JP2003032361A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless communication system that automatically updates data in a wireless communication terminal in matching with revision of data in a database. SOLUTION: A private branch exchange PBX conducting control, required for communication, is accessible to a database DB for storing an original of telephone directory as data. A memory of a terminal PS stores a copy of the original telephone directory as telephone directory data. The version number is attached to the respective original and copy telephone directories. The terminal PS and the exchange PBX are accessed to each other via a wireless channel between a wireless base station CS and the terminal PS. When the data of the original telephone directory is changed, the exchange PBX calls the terminal PS at midnight and receives the version of the copy telephone directory. When the version number of the copy telephone directory differs from the version number of the original telephone directory, the exchange PBX reads the original telephone directory from the database DB and transfers the original telephone directory to the terminal PS. The terminal PS uses the transferred data, to update the copied telephone directory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system that reflects changes in data in a database in data stored in a storage unit of a wireless communication terminal, and more particularly to information about a communication partner stored in the wireless communication terminal (for example, information about a communication partner). Phonebook data) update.

[0002]

2. Description of the Related Art A plurality of terminals (for example, telephones) and a plurality of communication lines (for example, public telephone line network PSTN) are provided, and these are connected to a communication control device (for example, private branch exchange PB).
X) has been put into practical use for a communication system for connecting and communicating. Further, there is a communication system (so-called office cordless system) that uses a wireless communication line in a part of the line between the terminal and the communication control device.

In such a communication system, a telephone number commonly used by each terminal is set. And
This list of telephone numbers (phone book) is created and stored in the memory provided in each terminal for use. The telephone directory includes, for example, extension numbers of members and abbreviated numbers of customers who need to make frequent calls.

The telephone directory manager (operator) changes the telephone directory in accordance with the change of the member or the customer. Then, the operator notifies the members of the changed contents and leaves the correction of the stored contents of each terminal to the user of each terminal.

On the other hand, when using software for managing telephone directory data, a telephone directory is created as a database. Then, after connecting the terminal and the personal computer on which the management software is installed, the contents of the database of the telephone directory had to be transferred to the memory of the terminal for each terminal.

Further, a technique has been proposed in which a user of a terminal can search a database of a telephone directory installed in a private branch exchange network (see Japanese Patent Laid-Open Nos. 2000-184046 and 11-298609). .

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the conventional techniques disclosed in Japanese Patent No. 184046 and Japanese Patent Laid-Open No. 11-298609, a terminal and a database are connected by a communication channel when searching a database. If a limited number of communication channels are used for each search, there is a problem that calls from other terminals are restricted during the search time. further,
If the database server fails, the search cannot be performed, and there is a risk that the call will be possible but the number will not be known, but the call cannot be made.

In order to solve the above problems, the present invention provides
An object of the present invention is to provide a communication system capable of searching for a communication partner based on the latest telephone directory data and not occupying a channel at the time of searching.

[0009]

According to a first aspect of the present invention, there is provided a wireless communication terminal (PS) having a storage unit for storing partner information, which is information on a communication partner, and a wireless line connected to the wireless communication terminal. A base station (CS) and a communication control device (PBX) for controlling communication with the wireless communication terminal,
In the wireless communication system including, the communication control device includes a database that stores destination information, and an information transfer unit that controls transfer of the destination information from the database to the wireless communication terminal.

According to a second aspect of the present invention, the information transfer means of the first aspect of the present invention comprises an update necessity determining means for determining whether or not the destination information stored in the wireless communication terminal needs to be updated.
And a transfer execution unit that transfers the destination information from the database to the wireless communication terminal when the update necessity determination unit determines that the destination information needs to be updated.

A third aspect of the present invention is an update, which serves as a guide for determining old and new, between the destination information stored in the storage unit of the wireless communication terminal of the second aspect and the destination information stored in the database. Information is stored in association with the destination information, and the update necessity determination means determines whether or not the destination information stored in the storage unit of the wireless communication terminal needs to be updated based on the update information. To judge.

In a fourth aspect of the present invention, the update information of the third aspect is added to the destination information stored in the storage unit of the wireless communication terminal and the destination information stored in the database. The update necessity determining means compares the update information on the wireless communication terminal side with the update information on the database side, and compares the partner information on the wireless communication terminal side with the partner information on the database side. If the destination information is older, it is determined that the destination information on the wireless communication terminal side needs to be updated.

In a fifth aspect of the present invention, when the wireless communication terminal of the fourth aspect of the present invention is instructed by the communication control device to transfer the destination information stored in the database, the other party stored in the storage section is displayed. Reply the above update information about destination information,
The communication control device determines that the wireless communication terminal has responded to the presentation of the transfer of the other party information based on receiving the returned update information.

In a sixth aspect of the present invention, the update necessity determination means according to any one of the second to fifth aspects of the present invention, wherein the update necessity determination means is one of the destination information stored in the storage unit of the wireless communication terminal, The update target portion that needs to be updated is identified based on the destination information stored in the database, and the information transfer unit identifies the portion corresponding to the update target portion of the destination information stored in the database. Select and transfer to the wireless communication terminal.

In a seventh aspect of the present invention, the communication control device according to any one of the first to sixth aspects transfers the destination information stored in the database to the wireless communication terminal at a predetermined time. However, if the wireless communication terminal fails to update the destination information stored in the storage unit based on the destination information transferred by the communication control device, the wireless communication terminal retransmits the destination information. Retransmission request means for requesting the communication control device is provided.

In an eighth invention, the information transfer means of any one of the first invention to the seventh invention transfers the destination information to the wireless communication terminal by using the wireless line. It has a transfer time control means for permitting in a small time zone.

A ninth aspect of the present invention is to update the destination information stored in the storage section between the communication control device and the wireless communication terminal according to any one of the first to eighth aspects. The communication number associated with is set,
When one of the communication control device and the wireless communication terminal notifies the other of the communication number, the information transfer means transfers the destination information to the wireless communication terminal.

In the above description, the reference numerals in parentheses indicate the correspondence with the configuration of the embodiment. These reference signs are not intended to limit the scope of the claims.

[0019]

According to the first aspect of the present invention, the destination information stored in the database is transferred to the wireless communication terminal by the communication control device, whereby the destination information stored in the storage unit of the wireless communication terminal. Can be updated.
The user himself / herself of the wireless communication terminal is relieved of the need to update the destination information, and the burden is reduced.

According to the second aspect of the present invention, when the update necessity determination means determines that the destination information of the wireless communication terminal needs to be updated, the transfer execution means transfers the destination information so that the update is unnecessary. In this case, the transfer is avoided. From this, it becomes possible to prevent the wireless line from being occupied by an unnecessary update.

According to the third aspect of the invention, it is judged whether or not the update is necessary based on the update information. For example, when the destination information on the database side is changed, the communication control unit may set a flag indicating the change as update information. Based on this flag, the communication control device can recognize that the changed destination information must be transferred to each wireless communication terminal.

According to the fourth aspect of the invention, when the partner information on the wireless communication terminal side is older than the partner information on the database side, the update necessity determining means needs to update the partner information on the wireless communication terminal. Then, in response to this, the information transfer means transfers the new destination information stored in the database to the wireless communication terminal storing the old destination information. As a result, the content of the destination information on the wireless communication terminal side is updated, and the user of the wireless communication terminal can use the new destination information.

According to the fifth aspect of the invention, the update information used to determine whether or not the update is necessary is a response from the wireless communication terminal to the communication control phase. As a result, the judgment information for the necessity of updating the partner information on the wireless communication terminal side to be judged by the updating necessity judgment means of the communication control device is given, and the judgment becomes possible.

According to the sixth aspect of the present invention, a part of the destination information in the database, which is necessary for updating in the wireless communication terminal, is selected and transferred, so that the transfer is required more than the case where all the destination information is transferred. Time is reduced.
As a result, the transfer of the destination information to the wireless communication terminal side can be completed quickly, and along with this, the time to occupy the communication line for updating the destination information of the wireless communication terminal is shortened. Traffic is reduced.

According to the seventh aspect of the invention, even when the update of the destination information of the wireless communication terminal by the transfer performed at a predetermined time has failed, the retransfer request means requests the retransfer, whereby the wireless communication terminal is requested. The partner information on the side is updated. In this way, update opportunities are guaranteed multiple times and the accuracy of update execution is improved.

According to the eighth aspect of the invention, the transfer is permitted during the time when the wireless line is idle, so that the wireless line is allocated for updating the destination information during the time when the wireless line is busy. This can prevent a substantial decrease in the number of wireless lines that can be used for communication.

According to the ninth invention, the specific communication number triggers the transfer of the destination information. For example, when the user of the wireless communication terminal wants to update the destination information in the wireless communication terminal, when the user makes a call to a specific telephone number using the wireless communication terminal, the destination information is transferred from the database. The user is relieved of the trouble of performing a special operation for transferring the destination information, and the operation required for the transfer is simplified.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram illustrating the configuration of a communication system according to this embodiment. Although the communication system shown in the figure is configured for the premises as an example, it can be applied to a public system.

The communication system according to the present embodiment mainly comprises a private branch exchange PBX. In the exchange PBX,
A plurality of radio base stations CS and a public telephone line network PSTN are connected. Further, the exchange PBX is provided with a communication control unit, and the exchange PBX performs various controls relating to the communication system according to a program stored in the communication control unit. For example, the terminal PS and other communication device (not shown) via the wireless base station CS and public telephone network PSTN
Control communication with.

A telephone directory database DB is connected to the exchange PBX so that it can be called. The exchange PBX overwrites the updated telephone directory in the database DB with the telephone directory stored in the memory of the terminal PS according to the programming of the communication control unit. The communication control part is programmed so that such an updating operation is performed in response to the instruction from the operator to execute the automatic updating, or whenever the telephone directory is updated. If so, it is automatically executed by the exchange PBX. Alternatively, the communication control unit may be programmed so that the update operation is automatically started at a fixed time interval regardless of the presence or absence of the update. That is, the telephone directory data in the terminal PS is updated by the communication control unit when a predetermined execution condition is satisfied.

The database DB is constructed so that it can be called from the exchange PBX as described above. Then, the call destination and a number that identifies the call destination (a telephone number such as an external number or an extension number) are listed in association with a number (record number) for calling the information of the call destination,
It is stored as the original phone book. Here, the telephone directory is a group of data that can be used when the terminal PS makes a call, and is used to determine the name of the sender from the telephone number for display when the terminal PS makes an incoming call. It is a group of data to be collected. That is, the telephone directory is an example of a set of data that can be used during communication.

In the communication system according to the present embodiment, the database DB serves as the database server and the exchange PB.
It is provided outside X. However, the database DB
May be stored in a storage means provided inside the exchange PBX.

The radio base station CS sets up a radio communication line by selecting a channel for communication with the terminal PS under the control of the exchange PBX.

Further, in the communication system of the present embodiment, a plurality of personal handyphone system terminals PS are provided as terminals. A memory is provided in each terminal PS. Then, the telephone directory data stored in the database DB transferred from the exchange PBX is copied and stored in this memory.

When the user of the terminal PS makes a call by making a call to the call destination on the premises or the registration destination of the abbreviated number, first,
The telephone directory data stored in the terminal PS is called and displayed on the display screen of the terminal PS. Then, by moving the cursor, inputting characters, or the like, a destination to which a call is desired is searched and selected from the phone book. Then, the number corresponding to the selected name is transferred from the terminal PS to the base station C.
A call can be made by calling S. The name is searched only in the terminal PS, and the database PS is not accessed from the terminal PS.
Therefore, the terminal PS and the exchange PBX (database DB)
There is no communication between and. Therefore, the radio channel between the radio base station CS and the terminal PS provided in the communication system is used after the call destination is selected and the telephone number of the call destination is transmitted to the base station CS. It When the data (telephone number or the like) in the database DB is changed, an arbitrary operator rewrites and updates the telephone directory in the database DB. At the time of updating, the version number represented by a symbol such as an alphabetic character or a number, which is input by an operator using an input means (for example, a keyboard) or is automatically and sequentially determined by the communication control unit in the exchange PBX. Is attached to the telephone directory in the database DB. The version number is assigned according to a certain regularity so that the update status can be clearly understood. For example,
The new version of the phonebook will have a higher version number. In addition, the communication control unit automatically registers in the database DB that the update of the phonebooks of all terminals PS is not completed in response to the update of the phonebooks.

Of course, the update date and time of the telephone directory may be recorded as data, even if no version number is attached. It suffices to be able to determine the update status of the phone book in the database DB and the phone book in the terminal PS by comparing the update dates and times. Further, the update is possible even if the update judgment material such as the date or the version number is not added. The communication control unit is configured to transfer the updated contents to the terminal PS whenever the phone book in the database DB is updated, and cause the terminal control unit to overwrite the corresponding data of the phone book stored in the terminal PS. Just do it.

The exchange PBX transfers the changed telephone directory data stored in the database DB to the terminal PS,
The phonebook data stored in the memory of the terminal PS is updated. As described above, the update is performed when the communication control unit determines that the predetermined execution condition is satisfied.

It is convenient for the telephone book data in the terminal PS to be automatically updated as soon as the telephone book in the database DB is changed, since it is possible to make a call based on the latest telephone book data. is there. However, it is generally during the daytime that the original telephone directory in the database DB is updated by the operator, which coincides with the time zone in which calls can be frequently made using the terminal PS. Therefore, if a wireless channel is used during the day for updating the telephone directory in the terminal PS, traffic for updating the telephone directory data increases, which may cause troubles such as not being able to secure a channel used for a call. is there.

Therefore, if the need for immediate updating is low, it is advisable to set the exchange PBX to update during times when the frequency of calls is low (for example, midnight). This can be realized by providing the communication control unit with a clock function such as a timer (counter) that counts time, and setting the automatic update at a desired time. Furthermore, updating at a time of low call frequency rather than at a time of high call frequency can increase the number of wireless channels used for update, and update for all terminals PS. It is possible to shorten the time required for performing.

The time when the transfer is performed is designated by using an input means such as a keyboard. Exchange P according to the designated time
The initial value of the timer in the BX is set, and the timer starts operating. The exchange PBX prohibits the update before the timer expires, but permits the update when the timer expires at the designated time. Of course, when the telephone directory in the terminal PS needs to be updated immediately, such as when the frequently used number is changed, the operator instructs the exchange PBX to perform automatic update immediately. Is also good. In this case, the operator immediately inputs an instruction to perform the updating process. In response to this, the communication control unit immediately executes the update process.

It is necessary to update the telephone directory in the terminal PS,
When the time to execute the update process is specified, the exchange PBX (communication control unit) starts the automatic update process at the specified time. FIG. 2 is a flowchart illustrating the operation of the exchange in the automatic update process. Also, FIG.
FIG. 6 is a time chart illustrating a sequence between the exchange PBX, the radio base station CS and the terminal PS.

First, in step S1 of FIG. 2, the exchange PBX establishes a radio channel between the base station CS and the terminal PS and calls the terminal PS. Here, in a communication system in which a plurality of terminals PS are provided, the terminal P
The number of S may be greater than the number of wireless channels.
Further, the capacity of the exchange PBX is also limited, and the number of terminals PS that can be processed at one time is limited. Therefore, in the subsequent processing, the exchange PBX secures a wireless channel for a call, divides the plurality of terminals PS into a plurality of groups, and calls the terminal PS using the remaining wireless channels, so that the terminal PS is finally aggregated. Phonebook data is updated for all terminals PS. Therefore, in the first step S1, a call is first made to the first terminal PS.
Of course, if the number of channels used for updating the telephone directory data and the capability of the exchange PBX permit, the telephone directory data of all terminals PS may be updated all at once.

Specifically, as illustrated in FIG. 3, first,
A call setup message is issued from the exchange PBX to the base station CS (sequence step SQ1). Base station CS
Receiving this, the terminal PS is called by the control channel PCH (SQ2), and a process of establishing a wireless channel between the base station CS and the terminal PS is performed (SQ3). Details of this process are well known, and description thereof will be omitted. When the wireless channel is established, an RT (radio transmission management) incoming call response message is issued from the terminal PS to the base station CS (SQ
4). Receiving this, the base station CS, which knows that the terminal PS is ready, then sends a CC call setup message to the terminal P.
It is transmitted to S (SQ5).

Here, in the call setting message transmitted in the sequence step SQ1, the "user book information request (UUI)" includes "telephone book update request". This UUI = “phone book update request” is included in the CC call setup message of sequence step SQ5 as illustrated in FIG. As a result, a request for updating the telephone directory is transmitted from the exchange PBX to the terminal PS (step S2 in FIG. 2). In response to this, in the subsequent sequence step SQ6 of FIG. 3, the CC call setting acceptance message is transmitted from the terminal PS to the base station CS. In response to the acceptance of the call setup, in sequence step SQ7, the RT / MM function is established between the terminal PS and the base station CS (MM: mobility management), and the terminal PS is authenticated. When these are completed, a call setup acceptance message is transmitted from the base station CS to the exchange PBX (SQ
8). Further, the terminal PS sends a CC calling message to the base station CS (SQ9), and accordingly the base station CS
Sends a call message to the exchange PBX (SQ10). As a result, the terminal PS and the exchange PBX are
It becomes possible to communicate with.

Subsequently, in each of sequence step SQ11 and sequence step SQ12,
The CC response message and the response message are transmitted from the terminal PS to the base station CS and from the base station CS to the exchange PBX. Here, the reason why the terminal PS sends the CC response message in the sequence step SQ11 after the sequence step SQ9 is that the terminal PS is set in the automatic response mode so that the updating of the telephone directory can be started as soon as possible. Is.

The UUI of each of the CC response message and the response message (SQ11 and SQ12) includes the version number of the telephone directory in the terminal PS. By thus notifying the version number of the telephone directory from the terminal PS to the exchange PBX (step S3 in FIG. 2), the exchange PBX recognizes that the terminal PS has received the telephone book update request. Upon receiving the notification of the version number, the exchange PBX determines whether or not the telephone directory in the terminal PS needs to be updated (step S in FIG. 2).
4).

Whether or not the telephone directory of the terminal PS needs to be updated is
The version number of the notified telephone directory of the terminal PS and the notified version number of the telephone directory of the database DB are compared by the communication control unit. If the version number on the terminal PS side is different from the version number on the database DB side, the communication control unit determines that the update is necessary (YES) in step S4 of FIG. 2 and proceeds to step S5. Then, in order to notify that the version number has been received, a response confirmation message is transmitted from the exchange PBX to the terminal PS via the base station CS (sequence steps SQ13 and SQ1 in FIG. 3).
4).

As can be understood from the above description, the notified version numbers (SQ11 and SQ12) are also used as proof of the reception of the telephone book update request and as a material for determining the necessity of updating. This eliminates the need to separately create and transmit a message for responding to the telephone book update request and a message for notifying the necessity of updating, and streamlines control in the local area network. Along with this, the processing load on the terminal control unit and the communication control unit is reduced.

On the other hand, when the version number on the terminal PS side is the same as the version number on the exchange PBX side, the communication control unit does not need to update in step S4 (NO).
To judge. If there is no need to update, step S2
At 0, it is registered in the database DB that updating of the telephone directory of the terminal PS is unnecessary. Then, after disconnecting the wireless channel (S8), the process proceeds to step S9 to process the remaining unupdated terminal PS. The fact that the update process for this terminal PS is unnecessary is registered in the database DB (S20), so that the communication control unit recognizes this terminal PS as a target to be updated in step S9. Is avoided.

In step S5, data is transferred and overwritten in order to update the telephone directory of the terminal PS. Specifically, the sequence step SQ15 of FIG.
, PIAFS (PHS In
internet AccessForum Standard
A data transfer protocol such as rd) is established, after which the data in the telephone directory of the database DB is exchanged with the exchange PB.
It is transferred from X to the terminal PS via the base station CS.

Further, in step S5 of FIG.
When the data transfer is started, the timer is activated to start the countdown. This countdown is timed out after a lapse of a predetermined time to forcibly stop the transfer process in case a failure occurs in the data transfer (S1).
This is done for 1). That is, with respect to the time required to update the telephone directory data, an allowable time (initial value of countdown) in which it is possible to wait up to this maximum is set for each terminal PS. By providing such a time limit, it becomes possible to postpone a terminal PS that does not update well and put priority on updating other terminals PS.

Specifically, if the transfer is not completed even after a lapse of a certain time (step S10), the transfer is once terminated by the exchange PBX (step S1).
1). The terminal PS for which the transfer is forcibly terminated is maintained in the state of being registered in the database DB as an unupdated terminal, and this registered state is not yet updated (step S9).
"YES") in the judgment.

When the terminal PS finishes receiving all the data in the telephone directory, it transmits to the base station CS in the sequence step SQ16 of FIG. 3 including the information "phonebook update completed" in the UUI of the CC disconnect message. To do. After this, the terminal control unit provided in the terminal PS stores the received data in the memory of the terminal PS and updates the telephone directory.
When the update is completed, this terminal control unit rewrites the version number of the telephone directory with the version number of the telephone directory data sent from the exchange PBX. This allows the terminal PS
Can store an accurate version number and notify the exchange PBX at the next update process.

In step S6 of FIG. 2, the exchange P
The communication control unit of the BX determines whether the update is successful. Whether or not the update is successful is determined based on the disconnection message of sequence step SQ17 of FIG. When the base station CS receives the CC disconnection message from the terminal PS (sequence step SQ16 in FIG. 3),
To the exchange PBX, the message "Ultimate phonebook update completed" is issued by UU.
Send the disconnect message included as I (SQ1
7). When the communication control unit of the exchange PBX receives this disconnection message, it determines that it has ended normally (YES in step S6 of FIG. 2 (successful update)).

If "YES" is determined, in step S7, the countdown by the timer is completed and the process associated with the completion of the update is performed. Switch PB
The communication control unit of X registers in the database DB that the update of the telephone directory of the terminal PS has been normally completed. By this registration, this terminal PS is grasped by the exchange PBX as an updated terminal, and is excluded from the unupdated terminal PS in step S9.

Further, the exchange PBX sends a release message to the base station CS (sequence step SQ of FIG. 3).
18) Prompt the base station CS to release the radio channel. In response, the base station CS sends a CC release message to the terminal PS (SQ19). When this CC release message is transmitted, the base station CS immediately transmits the release completion message to the exchange PBX in sequence step SQ20 without waiting for the reply (SQ21) of the CC release completion message from the terminal PS. As a result, the communication control unit of the exchange PBX can immediately start updating the unupdated terminal PS. As described above,
In step S8 of FIG. 2, the base station CS and the terminal P
The wireless channel between S is disconnected according to the instruction from the exchange PBX.

On the other hand, the disconnection message (SQ17 in FIG. 3)
When the exchange PBX does not receive the message, it is determined to be "NO" in step S6, the process proceeds to step S10, and the communication control unit determines whether or not a time-out has occurred. When the count number becomes “0”, there is no reply from the terminal PS, and it is determined that the telephone directory update process is abnormal. In response to this, the communication control unit performs step S1.
The transfer is aborted in 1 and the wireless channel is disconnected in step S8. If the count number is not "0", the process returns to step S6.

Here, the set time of the timeout is as shown in FIG.
If there is a large amount of data transferred in sequence step SQ15, the longer the control becomes, and if the data is smaller, the shorter the control becomes. Therefore, it is preferable to program the communication control unit so that the initial value of the countdown timer in step S5 is set according to the amount of data to be transferred.

In step S9, the unupdated terminal P
Whether or not S is present is determined by the communication control unit of the exchange PBX. This determination is made based on whether or not there is a terminal PS registered as unupdated in the database DB of FIG. There is an unupdated terminal PS (Y
In the case of (ES), the process returns to step S1, and the communication control unit performs the update process on the unupdated terminal PS. In addition,
Regarding the terminal PS for which the update process has once failed, the communication control unit may be set so that the update is performed after a certain period of time, in addition to the setting that the update is postponed. On the other hand, when there is no unupdated terminal PS, it is determined to be "NO" and the updating process in the communication system is ended.

By the above-described processing, the updated contents are automatically copied to the phone book in each terminal PS in response to the update of the phone book in the database DB. As a result, the telephone directory of each terminal PS can be updated to the latest contents at an early stage without annoying human labor. For example, if it is set to update at night, it will be possible to make a call using the latest phonebook the next morning, and the user will have to check whether the data in the phonebook is the latest. Eliminates the need to In addition, all the telephone numbers on the premises are database D
If it is registered in the telephone directory in B, it is not necessary for the user of the terminal PS to refer to the telephone directory of each paper.

Further, the call destination may be selected by referring to the telephone directory stored in the memory of the terminal PS. Therefore, the congestion of the wireless line can be alleviated as compared with the conventional configuration in which the terminal PS occupies the wireless channel to refer to the telephone directory and accesses the database DB.

When the terminal PS has a function of displaying the name of the called party (for example, company name, department name or person in charge) on the display panel, names corresponding to all extension numbers are registered. By doing so, the contents of the telephone directory of the terminal PS are kept up-to-date so that the correct name according to the latest situation is displayed. That is, based on the ID recognition means (for example, a terminal control unit) that recognizes the ID (for example, a telephone number) of the communication partner, and the recognized ID and the partner information (for example, a telephone directory) that is information about the communication partner. By providing the wireless communication terminal (for example, the terminal PS) with the specifying means (for example, the terminal control unit) for specifying the communication partner and the notifying means (for example, the display panel) for notifying the user of the specified communication partner, It becomes possible to know who the communication partner is at the time of communication. In particular, when the communication partner is the calling party, it is possible to smoothly respond to the callee by specifying the callee when receiving a call.

Further, when the search function of the telephone directory of the terminal PS includes, for example, a keyword search for accepting an input of a department name, a person in charge, a department code or a floor number, the search according to the latest situation is performed. It will be possible and the reliability of the search will be improved. In such a search function, the ID of the communication partner, the ID of the communication partner, and preferably the characteristics of the communication partner (for example, the attribute of the partner such as the department name) are associated with each other in the database DB as communication partner information. Receiving means (for example, a terminal control unit) that receives a keyword that is stored and that is input by the user, and a search that searches for communication destination information based on the input keyword and selects relevant information of the keyword from the communication destination information. It is realized by equipping a wireless communication terminal (for example, the terminal PS) with a means (for example, a terminal control unit) and preferably a notifying means (for example, a display panel) for notifying the user of the selected related information.

As described above, since it becomes possible to use the latest version of the telephone directory when using various functions relating to the telephone directory added to the terminal PS, the convenience of the terminal PS is improved.

In the above description, the case where the data relating to the update of the telephone directory is transmitted and received by using the UUI (user user information element) is taken as an example. However, other information elements such as a facility information element and a source / destination subaddress information element may be used as long as the information can be transferred on the local area network.

Instead of using such information elements, updating of the telephone directory may be started upon receiving an incoming call from a preset specific telephone number (communication number). . In this case, the communication control unit in the exchange PBX calls the terminal PS using a specific telephone number at the set time. At this time, the base station CS and the terminal PS
A wireless channel is established between and, and the terminal PS can be called. When the terminal control unit of the terminal PS recognizes the incoming call from this specific telephone number, it starts the process of accepting the update of the telephone book and returns the version number of the telephone book to the communication control unit.

The communication control unit compares the returned version number with the version number of the telephone directory in the database DB to determine whether or not the transfer is necessary. When it is determined that the transfer is necessary, the communication control unit starts transferring the telephone directory data stored in the database DB to the terminal PS. After this, the terminal P is followed according to the procedure illustrated in FIG. 2 and FIG.
The phone book of S is updated.

Further, for the data transfer, either in-band data transfer such as "PIAFS standard" or out-band data transfer such as "CC user information" may be used. That is, it does not matter whether it is a control channel or a call or data communication channel.

Further, the update of this embodiment cannot be realized only in the wireless network. A transfer protocol such as PIAFS is not implemented in the wired telephone network, but if the data transfer (user user information) on the control channel is used, the wired telephone network can relatively easily perform the update processing of the present embodiment. It is possible. Of course, the wired telephone network is ISDN (Integrated S)
If the services Digital Network) is used, there is no problem in implementation.

Furthermore, the update is not limited to the update in the communication network for the premises. For example, even a terminal incorporated in a wired public communication network can update the telephone directory stored in the memory of each terminal using the exchange. In this case, in addition to ordinary phone numbers, the phone book
It may include the address of the Internet home page.

The updating of the telephone directory does not have to be performed by rewriting all the data in the telephone directory in one update process. For example, the phone book may be divided and the version number of the phone book may be set for each divided unit. In this case, the version number of the telephone directory in the database DB and the version number of the telephone directory in the terminal PS are compared by the communication control unit of the exchange PBX for each division unit.
The version number on the database DB side is the terminal P.
If the version number is newer than the version number on the S side, the data of the telephone directory of that unit is transferred to the terminal PS, and this data is stored in the terminal PS.

As described above, the communication control device (for example, the exchange PBX) determines whether or not it is necessary to update each part of the telephone directory divided into a plurality of parts, and updates the partner information regarding the communication partner. Is determined to be necessary, and is selectively transferred from the communication control device to the wireless communication terminal (for example, the terminal PS). In this way, the communication control device transfers the data only for the portion that needs to be updated, and the data is stored in the storage unit (memory) of the wireless communication terminal, whereby the time required for the update is shortened. Note that it is efficient to divide the telephone directory in units of meaningful groups, such as departments. This is because when there is a change in a specific department, it is sufficient to update only this department.

In the above description, the telephone directory of the terminal PS is updated by the exchange PBX, but the terminal PS may request the exchange PBX to start the update. A request for "confirm phonebook update" is newly defined in advance, and is set so that this request can be included in a message from the terminal PS to the exchange PBX. This request includes the version number of the telephone directory on the terminal PS side, and this number and the version number on the database DB side are compared by the communication control unit of the exchange PBX. When the communication control unit determines that the number on the database DB side is newer, the data is transferred and the terminal P
The terminal control unit of S updates the telephone directory.

As described above, the wireless communication terminal (for example, the terminal PS) requests the communication control device (for example, the exchange PBX) to transfer the other party information (for example, the telephone directory) regarding the communication partner, and the communication control device makes this request. In response, it is determined whether or not the destination information needs to be updated, and if it is determined that the destination information needs to be updated, the destination information is transferred from the database to the wireless communication terminal. In this way, if the terminal PS is set so that the action can be performed, the terminal PS is updated when the terminal is busy, the power is off, or out of the service area at the update setting time. When the update cannot be performed within the set time period of, it becomes possible to supplementarily update.

Of course, such a supplementary update may be performed using the above-mentioned specific telephone number specially set for the update. The terminal PS requesting the update calls the exchange PBX (communication control unit) using this telephone number and notifies the version number of the telephone directory in the memory. The communication control unit compares the notified version number of the terminal PS side with the version number of the telephone directory of the database DB,
It is determined whether or not the telephone directory on the terminal PS side needs to be updated. Terminal PS
If the version number on the side is older than that on the database DB side, the communication control unit transfers the telephone directory data in the database DB to the calling terminal PS.

In the above description, an example of transferring data from the exchange PBX to the terminal PS has been described.
It is of course also possible to transfer data from the exchange to the exchange PBX. For example, it is assumed that a member knows that the customer's telephone number has been changed and updates the telephone directory of the terminal PS used by the member. With this update, the version number of the telephone directory of the terminal PS is also updated. The exchange PBX starts the process at the set time and requests all the plurality of terminals PS to transmit the version number of the telephone directory. When the version number is transmitted from the terminal PS, the exchange PBX
Compares these version numbers with the version numbers of the telephone directory in the database DB.

When it is determined that the version number transmitted from the terminal PS side is newer than the version number on the database DB side, the exchange P
The communication control unit in the BX requests the terminal control unit in the terminal PS that stores the telephone book data of the new version number to transfer the telephone book data. When the telephone directory data is transferred, the communication control unit rewrites the data in the database DB using this data. When the rewriting ends, the version number of the phonebook in the database DB is replaced by the version number of the phonebook data used for the rewriting by the communication control unit.

When the telephone directory data in the database DB is updated as described above, it becomes necessary to reflect the updated telephone directory data in another terminal PS. Therefore,
The communication control unit transfers the telephone directory data in the database DB to the terminal PS having a version number older than the updated version number of the database DB, and instructs the terminal control unit to update. Of course, it is also possible to set such that the telephone directory data is transferred from the terminal PS having the latest telephone directory data to the terminal PS having the old telephone directory data, not from the database DB.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of a communication system.

FIG. 2 is a flowchart illustrating a processing procedure of a communication control unit provided in a private branch exchange PBX.

FIG. 3 is a time chart illustrating a sequence in the communication system when the telephone directory of the terminal PS is updated.

[Explanation of symbols]

CS wireless base station DB database PBX private branch exchange PS terminal

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04M 11/00 302 H04Q 3/62 5K101 H04Q 3/62 H04B 7/26 MF term (reference) 5K024 CC11 GG03 GG05 5K027 AA11 BB01 HH21 5K036 AA11 DD32 DD39 DD41 DD42 DD48 5K049 BB04 BB16 FF32 GG07 GG11 5K067 AA21 BB04 DD16 DD17 EE02 EE10 EE16 FF23 HH17 HH22 HH23 5K101 LL12 MM07 HH22

Claims (9)

[Claims] 1. A wireless communication terminal having a storage unit for storing partner information, which is information on a communication partner, a base station connected to the wireless communication terminal by a wireless line, and communication with the wireless communication terminal. A communication control device for controlling,
In a wireless communication system including: the communication control device, and a database that stores destination information, and an information transfer unit that controls transfer of the destination information from the database to the wireless communication terminal. A wireless communication system. 2. The wireless communication system according to claim 1, wherein the information transfer means determines whether or not the destination information stored in the wireless communication terminal needs to be updated. And a transfer execution unit that transfers the destination information from the database to the wireless communication terminal when the update necessity determination unit determines that the destination information needs to be updated. Wireless communication system. 3. The wireless communication system according to claim 2, wherein a new / old judgment is made between partner information stored in a storage unit of the wireless communication terminal and partner information stored in the database. Update information as a guide is stored in association with the destination information, and the update necessity determination unit updates the destination information stored in the storage unit of the wireless communication terminal based on the update information. A wireless communication system characterized by determining whether or not it is necessary to perform. 4. The wireless communication system according to claim 3, wherein the update information includes each of the destination information stored in the storage unit of the wireless communication terminal and the destination information stored in the database. The update necessity determination means compares the update information on the wireless communication terminal side with the update information on the database side, and the wireless communication terminal is more than the partner information on the database side. A wireless communication system, characterized in that when the partner information on the side is older, it is determined that the partner information on the wireless communication terminal side needs to be updated. 5. The wireless communication system according to claim 4, wherein the wireless communication terminal is instructed by the communication control device to transfer the destination information stored in the database.
The communication control device replies the update information related to the destination information stored in the storage unit, and the communication control device receives the update information returned by the wireless communication terminal to transfer the destination information. A wireless communication system characterized by determining that it has responded to a presentation. 6. The wireless communication system according to any one of claims 2 to 5, wherein the update necessity / unnecessity determining means stores the other party information stored in the storage unit of the wireless communication terminal. Among them, the update target portion that needs to be updated is identified based on the destination information stored in the database, and the information transfer unit corresponds to the update target portion of the destination information stored in the database. A wireless communication system, wherein a part to be selected is selected and transferred to the wireless communication terminal. 7. The wireless communication system according to claim 1, wherein the communication control device sets the destination information stored in the database to the wireless communication at a predetermined time. When the wireless communication terminal fails to update the destination information stored in the storage unit based on the destination information transferred by the communication control device, the wireless communication terminal transmits the destination information of the destination information. A wireless communication system comprising retransfer requesting means for requesting the communication control device to perform retransfer. 8. The wireless communication system according to claim 1, wherein the information transfer unit transfers the destination information to the wireless communication terminal by using the wireless line. A wireless communication system having a transfer time control means for permitting the use of the device during a time period when the use of the device is low. 9. The wireless communication system according to claim 1, wherein between the communication control device and the wireless communication terminal, the other party stored in the storage unit. A communication number associated with the update of information is set, and when one of the communication control device and the wireless communication terminal notifies the other of the communication number, the information transfer means outputs the destination information. A wireless communication system for transferring to the wireless communication terminal.