JPH0983573A - Communication controller and communication control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain highly reliable communication with less power among plural nearby communication terminals by transmitting a packet to which an ID is given and retransmitting the same packet when the number of reception recognition packets to be received cannot be received within a prescribed time. SOLUTION: An ID bestowal part 101 gives ID information of the packet to a transmission packet and a packet transmission part 102 broadcasts it. A packet reception part 103 receives the broadcasted packet and a received recognition packet number counting part 106 counts the number of the received recognition packets for the broadcasted packets. A packet retransmission part 108 retransmits the same packet when the number of the received recognition packets, which is to be received, cannot be received within a previously decided time. When the packets except for the received recognition packets are received, a received recognition packet generation part 109 generates and transmits the packets having information showing the ID information of the received packet and the received recognition packet.

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 information communication equipment.

[0002]

2. Description of the Related Art Conventionally, data transfer between computers having a communication function has been mainly one-to-one communication. The most typical example is when using a telephone line. In order to perform communication using a telephone line, go to a place where a telephone is installed and specify a telephone number of a communication partner known in advance.
Therefore, only a one-to-one communication with a person who has a telephone installed and whose telephone number is known in advance can be realized.
Even when using a mobile phone, the restrictions on the place of use are loose, but the restriction that communication with the base station must be possible and the restriction that the telephone number of the other party must be known in advance One communication limit remains.

Broadcasting is considered as one-to-many communication,
Basically, only one-way communication is supported. The Internet is a network dedicated to communication between computers. The technology that realizes communication on the Internet is TCP / IP. In TCP / IP, an IP address is used to identify a communication partner. An address represented by 32 bits is prepared for each communication terminal. However, in order to realize communication by TCP / IP, it is basically necessary for the communication terminals to be connected by a cable, so there are restrictions on the place of use. Moreover, it is necessary to know in advance the IP address of the person with whom you want to communicate. In recent years, a wireless LAN that realizes wireless computer-to-computer communication has relaxed restrictions on the place of use, but there remains a restriction that it is necessary to know in advance the IP address of the person with whom communication is desired.

IrDA is a technique for performing communication without knowing the address of the communication partner in advance. IrDA is a communication technology using infrared rays, and data can be transmitted by simply facing the infrared ray emitting / receiving section of its own communication terminal and the infrared ray emitting / emitting section of the communication partner. However, IrDA does not need to know the address of the other party in advance, but only one-to-one communication is supported, and the same information cannot be sent to multiple people at the same time.

As a means for solving the above problems, there is Japanese Patent Application No. 6-75757. In Japanese Patent Application No. 6-75757, each communication terminal voluntarily transmits information for identifying its own communication terminal. Then, each communication terminal recognizes a communicable terminal existing around itself based on the identification information transmitted from another communication terminal. Then, the specified communication terminals can form a group, and the same information can be multicast to the communication terminals in the group.

If the technology of Japanese Patent Application No. 6-75757 is used for a portable information device having a wireless communication function, fixed equipment is unnecessary, and N-to-N communication can be performed anytime, anywhere without knowing the address of the other party. It is possible to start.

[0007]

As described above, Japanese Patent Application No. 6-75757 does not require the fixed equipment conventionally required, and does not need to know the address of the communication partner in advance. It is a technology that enables communication with anyone, anytime, anywhere. This technique is considered to be more effective in combination with a portable information device having a wireless communication function.

However, in Japanese Patent Application No. 6-75757, since the communicable terminal is recognized by always transmitting the communication terminal identification information of itself or receiving the communication terminal identification information transmitted by another communication terminal, the data is transmitted. A lot of power is required besides the transmission of This is a serious problem in the case of portable information devices that can only carry a limited amount of power. Further, since the communication terminal identification information is transmitted even during the data transmission, the band for data transmission is limited. The above is the first problem.

The second problem is that each terminal voluntarily recognizes a communicable terminal based on the communication terminal identification information that each terminal voluntarily outputs. Therefore, even when it is desired to know whether or not it is possible to communicate with a particular partner, that partner can communicate. It is necessary to wait for a sufficient time to issue the terminal identification information and make a decision. In other words, when the recognition side is divided into the recognition side and the recognition side, since the recognition action is performed under the initiative of the recognition side, it is difficult to adaptively respond to the request of the recognition side, and there is a problem in efficiency. .

The third problem occurs when the identification information of its own communication terminal and the identification information of other communication terminals match. In this case, the third-party communication terminal cannot identify the two communication terminals, and recognizes that only one communication terminal exists despite the fact that two communication terminals actually exist. To be done. Also, it is not possible to specify only one of the communication terminals.

The first invention is made to solve the above-mentioned first problem, and an object thereof is to perform reliable communication between a plurality of proximity communication terminals with less power. is there.

The second invention is also made in order to solve the above-mentioned first problem, and an object thereof is to perform multicast between a plurality of proximity communication terminals with a smaller power and to a specific communication terminal. .

A third invention is made to solve the above-mentioned second problem, and its purpose is to recognize a communicable terminal more quickly and more accurately in response to a request. A fourth invention is made to solve the above-mentioned third problem, the purpose of which is held by each communication terminal,
This is to detect that the communication terminal identification information of its own and the identification information of another communication terminal match, and avoid duplication of the identification information.

[0014]

In order to solve the above-mentioned problems, the communication control apparatus according to the first aspect of the present invention provides an ID assigning means for assigning packet ID information to a transmission packet and a packet for broadcasting the packet to which the ID is assigned. Confirmation packet for setting the number of reception confirmation packets to be received for the transmission means, packet reception means for receiving the broadcasted packets, and transmission packets, and confirmation packet for counting the number of reception confirmation packets for the transmitted packets When the reception number counting means and the reception confirmation packets for the number to be received within the predetermined time cannot be received, when the retransmission means for retransmitting the same packet and the packet other than the reception confirmation packet are received, Indicates the ID information of the received packet and the reception confirmation packet And a reception confirmation packet generating means for generating a packet having the information.

In order to solve the above-mentioned problems, the communication control apparatus according to the second invention has one destination from the destination information receiving means for receiving the destination information indicating that a certain destination exists and the attribute of the destination and the received destination information. Alternatively, destination selecting means for selecting a plurality of destinations, information receiving means for receiving information transmitted to the selected destinations, information transmitting means for transmitting information to the selected destinations, and destination generating means for generating new destinations. And destination transmitting means for transmitting destination information.

In order to solve the above-mentioned problems, the communication control device according to the third invention sets its own terminal identification information setting means for setting its own terminal identification information for identifying its own communication terminal and an own terminal for holding the own terminal identification information. Terminal identification information storage means, presence confirmation information transmission means for transmitting presence confirmation information for recognizing communicable terminals existing around itself, and presence confirmation information reception for receiving presence confirmation information from other communication terminals If the means and the received presence confirmation information match, the presence confirmation response transmitting means for transmitting the presence confirmation response notifying that the matching terminal exists, and the presence confirmation transmitted by the own terminal or another terminal The communicable terminal recognizing means for recognizing the communicable terminals existing in the vicinity from the information and the presence confirmation response is the same as one or more communication terminals of the recognized communicable terminals. Has a group setting unit that sets as a group, and information transmitting means for transmitting the same information to the communication terminals belonging to the group set.

In order to solve the above-mentioned problems, the communication control device according to the fourth invention holds own terminal identification information setting means for setting own terminal identification information for identifying its own communication terminal and the own terminal identification information. Means, a means for holding the own terminal identification information, acquiring the own terminal identification information, and transmitting it as the existence information of the own terminal, and an existence information receiving means for receiving the existence information from another communication terminal, When the presence information and the self-terminal identification information match, it has a self-terminal identification information changing means for determining whether or not to change the self-terminal identification information and making the change if necessary.

The communication control device of the first invention will be described. The ID assigning means assigns packet ID information to the transmission packet. The packet transmitting means broadcasts the packet to which the ID has been added. The packet receiving means receives the broadcast packet. The number of reception confirmation packets to be received with respect to the packets transmitted by the confirmation packet reception number setting means is set.

The number of reception confirmation packets for the packets transmitted by the confirmation packet reception number counting means is counted.
When the number of reception confirmation packets which should be received within the predetermined time cannot be received by the retransmitting means, the same packet is retransmitted. When the reception confirmation packet generation means receives a packet other than the reception confirmation packet, it generates a packet having ID information of the reception packet and information indicating the reception confirmation packet.

The communication control device of the second invention will be described. The destination information receiving means receives the destination information indicating that a certain destination exists and the attribute of the destination.

One or more destinations are selected from the destination information received by the destination selecting means. The information receiving means receives the information transmitted to the selected destination. The information transmitting means transmits the information to the selected destination. The destination generation means generates a new destination. The destination transmitting means transmits the destination information.

The communication control device of the third invention will be described. The self-terminal identification information setting procedure sets self-terminal identification information for identifying its own communication terminal. The own terminal identification information storage means holds the own terminal identification information. The presence confirmation information transmitting means transmits the presence confirmation information in order to recognize the communicable terminals existing around itself.

The presence confirmation information receiving means receives the presence confirmation information from another communication terminal. When the received presence confirmation information and the received terminal identification information match, the presence confirmation response transmission means transmits a presence confirmation response informing that there is a matching terminal. The communicable terminal recognition means is
It recognizes communicable terminals existing in the vicinity from the existence confirmation information and the existence confirmation response transmitted from the own terminal or another terminal.

The group setting means sets one or more communication terminals among the recognized communicable terminals as the same group. The information transmitting means transmits the same information to the communication terminals belonging to the set group.

The communication control device of the fourth invention will be described. The own terminal identification information setting means sets own terminal identification information for identifying the own communication terminal.

From the means for holding the terminal identification information,
The own terminal identification information is acquired and transmitted as the existence information of the own terminal. The presence information receiving procedure receives the presence information from another communication terminal. When the received presence information and the self-terminal identification information match, the self-terminal identification information changing means determines whether or not to change the self-terminal identification information, and makes the change if necessary.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION

(Example 1-1) Example 1 of the first invention according to claim 1
-1 will be described with reference to FIG. The user information processing unit 100 is a part that executes a so-called application. The packet ID assigning unit 101 makes a group of information sent from the user information processing unit into one packet,
This is a part for attaching one ID to one packet. If the information sent from the user information processing unit is large, it is divided into a plurality of pieces of information and each packet is made into one packet.
You may attach D. Also, there are two types of packets, a packet having information sent from the user information processing unit and a confirmation packet notifying that a packet having information from the user information processing unit has been received. Turn on the flag. The packet with the ID and the flag indicating the type of packet is sent to the packet transmitting unit and the packet retransmitting unit. In addition, the reception confirmation packet number counting unit is notified of the ID of the packet to be transmitted.

The packet transmitting unit 102 is a unit that broadcasts the packet sent from the packet ID assigning unit, the packet retransmitting unit, or the reception confirmation packet generating unit to the network. The broadcasting method does not have to be particularly limited. A broadcast method may be used according to the sending network. For example, the receiving side may receive all the arrived packets without adding any destination header or the like, or the broadcast address may be set in advance and the transmitting side may add the broadcast address to the packet and transmit the packet. However, a method may be considered in which the receiving side receives only the packet having the broadcast address.

The packet receiving section 103 is a section for receiving a broadcasted packet arriving from the network, and sends the received packet to the received packet determining section. In the received packet determination unit 104, first, the packet transmitted by the packet reception unit is one of the above two types (the information packet carrying the information received from the user information processing unit and the reception confirmation packet for notifying that the information packet has been received). It is determined which packet is The determination is made by first checking the flag indicating the type of packet added to the packet. When the packet is an information packet, the reception confirmation packet generation unit is notified of the ID of the received packet. Further, the packet ID storage unit is inquired by sending the packet ID whether the packet has been transmitted and received in the past. When the packet ID storage unit is notified that the packet has not been transmitted / received in the past, the packet information is sent to the user information processing unit.

When the packet from the packet receiving unit is a reception confirmation packet, the ID of the packet to be confirmed is notified to the reception confirmation packet number counting unit. The packet ID storage unit 105 is a unit that stores the IDs of packets transmitted and received in the past. When receiving an inquiry from the received packet determination unit about whether the packet has been transmitted and received in the past together with the packet ID, the received packet determination unit compares it with the stored ID and notifies the received packet determination unit of whether the packet has already been stored. If the ID is not stored, it is stored. Further, the ID notified from the reception confirmation packet number counting unit is also stored.

The reception confirmation packet number counting unit 106 is a unit for counting the number of reception confirmation packets for the packet ID notified from the packet ID assigning unit. When the ID notified from the received packet determination unit and the ID notified from the packet ID assigning unit match, it is considered that the reception confirmation packet for the packet transmitted from the own terminal is received, and the number of reception confirmation packets is increased by one. . When the number of reception confirmation packets received reaches the number notified by the reception confirmation packet number setting unit, it is considered that the information can be transmitted to all the intended recipients, and the fact is notified to the packet retransmission unit together with the ID. On the other hand, if the specified number has not been reached even after a certain period of time, it is considered necessary to retransmit the packet, and the fact is notified to the packet retransmitting section together with the ID of the packet that needs to be retransmitted, and the reception counted up to that Reset the number of confirmation packets.

The reception confirmation packet number setting unit 107 is a unit for setting the number of reception confirmation packets for the transmitted packets. The number of reception confirmation packets may be input from the user information processing unit. The set number is notified to the reception confirmation packet number counting unit.

When the packet retransmitting unit 108 is notified of the ID of the packet that needs to be retransmitted, the packet retransmitting unit 108 sends the packet having the ID to the packet transmitting unit. When notified of the ID of a packet that does not need to be retransmitted, the packet having that ID is discarded.

The reception confirmation packet generator 109 is a portion for generating a reception confirmation packet for notifying another terminal that the information packet has been received. When notified of the ID of the information packet received from the reception packet determination unit, a packet having the notified ID and a flag indicating that the packet is a reception confirmation packet is generated. The generated packet is sent to the packet transmitter.

(Embodiment 1-2) An embodiment 1-2 of the first aspect of the present invention will be described with reference to FIG. Since only the packet ID acquisition unit 110 is different from the embodiment 1-1, only the part related to the packet ID acquisition unit will be described.

The packet ID acquisition section 110 is a section for acquiring an ID given to a packet to be transmitted. When the packet ID assigning unit receives the transmission packet from the user information processing unit, the packet ID assigning unit requests the packet ID obtaining unit for the ID assigned to the packet. The packet ID acquisition unit
When a packet ID is requested, the packet ID storage unit is inquired to search for a packet ID that has not been used for transmission and reception until now. Packet ID obtained as a result of search
To the packet ID assigning unit.

The packet ID search method is not particularly limited. For example, a packet ID candidate is selected by some method, the packet ID storage unit is inquired whether the selected ID has been used in the past, and if it is not used, the packet ID assignment unit is notified of the ID. If the ID has been used, the same procedure is repeated to select a new ID candidate.

Further, although the acquired packet ID has not been used in the past transmission / reception, the contents of the packet ID storage unit storing the packet ID used in the past can be cleared. It is also possible to keep it. For example, if the information can be cleared by an instruction from the user information processing unit, it is conceivable to clear the information portable terminal before starting transmission / reception of data. In this way, data can be transmitted and received semipermanently without exhaustion of the packet ID.

(Embodiment 2-1) An embodiment 2-1 of the second invention according to claim 3 will be described with reference to FIG. The user information processing unit 200 is a part that executes a so-called application.

The receiving section 201 is a section for receiving information arriving from the network. At least the following two types of information can be considered as the received information. The first is user-transmitted information sent from the user information processing unit. The other is destination information regarding the destination used for transmitting and receiving the user information. Distinguishing the type of information can be realized by adding a flag indicating whether it is user transmission information or destination information to the information to be transmitted. When the received information is the user transmission information, the received information is sent to the destination determination unit, and when the received information is the destination information, the received information is sent to the destination information storage unit.

The destination information storage section 202 is a section for storing the destination information sent from the receiving section. Destination selection unit 2
Reference numeral 03 is a part for selecting a destination used for transmitting and receiving user information. When the user information processing unit issues a request for selecting a destination, first, the destination information is read from the destination information storage unit and presented to the user information processing unit. The user information processing unit instructs the destination selection unit which destination to send / receive the user information from among the presented destination information. The number of destinations to be selected is not limited to one and may be two or more. When the destination is selected, the selected destination is notified to the destination determining unit and the destination assigning unit. It is also possible to select not only the destination to be transmitted / received but also the destination to stop using the destination that has been transmitted / received until then. For the communication with the user information processing unit for selection, the same method as the above method can be used. When it is selected as the destination whose use is stopped, the destination determining unit and the destination assigning unit are notified as the destination whose use is stopped.

The destination determination unit 204 sends to the user information processing unit only the user information sent to the destination notified from the destination selection unit among the user information sent from the reception unit. The destination to which the data is transmitted is determined based on the destination information given by the destination giving unit. Anything other than the selected destination can be discarded. Further, when the destination selecting unit is notified of the destination whose use is to be stopped, the information sent to the destination thereafter is discarded. When a plurality of destinations to be received are selected, the user information received is also notified to which destination the information is transmitted.

The destination assigning unit 205 adds information for transmitting the information sent from the user information processing unit to the destination notified from the destination selecting unit, to the user information. When there are a plurality of destinations notified from the destination selection unit, the user information processing unit also notifies the destination to which the user information is to be sent together with the user information. The user information to which the destination information has been added is sent to the transmitter.

The transmitting section 206 is a section for transmitting the user information sent from the destination assigning section or the destination information sent from the destination creating section to the network. Destination generation unit 2
Reference numeral 07 is a portion for generating new destination information in response to a request from the user information processing unit. The newly generated destination information is sent to the transmission unit so as to be transmitted to another terminal if necessary. For example, if the destination information is transmitted regularly, the existence of the destination can be always confirmed.
It can also be determined that the destination has been suspended when it is no longer sent. Alternatively, instead of transmitting it periodically, it may be transmitted in response to a request from another terminal.

An example of the destination information is shown in FIG. The address has a value such as a numerical value that is easy for the terminal to recognize. The value of the address field is used as the value assigned by the destination assigning unit for actual data transmission / reception or used for the determination by the destination determining unit. The destination name is a name that can be discriminated by humans, and the purpose of use of the destination can be easily understood from the name. The address set person's name is the name of the user who has selected this destination, and it can be known to whom the data will be sent when data is transmitted to this destination. Further, a destination generation time, a destination expiration date, etc. may be attached.

(Embodiment 2-2) A second embodiment 2-2 of the invention will be described with reference to FIG. The user information processing unit 200 is a part that executes a so-called application. The receiving unit 201 is a unit that receives information that arrives from the network. At least the following two types of information can be considered as the received information. The first is user-transmitted information sent from the user information processing unit. The other is destination information regarding the destination used for transmitting and receiving the user information. Distinguishing the type of information can be realized by adding a flag indicating whether it is user transmission information or destination information to the information to be transmitted. If the received information is user sent information,
The received information is sent to the destination determination unit, and when the received information is the destination information, the received information is sent to the destination information processing unit.

The destination selection section 203 is a section for selecting a destination used for transmitting and receiving user information. When the user information processing unit issues a request for selecting a destination, first, the destination information is read from the destination information processing unit and presented to the user information processing unit. The user information processing unit instructs the destination selection unit which destination to send / receive the user information from among the presented destination information. The number of destinations to be selected is not limited to one and may be two or more. When the destination is selected, the selected destination is notified to the destination determining unit and the destination assigning unit. It is also possible to select not only the destination to be transmitted / received but also the destination to stop using the destination that has been transmitted / received until then.
For the communication with the user information processing unit for selection, the same method as the above method can be used. When it is selected as the destination whose use is stopped, the destination determining unit and the destination assigning unit are notified as the destination whose use is stopped.

The destination determining unit 204 sends to the user information processing unit only the user information sent to the destination notified from the destination selecting unit among the user information sent from the receiving unit. The destination to which the data is transmitted is determined based on the destination information given by the destination giving unit. Anything other than the selected destination can be discarded. Further, when the destination selecting unit is notified of the destination whose use is to be stopped, the information sent to the destination thereafter is discarded. Also, when a plurality of destinations to be received are selected, the user division method that is received and the information transmitted to which destination are also notified.

The destination assigning unit 205 adds information for transmitting the information sent from the user information processing unit to the destination notified from the destination selecting unit, to the user information. When there are a plurality of destinations notified from the destination selection unit, the user information processing unit also notifies the user information that the user wants to send to the destination. The user information to which the destination information has been added is sent to the transmitter.

The transmitting section 206 is a section for transmitting the user information sent from the destination assigning section or the destination information sent from the destination creating section to the network. Destination generation unit 2
Reference numeral 07 is a portion for generating new destination information in response to a request from the user information processing unit. The newly generated destination information is sent to the destination information processing unit. Destination information processing unit 210
Is a portion for storing the destination information to be transmitted / received and preparing for transmitting the destination information if necessary. The destination information processing unit includes a destination information storage unit 211 and a destination information transmission drive unit 212.
have. Each will be described.

The destination information storage section 211 is a section for storing the destination information sent from the receiving section and the destination generating section. The destination information transmission drive unit 212 is a unit that sends, to the transmission unit, destination information that needs to be transmitted among the destination information stored in the destination information storage unit. The method of determining whether the destination information needs to be transmitted is not particularly limited. For example, one method is to periodically send the destination information generated by the user. If each communication terminal decides to periodically send the destination information generated by itself, each communication terminal can regularly receive the currently existing destination information.

When the communication terminal that has been transmitting certain destination information periodically ceases to transmit the destination information, for example, another communication terminal cannot receive the destination information that has been received so far. In that case, the destination information may be deleted and may be deleted from the destination information storage unit, or the transmission of the destination information may be started on behalf of the lost terminal in order to keep it alive.

(Embodiment 3-1) An embodiment 3-1 of the third aspect of the present invention will be described with reference to FIG. The user information processing unit 300 is a part that executes a so-called application. The own terminal identification information setting unit 301
This is a part for setting identification information of its own communication terminal. The setting method and the identification information to be set are not particularly limited. The simplest setting method is to use the input from the user information processing unit as identification information. Further, a method in which the return value of a function having the input from the user information processing unit as an argument is used as the identification information is also considered. The set own terminal identification information is sent to the own terminal identification information storage unit.

The own terminal identification information storage section 302 is a section for storing the own terminal identification information sent from the own terminal identification information setting section. The stored identification information is used for recognizing the presence of the communication terminal. Details will be described later.

The existence confirmation information generating section 303 is a section for generating information for inquiring whether or not the identification information of a certain communication terminal exists. The presence confirmation information includes communication terminal identification information to be inquired and information indicating that it is information for presence confirmation. The generated presence confirmation information is sent to the transmission unit and the presence confirmation information processing unit.

The transmitting section 304 is a section for transmitting the transmitted information to the network. The information to be transmitted includes the above-mentioned existence confirmation information, the below-described existence confirmation response, and user information to which a destination is added.

The receiving section 305 is a section for receiving the information transmitted to the network from the transmitting section of another communication terminal. The received information is sent to the received information discriminating unit. The reception information determination unit 306 is a unit that determines the type of information sent from the reception unit. There are three types of information sent from the receiving unit: presence confirmation information, presence confirmation response, and user information. Presence confirmation information is sent to the presence confirmation information processing unit,
The presence confirmation response is sent to the communicable terminal recognition unit, and the user information is sent to the destination determination unit.

The presence confirmation information processing unit 307 first extracts the identification information of the communication terminal which is the target of the presence confirmation inquiry from the sent presence confirmation information. The extracted identification information is compared with the identification information of the own terminal stored in the own terminal identification information storage. If they match, consider that you are inquiring about the existence of your terminal,
This is notified to the existence confirmation response generation unit. When the extracted identification information is different from the identification information of the own terminal, the extracted identification information is sent to the communicable terminal recognition unit.

The presence confirmation response generation unit 308 generates a presence confirmation response for notifying another terminal that the identification information for which the presence confirmation inquiry has been made and the identification information of its own communication terminal match. It is a part. It can be known from the presence confirmation information processing unit that the inquiry identification information and the self identification information match. Immediately after receiving the notification of the match between the inquiry identification information and the self identification information, the presence confirmation response is generated and sent to the transmission unit.

The communicable terminal recognizing section 309 is a section for recognizing currently communicable terminals around itself. When the presence confirmation information processing unit receives the identification information for which there is an inquiry about the presence, the communicable terminal recognition unit holds it for a certain period of time. Any method can be used to determine the retention time, and it may be determined in advance by an instruction from the user information processing unit, in which case a default value should be set when there is no instruction from the user information processing unit. Can also be considered. Further, it may be adaptively changed depending on the complexity of the network. If the network is busy, the holding time may be lengthened, and if the network is light, the holding time may be shortened. Alternatively,
There is also a method of holding until the notification of the next identification information is received from the existence confirmation information processing unit.

When the existence confirmation response is sent from the received information discriminating unit while holding the identification information, it is determined that the communication terminal having the held identification information exists, and the identification information is stored in the communicable terminal storage unit. send. If the presence confirmation response is not sent within the fixed time for holding the identification information, the held identification information is discarded.

The communicable terminal storage section 310 is a section for storing the identification information of the currently communicable terminal sent from the communicable terminal recognizing section. The group setting unit 311 is a unit that sets a set of communication terminals to which information is to be transmitted in a broadcast manner among the communicable terminals stored in the communicable terminal storage unit. The setting is basically performed according to an instruction from the user information processing section. The user information processing unit sends a group setting destination assigning unit 312 to the user information to be transmitted with information indicating to which group of the groups held in the group setting unit the information is to be transmitted.

The destination discriminating unit 313 is a unit for transmitting, to the user information processing unit, only the information transmitted to the group to which the own terminal belongs, out of the user information transmitted from the reception information discriminating unit. The information addressed to the group to which the terminal does not belong is discarded.

As described above, it is possible to recognize the communicable terminals around the user, form a group between the recognized communicable terminals, and transmit the information to the terminals belonging to the group by broadcast.

When there is no terminal that is recognized as a communicable terminal, it means that there is no existence confirmation response to the existence confirmation information of the terminal identification information stored in the communicable terminal storage. To be detected.

The existence confirmation information may not be generated while the existence confirmation information is received from another terminal. In that case, if there is no terminal around which the presence confirmation information is transmitted, whether or not the presence confirmation information is generated may be determined by some method. For example, each communication terminal that has detected that the presence confirmation information is no longer received waits for a certain random time before generating and transmitting the presence confirmation information.
Since the terminal that selects the shortest waiting time first generates and transmits the presence confirmation information, other terminals stop generating and transmitting the presence confirmation information.

(Embodiment 4-1) An embodiment 4-1 according to the fourth aspect of the present invention will be described with reference to the drawings. Figure 7
1 is a block diagram of a communication device according to an embodiment of the present invention, in which a user information processing unit 4 that executes a so-called application
01 and a communication control unit 402 that controls communication.

The terminal identification information transmission section 410 transmits the terminal identification information based on the request from the user information processing section 401 or the set value of the timer 415. The terminal identification information is
A terminal identifier for identifying each terminal is included.

The own terminal identifier storage section 411 stores the own terminal identifier set in the own terminal identifier setting portion 412.
The own terminal identifier setting unit 412 is the user information processing unit 40.
The self-determined terminal identifier is set by the request of 1 or the request of the terminal identifier comparison unit 413. Compare the set own terminal identifier with the received terminal identifier, and if there is a duplicate,
Set own terminal identifier.

The terminal identification information receiving section 414 receives the terminal identification information transmitted from another terminal and transfers it to the terminal identification information comparing section 415. The terminal identification information comparison unit 413 extracts the terminal identifier from the received terminal identification information and compares it with the terminal identifier of the own terminal stored in the own terminal identifier storage unit 411. If the comparison result is the same, and if the terminal identifier comparing unit 413 needs to change the terminal identifier of the own terminal, the own terminal identifier setting unit 41 sets the terminal identifier.
Request 2

Next, the processing when the comparison results of the terminal identification information comparing section 413 are the same will be described. If the comparison result is the same, it is a duplicate of the terminal identifier of another terminal,
Since it is impossible to distinguish between terminals with duplicate terminal identifiers,
The terminal which has detected the duplication of the terminal identifier changes the terminal identifier in its own terminal identifier setting unit 412.

Alternatively, the terminal priority is assigned to each terminal and added to the terminal identification information for transmission. Then, when the received terminal identification information has a high priority or the same, the terminal identifier setting unit 412 changes the terminal identifier, and when the freshness is low, it does not need to be changed. In addition to this, the time when the terminal identifier is set is added to the terminal identification information and transmitted, and it is determined whether or not the terminal identifier is changed according to the size of the set time.

(Embodiment 4-2) An embodiment 4-2 relating to the fourth aspect of the present invention will be described with reference to the drawings. FIG.
FIG. 5 is a block diagram of a communication device according to an embodiment of the present invention.
01 and a communication control unit 502 that controls communication.

The terminal identification information transmission section 520 transmits the terminal identification information based on the request from the user information processing section 501 or the set value of the timer 525. The terminal identification information is
It includes a terminal identifier for identifying each terminal and a specific terminal identifier for uniquely identifying each terminal.

The own terminal identifier storage unit 521 stores the own terminal identifier set by the own terminal identifier setting unit 22. The own terminal identifier setting unit 522 is the user information processing unit 501.
Or the request of the terminal identifier comparison unit 523,
Set the self-determined terminal identifier. The set own terminal identifier is compared with the received terminal identifier, and if there is an overlap, the own terminal identifier is set again.

The terminal identification information receiving section 524 receives the terminal identification information transmitted from another terminal and transfers it to the terminal identification information comparing section 525. The terminal identification information comparison unit 523 extracts the terminal identifier from the received terminal identification information and compares it with the terminal identifier of the own terminal stored in the own terminal identifier storage unit 521. When the comparison result is the same, when the terminal identifier comparison portion 523 needs to change the terminal identifier of the own terminal, the own terminal identifier setting unit 52 sets the terminal identifier.
Request 2 If the comparison result is the same, the received terminal identifier and the specific terminal identifier are stored in the other terminal identification information storage unit 52.
Hold at 6.

As described above, when the terminal receives the terminal identification information from each terminal, the table as shown in FIG. 9 can be held in the other terminal identification information storage section 526. Also,
By providing a priority for each terminal and including this in the terminal identification information for transmission, the table as shown in FIG. 10 can be held in the other terminal identification information storage unit 526. Alternatively, each terminal holds the set time of the terminal identifier, and the terminal identification information is added to the terminal identification information and transmitted, whereby the table as shown in FIG. 11 can be held in the other terminal identification information storage unit 516. it can.

Next, the processing when the comparison result is the same in the terminal identification information comparing section 523 will be described. If the comparison result is the same, it is a duplicate of the terminal identifier of another terminal,
Since it is impossible to distinguish between terminals with duplicate terminal identifiers,
The terminal which has detected the duplication of the terminal identifier changes the terminal identifier in its own terminal identifier setting unit 522.

Alternatively, if a priority is assigned to each terminal and the received terminal identification information has a high priority or the same, the terminal identifier setting unit 522 changes the terminal identifier,
If the priority is low, change it. Alternatively, it is determined whether to change the terminal identifier depending on the size of the specific terminal identifier. In addition to this, the time when the terminal identifier is set is added to the terminal identification information and transmitted, and it is determined whether or not the terminal identifier is changed according to the size of the set time.

When it is necessary to change the terminal identifier due to duplication, the own terminal identifier setting section 522 sets a new terminal identifier. At this time, the terminal identification information from another terminal is received for a certain period of time, and the terminal identifier received at this time is stored. From this stored terminal identifier, a terminal identifier that is not currently used is detected, and its own terminal identifier setting unit 522
Assigns an unused terminal identifier as a new terminal identifier. At this time, the transmission of information from the terminal is stopped until a new terminal identifier is set by the own terminal identification unit 522. Also, reception of information from other terminals may be stopped.

Alternatively, when it is necessary to change the terminal identifier due to duplication, the newly set terminal identifier may be assigned a free terminal identifier by using the other terminal identification information storage section 526.

(Embodiment 4-3) In the case of detecting the duplication of the terminal identifier in the same procedure as in the embodiment 4-1, a terminal identifier changing process and a user data transmitting method will be described.

When the duplicated terminal identifiers are detected, the own terminal identifier setting unit 522 sets a new terminal identifier.
At this time, the terminal identification information from another terminal is received for a certain period of time, and the terminal identifier received at this time is stored. From this stored terminal identifier, a terminal identifier that is not currently used is detected, and the own terminal identifier setting unit 522 allocates the unused terminal identifier as a new terminal identifier.

At this time, the transmission of information from the terminal is stopped until a new terminal identifier is set by the own terminal identifier setting section 522. (Embodiment 4-4) In the case of detecting the duplication of the terminal identifier by the same procedure as in the embodiment 4-1, a terminal identifier changing process and a user data transmitting method will be described.

When duplicated terminal identifiers are detected, the own terminal identifier setting unit 522 sets a new terminal identifier.
At this time, the terminal identification information from another terminal is received for a certain period of time, and the terminal identifier received at this time is stored. From this stored terminal identifier, a terminal identifier that is not currently used is detected, and the own terminal identifier setting unit 522 allocates the unused terminal identifier as a new terminal identifier.

At this time, transmission of information from the terminal and reception of information from other terminals are stopped until a new terminal identifier is set by the own terminal identifier setting unit 522. (Embodiment 4-5) Embodiment 4 relating to the fourth invention according to claim 9
5 will be described with reference to the drawings. FIG. 12 is a block diagram of a communication device according to an embodiment of the present invention, which includes a user information processing unit 601 that executes a so-called application and a communication control unit 602 that performs communication control.

Terminal identification information transmission section 610 transmits terminal identification information based on the request from user information processing section 601 and terminal identification information comparison section 613 or the set value of timer 615. The terminal identification information includes a terminal identifier that identifies each terminal.

The own terminal identifier storage unit 611 stores the own terminal identifier set by the own terminal identifier setting unit 612.
The own terminal identifier setting unit 612 is the user information processing unit 60.
The self-determined terminal identifier is set according to the request of No. 1 or the request of the terminal identifier comparing unit 613 and the terminal identification information receiving unit 614.

When the apparatus according to claims 6 to 8 is applied,
Compare the set own terminal identifier with the received terminal identifier,
If they overlap, the own terminal identifier can be set again.

The terminal identification information receiving unit 614 receives the packet transmitted from another terminal, passes the terminal identification information to the terminal identification information comparison unit 613, and sends the terminal identification information change request to the own terminal identification setting unit 612. I will hand it over.

The terminal identification information comparison unit 613 extracts the terminal identifier from the received terminal identification information and compares it with all the terminal identifiers of other terminals stored in the other terminal identifier storage unit 616. When the comparison results are the same and duplication is found, the terminal identification comparison unit 613 recognizes that the terminal identifier of the other terminal needs to be changed, and requests the terminal identification information change so as to instruct to change the terminal identifier. The terminal identification information transmitting unit 610 is instructed to send a packet to the corresponding terminal or to carry the corresponding terminal information and broadcast it. Then, the received terminal identification information is stored in the other terminal identifier storage unit 616.

Next, when the terminal identification information receiving unit 614 receives the terminal identification information change request packet and determines that the own terminal is applicable, it issues a terminal identification information change request to the own terminal identifier setting unit 612, and the terminal identifier of the own terminal. Enter the process of changing. In this case, since the terminal identifiers are duplicated, it is not possible to distinguish between terminals with duplicated terminal identifiers.
The terminal identifiers of all terminals having the same terminal identifier are simultaneously changed by the own terminal identifier setting unit 612. Further, this change can be made by using one of the priority, the size of the terminal identifier, and before and after the set time, as in the method described in the embodiment 4-2.

Here, after the terminal identifier is changed, if no duplication occurs even after a fixed time has passed, the identifier is used as its own identifier. At this time, a terminal identification information change completion packet may be broadcast to all terminals.

(Embodiment 4-6) An embodiment 4-6 relating to the fourth aspect of the present invention will be described with reference to the drawings. FIG. 13 is a block diagram of a communication device according to an embodiment of the present invention.
A user information processing unit 701 that executes a so-called application and a communication control unit 702 that controls communication are configured.

The terminal identification information transmission unit 710 transmits the terminal identification information and the user information based on the request from the user information processing unit 701 and the terminal identification information comparison unit 713 or the set value of the timer 715. The terminal identification information includes a terminal identifier that identifies each terminal.

The self terminal identifier storage unit 711 stores the self terminal identifier set by the self terminal identifier setting unit 712.
The own terminal identifier setting unit 712 is the user information processing unit 70.
The self-determined terminal identifier is set according to the request of No. 1 or the request of the terminal identifier comparing unit 713 and the terminal identification information receiving unit 714.

When the apparatus according to claims 6 to 8 is applied,
Compare the set own terminal identifier with the received terminal identifier,
If they overlap, the own terminal identifier can be set again.

The terminal identification information receiving unit 714 receives a packet transmitted from another terminal, passes user information to the user information processing unit 701, passes terminal identification information to the terminal identification information comparison unit 713, The identification information change request is passed to the own terminal identification setting unit 712. The terminal identification information comparison unit 713 extracts a terminal identifier from the received terminal identification information and compares it with all the terminal identifiers of other terminals stored in the other terminal identifier storage unit 716. If the comparison results are the same and a duplicate is found, the terminal identifier comparison unit 7
13 recognizes that the terminal identifier of another terminal needs to be changed, and transmits a terminal identification information change instruction packet for instructing to change the terminal identifier, with an instruction for broadcasting the terminal identification information change request packet with the relevant terminal information. Dispose in section 710. Then, the received terminal identification information is stored in the other terminal identifier storage unit 716.

Next, when the terminal identification information receiving unit 714 receives the terminal identification information change request packet and determines that the terminal itself is applicable, it issues a terminal identification information change request to the own terminal identifier setting unit 712, and the terminal identifier of the own terminal. Enter the process of changing. In this case, since the terminal identifiers are duplicated, it is not possible to distinguish between terminals with duplicated terminal identifiers.
The terminal identifiers are simultaneously changed by the own terminal identifier setting unit 712 in all terminals having the same terminal identifier. Further, this change can be made by using one of the priority, the size of the terminal identifier, and before and after the set time, as in the method described in the embodiment 4-2.

Here, after the terminal identifier has been changed, if no duplication occurs even after a certain period of time, the identifier is used as its own identifier. At this time, a terminal identification information change completion packet may be broadcast to all terminals.

When the terminal which has received the broadcasted terminal identification information change request packet detects that the terminal identifiers of other terminals are duplicated from the corresponding terminal information described in the packet, it is addressed to the corresponding terminal. Terminal identification information transmitter 7
Give 10 instructions. Here, not only the transfer of all packets can be prohibited, but also the transfer of user information and control information can be selectively prohibited.

The transfer prohibition is released by the terminal identification information receiving section 7
When 14 receives the terminal identification information change completion packet from the corresponding terminal, it instructs the terminal identification information transmitting unit 710 to cancel the transfer. Further, in the terminal itself, the terminal identification information received by the terminal identification information receiving unit 714 is passed to the terminal identification information comparing unit 713, and when the identifier of the corresponding terminal is changed and it is determined that there is no duplication, the transfer is canceled. The terminal identification information transmission unit 710
You can also instruct.

(Embodiment 4-7) An embodiment 4-7 according to the fourth aspect of the present invention will be described with reference to the drawings. FIG. 14 is a block diagram of a communication device according to an embodiment of the present invention.
A user information processing unit 801 that executes a so-called application and a communication control unit 802 that controls communication are configured.

The device configuration is the same as that of the embodiment 4-6.
When the terminal receiving the broadcasted terminal identification information change request packet detects that the terminal identifiers of other terminals are duplicated from the corresponding terminal information described in the packet, the packet from the corresponding terminal is detected. The terminal identification information receiving unit 814 is instructed so that the reception cannot be performed. Here, not only the reception of all packets can be prohibited, but also the transfer of user information and control information can be selectively prohibited.

The transfer prohibition is released by the terminal identification information receiving section 8
When 14 receives the terminal identification information change completion packet from the corresponding terminal, the reception prohibition is released. Also, in my terminal,
The terminal identification information received by the terminal identification information receiving unit 814 is passed to the terminal identification information comparison unit 813, and when the identifier of the corresponding terminal is changed and it is determined that there is no duplication, the reception prohibition can be released.

(Embodiment 4-8) An embodiment 4-8 according to the fourth aspect of the present invention will be described with reference to the drawings. FIG. 15 is a block diagram of a communication device according to an embodiment of the present invention, which includes a user information processing unit 901 that executes a so-called application and a communication control unit 902 that performs communication control.

The device configuration is the same as that of the embodiment 4-6.
When the terminal identification information receiving unit 914 receives the terminal identification information change request packet and determines that the terminal itself is applicable, it issues a terminal identification information change request to the own terminal identifier setting unit 912, and starts processing for changing the terminal identifier of the own terminal. . In this case, since the terminal identifiers are duplicated, it is not possible to distinguish the terminals with duplicated terminal identifiers. Therefore, the terminal identifier setting unit 912 of all terminals with duplicated terminal identifiers simultaneously changes the terminal identifiers. . In addition, this change is made in Example 4-
Similar to the method described in 2, it is possible to change the priority by using one of the priority, the size of the terminal identifier, and before and after the set time. Then, after the terminal identifier is changed, if the duplication does not occur even after a fixed time elapses, the identifier is used as its own identifier.

Upon receiving this terminal identification information change request packet and entering the process of changing the terminal identifier of the own terminal, the own terminal identifier setting section 912 stops the transmission of the information of this terminal, and the terminal identification information transmitting section 910. When a new terminal identifier is set by the own terminal identifier setting unit 922, the terminal identification information transmitting unit 910 is instructed to restart the transmission of the information of this terminal. When transmission is stopped, transfer of all packets can be selectively prohibited.

(Embodiment 4-9) An embodiment 4-9 according to the fourth aspect of the present invention will be described with reference to the drawings. FIG. 16 is a block diagram of a communication device according to an embodiment of the present invention.
A user information processing unit 1001 that executes a so-called application and a communication control unit 1002 that controls communication are configured.

The device configuration is the same as that of the embodiment 4-6.
When the terminal identification information receiving unit 1014 receives the terminal identification information change request packet and determines that the own terminal is applicable, it issues a terminal identification information change request to the own terminal identifier setting unit 1012,
The process for changing the terminal identifier of the own terminal starts. in this case,
Since the terminal identifiers are duplicated, it is not possible to distinguish the terminals with duplicated terminal identifiers. Therefore, the self-terminal identifier setting unit 1012 in all terminals with duplicated terminal identifiers.
To change the terminal identifier at the same time. Further, this change can be made by using one of the priority, the size of the terminal identifier, and before and after the set time, as in the method described in the embodiment 4-2. Then, after the terminal identifier is changed, if the duplication does not occur even after a fixed time elapses, the identifier is used as its own identifier.

Upon receiving this terminal identification information change request packet and entering the processing for changing the terminal identifier of the own terminal, the own terminal identifier setting section 1012 stops the reception of the information of this terminal by the terminal identification information receiving section 1014. Instruct. Alternatively, when the terminal identification information receiving unit 1014 receives the terminal identification information change request packet, it is possible to set the stop of the reception of the information of this terminal.

When a new terminal identifier is set by the own terminal identifier setting unit 1022, the terminal identification information receiving unit 1014 is instructed to restart the reception of the information of this terminal. When the reception is stopped, not only the reception of all packets but also the reception of user information and control information can be selectively prohibited.

(Embodiment 4-10) The embodiment 4-10 of the fourth aspect of the present invention will be described with reference to FIG. The transmission / reception of the presence recognition information and the presence confirmation response, and the processing for each are the same as those in the embodiment 3-1 and thus will be omitted.
The difference from the embodiment 3-1 is that the own terminal identification information changing unit 320.
Is newly added, so only the part related to the own terminal identification information changing unit will be described.

The own terminal identification information changing unit 320 detects that there is a communication terminal having the same identification information as the identification information of its own communication terminal and, if necessary, avoids duplication of the identification information of its own terminal. This is a part for changing the identification information. The presence confirmation information processing unit 307 extracts the identification information of the communication terminal that is the target of the presence inquiry from the presence confirmation information sent. The extracted identification information is compared with the identification information of the own terminal stored in the own terminal identification information storage unit.
If the two match, it is considered that the existence of the own terminal is inquired, and the fact is notified to the existence confirmation response generating section, and at the same time, the own terminal identification information changing section is also notified. When notified that the identification information of the own terminal and the identification information extracted by the existence confirmation information processing unit match, the own terminal identification information changing unit stores the notification for a certain period of time. The time for storing the notification may be the same as the time for which the communicable terminal recognition unit holds the identification information notified by the existence confirmation information processing unit.

When the received information is a presence confirmation response, the received information discriminating unit 306 sends it to the communicable terminal recognizing unit and the self terminal identifying information changing unit. When the presence confirmation response is sent while the notification that the identification information of the own terminal and the identification information extracted by the presence confirmation information processing unit match is stored in the own terminal identification information changing unit, It can be seen that there is another communication terminal having the same identification information as the communication terminal identification information. In that case, it is determined whether or not the identification information of the terminal itself needs to be changed. When it is determined that the change is necessary, the self-terminal identification information setting unit is instructed to reset the self-terminal identification information.

As a method of determining whether or not to change the own terminal identification information, for example, when it is detected that there is a communication terminal having the same identification information as the own communication terminal identification information, it can be changed. Alternatively, it may be determined whether or not to change the probability.

Upon receiving an instruction to reset the own terminal identification information from the own terminal identification information changing section, the own terminal identification information setting section 301 sets new own terminal identification information and notifies the own terminal identification information storage section. .

As described above, even if the same identification information is set between the adjacent communication terminals, it can be detected and avoided. Further, the following method can be considered as a method for efficiently detecting and avoiding duplication of identification information of communication terminals. When the presence confirmation information processing unit confirms that the target inquiring for confirmation of the presence is the identification information of the own terminal, the presence confirmation response generation unit and the own terminal identification information changing unit are notified. The presence confirmation response generation unit does not generate the presence confirmation response immediately after receiving the notification from the presence confirmation information processing unit and send it to the transmission unit, but wait for a certain period of time before generation. On the other hand, the self-terminal identification information changing unit receives a notification from the presence confirmation information processing unit, and then sends a presence confirmation response from the reception information discriminating unit within a certain period of time, the communication having the same identification information as that of the self terminal Detects the presence of a terminal. At this time, the self-terminal identification information setting unit is notified of the reset of the identification information, and the presence confirmation response generation unit is also notified of the resetting of the identification information of the own terminal. When the presence confirmation response generation unit receives the reset notification of the identification information of the own terminal, if the presence confirmation response generation waits, the generation is stopped.

According to this method, when a plurality of terminals among adjacent communication terminals have the same identification information, the existence confirmation response is first generated and the transmitting terminal uses the original identification information as it is. become. This saves the trouble of resetting the identification information. In addition, the number of presence confirmation responses sent to the network is reduced by the terminal waiting for generation of the presence confirmation response, and the number of presence confirmation responses sent to the network is reduced, thereby reducing network traffic.

(Embodiment 4-11) The embodiment 4-11 of the fourth aspect of the present invention will be described with reference to FIG.

The transmission / reception of the presence confirmation information and the presence confirmation response and the processing for each are the same as those in the embodiment 3-1 and therefore will be omitted. Example 4-? The major difference from the above is that the duplication information generation unit 330 is newly added. Therefore, only a portion related to the duplication information generation unit, a portion related to transmission / reception of duplication information and its processing will be described.

The duplication information generation section 330 is a portion for generating duplication information for notifying that there are a plurality of terminals having the same identification information. The duplication information is generated according to an instruction from the communicable terminal recognition unit. First, the process of instructing the duplication information generation unit to generate duplication information in the communicable terminal identification unit will be described.

The communication terminal recognizing unit, when receiving the identification information inquired of the presence extracted by the presence confirmation information processing unit, holds it for a certain period of time. When the reception information determination unit sends a presence confirmation response while holding the identification information, it is determined that there is a communication terminal having the held identification information, and the identification information is sent to the communicable terminal storage unit. However, the presence confirmation response is not limited to one when received while holding the identification information extracted by the presence confirmation information processing unit. When a plurality of existence confirmation responses are sent, the duplication information generation unit is instructed to generate duplication information, assuming that there are a plurality of communication terminals having the same identification information.

When the communicable terminal recognizing unit instructs the duplication information generation unit to generate duplication information, the duplication information generation unit generates information indicating that there are a plurality of communication terminals having the same identification information, and sends the information to the transmission unit.

The reception information discriminating unit sends the received duplication information to the self terminal identification information changing unit. Own terminal identification information changing unit 32
0 is a part that detects the existence of a communication terminal having the same identification information as the identification information of its own communication terminal and, if necessary, changes the identification information of its own terminal in order to avoid duplication of the identification information. The presence confirmation information processing unit 307 extracts the identification information of the communication terminal that is the target of the presence confirmation inquiry from the sent presence confirmation information. The extracted identification information is compared with the identification information of the own terminal stored in the own terminal identification information storage unit. If they match,
It is considered that the inquiry is about the existence of the own terminal, and the fact is notified to the existence confirmation response generation unit and also to the own terminal identification information changing unit. When notified that the identification information of the own terminal and the identification information extracted by the existence confirmation information processing unit match, the own terminal identification information changing unit stores the notification for a certain period of time. If duplicate information is sent from the received information discriminating unit during storage, it is known that there is another communication terminal having the same identification information as the identification information of its own communication terminal. In that case, it is determined whether or not the identification information of the terminal itself needs to be changed. When it is determined that the change is necessary, the self-terminal identification information setting unit is instructed to reset the self-terminal identification information.

[0126]

According to the communication control device of the first aspect of the present invention, information can be simultaneously sent to a communication device existing on the spot with a small amount of power without the trouble of previously setting an address of a communication partner between adjacent communication devices. It can be transmitted with high reliability.

With the communication control device of the second invention, it is possible to perform multicast with a small amount of power between adjacent communication devices without the trouble of setting the address of the communication partner in advance.

With the communication control device according to the third aspect of the present invention, the communicable terminal can be recognized quickly and accurately as needed, and data transmission or the like caused by a deviation from the actual recognition of the communicable terminal can be performed. It is possible to eliminate waste in.

With the communication control device according to the fourth aspect of the present invention, it is possible to detect and avoid that a plurality of communication terminals have the same identifier, and to transmit data between communication devices without making a mistake in the other party. You can

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment 1-1 of the first invention.

FIG. 2 is a configuration diagram showing an embodiment 1-2 of the first invention.

FIG. 3 is a configuration diagram showing an embodiment 2-1 of the second invention.

FIG. 4 is a configuration diagram showing an embodiment 2-2 of the second invention.

FIG. 5 shows an example of destination information of the second invention.

FIG. 6 is a configuration diagram showing an embodiment 3-1 of the third invention.

FIG. 7 is a configuration diagram of an embodiment 4-1 of the fourth invention.

FIG. 8 is a configuration diagram of an embodiment 4-2 of the fourth invention.

FIG. 9 is a configuration example of another terminal identification information storage unit in the embodiment 4-2 of the fourth invention.

FIG. 10 is a configuration example of another terminal identification information storage unit in the embodiment 4-2 of the fourth invention.

FIG. 11 is a configuration example of another terminal identification information storage unit in the embodiment 4-2 of the fourth invention.

FIG. 12 is a configuration diagram of an embodiment 4-5 of the fourth invention.

FIG. 13 is a configuration diagram of an embodiment 4-6 of the fourth invention.

FIG. 14 is a configuration diagram of an embodiment 4-7 of the fourth invention.

FIG. 15 is a configuration diagram of an embodiment 4-8 of the fourth invention.

FIG. 16 is a configuration diagram of an embodiment 4-9 of the fourth invention.

FIG. 17 is a configuration diagram showing an embodiment 4-10 of the fourth invention.

FIG. 18 is a configuration diagram showing an embodiment 4-11 of the fourth invention.

[Explanation of symbols]

 100 ... User information processing 101 ... Packet ID assigning unit 102 ... Packet transmitting unit 103 ... Packet receiving unit 104 ... Reception packet determination unit 105 ... Packet ID storage unit 106 ... Reception confirmation packet number counting unit 107 ... Reception confirmation packet number setting unit 108 ... packet retransmitting unit 109 ... reception confirmation packet generating unit 110 ... packet ID acquiring unit 200 ... user information processing unit 201 ... receiving unit 202 ... destination information storing unit 203 ... destination selecting unit 204 ... destination determining unit 205 ... destination assigning unit 206 ... Sending unit 207 ... Destination generating unit 210 ... Destination information processing unit 211 ... Destination information storage unit 212 ... Destination information driving unit 300 ... User information processing unit 301 ... Own terminal identification information setting unit 302 ... Own terminal identification information storage unit 303 ... Existence Confirmation information generation unit 304 ... Transmission unit 305 ... Reception unit 306 ... Reception information determination unit 307 ... Existence confirmation information processing unit 308 ... Existence confirmation response generation unit 309 ... Communicable terminal recognition unit 310 ... Communicable terminal storage unit 311 ... Group setting unit 312 ... Destination assigning unit 313 ... Destination determination unit 320 ... Own terminal identification information changing unit 330 ... Duplicate information generating unit 401 ... User information processing unit 402 ... Communication control unit 410 ... Terminal identification information transmitting unit 411 ... Own terminal identifier storage unit 412 ... Own terminal identifier setting unit 413 ... Terminal identifier comparing unit 414 ... Terminal identification information receiving unit 415 ... Timer 501 ... User information processing unit 502 ... Communication control unit 520 ... Terminal identification information transmitting unit 521 ... Own terminal identifier storage unit 522 ... Own terminal identifier setting unit 523 ... Terminal identifier comparing unit 524 ... Terminal identification information receiving unit 525 ... Timer 526 ... Other terminal identification information storage unit 601 ... User information Processing unit 602 ... Communication control unit 610 ... Terminal identification information transmission unit 611 ... Own terminal identifier storage unit 612 ... Own terminal identifier setting unit 613 ... Terminal identifier comparison unit 614 ... Terminal identification information receiving unit 615 ... Timer 616 ... Other terminal identification information Storage unit 701 ... User information processing unit 702 ... Communication control unit 710 ... Terminal identification information transmission unit 711 ... Own terminal identifier storage unit 712 ... Own terminal identifier setting unit 713 ... Terminal identifier comparison unit 714 ... Terminal identification information receiving unit 715 ... Timer 716 ... Other terminal identifier storage unit 801 ... User information processing unit 802 ... Communication control unit 810 ... Terminal identification information transmission unit 811 ... Own terminal identifier storage unit 812 ... Own terminal identifier setting unit 813 ... Terminal identifier comparison unit 814 ... Terminal identification information Reception unit 815 ... Timer 816 ... Other terminal identifier storage unit 901 ... User information processing unit 90 ... communication control unit 910 ... terminal identification information transmission unit 911 ... self terminal identifier storage unit 912 ... self terminal identifier setting unit 913 ... terminal identifier comparison unit 914 ... terminal identification information reception unit 915 ... timer 916 ... other terminal identifier storage unit 1001 ... User information processing unit 1002 ... Communication control unit 1010 ... Terminal identification information transmission unit 1011 ... Own terminal identifier storage unit 1012 ... Own terminal identifier setting unit 1013 ... Terminal identifier comparison unit 1014 ... Terminal identification information receiving unit 1015 ... Timer 1016 ... Other terminal Identifier storage section

Claims (15)

[Claims] 1. An ID assigning means for assigning packet ID information to a transmitted packet, a packet transmitting means for broadcasting a packet to which an ID is assigned, a packet receiving means for receiving the broadcasted packet, and a transmitted packet. Confirmation packet reception number setting means for setting the number of reception confirmation packets to be received, confirmation packet reception number counting means for counting the number of reception confirmation packets for the transmitted packets, and the number to be received within a predetermined time Minute reception confirmation packet cannot be received, a resending means for resending the same packet,
When a packet other than the reception confirmation packet is received, it has a reception confirmation packet generating means for generating a packet having ID information of the received packet and information indicating the reception confirmation packet, and transmits the packet to which the ID is added. Then, the communication control device is characterized in that the number of reception confirmation packets received for the packet having the ID is counted and the same packet is retransmitted when the number is less than a predetermined number. 2. IDs of packets received and transmitted in the past
I for determining an ID based on the packet ID storage means for storing
The communication control device according to claim 1, further comprising a D determining unit, capable of specifying a transmitted / received packet. 3. A destination information receiving means for receiving destination information indicating that a certain destination exists and an attribute of the destination, and a destination selecting means for selecting one or more destinations from the received destination information and the selected destination. The information transmission means for receiving the information transmitted to the destination, the information transmission means for transmitting the information to the selected destination, the destination generation means for generating the new destination, and the destination transmission means for transmitting the destination information. Destination information, select one or more destinations, receive the information sent to the selected destinations, create a new destination if necessary, and send the existence of that destination and the attributes of the destination. And a communication control device. 4. A destination information receiving means for receiving destination information indicating that a certain destination exists and an attribute of the destination, and a destination selecting means for selecting one or more destinations from the received destination information and the selected destination. Information receiving means for receiving the information transmitted to the destination, information transmitting means for transmitting information to the selected destination, means for generating a new destination, and when a new destination is generated, or destination information of the selected destination Alternatively, when the information to the selected destination cannot be received for a certain period of time, it has a destination information transmission determining means for determining whether to transmit the destination information and a means for transmitting the destination information based on the determination, Destination information, select one or more destinations, receive the information sent to the selected destinations, create a new destination if necessary, and determine whether to send the destination information. And a communication control apparatus and transmits a presence and destination attributes of the destination based on the determination result. 5. A self-terminal identification information setting means for setting self-terminal identification information for identifying a self-communication terminal, a self-terminal identification information storage means for holding the self-terminal identification information, and communication existing around the self. The presence confirmation information transmitting means for transmitting the presence confirmation information for recognizing the terminal, the presence confirmation information receiving means for receiving the presence confirmation information from another communication terminal, the received presence confirmation information and the own terminal identification information are If there is a match, the presence confirmation response transmitting means for transmitting a presence confirmation response notifying that the matching terminal exists, and the presence confirmation information and the presence confirmation response transmitted from the own terminal or another terminal exist in the vicinity. A communicable terminal recognizing means for recognizing a communicable terminal and a group setting means for setting one or a plurality of communication terminals among the recognized communicable terminals as the same group. , Having information transmitting means for transmitting the same information to the communication terminals belonging to the set group, setting and storing the identification information of the own terminal, transmitting the existence confirmation information of the communicable terminal, and the existence for the existence confirmation information When the confirmation response is received, the presence confirmation response is transmitted when the presence confirmation information and the stored identification information of the own terminal match, and the communicable terminal is recognized from the presence confirmation information and the presence confirmation response, and the recognized communicable terminal One or a plurality of communication terminals are set as a group, and the same information is transmitted to the communication terminals belonging to the set group, and a communication control method. 6. A self-terminal identification information setting means for setting self-terminal identification information for identifying its own communication terminal, a means for holding the self-terminal identification information, and a means for holding the self-terminal identification information, When the terminal identification information is obtained and transmitted as the presence information of the own terminal, the presence information receiving means for receiving the presence information from another communication terminal, and the received presence information and the own terminal identification information match each other. Has its own terminal identification information changing means for determining whether or not to change its own terminal identification information and, if necessary, changing the own terminal identification information. If the own terminal identification information and the terminal identification information of another terminal are duplicated, A communication control device for avoiding duplication of terminal identification information in a terminal. 7. The transmission of information is stopped after the self-terminal identification information changing means determines that the self-terminal identification information needs to be changed until the setting of new self-terminal identification information is completed. The communication control device according to claim 6. 8. The transmission / reception of information is stopped after the own terminal identification information changing means determines that the own terminal identification information needs to be changed, until the setting of new own terminal identification information is completed. The communication control device according to claim 6. 9. A self-terminal identification information setting means for setting self-terminal identification information for identifying its own communication terminal, a means for holding the self-terminal identification information, and a means for holding the self-terminal identification information, A means for acquiring the terminal identification information and transmitting it as the presence information of the own terminal, a presence information receiving means for receiving the presence information from another communication terminal, a means for holding the received presence information, and the received presence information. The terminal identification information duplication means for determining whether or not the received terminal identification information is duplicated based on the information from the means for holding the A means for transmitting a notification, a duplication information receiving means for receiving a duplication notification of terminal identification information from another communication terminal, and whether or not to change the self-terminal identification information based on the received duplication notification of the terminal identification information. It has its own terminal identification information changing means for changing the terminal identification information if necessary, and gives duplicate notification of the terminal identification information of other terminals detected by the own terminal, and each terminal receiving the duplicate notification duplicates the terminal identification information. A communication control device characterized by avoiding. 10. The communication control device according to claim 9, wherein the terminal identification information duplication notifying means stops transmission of information to terminals whose terminal identification information is duplicated. 11. The communication control apparatus according to claim 9, wherein the terminal identification information duplication notifying means suspends transmission and reception of information with respect to terminals with duplicated terminal identification information. 12. The information transmission is stopped after the own terminal identification information changing means determines that the own terminal identification information needs to be changed until the setting of new own terminal identification information is completed. The communication control device according to claim 9. 13. The information transmission / reception is stopped after the self-terminal identification information changing means determines that the self-terminal identification information needs to be changed until the setting of new self-terminal identification information is completed. The communication control device according to claim 9. 14. Self-terminal identification information setting means for setting self-terminal identification information for identifying a self-communication terminal, self-terminal identification information storage means for holding the self-terminal identification information, and communication existing around the self The presence confirmation information transmitting means for transmitting the presence confirmation information for recognizing the terminal, the presence confirmation information receiving means for receiving the presence confirmation information from another communication terminal, the received presence confirmation information and the own terminal identification information are If they match, the presence confirmation response transmitting means for transmitting the presence confirmation response notifying that there is a matching terminal, the received presence confirmation information and the self-terminal identification information match, and further,
When a presence confirmation response from the other terminal for the same presence confirmation information is received, it is determined whether or not to change the own terminal identification information, and if necessary, the own terminal identification information changing means is included. A communication control device, characterized in that when the own terminal identification information and the terminal identification information of another terminal are duplicated, the duplication of the terminal identification information is avoided in each terminal. 15. A self-terminal identification information setting means for setting self-terminal identification information for identifying a self-communication terminal, a self-terminal identification information storage means for holding the self-terminal identification information, and communication existing around the self The presence confirmation information transmitting means for transmitting the presence confirmation information for recognizing the terminal, the presence confirmation information receiving means for receiving the presence confirmation information from another communication terminal, the received presence confirmation information and the own terminal identification information are When there is a match, the presence confirmation response transmitting means for transmitting a presence confirmation response notifying that there is a matching terminal and the presence confirmation response from a plurality of other terminals for the same presence confirmation information are received. A means for transmitting a terminal identification information duplication notification, a duplication information receiving means for receiving a terminal identification information duplication notification from another communication terminal, and a self-terminal identification based on the received terminal identification information duplication notification. Determining whether or not to change the information,
It has its own terminal identification information changing means for changing it if necessary, and notifies the terminal identification information of other terminals detected by the own terminal to avoid duplication of the terminal identification information. A communication control device characterized by the above.