JP2004072265A - Function distribution system, function distribution method, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a function distribution system capable of distributingly arranging one function (e.g. an AP function) on a mobile terminal side and a center side with an excellent efficiency. <P>SOLUTION: An agent platform AP is characterized in including: a plurality of center side partial platforms 2 being divisions of the AP function used in combination with mobile terminal side partial platforms 7 having the divided AP function; and configuration agents 12 for selecting an optimum partial platform 2 to be combined with the partial platform 7 of the mobile terminal side among a plurality of the center side partial platforms 2 on the basis of a load condition of the center side partial platforms 2 and a condition of an area wherein the mobile terminal exists. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a function distribution system and a load distribution method, and a computer program for implementing the function distribution system using a computer.
[0002]
[Prior art]
In FIPA (Foundation for Intelligent Physical Agents), agent communication is standardized, and a reference model of an agent platform (AP) is defined as a software execution environment of an agent which is a kind of an autonomous action type program. The AP is composed of an ACC (Agent Communication Channel), an AMS (Agent Management System), and a DF (Directory Facility). The ACC is a message router for exchanging messages between agents in the AP or between agents in the AP and agents outside the AP. All messages are transferred via ACC. AMS manages the state of the agent in the AP. For example, it is possible to search for an agent identifier of an agent existing in the AP. The DF is a directory server that enables searching for services provided by agents.
[0003]
As a conventional load distribution method, for example, a method described in JP-A-2001-92766 is known. According to the method described in this publication, in a client-server system including a client and a plurality of servers, load distribution of servers is performed according to the load state of each server. Further, Japanese Patent Application Laid-Open No. 2002-99211 describes a public key certificate issuance request processing system in which a registration authority is formed in a geographical hierarchical configuration and load is distributed based on locality.
[0004]
[Problems to be solved by the invention]
In recent years, it has been studied to provide the above-mentioned agent in a mobile terminal such as a mobile phone to perform agent communication. In order for the agent on the mobile terminal to communicate, the AP needs to be built in the mobile terminal. However, it is difficult for a mobile terminal to realize all of the AP functions because of a lack of processing capability and the like, and there is a demand for efficiently distributing the AP functions between the mobile terminal and the center-side device. Further, when the AP function is distributed and arranged on the mobile terminal side and the center side, there is a possibility that access from the mobile terminal to one partial platform disposed on the center side may be concentrated, and it is important to perform this load distribution. Will be an issue. The partial platform is a part of the function of the agent platform.
[0005]
However, in the above-described conventional load distribution method, for example, in a method in which server load distribution is performed in accordance with a load state of each server, a server in a distant area may be accessed. The amount increases. Further, in the method of distributing the load based on the regionality, there is a possibility that the load may be unevenly distributed among the regions.
[0006]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a function distribution system in which one function (for example, an AP function) can be efficiently distributed and arranged between a mobile terminal and a center. Is to do.
[0007]
Another object of the present invention is to provide a function distribution system and a load distribution method capable of performing appropriate load distribution.
[0008]
Another object of the present invention is to provide a computer program for realizing the function distribution system using a computer.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the function distribution system according to claim 1 is a function distribution system in which a specific function is distributed and arranged, and is combined with the function of a mobile terminal provided with the specific function divided. A plurality of center-side devices provided with divided portions of the specific function used, based on a load condition of the center-side device and an area condition where the mobile terminal exists, from among the functions of the plurality of center-side devices. And load balancing control means for selecting an optimum one to be combined with the function of the mobile terminal.
[0010]
The function distribution system according to claim 2, wherein the load distribution control means selects a function of the mobile terminal and a function of the center apparatus having a connection history.
[0011]
In the function distribution system according to the third aspect, the load distribution control means selects a function of the mobile terminal and a function of the center-side device connected immediately before.
[0012]
In the function distribution system according to the fourth aspect, the specific function is an agent platform.
[0013]
In order to solve the above-mentioned problem, a load distribution method according to claim 5, wherein a plurality of centers having divided parts of the specific function used in combination with the function of a mobile terminal having the specific function divided A load distribution method in a function distribution system including a device, wherein the mobile device is configured to perform, based on a load condition of the center device and an area condition in which the mobile terminal exists, the mobile device from among the functions of the plurality of center devices. It is characterized by selecting the best one to combine with the function of the terminal.
[0014]
In order to solve the above-mentioned problem, a computer program according to claim 6, wherein a plurality of center-side devices including a divided part of the specific function used in combination with the function of a mobile terminal having the specific function divided Is a computer program for performing a load distribution process in a function distribution system comprising: a function of the plurality of center-side devices based on a load condition of the center-side device and a regional condition in which the mobile terminal exists. It is characterized by causing a computer to execute a process of selecting an optimum one to be combined with the function of the mobile terminal from among them.
As a result, the above-described function distribution system can be realized using a computer.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a function distribution system according to an embodiment of the present invention. In FIG. 1, the function distribution system according to the present embodiment forms an agent platform (AP) 1.
[0016]
The agent platform 1 includes a plurality of partial platforms 2 on the center side, a plurality of partial platforms 7 on the mobile terminal side, a plurality of constituent agents (Agents) 12, and an agent management database 13. The configuration agent 12 is provided on the partial platform 2 on the center side.
[0017]
In the agent platform 1 of the present embodiment, the agent platform functions are distributed and arranged on the mobile terminal side and the center side. The partial platform 2 on the center side has an agent communication channel (ACC) 3, a directory facilitator (DF) 4, and an agent management system (AMS) 5 whose functions are divided. The partial platform 7 on the mobile terminal side has an ACC 8, an AMS 9, and a DF 10 whose functions are divided.
[0018]
The mobile terminal side partial platform 7 realizes one agent platform function by operating in cooperation with any of the center side partial platforms 2. The partial platform 2 on the center side can operate in cooperation with a plurality of partial platforms 7.
The partial platform 2 on the center side is provided corresponding to each district (Tokyo, Nagoya, Osaka, etc.).
[0019]
The general agents 6 and 11 are provided in the partial platform 2 on the center side or the partial platform 7 on the mobile terminal side. The general agents 6 and 11 are autonomous action type programs that can be executed on the partial platform 2 or the partial platform 7. The general agent 6 existing in the partial platform 2 provides a service by operating in cooperation with other agents, software, and the like existing in the partial platform 2. Similarly, the general agent 11 existing in the partial platform 7 provides a service by operating in cooperation with other agents, software, and the like existing in the partial platform 7. Further, the general agents 6 and 11 can operate in cooperation with each other.
[0020]
The ACC3, DF4, AMS5, ACC8, AMS9, and DF10 are each one of agents (autonomous action type programs).
[0021]
The agent information management database 13 stores the state of the agent in the agent platform 1 and information for centrally managing services provided by the agent.
[0022]
The agent platform 1 is a communication base for enabling message communication by specifying an agent identifier of a communication partner with respect to the agents 3 to 6, 8 to 11 and 12 that perform autonomous communication asynchronously. . Further, it also has a message communication function between the agents 3 to 6, 8 to 11 and 12 included in the agent platform 1 and the agents included in the external agent platform 14.
[0023]
In the agent platform 1, communication between the mobile terminal and the center is performed via a wireless communication network such as a mobile phone network. The external agent platform 14 communicates with the agent platform 1 via the Internet or the like. The agent platform 1 and the external agent platform 14 perform communication in a predetermined agent communication language (for example, FIPA ACL). The communication between the mobile terminal side and the center side of the agent platform 1 is not limited to a wireless communication network, but can be performed via a wired communication network such as a fixed telephone network, the Internet, or the like. For example, when a PDA (Personal Digital Assistants: personal information equipment) is used as a mobile terminal, it may be connected to a mobile phone and connected to a center-side device via a wireless telephone line, or may be connected to a center via a fixed telephone wired telephone line. It may be connected to the center device, or may be connected to the Internet via a LAN or the like and connected to the center device.
[0024]
The partial platform 2 is realized by executing a program for realizing the function by a CPU in the center-side device. The partial platform 7 is realized by executing a program for realizing the function by a CPU in the mobile terminal.
[0025]
The partial platform 2 on the center side is one in the agent platform 1 or a plurality of the partial platforms 2 for load distribution. In the partial platform 2, ACC3, DF4, AMS5, a general agent 6, and a configuration agent 12 are executed as basic functions thereof, and provide exchange of messages in the agent platform 1, management of agent status, and management of services.
[0026]
In the partial platform 2, ACC 3 is a message router, and all combinations of the partial platform 2 on the center side and the partial platform 7 on the mobile terminal side, and between each of the partial platforms 2 and 7 and the external agent platform 14, in each platform Provides a message exchange function between agents that exist in The ACC 3 receives a message transmission request from the agent in its own partial platform 2 or the ACC 3, ACC 8 or the external agent platform 14 in the other partial platforms 2, 7, refers to the agent management database 13, and determines If the agent is within the partial platform 2, the message is transferred directly to that agent. On the other hand, if the transmission destination is not the agent in its own partial platform 2, the message is transferred to the appropriate ACC3, ACC8 or external agent platform 14. If there is no appropriate transmission destination, an error is notified to the transmission request source.
[0027]
The DF 4 registers a service (service name and providing agent identifier, detailed condition, etc.), deletes (service name and providing agent identifier) with respect to an agent existing in the agent platform 1 or the external agent platform 14. Interfaces such as change (service name and identifier of provided agent, change of condition) and condition search (service name or additional condition is used as search condition, and the identifier of agent providing service is returned as search result) provide.
[0028]
The AMS 5 registers an agent state (agent identifier, state, etc.), deletes (agent identifier), and changes (agent identifier, State, etc.), and the activation, entry and exit of the agent itself.
[0029]
The configuration agent 12 (load distribution control means) is an agent existing in the partial platform 2, and at least one is provided in the agent platform 1. The configuration agent 12 responds to an inquiry from the partial platform 7 on the mobile terminal side with the current load status of each partial platform 2 and information on the partial platform 7 (eg, regionality and load of past access to the center side). ) Is considered, the partial platform 2 suitable for the present combination with the partial platform 7 is selected and notified.
[0030]
The partial platform 7 exists for each mobile terminal such as a mobile phone or a PDA (Personal Digital Assistants). For this reason, there are generally a very large number of partial platforms 7. The partial platform 7 can be started and stopped by an operation on the mobile terminal side. At the time of start-up, it connects to a predetermined default partial platform 2. Then, it inquires of the predetermined configuration agent 12 to receive the notification of the partial platform 2 forming the current set, and thereafter performs communication and management via the partial platform 2.
[0031]
In the partial platform 7, the ACC 8 is a message router, which exists between agents in the partial platform 7, or between an agent in the partial platform 7 and another agent existing in the agent platform 1, or an external agent platform 14. Provides a function to exchange messages with agents. The ACC 8 receives a message transmission request from an agent in its own partial platform 7 or from the ACC 3, refers to the AMS 9, and transfers the message directly to the agent if the destination is an agent in its own partial platform 7. . On the other hand, when the transmission destination is not the agent in the own partial platform 7, the message is transferred to the ACC3 selected in advance. If there is no appropriate transmission destination, an error is notified to the transmission request source.
Further, the ACC 8 inquires of the configuration agent 12 about the partial platform 2 to be set this time.
[0032]
The AMS 9 registers, for the agent existing in the partial platform 7, the agent state (agent identifier, state, etc.), deletes (agent identifier), changes (agent identifier, state, etc.), and the agent itself. Provides an interface for launching, moving in and out. In addition, the functions of deletion, modification, transfer-in, and transfer-out of the agent owned by the owner of the partial platform 7 (which is not necessarily in the partial platform 7) are provided through the same interface as the above interface. I do. The status change accompanying the requested operation is always notified to the AMS 5 selected in advance, and the AMS 5 stores the status change in the agent information management database 13.
[0033]
The DF 10 registers, deletes (service name and providing agent identifier), changes (service name and providing agent identifier) a service for an agent existing in the partial platform 7, and registers the service (service name and providing agent identifier, detailed conditions, etc.). It provides interfaces such as an identifier of the agent to be provided and the content of change of the condition, and a condition search (the service name or an additional condition is used as a search condition, and the identifier of the agent that provides the service is returned as a search result). Actually, only the past search contents are stored in the cache memory. If the search contents exist in the cache memory, the search result is taken out from the cache memory and returned. On the other hand, if the search content does not exist in the cache memory, a request is made to a predetermined DF 4 for processing, and the result is returned to the request source.
[0034]
Next, with reference to FIGS. 2 to 4, the operation of distributing the load on the center side in the agent platform 1 of FIG. 1 will be described. FIG. 2 is a flowchart illustrating a flow of a process performed by the mobile terminal at startup. FIG. 2 and FIG. 3 are first and second flowcharts showing the flow of the load distribution processing performed by the configuration agent 12.
[0035]
First, processing on the mobile terminal side will be described with reference to FIG.
In FIG. 2, when the mobile terminal is activated, the partial platform 7 performs an initialization process (step S101). In the initialization processing, the default identifiers ACC3 (center side), AMS5 (center side), DF4 (center side), and the identifiers I_3d, I_5d, I_4d, and I_c of the configuration agent 12 are acquired from the internal setting file related to communication. I do.
[0036]
Then, via the default ACC3 (I_3d), the configuration agent 12 (I_c) is inquired of the ACC3, AMS5, and DF4 of the partial platform 2 on the center side, which is the current set. Then, as a result of this inquiry, the identifiers I_3a, I_5a, and I_4a of the ACC3, AMS5, and DF4 to be connected thereafter are acquired from the configuration agent 12 (I_c) (step S102). Next, these ACC3 (I_3a), AMS5 (I_5a), and DF4 (I_4a) are changed as new connection destinations, and the startup process is completed.
[0037]
Thereafter, the partial platform 7 executes the following normal processing.
The partial platform 7 performs all message communication via ACC8 and ACC3 (I_3a) in the partial platform. Also, requests for service search, registration, deletion, update, etc. from the general agent 11 in the local platform are made to the DF 10 in the local platform, and the DF 10 cannot be processed based on the contents stored in the cache memory. For the operation, the DF 10 issues an operation request to the DF 4 (I_4a). Also, requests such as agent search, registration, deletion, and update from the general agent 11 in the local platform are made to the AMS 9 in the local platform, and the AMS 9 requests the AMS 5 (I_5a) for a management operation. Then, the AMS 5 (I_5a) stores and stores the management information in the agent information management database 13.
[0038]
Next, the load distribution processing performed by the configuration agent 12 will be described with reference to FIGS.
The configuration agent 12 (I_c) starts the processing in FIG. 3 when receiving the inquiry in step S102 in FIG. 2 from the partial platform 7 on the mobile terminal side. Hereinafter, the identifier of the configuration agent 12 is omitted. The allocation of the partial platforms 2 on the center side can be performed separately for the ACC3, DF4, and AMS5. However, for convenience of explanation, it is assumed that the ACC3, DF4, and AMS5 in the same partial platform 2 are collectively allocated.
[0039]
First, the configuration agent 12 acquires the identifier P_7j of the partial platform 7 of the inquiry source. The identifier P_7j is obtained from the identifier of the transmission source included in the request message received from the mobile terminal (Step S201). Next, the configuration agent 12 searches the agent information management database 13 based on the identifier P_7j, and obtains information on the partial platform 7 (P_7j) and information on each current partial platform 2 (Steps S202 and S203). .
[0040]
The information on the partial platform 7 (P_7j) includes the history X_7j [now], X_7j [now-1],..., X_7j [now-n] of the current position and the past position (district) of the mobile terminal, and the past center side. Of the partial platform 2, and a history of the number of messages transmitted in the past from the mobile terminal (communication frequency). These pieces of information are collected by, for example, the center side platform 2 of the agent platform 1 or the mobile phone network, and stored in the agent information management database 13.
[0041]
The information on the current partial platforms 2 includes a list of the currently operating partial platforms 2 (P_2i), the operating status of each of the lists (the number of message processes per unit time M_2i, the currently connected partial platform 7). N_2i) is obtained. These pieces of information are collected at the center as needed, and are stored in the agent information management database 13.
[0042]
Also, the maximum allowable load L_2i is predetermined for each of the partial platforms 2 (P_2i). Further, the average number m of message transmissions per unit time of all the partial platforms 7 on the mobile terminal side is calculated in advance. The average number m of message transmissions can be calculated from the history or the like recorded in the agent information management database 13. The maximum load L_2i and the average number m of message transmissions are stored in the agent information management database 13, and the configuration agent 12 also acquires such information.
[0043]
Further, at least one individual partial platform 2 (P_2i) is allocated to all districts in advance. This information is stored in the agent information management database 13, and the configuration agent 12 also acquires the information.
[0044]
Next, the configuration agent 12 calculates the predicted load EL_2i in each of the partial platforms 2 (P_2i) by using the equation (1) (Step S204). In this equation (1), the number of message processes per unit time M_2i is used as the current load of the partial platform 2 (P_2i).
EL_2i = t × M_2i + (1-t) × m × N_2i (1)
Here, t is a proportional coefficient.
[0045]
Next, when the partial platform 7 (P_7j) is connected, the configuration agent 12 estimates a load EL_7j to be newly added by using the equation (2) (step S205).
EL — 7j = max {ave (m — 7j), m} (2)
Here, ave (m_7j) is the average value of the number of past communication messages of the partial platform 7 (P_7j), and max {A, B} is the larger value of A or B.
[0046]
Next, the configuration agent 12 obtains a set S including all the partial platforms 2 (P_2i) satisfying the expression (3) (Steps S206 to S209).
L_2i> EL_2i + EL_7j (3)
This set S includes all the partial platforms 2 (P_2i) whose loads do not reach the maximum load L_2i even when the partial platforms 7 (P_7j) are connected.
[0047]
Next, in FIG. 4, the configuration agent 12 determines the optimum area X_7j for the partial platform 7 (P_7j) as the current position X_7j [now] and the past position history X_7j [now-1],. It is obtained from [now-n] (step S207). For example, a score is calculated for each of the current position and the past position with a weight that decreases in the past, and the district with the highest total score is selected.
[0048]
Next, the configuration agent 12 obtains a set T including all the partial platforms 2 (P_2i) assigned to the optimal district X_7j (steps S211 to S214).
[0049]
Next, if there is a partial platform 2 (P_2i) included in both the set S and the set T, the configuration agent 12 first determines whether or not there is a partial platform 7 (P_7j) connected immediately before the partial platform 2 (P_2i). Is checked (step S215). As a result, if there is one connected immediately before, the partial platform 2 (P_2i) is selected as the current connection destination of the partial platform 7 (P_7j) and notified to the partial platform 7 (P_7j) (step S216). .
[0050]
On the other hand, if there is no connection immediately before, the partial platform 2 (P_2i) included in both the set S and the set T has a history of connection with the partial platform 7 (P_7j) in the past. It is checked whether there is a partial platform 2 (P_2i) (step S217). As a result, if there is one having a past connection history, the partial platform 2 (P_2i) is selected and notified to the partial platform 7 (P_7j) (step S218). At this time, when there are a plurality of partial platforms 2 (P_2i) having a past connection history, the one having the largest value of “L_2i− (EL_2i + EL_7j)” is selected.
[0051]
Further, when there is no partial platform 2 (P_2i) included in both the set S and the set T with a past connection history,
The one with the largest value of “L — 2i− (EL — 2i + EL — 7j)” is selected (steps S219 and S220).
[0052]
On the other hand, if the partial platform 2 (P_2i) included in both the set S and the set T does not exist, the value of “L_2i− (EL_2i + EL_7j)” is the largest among the partial platforms 2 (P_2i) included in the set S. One is selected (steps S221 and S222).
[0053]
On the other hand, if the partial platform 2 (P_2i) included in the set S does not exist, the partial platform 2 (P_2i) included in the set T is selected according to the following priority. First, the partial platform 2 (P_2i) to which the partial platform 7 (P_7j) is connected immediately before is selected with the highest priority. Next, a partial platform 2 (P_2i) having a past connection history is selected. If there is no partial platform 2 (P_2i) with a connection history in the past, the partial platform 2 (P_2i) having the largest value of “L_2i− (EL_2i)” is selected (step S223).
[0054]
As described above, in the present embodiment, when selecting the center-side partial platform 2 to which the mobile terminal-side partial platform 7 is connected, the center-side load condition (the predicted load and the predicted value of the newly added load) And the best one based on the local conditions where the mobile terminal exists. At the time of this selection, the local condition is prioritized over the load condition. As the regional condition, the one connected immediately before is given the highest priority, and the one having a history of connection in the past is given priority next. As described above, by selecting the one having the connection history, the storage contents of the cache memory can be effectively used in the DF4, the ACC3, and the like. In particular, the partial platform 2 that was connected immediately before is most likely to have valid information remaining in the cache memory, and is therefore most appropriate as the connection destination of the partial platform 7.
On the other hand, if there is no partial platform 2 having a connection history, the one with a light load is prioritized.
[0055]
According to the above-described embodiment, based on the load conditions of the center-side partial platform 2 and the local conditions where the mobile terminal exists, the plurality of center-side partial platforms 2 are optimally combined with the mobile terminal-side partial platform 7. Therefore, the agent platform (AP) function can be efficiently distributed and arranged on the mobile terminal side and the center side. In addition, since the local condition of the mobile terminal is prioritized, a more suitable center-side partial platform 2 can be allocated to the mobile terminal-side partial platform 7, and appropriate load distribution can be performed.
[0056]
As a result, the problem of load balancing due to the large number of new clients and the regional bias, which had been a problem with the conventional load balancing method, was resolved, and a large number of agents were managed on the agent platform to exchange a large amount of messages. It is possible to do.
[0057]
In the above-described embodiment, for convenience of description, the partial platform 2 is combined with the partial platform 7 on the mobile terminal side, but the ACC3, DF4, and AMS5 on the center side are combined with those in different partial platforms 2. Can be used.
[0058]
In the above-described embodiment, the agent platform is applied to the system in which the mobile terminal side and the center side are distributed. However, the present invention is not limited to the agent platform, and the system in which one function is distributed and arranged in the mobile terminal side and the center side. The same can be applied. For example, the present invention is also applicable to a client server system using a mobile terminal as a client terminal.
[0059]
In addition, a program for realizing the steps shown in FIGS. 3 and 4 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by a computer system and executed, thereby distributing the load. Processing may be performed. Here, the “computer system” may include an OS and hardware such as peripheral devices.
The “computer system” also includes a homepage providing environment (or a display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a storage device such as a hard disk built in a computer system.
[0060]
Further, the “computer-readable recording medium” refers to a volatile memory (RAM) inside a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, programs that hold programs for a certain period of time are also included.
Further, the above program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.
[0061]
As described above, the embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes a design change or the like without departing from the gist of the present invention.
[0062]
【The invention's effect】
As described above, according to the present invention, based on the load condition of the center device (the predicted load and the predicted value of the newly added load) and the local condition where the mobile terminal exists, the functions of the plurality of center devices are determined. Since the best one to be combined with the function of the mobile terminal is selected from among them, one function (for example, the AP function) can be efficiently distributed and arranged on the mobile terminal side and the center side.
[0063]
Further, if the function of the mobile terminal and the function of the center-side device having the connection history are selected, the record of the past communication contents (for example, the storage contents of the cache memory) can be effectively used. A more suitable function of the center-side device can be assigned to this function, and appropriate load distribution can be performed.
Further, if the function of the mobile terminal and the function of the center-side device connected immediately before are selected, there is a high possibility that a record of the past communication contents remains, so that a higher effect can be obtained.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a function distribution system according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a flow of processing when the mobile terminal-side partial platform 7 is activated.
FIG. 3 is a first flowchart illustrating a flow of a load distribution process performed by a configuration agent 12;
FIG. 4 is a second flowchart illustrating a flow of a load distribution process performed by the configuration agent 12.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Agent platform, 2 ... Center side partial platform, 3, 8 ... Agent communication channel (ACC), 4, 10 ... Directory facilitator (DF), 5, 9 ... Agent management system (AMS), 6, 11 ... General Agent, 7: partial platform on the mobile terminal side, 12: constituent agent, 13: agent management database, 14: external agent platform

Claims (6)

A function distribution system in which specific functions are distributed and arranged,
A plurality of center-side devices including a divided part of the specific function used in combination with the function of the mobile terminal having the specific function divided,
Load distribution control for selecting the most suitable function to be combined with the function of the mobile terminal from the functions of the plurality of center-side devices based on the load condition of the center-side device and the regional condition where the mobile terminal exists. Means,
A function distribution system characterized by comprising: 2. The function distribution system according to claim 1, wherein the load distribution control unit selects a function of the center-side device having a function of the mobile terminal and a connection history. 3. 3. The function distribution system according to claim 2, wherein the load distribution control unit selects a function of the mobile terminal and a function of the center-side device connected immediately before. 4. The function distribution system according to any one of claims 1 to 3, wherein the specific function is an agent platform. A load distribution method in a function distribution system including a plurality of center-side devices including a divided part of the specific function used in combination with the function of a mobile terminal having a specific function divided,
Based on a load condition of the center-side device and a regional condition in which the mobile terminal exists, a function that is optimal to be combined with the function of the mobile terminal is selected from the functions of the plurality of center-side devices. Load balancing method. A computer program for performing a load distribution process in a function distribution system including a plurality of center-side devices having a divided part of the specific function used in combination with the function of a mobile terminal having the specific function divided. hand,
A computer selects, based on a load condition of the center apparatus and an area condition in which the mobile terminal exists, a process of selecting an optimum function to be combined with the function of the mobile terminal from the functions of the plurality of center apparatuses. A computer program characterized by being executed by a computer.

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