JP2000312236A - Communication controller and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the communication controller that does no assign an identifier having been assigned as the identifier of its own terminal before to a current identifier and causes no incorrect operation due to mis-recognition of the terminal identifier having been assigned before from the current terminal identifier in a communicate ion network system where communication terminals can communicate information with each other. SOLUTION: The communication controller consists of a user information processing section 101 and a communication control section 102. The communication control section 102 consists of a reception section 112 that receives terminal identification information having information of terminal identifiers of other terminals sent from one or a plurality of the other terminals during communication at present, an other- terminal identifier storage section 114 that stores the terminal identifiers of the other terminals obtained from all terminal identification information sets received from the reception section 112, an own-terminal identifier storage section 113 that stores past terminal identifiers of its own terminal, and an own-terminal identifier setting section 115 that sets one terminal identifier among a plurality of preset terminal identifiers available of the communication that are the terminal identifiers other than those stored in the other-terminal identifier storage section 114 and the own-terminal identifier storage section 113.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control device and a communication control method for mutually communicating between a plurality of portable information terminals.

[0002]

2. Description of the Related Art Hitherto, there has been an IP address setting technique as a technique for setting a terminal identifier for uniquely specifying a communication terminal. However, there is a problem in that the assignment of a terminal identifier such as an IP address is assigned by a network administrator and cannot be automatically set in each communication terminal.

[0003] In addition, it is possible to automatically assign a terminal identifier by using a DHCP server. However, in a network premised on the movement of communication terminals, a terminal identifier is not assigned when a connection to the DHCP server cannot be established. There was a point.

Further, even if a terminal identifier is automatically assigned from the surrounding environment, by assigning a terminal identifier that existed in the past, the current terminal identifier and the terminal identifier assigned in the past are erroneously recognized and are completely different. There is a problem that an illegal operation is performed by transmitting data to a terminal or receiving illegal data.

Further, a group is formed by a plurality of terminals,
When communicating between terminals in a group, even if a group identifier for identifying each group is automatically set, the group identifier that existed in the past and the current group identifier are misidentified and data is transmitted to a different group. There has been a problem in that receiving data from a different group causes incorrect operation such as misrecognizing members in the group.

[0006]

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to automatically assign a terminal identifier for uniquely identifying a communication terminal and a group identifier for uniquely identifying a group, It is still another object of the present invention to provide means for setting an identifier that is not erroneously recognized as a terminal identifier or a group identifier that existed in the past.

[0007]

According to a first aspect of the present invention, there is provided a communication control apparatus in a communication terminal in a communication network system in which information can be exchanged between communication terminals. Receiving means for receiving the terminal identification information having the information of the terminal identifier of the other terminal transmitted from the other terminal, and storing the terminal identifier of the other terminal obtained from all the terminal identification information received from the receiving means Other terminal identifier storage means, own terminal identifier storage means for storing a past terminal identifier of the own terminal, a terminal identifier other than the terminal identifier of the other terminal identifier storage means and the terminal identifier of the own terminal identifier storage means, And, among a plurality of terminal identifiers that can be used for communication set in advance,
And a self-terminal identifier setting means for setting one terminal identifier as an identifier of the self-terminal used from now.

The invention according to claim 2 is the communication control device according to claim 1, wherein said other terminal identifier storage means stores all terminal identifiers existing within a predetermined time.

According to a third aspect of the present invention, there is provided a communication control apparatus for a communication terminal which forms a group with one or more communication terminals specified from a group of communication terminals capable of communicating with each other and performs communication within the group. A group setting means for setting one or a plurality of specified communication terminals as a group, a group identifier storage means for storing a group identifier for identifying a currently used group, Own terminal group identifier storing means for storing a group identifier of a group; a group identifier other than the group identifier of the own terminal group identifier storing means and the group identifier of the group identifier storing means; Out of multiple group identifiers, the group of the own terminal that currently uses one group identifier As an identifier, a communication control apparatus, comprising the a group identifier setting means for assigning to the group set by said group setting means.

A fourth aspect of the present invention is the communication control apparatus according to the third aspect, wherein said group identifier storage means stores the number of times a group has been set.

According to a fifth aspect of the present invention, there is provided a communication control method for a communication terminal in a communication network system in which information can be exchanged between communication terminals. Receiving the terminal identification information having the information of the terminal identifier of the other terminal, the other terminal identifier storage step of storing the terminal identifier of the other terminal obtained from all terminal identification information received in the receiving step, The own terminal identifier storing step of storing the past terminal identifier of the own terminal, a terminal identifier other than the terminal identifier of the other terminal identifier storing step and the terminal identifier of the own terminal identifier storing step,
And, among a plurality of terminal identifiers that can be used for communication set in advance, an own terminal identifier setting step of setting one terminal identifier as an identifier of the own terminal used from now on,
A communication control method characterized by comprising:

According to a sixth aspect of the present invention, there is provided a communication control method for a communication terminal which forms a group with one or more communication terminals specified from a group of communication terminals capable of communicating with each other and performs communication within the group. A group setting step of setting one or a plurality of specified communication terminals as a group, a group identifier storage step of storing a group identifier for identifying a group currently used, A self-terminal group identifier storing step of storing a group identifier of a group; a group identifier other than the group identifier of the self-terminal group identifier storing step and the group identifier of the group identifier storing step; Out of multiple group identifiers As a group identifier of the terminal that is a communication control method, comprising the, and the group identifier setting step of assigning to the group set by said group setting step.

According to the first and fifth aspects of the present invention, an incorrect operation is caused by erroneously recognizing a current terminal identifier and a previously allocated terminal identifier without allocating an identifier previously assigned as an own terminal identifier. Can be prevented.

According to the second and sixth aspects of the present invention, not only the identifier assigned by the terminal itself but also an identifier different from all the identifiers assigned in the network within a predetermined time can be assigned.

According to the third aspect of the present invention, a group identifier previously assigned as a group identifier by a terminal in the past is not assigned, and a group identifier existing in the past and a current group identifier are erroneously recognized and data is transmitted to a different group. By doing so, or by receiving illegal data, illegal operations such as misrecognition of members in the group are prevented.

According to the fourth aspect of the present invention, a group identifier different from the group identifier set in the past can be assigned only by storing the number of times the terminal sets the group identifier.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIGS.

(Configuration) FIG. 1 is a block diagram of a communication terminal according to the present embodiment. The communication control unit 10 performs communication control with a user information processing unit 101 that executes a so-called application.
2.

The communication control unit 102 includes a transmitting unit 111, a receiving unit 112, a local terminal identifier storage unit 113, a remote terminal identifier storing and transmitting unit 114, and a local terminal identifier setting unit 115.

The user information processing section 101 is an information processing function section for executing an application.

The transmission section 111 is a transmission communication section for transmitting data via a transmission path, and transmits information requested by the own terminal identifier storage section 113 and the user information processing section 101.

The receiving unit 112 receives a signal transmitted through a transmission line and receives data.
The receiving unit 112 stores the received information in the other terminal identifier storage unit 1
14 and the user information processing unit 101.

The own terminal identifier storage unit 113 stores information on past terminal identifiers set by the own terminal identifier setting unit 115 and terminal identifier information currently set.

The other terminal identifier storage unit 114 stores the reception unit 11
2 is to acquire and store the terminal identifiers set in the vicinity from the information received by the terminal 2.

The own terminal identifier setting section 115 sets a terminal identifier not stored in the own terminal identifier storage section 113 and the other terminal identifier storage section 114 as an identifier of the own terminal.

(Method of Setting Terminal Identifier) Next, Embodiment 1
A method in which the own terminal identifier setting unit 115 sets a terminal identifier in the communication terminal of FIG.

In FIG. 2, terminals C1, C2, C4, C5,
There are six terminals C10 and Cx, and these terminals constitute a communication network capable of communicating with each other.

Each terminal regularly broadcasts its own terminal identifier as terminal identification information. Terminal Cx
The receiving unit 112 receives the terminal identification information of each terminal, and stores the terminal identifier already set in the network in the other terminal identifier storage unit 114 as shown in FIG.

The reception time shown in FIG. 3 is updated each time terminal identification information is received, and it is determined that communication with a terminal having a terminal identifier that is not updated for a certain period of time cannot be performed. Remove from.

1. First setting In order for the user information processing unit 101 to start data transmission, the own terminal identifier setting unit 1 in a case where a request for setting the terminal identifier of the own terminal is made to the own terminal identification setting unit 115.
The setting procedure of the 15 terminal identifiers will be described below.

First, the terminal identifier already used in the network is obtained from the other terminal identifier storage unit 114, and C
It recognizes that 1, C2, C4, C5, C10 are already in use.

The smallest terminal identifier among the vacant terminal identifiers, here, C3 is set as the terminal identifier of the own terminal, and the set terminal identifier is registered in the own terminal identifier storage unit 113. The setting of the terminal identifier may be the largest one or may be randomly selected.

Next, when the application no longer needs data communication, the user information processing unit 101
Sends a data communication stop request to the terminal identifier setting unit 115.

Upon receiving the data communication stop request, own terminal identifier setting section 115 stops transmitting the terminal identification information.

2. Second setting In order for the user information processing unit 101 to start transmitting data again, when the user terminal identification setting unit 115 requests the own terminal identifier setting unit 115 to set the terminal identifier of the own terminal, the own terminal identifier setting unit 11
The procedure for setting the terminal identifier of No. 5 is as follows.

As before, C1, C2, C4, C
5. Recognize that C10 is already used by another terminal.

Since the previously set C3 is registered in the own terminal identifier storage unit 113, C1, C2, C3, C3
The terminal identifier of the own terminal is selected from other than 4, C5, and C10. For example, also in this case, the smallest one is selected, and C6 is set.

The terminal identifier once registered in the own terminal identifier storage unit 113 may be reused by deleting it after a certain period of time.

In this way, even when continuous start / stop of data communication is requested, a terminal identifier similar to the previous terminal identifier is not set, so that the data for the previous application is not used. Erroneous reception of the communication terminal, it is possible to prevent malfunction of the application, and also to prevent other terminals from erroneously recognizing the same communication terminal because the identifier of the communication terminal of the previous time and that of the current time are different. Becomes possible.

3. Modification example However, it is possible to prevent the terminal identifier of the own terminal from being the same as the one previously set, but in the above method, the other terminal is not to be the same as the previously set terminal identifier. It is not possible.

For this reason, the other terminal identifier storage unit 114 stores
The terminal identifier of the terminal that did not receive the communication terminal identification information for a certain period of time or longer was deleted because it could not communicate with the terminal identifier. However, after a sufficiently long time had elapsed after the communication became impossible, it was deleted from the other terminal identifier storage unit 114. I do.

FIG. 4 shows an example of the other terminal identifier storage unit 114. When the attribute is "communicable", communication is possible, and when the attribute is "communication impossible", communication is not possible. In this case, it indicates a terminal identifier that needs to be excluded from the terminal identifier candidates of the own terminal.

In this way, even if the time at which communication is determined to be unavailable varies among terminals, the identifier of the communication terminal that has existed within the fixed time is different, so that data addressed to another terminal is received. As a result, it is possible to prevent erroneous recognition of a terminal immediately after communication has become impossible and a terminal that has just become communicable with another terminal.

Embodiment 2 Embodiment 2 of the present invention will be described with reference to FIG.

(Configuration) FIG. 5 is a block diagram of a communication terminal according to the present embodiment. The communication control unit 10 performs communication control with a user information processing unit 101 that executes a so-called application.
2.

Communication control section 102 includes transmitting section 111 and receiving section 112, own terminal identifier storing section 113, other terminal identifier storing and transmitting section 114, own terminal identifier setting section 115, and
Group setting unit 116 and group identifier storage unit 117
And a group identifier setting unit 118.

The user information processing unit 101 is an information processing function unit that executes an application.

The transmitting section 111 is a transmitting communication section for transmitting data via a transmission path, and has its own terminal identifier storing section 1
13 and the information requested by the user information processing unit 101.

The receiving unit 112 receives a signal transmitted through a transmission line and receives data.
The receiving unit 112 stores the received information in the other terminal identifier storage unit 1
14 and the user information processing unit 102.

The own terminal identifier storage unit 113 stores the information of the terminal identifier set by the own terminal identifier setting unit 115 so far and the currently set terminal identifier information.

The other terminal identifier storage unit 114 acquires a terminal identifier set in the vicinity from the information received by the receiving unit and stores it.

The own terminal identifier setting section 115 sets a terminal identifier not stored in the own terminal identifier storage section 113 and the other terminal identifier storage section 114 as an identifier of the own terminal.

The group setting unit 116 receives the request from the user information processing unit 101, and stores the other terminal identifier storage unit 114
The group is set from communication terminals capable of communication stored in the group.

The group identifier storage unit 117 stores the group identifier set by the group identifier setting unit 118 and the currently set group identifier.

The group identifier setting section 118 sets a group identifier not stored in the group identifier storage section 117 as an identifier of the group requested by the group setting section 116.

(Method of Setting Group Identifier) Next, a method of setting the group identifier by the group identifier setting unit 118 in the communication terminal of the second embodiment will be described with reference to the situation shown in FIG.

In FIG. 6, terminals C1, C2, C3, C4,
There are five terminals C5, and these terminals constitute a communication network capable of communicating with each other.

As in the first embodiment, each terminal periodically broadcasts its own terminal identifier as terminal identification information. For this reason, the communication terminal currently existing in the network is stored in the other terminal identifier storage unit 114.

For example, the terminal C1 is connected to C2, C3, C4,
It recognizes that it can communicate with C5.

Here, when there is a group setting request from the user information processing unit 101, the group setting unit 116
Determines whether communication with the requested communication terminal is possible and performs group setting.

The user information processing 101 of the terminal C1 is C1,
When a group setting request is made with C2 and C3, the group setting is permitted because all the terminals are included in the other terminal identification storage unit 114. At this time, if a terminal that cannot communicate is included, the group setting may be rejected, or the group may be set only by terminals that can communicate.

Next, in order to uniquely identify the group, the group identifier setting unit 118 sets a group identifier. As the group identifier, a group identifier that does not exist in the network and has not been used in the past is set. That is, the group identifier storage unit 11
7, a group identifier that does not exist is set, and when the group identifier is set, it is registered in the group identifier storage unit 117.

Since the group identifier is set by a plurality of terminals and there is a possibility that the same group identifier may be set at the same time, the group identifier is obtained by combining the terminal identifier with the identifier set by the group identifier setting unit 118. The identifier may be used as a group identifier, or an identifier set by the group identifier setting unit 118 may be added to the MAC address.

By doing so, it is possible to set a unique group identifier irrespective of the group identifier set by another terminal simply by storing the group identifier set by the own terminal. When setting and canceling of a group frequently occur, erroneous recognition of the previously set group and the currently set group can be prevented not only at the own terminal but also at other terminals.

Further, in the case where the group identifier is a group identifier by combining the terminal identifier with the identifier set by the group identifier setting unit 118 or the group identifier by combining the MAC address with the identifier set by the group identifier setting unit 118. The group identifier storage unit 117 stores the number of times the group has been set, and combines the set number with the terminal identifier or the MAC address to form a group identifier. It is possible to set a unique group identifier.

[0066]

According to the communication control apparatus of the first aspect of the present invention, the current terminal identifier and the previously assigned terminal identifier are erroneously recognized without allocating the identifier previously assigned as the own terminal identifier. Operation can be prevented from occurring.

In the communication control apparatus according to the second aspect of the present invention, not only the identifiers that have been assigned by the terminal itself but also identifiers different from all the identifiers assigned in the network within a predetermined time can be assigned.

In the communication control apparatus according to the third aspect of the present invention, the group identifier assigned by the terminal itself as a group identifier in the past is not assigned, and the group identifier that existed in the past and the current group identifier are erroneously recognized, and a different group is assigned. By transmitting data to the group or receiving data from a different group, illegal operations such as erroneous recognition of members in the group can be prevented.

In the communication control apparatus according to the fourth aspect of the present invention, only the number of times the terminal sets the group identifier is stored,
A group identifier different from the group identifier set in the past can be assigned.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a use situation of the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a communication situation between terminals according to the first embodiment of the present invention.

FIG. 4 is a diagram illustrating a communication situation between terminals according to the first embodiment of the present invention.

FIG. 5 is a configuration diagram of a second embodiment of the present invention.

FIG. 6 is a diagram illustrating a use situation of a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 ... User information processing part 102 ... Communication control part 111 ... Transmission part 112 ... Receiving part 113 ... Own terminal identifier storage part 114 ... Other terminal identifier storage part 115 ... Own terminal identifier setting part 116 ... Group setting part 117 ... Group identifier storage Part 118: group identifier setting part

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Shogo Yamaguchi 8-6-26 Motoyama Minami-cho, Higashinada-ku, Kobe-shi, Hyogo F-term in Kansai Research Center, Toshiba Corporation 5K030 GA11 JA07 JT09 KA02 LB05 MD10 5K034 AA05 DD03 FF02 5K067 AA26 DD17 EE02 EE25 HH21 HH23 9A001 BB03 BB06 CC02 CC08 JJ12 KK31 LL02 LL03

Claims (6)

[Claims] 1. A communication control device for a communication terminal in a communication network system in a communication network system capable of exchanging information between the communication terminals, the terminal being transmitted from one or more other terminals currently communicating. Receiving means for receiving terminal identification information having identifier information; other terminal identifier storage means for storing terminal identifiers of other terminals obtained from all terminal identification information received from the receiving means; Own terminal identifier storage means for storing the terminal identifier of the terminal identifier of the other terminal identifier storage means and a terminal identifier other than the terminal identifier of the own terminal identifier storage means,
And, from among a plurality of terminal identifiers that can be used for communication set in advance, own terminal identifier setting means for setting one terminal identifier as an identifier of the own terminal to be used from now on, Communication control device. 2. The communication control device according to claim 1, wherein said other terminal identifier storage means stores all terminal identifiers existing within a predetermined time. 3. A group comprising one or more communication terminals specified from a group of communication terminals capable of communicating with each other,
In a communication control device in a communication terminal performing communication within the group, a group setting means for setting one or a plurality of specified communication terminals as a group, and a group identifier for identifying a group currently used are stored. Group identifier storage means; own terminal group identifier storage means for storing a group identifier of a group to which the own terminal has belonged in the past; groups other than the group identifier of the own terminal group identifier storage means and the group identifier of the group identifier storage means A group to be assigned to the group set by the group setting means as an identifier and, among a plurality of available group identifiers set in advance, one group identifier as a group identifier of the own terminal to be used from now on And identifier setting means. Symptoms and the communication control device. 4. The communication control apparatus according to claim 3, wherein said group identifier storage means stores the number of times a group has been set. 5. A communication control method in a communication terminal in a communication network system in which information can be exchanged between communication terminals, wherein a terminal of another terminal transmitted from one or a plurality of other terminals currently communicating. A receiving step of receiving terminal identification information having information of an identifier; an other terminal identifier storing step of storing terminal identifiers of other terminals obtained from all the terminal identification information received in the receiving step; Own terminal identifier storing step of storing the terminal identifier of the terminal, and a terminal identifier other than the terminal identifier of the other terminal identifier storing step and the terminal identifier of the own terminal identifier storing step, and can be used for preset communication Local terminal identifier that sets one terminal identifier as the local terminal identifier to be used from the present out of multiple terminal identifiers A communication control method, comprising: a child setting step. 6. A group comprising one or more communication terminals specified from a group of communication terminals capable of communicating with each other,
In a communication control method in a communication terminal performing communication within the group, a group setting step of setting one or more specified communication terminals as a group, and a group identifier for identifying a group currently used are stored. A group identifier storing step, a local terminal group identifier storing step of storing a group identifier of a group to which the local terminal has belonged in the past, a group identifier other than the group identifier of the local terminal group identifier storing step and the group identifier of the group identifier storing step A group to be assigned to the group set by the group setting step, as an identifier, and among a plurality of available group identifiers set in advance, as one group identifier of the own terminal that currently uses one group identifier. Identifier setting A communication control method, comprising: