Wireless access system and control method therefor

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to a wireless access system that receives services of each service provider by using a wireless LAN or the like by a prepaid method.

【0002】

[Conventional technology]

In recent years, with the spread of broadband, wireless LAN has come to be widely used as a means of connecting personal computers to the Internet. In particular, wireless LANs that use radio waves are not subject to restrictions on where they can be used, unlike wired LANs, and unlike infrared LANs that use infrared rays, communication is less likely to be disturbed by obstacles, and the data transfer speed is high. The number of users is increasing due to the improvement and the decrease in prices.

【0003】

[Problems to be Solved by the Invention]

However, although the above-mentioned conventional wireless LAN system is not restricted in the place of use, the place where the access point is located is determined for each carrier (ISP: Internet service provider), and the access point is used. The usable range of about 100m as the center is limited. A conventional wireless LAN system cannot be used unless it contracts with each carrier, obtains an ID and password, and has an account as a user. For this reason, the conventional wireless LAN system has a drawback that it can be used only within a radius of 100 m, for example, centering on the place where the access point of the contracted carrier is located.

【0004】

Further, the conventional wireless LAN system has a limitation that an access point other than the access point installed by the contracted carrier cannot be used. That is, in the conventional wireless LAN system, the wireless group (managed by each carrier) to which the wireless LAN access point belongs is specified by the ESS-ID (Enhanced Service Set ID). Therefore, in the conventional wireless LAN system, communication is possible only between the mobile terminal (owned by the user) and the access point (managed by the carrier) for which the same ESS-ID is set, and access is made to the mobile terminal with a different ESS-ID. Communication with the point is not possible.

【0005】

For this reason, conventional wireless LAN systems can be used while moving (roaming) mobile terminals under access points with the same ESS-ID, but the ESS-IDs installed between carriers are different. Since roaming between access points cannot be performed, the installed access points are not effectively used, and the user must move to the location of the access point that has the same ESS-ID as the mobile terminal and use it. In addition to the limitation of the distance that can be used from, there is a drawback that the original convenience of being able to use it freely at the moving place is reduced.

【0006】

In addition, as mentioned above, the conventional wireless LAN system requires an account to be acquired in order to use the access point, and a contract is made with each carrier in advance, and the total amount of the monthly basic charge and usage charge is calculated. I have to pay. However, many users in the town who use wireless LAN have already subscribed to Internet connection services such as ADSL (Asymmetric Disital Subsucriber Line) at home. For this reason, in the conventional wireless LAN system, the total amount of the wireless LAN is paid even though the user does not use it frequently. Therefore, the total amount of the basic charge and the usage charge of the LAN system already contracted at home. By paying the double charge of, the charge burden becomes large and there is a problem that the increase of users is hindered.

【0007】

The present invention has been made against such a background, and provides a wireless access system that can be used by any access point regardless of the contracted carrier and can be easily used only for the fee used. It is in.

【0008】

[Means for solving problems]

The wireless access system of the present invention uses radio waves as a transmission medium and is transmitted via access points (for example, access points 21, 22, ..., 2n) installed by different carriers (for example, carriers A, B, C). , A wireless access system that connects a mobile terminal (for example, mobile terminal 1) to the Internet, extracts identification information from the transmission data of the user terminal input via the access point, and based on this identification information, A distribution server (for example, distribution server 5) that establishes a connection to the corresponding carrier and an ID number and password provided in each carrier and input from the mobile terminal authenticate the user and correspond to this ID number. It is characterized by including an authentication server (for example, authentication servers 10A, 10B, 10C) that controls the connection of the user terminal to the Internet based on the available frequency stored in the above and the connection time to the Internet. ..

【0009】

The wireless access system of the present invention is characterized in that the distribution server stores an available ID number and does not connect a line to a carrier when there is no corresponding ID number. The wireless access system of the present invention is characterized in that the distribution server has a correspondence table between the ID number and the carrier, and uses this ID number for the identification information. In the wireless access system of the present invention, the distribution server stores each access point corresponding to the installation location or carrier type, and a table showing the frequency counting time and correspondence per frequency from the access point to each carrier. It is characterized by that.

【0010】

In the wireless access system of the present invention, the authentication server subtracts the frequency from the usable frequency stored corresponding to this ID number every time the frequency counting time elapses, and the usable frequency becomes "0". The wireless access system according to claim 4, wherein the connection of the user terminal to the Internet is controlled by managing whether or not the user terminal is connected to the Internet. In the wireless access system of the present invention, the distribution server obtains the excess frequency in mutual use of access points between carriers based on the usage frequency, and notifies each carrier of the settlement amount calculated based on the excess frequency. It is characterized by doing.

【0011】

The wireless access control method of the present invention is a wireless access control method for a wireless access system that connects a mobile terminal to the Internet via access points installed by different carriers using radio waves as a transmission medium, and is via the access points. The carrier connection process of extracting the identification information from the transmission data of the user terminal and establishing the connection to the corresponding carrier based on the identification information, and the carrier connection process provided in each carrier and input from the mobile terminal. Connection control that authenticates the user with the ID number and password to be used and controls the connection of the user terminal to the Internet based on the available frequency stored corresponding to this ID number and the connection time to the Internet. It is characterized by having a process.

【0012】

The wireless access control method of the present invention is characterized in that it has a correspondence table between the ID number and the carrier in the carrier connection process, and uses this ID number for the identification information. In the carrier connection process, the wireless access control method of the present invention corresponds to each access point corresponding to the installation location or carrier type, and a table showing the frequency counting time per frequency from the access point to each carrier and the correspondence. The frequency counting time of the access point to be used is read out, and in the connection control process, the frequency is subtracted from the available frequency stored corresponding to the ID number every time the frequency counting time elapses, and the usable frequency is set to "0". It is characterized in that the connection of the user terminal to the Internet is controlled by managing whether or not the user terminal becomes.

【0013】

BEST MODE FOR CARRYING OUT THE INVENTION

In the wireless access system of the present invention, at the access points installed by each carrier, each carrier shares the access points (roaming at the access points installed by different carriers) regardless of the carriers installed, and the Internet is prepaid. It provides a service to connect to. That is, the user pays the usage fee for the predetermined unit time, for example, the usage time of the line for one hour in advance, obtains the ID number and password, and pays the fee using the access point installed by each carrier. Receive the Internet service of the previous carrier (also an Internet connection provider).

【0014】

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a wireless access system using a wireless LAN of a wireless communication method using radio waves as a transmission medium according to an embodiment of the present invention. In this figure, the user terminal 1 is a notebook computer or a mobile information terminal equipped with a browser, and has a wireless LAN function. When the user starts the utility on the user terminal 1, the access points (one or more of the access points 21 to 2n) that can access the screen are displayed, and the access point to be connected is selected and clicked. This connects to this selected access point, eg access point 22.

【0015】

Access points 21 to 2n are devices installed by carriers A, B, and C that relay between a wired LAN and a wireless LAN, and wirelessly constitute a LAN with a user terminal 1, respectively, routers 31, B, and 2n. It is connected to the distribution server 5 of the management company Z via ..., 3n and the router 4. The routers 31, ..., 3n and the router 4 connect the user terminal 1 to the distribution server 5. That is, in the present invention, the provider service of the carrier whose usage fee has been paid in advance can be received by the access point installed by any carrier.

【0016】

At this time, routers 31, ..., 3n and router 4 eliminate the need for user authentication when they are open to the public, set the accessing user account to Anonymous, and do not perform password authentication. In the set anonymous state, the mobile terminal 1 that has accessed the access point (any of access points 21 to 2n) is connected to the distribution server 5. Further, when the distribution server 5 and the mobile terminal 1 are connected, the access points 21 to 2n assign a local address to the mobile terminal 1 and output their own identification number to the distribution server 5. The distribution server 5 is an ID number group, which is a set of currently available ID numbers issued by carriers (telecommunications carriers) A, B, and C that provide provider services connected to the Internet I, and this ID. The carrier address of the connection destination carrier corresponding to each number is stored in a table format showing the correspondence relationship between the ID number and the carrier address (or telephone number).

【0017】

In addition, the distribution server 5 extracts an ID number from the transmission data transmitted from the mobile terminal 1 at the time of login, and whether or not the extracted ID number is included in the currently available ID number group stored internally. Is determined. Further, when the distribution server 5 detects that the input ID number is included in the currently available ID number group, the distribution server 5 sets the connection destination carrier, for example, the carrier A as the above ID number based on this ID number. Extract from the table showing the correspondence with the carrier address, and connect the connection between the authentication server 10A of this carrier A and the mobile terminal 1 to the router 7, information communication network (public communication line, dedicated communication line, VPN (virtual private network)). )) 8, Established via router 9A.

【0018】

That is, the distribution server 5 performs address translation between the local address set for the mobile terminal 1 and the carrier address extracted by the distribution server 5, so that any carrier can be selected from a plurality of carriers. Select and perform the process of establishing a connection between the selected authentication server and the mobile terminal 1. Here, the router 7 routes the mobile terminal 1 to, for example, the authentication server 10A of the carrier to which the connection is made, using the carrier address extracted by the distribution server 5.

【0019】

That is, routers 9A, 9B, 9C to each mobile terminal 1 have a connection configuration with a local address (only authentication servers 10A, 10B, 10C have the only IP address on the Internet). doing. Further, the authentication servers 10A, 10B, and 10C have an Internet connection function, have a terminal address (IP address) on the Internet, and connect to the Internet I of the mobile terminal 1 connected by the carrier address, respectively, on the router 11A. Performs the process of establishing via, 11B, 11C. Hereinafter, the authentication server in the carrier will be described using the authentication server 10A, but the other authentication servers 10B and 10C also perform the same processing as the authentication server 10A.

【0020】

Further, when the distribution server 5 detects that the input ID number is not included in the currently available ID number group, the distribution server 5 disconnects from the mobile terminal 1 that outputs this ID number. Then, the distribution server 5 identifies the accessing mobile terminal 1 by the MAC address or the like included in the transmission data transmitted by the mobile terminal 1, counts the number of accesses, and counts the number of accesses, a plurality of times, for example, three times. If an unusable ID number is sent, further access from this mobile terminal 1 is denied.

【0021】

The authentication server 10A performs a detection process of whether or not the input ID number and password are stored internally as usable. That is, the authentication server 10A determines whether or not the ID number entered in the ID number group is included, and if detected, the password stored corresponding to this ID number and the entered password. Is determined whether or not they match. If the authentication server 10A detects that the ID number entered in the internal ID number group exists and the password stored corresponding to this ID number is equal to the entered password, this ID is used. Connect the mobile terminal 1 that outputs the number and password to Internet I via the router 11A.

【0022】

Furthermore, the authentication server 10A stores the usable frequency corresponding to the available ID number, subtracts the usable frequency from this usable frequency, and each time the subtracted frequency is subtracted, the usable frequency becomes "0". It is judged whether or not it has become, and when the usable frequency becomes "0", the connection of the corresponding mobile terminal 1 with the Internet I is disconnected. At this time, the authentication server 10A counts the connection time set corresponding to the frequency based on the frequency rate at each access point transmitted from the distribution server 5, and the connection time set as the frequency counting time ( Every time the time corresponding to (connection time per frequency) elapses, 1 frequency is subtracted from the available frequency as the usage frequency.

【0023】

Here, the frequency counting time is set by the table configuration shown in FIG. 2, for example, when the connection time elapses 10 seconds, the connection time corresponding to the frequency to be subtracted from the available time is called 1 frequency. .. In FIG. 2, the frequency counting time is classified into a company rate, another company's rate, and a plurality of rate patterns, and the frequency counting time is shown for each access point identification number corresponding to each rate pattern. ing. The in-house rate is the frequency rate when the carrier on which the access point is installed and the connection destination are the same, and the other company's rate is the frequency rate when the connection destination is different from the carrier on which the access point is installed.

【0024】

The distribution server 5 stores the frequency counting time for each carrier for each access point, that is, for each identification number indicating each access point according to the table configuration shown in FIG. 2. For example, assuming that the access point 21 is installed by the carrier A, the frequency counting time at the access point 21 is the company rate "a =" when the ID issued by the carrier A is used as shown in FIG. 3 (a). 60 seconds / frequency ". On the other hand, as shown in FIG. 3 (b), the correction rate at the access point 21 is the rate of another company "b = 50 seconds / frequency" when the ID number issued by the carrier B is used.

【0025】

As described above, the frequency counting time is set to a different value for each carrier depending on the type of carrier, that is, whether the carrier to which the access point is connected is installed or another carrier. In addition, this correction rate is set to a different value depending on the location where each access point is installed, even among access points installed by the same carrier (corresponding to the frequency of use of access points and the difficulty of installation). Set the value).

【0026】

When the distribution server 5 establishes the connection of the mobile terminal 1 to each authentication server (10A, 10B, 10C), the distribution server 5 attaches the ID number and password together with the frequency counting time corresponding to either the company's own rate or the other company's rate. And output. For example, when the company rate "a = 60 seconds / frequency" is transmitted, the authentication server 10A subtracts the frequency from the available frequency corresponding to the ID number every 60 seconds. On the other hand, when the other company's rate "b = 50 seconds / frequency" is transmitted, the authentication server 10B subtracts the frequency from the available frequency corresponding to the ID number every 50 seconds.

【0027】

Then, the authentication server 10A deletes the ID number whose available frequency is "0" from the group of available ID numbers stored internally, and at the same time, the ID in the distribution server 5 is deleted from the distribution server 5. Request the deletion of this ID number from the number group. The distribution server 5 deletes the requested ID number from the internally stored ID number group based on the above-mentioned request for deleting the ID number from the authentication server 10A.

【0028】

In the management company Z, the ID issuing system 6 generates a primary ID number having a predetermined number of digits by a random number, and randomly assigns this primary ID number to a random number (CPU usage rate, disk usage rate, etc. at that time). Multiply a certain function to generate a quadratic ID number. In addition, the ID issuing system 6 determines whether or not a newly generated secondary ID number exists in the issued ID number table.

【0029】

Then, when the ID issuing system 6 detects that the same ID number as the secondary ID number does not exist in the issued ID number table, the ID issuing system 6 outputs this secondary ID number as an official ID number and also outputs this ID number. Is registered in the issued ID number table. On the other hand, when the ID number issuing system 6 detects that the same ID number as the secondary ID number exists in the issued ID number table, the ID number is generated again from the generation of the primary ID number by random numbers. Start.

【0030】

Next, an operation example of one embodiment will be described with reference to FIGS. 1, 2, 3, and 4. FIG. 4 is a conceptual diagram showing a flow of an operation example of the wireless access system shown in FIG. The following explanation is for purchasing a prepaid card (getting an ID number and password by scraping scratches) at a convenience store or a shop at a station, or the homepage of a carrier or the homepage of a sales company outsourced to the carrier. As a prepaid method including the case of purchasing and acquiring an ID number and password from the Internet, it is assumed that the fee will be paid in advance for the usage time of the wireless LAN.

【0031】

In step S1, each carrier (carriers A, B, C) requests the management company to generate a predetermined number of ID numbers corresponding to the number of prepaid cards to be sold. As a result, the management company Z generates the number of ID numbers requested by each carrier by the ID issuing system 6, and registers this ID number in the issued ID number table.

【0032】

Next, in step S2, the ID issuing system 6 transmits the generated ID number to the distribution server 5. Then, the distribution server 5 is newly generated in the ID number group corresponding to the address of the carrier to which the ID number is delivered, that is, in the table showing the relationship between the ID number and the address of each connection destination carrier. Register the ID number. That is, since the distribution server 5 is distributed in advance according to the carrier in which the ID number is used, the connection destination is based on the above table showing the relationship between the ID number and the carrier address (or telephone number) of each connection destination carrier. Will identify the carrier.

【0033】

Next, in step S3, the authentication servers 10A, B, and C are newly generated by the ID issuing system 6 of the management company Z in the storage area of the ID number group of the available ID numbers stored in each. Register the supplied ID number. At this time, in step S4, the authentication servers 10A, 10B, and 10C generate a password by a random number or the like corresponding to the above-mentioned registered ID number, and register the password in the ID number group corresponding to this ID number.

【0034】

Next, in step S5, each carrier A, B, and C asks a printing company to create a scratch-type prepaid card. Then, each carrier A, B, C sells at a convenience store or a shop at a station through a sales company that outsources this prepaid card. In addition, each carrier A, B, C sells the ID number on its own homepage or the homepage of the consigned sales company. The authentication servers 10A, 10B, and 10C store the usable frequency that can be connected according to the sales amount corresponding to each ID number.

【0035】

Next, in step S6, the user acquires the ID number issued by any of the carriers A, B, and C by using a prepaid card. For example, assuming that the user has purchased a prepaid card issued by carrier A, the following description will be given. At this time, the mobile terminal 1 possessed by this user is connected to the Internet I by the carrier A via the wireless LAN.

【0036】

Next, in step S7, the user attempts to connect the mobile terminal 1 to the Internet I in the vicinity of the access point 22 installed by the carrier A. Then, for example, when the user executes the software of the utility for connecting the mobile terminal 1 and the access point by wireless LAN on the mobile terminal 1, the mobile terminal 1 uses the access point 22 and the access point 22 uses the radio wave. It is recognized by the identification signal to be transmitted, and an icon indicating the access point 22 is displayed on the display screen. Then, when the user clicks the icon of the access point 22, the mobile terminal 1 is connected to the distribution server 5 via the access point 22, the router 32, and the router 4 based on the local address. At this time, the access point 22 transmits an identification number for identifying itself to the distribution server 5.

【0037】

As a result, the distribution server 5 transmits a login screen to the mobile terminal 1. Then, the user enters the ID number and password written on the prepaid card in the fields for entering the ID number and password on the login screen, respectively, and confirms the input. As a result, the distribution server 5 detects whether or not the input ID number exists in the table in which the ID number is indicated, which is stored internally. Then, when the distribution server 5 detects that the input ID number exists in the above table, it extracts the carrier address (or telephone number) of the carrier A corresponding to this ID number, and extracts this carrier address (or telephone number). ), The connection process for carrier A is performed.

【0038】

Next, in step S8, when the distribution server 5 establishes the connection of the mobile terminal 1 to the authentication server, it corresponds to the above-mentioned own rate or the rate of another company based on the identification number and ID number of the access point together with the ID number and password. Attach one of them and output it to the authentication server 10A. Here, since the access point 22 is installed by the carrier A and the ID number acquired by the user is sold by the carrier A, the distribution server 5 outputs its own rate to the authentication server 10A. As a result, the distribution server 5 establishes a connection with the mobile terminal 1 to the authentication server 10A of the carrier A.

【0039】

Next, in step S9, the authentication server 10A performs an authentication process of whether or not it is possible to connect to the Internet based on the input ID number and password. That is, the authentication server 10A detects the input ID number in the internal ID number group, and detects that the password stored corresponding to this ID number is equal to the input password.

【0040】

Next, in step S10, when the authentication server 10A detects that the input ID number is currently available, the router connects the mobile terminal 1 that outputs the ID number and password to the Internet I. Established via 11A. Then, the authentication server 10A monitors the communication of the mobile terminal 1 with respect to the Internet I. That is, the authentication server 10A subtracts the usage frequency (1 frequency) from the available frequency corresponding to the available ID number every time the connection time corresponding to the frequency counting time elapses.

【0041】

Then, the authentication server 10A determines whether or not the usable frequency is "0" each time the usable frequency is subtracted from the usable frequency, and when the usable frequency becomes "0", the response is made. Disconnect the mobile terminal 1 from Internet I. Then, the authentication server 10A deletes the ID number whose available frequency is "0" from the group of available ID numbers stored internally, and at the same time, the ID in the distribution server 5 is deleted from the distribution server 5. Request the deletion of this ID number from the number group. As a result, the distribution server 5 erases the requested ID number from the internally stored ID number group based on the above-mentioned request for erasing the ID number from the authentication server 10A, and connects with the mobile terminal 1. Disconnect.

【0042】

Next, the processing performed on each server regarding the calculation of the usage fee of the Internet connection service for the user and the settlement between the carriers for the shared use of the access point between the carriers will be described. The distribution server 5 collects log data indicating the connection destination carrier from the access point owned and the connection time (equivalent to the connection time to the Internet I) for each carrier, and roaming between the carriers. The connection cost is settled, that is, the above difference is settled.

【0043】

That is, the distribution server 5 stores the connection time to each carrier for each access point. For example, the distribution server 5 has the configuration of the table shown in FIG. 5A, and is used for each access point for each carrier using the access point 22 installed by the carrier A for connection to each carrier. The calculated frequencies are accumulated and stored as cumulative frequencies. As described above, the distribution server 5 is configured in the same manner as in FIG. 5 (a) by accumulating the frequencies used for connecting to each carrier for other access points to obtain the cumulative frequency. I remember it as a table of.

【0044】

In addition, the distribution server 5 accumulates the cumulative frequency of the access points installed for each carrier in order to settle the payment at the access points between the carriers. At this time, the distribution server 5 accumulates the cumulative frequencies of all the access points installed by each carrier (for example, carrier A) for each carrier based on the table of FIG. 5A for each carrier used. .. Then, the distribution server 5 obtains the total cumulative frequency of the frequencies that each carrier mutually uses the access points in all the access points owned by each carrier. That is, in the distribution server 5, carriers other than the carrier on which the access point is installed accumulates the cumulative frequency used by the other carriers for all the access points installed, and the total cumulative frequency for each other carrier is accumulated. Ask for.

【0045】

Next, the distribution server 5 detects which carrier has the larger total integrated frequency in mutual use between the carriers, and subtracts the smaller total integrated frequency from the larger one to obtain the difference in the total integrated frequency. That is, the excess frequency is obtained. For example, in the distribution server 5, the total cumulative frequency AB using the access point installed by the carrier B is "81700 frequencies", and the total cumulative frequency BA using the access point installed by the carrier A is the carrier B. If it is "20850 degrees", it is determined that "AB> BA", the total integrated frequency BA is subtracted from the total integrated frequency AB, and the carrier A installed the carrier B in the shared use of the access point. The excess frequency used in excess of the access point is calculated as "60850 frequency".

【0046】

As described above, the distribution server 5 obtains the excess frequency between each carrier and generates the settlement table shown in FIG. 5 (b) used when calculating the settlement amount for each carrier. The table in FIG. 5 (b) shows the relationship between the usage time difference between the carrier on which the access point is installed (column 20) and the carrier using this access point (column 30). For example, the positive value "60850 frequency" in column 100 indicates the excess frequency in which carrier A overused the access point installed by carrier B, and the negative "-60850 frequency" in column 200 indicates that carrier B is the carrier. For A, the frequency used extra in shared use is shown.

【0047】

Then, the distribution server 5 periodically (for example, every month) multiplies the excess frequency by the amount per frequency (for example, 100 yen / frequency) to obtain the settlement amount, and the extra used carrier is subjected to this. Notify carriers who have exceeded the frequency of mutual use due to shared use of access points so that they will pay the settlement amount (the amount corresponding to the frequency of excess in mutual use). At this time, the distribution server 5 obtains the settlement amount paid by the carrier A to the carrier B as "60850 x 100 = 6085000 (yen)". Then, the distribution server 5 sends a notification of the content of paying the settlement amount "6085000 (yen)" to the carrier B to the carrier A by e-mail or the like.

【0048】

As described above, the wireless access system of the present invention is the authentication server 10A of each carrier A, B, C that sells the ID number by the prepaid method without paying the basic fee and acquiring the account as in the conventional case. , 10B, 10C only subtract the used frequency from the usable frequency corresponding to each ID number, and the user pays the fee for the used frequency, which is one option of the wireless LAN usage pattern. As a result, the utilization efficiency for users who use the system only for a certain period or for a short period of time can be significantly improved.

【0049】

Further, in the wireless access system of the present invention, the distribution server 5 connects to the authentication servers 10A, 10B, 10C of the carriers A, B, and C who purchased the ID number corresponding to the ID number input by the user. It is possible to roam between access points 21, 22, ..., 2n installed by different carriers A, B, C, and a place where the mobile terminal 1 can connect to the Internet I. Will be greatly increased, and the convenience of the wireless access system will be greatly improved.

【0050】

Further, the wireless access system of the present invention is a distribution server so that a carrier having many access points does not have an unfair recovery of charges for capital investment for shared use with a carrier having few access points. This correction rate is appropriate because the difference is paid for the time when the access point was used in excess of mutual use by other carriers, depending on the correction rate stored in 5, that is, the own rate and the rate of other companies. By making it possible, it is possible to eliminate unfairness in the size of capital investment.

【0051】

Although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range that does not deviate from the gist of the present invention. Is also included in the present invention. For example, the wireless access system of one embodiment described above uses wireless LAN as a wireless communication method using radio waves as a transmission medium, but uses other radio waves such as Bluetooth (Bluetooth: registered trademark) as a transmission medium. A wireless communication method may be used.

【0052】

[Effect of the invention]

According to the wireless access system of the present invention, each authentication server of each carrier that sells the ID number by the prepaid method can be used corresponding to each ID number without paying the basic fee and acquiring an account as in the conventional case. Only the frequency (charge) for the time used is subtracted from the frequency, and the user pays only the frequency used, and it is used only for a certain period or for a short time as one option of the wireless LAN usage pattern. It is possible to greatly improve the utilization efficiency for users who do not.

【0053】

Further, according to the wireless access system of the present invention, since the distribution server controls the connection of the carrier that purchased the ID number to each authentication server according to the ID number input by the user, the different carriers Roaming between each installed access point is possible, the number of places where a mobile terminal can connect to Internet I is greatly increased, and the convenience of the wireless access system is greatly improved.

[Simple explanation of drawings]

[Figure 1]

It is a block diagram which shows the structure of the wireless access system by one Embodiment of this invention.

[Figure 2]

It is a conceptual diagram which shows the structure of the table stored in the distribution server 5 of FIG.

[Fig. 3]

It is a conceptual diagram explaining the connection relationship between the carrier which sells ID number, and the mobile terminal 1 which uses the purchased ID number.

[Fig. 4]

It is a conceptual diagram which shows the flow of the operation example of the wireless access system shown in FIG.

[Fig. 5]

It is a conceptual diagram which shows the structure of the table used when calculating the difference of mutual use in roaming between access points installed by different carriers.

[Explanation of symbols]

1 User terminal 21,22,2n access point 31,32,3n, 4,7,9A, 9B, 9C router 5 Sorting server 6 ID issuance system 8 Information and communication network 10A, 10B, 10C authentication server Z management company I internet