JP2013021515A - Portable terminal, portable terminal control method, and portable terminal control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly acquire an incoming call while reducing power consumption.SOLUTION: A portable terminal includes a peripheral terminal recognition part, a reception order determination part, an incoming call notification reception part, and an incoming call notification forwarding part. The peripheral terminal recognition part recognizes peripheral terminals, which are other portable terminals existing around the own terminal, within a plurality of portable terminals in a cell of an identical base station. The reception order determination part determines an order to receive incoming call notification from the base station by the peripheral terminals which are recognized by the peripheral terminal recognition part and the own terminal. The incoming call notification reception part receives an incoming call notification from the base station in reception order determined by the reception order determination part. The incoming call notification forwarding part forwards an incoming call notification to a destination peripheral terminal if a destination of an incoming call notification received by the incoming call notification reception part is within the peripheral terminals.

Description

  The present invention relates to a mobile terminal, a mobile terminal control method, and a mobile terminal control program.

  Conventionally, in a portable terminal such as a cellular phone, in order to reduce power consumption, an incoming call notification from a base station is intermittently received during standby. Such a mobile terminal receives an incoming call notification from the base station at a predetermined cycle during standby. Then, when receiving the incoming call notification, the mobile terminal determines whether or not the destination of the received incoming call notification is its own terminal. Then, when the destination of the incoming notification is its own terminal, the portable terminal sends a response to the incoming notification to the base station. Thereby, the link between a portable terminal and a base station is established, and the user of a portable terminal can start the telephone call with respect to an incoming call notification.

JP 2000-341755 A JP 2005-354634 A

  By the way, in the above-described conventional technology, it is not considered to quickly obtain an incoming notification while reducing power consumption.

  That is, in the above-described prior art, the period for receiving the incoming notification from the base station is constant, and power for performing wireless communication with the base station is consumed each time this period arrives. Here, in order to further suppress the power consumption, it is conceivable to extend the period for receiving the incoming notification from the base station. However, if the period for receiving the incoming notification from the base station is extended, reception of the incoming notification may be delayed and the incoming notification may not be acquired quickly. That is, with the above-described conventional technology, it is difficult to quickly obtain an incoming call notification while reducing power consumption.

  The disclosed technology has been made in view of the above, and provides a mobile terminal, a mobile terminal control method, and a mobile terminal control program capable of quickly acquiring an incoming call notification while reducing power consumption. Objective.

  The mobile terminal disclosed in the present application includes a peripheral terminal recognition unit, a reception order determination unit, an incoming notification reception unit, and an incoming notification transfer unit. The peripheral terminal recognizing unit recognizes peripheral terminals that are other mobile terminals existing around the own terminal among a plurality of mobile terminals existing in the cell of the same base station. The reception order determination unit determines a reception order in which the peripheral terminal recognized by the peripheral terminal recognition unit and the terminal itself receive incoming notifications from the base station in order. The incoming call notification receiving unit receives the incoming call notification from the base station in the receiving order determined by the receiving order determining unit. The incoming call notification transfer unit transfers the incoming call notification to the peripheral terminal as the incoming call destination when the destination of the incoming call notification received by the incoming call notification receiving unit is the peripheral terminal.

  According to one aspect of the mobile terminal disclosed in the present application, it is possible to quickly obtain an incoming call notification while reducing power consumption.

FIG. 1 is a diagram for explaining a configuration example of a wireless communication system including a mobile terminal according to the present embodiment. FIG. 2 is a diagram illustrating a configuration example of the mobile terminal according to the present embodiment. FIG. 3 is a diagram illustrating an example of the terminal group information table. FIG. 4 is a flowchart illustrating the processing procedure of the main processing regarding the transfer of the incoming notification by the mobile terminal according to the present embodiment. FIG. 5 is a flowchart illustrating the processing procedure of the group formation processing of the mobile terminal according to the present embodiment. FIG. 6 is a flowchart illustrating the processing procedure of the peripheral terminal response reception process of the mobile terminal according to the present embodiment. FIG. 7 is a flowchart illustrating the processing procedure of the group reception process of the mobile terminal according to the present embodiment. FIG. 8 is a flowchart illustrating the processing procedure of the group notification processing of the mobile terminal according to the present embodiment. FIG. 9 is a flowchart illustrating the processing procedure of the group configuration change process of the mobile terminal according to the present embodiment. FIG. 10 is a diagram illustrating a configuration example of power-off / group leave notification. FIG. 11 is a diagram illustrating a configuration example of the peripheral terminal search notification. FIG. 12 is a diagram illustrating a configuration example of a peripheral terminal response. FIG. 13 is a diagram illustrating a configuration example of reception order notification. FIG. 14 is a diagram illustrating a configuration example of the encryption key exchange notification. FIG. 15 is a diagram illustrating a configuration example of the IMSI exchange notification. FIG. 16 is a diagram illustrating a configuration example of an incoming call notification. FIG. 17 is a diagram illustrating a configuration example of an incoming call notification. FIG. 18 is a diagram illustrating a configuration example of the Ack notification. FIG. 19 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 20 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 21 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 22 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 23 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 24 is a diagram for explaining an application example of the mobile terminal according to the present embodiment. FIG. 25 is a hardware configuration diagram of a mobile terminal that executes the mobile terminal control program.

  Embodiments of a mobile terminal, a mobile terminal control method, and a mobile terminal control program disclosed in the present application will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

  FIG. 1 is a diagram for explaining a configuration example of a wireless communication system including a mobile terminal according to the present embodiment. As shown in FIG. 1, the wireless communication system in the present embodiment includes a base station 10 and mobile terminals 100a to 100n.

  The base station 10 is a device for performing wireless communication with the mobile terminals 100a to 100n, and forms a cell 10a that covers a range in which wireless communication can be performed. The base station 10 performs wireless communication with the mobile terminals 100a to 100n located in the cell 10a. For example, when the base station 10 receives an incoming call notification from the host device, the base station 10 transfers the received incoming call notification to the mobile terminals 100a to 100n.

  The mobile terminals 100a to 100n are a plurality of mobile terminals located in the cell 10a of the same base station 10, and are, for example, mobile phones. The mobile terminals 100 a to 100 n perform wireless communication with the base station 10. For example, the mobile terminals 100a to 100n receive an incoming call notification from the base station 10 at a predetermined cycle.

  The mobile terminals 100a to 100n according to the present embodiment form a terminal group with peripheral terminals that are other mobile terminals existing around the terminal. Here, the terminal group refers to a group to which a plurality of mobile terminals that receive incoming notifications from the base station in order and transfer the received incoming notifications to each other belong. In the example illustrated in FIG. 1, it is assumed that the mobile terminals 100a to 100c among the mobile terminals 100a to 100n form the same terminal group.

  Here, a process in which the mobile terminals 100a to 100c form a terminal group and transfer an incoming call notification will be described. In the example illustrated in FIG. 1, the mobile terminals 100a to 100c are assumed to exist within a short-range wireless communication area.

  In such a case, the mobile terminal 100a uses the mobile terminals 100b and 100c existing around the terminal (mobile terminal 100a) among the plurality of mobile terminals 100a to 100n located in the cell 10a of the same base station 10 as peripheral terminals. Recognize as Accordingly, a terminal group to which the mobile terminals 100b and 100c, which are peripheral terminals, and the mobile terminal 100a belong is formed.

  For example, the mobile terminal 100a recognizes the mobile terminals 100b and 100c as peripheral terminals using short-range wireless communication. Similarly, the mobile terminal 100b recognizes the mobile terminals 100a and 100c existing around the terminal (mobile terminal 100b) as the peripheral terminals by using short-range wireless communication. Moreover, the portable terminal 100c recognizes the portable terminals 100a and 100b existing around the terminal (the portable terminal 100c) as the peripheral terminals using the short-range wireless communication.

  Then, the mobile terminal 100a determines the reception order in which the mobile terminals 100b and 100c belonging to the terminal group and the mobile terminal 100a receive the incoming notifications from the base station 10 in order. For example, the mobile terminal 100a determines a reception order in which the mobile terminals 100a, 100b, and 100c are first, second, and third, respectively. The determined reception order is shared among the mobile terminals 100a to 100c belonging to the terminal group.

  Then, the mobile terminals 100a to 100c receive the incoming notification from the base station 10 in the determined reception order. For example, the mobile terminal 100a first receives an incoming notification from the base station 10, while the mobile terminals 100b and 100c stop receiving incoming notifications from the base station 10. Next, the mobile terminal 100b receives the incoming notification from the base station 10 second, while the mobile terminals 100a and 100c stop receiving the incoming notification from the base station 10. Next, the mobile terminal 100c receives the incoming notification from the base station 10 third, while the mobile terminals 100a and 100b stop receiving the incoming notification from the base station 10.

  Then, when the destination of the received incoming notification is a peripheral terminal, the mobile terminals 100a to 100c transfer the incoming notification to the peripheral terminal that is the destination. For example, when the destination of the received incoming notification is the mobile terminal 100b as the peripheral terminal, the mobile terminal 100a transfers the incoming notification to the mobile terminal 100b that is the destination.

  As described above, the mobile terminals 100a to 100c recognize the peripheral terminals existing around the terminal, receive the incoming notifications from the base station 10 in order in cooperation with the recognized peripheral terminals, and receive the incoming notifications. When the destination is a peripheral terminal, the incoming call notification is transferred to the peripheral terminal that is the destination. For this reason, when the peripheral terminals receive the incoming notification from the base station 10, the mobile terminals 100a to 100c can stop receiving the incoming notification by the own terminal, and perform wireless communication with the base station. Electric power can be reduced. In addition, since the mobile terminals 100a to 100c can transfer the received incoming notifications to each other, reception of the incoming notification is not delayed. That is, the mobile terminals 100a to 100c can quickly acquire the incoming call notification while reducing power consumption.

  Next, the configuration of the mobile terminal according to the present embodiment will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration example of the mobile terminal 100 according to the present embodiment. Note that the mobile terminal 100 illustrated in FIG. 2 corresponds to the mobile terminals 100a to 100n illustrated in FIG. 2 illustrates an example in which the mobile terminal 100 performs short-range wireless communication based on the Bluetooth (registered trademark) standard. As illustrated in FIG. 2, the mobile terminal 100 includes an input unit 110, an output unit 120, a wireless communication unit 130, a short-range wireless communication unit 140, a storage unit 150, and a control unit 160.

  The input unit 110 is an input device for inputting various information and operation instructions, and is, for example, a numeric keypad or a touch panel for inputting numbers and characters. The output unit 120 is an output device that outputs various types of information, and is, for example, a liquid crystal display or a speaker.

  The wireless communication unit 130 performs wireless communication with the base station 10. For example, the wireless communication unit 130 is a baseband processor or the like that performs processing related to communication and telephone calls in W-CDMA (Wideband Code Division Multiple Access).

  The short-range wireless communication unit 140 periodically performs short-range communication with other mobile terminals. The wireless method by the short-range wireless communication unit 140 may be any standard as long as it is a short-range communication standard that consumes less power than the communication standard of the wireless communication unit 130. For example, the short-range wireless communication unit 140 performs short-range wireless communication based on standards such as Bluetooth (registered trademark) and RFID (Radio Frequency IDentification). In the example illustrated in FIG. 2, it is assumed that the short-range wireless communication unit 140 performs short-range wireless communication based on the Bluetooth standard.

  The storage unit 150 stores data and programs necessary for various processes performed by the control unit 160. The storage unit 150 illustrated in FIG. 2 stores a terminal group information table 151. The terminal group information table 151 stores information acquired by short-range wireless communication by the short-range wireless communication unit 140. FIG. 3 shows an example of the terminal group information table 151. As illustrated in FIG. 3, the terminal group information table 151 includes items such as “reception number”, “terminal ID”, “manufacturing number”, “encryption key”, and “response flag”.

  “Reception number” is the order in which the manufacturing numbers of mobile terminals belonging to the terminal group are received, “1” indicates the order corresponding to the own terminal, and “2” to “n” are mobile terminals present in the vicinity. The order corresponding to is shown. “Terminal ID” indicates a unique identifier (IMSI: International Mobile Subscriber Identity) of mobile terminals belonging to the terminal group.

  “Manufacturing number” indicates the manufacturing number of the mobile terminal belonging to the terminal group. “Encryption key” indicates an encryption key used for IMSI encryption. The “response flag” is a flag indicating whether or not the mobile terminal identified by the IMSI belongs to the terminal group, “1” indicates that it belongs to the terminal group, and “0” does not belong to the terminal group. It shows that.

  Returning to the description of FIG. 2, the control unit 160 performs a process of forming a terminal group and transferring an incoming call notification. Specifically, the control unit 160 includes a peripheral terminal recognition unit 161, a reception order determination unit 162, an incoming call notification reception unit 163, and an incoming call notification transfer unit 164.

  The peripheral terminal recognition unit 161 recognizes other mobile terminals present around the mobile terminal 100 among the plurality of mobile terminals existing in the cell of the same base station 10 as the peripheral terminals. Specifically, the peripheral terminal recognition unit 161 recognizes other mobile terminals present around the mobile terminal 100 as peripheral terminals using short-range wireless communication periodically performed by the short-range wireless communication unit 140. . Then, the peripheral terminal recognizing unit 161 stores the recognized peripheral terminal's IMSI, serial number, and encryption key (hereinafter referred to as “IMSI etc.”) in the terminal group information table 151.

  Also, the peripheral terminal recognition unit 161 periodically excludes other mobile terminals that are no longer present from the peripheral terminals among the other mobile terminals that existed around the mobile terminal 100 from the peripheral terminals. Specifically, the peripheral terminal recognition unit 161 specifies other mobile terminals that no longer exist in the vicinity as the absent terminal by using short-range wireless communication periodically performed by the short-range wireless communication unit 140, and specifies The IMSI of the absent terminal is deleted from the terminal group information table 151.

  The reception order determination unit 162 determines the reception order in which the peripheral terminals belonging to the terminal group and the mobile terminal 100 sequentially receive incoming notifications from the base station 10. Specifically, the reception order determination unit 162 refers to the terminal group information table 151, and determines the reception order for receiving the incoming notifications from the base station 10 in order from the mobile terminal having the higher rank indicated by the reception number. decide.

  In addition, the reception order determination unit 162, in the case where the absent terminal is excluded from the peripheral terminals by the peripheral terminal recognition unit 161, the peripheral terminal after the exclusion of the absent terminal and the mobile terminal 100 sequentially receive the incoming notifications from the base station 10. Re-determine the reception order of reception. Specifically, the reception order determination unit 162 periodically monitors the terminal group information table 151. Then, when the absent terminal is deleted from the terminal group information table 151, the reception order determining unit 162 refers to the updated terminal group information table 151 from which the absent terminal is deleted. Then, the reception order determination unit 162 re-determines the reception order for receiving the incoming notifications from the base station 10 in order from the mobile terminals having the higher ranks indicated by the reception numbers in the updated terminal group information table 151.

  The incoming call notification receiving unit 163 receives the incoming call notification from the base station 10 in the receiving order determined by the receiving order determining unit 162. Specifically, the incoming call notification receiving unit 163 wirelessly communicates the incoming call notification from the base station 10 when the receiving order corresponding to the IMSI of the mobile terminal 100 matches the receiving order determined by the receiving order determining unit 162. Received via the unit 130. On the other hand, when the reception order corresponding to the IMSI of the mobile terminal 100 does not match the reception order determined by the reception order determination unit 162, the incoming notification reception unit 163 stops receiving the incoming notification from the base station 10. . In this case, the incoming call notification receiving unit 163 receives various notifications transmitted from the peripheral terminals using the short-range wireless communication periodically performed by the short-range wireless communication unit 140.

  In addition, when receiving an incoming call notification from the base station 10, the incoming call notification receiving unit 163 receives broadcast information for notifying that a message indicating urgency has been delivered to the base station 10. Here, the message indicating urgency refers to a message transmitted to a plurality of mobile terminals located in the cell of the base station 10 all at once. For example, a message indicating urgency is a CBS (Cell Broadcast Service) message or an ETWS (Earthquake and Tsunami) message transmitted simultaneously from a CBC (Cell Broadcast Center) of the Japan Meteorological Agency to a plurality of mobile terminals via a base station when a disaster occurs. Warning System) message. The broadcast information indicates BCCH modification information when the message indicating urgency is a CBS message. The broadcast information indicates primary notification information when the message indicating urgency is an ETWS message.

  The incoming call notification transfer unit 164 transfers the incoming call notification to the peripheral terminal that is the incoming call destination when the destination of the incoming call notification received by the incoming call notification reception unit 163 is a peripheral terminal. Specifically, the incoming call notification transfer unit 164 refers to the terminal group information table 151 and searches for peripheral terminals that are destinations. Then, the incoming call notification transfer unit 164 transfers the incoming call notification to the peripheral terminal that is the incoming call destination using the short-range wireless communication performed by the short-range wireless communication unit 140.

  In addition, when the notification information is received by the incoming notification reception unit 163, the incoming notification transfer unit 164 transfers the received notification information to peripheral terminals all at once.

  Note that the peripheral terminal recognition unit 161, the reception order determination unit 162, the incoming notification reception unit 163, and the incoming notification transfer unit 164 in the control unit 160 illustrated in FIG. 2 correspond to an integrated device and an electronic circuit. The integrated device is, for example, an integrated device such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The electronic circuit is an electronic circuit such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit).

  Further, the terminal group information table 151 in the storage unit 150 illustrated in FIG. 2 corresponds to a semiconductor memory element or a storage device. The semiconductor memory element is, for example, a semiconductor memory element such as a random access memory (RAM), a read only memory (ROM), and a flash memory. The storage device is a storage device such as a hard disk or an optical disk.

  Next, a processing procedure performed by the mobile terminal 100 according to the present embodiment will be described with reference to FIGS. FIG. 4 is a flowchart illustrating the processing procedure of the main processing related to transfer of incoming notification by the mobile terminal 100 according to the present embodiment.

  As shown in FIG. 4, the portable terminal 100 waits until the power is turned on (No at Step S101). When the power is turned on (Yes at Step S101), the control unit 160 of the mobile terminal 100 sets an arbitrary value in a discontinuous reception (DRX) counter (Step S102). The DRX counter indicates the number of times that the mobile terminal 100 intermittently receives an incoming notification from the base station 10 at a predetermined DRX cycle.

  Then, the control unit 160 sets “0” as an initial value in the group mode flag (step S103). The group mode flag is a flag indicating whether or not the mobile terminal 100 belongs to a terminal group. When the portable terminal 100 does not belong to the terminal group, “0” is set in the group mode flag, and when the portable terminal 100 belongs to the terminal group, the number of all portable terminals belonging to the terminal group is set.

  Then, the wireless communication unit 130 prepares for communication with the base station 10 by receiving broadcast information from the base station 10 or transmitting a location registration request to the base station 10 (step S104). ).

  And the control part 160 determines whether the portable terminal 100 belongs to a terminal group (step S105). Specifically, the control unit 160 determines that the mobile terminal 100 does not belong to the terminal group when the group mode flag is “0”, and the mobile terminal 100 when the group mode flag is not “0”. Is determined to belong to the terminal group.

  When the mobile terminal 100 does not belong to the terminal group (No at Step S105), the wireless communication unit 130 performs intermittent reception and receives an incoming call notification from the base station 10 (Step S106). As a result, if the wireless communication unit 130 is out of the service area (Yes at Step S107), the process returns to Step S104. On the other hand, if the wireless communication unit 130 is not out of service area (No at Step S107), the process proceeds to the group formation process at Step S108. This group formation process is the process shown in FIG. 5 and will be described later.

  When the process of step S108 is completed, the control unit 160 accepts a user operation from the input unit 110 (step S110). If the power is not OFF (No in step S111), the control unit 160 returns the process to step S105. On the other hand, if the power is off (Yes at Step S111), the control unit 160 sends a power off / group leaving notification using the short-range wireless communication unit 140 (Step S112), and ends the main process. The power-off / group leave notification is a notification for notifying a plurality of mobile terminals belonging to the terminal group that the mobile terminal 100 leaves the terminal group.

  FIG. 10 is a diagram illustrating a configuration example of power-off / group leave notification. As shown in FIG. 10, the power-off / group leave notification includes a header and a terminal IMSI. The terminal IMSI stores the IMSI of the mobile terminal 100 whose power is turned off.

  Returning to FIG. 4, when the mobile terminal 100 belongs to the terminal group (Yes at Step S <b> 105), the wireless communication unit 130 shifts the process to the group reception process at Step S <b> 109. The group reception process is the process shown in FIG. 7 and will be described later. When the process of step S109 is completed, the control unit 160 shifts the process to step S110.

  Next, the group formation processing in step S108 shown in FIG. 4 will be specifically described with reference to FIG. FIG. 5 is a flowchart illustrating the processing procedure of the group formation processing of the mobile terminal 100 according to the present embodiment. As shown in FIG. 5, when the group formation process is started, the control unit 160 decrements the DRX counter (step S201), and determines whether or not the DRX counter is “0” (step S202).

  Then, when the DRX counter is “0” (Yes at Step S202), the peripheral terminal recognizing unit 161 transmits a peripheral terminal search notification using the short-range wireless communication performed by the short-range wireless communication unit 140. (Step S203). The peripheral terminal search notification is a notification for searching for peripheral terminals that are other mobile terminals existing around the mobile terminal 100.

  FIG. 11 is a diagram illustrating a configuration example of the peripheral terminal search notification. As shown in FIG. 11, the peripheral terminal search notification includes a header, a master terminal manufacturing number, and base station information. In the master terminal manufacturing number, the manufacturing number of the portable terminal 100 is stored. The base station information includes the ID of the base station 10, the identification number of the cell where the mobile terminal 100 is located, and the like.

  Returning to FIG. 5, the peripheral terminal recognizing unit 161 that has transmitted the peripheral terminal notification executes the peripheral terminal response process in step S <b> 204. The peripheral terminal response process is the process shown in FIG. 6 and will be described later.

  When the process of step S204 is completed, the reception order determination unit 162 determines whether a peripheral terminal response to the peripheral terminal notification has been received (step S205). That is, the reception order determining unit 162 refers to the terminal group information table 151 and determines that a peripheral terminal response has been received when there is a mobile terminal whose response flag is “1”. On the other hand, when there is no portable terminal whose response flag is “1”, the reception order determination unit 162 determines that a peripheral terminal response has not been received. The peripheral terminal response is a notification for another mobile terminal that has received the peripheral terminal search notification from the mobile terminal 100 to respond to the mobile terminal 100.

  FIG. 12 is a diagram illustrating a configuration example of a peripheral terminal response. As shown in FIG. 12, the peripheral terminal response includes a header, a master terminal manufacturing number, and a response terminal manufacturing number. In the master terminal manufacturing number, the manufacturing number of the portable terminal 100 is stored. The response terminal manufacturing number stores the manufacturing numbers of other mobile terminals that have received the peripheral terminal search response from the mobile terminal 100.

  Returning to FIG. 5, if the reception order determination unit 162 has not received the peripheral terminal response (No at Step S205), the reception order determination unit 162 sets an arbitrary value to the DRX counter (Step S206), and ends the group formation process. .

  On the other hand, when receiving the peripheral terminal response (Yes at Step S205), the reception order determining unit 162 generates a reception order notification with reference to the terminal group information table 151 (Step S207). The reception order notification is a notification for assigning to the peripheral terminals a reception order in which peripheral terminals belonging to the terminal group and the mobile terminal 100 sequentially receive incoming notifications from the base station 10.

  FIG. 13 is a diagram illustrating a configuration example of reception order notification. As illustrated in FIG. 13, the reception order notification includes a header, the number of terminals, a reception order, and a terminal IMSI. In the number of terminals, the total number of peripheral terminals belonging to the terminal group and mobile terminals including the mobile terminal 100 is stored. The reception order stores the order indicating the reception order in which the peripheral terminals belonging to the terminal group and the mobile terminal 100 receive the incoming notifications from the base station 10 in order. In the terminal IMSI, the IMSIs of the peripheral terminals belonging to the terminal group and the mobile terminal 100 are stored.

  Here, the process in which the reception order determination unit 162 generates the reception order notification will be briefly described with reference to FIG. The reception order determining unit 162 reads the reception number and the terminal IMSI in order from the mobile terminal having the higher rank indicated by the reception number with reference to the terminal group information table 151, and receives the reception order notification shown in FIG. Store the corresponding reception number and terminal IMSI. Further, the reception order determination unit 162 counts the total number of terminal IMSIs included in the terminal group information table 151 and stores the total number of terminals in the reception order notification shown in FIG. In this way, a reception order notification is generated.

  Returning to FIG. 5, the reception order determination unit 162 that has generated the reception order notification transmits the reception order notification to the peripheral terminals using the short-range wireless communication performed by the short-range wireless communication unit 140 (step S <b> 208). ). Then, the reception order determining unit 162 sets the number of all mobile terminals belonging to the terminal group in the group mode flag (step S209), and advances the process to step S218.

  On the other hand, if the DRX counter is not “0” (No at Step S202), the peripheral terminal recognition unit 161 uses other short-range wireless communication performed by the short-range wireless communication unit 140 to use other mobile terminals existing in the vicinity. Receives a peripheral terminal search notification. Then, when the peripheral terminal recognition unit 161 has not received the peripheral terminal search notification (No at Step S210), the group formation process ends.

  On the other hand, when the peripheral terminal recognizing unit 161 receives the notification of searching for the peripheral terminal (Yes in step S210), the peripheral terminal recognizing unit 161 transmits the peripheral terminal response to another mobile terminal using the short-range wireless communication performed by the short-range wireless communication unit 140. (Step S211). Then, the peripheral terminal recognition unit 161 transmits / receives an encryption key exchange notification to / from another portable terminal (step S212). The encryption key exchange notification is a notification for the mobile terminal 100 to exchange an encryption key used for encrypting its own IMSI with another mobile terminal.

  FIG. 14 is a diagram illustrating a configuration example of the encryption key exchange notification. As shown in FIG. 14, the encryption key exchange notification includes a header, a notification destination terminal manufacturing number, and an encryption key. In the notification destination terminal manufacturing number, the manufacturing number of another portable terminal that is an object for exchanging the encryption key is stored. In the encryption key, an encryption key for encrypting the IMSI of the mobile terminal 100 is stored.

  Returning to FIG. 5, the peripheral terminal recognition unit 161 transmits / receives an IMSI exchange notification to / from another portable terminal (step S <b> 213). The IMSI exchange notification is a notification for exchanging the IMSI with another mobile terminal.

  FIG. 15 is a diagram illustrating a configuration example of the IMSI exchange notification. As shown in FIG. 15, the IMSI exchange notification includes a header, a master terminal IMSI, and a slave terminal IMSI. The master terminal IMSI stores the IMSI of the portable terminal 100 that has entered the master mode. The slave terminal IMSI stores the IMSI of the mobile terminal 100 that is in the slave mode.

  Returning to FIG. 5, the peripheral terminal recognition unit 161 receives the reception order notification (step S214), and stores the IMSI and the like included in the received reception order notification in the terminal group information table 151 (step S215). Then, the peripheral terminal recognition unit 161 sets the number of all mobile terminals belonging to the terminal group in the group mode flag (step S216).

  Then, the reception order determination unit 162 sets the highest reception number in the terminal group information table 151 as an initial value in the reception order counter (step S217). The reception order counter is a value indicating the reception order of the mobile terminals that perform the current intermittent reception among the mobile terminals belonging to the terminal group.

  Then, the reception order determination unit 162 refers to the terminal group information table 151, extracts the reception order corresponding to the IMSI of the mobile terminal 100, stores it in the own terminal order memory (step S218), and ends the group formation process. To do. Note that the own terminal order memory is a memory for storing the reception order in which the mobile terminals 100 belonging to the terminal group perform intermittent reception.

  Next, the peripheral terminal response reception process in step S204 of FIG. 5 will be specifically described with reference to FIG. FIG. 6 is a flowchart illustrating the processing procedure of the peripheral terminal response reception process of the mobile terminal 100 according to the present embodiment. As shown in FIG. 6, when the peripheral terminal response reception process is started, the peripheral terminal recognition unit 161 sets an initial value “0” in the peripheral terminal counter (step S301). The peripheral terminal counter indicates a counter value used for counting other mobile terminals existing around the mobile terminal 100.

  When the peripheral terminal recognition unit 161 receives the peripheral terminal response (Yes at Step S302), the peripheral terminal recognition unit 161 increments the peripheral terminal counter (Step S303). Then, the peripheral terminal recognizing unit 161 stores the manufacturing numbers of other mobile terminals included in the received peripheral terminal search response in the terminal group information table 151 (step S304). Then, the peripheral terminal recognition unit 161 sets “1” indicating that it belongs to the terminal group to the corresponding response flag (step S305), and returns the process to step S302.

  On the other hand, if the peripheral terminal recognition unit 161 does not receive the peripheral terminal response (No at Step S302), the peripheral terminal recognition unit 161 determines whether 200 msec has elapsed since the previous reception of the peripheral terminal response (Step S306). If 200 msec has not elapsed since the last time the peripheral terminal response was received (No at step S306), the peripheral terminal recognition unit 161 returns the process to step S302.

  On the other hand, if 200 msec has elapsed since the last time the peripheral terminal response was received (Yes at step S306), the peripheral terminal recognition unit 161 refers to the terminal group information table 151 and encrypts data with other mobile terminals. A key exchange notification is transmitted and received (step S307). Then, the peripheral terminal recognition unit 161 transmits / receives an IMSI exchange notification to / from another portable terminal (step S308).

  Then, the peripheral terminal recognition unit 161 calculates the reception timing of the other portable terminal based on the IMSI exchanged with the other portable terminal (step S309). Note that the reception timing refers to the timing at which the mobile terminal receives an incoming call notification from the base station.

  Here, a process in which the peripheral terminal recognition unit 161 calculates the reception timing will be described. The peripheral terminal recognizing unit 161 in the present embodiment calculates the paging channel and the paging opportunity as the reception timing based on the IMSI exchanged with other mobile terminals. The paging channel is calculated by the following equation (1). The paging opportunity is calculated by the following equation (2).

Paging channel = IMSI mod K (1)
However, K is the number of paging channels transmitted in a cell where other mobile terminals are located.

Paging opportunity = {(IMSI / K) mod (DRX cycle / PBP)} × PBP
+ N × DRX cycle + frame offset (2)
However, n = 0, 1,..., 4095. The DRX cycle is an intermittent reception interval (DRX interval) defined in units of radio frames. PBP is a call block period (Paging Block Periodicity).

  Then, the peripheral terminal recognition unit 161 determines whether the reception timing of the mobile terminal 100 matches the reception timing of another mobile terminal (step S310). If the reception timing of the mobile terminal 100 does not match the reception timing of another mobile terminal (No at Step S310), the peripheral terminal recognition unit 161 advances the process to Step S312. On the other hand, if the reception timing of the mobile terminal 100 matches the reception timing of another mobile terminal (Yes at Step S310), the peripheral terminal recognition unit 161 uses the IMSI of the other mobile terminal included in the IMSI exchange notification as a terminal. It stores in the group information table 151 (step S311).

  Then, the peripheral terminal recognition unit 161 decrements the peripheral terminal counter (step S312), and determines whether or not the peripheral terminal counter has become “0” (step S313). If the peripheral terminal counter is not “0” (No at Step S313), the peripheral terminal recognition unit 161 returns the process to Step S307. On the other hand, when the peripheral terminal counter becomes “0” (Yes at step S313), the peripheral terminal recognition unit 161 ends the peripheral terminal response reception process.

  Next, the group reception process in step S109 of FIG. 4 will be specifically described with reference to FIG. FIG. 7 is a flowchart illustrating the processing procedure of the group reception process of the mobile terminal 100 according to the present embodiment.

  As shown in FIG. 7, when the group reception process is started, the incoming call notification receiving unit 163 determines whether or not the reception order counter matches the reception order of the portable terminal 100 stored in the own terminal order memory (step). S401). When the reception order counter matches the reception order of the mobile terminal 100 stored in the own terminal order memory (Yes at step S401), the incoming notification reception unit 163 performs intermittent reception and notifies the incoming call notification from the base station 10. Reception is performed via the wireless communication unit 130 (step S402). Then, the incoming call notification receiving unit 163 shifts the processing to the group notification processing in step S403. This group notification process is the process shown in FIG. 8 and will be described later.

  When the process of step S403 is completed, the peripheral terminal recognition unit 161 refers to the terminal group information table 151 and determines whether the configuration of the terminal group has been changed (step S404). Specifically, the peripheral terminal recognition unit 161 refers to the terminal group information table and determines that the configuration of the terminal group has been changed when there is at least one portable terminal with a response flag “0”. . On the other hand, the peripheral terminal recognition unit 161 determines that the configuration of the terminal group has not been changed when there is no portable terminal having a response flag of “0”.

  Then, when the configuration of the terminal group is changed (Yes at Step S404), the peripheral terminal recognition unit 161 shifts the process to the group configuration change process at Step S405. This group configuration change process is the process shown in FIG. 9 and will be described later. On the other hand, if the configuration of the terminal group has not been changed (No at Step S404), the peripheral terminal recognition unit 161 ends the group reception process.

  On the other hand, if the reception order counter does not match the reception order of the mobile terminal 100 stored in the own terminal order memory (No at step S401), the control unit 160 performs short-range wireless communication performed by the short-range wireless communication unit 140. Are used to receive various notifications (step S406).

  When receiving notification information from the peripheral terminal via the short-range wireless communication unit 140 (Yes at Step S409), the control unit 160 receives a message indicating the urgency distributed to the base station 10. Message reception processing is performed (step S407). For example, when the message indicating the urgency delivered to the base station 10 is a CBS message, the control unit 160 receives BCCH modification information as broadcast information from the peripheral terminal via the short-range wireless communication unit 140. . Then, the control unit 160 receives a CBS message transmitted on the CTCH (Common Traffic Channel) by the base station 10 via the wireless communication unit 130.

  For example, when the message indicating the urgency distributed to the base station 10 is an ETWS message, the control unit 160 transmits Primary Notification information as notification information from the peripheral terminal via the short-range wireless communication unit 140. Receive. And the control part 160 receives the ETWS message transmitted on CTCH by the base station 10 via the radio | wireless communication part 130. FIG.

  Then, the control unit 160 initializes the group mode flag (step S408), and ends the group reception process.

  On the other hand, when receiving an incoming call notification from the peripheral terminal via the short-range wireless communication unit 140 (No at Step S409, Yes at Step S410), the control unit 160 executes an incoming call process (Step S411). Specifically, the control unit 160 sends a response to the received incoming call notification to the base station 10 within a predetermined time (for example, 300 sec) from the time when the incoming call notification is received. Thereby, the link between the portable terminal 100 and the base station 10 is established. The incoming call notification is a notification for transferring the incoming call notification to the peripheral terminal that is the destination of the incoming call notification from the base station 10.

  FIG. 16 is a diagram illustrating a configuration example of an incoming call notification. As shown in FIG. 16, the incoming notification includes a header, an incoming terminal IMSI, and a reception level. The incoming terminal IMSI stores the IMSI of the peripheral terminal that is the destination of incoming notifications from the base station 10. The reception level stores the reception level of radio waves emitted from the base station 10.

  Returning to FIG. 7, when the incoming call process is executed, the control unit 160 initializes the group mode flag (step S408), and ends the group reception process.

  On the other hand, when the control unit 160 receives a power-off / group-separation notification from the peripheral terminal via the short-range wireless communication unit 140 (No at Step S410, Yes at Step S412), the control unit 160 proceeds to Step S416.

  When the control unit 160 receives a notification of no incoming call from the peripheral terminal via the short-range wireless communication unit 140 (Yes in step S413), the control unit 160 transmits an Ack notification to the peripheral terminal (step S414). The notification of no incoming call is a notification for notifying the peripheral terminal when there is no incoming call notification from the base station 10. The Ack notification is a notification for the peripheral terminal to respond to the notification of no incoming call.

  FIG. 17 is a diagram illustrating a configuration example of an incoming call notification. As shown in FIG. 17, the notification of no incoming call includes a header, a master terminal IMSI, a reception level, and an electric field flag. The master terminal IMSI stores the IMSIs of other portable terminals that are in the master mode. The reception level stores the reception level of radio waves emitted from the base station 10. The electric field flag stores “1” indicating that the radio wave reception level is normal when the reception level is greater than the threshold, and indicates that the radio wave reception level is abnormal when the reception level is equal to or less than the threshold. “0” is stored.

  FIG. 18 is a diagram illustrating a configuration example of the Ack notification. As shown in FIG. 18, the Ack notification includes a header, a master terminal IMSI, and a slave terminal IMSI. The master terminal IMSI stores the IMSI of the portable terminal 100 that has entered the master mode. The slave terminal IMSI stores the IMSI of the mobile terminal 100 that is in the slave mode.

  Returning to FIG. 7, when receiving the Ack notification after receiving the no-arrival notification, the control unit 160 determines whether or not the electric field flag of the received no-incoming notification is “1” (step S415). When the electric field flag for the notification of no incoming call is “1” (Yes at Step S415), the control unit 160 shifts the processing to Step S416. On the other hand, when the electric field flag for notification of no incoming call is “0” (No at Step S415), the control unit 160 initializes the group mode flag (Step S408), and ends the group reception process.

  In step S416, the control unit 160 determines whether a reception order notification has been received via the short-range wireless communication unit 140 (step S416). If the control unit 160 has not received the reception order notification (No at Step S416), the control unit 160 advances the process to Step S419. On the other hand, when receiving the reception order notification (Yes at Step S416), the control unit 160 stores the IMSI and the like included in the received reception order notification in the terminal group information table 151 and updates the terminal group information table 151. (Step S417). Then, the reception order determining unit 162 refers to the terminal group information table 151, extracts the reception order corresponding to the IMSI of the mobile terminal 100, stores it in the local terminal rank memory, and updates the local terminal rank memory (step). S418).

  Then, the control unit 160 increments the reception order counter (step S419) and determines whether or not the reception order counter is equal to or greater than the number of all mobile terminals belonging to the terminal group (step S420). When the reception order counter is equal to or greater than the number of all mobile terminals belonging to the terminal group (Yes at Step S420), the control unit 160 sets the highest reception order in the terminal group information table to the reception order counter (Step S420). S421), the group reception process is terminated. On the other hand, when the reception order counter is less than the number of all mobile terminals belonging to the terminal group (No at Step S420), the control unit 160 ends the group reception process as it is.

  Next, the group notification process in step S403 shown in FIG. 7 will be specifically described with reference to FIG. FIG. 8 is a flowchart illustrating the processing procedure of the group notification process of the mobile terminal 100 according to the present embodiment. As shown in FIG. 8, when the group notification process is started, the incoming call notification receiving unit 163 receives broadcast information via the wireless communication unit 130 (step S501). For example, when a CBS message is distributed to the base station 10 as a message indicating urgency, the incoming call notification receiving unit 163 receives BCCH Modification information via the wireless communication unit 130. For example, when the ETWS message is distributed to the base station 10 as a message indicating urgency, the incoming call notification receiving unit 163 receives the Primary Notification information via the wireless communication unit 130.

  Then, when the notification information is received by the incoming notification reception unit 163 (Yes in step S502), the incoming notification transfer unit 164 sends the received notification information to the peripheral terminals stored in the terminal group information table 151. Transfer all at once (step S503). And the control part 160 performs the message reception process for receiving the message which shows the urgency delivered to the base station 10 (step S504), and advances a process to step S505.

  On the other hand, the incoming call notification transfer unit 164 determines whether or not the incoming call notification receiving unit 163 has received an incoming call notification from the base station 10 when the notification information is not received by the incoming call notification receiving unit 163 (No in step S502). Is determined (step S505).

  Then, when the incoming call notification receiving unit 163 does not receive the incoming call notification from the base station 10 (No in step S505), the incoming call notification transfer unit 164 measures the reception level of the radio wave from the base station 10 (step S505). S506). Then, when the reception level is higher than the threshold value (Yes at Step S507), the incoming call notification transfer unit 164 stores a no incoming call notification in which “1” indicating normal is set in the electric field flag in the terminal group information table 151. It transmits to the peripheral terminal (step S508). Thereafter, the incoming notification transfer unit 164 advances the processing to step S519. On the other hand, when the reception level is equal to or lower than the threshold (No at Step S507), the incoming call notification transfer unit 164 stores, in the terminal group information table 151, an incoming call notification in which “0” indicating abnormality is set in the electric field flag It transmits to the peripheral terminal (step S509). Thereafter, the incoming call notification transfer unit 164 initializes the group mode flag (step S510), and advances the process to step S519.

  On the other hand, when the incoming call notification receiving unit 163 receives an incoming call notification from the base station 10 (Yes in step S505), the incoming call notification transfer unit 164 determines whether the destination of the received incoming call notification is a peripheral terminal. Is determined (step S511). Specifically, the incoming call notification transfer unit 164 determines whether the incoming call notification destination is the peripheral when the IMSI of the mobile terminal that is the incoming call notification destination matches the IMSI of the peripheral terminal stored in the terminal group information table 151. It is determined that it is a terminal. On the other hand, when the IMSI of the mobile terminal that is the destination of the incoming notification matches the IMSI of the mobile terminal 100 that is stored in the terminal group information table 151, the incoming notification transfer unit 164 is not the destination of the incoming notification. Is determined.

  Then, when the destination of the incoming notification is a peripheral terminal (Yes at Step S511), the incoming notification transfer unit 164 transfers the incoming notification to the peripheral terminal that is the destination (Step S512). Specifically, the incoming call notification transfer unit 164 transfers the incoming call notification to the peripheral terminal that is the incoming call destination using the short-range wireless communication performed by the short-range wireless communication unit 140. Then, the incoming notification transfer unit 164 refers to the terminal group information table 151 and sets “0” in the response flag corresponding to the peripheral terminal that is the destination (step S513). A notification of no incoming call is transmitted (step S518).

  On the other hand, when the incoming call notification destination is not a peripheral terminal (No at step S511), that is, when the incoming call notification destination is the local terminal, the incoming call notification transfer unit 164 executes an incoming call process (step S511). S514). Then, the incoming call notification transfer unit 164 transmits a group leave notification to the peripheral terminals (step S515). Then, the incoming call notification transfer unit 164 refers to the terminal group information table 151, sets “0” to the response flag corresponding to the mobile terminal 100 (step S516), initializes the group mode flag (step S517), and The process proceeds to step S518.

  In step S519, the peripheral terminal recognition unit 161 receives an Ack notification from the peripheral terminal via the short-range wireless communication unit 140 (step S519). Then, the peripheral terminal recognition unit 161 refers to the terminal group information table 151, sets “1” in the response flag corresponding to the peripheral terminal that has received the Ack notification (step S520), and ends the group notification process.

  Next, the group configuration change process in step S405 shown in FIG. 7 will be specifically described with reference to FIG. FIG. 9 is a flowchart illustrating the processing procedure of the group configuration change process of the mobile terminal 100 according to the present embodiment.

  As illustrated in FIG. 9, when the group configuration change process is started, the peripheral terminal recognition unit 161 deletes the IMSI or the like whose response flag is “0” from the terminal group information table 151 (step S601). Then, the peripheral terminal recognition unit 161 refers to the terminal group information table 151 and resets the number of all mobile terminals belonging to the terminal group to the group mode flag (step S602). Then, the peripheral terminal recognition unit 161 regenerates the reception order notification with reference to the terminal group information table 151 (step S603). Then, the peripheral terminal recognition unit 161 retransmits the reception order notification to the peripheral terminals using the short-range wireless communication performed by the short-range wireless communication unit 140 (step S604), and ends the group configuration change process. .

  Next, application examples of the mobile terminal according to the present embodiment will be described with reference to FIGS. 19 to 24 are diagrams for describing application examples of the mobile terminal according to the present embodiment. 19 to 22 show a series of processes for the mobile terminals 100a to 100c shown in FIG. 1 to form a terminal group and transfer an incoming call notification. In addition, the mobile terminals 100a to 100c have functions similar to those of the mobile terminal 100 according to the present embodiment.

  As shown in FIG. 19, each of the mobile terminals 100a to 100c intermittently receives an incoming call notification from the base station 10 at a predetermined DRX cycle when the power is turned on. The portable terminals 100a to 100c are set to a short-range wireless communication reception mode (hereinafter referred to as “slave mode”) during a period from the previous intermittent reception to the next intermittent reception. And the portable terminal 100a will switch to the transmission mode (henceforth "master mode") of short-distance radio | wireless communication, if intermittent reception is carried out arbitrary times.

  And the portable terminal 100a which became master mode recognizes the portable terminals 100b and 100c which exist in the periphery as a peripheral terminal using near field communication.

  Specifically, the mobile terminal 100a that has entered the master mode transmits a peripheral terminal search notification for searching for peripheral terminals using short-range wireless communication. The mobile terminals 100b and 100c that have received the peripheral terminal search notification transmit a peripheral terminal response as a response to the mobile terminal 100a. The mobile terminal 100a that has received the peripheral terminal response exchanges an encryption key exchange notification including an encryption key used for encryption with the mobile terminals 100b and 100c. The portable terminal 100a that exchanged the encryption key exchanges an IMSI exchange notification including the IMSI that is a unique identifier encrypted using the encryption key with the portable terminals 100b and 100c. The portable terminal 100a having exchanged the IMSI recognizes the portable terminals 100b and 100c identified by the exchanged IMSI as peripheral terminals. Accordingly, a terminal group to which the mobile terminals 100b and 100c, which are peripheral terminals, and the mobile terminal 100a belong is formed.

  Thereafter, the mobile terminal 100a determines the reception order in which the mobile terminals 100b and 100c belonging to the terminal group and the mobile terminal 100a receive incoming notifications from the base station 10 in order. Here, it is assumed that the mobile terminal 100a determines the reception order in which the mobile terminals 100a, 100b, and 100c are first, second, and third, respectively. Then, the mobile terminal 100a transmits a reception order notification including the determined reception order to the mobile terminals 100b and 100c that are peripheral terminals. Thereby, the mobile terminals 100a to 100c belonging to the terminal group share the reception order of receiving the incoming notifications from the base station 10 in order.

  Then, the mobile terminals 100a to 100c belonging to the terminal group receive the incoming call notification from the base station 10 in the shared reception order as shown in FIG. That is, the mobile terminal 100a receives the incoming call notification from the base station 10 first. However, since there was no incoming call notification from the base station 10, the mobile terminal 100a measures the reception level of the radio wave emitted from the base station 10, and sends a no-arrival notification including the measurement result to the mobile terminals 100b and 100c as peripheral terminals. Send to. The mobile terminals 100b and 100c that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100a.

  Next, the mobile terminal 100b receives the incoming call notification from the base station 10 second. However, since there was no incoming call notification from the base station 10, the mobile terminal 100b measures the reception level of the radio wave emitted from the base station 10, and sends a no-arrival notification including the measurement result to the mobile terminals 100a and 100c that are peripheral terminals. Send to. The mobile terminals 100a and 100c that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100b.

  Next, the mobile terminal 100c receives the incoming call notification from the base station 10 third. However, since there was no incoming call notification from the base station 10, the mobile terminal 100c measures the reception level of the radio wave emitted from the base station 10, and sends a no-arrival notification including the measurement result to the mobile terminals 100a and 100b as peripheral terminals. Send to. The mobile terminals 100a and 100b that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100c.

  And since all the portable terminals 100a-100c which belong to a terminal group performed intermittent reception, the portable terminal 100a with the 1st receiving order receives the incoming call notification from the base station 10 again. Then, since the destination of the received incoming notification is the mobile terminal 100b that is a peripheral terminal, the mobile terminal 100a transfers the incoming notification to the mobile terminal 100b that is the destination. Then, the mobile terminal 100 b that has received the incoming call notification executes incoming call processing for the base station 10. Thereby, the user of the portable terminal 100b can start a call for the incoming notification to the portable terminal 100b.

  In the description of FIG. 20 described above, the case where the destination of the incoming notification received by the mobile terminal 100a is a peripheral terminal, but the destination of the incoming notification received by the mobile terminal 100a is the own terminal. Cases are also envisaged. FIG. 21 illustrates an example in which the destination of the incoming notification received by the mobile terminal 100a is the own terminal.

  As illustrated in FIG. 21, the mobile terminal 100 a receives the incoming call notification from the base station 10 again after all the mobile terminals 100 a to 100 c belonging to the terminal group perform intermittent reception. Then, the mobile terminal 100a notifies the peripheral terminal that the mobile terminal 100a is leaving the terminal group using the group leave notification because the destination of the received incoming call notification is its own terminal. Then, the portable terminal 100a transmits a notification of no incoming call to the portable terminals 100b and 100c that are peripheral terminals. The mobile terminals 100b and 100c that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100a.

  The mobile terminal 100a that has received the Ack notification excludes its own terminal from the terminal group, and the reception order in which the mobile terminals 100b and 100c belonging to the terminal group excluding the own terminal sequentially receive incoming notifications from the base station 10 is renewed. To decide. Here, it is assumed that the mobile terminal 100a newly determines the reception order in which the mobile terminals 100b and 100c are first and second, respectively.

  Then, the mobile terminal 100a transmits a reception order notification including the newly determined reception order to the mobile terminals 100b and 100c that are peripheral terminals. As a result, the mobile terminals 100b and 100c belonging to the terminal group share a new reception order for receiving incoming notifications from the base station 10 in order.

  Then, the mobile terminal 100 a that has received the incoming call notification executes incoming call processing for the base station 10. Thereby, the user of the portable terminal 100a can start a call for the incoming notification to the portable terminal 100a.

  Further, in the description of FIG. 19 above, the case where the terminal group to which the mobile terminals 100a to 100c belong is formed, but it is also assumed that the terminal group once formed is dissolved for some reason. FIG. 22 illustrates an example in which a terminal group once formed is dissolved.

  As illustrated in FIG. 22, the mobile terminals 100 a to 100 c belonging to the terminal group receive the incoming call notification from the base station 10 in the shared reception order as illustrated in FIG. 22. That is, the mobile terminal 100a receives the incoming call notification from the base station 10 first. However, since there was no incoming call notification from the base station 10, the mobile terminal 100a measures the reception level of the radio wave emitted from the base station 10, and sends a no-arrival notification including the measurement result to the mobile terminals 100b and 100c as peripheral terminals. Send to. The mobile terminals 100b and 100c that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100a.

  Next, the mobile terminal 100b receives the incoming call notification from the base station 10 second. However, since there was no incoming call notification from the base station 10, the mobile terminal 100b measures the reception level of the radio wave emitted from the base station 10, and sends a no-arrival notification including the measurement result to the mobile terminals 100a, 100c as peripheral terminals. Send to.

  The mobile terminals 100a and 100c that have received the notification of no incoming call transmit an Ack notification to the mobile terminal 100b. At this time, it is assumed that the mobile terminal 100c cannot perform short-range wireless communication with the mobile terminals 100a and 100b. In this case, the mobile terminal 100b cannot receive the Ack notification from the mobile terminal 100c. For this reason, the mobile terminal 100b excludes the mobile terminal 100c that has not received the Ack notification from the terminal group, and the mobile terminals 100a and 100b belonging to the terminal group from which the mobile terminal 100c is excluded sequentially receives the incoming notifications from the base station 10. The receiving order is newly determined. Here, it is assumed that the mobile terminal 100b newly determines a reception order in which the mobile terminals 100b and 100a are first and second, respectively.

  Then, the mobile terminal 100b transmits a reception order notification including the newly determined reception order to the mobile terminal 100a that is a peripheral terminal. As a result, the mobile terminals 100a and 100c belonging to the terminal group share a new reception order for receiving incoming notifications from the base station 10 in order.

  Then, the mobile terminals 100a and 100c belonging to the terminal group receive the incoming call notification from the base station 10 in the shared reception order. That is, the mobile terminal 100b receives the incoming call notification from the base station 10 first. However, since there was no incoming call notification from the base station 10, the mobile terminal 100b measures the reception level of the radio wave emitted from the base station 10, and sends a no-call notification including the measurement result to the mobile terminal 100a, which is a peripheral terminal. To do. At this time, it is assumed that the mobile terminal 100b is handed over from the cell of the base station 10 to the cell of another base station, and the reception level of the radio wave is equal to or less than the threshold value. In this case, the mobile terminal 100b transmits a notification of no incoming call including a measurement result indicating that the reception level of radio waves is abnormal to the mobile terminal 100a that is a peripheral terminal. Thereby, the terminal group formed by the mobile terminals 100a to 100c is dissolved. As a result, each of the mobile terminals 100a to 100c intermittently receives an incoming call notification from the base station 10 at a predetermined DRX cycle.

  Further, in the description of FIGS. 20 and 21 described above, the case has been described in which the mobile terminals 100a to 100c belonging to the terminal group transfer the incoming notification, but the mobile terminals 100a to 100c belonging to the terminal group transfer the notification information. It may be. FIG. 23 illustrates an example in which the mobile terminals 100a to 100c belonging to the terminal group transfer the notification information.

  As shown in FIG. 23, the mobile terminals 100a to 100c belonging to the terminal group receive the incoming call notification from the base station 10 in the shared reception order. That is, the mobile terminal 100a receives the incoming call notification from the base station 10 first. At this time, it is assumed that the mobile terminal 100a has received notification information that notifies that a message indicating urgency has been delivered to the base station 10. The broadcast information indicates BCCH modification information when the message indicating urgency is a CBS message. The broadcast information indicates primary notification information when the message indicating urgency is an ETWS message.

  And the portable terminal 100a which received alerting | reporting information transmits the received alerting | reporting information simultaneously with respect to the portable terminals 100b and 100c which are peripheral terminals. Thereafter, each of the mobile terminals 100a to 100c performs message reception processing for receiving a message indicating urgency distributed to the base station 10. For example, each of the mobile terminals 100a to 100c receives a CBS message or an ETWS message transmitted on the CTCH by the base station 10. Thereby, when a catastrophe occurs, the user of the some portable terminal which exists in the cell of the same base station can acquire quickly the message which shows urgency.

  In the description of FIG. 23 described above, the case where the mobile terminals 100a to 100c belonging to the terminal group transfer the notification information has been described. However, the mobile terminals 100a to 100c belonging to the terminal group transmit a message indicating the notification information and urgency. You may make it forward. FIG. 24 illustrates an example in which the mobile terminals 100a to 100c belonging to the terminal group transfer notification information and a message indicating urgency.

  As illustrated in FIG. 24, the mobile terminals 100a to 100c belonging to the terminal group receive the incoming call notification from the base station 10 in the shared reception order. That is, it is assumed that the mobile terminal 100a has received notification information that notifies that a message indicating urgency has been distributed to the base station 10.

  And the portable terminal 100a which received alerting | reporting information transmits the received alerting | reporting information simultaneously with respect to the portable terminals 100b and 100c which are peripheral terminals. Thereafter, the mobile terminal 100a performs message reception processing for receiving a message indicating urgency distributed to the base station 10. The mobile terminal 100a that has received the message indicating the urgency transmits the received message to the peripheral terminals 100b and 100c all at once. Thereby, when a catastrophe occurs, the user of the some portable terminal which exists in the cell of the same base station can acquire quickly the message which shows urgency.

  As described above, the mobile terminal 100 according to the present embodiment recognizes peripheral terminals existing in the vicinity, receives incoming notifications from the base station 10 in order in cooperation with the recognized peripheral terminals, and receives incoming notifications. When the destination of the call is a peripheral terminal, the incoming call notification is transferred to the peripheral terminal. Therefore, the mobile terminal 100 according to the present embodiment can share the power consumption required when receiving the incoming call notification from the base station 10 with the peripheral terminals, and the incoming call notification while reducing the power consumption. Can be obtained quickly.

  Also, the mobile terminal 100 according to the present embodiment periodically excludes the absent terminals that are no longer present in the vicinity from the peripheral terminals, and re-decides the latest reception order from which the absent terminals are excluded. For this reason, the mobile terminal 100 according to the present embodiment can receive the incoming notification in the latest reception order excluding the absent terminal, and can acquire the incoming notification more quickly.

  In addition, when receiving the incoming call notification, the mobile terminal 100 according to the present embodiment receives notification information for notifying that a message indicating urgency has been delivered to the base station, and transfers the notification information to the peripheral terminals all at once. To do. For this reason, the portable terminal 100 which concerns on a present Example can convey simultaneously the information which shows urgency with respect to the several portable terminal located in the cell of the same base station, when a catastrophe occurs. .

  In addition, the mobile terminal 100 according to the present embodiment recognizes peripheral terminals using short-range wireless communication. For this reason, the mobile terminal 100 according to the present embodiment can easily recognize the peripheral terminal using the existing short-range wireless communication function installed in the mobile terminal.

  In addition, the mobile terminal 100 according to the present embodiment transfers the incoming call notification to the peripheral terminals using short-range wireless communication. For this reason, the mobile terminal 100 according to the present embodiment can transfer the incoming call notification using the short-range wireless communication that consumes less power than the wireless communication performed by the wireless communication unit, thereby further reducing the power consumption. Can be reduced.

[program]
Various processes such as the main process, the group formation process, the peripheral terminal response reception process, the group reception process, and the group notification process described in the above embodiments are realized by executing a prepared program on a computer. Can do. In the following, with reference to FIG. 25, a computer that executes a mobile terminal control program having a function of executing various processes described in the above embodiment will be described using a mobile terminal as an example.

  FIG. 25 is a hardware configuration diagram of a mobile terminal that executes the mobile terminal control program. As illustrated in FIG. 25, the mobile terminal 1000 includes an antenna 1010, a wireless communication unit 1020, a display unit 1030, a voice input / output unit 1040, a microphone 1041, a speaker 1042, a key input unit 1050, and a short-range wireless communication unit 1060. The mobile terminal 1000 includes a storage unit 1070 and a processor 1080.

  Wireless communication unit 1020, display unit 1030, voice input / output unit 1040, key input unit 1050, short-range wireless communication unit 1060, and storage unit 1070 are connected to processor 1080. The antenna 1010 is connected to the wireless communication unit 1020. The microphone 1041 and the speaker 1042 are connected to the audio input / output unit 1040.

  The wireless communication unit 1020 corresponds to, for example, the wireless communication unit 130 illustrated in FIG. The display unit 1030 corresponds to, for example, the output unit 120 illustrated in FIG. The voice input / output unit 1040, the microphone 1041, and the speaker 1042 collect the voice output received from other portable terminals, the voice of the operator, and the like and input them to the processor 1080. The key input unit 1050 is, for example, an operation key, and corresponds to the input unit 110 illustrated in FIG.

  The storage unit 1070 and the processor 1080 implement functions such as the peripheral terminal recognition unit 161, the reception order determination unit 162, the incoming notification reception unit 163, the incoming notification transfer unit 164, and the terminal group information table 151 illustrated in FIG. Specifically, the program storage unit 1071 of the storage unit 1070 is a portable device that realizes processing by the peripheral terminal recognition unit 161, the reception order determination unit 162, the incoming notification reception unit 163, the incoming notification transfer unit 164, and the like illustrated in FIG. Various programs such as a terminal control program are stored. Then, the processor 1080 reads out these programs and executes them on the RAM 1073, thereby generating a process for realizing each function described above. Further, the data storage unit 1072 stores, for example, the terminal group information table 151 shown in FIG.

10 base station 10a cell 100, 100a to 100n mobile terminal 110 input unit 120 output unit 130 wireless communication unit 140 short-range wireless communication unit 150 storage unit 151 terminal group information table 160 control unit 161 peripheral terminal recognition unit 162 reception order determination unit 163 Incoming notification reception unit 164 Incoming notification transfer unit 1000 Mobile terminal 1010 Antenna 1020 Wireless communication unit 1030 Display unit 1040 Audio input / output unit 1041 Microphone 1042 Speaker 1050 Key input unit 1060 Short-range wireless communication unit 1070 Storage unit 1071 Program storage unit 1072 Data storage Part 1073 RAM
1080 processor

Claims (8)

A peripheral terminal recognition unit for recognizing peripheral terminals that are other mobile terminals existing around the own terminal among a plurality of mobile terminals located in the cell of the same base station;
A receiving order determining unit that determines a receiving order in which the peripheral terminal recognized by the peripheral terminal recognizing unit and its own terminal receive incoming notifications from the base station in order;
An incoming call notification receiving unit for receiving an incoming call notification from the base station in the receiving order determined by the receiving order determining unit;
An incoming call notification transfer unit configured to transfer the incoming call notification to the peripheral terminal serving as a destination when the destination of the incoming call notification received by the incoming call notification receiving unit is the peripheral terminal. Mobile terminal. The peripheral terminal recognition unit periodically excludes absent terminals that are other portable terminals that no longer exist in the vicinity from the peripheral terminal,
The reception order determination unit sequentially receives incoming notifications from the base station when the peripheral terminal is excluded from the peripheral terminal by the peripheral terminal recognition unit and the peripheral terminal and the own terminal after exclusion of the absent terminal are received. The mobile terminal according to claim 1, wherein the receiving order is determined again. The incoming call notification receiving unit, when receiving the incoming call notification, broadcast information for notifying that a message transmitted simultaneously to a plurality of mobile terminals located in the cell of the base station has been delivered to the base station Receive
3. The mobile terminal according to claim 1, wherein when the notification information is received by the incoming notification notification receiving unit, the incoming notification transfer unit transfers the notification information all at once to the peripheral terminals. . The incoming call notification receiving unit further receives the message after receiving the broadcast information,
The mobile terminal according to claim 3, wherein the incoming notification transfer unit transfers the message all at once to the peripheral terminals when the message is received by the incoming notification reception unit. It further comprises a short-range wireless communication unit that performs short-range wireless communication with other mobile terminals,
The mobile terminal according to claim 1, wherein the peripheral terminal recognition unit recognizes the peripheral terminal using short-range wireless communication performed by the short-range wireless communication unit. .   The mobile terminal according to claim 5, wherein the incoming notification transfer unit transfers the incoming notification to the peripheral terminal using short-range wireless communication performed by the short-range wireless communication unit. A mobile terminal control method executed by a mobile terminal,
Recognize peripheral terminals that are other mobile terminals around the terminal among the plurality of mobile terminals located in the cell of the same base station,
Determine the reception order in which the recognized peripheral terminal and its own terminal receive incoming notifications from the base station in order,
Receiving an incoming notification from the base station in the determined reception order;
When the destination of the received incoming notification is the peripheral terminal, the mobile terminal control method includes transferring the incoming notification to the peripheral terminal as the destination. On your mobile device,
Recognize peripheral terminals that are other mobile terminals around the terminal among the plurality of mobile terminals located in the cell of the same base station,
Determine the reception order in which the recognized peripheral terminal and its own terminal receive incoming notifications from the base station in order,
Receiving an incoming notification from the base station in the determined reception order;
A portable terminal control program that, when the destination of a received incoming notification is the peripheral terminal, executes a process of transferring the incoming notification to the peripheral terminal that is the incoming destination.

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