WO2015025452A1 - 呼処理制御装置、移動通信システム、呼接続要求の受け付け制限方法、及び可読媒体 - Google Patents
呼処理制御装置、移動通信システム、呼接続要求の受け付け制限方法、及び可読媒体 Download PDFInfo
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- WO2015025452A1 WO2015025452A1 PCT/JP2014/003523 JP2014003523W WO2015025452A1 WO 2015025452 A1 WO2015025452 A1 WO 2015025452A1 JP 2014003523 W JP2014003523 W JP 2014003523W WO 2015025452 A1 WO2015025452 A1 WO 2015025452A1
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- connection request
- base station
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- 238000000034 method Methods 0.000 title claims description 62
- 238000010295 mobile communication Methods 0.000 title claims description 40
- 230000007704 transition Effects 0.000 claims description 35
- 238000004891 communication Methods 0.000 claims description 30
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000007774 longterm Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 17
- 230000001186 cumulative effect Effects 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
Definitions
- the present invention relates to a call processing control device, a mobile communication system, a call connection request acceptance restriction method, and a program.
- Patent Document 1 discloses a mobile communication system capable of improving the utilization rate by performing a promotion that presents a favorable condition in terms of price to the user when the utilization rate of the network of the mobile communication system is low. ing.
- the radio base station by receiving usage promotion information from the core network, the radio base station reports the usage promotion information to the terminals under its control.
- Patent Document 2 discloses a mobile packet communication system capable of preventing an increase in transmission delay and preventing quality degradation while improving the utilization efficiency of a radio channel.
- this packet communication system when storing a packet call setting request transmitted by a mobile station, information stored in the storage unit is stored in the storage unit storing information on the currently set packet call. Based on this, a new call determination unit that determines whether or not the packet call is a new call, and an acceptance determination unit that determines whether or not to accept a setting request for the packet call determined to be a new call.
- the present invention has been made in order to solve such problems, and a call processing control device, a mobile communication system, and a mobile communication system capable of suppressing congestion while suppressing an influence on a call connection request having a high priority.
- An object of the present invention is to provide a call connection request acceptance restriction method and program.
- the call processing control device receives a call connection request from a mobile terminal and performs connection setting processing.
- the call processing control device determines a call type of a call connection request, and selects a call connection request based on a determination result as a reception type and a call type determination unit for selecting a call connection request as a reception determination target.
- An acceptance determination unit for determining whether or not to accept a call connection request.
- the mobile communication system includes a call processing control device that receives a call connection request from a mobile terminal and performs connection setting processing.
- the call processing control device determines a call type of a call connection request, and selects a call connection request based on a determination result as a reception type and a call type determination unit for selecting a call connection request as a reception determination target.
- An acceptance determination unit for determining whether or not to accept a call connection request.
- the call connection request acceptance restriction method determines a call type of a call connection request from a mobile terminal, and selects a call connection request as a reception determination target and a non-target based on a call type determination result, It is determined whether or not to accept a call connection request selected as a reception determination target.
- the program according to the present invention causes a computer to execute the call connection request acceptance restriction method.
- a call processing control apparatus it is possible to provide a call processing control apparatus, a mobile communication system, a call connection request acceptance restriction method, and a program capable of suppressing congestion while suppressing an influence on a call connection request having a high priority. Can do.
- FIG. 1 is a diagram showing a configuration of a mobile communication system according to Embodiment 1.
- FIG. 3 is a flowchart showing a call connection request acceptance restriction method according to the first embodiment. It is a figure which shows the structure of the mobile communication system by Embodiment 2.
- FIG. It is a figure which shows the structure of the core network of FIG. It is a figure which shows the structure of the wireless base station of FIG. It is a figure which shows the structure of the terminal of FIG.
- FIG. 4 is a sequence diagram illustrating an operation example of the mobile communication system in FIG. 3.
- FIG. 4 is a state transition diagram of the core network of FIG. 3. It is a determination flowchart for the transition to the MME utilization promotion state in the core network of FIG.
- FIG. 4 is a state transition diagram of the radio base station of FIG. 3. It is the determination flowchart for the transition to the eNB utilization promotion state in the radio base station of FIG. It is the determination flowchart for the transition to the eNB non-use promotion state in the radio base station of FIG. It is the determination flowchart for the transition to the terminal utilization promotion state / terminal non-use promotion state in the terminal of FIG. It is a flowchart in which a user transmits a promotion call using the terminal of FIG. 3 in a terminal use promotion state. It is a flowchart in which the terminal of FIG.
- FIG. 4 is a state transition diagram of the radio base station of FIG. 3.
- 10 is a flowchart showing a call connection request acceptance restriction method according to the second embodiment.
- FIG. 10 is a diagram illustrating a configuration of a radio base station according to a third embodiment.
- FIG. 10 is a state transition diagram of a radio base station according to the third embodiment.
- 10 is a flowchart illustrating a call connection request acceptance restriction method according to a third embodiment.
- 12 is a conceptual diagram showing a call connection request acceptance restriction method according to Embodiment 3.
- FIG. It is a figure which shows the structure of the mobile communication system by Embodiment 4.
- FIG. 10 is a flowchart showing a call connection request acceptance restriction method according to the second embodiment.
- FIG. 10 is a diagram illustrating a configuration of a radio base station according to a third embodiment.
- FIG. 10 is a state transition diagram of a radio base station according to the third embodiment.
- 10 is a flowchart illustrating
- the mobile communication system is, for example, a mobile phone network.
- the mobile communication system includes a call processing control device 20 and a plurality of terminals 30.
- the terminal 30 is movable.
- the call processing control device 20 includes a call type determination unit 21 and an acceptance determination unit 22.
- the terminal 30 transmits a call connection request 32 to the call processing control device 20.
- the call processing control device 20 transmits a connection setting message 33 or a connection rejection message 34 to the terminal 30.
- step S100 When the call processing control device 20 receives the call connection request 32 from the terminal 30 (step S100), the call type determination unit 21 determines the call type of the call connection request 32 (step S101), and calls based on the determination result.
- the connection request 32 is selected as a reception determination target and a non-target determination (step S102). If it is a reception determination target, the process proceeds to step S103. If it is not subject to acceptance determination, the process proceeds to step S106.
- the reception determination unit 22 determines whether or not to accept the call connection request 32 selected as a reception determination target (step S103). If it is determined to be accepted (acceptable in step S104), the process proceeds to step 106. If it is determined that the request is not accepted (cannot be accepted in step S104), the process proceeds to step S105. In step S ⁇ b> 105, the call processing control device 20 executes connection rejection processing for the call connection request 32. In the connection rejection process, the call processing control device 20 transmits a connection rejection message 34 to the terminal 30. After step S105, the process returns to step S100. In step S ⁇ b> 106, the call processing control device 20 executes connection setting processing for the call connection request 32. In the connection setting process, the call processing control device 20 transmits a connection setting message 33 to the terminal 30. After step S106, the process returns to step S100.
- the call type of the call connection request 32 is determined, and the call connection request 32 is selected as the reception determination target and the non-target based on the call type determination result. Therefore, the connection setting process is performed for the call connection request 32 determined to be a call type with a high priority, and the connection setting process is performed for the call connection request 32 determined to be a call type with a low priority by an acceptance determination. It is possible to determine whether to perform connection rejection processing. As a result, it is possible to suppress the congestion of the mobile communication system while suppressing the influence on the call connection request 32 having a high priority.
- the mobile communication system according to the second embodiment is an LTE (Long Term Evolution) mobile communication system.
- LTE Long Term Evolution
- the usage rate is improved by performing a promotion that presents the user with advantageous conditions in terms of price and the like.
- the mobile communication system according to the second embodiment is a mobile radio device used by a user and performs radio communication with a plurality of terminals 3 called UEs (User Equipment) in LTE and eNBs in LTE. It includes a radio base station 2 called Enhanced NodeB) and a core network 1 that is a higher-order network thereof called MME (Mobility Management Entity) and SGW (Serving Gateway) in LTE. As interfaces between the nodes, there are a radio RRC (Radio Resource Control) interface 13, an X2 interface 12 between the radio base stations 2, and an S1 interface 11 between the radio base station 2 and the core network 1.
- RRC Radio Resource Control
- the core network 1 is configured by an MME that performs network control and an SGW that handles user data, and performs service control, billing control, and connection to the Internet and a telephone network.
- the core network 1 may be referred to as a core network device.
- FIG. 4 is a diagram showing a configuration of the core network 1 of FIG.
- the resource usage rate determination unit 103 of the core network 1 measures the number of users connected to the MME and SGW itself and the amount of user data being processed, and determines the resource usage rate obtained by comparing with the permissible value. Compare with the value. When the resource usage rate is lower than the predetermined value, the control unit 101 of the core network 1 determines that the usage promotion is possible.
- the control unit 101 transmits the MME promotion start message 111 to the radio base station 2 connected through the S1 interface 11 using the communication unit 102.
- the MME promotion start message 111 is information that tells the radio base station 2 under the core network 1 the start of use promotion that prompts the terminal to communicate.
- the wireless base station 2 is a device that performs wireless communication with the terminal 3 and has a role of relaying user data between the terminal 3 and the core network 1 under the control of the upper core network 1.
- FIG. 5 is a diagram showing the configuration of the radio base station 2 of FIG.
- the radio base station 2 receives the MME promotion start message 111 from the core network 1 using the communication unit 202, and determines that the connected core network 1 is in the use promotion state.
- the resource utilization rate determination unit 203 of the radio base station 2 measures the number of users connected to the radio base station 2, the amount of data being processed, radio resources, and the amount of transmission path information of the S1 and X2 interfaces. The resource utilization rate obtained by comparing with the allowable value is compared with a predetermined value. When the resource usage rate is lower than the predetermined value, the control unit 201 of the radio base station 2 determines that the usage promotion is possible.
- the control unit 201 uses the wireless communication unit 205 to transmit the eNB promotion message 131 to the terminal 3 existing within the wireless coverage of the local station through the RRC interface 13.
- the eNB promotion message 131 is information that conveys usage promotion that promotes communication to the terminals 3 under the radio base station 2.
- the eNB promotion message 131 may be notified to the subordinate terminals 3 at once using broadcast information (System Information).
- the radio base station 2 corresponds to the call processing control device 20 according to the first embodiment.
- the radio base station 2 includes a timer 206, a call type determination unit 207, an acceptance determination unit 208, and a random number generation unit 209.
- the call type determination unit 207 and the reception determination unit 208 correspond to the call type determination unit 21 and the reception determination unit 22 according to the first embodiment, respectively.
- the terminal 3 is a wireless device that allows a user to perform voice calls and data transmission / reception.
- FIG. 6 is a diagram showing a configuration of the terminal 3 of FIG.
- the terminal 3 receives the eNB promotion message 131 from the radio base station 2 using the radio communication unit 302, and determines that the core network 1 and the radio base station 2 are in the use promotion state. Then, the control unit 301 of the terminal 3 displays a message for prompting the user to perform communication using the own terminal on the display unit 303, and starts communication as a promotion call by the user's operation viewing the display. Alternatively, data transmission / reception is automatically started as a promotion call regardless of manual transmission by the user. The automatic transmission is performed by the control unit 301 according to the determination result of the automatic transmission determination unit 304 of the terminal 3.
- An MME promotion start message 111 that flows from the core network 1 toward the radio base station 2 is provided at the S1 interface 11 between the radio base station 2 and the core network 1.
- the MME promotion start message 111 is a message for notifying that the MME is in the use promotion state, and is used for determining the core network identification ID, the message expiration date, the QOS type and data amount of the call that can be used for promotion, and accepting the promotion call.
- a unique value such as an MME promotion code (core network determination information) can be included.
- an MME promotion stop message 112 that flows from the core network 1 toward the radio base station 2 is provided in the S1 interface 11. This notifies that the MME has entered a non-use promotion state.
- the eNB promotion message 131 that flows from the radio base station 2 toward the terminal 3 is provided in the RRC interface 13.
- the eNB promotion message 131 is a message periodically transmitted when the eNB is in a use promotion state.
- the eNB promotion message 131 includes an eNB cell identification ID, a message expiration date, a QOS type and data amount of a call that can be promoted for use, and an eNB promotion code (information for determining a radio base station) that is a unique value used to determine whether or not to accept a promotion call. ), An MME promotion code received from the core network 1, and the like.
- the terminal 3 transmits an RRC connection request message 132 to the radio base station 2 via the RRC interface 13, and the radio base station 2 transmits an RRC connection setup message 133 and an RRC connection rejection message 134 to the terminal 3.
- the terminal 3 corresponds to the terminal 30 according to the first embodiment.
- the RRC connection request message 132, the RRC connection setup message 133, and the RRC connection rejection message 134 correspond to the call connection request 32, the connection setup message 33, and the connection rejection message 34 according to the first embodiment, respectively.
- FIG. 7 is a sequence diagram showing an operation example in the mobile communication system shown in FIG.
- the MME promotion start message 111 is transmitted to the radio base station 2 on the S1 interface (step S2).
- the radio base station 2 that has received the MME promotion start message 111 enters the eNB utilization promotion state (step S3), and periodically transmits an eNB promotion message 131 to the terminal 3 on the RRC interface (step S4).
- the terminal 3 Upon receiving the eNB promotion message 131, the terminal 3 transmits an RRC connection request message 132 to the radio base station 2 on the RRC interface through the process of sending a promotion call (step S5). At this time, the eNB promotion code and the MME promotion code received by the eNB promotion message 131 are transmitted to the radio base station 2. The radio base station 2 that has received the eNB promotion code and the MME promotion code from the terminal 3, and the eNB promotion code and the MME promotion code that the local station has transmitted to the terminal 3 using the eNB promotion message 131 in step S4, The call type of the RRC connection request message 132 is determined by comparison (step S7).
- the radio base station 2 determines that the RRC connection request message 132 is a promotion call, and further determines whether to accept the connection of the terminal 3 by executing an acceptance decision (step S7).
- the radio base station 2 executes a connection setting process in step S8. In the connection setting process, the radio base station 2 makes a call connection request to the core network 1 and transmits an RRC connection setting message 133 to the terminal 3.
- the call connection request includes the MME promotion code received from the terminal 3 and is included in the Initial UE message or NAS message on the S1 interface.
- the core network 1 that has received the call connection request including the MME promotion code compares the code with the MME promotion code when the MME promotion start message 111 is transmitted in step S2. If both are the same, the core network 1 determines that the call connection request including the MME promotion code is a promotion call. In the billing process, the core network 1 applies a special fee such as a discount or a fixed amount for communication based on a call connection request determined as a promotion call.
- step S7 If it is determined in step S7 that the connection of the terminal 3 is not accepted, the radio base station 2 executes a connection rejection process in step S8. In the connection rejection process, the radio base station 2 transmits an RRC connection rejection message 134 to the terminal 3.
- FIG. 8 is a state transition diagram of the core network 1 of FIG.
- the core network 1 has two states, an MME usage promotion state S15 and an MME non-use promotion state S16.
- the core network 1 in the MME utilization promotion state S15 transmits the MME promotion start message 111 to the radio base station 2 on the S1 interface, and when the call connection request of the promotion call from the radio base station 2 is made, the MME promotion code matches Confirm and accept the promotional call.
- the core network 1 in the MME non-use promotion state S16 transmits an MME promotion stop message 112 on the S1 interface, rejects the call connection request for the promotion call from the radio base station 2, and disconnects the connected promotion call. To do.
- FIG. 9 is a determination flowchart for transition to the MME utilization promotion state S15 in the core network 1 of FIG.
- the core network 1 in the MME non-use promotion state S16 determines that the resource usage rate of the core network 1 is lower than the threshold value a (step S17)
- the state transitions to the MME use promotion state S15.
- the resource utilization rate is a ratio of permissible amounts of values such as hardware processing load of MME and SGW, information amount on hardware interface, number of connected users and data amount.
- FIG. 10 is a determination flowchart for transition to the MME non-use promotion state S16 in the core network 1 of FIG.
- the core network 1 in the MME utilization promotion state S15 determines that the resource utilization rate of the core network 1 is higher than the threshold value b (step S18)
- the state transitions to the MME non-promotion state S16.
- the resource utilization rate is a ratio of permissible amounts of values such as hardware processing load of MME and SGW, information amount on hardware interface, number of connected users and data amount.
- FIG. 11 is a state transition diagram of the radio base station 2 of FIG.
- the radio base station 2 has an eNB usage promotion state S21 and an eNB non-use promotion state S22.
- the radio base station 2 in the eNB usage promotion state S21 can periodically transmit the eNB promotion message 131 to the terminal 3 on the RRC interface, and can accept the RRC connection request 132 of the promotion call from the terminal 3. is there.
- the radio base station 2 in the eNB non-use promotion state S22 stops transmitting the eNB promotion message 131 on the RRC interface, rejects the RRC connection request 132 of the promotion call from the terminal 3, and disconnects the connected promotion call To do.
- FIG. 12 is a determination flowchart for transition to the eNB utilization promotion state S21 in the radio base station 2 of FIG.
- the radio base station 2 in the eNB non-use promotion state S22 receives the MME promotion start message 111 from the core network 1 (step S23)
- the radio base station 2 proceeds to step S24.
- step S24 when the radio base station 2 determines that the resource utilization rate of the radio base station 2 is lower than the threshold value c, the state transitions to the eNB utilization promotion state S21.
- the resource usage rate is a hardware processing load of the wireless base station 2, an information amount on the S1 or X2 interface, wireless transmission / reception power, the number of connected users, and a permissible amount ratio of each value of data.
- FIG. 13 is a determination flowchart for transition to the eNB non-use promotion state S22 in the radio base station 2 of FIG.
- the radio base station 2 in the eNB usage promotion state S21 receives the MME promotion stop message 112 from the core network 1 (step S25)
- the state transitions to the eNB non-use promotion state S22.
- the radio base station 2 determines that the resource utilization rate of the radio base station 2 is higher than the threshold d (step S26)
- the eNB non-use promotion state S22 is entered.
- the resource usage rate is a hardware processing load of the wireless base station 2, an information amount on the S1 or X2 interface, wireless transmission / reception power, the number of connected users, and a permissible amount ratio of each value of data.
- FIG. 14 is a determination flowchart for transition to the terminal use promotion state / terminal non-use promotion state in the terminal 3 of FIG.
- the terminal 3 has two states, a terminal use promotion state S31 and a terminal non-use promotion state S32. In either state, when the terminal 3 periodically confirms receipt of the eNB promotion message 131 on the RRC interface from the radio base station 2 (step S33), the terminal 3 transits to the terminal use promotion state S31.
- the terminal 3 uses the terminal The promotion state S31 is continued, and when it is determined that the expiration date is outside (step S34), the terminal transitions to the terminal non-use promotion state S32. Note that the terminal 3 in the terminal non-use promotion state S32 cannot make a promotion call.
- FIG. 15 is a flowchart in which the user sends a promotion call using the terminal 3 of FIG. 3 in the terminal use promotion state S31.
- the terminal 3 that has transitioned to the terminal use promotion state S31 displays on the display unit 303 a prompt for use (prompt for communication using the terminal 3) (step S42).
- a prompt for use for communication using the terminal 3)
- it is a display that presents a call condition such as a price that is advantageous to the user, such as “20% call charge discounting”, “Flat-rate charge applied until 24:00”, and the like.
- a call condition such as a price that is advantageous to the user, such as “20% call charge discounting”, “Flat-rate charge applied until 24:00”, and the like.
- As the display content information included in the eNB promotion message 131 notified from the radio base station 2 may be used.
- the terminal 3 transmits an RRC connection request 132 including the eNB promotion code and the MME promotion code to the radio base station 2 (step S44). ). Thereafter, when the connection setting process (step S8) is performed, the communication of the promotion call is started.
- FIG. 16 is a flowchart in which the terminal 3 of FIG. 3 that has transitioned to the terminal use promotion state S31 automatically issues a promotion call.
- the terminal 3 in the terminal non-use promotion state S32 holds data to be transmitted in a memory (not shown), and holds a list of reception candidate data in the memory (step S51).
- step S52 a promotion call automatic call determination is performed (step S53).
- the determination condition is based on the conditions (message expiration date, call allowable QOS type and data amount) sent from the radio base station 2 in the eNB promotion message 131, and whether the data scheduled to be transmitted / received can be transmitted / received within the message expiration date, Whether the transmission / reception of the data scheduled to be transmitted / received can be satisfied by the designated QOS, or whether the data amount scheduled for transmission / reception is within the designated range.
- the terminal 3 If there is data that satisfies the condition in the automatic call determination for promotion call, the terminal 3 sends an eNB promotion code and an MME promotion code to transmit to the predetermined transmission destination of the data or to receive from the predetermined reception destination of the data. Including the RRC connection request 132 is transmitted to the radio base station 2 (step S54). Thereafter, when the connection setting process (step S8) is performed, the communication of the promotion call is started.
- data that does not require prompt reporting is transmitted as data scheduled to be transmitted when the terminal 3 transitions to the terminal use promotion state S31.
- Examples of data include: • Sales information for one day, aggregated with vending machines equipped with terminal 3 • Electricity / gas usage information, aggregated with various meters equipped with terminal 3 • Terminal 3 provided Geographical information collected by the vehicle, weather, environmental information collected by the sensor equipped with the terminal 3, radio wave environment, location information collected by the terminal 3, terminal usage status of the user (traffic volume, service call type, (Communication quality, time, etc.), e-mail, game score / result, photo, video, music, document, software, personal information, bulletin board posting, database, etc., reserved by the user of terminal 3 for transmission.
- data that does not need to be reported promptly is listed in advance as reception candidate data, and is received when the terminal 3 transitions to the terminal usage promotion state S31. Conceivable. After reception, the user can use the information offline.
- Examples of data include: ⁇ Information such as update software, middleware, database, etc. applied to the terminal 3 itself, a computer, vending machine, machine etc. equipped with the terminal 3; , Game software, photos, videos, music, documents, books, software, news, bulletin board postings, TV program guides, weather information, map information, product price information, databases, RSS feed information (used for news sites, blogs, podcast distribution) ) Etc. are conceivable.
- FIG. 17 is a state transition diagram of the radio base station 2 of FIG.
- the radio base station 2 has an acceptance determination non-execution state S61 based on the call type and an acceptance determination execution state S62 based on the call type.
- the radio base station 2 transitions from the acceptance determination non-execution state S61 based on the call type to the acceptance determination execution state S62 based on the call type.
- the timer 206 starts counting.
- the radio base station 2 transits from the acceptance determination execution state S62 based on the call type to the acceptance determination non-execution state S61 based on the call type.
- the call type determination unit 207 determines the call type of the RRC connection request 132, and based on the call type determination result, the RRC connection request 132 is subject to reception determination. Do not execute processing to sort out.
- the reception determination unit 208 does not execute a process of determining whether or not to accept the RRC connection request 132 selected as a reception determination target.
- the call type determination unit 207 determines the call type of the RRC connection request 132, and based on the call type determination result, the RRC connection request 132 is not subject to the reception determination. Execute the process of sorting.
- the reception determination unit 208 executes processing for determining whether or not to accept the RRC connection request 132 selected as a reception determination target.
- FIG. 18 is a flowchart showing a call connection request acceptance restriction method executed by the radio base station 2 in the acceptance judgment execution state S62 based on the call type.
- Steps S71 to S74 correspond to step S7 in FIG.
- Steps S75 to S77 correspond to step S8 in FIG.
- the call type determination unit 207 determines whether the RRC connection request 132 is a promotion call (step S72), and determines that the RRC is a promotion call.
- the connection request 132 is selected as a reception determination target (YES in step S72), and the RRC connection request 132 that has not been determined as a promotion call is selected out of the reception determination target (NO in step S72).
- the call type determination unit 207 sends an MME promotion start message for prompting communication to the terminal 3 transmitted from the core network 1 that has transitioned to the MME utilization promotion state when the resource utilization rate of the core network 1 is smaller than a predetermined threshold.
- the radio base station 2 receives 111, and the resource utilization rate of the radio base station 2 is smaller than a predetermined threshold, the terminal 3 transmitted from the radio base station 2 that has transitioned to the eNB utilization promotion state is urged to communicate
- the eNB promotion message 131 is received, the RRC connection request 132 transmitted when the terminal 3 transitions to the terminal use promotion state is determined to be a promotion call.
- the call type determination unit 207 determines whether or not the call is a promotion call based on the MME promotion code (core network determination information) and the eNB promotion code (radio base station determination information) included in the RRC connection request 132. I do. Note that the call type determination unit 207 may perform the determination based only on the eNB promotion code (radio base station determination information).
- the random number generator 209 When it is determined that the RRC connection request 132 is a promotion call (YES in step S72), the random number generator 209 generates a random number Y (any one of 1-100) (step S73).
- the acceptance determination unit 208 determines whether the random number Y is greater than a predetermined value N (step S74). When the random number Y is larger than the value N (YES in step S74), the reception determination unit 208 determines that the RRC connection request 132 is not received, and the radio base station 2 executes a connection rejection process (step S75). In the connection rejection process, the control unit 201 causes the wireless communication unit 205 to transmit an RRC connection rejection message 134.
- the reception determination unit 208 determines that the RRC connection request 132 is received, and the radio base station 2 executes a connection setting process (step S76).
- the control unit 201 causes the communication unit 202 to transmit a call connection request to the core network 1 and causes the wireless communication unit 205 to transmit an RRC connection setting message 133.
- the call connection request includes the MME promotion code (core network determination information) included in the RRC connection request 132.
- the radio base station 2 executes a connection setting process (step S77).
- the control unit 201 causes the communication unit 202 to transmit a call connection request to the core network 1 and causes the wireless communication unit 205 to transmit an RRC connection setting message 133.
- the RRC connection request 132 determined to be a promotion call is considered to have low priority, and therefore is determined to be accepted with a predetermined probability (N%) higher than 0% and lower than 100%. It becomes a target of connection setting processing.
- the RRC connection request 132 that has not been determined to be a promotion call is subject to connection setting processing with a probability of 100%.
- the call type determination unit 207 determines the call type of the RRC connection request 132, and determines the RRC connection request 132 based on the determination result.
- a process of selecting the reception determination target and the reception determination target is started, and the reception determination unit 208 starts a process of determining whether or not to accept the RRC connection request 132 selected as the reception determination target.
- the call type determination unit 207 determines the call type of the RRC connection request 132 and determines whether to accept the RRC connection request 132 based on the determination result.
- the reception determination unit 208 stops the process of determining whether or not to accept the RRC connection request 132 selected as the reception determination target.
- acceptance of a promotion call is limited only for a certain period (a period of X seconds) after the start of transmission of the eNB promotion message 131. Since the acceptance of the promotion call is restricted only during a period when there is a high possibility that the promotion call will occur at the same time, the acceptance of the promotion call is prevented from being unnecessarily restricted.
- the values N and X may be set in advance in the radio base station 2 or may be notified from the core network 1 to the radio base station 2.
- the radio base station 2 according to the third embodiment has a control unit 201, a communication unit 202, a resource utilization rate determination unit 203, a radio communication unit 205, a timer 206, a call, A type determination unit 207 and an acceptance determination unit 208 are provided.
- the radio base station 2 according to the third embodiment further includes a repetition number counter 210 and a cumulative call connection request number counter 211.
- FIG. 20 is a state transition diagram of the radio base station 2.
- the radio base station 2 has an acceptance determination non-execution state S61 based on the call type and an acceptance determination execution state S62 based on the call type.
- the radio base station 2 transitions from the acceptance determination non-execution state S61 based on the call type to the acceptance determination execution state S62 based on the call type.
- the timer 206 starts counting from the initial value, and the repetition number counter 210 is reset to zero.
- the radio base station 2 changes from the admission determination execution state S62 based on the call type to the call type. Based on the acceptance determination execution state S62 based. At this time, the timer 206 starts counting from the initial value, and the repetition number counter 210 is incremented. If the value of the repetition number counter 210 is equal to the predetermined repetition number M when the timer 206 counts the predetermined time A, the radio base station 2 determines whether to accept based on the call type from the admission determination execution state S62 based on the call type. Transition to the non-execution state S61.
- FIG. 21 is a flowchart showing a call connection request acceptance restriction method executed by the wireless base station 2 in the acceptance judgment execution state S62 based on the call type.
- Steps S81 to S85 correspond to step S7 in FIG.
- Steps S86 to S88 correspond to step S8 in FIG.
- the cumulative call connection request counter 211 is reset to 0 (step S81).
- the call type determination unit 207 determines whether the RRC connection request 132 is a promotion call (step S83), and determines that the RRC is a promotion call.
- connection request 132 is selected as a reception determination target (YES in step S83), and the RRC connection request 132 that has not been determined as a promotion call is selected out of the reception determination target (NO in step S83).
- Step S83 is the same as step S72.
- the cumulative call connection request counter 211 is incremented (step S84).
- the acceptance determination unit 208 determines whether the value of the cumulative call connection request counter 211 is greater than the set value B (step S85).
- the set value B is a natural number.
- the reception determination unit 208 determines that the RRC connection request 132 is not received, and the radio base station 2 executes a connection rejection process. (Step S86).
- the connection rejection process at step S86 is the same as the connection rejection process at step S75.
- Step S87 If the value of the cumulative call connection request counter 211 is not greater than the set value B (NO in step S85), the reception determination unit 208 determines that the RRC connection request 132 is received, and the radio base station 2 executes connection setting processing. (Step S87).
- the connection setting process in step S87 is the same as the connection setting process in step S76.
- the radio base station 2 executes a connection setting process (step S88).
- the connection setting process in step S88 is the same as the connection setting process in step S77.
- FIG. 22 is a conceptual diagram illustrating a call connection request acceptance restriction method according to the third embodiment.
- the horizontal axis is the elapsed time from when transmission of the eNB promotion message 131 is started.
- the vertical axis represents the cumulative number of RRC connection requests 132 determined as a promotion call, that is, the value of the cumulative call connection request counter 211.
- reception determination unit 208 receives a predetermined number B of RRC connection requests 132 out of RRC connection requests 132 selected as reception determination targets in the period of A seconds, and thereafter.
- the process of determining that the RRC connection request 132 is not accepted is repeated M times. Therefore, according to the present embodiment, acceptance of a promotion call is limited only for a certain period (a period of M ⁇ A seconds) after the start of transmission of the eNB promotion message 131.
- the values A, B, and M may be set in advance in the radio base station 2 or may be notified from the core network 1 to the radio base station 2.
- the mobile communication system according to the fourth embodiment realizes the function of the mobile communication system according to the second or third embodiment by a mobile communication system of WCDMA (Wideband Code Multiple Access) (registered trademark).
- WCDMA Wideband Code Multiple Access
- the mobile communication system according to the fourth embodiment is a mobile radio device used by a user, and in WCDMA, a plurality of terminals 503 called UE (User Equipment), and performs wireless communication with the terminal 503 and NodeB in WCDMA.
- UE User Equipment
- a wireless base station 502B, a wireless network control station 502A that controls the wireless base station 502B, and a core network 501 that is a higher level network thereof are included.
- Radio network control station 502A may be referred to as RNC. These nodes are connected by an interface.
- the terminal 503, the radio network control station 502A, and the core network 501 correspond to the terminal 3, the radio base station 2, and the core network 1, respectively.
- the core network 501 transmits a promotion start message 611 and a promotion stop message 612 to the radio network control station 502A.
- Promotion start message 611 and promotion stop message 612 correspond to MME promotion start message 111 and MME promotion stop message 112, respectively.
- the wireless network control station 502A transmits a promotion message 631, a connection setting message 633, and a connection rejection message 634 to the terminal 503 via the wireless base station 502B.
- the terminal 503 transmits a connection request message 632 to the radio network control station 502A via the radio base station 502B.
- the promotion message 631, the connection request message 632, the connection setting message 633, and the connection rejection message 634 correspond to the eNB promotion message 131, the RRC connection request message 132, the RRC connection setting message 133, and the RRC connection rejection message 134, respectively.
- the core network 501 When the resource utilization rate of the core network 501 is smaller than a predetermined threshold, the core network 501 changes the core network determination information to the promotion start message 611 for transitioning to the core network utilization promotion state and prompting the terminal 503 to communicate. Including them and transmitting them to the radio network control station 502A.
- the radio network control station 502A When the radio network control station 502A receives the promotion start message 611, the radio network control station 502A transitions to the radio base station utilization promotion state when the resource utilization rate of the radio base station 502B under the radio network control station 502A is smaller than a predetermined threshold. To do.
- the radio network control station 502A that has transitioned to the radio base station utilization promotion state includes the core network determination information and the radio base station determination information in the promotion message 631 for prompting the terminal 503 to communicate via the radio base station 502B. Transmit to the terminal 503.
- the terminal 503 When the terminal 503 receives the promotion message 631, the terminal 503 transitions to the terminal use promotion state, includes the core network determination information and the radio base station determination information in the connection request message 632, and transmits to the radio network control station 502A the radio base station 502B. To send through.
- the radio network control station 502A determines that the connection request message 632 is a promotion call and determines whether to accept the connection request message 632 Select the target. When the radio network control station 502A determines to accept the connection request message 632, the radio network control station 502A transmits a connection setting message 633 to the terminal 503 via the radio base station 502B. If the radio network control station 502A determines not to accept the connection request message 632, the radio network control station 502A transmits a connection rejection message 634 to the terminal 503 via the radio base station 502B.
- both a promotion call and a normal call may be selected as targets for acceptance determination.
- emergency calls may be screened out of the reception determination target, and other calls may be screened out as the reception determination target.
- the call connection request acceptance restriction method may be realized by a computer executing a program.
- Non-transitory computer readable media include various types of tangible storage media.
- Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)).
- the program may be supplied to the computer by various types of temporary computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
- the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
Abstract
Description
図1を参照して、実施の形態1にかかる移動通信システムの構成を説明する。移動通信システムは、例えば携帯電話網である。移動通信システムは、呼処理制御装置20と、複数の端末30とを備える。端末30は、移動可能である。呼処理制御装置20は、呼種別判定部21と、受付判定部22とを備える。端末30は、呼接続要求32を呼処理制御装置20に送信する。呼処理制御装置20は、接続設定メッセージ33又は接続拒否メッセージ34を端末30に送信する。
次に、実施の形態2にかかる移動通信システムを説明する。実施の形態2にかかる移動通信システムは、LTE(Long Term Evolution)の移動通信システムである。実施の形態2にかかる移動通信システムは、ネットワークの利用率が低いときにユーザに価格等の面で有利な条件を提示するプロモーションを行うことにより利用率の向上を図る。
次に、実施の形態3にかかる移動通信システムを説明する。実施の形態3にかかる移動通信システムは、下記の点が実施の形態2にかかる移動通信システムから変更されている。以下において、実施の形態2と共通する事項及び実施の形態2から自明な事項の説明を省略する。
次に、実施の形態4にかかる移動通信システムを説明する。実施の形態4にかかる移動通信システムは、実施の形態2又は3にかかる移動通信システムの機能をWCDMA(Wideband Code Division Multiple Access)(登録商標)の移動通信システムで実現したものである。以下において、実施の形態2及び3と共通する事項及び実施の形態2及び3から自明な事項の説明を省略する。
2 無線基地局
3 端末
20 呼処理制御装置
21 呼種別判定部
22 受付判定部
30 端末
32 呼接続要求
111 MMEプロモーション開始メッセージ
131 eNBプロモーションメッセージ
132 RRC接続要求メッセージ
207 呼種別判定部
208 受付判定部
501 コアネットワーク
502A 無線ネットワーク制御局
502B 無線基地局
503 端末
611 プロモーション開始メッセージ
632 接続要求メッセージ
Claims (10)
- 移動端末からの呼接続要求を受け付けて接続設定処理を行う呼処理制御装置であって、
呼接続要求の呼種別を判定し、判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別する呼種別判定手段と、
受付判定の対象に選別された呼接続要求を受け付けるか否か判定する受付判定手段と
を具備する
呼処理制御装置。 - 前記受付判定手段は、受付判定の対象に選別された呼接続要求を所定の確率で受け付けると判定する
請求項1に記載の呼処理制御装置。 - 前記受付判定手段は、所定の長さの期間において受付判定の対象に選別された呼接続要求のうち所定の数の呼接続要求を先着順で受け付けると判定する処理を繰り返す
請求項1に記載の呼処理制御装置。 - 前記呼処理制御装置は、LTE(Long Term Evolution)の移動通信システムの無線基地局であり、
前記呼種別判定手段は、前記LTEの移動通信システムのコアネットワークのリソース利用率が所定の閾値より小である場合にコアネットワーク利用促進状態に遷移した前記コアネットワークから送信される移動端末に通信を促すためのコアネットワーク利用促進メッセージを前記呼処理制御装置が受信したときに前記呼処理制御装置のリソース利用率が所定の閾値より小である場合に無線基地局利用促進状態に遷移した前記呼処理制御装置から送信される移動端末に通信を促すための無線基地局利用促進メッセージを受信した場合に、移動端末が端末利用促進状態に遷移したことにより発信された呼接続要求を受付判定の対象に選別する
請求項1乃至3のいずれか1項に記載の呼処理制御装置。 - 前記呼処理制御装置は、WCDMA(Wideband Code Division Multiple Access)の移動通信システムの無線ネットワーク制御局であり、
前記呼種別判定手段は、前記WCDMAの移動通信システムのコアネットワークのリソース利用率が所定の閾値より小である場合にコアネットワーク利用促進状態に遷移した前記コアネットワークから送信される移動端末に通信を促すためのコアネットワーク利用促進メッセージを前記呼処理制御装置が受信したときに前記呼処理制御装置の配下の無線基地局のリソース利用率が所定の閾値より小である場合に無線基地局利用促進状態に遷移した前記呼処理制御装置が前記無線基地局を介して送信する移動端末に通信を促すための無線基地局利用促進メッセージを受信した場合に、移動端末が端末利用促進状態に遷移したことにより発信された呼接続要求を受付判定の対象に選別する
請求項1乃至3のいずれか1項に記載の呼処理制御装置。 - 前記無線基地局利用促進メッセージの送信が開始されると、前記呼種別判定手段は呼接続要求の呼種別を判定し、判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別する処理を開始し、前記受付判定手段は受付判定の対象に選別された呼接続要求を受け付けるか否か判定する処理を開始し、
前記無線基地局利用促進メッセージの送信が開始されたときから所定の時間が経過すると、前記呼種別判定手段は呼接続要求の呼種別を判定し、判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別する処理を停止し、前記受付判定手段は受付判定の対象に選別された呼接続要求を受け付けるか否か判定する処理を停止する
請求項4又は5に記載の呼処理制御装置。 - 前記コアネットワークは、前記コアネットワーク利用促進メッセージにコアネットワーク判定用情報を含めて送信し、
前記呼処理制御装置は、前記無線基地局利用促進メッセージに前記コアネットワーク判定用情報及び無線基地局判定用情報を含めて送信し、
前記無線基地局利用促進メッセージを受信した前記移動端末は、端末利用促進状態に遷移したことにより発信される前記呼接続要求に前記コアネットワーク判定用情報及び前記無線基地局判定用情報を含めて送信し、
前記呼種別判定手段は、端末利用促進状態に遷移したことにより発信された前記呼接続要求に含まれた前記コアネットワーク判定用情報及び前記無線基地局判定用情報に基づいて、端末利用促進状態に遷移したことにより発信された前記呼接続要求を受付判定の対象に選別する
請求項4乃至6のいずれか1項に記載の呼処理制御装置。 - 移動端末からの呼接続要求を受け付けて接続設定処理を行う呼処理制御装置を具備し、
前記呼処理制御装置は、
呼接続要求の呼種別を判定し、判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別する呼種別判定手段と、
受付判定の対象に選別された呼接続要求を受け付けるか否か判定する受付判定手段と
を備える
移動通信システム。 - 移動端末からの呼接続要求の呼種別を判定し、
呼種別の判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別し、
受付判定の対象に選別された呼接続要求を受け付けるか否か判定する
呼接続要求の受け付け制限方法。 - 移動端末からの呼接続要求の呼種別を判定し、
呼種別の判定結果に基づいて呼接続要求を受付判定の対象と対象外に選別し、
受付判定の対象に選別された呼接続要求を受け付けるか否か判定する、
呼接続要求の受け付け制限方法をコンピュータに実行させるプログラムを格納した非一時的なコンピュータ可読媒体。
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US14/913,003 US9706595B2 (en) | 2013-08-23 | 2014-07-02 | Call processing control device, mobile communication system, method for restricting reception of call connection request, and readable medium |
EP14837350.9A EP3038406B1 (en) | 2013-08-23 | 2014-07-02 | Call processing control device, mobile communication system, method for restricting reception of call connection request, and readable medium |
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