KR101591682B1 - A method for access control in a Machine Type Communication and an apparatus thereof - Google Patents

Abstract

The present invention relates to a method and an apparatus for controlling access in a machine type communication, and a method for controlling access in a machine type communication, the method comprising the steps of: receiving a service request from a device by transmitting paging notifying a device that an SMS transmission is scheduled; Determining whether to allow communication according to one of a time-limited MO originating communication or a period-ending MO communication according to a parameter of the stored subscription information; and if the communication is permitted, A method of controlling a connection of a network in a machine type communication, a method of controlling a network connection of a device corresponding thereto, and an apparatus therefor are provided.

MTC, MME, HSS, NIMO,

Description

Technical Field [0001] The present invention relates to a method and apparatus for access control in a machine type communication,

The present invention relates to a method and apparatus for access control in a machine type communication, and more particularly, to a method and apparatus for controlling access in a machine type communication capable of performing a term-based MO communication at a time when mobile originating communication is not granted To a connection control method and apparatus.

MTC (Machine Type Communication) refers to the communication between machines. The MTC-supporting mobile communication system does not require mobility or voice communication, or receives data to idle terminals. And does not use a mobile terminating call for supporting the communication between the person and the person. Examples of the terminal that performs the MTC include a vending machine installed in a fixed position, a home appliance located in the home, or a surveillance camera installed in a predetermined place for security.

When the applications of the terminals using the MTC use only the pull model which always connects to the server first, only MO (mobile originating) communication is mainly used. When the time control mobile originating (TCMO) communication that permits the MO communication is applied only to the time when the amount of network traffic is small (late night time or early morning) with respect to the MO communication, the load of the network is efficiently dispersed, Making it possible to efficiently use resources.

The problem with TCMO communication is that it is necessary to send or receive information to MTC devices at an unspecified time, but can not do so. That is, when the server requests the communication device to connect to the server for the time permitted by the time control, that is, the late night time or the early morning, but for checking the status of the MTC device, ) If the reason for starting the communication is at the request of the server, it should be able to communicate even when it is not allowed.

If the server does not apply the time constraint when the server requests the communication when applying the TCMO communication and the MTC device does not intentionally keep the connection state of the communication allowed by the request of the server, There is a problem that it may not be applied.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional needs, and it is an object of the present invention to provide a connection control method and apparatus in a machine type communication using machine type communication outside a predetermined time, .

According to another aspect of the present invention, there is provided a method of controlling access to a network in a machine type communication, the method comprising: receiving a service request from a device by sending a paging message informing a device of an SMS transmission schedule; Determining whether to permit communication according to one of a time-limited MO originating communication or a period-ending MO communication according to a parameter of the device's stored subscription information; And establishing a connection between the device and the network.

Determining whether an expiration time of the connection of the network has arrived according to a parameter of the subscription information if the communication method is a periodical-ary MO communication after establishing the connection; And then releasing the network connection.

Wherein the step of determining whether or not the communication is granted includes the steps of: confirming whether the parameter of the subscription information is set to perform the period-based MO communication if the time-limited MO communication is not granted; And if the SMS is established by the Originator granting the device's duration-based MO communication, the duration-based MO communication is allowed.

According to another aspect of the present invention, there is provided a method of controlling access to a device in a machine type communication, the method comprising: receiving paging notifying of transmission of an SMS transmission; When the network permits communication according to any one of a time-limited MO communication or a period-based MO communication according to a parameter of subscription information of a device stored in the network, And using the network.

Wherein the network is used until the expiration time of the connection of the network according to the parameter of the subscription information if the communication method is a periodical-terminated MO communication.

In order to accomplish the above object, a network connection control apparatus in a machine type communication according to a preferred embodiment of the present invention is characterized by describing a condition for granting a time-limited mobile originating communication and a term- A mobile switching center for transmitting a paging message informing the device that an SMS transmission is scheduled; and a home subscriber server for receiving a service request from the device according to the paging, MO communication, and a mobility management entity for establishing a connection between the device and the network when the communication is granted as a result of the determination.

Wherein the mobility management entity determines whether an expiration time of the connection of the network has arrived according to the parameter of the subscription information if the communication method is a periodical posted MO communication and releases the network connection when the expiration time comes .

Wherein the mobility management entity is configured to determine whether the parameter of the subscription information is set to perform duration-augmented MO communication if the time-limited MO communication is not granted, and if the duration- In the case of the originator who gives the established MO communication, the above-mentioned periodical MO communication is granted.

According to another aspect of the present invention, there is provided a method of controlling access to a device in a machine type communication, the method including: a wireless communication unit for receiving paging notifying of an SMS transmission schedule; When the network transmits a message according to one of a time-limited MO communication or a period-based MO communication in accordance with the parameter of the subscription information of the pre-stored device, And a control unit for controlling the wireless communication unit to use the wireless communication unit.

The control unit controls the wireless communication unit to use the network until the expiration time of the connection of the network according to the parameter of the subscription information if the communication method is a periodical-based MO communication.

According to the present invention, when performing period-end-of-period MO communication at a time when time-limited MO communication can not be performed, when a period-based MO communication is performed, MTC can be performed even when communication is not available. Accordingly, the network can control the usage time of the network for the MTC. The present invention is advantageous in that MTC can be performed at any time if necessary, and radio resources of the network can be saved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of well-known functions and constructions that may obscure the gist of the present invention will be omitted.

1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 1, a wireless communication system according to an embodiment of the present invention includes a MTC (Machine Type Communication) device 100 and a network 200.

The network 200 includes an evolved NodeB 210, a Mobility Management Entity (MME) 220, a Home Subscriber Server (MSS) 220, (HSS) 230, a mobile switching center (MSC) 240, and an SMS center (hereinafter referred to as 'SC') 250.

The MTC device 100 is a non-portable device, and is abbreviated as "device" hereinafter. The device 100 transmits its subscription information when it attaches to the network.

The eNB 210 is a base station that connects a wireless section between the device 100 and the network 200, and transmits and receives paging and messages according to an embodiment of the present invention.

The MME 220 determines whether to transmit the paging to the device 100 by referring to the subscription information of the device 100 before the MME 220 transmits the paging for the MO communication to the device 100. [ That is, if the content of the parameter of the subscription information permits the MO communication, the MME 220 allows the paging to be transmitted. Otherwise, the MME 220 terminates the communication without transmitting the paging.

In addition, the MME 220 establishes a network connection to the device 100 in accordance with the request of the device 100 in accordance with the time-limited communication or the period-based communication method. The time-limited MO communication method is a method in which a period during which MO communication can be performed is set in advance, and the network is allowed to use the MO communication only during that period. The period-based MO communication method is a method in which a predetermined time is calculated from a specific point in time and the network is allowed to be used until the set time expires.

In addition, the MME 220 determines the maintenance time of the connected network, and releases the network connection when the time has expired. At this time, the MME 220 establishes or cancels the network connection according to the permalites stored in the HSS 230 in advance.

The HSS 230 stores information on subscribers subscribed to the communication network in the form of subscription information. In particular, the HSS 230 stores parameters according to the time-limited MO communication method and the period-based MO communication method.

The SC 250 stores the SMS received from a particular originator. The Originator can be any kind of device with SMS transmission capability. The originator sends the SMS to the network 200 with its identifier (e.g., IMSI) and the identifier of the destination device. The SC 250 then receives and stores the SMS and transmits the SMS to the MSC 240 in order to transmit the stored SMS to the destination device.

When receiving the SMS, the MSC 240 temporarily stores the received SMS. The MSC 240 then pages through the eNB 210 to inform the destination device of the SMS transmission.

2 is a diagram for explaining a schematic structure of a device according to an embodiment of the present invention.

Referring to FIG. 2, a device according to an exemplary embodiment of the present invention may include a vending machine installed in a fixed position, various devices located in a home, or a surveillance camera installed in a predetermined place for security.

A device 100 according to an embodiment of the present invention includes a wireless communication unit 110 and a control unit 120. [

The wireless communication unit 110 connects the wireless section between the device and the network and transmits and receives data in the wireless section. That is, the wireless communication unit 110 may transmit the service request message or the like input from the control unit 120 to the eNB 210. [ Also, the wireless communication unit 110 receives paging, SMS, and the like from the eNB 210 and transmits the paging, SMS, and the like to the control unit 120.

Upon receiving the paging from the wireless communication unit 110, the control unit 120 generates a service request message requesting network use according to the paging, and transmits the generated service request message to the network 200 through the wireless communication unit 110. In addition, when the network is allowed to be used, the control unit 120 can receive the SMS through the wireless communication unit 110. [ Upon receiving the SMS, the controller 120 generates a transmission report indicating that the SMS has been received, and transmits the transmission report to the network 200 through the wireless communication unit 110.

The control unit 120 can use the network according to the contents of the SMS. For example, when the device 100 is a printer, if the content of the SMS is to download and update the firmware of the device, the SMS may specify the address of the server storing the firmware, the directory address where the firmware is stored in the server can do.

Accordingly, the control unit 120 accesses the network 200 through the wireless communication unit 110. [ Then, the control unit 120 may access the server having the corresponding address according to the contents of the SMS in the network 200, and then receive the firmware from the directory. Then, the control unit 120 can install the received firmware in the device.

On the other hand, the use time of the network 200 of the device 100 is limited according to the communication method granted by the network 200. [ Accordingly, the control unit 120 may use the network according to the contents of the received SMS, but may use the network for a limited time according to the communication method.

In the case of the time-limited MO communication, the control unit 120 can use the network 200 for a predetermined period through the wireless communication unit 110. [ On the other hand, in the case of MO communication, the control unit 120 calculates a predetermined time from when the network 200 receives the delivery report for the SMS through the wireless communication unit 110, You can use the network until it expires.

On the other hand, although not shown, the device 100 according to an embodiment of the present invention may further include peripheral devices according to the purpose of the present example of the device. For example, when the device 100 is a printer, it may further include a peripheral device for the printer main function. In this case, the control unit 120 may further have a control function for performing the printer main function.

In order to perform connection control of the machine type communication according to the embodiment of the present invention, the following setting is required. That is, the subscription information of the device 100 is as shown in Table 1, and the subscription information is transmitted to the MME 220 when the device 100 performs the attachment to the network 200 And the HSS 230 receives it from the MME 220 and stores and manages the received subscription information.

MO_TC = [time1],
NIMO = True / false,
Allowed NIMO Originator = [A, B, C],
Max_NIMO_time = T sec

As shown in Table 1, the subscription information includes MO_TC, NIMO, Allowed NIMO Originator, and Max_NIMO_time as its parameters.

Here, MO_TC is a parameter for time-limited MO communication, and NIMO, Allowed NIMO Originator, and Max_NIMO_time are parameters for period-based MO communication.

The time-limited MO communication method is a method in which a period during which MO communication can be performed is set in advance, and the network is allowed to use the MO communication only during that period. As a parameter for this, MO_TC indicates the granting time of the MO communication with the time limit. That is, the value "[time1]" of this parameter is the time during which the time-limited MO communication is granted.

The period-based MO communication method is a method in which a predetermined time is calculated from a specific point in time and the network is allowed to be used until the set time expires.

The NIMO is a parameter indicating whether or not to allow the periodical basis MO communication. At this time, the value of the parameter NIMO is described as true when the periodical basis MO communication is allowed, and the value of the parameter NIMO is described as false when the NIMO communication is allowed. Accordingly, the MME 220 can determine whether or not the periodical basis MO communication is permitted based on the value of the parameter NIMO.

In the embodiment of the present invention, periodic arithmetic MO communication is granted only when triggered by a specific originator for each device 100. The parameter "Allowed NIMO Originator" describes an originator for granting periodic-terminated MO communication to any one of the devices 100. [ That is, "Allowed NIMO Originator = [A, B, C]" shown in Table 1 indicates NIMO communication only when any one of Originators A, B, and C transmits an SMS to the device 100 It means granting. The information for identifying the originator is used for A, B, and C, preferably an identifier such as IMSI can be used.

For example, assuming that the device 100 is a printer, the originator to which the periodical-estimated MO communication is permitted may be the terminal of the printer owner. If the terminal of the printer owner is described in the parameter "Allowed NIMO Originator ", the terminal of the printer owner can control the printer which is the device 100 via SMS transmission.

The Max_NIMO_time is a parameter for controlling the time of the periodical estimated MO communication, and the MME 220 grants the periodical estimated MO communication for the time described in Max_NIMO_time after granting the periodical estimated MO communication. To this end, the MME 220 has a timer for NIMO communication, and the MME 220 sets the value of the parameter "timer_NIMO_start" to " true "

In addition, when the period-by-default MO communication is actually started, the MME 220 counts the time described in "Max_NIMO_time", and when the "Max_NIMO_time" expires, the connection establishment between the network and the terminal is canceled .

3 is a diagram for explaining a connection control method of a machine type communication according to an embodiment of the present invention.

In FIG. 3, the subscription of the device 100 is as shown in Table 1, and the subscription information is transmitted to the MME 220 when the device performs an attach, and the HSS 230 ) Stores and manages them.

Referring to FIG. 3, the SC 250 performs an attach procedure for using the network in operation 300. In this process, the MME 220 receives the contents of Table 1 from the HSS 230 And obtains the subscription information of the device 100. The SC 250 transmits an SMS to the MSC 240 in step 301 in order to start MO (Mobile Originating) communication to the device 100 that has transitioned to the idle state after performing step 300. [ Here, it is assumed that the SMS is an SMS transmitted by an arbitrary originator.

The MSC 240 transmits paging to the MME 220 in step 303. The MME 220 having received the paging may firstly determine whether to permit the communication with the device 100 in step 304. [ If the MME 220 determines that the device 100 is subject to the time limit for the time-limited MO communication using the subscription information of the device 100 acquired in step 300 and receives the restriction, that is, the "MO_TC = [time1] ", if the current time does not belong to "time1" At this time, if the term-based MO communication is permitted ("NIMO = false"), the MME 220 terminates the communication without transmitting the paging. The MME 220, which has determined to transmit the paging, transmits paging to transmit the SMS to the device 100 through the eNB 210 in steps 305 and 307.

The device 100 receiving this paging is switched to an active state. In step 309 and step 311, the device 100 transmits a service request message requesting network use through the eNB 210.

In accordance with the service request message, the MME 220 determines whether to accept the service request of the device 100 in step 313. At this time, the MME 220 refers to the subscription information of the device 100 stored in the HSS 230, and determines whether the device 100 is allowed to use the network 200 or not. Here, the subscription information is as described in <Table 1>.

The MME 220 can accept the use of the network by applying the time-limited MO communication or the period-based MO communication method through the subscription information of Table 1. The MME 220 accepts the communication by the time-limited MO communication when the current time is the time ([Time1]) described in the parameter MO_TC of the subscription information. If the communication by the time-limited MO communication is impossible, the MME 220 sets a parameter (NIMO = True) so as to accept the periodical basis MO communication, and the originator of the SMS is allowed to perform NIMO In the case of a generator, it accepts the periodical estimated MO communication.

When the communication by the time-limited MO communication or the period-based MO communication is accepted according to the above-described method, the MME 220 establishes a connection between the network 200 and the device 100 in step 315. [ At this time, the MME 220 establishes an interface S1 between the MME 220 and the eNB 210, and the eNB 210 establishes a radio bearer for the device, thereby connecting the network 200 and the device 100 .

On the other hand, when performing the time-limited MO communication, the connection between the device 100 and the network 200 is not terminated. Meanwhile, when performing the period-based MO communication, the connection between the device 100 and the network 200 may be terminated when the NIMO timer (timer for NIMO) expires according to the maximum communication allowable time (Max_NIMO_time = Tsec) recorded in the subscription information The connection is maintained until it is expired.

A communication method according to an embodiment of the present invention will now be described in more detail. 4 is a view for explaining a machine type communication method according to an embodiment of the present invention.

The network 200 includes a Packet GateWay / Serving GateWay (P-GW / S-GW) 260 and a Short Message Service Gateway Mobile Switching Center (SMS) ) &Lt; / RTI &gt; (Evolved Packet Core) including the P-GW / S-GW 260 and the MME 220 among the components of the network 200.

4, it is assumed that the subscription information of the device 100 is as shown in Table 1, and the subscription information is transmitted to the MME 220 when the device 100 attaches to the network 200 And the HSS 230 receives it via the MME 220 and stores it. It is also assumed that any originator has sent an SMS to target device 100, and that such SMS is stored in SC 250.

4, the SC 250 performs an attach procedure for using the network in step 400. In this process, the MME 220 receives the contents of Table 1 from the HSS 230 And obtains the subscription information of the device 100. In step 401, the SC 250 transmits the SMS to the SMS-GMSC 270 to start MO (Mobile Originating) communication to the device 100 that has transitioned to the idle state after performing step 300. [

The SMS-GMSC 270 inquires of the MSC 240 to route the SMS to the HSS 230 using the MSISDN (telephone number) of the device 100 in step 403 and obtains information on the MSC 240.

Then, in step 405, the SMS-GMSC 270 transmits the SMS to the corresponding MSC 240 using the information obtained previously (step 403).

The MSC 240 then transmits paging to the MME 220 to locate the device 100 in step 407.

In step 408, the MME 220 that has received the paging may firstly determine whether to allow the device 100 to communicate. If the MME 220 determines that the device 100 is subject to time restriction for the time-limited MO communication using the subscription information of the device 100 acquired in step 400 and receives the restriction, that is, the MO_TC = [time1] ", if the current time does not belong to "time1" At this time, if the term-based MO communication is permitted ("NIMO = false"), the MME 220 terminates the communication without transmitting the paging.

The MME 220 which has decided to transmit the paging transmits paging to all the eNBs 210 belonging to the tracking area corresponding to the current position of the device 100 in order to search for the device 100 in step 409 do. In step 411, the eNB 210 receiving the paging transmits paging to all the cells managed by the eNB 210. [

Accordingly, the device 100 receives the paging. In step 413 and step 415, the device 100 transmits an extended service request for requesting network use to the MME 210 in order to receive the SMS through the eNB 210 according to the received paging. In step 417, the MME 210 determines whether to allow the device 100 to communicate with the MME 210 in a second order.

The second acceptance decision is made as follows. First, the MME 220 determines whether the device 100 is subject to time constraints for time-limited MO communications and if it is constrained, it determines whether the current time is the time to allow the device to communicate. That is, the MME 220 determines whether the current time belongs to "time1" through "MO_TC = [time1]" of the subscription information.

At this time, if the confirmation result belongs to the time permitting the time-limited MO communication, the service request is accepted and the process proceeds to step 419. [

On the other hand, if the result of the check is not the time permitting the time-limited MO communication, it is determined whether the period-basis MO communication is allowed. At this time, if the term-based MO communication is permitted ("NIMO = false"), the MME 220 denies the service request and terminates the communication.

If, on the other hand, the period-based MO communication is allowed ("NIMO = True"), the MME 220 identifies the originator of the SMS.

At this time, if the originator of the SMS is not included in the "allowed NIMO originator" in the subscription information of the device, the MME 220 rejects the service request and terminates the communication.

On the other hand, if the originator of the SMS is included in the "allowed NIMO originator" in the subscription information of the device, the MME 220 sets "timer_NIMO_start" of the subscription information to true and proceeds to step 419.

If the service request is accepted, the MME 220 establishes a connection between the device and the network in step 419. That is, the MME 210 establishes an interface S1 of the MME 220 and the eNB 210, installs the context of the device 100 in the eNB 210, and performs a service request procedure to set up radio bearers.

In step 421, the MME 220 transmits a service request to the MSC 240 to receive the SMS of the device.

In step 423, the MSC 240 having received the service request transmits an SMS to be transmitted to the MS in a downlink unit data message.

The MME 220 encapsulates the SMS received by the MSC 240 into the NAS message in step 425 and transmits the encapsulated SMS message to the device 100 in the form of a downlink NAS transport message.

In step 427, the device 100 receiving the SMS encapsulates a delivery report for message reception into a NAS message and delivers the message to the MME as an Uplink NAS Transport message.

At this time, the MME 220 receiving the transmission report checks the subscription information stored in the HSS 230 in step 429 and drives the timer according to whether the "timer_NIMO_start" At this time, if "timer_NIMO_start = true", there is a restriction on the use time of the network. If "timer_NIMO_start = false", there is no restriction on the use time of the network. Accordingly, if "timer_NIMO_start = true ", the MME 220 drives the timer. The expiration of the timer depends on the "Max_NIMO_time = T sec" of the subscription information. On the other hand, if "timer_NIMO_start = false ", the MME 220 does not start the timer.

Then, the MME 220 transmits the transmission report received from the device 100 in step 431 to the MSC 240 using an uplink unit data message.

In step 433, the MSC 240 delivers a delivery report to the SMS-GMSC 270. In step 435, the MSC 240 delivers a delivery report to the SC 250 do.

In step 437, the device 100 transmits and receives data through the connection established previously (step 419). The data to be transmitted and received may vary depending on the type of the device 100 and the contents of the SMS.

If the timer is activated, the MME 220 releases or maintains the connection between the device and the network according to whether the timer expires in step 439. [ That is, when the timer has expired, the MME 220 transmits S1 to the MME 220 for connection to the eNB 210 for the device 100, S1 to release the radio bearers allocated to the device 100, And performs radio link disconnection (S1 and RRC connection release).

5 is a diagram for explaining a communication method of a device according to an embodiment of the present invention.

Referring to FIG. 5, if the paging is received in step 501, the device transmits a service request message in step 503.

The network 200 receiving the request message can determine whether the device 100 uses the network 200 according to the subscription information of the device. The network 200 allocates a radio bearer to the interface 100 between the eNB 210 and the MME 220 and the device 100 when the network grants the use of the network.

And activates a timer (timer for NIMO) that limits the use time of the network 200. [

Accordingly, if the network 200 is allowed to be used, the device 100 can receive the SMS in step 505. [ Upon receiving the SMS, the device 100 transmits a transmission report for the SMS received in step 507. [

The device 100 may then use the network 200 in step 509. At this time, the device 100 can receive specific data or transmit specific data through the network. For example, if the contents of the SMS received by the device 100 allow the specific server to receive the firmware, the device 100 accesses the specific server through the network to receive the firmware.

The device 100 determines whether the connection with the network 200 is terminated in step 511 and can use the network until the connection is terminated. The connection with this network ends when the timer for NIMO, which limits the use time of the network 200, expires. That is, when the timer for NIMO expires, the network 200 releases S1 and S1, which are interfaces between the eNB 210 and the MME 220, and the radio beacers allocated to the device 100, respectively.

6 is a diagram for explaining a network communication method according to an embodiment of the present invention.

Referring to FIG. 6, the network 200 transmits paging to the device 100 in step 601 to inform that the SMS is to be transmitted, and the network 200 receives a service request message from the device 100 in step 603 do.

The network 200 determines whether the time-limited MO communication is possible through the subscription information of the device 100 stored in the HSS 230 in step 605. [ This determination can be made through the parameter MO_TC. That is, if the present time is a time belonging to [time 1] of the parameter MO_TC, the time-limited MO communication is possible.

At this time, the network 200 proceeds to step 615 if the time-limited MO communication is available, and if it is not possible, the network determines whether the period-based MO communication is possible through the subscription information of the device 100 in step 607. [ The duration can be determined by the parameter NIMO. That is, if the value of the parameter "NIMO" is set to true, it is possible to carry out period-duration MO communication.

At this time, if the periodical basis MO communication is not possible (NIMO = false), the network 200 rejects a service request in step 611 and terminates the communication.

On the other hand, if it is determined that the MO communication is available (NIMO = True), the network 200 determines in step 609 whether the originator of the SMS transmission is the NIMO granted originator. In accordance with an embodiment of the present invention, even if the setting of the parameter NIMO is true, the periodic arithmetic MO communication only allows the periodic arithmetic MO communication if it is initiated by the originator specified in the parameter Allowed NIMO Originator.

If it is determined in step 609 that the device 100 is the originator granted the duration-based MO communication, the network 200 proceeds to step 613. Otherwise, the network 200 transmits a service request in step 611, And terminates the communication.

In step 613, the network 200 sets a timer (timer_NIMO_start) for limiting the use time of the network 200 to be used. That is, the network 200 sets "timer_NIMO_start = false" to "timer_NIMO_start = true".

In step 615, the network 200 establishes the S1 interface and radio bearer to connect the device 100 and the network 200. [

Then, the network 200 transmits an SMS to the device 100 in step 617, and receives a transmission report from the device 100 in step 619 according to the SMS transmission.

Then, the network 200 determines whether there is a restriction on the use time of the network 200 (step 621). "timer_NIMO_start = true" indicates that there is a restriction on the use time of the network, and "timer_NIMO_start = false" indicates that there is no restriction on the use time of the network.

Accordingly, if "timer_NIMO_start = true ", the network 200 proceeds to step 623 and drives the timer. The network then maintains a connection between the device and the network at step 625, but at step 627 it determines if the timer has expired and maintains the connection until the timer expires. At this time, if the timer expires in step 627, the network 200 releases the connection between the device 100 and the network 200 by releasing the S1 interface and the radio bearer in step 629.

On the other hand, if "timer_NIMO_start = false ", the network 200 proceeds to step 631 to maintain the network connection.

Meanwhile, according to the embodiment of the present invention, the network 200 refers to the subscription information of the device 100 before transmitting the paging to the device 100, and determines whether to transmit the paging.

FIG. 7 is a flowchart illustrating a method for determining paging transmission according to an exemplary embodiment of the present invention. Referring to FIG.

7 corresponds to steps 304 and 408 described above. The network 200, that is, the MME 220 transmits paging to the device 100 in step 601 of FIG. 6 according to the method shown in FIG. I decide whether to send paging.

In step 701, the network 200 determines whether the time-limited MO communication is available through the subscription information. This determination can be made through the parameter MO_TC. That is, if the present time is a time belonging to [time 1] of the parameter MO_TC, the time-limited MO communication is possible.

At this time, if the time-limited MO communication is available, the network 200 proceeds to step 707. If it is impossible, the network 200 determines whether the periodical MO communication is possible through the subscription information of the device 100 in step 703. [ The duration can be determined by the parameter NIMO. That is, if the value of the parameter "NIMO" is set to true, it is possible to carry out period-duration MO communication.

At this time, if the period-based MO communication is not possible (NIMO = false), the network 200 ends the communication without transmitting the paging in step 709. [

On the other hand, if it is possible to communicate periodically (NIMO = True), the network 200 determines in step 705 whether the originator of the SMS transmission is an originator granted NIMO. In accordance with an embodiment of the present invention, even if the setting of the parameter NIMO is true, the periodic arithmetic MO communication only allows the periodic arithmetic MO communication if it is initiated by the originator specified in the parameter Allowed NIMO Originator.

If it is determined in step 705 that the device 100 is the originator granted the duration-based MO communication, the network 200 proceeds to step 707. If not, the network 200 transmits the paging in step 709, Lt; / RTI &gt;

In step 707, the network 200 determines to transmit the paging. Accordingly, the paging is transmitted to the device 100.

In the above-described embodiment, paging is transmitted only in the case of the originator to which the duration-based MO communication is granted. However, the determination process for the originator can be omitted. The embodiments of the present invention disclosed in the present specification and drawings are merely illustrative examples of the present invention and are not intended to limit the scope of the present invention in order to facilitate understanding of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention;

2 is a diagram for explaining a schematic structure of a device according to an embodiment of the present invention;

3 is a diagram for explaining a connection control method of a machine type communication according to an embodiment of the present invention;

4 is a diagram for explaining a machine type communication method according to an embodiment of the present invention;

5 is a diagram for explaining a communication method of a device according to an embodiment of the present invention;

6 is a diagram for explaining a network communication method according to an embodiment of the present invention.

FIG. 7 is a flowchart illustrating a method for determining whether a paging is transmitted according to an embodiment of the present invention. FIG.

Claims (12)

A method of controlling access to a network in machine type communication, Transmitting paging notifying a device that an SMS transmission is scheduled; Receiving a service request from the device; (Mobile Originating) communication for accessing the network for a predetermined period to perform MO communication according to a parameter of the device-stored subscription information, or a predetermined time from a certain point of time, Determining whether the communication is allowed according to any one communication method among the periodical calculated MO communication to be connected to the network until the expiration of the communication; And establishing a connection between the device and the network when the determination result indicates that the communication is permitted, The method of claim 1, Characterized in that when the time limited MO communication is not granted, the mobile communication terminal permits the term estimated MO communication in accordance with whether or not the SMS is due to an originator that permits the periodical communication MO communication of the device A method for controlling connection of a network in communication. 2. The method of claim 1, wherein after establishing the connection, Determining whether an expiration time of the connection of the network has arrived according to the parameter of the subscription information if the communication method is a periodical-based MO communication; Further comprising the step of releasing the network connection when the expiration time of the connection of the network comes as a result of the calculation. 2. The method of claim 1, Confirming whether the parameter of the subscription information is set to perform period-end-of-period MO communication if the time-limited MO communication is not granted; And if it is determined that the communication is to be carried out as a result of the determination, allowing the SMS to carry out the term-based MO communication in the case of the originator that permits the term-based MO communication of the device A method for controlling connection of a network in communication. 2. The method of claim 1, Wherein the paging is transmitted when communication according to any one of a time-limited MO originating communication or a period-ending MO communication is permitted according to a parameter of the device-stored subscription information. A method for controlling access to a network in a network. A connection control method of a device in a machine type communication, Receiving paging notifying of an SMS transmission schedule; Transmitting a request message requesting network use to the network based on the SMS; Limited MO communication that connects to the network for a predetermined period so that the network performs MO communication according to the parameters of the subscription information of the pre-stored device, or calculates a predetermined time from a certain point of time, And communicating in accordance with any one communication method among the periodical basis MO communication connected to the network, using the network according to the communication method, The process of using the network comprises: If the time limited MO communication is not granted, the mobile communication terminal uses the network in accordance with the periodical-calculated MO communication method, depending on whether the SMS is performed by an originator that permits periodic-estimated MO communication of the device And controlling the connection of the device in the machine type communication. 6. The method of claim 5, wherein the step of using the network further comprises: Wherein if the communication method is a period-based MO communication, the network is used up to the expiration time of the connection of the network according to the parameter of the subscription information. 1. A connection control apparatus for a network in a machine type communication, A home subscriber server that stores parameters describing conditions for granting time-definite MO originating communication and period-ending MO communication for each device A mobile switching center for transmitting paging informing the device that an SMS transmission is scheduled, and When receiving a service request from a device according to the paging, a time-limited MO communication to access the network for a preset period to perform MO communication according to a parameter of the subscription information or a predetermined time from a certain point of time, Wherein the mobile communication terminal determines whether to permit communication according to any one communication method among the periodical calculated MO communication to be connected to the network until the expiration of the preset time, Entity, The mobility management entity comprising: If the time-limited MO communication is not allowed, whether or not the SMS is due to the originator granting the periodic-estimated MO communication of the device, a connection between the device and the network In the machine type communication. 8. The method of claim 7, wherein the mobility management entity Wherein if the communication method is a periodical-based MO communication, it is determined whether an expiration time of the connection of the network is reached according to the parameter of the subscription information, and when the expiration time comes, the network connection is released Network connection control device. 8. The method of claim 7, wherein the mobility management entity If the time-limited MO communication is not granted, confirms whether the parameter of the subscription information is set to perform period-end-of-MO communication, and if the SMS is set to perform period-based MO communication, Wherein said periodic calculated MO communication is granted in the case of an originator which performs the above-mentioned periodic MO communication. 8. The method of claim 7, wherein the mobility management entity When receiving the paging, when the communication according to any one of the time-limited MO communication or the period-based-communication MO communication is allowed according to the parameters of the device-stored subscription information at the time of the paging transmission A device for controlling the connection of a network in a machine type communication. In a device in machine type communication, A wireless communication unit for receiving paging notifying of scheduled transmission of SMS; and Limited MO communication that transmits a request message requesting network use to the network based on the SMS and accesses the network for a predetermined period so as to perform MO communication in accordance with the parameters of the subscription information of the pre- Or a periodic arithmetic MO communication in which a predetermined time is elapsed from an arbitrary point of time and a connection is made to the network until the expiration of the preset time is granted, communication according to any one of the communication methods, And a control unit for controlling the wireless communication unit to use the wireless communication unit, Wherein, If the time limited MO communication is not granted, the mobile communication terminal uses the network in accordance with the periodical-calculated MO communication method, depending on whether the SMS is performed by an originator that permits periodic-estimated MO communication of the device A device in a machine type communication characterized in. 12. The apparatus of claim 11, wherein the control unit Wherein the control unit controls the wireless communication unit to use the network up to the expiration time of the connection of the network according to the parameter of the subscription information if the communication method is a periodical-based MO communication.

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