JP2019029912A - Control device, communication terminal, service control device, communication system, data transmission method, and program - Google Patents

Abstract

To provide a control device that can prevent shortage in memory capacity at a core network device and the entire core network.SOLUTION: A control device 10 according to an embodiment comprises: a control unit 11 to determine a parameter related paging per communication terminal; and a communication unit 12 to transmit a parameter related to paging of a communication terminal 50 determined by the control unit 11 to a service control device 20 that transmits the parameter related to paging of the communication terminal 50 to an application server 30 that provides services to a plurality of communication terminals.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a control device, a communication terminal, a service control device, a communication system, a data transmission method, and a program.

  In recent years, using a general mobile network, not only ordinary mobile phones but also data terminals, sensors, vending machines, automobiles, and other devices that do not require human operation are being studied. . The target device is referred to as an IoT (Internet of Things) terminal, an MTC (Machine Type Communication) terminal, or the like. In the future, it is assumed that many IoT terminals and the like communicate via a mobile network.

  In order to eliminate battery replacement work or reduce the frequency of battery replacement, IoT terminals are required to reduce power consumption. Non-Patent Document 1 and Non-Patent Document 2 disclose an eDRX (extended Discontinuous Reception) function that makes it possible to reduce the frequency of receiving a paging channel in an IoT terminal. By introducing the eDRX function, an IoT terminal that supports the eDRX function can set the Paging Channel reception interval to about 46 minutes.

3GPP TS24.301 V14.4.0 (2017-06) 5.13a 3GPP TS23.682 V15.1.0 (2017-06) 4.5.13

  The timing at which the IoT terminal receives the Paging Channel is different for each IoT terminal. Data destined for the IoT terminal is generated at an arbitrary timing. Therefore, when data destined for the IoT terminal is generated in a state where the IoT terminal has not received the Paging Channel, the core network device needs to temporarily buffer the data. As the number of IoT terminals increases in the future, the amount of data buffered by the core network device also increases, which places a load on the core network device or the core network. Further, there is a problem that the memory capacity of the core network device is insufficient, and further, the memory capacity of the entire core network is also insufficient.

  In addition, when the eDRX function is introduced in the mobile network, the interval at which the IoT terminal receives the Paging Channel is increased, so that the time for buffering data becomes longer, and the core network device or the core network is further loaded. become. There is also a problem that the memory capacity of the core network device or the core network is insufficient.

  An object of the present disclosure is to provide a control device, a communication terminal, a service control device, a communication system, a data transmission method, and a control device capable of reducing the time for buffering data and reducing the load in the core network device or core network, and To provide a program.

  The control apparatus according to the first aspect of the present disclosure transmits a parameter related to the communication terminal to a control unit that determines a parameter related to paging for each communication terminal, and an application server that provides services to a plurality of communication terminals. A communication unit that transmits a parameter related to paging of the communication terminal determined by the control unit to the service control device.

  A communication terminal according to a second aspect of the present disclosure provides a service to a plurality of communication terminals via a core network with a control unit that determines a parameter related to paging with a control device, and the parameter related to paging And a communication unit that transmits to the application server.

  A service control device according to a third aspect of the present disclosure includes: a receiving unit that receives a parameter related to paging determined for each communication terminal in the control device from the control device; and a parameter related to paging to a plurality of communication terminals. And a transmission unit that transmits to an application server that provides the service.

  A data transmission method according to a fourth aspect of the present disclosure is a service that determines a parameter related to paging for each communication terminal and transmits the parameter related to the communication terminal to an application server that provides the service to a plurality of communication terminals. The determined parameter relating to paging of the communication terminal is transmitted to the control device.

  A program according to a fifth aspect of the present disclosure determines a parameter related to paging for each communication terminal, and transmits the parameter related to the communication terminal to an application server that provides a service to a plurality of communication terminals. The computer is caused to transmit the determined parameter relating to paging of the communication terminal.

  According to the present disclosure, a control device, a communication terminal, a service control device, a communication system, a data transmission method, and a program capable of shortening a time for buffering data and reducing a load in a core network device or a core network Can be provided.

1 is a configuration diagram of a communication system according to a first exemplary embodiment; FIG. 3 is a configuration diagram of a communication system according to a second exemplary embodiment. FIG. 10 is a diagram showing a parameter transmission process related to paging according to the second embodiment; It is a figure explaining CP (Communication Pattern) parameter concerning Embodiment 2. FIG. FIG. 10 is a diagram showing a parameter transmission process related to paging according to the third embodiment; It is a block diagram of UE (User Equipment) concerning Embodiment 4. FIG. FIG. 10 is a diagram showing a parameter transmission process related to paging according to the fourth embodiment; FIG. 10 is a configuration diagram of a communication system according to a fifth exemplary embodiment. FIG. 10 is a diagram showing a parameter transmission process related to paging according to the fifth embodiment; FIG. 10 is a diagram showing a parameter transmission process related to paging according to the fifth embodiment; It is a block diagram of UE concerning each embodiment. It is a block diagram of the control apparatus concerning each embodiment. It is a block diagram of the service control apparatus concerning each embodiment. It is a figure which shows an example of the information which SCEF (Service Capability Exposure Function) stores.

(Embodiment 1)
Hereinafter, embodiments will be described with reference to the drawings. A configuration example of the communication system according to the first exemplary embodiment will be described with reference to FIG. The communication system in FIG. 1 includes a control device 10, a service control device 20, an application server 30, a base station 40, and a communication terminal 50. The control device 10, the service control device 20, the application server 30, the base station 40, and the communication terminal 50 may be computer devices that operate when a processor executes a program stored in a memory. In addition, the control device 10 and the service control device 20 may be referred to as a core network device arranged in the core network.

  Next, a configuration example of the control device 10 will be described. The control device 10 includes a control unit 11 and a communication unit 12. The components constituting the control device 10 such as the control unit 11 and the communication unit 12 may be software or modules that execute processing when the processor executes a program stored in a memory. Or the component which comprises the control apparatus 10 may be hardware, such as a circuit or a chip | tip.

  The control unit 11 determines a paging parameter for each communication terminal 50. Parameters relating to paging are associated with the communication terminal 50. Parameters related to paging include, for example, eDRX parameters (eDRX parameters), PSM (Power Saving Mode) timers (PSM timers), extended idle mode DRX cycle length, extended idle mode DRX cycle value, And at least one of the eDRX timers. In the following description, the eDRX parameter and the PSM timer are representatively described. However, the remaining three are not excluded, and the paging parameter may include at least one of these five pieces of information.

  The eDRX parameter may be information indicating the timing at which the communication terminal 50 receives the Paging Channel transmitted from the base station 40, for example. In other words, the eDRX parameter may be information indicating an interval at which the communication terminal 50 receives the Paging Channel. The PSM timer may be information indicating the timing at which the communication terminal 50 makes a pseudo transition to the same state as power-off.

  The control part 11 may determine the parameter regarding the paging of the communication terminal 50 by negotiating between the communication terminals 50, for example.

  The communication unit 12 transmits the parameters related to paging of the communication terminal 50 determined by the control unit 11 to the service control apparatus 20. The service control apparatus 20 transmits parameters or information regarding the communication terminal 50 including at least parameters regarding paging of the communication terminal 50 to the application server 30. In addition, the service control device 20 transmits or transfers parameters or information regarding a plurality of communication terminals to the application server 30.

  The application server 30 is a server that provides services to a plurality of communication terminals. The service provided by the application server 30 may be, for example, an IoT service provided to the IoT terminal.

  As described above, the control device 10 in FIG. 1 can transmit parameters related to paging of the communication terminal 50 to the service control device 20. In addition, since the service control apparatus 20 transmits parameters or information regarding the communication terminal 50 including at least parameters regarding paging of the communication terminal 50 to the application server 30, the application server 30 receives parameters regarding paging of the communication terminal 50. be able to.

  The application server 30 can grasp the timing at which the communication terminal 50 receives the Paging Channel based on the parameters related to paging of the communication terminal 50. Therefore, for example, the application server 30 can transmit data to be transmitted to the communication terminal 50 to the core network in accordance with the timing at which the communication terminal 50 receives the Paging Channel. As a result, a core network device (not shown) arranged in the core network and buffering data destined for the communication terminal 50 can shorten the time for buffering data destined for the communication terminal 50. . Thereby, in the core network device, the load can be reduced by reducing the amount of data to be buffered or facilitating data management. It is also possible to avoid a shortage of memory capacity of the core network device or the core network. In other words, it is not necessary to add memory in the core network device or the core network.

  Further, the control device 10 itself may receive data from the application server 30 via the service control device 20 and transmit the received data to the communication terminal 50 via the base station 40. In such a case, the amount of data buffered by the control device 10 can be reduced, and a shortage of the memory capacity of the control device 10 can be avoided.

(Embodiment 2)
Next, a configuration example of the communication system according to the second embodiment will be described with reference to FIG. 2 includes a UE (User Equipment) 60, an eNB (evolved Node B) 70, an SGW (Serving Gateway) 80, a PGW (Packet Data Network Gateway) 90, an MME (Mobility Management Entity) 100, an SCEF (Service Capability). An Exposure Function (entity function) entity 110 (hereinafter referred to as SCEF 110), an HSS (Home Subscriber Server) 120, and an AS (Application Server) 130 are included.

  The SGW 80, PGW 90, MME 100, SCEF 110, and HSS 120 are core network devices constituting an EPC (Evolved Packet Core).

  UE 60 is a generic term for communication terminals in 3GPP, and corresponds to communication terminal 50 in FIG. The UE 60 may be an IoT terminal or an MTC terminal. The eNB 70 is a base station that supports LTE (Long Term Evolution) as a wireless communication scheme, and corresponds to the base station 40 of FIG. For example, the UE 60 performs radio communication with the eNB 70 using LTE.

  The SGW 80 is arranged between the eNB 70 and the PGW 90 and relays user data. The user data may be referred to as U (User) -Plane data. When receiving data destined for the UE 60, the SGW 80 temporarily buffers the received data. The SGW 80 transmits the buffered data to the UE 60 via the eNB 70 at a timing when the UE 60 receives the Paging channel and the UE 60 can receive the data. The PGW 90 is a gateway with an external network different from the core network, and communicates with the AS 130 arranged in the external network. The external network may be a network managed by a provider such as a PDN (Packet Data Network) or an application service provider. The PGW 90 is arranged between the AS 130 and the SGW 80 and relays user data.

  The MME 100 controls or manages the mobility of the UE 60 and corresponds to the control device 10 of FIG. Therefore, MME100 determines the parameter regarding paging for every UE60 similarly to the control apparatus 10 of FIG. Then, the MME 100 transmits the determined parameters relating to the paging of the UE 60 to the SCEF 110. The MME 100 may determine parameters related to paging of the UE 60 by negotiating with the UE 60. The MME 100 is connected to the eNB 70. The MME 100 relays control data between the core network device in the core network and the eNB 70. Alternatively, the MME 100 transmits the control data generated in the own device to the eNB 70 or the core network device in the core network. The control data may be referred to as C (Control) -Plane data. In addition, it is known that the data used for the IoT service transmitted between the UE 60 and the AS 130 has a smaller capacity than general user data. Therefore, data used for the IoT service may be transmitted as control data between the AS 130 and the UE 60 via the SCEF 110, the MME 100, and the eNB 70. Alternatively, data used for the IoT service is transmitted between the AS 130 and the UE 60 via the PGW 90, the SGW 80, the MME 100, and the eNB 70, and only the section between the MME 100 and the UE 60 may be transmitted as control data. Good. Data used for the IoT service may be referred to as small data, for example. When the MME 100 receives the small data destined for the UE 60, the MME 100 temporarily buffers the received small data. The MME 100 transmits the buffered data to the UE 60 when the UE 60 receives the Paging channel and can receive the data. When the SGW 80 receives small data, the received small data is temporarily buffered. The SGW 80 transmits the buffered data to the UE 60 at a timing when the UE 60 receives the Paging channel and can receive the data.

  The SCEF 110 executes authentication and the like related to the AS 130 arranged in the external network. Furthermore, SCEF110 transmits the parameter regarding UE60 to AS130. The SCEF 110 corresponds to the service control apparatus 20 in FIG. SCEF110 is arrange | positioned between MME100 and AS130.

  The HSS 120 manages subscriber information (UE Subscription Information, UE Usage Type, etc.) regarding the UE 60. The HSS 120 is connected to the MME 100 and the SCEF 110.

  The AS 130 receives parameters regarding the UE 60 from the SCEF 110. When the AS 130 receives a parameter related to paging of the UE 60 (for example, eDRX parameter, PSM timer, etc.) from the SCEF 110, the AS 130 transmits data destined for the UE 60 based on the parameter. The AS 130 may transmit data destined for the UE 60 in accordance with the timing at which the UE 60 receives the Paging channel. In other words, the AS 130 may adjust the data transmission timing so that the time for which the data to be transmitted is buffered in the core network device is shortened.

  Next, a flow of processing in which parameters related to paging transmitted from the MME 100 according to the second embodiment are transmitted to the AS 130 will be described with reference to FIG. First, in UE60, eNB70, and MME100, the location registration process regarding UE60 or a session control process is performed (S11). The location registration process may be executed, for example, in an Attach process related to the UE 60, a TAU (Tracking Area Update) process, or a HO (Handover) process. The session control process may be executed, for example, in a PDN connection process (PDN Connectivity procedure) related to the UE 60 or a PDP context activation process (PDP Context Activation Procedure). By performing the location registration process in step S11, the MME 100 can manage the location of the UE 60. The position of the UE 60 may be, for example, a TA (Tracking Area). Further, in the location registration process in step S11, the MME 100 may determine at least one of the eDRX parameter of the UE 60 and the PSM timer. Further, the MME 100 may receive or acquire at least one of the eDRX parameter of the UE 60 and the PSM timer transmitted from the UE 60, and may determine at least one of the eDRX parameter of the UE 60 and the PSM timer based on the information.

  Next, the MME 100 transmits a Notification message or a Request message (hereinafter, represented by a Notification message) to the SCEF 110 (S12). The Notification message transmitted in step S12 includes parameters related to paging of the UE 60. Parameters related to paging may include at least one of an eDRX parameter and a PSM timer. The eDRX parameter indicates a period in which the UE 60 receives the Paging Channel. Therefore, when setting the eDRX parameter in the Notification message, the MME 100 may also set information regarding the time when the UE 60 receives the Paging Channel in the Notification message. For example, the MME 100 may calculate the Hash value of S-TMSI (System Architecture Evolution Temporary Mobile Subscriber Identity) associated with the UE 60, and calculate the time when the UE 60 receives the Paging Channel. The Notification message may be a Create SCEF Connection Request message or an Update Serving Node Information Request message.

  Next, the SCEF 110 receives the Notification message transmitted from the MME 100, constructs or generates a Notification message for the AS 130 based on the received Notification message, and transmits it to the AS 130 (S13). After receiving the Notification message transmitted from the MME 100, the SCEF 110 may store information including at least one of the eDRX parameter and the PSM timer set in the Notification message in a memory or the like. Further, the AS 130 may store information including at least one of the eDRX parameter and the PSM timer set in the Notification message in a memory or the like after receiving the Notification message transmitted from the SCEF 110.

  Next, AS 130 transmits a Notification Ack (Acknowledge) message to SCEF 110 as a response to the Notification message transmitted in step S13 (S14). Next, the SCEF 110 transmits a Notification Ack message to the MME 100 as a response to the Notification message transmitted in step S12 (S15). The Notification Ack message (S15) transmitted from the SCEF 110 to the MME 100 may be a Create SCEF Connection Response message or an Update Serving Node Information Response message.

  Next, the AS 130 changes the value of the parameter set in the Notification message in step S13 according to the characteristics of the service provided to the UE 60 or the attribute of the UE 60 (S16). For example, when the eDRX parameter is set in the Notification message in step S13, the AS 130 may change the set eDRX parameter to a value with a longer period or a shorter period in accordance with the service characteristics. When the PSM timer is set in the Notification message, the set time of the PSM timer already set in the AS 130 may be changed based on the PSM timer. Thus, AS130 can adjust the timing which transmits the data destined for UE60 based on the changed parameter by changing the parameter about paging of UE60. In other words, the AS 130 can transmit data destined for the UE 60 to the core network in accordance with the timing when the UE 60 is paged based on the changed parameter, and the core network device (eg, SGW 80, MME 100, etc.) ) Eliminates the need to buffer the data for a long time. Therefore, in the core network device, it is possible to reduce the load such as reducing the data capacity to be buffered or facilitating data management. In addition, it is possible to prevent the memory capacity of the core network device from becoming insufficient, or to avoid adding memory in the core network device.

  Next, the AS 130 transmits an Update request message in which the parameter whose value has been changed is set to the SCEF 110 (S17). The parameter whose value has been changed may be set, for example, as a CP (Communication Pattern) parameter included in the Update request message. Here, an example of CP parameters set in the Update request message will be described with reference to FIG.

  Periodic communication indicator, Communication duration time, Periodic time, Scheduled communication time, and Stationary indication are set as CP parameters set in the Update request parameter. Further, when the eDRX parameter or the PSM timer is changed in step S16, the AS 130 adds the changed eDRX parameter or the PSM timer as a CP parameter to the Update request message as shown in FIG. In addition, the AS 130 may set only the changed parameters in the Update request message among the Periodic communication indicator, Communication duration time, Periodic time, Scheduled communication time, Stationary indication, eDRX parameter, and PSM timer.

  Returning to FIG. 3, the SCEF 110 that has received the Update request message in Step S <b> 17 may determine whether the AS 130 is permitted to transmit the Update request message. The SCEF 110 selects a CP parameter to be changed based on an operator policy or the like (Select CP parameter) (S18). Changing the CP parameter includes adding, modifying, deleting, or the like of the CP parameter.

  Next, the SCEF 110 includes the CP parameter selected as the CP parameter applied to the UE 60 in the Update CP Parameter Request message and transmits it to the HSS 120 (S19). The CP parameter may be referred to as a CP parameter set.

  Next, HSS120 updates the subscriber information (UE Subscription Information, UE Usage Type, etc.) regarding UE60 based on the Update CP Parameter Request message received in step S19 (S20). Specifically, if the CP parameter received in step S19 has been changed from the CP parameter related to UE 60 that has already been stored, HSS 120 discards the CP parameter that has already been stored, and the new parameter received in step S19. CP parameters are stored. The HSS 120 may overwrite and update the already stored CP parameter with a new CP parameter. The HSS 120 stores the CP parameter as subscriber information.

  Next, the HSS 120 transmits an Update CP parameter Response message to the SCEF 110 (S21). Next, the SCEF 110 transmits an Update Response message to the AS 130 (S22).

  Next, the HSS 120 transmits (sends) or provides (provides) the CP parameters relating to the newly stored UE 60 to the MME 100 (S23). When the CP parameter received in step S23 is changed from the already stored CP parameter related to UE 60, MME 100 discards the already stored CP parameter and stores the new CP parameter received in step S23. To do. The MME 100 may overwrite or update the already stored CP parameter with a new CP parameter.

  Next, the MME 100 transmits the newly stored CP parameter to the UE 60 and the eNB 70 (S24). For example, the MME 100 may transmit the CP parameter to the eNB 70 using S1AP (S1 Application Protocol), and may transmit the CP parameter to the UE 60 using the NAS (Non-access stratum) protocol.

  Further, although it has been described that eDRX parameters and the like are transmitted using the Notification message in step S12, an NIDD submit Request message may be used instead of the Notification message. Further, although it has been described that eDRX parameters and the like are transmitted using the Notification message in step S13, a NIDD (Non-IP Data Delivery) Request message may be used instead of the Notification message. The NIDD submit Request message and NIDD submit Request message are defined in Chapter 5.13 of 3GPP TS23.682 V15.1.0 (2017-06).

  As described above, by executing the process shown in FIG. 3, the parameters related to paging of the UE 60 stored in the MME 100 are transmitted to the AS 130 via the SCEF 110. As a parameter related to paging, at least one of an eDRX parameter and a PSM timer may be included. Thereby, AS130 can transmit the data destined for UE60 to SCEF110 or PGW90, for example according to the timing which UE60 receives Paging Channel.

  Thereby, when the data transmitted from AS130 is transmitted to UE60 as control data, the time which MME100 buffers the data transmitted to UE60 can be shortened. In addition, when the data transmitted from the AS 130 is transmitted to the UE 60 as user data, the time for the SGW 80 to buffer the data to be transmitted to the UE 60 can be shortened. Specifically, the buffering time is shortened when the data in the MME 100 or the SGW 80 is compared with the case where the data destined for the UE 60 is transmitted without considering the timing at which the UE 60 receives the Paging Channel. This means that the buffered time is reduced. Thereby, in the MME 100 or the SGW 80, it is possible to reduce the load such as reducing the amount of data to be buffered or facilitating data management. Further, it is possible to prevent the memory capacity of the MME 100 or the SGW 80 from being insufficient. In other words, it is not necessary to add memory in the MME 100 or the SGW 80.

  Furthermore, compared to the case where the AS 130 transmits data destined for the UE 60 without considering the timing at which the UE 60 receives the Paging Channel, the time until the UE 60 receives the data after the AS 130 transmits the data. Can be shortened.

  In addition, when the CP parameter including at least one of the eDRX parameter and the PSM timer is changed in the AS 130 by executing the process shown in FIG. 3, the UE 60, the eNB 70, and the MME 100 are changed. CP parameters are notified. Accordingly, the AS parameter can be changed according to the characteristics of the service provided to the UE 60 or the attributes of the UE 60, and the CP parameters including the eDRX parameter and the PSM timer. As a result, it becomes possible to adjust the delay time generated in the transmission of user data, and the convenience of the service provided to the UE 60 can be improved.

  In the above description, the configuration using LTE as a wireless communication system and using EPC as a core network has been described. However, the processing in FIG. 3 is executed in a communication system called 3G in 3GPP. May be. Specifically, in a communication system called 3G, NB (Node B) and RNC (Radio Network Controller) are used instead of eNB, and SGSN (Serving General Packet Radio Service Support Node) is used instead of MME. HLR (Home Location Register) is used instead of HSS. Similarly, in the following description, a 3G communication system may be used.

(Embodiment 3)
Next, a flow of processing in which parameters related to paging transmitted from the MME 100 according to the third embodiment are transmitted to the AS 130 will be described with reference to FIG.

  Steps S31 to S33 in FIG. 5 are the same as steps S11 to S13 in FIG. In FIG. 5, after receiving the Notification message in step S33, processing similar to that in step S16 in FIG. 3 is executed (S34). That is, the AS 130 changes the value of the parameter set in the Notification message before transmitting the Notification Ack message to the SCEF 110. The Notification message (S33) may be a Create SCEF Connection Request message or an Update Serving Node Information Request message.

  Next, the AS 130 transmits a Notification Ack message in which the parameter whose value has been changed is set to the SCEF 110 (S35). The parameter whose value has been changed may be, for example, at least one of the eDRX parameter of the UE 60 and the PSM timer. Alternatively, the parameter whose value has been changed may be the CP parameter described in FIG.

  Next, the SCEF 110 transmits a Notification Ack message in which the parameter whose value has been changed is set to the MME 100 (S36). The Notification Ack message (S36) may be a Create SCEF Connection Response message or an Update Serving Node Information Response message.

  When the parameter received in step S36 is changed from the eDRX parameter or PSM timer of the UE 60 that has been stored, the MME 100 discards the already stored eDRX parameter or PSM timer, and receives the new parameter received in step S36. Store various parameters.

  Next, the MME 100 transmits the newly stored parameters to the UE 60 and the eNB 70 (S37). For example, the MME 100 transmits parameters to the eNB 70 using S1AP (S1 Application Protocol), and transmits parameters to the UE 60 using NAS (Non-access stratum) protocol.

  As described above, by executing the processing shown in FIG. 5, the AS 130 and the SCEF 110 can set at least one of the changed eDRX parameter and the PSM timer in Notification Ack. Therefore, the process shown in FIG. 5 can reduce the number of messages used for transmitting at least one of the changed eDRX parameter and the PSM timer, as compared with the process of FIG.

(Embodiment 4)
Then, the structural example of UE60 concerning Embodiment 4 is demonstrated using FIG. The UE 60 illustrated in FIG. 6 includes a control unit 61 and a communication unit 62. The components constituting the UE 60, such as the control unit 61 and the communication unit 62, may be software or modules that are processed by a processor executing a program stored in a memory. Or the component which comprises UE60 may be hardware, such as a circuit or a chip | tip.

  The control unit 61 determines parameters relating to paging with the MME 100. The parameters related to paging may include at least one of an eDRX parameter and a PSM timer associated with the UE 60. The control part 61 may determine the parameter regarding the paging of UE60 by negotiating between MME100.

  The communication unit 62 transmits the parameters related to the paging of the UE 60 determined by the control unit 61 to the AS 130. For example, the communication unit 62 may transmit parameters relating to paging of the UE 60 to the AS 130 as application data via the eNB 70 and the bearer set in the core network. In other words, the communication unit 62 may transmit parameters related to paging of the UE 60 to the AS 130 using the application layer or the application layer. Alternatively, the communication unit 62 may perform wireless LAN (Local Area Network) communication without passing through the eNB 70 and transmit parameters relating to paging as application data to the AS 130 via the Internet.

  Next, a flow of processing in which parameters related to paging transmitted from the UE 60 according to the fourth embodiment are transmitted to the AS 130 will be described with reference to FIG.

  Since step S41 is the same as step S11 of FIG. 3, detailed description thereof is omitted. Next, the UE 60 transmits a Notification message to the AS 130 (S42). The Notification message transmitted in step S42 includes at least one of the eDRX parameter and the PSM timer determined with the MME 100. Moreover, UE60 transmits Notification message to AS130 as application data.

  Next, the AS 130 transmits a Notification Ack message to the UE 60 as a response to the Notification message transmitted in step S42 (S43). Steps S44 to S52 are the same as steps S16 to S24 in FIG. Note that the Update request message in Step S45 and the Update CP Parameter Request message in Step S47 include parameters related to the paging of the UE 60. The parameters may include PSM timers, eDRX parameters, etc. The Update request message may be a T8 Set Suggested Network Configuration Request message, and the Update CP Parameter Request message may be a Set Suggested Network Configuration Request message. Further, the Update CP parameter Response message in step S49 may be a Set Suggested Network Configuration Response message, and the Update Response message in step S50 may be a T8 Set Suggested Network Configuration Response message.

  As described above, by executing the processing shown in FIG. 7, the UE 60 can transmit at least one of the eDRX parameter and the PSM timer to the AS 130 as application data. Here, the UE 60 can also transmit application data to the AS 130 via the so-called Internet not via the eNB 70 and the core network. As a result, data transmitted in the core network can be reduced. In the future, when the number of UEs 60 as IoT terminals increases, congestion in the core network can be avoided by reducing the amount of data transmitted in the core network.

  Further, when at least one of the eDRX parameter and the PSM timer is transmitted as application data to the AS 130 via the core network, the device in the core network transfers the data without performing application layer processing. As a result, the processing load on the devices in the core network can be reduced as compared with the case where at least one of the eDRX parameter and the PSM timer is transmitted in the core network as control data different from the application data.

(Embodiment 5)
Next, a configuration example of a communication system according to the fifth embodiment will be described with reference to FIG. The communication system of FIG. 8 refers to 3GPP TS23.501 V0.5.0 (2017-05) Figure 4.2.3_1, and mainly shows a 5GC (5G Core) configuration. 8 includes a UE 200, an AN (Access Network) 210, a UPF (User Plane Function) entity 220 (hereinafter referred to as UPF 220), an AUSF (Authentication Server Function) 230, and an AMF (Access and Mobility Management Function) entity 240. (Hereinafter referred to as AMF 240), SMF (Session Management Function) entity 250 (hereinafter referred to as SMF 250), NEF (Network Exposure Function) entity 260 (hereinafter referred to as NEF 260), NRF (Network Repository Function or Network Functions Repository Function) ) Entity 270 (hereinafter referred to as NRF 270), PCF (Policy Control Function) entity 280 (hereinafter referred to as PCF 280), UDM (Unified Data Management) 290, AF (Application Function) entity 300 (hereinafter referred to as “FPC”). And AF300), and has a DN (Data Network) 310. AN 210 may be denoted as (R (Radio)) AN 210.

  The UE 200 corresponds to the UE 60 in FIG. AN 210 includes a base station or the like that communicates with UE 200. The AN 210 may perform wireless communication with the UE 200 or may perform wired communication. A base station or the like included in the AN 210 corresponds to the eNB 70 in FIG.

  The UPF 220 is disposed between the AN 210 and the DN 310 that is an external network. The UPF 220 performs routing or transfer of user data between the AN 210 and the DN 310. The UPF 220 corresponds to the SGW 80 and the PGW 90 in FIG.

  The AMF 240 performs mobility management related to the UE 200 and authentication processing in cooperation with the AUSF 230 and the like. The SMF 250 manages a session established when transmitting user data between the UE 200 and the DN 310. The AMF 240 and the SMF 250 correspond to the MME 100 in FIG.

  The PCF 280 manages policy rules applied in the communication system shown in FIG. The UDM 290 manages subscriber data (UE Subscription or Subscription information). The UDM 290 corresponds to the HSS 120 in FIG.

  The AF 300 provides an application service to the UE 200. The AUSF 230 performs authentication related to the UE 200 in cooperation with the AMF 240 and the UDM 290.

  The NEF 260 executes an authentication process related to the AF 300 disposed in the external network. Further, the NEF 260 transmits parameters regarding the UE 200 to the AF 300. The NEF 260 corresponds to the SCEF 110 in FIG. The NRF 270 manages information related to services that can be provided to the UE 200, for example. The DN 310 is an external network different from the core network.

  Further, N1 is defined as a reference point between the UE 200 and the AMF 240. N2 is defined as a reference point between the AN 210 and the AMF 240. N3 is defined as a reference point between the AN 210 and the UPF 220. N4 is defined as a reference point between the UPF 220 and the SMF 250. N6 is defined as a reference point between the UPF 220 and the DN 310.

  Further, AUSF 230, AMF 240, SMF 250, NEF 260, NRF 270, PCF 280, UDM 290, and AF 300 each define a service-based interface. The Service-based interface indicates, for example, a service or function provided in each device.

  The Service-based interface defined in AUSF 230 is expressed as Nausf. The Service-based interface defined in the AMF 240 is expressed as Namf. A Service-based interface defined in the SMF 250 is expressed as Nsmf. The Service-based interface defined in the NEF 260 is expressed as Nnef. The Service-based interface defined in NRF 270 is expressed as Nnrf. A Service-based interface defined in the PCF 280 is expressed as Npcf. The Service-based interface defined in the UDM 290 is expressed as Nudm. A Service-based interface defined in AF 300 is expressed as Naf.

  FIG. 9 shows a flow of processing in which parameters related to paging transmitted from the UE 200 according to the fifth embodiment are transmitted to the AF 300. FIG. 9 shows that the processing of FIG. 3 is executed in the communication system shown in FIG. That is, FIG. 9 shows that each process of FIG. 3 is executed using 5GC of FIG. Steps S61 to S74 in FIG. 9 are the same as steps S11 to S24 in FIG. The location registration / session control process S61 is executed between the UE 200 and the AMF 240 in the case of the location registration process, and is executed between the UE 200 and the SMF 250 in the case of the session control process. Therefore, the Notification message (step S62) is transmitted from the AMF 240 when it is caused by the location registration process and from the SMF 250 when it is caused by the session control process.

  9 shows that the same signal as in FIG. 3 is used, the name of the signal may be changed. Further, a signal transmitted between the AMF 240 and the NEF 260 may be transmitted via the PCF 280. For example, the Notification message in step S62 and the Notification Ack message in step S65 may be transmitted via the PCF 280. Further, the Notification Ack message (step S65) is transmitted to the transmission source that transmitted the Notification message (step S62). That is, it is transmitted to AMF 240 or SMF 250.

  FIG. 10 shows an example different from FIG. 9 regarding the flow of processing in which parameters related to paging transmitted from the UE 200 are transmitted to the AF 300. FIG. 10 shows that the process of FIG. 7 is executed in the communication system shown in FIG. That is, FIG. 10 shows that each process of FIG. 7 is executed using 5GC of FIG. Steps S81 to S92 in FIG. 10 are the same as steps S41 to S52 in FIG.

  Subsequently, configuration examples of the control device 10, the UE 60, the UE 200, and the service control device 20 described in the above-described plurality of embodiments will be described with reference to FIGS.

  FIG. 11 is a block diagram illustrating a configuration example of the UE 60 and the UE 200. The radio frequency (RF) transceiver 1101 performs analog RF signal processing in order to communicate with the eNB or gNB. Analog RF signal processing performed by the RF transceiver 1101 includes frequency up-conversion, frequency down-conversion, and amplification. RF transceiver 1101 is coupled with antenna 1102 and baseband processor 1103. That is, the RF transceiver 1101 receives modulation symbol data (or OFDM (Orthogonal Frequency Division Multiplexing) symbol data) from the baseband processor 1103, generates a transmission RF signal, and supplies the transmission RF signal to the antenna 1102. Further, the RF transceiver 1101 generates a baseband received signal based on the received RF signal received by the antenna 1102 and supplies this to the baseband processor 1103.

  The baseband processor 1103 performs digital baseband signal processing (data plane processing) and control plane processing for wireless communication. Digital baseband signal processing includes (a) data compression / decompression, (b) data segmentation / concatenation, (c) transmission format (transmission frame) generation / decomposition, and (d) transmission path encoding / decoding. , (E) modulation (symbol mapping) / demodulation, and (f) generation of OFDM symbol data (baseband OFDM signal) by Inverse Fast Fourier Transform (IFFT). On the other hand, control plane processing includes layer 1 (eg, transmission power control), layer 2 (eg, radio resource management, and hybrid automatic repeat request (HARQ) processing), and layer 3 (eg, attach, mobility, and call management). Communication management).

  For example, in LTE and LTE-Advanced, digital baseband signal processing by the baseband processor 1103 includes packet data convergence protocol (PDCP) layer, Radio Link Control (RLC) layer, MAC layer, and PHY layer signal processing. But you can. The control plane processing by the baseband processor 1103 may include non-access stratum (NAS) protocol, RRC protocol, and MAC CE processing.

  The baseband processor 1103 includes a modem processor (eg, Digital Signal Processor (DSP)) that performs digital baseband signal processing and a protocol stack processor (eg, Central Processing Unit (CPU)) that performs control plane processing, or a micro processing unit. (MPU)). In this case, a protocol stack processor that performs control plane processing may be shared with an application processor 1104 described later.

  The application processor 1104 is also called a CPU, MPU, microprocessor, or processor core. The application processor 1104 may include a plurality of processors (a plurality of processor cores). The application processor 1104 is a system software program (Operating System (OS)) read from the memory 1106 or a memory (not shown) and various application programs (for example, a call application, a web browser, a mailer, a camera operation application, music playback) Various functions of the UE 60 are realized by executing the application.

  In some implementations, the baseband processor 1103 and the application processor 1104 may be integrated on one chip, as indicated by the dashed line (1105) in FIG. In other words, the baseband processor 1103 and the application processor 1104 may be implemented as one System on Chip (SoC) device 1105. The SoC device is sometimes called a system large scale integration (LSI) or chipset.

  The memory 1106 is a volatile memory, a nonvolatile memory, or a combination thereof. The memory 1106 may include a plurality of physically independent memory devices. The volatile memory is, for example, Static Random Access Memory (SRAM), Dynamic RAM (DRAM), or a combination thereof. The non-volatile memory is a mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or hard disk drive, or any combination thereof. For example, the memory 1106 may include an external memory device accessible from the baseband processor 1103, the application processor 1104, and the SoC 1105. Memory 1106 may include an embedded memory device integrated within baseband processor 1103, application processor 1104, or SoC 1105. Further, the memory 1106 may include a memory in a universal integrated circuit card (UICC).

  The memory 1106 may store a software module (computer program) including an instruction group and data for performing processing by the UE 60 and the UE 200 described in the above embodiments. In some implementations, the baseband processor 1103 or the application processor 1104 may be configured to read and execute the software module from the memory 1106 to perform the processes of the UE 60 and the UE 200 described in the above embodiments. Good.

  FIG. 12 is a block diagram illustrating a configuration example of the control device 10. Referring to FIG. 12, the control device 10 includes a network interface 1201, a processor 1202, and a memory 1203. The network interface 1201 is used to communicate with other network devices constituting the communication system. The network interface 1201 may include, for example, a network interface card (NIC) compliant with IEEE 802.3 series.

  The processor 1202 reads the software (computer program) from the memory 1203 and executes it, thereby performing the processing of the control device 10 described using the sequence diagram and the flowchart in the above-described embodiment. The processor 1202 may be, for example, a microprocessor, an MPU (Micro Processing Unit), or a CPU (Central Processing Unit). The processor 1202 may include a plurality of processors.

  The memory 1203 is configured by a combination of a volatile memory and a nonvolatile memory. Memory 1203 may include storage located remotely from processor 1202. In this case, the processor 1202 may access the memory 1203 via an I / O interface not shown.

  In the example of FIG. 12, the memory 1203 is used for storing software modules. The processor 1202 can perform the processing of the control device 10 described in the above-described embodiment by reading these software module groups from the memory 1203 and executing them.

  As described with reference to FIG. 12, each of the processors included in the control device 10 executes one or more programs including a group of instructions for causing a computer to execute the algorithm described with reference to the drawings.

  FIG. 13 is a block diagram illustrating a configuration example of the service control apparatus 20. The service control apparatus 20 includes a network interface 1301, a processor 1302, and a memory 1303. The network interface 1301, the processor 1302, and the memory 1303 have the same functions as the network interface 1201, the processor 1202, and the memory 1203 in the control apparatus 10 of FIG. As an example of the service control device 20, FIG. 14 shows an example of information stored in the memory or the like by the SCEF. As shown in FIG. 14, when the SCEF 110 receives at least one of the eDRX parameter and the PDM timer from the MME 100, it may add them to information (EPS Bearer context information) and store them in a memory or the like.

  In the above example, the program can be stored and supplied to a computer using various types of non-transitory computer readable media. 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)) are included. The program may also be supplied to the computer by various types of transitory 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.

  Note that the present disclosure is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present disclosure. In addition, the present disclosure may be implemented by appropriately combining the respective embodiments.

DESCRIPTION OF SYMBOLS 10 Control apparatus 11 Control part 12 Communication part 20 Service control apparatus 30 Application server 40 Base station 50 Communication terminal 60 UE
61 control unit 62 communication unit 70 eNB
80 SGW
90 PGW
100 MME
110 SCEF
120 HSS
130 AS
200 UE
210 AN
220 UPF
230 AUSF
240 AMF
250 SMF
260 NEF
270 NRF
280 PCF
290 UDM
300 AF
310 DN

Claims (18)

A control unit that determines parameters related to paging for each communication terminal;
A communication unit that transmits parameters related to paging of the communication terminal determined by the control unit to a service control device that transmits parameters related to the communication terminal to an application server that provides services to a plurality of communication terminals; A control device comprising:   The control device according to claim 1, wherein the parameters relating to paging include at least one of an extended discontinuous reception (eDRX) parameter and a power saving mode (PSM) timers. The communication unit is
The control device according to claim 1, wherein the parameter related to the paging changed in the application server is received via the service control device. The communication unit is
The control apparatus according to claim 3, wherein the parameter related to the paging after the change is transmitted to the communication terminal and a base station that communicates with the communication terminal. The controller is
The control device according to claim 3 or 4, wherein a parameter related to paging of the communication terminal determined at the time of location registration processing is updated to a parameter related to the changed paging. The communication unit is
The control device according to claim 1, wherein the control unit transmits a parameter related to paging of the communication terminal determined at the time of location registration processing to the service control device. A control unit that determines parameters related to paging with the control device;
A communication terminal comprising: a communication unit that transmits a parameter related to paging to an application server that provides services to a plurality of communication terminals via a core network.   The communication terminal according to claim 7, wherein the parameter relating to paging is at least one of an eDRX parameter and a PSM timers. The communication unit is
The communication terminal according to claim 7 or 8, wherein the parameter related to the paging changed in the application server is received via a service control device. The controller is
The communication terminal according to claim 9, wherein the paging parameter determined during the location registration process is updated to the changed paging parameter. The communication unit is
The communication terminal according to any one of claims 7 to 10, wherein a parameter related to the paging determined at the time of location registration processing in the control unit is transmitted to the application server. A receiving unit for receiving, from the control device, parameters related to paging determined for each communication terminal in the control device;
A service control apparatus comprising: a transmission unit that transmits a parameter relating to paging to an application server that provides a service to a plurality of communication terminals. A communication terminal;
A control device;
A service control device,
The control device includes:
A control unit for determining parameters relating to paging of the communication terminal;
A transmission unit that transmits the paging parameters to the service control device,
The service control device includes:
A receiving unit for receiving a parameter relating to the paging from the control device;
A communication system comprising: a transmission unit that transmits a parameter related to the paging to an application server that provides a service to the communication terminal. Determine the paging parameters for each communication terminal,
A data transmission method in a control device, wherein the determined parameter related to paging of the communication terminal is transmitted to a service control device that transmits the parameter related to the communication terminal to an application server that provides services to a plurality of communication terminals. Determine paging parameters with the control unit,
A data transmission method in a communication terminal, wherein the parameter relating to paging is transmitted to an application server that provides services to a plurality of communication terminals via a core network. Receiving parameters relating to paging determined for each communication terminal in the control device from the control device;
A data transmission method in a service control apparatus, wherein the paging parameters are transmitted to an application server that provides a service to a plurality of communication terminals. Determine the paging parameters for each communication terminal,
A program that causes a computer to execute transmission of a determined parameter relating to paging of the communication terminal to a service control apparatus that transmits the parameter relating to the communication terminal to an application server that provides services to a plurality of communication terminals. Determine paging parameters with the control unit,
A program that causes a computer to execute transmission of parameters relating to paging to an application server that provides services to a plurality of communication terminals via a core network.

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