may be transmitted.

In the above description, the radio base station 3 for the general user radio terminal and the radio base station 4 for the station staff radio terminal are described as being provided independently, but they are the same. The same is possible when the wireless base station has a system configuration in which both the general user wireless terminal 1 and the station staff wireless terminal 2 are communication targets.

In this case, in order to stop or limit only the communication between the wireless base station and the general user wireless terminal 1, for example, the following may be performed. That is,
Each of the wireless terminals 1 and 2 is made to hold type information indicating whether it is a general user wireless terminal or a station clerk wireless terminal, and when it shifts to the emergency mode, the wireless base station When setting up a call between the station and the wireless terminal, the wireless base station checks the type information of the target wireless terminal,
If it is a wireless terminal for general users, disallow connection,
If the wireless terminal is for a station employee, the connection may be permitted.

In the above description, an example in which the administrator or the like directly inputs to the control server 8 an instruction to enter the emergency mode or an instruction to enter the normal mode has been described. , Instead of or with it,
Other devices in the premises network 5 and the premises network 5
Other methods such as a method of giving an instruction from an external device or a configuration in which the control server 8 automatically makes a judgment based on data from the outside and gives an instruction are also possible.

In the above, for example, when there is a wireless terminal capable of receiving both the service for general users and the service for business, the wireless terminal serves as a station staff wireless terminal in an emergency. The wireless terminal for the general user may be fully functioned, and may be restricted or may not function as a general user wireless terminal.

In the following, an example will be described in which, within a certain period of time, control is performed such that connection to a wireless terminal that has received a service is refused or connection priority is lowered. Note that this configuration can be implemented independently of the configurations described above, but here, a case where this configuration is applied to the wireless base station 3 of FIG. 1 will be described as an example. Also here, only in case of emergency,
A case where the above control is performed will be described as an example (may be applied to normal times).

FIG. 11 shows an example of a schematic configuration of the radio base station 3 in this case. In the example of FIG. 11, a transmission / reception unit 31 for transmitting / receiving data and the like, a determination unit 32 for determining connection availability, a determination condition (determination criterion) for the determination, and a condition for storing the connection status of the wireless terminal. Storage unit 33, antenna 3
4, including the wired interface 35.

As an example of the above judgment conditions, (1) connection is restricted in the emergency mode. (2) When the connection is restricted (assuming that the actual number that can be accommodated is a predetermined number exceeding three), three wireless terminals are
The upper limit is the number of wireless terminals that can be connected at the same time. (3) If there are simultaneous connection requests from wireless terminals exceeding the remaining connectable number, connection requests from wireless terminals that have been connected within 5 minutes are rejected.

(4) Even if the number of connectable remaining terminals is still exceeded by (3), if the number of wireless terminals having no connection history is less than or equal to the remaining connectable number, the wireless terminals having no connection history are connected. Allow connection requests.

(5) If the remaining number of connectable devices is still exceeded by (4), the number of wireless terminals corresponding to the remaining number of connectable devices is randomly selected. Alternatively, there is also a method of once rejecting all connection requests from the target wireless terminal.

Since the connection condition of the wireless terminal is used as one of the determination criteria in the above determination conditions, the wireless terminal is uniquely identified in the condition storage unit 33 of the wireless base station 3 in FIG. Information and the connection status of the wireless terminal (for example, "Connected", "Disconnected x minutes ago" or "(M month D) disconnected at H: M", "Connected" “No”, etc.) are associated and stored. Note that this information may be deleted for each wireless terminal, for example, after a lapse of a certain period of time after disconnection (for each entry or with identification information left). Alternatively, the number of entries may be limited, and overwrite updating may be sequentially performed.

FIG. 12 shows an example of the processing procedure of the radio base station 3 in this case. That is, when the connection request is made from the wireless terminal at the time of executing the above connection restriction, if the number of the terminals satisfies the number restriction (S41), all the connections are permitted (S42). If the number limit is not satisfied (S41), the wireless terminal is selected within the number limit according to the above determination condition, and the connection is permitted only for the selected wireless terminal (S43).

For example, it is assumed that the wireless terminals V and W are connected to the wireless base station 3 as shown in FIG.

At this time, the connection status of each wireless terminal held in the wireless base station 3 is as follows. The wireless terminal V is currently connected to the wireless base station 3.

The wireless terminal W is currently connected to the wireless base station 3.

The wireless terminal X disconnects from the wireless base station 3 about two minutes ago.

The wireless terminal Y disconnects from the wireless base station 3 about 10 minutes ago.

The wireless terminal Z has not yet connected to the wireless base station 3 (note that the entry itself does not exist, the wireless terminal Z is still connected to the wireless base station 3). It may be possible to indicate that there is no).

Here, it is assumed that the wireless terminals X, Y, Z issue a connection request to the wireless base station 3.

The radio base station 3 which has received the connection request from the radio terminals X, Y, and Z recognizes that the connection request from the radio terminal XYZ has been made in the judging section 32. Then, the determination unit 3
Refers to the information stored in the condition storage unit 33,
For example, the following judgment is made.

According to the above judgment condition (3), the connection from the wireless terminal A is rejected.

Further, the judging section 32 reads the current connection status from the transmitting / receiving apparatus 31.

The number of current connections = 2 is subtracted from the upper limit number = 3 of the above determination condition (2) to obtain the above determination condition (4).
It is recognized that the remaining connectable number of 1 is 1, that is, another wireless terminal can be accommodated. In this case, the wireless terminal Z can be selected from the above determination condition (4).

As a result, the wireless base station 3 rejects the connection request of the wireless terminal Y and connects to the wireless terminal Z.

By doing so, it becomes possible to provide the wireless terminal with the opportunity of connection as fairly as possible and to provide information.

Note that the above judgment conditions are examples.
Various variations are possible for the determination condition.

When the above configuration is applied to a general base station, for example, the above-mentioned determination condition (1) is deleted, and the above-mentioned determination condition (2) is set to the number of simultaneously connectable wireless terminals. The upper limit number may be the actual number that can be accommodated. Of course, also in this case, various variations can be made in the determination condition.

In the above example, there are two types of services. However, in a system having three or more types, if provision of some of the services is stopped or limited under certain conditions. However, the present invention is applicable.

Further, although the station premises network has been described above as an example, it can be applied to other networks such as a corporate LAN.

(Second Embodiment) FIG. 14 shows a configuration example of a communication system according to a second embodiment of the present invention.

101 is (for example, IEEE802.1
1 is a wireless terminal having a wireless device that employs a direct spread system, and 102 is a wireless terminal that has a wireless device that employs a frequency hopping system (for example, in IEEE 802.11).

Reference numeral 103 is a radio base station having radio equipment adopting the direct spread method, and 104 is a radio base station having radio equipment adopting the frequency hopping method.

300 is the area of the radio base station 103, 4
00 is the area of the wireless base station 104.

Reference numeral 105 is a network, and the radio base stations 103 and 104 are connected via the network 105.

Note that, for example, a server device (not shown) may be connected to the network 105 and the server device may communicate with the wireless terminal 101 or the wireless terminal 102.

Although only one wireless terminal 101 and one wireless terminal 102 are shown in FIG. 14, in reality,
There are multiple each. Moreover, a plurality of wireless base stations 103 and 104 may exist respectively.

The protocol used in the network 105 is not particularly limited. For example, a network according to TCP / IP may be used.

FIG. 15 shows a configuration example of the wireless terminal 102 according to the frequency hopping method of this embodiment. As shown in FIG. 15, the wireless terminal 102 includes a hopping frequency generation unit 121, a frequency band input unit 122, and a transmission / reception unit 12.
3, the antenna 124 is provided.

FIG. 16 shows a configuration example of the radio base station 104 according to the frequency hopping method of this embodiment. As shown in FIG. 16, the radio base station 104 includes a hopping frequency generation unit 141, a frequency band input unit 142, a transmission / reception unit 143, an antenna 144, and a wired interface 14.
It is equipped with 5.

Here, as shown in FIG. 14, the area 300 of the base station 103 of the direct spreading method and the area 400 of the base station 104 of the frequency hopping method overlap each other. If the frequency band of the base station 103 according to the direct spread method is (a) in FIG. 17 and the frequency band of the base station 104 according to the frequency hopping method is (b) in FIG. 17, most of the frequency bands are It causes interference.

Therefore, in the present embodiment, the base station 104 according to the frequency hopping method performs hopping by using a frequency band different from the frequency band used by the base station 103 according to the direct spreading method.

For example, the base station 103 according to the direct spread method.
17 (c), and the frequency band of the base station 104 by the frequency hopping method is shown in FIG. 17 (d).

FIG. 18 shows an example of the processing procedure of the radio base station and the radio terminal according to the frequency hopping method.

First, the allocated frequency band ((d) of FIG. 17) is input to the frequency band input section 142 of the base station 104 by the frequency hopping method (S51).

The hopping frequency generator 141 determines the hopping frequency and the hopping sequence based on the input frequency band ((d) of FIG. 17) (S5).
2).

Thereafter, the transmission / reception unit 143 performs transmission / reception based on the decided hopping sequence (S5).
3).

On the other hand, the wireless terminal 102 also has the wireless base station 104.
The same hopping sequence as that of the radio base station 104 is adopted to perform transmission / reception. That is, the allocated frequency band ((d) of FIG. 17) is input to the frequency band input unit 122 of the wireless terminal 102. The hopping frequency generator 122 receives the input frequency band (see FIG. 17).
(D)), the hopping frequency and the hopping sequence are determined, and thereafter, the transmission / reception unit 123 performs transmission / reception based on the determined hopping sequence.

The wireless terminal 101 based on the direct diffusion method is used.
The wireless base station 103 may have a conventional configuration with the assigned frequency band ((c) in FIG. 17) set in advance.

By the way, the frequency band allocated to the radio terminal 102 / base station 104 by the frequency hopping method and the radio terminal 101 / radio base station 1 by the direct spreading method.
The frequency band assigned to 03 may be changed at an appropriate timing.

In this case, the above procedure may be repeated for the radio terminal 102 / base station 104 based on the frequency hopping method.

On the other hand, the wireless terminal 101 based on the direct spreading method
/ For the radio base station 103, the setting of the allocated frequency band may be changed from the outside.

As a method of giving the data of the frequency band allocated to the wireless terminal 101 or 102 to the wireless terminal 101 or 102, in addition to the method of directly inputting by the user to the wireless terminal, the wireless base station 103 or the wireless terminal 103 is used. Base station 104
From the wireless terminal 101 or the wireless terminal 10 via a wireless link
2 to transfer data to the wireless terminal 101 or the wireless terminal 1 via the wireless base station 103 or the wireless base station 104 from a server device (not shown) connected to the network 105.
Various methods are possible, such as a method of transferring data to 02. For the wireless base station 103 and the wireless base station 104,
As a method of giving the data of the frequency band allocated to it, in addition to the method in which the user directly inputs to the wireless base station, a wireless base station 103 or a wireless base station 104 from a server device (not shown) connected to the network 105 is used.
Various methods are possible such as a method of transferring data to the wireless terminal 101 or the wireless terminal 102 via the.

By the above, interference between the radio base station of the direct spreading system and the radio base station of the frequency hopping system can be avoided, and the capabilities of both radio base stations can be maximized. Become.

In the above description, all the radio base stations according to the direct spread method use the same frequency band, and all the radio base stations according to the frequency hopping method use the same frequency band, but according to the frequency hopping method. Some radio base stations use different frequency bands,
Also, a configuration is possible in which there are radio base stations that use different frequency bands among direct-spreading radio base stations (however, there are direct-spreading radio base stations and frequency-hopping radio base stations). , Shall not use the same frequency band).

In the above description, the frequency bands that do not overlap are assigned to the radio base station using the direct spread method and the radio base station using the frequency hopping method.
Without allocating non-overlapping frequency bands in advance,
For example, during operation, after the fact that the overlapping of the frequency bands is recognized, one of the wireless base stations of the frequency hopping method and the direct spreading method is used to eliminate the overlapping of the frequency bands. The base station may limit the frequency band used.

For example, when the radio base station 104 of the frequency hopping system decides not to use the frequency band of the overlapping portion when the overlapping of the frequency bands is recognized, in the configuration example of FIG. The hopping frequency and the hopping sequence may be determined based on the frequency band with the part deleted, and thereafter, transmission / reception may be performed based on the determined hopping sequence. As a result, the output of the overlapping portion can be stopped.

Further, for example, when the overlapping of the frequency bands is recognized, the radio base station 104 of the frequency hopping system is used.
However, if you decide not to use the overlapping frequency band, the output itself is stopped until the duplication is resolved (for example, until the communication between the wireless base station and the wireless terminal by the direct spreading method is completed). There is also a way to do it.

Further, for example, when the frequency band overlapping is recognized in some of the frequency hopping wireless base stations 104, only the frequency hopping wireless base stations 104 in which the frequency band overlapping is recognized are There is also a method of stopping the output.

Incidentally, regarding the recognition of the overlapping of the frequency bands between the radio base station according to the direct spread method and the radio base station according to the frequency hopping method, the administrator or the like carries out this recognition.
The administrator or the like may set the device for restricting the use of the frequency band directly or via a network or a wireless link. In addition, each device that restricts the use of the frequency band when the overlapping of the frequency band between the wireless base station of the direct spreading system and the wireless base station of the frequency hopping system is detected, The frequency bands to be used may be limited so that the monitoring is performed and the overlapping of the frequency bands is detected when the overlapping of the frequency bands is detected.

In the above description, the radio base station side based on the frequency hopping method limits the limitation, but a method of limiting the radio base station side based on the direct spreading method is also possible.

The first embodiment and the second embodiment can be implemented in combination. For example, the wireless base station 104 of the second embodiment is used as the wireless base station 3 of the first embodiment, and the wireless base station 103 of the second embodiment is used as the wireless base station 4 of the first embodiment. You may use. The reverse is also possible.

Each of the above functions can be realized as software. Further, the present embodiment can be implemented as a program for causing a computer to execute a predetermined means (or for causing a computer to function as a predetermined means or for causing a computer to realize a predetermined function). It can also be implemented as a computer-readable recording medium recording the program.

Note that the configurations illustrated in the embodiments of the present invention are examples, and the present invention is not intended to exclude other configurations, and some of the illustrated configurations may be replaced with other configurations or illustrated. Other configurations that are obtained by omitting a part of the configuration, adding another function or element to the exemplified configuration, or combining them are possible. Also, another configuration logically equivalent to the exemplified configuration,
Other configurations including a portion logically equivalent to the exemplified configuration, another configuration logically equivalent to the main part of the exemplified configuration, and the like are possible. Further, another configuration that achieves the same or similar purpose as the exemplified configuration, another configuration that achieves the same or similar effect as the exemplified configuration, and the like are possible. Further, various variations of the various constituent parts illustrated in the embodiments of the present invention can be implemented in an appropriate combination. Further, the embodiments of the present invention include an invention as an individual device, an invention as to two or more related devices, an invention as an entire system, an invention as to a component inside an individual device, or a method corresponding thereto. It is intended to encompass and include inventions related to various viewpoints, stages, concepts or categories such as inventions. Therefore, the invention disclosed in the embodiments of the present invention can be extracted without being limited to the exemplified configurations.

The present invention is not limited to the above-described embodiments, but can be implemented with various modifications within the technical scope thereof.

[0134]

According to the present invention, a plurality of services can be effectively provided.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of a communication system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration example of a control server.

FIG. 3 is a diagram showing a schematic configuration example of a server for general users.

FIG. 4 is a diagram showing a schematic configuration example of a business server.

FIG. 5 is a diagram showing a schematic configuration example of a wireless terminal for general users.

FIG. 6 is a diagram showing a schematic configuration example of a station clerk wireless terminal.

FIG. 7 is a flowchart showing an example of the processing procedure of the control server.

FIG. 8 is a flowchart showing an example of a processing procedure of a server for general users.

FIG. 9 is a flowchart showing another example of the processing procedure of the control server.

FIG. 10 is a flowchart showing another example of the processing procedure of the server for general users.

FIG. 11 is a diagram showing a configuration example of a wireless base station for wireless terminals for general users.

FIG. 12 is a flowchart showing an example of a processing procedure of a wireless base station for a wireless terminal for general users.

FIG. 13 is a diagram for explaining priority control for wireless terminals.

FIG. 14 is a diagram showing a configuration example of a communication system according to a second embodiment of the present invention.

FIG. 15 is a diagram showing a configuration example of a wireless terminal using a frequency hopping method.

FIG. 16 is a diagram showing a configuration example of a radio base station using a frequency hopping method.

FIG. 17 is a diagram showing frequencies in the 2.4 GHz band used in a wireless LAN.

FIG. 18 is a flowchart showing an example of a processing procedure of a wireless base station and a wireless terminal according to a frequency hopping method.

[Explanation of symbols]

1 ... General user wireless terminal 2 ... Station employee wireless terminal 3 ... General user wireless terminal wireless base station 4 ... Station employee wireless terminal wireless base station 5 ... Station premises network 6 ... General User server 7 ... Business server 8 ... Control server 11, 21, 31, 61, 71, 81, 123, 143
... Transmitting / receiving unit 12, 22 ... Client processing unit 13, 23, 83 ... Input / output unit 14, 24, 34, 124, 144 ... Antenna 32 ... Judgment unit 33 ... Condition storage unit 35, 64, 74, 84, 145 ... Wired Side interfaces 62, 72, 82 ... Server processing unit 63 ... General user information storage unit 73 ... Business information storage unit 101 ... Wireless terminal 102 having wireless device that employs direct spreading system ... Radio device that employs frequency hopping system Wireless terminal 103 having a wireless device that employs a direct spread method wireless base station 105 that has a wireless device adopting a frequency hopping system network 121, 141 ... hopping frequency generation unit 122, 142 ... frequency Band input section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ken Saito             1st Komukai Toshiba-cho, Sachi-ku, Kawasaki-shi, Kanagawa             Inside the Toshiba Research and Development Center (72) Inventor Keiji Tsunoda             1st Komukai Toshiba-cho, Sachi-ku, Kawasaki-shi, Kanagawa             Inside the Toshiba Research and Development Center F term (reference) 5K022 EE02 EE04 EE11 EE21                 5K033 BA17 CA19 DA17                 5K067 AA13 AA15 BB04 BB21 CC10                       EE02 EE10 EE16 FF02 GG01                       GG11 HH05 HH12

Claims (25)

[Claims] 1. A communication system in which one or a plurality of servers provide a plurality of types of services to a wireless terminal via a wireless base station, the plurality of types being provided when a predetermined condition is satisfied. Among the above services, a communication system comprising a control server that performs control for stopping or limiting the provision of a predetermined type of service. 2. A first wireless base station connected to a predetermined network for connecting a first wireless terminal, and a second wireless base station connected to the network for connecting a second wireless terminal. A base station, a first server that is connected to the network, and that provides a first service to the first wireless terminal via the first wireless base station, and is connected to the network, A second server for providing a second service to the second wireless terminal via a second wireless base station; and a first condition established in advance, which is connected to the network. The first server or the first server
Control for stopping or limiting the provision of the first service to the wireless base station of, and a predetermined second condition is satisfied during suspension or limitation of the provision of the first service. And a control server that controls the first server or the first wireless base station to restart or release the restriction of the provision of the first service. Communication system. 3. A control server used in a communication system, wherein one or a plurality of servers provide a plurality of types of services to a wireless terminal via a wireless base station, and a predetermined first condition is set. When the above conditions are satisfied, the control is provided with a first control means for performing control for stopping or limiting the provision of a predetermined part of the services of the plurality of types of services. server. 4. The first control means gives an instruction to stop or limit the service to a server providing the service to be stopped or limited. The control server according to item 3. 5. If the communication system has a first server providing a first service and a second server providing a second service, the first control means is configured to control the first server. The control server according to claim 3, wherein the control server instructs the server of (1) to stop or limit the first service. 6. The first control means, when each of the radio base stations is provided to provide only a specific service of the plurality of types of services,
The wireless base station corresponding to the one provided for providing the service to be stopped or restricted, is instructed to stop or restrict the operation thereof. Control server. 7. A first radio base station for providing a first service and a second radio base station for providing a second service are present in the communication system, and the first radio base station is provided. 7. The control server according to claim 6, wherein the control means instructs the first radio base station to stop or limit its operation. 8. When each of the wireless terminals is provided with only a specific service of the plurality of types of services, the first control means, to the wireless base station, The control server according to claim 3, wherein the control server issues an instruction to stop or limit communication with a wireless terminal that receives the service to be stopped or restricted. 9. When the communication system has a first wireless terminal for receiving a first service and a second wireless terminal for receiving a second service,
9. The control according to claim 8, wherein the first control unit instructs the wireless base station to stop or limit communication with the first wireless terminal. server. 10. The apparatus according to claim 1, further comprising second control means for performing control for restarting or releasing the restriction of the service when a second predetermined condition is satisfied. The control server according to any one of items 3 to 9. 11. A service providing server, which is connected to a predetermined network and provides a predetermined service to a wireless terminal via the network and a predetermined wireless base station, the service being provided to the wireless terminal. Means for performing the processing for providing the service, and when receiving the first instruction from the outside, temporarily stop the service provision or shift to the limited service provision,
When a second instruction is received from the outside while the service provision is temporarily stopped or the limited service is provided, control for restarting the service provision or returning to the unrestricted service provision is performed. A service providing server having means for performing. 12. The service providing server according to claim 11, further comprising means for externally acquiring information to be provided to the wireless terminal during the provision of the restricted service. . 13. A communication system for providing a service from a server to a wireless terminal, which is a wireless base station for connecting the wireless terminal in providing the service, and means for connecting the wireless terminal, When the first instruction is received from the outside, the connection with all wireless terminals is prohibited or the number of connectable wireless terminals is limited, and the second instruction is received from the outside while the connection is prohibited or the connection is restricted. And a means for performing control for releasing connection prohibition or connection restriction when receiving the radio base station. 14. A communication system for providing a service from a server to a plurality of types of wireless terminals, which is a wireless base station for connecting the wireless terminals when providing the service, the wireless base station for connecting the wireless terminals. Means and the wireless terminal of the predetermined type when the first instruction is received from the outside, and when the second instruction is received from the outside while the connection is prohibited, A service providing server, comprising: means for performing control for releasing connection prohibition with a predetermined type of wireless terminal. 15. A communication system for providing a service from a server to a wireless terminal, which is a wireless base station for connecting the wireless terminal when providing the service, and stores information regarding a connection history of the wireless terminal. Storage means and selection means for selecting a terminal to which the connection request is permitted based on the information relating to the connection history when connection requests are received from a plurality of the wireless terminals and connection requests of all the wireless terminals cannot be permitted. Wherein the selecting means rejects the connection request or lowers the priority order of allowing the connection request to a wireless terminal having a history of connection among a plurality of wireless terminals having received the connection request within a certain period of time. A wireless base station characterized by. 16. A radio system including a direct spread radio base station and a frequency hopping radio base station having an area at least partially overlapping with the area of the radio base station, wherein A radio system, wherein the radio base station performs hopping by using a frequency band different from a frequency band used by the direct spread radio base station. 17. A radio system including a direct spread radio base station, and a frequency hopping radio base station having an area at least partially overlapping with the area of the radio base station, wherein If at least a part of the frequency used by the wireless base station and the frequency used by the direct spreading wireless base station overlap, which of the frequency hopping wireless base station and the direct spreading wireless base station is used? The wireless base station performs control for stopping output at least at the overlapping frequency. 18. A frequency hopping wireless base station having an area where at least a part of the area of the direct spreading wireless base station overlaps, and means for inputting a frequency band to be used, and the input frequency. A radio base station comprising: means for determining a hopping frequency and a hopping sequence based on a band; and means for transmitting and receiving based on the hopping sequence. 19. A means for inputting a frequency band to be used in a radio terminal connected to a frequency hopping radio base station having an area at least partially overlapping with an area of a direct spread radio base station, A wireless terminal comprising: a unit for determining a hopping frequency and a hopping sequence based on the input frequency band; and a unit for transmitting and receiving based on the hopping sequence. 20. A communication control method in a control server used in a communication system, wherein one or more servers provide a plurality of types of services to a wireless terminal via a wireless base station, the method being predetermined. A communication control method, wherein when the first condition is satisfied, control is performed to stop or limit the provision of a predetermined part of the plurality of types of services. 21. A communication control method in a service providing server, which is connected to a predetermined network and provides a predetermined service to a wireless terminal via the network and a predetermined wireless base station, the method comprising: When receiving the instructions of the above, control is performed to temporarily stop the provision of services or shift to the provision of limited services, and while the provision of services is suspended or the limited services are provided, external A communication control method, wherein when a second instruction is received from, control for restarting service provision or for returning to service provision without limitation is performed. 22. In a communication system for providing a service from a server to a wireless terminal, a communication control method in a wireless base station for connecting the wireless terminal in providing the service, wherein a first instruction is given from the outside. If received, control is performed to prohibit connection with all wireless terminals or limit the number of wireless terminals that can be connected, and receive a second instruction from the outside while connection is prohibited or connection is restricted. In the case of a communication control method, a control for canceling the connection prohibition or releasing the connection restriction is performed. 23. In a communication system for providing a service from a server to a plurality of types of wireless terminals, there is provided a communication control method in a wireless base station for connecting the wireless terminals to provide the service, wherein When the second instruction is received from the outside while the connection is prohibited, the control for prohibiting the connection with the wireless terminal of the predetermined type is performed.
A communication control method, characterized by performing control for canceling connection prohibition with a wireless terminal of a predetermined type. 24. A program for causing a computer to function as a control server used in a communication system, wherein one or a plurality of servers provide a plurality of types of services to a wireless terminal via a wireless base station, A function for performing a control for stopping or limiting the provision of a part of a predetermined type of service among the plurality of types of services when a predetermined first condition is satisfied; A program for causing a computer to realize a function for performing control for restarting or releasing the restriction of the provision of the service when the defined second condition is satisfied. 25. A program for causing a computer to function as a service providing server which is connected to a predetermined network and provides a predetermined service to a wireless terminal via the network and a predetermined wireless base station, When the first instruction is received from the outside, the function to perform the control for temporarily stopping the provision of the service or shifting to the limited service provision, and the temporarily stopping or the limitation of the service provision. When a second instruction is received from the outside during the provision of the service, the computer is made to realize the function of performing the control for restarting the provision of the service or returning to the provision of the service without restriction. Program for.