JP4201132B2 - Terminal address management device, server device, terminal address management method, and terminal address management program - Google Patents

Description

  The present invention is a technology for managing context information notified from a third context output device and an address (terminal address) of a mobile terminal corresponding to the context information in a push-type delivery service based on context awareness. Terminal address management device, server device, terminal address management method, and terminal address management that can identify the address of the mobile terminal corresponding to the context information even when the address of the mobile terminal changes Regarding the program.

  The context is information related to a mobile terminal having a communication information processing function such as a mobile phone or a notebook personal computer, or a user of the mobile terminal. For example, location information, user status (meeting, being present, All kinds of information, such as during meals), hobbies and preferences, access history, the type and network type of the mobile terminal used, and sensing information such as temperature, ultraviolet rays, weather, and time that can be acquired from the sensor device.

The context-aware service is to select and provide an appropriate service to the corresponding user or mobile terminal based on the context (Non-patent Document 1).
As an example of a context-aware service, push-type content distribution can be considered. For example, in accordance with context information indicating the location and status of a mobile terminal, the advertisement information related to the location is push-type distributed to the mobile terminal.

  In order to realize a context-aware service, it is necessary to identify which mobile terminal the acquired context information belongs to. In general, a logical ID (Identification) that is executed by application software that handles a context and is used to identify a mobile terminal is statically defined. In order to identify whether or not the terminal is the one associated with the logical ID.

  Specifically, a logical ID is added to a data packet that notifies context information. In the case of the push type information distribution service, in order for the network layer communication protocol to transmit data packets to the mobile terminal, an address (corresponding to an IP address in the Internet) and context information are identified. One-to-one correspondence. Therefore, it is necessary to associate the terminal address and the logical ID on a one-to-one basis. As a method for managing the association between the terminal address and the logical ID, a method in which a management table is provided in the server and the terminal address and the logical ID are associated with the management table on a one-to-one basis is considered.

However, in the method using this management table, the addition and deletion of management information becomes complicated. Also, in a mobile terminal that assumes a mobile environment, there may be an address change during service, but the management table cannot be updated unless the server is notified of the change contents of the terminal address in some way.
Therefore, as a technique without such a defect, for example, there is a mobile IP technique described in Non-Patent Document 2. This mobile IP technology hides it by a network layer {IP (Internet Protocol)} protocol process even if the address of a mobile terminal is changed, so that the same address can be seen by a higher-level application.

FIG. 6 shows the configuration of a conventional terminal address management system based on this mobile IP technology.
The system shown in FIG. 6 includes a plurality of routers 12-1 to 12-3 connected to the IP network 10, a context output device 14 connected to the router 12-1, and a wireless (not shown) in the router 12-1. A mobile terminal 16 connected wirelessly via a base station, a wireless receiver 18 such as a wireless LAN terminal or IC tag receiver connected to the context output device 14, and a server 20 connected to the router 12-2 And a home agent device 22 connected to the router 12-3.

In addition to the geographically correct temporary care-of address in the destination subnet that the mobile terminal 16 acquires at the destination, the mobile IP technology is based on the home agent device 22 of the home network to which the mobile terminal 16 was originally connected. This is a mechanism for assigning a fixed address as an assigned home address and routing to the mobile terminal 16 that moves using this address.
Hidefumi Yamaoka, “Research Trends of Applications Using Context Awareness”, Information Processing Society of Japan, pp. 265-269, Vol. 44, NO. 03, 2003 Ezaki Hiroshi, “IPv6 Textbook”, IDG Japan, pp. 84-85

However, in the terminal address management system using the mobile IP technology described in Non-Patent Document 2, the mobility of the mobile terminal is realized without changing the address registered in the management table of the server 20 by the mobile IP. Although it is possible, it is necessary to introduce a device and a protocol necessary for realizing Mobile IP separately. For this reason, there exists a problem that an installation cost and the management cost of operation become high.
The present invention has been made in view of such problems, and can manage the terminal address even when the terminal address is changed due to the movement of the mobile terminal, and the equipment cost and It is an object of the present invention to provide a terminal address management device, a server device, a terminal address management method, and a terminal address management program that can be realized with low operation management costs.

In order to achieve the above object, a terminal address management apparatus according to claim 1 of the present invention uniquely identifies a mobile terminal corresponding to context information that is information related to a mobile terminal and a user of the mobile terminal. First storage means for storing a logical ID and a terminal address assigned to the mobile terminal in a one-to-one correspondence; a second storage means for storing an address of an output device that transmits context information; Transmission / reception means for transmitting / receiving a data packet in which a logical ID is stored together with context information, a transmission source address of the data packet received by the transmission / reception means, and the same logical ID as the data packet in the first storage means When the first comparison means for comparing the associated terminal address and the comparison result by the first comparison means do not match The second comparison means for comparing the transmission source address and the address of the output device stored in the second storage means, and when the comparison result by the second comparison means does not match, the first comparison When the comparison result by the first comparing means matches the means for replacing the terminal address associated with the same logical ID as the data packet in the storage means with the source address of the data packet received by the transmitting / receiving means The terminal address assigned to the mobile terminal is determined to be the source address, and if the comparison result by the second comparing means matches, the terminal address assigned to the mobile terminal is Management means for determining and managing the address associated with the logical ID in the first storage means .

  According to this configuration, even if a different terminal address is assigned due to movement of the mobile terminal, the changed terminal address can be managed. In addition, as a basic configuration means, a device that manages terminal addresses with elements that do not incur equipment costs and operation management costs, such as data transmission / reception means and storage means, and management means that performs processing such as data collation / update, etc. Is possible.

The server device according to claim 2 of the present invention receives context information that is information about a mobile terminal and a user of the mobile terminal, and provides a communication service based on the received context information to the corresponding mobile terminal. A first storage unit that stores a logical ID for uniquely identifying a mobile terminal that transmits context information and a terminal address assigned to the mobile terminal in a one-to-one correspondence with each other The second storage means for storing the address of the output device that transmits the context information, and when the data packet in which the logical ID is stored together with the context information is received, the source address of the data packet, first comparing the terminal address associated with the same logical ID and the data packet in the first storage means A comparison means and a second comparison means for comparing the transmission source address with the address of the output device stored in the second storage means when the comparison result by the first comparison means does not match; If the comparison result by the second comparison means does not match, the terminal address associated with the same logical ID as the data packet in the first storage means is used as the source address of the data packet received by the transmission / reception means If the comparison result by the first comparison means and the comparison result by the first comparison means match, it is determined that the terminal address assigned to the mobile terminal is the source address, and the comparison result by the second comparison means address but the terminal address assigned to the mobile terminal if the match is associated with the logical ID in the first storage unit Is characterized by comprising a management unit for managing it is determined that there.

  According to this configuration, even if a terminal address different from the current one is assigned as the mobile terminal moves in the server device, the changed terminal address can be managed. In addition, as a basic configuration means, a function for managing terminal addresses with elements that do not incur equipment costs and operation management costs, such as data transmission / reception means and storage means, and management means that performs processing such as data comparison / update, etc. Therefore, the server device can be provided with an address management function at a low equipment cost and operation management cost.

A terminal address management method according to claim 3 of the present invention includes a logical ID for uniquely identifying a mobile terminal and a mobile terminal that transmits context information that is information related to a user of the mobile terminal and the mobile terminal. The first step of storing the terminal address assigned to the terminal in a one-to-one correspondence, the second step of storing the address of the output device that transmits the context information, and the logical ID together with the context information a third step of receiving the stored data packets, retrieves the same logical ID and logical ID of the received data packets in the third step from among the logical ID stored in said first step, a terminal address corresponding to the retrieved logical ID, a fourth step of comparing the source address of the data packet, the If the comparison result in step 4 does not match, the fifth step for comparing the source address and the address of the output device stored in the second storage means, and the comparison result in the fifth step are If not, the sixth step replaces the terminal address retrieved in the fourth step with the source address of the data packet received in the third step, and the comparison in the fourth step If the results match, it is determined that the terminal address assigned to the mobile terminal is the address stored in association with the logical ID in the first step, and the comparison result in the fifth step is but a terminal address assigned to the mobile terminal in the case of coincidence, correspondence to the logical ID in the first step It is characterized in that it is determined that the stored address is.

  According to this method, the changed terminal address can be managed even if a different terminal address is assigned due to movement of the mobile terminal. In addition, as a basic configuration means, a device that manages terminal addresses with elements that do not incur equipment costs and operation management costs, such as data transmission / reception means and storage means, and management means that performs processing such as data collation / update, etc. Is possible.

According to a fourth aspect of the present invention, there is provided a terminal address management program comprising: a logical ID for uniquely identifying a mobile terminal that transmits context information, which is information relating to a mobile terminal and a user of the mobile terminal, to a computer; A first process for storing one-to-one correspondence with a terminal address assigned to the mobile terminal, a second process for storing an address of an output device that transmits context information, and context information from the third processing and the third processing logic ID stored the same logical ID and logical ID of the received data packets in the first processing in receiving a data packet a logical ID is stored Locate and a terminal address corresponding to the retrieved logical ID, a fourth processing for comparing the source address of the data packet, the second In the case where the comparison result in the second processing is inconsistent, the fifth processing for comparing the transmission source address with the output device address stored in the second storage means and the comparison result in the fifth processing are inconsistent If so, the comparison result in the fourth process matches the sixth process in which the terminal address searched in the fourth process is replaced with the source address of the data packet received in the third process. In this case, it is determined that the terminal address assigned to the mobile terminal is an address stored in association with the logical ID in the first process, and the comparison result in the fifth process matches. seventh in the case of the terminal address assigned to the mobile terminal determines that an address stored in association with the logical ID in the first process It is characterized in that to execute the process.

  According to this program processing, even if a different terminal address is assigned due to movement of the mobile terminal, the changed terminal address can be managed. Further, since the program is stored in a storage means such as a magnetic storage means, an optical storage means, a semiconductor storage means, etc., and this can be used in a computer device, a server device, etc., there is no equipment cost and operation management cost. It is possible to configure a device for managing terminal addresses.

  As described above, according to the present invention, the terminal address can be managed even when the terminal address is changed due to the movement of the mobile terminal, and the equipment cost and the operation management cost are kept low when realizing this management. Can be realized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment)
FIG. 1 is a diagram showing a configuration of a terminal address management system according to an embodiment of the present invention.
The terminal address management system shown in FIG. 1 is illustrated in a plurality of routers 32-1 and 32-2 connected to the IP network 30, a context output device 34 connected to the router 32-1, and a router 32-1. A mobile terminal 36 wirelessly connected through a wireless base station, a wireless receiver 38 such as a wireless LAN terminal or IC tag receiver connected to the context output device 34, and a router 32-2. A server 40 and a terminal address management device 42 which is a characteristic element of the present embodiment are provided.

However, the terminal address management device 42 can also be provided inside the server 40. The radio receiver 38 receives context information and transmits it to the context output device 34.
As shown in FIG. 2, the terminal address management device 42 includes a packet transmission / reception unit 42a, a terminal address management unit 42b, a management table 42c, and an address registration unit 42d.

The packet transmitting / receiving unit 42a receives the data packet P from the mobile terminal 36 or the context output device 34 via the IP network 30, and transmits a logical ID, context information, and a terminal address to the server 40. It is.
FIG. 3 shows the configuration of the data packet P described above. The data packet P includes an IP header H1, a TCP header H2, and a data part D. The IP header H1 includes a transmission source IP address (also simply referred to as a transmission source address) together with a version (version), a header length (Header length), and the like. Can know the address of the sender. The data part D includes context information, a terminal ID (logical ID), and an HTTP header.

The management table 42c stores and manages logical IDs and terminal addresses in a one-to-one correspondence.
The address registration unit 42d registers the address of the context output device 34.
The terminal address management unit 42b searches the management table 42c for the same logical ID as the logical ID of the data packet P received by the packet transmitting / receiving unit 42a, and is associated with the searched logical ID on a one-to-one basis. It is checked whether the received terminal address matches the source address of the data packet P.

If they match, the data packet P from the mobile terminal 36 is determined, and the logical ID based on the logical ID, context information, and source address of the received data packet P is sent to the server 40 via the packet transmitting / receiving unit 42a. , Send context information, terminal address.
If they do not match, it is checked whether or not the source address of the data packet P matches the address of the context output device 34 registered in the address registration unit 42d. If they do not match, the address of the mobile terminal 36 is Judge that it has been changed. At this time, the terminal address stored in the management table 42c is replaced with the source address of the data packet P and updated, and the logical ID, context information, and source address of the data packet P are transmitted to the server 40. To do.

If it matches the address of the context output device 34, it is determined that the data packet P is transmitted from the context output device 34, and the logical ID and context information of the data packet P and the terminal of the management table 42c are sent to the server 40. An address (terminal address checked above) is transmitted.
Further, the operation of the terminal address management process by the terminal address management device 42 will be described with reference to the flowchart shown in FIG.

  The terminal address management device 42 receives the data packet P from the packet transmitting / receiving unit 42a (F1), and extracts context information and logical ID included in the data packet P (F2). Next, a terminal address associated with the same logical ID as the extracted logical ID is searched from the management table 42c, and whether or not this terminal address matches the transmission source address of the previously received data packet P is determined. Compare (F3). If they match, it is determined that the address of the mobile terminal 36 is the source address of the data packet P (F4).

If they do not match, the transmission source address of the received data packet P is compared with the address registered in the address registration unit 42d (F5).
If the comparison result does not match, the terminal address stored in the management table 42c is updated with the source address of the data packet P (F6), and this terminal address is the source address of the data packet P. (F7).
If the determination result in step F5 matches, the address of the mobile terminal 36 is
The address is associated with the logical ID in the management table 42c (F8).
Thereafter, the logical ID, context information, and terminal address are transmitted to the server 40 (F9).

Next, data packet transmission / reception processing in the terminal address management system will be described with reference to the sequence diagram shown in FIG.
First, the mobile terminal 36 extracts context information (S1), and transmits a data packet P including the context information and logical ID to the terminal address management device 42 (S2). The terminal address management device 42 determines the terminal address for the data packet P and recognizes that the data packet P is transmitted from the mobile terminal 36 (S3). The terminal address determination process in step S3 is performed as described above with reference to FIG.

  Then, the terminal address management device 42 transmits the context information and logical ID included in the data packet P, and the logical ID, context information, and terminal address acquired based on the transmission source address to the server 40 (S4). . Thereafter, the server 40 provides a service to the mobile terminal 36 based on the transmitted logical ID, context information, and terminal address (S5).

  Similarly, the context output device 34 also extracts context information (S6), and transmits the data packet P including the context information and the logical ID to the terminal address management device 42 (S7). The terminal address management device 42 determines the terminal address for the data packet P and recognizes that the data packet P has been transmitted from the context output device 34 (S8). The terminal address determination process in step S8 is performed as described above with reference to FIG.

  Then, the terminal address management device 42 sends a logical ID to the server 40 based on the context information and logical ID included in the data packet P and the terminal address (address of the mobile terminal 36) already stored. The context information and the terminal address are transmitted (S9). Thereafter, the server 40 provides a service to the mobile terminal 36 based on the transmitted logical ID, context information, and terminal address (S10).

  Thus, according to the terminal address management system of the present embodiment, in the terminal address management device 42, the management table 42c has a logical ID for uniquely identifying the mobile terminal 36 that transmits the context information, The terminal address assigned to the mobile terminal 36 is stored in one-to-one correspondence, and the address of the context output device 34 that transmits the context information is stored in the address registration unit 42d. The packet transmitting / receiving unit 42a receives the data packet storing the ID together with the context information.

  In the terminal address management unit 42b, if the transmission source address of the received data packet does not match the address of the context output device 34 stored in the address registration unit 42d, the same logical ID as that of the data packet is set in the management table 42c. The associated terminal address is replaced with a source address, and if the source address matches the terminal address, address management is performed using the terminal address as it is.

Accordingly, even if a different terminal address is assigned due to movement of the mobile terminal 36, the changed terminal address can be managed. In addition, as a basic configuration means, the terminal address is set by an element that does not incur equipment costs and operation management costs such as a data packet transmission / reception unit 42a and a storage unit and a terminal address management unit 42b that performs processing such as data collation / update. It is possible to configure a device to be managed.
Therefore, even when the terminal address is changed due to the movement of the mobile terminal 36, the terminal address can be managed, and when realizing this management, the equipment cost and the operation management cost can be kept low.

Such an effect can be similarly obtained even when the server 40 is provided with the same function as the terminal address management device 42.
Further, even if the computer creates a program capable of executing terminal address management processing by the first to fifth processing described below and uses it in the server 40 or the like, the same effect as described above can be obtained. Is possible.
In the first process, a logical ID for uniquely identifying the mobile terminal 36 and the mobile terminal 36 that transmits context information, which is information related to the user of the mobile terminal 36, and the mobile terminal 36 are assigned. The terminal address is stored in a one-to-one correspondence.

In the second process, the address of the context output device 34 that transmits the context information is stored.
In the third process, a data packet in which a logical ID is stored together with context information is received.
In the fourth process, a logical ID that is the same as the logical ID of the data packet received in the third process is searched from the logical IDs stored in the first process, and is associated with the searched logical ID. The terminal address and the transmission source address of the data packet are compared, and if they match, the terminal address is used.
In the fifth process, when the comparison result in the fourth process does not match, the transmission source address is further compared with the address of the context output device 34 stored in the address registration unit 42d. The terminal address retrieved in the process is replaced with the transmission source address of the data packet received in the third process.

It is a figure which shows the structure of the terminal address management system which concerns on embodiment of this invention. It is a figure which shows the structure of the terminal address management apparatus in the terminal address management system which concerns on the said embodiment. It is a figure which shows the structure of the data packet transmitted with the terminal address management system which concerns on the said embodiment. It is a flowchart for demonstrating operation | movement of the terminal address management process by the said terminal address management apparatus. It is a sequence diagram for demonstrating the operation | movement of the process of data packet transmission / reception in the terminal address management system which concerns on the said embodiment. It is a figure which shows the structure of the conventional terminal address management system.

Explanation of symbols

10, 30 IP network 12-1, 12-2, 12-3, 32-1, 32-2 Router 14, 34 Context output device 16, 36 Mobile terminal 18, 38 Wireless receiver 20, 40 Server 42 Terminal address Management device 42a Packet transmission / reception unit 42b Terminal address management unit 42c Management table 42d Address registration unit P Data packet H1 IP header H2 TCP header D Data unit

Claims (4)

The logical ID for uniquely identifying the mobile terminal corresponding to the mobile terminal and the context information that is information related to the user of the mobile terminal is associated with the terminal address assigned to the mobile terminal on a one-to-one basis. First storage means for storing
Second storage means for storing an address of an output device that transmits the context information;
A transmission / reception means for transmitting / receiving a data packet in which a logical ID is stored together with context information;
First comparison means for comparing a transmission source address of the data packet received by the transmission / reception means and a terminal address associated with the same logical ID as the data packet in the first storage means;
Second comparison means for comparing the transmission source address with the address of the output device stored in the second storage means when the comparison result by the first comparison means does not match;
If the result of the comparison by the second comparison means does not match, the terminal address associated with the same logical ID as the data packet in the first storage means is transmitted to the data packet received by the transmission / reception means. Means to replace the original address,
If the comparison result by the first comparison means is coincident, it is determined that the terminal address assigned to the mobile terminal is the source address;
If the comparison result by the second comparison means is coincident, the terminal address assigned to the mobile terminal is determined to be an address associated with a logical ID in the first storage means and managed. A terminal address management device comprising: management means. In a server device that receives context information that is information about a mobile terminal and a user of the mobile terminal, and provides a communication service based on the received context information to the mobile terminal,
First storage means for storing a logical ID for uniquely identifying a mobile terminal that transmits context information and a terminal address assigned to the mobile terminal in a one-to-one correspondence;
Second storage means for storing an address of an output device that transmits the context information;
When a data packet in which a logical ID is stored together with context information is received, a transmission source address of the data packet and a terminal address associated with the same logical ID as the data packet in the first storage means A first comparison means for comparing
Second comparison means for comparing the transmission source address with the address of the output device stored in the second storage means when the comparison result by the first comparison means does not match;
If the comparison result by the second comparison means does not match, the terminal address associated with the same logical ID as the data packet in the first storage means is the source of the data packet received by the transmission / reception means Means to replace it with an address,
If the comparison result by the first comparison means is coincident, it is determined that the terminal address assigned to the mobile terminal is the source address;
If the comparison result by the second comparison means is coincident, the terminal address assigned to the mobile terminal is determined to be an address associated with a logical ID in the first storage means and managed. A server device comprising: management means. A logical ID for uniquely identifying a mobile terminal and a mobile terminal that transmits context information, which is information related to the user of the mobile terminal, and a terminal address assigned to the mobile terminal are associated on a one-to-one basis. A first step of storing
A second step of storing an address of an output device that transmits the context information;
A third step of receiving a data packet in which a logical ID is stored together with context information;
The logical ID that is the same as the logical ID of the data packet received in the third step is searched from the logical ID stored in the first step, and the terminal address associated with the searched logical ID is A fourth step of comparing the source address of the data packet;
A fifth step of comparing the transmission source address with the address of the output device stored in the second storage means if the comparison result in the fourth step does not match;
If the comparison result in the fifth step does not match, the sixth step replaces the terminal address searched in the fourth step with the source address of the data packet received in the third step; Including
If the comparison result in the fourth step is coincident, it is determined that the terminal address assigned to the mobile terminal is the address stored in association with the logical ID in the first step; When the comparison result in the fifth step is coincident, it is determined that the terminal address assigned to the mobile terminal is the address stored in association with the logical ID in the first step. A terminal address management method. On the computer,
A logical ID for uniquely identifying a mobile terminal and a mobile terminal that transmits context information, which is information related to the user of the mobile terminal, and a terminal address assigned to the mobile terminal are associated on a one-to-one basis. First processing to be stored,
A second process for storing an address of an output device that transmits the context information;
A third process for receiving a data packet in which a logical ID is stored together with context information;
A logical ID that is the same as the logical ID of the data packet received in the third process is searched from the logical IDs stored in the first process, and the terminal address associated with the searched logical ID is A fourth process for comparing the source address of the data packet;
A fifth process for further comparing the source address and the output device address stored in the second storage means if the comparison result in the fourth process does not match;
A sixth process for replacing the terminal address retrieved in the fourth process with the source address of the data packet received in the third process, if the comparison result in the fifth process is inconsistent;
If the comparison result in the fourth process is coincident, the terminal address assigned to the mobile terminal is determined to be the address stored in association with the logical ID in the first process; When the comparison result in the fifth process is the same, the terminal address assigned to the mobile terminal is determined to be the address stored in association with the logical ID in the first process. A terminal address management program characterized by causing processing to be executed.

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